Fastening structure

Abstract

Provided is a fastening structure that improves stability while allowing manufacturing errors. A fastening structure (1) is provided with: a panel (3) in which a reference hole (7A) and at least one sub-hole (7B) are formed; a bracket (4); and the buckles (1) are respectively combined with the reference holes and the auxiliary holes. Each of the buckles has a buttonhole body (15) and a pin (16). The buttonhole body has: a main body portion (22) having a receiving hole (21); a pair of locking claws (24) extending from the periphery of the accommodating hole of the main body part along the axis (A) of the accommodating hole; the pin has a shaft portion (31) inserted into the receiving hole. And each main body part and the bracket are respectively formed into a whole. A gap is formed between the pin and the locking claw, and the locking claw is displaceable toward the pin side. The displacement directions of the locking claws of the buttonhole bodies inserted into the sub-holes are the same.

Description

Technical Field

[0001] This invention relates to a fastening structure comprising multiple snap fasteners. Background Technology

[0002] Patent Document 1 discloses a fastening structure for mounting a sensor trim on a bracket used to mount a sensor body to a vehicle body. The sensor trim is mounted on the bracket via multiple clips. On the back of the sensor trim, multiple slot-shaped receiving portions are provided to accommodate the shaft portions of the multiple clips. Each receiving portion is larger than the shaft portion of the corresponding clip, allowing the shaft portion to move within the receiving portion. Thus, even if there are manufacturing errors in any of the sensor trim, the bracket, or the clips, the sensor trim can still be attached to the bracket.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: JP Patent No. 6686082. Summary of the Invention

[0006] The problem the invention aims to solve

[0007] However, in the configuration of Patent Document 1, since the shaft of each buckle can be displaced within the corresponding receiving portion, there is a problem that the position of the sensor decorative piece changes relative to the bracket.

[0008] In view of the above background, the problem to be solved by the present invention is to improve stability while allowing manufacturing errors in the fastening structure.

[0009] means for solving problems

[0010] To solve the above problems, one form of the present invention is a fastening structure (1) comprising: a panel (3) having a reference hole (7A) and at least one secondary hole (7B); a bracket (4); a plurality of snap fasteners (1) respectively combined with the reference hole and the secondary hole; each snap fastener having a grommet body (15) and a pin (16), the grommet body having: a main body portion (22) having a receiving hole (21); a pair of locking claws (24) extending around the receiving hole of the main body portion along the axis (A) of the receiving hole; the pin (16) having a shaft portion (31) inserted into the receiving hole, each of the main bodies being integrally formed with the bracket, a gap being formed between the pin and the locking claws, the locking claws being displaceable toward the pin side, and the locking claws of the grommets inserted into the secondary holes being displaceable in the same direction.

[0011] According to this design, stability can be improved in the fastening structure while allowing for manufacturing errors. Since the locking claws of the snap fasteners inserted into each secondary hole can displace in the same direction, manufacturing errors are allowed in the displacement direction of each locking claw. Because the locking claws of each snap fastener abut against the edge of the corresponding secondary hole, the stability of the fastening structure is improved.

[0012] In the above-described form, each of the pins can move relative to the corresponding buttonhole body between a temporary fixed position and a fastened position. When the pin is in the temporary fixed position, a gap is formed between the pin and the locking pawl, and the locking pawl can be displaced toward the pin. When the pin is in the fastened position, each of the locking pawls abuts against the shaft portion, thereby restricting the displacement toward the shaft portion.

[0013] According to this design, by moving each pin from a temporary fixed position to a fixed position, each snap-fit ​​can maintain a tight fit with the reference hole and the secondary hole.

[0014] In the above-described form, each of the locking claws may have: a first piece (24A) extending parallel to the axis of the main body and the receiving hole; a claw (24B) protruding from the front end of the first piece toward the side opposite to the receiving hole; the shaft portion has: a large-diameter portion (31A) provided at the base end side; and a small-diameter portion (31B) provided at the front end side and having a smaller diameter than the large-diameter portion; when the pin is in the temporary fixed position, each of the first pieces faces the small-diameter portion with a gap, and when the pin is in the fastened position, each of the first pieces abuts against the large-diameter portion, thereby restricting displacement toward the shaft portion.

[0015] According to this design, the first piece can be displaced when the pin is in a temporarily fixed position, and the displacement of the first piece is restricted when the pin is in a fastened position.

[0016] In the above-described form, each of the buttonholes may have a pair of support pieces (25) extending from the main body in the same direction as the pair of locking claws. Each support piece has: a second piece (25A) extending parallel to the axis of the main body and the receiving hole, and a pair of post portions (25C); a pair of connecting portions (25D) connecting the second piece and the pair of post portions; the distance from the front end of the post portion of the buckle inserted into the secondary hole to the connecting portion is greater than the distance from the front end of the post portion of the buckle inserted into the reference hole to the connecting portion.

[0017] According to this design, the rigidity of the post portion of the snap fastener inserted into the reference hole is higher than that of the post portion of the snap fastener inserted into the secondary hole. Therefore, the snap fastener is less likely to deviate from the reference hole, and the bracket is positioned appropriately relative to the panel. Furthermore, since the post portion of the snap fastener inserted into the secondary hole is easily deformable, the snap fastener can deform to accommodate manufacturing errors and protrude into the secondary hole.

[0018] In the above-described form, the connecting portion of the buckle, which is inserted into the reference hole, may also protrude into the reference hole.

[0019] This design improves the rigidity of the post portion of the snap fastener inserted into the reference hole.

[0020] In the above-described form, the reference hole and the secondary hole may also be formed as quadrilaterals, with the four posts of the buckle disposed at the four corners of the reference hole or the secondary hole.

[0021] Based on this design, the position and orientation of the latch are appropriately determined relative to the reference hole.

[0022] In the above form, a pair of locking claws may abut against the first opposing sides (11) of the reference hole or the secondary hole, and a pair of support plates may be opposite to the second opposing sides (12) of the reference hole or the secondary hole.

[0023] Based on this form, the orientation of the buckle relative to the reference hole or the secondary hole is determined.

[0024] In the above-described form, the length of the first side portion of each of the secondary holes may also be longer than the length of the first side portion of the reference hole.

[0025] According to this design, the snap fastener inserted into the secondary hole can move along the direction of the second side. Therefore, manufacturing errors along the direction of the second side are permissible.

[0026] In the above-described form, an inner hole (37) may also be formed inside the shaft portion.

[0027] According to this design, since the shaft is prone to elastic deformation, the operator can easily press the shaft from the temporary fixed position into the fastened position.

[0028] In the above-described form, the bracket may support the radar, and the panel may be a vehicle body panel.

[0029] Based on this design, the fastening structure allows the radar to be mounted on the vehicle body panel.

[0030] Another form of the invention is a fastening structure (100) comprising: a panel (3) having a reference hole (7A) and at least one secondary hole (7B); a bracket (4); a plurality of snap fasteners (101) respectively engaging with the reference hole and the secondary hole; each snap fastener having a buttonhole body (103) and a pin (104), the buttonhole body having: a main body portion (112) having a receiving hole (111); a pair of locking claws (114) extending around the receiving hole of the main body portion along the axis of the receiving hole; the pin having a shaft portion inserted into the receiving hole, each pin being integrally formed with the bracket, a gap being formed between the pin and the locking claws, the locking claws being displaceable toward the pin side, and the locking claws of the buttonhole body inserted into each of the secondary holes being displaceable in the same direction.

[0031] According to this design, in the fastening structure where the pin is attached to the bracket, stability is improved while allowing for manufacturing errors. Since the locking claws of the snap fasteners inserted into each secondary hole can displace in the same direction, manufacturing errors are allowed in the displacement direction of each locking claw. Because the locking claws of each snap fastener abut against the edge of the corresponding secondary hole, the stability of the fastening structure is improved.

[0032] The effects of the invention

[0033] Based on the above configuration, the stability of the fastening structure can be improved while allowing for manufacturing errors. Attached Figure Description

[0034] Figure 1 This is an exploded perspective view of the fastening structure of the first embodiment.

[0035] Figure 2 This is the main view that shows a portion of the panel.

[0036] Figure 3 It is a three-dimensional view showing the buckle in a temporary fixed state.

[0037] Figure 4 It is a three-dimensional diagram of a buttonhole.

[0038] Figure 5 It is a 3D diagram of the pin.

[0039] Figure 6 This is a cross-sectional view of the buckle in its temporary fixed state as observed from the Y direction.

[0040] Figure 7 This is a cross-sectional view of the buckle in its temporary fixed state as seen from the X direction.

[0041] Figure 8 yes Figure 7Sectional view of VIII-VIII.

[0042] Figure 9 yes Figure 7 IX-IX sectional view.

[0043] Figure 10 This is a cross-sectional view of the fastened buckle as seen from the Y direction.

[0044] Figure 11 This is a cross-sectional view of the fastened buckle as seen from the X direction.

[0045] Figure 12 yes Figure 11 Sectional view XII-XII.

[0046] Figure 13 This is a cross-sectional view of the latch in its released state as seen from the X direction.

[0047] Figure 14 yes Figure 13 Sectional view of XIV-XIV.

[0048] Figure 15 yes Figure 13 XV-XV sectional view.

[0049] Figure 16 This is a side view of the support piece of the buckle inserted into the reference hole, viewed from the Y direction.

[0050] Figure 17 This is a side view of the support piece of the buckle inserted into the secondary hole, viewed from the Y direction.

[0051] Figure 18 This is a cross-sectional view of the buckle in its temporary fixed state, as viewed from the Y direction and inserted into the secondary hole.

[0052] Figure 19 This is a side view of the support piece of the buckle inserted into the secondary hole, viewed from the Y direction.

[0053] Figure 20 This is an exploded perspective view of the fastening structure of the second embodiment.

[0054] Figure 21 It is a three-dimensional diagram of a buttonhole.

[0055] Figure 22 This is a cross-sectional view of the buttonhole body.

[0056] Figure 23 This is a cross-sectional view of the buckle inserted into the secondary hole, viewed from the Y direction.

[0057] Figure 24 This is a cross-sectional view taken from the Y direction, showing the buckles inserted into the main hole and the secondary hole.

[0058] Figure 25 This is a cross-sectional view of the buckle inserted into the secondary hole, viewed from the Y direction. Detailed Implementation

[0059] (First Implementation)

[0060] The following description pertains to a first embodiment of the latch 1 and the fastening structure 2 having the latch 1. Figure 1 As shown, the fastening structure 2 has a plate-shaped panel 3, a bracket 4, and multiple clips 1 for fastening the bracket 4 to the panel 3. The bracket 4 supports a radar 5, such as a millimeter-wave radar. The bracket 4 can also support other electronic devices, such as sensors, to replace the radar 5. The panel 3 on which the bracket 4 is mounted can be, for example, a car body panel or a reinforcing plate (Stay) attached to a car body panel. In this embodiment, the panel 3 is a reinforcing plate.

[0061] A plurality of connecting holes 7 are formed on the panel 3. Each connecting hole 7 penetrates the panel 3 in the thickness direction. Each connecting hole 7 can be formed at the left and right corners of the front end of the vehicle, the left and right corners of the rear end, etc. The plurality of connecting holes 7 includes one reference hole 7A and at least one secondary hole 7B. In this embodiment, one reference hole 7A and three secondary holes 7B are formed on the panel 3.

[0062] like Figure 2 As shown, the reference hole 7A and the secondary hole 7B are each formed as a quadrilateral. The reference hole 7A and the secondary hole 7B each have a pair of opposing first sides 11 and a pair of opposing second sides 12. The first sides 11 of the reference hole 7A and the secondary hole 7B extend in the same direction. Similarly, the second sides 12 of the reference hole 7A and the secondary hole 7B extend in the same direction. Each of the first sides 11 of the reference hole 7A and the secondary hole 7B can extend in the left-right direction (horizontal direction). Each of the second sides 12 can extend in the up-down direction (vertical direction). The first sides 11 and the second sides 12 are perpendicular to each other. In the reference hole 7A, the lengths of the first sides 11 and the second sides 12 can be equal. That is, the reference hole 7A is formed as a square. In the secondary hole 7B, the length of the first side 11 can be longer than the length of the second side 12. That is, the secondary hole 7B is formed as a rectangle. The reference hole 7A and the three secondary holes 7B can be arranged at the corners of a virtual rectangle.

[0063] like Figure 1 As shown, the bracket 4 is formed into a quadrilateral plate and is arranged parallel to the panel 3. The radar 5 is supported at the central portion 4A of the bracket 4. A support wall or elastic claw for supporting the bracket 4 may be provided at the central portion 4A of the bracket 4.

[0064] The bracket 4 is attached to the panel 3 via multiple snap fasteners 1. In this embodiment, four snap fasteners 1 are provided at the four corners of the bracket 4. Each snap fastener 1 has the same structure except for a portion of the configuration described later. Therefore, the description will focus on one snap fastener 1 and will continue to apply to the description of the other snap fasteners 1.

[0065] like Figure 1 as well as Figure 3 As shown, the buckle 1 has a buttonhole body 15 and a pin 16. The bracket 4 and the plurality of buttonhole bodies 15 can be formed of a resin material with high rigidity. The bracket 4 and the plurality of buttonhole bodies 15 can be formed of fiber-reinforced plastic, for example, polybutylene terephthalate containing glass fibers. The pin 16 can be formed of a resin material with higher flexibility than the bracket 4. The pin 16 can be formed, for example, of polyacetal.

[0066] like Figure 3 , Figure 4 , Figure 6 as well as Figure 7 As shown, the buttonhole body 15 has: a main body 22 with a receiving hole 21; a plurality of locking claws 24 extending from around the receiving hole 21 of the main body 22 along the axis A of the receiving hole 21; and a plurality of support pieces 25. The direction parallel to the axis A is defined as the Z direction. The main body 22 is formed in the shape of a circular plate, having a first surface 22A opposite to the panel 3 and a second surface 22B opposite to the first surface 22A. The axis A of the receiving hole 21 is aligned with the axis A of the main body 22. The receiving hole 21 passes through the main body 22 from the first surface 22A to the second surface 22B. The main body 22 is integrally formed with the bracket 4. The main body 22 can be connected to the bracket 4 at its outer periphery 22D. A cylindrical peripheral wall 26 centered on the axis A is provided on the second surface 22B of the main body 22. The bracket 4 can also be connected to the peripheral wall 26.

[0067] Multiple weight-reducing holes 27 are formed at appropriate locations on the main body 22. These holes 27 extend from the first surface 22A to the second surface 22B. The multiple weight-reducing holes 27 extend circumferentially about axis A, dividing the main body 22 into a central portion 22C and an outer peripheral portion 22D. The central portion 22C and the outer peripheral portion 22D are interconnected by multiple beams 28 provided between adjacent weight-reducing holes 27. Viewed along axis A, the central portion 22C has a square shape.

[0068] A receiving hole 21 is formed in the central portion 22C. In this embodiment, the receiving hole 21 has a square cross-sectional shape. Alternatively, the cross-sectional shape of the receiving hole 21 may also be circular or rectangular. Through the receiving hole 21, the central portion 22C is formed into a cylindrical shape.

[0069] In this embodiment, a pair of locking claws 24 and a pair of support plates 25 are disposed on the first surface 22A of the main body portion 22. The pair of locking claws 24 are opposite to each other in the X direction perpendicular to the axis A, separated by the axis A. The pair of support plates 25 are opposite to each other in the Y direction perpendicular to both the axis A and the X direction, separated by the axis A.

[0070] Each locking claw 24 has: a first plate portion 24A extending from the main body portion 22 parallel to the axis A; and a claw portion 24B protruding from the front end of the first plate portion 24A toward the side opposite to the receiving hole 21. Each first plate portion 24A is formed as a flat plate perpendicular to the X direction. The front end of each first plate portion 24A can be displaced by elastic deformation in the X direction.

[0071] Each support piece 25 has: a second piece 25A extending parallel to axis A from the main body 22; and a locking protrusion 25B protruding from the front end of the second piece 25A toward the receiving hole 21. Additionally, each support piece 25 may have: a pair of pillars 25C extending parallel to axis A from the main body 22; and a pair of connecting portions 25D connecting the second piece 25A to the pair of pillars 25C. In the X direction, the second piece 25A is disposed between the pair of pillars 25C with a pair of slits 25E between them. The pair of connecting portions 25D extend in the X direction and connect the second piece 25A to the corresponding pillar 25C. Furthermore, the connecting portions 25D are connected to the central portion 22C. Each slit 25E is defined by the second piece 25A, the pillars 25C, and the connecting portions 25D. Through the slits 25E, the second piece 25A and the pillars 25C can flex independently.

[0072] The front end of each column portion 25C is further away from the main body portion 22 than the front end of the first piece portion 24A. The front end of the second piece portion 25A is further away from the main body portion 22 than the front end of each column portion 25C. The front end of each second piece portion 25A is inclined towards axis A. A retaining piece 29 extending circumferentially about axis A is provided at the front end of each second piece portion 25A. Each retaining piece 29 is disposed at a position further away from the main body portion 22 than the front end of the first piece portion 24A. In addition, each retaining piece 29 is disposed at a position further away from the main body portion 22 than the front end of each column portion 25C.

[0073] Each retaining piece 29 has: a first portion 29A extending along the X direction from the front end of the second piece 25A; and a second portion 29B extending along the Y direction from one end of the first portion 29A. In a cross-section perpendicular to axis A, the pair of retaining pieces 29 are arranged in a frame shape surrounding the small-diameter portion 31B. The frame shape can be quadrilateral. Each retaining piece 29 can extend from the corresponding second piece 25A in a counterclockwise rotation about axis A. Furthermore, the circumferential (rotation direction) is based on the state viewed from the base end side (main body 22 side) along axis A. Each retaining piece 29 is positioned on the shaft 31 side relative to the base end of the second piece 25A.

[0074] like Figure 5 As shown, pin 16 has a shaft portion 31 that inserts into receiving hole 21. The shaft portion 31, inserted into receiving hole 21, is coaxially configured with axis A. The base end of shaft portion 31 protrudes from second surface 22B, and the front end of shaft portion 31 protrudes from first surface 22A. Shaft portion 31 has: a large-diameter portion 31A provided on the base end side; and a small-diameter portion 31B provided on the front end side, having a smaller diameter than the large-diameter portion 31A. Between the large-diameter portion 31A and the small-diameter portion 31B, a tapered portion 31C is provided, with its diameter gradually increasing from the small-diameter portion 31B towards the large-diameter portion 31A. Small-diameter portion 31B has: a first engaging portion 33 provided on the front end side; and a second engaging portion 34 provided on the large-diameter portion 31A side, compared to the first engaging portion 33.

[0075] The first engaging portion 33 includes a plurality of first recesses 33A arranged circumferentially along the shaft portion 31. In this embodiment, the first engaging portion 33 includes four first recesses 33A. Each first recess 33A is recessed toward the center side of the shaft portion 31 and extends toward the base end side. The depth of each first recess 33A gradually decreases toward the base end side.

[0076] The second engaging portion 34 includes a plurality of second recesses 34A arranged circumferentially along the shaft portion 31. In this embodiment, the second engaging portion 34 includes four second recesses 34A. Each second recess 34A is recessed toward the center side of the shaft portion 31. At the bottom of each second recess 34A, an inclined surface 34B is provided that gradually decreases in depth toward the circumference of the shaft portion 31.

[0077] A circular flange 35 is provided at the base end of the shaft portion 31. The flange 35 is formed to be relatively thin and flexible. Figure 6 as well as Figure 9As shown, an inner hole 37 is formed inside the shaft portion 31. The inner hole 37 extends from the end face of the base end along the axis A towards the front end. The inner hole 37 can also reach the small diameter portion 31B through the large diameter portion 31A and the tapered portion 31C. A tool engaging portion 38 is formed at the opening of the inner hole 37, that is, at the end face of the base end of the shaft portion 31. The tool engaging portion 38 can be configured to engage with tools such as Phillips screwdrivers or flathead screwdrivers.

[0078] like Figure 5 As shown, a first cam 41 is provided on the outer peripheral surface of the base end of the shaft portion 31. In this embodiment, two first cams 41 are arranged at 180-degree intervals with respect to axis A. Each first cam 41 is formed as an inclined surface protruding toward the main body portion 22 in a clockwise direction toward the pin 16. Each first cam 41 may be provided at the boundary between the shaft portion 31 and the flange 35.

[0079] like Figure 6 as well as Figure 9 As shown, a second cam 42 that abuts against the first cam 41 is provided on the main body 22. In this embodiment, four second cams 42 are arranged at 90-degree intervals on the second surface 22B of the main body 22, centered on axis A. Each second cam 42 protrudes from the second surface 22B and extends in a direction perpendicular to axis A.

[0080] Pin 16 is movable relative to buttonhole 15 between a temporary fixed position and a fastened position. For example... Figure 7 As shown, when pin 16 is in the temporary fixed position, each locking protrusion 25B engages with the first engaging portion 33. More specifically, when pin 16 is in the temporary fixed position, each locking protrusion 25B engages with any one of the first recesses 33A of the first engaging portion 33. Figure 11 As shown, when pin 16 is in the fastened position, each locking protrusion 25B engages with the second engaging portion 34. More specifically, when pin 16 is in the fastened position, each locking protrusion 25B engages with any one of the second recesses 34A of the second engaging portion 34. The state in which pin 16 is in a temporarily fixed position is called the temporary fixed state of the latch 1. The state in which pin 16 is in the fastened position is called the fastened state of the latch 1.

[0081] The operation and function of the latches 1 will be explained below. Before installing the bracket 4 onto the panel 3, the operator temporarily fixes each latch 1. The operator temporarily fixes the latch 1 by inserting the shaft portion 31 of the pin 16 from the second surface 22B side into the receiving hole 21 of the eyelet body 15. At this time, the front end of the shaft portion 31 abuts against each locking protrusion 25B, and each second piece 25A elastically deforms outward. When the first engaging portion 33 reaches each locking protrusion 25B, each locking protrusion 25B protrudes into the corresponding first recess 33A, and each second piece 25A returns to its initial state. Thus, the latch 1 is in its initial state.

[0082] like Figure 6 As shown, when pin 16 is in a temporarily fixed position, each of the first pieces 24A is positioned opposite the small-diameter portion 31B with a gap, thereby allowing displacement toward the shaft portion 31. Furthermore, as... Figure 7 as well as Figure 8 As shown, a pair of retaining tabs 29 are configured to surround the front end of the shaft portion 31, maintaining the posture of the shaft portion 31. This prevents the shaft portion 31 from tilting relative to the buttonhole body 15. Figure 6 As shown, the flange 35 is away from the end face of the peripheral wall 26 of the buttonhole body 15. Additionally, as... Figure 9 As shown, when the latch 1 is in a temporarily fixed state, each first cam 41 moves away from the plurality of second cams 42.

[0083] like Figure 6 As shown, the temporarily fixed latch 1 is inserted into the engagement hole 7, which serves as either the reference hole 7A or the secondary hole 7B. At this time, each claw portion 24B of each locking claw 24 is pushed by the edge of the engagement hole 7, and each first piece portion 24A elastically deforms towards the shaft portion 31. Thus, each locking claw 24 can pass through the engagement hole 7. After each claw portion 24B passes through the engagement hole 7, each first piece portion 24A returns to its initial state, and each claw portion 24B is locked at the edge of the engagement hole 7. Thus, the latch 1 is temporarily fixed in the engagement hole 7. With the latch 1 temporarily fixed in the engagement hole 7, the four post portions 25C are arranged at the four corners of the engagement hole 7.

[0084] With the buckle 1 temporarily fixed in the mating hole 7, when the pin 16 is pressed into the fastening position by an operator or machine, as follows: Figures 10-12 As shown, the latch 1 is in a tightened state. At this time, each locking protrusion 25B slides within the first recess 33A, reaching the second recess 34A connected to the first recess 33A. Figure 11As shown, the depth of each first recess 33A decreases towards the base end side. Therefore, when each locking protrusion 25B slides within the opposing first recess 33A, each second piece 25A elastically deforms radially outward towards the shaft portion 31. When each locking protrusion 25B protrudes into the second recess 34A, each second piece 25A returns to its initial state. At the boundary between each first recess 33A and the corresponding second recess 34A, the second recess 34A is formed to be deeper than the first recess 33A. Therefore, each locking protrusion 25B can slide from the first recess 33A into the second recess 34A, but cannot slide from the second recess 34A into the first recess 33A. Thus, the pin 16 is maintained in the fastened position.

[0085] like Figure 10 As shown, when the pin 16 is in the fastened position, each of the first pieces 24A abuts against the large-diameter portion 31A, thereby restricting displacement toward the shaft portion 31. Consequently, each claw portion 24B cannot pass through the engagement hole 7, and the latch 1 remains engaged with the engagement hole 7. When the pin 16 is in the fastened position, the flange 35 is in close contact with the end face of the peripheral wall 26 of the buttonhole body 15, covering the second surface 22B of the main body portion 22.

[0086] The operator inserts the tool into the tool locking part 38, causing the pin 16 to rotate counterclockwise, thereby changing the buckle 1 from a tight state to a temporarily fixed state. For example... Figure 13 as well as Figure 14 As shown, by rotating the pin 16 counterclockwise, each locking protrusion 25B slides circumferentially on the inclined surface 34B of the corresponding second recess 34A, disengaging from the second recess 34A. At this time, as... Figure 15 As shown, the first cam 41 and the second cam 42 slide relative to each other, and the shaft 31 moves in the direction of disengaging from the receiving hole 21. Thus, as... Figure 13 As shown, each locking protrusion 25B slides on the outer surface of the small-diameter portion 31B and moves towards the first recess 33A. Thus, the latch 1 is temporarily fixed. When the latch 1 is in the temporarily fixed state, the operator can pull the latch 1 out of the engagement hole 7. At this time, a pair of locking claws 24 are pushed by the edge of the engagement hole 7 and elastically deformed towards the shaft portion 31, thereby allowing them to pass through the engagement hole 7.

[0087] According to the embodiment, the snap fastener 1 can maintain a proper fastening state regardless of the material. Since the locking pawl 24 can displace towards the shaft portion 31 when the pin 16 is in the temporary fixed position, the locking pawl 24 can pass through the engagement hole 7. When the pin 16 is in the fastened position, since the locking pawl 24 cannot displace towards the shaft portion 31, the locking pawl 24 remains locked in the engagement hole 7. When the pin 16 is in the fastened position, since the locking pawl 24 does not deform, plastic deformation of the locking pawl 24 is suppressed. Therefore, the buttonhole body 15 can be made of a material with relatively high rigidity, such as fiber-reinforced resin. Furthermore, when the pin 16 is in the temporary fixed position, a gap is formed between the shaft portion 31 and the locking pawl 24, but since the locking protrusions 25B of the plurality of support pieces 25 and the retaining pieces 29 surround the shaft portion 31, tilting of the shaft portion 31 relative to the buttonhole body 15 is suppressed.

[0088] Since the retaining piece 29 holds the shaft portion 31 at its front end compared to the first piece 24A, it more effectively suppresses the tilting of the shaft portion 31 relative to the buttonhole body 15. Because the retaining piece 29 is configured to surround the front end of the shaft portion 31, it can limit the tilting of the shaft portion 31 in all directions. Furthermore, since the retaining piece 29 extends in a counter-clockwise rotational manner about axis A, when the latch 1 is released from its fastened state, even if the shaft portion 31 rotates counter-clockwise, the front end of the retaining piece 29 is prevented from engaging with the shaft portion 31. Therefore, the pin 16 can rotate smoothly.

[0089] Because an inner hole 37 is formed inside the shaft portion 31, the shaft portion 31 is easily elastically deformed. As a result, the operator can easily press the shaft portion 31 from the temporary fixed position to the fastened position.

[0090] Next, the relationship between each snap fastener 1 and the reference hole 7A and the three secondary holes 7B will be explained. The pair of locking claws 24 of the snap fastener 1 inserted into each secondary hole 7B engages with the pair of first edges 11 of the secondary hole 7B. That is, the displacement directions of the locking claws 24 of the snap fastener body 15 inserted into each secondary hole 7B are the same. In other words, the X-direction of the snap fastener 1 inserted into each secondary hole 7B is the same. Furthermore, in this embodiment, the pair of locking claws 24 of the snap fastener 1 inserted into the reference hole 7A also engages with the first edge 11 of the reference hole 7A.

[0091] A pair of support pieces 25 of the snap fastener 1 inserted into each of the secondary holes 7B are opposite to a pair of second sides 12 of the secondary hole 7B. That is, the Y direction of the snap fastener 1 inserted into each of the secondary holes 7B is the same. In addition, in this embodiment, the pair of support pieces 25 of the snap fastener 1 inserted into the reference hole 7A are also opposite to the second side 12 of the reference hole 7A.

[0092] Figure 16The support piece 25 of the snap fastener 1 is shown inserted into the reference hole 7A. Figure 17 The support piece 25 of the buckle 1 inserted into the secondary hole 7B is shown. Figure 16 as well as Figure 17 As shown, the distance from the front end of the post portion 25C of the snap fastener 1 inserted into the secondary hole 7B to the connecting portion 25D is greater than the distance from the front end of the post portion 25C of the snap fastener 1 inserted into the reference hole 7A to the connecting portion 25D. That is, the width of the connecting portion 25D of the snap fastener 1 inserted into the secondary hole 7B along the direction of axis A is smaller than the width of the connecting portion 25D of the snap fastener 1 inserted into the reference hole 7A along the direction of axis A. Furthermore, the length of the slit 25E of the snap fastener 1 inserted into the secondary hole 7B is longer than the length of the slit 25E of the snap fastener 1 inserted into the reference hole 7A. Therefore, the post portion 25C of the snap fastener 1 inserted into the secondary hole 7B has higher flexibility than the post portion 25C inserted into the reference hole 7A.

[0093] Due to manufacturing errors, the following situation exists: the distance between the latch 1 inserted into the reference hole 7A and the distance between the latch 1 inserted into the secondary hole 7B, relative to the distance between the reference hole 7A and each secondary hole 7B, deviates in the direction (vertical direction) along the second side 12. In this case, as... Figure 18 as well as Figure 19 As shown, by elastically deforming and tilting the locking claw 24 and the post 25C of the snap fastener 1 inserted into the secondary hole 7B, the locking claw 24 and the post 25C can be inserted into the secondary hole 7B. At this time, since the locking claw 24 and the post 25C abut against the edge of the secondary hole 7B, the snap fastener 1 can be engaged in the secondary hole 7B without wobbling. In this way, since the locking claw 24 of the snap fastener 1 inserted into each secondary hole 7B can be displaced in the same direction, each snap fastener 1 can be made with tolerance in the displacement direction of each locking claw 24. Since the locking claw 24 of each snap fastener 1 abuts against the edge of the corresponding secondary hole 7B, the stability of the fastening structure 2 is improved.

[0094] like Figure 18 As shown, a recess 24C is formed at the front end of the first piece 24A on the side of the shaft 31, which is recessed in the opposite direction to the shaft 31. Since the gap between the first piece 24A and the shaft 31 is increased by the recess 24C, the first piece 24A can be displaced toward the shaft 31 when the pin 16 is in a temporary fixed position.

[0095] The inner hole 37 has the effect of improving the flexibility of the shaft portion 31. Therefore, even if the locking pawl 24 inserted into the secondary hole 7B is tilted, the large diameter portion 31A of the shaft portion 31 deforms towards the center, so that the pin 16 can move from the temporary fixed position to the fastened position.

[0096] The connecting portion 25D of the latch 1, which is inserted into the reference hole 7A, can protrude into the reference hole 7A. This suppresses deformation of the post portion 25C, and the latch 1 is positioned appropriately relative to the reference hole 7A. Furthermore, since the four post portions 25C of the latch 1 inserted into the reference hole 7A are positioned at the four corners of the reference hole 7A, the latch 1 is also positioned appropriately relative to the reference hole 7A.

[0097] The first side 11 of the secondary hole 7B is wider than the width of the latch 1 along the direction of the first side 11. Therefore, the latch 1 can move within the secondary hole 7B in the direction along the first side 11. Due to manufacturing errors, there exists a situation where, relative to the distance between the reference hole 7A and each secondary hole 7B, the distance between the latch 1 inserted into the reference hole 7A and the distance between the latch 1 inserted into the secondary hole 7B deviates in the direction (left-right direction) along the first side 11. In this case, the movement of the latch 1 within the secondary hole 7B in the direction along the first side 11 is permissible due to manufacturing errors.

[0098] (Second Implementation)

[0099] In the fastening structure 100 of the second embodiment, the structure of the snap-fit ​​1 is different from that of the fastening structure 2 of the first embodiment. In the fastening structure 100 of the second embodiment, structures identical to those in the fastening structure 2 of the first embodiment are given the same reference numerals and their descriptions are omitted.

[0100] like Figure 20 As shown, in the fastening structure 100 of the second embodiment, the bracket 4 is attached to the panel 3 via a plurality of snap fasteners 101. In this embodiment, four snap fasteners 101 are provided at the four corners of the bracket 4. Each snap fastener 101 has the same structure. Therefore, one snap fastener 101 will be described, and the description of the other snap fasteners 101 will follow the same approach.

[0101] The snap fastener 101 of the second embodiment has a snap-hole body 103 and pins 104. Each pin 104 is integrally formed with the bracket 4. The bracket 4 and the plurality of pins 104 can be formed of a resin material with high rigidity. The bracket 4 and the plurality of pins 104 can be formed of fiber-reinforced plastic, for example, polybutylene terephthalate containing glass fibers. The snap-hole body 103 can be formed of a resin material with higher flexibility than the bracket 4. The snap-hole body 103 can be formed, for example, of polyacetal.

[0102] like Figure 21 as well as Figure 22As shown, the buttonhole body 103 has: a main body portion 112 having a receiving hole 111; and a pair of locking claws 114 extending from around the receiving hole 111 of the main body portion 112 along the axis A of the receiving hole 111. The direction along the axis A is defined as the Z direction, the direction perpendicular to the Z direction as the X direction, and the direction perpendicular to both the Z and X directions as the Y direction. Each locking claw 114 has: a pair of first pieces 114A extending parallel to the axis A; a connecting portion 114B connecting the front ends of the pair of first pieces 114A; a first claw portion 114C protruding from the connecting portion 114B toward the receiving hole 111; a second piece portion 114D extending from one of the first pieces 114A; and a second claw portion 114E protruding from the second piece portion 114D toward the side opposite to the receiving hole 111. The second piece portion 114D extends toward the main body portion 112 between the pair of first pieces 114A. A pair of locking claws 114 are opposite each other in the X direction, which is perpendicular to axis A. The second claw portion 114E can be displaced in the X direction by elastic deformation of the second piece 114D in the X direction.

[0103] Ribs 114F are provided on the side of each first piece 114A opposite to the receiving hole 111 in the X direction. Each rib 114F protrudes in the X direction and extends along the first piece 114A in the Z direction. The amount of protrusion of each rib 114F in the X direction decreases towards the front end of the first piece 114A. The protruding end of each second claw 114E is positioned outward in the X direction compared to the protruding end of the corresponding rib 114F.

[0104] like Figure 23 As shown, pin 104 has: a shaft portion 117 extending from bracket 4 in the Z direction; and an expanded head 118 provided at the front end of shaft portion 117. Shaft portion 117 is formed as a flat plate having width in the Y direction.

[0105] The buttonhole body 103 is mounted on the pin 104. The shaft portion 117 of the pin 104 is inserted into the receiving hole 111 and held between a pair of locking claws 114. The pin 104 and the buttonhole body 103 are maintained in a coupled state by the pair of first claw portions 114C locking the expanded head 118 of the pin 104.

[0106] Each pin 104 inserted into each secondary hole 7B is configured to be more elastically deformable in the X direction than the pin 104 inserted into the reference hole 7A. For example... Figure 24As shown, the width of the base end portion 117A of the shaft portion 117 inserted into the reference hole 7A in the X direction can be larger than the width of the base end portion 117A of the shaft portion 117 inserted into each of the secondary holes 7B in the X direction. Viewed from the Y direction, the base end portion 117A of the shaft portion 117 inserted into the reference hole 7A contacts the edge of the receiving hole 111. Therefore, the pin 104 inserted into the reference hole 7A cannot be displaced relative to the buttonhole body 103 in the X direction. On the other hand, viewed from the Y direction, a gap is formed between the base end portion 117A of the shaft portion 117 inserted into each of the secondary holes 7B and the edge of the receiving hole 111. Therefore, the pin 104 inserted into the secondary hole 7B can be displaced relative to the buttonhole body 103 in the X direction.

[0107] With the buttonhole body 103 installed on the pin 104, the shaft portion 117 and a pair of locking claws 114 are inserted into the engagement hole 7. At this time, the second claw portion 114E is pushed by the edge of the engagement hole 7, causing the second piece portion 114D to elastically deform in the X direction, and the second claw portion 114E passes through the engagement hole 7. After the second claw portion 114E passes through the engagement hole 7, the second piece portion 114D returns to its original position, and the second claw portion 114E is locked at the edge of the engagement hole 7. Thus, the pin 104 and the buttonhole body 103 are maintained in the engagement hole 7, and the bracket 4 is attached to the panel 3.

[0108] A pair of locking claws 114 of the snap fasteners 101 inserted into each of the secondary holes 7B engage with a pair of first edges 11 of the secondary holes 7B. That is, the displacement directions of the locking claws 114 of the snap fasteners 103 inserted into each of the secondary holes 7B are the same. That is, the X-direction of the snap fasteners 101 inserted into each of the secondary holes 7B is the same. In addition, in this embodiment, a pair of locking claws 114 of the snap fasteners 101 inserted into the reference hole 7A also engage with the first edge 11 of the reference hole 7A.

[0109] like Figure 24 As shown, the position of each buttonhole body 103 is determined relative to the panel 3 by the rib 114F of each buttonhole body 103 abutting against the first edge portion 11 of the reference hole 7A or the secondary hole 7B.

[0110] Due to manufacturing errors, there exists a situation where the distance between the latch 101 inserted into the reference hole 7A and the latch 101 inserted into the secondary hole 7B deviates along the direction (vertical direction) of the second side 12, relative to the distance between the reference hole 7A and the secondary hole 7B. In this case, the shaft portion 117 of the latch 101 inserted into the secondary hole 7B elastically deforms and tilts, allowing the eyelet body 103 to be inserted into the secondary hole 7B. At this time, since the rib 114F of the eyelet body 103 abuts against the first side 11 of the secondary hole 7B, the latch 101 can be engaged in the secondary hole 7B without wobbling. In this way, since the shaft portion 117 of the latch 101 inserted into each secondary hole 7B can be displaced in the X direction, manufacturing errors are allowed in the X direction for each latch 101. Similarly, each latch 101 inserted into the other secondary holes 7B can also be inserted into the secondary holes 7B even with manufacturing errors.

[0111] The first side 11 of the secondary hole 7B is wider than the width of the latch 101 along the direction of the first side 11. Therefore, the latch 101 can move within the secondary hole 7B in the direction along the first side 11. Due to manufacturing errors, there exists a situation where, relative to the distance between the reference hole 7A and each secondary hole 7B, the distance between the latch 101 inserted into the reference hole 7A and the distance between the latch 101 inserted into the secondary hole 7B deviates in the direction (left-right direction) along the first side 11. In this case, the movement of the latch 1 within the secondary hole 7B in the direction along the first side 11 is permissible due to manufacturing errors.

[0112] like Figure 25 As shown, the operator inserts tool 120 between the main body 112 and the panel 3, and uses tool 120 to push the second piece 114D toward the shaft 117, thereby allowing the second claw 114E to disengage from the edge of the engagement hole 7. Thus, the latch 101 can disengage from the engagement hole 7.

[0113] The above describes the specific implementation methods, but the present invention is not limited to the above embodiments and can be implemented in a wide range of variations. For example, the orientation of the panel 3, the position and number of the reference hole 7A and the secondary hole 7B on the panel 3 can be arbitrarily changed. In addition, the position and number of the buckles 1 on the bracket 4 can be arbitrarily changed.

[0114] Explanation of reference numerals in the attached figures

[0115] 1: Buckle 2: Fastening structure

[0116] 3: Panel 4: Bracket

[0117] 7: Connecting Hole 7A: Reference Hole

[0118] 7B: Secondary hole 11: First side

[0119] 12: Second side 15: Buttonhole body

[0120] 16: Pin 21: Receiving hole

[0121] 22: Main body 24: Locking claw

[0122] 24A: First piece 24B: Claw part

[0123] 24C: Recessed portion; 25: Support piece

[0124] 25A: Second piece 25B: Locking protrusion

[0125] 25C: Column part; 25D: Connecting part

[0126] 25E: Slit 29: Holding Plate

[0127] 29A: Part One 29B: Part Two

[0128] 31: Shaft part 31A: Large diameter part

[0129] 31B: Small diameter part; 33: First engaging part

[0130] 33A: First recess; 34: Second engaging portion

[0131] 34A: Second concave portion; 34B: Inclined surface

[0132] 41: First Cam

[0133] 42: Second cam.

Claims

1. A fastening structure, wherein, have: A panel having a reference hole and at least one secondary hole is formed; support; Multiple snap fasteners that are respectively combined with the reference hole and the secondary hole; Each of the aforementioned buckles has a buttonhole body and a pin, wherein the buttonhole body has a main body portion having a receiving hole; A pair of locking claws extend around the receiving hole in the main body along the axis of the receiving hole; the pin has a shaft portion that inserts into the receiving hole. Each of the main body parts is integrally formed with the bracket. A gap is formed between the pin and the locking pawl, allowing the locking pawl to displace towards the pin. The locking claws of the buttonholes inserted into the respective secondary holes are each capable of displacement in the same direction.

2. The fastening structure according to claim 1, wherein, Each of the pins is movable relative to its corresponding buttonhole body between a temporary fixed position and a fastened position. When the pin is in the temporary fixed position, a gap is formed between the pin and the locking pawl, allowing the locking pawl to displace towards the pin. When the pin is in the fastened position, each of the locking claws abuts against the shaft portion, thereby restricting displacement toward the shaft portion.

3. The fastening structure according to claim 2, wherein, Each of the locking claws has: a first piece extending parallel to the axis of the main body and the receiving hole; and a claw portion protruding from the front end of the first piece toward the side opposite to the receiving hole; The shaft portion has: a large-diameter portion provided at the base end side; and a small-diameter portion provided at the front end side and having a smaller diameter than the large-diameter portion; When the pin is in the temporary fixed position, each of the first pieces is opposite the small diameter portion with a gap between them. When the pin is in the fastened position, each of the first pieces abuts against the large-diameter portion, thereby restricting displacement toward the shaft portion.

4. The fastening structure according to claim 3, wherein, Each of the buttonholes has a pair of support tabs extending from the main body in the same direction as the pair of locking claws. Each of the support pieces has: a second piece extending parallel to the axis of the main body and the receiving hole, and a pair of pillars; a pair of connecting portions connecting the second piece to the pair of pillars; The distance from the front end of the post portion of the buckle inserted into the secondary hole to the connecting portion is greater than the distance from the front end of the post portion of the buckle inserted into the reference hole to the connecting portion.

5. The fastening structure according to claim 4, wherein, The connecting portion of the buckle, which is inserted into the reference hole, protrudes into the reference hole.

6. The fastening structure according to claim 5, wherein, The reference hole and the secondary hole are formed into quadrilaterals. The four posts of the buckle are disposed at the four corners of the reference hole or the secondary hole.

7. The fastening structure according to claim 6, wherein, The pair of locking claws abut against the opposing first edges of the reference hole or the secondary hole. The pair of support plates are opposite to the second sides of the reference hole or the secondary hole.

8. The fastening structure according to claim 7, wherein, The length of the first side portion of each of the secondary holes is longer than the length of the first side portion of the reference hole.

9. The fastening structure according to claim 2, wherein, An inner hole is formed inside the shaft portion.

10. The fastening structure according to any one of claims 1 to 9, wherein, The bracket supports the radar. The panel in question is a vehicle body panel.

11. A fastening structure, wherein, have: A panel having a reference hole and at least one secondary hole is formed; support; Multiple snap fasteners that are respectively combined with the reference hole and the secondary hole; Each of the aforementioned buckles has a buttonhole body and a pin, wherein the buttonhole body has a main body portion having a receiving hole; A pair of locking claws extending around the receiving hole of the main body along the axis of the receiving hole; The pin has a shaft portion that inserts into the receiving hole. Each of the pins is integrally formed with the bracket. A gap is formed between the pin and the locking pawl, allowing the locking pawl to displace towards the pin. The locking claws of the buttonholes inserted into the respective secondary holes are each capable of displacement in the same direction.

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