JP2004121384A - Seat of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat with a versatile seat frame to which a face spring body can be easily attached. <P>SOLUTION: The seat consists of the seat frame to which a seat cushion and a seat back are attached. The seat frame comprises a pair of side frames, front and rear connection members for connecting the side frames in the front and rear, respectively, and a U-shaped back frame connected to end parts of the side frames. The side frames are attached to the floor of the vehicle, connected to a pair of seat adjustors respectively to adjust the position of the seat, and the face spring body for the cushion is disposed between the front and rear connection members. The front end and the rear end of the face spring body have curved parts to be engaged with the connection members, respectively. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat in which a seat cushion and a seat back are attached to a seat frame, and more particularly to a seat having a seat frame in which a face spring body can be easily attached.
[0002]
[Background Art and Problems to be Solved by the Invention]
FIG. 1 is an exploded view of a conventional seat frame (see, for example, Patent Document 1). The seat frame includes a back frame 1, a cushion frame 6, and a pair of mounting adjusters 10.
[0003]
[Patent Document 1]
Japanese Patent No. 3087722 [0004]
The back frame 1 is a substantially U-shaped frame, and both ends thereof are connecting portions 2 and 2, and a reinforcing member 3 is passed. The connection part 2 is provided with a bolt hole 2 ′ for connection with another frame, and a nut is fixed inside the frame 1 corresponding to the hole 2 ′. The cushion frame 6 is a frame for supporting the seat portion, that is, the seat cushion, and has a shape corresponding to the outer shape of the seat portion. This cushion frame is also provided with a bolt hole 7 to which a nut is fixed.
[0005]
The seat adjuster 10 is configured to attach a seat to a floor surface of a vehicle or the like and to be able to slide back and forth. The lower members 11 and 12 and an upper member in which a lower portion is slidably housed in the lower member. 13 and 14. The lower members 11 and 12 are provided with attachment pieces 11 ′ and 12 ′ for attaching a seat to the floor surface. The upper members 13 and 14 are provided with attachment pieces 15 and 16 for connection to the cushion frame. The mounting pieces 15 and 16 are provided with holes 15 'and 16', but these holes are aligned with the holes 7 of the cushion frame, and both frames are connected by bolts. Further, the rear ends of the upper members 13 and 14 are provided with rotating members 19 and 20 constituting a reclining adjuster. Here, the connecting portion 2 of the back frame 1 is aligned, and the holes 2 ′ and the holes of the rotating members 19 and 20 are aligned. The back frame 1 can be attached through the bolts.
[0006]
The seat back is assembled to the back frame 1, and the seat cushion is assembled to the cushion frame 6. In particular, the seat cushion may be assembled to the seat frame 6 via a plurality of spring bodies.
[0007]
In the conventional prior art (see, for example, Patent Document 2), the spring body is attached by arranging a plurality of spring bodies on the seat cushion and assembling the seat cushion thereon.
[0008]
[Patent Document 2]
Japanese Utility Model Publication 4-15075
The seat frame 6 can obtain the overall rigidity simply by being attached to the seat adjuster 10. However, in order to attach the spring body to the seat frame, the means for attaching the seat body to the number of the spring bodies is set. Must be provided accordingly.
[0010]
Even if a surface spring body is used instead of a plurality of spring bodies, means for attaching the surface spring body must be provided on the seat frame, and the size of the surface spring body is constant. , Such attachment means are also fixed.
[0011]
Therefore, when various surface spring bodies are used according to the purpose of the seat, it is necessary to change the seat frame corresponding to the surface spring body.
[0012]
Although various attachment means can be provided so that the seat frame corresponds to various surface spring bodies, the cost must be high.
[0013]
Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide the above-described seat having a seat frame to which a surface spring body that elastically supports a seat cushion can be easily attached. .
[0014]
Another object of the present invention is to provide a seat having a seat frame that can be easily mounted regardless of the type of the face spring body.
[0015]
Furthermore, the other object of this invention is to provide the said seat which can attach a seat cushion and a surface spring body together.
[0016]
[Means for Solving the Problems]
The seat of the present invention that achieves the above object is a seat in which a seat cushion and a seat back are attached to a seat frame. The seat frame includes a pair of side frames, a front connecting member and a rear connecting member that connect the side frames in front and rear, respectively, and a U-shaped back frame connected to an end of the side frame. . The side frames are attached to the floor of the vehicle and are respectively connected to a pair of seat adjusters that can adjust the position of the seat.
[0017]
A cushion surface spring body is disposed between the front connection member and the rear connection member, and the front end and the rear end of the surface spring body have curved portions for engaging with the connection member.
[0018]
It is desirable that the curved portions at the front end and the rear end of the surface spring body have a shape according to the shape of the connecting member. The surface spring body may be assembled to the bottom of the seat cushion.
[0019]
The adjuster and the side frame may be coupled via a link to adjust the height of the seat. Moreover, it can further have a connection tool which connects the angle between a side frame and a U-shaped back frame so that adjustment is possible.
[0020]
The surface spring body that elastically supports the seat cushion is attached by simply engaging the curved portions provided at the front end and the rear end with the two connecting members.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
A seat frame constituting the seat of the present invention that achieves the above object will be described with reference to FIG. The seat frame 20 is capable of adjusting the height of the seat, and includes a pair of side frames 21a and 21b and a back frame 30 connected to an end of the side frame.
[0022]
The front pipe 22 that connects both the front and rear sides of the side frames 21a and 21b is connected by welding, and the rear pipe 23 is connected by screws. The front and rear pipes constitute a frame for holding the seat cushion. However, frames for various seats can be constructed by appropriately selecting the length of the front and rear vip.
[0023]
Side plates 25a and 25b are fixed to the rear ends of the side frames 21a and 21b via rotating members 24a and 24b, respectively. Further, a lower frame 26 and a lower pipe 27 are connected to the side plates 25a and 25b. U-shaped seat frames 28 are connected and fixed to the ends of the side frames 25a and 25b, respectively. A pipe portion for attaching a headrest (not shown) is fixed to the seat frame 28. A back frame 30 is constituted by these side plates and the seat frame.
[0024]
A pair of seat adjusters 40a and 40b for attaching the seat to a floor surface of a vehicle or the like are attached to the pair of side frames 21a and 21b. These seat adjusters 40a and 40b are seated as in the prior art. It can be attached to the floor and slid back and forth, and is composed of lower members 41a and 41b and upper members 42a and 42b in which the lower members are slidably housed. At the front and rear ends of the lower members 41a and 41b, mounting pieces 41a ′ and 41a ″ and 41b ′ and 41b ″ for mounting the seat to the floor surface are provided.
[0025]
Links 43a and 43b connect the side frames 21a and 21b to the front of the upper members 42a and 42b. Further, the links 44a and 44b connect the rear of the side frame 21b and the rear pipe 23 (the side frame 21a is also connected by a link in the same manner). With these links, the seat height can be adjusted. In the case of a seat that does not require adjustment of the seat height, the side frame and the upper member may be directly connected.
[0026]
The pair of side frames 21a, 21b, the front pipe 22, and the rear pipe 23 constitute a frame that supports the seat cushion. In order to elastically support the seat cushion, a spring is used. In the present invention, a surface spring body is used. FIG. 3 shows the arrangement of the surface spring bodies.
[0027]
The surface spring body 50 used in the present invention basically has the same configuration as the conventional surface spring body, but the overall length of the surface spring body is approximately the distance between the front pipe 22 and the rear pipe 23. Thus, the front end and the rear end of the surface spring body are curved so as to engage with the front and rear pipes 22, 23 (50a, 50b). Accordingly, as shown in FIG. 3, the surface spring body 50 is mounted on the front and rear spring pipes 22 and 23 by being lowered and snap-fitted as shown in FIG. be able to.
[0028]
In the conventional spring and face spring body, in order to attach to the cushion frame 6 (FIG. 1), an engaging means is required for engaging the spring with the cushion frame, and an attaching operation to the engaging means is required. However, in the seat frame and the face spring body of the present invention, the attachment is completed simply by pressing the face spring body against the pipe.
[0029]
As shown in FIG. 3, after the surface spring body 50 is attached to both the pipes 22 and 23, a seat cushion is attached thereto, but as shown in FIGS. Is embedded in the seat cushion 52 in advance (in FIG. 4, a part of the embedded surface spring body is indicated by a broken line, and in FIG. 5, the curved portion is exposed from the bottom surface of the seat cushion. ) By pressing the seat cushion from above, the surface spring body can be attached to both the pipes 22 and 23, and the attachment of the seat cushion is completed.
[0030]
【The invention's effect】
In accordance with the present invention, the end of the surface spring body used to elastically support the seat is provided with a curved portion that can engage with the connection member. Simply press down to complete the mounting of the face spring body.
[0031]
Further, by embedding the surface spring body in the seat cushion in advance, the attachment of the seat cushion can be completed only by attaching the surface spring body to the connecting member.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a conventional seat frame.
FIG. 2 shows a perspective view of the seat of the present invention.
FIG. 3 shows a state in which a face spring is attached to the frame of the seat of the present invention.
FIG. 4 shows a state in which a seat cushion embedded with a face spring is attached to the seat frame of the present invention.
FIG. 5 is a lower perspective view of a seat cushion in which a face spring body is embedded.
[Explanation of symbols]
20 ... Seat frames 21a, 21b ... Side frames 22 ... Front pipes 23 ... Rear pipes 24a, 24b ... Rotating members 25a, 25b ... Side plates 26 ... Lower frames 27 ..Lower pipe 28 ... U-shaped frame 30 ... Back frames 40a, 40b ... Seat adjusters 41a, 41b ... Lower members 42a, 42b ... Upper members 41a ', 41b', 41a ", 41b "... mounting pieces 43a, 43b, 44a, 44b ... links 50 ... surface spring bodies 50a, 50b ... curved ends

Claims (5)

A pair of side frames, a front connecting member and a rear connecting member for connecting the side frame in front and rear, respectively, a U-shaped back frame connected to an end of the side frame,
In a seat in which a seat cushion and a seat back are attached to a seat frame including
The side frames are respectively attached to a pair of seat adjusters that are attached to the floor of the vehicle and can adjust the position of the seats
A cushion spring spring is disposed between the front connecting member and the rear connecting member,
The front end and the rear end of the surface spring body have curved portions for engaging with the connecting member;
A seat characterized by that. The seat according to claim 1, wherein the surface spring body is assembled to a bottom portion of the seat cushion. The seat according to claim 1, wherein the adjuster and the side frame are coupled via a link to adjust the height of the seat. 2. The seat according to claim 1, further comprising a connecting member that adjustably connects an angle between the side frame and the U-shaped back frame. 2. The seat according to claim 1, wherein the curved portions at the front end and the rear end of the surface spring body have shapes corresponding to the shapes of the two connecting members.

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