JPH0354023A - Manufacture of door trim with grip - Google Patents

Abstract

PURPOSE:To eliminate the sticking work of a skin body in door trim with a grip by forming the skin body having the wall surface part of the door trim and a protruding part whose one end continues to the wall surface part, and foaming in a condition where an insert is inserted in the inside of the protruding part. CONSTITUTION:A skin body 1 of a door trim with a grip is composed of a wall surface part 2 forming the brace of the door trim, and a protruding part 3 finally forming the grip. At that time, a tip part 10 of the protruding part 3 is inserted in an insertion hole 9 of a sholder part 5 in the wall surface part 2, so that an arm rest part 6 in the wall surface part 2, a cavity 11 in a back surface, the shoulder part 5, and a cavity 14 in the back surface are connected in a loop state respectively. An insert 15 is inserted in the inside of the protruding part 3. Moreover the skin body 1 is mounted to a foaming mold 20, and the liquid raw material of hard urethane foam is injected in a cavity between both upper and lower molds of the foaming mold 20 and a core. Then the releasing from the mold is made after the hardening of the liquid raw material, and a product is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method of manufacturing a door trim integrally having a protruding grip for opening and closing a door.

(Prior Art) In many cases, a door trim of an automobile is provided with a grip for convenient opening and closing of the door.

Conventionally, grips have often been molded completely separately from the door trim and attached to the door trim and the car body using screws or the like when the door trim is attached to the car body. However, in recent years, there has been a high demand for door trims with an integrated grip structure for the purpose of unifying the designs of door trims and grips and eliminating gaps between the two. This type of door trim has a reinforcing panel that has approximately the same external shape as the door trim including the grip, and has a through hole or a recess in the grip part, and a reinforcing panel is installed separately in advance in the through hole or recess of the panel. It has been manufactured by attaching a molded frame-like body and attaching a skin material or a cushioning material to the surface of the reinforcing panel.

(Problems to be Solved by the Invention) In the conventional method for manufacturing a door trim with a grip, the grip and the wall portion of the door trim are integrated, and it is possible to manufacture a door trim with a grip that has a uniform design.

However, on the other hand, the above-mentioned manufacturing method has the drawback of being very time-consuming.

In other words, in the conventional manufacturing method, it is necessary to form the reinforcing panel, the frame, the door trim wall skin, and the grip part skin separately, and then paste them together. The pasting process requires manual labor and requires a large amount of man-hours.

Therefore, the present invention focuses on the drawbacks of the prior art, and provides a door trim with a grip in which the grip is integrally formed with the wall surface part, which makes it possible to unify the design, and which can be done with fewer manufacturing steps. The purpose is to propose a manufacturing method for.

(Means for Solving the Problems) Therefore, the features of the present invention for achieving the above-mentioned object include a door trim wall portion and a cylindrically protruding protrusion that is integrally continuous with the wall portion at one end. molding a skin body having
The other end of the protrusion of the skin is connected to the wall part, and the skin is mounted in a foam mold with an insert inserted inside the protrusion, and the back surface of the skin is filled with a hard urethane foam raw material. The method for producing a door trim with a grip involves foaming a rigid urethane foam raw material, curing it, and then removing it from the mold.

(Example) Specific examples of the present invention will be further described below.

FIG. 1 is a perspective view of a skin body used in a specific embodiment of the method for manufacturing a door trim with a grip according to the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG. 1. FIG. 3 and FIG. 4 are cross-sectional views of a foam molding type showing one step of a specific embodiment of the method for manufacturing a door trim with a grip according to the present invention. FIG. 5 is a cross-sectional view of a door trim with a grip manufactured according to a specific embodiment of the present invention.

In FIGS. 1 and 2, (1) is the skin of the dot trim with grip used in this embodiment.

The skin body (1) has a wall part (2) that forms the inner beam of the door trim and a protrusion part (3) that ultimately forms the grip.
There is more.

The wall portion (2) is formed with two longitudinally continuous protrusions, a shoulder portion (5) and an armrest portion (6).
A cloth (8) is adhered to the central vertical portion of the recess (7) sandwiched between the two. A protrusion insertion hole (9) is provided on the lower side surface of the shoulder portion (5) at a location corresponding to a protrusion (3) to be described later.

The protruding part (3) is the most characteristic member in the present invention, and is located at the outer end of the upper surface of the armrest part (6) of the wall part (2) and slightly biased to one side in the longitudinal direction. (6) is a cylindrical tube with a square cross section that is integrally and continuously provided.

The protrusion (3) is provided with a wavy shape on the side of the wall (2) for easy grip, and the tip (10) is tapered.

The inside of the protruding part (3) is hollow, and the tip part (10) is opened to communicate with the space (11) inside the armrest part (6) and open to the outside, that is, to the surface side of the skin body (1). It has a hole.

In this embodiment, the skin body (1) has a layered structure in which two layers, a skin layer (12) and a foam layer (13), are laminated.

The present invention does not limit the molding method and raw materials for the above-mentioned skin body in any way, but from the viewpoint of productivity, the most excellent method is powder molding of vinyl chloride resin or slush molding using plastisol.

Next, the tip (1) of the protrusion (3) of the above-mentioned skin body (1)
0) into the insertion hole (9) provided in the shoulder part (5), and hold the protrusion (3) into the armrest part (6).
, the back cavity (11), the shoulder part (5), and the back cavity (14) are connected in a loop shape.

In this state, the insert (15) is inserted into the protrusion (3).
). The inserter (15) is made of metal or synthetic resin, has considerable rigidity, has a gentle arc shape, and has a T-shaped stopper part (16) at one end. A similar stopper (17) is also provided at the other end.

Next, the above skin body (1) is mounted on a foam mold (20) (FIG. 3). The foaming mold (20) consists of an upper mold (21), a lower mold (22), and a core (23), and the core is inserted into the recess (7) between the armrest part (6) and the shoulder part (5). With (23) inserted, cut the epidermis (1) into the lower mold (22).
The upper mold (21) is mounted on the molding machine, and some cavities (24) are formed on the back surface of the skin body (1).

Then, a liquid raw material for rigid urethane foam is injected into the cavity (24). The rigid urethane foam raw material foams and enters into the cavity (24), between the insert (15) and the protrusion (3) of the skin body (1), and around the tip (10) of the protrusion (3), damaging the skin. The tip (10) of the protrusion (3) of the skin body (1) reinforces the body (1) to maintain its shape.
) is integrally fixed to the shoulder part (5).

At this time, the insert (45) is embedded in the hard urethane foam (FIG. 4). By demolding the rigid urethane foam raw material after curing, a door trim having an integrated grip can be obtained (FIG. 5).

In the above embodiment, only the rigid urethane foam raw material is injected into the cavity (24) of the mold (20), and the entire rigidity is generated only by the rigidity of the rigid urethane foam raw material.

However, it goes without saying that the present invention is not limited to this structure, and it is possible to mix a filler into the raw material of the hard urethane foam, or to install a reinforcing material such as glass cloth or glass mat in advance in the cavity. It is also effective to impregnate these reinforcing materials with a hard urethane foam raw material to generate rigidity.

(Effects) In the method of manufacturing a door trim with a grip of the present invention, in the step of forming the skin, the grip part is shaped as a protruding part with one end continuous to the wall surface part and the other end cut off, or They are connected in a loop shape, an insert is inserted into the protrusion, and then they are integrally connected using rigid urethane foam during foam molding.

Therefore, there is no need for the work of pasting the skin, which was necessary in the past, and it is possible to manufacture a door trim with a grip with an integrated design through a simple process.

[Brief explanation of drawings]

1 is a perspective view of a skin body used in a specific embodiment of the method for manufacturing a door trim with grip of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIGS. FIG. 4 is a sectional view of a foam molding die showing one step of a specific embodiment of the method for manufacturing a door trim with a grip of the present invention, and FIG. 5 is a door trim with a grip manufactured by a specific embodiment of the present invention. FIG. (1) - Skin body (2) - Wall part (3) - Protruding part (5) - Part of shoulder (6) - Armrest part (9) - Insertion hole (10) - Tip Part (15)... Insert (16) (17)... Stopper (20)... Foaming mold

Claims (1)

[Claims] 1. Molding a door trim wall part and a skin body having one end integrally continuous with the wall part and having a cylindrical protruding part, and inserting an insert into the protruding part of the skin body, and molding the skin body. A method for producing a door trim with a grip, characterized in that the body is mounted in a foam mold, the back surface of the skin body is filled with a hard urethane foam raw material, and the mold is removed after the hard urethane foam raw material is foamed and hardened.