JPH0521777B2 - - Google Patents

Description

[Detailed Description of the Invention] <<Field of the Invention>> This invention relates to automobile interior parts such as door trims, rear corners, and rear pillars, and in particular, to improve the design by attaching fabric sheets to appropriate positions on the surface of the trim body. Regarding automotive interior parts.

《Prior art and its problems》 Recently, in order to improve the comfort inside the car interior, materials for interior parts such as car door trims have been upgraded, or resin sheets have been used as surface materials, and cloth and carpets have been used as cover materials. Attempts have been made to improve the appearance and design by attaching fabric sheets such as .

FIG. 11 is a partially cutaway perspective view showing a conventional automobile door trim. This door trim 1 includes a core material 2 that is trim-cut to approximately match the shape of a door inner panel (not shown), and a surface of this core material 2. A door trim main body 4 is constructed from a skin material 3 coated on the skin material 3, and a cushion material 5 such as low melting point urethane foam or polypropylene foam is further applied to this skin material 3 to provide cushioning properties to the door trim 1.
is laminated on the back. A fabric sheet 6 is attached to the upper part of the door trim body 4 to enhance the design. Although this fabric sheet 6 is not shown, it is adhered to the door trim body 4 side via an adhesive, but in order to cleanly treat the peripheral end portion 6a of this fabric sheet 6,
A circumferential groove 7 is provided in the door trim body 4, and this circumferential groove 7 is formed along the left and right sides and lower circumferential edge end portions 6a of the fabric sheet 6, and these circumferential edge end portions 6a are accommodated in the circumferential groove 7. It has a fixed configuration.

In this case, as shown in FIG. 12, a protrusion 8a is provided on the crimping die 8 along the circumferential groove 7, and this protrusion 8a enters into the circumferential groove 7 and presses the circumferential end 6a of the fabric sheet 6. is firmly adhered to the inner wall surface of the circumferential groove 7.

However, in a product in which the ends of the fabric sheet 6 were treated in this manner, a gap was generated as shown by A in FIG. 12, resulting in a significant deterioration in the appearance and design. Furthermore, there was a drawback that dirt and the like easily entered the gap A, making dirt more noticeable.

For this purpose, the groove width of the circumferential groove 7 is set small,
Although it is preferable to make the gap A as small as possible, it is highly restricted by the dimensions of the convex portion 8a of the crimping die 8 and the degree of freedom of molding the core material 2, so currently it is difficult to set the gap A to 2 mm or less. It was impossible.

<<Object of the invention>> The present invention has been made in view of the above-mentioned circumstances, and
An object of the present invention is to provide an automobile interior part of a type in which the peripheral end of a fabric sheet attached to the surface of a trim body is inserted and fixed into a circumferential groove provided on the trim body side. Even if the width is set relatively wide to increase the degree of design freedom, it is necessary to prevent gaps from appearing in this circumferential groove.
The object of the present invention is to provide interior parts for automobiles with improved appearance design.

<Structure and Effects of the Invention> In order to achieve the above object, the present invention includes a fabric sheet attached to an appropriate position on the surface of a trim body that is formed to be approximately equal to the surface shape of an inner panel, and a fabric sheet attached to the periphery of the fabric sheet. In an automobile interior part in which a terminal is inserted and fixed into a circumferential groove provided in a trim body, the cloth sheet has a cushion material laminated and integrated on the back side, and the total thickness of the cloth sheet and cushion material is By setting the width of the circumferential groove to be larger than the width of the circumferential groove, when the fabric sheet is inserted into the circumferential groove, the cushion material becomes compressed, and the elastic restoring force of the cushion material makes the fabric sheet elastic in the circumferential groove. It is characterized by being connected and held.

That is, according to the above structure, a cushion material having an elastic action is laminated and integrated on the back side of the fabric sheet attached to an appropriate position on the surface of the trim body, and the total thickness of the fabric sheet and this cushion material is equal to the groove of the circumferential groove. Since the width is set slightly larger than the width, when the peripheral end of these fabric sheets is inserted and fixed into the circumferential groove provided on the trim body side, the elastic restoring force of the cushion material causes the fabric sheet and the cushion material to tighten around the periphery. Since it is tightly inserted into the groove, there is no gap in the circumferential groove as in the conventional case, which significantly improves the appearance and design, and prevents dirt and dust from accumulating in the gap. , it has the effect of being less likely to get dirty.

Furthermore, in this way, even if the groove width of the circumferential groove is set relatively large, there will be no deterioration in appearance, so there will be no restrictions on the dimensions of the crimping die or the molded shape of the core material, and mold management will be easier. becomes easier,
The degree of freedom in shaping the product is dramatically improved, and even if the insertion position of the crimp-type protrusion that is inserted into the circumferential groove and adheres the fabric sheet to the trim side varies slightly within the circumferential groove, the cushioning material can be easily Since it can be absorbed by the thickness, there is an advantage that such strict precision is not required in the mold accuracy of the crimping die or the positioning between the circumferential groove and the convex part of the crimping die.

<<Description of Embodiments>> Hereinafter, one embodiment of the automobile interior parts according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a perspective view showing an automobile door trim to which the present invention is applied, Fig. 2 is a sectional view of the main part of the same door trim, Fig. 3 is a sectional view of the main part showing another embodiment of the same door trim, and Figs. FIG. 10 is a cross-sectional view illustrating the manufacturing process of the door trim.

Referring to FIGS. 1 and 2, the general structure of the automotive door trim of the present invention will be explained. First, the door trim 10 consists of a molded core material 1 that is molded to approximately match the surface shape of a door inner panel (not shown).
1, and a skin material 12 which covers the surface of the molded core material 11 and whose peripheral end is folded back and fixed to the back side of the molded core material 11. More specifically, the molded core material 11 used is a wood fiberboard impregnated with a resin binder that is molded into a desired shape by hot press molding.

In addition, the skin material 12 is made of polypropylene foam, in order to provide cushioning properties to the back surface of the PVC sheet 13.
A foamed material 14 such as polyethylene foam is laminated with a molded core material 11 and a skin material 12.
The two are integrated by vacuum forming, which will be described later. For convenience of explanation, the door trim body 15 is a product in which the molded core material 11 and the skin material 12 are integrated.
The following explanation is given as follows.

Furthermore, a cloth sheet 16 such as cloth is attached to the upper part of the door trim body 15, and the outer skin material 12 and this cloth sheet 16 are made different in color and texture to provide contrast and improve the appearance design. making it excellent.

Next, the end treatment at the peripheral edges of the fabric sheet 16 will be explained. First, the door trim body 15 is provided with circumferential grooves 17 along the left and right sides and the lower peripheral edges of the fabric sheet 16. The peripheral end 16a of the fabric sheet 16 is located within the peripheral groove 17.
However, in the present invention, a cushion material 18 such as urethane foam with elastic restoring force is laminated and integrated on the back side of the fabric sheet 16, and the fabric sheet 16 is inserted and fixed. The sum of the thickness of the sheet 16 and the thickness of the cushion material 18 is set to be slightly larger than the groove width of the circumferential groove 17.

That is, since the total thickness a of the fabric sheet 16 and the cushion material 18 is set larger than the groove width b of the circumferential groove 17, the end 16a of the fabric sheet 16
In addition, the end 18a of the cushion material 18 is connected to the circumferential groove 17.
It is loaded tightly inside. Therefore, conventionally, the circumferential groove 17
It is possible to prevent as much as possible the occurrence of gaps that would otherwise occur in the past, thereby significantly improving the appearance and design quality, and also effectively solving the conventional problem of easy entry of dust, dirt, etc. into the gaps, making them easy to get dirty.

Furthermore, in the present application, since the sum a of the thicknesses of the fabric sheet 16 and the cushion material 18 can be selected as appropriate, the circumferential width b of the circumferential groove 17 can be set relatively wide accordingly, and the molded core material 11 The degree of freedom in molding can be relaxed, and by setting the cushion material 18 in the upper part that is relatively easily touched by passengers, the cushioning properties of this part can be doubled, and a product with a softer feel can be provided. There are advantages such as

In addition, in the above embodiment, the upper edge of the fabric sheet 16 is aligned with the upper edge of the door trim body 15, but although not shown, the circumferential groove is formed into a loop shape. established,
The fabric sheet may be set approximately at the center of the surface of the door trim body, and the outer peripheral end thereof may be inserted and fixed into the circumferential groove.

Further, as shown in FIG. 3, the present invention may be applied to a simple door trim based on a resin molded body 19. In this embodiment as well, the resin molded body 19 is provided with a circumferential groove 17', and A peripheral end 16' of a laminate of a fabric sheet 16' and a cushion material 18' is attached to an appropriate location on the surface of the body 19.
A, 18'a can be expected to be densely loaded into the circumferential groove 17' to achieve similar effects.

Although each of the above embodiments relates to an automobile door trim, the present invention is not limited to door trims, but can be applied to general automobile interior parts such as rear corners, various pillars, rear side trims, and rear parcel shelves. It goes without saying that it can be done.

Next, the manufacturing process of the automobile door trim 10 shown in the first embodiment will be explained based on FIGS. 4 to 10.

The manufacturing process of this automobile door trim 10 is roughly divided into the following three steps.

(1) Molding process of molded core material 11.

(2) A step of integrating the molded core material 11 and the skin material 12.

(3) Fabric sheet 16 for door trim body 15
crimping process.

(1) Molding process of molded core material 11.

First, as the material for the molded core material 11, a wood fiberboard is used, which is a mixture of 70% wood fiber and 30% resin binder. The resin binder contains a thermosetting resin such as a phenol resin or a urea resin, and a thermoplastic resin such as an acrylic resin, and the wood fiber contains a large amount of cotton yarn to prevent tearing. ing. Then, this wood fiber board M is placed on the upper surface of the lower mold 20 for hot press molding, as shown in FIG. The mold surface 20a of this lower mold 20 for hot press molding is set in a shape that gives the molding core material 11 curved parts such as an armrest part and a door waist part, and can be freely raised and lowered with respect to the lower mold 20 for hot press molding. An upper mold 21 is supported and fixed to an upper table 23. Note that the mold surface of this upper mold 21 for hot press molding is one side 20a of the lower mold 20.
It has almost the same shape as . Then, the upper mold table 22
As shown in FIG. 5, as shown in FIG. molded. That is, a slide bar 23 is provided on the upper table 22, and this slide bar 23
is fixed to the cylinder rod 24a of the hydraulic cylinder 24, and the slide bar 23 slides due to the operation of the hydraulic cylinder 24, and the molded core material 11
The undercut portion 11c is shaped.

After the upper table is raised by the operation of a lifting device (not shown), the lower mold 2 for hot press molding is placed.
The molded core material 11 molded from scratch is taken out, and if desired, a mounting fitting 25 such as a bracket as shown in FIG. 6 is attached to complete the molding of the molded core material 11 and the subassembly.

(2) A step of integrating the molded core material 11 and the skin material 12.

First, the molding core material 11 molded into the desired shape in the above step is positioned and set on the upper surface of the lower mold 30 for vacuum molding, and the skin material 12 is installed above this molding core material (see FIG. 6). ). This skin material 1
2 is heated and softened by the heater device 31, and then
The core material 1 is formed by the operation of a slide mechanism (not shown).
1. Furthermore, this skin material 12
The peripheral edge of is held horizontally by the clamping device 32,
Moreover, it is held with the foam 14 side facing the molded core material 11 side.

Further, an upper mold 33 for vacuum forming is located above this skin material 12, and these upper and lower molds 30, 33 for vacuum forming are configured to be able to rise and fall freely, and have suction holes 34, 35 at appropriate locations, respectively. These suction holes 34, 35 are provided with on-off valves 36,
It is connected to vacuum pumps 38 and 39 via 37. Further, the upper and lower molds 30 and 33 for vacuum forming have substantially the same mold surfaces 30a and 33a, and constitute a so-called mated die.

Then, the molding core material 11 is placed on the lower mold 30 for vacuum forming.
is set and the skin material 12 is held above it, the lower mold 30 for vacuum forming is raised, while the upper mold 33 for vacuum forming is lowered, and these upper and lower molds for vacuum forming are placed at an intermediate position between the two. 30 and 33 are engaged (see FIG. 7). Then, the vacuum forming upper and lower molds 3
0 and 33, the air between the skin material 12 and the molded core material 11 is evacuated through the suction hole 34 provided in the lower mold 30 for vacuum forming, and the molded core material 1
A skin material 12 is integrally adhered along the surface shape of 1.

Furthermore, the PVC sheet 13 forming the product surface of the skin material 12 has suction holes 3 formed in an upper mold 33 for vacuum forming.
The molding is performed faithfully to the surface shape of the mold surface 33a of the upper mold 33 for vacuum forming due to the air venting action from the mold surface 3.
If 3a is textured, etc.,
A solid grain pattern is applied to the surface of the PVC sheet 13.

In this way, the upper and lower molds 30 and 33 for vacuum forming are used to perform vertical drawing with a mated die, and the molded core material 11 and the skin material 12 are integrated to form the door trim body 15.

(3) Pressing process of fabric sheet 16.

First, the lower crimping die 4 is configured to be slidable.
The fabric sheet 16 is set on the upper surface of the fabric sheet 16, and at this time, the cushion material 18 laminated and adhered to the back side of the fabric sheet 16 is set facing upward.
Note that this fabric sheet 16 is attached to the setting block 4.
1, but this setting block 41 has a moderate buffering effect in the horizontal and vertical directions against excessive press pressure during press molding via a plurality of springs 42 against the lower press mold 40. It is becoming more and more equipped.

Then, the fabric sheet 16 is placed on the setting block 4.
After being set along the mold surface of mold 1, the lower mold for crimping 4
0 slides and the masking block 43
Shift downward. And masking block 43
The adhesive is applied by a spray gun 44 located above the fabric sheet 16, and the adhesive is applied over the entire surface of the cushion material 18 located on the back side of the fabric sheet 16. Next, the lower press mold 40 is moved from the adhesive application area to the press molding area by the sliding mechanism. An upper crimping mold 45 that can be raised and lowered is located above this lower crimping mold 40, and the door trim main body 15 that was integrated in the above process is set on the mold surface of this upper crimping mold 45. (See Figure 9).

Next, the upper die 45 for crimping is moved downward, and
Fabric sheet 1 on the upper part of the door trim body 15
6 is adhesively fixed (see FIG. 10). At this time,
The left and right side and lower peripheral edge ends of the laminated body of the fabric sheet 16 and the cushion material 18 are inserted and fixed into the circumferential groove 17 provided in the door trim body 15 by the crimping bar 46. The groove width can be set relatively freely as long as it satisfies the condition that the groove width is slightly smaller than the sum of the thicknesses of the fabric sheet 16 and the cushion material 18, so there are no restrictions on the width of the crimp bar 46. The mold processing including the crimp bar 46 can be easily performed without being damaged, and the crimp bar 46 only needs to be inserted into the circumferential groove 17 on the side of the door trim body 15.
Since variations during insertion can be absorbed by the thickness of the cushion material 18, slight dimensional errors during positioning can be tolerated.

Furthermore, after the left and right sides and lower ends of the laminate of the fabric sheet 16 and the cushion material 18 are inserted and fixed into the circumferential groove 17, the elastic restoring force of the cushion material 18 causes the circumferential groove 17 to fit into these fabric sheets 16. Since the ends 16a and 18a of both the cushion material 18 and the cushion material 18 are loaded more closely, there is no gap in the circumferential groove 17 that previously occurred, which significantly improves the appearance and prevents dust, dirt, etc. from adhering. Therefore, the conventional problem of easy staining can be effectively solved.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an automobile door trim to which the present invention is applied, and FIG.
A line sectional view, FIG. 3 is a sectional view of a main part showing another embodiment of the door trim for the same automobile, and FIGS. 4 to 10 show the manufacturing process of the door trim of the first embodiment of the present application. Figure 5 is a cross-sectional view showing the forming process of the core material, Figures 6 and 7 are cross-sectional views showing the process of integrating the core material and skin material, and Figures 8 to 10 are the door trim body. 11 is a partially cutaway perspective view showing a conventional automobile door trim, and FIG. 12 is an explanation showing the end treatment method of the fabric sheet in a conventional automobile door trim. It is a diagram. 10... Automobile door trim, 11... Molding core material, 12... Skin material, 13... PVC sheet, 1
4... Foam, 15... Door trim body, 16...
...Fabric sheet, 17... Circumferential groove, 18... Cushion material, 19... Resin core material, 20... Lower die for hot press, 21... Upper die for hot press, 22...
...Upper table, 23...Slide bar, 24...
... Hydraulic cylinder, 30 ... Lower mold for vacuum forming, 31
...Heater device, 32...Clamp device, 33...
... Upper mold for vacuum forming, 34, 35 ... Suction hole, 3
6, 37... Opening/closing valve, 38, 39... Vacuum pump, 40... Lower mold for crimping, 41... Block for setting, 42... Spring, 43... Masking block, 44... Spray gun, 45... ...Upper die for crimping, 46...bar for crimping.

Claims (1)

[Claims] 1. A fabric sheet is attached to an appropriate position on the surface of the trim body, which is formed to be approximately equal to the surface shape of the inner panel, and the peripheral end of the fabric sheet is placed in a circumferential groove provided in the trim body. In an automobile interior part that is inserted and fixed, the fabric sheet has a cushion material laminated and integrated on the back surface, and the total thickness of the fabric sheet and the cushion material is set to be larger than the groove width of the circumferential groove. The cushion material is compressed when the fabric sheet is inserted into the circumferential groove, and the fabric sheet is elastically held within the circumferential groove by the elastic restoring force of the cushion material. parts.