JP4624479B1 - Angle adjustment bracket - Google Patents

Abstract

An angle-adjusting metal fitting that prevents a rest portion such as a headrest, an armrest portion, or a footrest from swinging in a standing direction and reliably holds a final tilted state is provided.
SOLUTION: Used for a sofa having a reclining rest portion 3 and capable of swinging the rest portion 3 in the standing direction A while preventing the swinging in the tilting direction B in a plurality of stages and a desired tilt angle. The elastic member 2 is provided to apply a rotational resistance moment M that suppresses the swinging of the rest portion 3 in the standing direction A in the angle adjusting metal fitting held in step S2.
[Selection] Figure 2

Description

  The present invention relates to an angle adjusting bracket used for a sofa.

2. Description of the Related Art Conventionally, angle adjustment fittings that can recline headrests, armrests, footrests, and the like provided on a sofa have been widely used.
As described in Patent Document 1, the present inventor adjusts the angle of the reclining portion so that the reclining portion can be held at a predetermined multi-step inclination angle by preventing the swinging in the tilting direction while allowing the reclining portion to swing in the standing direction. Proposing metal fittings.

Japanese Patent No. 4296223

However, the conventional angle adjustment bracket has a structure that maintains the posture of the reclining part by restricting the swinging of the headrest etc. in the tilting direction in multiple stages, so that it makes a clicking sound in the reverse standing direction Oscillates extremely lightly. Therefore, when the skin of the seat sinks under the load of the person sitting on the sofa and the epidermis of the backrest is dragged downward, the headrest etc. is pulled up in the direction of rising due to the tension of the epidermis, and it stands up unexpectedly. There was a drawback that the final tilted state of could not be maintained.
In addition, if the skin is pulled during the sofa manufacturing stage or during refurbishment work, the reclining part will swing in the upright direction, and the work cannot be performed while maintaining the final tilted state, so that the skin will not wrinkle. It was extremely difficult to coat the skin with such a sufficiently large tension.

Therefore, an object of the present invention is to provide an angle adjustment fitting that prevents the headrest, armrest portion, and footrest ( rest portion ) from swinging in the upright direction, and reliably holds the final tilted state.

An angle adjusting bracket for a sofa according to the present invention includes a headrest portion attached to an upper end of a backrest portion so as to be able to swing back and forth in a standing direction and a tilting direction, and is continuously packaged from the backrest portion to the headrest portion. And the headrest portion is used in a sofa having a skin stretched so as to be in a tension state with a predetermined tension in the final tilted state, the headrest portion can be swung in a standing direction, and the headrest portion In an angle adjustment fitting that prevents the swinging in the tilting direction in multiple stages and holds it at a desired tilting angle, the swinging piece attached to the headrest part and the mounting piece fixed to the backrest part And a pivot pin member that is non-rotatably assembled to the attachment piece and pivotally connects the swing piece and the attachment piece, and is loaded by a person sitting on the sofa When the skin of the backrest portion in the tension state is dragged downward, the rotational resistance moment as a resistance force that suppresses the headrest portion from swinging in the upright direction and holds the headrest portion in the final tilted state. A spiral spring provided to the swing piece is provided, the outer end of the spiral spring is fixed to a part of the swing piece, and the inner end of the spiral spring is connected to the pivot pin member. It is the one that has stopped at .

In addition, the front end of the seat portion is provided with a footrest portion that is attached so as to be able to swing up and down in the standing direction and the tilting direction, and is continuously covered from the seat portion to the footrest portion, and the footrest portion is in a final tilted state. Used for a sofa having an outer skin stretched so as to be in a tension state with a predetermined tension, enabling the footrest portion to swing in a standing direction, and swinging the footrest portion in a tilting direction in multiple stages. In the angle adjustment bracket that prevents and holds at a desired inclination angle, the swing piece portion attached to the footrest portion, the attachment piece portion fixed to the seat portion, and the non-rotation to the attachment piece portion And a pivot pin member that pivotally connects the swing piece and the mounting piece, and when the skin of the tensioned seat sinks due to the load of a person sitting on the sofa , The above The suppressed the Trest unit swings the upright direction rotational resistance moment of the resistance forces which hold the footrest in the final reclined provided a spiral spring which imparts to the swinging piece portion, the outer end of the vortex coil spring The part is fastened to a part of the swinging piece part, and the inner end part of the spiral spring is fastened to the pivot pin member.
In addition, an armrest portion attached to the side end of the seat portion so as to be able to swing left and right in a standing direction and a tilting direction is provided, and is continuously covered from the seat portion to the armrest portion, and the armrest portion is in a final tilted state. Used in a sofa having an outer skin stretched so as to be in a tension state with a predetermined tension, enabling the armrest portion to swing in a standing direction, and swinging the armrest portion in a tilting direction in multiple stages. In the angle adjustment metal fitting that is prevented by and held at a desired inclination angle, the swing piece portion attached to the armrest portion, the attachment piece portion fixed to the seat portion, and the attachment piece portion A pivoting pin member that is assembled in a rotating manner and pivotally connects the swing piece and the mounting piece, and when the skin of the tensioned seat sinks due to the load of a person sitting on the sofa To prevent the armrest from swinging in the standing direction A spiral spring is provided for applying a rotational resistance moment as a resistance force to hold the armrest to the final tilted state to the swing piece, and the outer end of the spiral spring is stopped at a part of the swing piece. The inner end of the spiral spring is fixed to the pivot pin member .

Further, a pair of parallel wall portions formed in a circular shape centering on the swing axis of the swing piece portion, and each of the wall portions is disposed at a rotationally symmetric position with the swing shaft center as a symmetry axis. and even wedge-shaped window portion that is a pair with the tooth surface to the the pivot axis is disposed in rotational symmetry at 180 degrees about and one side with movable by said wedge-shaped window portion A floating wedge member, a pair of arcuate gear portions provided between the wall portions and formed in an outer tooth shape that can be meshed with the tooth surface around the swing axis, and the floating wedge member And a spring wire that always urges and urges the gear portion.
Further, the wall portion, the wedge-shaped window portion, the floating wedge member, the gear portion, and the spring wire are accommodated between a pair of disk-like cover members attached from the swing axis direction. The pivot part to be assembled is configured, and the thickness dimension of the elastic member is set to 15% to 100% with respect to the thickness dimension of the pivot part.

  According to the angle adjustment bracket of the present invention, it is possible to prevent the rest portion from being pulled by the skin of the sofa due to the rotational resistance moment and swinging in the standing direction, and when the sofa is desired to be used while the rest portion is in the final tilted state. The rest can be held stably without getting up unexpectedly. In addition, it can be stretched with appropriate tension on the epidermis while maintaining the posture where the rest part is tilted to the final tilted state, and when the rest part is used in an upright state, the epidermis is wrinkled, It doesn't sag and looks good.

It is the simple perspective view which showed the example of the usage location of the angle adjustment metal fitting of this invention. It is the partially broken front view which showed one Embodiment of the angle adjustment metal fitting which concerns on this invention. It is the partially broken side view which showed the angle adjustment metal fitting. It is the bottom view which showed the angle adjustment metal fitting. It is a perspective explanatory view of a sofa using the angle adjusting bracket of the present invention. It is the cross-sectional front view which illustrated the angle adjustment metal fitting. It is the cross-sectional front view which illustrated the angle adjustment metal fitting. It is a principal part enlarged front view explaining the effect | action of an angle adjustment metal fitting. It is the perspective view which showed the reference example of the angle adjustment metal fitting deeply related to this invention. It is the front view which showed the reference example of the angle adjustment metal fitting. It is the top view which showed the reference example of the angle adjustment metal fitting.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
As shown in FIG.1 and FIG.5, the angle adjustment metal fitting of this invention is used for the sofa S provided with the rest part 3 to recline. A plurality of angle adjusting brackets 1 are attached to the sofa S, and a plurality of rest portions 3 are attached to the fixed side of the sofa S so as to be swingable. The sofa S illustrated in FIGS. 1 and 5 is supported by leg portions 42 and 42, and has a seat portion 41 and a backrest portion 40 fixed to the leg portions 42 and 42. Further, the sofa S has a headrest portion 30 at the upper end of the backrest portion 40, a footrest portion 31 at the front end of the seat portion 41, armrest portions 32, 32 on both sides of the seat portion 41, and an angle adjusting bracket as the rest portion 3. 1 and 1 are attached. The sofa S is covered with a continuous skin E from the fixed side to the rest portions 3. In the final tilted state in which the rest portions 3 are swung in the tilt direction B to the limit of the range of motion, the skin E has an appropriate tension so that there is little wrinkle generated when the rest portions 3 are in the standing posture. Is stretched.
The angle adjusting brackets 1 and 1 are configured so that the rest 3 can be swung in the standing direction A, and can be held at a desired tilt angle by preventing the swing in the tilt direction B in multiple stages. .

As shown in FIG. 2, the angle adjusting bracket 1 is provided with a resilient member 2 that imparts a rotational resistance moment M that suppresses the swinging of the rest portion 3 in the standing direction A. As will be described later, the elastic member 2 can hold the rest 3 in the final tilted state against the tension applied to the rest 3 in the final tilted state when the skin E of the sofa S receives some load. Oscillation in the standing direction A is suppressed with a certain amount of resistance.
In the present invention, “to prevent swinging in multiple stages” means that the rest 3 is swung in the standing direction A from the final tilted state to the final standing state, and is in 10 stages at equal pitches. This means that the posture holding angle is set as described above, and the rest portion 3 swinging in the standing direction A is regulated in stages so as not to return in the tilting direction B.
Specifically, taking the headrest portion 30 as an example, in the range from the final tilted state in which the headrest portion 30 is in a horizontal posture to the vertical posture, for example, 16 stages of posture holding angles are set at equal pitches, The headrest portion 30 that swings forward (standing direction A) is regulated in stages so as not to return backward (tilting direction B). Or, specifically, taking the footrest portion 31 as an example, a posture holding angle of, for example, 16 steps is set at an equal pitch within a range from the final tilted state in which the footrest portion 31 is in a vertical posture to a horizontal posture, The footrest 31 that swings in the (standing direction A) is regulated in stages so that it does not return downward (tilting direction B).

More specifically, as shown in FIG. 2 to FIG. 4, the swing piece 11 attached to the rest 3, the attachment piece 12 fixed to the fixed side of the sofa S, and the attachment piece 12 And a pivoting pin member 13 that is assembled non-rotatably and pivotally connects the swing piece 11 and the mounting piece 12. The pivot pin member 13 is pivotally mounted so as to be swingable about the swing axis X while being fitted to the mounting piece 12. One end of the pivoting pin member 13 is a large-diameter head 33, and a locking groove 13a orthogonal to the swing axis X direction is formed in the head 33. The other end of the pivot pin member 13 has a small diameter and is secured by caulking or the like in an assembled state.
The elastic member 2 is a spiral spring 20 made of a spiral metal spring, and has an outer end portion 22 bent in a U-shape protruding toward the base end portion of the swinging piece portion 11. The inner end 21 that is fixed to the stopper 11 a and is bent at a substantially right angle is fixed to the locking groove 13 a of the pivot pin member 13. The spiral spring 20 suppresses the swinging of the swinging piece portion 11 in the standing direction A even when the tensioned skin E is further subjected to the load in the resting portion 3 in the final tilted state. Is given to the swinging piece 11 elastically as a rotational resistance moment M.

As shown in FIGS. 2, 6, and 7, the angle adjusting bracket 1 includes a pair of parallel wall portions 12 a and 12 a that are formed in a circular shape around the swing axis X and a wall portion 12 a and 12 a. Four wedge-shaped window portions 5, 5, 5, 5, which are arranged at rotationally symmetric positions, each having a pivot axis X as a symmetric axis, and movable within the wedge-shaped window portion 5, and a pivot shaft Provided between a pair of floating wedge members 4, 4 disposed at a rotationally symmetric position of 180 degrees around the center X and having a tooth surface 4a on one surface side, and the walls 12a, 12a, and the swing axis X And a pair of arcuate gear portions 11b, 11b formed in an outer tooth shape that can mesh with the tooth surface 4a, and a spring wire 6 that constantly urges and biases the floating wedge members 4, 4 to the gear portions 11b, 11b. , 6.
The wall portions 12a and 12a are extended to the mounting piece portion 12, and are formed in a facing plate shape in which the gear portions 11b and 11b can be housed, and penetrate through a central hole concentric with the swing axis X.
The wedge-shaped window 5 has an arcuate surface 5b on the inner side near the pivot axis X and an arcuate wedge surface 5a on the outer side. Each wedge surface 5a is formed centering sequentially on the guide axis Y which is eccentric from the swing axis X and which is a rotationally symmetric position every 90 degrees with the swing axis X as a symmetry axis. That is, the distance between the wedge surface 5a and the gear portion 11b is gradually reduced (reduced) as it approaches the clockwise direction in FIG. Further, a floating stepped portion 8 that projects from the inner arcuate surface 5 b and guides the floating wedge member 4 is formed. Moreover, it has the retreat space part 9 which can accommodate the floating wedge member 4 of the state (mesh cancellation | release state) which is not meshing with the gear part 11b.

The pair of floating wedge members 4 and 4 are respectively inserted into wedge-shaped window portions 5 and 5 disposed at rotationally symmetric positions of 180 degrees. The floating wedge member 4 is formed to be slightly larger than the gap between the walls 12a and 12a, and protrudes at both end portions from the outer surfaces of the walls 12a and 12a while being inserted through the wedge-shaped window 5. The floating wedge member 4 has a tooth surface 4a on one surface side, and an arcuate contact surface 4b that contacts the wedge surface 5a on the other surface side. The floating wedge member 4 has a guide gradient surface 14 that abuts the floating stepped portion 8 and guides itself in a direction away from the gear portion 11b. The guiding gradient surface 14 is formed at the rear edge of the tooth surface 4a.
The pair of gear portions 11b and 11b are pivotally coupled between the wall portions 12a and 12a so as to be swingable about the swing axis X. The gear portions 11b and 11b are inserted into the swinging piece portion 11 through which the floating wedge member 4 can be inserted. The gear portions 11b and 11b are externally toothed at a rotationally symmetric position of 180 degrees with the swing axis X as the symmetry axis. It is formed in a shape. The gear portions 11b and 11b have a shape in which stress concentration is unlikely to occur at the base end portion of the swing piece portion 11. Further, the gear portion 11b is formed with a pushing protrusion 15 that presses the floating wedge member 4 against the retreat space portion 9 on one end side (meshing end point side), and on the other end side (meshing start point side). An extrusion protrusion 16 is formed to push out the floating wedge member 4 accommodated in the retreat space 9.
The spring wire 6 is cut into a predetermined length and is formed in a single character. The spring wire 6 is externally fitted to the support portion 17 by bending one end into a linear shape and bending the other end into a hook shape or a circular shape. The spring wire 6 is elastically deformed in an arc shape in contact with the abutting surface 4 b, and constantly restores a restoring force to the floating wedge member 4.
When the gear portion 11b swings and the tooth surface 4a meshes with the gear portion 11b and the floating wedge member 4 moves, the contact surface 4b is guided by the wedge surface 5a, and the floating wedge member 4 is moved to the gear portion 11b. It is formed so as to be arranged like a wedge between the wedge surfaces 5a. That is, in the floating wedge member 4, the tooth surface 4a meshes with the gear portion 11b, the abutment surface 4b abuts on the wedge surface 5a, and the gear portion 11b (the swinging piece portion 11) moves in one direction (inclining direction). B) is restricted from swinging.

The wall portions 12a and 12a are sandwiched between thin circular (disc-shaped) cover members 7 and 7 from the swing axis X direction. The pivoting pin member 13 pivots the wall portions 12a, 12a, the gear portions 11b, 11b, and the cover members 7, 7 concentrically. That is, the wall portions 12a, 12a, the wedge-shaped window portions 5, 5, 5, 5, the floating wedge members 4, 4, the gear portions 11b, 11b, and the spring wire members 6, 6 are assembled to form a cover member. The pivoting portion 10 is configured to be accommodated between the seven and seven.
The thickness d of the elastic member 2 is set to 15% to 100% with respect to the thickness W ₀ of the pivoting portion 10 (see FIG. 3). If the thickness dimension d of the resilient member 2 is smaller than 15% of the thickness dimension W ₀ of the pivoting part 10, sufficient strength and rigidity of the resilient member 2 cannot be secured, and the final tilted state of the rest part 3 Cannot be held stably. Further, the thickness d of the elastic member 2 is 100% larger than the thickness dimension W ₀ of the pivotally connected portion 10, the width dimension of the angle adjusting bracket 1 becomes excessive, attachment to a sofa S is limited There is a fear.
The angle adjusting bracket 1 may have a ratchet mechanism (not shown) by meshing the claw and the gear teeth, and the design can be changed as long as the gist of the present invention is not changed.

The use method (action) of the angle adjusting bracket of the present invention described above will be described.
First, in the process of manufacturing the sofa S shown in FIG. 1 and FIG. 5, or in the work of replacing the skin E, the skin E is stretched from the fixed side of the sofa S to the rest portion 3. At this time, the angle adjusting brackets 1 and 1 for attaching the rest portion 3 to the fixed side of the sofa S suppress the swinging of the rest portion 3 in the standing direction A with the rotational resistance moment M by the elastic member 2. Since the rest part 3 holds the final tilted state and gives an appropriate tension to the epidermis E, the rest part 3 is stretched. .

  Next, when a person sits down and a load is applied to the seat portion 41 and the backrest portion 40 on the sofa S in which the rest portion 3 is swung in the tilt direction B to the limit of the movable range, that is, in the final tilted state, The epidermis E of the part 41 sinks due to a human load, or the epidermis E of the backrest part 40 is dragged downward, and the tension acting on the rest part 3 increases. At this time, the elastic member 2 suppresses the swinging of the rest portion 3 in the standing direction A using the rotational resistance moment M as a resistance force, and reliably holds it in the final tilted state.

  Thereafter, the rest 3 is raised in the standing direction A against the rotational resistance moment M from the final tilted state shown in FIGS. 6 and 8A. In FIG. 8A, the floating wedge member 4 has a tooth surface 4a meshed with the gear portion 11b and a contact surface 4b abutted on the wedge surface 5a. As shown in FIG. 8B, when the gear portion 11b is swung in the standing direction A, the contact surface 4b of the floating wedge member 4 is separated from the wedge surface 5a to form a slight gap g. As shown in FIG. 8C, when the rest portion 3 is further swung in the standing direction A, the guide gradient surface 14 of the floating wedge member 4 comes into contact with the floating stepped portion 8 of the wedge-shaped window portion 5, and the teeth The meshing between the surface 4a and the gear portion 11b is released, and the tooth surface 4a gets over with a clicking sound so that it is repelled by the gear portion 11b. When the swinging of the rest part 3 is stopped at a desired position, the floating wedge member 4 is pressed against the gear part 11b by the spring wire 6, and the tooth surface 4a meshes with the gear part 11b. Owing to the wedge action, the swinging of the rest portion 3 in the tilt direction B is restricted and held at a desired tilt angle.

  As shown in FIG. 7, when the rest portion 3 is swung by a predetermined amount to be in the final standing state, the pushing projection 15 abuts on the floating wedge member 4 as shown in FIG. Press. As shown in FIG. 8 (e), when the rest portion 3 is further swung in the standing direction A, the floating wedge member 4 is in sliding contact with the floating stepped portion 8 of the wedge-shaped window portion 5 on the guide gradient surface 14. Guided (guided) to the retreat space 9. When the floating wedge member 4 is housed in the retreat space 9, the engagement between the tooth surface 4a and the gear portion 11b is released, and the swing in the tilt direction B becomes free. Then, as shown in FIG. 8 (f), when the rest portion 3 is swung in the tilt direction B and restored to the final tilted state, the push-out projection 16 comes into contact with the floating wedge member 4, and the floating wedge member 4 is retracted. Extrude from space 9 In this manner, as shown in FIG. 8A again, the tooth surface 4a meshes with the gear portion 11b, and the swinging of the rest portion 3 in the tilt direction B is restricted.

Next, a reference example of an angle adjustment fitting closely related to the present invention will be described.
As shown in FIGS. 9 to 11, the elastic member 2 may be a torsion coil spring 23 wound concentrically around the swing axis X. In this case, the torsion coil spring 23 is wound around the head 33 of the pivot pin member 13. In addition, the torsion coil spring 23 has one end 24 bent in a dogleg shape fixed to the engaging portion 11a of the swing piece 11 and the torsion coil spring 23 bent in a substantially J shape. The end portion 25 is fixed to the protruding portion 19 that penetrates the cover member 7 and is fixed to the attachment piece portion 12. The coil spring 23 suppresses the swinging of the swinging piece portion 11 in the standing direction A even when the tensioned skin E is further subjected to a load in the resting portion 3 in the final tilted state. Is given to the swinging piece 11 elastically as a rotational resistance moment M. In the case where the torsion coil spring 23 is used, the pivot pin member 13 does not need to be non-rotating on the attachment piece portion 12, but pivots the swing piece portion 11 and the attachment piece portion 12. If it is.

  As described above, the present invention is used in the sofa S provided with the reclining rest part 3 and prevents the rest part 3 from swinging in the tilting direction B while allowing the rest part 3 to swing in the standing direction A in multiple stages. Since the elastic member 2 for applying the rotational resistance moment M that suppresses the swinging of the rest portion 3 in the standing direction A is provided in the angle adjusting bracket that holds at a desired inclination angle, the rotational resistance moment M Can prevent the rest part 3 from being pulled by the skin E of the sofa S and swinging in the standing direction A, and the rest part 3 is unexpectedly raised even when the sofa S is used with the rest part 3 in the final tilted state. And can maintain a stable posture. In addition, the skin E can be stretched with an appropriate tension while maintaining the posture in which the rest 3 is tilted to the final tilted state, and the skin E is not required when the rest 3 is used in the standing state. It can be produced nicely without sagging.

  Further, the swing piece 11 attached to the rest portion 3, the mounting piece 12 fixed to the fixed side of the sofa S, the swing piece 11 assembled to the mounting piece 12 in a non-rotating manner, A pivot pin member 13 pivotally connected to the mounting piece 12, the elastic member 2 as the spiral spring 20, and the outer end 22 of the spiral spring 20 fixed to a part of the swing piece 11. In addition, since the inner end 21 of the spiral spring 20 is fixed to the pivot pin member 13, the spiral spring 20 can be attached with a simple structure without increasing the number of components, and the rotational resistance moment M can be reliably secured. It can be given to the swing piece 11. Furthermore, it is compact and easy to attach to the inside of the sofa S.

In addition, according to the angle adjusting bracket of the reference example, the swing piece portion 11 attached to the rest portion 3, the attachment piece portion 12 fixed to the fixed side of the sofa S, the swing piece portion 11 and the attachment piece. A pivot pin member 13 pivotally connected to the portion 12, the torsion coil spring 23 is wound around the pivot pin member 13, and the torsion coil spring 23 is wound around the torsion coil spring 23. Since the one end 24 is fixed to a part of the swing piece 11 and the other end 25 is fixed to a part of the mounting piece 12, the structure can be simplified without increasing the number of parts. The torsion coil spring 23 can be attached, and the rotational resistance moment M can be reliably applied to the swing piece 11. Furthermore, it is compact and easy to attach to the inside of the sofa S.

  Further, a pair of parallel wall portions 12a and 12a formed in a circular shape centering on the swing axis X of the swing piece portion 11, and the swing shaft center X as a symmetry axis on each of the walls 12a and 12a. An even number of wedge-shaped window portions 5 and 5 arranged at rotationally symmetric positions and movable within the wedge-shaped window portions 5 and 5 and arranged at a rotationally symmetric position of 180 degrees around the swing axis X. An external tooth shape provided between a pair of floating wedge members 4 and 4 having a tooth surface 4a on one surface side and the walls 12a and 12a and capable of meshing with the tooth surface 4a around the swing axis X And a pair of arcuate gear portions 11b, 11b formed on the spring portion and spring wire members 6, 6 that constantly urge and bias the floating wedge members 4, 4 toward the gear portions 11b, 11b. 11b and the force (load) applied to the floating wedge members 4 and 4 can be evenly distributed. It can, can be a whole to small and thin. The floating wedge members 4 and 4 are in contact with the gear portions 11b and 11b so as to be able to suppress swinging in a well-balanced manner, and the load can be evenly applied, so that the posture can be reliably maintained.

A pair of wall portions 12a and 12a, wedge-shaped window portions 5 and 5, floating wedge members 4 and 4, gear portions 11b and 11b, and spring wire rods 6 and 6 are attached from the direction of the swing axis X. Is formed between the disc-shaped cover members 7 and 7, and the thickness d of the elastic member 2 is 15% to 15% of the thickness W ₀ of the pivot 10. Since the size is set to 100%, sufficient strength and rigidity of the elastic member 2 can be secured. Moreover, the whole can be configured to be relatively thin while providing an appropriate resistance, and the sofa S can be easily attached to the inside.

2 Spring member 3 Rest part 4 Floating wedge member 4a Tooth surface 5 Wedge-shaped window part 6 Spring wire 7 Cover member S Sofa A Standing direction B Inclining direction M Rotational resistance moment d Thickness dimension W ₀ Thickness dimension 10 Joint part DESCRIPTION OF SYMBOLS 11 Oscillating piece part 11b Gear part 12 Mounting piece part 12a Wall part 13 Pivoting pin member 20 Spiral spring 21 Inner end part 22 Outer end part 23 Torsion coil spring 24 One end part 25 Other end part
30 Headrest part
31 Footrest
32 Armrest
40 Backrest
41 Seat X X-axis
E epidermis

Claims (5)

A headrest part (30) attached to the upper end of the backrest part (40) so as to be able to swing back and forth in a standing direction (A) and a tilting direction (B) is provided. From the backrest part (40) to the headrest part (30) used in sofa with the headrest portion with the exterior (30) is stretched such that the tension with a predetermined tension in the final inclination state epidermis (E) (S) in continuous form over, the headrest unit Angle adjusting bracket that can swing (30) in the standing direction (A) and that can prevent the headrest portion (30) from swinging in the tilting direction (B) in multiple stages and hold it at a desired tilt angle. In
The swing piece (11) attached to the headrest part (30), the attachment piece part (12) fixed to the backrest part (40), and the attachment piece part (12) non-rotatably. A pivot pin member (13) which is assembled and pivotally connects the swing piece (11) and the attachment piece (12);
The headrest portion (30) swings in the standing direction (A) when the skin (E) of the tensioned backrest portion (40) is dragged downward by the load of a person sitting on the sofa (S). And a spiral spring (20) for applying a rotational resistance moment (M) as a resistance force for holding the headrest (30) in the final tilted state to the swing piece (11).
The outer end (22) of the spiral spring (20) is fixed to a part of the swing piece (11), and the inner end (21) of the spiral spring (20) is fixed to the pivot. An angle adjusting bracket characterized by being fixed to the binding pin member (13) . A footrest part (31) attached to the front end of the seat part (41) so as to be swingable up and down in a standing direction (A) and a tilting direction (B) is provided, and the footrest part (31) is provided from the seat part (41). The footrest part (31) is used for a sofa (S) having a skin (E) stretched so that the footrest part (31) is tensioned with a predetermined tension in a final tilted state. Angle adjusting bracket that can swing (31) in the standing direction (A), and prevents the footrest portion (31) from swinging in the tilting direction (B) in multiple stages and holds it at a desired tilt angle. In
The swing piece (11) attached to the footrest (31), the attachment piece (12) fixed to the seat (41), and the attachment piece (12) non-rotatably. A pivot pin member (13) which is assembled and pivotally connects the swing piece (11) and the attachment piece (12);
When the skin (E) of the tensioned seat (41) sinks due to the load of a person sitting on the sofa (S), the footrest (31) is prevented from swinging in the standing direction (A). And a spiral spring (20) for applying a rotational resistance moment (M) as a resistance force for holding the footrest portion (31) in the final tilted state to the swing piece portion (11),
The outer end (22) of the spiral spring (20) is fixed to a part of the swing piece (11), and the inner end (21) of the spiral spring (20) is fixed to the pivot. An angle adjusting bracket characterized by being fixed to the binding pin member (13). An armrest portion (32) attached to the side end of the seat portion (41) so as to be able to swing left and right in the standing direction (A) and the tilting direction (B) is provided, and the armrest portion (32) from the seat portion (41) is provided. ) And the armrest (32) is used for a sofa (S) having an epidermis (E) stretched so as to be in a tensioned state with a predetermined tension in a final tilted state. Angle adjustment that allows the part (32) to swing in the standing direction (A) and prevents the armrest part (32) from swinging in the tilting direction (B) in multiple stages and holding it at a desired tilt angle. In the bracket,
The swing piece (11) attached to the armrest (32), the attachment piece (12) fixed to the seat (41), and the attachment piece (12) non-rotatably. A pivot pin member (13) which is assembled and pivotally connects the swing piece (11) and the attachment piece (12);
The armrest (32) is prevented from swinging in the standing direction (A) when the skin (E) of the tensioned seat (41) sinks due to the load of a person sitting on the sofa (S). And a spiral spring (20) for applying a rotational resistance moment (M) to the swing piece (11) as a resistance force for holding the armrest (32) in the final tilted state,
The outer end (22) of the spiral spring (20) is fixed to a part of the swing piece (11), and the inner end (21) of the spiral spring (20) is fixed to the pivot. An angle adjusting bracket characterized by being fixed to the binding pin member (13) . A pair of parallel wall portions (12a) (12a) formed in a circular shape around the swing axis (X) of the swing piece portion (11), and each of the wall portions (12a) (12a) And an even number of wedge-shaped window portions (5) and (5) disposed at rotationally symmetric positions with the pivot axis (X) as the axis of symmetry, and movement within the wedge-shaped window portions (5) and (5) a pair of floating wedge member having a tooth surface (4a) in disposed and having one side in rotational symmetry at 180 degrees about the pivot axis (X) with possible a (4) (4), the A pair of arcuate gear portions (11b) formed between the wall portions (12a) and (12a) and formed in an outer tooth shape that can mesh with the tooth surface (4a) with the swing axis (X) as a center. ) (11b) and a spring wire that constantly urges the floating wedge members (4) and (4) to the gear portions (11b) and (11b). (6) and (6) according to claim 1, equipped with a 2 or 3 the angle-adjustable hinge as claimed. The wall portions (12a) (12a), the wedge-shaped window portions (5) and (5), the floating wedge members (4) and (4), the gear portions (11b) and (11b), and the spring wire material (6) A pivoting portion (10) is constructed in which (6) is housed and assembled between a pair of disc-like cover members (7) (7) attached from the direction of the pivot axis (X).
The thickness dimension (d) of the elastic member (2) is set to 15% to 100% with respect to the thickness dimension (W ₀ ) of the pivot portion (10). The described angle adjustment bracket.

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