JP2011052810A - Resin clip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure sealability in the periphery of an attaching hole of a mating member, by a resin dish part molded integrally with an anchor part. <P>SOLUTION: A clip body 10 includes the anchor part 12, and the dish part 16 projected integrally outwards from a base part side 12b of the anchor part, the clip body is attached to the mating member, by inserting the anchor part into the attaching hole of the mating member, and the dish part 16 is pressed onto a surface of the mating member, to seal the periphery of the attaching hole, in this resin clip. Water repellency is imparted to at least a seal face 18 pressed onto the surface of the mating member, in the dish part 16. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a resin clip used when a door trim or the like of a vehicle is assembled to a door inner panel or the like. Specifically, the present invention relates to a resin clip that can be attached to a mating member by inserting an anchor portion into a mating member mounting hole such as a door inner panel and can seal the periphery of the mounting hole in this state.

  For this type of resin clip, for example, the technique disclosed in Patent Document 1 is already known. In this technique, a flange (dish part) is integrally formed at the base of the anchor part inserted into the mounting hole of the mating member, and the outside of the dish part is covered with a seal pad made of an elastic material such as an elastomer. Yes. This seal pad has a skirt portion that spreads outward from the portion covering the plate portion, and this skirt portion is pressed against the surface of the mating member to seal the periphery of the mounting hole.

JP 2004-278731 A

In the technique disclosed in Patent Document 1, since the resin dish part and the sealing pad made of elastomer or the like are molded in two colors to ensure sealing performance, the clip itself becomes expensive and the sealing pad is removed from the dish part. There is a risk of peeling off.
In order to avoid such problems, the dish part formed integrally with the anchor part is provided with appropriate flexibility, and this dish part is pressed against the surface of a mating member such as a door inner panel to improve the sealing performance. Some types of clips are reserved. However, there is a limit to the sealing performance by the resin dish, and it is difficult to ensure the sealing performance as required.

  The present invention is intended to solve such a problem, and its purpose is to ensure the sealing performance around the mounting hole of the mating member by the resin-made dish part formed integrally with the anchor part. is there.

The present invention is for achieving the above object, and is configured as follows.
According to a first aspect of the present invention, a clip main body includes an anchor portion and a dish portion projecting outward integrally from the base side of the anchor portion, and the clip main body is inserted into the mounting hole of the mating member. Is attached to the mating member, and the plate portion is pressed against the surface of the mating member to seal the periphery of the mounting hole, and in the dish portion, at least the sealing surface pressed against the surface of the mating member Has water repellency.

  In this way, by providing water repellency to the sealing surface of the dish part formed integrally with the anchor part, in a state where the clip body is attached to the mating member, sufficient sealing performance around the attachment hole is ensured. Can do. Therefore, it is simple and inexpensive compared to conventional clips that ensure sealing performance by attaching rubber packing to the plate part later, or joining a sealing material such as elastomer to the plate part by two-color molding. Clips can be provided. Moreover, in the conventional clip, there is a possibility that the packing may fall off or the sealing material may be peeled off, but such a problem is also solved.

According to a second invention, in the first invention, the clip main body is formed of a resin material to which a water repellent is added, and the water repellent is bleed out on the surface of the clip main body including the dish portion and the anchor portion to improve the water repellency. I'm giving it back.
In this configuration, since the anchor portion has water repellency in addition to the plate portion of the clip body, water can be prevented from entering through the anchor portion inserted into the mounting hole of the mating member, and as a result, the plate portion Water can be prevented from accumulating on the sealing surface side, and the sealing function can be further enhanced.

According to a third invention, in the first invention, at least the sealing surface of the dish part is provided with fine irregularities that assist in water repellency.
As a result, at least the sealing surface of the dish portion performs a super water-repellent function, and the sealing performance around the mounting hole is ensured.

The perspective view showing the resin-made clips of Embodiment 1. FIG. The front view of FIG. The top view of FIG. Explanatory drawing showing the use condition of the resin-made clips in Embodiment 1. FIG. FIG. 3 is an enlarged cross-sectional view showing a part of the resin clip and the counterpart member of the first embodiment. The expanded sectional view showing the example of a change of the partial shape of the dish part in a resin-made clip. The perspective view showing the resin-made clips of Embodiment 2. FIG. The front view of FIG. FIG. 4 is an enlarged cross-sectional view showing a part of a resin clip and a counterpart member according to a second embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1
The clip body 10 shown in FIGS. 1 to 5 is an integrally molded product made of resin. The structure of the clip main body 10 is roughly divided into an anchor portion 12 located on the upper side in FIGS. 1 and 2, a connecting portion 14 located on the lower side, and a plate portion 16 located on the boundary between them.
The anchor portion 12 includes a plurality (four pieces) of flexure pieces 12c that are arranged at intervals in the circumferential direction between the distal end side 12a and the base side 12b. The distal end side 12 a of the anchor portion 12 is a conical block, and the opposite base side 12 b has a predetermined rigidity necessary for the base of the clip body 10. Each bending piece 12c is like a “both-end supported beam” in which both ends are coupled to the distal end side 12a and the base side 12b, and bends toward the axial center side of the anchor portion 12 by their elasticity. be able to.

Each bending piece 12c is provided with a locking shoulder 12d that bulges outward most on the base portion 12b side of the anchor portion 12. Therefore, when the anchor portion 12 is inserted into the mounting hole 22 opened in the mating member 20 such as the door inner panel shown in FIG. 4 or FIG. 5, the locking shoulder 12d of each flexible piece 12c is mated as described later. It is located inside the member 20 and engages with the peripheral edge of the mounting hole 22. Thereby, the clip main body 10 is held in a state attached to the mating member 20. The distal end side 12a and the base side 12b of the anchor portion 12 are coupled to each other by a column 12e that is arranged so as not to interfere with each of the bending pieces 12c. The support 12e has, for example, a “K” shape in plan view (FIG. 3), and secures rigidity against bending of the anchor portion 12.
Various changes can be made to the number of the flexure pieces 12c in the anchor portion 12 or the shape of the support columns 12e.

The connecting portion 14 is continuous from the base portion side 12b of the anchor portion 12, and is constituted by two upper and lower flanges 14a and 14b and a small-diameter cylindrical portion 14c positioned therebetween. The connecting portion 14 is for attaching the clip body 10 to a mounting member 30 such as a door trim shown in FIG. As described above, the clip body 10 is integrally formed of resin. However, the connecting portion 14 may be formed separately from the dish portion 16 or may be formed in two colors.
The mounting member 30 is provided with a seat portion 32 for coupling the connecting portion 14 on the back surface opposite to the design surface. The seat portion 32 has a slit 34 that is open at one end. The cylindrical portion 14c of the connecting portion 14 is pushed into the slit 34 so that the flanges 14a and 14b are positioned on the upper and lower surfaces of the seat portion 32. 14 is coupled to the seat 32.

  The dish part 16 has a disk shape projecting obliquely outward from the outer periphery of the base part 12b of the anchor part 12 around the axis of the anchor part 12, and has an appropriate elasticity due to the resin material. As is well known, the planar shape of the dish part 16 includes an ellipse and an ellipse in addition to a perfect circle. Further, when the anchor portion 12 is inserted into the mounting hole 22 of the mating member 20 shown in FIG. 4 or 5, the dish portion 16 is strongly pressed and elastically deformed around the mounting hole 22 in the mating member 20.

Regarding the use of the clip main body 10, as described above, after the coupling portion 14 is attached to the seat portion 32 of the mounting member 30 shown in FIG. 4, the anchor portion 12 is inserted into the attachment hole 22 of the mating member 20. By this insertion, each bending piece 12 c of the anchor portion 12 passes through the attachment hole 22 while being pushed and bent toward the axial center side, and each locking shoulder 12 d engages with the periphery of the attachment hole 22. As a result, the clip body 10 is attached to the mating member 20, and the mounting member 30 is mounted to the mating member 20 through the clip body 10.
In the state where the clip body 10 is attached to the mating member 20, the dish portion 16 is pressed against the periphery of the mounting hole 22 in the mating member 20 as described above. The seal surface 18 on the side pressed against the surface of the mating member 20 (the left side surface in FIG. 4 or FIG. 5) in the dish portion 16 is important in securing the sealing performance around the mounting hole 22.

Therefore, in the present embodiment, for example, the sealing surface 18 is coated with a water repellent such as a fluorine compound or silicon oil, so that the sealing surface 18 has water repellency due to the lotus effect (lotus leaf effect). Due to the water repellency of the sealing surface 18, a sealing property between the dish portion 16 and the surface of the mating member 20 is ensured. As a result, as shown by the arrow in FIG. 4, the water that enters the mounting hole 22 from the right side surface of the mating member 20 is stopped by the dish portion 16, and the water oozes out to the side of the mounting member 30 (inside the door). It is prevented.
The water repellent coating may be applied to the entire surface of the clip body 10 including the anchor portion 12 and the dish portion 16. Further, the clip body 10 is molded with an additive resin of a water repellent such as oil-impregnated polyacetal or fluorine-containing polyacetal, and the water repellent is bleed out on the surface of the clip body 10, or the clip body 10 is made of polypropylene, polyacetal, nylon. It is possible to give the entire surface of the clip body 10 water repellency by molding with a resin material having a water repellency effect such as polyethylene.

In any means, by providing the entire surface of the clip body 10 including the anchor portion 12 and the dish portion 16 with water repellency, the anchor portion 12 also exhibits a water repellency in addition to the above-described sealing property in the dish portion 16. To do. Due to the water repellency of the anchor portion 12, it is possible to prevent water from entering from the right side surface of the mating member 20 through the anchor portion 12 inserted into the mounting hole 22, and as a result, water accumulates on the sealing surface 18 side of the dish portion 16. Can be prevented. Therefore, the sealing performance between the plate part 16 and the surface of the mating member 20 is further enhanced.
In addition, the sealing performance can be ensured by the plate portion 16 of the clip body 10 because the cost of the clip body 10 is lower than when the rubber packing is assembled later or when the sealing material such as elastomer is formed in two colors. In addition to being able to reduce, problems such as dropping off of the packing and peeling of the sealing material are also eliminated.

As described above, the sealing surface 18 of the dish portion 16 formed of a water repellent resin or provided with a water repellent coating has sufficient water repellency even if it is a smooth surface. Accordingly, when the surface of the sealing surface 18 having water repellency is provided with irregularities 18a in units of micrometers as shown in FIG. Furthermore, if the unevenness 18b of the nanometer unit is provided on the surface of the unevenness 18a, the water repellency of the sealing surface 18 is further improved. In this case, the water that enters the mounting hole 22 of the counterpart member 20 is effectively stopped by the super-water-repellent function of the seal surface 18.
The irregularities 18a and 18b can be easily formed by subjecting the molding surface for the seal surface 18 of the mold for molding the clip body 10 to a micrometer unit or nanometer unit.

Embodiment 2
The clip main body 10 shown in FIGS. 7 to 9 includes a dish portion 16A that protrudes almost horizontally from the outer periphery of the base portion 12b of the anchor portion 12 outward. Also in the dish portion 16A, when the clip main body 10 is attached to the mating member 20, the entire area of the seal surface 18A is in close contact with the periphery of the mounting hole 22 in the mating member 20 (FIG. 9). The point that water repellency is imparted to at least the sealing surface 18A of the dish portion 16A is the same as in the first embodiment.

DESCRIPTION OF SYMBOLS 10 Clip main body 12 Anchor part 12b Base side 16 Dish part 18 Seal surface 20 Opposing member 22 Mounting hole

Claims (3)

The clip main body includes an anchor portion and a dish portion integrally projecting outward from the base side of the anchor portion, and the clip main body is attached to the mating member by inserting the anchor portion into the mounting hole of the mating member. And a resin clip configured to seal the periphery of the mounting hole by pressing the plate portion against the surface of the mating member,
A resin clip having a water repellency on at least a seal surface pressed against the surface of the mating member in the dish portion. The resin clip according to claim 1,
A resin clip in which the clip body is formed of a resin material to which a water repellent is added, and the water repellent is bleed out on the surface of the clip body including the dish portion and the anchor portion to impart water repellency. The resin clip according to claim 1,
A resin clip in which at least the sealing surface of the dish is provided with fine irregularities to assist in water repellency.

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