WO2014088043A1

WO2014088043A1 - Hole plug

Info

Publication number: WO2014088043A1
Application number: PCT/JP2013/082630
Authority: WO
Inventors: 剛裕佐藤
Original assignee: 株式会社ニフコ
Priority date: 2012-12-07
Filing date: 2013-12-04
Publication date: 2014-06-12
Also published as: JP6088231B2; JP2014114851A

Abstract

A gradual contact area-changing section (18C) connecting the tip section (18A) and the base section (18B) of the peripheral wall (18) of a hole plug (14) is configured so that the shape as seen from the direction of insertion into an installation hole (12) changes gradually and when inserted in the installation hole (12), some of the portion on the tip section (18A) side contact portions of the inner circumference (12B) of the installation hole (12). Meanwhile, the portion of the gradual contact area-changing section (18C) on the base section (18B) side is configured so that the entire circumference thereof contacts the entire inner circumference (12B) of the installation hole (12). The hole plug is configured so that when inserted in an installation hole (12), the area of contact with the installation hole (12) expands gradually from the tip section (18A) side to the base section (18B) side of the gradual contact area-changing section (18C).

Description

Hole plug

The present invention relates to a hole plug that covers a hole formed in a mounting member.

Conventionally, as a hole plug, for example, there is Patent Document 1. In this prior art, a cylindrical outer peripheral wall portion extending downward from an inner peripheral edge portion of a flange portion covering a hole edge peripheral surface of a mounting hole formed in the mounting member, and an inner side from a lower end of the outer peripheral wall portion. And an inner peripheral wall surface that is folded back and extends upward. In order to reduce the insertion force of the hole plug into the mounting hole, a plurality of engaging projections formed radially are formed on the outer peripheral wall portion.

No.02-008867

The present invention provides a hole plug that can reduce the insertion force into the mounting hole and improve the productivity.

According to a first aspect of the present invention, a flange portion that covers a hole edge peripheral surface of a mounting hole drilled in a mounting member, and extends from an inner peripheral edge of the flange portion toward an insertion direction into the mounting hole. A cylindrical body whose inner side is closed, and the shape seen from the insertion direction is gradually changed between the distal end portion and the root portion, and the portion on the distal end portion side when inserted into the mounting hole Part of the contact hole is in contact with a part of the inner peripheral part of the mounting hole, and a contact range gradually changing part is formed in which the entire periphery of the portion on the base part side contacts the entire periphery of the inner peripheral part of the mounting hole. There is provided a hole plug having an outer peripheral wall portion and a locking claw that is formed to protrude from an outer peripheral surface of a base portion of the outer peripheral wall portion and engages with a peripheral portion of the mounting hole.

In the above aspect, when the outer peripheral wall portion of the hole plug is inserted into the mounting hole, the contact range is formed between the tip portion and the root portion of the outer peripheral wall portion, and the shape seen from the insertion direction is gradually changed. A part of the portion on the distal end side of the deformed part comes into contact with a part of the inner peripheral part of the mounting hole. Thereafter, when the outer peripheral wall portion is further inserted into the mounting hole, the entire circumference of the base portion side portion of the contact range gradually changing portion comes into contact with the entire circumference of the inner peripheral portion of the mounting hole. Thereafter, when the outer peripheral wall portion is further inserted into the mounting hole, the locking claw protrudingly formed on the outer wall surface of the base portion of the outer peripheral wall portion is engaged with the mounting hole, and the mounting hole is closed. For this reason, in the contact range gradual change portion of the outer peripheral wall portion, the contact range with the mounting hole gradually increases, and the insertion resistance gradually increases. As a result, the insertion force is reduced as compared with the configuration in which the entire circumference of the outer peripheral wall portion is in contact with the inner peripheral portion of the mounting hole from the beginning of insertion. Further, since the distance between the base point when the outer peripheral wall portion is bent toward the inner peripheral side and the tip of the outer peripheral wall portion is increased, the insertion force is also reduced at this point. Furthermore, since it is not necessary to form engagement protrusions radially on the outer peripheral wall portion, the shape of the outer peripheral wall portion becomes simple, and the hole plug can be easily taken out from the mold, thereby improving productivity.

According to a second aspect of the present invention, in the first aspect of the present invention, when the attachment hole is rectangular, the shape of the contact range gradually changing portion viewed from the insertion direction is changed from a circular shape to a rectangular shape. Good.

In the above aspect, when the outer peripheral wall portion of the hole plug is inserted into the rectangular mounting hole, the contact is formed between the tip portion and the root portion of the outer peripheral wall portion, and the shape seen from the insertion direction is gradually changed. A part of the circular portion on the distal end side of the range gradually changing portion comes into contact with a part of the inner peripheral portion of the attachment hole. Thereafter, when the outer peripheral wall portion is further inserted into the attachment hole, the entire circumference of the rectangular portion on the base portion side of the contact range gradually changing portion comes into contact with the entire circumference of the inner peripheral portion of the attachment hole. Thereafter, when the outer peripheral wall portion is further inserted into the mounting hole, the locking claw that is formed to protrude from the outer wall surface of the base portion of the outer peripheral wall portion is engaged with the mounting hole, and the mounting hole is closed. For this reason, in the contact range gradual change portion of the outer peripheral wall portion, the contact range with the mounting hole gradually increases, and the insertion resistance gradually increases. As a result, the insertion force is reduced as compared with a configuration in which the entire circumference of the outer peripheral wall portion is in contact with the inner peripheral portion of the mounting hole from the initial stage of insertion. Further, since the distance between the base point when the outer peripheral wall portion is bent toward the inner peripheral side and the tip of the outer peripheral wall portion is increased, the insertion force is also reduced at this point. Furthermore, since it is not necessary to form engagement protrusions radially on the outer peripheral wall portion, the shape of the outer peripheral wall portion becomes simple, and the hole plug can be easily taken out from the mold, thereby improving productivity.

According to a third aspect of the present invention, in the first aspect of the present invention, when the attachment hole is circular, the shape of the contact range gradually changing portion viewed from the insertion direction is changed from a rectangle to a circle. May be.

In the above aspect, when the outer peripheral wall portion of the hole plug is inserted into the circular mounting hole, the hole plug is formed between the tip portion and the root portion of the outer peripheral wall portion, and the shape seen from the insertion direction gradually changes. A part of the rectangular part on the tip end side of the contact range gradual change part contacts a part of the inner peripheral part of the mounting hole. Thereafter, when the outer peripheral wall portion is further inserted into the attachment hole, the entire circumference of the circular portion on the base portion side of the contact range gradually changing portion comes into contact with the entire circumference of the inner peripheral portion of the attachment hole. Thereafter, when the outer peripheral wall portion is further inserted into the mounting hole, the locking claw that is formed to protrude from the outer wall surface of the base portion of the outer peripheral wall portion is engaged with the mounting hole, and the mounting hole is closed. For this reason, in the contact range gradual change portion of the outer peripheral wall portion, the contact range with the mounting hole gradually increases, and the insertion resistance gradually increases. As a result, the insertion force is reduced as compared with a configuration in which the entire circumference of the outer peripheral wall portion is in contact with the inner peripheral portion of the mounting hole from the initial stage of insertion. Further, since the distance between the base point when the outer peripheral wall portion is bent toward the inner peripheral side and the tip of the outer peripheral wall portion is increased, the insertion force is also reduced at this point. Furthermore, since it is not necessary to form engagement protrusions radially on the outer peripheral wall portion, the shape of the outer peripheral wall portion becomes simple, and the hole plug can be easily taken out from the mold, thereby improving productivity.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, a plurality of the locking claws may be formed at a predetermined interval along a circumferential direction of the outer wall surface. .

In the above aspect, a plurality of the locking claws of the hole plug are formed at predetermined intervals along the circumferential direction of the outer wall surface of the outer peripheral wall portion. For this reason, compared with the structure which formed the latching claw continuously in the perimeter along the circumferential direction of the outer peripheral wall part of a hole plug, the insertion force to the attachment hole of a hole plug can be made small.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the outer peripheral wall portion is spaced apart from the inner peripheral wall and extends in the insertion direction. A cylindrical inner peripheral wall portion connected to the tip of the inner peripheral wall, and a face plate having a concave portion recessed in the insertion direction at the center while closing the inside of the root portion of the inner peripheral wall portion.

In the above aspect, a cylindrical inner peripheral wall portion is formed which extends in the insertion direction with a space inside the outer peripheral wall portion, and has a distal end connected to the distal end of the outer peripheral wall portion. A concave portion that is recessed in the direction of insertion into the mounting hole is formed in the central portion of the face plate that closes the inside of the root portion of the inner peripheral wall portion. For this reason, the hole plug can be easily attached to the attachment hole by pressing the concave portion of the face plate in the direction of insertion into the attachment hole.

Since the first aspect of the present invention is configured as described above, the insertion force into the mounting hole can be reduced, and the productivity can be improved.

Since the second aspect of the present invention has the above-described configuration, the insertion force into the mounting hole can be reduced and the productivity can be improved.

Since the third aspect of the present invention has the above-described configuration, the insertion force into the mounting hole can be reduced and the productivity can be improved.

Since the fourth aspect of the present invention is configured as described above, the insertion force into the mounting hole can be reduced.

Since the fifth aspect of the present invention is configured as described above, it can be easily attached to the attachment hole.

It is the perspective view seen from the attachment hole side which shows the state before insertion to the attachment hole of the hole plug which concerns on 1st Embodiment of this invention. It is the perspective view seen from the hole plug side which shows the state before insertion to the attachment hole of the hole plug which concerns on 1st Embodiment of this invention. It is the perspective view seen from the attachment hole side which shows the state in the middle of the insertion to the attachment hole of the hole plug which concerns on 1st Embodiment of this invention. It is the top view seen from the insertion side which shows the hole plug which concerns on 1st Embodiment of this invention. It is a side view showing a hole plug concerning a 1st embodiment of the present invention. FIG. 6 is a sectional view taken along the line 6-6 in FIG. It is a side view which shows the hole plug which concerns on 2nd Embodiment of this invention. It is the perspective view seen from the attachment hole side which shows the state before insertion to the attachment hole of the hole plug which concerns on 3rd Embodiment of this invention. It is the perspective view seen from the attachment hole side which shows the state in the middle of the insertion to the attachment hole of the hole plug which concerns on 3rd Embodiment of this invention. It is sectional drawing corresponding to FIG. 6 which shows the hole plug which concerns on 4th Embodiment of this invention.

(First embodiment)
Next, a first 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. An arrow PS in the drawing indicates the direction of insertion of the hole plug into the mounting hole.

As shown in FIG. 1, a vehicle body panel 10 (an attachment member) as an example of an attachment member is provided with a square attachment hole 12 as an example of a rectangle, and the attachment hole 12 is a work hole or the like. Used as. Further, a hole plug 14 formed of a synthetic resin can be attached to and detached from the attachment hole 12, and the attachment hole 12 is closed by attaching the hole plug 14 to the attachment hole 12. .

As shown in FIG. 2, a flange portion 16 having a constant width W1 is formed at one end of the hole plug 14 in the direction along the axis 14A, which is the insertion direction of the mounting hole 12 in the hole plug 14, over the entire circumference. It is formed in a shape.

As shown in FIG. 5, the flange portion 16 is inclined from the inner peripheral edge portion 16 A toward the outer peripheral edge portion 16 B toward the distal end side in the insertion direction (the lower side in FIG. 5). As shown by a two-dot chain line in FIG. 6, in a state where the hole plug 14 closes the attachment hole 12, the flange portion 16 covers the hole edge peripheral surface 12 A on the upper surface side of the attachment hole 12.

Further, a cylindrical outer peripheral wall portion 18 is formed from the inner peripheral edge portion 16A of the flange portion 16 toward the insertion direction into the mounting hole 12 (downward in FIG. 6), and the outer peripheral wall portion 18 is formed of the hole plug 14. Is formed along the axial center 14A.

As shown in FIG. 1, the distal end portion 18 A of the outer peripheral wall portion 18 has a circular shape as an example of a circular shape as viewed from the direction of insertion into the mounting hole 12, and is large enough to be inserted into the mounting hole 12. It has become. Further, the distal end portion 18A of the outer peripheral wall portion 18 gradually increases in diameter from the distal end side toward the root portion side, and is easily inserted into the mounting hole 12.

On the other hand, the base portion 18 B of the outer peripheral wall portion 18 has a square shape as an example of a rectangle as viewed from the direction of insertion into the mounting hole 12, and the entire periphery when inserted into the mounting hole 12 is the mounting hole 12. The inner circumference portion 12B is in contact with the entire circumference.

Also, between the tip 18A and the root 18B in the outer peripheral wall 18 is a contact range gradually changing portion 18C that gently connects the tip 18A and the root 18B. That is, the shape of the contact range gradually changing portion 18C viewed from the direction of insertion into the mounting hole 12 is gradually changed from a circle to a square.

Therefore, when the portion on the tip end 18A side in the contact range gradually changing portion 18C is inserted into the mounting hole 12, a part P1 thereof is part of the inner peripheral portion 12B of the mounting hole 12, as shown in FIG. It comes to contact. On the other hand, a gap is formed between a portion other than P1 on the tip end 18A side in the contact range gradually changing portion 18C and the inner peripheral portion 12B of the mounting hole 12.

When the outer peripheral wall portion 18 is further inserted into the mounting hole 12, the contact range with the mounting hole 12 gradually increases in the contact range gradually changing portion 18C, and the base portion 18B side of the contact range gradually changing portion 18C is reached. As for this part, the perimeter is contacting the perimeter of the inner peripheral part 12B of the attachment hole 12. FIG.

As shown in FIG. 4, locking claws 20 project from the outer peripheral surface of the root portion 18 B of the outer peripheral wall portion 18, and each of the locking claws 20 has a base portion 18 B of the outer peripheral wall portion 18 in plan view. It protrudes in an arc shape outwardly from the outer wall surface. Note that a plurality of the locking claws 20 are formed at predetermined intervals along the circumferential direction of the outer peripheral wall portion 18. In this embodiment, the locking claws 20 are respectively formed at the center portions of a pair of opposing sides of the outer peripheral wall portion 18. ing.

As shown in FIG. 6, each locking claw 20 has a triangular shape in a side view. When the hole plug 14 is inserted into the mounting hole 12 of the body panel 10, the outer peripheral surface 20 A of the locking claw 20 is attached to the mounting hole 12. The locking claw 20 is elastically deformed in the inner direction (in the direction of arrow A in FIG. 6) together with the outer peripheral wall portion 18. And when the latching claw 20 passes the attachment hole 12, the latching claw 20 moves outside by the restoring force of the outer peripheral wall portion 18, and each latching claw 20 is attached as shown by a two-dot chain line in FIG. The body panel 10 is sandwiched between the flange portion 16 and the peripheral edge portion of the hole 12.

Inside the outer peripheral wall portion 18, a cylindrical inner peripheral wall portion 26 is extended in the insertion direction into the mounting hole 12 with an interval 24. The inner peripheral wall portion 26 is formed along the axial center 14 A of the hole plug 14, and the front end 26 A on the opposite side of the flange portion 16 is connected to the front end 18 D of the outer peripheral wall portion 18.

As shown in FIG. 2, the inner side of the base portion 26 B on the flange portion 16 side of the inner peripheral wall portion 26 is closed by a circular face plate 34. Further, a concave portion 34 A that is recessed in a hemispherical shape toward the insertion direction into the mounting hole 12 is formed in the central portion of the face plate 34.

In addition, as shown in FIG. 6, the thickness M1 of the face plate 34 is thicker than the thickness M2 of the inner peripheral wall portion 26 (M1> M2).

(Action / Effect)
Next, the operation and effect of this embodiment will be described.
In the present embodiment, when the hole plug 14 is attached to the attachment hole 12 of the body panel 10, first, the tip portion 18 A having a circular shape when viewed from the insertion direction in the outer peripheral wall portion 18 of the hole plug 14 is formed into the square attachment hole 12. Insert into. At this time, the distal end portion 18A of the outer peripheral wall portion 18 gradually increases in diameter from the distal end side toward the root portion side, and is easily inserted into the mounting hole 12.

When the outer peripheral wall portion 18 of the hole plug 14 is further inserted into the attachment hole 12, the shape of the contact range gradually changing portion 18C of the outer peripheral wall portion 18 viewed from the insertion direction into the attachment hole 12 is circular as shown in FIG. A part P1 of the portion on the tip end 18A side that is in contact with a part of the inner peripheral part 12B of the mounting hole 12.

Thereafter, when the outer peripheral wall portion 18 of the hole plug 14 is further inserted into the mounting hole 12, the contact position with the inner peripheral portion 12B of the mounting hole 12 in the contact range gradually changing portion 18C is 3 from the position of the one-dot chain line in FIG. Move to the dotted line position. At this time, the contact range between the contact range gradually changing portion 18 C and the inner peripheral portion 12 B of the mounting hole 12 gradually expands along the circumferential direction. The entire circumference of the portion on the base portion 18B side of the contact range gradually changing portion 18C of the outer peripheral wall portion 18 is in contact with the entire circumference of the inner peripheral portion 12B of the mounting hole 12.

Thereafter, when the outer peripheral wall portion 18 of the hole plug 14 is further inserted into the mounting hole 12, the entire circumference of the base portion 18B of the outer peripheral wall portion 18 becomes the entire circumference of the inner peripheral portion 12B of the mounting hole 12. Further, the outer peripheral surface 20A of the locking claw 20 slides with the inner peripheral portion 12B of the mounting hole 12, and the locking claw 20 together with the outer peripheral wall portion 18 is elastically deformed inward (in the direction of arrow A in FIG. 6). And when the latching claw 20 passes the attachment hole 12, the latching claw 20 moves outside by the restoring force of the outer peripheral wall portion 18, and each latching claw 20 is attached as shown by a two-dot chain line in FIG. The body panel 10 is sandwiched between the flange 16 and the peripheral edge of the hole 12. For this reason, the hole plug 14 is attached with the attachment hole 12 closed.

Therefore, in the hole plug 14 of the present embodiment, when attached to the attachment hole 12, in the contact range gradually changing portion 18C of the outer peripheral wall portion 18, the contact range with the inner peripheral portion 12B of the attachment hole 12 gradually increases. Insertion resistance gradually increases. As a result, the insertion force is reduced as compared with a configuration in which the entire circumference of the outer peripheral wall portion 18 is in contact with the inner peripheral portion of the mounting hole from the beginning of insertion. Furthermore, as shown in FIG. 6, since the distance L1 between the base point K1 when the outer peripheral wall portion 18 bends toward the inner peripheral side (the direction of arrow A in FIG. 6) and the distal end of the outer peripheral wall portion 18 increases, Even in terms of the point, the insertion force is smaller than in the configuration in which the entire circumference of the outer peripheral wall portion 18 comes into contact with the inner peripheral portion of the mounting hole from the initial insertion.

Moreover, in the hole plug 14 of this embodiment, unlike the patent document 1, since it is not necessary to form an engagement protrusion radially on the outer peripheral wall part 18, the shape of the outer peripheral wall part 18 becomes simple, and the hole plug 14 is attached. Productivity is improved because it can be easily removed from the mold.

Further, in the present embodiment, a plurality of locking claws 20 of the hole plug 14 are formed at predetermined intervals along the circumferential direction. For this reason, the insertion force of the hole plug 14 into the mounting hole 12 can be reduced as compared with the configuration in which the locking claw 20 is continuously formed along the circumferential direction of the outer peripheral wall portion 18 of the hole plug 14.

Further, in the hole plug 14 of the present embodiment, the inner peripheral wall portion 26 is extended inside the outer peripheral wall portion 18 with a space therebetween, and the inner side of the root portion 26B on the flange portion 16 side of the inner peripheral wall portion 26 is circular. The face plate 34 is closed. Further, a concave portion 34 A that is recessed in a hemispherical shape toward the insertion direction into the mounting hole 12 is formed in the central portion of the face plate 34. For this reason, the hole plug 14 can be easily attached to the attachment hole 12 by pressing the recess 34 A in the insertion direction (arrow PU direction) into the attachment hole 12.

(Second Embodiment)
Next, a second embodiment of the hole plug of the present invention will be described with reference to FIG.
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

As shown in FIG. 7, in the hole plug 14 of the present embodiment, the locking claw 20 is formed to continuously protrude in the circumferential direction along the outer periphery of the root portion 18 B of the outer peripheral wall portion 18. For this reason, the locking claw 20 engages with the peripheral edge portion of the mounting hole 12 on the entire circumference of the outer peripheral wall portion 18 with the mounting hole 12 closed by the hole plug 14. As a result, it is possible to make it difficult for the hole plug 14 to be detached from the mounting hole 12.

(Third embodiment)
Next, a third embodiment of the hole plug of the present invention will be described with reference to FIGS.
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

As shown in FIG. 8, in this embodiment, the mounting hole 12 of the body panel 10 is a circle as an example of a circular shape. On the other hand, the tip end portion 18A of the outer peripheral wall portion 18 of the hole plug 14 has a square shape as viewed from the direction of insertion into the mounting hole 12, and is sized to be inserted into the mounting hole 12. Further, the distal end portion 18A of the outer peripheral wall portion 18 is gradually enlarged from the distal end side toward the root portion side, and is easily inserted into the mounting hole 12.

On the other hand, the base portion 18B of the outer peripheral wall portion 18 has a circular shape as an example of a circular shape as viewed from the direction of insertion into the mounting hole 12, and the entire periphery when inserted into the mounting hole 12 is the mounting hole. The 12 inner peripheral portions 12B are in contact with the entire circumference.

Also, between the tip 18A and the root 18B in the outer peripheral wall 18 is a contact range gradually changing portion 18C that gently connects the tip 18A and the root 18B. That is, the shape of the contact range gradual change portion 18C viewed from the insertion direction into the mounting hole 12 gradually changes from a square to a circle.

Therefore, when the portion on the tip end 18A side in the contact range gradually changing portion 18C is inserted into the mounting hole 12, a part P2 thereof is part of the inner peripheral portion 12B of the mounting hole 12, as shown in FIG. It comes to contact. On the other hand, a gap is formed between a portion other than P2 on the tip end 18A side in the contact range gradual change portion 18C and the inner peripheral portion 12B of the attachment hole 12.

Further, when the outer peripheral wall portion 18 is inserted into the mounting hole 12, the contact range with the mounting hole 12 gradually increases in the contact range gradually changing portion 18C, and the base portion 18B in the contact range gradually changing portion 18C. As for the site | part of the side, the perimeter is contacting the perimeter of the inner peripheral part 12B of the attachment hole 12. FIG.

Therefore, also in the hole plug 14 of the present embodiment, the insertion force into the mounting hole 12 can be reduced and the productivity can be improved as in the first embodiment.

(Other embodiments)
In the above, the present invention has been described in detail for specific embodiments. However, 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 first embodiment, the shape viewed from the insertion direction of the distal end portion 18A of the outer peripheral wall portion 18 of the hole plug 14 into the attachment hole 12 corresponding to the attachment hole 12 that is a square as an example of a rectangle. Is a circle as an example of a circular shape, and the shape seen from the insertion direction of the root portion 18B of the outer peripheral wall portion 18 into the mounting hole 12 is a square. Instead of this, the mounting hole 12 has another rectangular shape or the like, and the shape of the outer peripheral wall portion 18 of the hole plug 14 viewed from the insertion direction of the tip end portion 18A into the mounting hole 12 is an ellipse, an ellipse, or the like. It is good also considering the shape seen from the insertion direction to the attachment hole 12 of the base part 18B of the outer peripheral wall part 18 as another rectangle, such as a rectangle.

Moreover, in the said 2nd Embodiment, it looked from the insertion direction to the attachment hole 12 of the front-end | tip part 18A of the outer peripheral wall part 18 of the hole plug 14 corresponding to the circular attachment hole 12 as an example of circular shape. The shape was a square as an example of a rectangle, and the shape viewed from the insertion direction of the root portion 18B of the outer peripheral wall portion 18 into the mounting hole 12 was a circle. Instead of this, the mounting hole 12 is formed into another circular shape such as an oval or an ellipse, and the shape of the outer peripheral wall portion 18 of the hole plug 14 viewed from the insertion direction into the mounting hole 12 is 18 Another rectangular shape may be used, and the shape seen from the insertion direction of the root portion 18B of the outer peripheral wall portion 18 into the mounting hole 12 may be another circular shape such as an oval or an ellipse.

Furthermore, the shape of the mounting hole 12 may be other shapes such as a rectangle or a triangle other than a circular shape, and the shape of the outer peripheral wall 18 viewed from the direction of insertion into the mounting hole 12 also corresponds to the shape of the mounting hole 12. Other shapes may be used.

In addition, the hole plug 14 of each of the above embodiments has a cylindrical inner peripheral wall portion 26 that extends in the insertion direction into the mounting hole 12 with an interval 24 inside the outer peripheral wall portion 18. As in the fourth embodiment shown in FIG. 10, the inner side of the outer peripheral wall 18 may be closed by a circular bottom plate 50 formed at the tip 18D, and the inner peripheral wall may not exist.

In each of the above embodiments, the two locking claws 20 are formed, but the number of the plurality of locking claws 20 may be two or more. Moreover, the planar view shape of the latching claw 20 is good also as a square shape and a triangular shape other than circular arc shape.

In each of the above-described embodiments, the configuration in which the mounting hole 12 formed in the body panel 10 of the automobile as an example of the mounting member is closed by the hole plug 14 has been described. However, the hole plug 14 of the present invention is the body panel of the automobile. It is also possible to close attachment holes formed in attachment members other than 10.

Claims

A flange portion covering the peripheral surface of the mounting hole bored in the mounting member;
A cylindrical body that extends from the inner peripheral edge of the flange portion in the insertion direction into the mounting hole and is closed on the inside, and has a shape viewed from the insertion direction between the tip portion and the root portion. It is gradually changing, when inserting into the mounting hole, a part of the part on the tip part side contacts a part of the inner peripheral part of the mounting hole, and the entire circumference of the part on the base part side is the An outer peripheral wall portion formed with a contact range gradually changing portion that contacts the entire circumference of the inner peripheral portion of the mounting hole;
A locking claw that is formed to protrude from the outer peripheral surface of the base part of the outer peripheral wall part and engages with the peripheral part of the mounting hole,
Hole plug with.
The hole plug according to claim 1, wherein when the mounting hole is rectangular, the shape of the contact range gradually changing portion viewed from the insertion direction is changed from a circular shape to a rectangular shape.
The hole plug according to claim 1, wherein, when the mounting hole is circular, the shape of the contact range gradual change portion viewed from the insertion direction is changed from a rectangle to a circle.
The hole plug according to any one of claims 1 to 3, wherein a plurality of the locking claws are formed at a predetermined interval along a circumferential direction of the outer wall surface.
A cylindrical inner peripheral wall portion that extends in the insertion direction with an interval inside the outer peripheral wall portion, and has a tip connected to the tip of the outer peripheral wall portion;
A face plate that closes the inner side of the inner peripheral wall portion and has a recess recessed in the insertion direction at the center,
The hole plug according to any one of claims 1 to 4, further comprising: