JP2017025989A - Fitting structure of insertion member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure a falling prevention function of an insertion member, and prevent wobbling of the insertion member and deterioration of fitting strength of a fitting body to a fitted body.SOLUTION: At a seat surface part 19, a flexible holding piece part 29 is protrusively provided an integrated manner, the holding piece having a separation regulation part 29c contacting with the outer peripheral edge of a first plate part 11 of an insertion member 7 and configured to regulate movement of the insertion member 7 of an insertion hole 21 to an opening side. The holding piece part 29 allows movement of the first plate part 11 by being pressed and bent toward the outer peripheral edge of the first plate part 11, in a process of inserting a neck part 13 of the insertion member 7 into the insertion hole 21 from the opening side and in a process of separating the neck part from the insertion hole 21 toward the opening side.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a mounting structure in which an insertion member is mounted on a mounting seat formed integrally with a resin mounting body.

  Patent Documents 1 and 2 disclose a mounting structure in which an insertion member is mounted on a mounting seat formed integrally with a resin mounting body. In these attachment structures, the insert member is attached in a state of being inserted into the attachment hole of the attached body, a first plate portion formed on the base end side of the body portion, and the first plate A second plate portion formed integrally with the neck portion through the neck portion, and the mounting seat includes a leg portion integrally projecting from the mounting body, and an insertion hole opened to one side. And a seat surface portion formed integrally with the tip of the leg portion.

  In Patent Document 1, a stopper portion is provided on the inner peripheral surface of the insertion hole of the mounting seat so as to prevent the neck portion of the insertion member from being detached, and the stopper portion prevents the insertion member from falling off the mounting seat. Yes.

  In Patent Document 2, the stopper portion is formed so as to be able to bend outward, and when the insertion member is attached to the attachment seat, the stopper portion is pressed by the neck portion of the insertion member and bent outward.

Japanese Utility Model Publication No. 5-3623 Japanese Utility Model Publication No. 63-62617

  However, in Patent Document 1, when the insertion member is repeatedly attached to and detached from the attachment seat, the stopper portion is scraped by sliding contact with the neck portion of the insertion member, and the insertion member falls off the attachment seat when the attachment body is transported. It may be easy to do.

  Moreover, in the said patent document 2, since a part of seat surface part is formed so that bending is possible, the strength of a seat surface part falls, and there exists a possibility of causing the wobbling of an insertion member and the fall of the attachment strength to the to-be-attached body. There is.

  The present invention has been made in view of the above points, and the object thereof is to secure the function of preventing the insertion member from falling off, and to prevent the insertion member from wobbling and the attachment strength of the attachment body to the attached body. It is to prevent the decrease.

  In order to achieve the above-mentioned object, the present invention is characterized in that a flexible holding piece portion is provided on the seating surface portion to prevent the insertion member from being detached from the mounting seat. To do.

  Specifically, according to the present invention, an insertion member is attached to a mounting seat formed integrally with a resin mounting body, and the insertion member is fixed in a state of being inserted into a mounting hole of a mounted body. A first plate portion formed on the base end side of the main body portion, and a second plate portion formed integrally with the first plate portion via a neck portion, and the mounting seat includes the mounting plate A leg portion integrally projecting on the body, and a seat surface portion formed integrally with the distal end of the leg portion and sandwiched between the first plate portion and the second plate portion of the insertion member, the seat surface portion including at least The following solution was taken for the mounting structure of the insertion member in which the insertion hole opened on one side was formed to penetrate, and the neck of the insertion member was inserted into the insertion hole.

  That is, according to the first aspect of the present invention, in the seating surface portion, the insertion is performed while facing or spaced from the outer peripheral edge of one of the first plate portion and the second plate portion of the insertion member. A flexible holding piece portion having a detachment restricting portion for restricting the movement of the insertion member toward the opening side of the hole is integrally projected, and the holding piece portion has a neck portion of the insertion member at the insertion hole. In the process of inserting from the open side and the process of removing from the insertion hole to the open side, the one plate part is configured to be allowed to move by being pressed and bent by the outer peripheral edge of the one plate part. It is characterized by.

  According to a second aspect of the present invention, in the mounting structure for an insertion member according to the first aspect, the insertion hole is opened to only one side, and the holding piece portion is in contact with or spaced from the outer peripheral edge of the one plate portion. It further has an insertion restricting portion that opens and confronts and restricts the movement of the insertion member to the opposite side of the insertion hole.

  According to a third aspect of the present invention, in the attachment structure for an insertion member according to the first or second aspect, the one plate portion is the first plate portion.

  According to a fourth aspect of the present invention, in the attachment structure for an insertion member according to any one of the first to third aspects, the holding piece extends substantially in the insertion / removal direction, and the one plate portion is defined as the insertion / removal direction. A pair is formed so as to be sandwiched in a direction orthogonal to each other, and guide portions that are gradually separated from each other toward the open side are formed at the open side end portions of the holding piece portions so as to face each other. It is characterized by that.

  According to the first invention, in the process of inserting and removing the insertion member, the holding piece portion is bent and is not easily cut. Therefore, even if insertion / removal of the insertion member is repeated, the drop prevention function is unlikely to deteriorate.

  Further, since the holding piece portion functions to prevent the insertion member from falling off, and it is not necessary to form a bendable stopper portion on the seat surface portion as in Patent Document 2, by increasing the strength of the seat surface portion, It is possible to prevent wobbling and a decrease in mounting strength of the mounting body to the mounted body.

  According to the second aspect of the invention, the insertion member is positioned to some extent in the insertion / removal direction by the detachment restricting portion and the insertion restricting portion, and the position of the insertion member is determined when the main body portion of the insertion member is inserted into the attachment hole of the attached body. Since it is not necessary to make large adjustments in the insertion / removal direction, the attachment work of the attachment body to the attachment body is facilitated.

  Further, since the movement of the insertion member in the insertion / removal direction is restricted with the attachment body attached to the attachment body, the attachment state is stabilized.

  According to the third aspect of the invention, the holding piece is provided on the leg base end side of the seat surface portion and is easily visible when the insertion member is inserted / removed, so that the insertion / removal operation of the insertion member to / from the mounting seat is facilitated.

  According to the fourth aspect of the invention, since the distance between the two guide portions is gradually increased toward the open side, the one plate portion can be easily inserted between the two holding pieces.

It is a perspective view which shows the attachment seat periphery before the insertion member attachment of the attachment body to which the attachment structure which concerns on Embodiment 1 of this invention is applied. It is a top view of a mounting seat. FIG. 3 is a view corresponding to line III-III in FIG. 2. FIG. 3 is a view corresponding to FIG. 2 and illustrating a mounting state in which an insertion member is mounted on a mounting seat. FIG. 5 is a view corresponding to the line VV in FIG. 4. FIG. 3 is a diagram corresponding to FIG. FIG. 3 is a diagram corresponding to FIG. 2 of the second embodiment. FIG. 8 is a view corresponding to the line VIII-VIII in FIG. 7. FIG. 5 is a diagram corresponding to FIG. 4 of the second embodiment. FIG. 10 is a view corresponding to line XX in FIG. 9.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
1 to 5, reference numeral 1 denotes an attachment body made of resin such as a pillar trim, a side trim, a side sill protector of an automobile, and the attachment body 5 is integrally formed on the attachment body 1. The attachment member 7 is attached by applying the attachment structure according to the first embodiment of the present invention.

  The insertion member 7 is a washer-integrated bolt having a threaded main body 9. As shown in FIG. 5, the main body 9 is inserted into a mounting hole 4 formed in a metal mounting body 3 such as an inner panel or a side sill of an automobile, and a nut (not shown) is screwed to the tip side thereof. This is fixed to the attached body 3. A circular first plate portion 11 as a washer is formed on the base end side of the main body portion 9 so as to protrude. A sheet-like seal member 12 is integrally attached to the surface of the first plate portion 11 on the main body portion 9 side so as to be in close contact with the attached body 3.

  A columnar neck portion 13 is integrally formed on the side opposite to the main body portion 9 of the first plate portion 11, and a rectangular plate-like second plate portion is formed on the side of the neck portion 13 opposite to the first plate portion 11. 15 is integrally formed so as to project substantially parallel to the first plate portion 11. As a result, a second plate portion 15 is integrally formed on the first plate portion 11 via the neck portion 13.

  The mounting seat 5 includes a rectangular ring-shaped leg portion 17 projecting integrally with the mounting body 1 so that a space portion S1 is formed inside. The leg portion 17 has a pair of plate-like side wall portions 17a each having a substantially isosceles trapezoidal shape whose front end side is narrower than the base end side, and one end edge of the side wall portions 17a except for the front end portion. A plate-like open-side connecting wall portion 17b that is connected over the entire protruding direction and a plate-like anti-open-side connecting wall portion 17c that connects the other edge of the side wall portion 17a over the entire protruding direction. Has been. A first recess 17d having a substantially U-shape in a plan view is formed at the distal end edge of each of the side wall portions 17a.

  A substantially rectangular plate-shaped seating surface portion 19 is integrally formed at the distal end of the leg portion 17 so as to cover the space S1 from the distal end side of the leg portion 17. The space S1 is open in the anti-projection direction of the leg 17. An insertion hole 21 having a U-shape in a plan view that opens to one side of the open side connecting wall 17b is formed in the seating surface portion 19 in the thickness direction of the side wall portion 17a. Hereinafter, the opposing direction of the open-side connecting wall portion 17b and the anti-open-side connecting wall portion 17c is set in the insertion / removal direction X, along the plate surface of the seating surface portion 19, and in the direction orthogonal to the insertion / removal direction X (side wall portion 17a). The facing direction) is referred to as the width direction Y. The open side of the insertion hole 21 is called an open side, and the anti-open side of the insertion hole 21 is called an anti-open side. The neck portion 13 of the insertion member 7 is inserted in the vicinity of the end portion on the opposite side of the insertion hole 21. Further, the first plate portion 11 and the second plate portion 15 of the insertion member 7 sandwich the periphery of the insertion hole 21 of the seat surface portion 19.

  Inclined surfaces 23 are formed on both open end surfaces of the seat surface portion 19 so that the plate thickness gradually decreases toward the open side. In addition, the pair of guide surfaces 24 facing in the width direction Y are inclined at the locations corresponding to the inclined surface 23 on the inner peripheral surface of the insertion hole 21 so as to gradually separate from each other toward the open side of the insertion hole 21. Is formed.

  Both end edges (end edges on both sides in the width direction Y) extending along the insertion / removal direction X of the seat surface portion 19 are substantially U-shaped in a plan view recessed inward in a region excluding both ends of the insertion / removal direction X. The second recess 25 is formed so as to constitute a through hole 27 continuous with the first recess 17d of the side wall portion 17a. Further, an insertion hole 28 is formed between the open side edge of the seat surface part 19 and the open end connecting wall part 17 b of the leg part 17.

  A pair of long flexible holding pieces 29 extending substantially in the insertion / removal direction X are integrally formed on the surface of the seat surface 19 on the side opposite to the space S1 so as to face each other in the width direction Y. These holding piece portions 29 are provided so as to bridge the bearing surface portions 19 on both sides in the insertion / removal direction X of the second recess 25 (through hole 27). The protruding heights of the holding piece portions 29 are set to be equal to or less than the thickness of the first plate portion 11 of the insertion member 7, and the holding piece portions 29 sandwich the first plate portion 11 in the width direction Y. Each holding piece 29 has an inner curved portion 29a that is curved so as to be recessed outward in the width direction Y, and extends in both sides of the inner curved portion 29a in the insertion / removal direction X, and extends in the width direction Y toward the outer side of the insertion / removal direction X. The outer curved portion 29b is curved outward. The boundary between the inner curved portion 29a and the open-side outer curved portion 29b on the opposing surface (the inner surface in the width direction Y) of both holding piece portions 29 is formed on the outer peripheral edge of the first plate portion 11 in the width direction Y outer side. By making pressure contact (contact) from the obliquely open side, the movement of the insertion member 7 to the open side (withdrawal direction) is restricted, and the release restricting portion 29c is configured. On the other hand, the boundary between the inner curved portion 29 a and the oppositely curved outer curved portion 29 b on the opposing surface (the inner surface in the width direction Y) of both holding piece portions 29 is formed in the width direction Y on the outer peripheral edge of the first plate portion 11. By pressing (contacting) from the outer diagonally opposite opening side, the movement of the insertion member 7 to the opposite opening side (inserting direction) is restricted to constitute the insertion restricting portion 29c ′. Thus, since the movement of the insertion member 7 in the insertion / removal direction X is restricted in a state where the attachment body 1 is attached to the attachment body 3, the attachment state is stabilized. In addition, the opposing surfaces (surfaces on the inner side in the width direction Y) of the outer curved portions 29b on the open side constitute guide portions 29d that gradually separate from each other toward the open side.

  Further, on both sides in the width direction Y of the insertion hole 21 of the seat surface portion 19, a pair of opposing wall portions 31 extending in parallel with each other along the insertion / removal direction X at the center portion of the insertion / removal direction X are integrally formed on the space portion S1 side. Projected. These opposing wall portions 31 regulate the rotation of the insertion member 7 by sandwiching the second plate portion 15 of the insertion member 7 from both sides in the width direction Y. In addition, a pair of guide wall portions 33 that are continuous with the opening side of the facing wall portion 31 and that are curved so as to be gradually separated from each other toward the opening side are integrally formed on the seat portion 19 on the space portion S1 side. Projected.

  In order to attach the insertion member 7 configured as described above to the attachment seat 5, the second plate portion 15 of the insertion member 7 is inserted into the insertion hole 28 of the attachment seat 5 from the open side, and is parallel to the seat surface portion 19. Slide to the open side. Thus, the first plate portion 11 is bent by pressing and holding the holding piece portion 29 outward in the width direction Y (outside of the first plate portion 11) while the outer peripheral edge of the first plate portion 11 is in sliding contact with the guide portion 29d. 11 is allowed to move to the opposite side. At this time, since the distance between the two guide portions 29d gradually increases toward the open side, it is easy to insert the first plate portion 11 between the two guide portions 29d, that is, between the two holding piece portions 29. Further, since the holding piece portion 29 is provided on the side of the seat surface portion 19 opposite to the space portion S1 (the base end side of the leg portion 17) and is easily visible, the insertion / removal operation of the insertion member 7 to / from the mounting seat 5 is easy.

  Furthermore, in this process, the second plate portion 15 is guided by the guide wall portion 33 so that both edges in the width direction Y of the second plate portion 15 provided in the rectangular shape face the opposite wall portions 31 in parallel. The entire insertion member 7 rotates and reaches the position where the second plate portion 15 is sandwiched from both sides in the width direction Y by the opposing wall portions 31. At this time, since the guide wall portions 33 are gradually separated from each other toward the open side, it is easy to insert the second plate portion 15 between the guide wall portions 33.

  In addition, a guide portion 29d is formed at the open side end portion of the opposing surface of each holding piece portion 29, and the distance between the both guide portions 29d gradually increases toward the open side. Insertion between the holding piece portions 29 is easy. When the center portion in the insertion / removal direction X of the first plate portion 11 gets over the separation regulating portion 29c of the holding piece portion 29, the first plate portion 11 gradually reduces the bending of the holding piece portion 29, while the separation regulating portion. It is guided to a position surrounded by four sides by 29c and the insertion restricting portion 29c ′. In this state, the holding piece 29 is slightly bent outward in the width direction Y from the original shape.

  Further, the neck portion 13 is inserted into the insertion hole 21 from the open side and guided to the vicinity of the opposite end portion of the insertion hole 21, and the first plate portion 11 and the second plate portion 15 surround the insertion hole 21 around the seat surface portion 19. Is pinched. At this time, since the interval between the guide surfaces 24 of the insertion holes 21 is gradually increased toward the opening side of the insertion holes 21, the neck 13 can be easily inserted into the insertion holes 21. Further, since the plate thickness of the seat surface portion 19 gradually decreases toward the open side at the open end of the insertion hole 21, the seat surface portion 19 is between the first plate portion 11 and the second plate portion 15. Is easily inserted.

  Next, by inserting the main body portion 9 of the insertion member 7 attached to the attachment body 1 as described above into the attachment hole 4 of the attachment body 3 and screwing a nut (not shown) to the distal end side of the main body portion 9. The mounting body 1 is mounted on the mounted body 3. At this time, the insertion member 7 is positioned in the insertion / removal direction X by the separation restriction portion 29c and the insertion restriction portion 29c ′ of the holding piece portion 29, and the position of the insertion member 7 does not have to be adjusted in the insertion / removal direction X. Installation work is easy.

  Moreover, when removing the attachment body 1 attached as mentioned above from the to-be-attached body 3, the attachment body 1 is pushed to an anti-open side (Z direction in FIG. 4). Even if this pushing force acts on the attachment body 1, the insertion member 7 does not move while being inserted into the attachment hole 4 of the attachment body 3, and the attachment seat 5 of the attachment body 1 moves to the anti-open side. That is, the insertion member 7 moves relatively to the open side with respect to the mounting seat 5. At this time, the outer peripheral edge of the first plate portion 11 of the insertion member 7 presses the separation restricting portion 29c outward in the width direction Y (the outer periphery side of the first plate portion 11) to bend the holding piece portion 29 outward in the width direction Y. Thereby, the movement to the open side of the 1st board part 11 is accept | permitted. Then, the central portion of the first plate portion 11 in the insertion / removal direction X gets over the separation restricting portion 29c of the holding piece portion 29, slidably contacts the guide portion 29d, and gradually reduces the bending of the holding piece portion 29. 29 leaves the open side. Thereby, the holding piece part 29 is released from the pressing force of the first plate part 11 and returns to the original shape.

  Therefore, according to the first embodiment, even when the first plate portion 11 passes between the holding piece portions 29 in the process of inserting / removing the insertion member 7, the holding piece portion 29 is bent toward the outer peripheral side and is not easily cut. Therefore, even if insertion / removal of the insertion member 7 is repeated, the drop prevention function is unlikely to deteriorate.

  Further, since the holding piece portion 29 functions to prevent the insertion member 7 from falling off, and it is not necessary to form a bendable stopper portion on the seat surface portion 19 as in Patent Document 2, the strength of the seat surface portion 19 is increased. In addition, the wobbling of the insertion member 7 and the decrease in the mounting strength of the mounting body 1 to the mounted body 3 can be prevented.

  Moreover, since the holding piece 29 is formed so as to bridge the seating surface portions 19 on both sides in the insertion / removal direction X of the through hole 27, the undercut can be obtained by using the through hole 27 when forming the attachment body 1. Since the holding piece portion 29 can be formed without providing a portion, the holding piece portion 29 can be formed on the mounting seat 5 without using a slide die for avoiding an undercut, and the mold structure of the molding die is simplified.

(Embodiment 2)
FIGS. 6-10 shows the surroundings of the attachment seat 5 of the attachment body 1 of the motor vehicle to which the attachment structure which concerns on Embodiment 2 of this invention was applied. In the second embodiment, the insertion member 7 is a resin clip, and the main body 9 has a shaft portion 9 a and a central portion integrally connected to the tip of the shaft portion 9 a, and both ends approach the first plate portion 11. The flexible plate portion 9b having a substantially V-shaped cross section is inserted and locked in the mounting hole 4 of the mounted body 3. Further, the seal member 12 is not attached to the first plate portion 11, and a tapered plate-like contact that protrudes from the outer peripheral end of the first plate portion 11 toward the main body portion 9 and contacts the attached body 3. The contact piece 11a is integrally formed over the entire circumference. And the peripheral part of the attachment hole 4 of the to-be-attached body 3 is clamped by the said flexible board part 9b and the said contact piece part 11a. Moreover, the diameter of the neck part 13 is set shorter than the length of the width direction Y of the insertion hole 21, and the clearance gap S2 is formed between the neck part 13 and the internal peripheral surface of the insertion hole 21 of the width direction Y both sides. Furthermore, the 2nd board part 15 is formed in circular shape.

  Further, the holding piece portion 29 is provided so as to protrude from the surface of the seat surface portion 19 on the space portion S1 side, and is constituted only by the outer curved portion 29b on the open side. Then, the opposite opening side edges of the opposing surfaces of the holding piece parts 29 are in pressure contact with the outer peripheral end face of the second plate part 15 (the outer peripheral edge of the second plate part 15) from the diagonally open side in the width direction Y. Thus, the movement of the insertion member 7 in the detaching direction is restricted to constitute the detachment restricting part 29c. Further, the facing wall portion 31 and the guide wall portion 33 are not formed on the seat surface portion 19.

  Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.

  Therefore, according to the second embodiment, since the holding piece portion 29 does not have to be provided on the side opposite to the space portion S1 of the seat surface portion 19, the degree of freedom in setting the shape of the first plate portion 11 of the insertion member 7 is improved.

  Further, the diameter of the neck portion 13 is set to be shorter than the width in the width direction Y of the insertion hole 21, and the neck portion 13 can move in the width direction Y within the insertion hole 21. Even if an error in the width direction Y occurs at the position 4, the body portion 9 of the insertion member 7 can be easily inserted into the mounting hole 4 of the mounted body 3.

  Further, since both holding piece portions 29 are not in contact with the second plate portion 15 from the side opposite to the open side and the movement of the insertion member 7 in the insertion direction is not restricted, the insertion hole 21 and the attachment hole 4 of the mounted body 3 are not. Even if there is an error in the insertion / removal direction X at this position, the body portion 9 of the insertion member 7 can be easily inserted into the attachment hole 4 of the attachment body 3.

  In the first and second embodiments, a pair of holding piece portions 29 are provided, but only one of the holding piece portions 29 may be provided.

  In the first embodiment, the holding piece 29 is pressed against the outer peripheral edge of the first plate portion 11 in a state where the holding piece 29 is bent slightly outward in the width direction Y from the original shape. The original shape may be completely restored, and the detachment restricting portion 29c and the insertion restricting portion 29c ′ may be brought into contact with or spaced from the outer peripheral edge of the first plate portion 11.

  Similarly, in the second embodiment, the holding piece 29 is pressed against the outer peripheral edge of the second plate portion 15 in a state where the holding piece 29 is bent slightly outward in the width direction Y from the original shape. May completely return to the original shape, and the detachment restricting portion 29c may be in contact with or opposed to the outer peripheral edge of the second plate portion 15.

  In the second embodiment, the insertion restricting portion 29c ′ is not provided in the holding piece 29, but the insertion restricting portion 29c ′ may be provided.

  Moreover, in the said Embodiment 1, 2, although the penetration hole 21 was open | released only to one by the side of the open | release side connection wall part 17b, you may open | release to the anti-opening side connection wall part 17c side further. That is, the insertion hole 21 only needs to be open to at least one side.

  The present invention is useful as a mounting structure in which an insertion member is mounted on a mounting seat formed integrally with a resin mounting body.

1 Mounting body
3 Mounted object
4 Mounting hole
5 Mounting seat
7 Insertion member
9 Body
11 First plate part
13 neck
15 Second plate part
17 Leg
19 Seat surface
21 Insertion hole
29 Holding piece
29c Detachment restricting portion 29c 'Insertion restricting portion 29d Guide portion

Claims (4)

The insertion member (7) is attached to the mounting seat (5) formed integrally with the resin mounting body (1),
The insertion member (7) is formed on the base end side of the main body (9) and the main body (9) to be fixed in a state of being inserted into the mounting hole (4) of the mounted body (3). A first plate portion (11), and a second plate portion (15) integrally formed on the first plate portion (11) via a neck portion (13),
The mounting seat (5) is formed integrally with a leg portion (17) projecting integrally with the mounting body (1) and a tip of the leg portion (17), and is a first part of the insertion member (7). A seat surface portion (19) sandwiched between the plate portion (11) and the second plate portion (15), and an insertion hole (21) that opens to at least one of the seat surface portion (19) is formed therethrough. An insertion member mounting structure in which the neck (13) of the insertion member (7) is inserted into the hole (21),
The seat surface portion (19) is in contact with the outer peripheral edge of one of the first plate portion (11) and the second plate portion (15) of the insertion member (7) or the second plate portion (15). A flexible holding piece (29) having a detachment restricting portion (29c) that constrains at an interval and restricts the movement of the insertion member (7) to the open side of the insertion hole (21) is integrated. Protruding,
The holding piece part (29) is a process of inserting the neck part (13) of the insertion member (7) into the insertion hole (21) from its open side and a process of removing it from the insertion hole (21) to its open side. The insertion is characterized in that the one plate portion (11, 15) is configured to be allowed to move by being pressed and bent by the outer peripheral edge of the one plate portion (11, 15). Member mounting structure. In the mounting structure of the insertion member according to claim 1,
The insertion hole (21) opens only to one side,
The holding piece portion (29) is in contact with or spaced from the outer peripheral edge of the one plate portion (11, 15) and is inserted into the insertion member (7 on the opposite side of the insertion hole (21) (7). ) Further includes an insertion restricting portion (29c ′) for restricting the movement of the insertion member. In the attachment structure of the insertion member according to claim 1 or claim 2,
The mounting structure for an insertion member, wherein the one plate portion (11, 15) is the first plate portion (11). In the attachment structure of the insertion member according to any one of claims 1 to 3,
The holding piece portions (29) are formed in a pair of elongated shapes so as to extend substantially in the insertion / removal direction and sandwich the one plate portion (11, 15) in a direction orthogonal to the insertion / removal direction. A mounting structure for an insertion member, characterized in that guide portions (29d) that are gradually separated from each other toward the open side are formed at the open end of the holding piece (29) so as to face each other.

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