JPH0649415B2 - End treatment structure for inner contact members in automobile door trim - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile door trim equipped with an intermediate contact member, and particularly, to improve the appearance of the end portion of the intermediate contact member and to easily perform the terminal treatment work. The present invention relates to a terminal treatment structure of a contact member in a vehicle door trim.

《Prior art and its problems》 Recently, in order to improve the comfortability of the interior of a vehicle, a method of upgrading the materials of interior parts such as a vehicle door trim, or attaching a decorative member such as a cloth or a carpet to the surface of the door trim. Is often used.

FIG. 12 shows a front view of an automobile door trim, and FIG. 13 shows a cross-sectional view of the same door trim. These conventional automobile door trims 1 include a core material 2 formed into a required shape and the core material. The door trim body 4 is composed of a skin material 3 vacuum-bonded to the surface of the door trim member 2, and an intermediate member 5 attached to the surface of the door trim body 4 to give a decorative effect to the surface. ing.

Further, the center contact member 5 is usually fixed to the door trim body 4 via an adhesive, and the end treatment of the center contact member 5 is
The peripheral edge 5a of the center contact member 5 is inserted into the circumferential groove 6 formed in the door trim body 4 to improve the appearance. For example, an adhesive is coated on the back surface side of the center contact member 5. When the attachment work of the center contact member 5 is performed, this adhesive adheres to the inner wall of the circumferential groove 6 (indicated by symbol A in the figure), and the work of inserting the terminal 5a is not smoothly performed. At the same time, it has been pointed out that the adhesive adheres to the surface of the door trim body 4 and causes stains.

On the contrary, if the method of mounting the center contact member 5 after coating the door trim body 4 with the adhesive is used, the work of coating the adhesive on the predetermined portion in the circumferential groove 6 is troublesome and troublesome. Therefore, if the groove width of the circumferential groove 6 is set to be wide, the work becomes easy, but on the other hand, a gap is generated in the circumferential groove 6 and the appearance is deteriorated.

As a countermeasure against this, as shown in FIG. 14, the groove width of the circumferential groove 6 is set to be wide, and in order to fill this gap, a cushion material 7 such as urethane foam having a relatively thick thickness is formed on the back surface side of the intermediate contact member 5. However, in such a case, it is difficult to form the shape of the intermediate contact member 5, and highlight lines such as parting lines cannot be emphasized, resulting in poor appearance design.

«Object of the Invention» The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a terminal treatment structure of an intermediate member attached to a required surface portion of a door trim body, An object of the present invention is to provide a terminal treatment structure for an intermediate contact member, which has a good appearance and allows the terminal portion to be easily treated.

<< Structure and Effect of the Invention >> In order to achieve the above object, the present invention comprises a core material formed in a required shape and a skin material integrally attached to the core material so as to cover the surface of the core material. A door trim main body is constructed, and an intermediate contact member is adhered to an appropriate position on the surface of the door trim main body, and a peripheral edge portion of the intermediate contact member is inserted and fixed in a circumferential groove formed in the door trim main body. In the door trim, the center contact member is composed of a laminate of a fabric sheet and a backing layer that imparts appropriate rigidity to the fabric sheet, and the terminal side with the parting line of the center contact member as a fulcrum without interposing an adhesive. Insert it into the circumferential groove by folding it back, and by the restoring force due to the rigidity of the backing layer, the terminal part will be crimped to the inner wall surface of the circumferential groove, so that the peripheral edge end part of the center contact member is fixed to the door trim body. To Characterized in that was.

That is, according to the present invention, the peripheral edge portion of the intermediate contact member is not adhesively fixed in the peripheral groove, but the peripheral edge portion of the intermediate contact member is firmly held in the peripheral groove due to the rigidity of the intermediate contact member. Therefore, it is possible to eliminate stains on the product surface due to the adhesive, obstacles in terminal processing work caused by the adhesive, and the like, and there are advantages such as improvement in yield and improvement in work efficiency.

Further, according to the present invention, since a laminate in which a fabric sheet and a backing layer are laminated is used as an intermediate contact member, it is lightweight and has a shape such as a highlight line parting line due to the shape retention and rigidity of the backing layer. Easy to take out,
In addition, the groove width of the circumferential groove formed in the door trim body may be slightly larger than the thickness of these center contact members, so that the groove width of the circumferential groove can be set to a small value without increasing the groove width in consideration of the adhesive application as in the past. Since it can be sufficiently applied to the peripheral groove, it has effects such as excellent appearance and design.

<< Description of Embodiments >> Hereinafter, one embodiment of a terminal treatment structure for an intermediate contact member according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing an automobile door trim to which the terminal treatment structure of the present invention is applied, and FIG. 2 is a sectional view of the door trim.
3 to 11 are cross-sectional views showing a manufacturing process of the door trim, FIGS. 3 to 6 are cross-sectional views showing a molding process of the door trim main body, and FIGS. 7 and 8 are intermediate contact members. 9 is a cross-sectional view showing the molding step, and FIGS. 9 to 11 are cross-sectional views showing the integration step of the door trim body and the center contact member.

In FIGS. 1 and 2, the vehicle door trim 10 is
The door trim main body 11 and the center contact member 12 mounted on a required surface portion of the door trim main body 11 are generally configured.

More specifically, the door trim body 11 includes a resin core material 13 formed in a required shape and a skin material 14 integrally attached to the surface side of the core material 13 by vacuum forming or the like. Then, a composite resin material made of polypropylene resin and wood powder filler is used as the core material 13 in consideration of moldability, cost, mechanical strength, etc., and the skin material 14 is a foam layer 15 such as polypropylene foam or polyethylene foam. It is used by laminating the ABS mixed PVC sheet 16 on the back surface.

A circumferential groove 17 is provided in the door trim body 11 along the peripheral shape of the center contact member 12.
7 is formed simultaneously with the press molding of the core material 13.

On the other hand, the center contact member 12 includes a cloth 18 such as a velvet, a jersey, and a tricot, and a PVC on the back surface of the cloth 18.
The backing layer 19 is formed by laminating a non-breathable backing layer 19 such as a sheet and is preformed by thermoforming such as vacuum forming into a shape corresponding to the surface shape of the door trim body 11, which will be described later. It has shape retention and moderate rigidity.

Further, the inner contact member 12 is bonded and fixed to the door trim main body 11 except for the inside of the circumferential groove 17 with an adhesive 20.
It is bent at the shoulder portion 17a and is inserted so that the terminal side is folded back into the circumferential groove 17 with this bending line 21 as a fulcrum. Therefore, due to the rigidity of the backing layer 19 of the intermediate contact member 12, a restoring force is exerted, and as shown in FIG.
The peripheral edge portion 12a of the center contact member 12 is in a crimped state and firmly fixed to the inner wall surface 17b.

At this time, as the shape of the circumferential groove 17, in this embodiment, the groove width is set to 2 mm and the groove depth is set to 7 mm. Similarly, the center contact member 1 folded back with the bending line 21 as a fulcrum.
The size of the peripheral edge 12a of 2 is set to 7 mm, which is the same as the depth of the groove of the peripheral groove 17. It has been found by experiments that the dimension of the folded-back portion does not deviate from the circumferential groove 17 due to a desired effect, that is, the rigidity of the backing layer 19, if the dimension is 70% or more of the depth of the circumferential groove 17.

As described above, the structure for terminating the intermediate contact member 12 according to the present invention is such that the intermediate member 12 includes the cloth 18 and the backing layer 1.
Since a lightweight material such as the laminated body of 9 is used, it contributes greatly to the weight reduction of the product and the adhesive 20 is applied to the circumferential groove 17.
Since the center contact member 12 is inserted without interposing, the adhesive does not adhere to the product surface and the product surface does not get dirty,
In addition, the work of inserting the peripheral edge 12a of the center contact member 12 proceeds smoothly, the work efficiency is significantly improved, and since the adhesive is not used, the groove width of the peripheral groove 17 can be set to be extremely small, and the peripheral groove 17 can be set as in the conventional case. A cushioning material such as urethane foam is used to fill the gap of the groove 17, and
It is possible to effectively solve the conventional inconvenience that it was difficult to obtain the shape.

Next, the manufacturing process of the automobile door trim will be described in detail with reference to FIGS.

The manufacturing process of the automobile door trim 10 is roughly classified into the following three processes.

(1) Molding process of the door trim body.

(2) Forming step of the intermediate contact member.

(3) Integration process of the door trim body and the contact member.

(1) Step of molding the door trim body 11.

First, as the material of the core material 13, a wood fiber board in which 30 parts by weight of a resin binder is mixed with 70 parts by weight of wood fibers is used. As the resin binder, a fiber containing thermosetting resin such as phenol resin or urea resin and thermoplastic resin such as acrylic resin, and wood fiber containing a large amount of cotton yarn to prevent tearing is used. To improve the moldability.

Then, as shown in FIG. 3, this wood fiber board M is placed on the upper surface of the lower die 30 for hot press molding. The mold surface 30a of the hot press molding lower die 30 is set to give a curved surface such as an armrest portion and a door waist portion to the core material 13. An upper die 31 for press molding is installed so as to be able to move up and down.

The mold surface of the hot press molding upper mold 31 is the lower mold 3.
It has almost the same shape as the one side 30a of 0.

Then, by operating an elevating device (not shown), the hot press molding upper and lower molds 30 and 31 are engaged with each other to mold the core material 13 into a desired shape as shown in FIG.

Furthermore, after hot press molding, by the operation of the lifting device,
After the hot press molding upper die 31 is lifted, the core material 13 molded into a required shape is taken out from the hot press molding lower die 30 and, if desired, a mounting bracket 32 such as a bracket as shown in FIG. The core 13 is attached and the subassembly is completed.

Next, the core material 13 thus formed is positioned and set on the upper surface of the vacuum forming lower mold 40 as shown in FIG. 5, and the skin material 14 is placed above the core material 13.

The skin material 14 is heated and softened by the heater device 41, and then positioned above the core material 13 by the operation of a slide mechanism (not shown). The peripheral portion of the skin material 14 is kept horizontal by the clamp device 42 and the foam layer 1
It is held with the 5 side facing the core 13 side.

Further, an upper die 43 for vacuum forming is provided above the skin material 14.
And the vacuum forming upper and lower molds 40 and 43 are configured to be able to move up and down with each other, and suction holes 44 and 45 are provided at appropriate places, respectively.
4 and 45 are vacuum pumps 4 via open / close valves 46 and 47.
8 and 49 are connected. Further, the vacuum forming upper and lower molds 40 and 43 are provided with substantially the same mold surfaces 40a and 43a, and form a so-called matched die.

Then, after the core material 13 is set on the vacuum forming lower die 40 and the skin material 14 is held above the core material 13, the vacuum forming lower die 40 rises while the vacuum forming upper die 43 descends. Then, these vacuum forming upper and lower molds 4 are located at an intermediate position between the two.
0 and 43 are engaged (see FIG. 6).

Simultaneously with the engagement of the vacuum forming upper and lower molds 40 and 43, air existing between the skin material 14 and the core material 13 is degassed through the suction holes 44 provided in the vacuum forming lower mold 40, and The skin material 14 is integrally attached along the surface shape of the material 13.

Further, the PVC sheet 16 forming the product surface of the skin material 14 is faithful to the surface shape of the die surface 43a of the vacuum forming upper die 43 due to the degassing action from the suction holes 45 formed in the vacuum forming upper die 43. Is molded into.

In this way, the vacuum forming upper and lower molds 40 and 43 are used to perform the vertical pulling by the matched die, the core material 13 and the skin material 14 are integrated, and the door trim main body 11 is formed.

(2) Forming step of the intermediate contact member 12.

First, the backing layer 1 located on the back surface side of the contact member 12
Since 9 is made of a thermoplastic resin material such as a PVC sheet, the center contact member 12 is heated and softened by a heater device (not shown), and then the peripheral edge is held by the clamp device 50 to form a vacuum forming mold 51. Positioning is performed between the crimping die 52 and the crimping die 52 as shown in FIG.

Then, the central contact member 12 is vacuum-formed by the vacuum suction holes 53 provided in the vacuum forming die 51, and the crimping die 52 is lowered by an elevating device (not shown) to form the vacuum forming die 51 and the crimping die. The center contact member 12 is molded into a desired shape between the center member 52 and the center member 52.

Further, after the center contact member 12 is molded, the center contact member 12 is cut by the cutting blade 54 provided along the outer periphery of the pressure bonding die 52.
The outer peripheral end is cut, and the center contact member 12 is trimmed (see FIG. 8).

(3) A step of integrating the door trim body 11 and the contact member 12.

First, as shown in FIG. 9, after the door trim main body 11 is positioned and set on the upper surface of the lower die 60 for crimping, an adhesive 62 is coated on the attachment portion 12 of the door trim main body 11 with the spray gun 61. At this time, the masking jig 63 is used so that the adhesive agent 62 does not squeeze into the circumferential groove 17 and outward thereof.

Next, the center contact member 12 is attached to the upper side of the door trim body 11.
Although the cross 18 is positioned and set so as to be positioned on the upper side, an upper crimping die 64 is located above the lower crimping die 60 and is configured to be able to move up and down by the operation of an elevator device (not shown). Along with the outer periphery of the crimping upper die 64, a slide bar 65 that is slidable downward is provided.

Then, as shown in FIG. 11, the crimping upper die 64 descends, and the middle contact member 12 and the door trim body 11 are firmly bonded to each other via the adhesive 62 by the engaging action of the crimping upper and lower dies 60, 64. Fixed.

Further, if the slide bar 65 arranged on the outer periphery of the pressure-bonding upper die 64 slides downward to push the peripheral end portion 12a of the inner contact member 12 into the circumferential groove 17, the inner contact member 12
Due to the rigidity of the backing layer 19, the tip of the peripheral edge of the intermediate contact member 12 is pressed against the inner wall surface 17b of the circumferential groove 17,
The peripheral edge portion 12a of the center contact member 12 is firmly held, and the problem of coming off the peripheral groove 17 can be reliably prevented.

In this embodiment, the adhesive 62 is used as the door trim body 11
However, the adhesive 62 may be coated after masking the peripheral edge portion 12a on the back surface side of the center contact member 12.

As described above, according to the present invention, in the peripheral edge treatment of the intermediate contact member 12, the rigidity of the backing layer 19 is used to repel the peripheral edge end portion 12 a to the peripheral groove 1 by the repulsive force of the intermediate contact member 12.
Since the inner wall surface 17b in 7 is crimped,
The invention has a high practical value such that the peripheral end portion of the intermediate contact member can be reliably fixed with a simple operation and the appearance design is extremely excellent.

[Brief description of drawings]

FIG. 1 is a front view showing an automobile door trim to which a terminal treatment structure according to the present invention is applied, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIGS. 3 to 11 show the automobile door trim. 3 to 6 are cross-sectional views showing a molding process of a door trim body, FIGS. 7 and 8 are cross-sectional views showing a molding process of an intermediate contact member, and FIGS. 11th
FIG. 12 is a sectional view for explaining a process of integrating the door trim body and the center contact member, FIG. 12 is a front view showing a conventional automobile door trim, and FIG. 13 is a sectional view taken along line XIII-XIII in FIG.
FIG. 14 is a sectional view showing a conventional terminal treatment structure as in FIG. 10 ... Automobile door trim 11 ... Door trim main body 12 ... Intermediate contact member 13 ... Core material 14 ... Surface material 17 ... Perimeter groove 18 ... Cross 19 ... Backing layer 21 ... Bending line 30 ... Hot press molding lower mold 31 ... Hot press Upper mold for molding 40 ... Lower mold for vacuum molding 41 ... Heater device 42 ... Clamping device 43 ... Upper mold for vacuum molding 44, 45 ... Suction hole 46, 47 ... Open / close valve 48, 49 ... Vacuum pump 50 ... Clamping device 51 ... Vacuum forming mold 52 ... Crimping mold 54 ... Cutting blade 60 ... Crimping lower mold 62 ... Adhesive 63 ... Masking jig 64 ... Crimping upper mold 65 ... Slide bar

Claims (1)

[Claims] 1. A door trim body is composed of a core material formed into a required shape and a skin material integrally attached to the core material so as to cover the surface of the core material. In the automobile door trim, in which the center contact member is adhered to and the peripheral edge portion of the center contact member is inserted and fixed in the circumferential groove formed in the door trim body, the center contact member is a cloth sheet, and It is composed of a laminate with a backing layer that imparts appropriate rigidity to the fabric sheet, and is inserted into the circumferential groove by folding back the terminal side with the parting line of the center contact member as a fulcrum without interposing an adhesive, By the restoring force due to the rigidity of the backing layer, the end portion is pressed against the inner wall surface of the circumferential groove, and the peripheral end portion of the contact member is fixed to the door trim body. End treatment structure for inscribed parts.