JP3128194U - Plates with nuts, furniture, and chairs - Google Patents

Abstract

An object of the present invention is to provide a board member with a nut to which a nut that can be screwed to a bolt is attached to a plate member, a furniture having the plate member with the nut, and a chair having a plate member with a nut, and the appearance of the nut without being removed from the plate member. Do not damage.
A seat portion of a chair includes a back plate, six T nuts, and a front plate. A flange insertion hole 130 is formed in the back plate 120 so as not to penetrate from the T-nut insertion surface 120b toward the inside, and a through-hole 140 through which the T-nut main body 180a is inserted is formed at a substantially central portion of the bottom 150. Is formed. The T-nut main body 180 a is inserted into the through hole 140 on the T-nut insertion surface 120 b side, and the claw portion 180 d is inserted into the bottom portion 150. Then, the pasting surface 110a of the front plate 110 is bonded to the T nut insertion surface 120b of the rear plate 120 so as to overlap with each other with an adhesive.
[Selection] Figure 2

Description

  The present invention relates to a plate member with a nut in which a nut that can be screwed to a bolt is attached to a plate member, furniture including the plate member with the nut, and a chair including a plate member with a nut. It is related with the technique for not damaging the beauty.

Conventionally, furniture such as a desk or a chair using a plate with a nut is known. For example, a top plate is placed on the top surface of a table body that is formed by erection of curtains between the upper corners of the four corners, a demon nut is embedded on the lower surface side of the top plate, and the curtains are There is a table in which a top plate fixing screw is vertically penetrated through a crosspiece and the top end of the top plate fixing bolt is screwed into a demon nut (for example, see Patent Document 1).
JP 7-208420 A (2nd page)

  However, in a table using a top plate made of a plate material with embedded demon nuts as described above, for example, when the table top is lifted when the table is moved, Due to the weight of the table's four legs and the curtain, the force to pull the demon nut downward from the top plate via the top plate fixing screw worked, and there was a risk that the demon nut would come off the top plate. In order to prevent the demon nut from coming off from the top plate, for example, it may be configured using a demon nut whose axial length is larger than the conventional one, but the axial length of the demon nut is When the thickness is larger than the thickness of the top plate, the demon nut protrudes from the top surface of the top plate, and there is a problem that the aesthetic appearance is impaired. Also, in order to prevent the demon nut from protruding from the top surface of the top plate, for example, it may be configured using a top plate with a thickness dimension larger than the conventional one, but the weight of the top plate increases compared to the conventional one. There is a problem.

  The present invention has been made to solve the above-mentioned problems, and the object of the present invention is to provide a plate with a nut to which a nut that can be screwed to a bolt is attached to a plate, furniture including the plate with a nut, And in a chair provided with a board | plate material with a nut, it exists in preventing a nut from falling out of a board | plate material and not impairing the external appearance.

  The nut-equipped plate material of the present invention made to solve the above-mentioned problems (10: In this section, in order to facilitate understanding of the invention, the “best mode for carrying out the invention” is necessary as necessary. The components described in the column "" are shown in parentheses, but this description does not mean that the scope of the utility model registration request is limited.) Is formed from one side (3a) to the inside, In addition, the plate member (110, 120) having the insertion hole (130) formed so as not to penetrate the other surface (3b), and at least a part of the plate member is inserted into the insertion hole of the plate member, And a cylindrical nut (180) formed with a female screw portion (180b) capable of screwing a male screw member from the outside of the plate member. And a nut has the 1st to-be-latched part (180c) arrange | positioned at the outer peripheral side. The plate member has a first locking portion (150 for locking the first locked portion of the nut so as not to move the nut from the insertion hole of the plate material toward the male screw member screwed into the female screw portion. ).

  According to the plate with a nut configured as described above, the following operational effects can be obtained. That is, the first locking portion of the plate material does not move the nut toward the male screw member screwed into the female screw portion from the insertion hole of the plate material by locking the first locked portion of the nut. . In other words, the nut inserted into the insertion hole of the plate material is configured not to come out of the plate material. For example, when the nut is a cylindrical hexagon nut, it has a hexagonal cross-sectional shape formed along a hexagonal cross-sectional shape perpendicular to the axis of the hexagon nut, and An insertion hole having a depth dimension larger than the thickness dimension is formed from one side of the plate material toward the inside, and is formed so as not to penetrate the other side. Then, after inserting the hexagon nut into the insertion hole formed from one surface to the inside of the plate material, the inner diameter dimension is larger than the outer diameter dimension of the female thread portion of the hexagon nut, A stopper having a hexagonal cross section formed along the surface shape is inserted into the insertion hole, and this stopper is fixed to the plate material. If comprised in this way, the stopper corresponding to the 1st latching | locking part of a board | plate material will be the part (henceforth a cylinder part) located in the outer side of the internal thread part in the hexagon nut corresponded to the 1st to-be-latched part of a nut. The hexagon nut inserted into the insertion hole of the plate material does not come off from the plate material. Then, it is effective to construct, for example, a table top of the table using the nut-equipped plate material. For example, a top plate composed of the above-mentioned nut-attached plate material is placed on the top surface of the table body that is formed by erection of curtains between the upper corners of the four corners, and the top plate is fixed to the curtains from the bottom side of the curtains The bolt is penetrated in the vertical direction and the tip of the top plate fixing bolt is screwed into the above-mentioned hexagon nut. In the above-described example, the case of a hexagonal nut has been described. However, the same applies to other nuts such as a T-nut. For this reason, for example, when the table top is lifted when the table is moved, the nuts are mounted on the table top fixing bolts by the weight of the four legs of the table and the curtain. Although the pulling force is pulled downward from the plate, the first locking portion of the plate material constituting the top plate (the stopper corresponds to the above example) is the first locked portion of the nut (hexagon in the above example). The nut portion corresponds to the nut portion), so that the nut does not come off from the top plate. Therefore, compared to the case where a demon nut is embedded on the lower surface side of the top plate as in the prior art, for example, when the table top is lifted when the table is moved, the nut is removed from the top plate. Since there is no risk of detachment, the user can feel secure.

  Note that at least a part of the nut is inserted, and the insertion hole formed from one surface of the plate member to the inside is not penetrated to the other surface. That is, the nut does not protrude from the other surface located on the side opposite to the one surface of the plate member on which the insertion hole is formed. If it demonstrates using the example of the above-mentioned table, when the top plate mounted in the upper surface of a table main body is comprised from the above-mentioned board | plate material with a nut, a nut will not protrude from the upper surface of a top plate. Therefore, it does not impair the aesthetic appearance.

  According to a second aspect of the present invention, the nut has a second locked portion (180d) disposed on the outer peripheral side thereof, and the plate member is configured to prevent the nut from rotating with respect to the plate member. It is good to have the 2nd latching | locking part (120) which latches the 2nd to-be-latched part.

  According to the plate with a nut configured as described above, the following operational effects can be obtained. In other words, the second locking portion of the plate material does not rotate the nut relative to the plate material by locking the second locked portion of the nut. That is, the nut inserted into the insertion hole of the plate material is configured not to be rotated with the rotation of the male screw portion when the male screw member is screwed into the female screw portion of the nut from the outside of the plate material. . For example, when the nut is a cylindrical hexagon nut, the insertion hole having a hexagonal cross-sectional shape formed along the hexagonal cross-sectional shape orthogonal to the axis of the hexagon nut is one surface of the plate material. For example, it is formed from the inside toward the inside. According to this configuration, the inner peripheral side surface forming the hexagonal cross-sectional shape of the insertion hole corresponding to the second locking portion of the plate member is the second covered portion of the nut inserted into the insertion hole. The hexagon nut inserted into the insertion hole of the plate material by locking the outer peripheral side surface portion of the hexagon nut corresponding to the locking portion is used when the male screw member is screwed into the female screw portion of the hexagon nut from the outside of the plate material. , It does not rotate with the rotation of the male screw part. In the above-described example, the case of a hexagonal nut has been described. However, the same applies to other nuts such as a T-nut. Accordingly, when the male screw member is screwed into the female screw portion of the nut from the outside of the plate member, the male screw portion is easily connected to the female screw portion of the nut as compared with the case where the nut is rotated along with the rotation of the male screw member. Screwed.

  Further, when the plate material has a configuration in which a plurality of thin plate materials are stacked, at least one of the thin plate materials in which the insertion hole is formed may have the first locking portion. Conceivable. Specifically, as described in claim 3, the plate member has a configuration in which a plurality of thin plate members (110, 120) are overlapped, and is inserted into at least one of the plurality of thin plate members. It is conceivable that a hole is formed and at least one thin plate material (120) out of one or a plurality of thin plate materials formed with an insertion hole has a first locking portion.

  According to the plate with a nut configured as described above, the following operational effects can be obtained. That is, the first locking portion of at least one thin plate material among the one or plural thin plate materials in which the insertion holes are formed is inserted into the plate material by locking the first locked portion of the nut. The nut is not moved from the hole toward the male screw member screwed into the female screw portion. That is, the nut inserted into the insertion hole of the plate material is configured not to come out of at least one thin plate material among the one or more thin plate materials in which the insertion holes are formed. For example, when the nut is a cylindrical hexagon nut, it has a hexagonal cross-sectional shape formed along a hexagonal cross-sectional shape perpendicular to the axis of the hexagon nut, and An insertion hole having a depth dimension larger than the thickness dimension is formed from one side of the plate material toward the inside, and is formed so as not to penetrate the other side. Then, after inserting the hexagon nut into the insertion hole formed from one surface to the inside of the plate material, the inner diameter dimension is larger than the outer diameter dimension of the female thread portion of the hexagon nut, A stopper having a hexagonal cross-sectional shape formed along the surface shape is inserted into the insertion hole, and this stopper is fixed to at least one of the thin plate materials in which the insertion hole is formed. It is such a condition. If comprised in this way, the stopper equivalent to the 1st latching | locking part of a board | plate material will insert in the insertion hole of a board | plate material by latching the cylinder part of the hexagonal nut equivalent to the 1st to-be-latched part of a nut. The hexagon nut that has been made does not come off the plate. In the above-described example, the case of a hexagonal nut has been described. However, the same applies to other nuts such as a T-nut.

  The plate material has a configuration in which a plurality of thin plate materials are stacked. Therefore, the first locking portion may be formed on at least one thin plate material among the one or plural thin plate materials in which the insertion hole is formed before the plurality of thin plate materials are overlapped. For example, when the nut is a cylindrical hexagon nut, it has a hexagonal cross-sectional shape formed along a hexagonal cross-sectional shape perpendicular to the axis of the hexagon nut, and The surface opposite to the surface close to the male screw member screwed into the female screw portion of the hexagon nut in the thin plate material in which the insertion hole having a depth dimension larger than the thickness dimension is formed And is formed so as not to penetrate the surface close to the male screw member screwed into the female screw portion of the hexagon nut. The bottom of the insertion hole has an axial center that is substantially coaxial with the axial center of the insertion hole, and has an inner diameter that is larger than the outer diameter of the male screw member that is screwed into the female thread of the hexagon nut. A through hole is formed. When the hexagon nut is inserted into the insertion hole, the hexagon nut is locked to the bottom of the insertion hole having the through hole. The bottom of the insertion hole having the through hole forms a first locking portion. Then, after the hexagon nut is inserted into the insertion hole, a thin plate material without the insertion hole is overlaid on the surface where the insertion hole is formed. If comprised in this way, the bottom part of the insertion hole which has a through hole equivalent to the 1st latching | locking part of a board | plate material will latch the cylinder part of the hexagon nut corresponding to the 1st to-be-latched part of a nut. Therefore, the hexagon nut cannot be removed from the insertion hole of the plate material in the direction of the male screw member screwed into the female screw portion. In the above-described example, the case of a hexagonal nut has been described. However, the same applies to other nuts such as a T-nut. Accordingly, when the plate material has a configuration in which a plurality of thin plate materials are stacked, the first locking portion is formed on at least one thin plate material among the one or more thin plate materials in which the insertion holes are formed. Is done.

  In addition, when the plate material has a configuration in which a plurality of thin plate materials are stacked, an insertion hole is formed in the thin plate material closest to the outside of the plate material, and the thin plate material has the first locking portion. Good. Specifically, as described in claim 4, an insertion hole is formed in the thin plate material (120) located closest to the outside of the plate material among the plurality of thin plate materials (110, 120). It is preferable that the thin plate material formed with has a first locking portion.

  According to the plate with a nut configured as described above, the same function and effect as those of the third aspect are obtained. By the way, when the insertion hole and the first locking portion are formed in the plurality of thin plate materials, when the thin plate materials are overlapped, the insertion hole formed in each of the thin plate materials and the first Positioning work for each of the locking portions occurs. On the other hand, according to the plate with nuts configured in this way, the insertion hole and the first locking portion are formed only in the thin plate located closest to the outside of the plate, Since such alignment work does not occur, the number of work steps can be reduced.

  In addition, about the above-mentioned nut, as described in claim 5, the flange portion (180c) in which the first locked portion of the nut extends from one end portion of the nut in a direction perpendicular to the axis of the nut. ) And the second locked portion of the nut is a nut (180, hereinafter also referred to as a T-nut) having a claw portion (180d) extending from the flange portion toward the plate member. .

  According to the plate with a nut configured in this way, the same operational effects as those of the first to fourth aspects are obtained. Further, when the plate material has a configuration in which a plurality of thin plate materials are overlapped as described in claim 3 or claim 4 and the nut is a T-nut, the following operational effects are obtained. That is, the T nut is configured such that the claw portion of the second locked portion of the T nut can be inserted into the plate material. For example, it has a cross-sectional shape formed along the cross-sectional shape of the flange portion extending from one end portion of the T-nut in a direction perpendicular to the axis of the T-nut, and the thickness of the flange portion The flange insertion hole having a depth dimension larger than the dimension is from the surface opposite to the surface near the male screw member to be screwed into the female screw portion of the T-nut in the thin plate material on which the first locking portion is formed. It is formed so as not to penetrate the surface close to the male screw member that is formed toward the inside and is screwed into the female screw portion of the T-nut. The bottom of the flange insertion hole has an axial center that is substantially coaxial with the axial center of the flange insertion hole, and has an inner diameter that is larger than the outer diameter of the T nut excluding the flange and the claw. A through hole is formed. When the T nut is inserted into the through hole from the other end opposite to the one end where the flange portion of the T nut extends, a claw portion is formed on the bottom of the flange insertion hole having the through hole. The tip is touched. Then, by inserting the claw portion of the T nut into the bottom portion of the flange insertion hole, the flange portion of the T nut is locked to the flange insertion hole, and the T nut is fixed to the plate material. The bottom portion of the flange insertion hole having the through hole forms a first locking portion. Then, after the flange portion of the T-nut is inserted into the flange insertion hole, a thin plate material without the insertion hole is overlaid on the surface where the flange insertion hole is formed. If comprised in this way, the bottom part of the flange insertion hole which has a through-hole equivalent to the 1st latching | locking part of a board | plate material will latch the flange part of T nut equivalent to the 1st to-be-latched part of a nut. Thus, the T-nut does not come out of the plate material in the direction of the male screw member screwed into the female screw portion from the insertion hole. Also, by inserting the claw part of the T-nut into the bottom of the flange insertion hole, the T-nut is fixed to the plate material, so that it does not fall off from the plate material, so that the nut is temporarily fixed to the plate material so as not to fall off. Compared with the case where a simple operation occurs, it is easy to handle the plate material until the thin plate material without the insertion hole is overlapped.

According to a sixth aspect of the present invention, the length dimension of the claw portion of the second locked portion is preferably smaller than the thickness of the portion of the plate material into which the claw portion is inserted.
According to the plate with a nut configured as described above, the following operational effects can be obtained. That is, when the claw part which the 2nd to-be-latched part of a T nut has is inserted in a board | plate material, a claw part does not protrude from the board | plate material of the part into which a claw part is inserted. Therefore, when handling the nut-equipped plate material configured in this way, the operator is not injured by the claw portion of the T-nut and is safe for the operator.

  Further, as defined in claim 7, the portion into which the claw portion of the plate material is inserted is composed of a laminated material (120) bonded so that a plurality of single plates (122, 124, 126) are overlapped with each other, The length dimension of the nail | claw part of a 2nd to-be-latched part is good to be larger than the dimension of the board thickness of the single board in the position nearest to a nail | claw part among several single boards.

  According to the plate with a nut configured as described above, the following operational effects can be obtained. That is, when the claw portion of the second locked portion of the T-nut is inserted into the laminated material of the plate material, the claw portion is inserted into at least two single plates. Is difficult to remove from the laminate. The laminated material is formed by, for example, bonding a plurality of single plates with an adhesive so that the fiber directions are orthogonal to each other and overlap each other. And when the nail | claw part is formed in plate shape, for example, if a nail | claw part is inserted in a single plate so that the plate-shaped surface may become substantially parallel to the fiber direction of a single plate, it will become easy to remove | deviate a nail | claw part. When the claw portion is inserted into the single plate so that the plate-like surface is substantially orthogonal to the fiber direction of the single plate, the claw portion is difficult to come off. Therefore, for example, when the claw portion is inserted into the single plate so as to be substantially parallel to the fiber direction of the single plate located closest to the claw portion among the plurality of single plates, and the claw portion is easily removed. However, since the fiber direction of the next veneer is orthogonal to the fiber direction of the veneer closest to the nail, when the nail is inserted into the next veneer, the nail is removed from the laminated material. It becomes difficult. As a result, when the claw portion of the second locked portion of the T-nut is inserted into the laminated material of the plate material, if the claw portion is inserted into at least two single plates, the claw portion is detached from the laminated material. It becomes difficult.

  In addition, it is furniture provided with the plate-shaped mounting member which can mount an object like Claim 8, Comprising: A mounting member is in any one of Claims 1-7. It is good to be comprised with the board material with a nut.

  According to the furniture comprised in this way, there exist the following effects. That is, the plate-like mounting member which can mount the object in furniture is comprised by the board | plate material with a nut in any one of Claims 1-7. As an example, a top plate made of the above plate with nuts is placed on the upper surface of the table body formed by erection of curtains between the upper corners of the four corners. For example, the top plate fixing bolt is vertically penetrated and the top end of the top plate fixing bolt is screwed into the nut. For this reason, for example, when the table top plate is lifted when the table is moved, the nut is lowered from the top plate via the top plate fixing bolt due to the weight of the four legs of the table and the curtain beam. However, the first locking portion of the plate material constituting the top plate locks the first locked portion of the nut, so that the nut does not come off from the top plate. Therefore, compared to the case where the demon nut is embedded on the lower surface side of the top plate as in the prior art, for example, when the table top plate is lifted when the table is moved, the nut may come off from the top plate. Because there is no, it gives the user a sense of security. Further, since the nut does not protrude from the top surface of the table top plate, the appearance is not impaired.

  Moreover, it is a chair (1) provided with the chair main body (2) which has a substantially horizontal seat part (3) for a user to sit down as described in Claim 9, Comprising: It is good to be comprised with the board | plate material with a nut in any one of Claims 7.

  According to the chair configured as described above, the following operational effects can be obtained. That is, the substantially horizontal seat part for the user in a chair to sit down is comprised by the board | plate material with a nut in any one of Claims 1-7. As an example, a seat composed of the above-mentioned nut-attached plate material is placed on the upper surface of the chair body formed by laying a seat support between the upper parts of the legs at the four corners, and is substantially horizontal inside the seat support. The seat fixing bolt is penetrated from the lower surface side of the seat mounting bracket into the through hole formed on the other end side of the seat mounting bracket made of a plate material whose one end is inserted into the groove formed in the groove, and the tip of the seat fixing bolt Is screwed onto the nut of the seat. For example, when the user sits on the seat, the seat bends so that the substantially central portion of the seat is lowered by the weight of the user. When the seat is bent, a compressive force acts on the upper surface side of the seat portion, and a tensile force acts on the lower surface side of the seat portion. Therefore, when the demon nut is embedded in the lower surface side of the seat portion as in the conventional case, since the tensile force acts on the lower surface side of the seat portion as described above, the insertion hole in which the demon nut is embedded The fitting force with the demon nut was reduced, and the demon nut could be loosened or dropped from the seat. On the other hand, according to the present invention, since the first locking portion of the plate member constituting the seat portion locks the first locked portion of the nut, the nut does not come off from the seat portion. Therefore, compared with the conventional case where the demon nut is embedded in the lower surface side of the seat portion, for example, when the user is seated on the seat portion, there is no risk that the nut will come off from the seat portion. Gives you a sense of security. Further, since the nut does not protrude from the upper surface of the seat portion, it is safe and does not impair the aesthetic appearance.

  Further, as described in claim 10, a chair comprising a chair body having a substantially horizontal seat for a user to sit on, and a backrest (4) disposed at the rear end of the seat, At least any one of a seat part or a backrest is good to be comprised with the board | plate material with a nut in any one of Claims 1-7.

  According to the chair configured as described above, the following operational effects can be obtained. That is, at least any one of the substantially horizontal seat part or backrest for the user in a chair to sit down is comprised by the board | plate material with a nut in any one of Claims 1-7. For example, when a user sits on a chair having legs at the four corners, the upper part of the front legs at the front corners near the user and the rear two parts having a height dimension larger than the height dimension of the front legs. It is composed of the above-mentioned plate material with nuts on the upper surface of the chair body formed by laying four side seat support portions between the upper portion of the front leg of the corner and the intermediate portion existing at a position having the same height. Place the seat. A seat fixing bolt is penetrated from the lower surface side of the seat mounting bracket into a through hole formed on the other end side of the seat mounting bracket made of a plate material having one end inserted into a groove formed substantially horizontally inside the seat support portion. At the same time, the tip of the seat fixing bolt is screwed into the nut of the seat. And a back support part is constructed between the upper part of the rear legs of the rear two corners, and the above-mentioned nut is attached to the front part of the back frame formed from the middle part to the upper part of the rear legs of the two corners and the back support part. A back mounting bracket is formed in a through hole formed on the other end of a back mounting bracket made of a plate material in which a backrest made of a plate material is arranged and one end thereof is inserted into a groove formed substantially vertically inside the back support portion. The backrest fixing bolt is penetrated from the rear surface side, and the tip of the backrest fixing bolt is screwed into the nut of the backrest.

  Thus, for example, when the chair back is lifted when the chair is moved, the nut is lowered from the seat through the seat fixing bolt due to the weight of the four legs of the chair and the seat support. However, the first locking portion of the plate material constituting the seat portion locks the first locked portion of the nut, so that the nut does not come off from the top plate. Therefore, compared to the case where the demon nut is embedded in the lower surface side of the seat portion as in the past, for example, when the backrest of the chair is lifted when the chair is moved, there is a risk that the nut may come off from the seat portion. Because it is not, it gives the user a sense of security. Further, since the nut does not protrude from the upper surface of the seat portion, it is safe and does not impair the aesthetic appearance.

  For example, when the user sits on the seat and presses the backrest with the user's back, the substantially central portion of the backrest bends backward. When the backrest is bent, a compressive force acts on the front side of the backrest, and a tensile force acts on the back side of the backrest. Therefore, when the demon nut is embedded on the rear side of the backrest as in the conventional case, the tensile force acts on the rear side of the backrest as described above, so the insertion hole and the demon The fitting force with the nut was reduced, and the demon nut could be loosened or removed from the backrest. On the other hand, according to the present invention, the first locking portion of the plate material constituting the backrest locks the first locked portion of the nut, so that the nut does not come off from the backrest. Therefore, compared to the conventional case where a demon nut is embedded on the back side of the backrest, for example, when the user sits on the seat and presses the backrest on the user's back, the nut may come off from the backrest. Because there is no, it gives the user a sense of security. Further, since the nut does not protrude from the front surface of the backrest, it is safe and does not impair the aesthetic appearance.

Next, an embodiment to which the present invention is applied will be described with reference to the drawings.
[Description of configuration of chair 1]
First, the structure of the chair 1 of this embodiment is demonstrated. Fig.1 (a) is the perspective view which looked at the chair 1 of this embodiment from upper direction, FIG.1 (b) is AA sectional drawing of Fig.1 (a). Hereinafter, in the chair 1, the side on which the seat portion 3 is disposed with respect to the backrest 4 will be referred to as “front side”, and the side on which the backrest 4 is disposed with respect to the seat portion 3 will be described as “rear side”. . In the chair 1, the side on which the seat portion 3 is disposed with respect to the two front legs 22 and the front leg 23 is referred to as “upper side”, and the side on which the two front legs 22 and the front leg 23 are disposed with respect to the seat portion 3. Is described as “lower side”. Further, the left side and the right side of the chair 1 when viewed from the front side of the chair 1 will be described as “left side” and “right side”, respectively.

  As shown in FIG. 1A, the chair 1 includes a chair body 2 having a substantially horizontal seat portion 3 for a user to sit on, and a backrest 4 disposed at the rear end of the seat portion 3. I have. Hereinafter, the chair body 2, the seat portion 3, and the backrest 4 will be described in this order.

[Description of configuration of chair body 2]
The chair body 2 is attached to two front corners 22 and a front leg 23 each having a substantially prismatic shape attached to each of the two front corners of the four corners of the seat portion 3, and to each of the two rear corners of the four corners of the seat portion 3. Two substantially prismatic rear legs 24 and 25, a substantially prismatic front connecting member 27a for connecting the left front leg 22 and the right front leg 23, a left rear leg 24 and a right rear leg 25; A substantially prismatic rear connection member (not shown) for connecting the left front leg 22 and the left rear leg 24 (not shown), a right front leg 23 and a right rear leg 25, Is provided with a right connecting member 27b. In addition, each member with which the chair main body 2 is provided is wooden in this embodiment.

  Moreover, as shown in FIG.1 (b), the three groove | channels 29 are formed in the inside from the left side in the center part of the right side connection member 27b substantially horizontally toward the inside. In FIG. 1B, only one groove 29 is shown. The groove 29 is formed such that its vertical width dimension is larger than the plate thickness dimension of the mounting bracket 6 described later, and its front-rear width dimension is larger than the width dimension of the insertion portion 6b of the mounting bracket 6 described later. Yes. And these three groove | channels 29 are formed in the right side connection member 27b by the substantially equal space | interval in the front-back direction. In addition, three grooves 29 are formed in a substantially horizontal direction from the right side surface at the center of the left connecting member toward the inside. The left connecting member is formed such that the three grooves 29 face the three grooves 29 of the right connecting member 27b.

[Description of configuration of seat 3]
As shown in FIG. 1B, the seat portion 3 includes a back plate 120, six T nuts 180, and a front plate 110. In FIG. 1B, only one T nut 180 is shown. When the seat portion 3 is attached to the left connecting member and the right connecting member 27b via the mounting bracket 6, the male screw portion of the bolt 7 is connected to the back plate 120 from the lower side of the T nut 180. It arrange | positions in the position screwed together by the internal thread part 180b. The seat portion 3 will be described in detail in the “Detailed description of the configuration of the seat portion 3” column.

  The mounting bracket 6 is made of a highly rigid material such as a metal plate, for example, and as shown in FIG. 1 (b), a substantially rectangular main body 6a and a main body that are arranged in a posture in which both surfaces thereof are substantially vertical. In a direction opposite to the direction in which the insertion portion 6b is extended from the upper end portion of the main body portion 6a, the substantially rectangular insertion portion 6b extending substantially perpendicularly to the main body portion 6a from the lower end portion of 6a. It has a substantially rectangular mounting portion 6c extending substantially perpendicular to the main body portion 6a. A through hole 6d is formed in a substantially central portion of the attachment portion 6c. The through hole 6d is formed so as to communicate with the female threaded portion 180b of the T-nut 180 and the male threaded portion of the bolt 7 when the seat 3 is attached to the left connecting member and the right connecting member 27b. Yes. Moreover, the length dimension of the insertion part 6b of the mounting bracket 6 in the left-right direction is smaller than the depth dimension of the groove 29 in the left-right direction.

  The seat portion 3 is attached to the left connecting member and the right connecting member 27b as follows. First, the seat portion 3 is placed on top of the front connecting member 27a, the rear connecting member, the left connecting member, and the right connecting member 27b. And the mounting bracket 6 is hold | maintained in the attitude | position in which both surfaces of the main-body part 6a of the mounting bracket 6 become substantially perpendicular | vertical, and the mounting part 6c of the mounting bracket 6 is above the insertion part 6b. At this time, the mounting bracket 6 is held in such a posture that the groove 29 of the right connecting member 27b and the insertion portion 6b of the mounting bracket 6 face each other. Further, the insertion portion 6b of the mounting bracket 6 is inserted into the groove 29 of the right connecting member 27b so that the through-hole 6d and the female screw portion 180b of the T nut 180 of the seat portion 3 communicate with each other. Hold in a proper posture. Then, the male screw portion of the bolt 7 is inserted into the through hole 6 d of the mounting bracket 6 and screwed into the female screw portion 180 b of the T-nut 180 of the seat portion 3. Next, among the three grooves 29 of the right connecting member 27b, the insertion part 6b of the mounting bracket 6 is inserted into each of the remaining two grooves 29, and the male screw part of the bolt 7 is inserted into the through hole 6d of each of the mounting brackets 6d. The seat portion 3 is attached to the right connecting member 27b by being inserted into the screw portion and screwed into the female screw portion 180b of the T-nut 180 of the seat portion 3. Then, the insertion portion 6b of the mounting bracket 6 is inserted into each of the three grooves 29 of the left connecting member, the male screw portion of the bolt 7 is inserted into the through hole 6d of each of the mounting bracket 6, and the T nut 180 of the seat portion 3 is inserted. The seat portion 3 is attached to the left connecting member by being screwed to the female screw portion 180b.

[Description of the structure of the backrest 4]
The backrest 4 is constituted by a back support portion 5, a top half of the left back leg 24, and a top half of the right back leg 25, which are installed between the top of the left back leg 24 and the top of the right back leg 25. Composed.

[Detailed description of the structure of the seat 3]
Next, the configuration of the seat portion 3 of the chair 1 will be described in detail. 2A is a perspective view showing a state in which the T-nut 180 is disposed above the flange insertion hole 130 formed in the back plate 120, and the surface plate 110 is disposed above the T-nut 180. FIG. FIG. 2C is a cross-sectional side view of the main part showing a state in which the T-nut 180 is inserted into the flange insertion hole 130 of the back plate 120 and the front plate 110 is overlaid, and FIG. 2C is a perspective view of the seat portion 3 as viewed from above. FIG. 2D is a perspective view of the seat portion 3 as viewed from below.

  As shown in FIG. 2A, the seat portion 3 includes a back plate 120, six T nuts 180, and a front plate 110. In FIG. 2A, only one T nut 180 is shown. In addition, the structure which consists of the back surface plate 120, the six T nuts 180, and the surface plate 110 corresponds to a plate material with a T nut. Hereinafter, the back plate 120, the six T nuts 180, and the front plate 110 will be described in this order.

  The back plate 120 is made of wood, for example, and has a substantially rectangular shape. As shown in FIG. 2B, the back plate 120 includes a first single plate 122, a second single plate 124, and a third single plate 126 which are three single plates processed to be thin. . The first single plate 122 and the second single plate 124 are, for example, resin-based so that the fiber direction of the first single plate 122 and the fiber direction of the second single plate 124 are orthogonal to each other and overlap each other. It is pasted through the adhesive. In addition, a third single plate 126 is provided on the surface of the second single plate 124 opposite to the surface bonded to the first single plate 122, and the third single plate 124 is aligned with the fiber direction of the second single plate 124. The fiber directions of the single plate 126 are orthogonal to each other and are bonded together through, for example, a resin adhesive so as to overlap.

  Then, as shown in FIG. 2A, the back plate 120 is formed with six flange insertion holes 130 into which flange portions 180c of a T-nut 180 described later are inserted. Further, as shown in FIG. 2 (b), these flange insertion holes 130 are surfaces close to bolts (not shown) that are screwed into a female thread portion 180b of a T-nut 180, which will be described later, on the back plate 120 (hereinafter, referred to as “between”). It is formed so as not to penetrate the bolt insertion surface 120a from the surface opposite to the bolt insertion surface (120a) (hereinafter referred to as a T-nut insertion surface) 120b.

  Further, a through hole 140 through which a T-nut main body 180a of a T-nut 180 described later is inserted is formed at a substantially central portion of the bottom 150 of each of the flange insertion holes 130. These through-holes 140 are formed so as to penetrate from the respective bottom portions 150 to the bolt insertion surface 120a.

  As shown in FIG. 2B, the T-nut 180 is made of a metal material such as iron, and has a T-nut main body 180a, a flange portion 180c, and a claw portion 180d. The T-nut main body 180a has a substantially cylindrical shape, and a female screw portion 180b is formed on the inner peripheral side thereof. The flange portion 180c extends from one end portion of the T-nut main body 180a (hereinafter referred to as a flange-side end portion) in a direction perpendicular to the axis of the T-nut main body 180a, and is formed in a disk shape. The claw portion 180d extends from the flange portion 180c to the back plate 120 and is formed in an annular shape.

  As shown in FIG. 2B, the flange insertion hole 130 of the back plate member 120 described above has a cross-sectional shape perpendicular to the axis thereof formed along the cross-sectional shape of the flange portion 180c of the T-nut 180, and its shaft. The depth dimension in the center direction is formed larger than the thickness dimension of the flange portion 180c. Further, the through hole 140 of the back plate 120 described above has an inner diameter dimension larger than an outer diameter dimension of the T-nut main body 180a.

  The length of the claw portion 180d of the T-nut 180 is set to be smaller than the thickness of the portion of the back plate 120 where the claw portion 180d is inserted. That is, the length dimension of the claw portion 180d of the T nut 180 is set to be smaller than the dimension obtained by subtracting the depth dimension of the flange insertion hole 130 from the dimension of the thickness of the back plate member 120. Therefore, when the claw portion 180 d of the T nut 180 is inserted into the bottom portion 150 of the back plate 120, the claw portion 180 d does not protrude from the bolt insertion surface 120 a of the back plate 120.

  Further, the length dimension of the claw portion 180d of the T-nut 180 is set larger than the thickness of the single plate at the position closest to the claw portion 180d among the three thin plate-like single plates of the back plate 120. Has been. For example, when the thickness of the first single plate 122 is larger than the depth of the flange insertion hole 130, the T-nut 180 has three lengths of the claw portion 180d. Of the first single plate 122, the second single plate 124, and the third single plate 126 that are thin plate-like single plates, the thickness dimension of the first single plate 122 that is closest to the claw portion 180d. It is set larger. Therefore, when the claw portion 180 d of the T nut 180 is inserted into the bottom portion 150 of the back plate 120, the claw portion 180 d is inserted into the first single plate 122 and the second single plate 124.

  As shown in FIG. 2A, the surface plate 110 is a thin plate material made of, for example, wood, has a substantially rectangular shape, and its central portion is downward with respect to its left and right end portions. It has a warped shape so as to be positioned. In addition, the left and right length dimensions and the front and rear length dimensions of the surface plate 110 are set to be appropriate for the user when the user is seated on the seat portion 3. The above-described back plate 120 has an outer dimension that is substantially the same as the outer dimension of the front plate 110, and a central portion that is downward with respect to the left and right ends along the warped shape of the front plate 110. It is formed in a warped shape so as to be positioned. Further, the surface 110b of the surface plate 110 that is touched by the user when the user is seated on the seat portion 3 is a surface opposite to the affixing surface 110a to be bonded to the back surface plate 120, and is processed smoothly. .

  Next, as shown in FIG. 2A, six T nuts 180 are inserted into the flange insertion holes 130 and the through holes 140 formed in the back plate 120, and the front plate 110 is superimposed on the back plate 120. The assembly method will be described. First, the back plate 120 is held so that the T-nut insertion surface 120b of the back plate 120 faces upward, and the flange side end of the T-nut body 180a faces upward above the T-nut insertion surface 120b of the back plate 120. The T-nut 180 is held in the posture. At this time, the T-nut 180 is held in such a posture that the through-hole 140 on the T-nut insertion surface 120b side of the back plate 120 and the end opposite to the flange-side end of the T-nut main body 180a face each other. . Then, the end of the T-nut body 180a opposite to the flange-side end is inserted into the through hole 140 on the T-nut insertion surface 120b side of the back plate 120. Further, after the tip of the claw portion 180 d of the T nut 180 is brought into contact with the bottom portion 150 of the flange insertion hole 130 having the through hole 140, the claw portion 180 d of the T nut 180 is inserted into the bottom portion 150 of the flange insertion hole 130. Accordingly, the flange portion 180 c of the T nut 180 is locked to the bottom portion 150 of the flange insertion hole 130, and the T nut 180 is fixed to the back plate 120. Next, among the six T nuts 180, the remaining five T nuts 180 are also inserted into the bottom 150 of the flange insertion hole 130 in the same manner as described above. As a result, the remaining five T nuts 180 are also fixed to the back plate 120.

  Then, as shown in FIG. 2A, the back plate 120 is held such that the T nut insertion surface 120b of the back plate 120 to which the six T nuts 180 are fixed faces upward, and above the back plate 120. The surface plate 110 is held in a posture in which the surface 110b of the surface plate 110 faces upward. At this time, for example, a resin adhesive is applied to at least one of the T-nut insertion surface 120b of the back plate 120 and the affixing surface 110a of the front plate 110. Further, the back plate 120 and the front plate 110 are aligned with the warp shape of the front plate 110 along the shape of the warp of the back plate 120, and the T-nut insertion surface 120 b of the back plate 120 and the pasting surface of the front plate 110. 110a is held in such a posture as to face 110a. Then, the affixing surface 110 a of the front surface plate 110 is bonded to the T-nut insertion surface 120 b of the back surface plate 120 so that each of the four end surfaces of the back surface plate 120 is aligned with each of the four end surfaces of the front surface plate 110.

  The seat 3 configured in this manner has a surface 3b on the upper side corresponding to the surface 110b of the surface plate 110, and as shown in FIG. 2C, has a smooth surface on which the T-nut 180 does not protrude. Yes. Further, the lower back surface 3 a of the seat portion 3 corresponds to the bolt insertion surface 120 a of the back plate 120. Then, on the back surface 3a of the seat portion, as shown in FIG. 2D, when the seat portion 3 is attached to the left connecting member and the right connecting member 27b via the mounting bracket 6, the external thread of the bolt 7 is externally provided. Six through-holes 140 are disposed at positions where the portion is screwed into the female screw portion 180 b of the T-nut 180.

  The back plate 120, the six T nuts 180, and the front plate 110 correspond to “plate material with nuts”, the back surface 3a of the seat portion 3 corresponds to “one surface”, and the front surface 3b of the seat portion 3 corresponds to “the other plate”. The flange insertion hole 130 corresponds to the “insertion hole”, the back plate 120 and the front plate 110 correspond to the “plate material”, the T-nut 180 corresponds to the “tubular nut”, the flange The portion 180c corresponds to the “first locked portion”, and the bottom portion 150 corresponds to the “first locked portion”. Further, the claw portion 180d corresponds to a “second locked portion”, the bottom portion 150 of the back plate 120 corresponds to a “second lock portion”, and the back plate 120 and the front plate 110 include “a plurality of thin plates”. The first single plate 122, the second single plate 124, and the third single plate 126 correspond to “a plurality of single plates”.

[Description of effects]
(1) According to the chair 1 provided with the seat part 3 comprised with the board | plate material with a nut of this embodiment, there exist the following effects. In other words, in a table using a conventional table top made of a plate with embedded demon nuts, for example, when the table top is lifted when the table is moved, Due to the weight of the four legs and the curtain, the force to pull the demon nut downward from the top plate via the top plate fixing screw worked, and there was a risk that the demon nut would come off from the top plate. In addition, if the axial length of the demon nut is made larger than the thickness of the top plate, the demon nut will protrude from the top surface of the top plate, impairing the aesthetic appearance. was there.

  On the other hand, according to the chair 1 of the present embodiment, the seat portion 3 includes the back plate 120, the six T nuts 180, and the front plate 110. A configuration including the back plate 120, the six T nuts 180, and the front plate 110 corresponds to a plate material with a T nut. A flange insertion hole 130 is formed in the back plate 120 so as not to penetrate the bolt insertion surface 120a, and is formed inward from the T-nut insertion surface 120b. Further, a through hole 140 through which the T-nut main body 180a is inserted is formed at a substantially central portion of the bottom 150 of the flange insertion hole 130 so as to penetrate from the bottom 150 to the bolt insertion surface 120a. Then, the T nut body 180 a is inserted into the through hole 140 on the T nut insertion surface 120 b side of the back plate 120, and the claw portion 180 d of the T nut 180 is inserted into the bottom portion 150, whereby the flange portion 180 c is inserted into the flange insertion hole 130. Locked, the T-nut 180 is fixed to the back plate 120. Then, the pasting surface 110a of the front plate 110 is bonded to the T nut insertion surface 120b of the rear plate 120 so as to overlap with each other with an adhesive. Further, the surface 110b of the surface plate 110 that is touched by the user when the user is seated on the surface 3b of the seat portion 3 is a surface opposite to the affixing surface 110a of the back surface plate 120, and is processed smoothly. .

  Thus, for example, when the seat 3 is lifted when the chair 1 is moved, the four front legs 22, the front legs 23, the rear legs 24, and the rear legs 25 of the chair 1 are connected to the four front side connections. The weight of the member 27a, the rear connecting member, the left connecting member, and the right connecting member 27b causes a force to pull the T nut 180 downward from the seat portion 3 via the bolt 7, but the flange insertion hole of the seat portion 3 works. Since the bottom portion 150 of 130 locks the flange portion 180 c of the T nut 180, the T nut 180 cannot be removed from the back plate 120. Further, the surface 3b of the seat portion 3 corresponds to the surface 110b of the front surface plate 110 and is a surface opposite to the affixing surface 110a of the front surface plate 110 to be bonded to the back surface plate 120. The T nut 180 does not protrude from 3b. Therefore, when the seat portion 3 is lifted when the chair 1 is moved, for example, compared to the case where the seat portion is configured by a plate material in which a demon nut is embedded as in the prior art, Since there is no possibility that the T-nut 180 will come off, a sense of security can be given to the user. In addition, since the T-nut 180 does not protrude from the surface 3b of the seat portion 3, it is safe and does not impair the appearance.

  (2) Moreover, according to the chair 1 provided with the seat part 3 comprised by the board | plate material with a nut of this embodiment, there exist the following effects. That is, as described above, by inserting the T-nut main body 180a into the through hole 140 on the T-nut insertion surface 120b side of the back plate 120 and inserting the claw portion 180d of the T-nut 180 into the bottom portion 150, the flange portion 180c is Locked to the flange insertion hole 130, the T-nut 180 is fixed to the back plate 120.

  If comprised in this way, the bottom part 150 of the back surface plate 120 will not rotate the T nut 180 nut with respect to the back surface plate 120 by latching the claw part 180d of the T nut 180. Accordingly, when the male threaded portion of the bolt 7 is screwed into the female threaded portion 180b of the Tnut 180, the Tnut 180 is compared with the case where the Tnut 180 rotates with the rotation of the male threaded portion of the bolt 7. Since it does not rotate, the male screw portion of the bolt 7 can be easily screwed into the female screw portion 180b of the T-nut 180.

  Further, by inserting the claw portion 180d of the T nut 180 into the bottom portion 150 of the back plate 120, the T nut 180 is fixed to the back plate 120, so that the T nut 180 does not fall out of the back plate 120. Therefore, the T-nut 180 does not fall out compared to the case where the work of temporarily fixing the nut to the back plate material 120 so that the nut does not fall out, the handling of the back plate material 120 until the front plate 110 is overlaid. Easy.

  (3) Furthermore, according to the chair 1 provided with the seat part 3 comprised with the board | plate material with a nut of this embodiment, there exist the following effects. That is, as described above, the flange plate insertion hole 130 is formed in the back plate 120 so as to be formed from the T nut insertion surface 120b of the back plate 120 toward the inside and not to penetrate the bolt insertion surface 120a. . For example, when the flange insertion holes 130 are formed in a plurality of plate materials, an alignment operation of the flange insertion holes 130 formed in those plate materials occurs. On the other hand, according to the chair 1 of this embodiment, For example, the flange insertion hole 130 is formed only in the back plate 120, and such alignment work does not occur, so that the number of work steps can be reduced.

  (4) Moreover, according to the chair 1 provided with the seat part 3 comprised by the board | plate material with a nut of this embodiment, there exist the following effects. That is, the length dimension of the claw portion 180d of the T nut 180 is set smaller than the thickness of the portion of the back plate 120 where the claw portion 180d is inserted. Therefore, when the claw portion 180d of the T-nut 180 is inserted into the bottom portion 150 of the back plate 120, the claw portion 180d does not protrude from the bolt insertion surface 120a of the back plate 120 where the claw portion 180d is inserted. Therefore, when handling the plate member with a nut of the present embodiment, the operator is not injured by the claw portion 180d of the T-nut 180, and is safe for the operator.

  (5) Moreover, according to the chair 1 provided with the seat part 3 comprised by the board | plate material with a nut of this embodiment, there exist the following effects. That is, for example, when the thickness of the first single plate 122 is larger than the depth of the flange insertion hole 130, the claw portion 180 d of the T nut 180 is inserted into the bottom portion 150 of the back plate 120. The claw portion 180d is inserted into the first single plate 122 and the second single plate 124. The first single plate 122 and the second single plate 124 are, for example, resin-based so that the fiber direction of the first single plate 122 and the fiber direction of the second single plate 124 are orthogonal to each other and overlap each other. It is pasted through the adhesive.

  With this configuration, when the claw portion 180d is formed in a plate shape, for example, the claw portion 180d is formed on the first single plate 122 so as to be substantially parallel to the fiber direction of the first single plate 122, for example. Even when the claw portion 180d is easily inserted, the fiber direction of the next second single plate 124 is orthogonal to the fiber direction of the first single plate 122. When inserted into the second single plate 124, the claw portion 180d is difficult to come off from the back plate material 120. Therefore, when the claw portion 180d of the T-nut 180 is inserted into the back plate member 120, the claw portion 180d is inserted into at least two single plates 122 and the second single plate 124. The portion 180d is difficult to be removed from the back plate material 120.

[Other Embodiments]
As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, It is possible to implement in the following various aspects.

  (1) In the chair 1 of the said embodiment, although the seat part 3 is equipped with the T nut 180, it is not restricted to this. The nut provided in the seat may be a hexagonal nut or another nut. Also in the embodiment configured as described above, the same operational effects as those of the above-described embodiment are obtained.

  (2) In the chair 1 of the above embodiment, the backrest 4 may be formed of a plate material with a nut. For example, the back support 5, the upper half of the left rear leg 24, and the upper half of the right rear leg 24 constituting the backrest 4 of the above embodiment are used as a back frame (not shown). And the back part (illustration omitted) comprised from the board | plate material with a nut of the said embodiment is arrange | positioned in the front surface of this back frame body, The board | plate material by which the one end was inserted in the groove | channel formed substantially perpendicularly inside the back frame body A back fixing bolt (not shown) is passed through the through hole formed on the other end of the back mounting bracket (not shown) from the rear side of the back mounting bracket, and the tip of the back fixing bolt is screwed into the nut on the back Let

  According to the embodiment thus configured, for example, when a user sits on a seat (not shown) and presses the back with the user's back, the substantially central portion of the back is bent backward. When the back is bent, a compressive force is applied to the front side of the back and a tensile force is applied to the back side of the back. Therefore, when the back part is made of a plate material in which the demon nut is embedded as in the conventional case, a tensile force acts on the rear side of the back part as described above, so the insertion hole in which the demon nut is embedded There was a risk that the fitting power between the demon nut and the demon nut would be reduced, and the demon nut would loosen or come off the back. On the other hand, according to the present embodiment, the bottom portion (not shown) of the flange insertion hole of the plate material constituting the back portion locks the flange portion (not shown) of the T nut, so that the T nut comes off from the back portion. There is no. Therefore, compared to the case where the back portion is made of a plate material in which a demon nut is embedded as in the conventional case, for example, when the user sits on the seat portion and presses the back portion with the user's back, the T Since there is no possibility that the nut will come off, it gives the user a sense of security. Further, since the T-nut does not protrude from the front surface of the back portion, it is safe and does not impair the aesthetic appearance.

  (3) In the said embodiment, although this invention was applied to the seat part 3 of the chair 1, this invention may be applied to furniture other than a chair. Specifically, the table top may be formed of a nut-attached plate according to the present invention as follows. For example, a top plate (not shown) made of the above-mentioned plate with a nut is placed on the upper surface of a table body (not shown) formed by laying curtain curtains between the upper parts of the legs at the four corners, and the lower surface of the curtain frame A top plate fixing bolt (not shown) is vertically penetrated from the side to the curtain, and the tip of the top plate fixing bolt is screwed into the nut.

  According to the embodiment configured as described above, for example, when the table top plate is lifted when the table is moved, the top plate fixing bolts are set according to the weights of the four legs of the table and the curtain. However, the bottom (not shown) of the flange insertion hole of the plate material constituting the top plate locks the flange portion (not shown) of the T-nut. The T-nut will not come off. Therefore, when the table top is lifted when the table is moved, for example, compared to the case where the table top is made of a plate material in which a demon nut is embedded as in the prior art, the T Since there is no possibility that the nut will come off, it gives the user a sense of security. Further, since the T-nut does not protrude from the top surface of the table top plate, the appearance is not impaired.

  (4) In the chair 1 of the said embodiment, although the back surface plate 120 and the surface plate 110 which comprise the seat part 3 were wooden, it is not restricted to this. For example, a metal material such as an aluminum material or a resin material may be used. Also in the embodiment configured as described above, the same operational effects as those of the above-described embodiment are obtained.

(A) is the perspective view which looked at the chair 1 from upper direction, FIG.1 (b) is AA sectional drawing of Fig.1 (a). (A) is a perspective view which shows the state which has arrange | positioned the T nut 180 above the flange insertion hole 130 formed in the back surface plate 120, and has arrange | positioned the surface plate 110 above it, (b) is the back surface plate 120 of FIG. It is principal part sectional drawing which shows the state by which T nut 180 was inserted in the flange insertion hole 130, and the surface plate 110 was piled up, (c) is the perspective view which looked at the seat part 3 from the upper part, (d) FIG. 3 is a perspective view of the seat portion 3 as viewed from below.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Chair, 2 ... Chair main body, 3 ... Seat part, 3a ... Back surface, 3b ... Front surface, 4 ... Backrest, 5 ... Back support part, 6 ... Mounting bracket, 6a ... Main body part, 6b ... Plug-in part, 6c ... Mounting part, 6d ... through hole, 7 ... bolt, 22,23 ... front leg, 24,25 ... rear leg, 27a ... front side connecting member, 27b ... right side connecting member, 29 ... groove, 110 ... surface plate, 110a ... sticking plate 110b ... front surface, 120 ... back plate, 120a ... bolt insertion surface, 120b ... T-nut insertion surface, 122 ... first single plate, 124 ... second single plate, 126 ... third single plate, 130 ... flange Insertion hole, 130a ... flange insertion hole, 140 ... through-hole, 150 ... bottom, 180 ... T-nut, 180a ... T-nut body, 180b ... female screw part, 180c ... flange part, 180d ... claw part.

Claims (10)

A plate member having an insertion hole formed from one side to the inside and not penetrating the other side;
A cylindrical nut in which at least a part thereof is inserted into the insertion hole of the plate member, and a female screw portion capable of screwing a male screw member from the outside of the plate member is formed on the inner peripheral side thereof;
A plate with nuts,
The nut has a first locked portion disposed on the outer peripheral side thereof,
The plate member locks the first locked portion of the nut so as not to move the nut from the insertion hole of the plate member toward the male screw member screwed into the female screw portion. A plate material with a nut, characterized by having one locking portion. In the board material with a nut of Claim 1,
The nut has a second locked portion disposed on the outer peripheral side thereof,
The said board | plate material has a 2nd latching | locking part which latches said 2nd to-be-latched part of the said nut so that the said nut may not be rotated with respect to the said board | plate material, The board | plate material with a nut characterized by the above-mentioned. In the board | plate material with a nut of Claim 1 or Claim 2,
The plate material has a configuration in which a plurality of thin plate materials are stacked,
The insertion hole is formed in at least one thin plate material of the plurality of thin plate materials,
A plate member with a nut, wherein at least one thin plate member among the one or a plurality of thin plate members formed with the insertion hole has the first locking portion. In the board | plate material with a nut of Claim 3,
The insertion hole is formed in the thin plate material located closest to the outside of the plate material among the plurality of thin plate materials,
The thin plate material in which the insertion hole is formed has the first locking portion. In the board | plate material with a nut in any one of Claims 1-4,
The first locked portion of the nut has a flange portion extending from one end of the nut in a direction perpendicular to the axis of the nut,
The nut-attached plate material, wherein the second locked portion of the nut has a claw portion extending from the flange portion toward the plate material. In the board material with a nut of Claim 5,
The length of the claw portion of the second locked portion is smaller than the plate thickness of the portion into which the claw portion is inserted in the plate material. In the board | plate material with a nut of Claim 5 or Claim 6,
The portion into which the claw portion in the plate material is inserted is composed of a laminated material that is bonded to overlap a plurality of single plates,
With the nut, the length dimension of the claw portion of the second locked portion is larger than the thickness of the single plate located closest to the claw portion among the plurality of single plates Board material. Furniture comprising a plate-like placement member capable of placing an object,
The furniture according to claim 1, wherein the placing member includes the nut-attached plate material according to claim 1. A chair comprising a chair body having a substantially horizontal seat for a user to sit on,
The said seat part is comprised with the board | plate material with a nut in any one of Claims 1-7, The chair characterized by the above-mentioned. A chair body having a substantially horizontal seat for the user to sit on;
A backrest disposed at the rear end of the seat;
A chair comprising:
At least any one of the said seat part or the said backrest is comprised with the board | plate material with a nut in any one of Claims 1-7.

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