WO2021117776A1

WO2021117776A1 - Fastener

Info

Publication number: WO2021117776A1
Application number: PCT/JP2020/045903
Authority: WO
Inventors: 岡田　重夫; 宮前　仁志
Original assignee: 株式会社パイオラックス
Priority date: 2019-12-11
Filing date: 2020-12-09
Publication date: 2021-06-17
Also published as: JP2023027417A

Abstract

This fastener 10 comprises: a flange part 20 that has a through-hole through which a boss section of a first attachment member can be inserted; a pair of wall parts 24 that face each other and extend from the flange part 20; and elastic locking parts 26 that lock to a second attachment member. The wall parts 24 each have a claw section that is formed in an inner surface of each wall part 24 and protrudes in a direction in which the pair of wall parts 24 face each other. The claw sections are locked to the boss sections by means of the relative rotations of the boss section and the fastener 10 around an axis, and in an attachment state, outer surfaces of the pair of the wall parts 24 make contact with the first attachment member or the second attachment member.

Description

Fastener

The present invention relates to a fastener for attaching the first attachment member to the second attachment member.

Patent Document 1 discloses a clip for attaching a mounting member to a plate. The clip comprises an anchor that is inserted into the mounting hole of the plate and a tubular mounting seat that is coupled to a tubular pedestal that protrudes from the mounting member. The mounting seat has a plurality of blades on the inner peripheral surface. The mounting seat is inserted into the pedestal of the mounting member from the tip side along the axis and rotated around the axis so that the blade portion bites into the peripheral surface of the pedestal and is joined.

Japanese Unexamined Patent Publication No. 2008-116035

In the clip disclosed in Patent Document 1, when the blade portion is connected to the peripheral surface of the pedestal, the mounting seat may be deformed so as to bulge outward in the radial direction, and the biting amount may be reduced.

An object of the present invention is to provide a fastener that can be stably attached to the boss portion of the first attachment member.

In order to solve the above problems, one aspect of the present invention is a fastener used for attaching the first attachment member to the second attachment member, and provides an insertion hole through which the boss portion of the first attachment member can be inserted. It includes a flange portion to be provided, a pair of wall portions facing each other and extending from the flange portion, and a locking portion for locking to the second mounting member. The wall portion has a claw portion formed on the inner surface of the wall portion and the pair of wall portions project in opposite directions. The claw portion is locked to the boss portion by the relative rotation of the boss portion and the fastener around the axis, and the outer surfaces of the pair of wall portions come into contact with the first mounting member or the second mounting member in the mounted state.

According to the present invention, it is possible to provide a fastener that can be stably attached to the boss portion of the first attachment member.

It is a perspective view of the fastener of an Example. FIG. 2A is a side view of the fastener, and FIG. 2B is a front view of the fastener. It is a top view of the fastener. It is a perspective view seen from the back side of the 1st mounting member. It is a figure which shows the fastener in the state attached to the 1st attachment member and the 2nd attachment member. It is a figure for demonstrating the rotational operation of the fastener with respect to the 1st attachment member, and is the figure which shows the state before attaching to the 2nd attachment member. It is sectional drawing of the fastener in the state which has been attached to the 1st attachment member and the 2nd attachment member. It is a perspective view of the fastener of a modification. 9 (a) is a side view of the fastener of the modified example, and FIG. 9 (b) is a front view of the fastener of the modified example. 9 is a cross-sectional view taken along the line segment BB of the fastener in the mounted state shown in FIG. 9A.

FIG. 1 is a perspective view of the fastener 10 of the embodiment. FIG. 1A is a perspective view of the fastener 10 viewed from above, and FIG. 1B is a perspective view of the fastener 10 viewed from below. 2 (a) is a side view of the fastener 10, and FIG. 2 (b) is a front view of the fastener 10. Further, FIG. 3 is a plan view of the fastener 10.

The fastener 10 is used to attach the first attachment member to the second attachment member. For example, the fastener 10 is used to fix an in-vehicle part such as a cover material for interior decoration, a trim material, and a garnish material to a vehicle body panel or an interior panel. That is, there are in-vehicle parts as the first mounting member, and a vehicle body panel and an interior panel as the second mounting member. Further, the first mounting member may be an interior panel and the second mounting member may be a vehicle body panel.

The fastener 10 is rotatable around the axis with respect to the first mounting member, and is attached to the first mounting member by rotating around the axis. On the other hand, the fastener 10 is attached to the second attachment member so as not to rotate about the axis. The fastener 10 includes a flange portion 20, a pair of pillar portions 22, a pair of wall portions 24, a plurality of elastic locking portions 26, and a connecting portion 28.

The flange portion 20 is formed in a disk shape. The flange portion 20 has an insertion hole 30 through which the boss portion of the first mounting member can be inserted, and a rotation stop portion 32 that protrudes outward in the radial direction from the outer peripheral edge of the flange portion 20. The rotation stopper 32 is provided to stop the rotation of the fastener 10 around the axis with respect to the first mounting member.

The pair of pillar portions 22 extend from the back surface of the flange portion 20. The direction in which the pillar portion 22 extends is called the axial direction. The connecting portion 28 connects the tip portions of the pair of pillar portions 22. The connecting portion 28 is located on the distal end side of the wall portion 24 and the elastic locking portion 26. The flange portion 20 side of the pillar portion 22 is referred to as a base end portion, the lower end side of the fastener 10 shown in FIG. 2A, and the connecting portion 28 side of the pillar portion 22 is referred to as a tip end portion.

The pair of wall portions 24 face each other and extend from the flange portion 20. The tip portions of the pair of wall portions 24 are connected by the connecting portion 28. The direction in which the pair of wall portions 24 face each other is referred to as a facing direction, and the facing direction is orthogonal to the axial direction. The wall portion 24 has a claw portion 34 formed on the inner surface of the wall portion 24 and a rib 36 formed on the outer surface. The rib 36 is formed in a tapered shape so as to be tapered outward in the opposite direction. A plurality of claw portions 34 are provided side by side along the axial direction on the inner surface of the wall portion 24, and the pair of wall portions 24 project in the opposite direction, that is, inward. As shown in FIG. 3, the claw portion 34 projects toward the inner diameter side from the insertion hole 30. The claw portion 34 can be locked so as to bite into the boss portion of the first mounting member inserted into the insertion hole 30.

The elastic locking portion 26 functions as a locking portion for locking to the second mounting member. The plurality of elastic locking portions 26 extend from the connecting portion 28 toward the flange portion 20. As shown in FIGS. 2A and 2B, four elastic locking portions 26 are formed, and the two elastic locking portions 26 are provided so as to face each other, and a pillar portion is provided between the two elastic locking portions 26. 22 are located respectively.

The elastic locking portion 26 has a locking surface 38 that locks to the back edge of the mounting hole formed in the second mounting member. As shown in FIG. 2A, the locking surface 38 is inclined so as to approach the central axis toward the insertion hole 30 in the facing direction. The elastic locking portion 26 extends from a position on the tip side of the wall portion 24. As a result, the axial length of the elastic locking portion 26 can be made longer than that of the wall portion 24, and the elastic locking portion 26 can be easily bent. By making the elastic locking portion 26 flexible, it is possible to suppress the insertion force when the elastic locking portion 26 is inserted into the mounting hole. On the other hand, since the wall portion 24 is shortened, it is less likely to bend. The wall portion 24 is formed wider than the pillar portion 22. The widths of the pillar portion 22, the wall portion 24, and the elastic locking portion 26 are the lengths in the directions orthogonal to the facing direction and the axial direction.

The connecting portion 28 connects all the tip portions of the pillar portion 22, the wall portion 24, and the elastic locking portion 26. As a result, the rigidity of the fastener 10 can be ensured. By connecting the pair of pillars 22 and the pair of wall 24s by the connecting portion 28, the pillars 22 and the wall 24 can be configured to be less flexible.

FIG. 4 is a perspective view of the first mounting member 12. The first mounting member 12 has a plate portion 40, a boss portion 42, a pair of stoppers 44, a pair of wall portions 46, and a hemispherical protrusion 48. The boss portion 42 projects from the back surface of the plate portion 40 and is formed in a columnar shape. A fastener 10 is connected to the boss portion 42 by a claw portion 34.

The boss portion 42 is formed so that the cylinder is cut out in a pair of notch portions 42a along the axial direction. The boss portion 42 has a pair of curved surfaces 42b and a pair of recessed portions 42c recessed by the cutout portion 42a. The curved surface 42b is an outer peripheral surface having an arcuate cross section. Curved surfaces 42b and recesses 42c are alternately formed in the boss portion 42 in the circumferential direction. The pair of curved surfaces 42b are located diagonally, and the pair of recesses 42c are located diagonally. The outer diameter of the pair of curved surfaces 42b is larger than the outer diameter of the pair of recessed portions 42c. That is, the boss portion 42 has a major axis due to the curved surface 42b and a minor axis due to the recessed portion 42c.

The pair of stoppers 44 project to the back surface of the plate portion 40 and hit the rotation stopper portion 32 to stop the rotation of the fastener 10. The pair of wall portions 46 project from the back surface of the plate portion 40 and face each other. The stopper 44 and the wall portion 46 may interfere with the rotation stopper portion 32 of the fastener 10 to limit the assembly position of the fastener 10. The hemispherical protrusion 48 is formed so as to project from the back surface of the plate portion 40, and hits the rotation stop portion 32 of the fastener 10 to suppress the rotation of the fastener 10.

FIG. 5 is a diagram showing a fastener 10 in a state of being attached to the first attachment member 12 and the second attachment member 14. A mounting hole 14a is formed in the second mounting member 14 in a rectangular shape. The plurality of elastic locking portions 26 are locked to the back edge of the mounting hole 14a to attach the fastener 10 to the second mounting member 14.

By locking the four elastic locking portions 26 in the vicinity of the four corners of the mounting hole 14a, the rotation of the fastener 10 with respect to the second mounting member 14 is restricted. The wall portion 46 is longer in the axial direction than the flange portion 20 and hits the second mounting member 14 in the mounted state, and limits the approach of the first mounting member 12 and the second mounting member 14. The rib 36 of the wall portion 24 is inserted into the mounting hole 14a.

FIG. 6 is a diagram for explaining the rotational operation of the fastener 10 with respect to the first mounting member 12, and shows a state before mounting on the second mounting member 14. FIG. 6A shows a state before the mounting is completed on the first mounting member 12, and FIG. 6B shows a state where the mounting is completed on the first mounting member 12.

In FIG. 6A, the boss portion 42 is inserted into the insertion hole 30 of the fastener 10 and is accommodated between the claw portions 34 facing each other in a close state. The distance between the facing claw portions 34 is set to be substantially the same as the minor diameter RS of the boss portion 42, or longer than the minor diameter RS. Therefore, the claw portion 34 is in a state of being close to or in contact with the boss portion 42, but not being strongly pressed against each other.

As a result, when the position of the recessed portion 42c of the boss portion 42 is aligned with the opposite direction of the claw portion 34, the boss portion 42 is smoothly inserted into the insertion hole 30. On the other hand, when the position of the curved surface 42b of the boss portion 42 is aligned with the opposite direction of the claw portion 34, the boss portion 42 is very difficult to insert. This is because the base end portion and the tip end portion of the wall portion 24 are connected to the flange portion 20 and the connecting portion 28, so that the wall portion 24 is hard to bend.

After the boss portion 42 is inserted into the insertion hole 30, the fastener 10 is rotated about the axis shown in FIG. 6A. When the fastener 10 is rotated, the rotation stopper 32 shown in FIG. 3 hits the stopper 44 shown in FIG. 4 and is stopped at a position rotated by 90 °. Further, the hemispherical protrusion 48 suppresses the rotation of the claw portion 34 in the unlocking direction. The distance between the facing claw portions 34 is set to be shorter than the major axis RL of the boss portion 42.

When the fastener 10 rotates about the axis, the claw portion 34 hits the curved surface 42b and locks so as to bite into it. Locking the claw portion 34 so as to bite into the curved surface 42b means pressing the curved surface 42b to dent it and fitting it into the recessed curved surface 42b. That is, the claw portion 34 is locked to the boss portion 42 by the relative rotation of the boss portion 42 and the fastener 10 around the axis. As a result, the fastener 10 is attached to the first attachment member 12.

By locking the fastener 10 to the boss portion 42 of the first mounting member 12, it is not necessary to form a mounting hole for the fastener 10 in the first mounting member 12, and the plate portion 40 of the first mounting member 12 is designed. The degree of freedom can be increased. Further, by attaching by rotating the fastener 10, the space where the fastener 10 can slide with respect to the first attachment member 12 is not required.

The curved surface 42b that is smooth in the circumferential direction makes it easier for the fastener 10 to rotate while the claw portion 34 presses the curved surface 42b. Further, since the pillar portion 22 is connected to the flange portion 20 and the connecting portion 28, the fastener 10 is less likely to be twisted when rotating. Since the pair of pillar portions 22 are located on both sides of the boss portion 42 in the width direction, it is possible to prevent the fastener 10 from being inclined in the width direction with respect to the boss portion 42.

FIG. 7 is a cross-sectional view of the fastener 10 in a state where the first mounting member 12 and the second mounting member 14 are completely mounted. A plurality of claw portions 34 are locked so as to bite into the curved surface 42b of the boss portion 42.

In the mounted state, the outer surfaces (ribs 36) of the pair of wall portions 24 come into contact with the inner surface of the mounting holes 14a, and the pair of wall portions 24 are in a state in which the outward deformation in the opposite direction is restricted. By limiting the deformation of the wall portion 24 in this way, it is possible to prevent the claw portion 34 from being unlocked. Further, when the fastener 10 is rotated and the claw portion 34 is locked to the boss portion 42, the wall portion 24 may be slightly deformed by receiving an outward force in the opposite direction from the boss portion 42. However, since the outer surface of the wall portion 24 comes into contact with the inner surface of the mounting hole 14a, the wall portion 24 receives an inward force in the opposite direction from the inner surface of the mounting hole 14a, and the claw portion 34 may sufficiently bite into the boss portion 42. it can. Further, since the tip portions of the pair of wall portions 24 are connected by the connecting portion 28, it is difficult for the wall portions 24 to expand. Since the pair of pillar portions 22 are formed over the flange portion 20 and the connecting portion 28, it is possible to suppress deformation in which the pair of wall portions 24 bends outward in the opposite direction and the axial length of the wall portions 24 becomes short. Can be done.

By locking the plurality of claw portions 34 in parallel in the axial direction, the fastener 10 is less likely to be tilted with respect to the boss portion 42. By locking the plurality of claw portions 34 to the boss portions 42, it is possible to secure the pulling force even if the biting amount of each claw portion 34 is reduced. By reducing the amount of biting of the claws 34 one by one, the rotational operation force of the fastener 10 can be reduced, and the amount of change of the pair of wall portions 24 outward in the opposite direction can be suppressed. Further, since any of the claw portions 34 may be locked, the fastener 10 can be prevented from coming off from the boss portion 42.

The locking surface 38 of the elastic locking portion 26 and the wall portion 24 are provided so as to overlap each other in the axial position. That is, the axial positions of the locking surface 38 and the wall portion 24 partially overlap and are arranged at similar heights. As a result, the axial length of the fastener 10 can be shortened, and the distance between the first mounting member 12 and the second mounting member 14 can be set to be short. That is, since the first mounting member 12 can be mounted close to the second mounting member 14, a stable mounting state can be obtained.

The method of attaching the fastener 10 will be described. The boss portion 42 of the first mounting member 12 is inserted into the insertion hole 30 of the fastener 10, the first mounting member 12 is rotated about an axis, and the claw portion 34 is locked so as to bite into the curved surface 42b of the boss portion 42. To do. Next, the fastener 10 is inserted into the mounting hole 14a of the second mounting member 14 from the connecting portion 28 side, the elastic locking portion 26 is locked to the edge of the mounting hole 14a, and the fastener 10 is inserted into the second mounting member 14. It is attached. As a result, the first mounting member 12 is mounted on the second mounting member 14.

FIG. 8 is a perspective view of the fastener 100 of the modified example. Further, FIG. 9A is a side view of the fastener 100 of the modified example, and FIG. 9B is a front view of the fastener 100 of the modified example. FIG. 9A shows a state in which the fastener 100 is attached to the first attachment member 12 and the second attachment member 14, and the first attachment member 12 and the second attachment member 14 have a cross section different from that of the fastener 100. Is shown. Further, FIG. 10 is a cross-sectional view taken along line BB of the fastener 100 in the mounted state shown in FIG. 9A.

The fastener 100 of the modified example has a different arrangement of the elastic locking portion 126 as compared with the fastener 10 shown in FIG. 1 (a). In the fastener 10 shown in FIG. 1A, the elastic locking portion 26 is provided on the upper side of the connecting portion 28, but in the fastener 100 shown in FIG. 8, the elastic locking portion is provided on the lower side of the connecting portion 128. 126 is provided.

The fastener 100 includes a flange portion 120, a pillar portion 122, a wall portion 124, an elastic locking portion 126, a connecting portion 128, an umbrella-shaped portion 50, and a shaft portion 52. The flange portion 120, the column portion 122, the wall portion 124, and the elastic locking portion 126 of the modified example have the same functions as the flange portion 20, the column portion 22, the wall portion 24, and the elastic locking portion 26 shown in FIG. 1 (a). Has.

The flange portion 120 is formed with an insertion hole 130 through which the boss portion 42 can be inserted. The pair of column portions 122 and the pair of wall portions 124 are supported by the flange portion 120 and the connecting portion 128 at the base end portion and the tip end portion. A claw portion 134 is formed on the inner surface of the wall portion 124, and a rib 136 is formed on the outer surface. A plurality of claw portions 134 are provided in parallel along the axial direction.

The connecting portion 128 is provided so as to face the flange portion 120, and connects the tip portions of the pair of pillar portions 122 and the pair of wall portions 124. An umbrella-shaped portion 50 projects from the outer peripheral edge of the connecting portion 128. The umbrella-shaped portion 50 comes into contact with the surface of the second mounting member 14 as shown in FIG. 9A. The fastener 100 can be used for waterproofing by closing the mounting hole 14a with the umbrella-shaped portion 50.

The elastic locking portion 126 is provided on the back side of the connecting portion 128. The shaft portion 52 extends from the back surface of the connecting portion 128, and the elastic locking portion 126 extends from the tip end portion of the shaft portion 52 toward the connecting portion 128 side. FIG. 9A shows how the elastic locking portion 126 is locked to the back edge of the mounting hole 14a of the second mounting member 14. The mounting hole 14a shown in FIG. 9A may have a circular shape. In the fastener 100, since a configuration for locking to the second mounting member 14 is provided on the back side of the connecting portion 128, the degree of freedom in design is high. Therefore, the configuration for locking to the second mounting member 14 is not limited to the shape of the elastic locking portion 126, and may be another mounting method. For example, it may have a configuration in which it is locked to a stud bolt provided on the second mounting member 14.

In FIG. 10, the rotation stop portion 132 is located between the wall portion 46 and the hemispherical protrusion 48, and the rotation of the fastener 10 is restricted in the mounted state. Of course, if the fastener 10 is rotated with a large force at the time of attachment and removal, the rotation stopper 132 can get over the hemispherical protrusion 48.

As shown in FIGS. 9A and 10, the claw portion 134 is locked so as to bite into the boss portion 42. In the mounted state, the outer surfaces (ribs 136) of the pair of wall portions 124 come into contact with the wall portions 46 of the first mounting member 12, and the pair of wall portions 124 are restricted from being deformed outward in the opposite direction. As a result, the wall portion 124 is less likely to bend, and it is possible to prevent the claw portion 134 from being unlocked. Further, when the fastener 100 is rotated and the claw portion 134 is locked to the boss portion 42, the wall portion 124 may be slightly deformed by receiving an outward force in the opposite direction from the boss portion 42. However, since the outer surface of the wall portion 124 abuts on the wall portion 46 of the first mounting member 12, the wall portion 124 receives an inward force in the opposite direction from the wall portion 46 of the first mounting member 12, and the claw portion 134 is bossed. It can sufficiently bite into the part 42.

The present invention is not limited to each of the above-described embodiments, and modifications such as various design changes can be added to each embodiment based on the knowledge of those skilled in the art, and such modifications are added. The examples given may also be included in the scope of the present invention.

10 fasteners, 12 first mounting members, 14 second mounting members, 14a mounting holes, 20 flanges, 22 pillars, 24 walls, 26 elastic locking parts, 28 connecting parts, 30 insertion holes, 32 rotation stoppers. , 34 claws, 36 ribs, 38 locking surfaces, 40 plates, 42 bosses, 42a notches, 42b curved surfaces, 42c recesses, 44 stoppers, 46 walls.

Claims

A fastener used to attach the first attachment member to the second attachment member.
A flange portion having an insertion hole through which the boss portion of the first mounting member can be inserted, and a flange portion.
A pair of wall portions facing each other and extending from the flange portion,
A locking portion that locks to the second mounting member is provided.
The wall portion has a claw portion formed on the inner surface of the wall portion and the pair of the wall portions project in opposite directions.
The claw portion is locked to the boss portion by the relative rotation of the boss portion and the fastener around the axis, and the outer surface of the pair of the wall portions abuts on the first mounting member or the second mounting member in the mounted state. Fasteners featuring.
The fastener according to claim 1, wherein a plurality of the claw portions are provided side by side along the axial direction.
A connecting portion that connects the tips of the pair of wall portions,
A pair of pillars extending from the flange are further provided.
The fastener according to claim 1 or 2, wherein the connecting portion connects a pair of tip portions of the pillar portions.
The locking portion has a plurality of elastic locking portions extending from the connecting portion toward the flange portion.
The elastic locking portion is locked to the edge of the mounting hole formed in the second mounting member.
The outer surface of the pair of the wall portions abuts on the inner surface of the mounting hole of the second mounting member.
The fastener according to claim 3, wherein the locking surface of the elastic locking portion and the wall portion are provided so as to overlap each other in an axial position.
The fastener according to claim 4, wherein the elastic locking portion extends from a position on the tip end side of the pair of the wall portions.