WO2014088100A1

WO2014088100A1 - Hole plug

Info

Publication number: WO2014088100A1
Application number: PCT/JP2013/082845
Authority: WO
Inventors: 健介藤原; 功五月女; 滝井　俊介
Original assignee: 株式会社ニフコ
Priority date: 2012-12-07
Filing date: 2013-12-06
Publication date: 2014-06-12
Also published as: CN104838185A; JP2014114850A; JP5911790B2

Abstract

A surface (20C) of a lid portion (20) of a hole plug (10) has formed therein at least a circular first groove portion (54). The first groove portion (54) is formed outside of where the lid portion (20) is connected to a base portion (24) extending from the rear surface of the lid portion (20), the first groove portion (54) being formed in a circle with a smaller diameter than a through hole. Thus, when the lid portion (20) is pressed towards the through hole in the direction of insertion and warps, the first groove portion (54) serves as the origin of this warping, and a central portion (20A) of the lid portion (20) is pressed into the through hole and caused to elastically deform until the central portion (20A) is inverted.

Description

Hole plug

The present invention relates to a hole plug that covers a through hole formed in a member to be attached.

Conventionally, as a hole plug, for example, there is Patent Document 1. In this prior art, a hole plug is provided with an attachment portion that fits into a through hole formed in a member to be attached, and a lid portion that is integrated with the attachment portion and closes the through hole.

Patent No. 4740124

The present invention provides a hole plug that can ensure the blocking property of the through hole and can reduce the protruding amount of the lid portion from the mounted member in a state in which the through hole is blocked.

According to a first aspect of the present invention, there is provided a lid that covers a through-hole formed in a member to be attached, a trunk that extends from the back surface of the lid and is inserted into the through-hole, An engaging claw that is formed on the outer peripheral side and engages with a peripheral edge portion of the through hole, and at least the outer peripheral side of the connecting portion between the body portion and the lid portion on the surface of the lid portion and has a smaller diameter than the through hole. A hole plug having a first groove portion that is formed in a circular shape and serves as a base point when the lid portion bends is provided.

In the above aspect, the body portion extending from the back surface of the lid portion of the hole plug is inserted into the through hole formed in the attached member, and the lid portion of the hole plug is provided in the attached member. Cover the through hole. Moreover, the 1st groove part is formed in the circle | round | yen which becomes a diameter smaller than a through-hole at least in the outer peripheral side of the connection part of a trunk | drum and a cover part in the surface of a cover part, and a cover part is the insertion direction to a through-hole. When pressed and bent, the first groove is the base point and elastically deforms to a position where the center of the lid is pushed into the through-hole, and the engaging claw formed on the outer peripheral side of the body is the periphery of the through-hole. Engage the part securely. In addition, when the lid portion is about to return to the original shape direction, the first groove portion allows the lid portion to follow the unevenness of the peripheral portion of the through hole, thereby securing the through hole closing property. Further, as compared with the configuration in which the shape maintaining means and the elastic force imparting means are formed on the lid portion, the projection amount of the lid portion of the hole plug from the attached member can be reduced while the through hole is closed.

According to a second aspect of the present invention, in the first aspect of the present invention, the second groove portion may be formed on the outer peripheral side of the first groove portion and in a circular shape having a larger diameter than the mounting hole. .

In the above aspect, when the lid portion is bent, the first groove portion and the second groove portion formed in a circular shape on the outer peripheral side of the first groove portion and having a larger diameter than the through hole serve as a base point. Since the portion is elastically deformed, the engaging claw is more reliably engaged with the peripheral portion of the through hole. Further, when the lid portion is to return to the original shape direction, the first groove portion and the second groove portion allow the lid portion to follow the unevenness of the peripheral portion of the through hole, thereby further improving the closing property of the through hole. To do.

In the second aspect of the present invention, the third aspect of the present invention may have a third groove portion that is radially formed on the lid portion and connects the first groove portion and the second groove portion.

In the above aspect, when the lid portion is bent, in addition to the first groove portion and the second groove portion, the lid portion is radially formed, and the third groove portion connecting the first groove portion and the second groove portion serves as a base point. Since the lid portion is elastically deformed, the engaging claw is more reliably engaged with the peripheral portion of the through hole. Further, when the lid portion is to return to the original shape direction, the first groove portion, the second groove portion, and the third groove portion cause the lid portion to follow the unevenness of the peripheral portion of the through hole, thereby closing the through hole. Is further improved.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the body portion extends in parallel from the back surface of the lid portion across the central axis of the body portion. A pair of planar wall portions and an annular distal end portion connected to the distal end portions of the pair of planar wall portions, and the engaging claws are spaced apart from the pair of planar wall portions. Provided between a pair of first claw portions and a pair of planar wall portions, which are connected to an outer peripheral portion of the tip portion by a hinge portion so as to be elastically deformable in the direction of the pair of planar wall portions. A pair of second claw portions connected to the outer peripheral portion of the tip portion by a hinge portion so as to be elastically deformable in the central axis direction of the trunk portion.

In the above aspect, the trunk portion is connected to the pair of planar wall portions extending in parallel from the back surface of the lid portion with the central axis of the trunk portion interposed therebetween, and the annular portion connected to the tip portions of the pair of planar wall portions. The engaging claw is provided to be separated from the pair of planar wall portions and is connected to the outer peripheral portion of the distal end portion so as to be elastically deformable in the direction of the pair of planar wall portions by a hinge portion. A pair of first claw portions and a pair of second claw portions formed between the pair of planar wall portions and connected to the outer peripheral portion of the tip portion so as to be elastically deformable in the direction of the central axis of the trunk portion by a hinge portion And consist of For this reason, the die cutting at the time of molding is a mold along the direction in which the mold is pulled out between the pair of first claw portions and the pair of planar wall portions, and the elastic deformation direction of the pair of second claw portions. The pulling direction matches. As a result, it is easy to remove the mold when the hole plug is molded, and the productivity is improved.

Since the first aspect of the present invention has the above-described configuration, it is possible to secure the closing property of the through hole and reduce the protruding amount of the lid portion from the attached member in a state where the through hole is closed.

Since the second aspect of the present invention has the above-described configuration, the engaging claw is more reliably engaged with the peripheral portion of the through hole, and the blockage of the through hole is further improved.

Since the third aspect of the present invention has the above-described configuration, the engaging claw is more reliably engaged with the peripheral portion of the through hole, and the blockage of the through hole is further improved.

Since the fourth aspect of the present invention has the above-described configuration, it is easy to remove the mold at the time of molding, and the productivity is improved.

It is the perspective view seen from the cover part side which shows the hole plug which concerns on one Embodiment of this invention. It is the perspective view seen from the trunk | drum side which shows the hole plug which concerns on one Embodiment of this invention. It is the side view seen from the 2nd nail | claw part direction which shows the hole plug which concerns on one Embodiment of this invention. It is the side view seen from the 1st nail | claw part direction which shows the hole plug which concerns on one Embodiment of this invention. It is the top view seen from the trunk | drum side which shows the hole plug which concerns on one Embodiment of this invention. FIG. 6 is an enlarged side cross-sectional view taken along the 6-6 cross-sectional line in FIG. 5 showing a state before the hole plug according to the embodiment of the present invention is inserted into the through hole. It is sectional drawing corresponding to FIG. 6 which shows the state which the pressing force acted on the cover part of the hole plug which concerns on one Embodiment of this invention. It is sectional drawing corresponding to FIG. 6 which shows the state attached to the through-hole of the hole plug which concerns on one Embodiment of this invention. It is the top view seen from the cover part side which shows the hole plug which concerns on other embodiment of this invention.

(Embodiment)
Next, an embodiment of the hole plug of the present invention will be described with reference to FIGS.
In the drawings, members (components) having the same or corresponding functions are denoted by the same reference numerals and description thereof is omitted as appropriate.

As shown in FIG. 6, the hole plug 10 of the present embodiment is formed of synthetic resin as an example, and a through hole 14 formed in a body panel 12 (attached member) of an automobile as an example of an attached member. Can be blocked. The surface 12A of the body panel 12 is coated with a coating 12B, and the coating 12B is also applied to the inner peripheral surface of the through hole 14 and the peripheral portion of the through hole 14 on the back surface 12C of the body panel 12.

As shown in FIG. 1, the hole plug 10 includes a circular lid portion 20 that covers the through hole 14 (see FIG. 6).

As shown in FIG. 3, the center portion 20A of the surface 20C of the lid portion 20 has a flat plate shape. Moreover, the outer peripheral part (flange part) 20B of the cover part 20 becomes an inclined surface inclined toward the back surface 20D side from the surface 20C side of the cover part 20 toward the outer peripheral side from the inner peripheral side. The surface 20C of the lid 20 is a pressing surface that is pressed when the hole plug 10 is inserted into the through hole 14.

As shown in FIG. 2, a seat portion 20E is formed at the center portion of the back surface 20D of the lid portion 20 of the hole plug 10, and the trunk portion inserted into the through hole 14 (see FIG. 6) from the seat portion 20E. 24 is extended. Further, the body portion 24 includes a pair of planar wall portions 26 erected in parallel from the seat portion 20E of the lid portion 20 along the center axis 24A across the center axis 24A of the body portion 24, and a pair of these. And an annular front end portion 28 to which the front end of the planar wall portion 26 is connected. Note that both end portions 26A of the pair of planar wall portions 26 in the longitudinal direction (the direction along the back surface 20D of the lid portion 20) extend in an arc shape in a direction approaching each other.

A pair of first claw portions 32 (engagement claws) as engagement claws disposed at opposing positions are connected to the outer peripheral portion of the distal end portion 28 of the trunk portion 24 by a hinge portion 34. A pair of second claw portions 36 (engagement claws) as engagement claws are provided by hinge portions 38 at positions 90 degrees apart from the first claw portions 32 in the circumferential direction on the outer peripheral portion of the distal end portion 28. It is connected. A thinned portion 37 is formed at the center in the width direction of the second claw portion 36.

As shown in FIG. 3, the pair of first claw portions 32 are provided apart from the pair of planar wall portions 26, and a gap is formed between the first claw portion 32 and the planar wall portion 26. Has been. Therefore, the first claw portion 32 can be elastically deformed by the hinge portion 34 from the normal position shown in FIG. 3 in the direction approaching the planar wall portion 26 (the direction of arrow A in FIG. 3).

As shown in FIG. 5, a central wall portion 30 that connects the pair of planar wall portions 26 to each other is formed at the center in the longitudinal direction of the pair of planar wall portions 26. In addition, a rectangular through hole 50 is formed along the hinge portion 34 on the inner peripheral side of the hinge portion 34 of the first claw portion 32 at the distal end portion 28 of the body portion 24. On the inner peripheral side of each through-hole 50, a rib 53 that connects the outer surface of the pair of planar wall portions 26 and the distal end portion 28 is formed. In addition, as shown in FIG. 3, the side view shape of these ribs 53 is a triangle.

As shown in FIG. 2, the pair of second claw portions 36 are formed between both end portions 26 A of the pair of planar wall portions 26. Therefore, as shown in FIG. 4, the second claw portion 36 enters between the pair of planar wall portions 26 from the normal position shown in FIG. 4 by the hinge portion 38, and the central axis 24 A of the trunk portion 24 (FIG. 2). It can be elastically deformed in the direction (see FIG. 4).

As shown in FIG. 3, the outer peripheral surface 32 A of the first claw portion 32 extends obliquely from the hinge portion 34 toward the outer peripheral side of the lid portion 20. For this reason, when the hole plug 10 is inserted into the through hole 14 of the body panel 12, the outer peripheral surface 32 A of the first claw portion 32 slides with the inner edge portion of the through hole 14 and approaches the planar wall portion 26 by the hinge portion 34. It is elastically deformed in the direction (arrow A direction in FIG. 3). And if the 1st nail | claw part 32 passes the through-hole 14, the 1st nail | claw part 32 will move to an outer side direction (direction opposite to the arrow A direction of FIG. 3) with the restoring force of the hinge part 34, and the 1st nail | claw part 32 will be shown. Is engaged with the peripheral edge of the through hole 14 on the back surface 12C of the body panel 12.

As shown in FIG. 4, the outer peripheral surface 36 A of the second claw portion 36 extends obliquely from the hinge portion 38 toward the outer peripheral side of the lid portion 20. For this reason, when the hole plug 10 is inserted into the through hole 14 of the body panel 12, the outer peripheral surface 36 A of the second claw portion 36 slides with the inner edge portion of the through hole 14, and the hinge portion 38 causes the inner side direction ( It is elastically deformed in the direction of arrow B in FIG. And when the 2nd nail | claw part 36 passes the through-hole 14, the 2nd nail | claw part 36 will move to an outer side direction (direction opposite to the arrow B direction of FIG. 4) with the restoring force of the hinge part 38, and the 2nd nail | claw part 36 will be shown. Engages with the peripheral edge of the through hole 14 on the back surface 10C of the body panel 12.

As shown in FIG. 1, a circular recess 52 is formed at the center of the surface 20 C of the lid 20, and a first groove 54 (groove) as a groove is formed in a circle in the outer peripheral direction of the recess 52. ing. Further, in the outer peripheral direction of the first groove portion 54 on the surface 20C of the lid portion 20, a second groove portion 56 (groove portion) as a groove portion is formed in a circular shape. Furthermore, on the surface 20 C of the lid portion 20, third groove portions 58 (groove portions) serving as four groove portions connecting the first groove portion 54 and the second groove portion 56 are formed radially. The four third groove portions 58 are formed at equal intervals along the circumferential direction of the lid portion 20. Further, the inner end portion 58A of each third groove portion 58 protrudes to the inner peripheral side from the first groove portion 54, the outer end portion 58B of each third groove portion 58 protrudes to the outer peripheral side from the second groove portion 56, and the lid portion 20 Has reached the outer peripheral edge.

As shown in FIG. 6, the first groove portion 54 is formed in a circular shape having a smaller diameter than the through hole 14 on the outer peripheral side of the connection portion 60 between the trunk portion 24 and the lid portion 20, and the first groove portion 54. The shape seen from the direction along the groove is trapezoidal. Further, the second groove portion 56 is formed on the outer peripheral side of the first groove portion 54 and in a circular shape larger than the through hole 14, and is located near the outer peripheral end of the lid portion 20. Moreover, the shape seen from the direction along the groove | channel of the 2nd groove part 56 is trapezoid. Furthermore, the cross-sectional area of the second groove portion 56 is smaller than the cross-sectional area of the first groove portion 54. In addition, as shown in FIG. 3, the shape seen from the direction along the groove | channel of the 3rd groove part 58 is also trapezoid.

(Action / Effect)
Next, the operation and effect of this embodiment will be described.
In the present embodiment, as shown in FIG. 6, the body portion 24 of the hole plug 10 is inserted into the through hole 14 of the body panel 12. At this time, the center portion 20A of the lid portion 20 of the hole plug 10 is pressed in the direction of insertion into the through hole 14 (the direction of arrow P in FIG. 6). When the distal end portion 28 of the body portion 24 of the hole plug 10 is inserted into the through hole 14, the outer peripheral surface 36 A of the second claw portion 36 slides on the inner edge portion of the through hole 14, and Elastically deforms inward (in the direction of arrow B in FIG. 4). As shown in FIG. 8, when the second claw portion 36 passes through the through hole 14, the second claw portion 36 moves outward (the direction opposite to the arrow B direction in FIG. 4) by the restoring force of the hinge portion 38. And the 2nd nail | claw part 36 engages with the peripheral part of the through-hole 14 of the back surface 12C of the body panel 12. FIG.

Similarly, the outer peripheral surface 32A of the first claw portion 32 slides with the inner edge portion of the through hole 14, and is elastically deformed in the direction approaching the planar wall portion 26 by the hinge portion 34 (arrow A direction in FIG. 3). And if the 1st nail | claw part 32 passes the through-hole 14, the 1st nail | claw part 32 will move to an outer side direction (direction opposite to the arrow A direction of FIG. 3) with the restoring force of the hinge part 34, and the 1st nail | claw part 32 will be shown. Engages with the peripheral edge of the through hole 14 on the back surface 12 C of the body panel 12.

At this time, in the hole plug 10 of the present embodiment, the first groove portion 54 is formed on the surface 20C of the lid portion 20 on the outer peripheral side of the connecting portion 60 between the trunk portion 24 and the lid portion 20 and with a smaller diameter than the through hole 14. It is formed in a circular shape. For this reason, as shown in FIG. 7, when the lid portion 20 is pressed in the insertion direction into the through hole 14 (the direction indicated by the arrow P in FIG. 7) and the lid portion 20 is bent, the first groove portion 54 serves as a base point. Thus, the outer peripheral portion (flange portion) 20B on the outer peripheral side of the first groove portion 54 in the lid portion 20 is elastically deformed to a position where it is pushed into the through hole 14. Furthermore, it elastically deforms to a position (not shown) where the outer peripheral portion 20B of the lid portion 20 is reversely warped. As a result, the 1st nail | claw part 32 and the 2nd nail | claw part 36 engage reliably with the peripheral part of the through-hole 14 of the back surface 12C of the body panel 12. FIG. Therefore, when the coating 12B is thick, when the coating 12B has severe irregularities, and when there is a coating pool on the back surface 12C of the body panel 12, the first claw portion 32 and The 2nd nail | claw part 36 can be reliably engaged with the peripheral part of the through-hole 14 of the back surface 12C of the body panel 12. FIG.

When the lid 20 is about to return to the original shape direction, the outer periphery 20B of the lid 20 is not deformed by the deformation of the outer periphery 20B of the lid 20 with the first groove 54 as a base point. Since it follows a uniform painted surface, the blockage of the through-hole 14 can be ensured. Compared with the configuration in which the shape maintaining means and the elastic force imparting means are formed in the lid as in the prior art, in this embodiment, the body is closed with the through hole 14 closed as shown in FIG. The protrusion amount H1 of the lid portion 20 of the hole plug 10 from the panel 12 can be reduced.

Further, in the hole plug 10 of the present embodiment, when the lid portion 20 is bent, the lid portion 20 is elastically deformed with the first groove portion 54 and the second groove portion 56 as base points. For this reason, the 1st nail | claw part 32 and the 2nd nail | claw part 36 engage with the peripheral part of the through-hole 14 of the back surface 12C of the body panel 12 more reliably. Further, when the lid portion 20 is about to return to the original shape direction, the first groove portion 54 and the second groove portion 56 cause the lid portion 20 to follow the unevenness of the peripheral portion of the through-hole 14, thereby The occlusion is further improved.

Further, in the hole plug 10 of the present embodiment, when the lid portion 20 is bent, the lid portion 20 is elastically deformed with the third groove portion 58 as a base point in addition to the first groove portion 54 and the second groove portion 56. For this reason, the 1st nail | claw part 32 and the 2nd nail | claw part 36 engage with the peripheral part of the through-hole 14 of the back surface 12C of the body panel 12 more reliably. Further, when the lid portion 20 tries to return to the original shape direction, the lid portion 20 follows the unevenness of the peripheral portion of the through hole 14 by the first groove portion 54, the second groove portion 56, and the third groove portion 58. This further improves the blockage of the through hole.

Further, in the hole plug 10 of the present embodiment, the body portion 24 includes a pair of planar wall portions 26 extending in parallel from the back surface 20D of the lid portion 20 with the central axis 24A of the body portion 24 interposed therebetween, and a pair of And an annular tip portion 28 connected to the tip portion of the planar wall portion 26. Further, the first claw portion 32 is provided to be separated from the pair of planar wall portions 26 and can be elastically deformed in the direction of the pair of planar wall portions 26 by the hinge portion 34 on the outer peripheral portion of the distal end portion 28. It is connected. The second claw portion 36 is formed between the pair of planar wall portions 26 and is connected to the outer peripheral portion of the distal end portion 28 so as to be elastically deformable in the direction of the central axis 24A of the trunk portion 24 by the hinge portion 38. Has been. For this reason, when the hole plug 10 is molded, die cutting is performed in the direction in which the mold is pulled out between the pair of first claw portions 32 and the pair of planar wall portions 26 (in the direction of arrow K1 in FIG. 5), The mold removal direction (in the direction of arrow K2 in FIG. 5) along the elastic deformation direction of the second claw portion 36 coincides. As a result, it is easy to remove the mold when the hole plug 10 is molded, and the productivity of the hole plug 10 is improved.

(Other embodiments)
While the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the above embodiment, the first groove portion 54, the second groove portion 56, and the four third groove portions 58 are formed in the lid portion 20 of the hole plug 10. Only the first groove portion 54 may be formed. Alternatively, only the first groove portion 54 and the second groove portion 56 may be formed in the lid portion 20 of the hole plug 10.

In addition to the first groove portion 54 and the second groove portion 56, the circular groove portion 70 is added to the lid portion 20 of the hole plug 10 to form three circular groove portions as in another embodiment shown in FIG. In addition, the number of the third groove portions 58 may be eight. Moreover, it is good also as a structure which has a 4 or more circular groove part, and the number of the 3rd groove part 58 is not limited to four or eight, It is good also as another several or one piece.

Moreover, in the said embodiment, although the shape seen from the direction along the groove | channel of the 1st groove part 54, the 2nd groove part 56, and the 3rd groove part 58 was made into the trapezoid shape, it replaced with this and the 1st groove part 54, 2nd The shape seen from the direction along the groove 56 and the third groove 58 may be other shapes such as a semicircular shape and a rectangular shape.

In the above embodiment, the body portion 24 has a pair of planar wall portions 26 and an annular distal end portion 28 to which the distal ends of the pair of planar wall portions 26 are connected. Instead of this, the body portion may have another configuration of a cylindrical shape.

Further, in the above embodiment, the engaging claws are provided apart from the pair of planar wall portions 26, and the direction of the pair of planar wall portions 26 by the hinge portion 34 on the outer peripheral portion of the distal end portion 28 of the trunk portion 24. Formed between the first claw portion 32 and the pair of planar wall portions 26 that are elastically deformable to each other, and a central axis 24A of the body portion 24A at the outer peripheral portion of the distal end portion 28 of the body portion 24 by a hinge portion 38. It was set as the 2nd nail | claw part connected so that elastic deformation was possible to the direction. Instead of this, for example, the engaging claw may be formed on the cylindrical outer peripheral portion at intervals along the circumferential direction, and may be another locking claw that can be elastically deformed in the central axis direction of the trunk portion.

Moreover, although the said embodiment demonstrated the structure which obstruct | occludes the through-hole 14 formed in the body panel 12 of the motor vehicle as an example of a to-be-attached member with the hole plug 10, the hole plug 10 of this invention is a body panel of a motor vehicle. It is also possible to close the through holes formed in the attached members other than 12.

Claims

A lid that covers the through hole drilled in the attached member;
A body portion extending from the back surface of the lid portion and inserted into the through hole;
An engaging claw that is formed on the outer peripheral side of the body portion and engages with a peripheral edge portion of the through hole;
A first groove portion which is formed in a circular shape having a diameter smaller than that of the through hole at least on the outer peripheral side of the connecting portion between the body portion and the lid portion on the surface of the lid portion, and serves as a base point when the lid portion bends When,
Hole plug with.
The hole plug according to claim 1, further comprising a second groove portion formed in a circular shape having a larger diameter than the mounting hole on the outer peripheral side of the first groove portion.
The hole plug according to claim 2, further comprising a third groove portion that is radially formed on the lid portion and connects the first groove portion and the second groove portion.
The body portion includes a pair of planar wall portions extending in parallel from the back surface of the lid portion across the center axis of the body portion, and an annular shape connected to the tip portions of the pair of planar wall portions. A tip, and
The engaging claws are provided apart from the pair of planar wall portions, and are connected to the outer peripheral portion of the tip portion by a hinge portion so as to be elastically deformable in the direction of the pair of planar wall portions. A pair of second claw portions formed between the one claw portion and the pair of planar wall portions and connected to the outer peripheral portion of the tip portion so as to be elastically deformable in the direction of the central axis of the trunk portion by a hinge portion; The hole plug according to any one of claims 1 to 3, comprising: