JP3205519B2 - Door trim waist structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a waist structure of a door trim of a vehicle.

[0002]

2. Description of the Related Art As shown in FIG. 7, a side window panel 31 in a door trim 33 of a vehicle 30 is
The structure of the entrance portion, that is, the waist portion 34, which enters, is manufactured by, for example, the steps shown in FIGS.

In this manufacturing process, first, as shown in FIG.
A skin 2 made of PVC (polyvinyl chloride) is combined with a surface 1a of a waist core material 1 made of a synthetic resin material, and is simultaneously formed by press working. In the skin 2 in this case, a skin bent portion 3 to be described later extends from the waist end portion 1b of the waist core material 1 in advance.

Next, using a jig (not shown), as shown in FIG. 9, an L-shaped core member made of PPC (polypropylene composite material) is applied to the back surface 1c of the waist end portion 1b of the waist core member 1. 4 is heat-welded. Thus, the vertical surface 4a of the L-shaped core 4 forms the inner seal mounting surface 5.

Next, as shown in FIG. 10, a primer is applied to the inner seal mounting surface 5 (L-shaped core material is made of PPC).
Then, after further applying an adhesive to the mounting surface 5, the surface bending portion 3 is bent using another jig (not shown) to be pressed and solidified on the mounting surface 5, and the surface bending portion 3 is formed. By covering the waist end portion 1b of the waist portion core material 1, the appearance of the end portion 1b is improved.

[0006] Next, as shown in FIG.
A nail 9 projecting from a core 8 embedded in the inner seal 7 is inserted into the hole 6 previously opened using a jig (not shown). It is configured to be fastened and fixed.

As a similar technique described above, Japanese Utility Model Laid-Open Publication No. 6-8
No.031, No. 6-42350 and No. 5-2
No. 2120 and the like.

[0008]

However, in the conventional door trim waist structure, a large number of manufacturing steps and special jigs are required, so that the equipment cost is increased, and the skin bend portion 3 is connected to the L-shaped core. In the step of bonding the material 4 to the inner seal mounting surface 5, a time period for drying the adhesive is required, and the number of steps such as the step of fixing the inner seal 7 by caulking the claws 9 is large, so that the production efficiency is poor and the improvement is improved. It has been demanded.

[0009] Further, a great deal of time is required, for example, it is necessary to strictly control the processing conditions in order to secure the adhesive strength in each step.

In addition, there is another problem that the amount of material input is large, for example, the iron plate core material 8 is inserted into the thickness of the inner seal 7 for reinforcement.

Accordingly, the present invention has been made in view of the above problems, and simplifies the manufacturing process, reduces material and equipment costs, and can be manufactured in a short time and easily. The purpose is to provide the structure.

[0012]

In order to achieve the above object, a first aspect of the present invention is to provide a waist core and a waist terminal covering the surface of the waist core. A skin formed by bending and holding the extended skin bent portion along the back surface of the waist core material, and heat-welded to the back surface of the waist core material through a plurality of locations of the skin bent portion. Characterized by comprising an L-shaped core material and an inner seal thermally welded to the seal mounting surface of the L-shaped core material.

[0013] This makes it possible to reduce the number of steps and the amount of jigs to be used, and also to facilitate manufacture.

A second aspect of the present invention is the door trim waist structure according to the first aspect, wherein the bent portion of the skin is locked by a locking claw formed on the L-shaped core material. And

Thus, a step of bending the bent portion of the skin to the back surface of the waist core while locking the bent portion of the skin with the locking claw, and a process of fitting the L-shaped core to the back surface of the waist core. And heat-welding the L-shaped core to the waist core.
It can be performed in the process.

A third aspect of the present invention is the waist structure of the door trim according to the first or second aspect, wherein a plurality of the L-shaped core members are protruded at positions facing the back surface of the waist core material. A protrusion which can be thermally welded is formed on the waist core material, and a plurality of insertion holes through which the protrusion can be inserted are formed at positions corresponding to the protrusions on the bent portion of the skin. And

Thus, the L-shaped core material can be directly heat-sealed to the back surface of the waist core material with the skin bent portion of the skin interposed between the back surface of the waist core material. .

A fourth aspect of the present invention is the door trim waist structure according to any one of the first to third aspects, wherein the inner seal is formed of a thermoplastic resin material having flexibility. And

This makes it possible to fix any part of the inner seal to the L-shaped core material by heat welding.

A fifth aspect of the present invention is the waist structure of the door trim according to any one of the first to third aspects, wherein the inner seal is formed by heat-welding a plurality of portions to the L-shaped core material. It is characterized by the following.

Thus, the inner seal can be reinforced by the rigidity of the L-shaped core material, so that it is not necessary to reinforce the inner seal alone.

[0022]

According to the present invention, the number of steps can be reduced by simplifying the manufacturing process, and the equipment cost can be reduced by reducing the number of jigs used. became. Furthermore, the inner seal is directly heat-welded to the L-shaped core to reinforce the inner seal with the rigidity of the L-shaped core, thereby eliminating the need to insert a steel sheet core into the inner seal as in the conventional case. The input material cost was reduced.

[0023]

1 to 6 show an embodiment of the present invention. FIG. 1 is a sectional view showing a waist structure of a door trim, and FIG. 2 is a plan view of a waist core material covered with a skin. FIG. 3 is a perspective view of the L-shaped core material, FIG. 4 is a view showing a process of assembling the waist portion, FIG. 5 is a cross-sectional view taken along line AA of FIG. 4, and FIG. Is B after assembly in FIG.
It is sectional drawing which followed the -B line.

The waist structure of the door trim of the present invention is as follows.
As shown in FIG. 1, a welding surface 13a of an L-shaped core material 11 is fixed to a back surface 1c of a waist core material 1 having a skin 2, and an inner seal 14 is fixed to a vertical surface 11a of the L-shaped core material 11. It is.

The waist core material 1 is a board material made of a synthetic resin material.
A skin 12 made of (polyvinyl chloride) is overlaid and integrally formed by a press method to form a door interior shape as shown in FIG.

As shown in FIG. 2, the skin 12 has a skin bent portion 15 extending forward from the waist end 1b of the waist core 1. As shown in FIG.

The skin bent portion 15 has one or two locking holes 16 capable of locking the locking claws 19 of the L-shaped core material 11 and a plurality of insertion holes through which the projections 13 of the L-shaped core material 11 can be inserted. A hole 17 is formed.

On the other hand, as shown in FIG. 3, a facing surface 18 corresponding to the back surface shape of the waist core 1 is formed on the L-shaped core 11 by using a PPC (polypropylene composite) material. The surface 18 has a bent portion 15 on the waist core 1 side.
A plurality of projections 13 are formed through the insertion hole 17 formed on the back surface 1c of the waist core material 1 to enable heat welding, and one end of the facing surface 18 is bent at the skin of the waist core material 1 side. One or two locking claws 19 that can be locked in the locking holes 16 formed in the portion 15 are formed.

At the other end of the L-shaped core material 11 other than the facing surface 15, a vertical surface 11a serving as a vertical inner seal mounting surface 5 is continuously provided.

The inner seal 14 having the lip 10 is integrally formed of a material having flexibility and heat welding property, for example, thermoplastic rubber, without inserting a core material as in the related art.

When assembling the door trim 33, as shown in FIG. 4, a locking claw 19 formed at one end of the L-shaped core material 11 is fixed to a locking hole 16 formed in the bent portion 15 of the skin as shown in FIG.
And is pressed in the direction of the arrow A, so that the bent portion 15 of the skin is formed on the facing surface 1 of the L-shaped core material 11.
The projection 13 formed on the L-shaped core material 11 enters the insertion hole 17 formed on the bent portion 15 of the skin into the direction indicated by the arrow C in FIG.

In this state, the L-shaped core 11 is further moved by the arrow B
By pressing in the direction, the bent portion 15 of the skin is
9 while being forced to the back surface 1c side of the waist core material 1 and adjusted to the position indicated by the two-dot chain line on the back surface 1c of the waist core material 1.

A cross section taken along the line AA of FIG. 4 in a state where the skin bending portion 15 is fitted to the back surface 1c of the waist core 1 is, as shown in FIG.
The welding surface 13a which is the upper surface of the
7 and abuts on the back surface 1c of the waist core material 1. As shown in FIG. 6, the cross section taken along the line BB of FIG. 16 while forcibly engaging the end of the bent portion 15 with the back surface 1 of the waist core 1.
Applied to c side.

As described above, the protrusion 13 is thermally welded to the back surface 1c of the waist core 1 while the skin bent portion 15 is interposed between the L-shaped core 11 and the waist core 1. . This completes the heat welding and fixing of the L-shaped core material 11 to the back surface 1c of the waist core material 1 via the skin bend portion 15.

Next, as shown in FIG. 1, the lip 10 of the inner seal 14 is aligned with the inner seal mounting surface 5 of the L-shaped core material 11 on the front side, and about 50 mm Fix by heat welding at the pitch. In this case, the heat sealing of the inner seal 14 may be performed from the vertical surface 11a side of the L-shaped core material 11.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a waist structure of a door trim according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where a surface of a waist core material is covered with a skin.

FIG. 3 is a perspective view of an L-shaped core material.

FIG. 4 is a view showing a process of assembling a waist portion.

FIG. 5 is a sectional view taken along the line AA after assembly in FIG. 4;

FIG. 6 is a sectional view taken along the line BB after the assembly in FIG. 4;

FIG. 7 is a view showing a waist portion of a door trim.

FIG. 8 is a view showing an assembling process of a conventional door trim waist structure.

FIG. 9 is a view showing the next assembling step of FIG. 8;

FIG. 10 is a view showing the next assembling step of FIG. 9;

FIG. 11 is a view showing the next assembling step of FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waist part core material 1a Waist part core material surface 1b Waist part core material waist terminal part 1c Waist part core material back surface 2,12 Skin 3,15 Skin bent part 4,11 L-shaped core material 5 Inner seal attachment surface 7, 14 Inner seal 10 Lip 13 Projection of L-shaped core material 16 Locking hole 17 Insertion hole 18 Opposing surface of L-shaped core material 19 Locking claw

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Sumimitsu Sakai 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd. (56) References Japanese Utility Model 6-61535 (JP, U) Japanese Utility Model 1 −144113 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60J 5/00 B60R 13/02

Claims (5)

(57) [Claims] 1. A waist core and a bent skin portion extending from a waist end of the waist core and covering the surface of the waist core along a back surface of the waist core. A skin that is bent and fixed, an L-shaped core material that penetrates a plurality of locations of the bent portion of the skin and is thermally welded to the back surface of the waist core material, and heat is applied to the inner seal mounting surface of the L-shaped core material. A waist portion structure of the door trim, comprising a welded inner seal. 2. A door trim waist structure according to claim 1, wherein the bent portion of the skin is locked by a locking claw formed on the L-shaped core material. Waist structure. 3. The waist structure of the door trim according to claim 1, wherein a plurality of the L-shaped core members are protruded at positions facing the back surface of the waist core material. A door trim characterized in that a protrusion that can be thermally welded to a core material is formed, and a plurality of insertion holes through which the protrusion can be inserted are opened at positions corresponding to the protrusions in the bent portion of the skin. Waist structure. 4. The door trim according to claim 1, wherein the inner seal is formed of a flexible thermoplastic resin material. 4. The door trim according to claim 1, wherein the inner seal is formed of a thermoplastic resin material having flexibility. Waist structure. 5. The waist structure of the door trim according to claim 1, wherein the inner seal is formed by heat-welding a plurality of portions to the L-shaped core material. The waist structure of the door trim.