JP2850188B2 - Vehicle sheet and manufacturing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet for a vehicle such as an automobile in which an elastic body is provided on a sheet frame and covered with a skin, and a method for producing the same.

[0002]

2. Description of the Related Art A conventional vehicle seat is shown in FIG. In this vehicle seat, the left and right bottom ends 2a of the sheet frame 1 are bent, and the bottom 2 is bent in the proximal direction to project hooks 2b. The hooks 2b are provided along the depth direction of the left and right bottom portions 2 of the sheet frame 1. Further, an S spring member 3 is stretched between the hooks 2b, and an elastic body 4 such as urethane foam is laminated. Then, a laminate of the elastic body 4 and the sheet frame 1 is covered with a skin body 5, and the terminal 5 a is fixed to a bottom end 2 a of the sheet frame 1 with a metal clip 6. I have.

[0003]

SUMMARY OF THE INVENTION
According to the figure, the terminal 5a of the skin 5 is fastened to the bottom end 2a of the sheet frame 1 with the clip 6 and the terminal 5a of the skin 5
a to the sheet frame 1 and the S spring member 3 to the hook 2
b, the S spring member 3 and the seat frame
In some cases, the clip 6 at the bottom end 2a of the drum 1 comes into contact, and abnormal noise is generated due to the contact between the metal members, thereby compromising comfort. In addition, the work of fixing the terminal 5a of the skin body 5 to the sheet frame 1 with a large number of clips 6 takes a great deal of time and labor, which may lead to a decrease in productivity and an increase in price. .

The present invention has been made based on the above circumstances, and an object of the present invention is to provide a method in which a spring member stretched over a hook of a sheet frame and a bottom end of the sheet frame come into contact with each other. It is an object of the present invention to provide a vehicle sheet and a method for manufacturing the same, which can prevent abnormal noise from being generated even when doing so and can easily perform a fixing work of a skin terminal without trouble. is there.

[0005]

SUMMARY OF THE INVENTION A vehicle seat according to the present invention comprises a seat frame, an elastic member provided on the seat frame, the elastic member and the seat frame. A skin body that covers the laminated body of the above, and one end in the width direction formed of a heat-shrinkable synthetic resin is provided connected to the lower end of the skin body, and the other end is heated and shrunk so that the other end is formed. A relatively soft tee that engages the bottom of the
And a connection member in the form of a loop.

A method of manufacturing a vehicle sheet according to the present invention is directed to a method of manufacturing a vehicle sheet in which an elastic body is provided on a sheet frame, and the laminated body is covered with a skin. A step of providing an elastic body on the frame, a step of connecting one end in the width direction of a relatively soft tape-shaped connecting member made of a heat-shrinkable synthetic resin to a lower end of the skin, Covering the body with the elastic body and covering the other end of the connecting member with the bottom of the sheet frame; and heating the connecting member to shrink the other end of the sheet frame. And a step of engaging with a bottom portion of

[0007]

According to the above construction, the connecting member, one end of which is connected to the lower end of the skin body, is heated and contracted, so that the other end can be engaged with the bottom of the sheet frame. Therefore, these connecting operations can be performed easily and quickly, and noise is generated even if the S spring member contacts the bottom end of the sheet frame because no metal clip is used. Nothing.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 10 denotes a seat frame of a vehicle seat according to the present invention. The bottom 1 of the sheet frame 10
1 is bent toward the inner surface of the sheet frame 10, and its tip 11a is formed in a flat plate shape. Further, hook pieces 11b are protruded from left and right bottom portions 11 of the sheet frame 10, and are bent toward the base end of the bottom portion 11 of the sheet frame 10.

The ends of the S spring member 12 are engaged with the left and right hooks 11b, and the S spring member 12 is stretched between the hooks 11b. On the upper surfaces of the S spring member 12 and the sheet frame 1, an elastic body 13 such as urethane foam is laminated.

The above-mentioned sheet frame 10 and elastic body 1
3 is covered with a skin 14 to form a vehicle seat.
Is formed. The skin body 14 is a well-known member such as a woven fabric used for this type of sheet and is formed in a substantially bag shape. One end 1 in the width direction of the connecting member 15
5a are connected by sewing or the like. This connecting member 15
Is formed of a relatively soft heat-shrinkable synthetic resin, for example, vinyl chloride resin, EPT, PETP, cross-linked polyethylene, silicone rubber, etc., heat-molds these resins, and reheats the molded article. This has the property of trying to return to the original form.

In a state in which the skin 14 is covered with the elastic body 13, one end 15a in the width direction of the connecting member 15 is joined to a side of the sheet frame 10, as shown in FIG. The middle part is bent along the shape of the sheet frame 10, and the other end 15b is the bottom 1 of the sheet frame 10.
1 is bent so as to cover the lower surface thereof and to enclose the bottom end 11a. In this state, the connection member 15
When the heating member is heated, the connecting member 15 contracts in its length direction, pulls the skin body 14, comes into close contact with the bottom 11 of the sheet frame 10, and the tip of the other end 15b engages with the bottom tip 11a. The skin 14 to which the one end 15a of the connecting member 15 is connected is fixed to the sheet frame 10.

FIGS. 4 (a) to 4 (d) show a manufacturing process of the vehicle seat having the above-mentioned structure. FIG. 4A shows a first step, in which an elastic body 13 made of urethane foam is laminated on the upper surface of the sheet frame 10 on which the S spring member 12 is stretched. . This elastic body 13 is a sheet free.
Or the sheet frame 1
In this case, the sheet is directly foamed with the sheet frame 10 and is integrally connected to the sheet frame 10. FIG. 4B shows a second step performed in parallel with the first step in time. In the second step, the width of the connecting member 15 over the entire inner periphery of the lower end of the skin body 14 is defined. One end 15a in the direction is connected by sewing or the like.

In a third step shown in FIG. 4C, the elastic body 13 laminated on the upper surface of the sheet frame 10 is covered with a skin 14 to which the connecting member 15 is connected. The other end 15b is laid on the lower surface side of the bottom 11 of the sheet frame 10, and its tip is bent so as to wrap around the bottom tip 11a.

In the third step, the sheath coated with the skin 14
The frame 10 is carried into the hot air heating furnace 17 by the conveyor 16 in the fourth step shown in FIG. 4D, and is heated to 50 to 130 ° C. by the hot air in the hot air heating furnace 17. You. Accordingly, the connecting member 15 provided on the inner surface of the lower end portion of the skin body 14 over its entire circumference is thermally contracted, and the other end portion 15b in the width direction is engaged with the bottom portion 11 of the sheet frame 10. As a result, the skin 14 to which the one end 15a of the connecting member 15 is connected is fixed to the seat frame 10, and a vehicle seat is manufactured.

According to the vehicle seat manufactured as described above, the outer cover 14 thermally contracts the connecting member 15 having one end connected to the lower end of the outer cover 14, and the other end 15b.
Is fixed to the sheet frame 10 by engaging with the bottom 11 of the sheet frame 10. Therefore, for example,
The S spring member 12 stretched on the toe frame 10 is a sheath.
Even if it comes into contact with the bottom end 11b of the
The spring member 12 comes into contact with the relatively soft sheet-like connecting member 15, and the S spring member 12 is made of metal but the connecting member 15 is made of synthetic resin. The noise does not occur and the comfort is not impaired.

Further, the skin body 14 is not fixed to the sheet frame 10 by using a large number of clips as in the prior art, but is connected to the sheet frame 10 only by heat-shrinking the connecting member 15. Can be fixed. Therefore, the skin 1
4 can be easily and quickly connected and fixed to the sheet frame 10. In addition, since the operation of thermally contracting the connecting member can be automated, the productivity can be improved also by that.

[0017]

As described above, according to the present invention, a relatively small heat-shrinkable synthetic resin is formed at the lower end of the skin.
One end of the soft tape-shaped connecting member in the width direction is connected, the connecting member is thermally contracted, and the other end is engaged with the bottom of the sheet frame, so that the skin is sealed. -Fixed to the camera.

Therefore, the S stretched over the sheet frame
Even if the spring member comes into contact with the bottom of the sheet frame, the S-spring member comes into contact with the connecting member. Is not compromised.

Further, since the skin can be fixed to the sheet frame without using a large number of clips as in the prior art, the connecting operation can be performed easily and quickly. Since the operation of heat shrinkage can be easily automated, productivity can also be improved thereby.

[Brief description of the drawings]

FIG. 1 is a sectional view of a vehicle seat according to the present invention.

FIG. 2 is a cross-sectional view showing a state before the connecting member is thermally contracted and fixed to a sheet frame.

FIG. 3 is a sectional view of a conventional vehicle seat.

FIG. 4 is an explanatory view of a manufacturing process of the vehicle seat according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Sheet frame 11 Bottom part 12 S spring member 13 Elastic body 14 Skin body 15 Connecting member

Claims (2)

(57) [Claims] 1. A sheet frame, an elastic body provided on the sheet frame, a skin covering a laminate of the elastic body and the sheet frame, and a heat-shrinkable body. combining the other end in the width direction end portion is formed is contracted by being heated with provided connected to the lower end portion of the skin member by resin the sheet - Tofure - relatively soft to engage the bottom of the arm
A vehicle sheet comprising : a high-quality tape-shaped connecting member. 2. A method for manufacturing a vehicle seat comprising: providing an elastic body on a sheet frame, and covering the laminated body with a skin body, wherein the elastic body is provided on the sheet frame. Process, the lower end of the skin body is made of a heat-shrinkable synthetic resin
A step of connecting one end in the width direction of a relatively soft tape-shaped connecting member; a step of covering the skin with the elastic body and covering the connecting member with a bottom of the sheet frame; Heating the connecting member to shrink it so that the other end is engaged with the bottom of the sheet frame.