JP2022016782A - Superimposed interior part and cushion member for superimposed interior part - Google Patents

Abstract

To achieve both increase of a push-in amount and improvement of designability.SOLUTION: A superimposed interior part includes a base material 11, a skin material 12 covering the base material 11, and a cushion member 13 which is formed of a soft resin material and is provided between the base material 11 and the skin material 12. An interior part 10 is formed by superimposing the base material 11, the cushion member 13 and the skin material 12. The cushion member 13 has base parts 20 having contact surfaces 21 in contact with the skin material 12 and a plurality of through holes 22, and projections 30 projecting toward the base material 11 from each edge of the through holes 22.SELECTED DRAWING: Figure 1

Description

The present invention relates to superposition interior parts and cushion members for superposition interior parts.

Patent Document 1 discloses an interior component including a first member and a second member having a plurality of tapered protrusions that project toward the first member and are flexible and deformable.
According to such an interior component, when the second member is pushed toward the first member, a part or the whole of the plurality of protrusions comes into contact with the first member and is bent and deformed. Therefore, it is possible to present the user with a tactile sensation similar to that of an interior part in which a foam material such as urethane foam is embedded.

International Publication No. 2013/132677

By the way, if the length of the protrusion is increased in order to increase the pushing amount of the second member, the following inconvenience may occur. That is, as described above, since the protrusions are tapered, when the length of the protrusions is increased, the base end portion of the protrusions becomes thicker accordingly. Therefore, the difference in thickness between the base end portion of the protrusion and the other portion of the skin portion of the second member becomes large, and the difference in the amount of heat shrinkage becomes large due to this. As a result, molding defects due to heat shrinkage, so-called sink marks, are likely to occur on the skin portion of the second member, which may impair the design.

On the other hand, if the occurrence of sink marks is suppressed by thickening the skin portion, another problem such as a hard tactile sensation when pushing the second member arises.
The problem of sink marks described above is not limited to the tapered protrusions, and even if the protrusions have a certain thickness, the protrusions are lengthened in order to increase the pushing amount of the second member. If the protrusion is thickened accordingly, it will occur in the same manner.

An object of the present invention is to provide a lap interior part and a cushion member for the lap interior part, which can achieve both an increase in the pushing amount and an improvement in design.

The superposed interior component for achieving the above object includes a base material, a skin material covering the base material, and a cushion member provided between the base material and the skin material, and the base material, the base material. The cushion member and the skin material are overlapped with each other. The cushion member has a contact surface in contact with the skin material, a base having a plurality of through holes, and protrusions protruding from each edge of the through holes toward the base material.

Further, the cushion member for the laminated interior parts for achieving the above object is provided between the base material and the skin material covering the base material, and is overlapped with the base material and the skin material. Consists of superposed interior parts. The cushion member has a contact surface in contact with the skin material, a base having a plurality of through holes, and a protrusion protruding from the edge of the through holes toward the base material.

Sectional drawing of interior parts about one Embodiment of superposition interior parts. The perspective view of the cushion member of the same embodiment. The plan view of the cushion member of the same embodiment. FIG. 3 is a cross-sectional view of a mold for molding the cushion member of the same embodiment. The perspective view which shows the cushion member of the same embodiment enlarged about one through hole. The perspective view which shows the cushion member of the same embodiment enlarged about one through hole.

Hereinafter, one embodiment will be described with reference to FIGS. 1 to 6. Note that FIG. 1 is a cross-sectional view taken along the line 1-1 of FIG.
As shown in FIG. 1, the laminated interior component (hereinafter referred to as interior component 10) is, for example, an automobile door trim, and is a base material 11, a thin plate-shaped skin material 12 covering the base material 11, and the base material 11 and the skin. It is provided with a cushion member 13 provided between the material 12 and the material 12. The interior component 10 is formed by superimposing the base material 11, the cushion member 13, and the skin material 12.

The base material 11 is made of a hard resin material such as polypropylene.
The skin material 12 is formed of a soft resin material such as soft polyvinyl chloride.
The cushion member 13 is made of a soft resin material such as soft polyvinyl chloride.

As shown in FIGS. 1 to 3, the cushion member 13 has a plate-shaped base portion 20 having a contact surface 21 in contact with the skin material 12 and a plurality of through holes 22, and the base material 11 from the edges of the through holes 22. It has a plurality of protrusions 30 that project toward it, and is integrally molded. The base material 11 of the present embodiment has a certain thickness.

As shown in FIGS. 2 and 3, each through hole 22 has a substantially regular triangular shape.
As shown in FIG. 3, the through holes 22 are provided in the same posture in a plan view and at regular intervals from each other.

As shown in FIGS. 1 to 3, the protrusion direction of each protrusion 30 is inclined with respect to the base 20. The base end portion of the protrusion 30 projects inward of the through hole 22 from the inner peripheral surface of the through hole 22.
As shown in FIG. 1, the entire protrusion 30 is in a region V in which the through hole 22 in which the protrusion 30 is provided is virtually extended along a direction orthogonal to the contact surface 21 (vertical direction in FIG. 1). Is located in.

As shown in FIGS. 2 and 3, each protrusion 30 has a quadrangular pyramid shape with rounded corners.
In the present embodiment, three protrusions 30 are provided at three positions corresponding to each apex of the equilateral triangle on the edge of the through hole 22.

The three protrusions 30 extend along different sides of the through hole 22. That is, the three protrusions 30 project in different directions from each other and are provided at intervals from each other.

As shown in FIG. 1, the contact surface 21 of the base 20 of the cushion member 13 is in contact with the skin material 12 in a state where no external force acts on the skin material 12. Further, in this state, the tip of each protrusion 30 is in contact with the base material 11.

As shown in FIG. 4, in the present embodiment, the contact surface 21 of the base 20 of the cushion member 13 is molded by the molding surface 41 of the fixed mold 40, and the contact surface 21 of the base 20 is molded by the molding surface 51 of the movable mold 50. The surface on the opposite side, that is, the facing surface 23 facing the base material 11, is formed.

In this case, the inward facing portion 31 of each protrusion 30 that is closer to the axis of the through hole 22 is undercut on the molding surface 51 of the movable mold 50.
Therefore, as shown by the alternate long and short dash line in FIG. 5, in the present embodiment, the inward facing portion 31 is formed by the convex portion 42 of the molding surface 41 of the fixed mold 40 by using the through hole 22 of the base portion 20. Mold. That is, the protrusion 30 is divided and molded by the fixed mold 40 and the movable mold 50.

As shown in FIG. 6, in the cushion member 13 thus formed, a parting line 24 extending along the circumferential direction of the through hole 22 is formed at the boundary portion between the edge of the through hole 22 and the facing surface 23. Will be done.

Further, in the cushion member 13, a parting extending along the protrusion direction of the protrusion 30 is provided at the boundary portion between the inward facing portion 31 and the outward facing portion 32 on the side of each protrusion 30 approaching the axis of the through hole 22. The line 33 is formed.

Next, the action and effect of this embodiment will be described.
(1) The cushion member 13 has a base portion 20 having a contact surface 21 in contact with the skin material 12 and a plurality of through holes 22, and a protrusion 30 protruding from each edge of the through holes 22 toward the base material 11. ..

According to such a configuration, when the skin material 12 is pushed toward the base material 11, a plurality of protrusions 30 protruding from the base 20 of the cushion member 13 come into contact with the base material 11 and are bent and deformed. Therefore, it is possible to present the user with a tactile sensation similar to that of an interior part in which a foam material such as urethane foam is embedded.

Further, since it is not necessary to provide the protrusions 30 on the skin material 12 itself, it is possible to avoid the problem of molding defects of the skin material 12 caused by the molding of the protrusions 30.
Further, since the thickness of the skin material 12 can be reduced, it is possible to prevent the skin material 12 from becoming hard to the touch when pushed.

Further, on the molding surface 51 of the movable mold 50, the portion 31 facing the inside of the protrusion 30 which is an undercut is molded by the convex portion 42 of the molding surface 41 of the fixed mold 40 by using the through hole 22 of the base portion 20. Can be done. That is, the protrusion 30 can be divided and molded by the fixed mold 40 and the movable mold 50.

Therefore, it is possible to achieve both an increase in the pushing amount and an improvement in the design.
(2) A plurality of protrusions 30 are provided on the edge of the through hole 22.
According to such a configuration, since a plurality of protrusions 30 are provided on the edge of one through hole 22, the number of protrusions 30 per unit area of the base 20 can be increased. Therefore, it is possible to reduce the portion where the protrusion 30 is not formed, and it is possible to suppress the variation in tactile sensation depending on the position.

(3) Of the plurality of through holes 22, a plurality of protrusions 30 provided on the edge of a single through hole 22 project in different directions from each other.
According to such a configuration, it is possible to suppress the variation in tactile sensation depending on the position by making the inclination direction of each protrusion 30 different.

(4) A plurality of through holes 22 are provided at regular intervals from each other.
According to such a configuration, it is possible to suppress the number of protrusions 30 from varying depending on the position. Therefore, it is possible to suppress variations in tactile sensation depending on the position.

<Change example>
The above embodiment may be modified and implemented as follows, for example. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

The through holes 22 may be provided at unequal intervals.
The shape of the through hole 22 is not limited to a substantially equilateral triangle, and may be another polygon such as a quadrangle or a pentagon, or may be a circle.

The number of protrusions 30 protruding from the edge of the through hole 22 is not limited to three, and may be one, two, or four or more.
-The cushion member 13 is not limited to that made of a soft resin material such as soft polyvinyl chloride. In short, the cushion member 13 may be a flexible material or may be made of a hard resin material.

The superposed interior parts and the cushion member 13 for the superposed interior parts according to the present invention are not limited to those applied to automobile door trims, but are other interior parts such as automobile dashboards, console boxes, and instrument panels. Can be applied to.

10 ... Interior parts 11 ... Base material 12 ... Skin material 13 ... Cushion member 20 ... Base 21 ... Contact surface 22 ... Through hole 23 ... Opposing surface 24 ... Parting line 30 ... Protrusion 31 ... Inward facing part 32 ... outward facing Part 33 ... Parting line 40 ... Fixed mold 41 ... Molding surface 42 ... Convex part 50 ... Movable mold 51 ... Molding surface

Claims (5)

A base material, a skin material covering the base material, and a cushion member provided between the base material and the skin material are provided, and the base material, the cushion member, and the skin material are superposed on each other. In the overlapping interior parts
The cushion member is
A contact surface in contact with the skin material and a base having a plurality of through holes,
It has protrusions that project from each edge of the through hole toward the substrate.
Quantum superposition interior parts. A plurality of the protrusions are provided on the edge of the through hole.
The superposed interior part according to claim 1. A plurality of the protrusions provided on the edge of a single through hole among the plurality of through holes project in different directions from each other.
The superposed interior part according to claim 2. A plurality of the through holes are provided at regular intervals from each other.
The superposed interior part according to any one of claims 1 to 3. A cushion member provided between a base material and a skin material covering the base material, which constitutes a superposed interior component by being superposed on the base material and the skin material.
A contact surface in contact with the skin material and a base having a plurality of through holes,
It has a protrusion that projects from the edge of the through hole toward the substrate.
Cushion member for superposition interior parts.

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