JP6835482B2 - Fastener - Google Patents

Description

The present invention relates to a fastener attached to a mounting hole of a member to be mounted.

Patent Document 1 discloses a hole plug that closes a hole provided in a plate material such as a vehicle body panel. This hole plug has a disk-shaped head, a leg portion protruding downward from the head portion, and a flange portion protruding from the upper periphery of the leg portion. The legs have a tubular inner wall and a tubular outer wall folded back from the inner wall.

Japanese Unexamined Patent Publication No. 2012-72896

In the technique disclosed in Patent Document 1, when the hole plug is attached to the hole of the plate material, the outer wall and the inner wall bend inward in the radial direction, so that the insertability is ensured, but the outer wall and the inner wall are formed after the attachment is completed. There is a risk of bending and creating a gap between the hole plug and the plate material.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a fastener which can be inserted into a mounting hole and which suppresses deformation after mounting.

In order to solve the above problems, the fastener of a certain aspect of the present invention is a fastener for fastening to a mounting hole formed in a member to be mounted, and is a first portion in which a base portion and one end thereof are connected to the base portion. The annular wall portion, the second annular wall portion provided outside the first annular wall portion facing the first annular wall portion, the other end of the first annular wall portion, and the other end of the second annular wall portion, respectively. It is provided with an annular connecting portion to be connected, a flange portion protruding outward from one end of the second annular wall portion, and a plurality of ribs provided in a groove between the first annular wall portion and the second annular wall portion. .. The second annular wall portion has a locking portion that locks to the edge of the mounting hole. The ribs are the first rib formed in the connecting portion from the other end of the first annular wall portion to the other end of the second annular wall portion, and the groove-side surface of the second annular wall portion connected to the first rib. It has a second rib formed in. A gap is formed between the second rib and the first annular wall.

According to the present invention, it is possible to provide a fastener that is insertable into a mounting hole and suppresses deformation after mounting.

It is a perspective view of the fastener of an Example. It is sectional drawing of the line segment AA of the fastener shown in FIG. 1 (a). It is a figure for demonstrating the attachment operation of the fastener to the attachment hole. It is a figure which shows the attachment operation of the fastener to the attachment hole, and shows the continuation of the attachment operation of the fastener shown in FIG. It is a figure for demonstrating the fastener of the modification.

FIG. 1 is a perspective view of the fastener 10 of the embodiment. FIG. 1A is a fastener 10 viewed from the front side, and FIG. 1B is a fastener 10 viewed from the back side. 2 is a cross-sectional view of the line segment AA of the fastener 10 shown in FIG. 1A.

The fastener 10 is attached to the attachment hole of the member to be attached. The mounted member is, for example, a vehicle body panel and has a mounting hole. The mounting holes are formed in the shape of elongated holes, and are formed in the vehicle body panel for passing jigs for mounting parts and for painting. The fastener 10 is made of a resin material and closes the mounting holes to prevent muddy water and the like from entering the interior from the outside of the vehicle body panel.

The fastener 10 includes a base 20, a first annular wall 22, a connecting 23, a second annular wall 24, a flange 26, ribs 28, and a locking portion 30. The fastener 10 of the embodiment does not use a separate sealing material and can be manufactured at low cost.

The base portion 20 has a plate shape and is formed in an elongated hole shape according to the shape of the mounting hole. The outer circumference of the base portion 20 has a linear long side portion 20a and an arc-shaped portion 20b.

The first annular wall portion 22 is formed so as to bend and hang down from the peripheral edge of the base portion 20. One end 22a of the first annular wall portion 22 is connected to the base portion 20, and the other end 22b is connected to the connecting portion 23. One end 22a side of the first annular wall portion 22 is located on the front side of the fastener 10.

The second annular wall portion 24 is provided outside the first annular wall portion 22 so as to face the first annular wall portion 22, and is formed so as to be bent and erected from the connecting portion 23. The second annular wall portion 24 is thinner than the first annular wall portion 22 and more easily bent than the first annular wall portion 22. One end 24a of the second annular wall portion 24 is connected to the flange portion 26, and the other end 24b is connected to the connecting portion 23. The first annular wall portion 22 and the second annular wall portion 24 have a long side portion and an arc-shaped portion, like the base portion 20.

On the outer surface of the second annular wall portion 24 (the outer surface of the groove described later), a locking portion 30 that locks to the back edge of the mounting hole is formed in a stepped manner. The locking portion 30 is formed in an annular shape on the outer surface of the second annular wall portion 24. As shown in FIG. 1 (b), the locking portion 30 is formed by being partially cut out by a plurality of cutout portions 32. The plurality of notches 32 are formed on the outer surface side corresponding to the position where the rib 28 is provided. By providing the rib 28, it is possible to prevent the second annular wall portion 24 from becoming excessively difficult to bend by the notch portion 32.

The connecting portion 23 is formed in an annular shape by connecting the other end 22b of the first annular wall portion 22 and the other end 24b of the second annular wall portion 24, respectively. A groove is formed on the outer periphery of the base 20 by the first annular wall portion 22, the connecting portion 23, and the second annular wall portion 24. The flange portion 26 extends from one end 24a of the second annular wall portion 24 and is formed in an umbrella shape. The flange portion 26 is in close contact with the surface of the member to be attached.

By the way, in the mounting completed state, it is preferable that the fastener 10 is uniformly adhered to the entire circumference of the mounting hole. The fastener 10 has a straight long side portion, and the long side portion may be loosened to reduce the adhesiveness. Therefore, in the fastener 10 of the embodiment, the rib 28 can be provided at least in the groove of the long side portion to suppress the slack of the long side portion.

The rib 28 is provided so as to project into the groove between the first annular wall portion 22 and the second annular wall portion 24, and is formed in a substantially U shape. The plurality of ribs 28 are provided at positions symmetrical with respect to the center of the fastener 10. As shown in FIG. 2, the ribs 28 are a first rib 28a formed in the connecting portion 23 from the other end of the first annular wall portion 22 to the other end of the second annular wall portion 24, and the first rib 28a. The second rib 28b is formed on the inner surface of the groove side of the second annular wall portion 24, and the third rib 28c is formed on the inner surface of the first annular wall portion 22 on the groove side of the first rib 28a. It is composed of. The first rib 28a is formed on the upper surface of the connecting portion 23 located at the bottom, and the second rib 28b and the third rib 28c extend upward from the first rib 28a, respectively.

A gap 34 is formed between the second rib 28b and the third rib 28c. By the way, when the second annular wall portion 24 is inserted into the mounting hole, the second annular wall portion 24 bends so as to approach the first annular wall portion 22. The gap 34 can prevent the bending of the second annular wall 24 from being excessively restricted by the ribs 28, and can suppress an increase in the insertion force.

FIG. 3 is a diagram for explaining an operation of attaching the fastener 10 to the attachment hole 12a. FIG. 4 shows an operation of attaching the fastener 10 to the attachment hole 12a, and shows a continuation of the operation of attaching the fastener 10 shown in FIG.

As shown in FIG. 3A, the fastener 10 is pushed into the mounting hole 12a of the member to be mounted 12 from the connecting portion 23 on the back side, and the outer surface of the second annular wall portion 24 comes into contact with the edge of the mounting hole 12a. The second annular wall portion 24 is formed so as to increase in diameter, and receives an inward force from the edge of the mounting hole 12a as the fastener 10 is pushed in.

As shown in FIGS. 3 (b) and 3 (c), the second annular wall portion 24 bends inward, that is, in a direction approaching the first annular wall portion 22. At this time, the gap 34 allows the second annular wall 24 to bend, making it easier to insert the fastener 10. As shown in FIG. 3D, when the fastener 10 is further pushed in, the tip of the flange portion 26 comes into contact with the surface of the attached member 12.

As shown in FIGS. 4A and 4B, when the fastener 10 is pushed in, the second annular wall portion 24 is bent so as to be closer to the first annular wall portion 22, and the flange portion 26 is covered. It is pressed against the surface of the mounting member 12 and bends so as to expand.

As shown in FIG. 4C, the locking portion 30 passes through the mounting hole 12a and is locked to the back edge of the mounting hole 12a. Although the portion of the second annular wall portion 24 above the first rib 28a is bent, the bending of the root portion is restricted by the first rib 28a. The first rib 28a can prevent the long side portion from being loosened and the sealing property from being lowered. Further, since the rigidity of the first annular wall portion 22 and the second annular wall portion 24 can be increased by the second rib 28b and the third rib 28c, the first annular wall portion 22 and the second annular wall portion 24 are reduced. Therefore, it is possible to prevent the long side portion from being deteriorated in sealing property.

The second rib 28b extends from the locking portion 30 to the other end 24b side of the second annular wall portion 24 to the locking portion 30 to one end 24a side of the second annular wall portion 24. That is, the upper end of the second rib 28b is located above the locking portion 30. Further, the third rib 28c also extends from the locking portion 30 to the other end 22b side of the first annular wall portion 22 to the locking portion 30 to one end 22a side of the first annular wall portion 22. That is, the upper end of the third rib 28c is located above the locking portion 30. As a result, it is possible to suppress the sagging of the first annular wall portion 22 and the second annular wall portion 24, suppress the deformation against the inward force received from the mounting hole, and suppress the deterioration of the sealing property.

The gap portion 34 is formed from the locking portion 30 to a position on the other end 24b side of the second annular wall portion 24. That is, the lower end of the gap portion 34 is located closer to the other end 24b of the second annular wall portion 24 than the locking portion 30. The insertion force when the locking portion 30 passes through the mounting hole 12a can be reduced.

The second rib 28b is located closer to the other end 24b than one end 24a of the second annular wall portion 24. That is, the upper end of the second rib 28b is recessed from the upper end of the second annular wall portion 24, and is recessed from the surface of the base portion 20. The upper end of the second rib 28b is located on the other end 24b side of the second annular wall portion 24 from the uppermost end of the surface of the flange portion 26. As a result, the flange portion 26 is easily bent, and it is possible to cope with a change in the plate thickness of the attached member 12. Like the second rib 28b, the third rib 28c is also located on the other end 22b side of the first annular wall portion 22 from one end 22a. That is, the upper end of the third rib 28c is recessed from the upper end of the first annular wall portion 22, and is recessed from the surface of the base portion 20.

As shown in FIG. 1A, the plurality of ribs 28 are provided not only on the long side portion of the fastener 10 but also on the arcuate portion. As a result, it is possible to suppress the sagging of the arcuate portion 20b and balance the entire circumference of the sealing property.

FIG. 5 is a diagram for explaining the fastener 10 of the modified example. The shape of the rib 128 of the fastener 10 of the modified example is different from that of the fastener 10 shown in FIG. Compared to the rib 28 shown in FIG. 2, the rib 128 of the modified example does not have the third rib 28c on the first annular wall portion 22 side, and is formed in a substantially J shape.

The rib 128 of the modified example is provided so as to project into the groove between the first annular wall portion 22 and the second annular wall portion 24. The rib 128 includes a first rib 128a formed in the connecting portion 23 from the other end of the first annular wall portion 22 to the other end of the second annular wall portion 24, and a second annular wall connected to the first rib 128a. It is composed of a second rib 128b formed on the inner surface of the portion 24.

In the fastener 10 of the modified example, the insertion force can be reduced by forming the gap portion 134 between the second rib 128b and the first annular wall portion 22 while improving the sealing property by the rib 128.

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, 12a mounting holes, 12 mounting members, 20 bases, 22 1st annular wall, 23 connecting, 24 2nd annular wall, 26 flanges, 28 ribs, 28a 1st rib, 28b 2nd rib , 28c 3rd rib, 30 locking part, 34 void part.

Claims (4)

A fastener for fastening to a mounting hole formed in a member to be mounted.
At the base,
A first annular wall portion whose one end is connected to the base portion,
A second annular wall portion provided outside the first annular wall portion and facing the first annular wall portion, and a second annular wall portion.
An annular connecting portion that connects the other end of the first annular wall portion and the other end of the second annular wall portion, respectively.
A flange portion that projects outward from one end of the second annular wall portion and
A plurality of ribs provided in the groove between the first annular wall portion and the second annular wall portion.
The second annular wall portion has a locking portion that locks on the edge of the mounting hole, and is an outer surface corresponding to the position where the rib is provided and is located at a part of the second annular wall portion in the circumferential direction. The outer surface around the locking portion is cut out.
The first annular wall portion hangs down from the peripheral edge of the base portion.
The inner peripheral side of the first annular wall portion is formed in a recess.
The rib
A first rib formed in the connecting portion from the other end of the first annular wall portion to the other end of the second annular wall portion,
A second rib connected to the first rib and formed on the groove-side surface of the second annular wall portion,
It has a third rib that is connected to the first rib and is formed on a groove-side surface of the first annular wall portion.
A fastener characterized in that a gap is formed between the second rib and the first annular wall portion, and between the second rib and the third rib. The second rib extends from the other end side of the second annular wall portion to the one end side of the second annular wall portion from the locking portion.
The fastener according to claim 1, wherein the gap portion is formed from the locking portion to a position on the other end side of the second annular wall portion. The fastener according to claim 1 or 2, wherein the second rib is located on the other end side of one end of the second annular wall portion. The fastener is formed in a long hole shape, and the first annular wall portion and the second annular wall portion have a linear long side portion.
The fastener according to any one of claims 1 to 3, wherein the rib is provided in a groove between the first annular wall portion and the long side portion of the second annular wall portion.

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