JP2019018607A - Vehicle seat - Google Patents

Abstract

To easily install a bead in a seam of mutual cover pieces for constituting a seat cover with an excellent outward appearance.SOLUTION: A seat 1 comprises mutually sewn two cover pieces 22 and 23 for constituting a cushion cover 20 and a bead 24 interposed between mutually sewn edge parts 22A and 23A of these cover pieces 22 and 23 and provided as an exposed state to an external part from between the respective edge parts 22A and 23A by collective sewing with the respective edge parts 22A and 23A. The bead 24 comprises a sewing part 24B interposed between the edge parts 22A and 23A of the respective cover pieces 22 and 23 and sewn to the respective edge parts 22A and 23A and a head part 24A exposed to an external part from between the respective edge parts 22A and 23A. The sewing part 24B comprises an outer peripheral wall 24B1 push-narrowed in a shape of elastically narrowing a shape width in the sewing direction more than the head pat 24A by fastening force by the collective sewing with the edge parts 22A and 23A of the respective cover pieces 22 and 23.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle seat. Specifically, the present invention relates to a vehicle seat including a seat cover that covers a seat pad.

  2. Description of the Related Art Conventionally, in a vehicle seat, a configuration in which a decorative bead is attached along a seam between cover pieces that constitute a seat cover is known (Patent Document 1). Specifically, the above-described ball edge is configured by a solid round bar-like member, and is set in a shape sandwiched between the edges of each cover piece and stitched together with each edge. The convex curved surface on the front side is exposed between the edges of the cover pieces and is attached to the edges.

Japanese Patent Laying-Open No. 2015-213697

  In the above prior art, the ball edge has a solid round bar-like configuration that is difficult for the sewing needle to pass through, and the stitching line with the edge of each cover piece is exposed to the outside from both sides of the convex curved surface. It has a poor-looking structure. The present invention was devised as a solution to the above-mentioned problem, and the problem to be solved by the present invention is to easily and easily attach a bead to a seam between cover pieces constituting a seat cover. is there.

  In order to solve the above problems, the vehicle seat of the present invention takes the following means.

  1st invention is a vehicle seat provided with the seat cover which coat | covers a seat pad. The vehicle seat includes two cover pieces that are stitched together to form a seat cover, and two cover pieces that are interposed between the stitched edges of the two cover pieces. And a ball edge provided as a state exposed to the outside from between the edges. The bead has a stitched portion that is interposed between the edges of each cover piece and is sewn to each edge, and a head that is exposed to the outside from between the edges. The stitching portion has a flexible portion that is squeezed into a shape that elastically narrows the shape width in the stitching direction from the head by a tightening force by stitching together with the edge of each cover piece.

  According to the first aspect of the present invention, when the edge of each cover piece is sewed against the stitched portion of the ball edge, each cover is attached to the flexible portion at the overhanging position before the stitched portion is pushed and narrowed. The stitching process can be performed by simply aligning the edges of the pieces. And by the said sewing, the seam of the stitch part of the said ball edge and the edge part of each cover piece is concealed on the back side of the head by the stenosis tightened by the stitching of the flexible part. As described above, it is possible to easily and easily attach the bead to the seam between the cover pieces.

  The second invention is the following configuration in the first invention described above. The stitched portion has a closed hollow cross-sectional outer peripheral wall connected to the head, and a partition wall extending in a shape of partitioning the hollow interior of the outer peripheral wall from the head vertically. The elastic force in the push-up direction that acts on the head by tightening force from both sides by stitching with the edge of each cover piece, forming the side walls partitioned by the partition wall of the outer peripheral wall Is suppressed by the tensioning action of the partition wall.

  According to the second aspect of the present invention, even if the ball edge has a continuous shape in which the stitched portion and the head are connected to each other, the head is pushed to the outside of each cover piece without pushing the head outward by stitching the stitched portion. It can be provided in a well-exposed state that fits between the edges.

  The third invention is the following configuration in the first or second invention described above. The bead is symmetrical twice on the front and back.

  According to this 3rd invention, it is set as the structure which has more workability | operativity which can use the bead provided with the structure which can be attached to the seam of the cover pieces simply and nicely in both front and back directions. be able to.

  According to a fourth invention, in any one of the first to third inventions described above, the following configuration is adopted. A recess capable of receiving a sewing needle for sewing is formed on the surface of the portion to be stitched with the edge of each cover piece of the flexible portion.

  According to the fourth aspect of the invention, when sewing the edge of each cover piece to the stitched portion of the ball edge, the sewing needle for sewing can be easily centered in the recess, and the stitching to an appropriate position can be performed more easily. Can be done.

1 is a perspective view illustrating a schematic configuration of a vehicle seat of Example 1. FIG. It is the II-II sectional view taken on the line of FIG. It is a perspective view of a ball edge simple substance. It is a schematic diagram showing the state which set the ball edge between the edge parts of two cover pieces. FIG. 5 is a schematic diagram illustrating a state in which the edge portions of two cover pieces are stitched together to the edge from FIG. 4.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

<< About schematic structure of sheet 1 >>
First, the configuration of the seat 1 (vehicle seat) according to the first embodiment will be described with reference to FIGS. In the following description, when directions such as front / rear, up / down, left / right, and the like are indicated, the directions shown in the drawings are indicated. In addition, the “sheet width direction” indicates the left-right direction of the sheet 1, the “sheet height direction” indicates the vertical direction of the sheet 1, and the “sheet front-rear direction” indicates. Indicates the front-rear direction of the seat 1.

  As shown in FIG. 1, the seat 1 according to the present embodiment is configured as an automobile seat, and includes a seat back 2 that serves as a backrest portion of a seated person, a seat cushion 3 that serves as a seating portion, and a headrest portion. It is set as the structure provided with the headrest 4 which becomes. The above-described seat back 2 has its left and right side lower ends resting on the rear end portions of the left and right sides of the seat cushion 3 via recliners (not shown) that function as a rotation shaft device capable of stopping rotation. It is connected so that the angle can be adjusted. The seat cushion 3 is connected to a vehicle floor in a state where the position of the seat in the front-rear direction can be adjusted via a pair of left and right slide rails (not shown). The headrest 4 is mounted on the upper portion of the seat back 2 from above.

<< About schematic structure of seat cushion 3 >>
The above-described seat cushion 3 includes a metal cushion frame (not shown) that forms the skeleton, a cushion pad 10 made of urethane foam that is set on the cushion frame and elastically receives the seating load of the seated person, and a cushion pad. 10 and a fabric cushion cover 20 that covers the entire surface of the seat cushion 3 and constitutes the design surface of the seat cushion 3. Here, the cushion pad 10 described above corresponds to a “seat pad” of the present invention. The cushion cover 20 corresponds to the “seat cover” of the present invention.

  The above-mentioned cushion frame (not shown) has a structure assembled in a substantially square frame shape in plan view, and can strongly support the outer peripheral part of the cushion pad 10 set on the upper part from below. It is set as the structure provided with intensity | strength. In the square frame of the cushion frame (not shown) described above, a plurality of springs (not shown) capable of elastically supporting the central portion of the cushion pad 10 set on the cushion frame 10 from below is planarly bridged.

  The cushion pad 10 is set in a state where it is covered from above by a cushion frame (not shown). Specifically, the cushion pad 10 described above is covered with the above-described cushion frame (not shown) from the upper side, and the front, rear, left, and right peripheral portions are respectively rotated downward through the outer peripheral side of the cushion frame. It is set in the locked state. As a result of the assembly, the cushion pad 10 is strongly supported from below by the cushion frame (not shown), and the central portion is planar from the bottom by a spring (not shown) bridged in the frame of the cushion frame. It is set as a state elastically supported by.

  The cushion cover 20 covers the cushion pad 10 described above from above, and the front, rear, left, and right peripheral portions thereof are drawn downward through the outer peripheral side of the cushion pad 10, respectively. It is fixed to the cushion frame. As a result of the assembly, the cushion cover 20 is stretched in a state of being in close contact with the entire surface of the cushion pad 10 and is held in a state where the cushion pad 10 is pressed onto the cushion frame and fixed in position. .

  By the way, the cushion pad 10 forming the basic shape of the seat cushion 3 described above forms a central portion in the seat width direction and supports the seat occupant's buttocks and thighs from below with a substantially flat surface shape. And the left and right top plate side portions 12 that form both side portions in the seat width direction and support the seated person's buttocks and thighs in a surface shape that rises obliquely from both outer sides.

  The cushion cover 20 includes a main cover piece 21 that covers the top plate main portion 11 of the cushion pad 10 described above, each side cover piece 22 that covers each top plate side portion 12, and each top plate side portion. 12, each of the gusset cover pieces 23 to be put on the outer surface (Kamachi), and these are stitched together to form a single bag. Between the edge portions 22A and 23A of the side cover pieces 22 and the kamachi cover pieces 23 of the cushion cover 20 described above, which are sewn together, these are made of resin for decorating the seam SL with a good appearance. The bead 24 is provided in a shape extending in a long shape along these seams SL.

  As shown in FIG. 2, each of the above-described ball edges 24 is sandwiched between edge portions 22 </ b> A and 23 </ b> A of the side cover pieces 22 and the respective kamachi cover pieces 23 of the above-described cushion cover 20, and these edges are sandwiched between them. The parts 22A and 23A are sewn together and attached. By mounting by the above-described joint stitching, each ball edge 24 protrudes to the front side in the shape of a convex curved surface between the edge portions 22A, 23A of each side cover piece 22 and each kamachi cover piece 23 which are stitched together. The state in which the portion 24A is exposed to the outside is a state in which the portion 24A is provided so as to extend along the tip portion protruding in a mountain shape in each top plate side portion 12 of the cushion pad 10 described above.

<< About the concrete composition of the portion where each ball edge 24 of cushion cover 20 was attached >>
Hereinafter, the specific structure of the location where each ball edge 24 of the cushion cover 20 is attached will be described in detail. That is, in the cushion cover 20 described above, the edge portions 22A and 23A of the side cover pieces 22 and the kamachi cover pieces 23 that are sewn together are bent back to the back side that is the side facing the cushion pad 10 described above. In this shape, each rim 24 is interposed between each other, and the rim 24 is sewn together with each rim 24 together.

  As shown in FIG. 3, each ball edge 24 described above is formed into a flexible substantially circular tube shape with a uniform cross section having a closed hollow cross section shape by injection molding of a resin material. Specifically, each of the above-mentioned bead edges 24 is formed as a head portion 24A in which each tube wall portion on both ends in the left-right direction in the figure, which is the front and back direction, is partially thickened. In addition, each ball edge 24 is configured as a stitched portion 24B in which the upper and lower tube wall portions in the figure that connect the head portions 24A are thinner than the head portions 24A.

  Each stitching portion 24B described above has the edge portions 22A and 23A of the side cover pieces 22 and the kamachi cover pieces 23 of the cushion cover 20 described above with reference to FIG. These edges 22A and 23A are sewn together. Specifically, as shown in FIG. 3, each stitching portion 24B is formed between a pair of opposed outer peripheral walls 24B1 forming a substantially flat tube wall connecting the heads 24A and the outer peripheral walls 24B1. It has a cross-sectional shape having a partition wall 24B2 that extends in the shape of partitioning the hollow interior between the heads 24A. Here, each outer peripheral wall 24B1 described above corresponds to a “flexible portion” of the present invention.

  In each of the pair of opposed outer peripheral walls 24B1 described above, a recess 24B1a that is recessed in a constricted shape in the pipe inner direction is formed so as to extend continuously in the longitudinal direction along the center portion in the circumferential direction. These recesses 24B1a are thinner than other portions (outer peripheral wall 24B1) by making the central portion in the circumferential direction of each outer peripheral wall 24B1 bend in a shape that partially curves in the pipe inner direction. Without being formed into a concavity-like shape in the inner tube direction.

  The respective edge portions 22A and 23A of the side cover pieces 22 and the kamachi cover pieces 23 of the cushion cover 20 described above are stitched to the stitched portions 24B having the above-described configuration as follows. . That is, first, as shown in FIG. 4, the edge portions 22A and 23A of the side cover pieces 22 and the kamachi cover pieces 23 of the cushion cover 20 described above that are stitched together are the outer peripheral walls 24B1 of the stitched portions 24B. Set it in a state where it is sandwiched between the two sides of the outer side of each. At that time, the edge portions 22A and 23A of the cover pieces 22 and 23 have a wide grounding surface in which each outer peripheral wall 24B1 is substantially flat. It is designed to be stably set in a surface contact state.

  Next, the cover pieces 22 are passed through the sewing needle S from above so as to penetrate through the edge portions 22A and 23A of the cover pieces 22 and 23 that are sandwiched between the outer peripheral walls 24B1 of the stitching portions 24B. , 23 and the stitched portions 24B are sewn together. Specifically, the edge 22A, 23A of each cover piece 22, 23 and each edge 24 are formed by a sewing jig so that the sewing needle S passes through the formation portion of the recess 24B1a in the outer peripheral wall 24B1 of each stitching portion 24B. The above-mentioned stitching is carried out by matching the positional relationship. As a result, as shown in FIG. 5, each outer peripheral wall 24 </ b> B <b> 1 brings the depressions 24 </ b> B <b> 1 a into close contact with each other by the tightening force by the stitching together with the edge portions 22 </ b> A and 23 </ b> A of the cover pieces 22 and 23. A state in which it is squeezed into a shape and is constricted in a hook shape between the heads 24A, and the stitched portions (seam SL) with the edges 22A and 23A of the cover pieces 22 and 23 are drawn inside. Are sewn together with the edge portions 22A and 23A of the cover pieces 22 and 23. The outer peripheral wall 24B1 of each stitching portion 24B described above can be squeezed in the tube inner direction (sewing direction D) with the sewing needle S (see FIG. 4) passed through the above-described recess 24B1a and the recess 24B1a as a base point. Therefore, it is possible to squeeze in the same shape regardless of the cross-section without varying the location of the stenosis.

  Therefore, as shown in FIG. 2, each ball edge 24 is exposed by the above stitching in a state where the front side head portion 24 </ b> A protrudes outside between the edge portions 22 </ b> A and 23 </ b> A of the cover pieces 22 and 23. As a state in which the head 24A on the back side is covered between the cover pieces 22 and 23 so as to face the cushion pad 10 inside, the cover pieces 22 and 23 are attached between the edge portions 22A and 23A of the cover pieces 22 and 23. . And each ball edge 24 is pushed by the above-mentioned stitching, and each seam SL, which is a stitched portion between the outer peripheral wall 24B1 and the edge portions 22A and 23A of the cover pieces 22 and 23, presses each outer peripheral wall 24B1. Due to the constriction, the head is pulled out so as to be hidden behind each head 24A, and is formed in a position that cannot be seen from the outside. Therefore, even if the bead 24 is stitched between the edges 22A and 23A of the cover pieces 22 and 23, the stitches SL are not exposed to the outside from between the edges 22A and 23A and the bead 24. Can be finished in good condition.

  Specifically, each of the bead edges 24 described above has a configuration in which a partition wall 24B2 extending in a vertical section is formed so as to connect between the heads 24A in the hollow interior. With the above configuration, each ball edge 24 is squeezed between the outer peripheral walls 24B1 (sewn together) when the edge portions 22A and 23A of the cover pieces 22 and 23 are stitched together to the stitched portions 24B. Even if a tightening force in the direction D) is applied, the elastic force in the pushing direction that acts on each head 24A from the outer peripheral wall 24B1 is suppressed by the stretching action of the partition wall 24B2, so that each head 24A moves in the front and back direction. It is not pushed out.

  Therefore, as shown in FIG. 2, the head 24A on the front side of each rim 24 is not protruded greatly from the edge 22A, 23A of each cover piece 22, 23 to the front side, so that the edge of each cover piece 22, 23 It can fit between the portions 22A and 23A. Similarly, the head 24 </ b> A on the back side of each ball edge 24 does not protrude greatly between the edge portions 22 </ b> A and 23 </ b> A of the cover pieces 22 and 23, so the cushion pad 10 on which the ball edge 24 is provided. It is not necessary to form a large receiving groove 12A for receiving the edge 24 at the apex portion of the mountain.

  As described above with reference to FIG. 4, each of the above-described ball edges 24 has a sewing portion 24B that is sewn to the edge portions 22A and 23A of the above-described cover pieces 22 and 23, and a fin-like sewing foot from the head 24A is simple. Unlike the shape that extends to the top, each outer peripheral wall 24B1 has a shape that projects a substantially flat surface shape at a position that extends outward from the head 24A in the initial state. A step on the grounding surface for setting the edge portions 22A and 23A of the cover pieces 22 and 23 between the portions 24A is difficult to be formed. Therefore, each ball edge 24 can set the edge portions 22A and 23A of the cover pieces 22 and 23 in a portion close to the head portion 24A and pass the sewing needle S with high accuracy to perform the suturing process. In addition, since each ball edge 24 is formed in a flexible substantially circular tube shape having a hollow cross-sectional shape, in which direction the lines along the edge portions 22A, 23A of the cover pieces 22, 23 are curved. However, the entire shape can be flexibly bent along the line, and stitching along the edges 22A and 23A of the cover pieces 22 and 23 can be appropriately performed.

  In addition, each edge 24 mentioned above is formed in the 2 times symmetrical shape which becomes the same shape even if the front and back are reversed. Therefore, each of the substantially circular tube-shaped edges 24 having a substantially flat surface shape on both sides may be set between the edges 22A and 23A of the cover pieces 22 and 23 in either front or back direction. Assembly work can be performed easily. Further, each of the above-mentioned bead edges 24 has a continuous shape in which each head 24A and each outer peripheral wall 24B1 of the stitching portion 24B are connected in a substantially circular tube shape, and therefore, as shown in FIG. , 23 are finished with a shape that both sides of the head 24A are smoothly curved toward the seam SL when the edges 22A and 23A of the head 23A are sewn, and edges are formed on both sides of the head 24A. It is designed to have a comfortable structure that does not stand up.

<Summary>
In summary, the sheet 1 of the present embodiment has the following configuration. That is, the vehicle seat (1) includes a seat cover (20) that covers the seat pad (10). This vehicle seat (1) is composed of two cover pieces (22, 23) stitched together to form a seat cover (20) and an edge portion of the two cover pieces (22, 23) stitched together. (24) A ball edge (24) provided as a state of being exposed to the outside from between each edge (22A, 23A) by stitching together with each edge (22A, 23A) interposed between (22A, 23A) And having. A stitch part (24B) in which a ball edge (24) is interposed between edges (22A, 23A) of each cover piece (22, 23) and is sewn to each edge (22A, 23A), and each edge And a head (24A) exposed to the outside from between the parts (22A, 23A). The stitching portion (24B) is more elastic in the shape width in the stitching direction (D) than the head portion (24A) due to the tightening force by the stitching together with the edges (22A, 23A) of the cover pieces (22, 23). It has a flexible part (24B1) that is squeezed into a shape narrowed to a narrow angle.

  With such a configuration, when the edges (22A, 23A) of the cover pieces (22, 23) are applied to the stitched portions (24B) of the ball edges (24) and stitched, the stitched portions (24B) The edge portions (22A, 23A) of the cover pieces (22, 23) are simply aligned with the flexible portion (24B1) in the protruding position before being narrowed (24B), and stitching is performed. Can do. And by the said stitching | suture, the seam (SL) of the stitching | suture part (24B) of the said ball edge (24) and the edge part (22A, 23A) of each cover piece (22,23) of a flexible region (24B1). It is hidden behind the head (24A) by the stenosis tightened by the stitching. As described above, the bead (24) can be easily and nicely attached to the seam (SL) between the cover pieces (22, 23).

  In addition, the closed portion (24B) having a closed hollow cross-section connected to the head (24A), and the hollow interior of the outer peripheral wall (24B1) is partitioned vertically from the head (24A). And a partition wall (24B2) extending. The flexible portion (24B1) forms both side walls partitioned by the partition wall (24B2) of the outer peripheral wall (24B1), and is sewn to the edge (22A, 23A) of each cover piece (22, 23). The elastic force in the push-up direction that is applied to the head (24A) by the tightening force from both sides is suppressed by the tensioning action of the partition wall (24B2).

  With this configuration, even if the ball edge (24) has a continuous shape in which the stitching portion (24B) and the head portion (24A) are connected, the head portion is sewn by stitching the stitching portion (24B). Without pushing up (24A) to the outside, the head (24A) can be provided in a state of being well-exposed between the edges (22A, 23A) of the cover pieces (22, 23).

  In addition, the ball edge (24) has a two-fold symmetrical shape on the front and back. By using such a configuration, the edge (24) having a configuration that can be easily and nicely attached to the seam (SL) between the cover pieces (22, 23) is used in either front or back direction. It is possible to achieve a configuration with better workability.

  Moreover, the hollow (24B1a) which can receive the sewing needle (S) for a sewing is carried out to the site | part surface sewn with the edge part (22A, 23A) of each cover piece (22,23) of a flexible part (24B1). Is formed. With such a configuration, when sewing the edges (22A, 23A) of the cover pieces (22, 23) to the stitched parts (24B) of the ball edge (24), a sewing needle for sewing is used. (S) can be easily centered in the recess (24B1a), and stitching to an appropriate position can be performed more easily.

<< About other embodiments >>
As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, the configuration according to the vehicle seat of the present invention can be widely applied to a vehicle used for various vehicles such as an aircraft and a ship, in addition to a vehicle other than an automobile such as a railway. Moreover, the structure which concerns on the vehicle seat of this invention is applicable also to other seat structures, such as a seat back, a headrest, an ottoman, and an armrest other than a seat cushion. Further, the configuration relating to the vehicle seat of the present invention is not limited to the stitched portion of the cover pieces that are put on the top plate side surface and the outer side surface (kamachi) in the seat structure, but the top plate main surface and the top plate side surface The present invention can also be applied to a stitched portion between other cover pieces, such as a stitched portion between cover pieces provided at an intermediate position.

  The above-described stitched portion of the cover pieces is not necessarily positioned at the tip apex portion protruding in the mountain shape of the seat pad, and may be positioned on a slope, a flat surface, a valley surface, or the like of the mountain. . In addition, when the said stitching part is positioned in a trough surface, the hanging tool for hanging and fastening the stitching part in the hanging groove formed in the seat pad separately is needed.

  Further, the ball edge does not necessarily have to be a shape in which the head and the outer peripheral wall of the stitching portion are continuously connected. In addition, the flexible part of the bead consists of a structure in which a cushioning material such as foamed urethane or rubber, which becomes the flexible part, is assembled to a stitched part that has been previously squeezed into a hook shape or the like. It may be.

1 seat (vehicle seat)
2 Seat back 3 Seat cushion 4 Headrest 10 Cushion pad (seat pad)
11 Top plate main part 12 Top plate side part 12A Receiving groove 20 Cushion cover (seat cover)
21 main cover piece 22 side cover piece 22A edge 23 kamachi cover piece 23A edge 24 bead 24A head 24B stitching part 24B1 outer peripheral wall (flexible part)
24B1a hollow 24B2 partition wall S sewing needle SL seam D stitching direction

Claims (4)

A vehicle seat provided with a seat cover for covering a seat pad,
Two cover pieces stitched together to form the seat cover;
A bead provided between the edges of the two cover pieces that are sewn together and exposed to the outside from between the edges by collectively stitching with the edges; Have
The bead has a stitched portion that is interposed between the edges of the cover pieces and is sewn to the edges, and a head that is exposed to the outside from between the edges,
The vehicle seat having a flexible portion in which the stitching portion is squeezed into a shape in which the shape width in the stitching direction is elastically narrowed from the head by a tightening force by stitching together with the edge of each cover piece. . The vehicle seat according to claim 1,
The stitched portion has a closed hollow cross-sectional outer peripheral wall connected to the head, and a partition wall extending in a shape of partitioning the hollow interior of the outer peripheral wall from the head in a vertical shape,
The flexible part forms both side walls partitioned by the partition wall of the outer peripheral wall, and pushes up the head by the tightening force from both sides by stitching with the edge of each cover piece A vehicle seat in which the elastic force of a direction is suppressed by the tension action of the partition wall. The vehicle seat according to claim 1 or 2,
A vehicle seat in which the rim is symmetrical twice on the front and back. The vehicle seat according to any one of claims 1 to 3,
A vehicle seat in which a recess capable of receiving a sewing needle for sewing is formed on a surface of a portion to be stitched with an edge of each cover piece of the flexible portion.

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