JPH11244090A - Facing for head rest - Google Patents

Abstract

PROBLEM TO BE SOLVED: To take a measure against leak of a foaming material for cost reduction by forming an inlet for the foaming material at the middle of a pair of inserting holes on the line tying the holes for stay and tongues bent into a facing piece respectively in the inlet and both inserting holes. SOLUTION: A pair of tongues 13 for stay inserting holes are extended on the opposed edge, which is to be sewed with a facing piece 2, of a facing piece 1, a rectangular tongue 12 for pouring is extended at the middle of the tongues 13 for inserting hole, and, also on the facing piece 2, a tongue 22 for pouring and a tongue 23 for inserting are extended at a position corresponding to tongue 12, 13. When the superposition part of both facing pieces 1, 2 are to be sewed together, thread 6 is cut at tongues for pouring 13, 23 and tongues for inserting 12, 22 so as to provide a pouring inlet 7 for the foaming material and a pair of inserting holes 8 for stay. Thus the leak of the foaming material at foam forming can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest skin of a headrest of an integral skin type mounted on the upper end of a seat back of a vehicle or the like.

[0002]

2. Description of the Related Art With regard to a headrest provided at the upper end of a seat back of an automobile or the like, a plurality of skin pieces are sewn into a bag-like skin, and after inserting an insert into the skin, these are placed in a foaming mold. There is a manufacturing method in which a foaming material is injected into the skin to form the skin integrally. In this manufacturing method, conventionally, as shown in FIG. 7, two skin pieces a,
b, a part thereof is opened as an injection port c for the foaming raw material g, and the rest is sewn. On the other hand, as for the insertion hole d of the stay 91, a bag-like skin previously formed on one skin piece b is generally used. Has been used. Then, at the time of foam molding, the injection jig f is inserted into the injection port c, the skin around the injection port is stretched in the longitudinal direction of the injection port c (the outline direction in FIG. 7), and the opening is closed. And foaming raw material g from injection port c
Has been prevented from leaking out of the epidermis (see, for example,
168449, JP-A-7-31759).
In addition, measures have been taken to prevent the foaming raw material g from leaking from the insertion hole d by backing a ring-shaped seal packing j around the insertion hole (Japanese Patent Application Laid-Open No. 8-66572).

[0003]

However, when the bag-shaped skin as described above is used, an injection jig f is required. The tool f had to be kept in the inlet c, and the productivity was poor. Further, it is necessary to separately form the insertion hole d in the skin piece b, and in addition, the seal packing j must be prepared as a measure against leakage of the foaming raw material g.

The present invention solves the above-mentioned problems, and takes measures against leakage of the foaming material without using an injection jig for injecting the foaming material or a seal packing, thereby reducing the cost and further improving the productivity. It is intended to provide a skin for a headrest.

[0005]

In order to achieve the above object,
The gist of the present invention according to claim 1 is that a pair of stay insertion holes formed in the bottom surface portion, and an injection port of a foaming material formed in the middle of the two insertion holes substantially on a line connecting the two insertion holes,
And a tongue that bends into the epidermis is formed in each of the inlet and the two insertion holes. The gist of the present invention described in claim 2 is that
A headrest skin that consists of a plurality of skin pieces and is formed by suturing the overlapped portion where the edges of adjacent skin pieces are overlapped with each other to form a bag, and the edges of the two skin pieces overlap on the bottom part An overlapping portion is provided, and a sewing thread for suturing the overlapping portion is interrupted so that an insertion hole for a pair of stays is formed together with an injection port of the foaming material. Further, a skin is formed in the insertion hole and the injection port. A headrest skin, wherein a tongue piece that is bent inward is extended from each of the two skin pieces. Here, the “overlapping portion” refers to a portion where the seam line of the sewing thread runs at the base of the seam allowance of the skin piece.

According to the first and second aspects of the present invention, an injection port of a foaming material is formed in the middle of the two insertion holes substantially on the line connecting the two insertion holes, and the injection port has a tongue piece bent into the epidermis. When formed, the tongue of the injection port is pulled in the left-right longitudinal direction by preparing an insert having a stay-to-stay distance slightly longer than the length between the two insertion holes. It becomes plate-shaped and the tongue pieces come into close contact with each other to close the injection port. As a result, the injection port can be sealed without using any injection jig. In addition, when a tongue that bends into the skin is formed in the insertion hole, when the stay is inserted into the insertion hole, the tongue wraps around the stay, and the foam material leaks out of the insertion hole during foam molding. Can be prevented. Further, as in the invention of claim 2, when the suture for suturing the overlapped portion is interrupted so that the insertion hole of the pair of stays is formed together with the injection port of the foaming material, it is only necessary to partially stop the sewn portion. Since the insertion hole as well as the injection hole is formed, the production of the epidermis becomes very simple.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a headrest skin according to the present invention and a method for manufacturing the same will be described in detail. 1 to 6 show an embodiment of the headrest skin according to the present invention. FIG. 1 is a perspective view in which the headrest skin is turned upside down. FIG. 2 shows the headrest skin of FIG. 1 turned upside down. Perspective view,
FIG. 3 is a plan view of a skin piece constituting the headrest skin,
FIG. 4 is a partial cross-sectional view of the state where the stay is inserted into the insertion hole,
FIG. 5 is a partial perspective view showing another form around the insertion hole, and FIG. 6 is a longitudinal sectional view of a foaming mold showing a state in which a foaming material is injected into a headrest skin. The sewing thread 6 and the seam lines 61 to 68 shown in FIG. 3 are virtual ones which do not actually exist in this plan view. However, when sewn to the bag-shaped epidermis A, it is easy to indicate the position where each of the epidermis pieces 1 to 5 is sewn.

The headrest skin A is obtained by inserting an insert 9 into a bag-shaped skin, setting the insert 9 in a foaming mold T, injecting a foaming raw material g into the skin, and embedding the insert. It is an integral-mold type skin in which the skin-like skin and the foam molded body G are integrally molded. The skin A for the headrest is
It comprises a plurality of skin pieces cut into a predetermined shape and sewing threads 6 for sewing these pieces into a bag-like skin.
In the present embodiment, as shown in FIG.
5 is formed.

As shown in FIGS. 2 and 3, the skin piece 1 is responsible for a part of the bottom surface portion S of the headrest and the front surface on which the occupant's head contacts. The skin piece 2 and the skin piece 1 are responsible for the bottom portion S of the headrest. The skin piece 3 serves as a back surface. Skin piece 4,
5 carries both sides of the headrest. In the drawing, the mesh pattern indicates the design surface E. When each of the skin pieces 1 to 5 is turned upside down and these skin pieces are sewn, a bag-like skin A in an inverted state as shown in FIG. 1 is obtained. Seam allowances 1a to 5a are provided on the peripheral edges of the skin pieces 1 to 5 so that the peripheral edges can be overlapped and sewn.
Is provided.

[0010] As for the above-mentioned skin piece 1 and the skin piece 2 adjacent thereto, an overlapping portion 1 in which the peripheral edges are overlapped with each other.
By stitching the stitches 1 and 21, a stitch line 61 crossing the bottom surface portion S of the headrest is formed (FIG. 2). Here, the overlapping portions 11 and 21 are the skin pieces 1 and
2 means a portion where the sewing thread 6, that is, the stitch line 61 passes at the base of the seam allowances 1a and 2a. When the overlapping portions 11 and 21 are stitched together, both design surfaces are opposed to each other.

A pair of tongue pieces 13 for the insertion holes of the stays 91 are provided on the facing edge of the skin piece 1 at the opposing edges to be sewn to the skin piece 2 (FIG. 3). Further, a rectangular injection port tongue piece 12 extends between the two insertion hole tongue pieces 13 and 13. The tongue piece 22 for the injection port and the tongue piece 23 for the insertion hole also extend to the position corresponding to these tongue pieces 12 and 13 on the skin piece 2. The insertion hole tongue pieces 13 and 23 have a width enough to wrap the stay 91 when the stay 91 is inserted in a square shape, and a predetermined width is set so as to wrap around the stay 91 and prevent leakage of the foamed raw material g. There is height. Similarly, the inlet tongue pieces 12, 22
Also has a predetermined height to serve to prevent leakage of the foaming raw material g. These tongue pieces for injection port 13 and 23 and stay 91
The insertion hole tongue pieces 12 and 22 are disposed so as to be bent in an L-shape from the bottom surface S into the skin when the design surface E is a regular headrest skin A that appears on the front side (FIG. 6). ).

When the overlapping portions 11 and 21 of the skin pieces 1 and 2 are sewn, the sewing thread 6 is interrupted at the tongue pieces 13 and 23 for the injection port and the tongue pieces 12 and 22 for the insertion hole. Thus, a pair of stay insertion holes 8 are provided together with the injection port 7 for the foaming raw material g. Due to the formation of the stitch line 61, the injection port 7 is arranged between the insertion holes 8 on the line connecting the insertion holes 8. In order to form the insertion hole tongue pieces 12 and 22 (insertion hole 8) that are in close contact with the stay 91, the length of the portion where the sewing thread 6 is interrupted is made substantially equal to the diameter of the stay 91. Therefore, the sewing thread 6 enters into the tongue piece 13 and forms the stitch line 61b. In addition, since the stitch line 61b is inserted, the tongue pieces 13 and 23 are slightly opened and adjusted in FIG.

The distance between the two insertion holes 8 is set to be slightly shorter than the distance between stays inserted into the holes. Stay 91
When the tongue pieces 12 and 22 are inserted into the insertion holes 8, the tongue pieces 12 and 22 are pulled in the longitudinal direction (the direction of the arrow in FIG. 2). This is because the injection port 7 is closed in close contact and the leakage of the foaming raw material g to the outside of the skin during foam molding can be suppressed. The tongue pieces 12 and 22 for injection port are formed into a cylindrical shape by stitching lines 61a on both side edges of the tongue pieces 12 and 22 so that the tongue pieces are in close contact with each other and the mouth is easily closed (FIG. 1). As shown in FIG. 5, the tongue pieces 13 and 23 for the insertion holes are also formed by foaming when the tongue pieces 13 and 23 are brought into close contact with the stay 91 when the stays are inserted by inserting the seam lines 61c on both side edges of the tongue pieces 13 and 23. It is possible to more effectively suppress the leakage of the foaming raw material g through the insertion hole 8 at the time, which is more preferable.

The other skin pieces 3 to 5 also include the skin pieces 1,
Similarly to 2, the peripheral edges of the adjacent skin pieces are overlapped with the design surface E facing each other, and are stitched along the peripheral edges, thereby finally completing the bag-shaped skin. In particular,
In addition to the seam line 61 connecting the skin piece 1 and the skin piece 2,
The skin piece 1 and the skin piece 3 are sewn to form a seam line 62, the skin piece 2 and the skin piece 3 are sewn to form a seam line 63, and the skin piece 4 and the skin pieces 1 and 2 are sewn. Seam line 6
5, the skin piece 5 and the skin pieces 1 and 2 are sewn together to form a seam line 66, the skin piece 4 and the skin piece 3 are sewn together to form a seam line 67, and the skin piece 5 and the skin piece 5 are formed. By suturing the pieces 3 with each other to form a seam line 68, a bag-shaped headrest skin A having an inlet 7 and an insertion hole 8 can be completed (FIG. 1). Thereafter, when the skin A is turned upside down using the injection port 7, a regular pillow-shaped headrest skin A in which the design surface E appears outside as shown in FIG. 2 is completed.

The above-mentioned skin pieces 1 to 5 include, for example, a three-layer structure in which a urethane foam sheet and a polyurethane film are integrally laminated on a fabric skin, a solid polyurethane film lining the fabric skin, Alternatively, it is possible to use a material such as a cut pile fabric made of synthetic fibers such as acrylic or polyamide as pile yarn and grounded with cotton, rayon or the like.

Next, the procedure for finishing the headrest as a final product using the above-mentioned headrest skin A and the function of the skin will be described. To make a headrest product, first, a U-shaped insert 9 is inserted into the headrest skin A turned upside down. When the stay 91 of the insert 9 is inserted into the insertion hole 8, the stay 9 having a circular cross section is formed.
Since 1 enters the insertion hole 8, the center of the tongue pieces 13 and 23 is pressed outward, so that the tongue pieces 13 and 23 are formed into a half pipe shape and wound around the stay 91 (FIG. 4). Further, since the distance between the stays of the insert 9 used here is slightly longer than the distance between the insertion holes, when the stay 91 is inserted into the insertion hole 8, the skin pieces 1, 2 become the stay 9.
At 1, it is forcibly pulled outward (arrow in FIG. 2), and the tongue pieces 12 and 22 are in a state of being taut. Therefore, the tongue pieces 12 and 22 close the opening of the injection port 7 quickly.

Next, the skin A with the insert 9 inserted therein is set in the foaming mold T (FIG. 6). Subsequently, it plunged into the epidermis A push the nozzle R ₁ implanters R into the mouth of the inlet 7, and is poured predetermined amount foaming material g into said surface skin.

Thereafter, the foaming raw material g is foamed and hardened, thereby completing a headrest integrally formed with the skin. In the process of foaming and hardening of the foaming raw material g, as described above, since the tongue pieces 12 and 22 firmly close and seal the injection port 7, the foaming raw material g moves out of the epidermis from the injection port 7 in the foam molding step. There is no risk of leakage. Also, since the tongue pieces 13 and 23 are wound around the stay 91 to seal the insertion hole 8, the foamed raw material g does not leak out of the skin through the insertion hole 8. When the foam hardening is completed and the mold is removed, a desired headrest product in which the leakage of the foaming raw material g to the outside of the skin is suppressed by the sealing action of the skin itself has been completed.

The thus configured headrest skin A
Since the injection port 7 is arranged in a straight line with the stay insertion holes 8 and 8 and is disposed in the middle thereof, if the insert 9 whose distance between stays is slightly longer than the distance between insertion holes is used, The skin portion between the holes, that is, the tongue pieces 12, 22 can be firmly stretched without loosening, and both can be closed. Therefore, it is possible to prevent the leakage of the foaming raw material g to the outside of the skin at the time of foam molding without closing the injection port 7 using a conventional injection jig. The stay 91 has a tongue piece 1
Since 3 and 23 are wound, even if there is no seal packing,
Leakage of the foaming raw material g from the insertion hole 8 can be suppressed well. Thus, the skin A for the headrest of the present invention does not require an injection jig and a seal packing, which greatly contributes to cost reduction. Needless to say, since the injection jig is not used, the inconvenience of having to keep the injection jig in the injection port 7 until the foaming raw material g is foamed and hardened at the time of foam molding is released. Further, since the injection port 7 and the insertion hole 8 are formed simply by interrupting the sutures 6 to be sewn in the overlapping portions 11 and 21, their formation is extremely easy. The production becomes much easier than the conventional method in which the insertion hole 8 is separately formed by making a hole in the skin piece.

The present invention is not limited to the embodiment described above, but can be variously modified within the scope of the present invention depending on the purpose and application. Epidermis A, epidermis pieces 1 to 5, tongue pieces 12, 1
3, 22, 23, the shape and size of the injection port 7, the insertion hole 8,
The material, number and the like can be appropriately selected according to the application. In the embodiment, the fabric skin pieces 1 to 5 are sewn to form the skin A. However, the skin A may be formed by combining resin sheet bodies made of a blow molded product, an injection molded product, or the like.

[0021]

As described above, the skin for the headrest of the present invention can prevent the leakage of the foaming material at the time of the foaming molding by eliminating the injection jig and the seal packing, and furthermore, the trouble of separately opening the insertion hole. It has excellent effects such as cost reduction and productivity improvement.

[Brief description of the drawings]

FIG. 1 is an embodiment of a headrest skin of the present invention,
It is a perspective view in which the skin for headrests is turned upside down.

FIG. 2 is a perspective view in which the headrest skin of FIG. 1 is turned upside down.

FIG. 3 is a plan view of a skin piece constituting a headrest skin.

FIG. 4 is a partial cross-sectional view of a state where a stay is inserted into an insertion hole.

FIG. 5 is a partial perspective view showing another form around an insertion hole.

FIG. 6 is a longitudinal sectional view of a foaming mold showing a state in which a foaming material is injected into a headrest skin.

FIG. 7 is an explanatory perspective view of a conventional technique.

[Explanation of symbols]

 1-5 Skin piece 11, 21 Overlapping part 12, 22 Tongue piece (tongue piece for injection port) 13, 23 Tongue piece (tongue piece for insertion hole) 6 Thread 7 Inlet 8 Insertion hole 91 Stay A Skin (Headrest) Skin) S Bottom part (bottom) g Foaming material

Claims (2)

[Claims] 1. A pair of stay insertion holes formed in a bottom surface portion, and an injection port of a foaming material formed between the insertion holes substantially on a line connecting the both insertion holes, further comprising:
A skin for a headrest, wherein a tongue piece that bends into the skin is formed in each of the inlet and the insertion holes. 2. A headrest skin made of a plurality of skin pieces and formed by suturing an overlapped portion in which the peripheral edges of adjacent skin pieces are overlapped with each other to form a bag. A superimposed portion where the peripheral edges of the superimposed portions are superimposed is provided, and the suture for sewing the superimposed portion is interrupted so that an insertion hole for a pair of stays is formed together with the injection port of the foaming material. A skin for a headrest, wherein a tongue piece that bends into the epidermis extends from the two epidermis pieces at the inlet.