JPS6222683A - Production of seat body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for manufacturing a seat body, such as an automobile seat, in which a pad component is covered with two or more different skins, by bonding a pad component E skin. Regarding.

[Conventional technology]

The seating body is provided with a skin covering the pad components for the purpose of improving appearance, improving the feel of the surface, improving the comfort of the buttocks, and protecting the pad components.

This skin is used to improve appearance, etc.
Two or more different types of epidermis, for example epidermis of different colors, may be used in combination.

Conventionally, the method of manufacturing a seat body covered with two or more different skins is to provide a suspension wire and a resin core on the skin side, and then hog-ring these to the wire inserted into the pad component. There is a known technique for stopping the process and combining the two.

However, in this technique, if the shape of the pad component between the suspended parts of the skin is made into a concave shape, the skin in this part will rise from the surface of the pad component. It cannot be made into a concave shape. Therefore, there is a drawback that there are restrictions on the finished shape. In addition, the skin has a sewing line at the hanging position, so there is a drawback that it is not possible to obtain a smooth curve. Furthermore, since the epidermis rises from the pad component, there is also the drawback that wrinkles are likely to form on the epidermis.

For seat bodies using one type of skin, a technique for bonding the skin and pad components is known. With this technology, the skin does not lift up from the pad component, so there are no restrictions on the finished shape.

Further, it has the advantage that smooth curves can be obtained and wrinkles are less likely to occur.

However, if this technology is directly applied to a seat body in which a pad component is made up of two or more types of skin, meandering may occur in the nuchal line formed by the joints between different types of skin, and A problem arises in that the position varies depending on the product.

To solve this problem, different types of epidermis,
The technology of gluing separate pad parts and then combining them to form a seat body was developed in the 1980s-30s.
The proposal was made in No. 642.

However, this technique has the disadvantage of being relatively expensive.

In order to eliminate these weaknesses, the applicant
The company has already filed a patent application for an invention related to a ``method for manufacturing a seat body'' dated July 11, 2017.

In the invention according to this application, different skins are joined together in advance, a positioning member is temporarily fixed in the vicinity of these joined parts, and this positioning member is engaged with the mold material to position the skin on the mold material. After the skin is fixed to the mold material, the skin and the pad component are bonded together.

Although this technique can reduce costs, it requires a step to remove the positioning member. Therefore,
If this step can be omitted, costs can be further reduced.

[Problem that the invention seeks to solve]

In consideration of the above-mentioned fact, the present invention aims to provide a method for manufacturing a seat body in which a pad component that does not require removal of the positioning member is covered with two or more different skins.

[Means for solving problems]

In the method for manufacturing a seat body according to the present invention, two or more types of different skins are joined together in advance, and a positioning means is provided along these joints, while the pad component is provided with a surface skin. A concave portion is formed at a position corresponding to the joint portion between the pad components, and a molded material is formed with a convex portion corresponding to the concave portion formed in the pad component. After positioning and fixing the nuclear skin to the mold by temporarily locking the positioning means to the convex part formed on the mold material, the epidermis is fitted into the concave part of the pad component by fitting the convex part of the mold material into the concave part of the pad component. and the pad component are brought into contact with each other via an adhesive to bond them together.

[Effect]

In the manufacturing method of the seat body having the above structure, the positioning means for the outer skin is temporarily locked to the convex part of the profile material, and the joints of the different outer skins are positioned and fixed to the profile material, and in this state, the outer skin is bonded to the pad component. , the joints between different skins are located at predetermined locations with respect to the pad component.

The means for opening the skin, which is provided at the joint between different skins, is
Located in the recess of the pad component.

〔Example〕

1 to 5 show an embodiment in which the method for manufacturing a seat body according to the present invention is applied to a seat cushion for an automobile seat.

FIG. 5 shows a para)" portion A10 of the seat cushion. The pad part 10 includes a substantially horizontal seat portion 12,
It is comprised of wall parts 14 located on three sides around the seat part 12 and rising from the seat part 12.

The seat portion 12 is formed with four portions 16 (see also FIG. 1) that are recessed from the other surface.

FIG. 4 JICd shows a part of the skin 20 covering the pad component IO. The epidermis 20 is composed of two epidermis 20A and 20B of different types, and in this embodiment, different colors. The epidermis 20A and the epidermis 20B are sutured together with a suture thread 18AK at their ends to be joined together. Moreover, this sewing thread 18A is also attached to a thin resin core 22 at the same time.
One end of the is sutured. The other end of the resin core 22 is sewn to the epidermis 20B with a sewing thread 18B.

FIG. 1 schematically shows a press device 24 used to bond the pad component 10 and the skin 20 together. The main parts of the press device 24 include an upper mold 26 and a lower mold 28. The upper mold 26 has a shape that fits into the upper side of the pad component 10, and the upper mold 26 has a shape that fits into the upper side of the pad component 10.
A concave groove 32 is formed in the convex portion 30 corresponding to 6. The tip of the convex portion 30 is separated by the groove 32 into an outer wall 30A and an inner wall 30B, but the protruding length of the outer wall 30A is shorter than that of the inner wall 30B.

A rail member 36 is disposed around the outer periphery of the upper die 26, and the rail member 36ti is capable of holding the peripheral edge of the skin 200. The lower mold 28 is shaped to fit into the lower part of the pad component 10.

Next, the process of adhering the skin 20 to the pad component IO will be explained.

As shown in FIG. 1, the pad component IO is placed into the press device 24 with its lower side fitted into the lower die 28. On the other hand, the skin 20 is bent in the shape shown in FIG. 4, and the resin core 22 is press-inserted into the groove 32 formed in the convex part 30 of the upper die 26, as shown in FIG. The outer skin 2OA located on the center side is positioned and fixed to the upper die 26 so that the outer skin 2OA is positioned on the center side. Further, the peripheral end portion of the skin 20B is held between the rail members 36, and the placement of the skin 20 on the upper mold 26 is completed, and the skin 20 is fixed to the upper mold 26. In this state, a tensile force is acting on the epidermis 20A and the epidermis 20BK.

After completing the arrangement of the pad component lO and the skin 20 on the lower mold 28 and the upper mold 26 as described above, the pad component lO
Adhesive is sprinkled on the upper surface of O. After this, upper mold 2
6 is lowered, and the upper mold 26 presses the pad component 10 with the skin 20 interposed therebetween.

At this time, the convex portion 30 of the upper mold 26 is connected to the skin 20 and the resin core 2.
2 to the recess 16 of the pad component 10 with the recess 16 in between.
Since the skin 20 near the convex part 30 and the concave part 16 is stretched and inserted into the concave part 16 by pushing it outward and pushing down the bottom wall of the concave part 16, the skin 20 is stretched as shown by the chain line in FIG.

As a result, the skin 20 is brought into close contact with the pad component 10 following the shape of the upper surface of the pad component IO, and over time becomes bonded to the pad component due to the action of the adhesive. After a predetermined period of time has elapsed, the peripheral edge of the skin 20B is removed from the rail member 36, and then the upper mold 26 is raised.

When the upper die 26 is lifted and the convex part 30 comes out of the concave part 16, the concave part 16, which had been pushed open, is restored to its original shape. At this time, the outer wall 3°A of the convex portion 30
Epidermis 2 located nearby and stretched and bent
Since 0B is released from the pressure restraint by the outer wall 30A,
It contracts and becomes the state shown in No. 31/.

Note that a part of the contracted portion of the skin 20 may be attached to the wall of the recess 16 of the pad component IO, but in this state, it is not yet in a completely adhered state, and that the contractile force is greater than this adhesive force. Since the bonding area is also large, the adhesive part peels off from the pad component 10, resulting in the state shown in FIG.

The process of adhering the pad component 10 and the skin 20 is thus completed, and the nuchal lines of the skin 20A and the skin 20B are positioned correctly along the recess 16 of the pad component 10. In this way, epidermis 2
The Tahad part 10 covered with 0 is taken out from the lower mold 28 and sent to the next process.

In this embodiment, both the skin 2OA and the skin 20B are made of fabric, or when the present invention is carried out, a material with a large amount of elongation provides a good finish.

In this embodiment, the plate-shaped resin core 22, one end of which is sewn together with the skin 2OA and the skin 20B, is used as a positioning means, and the resin core 22 is inserted into the groove 32 formed at the tip of the convex part 30 of the upper die 26. With the resin core 22 temporarily locked, the convex portion 30 is fitted into the recess 16 of the pad component 10, and the skin 20 and the pad component 10 with the resin core 22 placed together are separated.
We are bonding with.

Therefore, the nodal line between the epidermis 20A and the epidermis 20B is the resin core 2
2 is disposed in the concave portion 16, it is correctly placed along the concave portion 16, and problems that impair the appearance, such as meandering of the nuchal line or variation in the position of the nuchal line depending on the product, do not occur. do not have.

In addition, since the skin 20 and the pad component 10 are bonded and integrated, it is possible to easily accommodate the design VC41 in which a recessed portion is formed, and a smooth curve can be easily obtained, and wrinkles will not occur.

Furthermore, since there is no need to separate the pad components, costs can be reduced in this respect. 1 more resin core 2
Since it is located within the double recess 16 and does not adversely affect seating comfort, it does not need to be removed, and the manufacturing process of the seat body can be simplified and costs can be further reduced.

Further, since the resin core 22 remains as it is without being removed even after positioning, the effect of restraining the position of the nodal line between the epidermis 2OA and the epidermis 20B is greater, and it is even more effective than the invention according to the applicant's earlier application mentioned above. High nodal line linearity can be obtained. This also makes it possible to maintain high linear linearity even after many years of use.

Other examples for carrying out the invention are shown in FIGS. 6 and 7. In this embodiment, the epidermis 20B is folded back near the end, and is sewn to the part before folding near the folded-back tip, and simultaneously sewn to the epidermis 20A at this section. A wire 38 is inserted through the closed cross section formed in the folded portion of the skin 20B.

On the other hand, a clip 40 is provided on the upper die.

This clip 40Fi is composed of two members that can be separated into left and right sides, and a concave groove 42 whose opening side is narrow is formed in the opposing portion of both members. When inserting or removing the portion of the skin 20 through which the wire 38 is inserted into the groove 42, one member of the clip 40 is moved and opened as shown by the broken line in FIG. 6, and the portion is inserted. After that, it is closed to hold this part in place so that it cannot escape.

In this example, after the skin 20 is temporarily fixed to the upper die 26 as shown in FIG. 6, the same operation as in the previous example is performed, thereby obtaining the finished shape shown in FIG. 7. .

In the finished shape shown in FIG. 7, the skin 20A and the skin 2
An added effect is that the sutured portion with 0B does not bleed onto the surface side.

In this embodiment, instead of the wire 38, it is also possible to use a lobe, a round rod shape, a cylindrical resin core, or the like.

Still other embodiments are shown in FIGS. 8 and 9. In this embodiment, the bead 44 is sandwiched between the joint between the epidermis 2OA and the epidermis 20B and sewn together at the same time. In this embodiment, a clip 40 similar to that described above is used to bond the skin 20 and the pad component 10, and the finished shape shown in FIG. 9 is obtained.

In this embodiment, the bevel 44 is exposed on the front side, but it can also be actively utilized as an accent to the exterior design.

In addition, since the bead 44 is relatively soft, even if the bead 44 is located relatively close to the epidermis 20, it will not have a negative effect on sitting comfort, and if the concave portion 16 of the pad component IO is shallowly seated, can also be applied.

〔Effect of the invention〕

As explained above, in the method for manufacturing a seat body according to the present invention, two or more types of different skins are joined together in advance, and a positioning means is provided along these joints,
After positioning and temporarily locking the skin to the mold material using this positioning means, the skin and the entire pad component are bonded together.

After adhesion, the positioning means is located in the recess of the pad component and is directly disposed on the seat body. Therefore, the positioning means can be removed without impairing the function of the seat body! ! This has the effect of making it unnecessary.

[Brief explanation of the drawing]

1 to 5 show an i embodiment in which the method of manufacturing a seat body according to the present invention is applied to an automobile seat cushion, and FIG.
The figure is a detailed cross-sectional view of part B in Figure 1, Figure 3 is a partially detailed cross-sectional view of the seat cushion showing the state of adhesion between the outer skin and pad components, and Figure 4 is a cross-sectional view showing the seam between the outer skin and the outer skin. , 5th
The figure is a perspective view of the pad parts of the seat cushion, and FIGS. 6 and 7 show other embodiments. FIG. 6 is a sectional view corresponding to FIG. 2, and FIG. 7 is a sectional view corresponding to FIG. 3. FIGS. 8 and 9 show still other embodiments, and FIGS.
The figure is a sectional view corresponding to FIG. 2, and FIG. 9 is a sectional view corresponding to FIG. 3. IO...Pad component, 16...Recess, 20.2OA, 20B...Skin, 22...Resin core, 24...Press device, 26...Upper die, 28...Lower die , 3o...Convex portion, 40...Clip, 42...Concave groove, 44...Belt.

Claims (4)

[Claims] (1) In a method for manufacturing a seat body in which a pad component is covered with two or more different skins, the two or more different skins are joined together in advance and a positioning means is provided along these joints. On the other hand, a concave portion is formed in the pad component at a position corresponding to the bonding portion between the skins, and a mold material is formed with a convex portion corresponding to the concave portion formed in the pad component. After positioning and fixing the skin to the mold by temporarily locking the positioning means provided on the integrally connected skin to the convex part formed on the mold, the convex part of the mold is attached to the pad component. A method of manufacturing a seat body, characterized in that the skin and the pad component are brought into contact with each other via an adhesive so as to be fitted into a recessed portion, thereby bonding them together. (2) Claim (1) in which the positioning means is a plate-shaped resin core sewn along the joint part, and is fitted into a recess formed in a convex part of the mold material and temporarily locked to the mold material. Method of manufacturing the seat body described. (2) The method of manufacturing a seat body according to claim (1), wherein the positioning means inserts a cylindrical or cylindrical core material into a closed cross section formed in the sewn portion. (3) The method for manufacturing a seat body according to claim (1), wherein the positioning means is a bead sewn along the joint portion. (4) A concave groove is formed in the convex part of the shape material, and the concave groove has a narrow opening on the entrance side of the positioning means, so that it holds the positioning means so that it cannot come out, and also prevents the positioning means from entering.
Claim (2) that is expandable when exiting
Or the manufacturing method of the seat body described in (3).