JP2008149504A - Structure of resin component fitting claw - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save a fitting space by minimizing the length of a fitting claw, to mold a resin component without using a slide mold, and to improve the appearance of the resin component. <P>SOLUTION: When the resin component 11 such as a vehicle interior component is fitted to a member 16 to be fitted, or when an engagement claw piece 12 to be engaged with an engagement hole 16a formed in the member 16 is set elastically swingably in the resin component 11, a bottomed concave groove part 15 is formed to surround the periphery of the root part of the fitting piece base part 14 of the engagement claw piece 12 in the resin component 11, and the engagement claw piece 12 is composed elastically swingably. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a resin part mounting claw structure in which a resin part such as an interior part of a vehicle is attached to an attached member side using an engaging claw piece.

  As a typical example, this type of conventional resin component mounting claw structure has a configuration as shown in FIGS.

  5, the engaging claw piece 2 protrudes from the resin component 1 so as to be elastically swingable, and the claw portion 3 that protrudes on the opposite side of the engaging claw piece 2 from the elastic swinging side is provided. The resin part 1 is attached to the attachment member by inserting the engagement claw piece 2 through the engagement hole (not shown) while elastically swinging the engagement claw piece 2 and engaging the claw portion 3. .

  In FIG. 6, a gate-shaped engagement piece base 4 is formed so as to be elastically swingable on the resin component 1, and a locking claw that extends to the top inner wall 4 a of the engagement piece base 4 toward the resin component 1 side. A piece 2 is formed, and a claw portion 3 is provided at the tip of the locking claw piece 2 so as to protrude on the opposite side to the elastic swinging direction of the locking claw piece 2. The resin component 1 is attached to the member to be attached by being inserted into an engagement hole (not shown) on the side of the member to be attached and engaging the claw portion 3.

In FIG. 7, the engaging claw piece 2 protrudes from the resin part 1, and the notch 1 a is formed on both sides of the engaging claw piece 2 in the thickness direction of the engaging claw piece 2 in the resin part 1. The engaging claw piece 2 is configured to be elastically swingable with respect to the resin component 1 and is provided with a claw portion 3 that protrudes on the opposite side of the engaging claw piece 2 from the elastic swinging side. The resin part 1 is attached to the attachment member by inserting the engagement claw piece 2 through the engagement hole (not shown) while elastically swinging the engagement claw piece 2 and engaging the claw portion 3. (See, for example, Patent Document 1).
JP-A-9-79228

  Among the conventional techniques configured as described above, in the engaging claw piece 2 shown in FIG. 5, the height dimension h of the engaging piece base portion 4 is set in order to protrude from the resin component 1 so as to be elastically swingable. For this reason, it is necessary to provide a certain amount of space between the resin component 1 and the mounted component. For this reason, this space can be applied when the space cannot be set too large. Can not.

  In the engaging claw piece 2 shown in FIG. 6, since the engaging piece base 4 is formed in a gate shape, it has an undercut shape with respect to the die cutting direction x, and a slide die is used for molding a resin part. Inevitably, the manufacturing cost will increase.

  In the engaging claw piece 2 shown in FIG. 7, since the slit-shaped cut portions 1 a penetrating both the front and back surfaces of the resin component 1 are formed, the cut portions 1 a are also exposed on the surface side of the resin component 1. As a result, the appearance of the resin component 1 is deteriorated.

  Therefore, in view of such points, the present invention makes it possible to reduce the length of the locking claw piece as much as possible so as not to take up a large amount of mounting space, and to form a resin part without using a slide mold. In addition, an object of the present invention is to provide a mounting claw structure for a resin part that improves the appearance of the resin part.

  In order to achieve the above object, according to the present invention, when a resin part such as an interior part of a vehicle is attached to the attached member side, the resin part is engaged with an engagement hole formed on the attached member side. A resin part mounting claw structure configured by elastically swinging a joint claw piece, wherein a bottomed concave groove portion is formed in a periphery of the base part of the engagement claw piece in the resin part, and the engagement The claw piece is configured to be elastically swingable.

  In the present invention configured as described above, a bottomed groove portion is formed in the periphery of the base portion of the engaging claw piece so that the engaging claw piece can be elastically swung. Even if the height dimension of the engagement piece base is set to be small, it can be easily formed so as to be elastically swingable. As a result, the length dimension of the locking claw piece is made as small as possible to reduce the mounting space. It is possible not to take too much, and because the undercut shape does not become due to the formation of the concave groove part, it is not necessary to use a costly slide type, and the concave groove part is on the front side of the resin part Since it does not appear, it greatly contributes to improving the appearance of resin parts.

Embodiments in the best mode for carrying out the present invention will be described below with reference to the drawings.
(Example 1)

  1 is a perspective view of a mounting claw structure for a resin component adopting an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG.

  1 to 3, the resin component 11 is a molded product such as PPC resin, for example, and an engagement claw piece 12 protrudes from an end portion of the resin component 11, for example.

  The engaging claw piece 12 includes an engaging piece base portion 14 projecting so as to stand up from the back surface side of the resin component 11 and a claw portion 13 integrally formed in a hook shape at the distal end portion of the engaging piece base portion 14. It is composed.

  On the back surface side of the resin component 11, a bottomed groove portion 15 is formed so as to be in contact with the root portion of the engagement piece base portion 14 or in a very close state, and due to the presence of the groove portion 15, The locking piece claw portion 12 is configured to be elastically swingable in the arrow C direction.

  The groove 15 in the present embodiment is positioned on the inward side of the resin component 11 with respect to the locking claw 12 in order to elastically swing the locking claw piece 12 inward of the resin component 11. The shape of the bottom 15a is an arcuate bottom.

  Further, the engaging claw piece 12 is inserted into the engaging hole 16a of the member 16 to be easily elastically rocked, and the engaging force of the engaging claw portion 12 after the insertion to the engaging hole 16a is set to a predetermined value. In order not to easily disengage the engagement relationship, the length dimension b of the groove 15 is set to be longer than the claw piece width a of the locking claw piece 12.

  For example, when the plate thickness t of the resin component 11 is 2 mm, the claw piece width a is 5 mm, and the length dimension b of the concave groove 15 is about 7 mm.

  When the width dimension w of the engagement piece base 14 is 1.5 mm, the depth dimension d of the groove 15 is about 0.5 mm, and the radius r of the arcuate bottom 15a is about 0.5 mm.

  And the nail | claw part 13 is protrudingly formed so that it may be located in the concave groove part 15 side in the engagement claw piece 12, ie, the elastic rocking | fluctuation side of the engagement claw piece 12, and in this Embodiment, It protrudes to the end side of the resin component 11.

  When comprised as mentioned above, when attaching the resin component 11 to the member 16 to be attached, the engaging claw piece 12 is inserted into the engaging hole 16a from the claw portion 13 side.

  In this insertion process, the claw portion 13 is formed in a bowl shape, and the bottomed concave groove portion 15 is formed in the resin part 1 in the peripheral portion of the engagement claw piece 12, so that the engagement hole 16a is inserted. Thus, the engaging claw piece 12 can be engaged in the engaging hole 16a while elastically swinging toward the concave groove 15 side.

  Then, the engaging claw piece 12 stops elastic swinging when the claw portion 13 passes through the engaging hole 16a, returns to the original position, and locks the claw portion 13 to the engaging hole 16a. Thus, the resin component 12 is attached to the member 16 to be attached.

  With such a configuration, the bottomed groove portion 15 is formed in the periphery of the base portion of the locking piece base portion 14 of the engaging claw piece 12 so that the engaging claw piece 12 can be elastically swung. Even if the height dimension of the engagement piece base portion 14 of the claw piece 12 is set to be small, it can be easily formed so as to be elastically swingable, and the length dimension of the locking claw piece 12 is made as small as possible. In addition, since the resin part 11 does not have an undercut shape due to the formation of the concave groove portion 15, it is not necessary to use a slide mold that increases the cost. Since the concave groove portion 15 does not appear on the surface side of the resin component 12, it greatly contributes to improving the appearance of the resin component 12.

  FIG. 4 shows another embodiment according to the present invention.

  According to FIG. 4, the shape of the recessed groove portion 15 is modified as compared with the above embodiment.

  That is, in the above embodiment. The recessed groove portion 15 is formed in a straight line parallel to the width direction of the locking claw piece 12 and surrounds the locking piece base portion 14, but in the embodiment shown in FIG. Is formed in a U shape so as to surround the thickness direction as well as the width direction of the locking claw piece 12, and the shape of the bottom portion 15 a of the recessed groove portion 15 is a flat bottom portion. ing.

  According to the embodiment shown in FIG. 4, since the recessed groove portion 15 surrounds in the width direction and the thickness direction of the locking claw piece 12 as compared with the above-described embodiment, It can be said that the structure is easy to elastically swing.

  As described above, according to the present invention, the bottomed groove portion is formed so as to surround the periphery of the base portion of the engaging claw piece, and the engaging claw piece is configured to be elastically swingable. Even if the height of the engaging piece base of the claw piece is set small, it can be easily formed so as to be elastically swingable, and the length of the locking claw piece is made as small as possible. It is possible not to take up much space, and because the undercut shape is not formed by the formation of the concave groove portion, it is not necessary to use a slide mold that increases the cost. Since it does not appear on the front side, it will greatly contribute to the improvement of the appearance of the resin part. Therefore, resin parts such as vehicle interior parts are attached to the attached member side using the engaging claw pieces. Suitable for resin parts mounting claw structure etc. .

It is a perspective view of the attachment claw structure of the resin component which employ | adopted one Embodiment of this invention. It is AA sectional drawing of FIG. It is a B arrow line view of FIG. It is a perspective view of the attachment structure of the resin component which employ | adopted other embodiment in this invention. It is a perspective view of the attachment structure of the resin component in an example of a prior art. It is a perspective view of the attachment structure of the resin component in the other example of a prior art. It is a perspective view of the attachment structure of the resin component in the further another example of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Resin part 12 Engagement claw piece 13 Claw part 14 Locking piece base 15 Recessed groove part 16 Mounted member 16a Engagement hole

Claims (1)

When resin parts such as vehicle interior parts are mounted on the mounted member side, an engagement claw piece that engages with an engagement hole formed on the mounted member side is provided on the resin part so as to be elastically swingable. The resin part mounting claw structure is characterized in that a bottomed recessed groove part is formed around the base part of the engagement claw piece in the resin part, and the engagement claw piece is configured to be elastically swingable. Resin part mounting claw structure Resin part mounting claw structure.

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