JPH0450834Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seat for vehicles such as automobiles and trains.

[Prior Art] Among vehicle seats, the seat cushion of a single-seat seat in particular has cushion springs that are arranged in parallel in the front-rear direction of the seat and have fitting springs on both sides that open to the sides of the seat. This provided the cushioning action of the cushion sheet.

[Problems to be solved by the invention] However, in such a vehicle seat, the seat cushion lacks stiffness in the left and right direction, which increases the feeling of rocking in this direction, resulting in a lack of stability. The leading edge of the cushion spring is far from the foot of the cushion spring, and the rigidity of this portion is insufficient, resulting in an excessively depressed position, resulting in an unsatisfactory ride quality.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a vehicle seat in which the rigidity of the seat cushion of a single seat seat in the left and right direction and its front edge portion is appropriately increased to improve riding comfort. With the goal.

[Means for Solving the Problems] The present invention for achieving the above object has a seat cushion for a single-person seat, in which a plurality of springs arranged in parallel in the longitudinal direction of the cushion A front row spring having a forward-opening fish mouth portion on both sides disposed at the front, a middle row spring having coil portions on both sides arranged behind the front row spring, and a middle row spring arranged at the rear of the middle row spring. The device is characterized by a spring in the rear row having fish mouth portions on both sides that open to the sides.

The fish mouse portions of the front row and rear row springs may be configured as a double fish mouse and a single fish mouse, respectively.

[Function] The front row spring restricts the horizontal movement of the seat cushion and increases the rigidity of the front edge of the seat cushion. In addition, it flexibly responds to the longitudinal, horizontal, and vertical vibrations of the middle row spring seat cushion, contributing to improved ease of getting on and off the seat. Further, the rear row spring restricts the front and back rocking of the seat cushion. Although the rear row spring lacks rigidity for swinging in the left-right direction, swinging in this direction is regulated by the seat back.

Thus, the front row, middle row, and rear row springs collectively contribute to improving the riding comfort of the seats.

[Example] Hereinafter, the present invention will be specifically described based on an illustrated example.

Fig. 1a shows a seat cushion 1 for a single-person seat according to the present invention, and shows a skeleton portion consisting of an upper frame line 2, a cushion frame 3, and a plurality of various springs provided between these. . Upper frame line 2 is the second
As shown in the figure, the seat cushion 1 is formed in a loop shape in the outer shape of the seat cushion 1. The cushion frame 3 is formed into a pan-shape by a substantially rectangular flat plate 3a and a peripheral wall 3b formed at the peripheral edge of the flat plate 3a, and a rectangular hole 3c is formed slightly at the rear of the flat plate 3a. is drilled, and this hole 3
A plurality of capsules 3e, 3e, . . . are provided in a row in the front-back direction of the seat on both sides of the seat. As shown in FIG. 4, this capsule 3e is formed in the shape of a tunnel by making a notch in the plane plate 3a, and the notch portion becomes convex on the surface.

The plurality of springs are provided in parallel in the front-rear direction of the seat cushion 1.

The plurality of springs include a front row spring 40 disposed at the front of the seat cushion 1 as shown in FIG.
Middle row spring 5 arranged behind this front row spring 40
0, and three rear row springs 60, 60, 60 arranged in parallel behind the middle row spring 50. As shown in FIG. 5a, the front row spring 40 is a double spring having a spring wire 41 whose central portion is two-dimensionally bent in the front-rear direction of the seat cushion 1, and both ends of which are extended to open toward the front of the cushion seat 1. Fitting mouth parts 42, 42 are formed on both sides, and a U-shaped hook part 42a formed at the lower end of the mouth part 42 is caulked and fixed to the capsule 3e of the cushion frame 3.
The bent front edge portion 41a of the front edge is fixed to the upper frame line 2 with a clip 4 (see FIG. 1b).

Furthermore, as shown in FIG. 5b, the middle row spring 50 has a spring wire 51 bent in the same manner as the front row spring 40.
Coil parts 52, 52 are formed on both sides by extending both ends of the coil part 52, and a U-shaped hook part 52a formed at the lower end of the coil part 52 is caulked and fixed to the capsule 3e of the cushion frame 3. The side edge bent portion 51a of the wire 51 is fixed and attached to the upper frame line 2 with a clip 4.

Furthermore, as shown in FIG.
single-fit mouth portions 62, 62 extending from both ends of the cushion sheet 1 and opening to the sides of the cushion seat 1;
are formed on both sides, and a U-shaped hook portion 62a formed at the lower end of the mouth portion 62 is caulked and fixed to the capsule 3e of the cushion frame 3. Clip the side edge bent portion 61a to the upper frame line 2 4
(see Figure 1c). In this way, the skeleton of the cushion sheet 1 is formed, and ordinary structural members such as cushion pads and skins (not shown) are added to this skeleton to form the cushion sheet 1. 1. Back sheet (not shown)
is attached to form a vehicle seat.

In the vehicle seat formed in this way, the front row spring 40 has stiffness in the left and right direction even as a spring element itself, and by being fixed to the upper frame line 2 with the clip 4, the above stiffness is further increased and the shoe is fixed. The horizontal movement of the seat 1 is restricted. Further, the front row spring 40 is connected to its mouth portion 42.
is provided so as to open toward the front of the cushion sheet 1, so that the vertical swing of the front edge of the upper frame line 2 becomes stiff and prevents the front edge of the cushion sheet 1 from falling. . The coil parts 52 provided on both sides of the middle row spring 50 attached to the rear of the front row spring 40 can freely respond to loads in the front and rear, left and right, and up and down directions, so that the ease of getting on and off the seat is good. becomes.

Furthermore, the three rear row springs 60 attached to the rear of the middle row spring 50 restrict the swinging of the seat cushion 1 in the front-rear direction. Since this rear row spring has a mouth portion 62 that opens in the side direction of the seat cushion 1, it does not exhibit rigidity against the lateral rocking of the seat cushion 1, but the sway of the occupant's upper body in this direction is caused by the seat back. Therefore, there is no negative effect on the sense of stability and ride comfort for the occupants.

It should be noted that the present invention is not limited to the above-described embodiment, and the mouse portions 4 provided on both sides of the front row spring 40 may be used.
2 may be a single mouth portion, and the number of springs may be changed as appropriate, such as two or more middle row springs 50 or four or more rear row springs 60, depending on the size of the seat.

[Effects of the invention] Since the present invention is constructed as described above, it is possible to restrict the swinging of the cushion seat of the single-person seat in the longitudinal and lateral directions, and to moderate the fall of the front edge of the seat. It was possible to obtain a vehicle seat that improves the sense of stability and riding comfort for the occupants by regulating the conditions.

[Brief explanation of drawings]

FIG. 1 shows the skeleton of a cushion sheet according to the present invention, in which a is a plan view thereof, b is a sectional view taken from the side shown by arrow B, and FIG.
c is a side sectional view taken in the direction of the arrow c, FIG. 2 is a perspective view of the upper frame line of the same sheet, FIG. 3 is a perspective view of the cushion frame of the same sheet, and FIG. 4 is a sectional view of the same frame as seen in the arrow direction; FIG. 5 shows the spring of the present invention, in which a is a perspective view of the front row spring, b is a perspective view of the middle row spring, and c is a perspective view of the rear row spring. 1...Cushion sheet, 2...Upper frame line, 3...
...Cushion frame, 40...Front row spring, 50
... Middle row spring, 52 ... Coil section, 60 ... Back row spring, 42, 62 ... Fish mouth section.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a seat cushion for a single-seat seat, a plurality of springs arranged in parallel in the longitudinal direction of the cushion are arranged in the front part of the cushion. A front row spring having open fish mouth portions on both sides, a middle row spring having coil portions on both sides arranged behind the front row spring, and a middle row spring arranged behind the middle row spring and opening to the side. 1. A vehicle seat comprising a spring in the rear row having a fixed mouth portion on both sides. (2) The vehicle seat according to claim 1, wherein the fish mouth portions of the front row and rear row springs are a double fish mouth and a single fish mouth, respectively.