JP2001070078A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat for vehicles having an improved external appearance by a method wherein wrinkles are prevented from being produced concentratedly on the upholstery at a seat corner and such wrinkles at the corner can be dispersed. SOLUTION: A seat bask part 2 is turned backward and forward with respect to a seat cushion part 1 to adjust angles, and the seat back part 2 and the seat cushion part 1, a seat corner part 3 between the part 2 and the part 1 being included therein, are covered with the upholstery 9 integrally and continuously formed in terms of external appearance. In this case, in a skin 9C of the upholstery 9 which forms the corner part 3, a plurality of sewing connection parts 15 extending to the side of upholsteries 9a, 9B of the part 1 and part 2 are formed by sewing skins with each other. And in the process wherein the parts 15 are sewn together and the part 2 is turned from the rear to an upright direction, an elastic cord member 14 is provided to disperse deformation formed on the skin 9C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat and, more particularly, to a vehicle seat having a united feeling including a seat back portion and a seat cushion portion.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a seat structure mounted on an automobile. In the vehicle seat shown in the figure, a seat back portion 32 is connected to a seat cushion portion 31 via a reclining device 33, and the angle of the seat back portion 32 is set to an arbitrary inclination via an operation knob 34 of the reclining device 33. Can be adjusted. In such a seat structure, the cushion pad portion 36 and the back pad portion 37 in which the seat cushion portion 31 and the seat back portion 32 are independently formed are individually covered with dedicated skins 40 and 41, respectively. It is assembled so as to be held by the frame 38 and the back frame 39. The seat cushion portion 31 is disposed on the vehicle body panel side through a pair of slide races 35 and the like, and is adjusted in position with the seat back portion 31 in the vehicle interior. Code 3
6a and 36b are S springs provided on the cushion frame 38 and the pack frame 39.

[0003]

In the above-described seat structure, the cushion pad portion 36 and the back pad portion 3 are provided.
7 are independent of each other, and are integrally assembled with the frames 38, 39, the rotating arm of the device 33, and the like. In this assembly, a gap is set between the lower end portion 32a of the seat back portion 32 and the rear end portion 31a of the seat cushion portion 31 so that the seat back portion 32 does not hit the seat cushion portion 31 at the time of angle adjustment and rotation is not impaired. ing. For this reason, in the conventional structure, the seat back portion 3
The seat cushion 1 and the seat cushion 32 are externally independent from each other, and it is not possible to respond to a demand for improving this to give a sense of unity.

[0004] In order to impart a sense of unity to the exterior of the seat, the present applicants have integrated a back pad portion and a cushion pad portion with a corner pad portion (hinge pad portion) therebetween. The connected configuration was developed first (JP-A-11-32860). However, in this structure, for example, when the seat back portion is rotated from the rear to the front, wrinkles are concentrated in one place due to a slack generated in a skin portion covering the corner pad portion of the skin. There is a problem that tends to be. Once such concentrated wrinkles are formed, the wrinkles gradually become larger, not only impairing the appearance, but also the design feeling and the skin due to the sewing line set in the skin portion are formed from leather. In such a case, the design feeling and the like due to natural wrinkles are not maintained, and a quality problem develops despite the sense of unity.

The present invention solves the above problems. The purpose is to prevent the generation of wrinkles concentrated on the skin at the seat corners and disperse the wrinkles at this part even when the skin is formed to have a sense of unity with the sheet with a relatively simple structure. It is an object of the present invention to provide a vehicle seat that can improve the appearance by making it possible. Another object is to impart a sense of quality by dispersing the wrinkles and obtaining structurally similar wrinkles that occur naturally. Still other objects will be sequentially clarified in the contents described below.

[0006]

In order to achieve the above object, according to the present invention, as shown in FIGS. 1 to 3, the seat back portion 2 is rotated in the front-rear direction with respect to the seat cushion portion 1 to adjust the angle. A vehicle seat in which the seat back portion 2 and the seat cushion portion 1 are covered by a skin 9 integrally and continuously formed externally including a seat corner portion 3 therebetween, Of the skin 9, the skin 9C forming the seat corner 3 is sewn from the skin portion to the both skins forming the seat cushion 1 and the seat back 2. Forming a plurality of extending sewing connection portions 15;
In the process of being sewn to the sewing connection portion 15 and rotating the seat back portion 2 from the rear in the upright direction, the elastic string member 14 capable of dispersing the bending formed on the skin portion 9C of the seat corner portion 3 is formed. It is the structure which it had.

According to this sheet structure, the elastic cord member 14
Or, 14a is that the skin portion 9C of the seat corner portion 3 has the respective skin portions (for example, the upper side portion 10a and the upper middle portion 1
0c, the bend generated in the skin portion 9C when the seat back portion 2 is rotated from the rear to the upright direction by being sewn to the sewing connection portion 15 connecting the upper surface side portion 10a and the side surface portion 10b). It can be dispersed by elastic force. Therefore, at least the portion of the skin portion 9C to which the elastic string member 14 or 14a is attached does not have wrinkles concentrated at one place as in the related art. In addition, the dispersion form of the flexure of the present invention enables the flexure to be formed as a large number of fine wrinkles 17, and for example, natural fine wrinkles expected in the appearance of the sheet corner portion 3 when the skin portion 9C is made of leather. Similar to (a large number of small wrinkles generated by bending), it is possible to give an appearance corresponding to natural fine wrinkles, that is, a sense of quality.

Here, the elastic cord member 14 or 14 of the present invention is used.
It is required that a be sewn to the sewing connection portion 15 of the skin portion 9C, and that the bend formed in the skin portion 9C be dispersible when the seat back portion 2 is rotated from the rear to the upright position. . Formally, the elastic string member 14 is formed to have a string width corresponding to the dimension between the sewing connection portions 15 as shown in the examples of FIGS.
There is a mode in which the elastic band member 14a is formed of a plurality of elongated members, and a mode in which each of the elastic connection members 15a is separately sewn to each of the sewing connection portions 15. In any mode, each elastic cord member 14 or 14a has a slight tension, or
It is sewn to the sewing connection portion 15 without tension, and is arranged so that the upper and lower ends thereof reach both the skin portions 9A and 9B forming the seat cushion portion 1 and the seat back portion 2. The principle of dispersion or fine wrinkle formation utilizes the following operation. First
In the structure of FIGS. 2 and 3, when the seat back portion 2 is turned from the rear to the upright direction,
Alternatively, the position of 14a is regulated by the skin portions 9A and 9B which do not deform both ends, and tension in the shrinking direction is developed at the intermediate portion. This tension regulates the slack generated in the skin portion 9C sewn here, the slack is dispersed by the regulating force, and a number of fine lines 17 are formed on the skin portion 9C by an amount corresponding to the slack. Secondly, in the structure of FIG. 2, in addition to the above-described operation, in the process in which the seat back portion 2 is rotated from the rear to the upright direction, particularly, the upper surface side portion 10 a of the skin portion 9 C is in the width direction, that is, both sides. The elastic member 1
The number of fine wrinkles 17 is formed by the tension in the width direction 4 and the regulating force.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. This embodiment is a preferred specific example of the present invention and includes various technically preferable limitations, but does not limit the technical scope of the present invention.

FIG. 1 is a schematic half cross-sectional view showing a vehicle seat to which the present invention is applied, and FIGS. 2 and 3 are schematic cross-sectional views showing a main part of a skin of the present invention. A in FIG.
(B) is the same as FIG.
FIG. 4 is an external view of a main part of the skin as viewed from the direction of arrow D in FIG. FIG.
(A), (b) is a schematic sectional view which shows operation | movement of a principal part along the BB line of FIG. In the vehicle seat of FIGS. 1 and 3, the seat back 2 is connected to the seat cushion 1 via the reclining device 4, and the operation knob 5 of the reclining device 4 is operated to operate the seat back 2. The seat cushion portion 1 is disposed via a slide rail 7 having an upper rail and a lower rail fitted to each other on the vehicle floor side and a leg bracket 6, and a seat cushion portion 1 is provided. The configuration in which the position can be adjusted in the front-rear direction together with the back portion 2 and the like are the same as those in the related art. The main improvement lies in the structure of the seat corner 3 between the seat cushion 1 and the seat back 2. Next, this main part will be described in detail.

The cushioning pad includes a cushion pad portion 11 forming a horizontal seat portion, and a back pad portion 1 serving as a backrest standing upright on the rear side of the cushion pad portion 11.
2 and a corner pad portion 13 provided between both pad portions 11 and 12, and these are formed as an integral body by urethane foam or the like. Further, the corner pad section 13 is designed to be thinner than the cushion pad section 11 and the back pad section 12, and
In contrast, when the seat back portion 3 is rotated, the rotation of the seat back portion 3 is not impaired, and the seat cushion portion 1 has a sense of unity in appearance.
In addition, a holding characteristic continuous with the seat back portion 2 can be obtained. In addition, as the corner pad section 13,
For example, the seat back portion 2 is formed to be softer than the pad portions 11 and 12 or by opening an intermediate portion.
In some cases, the structure may be configured to reduce a load or a stress received when the device rotates.

The skin 9 covering the cushioning pad includes a skin portion 9A having an open lower side capable of covering the cushion pad portion 11 from above and a part of the back surface capable of covering the back pad portion 12 from the front side. The open skin portion 9B and the skin portion 9C interposed between the two skin portions 9A and 9B are integrally formed. Further, in the skin 9, since the both sides of the seat and the seat main portion are formed to have a continuous appearance in the vertical direction, as the skin forming material, the side upper surface portion 10a and the side surface to which the present invention is applied as shown in FIG. Part 10
The seat side portion is constituted by b and the like, and the intermediate upper surface portion 10c is arranged between both side upper surface portions 10a. And
The outer edge of the side upper surface portion 10a and the corresponding edge of the side surface portion 10b, and the inner edge of the side upper surface portion 10a and the corresponding edge of the intermediate upper surface portion 10c are respectively overlapped and connected by sewing, and Are formed as one piece. Therefore, each sewing connection portion 15 of this example
Is provided continuously from the skin portion 9A to the skin portion 9B side with the skin portion 9C interposed therebetween, and expresses a corresponding unique sewing line 16 as shown in FIG. 1 and the like.

The material of the skin 9 is leather (not shown in the drawing, but is provided with a backing material), but may be a cloth material or a resin material. Moreover, the whole material does not need to be the same material, for example, leather may be partially used. In short, different materials may be used as long as a sense of unity can be obtained in appearance. Further, each of the skin portions 9A, 9B, and 9C may be made of a divided skin forming material. In that case, the corresponding edge portion of the skin portion 9C is connected to the rear edge of the skin portion 9A and the lower edge of the skin portion 9B by sewing.

As shown in FIG. 2, an elastic cord member 14 is attached to the back surface of the side upper surface portion 10a of the above-mentioned skin portion 9C in a state of being sewn to the sewing connection portions 15 on both sides. That is, the elastic cord member 14 is a rubber cord that freely expands and contracts, and as shown in FIG. 2A, the string width corresponds to the side upper surface portion 10a, and both edges correspond to the sewing connection portion 15. Each is sewn together.
In terms of length, the skin portion 9 forming the sheet corner portion 3
Skin portions 9A and 9B slightly longer than C and upper and lower ends correspond
Has reached the side. As described above, the skin 9 may be formed of a skin forming material in which the skin portions 9A, 9B, and 9C are divided as described above. In this case, the elastic string member 4 is attached to the skin 9
A, 9B may be connected to the sewing connection on the corresponding edge side. Then, the elastic string member 14 is sewn to the sewing connection portion 15 with a slight vertical tension or without tension, but is sewn together with the sewing connection portion 15 by devising a sewing process. May be.

FIG. 3 shows another example of the structure of the elastic cord member 14. As shown in FIG. The elastic string member 14a is a rubber string having a narrow string width as shown in FIG. 3A, and is sewn to each of the sewing connection portions 15 independently. Figure 2 shows the length requirements
Is the same as

On the other hand, in the seat frame, the cushion frame 21 and the back frame 22 are connected via the base 4a of the reclining device 4, the rotating arm 4b, and the like. In the reclining device 4, the rotation arm 4 b is connected to an arm 23 fixed to a corresponding portion of the back frame 22, and the adjustment mechanism (not shown) is operated by the operation lever 5 to adjust the angle of the seat back 2. Things. The cushion frame 21 is formed of a metal container, has a plurality of S springs 24a stretched thereon, and has a base 4 of the link inning device 4 at a rear portion on both sides.
a is attached. The back frame 22 has a substantially U shape or a frame shape formed by bending a metal pipe, and an auxiliary frame 22a attached to the inside of the back frame 22 in a state where a plurality of S springs 24b are stretched. It has a stay holder 25 and the like which are attached and hold a headrest (not shown). The back frame 22 is rotatably connected to the cushion frame 21 via a rotation arm 4b of the reclining device 4 or the like.

In the above-described seat structure, the assembling procedure is such that each of the pad portions 11, 12, and 13 is covered with the corresponding skin portions 9A, 9B, and 9C, and each of the frames 2
After being placed on the upper and lower surfaces of the outer skin 9C, the terminal portions of the outer skin 9 are engaged with corresponding portions of the frames 21 and 22 by hooking or the like. In this case, as shown in FIG. The surfaces 10b may be connected to each other by a skin portion on the rear side, and the corner pad portion 13 may be processed so as to be covered inside the skin portion 9C. Although not shown in the drawings, a decorative back garnish or the like is attached to the back side of the back frame 22 so that the inside is not visible.

FIGS. 4A and 4B are schematic diagrams for explaining the operation of the vehicle seat configured as described above.
Then, next, the deformation | transformation operation | movement of the skin part 9C in the skin 9 when the seat back part 2 is rotated back and forth is demonstrated. First, in the vehicle seat, when the seat back portion 2 is rotated forward or backward, the corner pad portion 1 interposed between the seat cushion portion 1 and the seat back portion 2 is provided.
3 is elastically deformed in conjunction with the rotation of the seat back portion 2 to allow the seat back portion 2 to rotate. That is, as shown in FIG. 4A, when the seat back portion 2 is rotated rearward, the skin portion 9C of the corner pad portion 13 is placed on the lower end side of the seat back portion 2 while receiving tension from the seat back portion 2 side. Drawn. At this time, the skin portion 9C is in a state close to the initial state in which the elastic cord members 14 are connected by the above-described sewing, and a sewing line 16 is continuously formed on the upper surface of the skin portion 9C as shown in the upper circle in FIG. And little wrinkles have not appeared. And the seat back part 2 is shown in FIG.
In the process of being turned from the rear to the upright direction as shown in (b), the corner pad portion 13 is bent while receiving a compressive load, and at the same time, the skin portion 9C tends to form slack accompanying the curved deformation. However, the elastic cord members 14 attached to the back surface have the upper and lower skin portions 9A, 9B which are not deformed.
The upper side portion 10a and the adjacent side portion 10b
In addition, the slack generated in the upper middle portion 10c is regulated, the slack is dispersed by the regulating force, and a large number of fine lines 17 are formed mainly in the upper side portion 10a. The fine wrinkles 17 shown in the upper circle of FIG. 4 (b) schematically show those formed in this manner. Accordingly, in the skin portion 9C, when the seat back portion 2 is adjusted in angle forward, there is no fear that wrinkles are concentrated at one place as in the related art, and it is possible to eliminate the troubles caused by the wrinkles. Since the fine wrinkles 17 are similar to naturally occurring fine wrinkles, a sense of quality can also be achieved.

[0019]

As described above, in the vehicle seat according to the present invention, since the seat back portion and the seat cushion portion are at least externally covered with the integrally formed skin, a sense of unity is obtained. Secured. As described above, even when the vehicle seat has a sense of unity, the seat back portion is sewn to the sewing connection portion to form the seat cushion portion and the seat back portion in the process of being rotated from the rear to the upright direction. By the elastic string member extending to each skin part side, the deflection of the corresponding skin part is dispersed,
Since it can be formed as fine wrinkles, the disadvantage that wrinkles are concentrated at one place as in the related art can be solved, and the effects such as better appearance can be maintained.

[Brief description of the drawings]

FIG. 1 is a schematic half sectional configuration view of a vehicle seat according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a skin portion of the present invention along the line AA in FIG.

FIG. 3 is a schematic configuration diagram showing another structure of the skin portion.

FIG. 4 is a schematic sectional view showing an operation of a main part of the vehicle seat.

FIG. 5 is a diagram for explaining a problem of a conventional seat structure.

[Explanation of symbols]

1 is a seat cushion portion, 2 is a seat back portion, 3 is a seat corner portion, 4 is a reclining device, 9 is a skin (9A, 9B, and 9C are skin portions corresponding to reference numerals 1, 2, and 3). Is a side surface portion, 10c is an upper middle portion, 11 is a cushion pad portion, 12 is a back pad portion, 13 is a corner pad portion, 14, 14a are elastic string members, 15 is a sewing connection portion, 16 is a sewing line, and 17 is fine lines.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B60N 2/20 B60N 2/20

Claims (4)

[Claims] A seat back portion is rotated in the front-rear direction with respect to a seat cushion portion to adjust an angle, and the seat back portion and the seat cushion portion are externally provided including a seat corner portion therebetween. A vehicle seat covered with a continuously formed integrally formed skin, wherein, among the skins, a skin portion forming the seat corner portion is formed by sewing the skin portions together, and the seat cushion portion is formed. And a plurality of sewing connection portions extending to both skin portions forming the seat back portion, and the sewing portion is sewn to the sewing connection portion to turn the seat back portion from the rear to the upright direction. A vehicle seat, comprising: an elastic cord member capable of dispersing a deflection formed on a skin portion of the seat corner portion in a moving process. 2. The sewing apparatus according to claim 1, wherein the elastic string member is formed with a string width corresponding to a dimension between the sewing connection sections, and both sides of the string width are sewn to corresponding sewing connection sections. The vehicle seat according to the above. 3. The vehicle seat according to claim 1, wherein the elastic band member is formed of a plurality of elongated members, and each of the elastic band members is independently sewn to each of the sewing connection portions. 4. The elastic band member develops an elastic force in the process of rotating the seat back portion from the rear to the upright direction to form fine wrinkles at a portion corresponding to a skin portion of the seat corner portion. Item 4. The vehicle seat according to any one of Items 1 to 3.