JPH0530518U - Fastener mounting seat for resin molded products - Google Patents

Abstract

(57) [Summary] [Purpose] The fastener mounting seat is composed of the mounting seat body and the lid body, and the supporting piece for positioning the lid body is properly mounted to the mounting seat body without complicating the mold structure. The expansion of the foaming raw material into the mounting seat body and the bending of the lid due to the foaming pressure of the foaming raw material are suppressed, and the occurrence of irregularities on the surface of the resin molded product is reliably prevented. A lid 25 closes an opening on one end side of a mounting seat body 13 to be inserted into a foam base material of a door trim. A fastener mounting hole 23 is formed on the other end side of the mounting seat body 13 to which the fastener is mounted so that a part of the peripheral surface thereof contacts the inner peripheral surface of the mounting seat body 13. A support piece 33 for positioning and supporting the lid 25 from the inside on the inner peripheral surface of one end side of the mounting seat body 13 is radially inward from the contact portion side of the fastener mounting hole 23, and its inner end 34 is anti-contact with the fastener mounting hole 23. It is provided so as to project from the location side toward the support piece base end portion 32 side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a fastener mounting seat of a resin molded product.

[0002]

[Prior Art]

 Generally, in an automobile body assembly line, when assembling a door trim as an interior part to a door inner panel, a resin fastener mounting seat is provided on the back side of the door trim as disclosed in, for example, Japanese Utility Model Laid-Open No. 64-18614. The door trim is arranged and the fastener attached to the fastener mounting seat is inserted into the insertion hole of the door inner panel to assemble the door trim to the door inner panel.

By the way, there is a fastener mounting seat formed in a tubular shape. When attaching this fastener mounting seat to a resin molded product such as a door trim where the foam base material is integrally molded on the back surface of the skin material, insert one end of the fastener mounting seat into the foam base material as the molded product body. When the foaming raw material of the foaming base material penetrates inside the fastener mounting seat, the fastener mounting hole is closed, and the foaming pressure at the time of molding the foaming base material is locally reduced, and resin molding is performed. In order to prevent the occurrence of sink marks on the surface of the product, a lid is used to close the opening on one end side of the fastener mounting seat that is inserted into the foam base material.

[0004]

[Problems to be solved by the device]

 However, as described above, when the tubular fastener mounting seat is provided with a lid that closes the opening on one end side and is inserted into the foamed base material of the resin molded product, the fastener mounting seat is set in the molding die and placed in the mold. When the foam molding raw material is injected, the lid body bends due to the foaming pressure of the foam molding raw material, and the foam molding raw material cures in that state.Therefore, after the resin molded product is released from the mold, the lid body bends. However, there is a risk that the surface of the resin molded product may become uneven and the appearance may be impaired.

When the lid is provided as described above, the lid may be bent by the foaming pressure of the foam molding raw material. Therefore, a supporting piece is provided on the inner peripheral surface of the mounting seat body, and It is desirable that the lid is positioned and supported from the inside so as to surely prevent the foaming raw material from entering the inside of the mounting seat body and from being deformed by the foaming pressure of the foaming raw material.

However, if the support piece is provided on the inner peripheral surface of the mounting seat body, the fastener mounting hole and the surroundings of the fastener mounting hole become an undercut shape at the time of demolding after the molding of the fastener mounting seat, which makes it impossible to demold. It must be done and the mold structure becomes complicated.

The present invention has been made in view of the above points, and an object of the present invention is to configure a fastener mounting seat with a mounting seat body and a lid and to mount a support piece for positioning the lid. Proper mounting on the main body prevents the lid from bending due to the foaming pressure of the foaming raw material without complicating the mold structure, and ensures that the surface of the resin molded product does not have irregularities. Especially.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the solution means of the present invention is that one end is inserted into a foam base material of a resin molded product, and the other end of the fastener is used to assemble the resin molded product to an assembly through the fastener. In a resin-made fastener mounting seat to be mounted on a side, a tubular mounting seat body having one end side opening and a fastener mounting hole on the other end side, and a lid body closing the one end side opening of the mounting seat body. With. Further, the fastener mounting hole is formed so that a part of its peripheral surface contacts the inner peripheral surface of the mounting seat body. In addition, a support piece for positioning and supporting the lid from the inside is attached to the inner peripheral surface of one end of the mounting seat main body inward in the radial direction from the contact portion side of the fastener mounting hole, and its inner end is opposite to the fastener mounting hole. Project from the contact point side to the base end side of the support piece.

[0009]

With the above structure, in the present invention, the one end side opening of the tubular mounting seat body is closed by the lid, so that when the one end side is inserted into the foamed base material of the resin molded product, that is, the molding is performed. When the foam molding raw material is poured into the mold while it is set in the mold, the foam molding raw material is blocked by the lid and does not enter the inside of the mounting seat body. Further, at this time, since the lid body is positioned and supported from the inside by the support piece, the lid body does not bend even when the foaming pressure of the foam molding raw material acts on the lid body, and after the resin molded product is released from the mold. Occurrence of unevenness on the surface is surely prevented.

Further, since the support piece is provided so as to project inward in the radial direction from the fastener mounting hole contact portion side of the inner peripheral surface of the mounting seat body, the fastener mounting hole surrounding the fastener mounting hole is removed at the time of demolding after the fastener mounting seat is molded. Does not have an undercut shape, so the molded fastener mounting seat can be removed from the mold without providing a slide mold, and the mold structure is not complicated.

[0011]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 5 shows a vehicle door trim 1 as a resin molded product. The door trim 1 has a skin material 3 made of polyvinyl chloride or the like and a foam base material 5 made of a hard foam such as polyurethane integrally formed on the back surface thereof. It is formed by molding. Then, one end side 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 the fastener 9 is attached to the other end side of the fastener mounting seat 7. Then, the door trim 1 is assembled to the door inner panel 11 as an assembly body via the fastener 9.

As shown in FIGS. 1 to 4, the fastener mounting seat 7 is provided with a cylindrical mounting seat body 13 whose one end side (right end side in FIG. 2) is open. A wall portion 15 for forming a mounting hole is formed on the end side (the left end side in FIG. 2), and a large-diameter hole portion 17 and a small-diameter hole portion 19 are connected to the wall portion 15 by a communication hole portion 21. An attachment hole 23 is formed. The procedure for attaching the fastener 9 to the fastener mounting seat 7 is to insert the base portion of the fastener 9 into the large diameter hole portion 17 of the fastener mounting hole 23 and then slide the fastener 9 into the communication hole portion 21 to make the small diameter hole portion. Try to move to 19. Further, the fastener mounting hole 23 is formed such that a part of its peripheral surface 18 (large-diameter hole portion 17) contacts the inner peripheral surface 14 of the mounting seat body 13.

On the other hand, a disc-shaped lid 25 that closes the one end side opening is integrally connected to the one end side opening end of the mounting seat body 13 by a thin connecting band 27. 27 is used as a hinge portion so that the lid body 25 is fitted into the one end side opening of the mounting seat body 13. On the inner peripheral surface of the opening on one end side of the mounting seat body 13, an engaging concave portion 29 is formed at a position that divides the circumference into three equal parts, while on the outer periphery of the lid body 25, an engaging convex portion is formed. Similarly, 31 is formed at a position that divides the circumference into three equal parts, and the engagement convex portion 31 is engaged with the engagement concave portion 29 when closed.

Further, on the inner peripheral surface of one end side (the right end side in FIG. 2) of the mounting seat body 13, the support piece 33 is on the contact side of the fastener mounting hole 23 (on the large diameter hole 17 side), that is, on the inner peripheral surface 14. 1. The inner end 34 of the fastener mounting hole 23 projects radially inward from the side toward the support piece proximal end 32 side from the non-contact point side (small diameter hole portion 19 side) of the fastener mounting hole 23. As shown, the back surface of the lid 25 is brought into contact with the lid 25 so as to position and support the lid 25 from the inside.

As shown in FIG. 6, the fastener mounting seat 7 configured as described above has the insertion recess 3 of the mold 35 in a state in which the one end side opening of the mounting seat body 13 is closed by the lid 25. The fastener mounting hole 23 side is inserted into the mold 7 and set, and one end side is inserted into the foam base material 5 molded from the foam molding raw material injected into the mold.

As described above, in this embodiment, since the lid 25 is provided in the opening on the one end side of the mounting seat body 13 and the opening on the one end side is closed by the lid 25, the foam of the door trim 1 is foamed. When one end side is inserted into the base material 5, that is, when the foam molding raw material is injected into the mold while being set in the mold 35, the cover body prevents the foam molding raw material from entering the inside of the mounting seat body 13. be able to.

Further, at this time, since the lid body 25 is positioned and supported from the inside by the support piece 33, even if the foaming pressure of the foam molding raw material acts on the lid body 25, the lid body 25 flexes inwardly. Accordingly, it is possible to reliably prevent the deformation of the lid body 25 after the mold release of the automobile door trim 1 and the occurrence of unevenness on the surface of the automobile door trim 1.

Further, in the above-described embodiment, the support piece 33 is provided so as to project radially inward from the contact portion side (the large diameter hole portion 17 side) of the fastener mounting hole 23 on the inner peripheral surface of the mounting seat body 13 and supports the same. Since the inner end 34 of the piece 33 is located closer to the support piece base end portion 32 side than the non-contact point side (small diameter hole portion 19 side) of the fastener mounting hole 23, a hollow portion of the mounting seat body 13 is formed. If the cores 39 and 41 of the molding die are shaped as shown by the one-dot chain line and the two-dot chain line in FIG. 2, the fastener mounting hole 23 is not undercut around the fastener mounting seat 7 after being molded. As a result, the molded fastener mounting seat 7 can be removed from the mold without providing a slide mold, and the mold structure can be prevented from becoming complicated.

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, and may be a resin molded product other than an automobile.

[0021]

[Effect of the device]

 As described above, according to the present invention, the opening on one end side that is inserted into the foamed base material of the resin molded product is closed by the lid, so that the penetration of the foaming raw material into the mounting seat body is covered at the time of insertion. It can be prevented by the body. Furthermore, at this time, the support piece that positions and supports the lid from the inside eliminates the bending of the lid due to the foaming pressure of the foam molding raw material, and after the resin molded product is released from the mold, the bending of the lid is restored and the resin molded product is restored. It is possible to reliably prevent the occurrence of irregularities on the surface of the. Also, since the above-mentioned support piece is provided on the inner peripheral surface of the mounting seat main body on the side where the fastener mounting hole contacts, it is not necessary to make the undercut shape around the fastener mounting hole, and it is possible to remove the fastener mounting seat without the slide type. However, it is possible to prevent the mold structure from becoming complicated.

[Brief description of drawings]

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

FIG. 2 is a vertical cross-sectional side view of the fastener mounting seat with the lid opened.

FIG. 3 is a left side view of FIG.

FIG. 4 is a right side view of FIG.

FIG. 5 is a vertical 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 product) 5 ... Foam base material 7 ... Fastener mounting seat 9 ... Fastener 11 ... Door inner panel (assembly) 13 ... Mounting seat body 23 ... Fastener mounting hole 25 ... Lid body 32 ... Supporting piece base End 33 ... Support piece 34 ... Inner end of support piece

Claims (1)

[Scope of utility model registration request] 1. A fastener mounting seat made of resin, one end of which is inserted into a foamed base material of a resin molded product, and the fastener is mounted on the other end side of the resin molded product so that the resin molded product can be assembled to an assembly through a fastener. And a tubular mounting seat main body having an opening on one end side and a fastener mounting hole on the other end side, and a lid closing the opening on the one end side of the mounting seat main body. A support piece for positioning and supporting the lid from the inside is formed on the inner peripheral surface of one end of the mounting seat main body so that the peripheral surface contacts the inner peripheral surface of the mounting seat main body. A fastener mounting seat of a resin molded product, wherein the fastener mounting seat is formed so as to project inward in a radial direction from the side and an inner end of the fastener mounting hole projects from a side opposite to a contact point of the fastener mounting hole to a base end of the support piece.