JPH0530625U - Seal plug - Google Patents

Abstract

(57) [Abstract] [Purpose] Seal plug for closing a working hole formed in a part of a closed cross section formed by joining a plurality of panels and projecting a screw member for fixing a decorative member or the like. Improve the workability of mounting and sealing. A seal plug (1) is inserted into the working hole (2) and engages with the screw member (41), and a seal lip piece (15) that elastically contacts the periphery of the working hole (2) and closes it.
And a seal portion having the seal portion 12
It must have a connecting part 14 that connects to 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seal plug for closing a work hole formed in an automobile panel.

[0002]

[Prior art]

 A rear spoiler may be attached to a back panel or a trunk panel of a vehicle to improve the appearance of the vehicle to improve its commercialability and to improve driving stability at high speeds. As shown in FIG. 6, a part of the rear spoiler 4 is fixed to a trunk panel or the like by tightening a bolt 41 embedded in the nut. The trunk panel 3 is formed by joining an outer panel 31 and an inner panel 32 and using a structural adhesive. The outer panel 31 and a part of the inner panel 32 are spaced apart from each other to form a closed cross section in order to improve rigidity. This structure is also used for parts of the trunk panel where brake lights, rear garnish, rear spoiler, etc. may be mounted.

Describing the rear spoiler further, the rear spoiler 4 in which the bolts 41 are embedded is installed on the surface of the outer panel 31 from the outer panel 31 side through the bolt insertion holes 33. The rear spoiler 4 is fixed by tightening nuts with a tool inserted through the working hole 2 of the inner panel 32. The length of the bolt 41 is slightly longer than the gap between the outer panel 31 and the inner panel 32 in consideration of workability when tightening the nut. Further, the working hole 2 needs to prevent rainwater or the like entering the closed section from entering the trunk through the bolt insertion hole 33 of the outer panel 31. Therefore, the seal plug 5 as shown in FIG. 5 is used to close the working hole 2. The seal plug 5 includes a seal portion 51 having a seal lip piece 54 that elastically contacts the inner panel 32 to close the working hole 2, and a hollow cylindrical mounting base portion having an engaging protrusion 53 that engages with the working hole 2. It is composed of 52. The diameter of the outermost peripheral edge of the seal lip piece 54 is larger than that of the working hole 2. Further, as shown in FIG. 7, the hollow cylindrical mounting base 52 is provided with a relief portion 55 inclined upward so as to avoid interference with the tip of the bolt 41.

By the way, the clearance (b) between the outer panel 31 and the inner panel 32 varies due to variations in bending the inner panel 32. Further, the center of the bolt 41 for tightening the nut and the center of the working hole 2 of the inner panel 32 are different in the installation work of the rear spoiler 4 on the outer panel 31, and the bolt insertion hole 33 and the inner panel of the outer panel 31. There may be eccentricity due to variations in the drilling positions of the 32 working holes 2. Due to fluctuations in the gap between the panels and eccentricity between the bolt insertion hole 33 and the work hole 2, a part of the seal plug 5 and the nut-tightened bolt 41 interfere with each other, and the seal plug 5 is , It may not be attached to the inner panel 32 as shown in FIG. Further, even if the seal plug 5 can be attached to the inner panel 32, a gap B is created between the seal plug 5 and the inner panel 32 as shown in FIG. 7, and the working hole 2 cannot be reliably closed. Sometimes .

The problem to be solved by the present invention is to mount a work hole on a vehicle panel that forms a closed section by absorbing fluctuations in the gap between the panels and eccentricity between the bolt and the work hole. The purpose of the present invention is to provide a seal plug that can improve the performance and can surely close the work hole.

[0006]

[Means for Solving the Problems]

 A seal plug that is formed by joining a plurality of panels and that closes a working hole provided in a part of a closed cross section from which a screw member for fixing a decorative member or the like projects is configured as follows. The seal plug includes an engaging portion that is inserted into the working hole and engages with the screw member, a sealing portion that has a seal lip piece that elastically contacts the periphery of the working hole to close the sealing hole, and the sealing portion. A connecting portion that connects to the engaging portion is provided.

[0007]

[Action]

 The engagement portion of the seal plug engages with the screw member protruding into the closed cross section. Even if the gap between the plurality of panels forming the closing surface changes, the locking claw of the seal plug engages with the appropriate position of the screw member. The seal part of the seal plug makes elastic contact with the vehicle panel and closes the periphery of the work hole. Due to the axial pulling force when the locking claw of the seal plug engages the screw member, the degree of close contact between the seal portion of the seal plug and the automobile panel increases.

[0008]

【Example】

 The seal plug that closes the working hole through which the screw member for fixing the rear spoiler projects will be described below. As shown in FIG. 1, the seal plug 1 includes a hollow cylindrical engagement portion 11 and a bowl-shaped seal portion 12. Two engaging claws 13 that project inward obliquely downward and engage with the bolt 41 are formed at the lower part of the hollow cylindrical engaging portion 11. Windows 16 are provided on both sides and the upper portion of the locking claw 13 for promoting the bending of the locking claw. The distance between the locking claws is shorter than the diameter of the thread ridge of the bolt embedded in the rear spoiler. Further, the tip of the engagement portion 11 on the seal plug 12 side is a retaining portion 17 having a T-shaped cross-section and having a diameter larger than the outer diameter of the engagement portion 11 of the seal plug 1.

The bowl-shaped seal portion 12 is composed of a flat portion near the center and an outer periphery of the seal lip piece 15 extending obliquely downward along the entire circumference. The central portion of the seal portion 12 projects in the axial direction and surrounds the outer peripheral surface of the retaining portion 17 of the engaging portion 11, and serves as a connecting portion 14 between the seal portion 12 and the engaging portion 11. The engaging portion 11 is formed of a relatively hard resin such as polyacetal, and is engaged with the bolt 41 of the nut-tightened rear spoiler 4 with a sense of moderation. The seal portion 12 is formed by using a relatively soft thermoplastic elastomer such as Pelprene so as to be easily adapted to an automobile panel such as a trunk panel. The seal plug is two-color molded by injection molding using the above two kinds of materials.

Next, an outline of how the seal plug 1 closes the working hole 2 of the trunk panel 3 will be described. The bolt 41 embedded in the rear spoiler 4 is fixed to the trunk panel 3 by tightening the nut. In this mounting work, the working hole 2 used when inserting the tool for tightening the nut 42 is not blocked, and if used as it is, rainwater may become a factor to enter the trunk room. To prevent this, the seal plug 1 is pushed toward the working hole 2. Through this working hole 2, the cylindrical engaging portion 11 of the seal plug 1 inserted into the closed cross section of the trunk panel 3 is pressed against the bolt 41. The bottom surface of the connecting portion 14 of the seal plug 1 is pushed in until the tip of the bolt 41 abuts, and the seal plug 1 is attached to the trunk panel 3. The locking claw 13 of the engaging portion 11 of the seal plug 1 engages with the thread of the bolt 41. At this time, the seal lip piece 15 of the seal plug 1 elastically contacts the inner panel 32 of the trunk panel 3. Even if the clearance b between the outer panel 31 and the inner panel 32 changes, if the amount of change is set and the amount of overlap between the seal lip piece 15 of the seal plug 1 and the trunk panel 3 is set, the inner panel 32 There is no gap between the seal lip piece 15 and the seal lip piece 15.

In the seal plug of the present embodiment, the portion of the rear spoiler 4 tightened with the nut that engages with the bolt 41 has two locking claws 13. However, as shown in FIGS. 4A and 4B, It can be formed on the inner peripheral wall surface of the hollow cylindrical engagement portion 11 with a large number of locking pieces 17 projecting diagonally upward from the upper right half and the lower left half in a cross section in a substantially quarter circle. It

[0012]

【effect】

 Even if the gap between the panels forming the closed cross section fluctuates or the center of the work hole and the bolt projecting in the closed cross section shifts, the seal plug reliably blocks the work hole. The workability of attaching the seal plug to the automobile panel and the sealability are improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a seal plug of the present invention.

FIG. 2 is a rear perspective view of an automobile for explaining a portion to which a seal plug is attached in the present embodiment.

3A to

3C is a cross-sectional view taken along the line AA in FIG. 2, showing the sealing plug of the present invention up to closing the working hole of the trunk panel.

4A to

FIG. 4B is a cross-sectional view showing another embodiment of the seal plug of the present invention.

FIG. 5 is a cross-sectional view showing a conventional seal plug.

FIG. 6 shows a defect related to the mounting of the seal plug of the prior art.

FIG. 3C is a cross-sectional view corresponding to FIG.

FIG. 7 shows a defect related to installation of a seal plug of the prior art.

FIG. 3C is a cross-sectional view corresponding to FIG.

[Explanation of symbols]

 1 Seal Plug 11 Engagement Part 12 Sealing Part 14 Connecting Part 15 Seal Lip Piece 2 Working Hole 41 Screw Member

Claims (1)

[Scope of utility model registration request] 1. A seal plug for closing a working hole, which is formed by joining a plurality of panels and is provided in a part of a closed cross section from which a screw member for fixing a decorative member or the like protrudes, An engaging portion that is inserted into the working hole and engages with the screw member, a sealing portion that has a seal lip piece that elastically contacts the periphery of the working hole and closes the working hole, and the sealing portion is connected to the engaging portion. Seal plug with a connecting part that