JP2533741Y2 - Fastener mounting seat for resin molded products - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a fastener mounting seat for a resin molded product.

[0002]

2. Description of the Related Art Generally, in an automobile body assembly line,
When assembling a door trim as an interior component to a door inner panel, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 64-18614, a resin fastener mounting seat is disposed on the back side of the door trim, and the fastener mounting seat is attached to the resin. The door trim is assembled to the door inner panel by inserting the attached fastener into the insertion hole of the door inner panel.

Some fastener mounting seats are formed in a tubular shape. When attaching the fastener mounting seat to a resin molded product such as a door trim in which a foam base material is integrally formed on the back surface of the skin material, one end of the fastener mounting seat is inserted into a foam base material as a molded product body. Is performed, and the foaming material of the foamed base material enters the inside of the fastener mounting seat to close the fastener mounting hole, or the foaming pressure at the time of forming the foamed base material is locally reduced, so that the resin molded product is In order to prevent sink marks on the surface, an opening on one end side of a fastener mounting seat inserted into a foamed base material is closed with a lid.

[0004]

However, in the case where a lid for closing an opening at one end is provided in the tubular fastener mounting seat as described above and inserted into a foam base material of a resin molded product, the fastener mounting seat is formed by a molding die. When the foam molding material is injected into the mold with the foam molding material being set in the state, the lid is bent by the foaming pressure of the foam molding material, and the foam molding material is cured in that state. Later, the deflection of the lid body returned to its original state, and the surface of the resin molded product might have irregularities, which might impair the appearance.

In the case where the lid is provided in this manner, since the lid may be bent by the foaming pressure of the foam molding raw material, a support piece is provided on the inner peripheral surface of the mounting seat body, and the cover piece is used by the support piece. It is desirable that the body be positioned and supported from the inside so as to reliably prevent the intrusion of the foam molding material into the inside of the mounting seat body and the deformation of the lid due to the foaming pressure of the foam molding material.

However, if the support piece is provided on the inner peripheral surface of the mounting seat main body, the periphery of the fastener mounting hole becomes an undercut shape when the die is removed after the fastener mounting seat is formed, so that the die cannot be removed. And the mold structure becomes complicated.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to form a fastener mounting seat with a mounting seat body and a lid, and to provide a support piece for positioning the lid with a mounting seat. By properly attaching to the main body, it is possible to prevent the lid from flexing due to the foaming pressure of the foam molding raw material without complicating the mold structure, and to reliably prevent the occurrence of irregularities on the surface of the resin molded product. is there.

[0008]

Means for Solving the Problems In order to achieve the above object, a solution of the present invention is to insert one end of a resin molded product into a foamed base material and to attach the resin molded product to an assembly via a fastener. A resin-made fastener mounting seat to which the fastener is attached to the other end side for assembling, a tubular mounting seat body having an opening at one end side and a fastener mounting hole at the other end side, and an opening at the one end side of the mounting seat body; And a lid for closing the cover. Further, the fastener mounting hole is formed such that a part of its peripheral surface is in contact with the inner peripheral surface of the mounting seat body. Further, a support piece for positioning and supporting the lid body from the inside on one end side inner peripheral surface of the mounting seat body is radially inward from the fastener mounting hole contact point side and the inner end thereof is opposite to the fastener mounting hole. From the side of the support piece.

[0009]

According to the present invention, since one end opening of the tubular mounting seat body is closed by the lid in the present invention, when the one end is inserted into the foamed base material of the resin molded product, that is, the molding die When the foam molding material is injected into the mold in a state where it is set to, the foam molding material is blocked by the lid and does not enter the inside of the mounting seat body. Also, at this time, since the lid is positioned and supported from the inside by the support pieces, the lid does not bend even when the foaming pressure of the foam molding material acts on the lid, and after the resin molded article is released from the mold. The generation of the resulting surface irregularities is reliably prevented.

[0010] Further, since the support piece is protruded inward in the radial direction from the contact point of the fastener mounting hole on the inner peripheral surface of the mounting seat main body, the periphery of the fastener mounting hole becomes under when the mold is released after the fastener mounting seat is formed. Since the fastener mounting seat is not formed in a cut shape and thus the molded fastener mounting seat can be removed without providing a slide mold, the mold structure does not become complicated.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 5 shows an automobile door trim 1 as a resin molded product. In the door trim 1, a foam base material 5 made of a rigid foam such as polyurethane is integrally formed on the back surface of a skin material 3 made of polyvinyl chloride or the like. It is formed and formed.
One end of the resin fastener mounting seat 7 according to the embodiment of the present invention is inserted into a required portion of the foam base material 5 of the door trim 1, and a fastener 9 is mounted on the other end of the fastener mounting seat 7. Thus, the door trim 1 is assembled via a fastener 9 to a door inner panel 11 as an assembly.

As shown in FIGS. 1 to 4, the fastener mounting seat 7 includes a cylindrical mounting seat body 13 having an open end at the one end side (the right end side in FIG. 2).
On the other end side (the left end side in FIG. 2), a wall portion 15 for forming a mounting hole is formed, and the wall portion 15 has a large-diameter hole portion 17 and a small-diameter hole portion 1.
A fastener mounting hole 23 is formed, which communicates 9 with a communication hole 21. The procedure for attaching the fastener 9 to the fastener mounting seat 7 is as follows. After the base of the fastener 9 is inserted into the large-diameter hole 17 of the fastener mounting hole 23, the fastener 9 is slid through the communication hole 21 to reduce the small-diameter hole 19. To be moved to Further, the fastener mounting hole 23 has a part on its peripheral surface 18 (large-diameter hole portion 17).
Are formed so as to contact the inner peripheral surface 14 of the mounting seat body 13.

On the other hand, a disc-shaped lid 25 for closing the opening at one end is integrally connected to an opening end at one end of the mounting seat main body 13 by a thin connecting band 27. 2
7 is bent as a hinge, and the lid 25 is attached to the mounting seat body 13.
Is fitted into an opening on one end side. In addition, an engagement recess 2 is provided on the inner peripheral surface of the one end side
9 is formed at a position that divides the circumference into three equal parts, while an engaging projection 31 is formed on the outer periphery of the lid 25 at a position that also divides the circumference into three equal parts. The projection 31 is engaged with the engagement recess 29.

Further, on the inner peripheral surface at one end side (right end side in FIG. 2) of the mounting seat main body 13, a support piece 33 is provided at the contact point side of the fastener mounting hole 23 (the large-diameter hole portion 17 side), that is, at the inner peripheral surface 1.
4, a radially inward direction and an inner end 34 projecting from the opposite side of the fastener mounting hole 23 to the support piece base end 32 side from the non-contact point side (small diameter hole 19 side). As shown, the back surface of the lid 25 is abutted to position and support the lid 25 from the inside.

The fastener mounting seat 7 configured as described above is inserted into the insertion recess 37 of the mold 35 with one end opening of the mounting seat body 13 closed by the lid 25 as shown in FIG. One end side is inserted into the foam base material 5 which is set by inserting the fastener mounting hole 23 side and formed by the foam molding raw material injected into the mold.

As described above, in this embodiment, the mounting seat body 1
Since the lid 25 is provided at one end of the door trim 3 and the one end of the door trim is closed by the lid 25,
When one end side is inserted into the foam base material 5, that is, when the foam molding material is injected into the mold while being set in the mold 35, the penetration of the foam molding material into the inside of the mounting seat body 13 is performed by the lid. Can be prevented.

At this time, since the lid 25 is positioned and supported from the inside by the support pieces 33, the lid 25
The lid 25 does not bend inward even when the foaming pressure of the foaming material acts on the door trim 1.
After the mold release, the bending of the lid 25 returns to its original state, and the occurrence of irregularities on the surface of the vehicle door trim 1 can be reliably prevented.

Further, in the above embodiment, the support piece 33 is provided so as to protrude radially inward from the side of the fastener mounting hole 23 on the inner peripheral surface of the mounting seat body 13 (the large-diameter hole 17 side). Since the inner end 34 of the mounting 33 is located closer to the support piece base end 32 than the non-contact portion side (small diameter hole 19 side) of the fastener mounting hole 23, the mold forming the hollow portion of the mounting seat body 13 is formed. If the cores 39 and 41 are formed as shown by the alternate long and short dash lines in FIG.
The periphery of the fastener mounting hole 23 does not have an undercut shape when the mold is released after molding, so that the molded fastener mounting seat 7 can be released without providing a slide die, and the structure of the die is prevented from becoming complicated. be able to.

In the above embodiment, the case where the resin molded product is the door trim 1 has been described, but it may be an instrument panel or the like, or may be a resin molded product other than an automobile.

[0021]

[Effects of the Invention] As described above, according to the present invention,
Since the opening at one end inserted into the foamed base material of the resin molded product is closed by the lid, it is possible to prevent the foaming raw material from entering the inside of the mounting seat body at the time of insertion.
Further, at this time, the support piece for positioning and supporting the lid from the inside eliminates the bending of the lid due to the foaming pressure of the foam molding raw material,
After the resin molded article is released from the mold, it is possible to reliably prevent the deformation of the lid from returning to the original state and the occurrence of irregularities on the surface of the resin molded article. In addition, since the support piece is provided on the inner peripheral surface of the mounting seat body on the side where the fastener mounting hole contacts, the periphery of the fastener mounting hole does not need to be undercut, and the fastener mounting seat can be removed without a slide type. Thus, the complication of the mold structure can be prevented.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a fastener mounting seat with a lid closed.

FIG. 2 is a vertical sectional side view of a fastener mounting seat with a cover opened.

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a right side view of FIG. 2;

FIG. 5 is a longitudinal sectional side view of a door trim in which a fastener mounting seat is inserted.

FIG. 6 is a view showing a state in which a fastener mounting seat is set in a mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Door trim (resin molded article) 5 ... Foam base material 7 ... Fastener mounting seat 9 ... Fastener 11 ... Door inner panel (assembly body) 13 ... Mounting seat body 23 ... Fastener mounting hole 25 ... Lid 32 ... Support piece base End 33: Support piece 34: Inner end of support piece

Claims (1)

(57) [Scope of request for utility model registration] 1. A resin fastener mounting seat in which one end is inserted into a foam base material of a resin molded product, and the fastener is attached to the other end of the resin molded product via a fastener. A cylindrical mounting seat body having an opening at one end and a fastener mounting hole at the other end; and a lid closing the opening at the one end of the mounting seat body. A supporting piece for positioning and supporting the lid from the inside is formed on the inner peripheral surface of one end side of the mounting seat main body so as to contact the inner peripheral surface of the mounting seat main body. A fastener mounting seat for a resin molded product, wherein the fastener mounting seat projects radially inward from the side and the inner end thereof protrudes from the opposite side of the fastener mounting hole to the base end of the support piece.