JP2015121269A - Fastening structure, chamber structure having the fastening structure, and air blower with chamber having the fastening structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fastening structure capable of certainly engaging a stationary portion component with a mounting member even in a narrow space place without depending on joining such as welding.SOLUTION: In a fastening structure for engaging a stationary portion component 2 with a mounting member 1, the mounting member 1 includes a mounting hole 3 opened to the mounting member 1 and a projection part 4 protruding from the mounting member 1, the stationary portion component 2 includes a claw part 7 erected from the stationary portion component 2 and a hole 8 opened to the stationary portion component 2, in which the claw part 7 is inserted into the mounting hole 3 while the stationary portion component 2 is moved relative to the mounting member 1 and the projection part 4 is brought into contact with the stationary portion component 2 so as to engage the mounting member 1 with the stationary portion component 2.

Description

  The present invention relates to a fastening structure for engaging two members, a chamber structure provided with the fastening structure, and a blower with a chamber provided with the fastening structure.

  Conventionally, when fixing a silencing material or a heat insulating material formed of a porous material or the like, the fixing member is welded to the mounting member on the back of the silencing material, and the fixing member penetrating the silencing material is bent on the surface side of the silencing material. Then, it was bitten and held on the sheet metal by the repulsive force of the silencer (see, for example, Patent Document 1).

JP 59-12749 A

  Since the conventional fixing member for the silencer is fixed to the attachment member on the back surface by welding, the fixing member must be fixed to the attachment member before the silencer is attached in the manufacturing process. Therefore, it has been impossible to attach the fixing member after temporarily placing the silencer in a small space. In addition, because it is attached using the repulsive force of the sound deadening material, due to variations in the size and density of the sound deadening material, due to the sag of the porous material due to deterioration over time, etc., it becomes impossible to obtain a sufficient repulsive force of the porous material, There has also been a problem that the silencing effect is reduced such that the silencing material is rattled or the silencing material is displaced from the fixed member.

  The fastening structure according to the present invention is made in order to solve the above-described problems, and can reliably engage the fixing member with the mounting member even in a small space, regardless of joining such as welding. An object of the present invention is to provide a fastening structure that can be provided, a chamber structure provided with the fastening structure, and a blower with a chamber provided with the fastening structure.

  The fastening structure according to the present invention is a fastening structure that engages an attachment member and a fixing member, and the attachment member has an attachment hole that opens to the attachment member, and a protrusion that protrudes from the attachment member. The fixing member has a claw portion erected from the fixing member and a hole portion opened to the fixing member. The fixing member is inserted into the attachment hole, and the fixing member is moved with respect to the attachment member, and the protrusion The part is brought into contact with the fixing member to engage the attachment member and the fixing member.

  According to the fastening structure according to the present invention, the fixing member can be fixed to the mounting member by retrofitting regardless of the joining such as welding performed in advance, so the work process is not concerned and the fixing is possible even in a narrow space. The member can be securely fixed to the attachment member by a simple procedure.

3 is a perspective view showing a fastening structure of a fixing member according to Embodiment 1. FIG. It is a perspective view which shows attachment of the fixing member which concerns on Embodiment 1 in time series. It is a perspective view which shows attachment of the fixing member which concerns on Embodiment 2 in time series. It is a perspective view which shows the holding structure of the silencer which hold | maintains the silencer in the chamber which concerns on Embodiment 3. FIG. It is a perspective view which shows the holding structure of the silencer which hold | maintains the silencer in the chamber which concerns on Embodiment 4. FIG. It is a perspective view which shows the holding structure of the silencer which hold | maintains the silencer in the chamber which concerns on Embodiment 5. FIG. It is a perspective view which shows the holding structure of the silencer which hold | maintains the silencer in the chamber which concerns on Embodiment 6. FIG. FIG. 10 is a perspective view showing a silencing material holding structure for holding a silencing material in a chamber according to a seventh embodiment. FIG. 10 is a perspective view showing a silencing material holding structure for holding a silencing material in a chamber of a blower according to Embodiment 8.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Moreover, in the following drawings, the relationship of the size of each component may be different from the actual one.

Embodiment 1 FIG.
1 is a perspective view showing a fastening structure of a fixing member according to Embodiment 1. FIG.
FIG. 2 is a perspective view showing the attachment of the fixing member according to the first embodiment in time series.
The whole structure of the attachment member 1 and the fixing member 2 is demonstrated using FIG. 1, FIG.

  As shown in FIGS. 1 and 2, the attachment member 1 according to the first embodiment is formed of a material that can be elastically deformed, and employs a metal plate material such as a steel plate or an aluminum plate, or a resin plate material, for example. can do. An attachment hole 3 and a protrusion 4 are formed on the attachment member 1 formed of the flat plate material. As shown in FIG. 2, the mounting hole 3 includes, for example, two openings, a wide, substantially rectangular insertion portion 9, and a narrow slit portion 10 formed continuously from the insertion portion 9. ing. Further, the protrusion 4 is formed by cutting and raising from the back side of the attachment member 1, and in the cross-sectional shape, the inclined portion 4 a whose one end side is smoothly raised from the surface of the attachment member 1, and the other end side is the surface of the attachment member 1. In contrast, it has a substantially ¼ sphere shape composed of a vertical portion 4b that rises substantially perpendicularly. Therefore, the planar view shape of the protrusion part 4 is a substantially semicircle.

  In the first embodiment, as described above, the attachment hole 3 includes the wide and substantially rectangular insertion portion 9 and the narrow slit portion 10 formed continuously from the insertion portion 9. However, the insertion portion 9 is not rectangular, and other shapes such as a circular shape can be employed. Further, as for the protrusion 4, the ¼ sphere shape is shown as an example, but a triangular pyramid shape, a wedge shape, or the like can be adopted.

Next, the shape of the fixing member 2 according to Embodiment 1 will be described.
As shown in FIG. 1, the fixing member 2 includes a flat plate-like support portion 6 disposed on the attachment member 1 and a holding portion 5 erected substantially vertically from the support portion 6. On the support portion 6, a claw portion 7 cut and raised from the support portion 6 is erected on the surface opposite to the holding portion 5. For example, two claw portions 7 are cut and raised at positions corresponding to the attachment holes 3 of the attachment member 1. In this case, for example, it is possible to adopt a shape in which the inner sides of the two claw portions 7 facing each other are left in the support portion 6 and cut into a U shape and the outer sides are cut out.

Further, a hole 8 is opened in the support portion 6. The hole 8 opens at a position corresponding to the protrusion 4 of the attachment member 1 in the engagement-like body.
The holding unit 5 can adopt various shapes depending on the shape of the held member held by the fixing member 2, the holding method, and the like. However, the holding unit 5 according to the first embodiment is L with respect to the support unit 6. It has a shape bent into a letter shape.

Next, the time until the fixing member 2 according to Embodiment 1 is engaged with the attachment member 1 will be described in time series with reference to FIG.
First, as shown in FIG. 2A, the fixing member 2 is approached from a direction perpendicular to the mounting member 1. Next, in FIG. 2B, the claw portion 7 of the fixing member 2 is inserted into the insertion portion 9 of the attachment hole 3 of the attachment member 1. At this time, the protruding portion 4 of the attachment member 1 is located at a location separated from the one end portion 6 a in the traveling direction of the support portion 6. Then, the fixing member 2 is slid in the direction of the protrusion 4 of the attachment member 1. Then, as shown in FIG. 2C, the fixing member 2 moves to a place where the one end portion 6 a in the traveling direction of the support portion 6 comes into contact with the protruding portion 4 of the mounting member 1 with a small sliding force. At this time, the two claw portions 7 of the fixing member 2 begin to be inserted into the narrow slit portion 10 from the insertion portion 9 of the attachment hole 3.

  Then, when the force for sliding the fixing member 2 is increased from the state in which the one end portion 6a of the supporting portion 6 in the traveling direction of FIG. The part 6a rides on the inclined part 4a of the protrusion part 4, and the attachment member 1 or the support part 6 is elastically deformed (FIG. 2 (d)). When a sliding force is further applied to the fixing member 2 from this state, the protrusion 4 is fitted into the hole 8 of the fixing member 2, and the attachment member 1 and the fixing member 2 are engaged (FIG. 2 (e)). . At this time, the vertical portion 4 b of the protruding portion 4 abuts on the inner periphery of the hole portion 8 to prevent the fixing member 2 from being detached from the attachment member 1. Further, since the two claw portions 7 of the fixing member 2 are fitted in a state of being completely inserted into the slit portion 10 of the mounting hole 3, rattling due to an external force applied to the fixing member 2 does not occur.

  According to the fastening structure of the fixing member 2 according to the first embodiment as described above, the fixing member 2 can be slid and fixed with respect to the mounting member 1 without being joined by welding or the like in advance. Therefore, it is possible to securely fix the fixing member 2 and the held member to the mounting member 1 in a simple procedure without worrying about the work process.

Embodiment 2. FIG.
FIG. 3 is a perspective view showing attachment of the fixing member according to the second embodiment in time series.
The process until the fixing member 2 according to Embodiment 2 is engaged with the attachment member 1 will be described in time series with reference to FIG.
The difference between the mounting structure of the fixing member 2 according to the second embodiment and the mounting structure of the fixing member 2 according to the first embodiment is that the positions of the protrusion 4 of the mounting member 1 and the hole 8 of the fixing member 2. It is a relationship. That is, the protrusion 4 of the mounting member 1 and the hole 8 of the fixing member 2 are provided at positions opposite to those of the first embodiment with respect to the sliding direction of the fixing member 2 when engaged. .

  First, as shown in FIG. 3A, the fixing member 2 is approached from a direction perpendicular to the attachment member 1. Next, in FIG. 3B, the claw portion 7 of the fixing member 2 is inserted into the insertion portion 9 of the attachment hole 3 of the attachment member 1. At this time, the protrusion 4 of the attachment member 1 is located in the hole 8 of the fixing member 2. Then, the fixing member 2 is slid in the direction of the one end portion 6 a of the support portion 6.

  Then, the inclined portion 4 a of the protrusion 4 that has moved relatively from the inside of the hole portion 8 of the fixing member 2 comes into contact with the other end portion 6 b side of the support portion 6 in the inner periphery of the hole portion 8. When the force for sliding the fixing member 2 is increased from this state, the other end 6b side of the support portion 6 rides on the inclined portion 4a of the projection portion 4, and the attachment member 1 or the support portion 6 is elastically deformed (FIG. 3 ( c)). When a sliding force is further applied to the fixing member 2 from this state, the other end portion 6b side of the support portion 6 gets over the protruding portion 4 and comes into contact with the protruding portion 4 as shown in FIG. And engage. At this time, the vertical portion 4 b of the protrusion 4 abuts against the other end portion 6 b of the support portion 6 to prevent the fixing member 2 from being detached from the attachment member 1. In addition, since the two claw portions 7 of the fixing member 2 are completely inserted and fitted into the slit portion 10 of the mounting hole 3, rattling due to an external force applied to the fixing member 2 does not occur.

  Even with the fastening structure of the fixing member 2 according to the second embodiment as described above, the fixing member 2 is slid with respect to the attachment member 1 without being joined in advance by welding or the like as in the first embodiment. Therefore, it is possible to securely fix the fixing member 2 and the held member to the mounting member 1 in a simple procedure even in a narrow space.

Embodiment 3 FIG.
FIG. 4 is a perspective view showing a silencing material holding structure that holds the silencing material in the chamber according to the third embodiment.
The holding structure for the sound deadening material 13 according to the third embodiment is an embodiment in which the fixing member 2 according to the first and second embodiments is applied as a holding structure for the sound deadening material 13 in the chamber 11. The chamber 11 can be applied to a silencer chamber in which air flows, a silencer duct, a silencer air outlet box, a blower with a silencer box, and the like.

  As shown in FIG. 4, a silencer 13 is disposed on the back surface 12 side of the rectangular parallelepiped chamber 11 so as to contact the back surface 12. The silencer 13 is a rectangular parallelepiped arranged so that, for example, five surfaces are in contact with the inner surface of the chamber 11. The silencer 13 is made of a porous material such as glass wool, rock wool, or urethane. When such a silencer 13 is fixed to the back surface 12 side of the chamber 11, the mounting structure of the fixing member 2 according to the first and second embodiments is used. Hereinafter, the holding structure of the sound deadening material 13 will be described.

  Two opposing surfaces of the chamber 11 function as an attachment member 1 for attaching the fixing member 2, and an attachment hole 3 and a protrusion 4 are formed. The fixing member 2 according to Embodiment 1 and Embodiment 2 is attached to the attachment member 1. The attaching method is as shown in the time series of attaching the attaching structure of the fixing member 2 shown in FIG. 2 and FIG.

  In order to attach the silencer 13 in the chamber 11 according to the third embodiment, the silencer 13 is disposed on the back surface 12 side of the chamber 11, and then the two facing attachment members 1 of the chamber 11 adjacent to the back surface 12. The support portion 6 of the fixing member 2 is attached to. Then, the holding portion 5 of the fixing member 2 comes into contact with the surface of the sound deadening material 13, and the sound deadening material 13 is held between the back surface 12 of the chamber 11 and the holding portion 5.

  As described above, according to the third embodiment, the sound deadening material 13 is held between the back surface 12 of the chamber 11 and the holding portion 5 of the fixing member 2, so that the sound deadening material 13 is pressed planarly by the holding portion 5. Therefore, no damage (such as a fixing hole or a concave portion of a compression mark) is caused on the sound deadening material 13 by the fixing member 2, and the sound deadening action is not reduced. Moreover, since the fixing member 2 can be slid and fixed with respect to the attachment member 1 from before the sound deadening material 13, the sound deadening material 13 can be fixed to the chamber 11 in a simple procedure even in a narrow space.

Embodiment 4 FIG.
FIG. 5 is a perspective view showing a silencing material holding structure that holds the silencing material in the chamber according to the fourth embodiment.
The holding structure for the sound deadening material 13 according to the fourth embodiment is an embodiment in which the fixing member 2 according to the first and second embodiments is applied as the holding structure for the sound deadening material 13 in the chamber 11 as in the third embodiment. is there.

The shape of the fixing member 2 according to the fourth embodiment is different from that of the fixing member 2 according to the first to third embodiments in that it has a U-shaped cross section in which the holding portions 5 are erected on both ends of the support portion 6. .
An attachment hole 3 and a projection 4 are formed at substantially the center of the two opposing surfaces of the chamber 11 and function as an attachment member 1 for attaching the fixing member 2. The fixing member 2 is attached to the two attachment members 1 so as to face each other. The attaching method is as shown in the time series of attaching the attaching structure of the fixing member 2 shown in FIG. 2 and FIG.

In order to attach the silencer 13 in the chamber 11 according to the fourth embodiment, the support portion 6 of the fixing member 2 is attached to the two opposing attachment members 1 of the chamber 11 adjacent to the front lid 15. At this time, the surface of the holding part 5 of the fixing member 2 is arranged so as to be perpendicular to the front cover 15.
Next, the silencer 13 is inserted between the pair of holding portions 5 of the fixing member 2 facing each other from the front lid 15 side. Finally, the front lid 15 is fixed to the chamber 11 and the sound deadening material 13 is fixed inside the chamber 11.
Then, the pair of holding portions 5 of the fixing member 2 abuts on both surfaces of the sound deadening material 13, and the sound deadening material 13 is held between the back surface 12 of the chamber 11, the front lid 15 and the pair of holding portions 5.

  As described above, according to the fourth embodiment, the muffler 13 is held between the back surface 12 of the chamber 11, the front cover 15, and the pair of holding portions 5 of the fixing member 2, so that the pair of holding portions 5 Since the sound deadening material 13 is pressed in a planar manner, damage to the sound deadening material 13 due to the fixing member 2 (such as a fixing hole or a concave portion of a compression mark) does not occur, and the sound deadening action is not reduced. Further, since the silencer 13 can be inserted and fixed to the pair of holding portions 5 of the fixing member 2 from the front lid 15 side, the silencer 13 can be fixed to the chamber 11 in a simple procedure even in a narrow space. Can do.

Embodiment 5 FIG.
FIG. 6 is a perspective view showing a silencing material holding structure that holds the silencing material in the chamber according to the fifth embodiment.
The holding structure of the sound deadening material 13 according to the fifth embodiment is different from the fixing member 2 according to the fourth embodiment in that a burr 16 is provided on the holding portion 5 of the fixing member 2 according to the fourth embodiment.
The burr 16 is provided on the same side of the pair of holding parts 5 so as to be bent slightly inward with respect to the surface of the holding part 5. Although the shape of the burr 16 can be a rectangular shape or a semicircular shape, it is desirable that the tip is formed to be a triangular apex.

  By providing the burr part 16 according to the fifth embodiment on the fixing member 2, the front end of the burr part 16 bites into the muffler 13 when the muffler 13 is inserted into the pair of holding parts 5. Suppressing to the 15 side is suppressed. Therefore, since the sound deadening material 13 is pressed against the back surface 12 side of the chamber 11 and does not move, it is possible to prevent the sound deadening effect from being reduced.

Embodiment 6 FIG.
FIG. 7 is a perspective view showing a silencing material holding structure that holds the silencing material in the chamber according to the sixth embodiment.
The holding structure of the sound deadening material 13 according to the sixth embodiment is the same as that of the fourth embodiment in that three holding portions 5 of the fixing member 2 according to the fourth embodiment are provided around the support portion 6 in a U-shape. Different from the fixing member 2.
Thus, by arranging the holding unit 5 according to the sixth embodiment on three surfaces, the sound deadening material 13 can be held between the holding unit 5 and the back surface 12 of the chamber 11, and it comes out to the front lid 15 side. It suppresses that. Therefore, since the sound deadening material 13 is pressed against the back surface 12 side of the chamber 11 and does not move, it is possible to prevent the sound deadening effect from being reduced.

Embodiment 7 FIG.
FIG. 8 is a perspective view showing a silencing material holding structure that holds the silencing material in the chamber according to the seventh embodiment.
The holding structure of the sound deadening material 13 according to the seventh embodiment is the same as that of the fourth embodiment in that four holding portions 5 of the fixing member 2 according to the fourth embodiment are provided in a square shape around the support portion 6. Different from the fixing member 2.
Thus, by arranging the holding parts 5 according to the seventh embodiment on four surfaces, the sound deadening material 13 can be held in the four holding parts 5 and it is prevented from coming out to the front lid 15 side. To do. Therefore, since the sound deadening material 13 does not move from within the holding part 5 of the pair of fixing members 2, it is possible to prevent the sound deadening effect from being reduced.

Embodiment 8 FIG.
FIG. 9 is a perspective view showing a silencing material holding structure that holds the silencing material in the chamber of the blower according to the eighth embodiment.
The structure for holding the silencer 13 of the blower 17 according to the eighth embodiment is an embodiment in which the fixing member 2 according to the first to seventh embodiments is used for fixing the silencer 13 in the silencer chamber 18 of the blower 17. .
As shown in FIG. 9, the blower 17 according to the eighth embodiment incorporates a multi-blade centrifugal fan such as a single suction sirocco fan or a double suction sirocco fan in a silencer chamber 18. The silencer chamber 18 is provided with duct connection ports 19 on the air suction side and the discharge side. The sound deadening chamber 18 may be a box made of metal or resin. The two opposing surfaces of the silencer chamber 18 are applied as the attachment member 1 according to the first to seventh embodiments. In FIG. 9, two opposing surfaces that are in plan view are the attachment members 1.

The mounting member 1 is formed with mounting holes 3 and protrusions 4 for fixing the fixing members 2 according to the first to seventh embodiments. The method of attaching the fixing member 2 to the attachment hole 3 and the protrusion 4 is as described in the time series shown in FIGS.
Then, the silencer 13 is fixed in the silencer chamber 18 by attaching the silencer 13 to the fixing member 2. FIG. 9 is an example in which the sound deadening material 13 is fixed at a position facing the suction port 17 a of the blower 17. In this case, both ends of the silencer 13 are in contact with the blower 17 and the inner wall of the silencer chamber 18. In addition to this example, it is also possible to arrange the silencer 13 so as to contact the inner wall of the silencer chamber 18.

Thus, by applying the fixing member 2 according to Embodiments 1 to 7 to the fixing of the silencer 13 in the silencer chamber 18 of the blower 17 according to Embodiment 8, the silencer is planarly held by the holding unit 5. Since 13 is pressed, damage to the sound deadening material 13 by the fixing member 2 (such as a fixing hole or a concave portion of a compression mark) does not occur, and the sound deadening action does not decrease. Further, for example, if the fixing member 2 according to Embodiments 4 and 5 is used, the silencer 13 can be inserted and fixed to the pair of holding portions 5 of the fixing member 2, so the silencer 13 can be used even in a narrow space. Can be fixed to the chamber 11 by a simple procedure.
Further, by adopting a configuration in which the silencer 13 is not displaced and moved from the fixing member 2 like the silencer 13 according to the third to seventh embodiments, the silencer 13 is fixed even if vibration is generated by the blower 17. It is possible to prevent the noise reduction effect from deviating from the member 2.

  In Embodiment 1-8, although the example which shape | molded 2 pairs of attachment holes 3 of the attachment member 1 and the nail | claw part 7 of the fixing member 2 was shown, it may be 1 pair or 3 pairs or more. Moreover, although the example which shape | molded 1 pair of the projection parts 4 of the attachment member 1 and the hole part 8 of the fixing member 2 was shown, you may shape | mold 2 pairs or more. Furthermore, although the example which has arrange | positioned the attachment hole 3 and the protrusion part 4 of the attachment member 1, and the nail | claw part 7 and the hole part 8 of the fixing member 2 in parallel with the moving direction at the time of engagement was shown, it is perpendicular | vertical to a moving direction. They may be arranged side by side in any direction.

  DESCRIPTION OF SYMBOLS 1 Attachment member, 2 Fixing member, 3 Attachment hole, 4 Protrusion part, 4a Inclination part, 4b Vertical part, 5 Holding part, 6 Support part, 6a One end part, 6b Other end part, 7 Claw part, 8 Hole part, 9 Insertion part, 10 slit part, 11 chamber, 12 back surface, 13 sound deadening material, 15 front cover, 16 burr part, 17 blower, 17a suction port, 18 sound deadening chamber, 19 duct connection port.

Claims (14)

A fastening structure for engaging a mounting member and a fixing member,
The attachment member has an attachment hole that opens to the attachment member, and a protrusion that protrudes from the attachment member,
The fixing member has a claw portion standing from the fixing member, and a hole portion opened to the fixing member,
The claw portion is inserted into the mounting hole and the fixing member is moved relative to the mounting member, and the protrusion is brought into contact with the fixing member to engage the mounting member with the fixing member. Characteristic fastening structure.   The fastening structure according to claim 1, wherein the attachment member and the fixing member are engaged with each other by fitting the protrusion into the hole.   The fastening structure according to claim 1, wherein the projecting portion is brought into contact with a peripheral edge of the fixing member to engage the attachment member and the fixing member. The mounting hole includes an insertion portion into which the claw portion is inserted, and a slit portion in which the claw portion moves and engages in the first direction from the insertion portion,
The length of the said slit part is formed shorter than the length of the said insertion part in the 2nd direction orthogonal to the said 1st direction, The any one of Claims 1-3 characterized by the above-mentioned. Fastening structure.   The fastening structure according to any one of claims 1 to 4, wherein the protrusion is formed by a vertical portion and an inclined portion that rise from the mounting member.   The fastening structure according to claim 1, wherein a plurality of sets of the attachment holes and the claw portions are formed.   The said fixing member has the support part in which the said nail | claw part and the said hole part were formed, and the holding | maintenance part erected from the said support part holding a to-be-held member. The fastening structure according to any one of the above.   The fastening structure according to claim 7, wherein the held member is a sound deadening material formed of a porous body.   The fastening structure according to claim 7 or 8, wherein the holding portion is provided in parallel with the support portion in parallel.   The fastening structure according to claim 9, wherein the holding portion includes a burr portion that prevents the held member from being pulled out in the insertion direction.   The fastening structure according to claim 7 or 8, wherein the holding portion is erected in a U-shape from the support portion.   The fastening structure according to claim 7 or 8, wherein the holding portion is erected in a square shape from the support portion. The mounting member of the fastening structure according to any one of claims 1 to 12 is configured as two opposing surfaces of a rectangular parallelepiped chamber,
A chamber structure, wherein a member to be held is sandwiched between a pair of the fixing members fastened to the mounting member.   A blower with a chamber, wherein a duct connection port is provided on two opposing surfaces of the chamber structure according to claim 13, and the blower is built in the chamber structure.

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