JP2001354057A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To preclude strange feeling from being felt when seated. SOLUTION: A cushioning material 3 is formed of the first cushioning material 5 of relatively low flexibility positioned on the seat bottom plate 2 side, and the second cushioning material 6 of relatively high flexibility layered on the first cushioning material 5. A tension member 13 is connected to a fusing part 12 for connecting fellow end parts of a skin 4. The skin 4 is pulled by the tension member 13 to position the part 12 on the inside of the first cushioning material 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat provided with a tension member for pulling a part of a skin covering a cushion material toward a seat bottom plate.

[0002]

2. Description of the Related Art Among conventional vehicle seats of this kind,
For example, a motorcycle seat has a structure in which a cushion material is provided on a seat bottom plate, and the outer surface of the cushion material is covered with a skin. The skin holds the cushioning material on the seat bottom plate so that the shape of the cushioning material does not significantly change, and is partially tensioned so that irregularities are formed on the outer surface of the seat to improve the appearance of the seat. The member is pulled toward the seat bottom plate.

[0003] The tension member is constituted by a button-shaped tension fitting positioned on the outer surface of the skin, a string pulling the tension fitting toward the seat bottom plate, and the like so that the outer surface of the sheet is depressed. The structure is such that the outer skin is pressed against the seat bottom plate by a tensioning metal fitting.

[0004]

In the conventional vehicle seat constructed as described above, the button-shaped pulling metal fitting is exposed on the outer surface of the seat, so that when the occupant is seated, a foreign-body sensation is given. There was a problem. Such inconvenience can be solved to some extent by pulling the skin without using a button-shaped pulling bracket. However, since the epidermis is easily torn, it cannot be pulled directly by a string or the like.

As a sheet having a structure in which the skin is pulled while preventing the skin from being torn, for example, JP-A-10-2
There is a sheet disclosed in Japanese Patent No. 97561. The seat disclosed in this publication has a structure in which a hook is fixed to a welded portion of a skin, and the hook is pulled toward a sheet bottom plate by a string. However, the welded portion of the skin and the hook are also extremely hard as compared with the cushioning material. Therefore, even if the configuration shown in this publication is adopted, the feeling of foreign bodies at the time of sitting cannot be eliminated.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a vehicle seat that does not give a foreign object feeling when seated.

[0007]

In order to achieve this object, a vehicle seat according to the present invention comprises a first cushion material having a relatively low flexibility, which is located on a seat bottom plate side, and a first cushion material having a relatively low flexibility. A second cushion material having a relatively flexibility that is superimposed on the first cushion material, and a tensile member is connected to a welded portion connecting end portions of the skin, and the welded portion is formed of the second cushion material. The structure is such that the skin is pulled by a tension member so as to be located inside the cushion material. ADVANTAGE OF THE INVENTION According to this invention, the welding part of a relatively hard skin and a tension member come to be embedded in the inside of a 1st cushioning material, and the 2nd cushioning material and a skin which are relatively flexible have a relatively high elasticity. The soft portion forms the outer surface of the seating portion of the seat.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) One embodiment of a vehicle seat according to the present invention will be described below in detail with reference to FIGS. Here, an embodiment in which the present invention is applied to a motorcycle seat will be described.
FIG. 1 is a perspective view showing a single seat for a motorcycle, and FIG.
3 is a perspective view showing the structure of the welded portion of the skin, FIG. 3 is a sectional view taken along line III-III in FIG. 1, and FIG. 4 is a sectional view taken along line IV-IV in FIG.

In these figures, reference numeral 1 denotes a motorcycle single seat (hereinafter simply referred to as a seat). The seat 1 has a structure in which a cushion material 3 is placed on a seat bottom plate 2 (see FIG. 2), and an outer surface of the cushion material 3 is covered with a skin 4.

As shown in FIG. 2, the cushion member 3 has a first cushion member 5 adhered to the upper surface of the seat bottom plate 2 and a second cushion member adhered to the upper surface of the first cushion member 5.
And the cushion material 6. Each of these cushion members 5, 6 is formed to have flexibility by urethane foam. First cushion material 5
Uses a material having less flexibility than the second cushion material 6, and the second cushion material 6 is made of a material having relatively flexibility so that the occupant easily deforms when seated. Use things.

As shown in FIG. 1, the outer skin 4 covers the outer side of the cushion material 3 over the entire area.
And an upper skin 8 that is connected to the upper edge of the side skin 7 by sewing and covers the upper portion of the cushion material 3. A sewn portion connecting the side skin 7 and the upper skin 8 is indicated by reference numeral 9 in FIG.

The side skin 7 has a non-woven fabric (not shown) attached to the back surface thereof in order to improve the strength of the side of the seat. As shown in FIG. 1, the upper skin 8 is cut into a linear shape extending in the front-rear direction on both sides such that a wrinkle 10 extending in the front-rear direction of the seat 1 and a wrinkle 11 extending in the vehicle width direction are formed. At the same time, one central portion in the front-rear direction is cut into a line extending in the vehicle width direction, and the ends (cut ends) of the upper skin 8 formed by the cutting are pulled together as shown in FIG. Welded.

These welded portions are denoted by reference numeral 12 in FIG.
Indicated by The end of the upper skin 8 having the welding portion 12 is
The slits 13 and 14 (see FIGS. 1, 3 and 4) formed in the first and second cushion members 5 and 6 are viewed from above, and the tension members 15 are provided at eight locations indicated by circles A in FIG.
(See FIGS. 2 to 4), which are pulled toward the seat bottom plate 2 by the pulling members 15. Slit 13,
The welded portion 12 is formed on the skin 8 at a position corresponding to 14.

Of the two types of slits 13 and 14,
As shown in FIG. 3, the slit 13 penetrates through an upper portion 15 a formed in the second cushion material 6 so as to penetrate the second cushion material 6 and a portion of the first cushion material 5 corresponding to the tension member 15. Hole 15b formed as described above
And a groove 15c extending laterally from the hole 15b along the upper part 15. That is, the slit 13 is formed such that both ends in the longitudinal direction penetrate the first and second cushion members 5 and 6, and a portion between these two ends is formed in a groove shape that opens upward. I have. The tension member 15 is accommodated in the penetrating portion (the upper portion 15a and the hole-shaped portion 15b). On the other hand, the slit 14
As shown in FIG. 4, the upper part 14a is formed to penetrate the second cushion material 6, and the lower part 14b is formed to penetrate the first cushion material 5, Both ends are connected to the slit 13.

Although the slit 14 is formed so as to penetrate the two cushion members, in this embodiment, the slit 14 is formed in a portion where the load applied to the seat is relatively small. The sheet 1 does not lose its shape. In order to prevent the seat 1 from becoming out of shape, the relatively long slit 13 is formed in a groove shape so that the first cushion material 5 is not divided by the slit 13.

The tension member 15 is connected to the welding portions 12, 1
A string 15 having one end tied to the cut end of the skin 8 having
a and a holding piece 15b tied to the other end of the string 15a
The string 15a is passed through the slits 13 and 14, and the holding pieces 15b are engaged with the opening edges of the slits 13 and 14 on the sheet bottom plate 2 side. The length of the string 15a is set such that the welded portion 12 is located inside the first cushion material 5, as shown in FIGS.

By pulling the welded portion 12 of the upper skin 8 with the tension member 15 in this manner, the welded portion 12 is pulled downward, and comes to face the inside of the first cushion material 5 from above. As a result, wrinkles 10 and 11 are formed on the outer surface of the sheet as described above, and unevenness is formed on the upper surface of the sheet, so that the appearance of the sheet can be improved. In addition, the second cushion material 6 having relatively high flexibility
The second cushion material 6 can be held by the skin 4 so that the so-called shape does not collapse.

In order to manufacture the sheet 1 constructed as described above, first, a first cushion material 5 and a second cushion material 6 are formed, and these cushion materials 5 and 6 are bonded to each other. A cushion material assembly (cushion material 3) is formed. At the same time, the upper skin 8 and the side skin 7 are sewn together by sewing to form one skin 4. A cutting line is formed on the upper skin 8 of the outer skin 4 before or after sewing, and the cut ends are welded to each other to form a welded portion 12.

The cord 15a of the tension member 15 is
After that, the skin 4 is put on the cushion material assembly, and the string 15a and the holding pieces 15b are inserted into the slits 13 and 14 of the cushion material 3. The holding piece 15b
Is pulled out through the slits 13 and 14 to the back side of the cushion material (to the side of the seat bottom plate 2), and is engaged with the opening edges of the slits 13 and 14. The length of the string 15a is determined in advance, and the holding piece 15b is
Engagement with the opening edge of 14 allows the welded portion 12 of the upper skin 8 to be positioned inside the first cushion material 5. After attaching the tension member 15 in this manner, the cushion material assembly is placed on the seat bottom plate 2,
The lower end of the side skin 7 is fixed to the lower surface of the seat bottom plate 2 with a tucker.

Therefore, the sheet 1 thus configured
According to this, the welded portion 12 of the skin 4 and the tension member 15 that are welded in a line shape rather than a point and become relatively hard are embedded in the interior of the first cushion material 5, and are relatively flexible. The seating portion of the seat 1 is formed by the second cushioning material 6 having the following and the relatively soft portion (the upper skin 8) of the skin 4.

(Second Embodiment) The present invention can be applied to a tandem seat and a backrest of a motorcycle as shown in FIGS. FIG. 5 is a perspective view showing a tandem seat for a motorcycle, and FIG. 6 is a cross-sectional view showing an enlarged main part. FIG. 5 is a cross-sectional view taken along line VI-VI in FIG. 7 (a) is a perspective view, FIG. 7 (b) is a longitudinal sectional view, and FIG. 7 (c) is a sectional view taken along line CC in FIG. 7 (a). d) is a developed view of the epidermis. In these figures, the same or equivalent members as those described with reference to FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description is omitted.

The tandem seat 21 shown in FIG. 5 is used as a rear seat of a motorcycle, and the backrest 22 shown in FIG. 7 is used as a backrest of a passenger sitting on the rear seat of the motorcycle. is there. The tandem seat 21 has a structure in which a first cushion material 5 and a second cushion material 6 are superimposed on a seat bottom plate 2 in the same manner as the single seat 1 shown in the first embodiment. , 6 are covered with a skin 4.

The skin 4 of the tandem sheet 21 has six welded portions 12 formed on the upper skin 8 (circled B in FIG. 3).
Are drawn to the seat bottom plate 2 side by the pulling member 15 as shown in FIG. This tandem seat 2
1, the welding portion 12 faces the slit 13 of the cushion material from above, so that the welding portion 12 and the tension member 15 are located inside the first cushion material 5.

As shown in FIG. 7 (b), the backrest 22 has a first cushion material 5 bonded to the front surface of the bottom plate 23 and a second cushion material provided on the front side of the first cushion material 5. 6 are adhered, and the cushion members 5 and 6 are covered with the skin 4. Epidermis 4
Is formed by a rear skin 24 corresponding to the side skin 7 of the skin 4 of the single sheet 1 or the tandem sheet 21 and a front skin 25 corresponding to the upper skin 8 of the skin 4 of both sheets.

A front skin 25 is connected to the rear skin 24 by sewing, and wrinkles 10 and 11 are attached to the front skin 25.
7 is provided for forming the weld (see FIG. 7C). The two portions of the welded portion 12 (shown by a circle C in FIG. 7A) are pulled toward the bottom plate 23 by the tension member 15 as shown in FIG. 7C. Also in the backrest 22, the welded portion 12 is provided with the cushion members 5, 6
The welding portion 12 and the tension member 15 are configured to be located inside the first cushion material 5.

By forming the tandem sheet 21 and the backrest 22 in this manner, the welded portion 12 of the relatively hard skin 4 and the tension member 15 can be embedded inside the first cushion material 5, The second cushion material 6 which is highly flexible and the relatively soft portion of the skin 4 form a seat seating portion and a backrest front portion.

In the first and second embodiments described above, an example in which the present invention is applied to a motorcycle seat has been described. However, the present invention can be applied to other vehicles, for example, small three-dimensional (4) ) It can also be applied to seats of wheels, small boats, golf carts and the like.

[0028]

As described above, according to the present invention, the welded portion of the skin, which is welded linearly and becomes relatively hard, and the tension member are embedded in the interior of the first cushion material. A second cushioning material having flexibility,
Since the outer surface portion of the seat occupying portion is formed by the relatively soft portion of the skin, a vehicle seat that does not give a foreign object feeling when the occupant is seated can be realized.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a single seat for a motorcycle.

FIG. 2 is a perspective view showing a structure of a welding portion of a skin.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view showing a tandem seat for a motorcycle.

FIG. 6 is an enlarged sectional view showing a main part.

FIG. 7 is a view showing a backrest.

[Explanation of symbols]

1 ... Single seat, 2 ... Seat bottom plate, 4 ... Skin, 5 ...
1st cushion material, 6 ... 2nd cushion material, 7 ... side skin, 8 ... upper skin, 12 ... welding part, 13, 14 ... slit, 15 ... tension member.

Continuation of the front page (72) Inventor Yasuhito Suzuki 2500 Shinkai, Iwata-shi, Shizuoka Prefecture Yamaha Motor Co., Ltd. F-term (reference) 3B087 DE03

Claims (1)

[Claims] 1. A vehicle seat comprising a tension member for pulling a part of a skin covering a cushion material to a seat bottom plate side, wherein the cushion material is located on a seat bottom plate side and has relatively poor flexibility. Material and a second relatively flexible second material overlying the first cushioning material.
And the tensile member is connected to a welded portion connecting end portions of the skin,
A vehicle seat having a structure in which a skin is pulled by a tension member so that the welded portion is located inside the first cushion material.