JP2023093227A - Seat Cover - Google Patents

Abstract

To obtain a seat cover which can suppress leakage of a seat pad material to the design surface side of the cover body when the cover body having an opening is molded integrally with the seat pad.SOLUTION: A seat cover 14 includes a cover body 18 which has an opening 16 and is molded integrally with a seat pad, and includes a cylinder part 20 which is provided at a peripheral edge part 16A of the opening 16 of the over body 18 so as to protrude to a seat pad 12 side. The cylinder part 20 is provided with a first overhang part 22 which overhangs continuously from the peripheral edge part 16A in a manner that maintains the size of the opening 16 or that narrows the opening 16 and is provided with a second overhang part 26 which overhangs continuously from the first overhang part 22 in a manner that further narrows the opening 16.SELECTED DRAWING: Figure 2

Description

The present invention relates to a seat cover integrally formed with a seat pad.

A seat cushion in which a seat cover and a seat pad are integrally formed has been conventionally known (see, for example, Patent Document 1).

JP 2014-193230 A

By the way, when the seat cover has an opening, a projection formed in a mold is inserted into the opening so that the opening is not blocked by the foaming seat pad. However, when the seat pad is foamed in the mold and integrated with the seat cover, the raw material of the seat pad enters the design surface side of the seat cover through the gap between the outer peripheral surface of the protrusion and the peripheral edge of the opening. There is a risk of leakage to

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a seat cover capable of suppressing leakage of the raw material of the seat pad to the design surface side of the cover body when the cover body having an opening is integrally molded with the seat pad. .

To achieve the above object, a seat cover according to claim 1 of the present invention includes a cover body having an opening and integrally molded with a seat pad, and a peripheral edge portion of the opening of the cover body. and a tubular portion provided so as to protrude toward the seat pad, wherein the tubular portion is continuous from the peripheral portion while maintaining the size of the opening or narrowing the opening. and a second projecting portion continuously projecting from the first projecting portion so as to further narrow the opening.

According to the first aspect of the invention, the cylindrical portion is provided at the peripheral portion of the opening of the cover body so as to protrude toward the seat pad. Then, the tubular portion has a first protruding portion continuously protruding from the peripheral portion while maintaining the size of the opening or narrowing the opening, and a first protruding portion to further narrow the opening. and a second overhanging portion continuously overhanging from. Here, when the seat cover is integrally molded with the seat pad, the projection formed in the mold protrudes so that the opening formed in the cover body is not blocked by the foamed seat pad. Although it is inserted through the opening, the opening is narrowed by at least the second protruding portion of the tubular portion. Therefore, at least the peripheral edge portion of the second protruding portion of the cylindrical portion is brought into close contact with the outer peripheral surface of the convex portion in the mold. That is, no gap is formed between the outer peripheral surface of the convex portion and the peripheral edge portion of the second projecting portion of the cylindrical portion. Therefore, when the cover body having the opening is integrally molded with the seat pad, the material of the seat pad is prevented from leaking to the design surface (the surface opposite to the seat pad side) of the cover body.

Further, the seat cover according to claim 2 is the seat cover according to claim 1, in which the second projecting portion is positioned with respect to the peripheral portion in a side view along the axial direction of the cylindrical portion. The angle of inclination toward the opening is larger than the angle of inclination of the first projecting portion toward the opening with respect to the peripheral portion.

According to the second aspect of the invention, in a side view along the axial direction of the cylindrical portion, the angle of inclination of the second projecting portion toward the opening with respect to the peripheral edge of the opening is is larger than the inclination angle of the first protruding portion toward the opening with respect to the . Therefore, compared to the case where the angle of inclination of the second projecting portion toward the opening with respect to the peripheral edge of the opening is the same as the angle of inclination of the first projecting portion toward the opening with respect to the peripheral edge of the opening, Adhesion between the outer peripheral surface of the convex portion in the mold and the peripheral edge portion of the second projecting portion in the cylindrical portion is improved.

Further, the seat cover according to claim 3 is the seat cover according to claim 1 or claim 2, wherein the first projecting portion is attached to the seat pad side of the peripheral portion by sewing, The second projecting portion is attached to the seat pad side of the first projecting portion by sewing.

According to the third aspect of the invention, the first projecting portion is attached by sewing to the seat pad side of the peripheral portion of the opening, and the second projecting portion is attached to the seat pad side of the first projecting portion. Attached by sewing. Therefore, the cylindrical portion configured to narrow the opening can be easily formed, and there is no concern that the sewn portion will impair the appearance of the design surface of the cover body.

Further, the seat cover according to claim 4 is the seat cover according to claim 1 or claim 2, wherein the first projecting portion is attached to the seat pad side of the peripheral portion by sewing, The second projecting portion is formed integrally with the first projecting portion.

According to the fourth aspect of the invention, the first projecting portion is attached by sewing to the seat pad side of the peripheral portion of the opening, and the second projecting portion is integrally formed with the first projecting portion. ing. Therefore, the cylindrical portion configured to narrow the opening can be easily formed, and there is no concern that the sewn portion will impair the appearance of the design surface of the cover body.

As described above, according to the present invention, when the cover body having the opening of the seat cover is integrally molded with the seat pad, it is possible to prevent the material of the seat pad from leaking to the design surface side of the cover body. can be done.

1 is a plan view showing a seat cushion in which a seat cover according to the first embodiment is integrated with a seat pad; FIG. 4 is an enlarged bottom view showing an opening of the seat cover according to the first embodiment; FIG. FIG. 4 is an exploded side view showing an enlarged part of a first projecting portion and a second projecting portion forming a cylindrical portion of the seat cover according to the first embodiment; FIG. 4 is a side view showing an enlarged part of the cylindrical portion of the seat cover according to the first embodiment; FIG. 4 is an enlarged side cross-sectional view showing a state in which a protrusion in a mold is inserted through an opening of the seat cover according to the first embodiment; FIG. 3 is a cross-sectional view taken along the line XX in FIG. 2 showing an enlarged state in which a seat pad is integrally formed with the seat cover according to the first embodiment; FIG. 3 is a cross-sectional view taken along the line YY in FIG. 2 showing an enlarged state in which a seat pad is integrally formed with the seat cover according to the first embodiment; FIG. 7 is a side view showing an enlarged part of a modification of the first projecting portion that forms the cylindrical portion of the seat cover according to the first embodiment; (A) is a bottom view showing an enlarged opening of a seat cover according to a second embodiment; (B) is an enlarged side view showing a first projecting portion and a second projecting portion forming a tubular portion of a seat cover according to the second embodiment; FIG. 9B is a cross-sectional view taken along the line ZZ in FIG. 9A showing an enlarged state in which the seat pad is integrally formed with the seat cover according to the second embodiment; FIG. 11 is a side cross-sectional view showing an enlarged state in which a protrusion in a mold is inserted through an opening of a seat cover according to a comparative example;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. For convenience of explanation, the arrow UP shown in each drawing is the upward direction of the seat cushion, the arrow FR is the front direction of the seat cushion, and the arrow LH is the left direction of the seat cushion. In the following description, when vertical, front-rear, and left-right directions are indicated without any particular mention, it indicates up-down direction of the seat cushion, front-rear direction of the seat cushion front-rear direction, and left-right direction of the seat cushion. and

<First embodiment>
First, the first embodiment will be explained. As shown in FIG. 1, the seat cover 14 according to the first embodiment is, for example, a cover for the seat cushion 10, and is integrally formed with the seat pad 12 (see FIG. 6). That is, the seat cover 14 is placed in a mold 30 (see FIG. 5), and urethane, which is the raw material of the seat pad 12, is filled in the mold 30 and foamed, so that the seat cover 14 is integrated with the seat pad 12. has been made

The rear end of the seat cushion 10 is formed with an opening 16 through which a child seat anchor (not shown) or the like for fixing a child seat (not shown) to the seat cushion 10 is inserted. That is, the seat cover 14 is formed with, for example, a square (rectangular) opening 16 in plan view, and a through hole 12A (see FIG. 6) communicating with the opening 16 is formed in the seat pad 12 as well. formed.

As shown in FIGS. 2 to 7, the opening 16 of the seat cover 14 is provided with a cylindrical portion 20. As shown in FIGS. That is, the seat cover 14 includes a cover body 18 having an opening 16 and integrally formed with the seat pad 12, and a peripheral edge portion 16A of the opening 16 of the cover body 18 and on the seat pad 12 side (cover body 18). and a cylindrical portion 20 provided so as to protrude to the side opposite to the design surface side of.

As shown in FIG. 2 , the tubular portion 20 according to the first embodiment has a substantially square tubular shape, and continuously extends from the peripheral edge portion 16A of the opening 16 so as to narrow the area of the opening 16 . A first projecting portion 22 projecting in the axial direction of the opening 16, and a first projecting portion 22 continuously extending in the axial direction of the opening 16 so as to further narrow the area of the opening 16. and a second overhanging portion 26 that overhangs.

As shown in FIG. 3, the first projecting portion 22 forming the cylindrical portion 20 is formed by sewing four pieces of first parts 24 each having an isosceles trapezoidal shape continuously in the circumferential direction of the opening 16 . It consists of Therefore, seam allowances 24A for joining by sewing are integrally connected to both ends of the first part 24 in the circumferential direction.

In addition, a seam allowance 24U for attaching to the peripheral edge portion 16A of the opening 16 by sewing is integrally connected to the upper end of the first part 24, and the seam allowance 24U allows each first part 24 (first The projecting portion 22) is sewn to the peripheral portion 16A of the opening 16. As shown in FIG. The lower end of the first part 24 is integrally formed with a seam allowance 24D for attaching the second protruding part 26 to the upper end of a second part 28, which will be described later, by sewing.

As shown in FIG. 3, the second projecting portion 26 forming the cylindrical portion 20 is formed by sewing four pieces of second parts 28 each having an isosceles trapezoidal shape continuously in the circumferential direction of the opening 16 . It consists of Therefore, seam allowances 28A for joining by sewing are integrally provided at both ends of the second part 28 in the circumferential direction. A seam allowance 28U is integrally provided at the upper end of the second part 28. By sewing the seam allowance 28U to the seam allowance 24D, the second part is attached to the lower end of the first part 24. 28 is attached.

Further, as shown in FIG. 4, in a side view along the axial direction of the tubular portion 20, the second part 28 (second The inclination angle θ2 of the projecting portion 26) toward the opening 16 is larger than the inclination angle θ1 of the first part 24 (first projecting portion 22) toward the opening 16 with respect to the peripheral edge portion 16A of the opening 16. It is

As a specific example, the inclination angle θ1 (outer angle at the upper end of the first part 24) is 135 degrees, and the inclination angle θ2 (outer angle at the upper end of the second part 28) is 145 degrees. It is In other words, the internal angle β (β=35 degrees) on the upper end side of the second part 28 is smaller than the internal angle α (α=45 degrees) on the upper end side of the first part 24 .

As a result, the area of the opening 16 is reduced by the first projecting portion 22 continuously projecting from the peripheral edge portion 16A of the opening 16 toward the axial center direction of the opening 16 so as to narrow the area of the opening 16. A second projecting portion 26 continuously projecting from the first projecting portion 22 toward the axial center direction of the opening 16 is formed so as to further narrow the space.

The first overhanging portion 22 is configured to extend continuously from the peripheral edge portion 16A of the opening 16 toward the axial direction of the opening 16 while maintaining the area (size) of the opening 16. may be That is, the angle of the first part 24 (the first projecting portion 22) with respect to the peripheral portion 16A of the opening 16 may be 90 degrees.

Next, the operation of the seat cover 14 according to the first embodiment configured as described above (method of manufacturing the seat cushion 10 in which the seat cover 14 and the seat pad 12 are integrally formed) will be described.

First, as shown in FIG. 11, a seat cover 15 according to a comparative example that does not have the cylindrical portion 20 will be described. The seat cover 15 is arranged in a mold 30 and molded integrally with the seat pad 12 . At this time, the opening 17 formed in the cover body 19 is protruded into the mold 30 so that the opening 17 is not blocked by the foaming urethane (raw material of the seat pad 12). The protrusion 32 is inserted.

Here, the outer shape of the projection 32 is formed to have substantially the same size as the inner shape of the opening 17 or slightly smaller. Therefore, when the mold 30 is filled with urethane (raw material of the seat pad 12) in this state, the urethane flows out from the gap between the peripheral edge portion 17A of the opening 17 and the outer peripheral surface 32A of the convex portion 32. There is a risk of leakage to the design surface (surface of the cover main body 19), which is the surface opposite to the seat pad 12 side of the seat cover 15 (indicated by a black arrow).

On the other hand, in the seat cover 14 according to the first embodiment, a cylindrical portion 20 projecting toward the seat pad 12 is attached to the peripheral portion 16A of the opening 16 of the cover body 18 by sewing. , to narrow the area of the opening 16 . Therefore, leakage as described above is suppressed or prevented. This will be explained below.

As shown in FIG. 5 , when the seat cover 14 is placed in the mold 30 and integrally molded with the seat pad 12 , the opening 16 formed in the cover body 18 is filled with the mold 30 . A convex portion 32 formed to protrude is inserted through. Here, as described above, the outer shape of the projection 32 is formed to have substantially the same size as the inner shape of the opening 16 or slightly smaller.

Therefore, the cylindrical portion 20 formed to narrow the opening 16, specifically, the first projecting portion 22 continuously projecting from the peripheral edge portion 16A so as to reduce the area of the opening 16, and the opening In order to further reduce the area of the portion 16, at least the peripheral edge portion 26A of the second projecting portion 26 of the second projecting portion 26 projecting continuously from the first projecting portion 22 is inserted through the convex portion 32 ( 32 A of outer peripheral surfaces are followed and closely_contact|adhered with the penetration).

That is, no gap is formed between the outer peripheral surface 32A of the convex portion 32 and the peripheral edge portion 26A of the second projecting portion 26. As shown in FIG. Therefore, even if the mold 30 is filled with urethane (the raw material of the seat pad 12) in this state, the urethane will not flow between the peripheral edge portion 26A of the second projecting portion 26 and the outer peripheral surface 32A of the convex portion 32. Therefore, it is possible to suppress or prevent leakage of air to the design surface (the surface of the cover main body 18 ) which is the surface of the seat cover 14 opposite to the seat pad 12 side. Therefore, in the manufacturing process of the seat cushion 10, the rate of occurrence of defective products can be reduced.

Moreover, as shown in FIG. 4, in a side view along the axial direction of the cylindrical portion 20, the angle of inclination θ2 of the second projecting portion 26 toward the opening 16 with respect to the peripheral portion 16A of the opening 16 is The inclination angle θ1 of the first projecting portion 22 toward the opening 16 side with respect to the peripheral edge portion 16A of the opening 16 is larger than the angle θ1.

Therefore, the inclination angle θ2 of the second projecting portion 26 toward the opening 16 with respect to the peripheral edge 16A of the opening 16 corresponds to the inclination of the first projecting portion 22 toward the opening 16 with respect to the peripheral edge 16A of the opening 16. Adhesion between the outer peripheral surface 32A of the projection 32 in the mold 30 and the peripheral edge portion 26A of the second projecting portion 26 can be improved as compared with the case where the angle θ1 is the same.

By foaming urethane in the mold 30, the seat pad 12 and the seat cover 14 are integrally molded as shown in FIGS. Here, as shown in FIGS. 6 and 7, the sewn portion between the cover main body 18 and the cylindrical portion 20 and the sewn portion between the first projecting portion 22 and the second projecting portion 26 of the cylindrical portion 20 are all It is arranged on the seat pad 12 side.

Therefore, there is no concern that the appearance of the design surface (the surface of the cover body 18), which is the surface of the seat cover 14 opposite to the seat pad 12 side, will be spoiled by the sewn portion. Further, the first projecting portion 22 is attached to the peripheral edge portion 16A of the opening 16 by sewing, and the second projecting portion 26 is attached to the first projecting portion 22 by sewing. It is possible to easily form the tubular portion 20 to be narrowed.

Further, as described above, since a gap is not formed between the peripheral edge portion 26A of the second projecting portion 26 and the outer peripheral surface 32A of the convex portion 32 in the cylindrical portion 20, the seat cover 14 can be kept in place even when the urethane is foamed. Positionability with respect to the mold 30 can be improved. In other words, it is possible to suppress or prevent the seat cover 14 from shifting with respect to the mold 30 .

Further, since the size of the opening 16 itself (the size of the peripheral portion 16A) does not change, even if the cylindrical portion 20 is provided, the workability of inserting the convex portion 32 into the opening 16 is reduced. There is no risk of being hindered by In addition, even if the opening 16 is narrowed by the cylindrical portion 20, the convex portion 32 can pass through the cylindrical portion 20, so that the operator can The load is small, and there is no possibility that the workability will be hindered.

It should be noted that the first projecting portion 22 forming the cylindrical portion 20 may have the shape shown in FIG. 8 . That is, the seam allowance 24A in the circumferential direction of the first part 24 may be formed in a generally arcuate shape protruding outward in the circumferential direction, or the four corners of the first part 24 may be formed in a generally arcuate shape. Also, although not shown, the first protruding portion 22 and the second protruding portion 26 may be integrated to form the shape shown in FIG. Furthermore, at that time, the boundary portion between the first protruding portion 22 and the second protruding portion 26 may be formed in a shape that continues at the inclination angle θ1.

<Second embodiment>
Next, a second embodiment will be described. In addition, the same code|symbol is attached|subjected to the site|part equivalent to the said 1st Embodiment, and detailed description (including a common effect|action) is abbreviate|omitted suitably.

As shown in FIGS. 9 and 10, in the seat cover 14 according to the second embodiment, the opening 16 formed in the cover body 18 is formed in a circular shape. The only difference from the above-described first embodiment is that the cylindrical portion 20 to be attached is formed as a single cylindrical piece.

That is, in the tubular portion 20, the first protruding portion 23 corresponding to the first protruding portion 22 and the second protruding portion 27 corresponding to the second protruding portion 26 are integrally formed through the virtual line K1. formed. A seam allowance 25U for attaching to the peripheral edge portion 16A of the opening 16 by sewing is integrally formed with the upper end portion of the first part 25 that constitutes the first projecting portion 23 .

Seam allowances 25</b>A that are sewn together are integrally connected to both ends in the circumferential direction of the first part 25 that constitutes the first projecting portion 23 . Similarly, seam allowances 29</b>A that are sewn together are integrally connected to both ends in the circumferential direction of the second part 29 that constitutes the second projecting portion 27 .

In order to narrow the opening 16, at least one end in the circumferential direction of the second projecting portion 27 is notched obliquely. That is, the second part 29 is formed in a trapezoidal shape, and the length of the lower end of the second part 29 is shorter than the length of the upper end of the first part 25 (the length of the imaginary line K1). ing.

Next, the operation of the seat cover 14 according to the second embodiment configured as described above (method of manufacturing the seat cushion 10 in which the seat cover 14 and the seat pad 12 are integrally formed) will be described.

When the seat cover 14 is arranged in the mold 30 and integrally molded with the seat pad 12, a projection 32 protruding into the mold 30 is formed in the opening 16 formed in the cover main body 18. is inserted. Here, as described above, the outer shape of the projection 32 is formed to have substantially the same size as the inner shape of the opening 16 or slightly smaller.

Therefore, the cylindrical portion 20 formed to narrow the opening 16, specifically, the first projecting portion 23 continuously projecting from the peripheral edge portion 16A so as to reduce the area of the opening 16, and the opening In order to further reduce the area of the portion 16 , at least the peripheral portion of the second projecting portion 27 of the second projecting portion 27 projecting continuously from the first projecting portion 23 is inserted (penetrated through) by the convex portion 32 . ), the outer peripheral surface 32A is followed and brought into close contact.

In other words, no gap is formed between the outer peripheral surface 32A of the convex portion 32 and the peripheral edge portion of the second projecting portion 27 . Therefore, even if the mold 30 is filled with urethane (raw material of the seat pad 12 ) in this state, the urethane will not flow from between the peripheral edge of the second projecting portion 27 and the outer peripheral surface 32</b>A of the convex portion 32 . It is possible to suppress or prevent leakage to the design surface (the surface of the cover main body 18 ) side, which is the surface opposite to the seat pad 12 side of the seat cover 14 .

Further, by foaming urethane in the mold 30, the seat pad 12 and the seat cover 14 are integrally molded as shown in FIG. Here, as shown in FIG. 10, the sewn portion between the cover main body 18 and the cylindrical portion 20 is arranged on the seat pad 12 side.

Therefore, there is no concern that the appearance of the design surface (the surface of the cover body 18), which is the surface of the seat cover 14 opposite to the seat pad 12 side, will be spoiled by the sewn portion. Further, the first projecting portion 23 is attached to the peripheral edge portion 16A of the opening 16 by sewing, and the second projecting portion 27 is formed integrally with the first projecting portion 23, so that the opening 16 can be It is possible to easily form the tubular portion 20 to be narrowed.

In the second embodiment, the first part 25 and the second part 29 may be vertically divided into two parts by the imaginary line K1 and joined together vertically by a seam allowance (not shown). . Similarly, the first part 25 and the second part 29 may be divided into two in the circumferential direction by the imaginary line K2 and joined together in the circumferential direction by a seam allowance (not shown). In other words, the tubular portion 20 may be composed of two or four parts.

The seat cover 14 according to the present embodiment has been described above with reference to the drawings, but the seat cover 14 according to the present embodiment is not limited to the illustrated one, and can be modified within the scope of the present invention. , the design can be changed as appropriate. For example, the shape of the opening 16 is not limited to the illustrated square shape or circular shape. Further, the cylindrical portion 20 may be formed integrally with the cover main body 18 instead of being provided as a separate member from the cover main body 18 .

12 Seat Pad 14 Seat Cover 16 Opening 16A Periphery 18 Cover Body 20 Cylinder 22 First Projection 23 First Projection 26 Second Projection 27 Second Projection

Claims (4)

a cover body having an opening and integrally molded with the seat pad;
a cylindrical portion provided so as to protrude toward the seat pad at the peripheral portion of the opening of the cover body;
with
The cylindrical portion is
a first overhanging portion continuously overhanging from the peripheral portion while maintaining the size of the opening or narrowing the opening;
a second projecting portion continuously projecting from the first projecting portion so as to further narrow the opening;
seat cover. In a side view along the axial direction of the cylindrical portion, the angle of inclination of the second projecting portion toward the opening with respect to the peripheral portion is 2. The seat cover according to claim 1, wherein the angle of inclination of the seat cover is larger than the angle of inclination to the side. 3. The first projecting portion is attached to the seat pad side of the peripheral portion by sewing, and the second projecting portion is attached to the seat pad side of the first projecting portion by sewing. A seat cover according to claim 1 or claim 2. The first projecting portion is attached to the seat pad side of the peripheral portion by sewing, and the second projecting portion is integrally formed with the first projecting portion. Seat cover described in.

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