JP3388253B2 - Integral foam mold for pad material of vehicle seats - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integral foaming mold for a pad material for a vehicle seat.
The present invention relates to an integrated foam molding die for a pad material of a vehicle seat, in which a wire frame is inserted and held in a foam molding die, and then a stock solution of foam synthetic resin is injected into the foam molding die to foam-form a pad material integrally with the wire frame.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 5 (a) and 5 (b), a seat cushion 1 of a vehicle seat has a seat frame 2 made of a wire frame and a pad material 3 integrally foamed. The surface of the pad material 3 is formed by being covered with the skin material 5. The seat frame 2 made of a wire frame and the pad material 3 are integrally formed by an integral foam molding die of the pad material.

As shown in FIG. 5B, the end portion 5 of the skin material 5 is
A hook member 7 made of synthetic resin is attached to a, the hook 7a at the end of the hook member 7 is inserted into the recess 3a formed on the back surface side of the pad material 3, and the wire frame located in the recess 3a, etc. It is locked to the seat frame 2. In addition, the end 5a of the skin material 5 is attached by an ohmic clip or the like.
May be fixed to the seat frame 2.

Further, as a structure for attaching the seat skin material,
JP-A-6-277373, JP-A-6-31206
No. 6, gazette of Shokai 63-120998, gazette of Kaikai 2
No. 9168, Japanese Utility Model Laid-Open No. 2-89997 and the like exist.

[0005]

However, in these conventional integrated foam molding dies for pad materials for vehicle seats, the wire frame is embedded in the pad material 3 and the portion where the wire frame is exposed from the pad material 3. The portion exposed by the wire frame from the pad material 3 is formed in a thin portion such as the rear end portion of the pad material 3, and the thick portion at the front end portion of the pad material 3 is formed. It was difficult to form.

Further, when the seat frame 2 made of a wire frame is in an embedded state, the work of locking the end portion 5a of the skin material 5 by the hook member 7 is complicated, and the end portion 5 of the skin material 5 is complicated.
There is a possibility that a may be pulled and wrinkles may be generated in the lateral gusset portion of the skin material 5, and the appearance is deteriorated. Further, when an ohmic clip or the like is used when disassembling the seat cushion, it is necessary to remove the ohmic clip or the like one by one, and the disassembling work cannot be performed easily and quickly.

It is an object of the present invention to easily form a portion of a wire frame as a seat frame exposed from a pad material, and to easily and quickly engage an end portion of a skin material with a hook member, It is possible to obtain a vehicle seat that can absorb dimensional error of the frame, can prevent wrinkles, etc., can improve the appearance of the appearance, and can disassemble the seat easily and quickly. Provided is an integrated foaming mold for a pad material of a vehicle seat.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an integrated foam molding die for a pad material for a vehicle seat according to claim 1 of the present invention is a foam molding die with a wire. The frame is inserted and held, and then the undiluted solution of the foamed synthetic resin is injected into the foaming mold to foam-mold the pad material integrally with the wire frame. A direction in which a block for setting the wire frame, a part of which is exposed from the pad material, is provided in one of the upper mold and the lower mold of the foaming mold and faces the block for setting the wire frame. A block for pressing the wire frame protruding to the other side is provided on the other mold of the upper mold or the lower mold, and the block for setting the wire frame and the block for pressing the wire frame are provided. Of the pad is foam-formed integrally with the wire frame so that the wire frame is exposed from the pad material at the position where the block for setting the wire frame and the block for holding the wire frame are present. It is characterized by being done.

According to a second aspect of the present invention, in the integrated foam molding die for a pad material for a vehicle seat, a recess is formed in a block for setting the wire frame, and a cross section is formed along an inner peripheral edge of the recess. A concave elastic body is inserted, and a wire frame is inserted in the concave portion of the elastic body.

According to a third aspect of the present invention, in the integrated foam molding die for a pad material for a vehicle seat, the wire frame pressing block is formed to have a narrow width, and the wire frame pressing block is formed. Is fitted to a block for setting a wire frame.

According to the integral foam molding die for a pad material for a vehicle seat according to claim 1 of the present invention, for setting a wire frame in which a part of the wire frame in the longitudinal direction is exposed from the pad material. Block of the foaming mold is provided in one of the upper mold and the lower mold, and the wire frame pressing block protruding in the direction opposite to the wire frame setting block is provided in the other mold of the upper mold or the lower mold. Provided in the mold, the block for setting the wire frame and the tip of the block for pressing the wire frame are brought into contact with each other,
Since the pad material is foam-molded integrally with the wire frame, the wire frame is exposed from the pad material at the position where the block for setting the wire frame and the block for holding the wire frame are present. The wire frame is integrally joined with the pad material.

According to the integral foam molding die for a pad material for a vehicle seat according to a second aspect of the present invention, a recess is formed in the block for setting the wire frame, and the recess is formed along the inner peripheral edge of the recess. Since the elastic body having a concave cross section is inserted and the wire frame is inserted in the concave portion of the elastic body, the elastic body can prevent the undiluted solution of the synthetic resin foam from adhering to the wire frame.

Further, according to the integrated foam molding die for the pad material of the vehicle seat according to claim 3 of the present invention, since the block for holding the wire frame is formed narrow, it is foam molded. Since only a narrow slit is formed in the pad material, the tip of the wire frame holding block is fitted to the wire frame setting block without affecting the cushioning property of the pad material. Therefore, it is possible to prevent the undiluted solution of the foamed synthetic resin from adhering to the wire frame.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An integral foaming mold for a pad material for a vehicle seat according to the present invention will be described below in detail with reference to the drawings.
1 and 2 show an embodiment of an integrated foaming mold for a pad material for a vehicle seat according to the present invention,
FIGS. 3 and 4 show a pad material of a vehicle seat according to the present invention, which is molded by an integral foaming mold. Although the vehicle seat 11 is shown as being applied to a seat cushion in the present embodiment, the vehicle seat 11 can also be applied to other pad materials.

As shown in FIG. 3, the vehicle seat 11 includes a wire frame 12 as a seat frame formed in a substantially frame shape, and an inner frame 16 made of a wire frame is provided between the front and rear frames of the wire frame 12. The mounting portions 16a and 16b are formed of wires in a state of being provided and protruding downward and rearward from the extension lines in the front and rear of the inner frame 16.

The pad material 1 is attached to the wire frame 12.
3 is integrally foam-molded by a foam-molding die described later to be integrally formed. Further, a portion F1 exposed from the pad material 13 in a thick portion of the pad material 13 on the front end side and the side portion side of the pad material 13 of the wire frame 12 and a portion F2 embedded in the pad material 13 of the wire frame 12 And have. In addition, the wire frame 12 also has a pad material 13 on the mounting portion 16b side, which is the rear end side of the vehicle seat 11.
A more exposed portion F3 is formed.

As shown in FIG. 4, the outer periphery of the pad material 13 is covered with a skin material 15. A hook member 21 is provided on the end portion 15a side of the skin material 15, and the hook member 21 serves as a locking portion for the pad material 1 of the wire frame 12.
It is locked to the portion F1 exposed from 3. The locking portion may be formed separately from the wire frame 12.

Further, FIG. 4 shows a hooked state by the hook member 21 of the portion F1 where the wire frame 12 of the present invention is exposed from the pad material 13.
3, a recess 13a is formed on the bottom side of the wire frame 3, and the wire frame 12 is arranged in a state of floating above the bottom of the recess 13a.
The hook member 21 is locked to the wire frame 12.

1 and 2 show an embodiment of a foam molding die 31 according to the present invention. The foam molding die 31 includes a lower mold 32 and an upper mold 33. Three
1, the wire frame 12 is inserted and held, and then a stock solution of foam synthetic resin is injected into the foam molding die 31 to foam-mold the pad material 13 integrally with the wire frame 12.

A block 35 for setting the wire frame 12 forming the portion F1 of the wire frame 12 exposed from the pad material 13 is provided on the upper mold 33 of the foaming mold 31, and the block for setting the wire frame 12 is provided. The lower die 32 is provided with a block 36 for pressing the wire frame 12 projecting in a direction opposite to the direction 35.

A block 35 for setting the wire frame 12 and a block 36 for holding the wire frame 12
May be hard, or may be formed of an elastic rubber material such as rubber rubber. Further, the lower mold 32 and the upper mold 33 can be respectively reversely configured.

As shown in the enlarged view of FIG. 2, the block 35 for setting the wire frame 12 has a recess 35a formed therein, and an elastic body such as silicon or rubber having a recessed section along the inner peripheral edge of the recess 35a. 38 has been inserted.
The wire frame 12 is inserted into the recess 38a made of an elastic material such as silicon or rubber to prevent the undiluted solution of the foamed synthetic resin from adhering to the wire frame 12.

As shown in FIGS. 1 and 2, the block 35 for setting the wire frame 12 is intermittently arranged along both sides of the wire frame 12 in the longitudinal direction so that the foam molding die 3 is provided.
It is provided on the upper die 33 of 1. The wireframe 1
In the present embodiment, the second setting block 35 is formed of an integral member having a concave portion 35a formed therein. However, separate left and right members are provided at intervals so that the wire frame 12 can be inserted therein. It may be.

At the position where the block 35 for setting the wire frame 12 is present, the wire frame 12 is moved to the pad material 1
The part F1 exposed from 3 is formed, and the wire frame 1
The portion F2 embedded inside the pad material 13 is formed at a position where the second setting block 35 does not exist.

Further, since the block 36 for pressing the wire frame 12 of the lower die 32 is formed to have a narrow width, it is only necessary to form the narrow slit 13b in the foam-molded pad material 13 so as to form the pad material. It does not affect the cushioning property of No. 13. The tip of the pressing block 36 of the wire frame 12 is fitted into the recess 35 a of the setting block 35 of the wire frame 12.

Therefore, it is possible to prevent the stock solution of the foamed synthetic resin from adhering to the wire frame 12. The lower mold 32 is provided with a pattern forming member 43 for pattern formation and a pulling member corresponding to the pattern on the surface of the vehicle seat 11 and the pulling member for the skin material 15.

[0027]

The above is the embodiment of the present invention. According to the integrated foam molding die for the pad material of the vehicle seat according to claim 1 of the present invention, a part of the wire frame in the longitudinal direction is A wire frame that is provided with a block for setting a wire frame that forms a portion exposed from the pad material in one of an upper mold and a lower mold of a foaming mold and projects in a direction opposite to the block for setting the wire frame. A block for pressing the above is provided on the other mold of the upper mold or the lower mold, and the block for setting the wire frame and the tip of the block for pressing the wire frame are brought into contact with each other, and the pad material is integrated with the wire frame. Since it is foam molded, the wire frame is exposed from the pad material at the position where the block for setting the wire frame and the block for holding the wire frame are present. Wire frames are joined together with the pad material in the absence position of click.

According to the integral foam molding die for a pad material for a vehicle seat according to claim 2 of the present invention, a recess is formed in the block for setting the wire frame, and the recess is formed along the inner peripheral edge of the recess. Since the elastic body having a concave cross section is inserted and the wire frame is inserted in the concave portion of the elastic body, the elastic body can prevent the undiluted solution of the synthetic resin foam from adhering to the wire frame.

Further, according to the integral foam molding die of the pad material for a vehicle seat according to claim 3 of the present invention, since the block for holding the wire frame is formed narrow, it is foam molded. Since only a narrow slit is formed in the pad material, the tip of the wire frame holding block is fitted to the wire frame setting block without affecting the cushioning property of the pad material. Therefore, it is possible to prevent the undiluted solution of the foamed synthetic resin from adhering to the wire frame.

According to the present invention, the portion of the wire frame exposed from the pad material can be easily formed, and the hooking operation of the end portion of the skin material by the hook member can be performed easily and quickly. Can absorb
An integrated foaming mold for a vehicle seat pad material that does not cause wrinkles or the like, can improve the appearance of the external appearance, and can provide a vehicle seat that can easily and quickly disassemble the seat. Can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of an integrated foaming mold of a pad material for a vehicle seat according to the present invention.

FIG. 2 is a cross-sectional view of a block forming a portion of a wire frame of an integrally foamed mold of a pad material of a vehicle seat according to the present invention exposed from the pad material.

FIG. 3 is a partial perspective view of the back surface of the attachment structure of the skin material of the vehicle seat formed by the integral foaming mold of the pad material of the vehicle seat according to the present invention.

FIG. 4 is a cross-sectional view showing a mounting structure of a skin material of a vehicle seat formed by an integral foaming mold of a pad material of a vehicle seat according to the present invention.

5A and 5B show a conventional mounting structure for a skin material of a vehicle seat, in which FIG. 5A is a sectional view and FIG. 5B is a partially enlarged sectional view.

[Explanation of symbols]

11 Vehicle seat 12 wireframe 13 Pad material 13a recess 13b slit 15 Skin material 15a end 16 internal frame 21 Hook member 31 Foam Mold 32 Lower mold 33 Upper mold 35 Blocks for setting wireframes 35a recess 36 Wireframe retainer block 38 Silicone elastic body 38a recess 43 Shaped member

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-58-203026 (JP, A) JP-A-8-140777 (JP, A) JP-A-58-203027 (JP, A) 112197 (JP, U) Actual development 1-74114 (JP, U) Actual development Sho 63-68414 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B68G 7/06 B29C 39 / 10 B29K 105: 04

Claims (3)

(57) [Claims] 1. A pad material for a vehicle seat in which a wire frame is inserted and held in a foam molding die, and then a stock solution of foam synthetic resin is injected into the foam molding die to foam-mold the pad material integrally with the wire frame. In the foaming mold, a block for setting the wire frame forming a part of the wire frame in the longitudinal direction, which is exposed from the pad material, is provided in one of the upper mold and the lower mold of the foaming mold,
A block for pressing the wire frame protruding in a direction opposite to the block for setting the wire frame is provided in the other mold of the upper mold or the lower mold, and the block for setting the wire frame and the wire frame are pressed. The tip of the block is brought into contact with the wire frame, and the pad material is foam-formed integrally with the wire frame so that the wire frame is exposed from the pad material at the position where the block for setting the wire frame and the block for holding the wire frame are present. An integrated foam molding die for a vehicle seat pad material. 2. A recess is formed in a block for setting the wire frame, an elastic body having a concave cross section is inserted along an inner peripheral edge of the recess, and the wire frame is inserted in the recess of the elastic body. An integrated foaming mold for a pad material for a vehicle seat according to claim 1. 3. The wire frame pressing block is formed to have a narrow width, and the tip of the wire frame pressing block is fitted to the wire frame setting block. Item 1. An integrated foam molding die for a pad material for a vehicle seat according to Item 1.