JPH09301026A - Vertical motion device for cushion seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently utilize spaces by miniaturizing the operating space to improve the operating efficiency, miniaturizing the accommodating space, and miniaturizing a vertical motion device. SOLUTION: With a vertical motion device, a cushion frame 3 is provided so that it is vertically movable with respect to a fixed frame 12 on the car body frame side, and the cushion frame 3 and the fixed frame 12 are connected by a front side turning arm 40. A fixed side mounting shaft 41, a shaft 44, and an arm mounting shaft 45 are arranged so that a line segment F connecting the shaft 44 to the arm mounting shaft 45, is moved clockwise when the front side of the cushion seat 2 is moved upward when viewed from the end side in relation to the car body advancing direction, and it is moved counterclockwise when the front side of the cushion seat 2 is moved downward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical movement device for a cushion sheet.

[0002]

2. Description of the Related Art In the publicly known Japanese Utility Model Publication No. 4-6338, a fixed frame mounted on the body frame side, a cushion frame vertically provided with respect to the fixed frame, and a shaft provided on the cushion frame side are provided. A front operating rotary member that is rotated by an arbitrary operating means, and a front rotary member in which one end of the front operating rotary member is axially attached by a mounting shaft and the other end is axially attached to the fixed frame by a fixed mounting shaft. In the cushion seat having a moving arm, the shaft of the front-side actuating rotary member moves the front side of the seat upward when the mounting shaft moves upward with respect to the fixed-side mounting shaft, and the front-side actuating member is rotated. The shaft of the moving member is a cushion seat in which the shaft, the fixed side mounting shaft, and the mounting shaft are arranged so that the front side of the seat moves downward when the mounting shaft moves downward with respect to the fixed side mounting shaft. Vertical movement It has been described for the location.

[0003]

In the above-mentioned known example, since the vertical direction of the mounting shaft due to the rotation of the front operating rotary member and the vertical direction of the front portion of the seat coincide, the operating space is correspondingly increased. Is required, and there is a problem in that the size of the entire vertical movement device is increased.

[0004]

The object of the present invention is to reduce the operating space, improve the operating efficiency, reduce the housing space, and reduce the vertical movement device.
Effective use of space.

[0005]

According to the present invention, there are provided fixed frames 12 and 12 mounted on a vehicle body frame side, a cushion frame 3 vertically provided with respect to the fixed frames 12 and 12, and the fixed frame 12, Front rotating arm 4 for connecting the front side of 12 and the front side of the cushion frame 3 side
0 and an up-and-down moving device including an operating mechanism for rotating the front rotating arm 40, the front rotating arm 40 has its rear end attached to the fixed frame 12 by a fixed side mounting shaft 41. And a front end thereof is attached to the cushion frame 3 side by a shaft 44. The front rotation arm 40 is rotated by the arm attachment shaft 45, and the fixed side attachment shaft 41 is attached. Is always positioned above and rearward of the shaft 44,
In the fixed side mounting shaft 41, the shaft 44, and the arm mounting shaft 45, a line segment F connecting the shaft 44 and the arm mounting shaft 45 moves the front side of the cushion seat 2 upward in a side view with respect to the vehicle traveling direction. This is a cushion seat up-and-down device that is arranged so as to move in the clockwise direction when moving the front side of the cushion seat 2 downward and to move in the counterclockwise direction when moving the front side of the cushion seat 2 downward. The present invention relates to the fixed frames 12 and 12 mounted on the vehicle body frame side, the cushion frame 3 vertically provided to the fixed frames 12 and 12, and an arbitrary operation provided by a shaft 44 on the cushion frame 3 side. Front operating member 43 which is rotated by means, and one end of which is attached to the front operating member 43 by a mounting shaft 45 and the other end of which is attached to the fixed frame 12 by a fixed mounting shaft 41. In the cushion seat having the rotating arm 40, the shaft 44 is rotated by the front operating rotary member 43 even if the mounting shaft 45 does not necessarily move upward with respect to the fixed mounting shaft 41. When moving upward with respect to the fixed side mounting shaft 41, the front side of the seat 2 is moved upward, and the shaft 4
4 is the rotation member 43 for operating the front side even if the mounting shaft 45 does not necessarily move downward with respect to the fixed side mounting shaft 41.
When the lower side of the fixed side mounting shaft 41 is moved by the rotation of the shaft 4, the shaft 4 is moved downward so as to move the front side of the seat 2 downward.
4 and the fixed side mounting shaft 41 and the mounting shaft 45 are arranged to constitute a cushion seat vertical movement device. The present invention relates to the fixed frames 12 and 12 mounted on the vehicle body frame side, the cushion frame 3 vertically provided to the fixed frames 12 and 12, and an arbitrary operation provided by a shaft 44 on the cushion frame 3 side. Front operating member 43 which is rotated by means, and one end of which is attached to the front operating member 43 by a mounting shaft 45 and the other end of which is attached to the fixed frame 12 by a fixed mounting shaft 41. In the cushion seat having the rotating arm 40, the shaft 44 does not necessarily move upward with respect to the fixed side mounting shaft 41, but the front side rotating member 4 does not move.
When the fixed side mounting shaft 41 is moved upward by the rotation of 3, the front side of the seat 2 is moved upward, and the shaft 44 moves the mounting shaft 45 downward relative to the fixed side mounting shaft 41. Even if it does not move, the fixed side mounting shaft 4 is moved downward so as to move the front side of the seat 2 downward when the front side operating rotating member 43 is rotated to move the fixed side mounting shaft 41 downward.
1 is always located above the mounting shaft 45 on the rear side, and the fixed-side mounting shaft 41, the shaft 44, and the mounting shaft 45 are the shafts 44.
A line segment F connecting between the mounting shaft 45 and the mounting shaft 45 moves in a clockwise direction when the front side of the cushion seat 2 is moved upward when viewed from the side with respect to the traveling direction of the vehicle body, and counterclockwise when the front side of the cushion seat 2 is moved downward. The vertical movement device is a cushion seat arranged so as to move in the direction.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Is a vehicle seat, 2 is a cushion seat of the vehicle seat 1, and 3 is a cushion frame of the cushion seat 2. The cushion frame 3 has a rear bottom plate 4 below the buttocks of a seated person, a lower bottom plate 6 and a higher front bottom plate 6. On the left and right sides of the rear bottom plate 4 and the front bottom plate 6, a rising part 5 standing upright is provided. It is constructed by connecting them in an integrated manner (note that standing walls are provided at the front and rear, but this is not a requirement). The left and right rising portions 5 are formed so as to be gradually inclined toward the outside. Side frames 7 are provided on the side portions of the left and right rising portions 5 over substantially the entire length of the rising portions 5. When viewed from the front, the side frame 7 is formed in a substantially L-shaped structure including a horizontal plate portion 11 in which a lower end portion of the vertical plate portion 10 is bent inward. Reference numeral 12 denotes a pair of left and right fixed frames, which may be fixed to the vehicle body frame or mounted so as to be movable and adjustable in any direction. In the present embodiment, so-called upper rails of slide rails 13 are provided. The fixed frame 12 moves forward and backward with respect to the vehicle body, but is fixed to the side frame 7 that moves up and down, and is therefore referred to as “fixed”. Reference numeral 15 is a lower rail of the slide rail 13. Thus, a vertical movement device for the cushion seat 2 is provided between the fixed frame 12 and the cushion frame 3 side. On the outer side of the rear side of the left and right side frames 7, a front end portion of a rear side rotation arm 16 formed in an inverted triangle shape with its apex forming a part of the vertical movement device facing downward is rotatably mounted on the movement side. Rear pivoting arms 1 are pivotally attached by shafts 17, respectively.
The rear ends of 6 are rotatably attached to the fixed frame 12 by the fixed side attachment shafts 18, respectively.

A rear window portion 20 is formed in the lateral plate portion 11 of the side frame 7 corresponding to the lower end 19 of the rear rotating arm 16 attached to the outside of the left and right side frames 7, and the rear window portion 20 is formed. The rear end of the rod 21 in the front-back direction faces the inside of the
The rear end of the rod 21 is pivotally attached to the lower end of the rear rotating arm 16 by a shaft 22. When the rear window portion 20 is also integrally formed with the lateral plate portion 11 of the side frame 7, the lateral plate portion 11 does not interfere with the rotation of the rear pivot arm 16.
If the rear portion of the rod 21 is bent downward, the position of the shaft 22 is set lower than the position of the shaft-moving-side mounting shaft 17, and the rear-side rotation of the rod 21 is reduced with a small amount of movement. The moving arm 16 can be configured to rotate largely. Of the left and right rods 21, the front end of one of the rods 21 is pivotally attached by a shaft 26 to a rear operating rotary member 25 formed by a rear sector gear 25a. Connection shaft 27 for operation inside
Attach by The side frame 7 is formed with a rear inner bulging portion 28 which bulges inward, and the rear inner bulging portion 2 is formed.
A window 29 is formed on the lower surface side of 8, and a gear 32 fixed to an output shaft 31 of a rear position fixing device 30 is located on the rear inner bulging portion 28. The moving member 25 is engaged. That is, the gear 32 on the outer surface side of the side frame 7 is located on the same plane as the rear actuating rotary member 25 on the inner side of the side frame 7 by the rear inner bulging portion 28, and both are meshed with each other. Since the gear 32 is provided inside the rear inner bulging portion 28, the side frame 7
This is the outer side of the gear 3, and the rear position fixing device 30 with the gear 32 attached can be attached to the outer surface of the side frame 7 to facilitate the assembly.
2 may be provided inside the side frame 7.

Further, an intermediate window 33 is formed in the horizontal plate portion 11 below the rear operation rotating member 25, and the horizontal plate portion 11 of the side frame 7 is rotated by the rear operation rotating member 25. I try not to interfere. The rear side position fixing device 30 is fixed to the outer surface of the vertical plate portion 10 of the side frame 7. The rear side position fixing device 30 has a known structure. A rear side operation dial 34 is attached to the input shaft of the rear side position fixing device 30, and the rear side operation dial 34 is rotatable in any direction and is rotated. And the gear 32 is rotated, but when the rear operation rotation member 25 tries to rotate the gear 32,
It has a built-in mechanism (brake mechanism) to stop it. Therefore, when the rear operation dial 34 is released from the hand, the rear actuation rotation member 25 does not rotate, which causes the rod 21 to lock the rotation of the rear rotation arm 16 and the cushion seat 2 Hold the rear part in place. That is, the rear actuating turning member 25 pushes and pulls the rod 21 to turn the rear turning arm 16, and the rear turning arm 16 moves the moving side mounting shaft 17 to the fixed side mounting shaft 18.
The rear part of the side frame 7 is moved up and down by rotating it to the center. In this case, the rear actuation rotating member 25 is attached to one rod 21, but the tip of an arm 35 is pivotally attached to the other rod 21, and the base of the arm 35 is attached to the actuation connecting shaft 27. Fix it.

Further, since the rear operating rotary member 25 is also used for other vehicle seats, it has more teeth than the vertical moving device of the present application. , The teeth from the end to the intermediate teeth of the rear operating rotary member 25 are used, and the rear operating rotary member 2 having a larger number than this is used.
5 Excessive rotation is regulated by the regulation member 36. That is,
By providing a restricting member 36 for restricting excessive rotation of the rear operating rotary member 25 in the vicinity of the rear operating rotary member 25 for rotating the rear rotary arm 16, the rear side is provided. The actuating rotary member 25 can use teeth from the end teeth to arbitrary positions, and can be shared with other sector gears. The regulation member 36 is formed by bulging a part of the side frame 7 inward. Then, the rear end of the front rotating arm 40 is pivotally attached to the front end of the fixed frame 12 by the fixed side mounting shaft 41. The front rotation arm 40 has its front end tilted downward so as to face the outer side portion of the front window portion 42 formed in the front portion of the side frame 7. On the inner side surface of the front window portion 42 and inside the side frame 7, a front operating rotary member 43 formed by a front sector gear 43a is exposed, and the front operating rotary member 43 is attached to the operating connecting shaft 44. Both ends of the connecting shaft 44 for operation are fixed and the side frame 7 is rotatably mounted. The other end of the front rotation arm 40 is attached to the front operation rotation member 43 by an arm attachment shaft 45. Therefore, the front rotation arm 40
Has one end attached to the fixed frame 12, but the other end is not directly attached to the side frame 7, but is attached to the front operating rotary member 43. The front operating rotary member 43 and the front rotary arm 40 connect the front link mechanism. Configure L.

Therefore, at least the arm mounting shaft 45 is always positioned below and in front of the fixed side mounting shaft 41,
The front rotating arm 40 is configured so that a compressive load is not applied. Further, the front-side actuating rotation member 43 is the actuating connecting shaft 4
The arm mounting shaft 45 moves circularly about the actuating connecting shaft 44 when viewed from the actuating connecting shaft 44, and when viewed from the fixed side mounting shaft 41, the arm mounting shaft 45 moves toward the fixed side. It moves circularly around the mounting shaft 41, but at this time,
An operation connecting shaft 44, which is a shaft attachment portion between the front side rotation member 43 and the cushion frame 3 side, is an arm that is a shaft attachment portion between the front side rotation arm 40 and the front side operation rotation member 43. Even if the mounting shaft 45 does not necessarily move upward, the rotation of the front operating rotation member 43 causes the rotation of the front rotation arm 40.
When moving upward with respect to the fixed side mounting shaft 41 which is a shaft attachment portion with the fixed frame 12, the front side of the seat 2 is moved upward, and the front side rotation arm 40 and the front side operation rotation member 43 are moved. Even if the arm mounting shaft 45, which is the shaft mounting portion, does not necessarily move downward, the front side rotation arm 40 is rotated by the rotation of the front operating rotation member 43, and the fixed side that is the shaft mounting portion with the fixed frame 12. When the seat shaft 41 is moved downward, the front side of the seat 2 is moved downward. Therefore, the fixed side mounting shaft 41, the operation connecting shaft 44, and the arm mounting shaft 45.
When the line segment F connecting the operating connecting shaft 44 and the arm mounting shaft 45 is rotated clockwise in the drawing (side view with respect to the vehicle body traveling direction), the operating connecting shaft 44 is fixed to the fixed side mounting shaft 4.
When the line segment F rotates counterclockwise in the figure, the operating connecting shaft 44 moves downward with respect to the fixed side mounting shaft 41. That is, since the front operating rotary member 43 is provided on the cushion frame 3 side and the front rotary arm 40 is pivotally attached to the front operational rotary member 43, only the fixed side mounting shaft 41 does not move. The operating connecting shaft 44 and the arm mounting shaft 45 move intricately, but by arranging as described above, the operating connecting shaft 4
4, the vertical width of the cushion frame 3 can be increased without increasing the vertical width of the arm mounting shaft 45 and the arm mounting shaft 45.
The front link mechanism L can be downsized. It should be noted that although the front operation rotating member 43 is attached to one end of the operation connecting shaft 44, the base of the arm 37 is fixed to the other end of the operation connecting shaft 44.
The front end of the front rotating arm 40 is pivotally attached to the front end of the.

A front inner bulging portion 46 bulging inward is formed on the side frame 7 above the front operating rotary member 43, and a window portion 47 is formed on the lower surface side of the front inner bulging portion 46. Then, the gear 50 fixed to the output shaft 49 of the front link position fixing device 48 is positioned on the front inside bulging portion 46, and the front operating rotary member 43 is meshed with the gear 50. The relationship between the front operating rotary member 43, the front link position fixing device 48, and the side frame 7 is the same as that of the rear operating rotary member 25 and the rear position fixing device 30. The front sector gear 43a is also used as the rear sector gear 25a, the lateral plate portion 11 of the side frame 7 serves as a rotation restricting member 51, and the operation connecting shaft 27 is used.
And the position of the through hole formed in the rear sector gear 25a through which the shaft 26 is inserted and the position of the through hole formed in the front sector gear 43a through which the operation connecting shaft 44 and the arm mounting shaft 45 are inserted. , And are formed symmetrically and / or symmetrically. Thus, the vertical movement device includes the side frame 7, the fixed frame 12, and the rear turning arm 1.
6 and the front rotation arm 40 constitute a link, and when the rear rotation arm 16 is rotated, the seat rear portion is moved up and down, and when the front rotation arm 40 is rotated, the seat front portion is moved up and down. Rear rotation arm 16 and front rotation arm 4
When both 0 are rotated, the entire seat is moved up and down. In this case, when the front operation dial 52 of the front link position fixing device 48 is rotated to the front side, the front portion of the seat is moved upward,
The rear operation dial 34 of the rear position fixing device 30 is configured to move the rear portion of the seat upward when rotated to the rear side.

Further, the load applied to the seat is mainly at the rear part of the seat, and the fixed side mounting shaft 18 serving as a fulcrum of rotation of the side frame 7 is arranged near the lower part of the seat where the load is applied, and the front operation dial 52 is operated. No reduction device such as a spring is provided to reduce the load and the operation load. Thus, among the constituent elements of the vertical movement device, the rear operation rotating member 25 and the front operation rotating member 4 which are operation mechanisms for operating the rear rotating arm 16 and the front rotating arm 40.
3 and the transmission mechanism for transmitting the operating force from the rear side operation rotating member 25 and the front side operation rotating member 43 to the rear side rotation arm 16 and the front side rotation arm 40, respectively. It is arranged so as to be positioned in a gap formed by the vertical plate portion 10 and the horizontal plate portion 11 of the frame 7 and the rising portion 5 of the cushion frame. That is, the rear rotation arm 16
Also, a rear actuating rotary member 25 and a front actuating rotary member 43, which are operating mechanisms for operating the front rotary arm 40.
And at least a part of the transmission mechanism for transmitting the operating force from each of the rear side operation rotating member 25 and the front side operation rotating member 43 to the rear side rotation arm 16 and the front side rotation arm 40, respectively. It is located in an enclosed space that is formed by the plate portion 10 and the horizontal plate portion 11 and the rising portion 5 of the cushion frame 3 and surrounds the upper, lower, left and right sides, and the remaining portions are the rising portion 5 of the cushion frame 3 and the vertical plate portion. 10 or the vertical plate portion 10, although not surrounded by the shape of the horizontal plate portion 11.
Alternatively, the horizontal plate portions 11 are arranged in an assumed space that will be formed by extending these in the front-rear direction, and as a result, as viewed from the front, the rear operation rotation member 25 and the front operation rotation member are provided. 43, and the transmission mechanism for transmitting the operating force from each of the rear operating rotary member 25 and the front operating rotary member 43 to the rear rotary arm 16 and the front rotary arm 40, respectively. It is configured to be located within the contour shape formed by the vertical plate portion 10 and the horizontal plate portion 11.

In the embodiment, the front bottom plate 6 of the cushion frame 3 is located above the lower portion of the front operating rotary member 43 and does not completely surround the inner portion of the front operating rotary member 43. The front actuation rotating member 43 is not exposed on the outer surface side of the side frame 7 where the skin member and the like are present (FIG. 13). Assuming that the front rotation arm 40 is rotated about the arm mounting shaft 45, the side frame 7 within the rotation range is provided with the engaging portion 53 protruding outward, and the cushion frame is formed. When 3 is assembled to the fixed frame 2, one end of the front rotation arm 40, which is a free end, abuts on the engaging portion 53 to restrict rotation, thereby preventing incorrect assembly and assembling. It makes the work easier.

[0014]

Next, the operation will be described. An operation connecting shaft 27 in which a rear rotation arm 16 is pivotally attached to the outer surface of the rear part of the left and right side frames 7 by a shaft movement side attachment shaft 17, and a rear operation rotation member 25 and an arm arm 35 are fixed. Both ends of the rear operating arm 25 are pivotally attached, and the rear operating rotary member 25 and the arm arm 35 are connected to the rear rotary arm 16 by rods 21, respectively. The output shaft of the fixing device 30 fixes the rear position fixing device 30 to the side frame 7 so that the gear 32 attached to the output shaft 31 meshes with it. Next, both ends of the operation connecting shaft 44 having the front operating rotary member 43 and the arm 37 fixed thereto are axially attached to the inner surfaces of the front portions of the left and right side frames 7, and the front operating rotary member 43 is attached to the front link position. The output shaft of the fixing device 48 fixes the front link position fixing device 48 to the side frame 7 so that the gear 50 attached to the output shaft 49 meshes with the front rotating arm 4 on the outer surface of the front portion of the left and right side frames 7.
0 is abutted, and the tip of the front side rotation arm 40 is attached to the front side window portion 4
It is brought into contact with the outer surface of the front-side actuating rotary member 43 via 2 and is pivotally mounted by the arm mounting shaft 45.

Next, the left and right side frames 7 in this state
The cushion frame 3 is fixed to the left and right, and the left and right rear rotation arms 16 are axially attached to the left and right fixed frames 12 by the shaft fixing side mounting shafts 18, respectively, and the left and right front rotation arms 40 are fixed. Are attached to the fixed frame 12 by the fixed side attachment shafts 41, respectively, and the attachment to the fixed frame 12 is completed. In this case, when it is assumed that the front rotation arm 40 is rotated about the arm attachment shaft 45, the side frame 7 within this rotation range has the engagement portion 53 protruding outward, and thus the cushion is formed. When the frame 3 is assembled to the fixed frame 2, one end of the front rotation arm 40, which is a free end, abuts on the engaging portion 53 to restrict rotation, thereby preventing incorrect assembly. Easy to assemble. Then, the vertical plate portion 10 of the side frame 7 is welded and fixed to the side portion of the rising portion 5 over substantially the entire length, and the horizontal plate portion 11 of the side frame 7 is attached to the lower surfaces of the rear bottom plate 4 and the front bottom plate 6. Since the structure is fixed by welding, the cushion frame 3 and the left and right side frames 7 have a so-called box structure in which each other is a strength member of each other, and sufficient strength is secured even if a thin metal plate is used. Therefore, even if the side frames 7 are attached to the left and right sides of the cushion frame 3, the overall weight is lightened and the weight can be reduced.

Among the components of the vertical movement device,
Rear-side actuating rotary member 25 and front-side actuating rotary member 43
The rod 21 that transmits the operating force from the rear-side operation rotating member 25 to the rear-side rotating arm 16 includes the vertical plate portion 10 and the horizontal plate portion 11 of the side frame 7 and the rising portion 5 of the cushion frame in a front view. Since it is arranged in the space formed by the above, only the front rotating arm 40 and the rear rotating arm 16 are exposed even in the cushion frame 3 to which the seat vertical movement device is attached. The work of attaching the pad to the cushion frame 3 and the work of surrounding the pad with the skin member are not only easy, but also the pad and the skin member are not damaged during the work. In addition, FIG.
In the embodiment, the rear operating rotary member 25 and the rod 21 for transmitting the operating force from the rear operational rotary member 25 to the rear rotary arm 16 are connected to the vertical plate portion 10 and the horizontal plate portion 11. The front operating rotary member 43 is positioned in an enclosed space that is formed by the rising portion 5 of the cushion frame 3 and surrounds the upper, lower, left, and right sides. The upper part 5, the vertical plate part 10 or the horizontal plate part 11 is arranged in an assumed space that will be formed by extending these in the front-rear direction, and as a result, a front view,
Rear-side actuating rotary member 25 and front-side actuating rotary member 43
And the transmission mechanism for transmitting the operating force from each of the rear side operating rotary member 25 and the front side operating rotary member 43 to the rear rotary arm 16 and the front rotary arm 40, respectively. Since it is located within the contour shape formed by the plate portion 10 and the horizontal plate portion 11, not only the work of attaching the pad to the cushion frame 3 and the work of surrounding the pad with the skin member are not only easy but also the pad And to prevent contact with the skin member. Further, the rear-side rotation member 25 and the front-side rotation member 43, and the rear-side rotation member 16 and the front-side rotation member 43 are respectively connected to the rear-side rotation arm 16 and the front-side rotation arm. The transmission mechanism that transmits the operating force to each of the 40 is arranged in the assumed space, and thus ensures the operation.

When the vehicle seat 1 is seated and the rear operation dial 34 is rotated clockwise in the figure,
The output shaft 31 of the rear operation dial 34 rotates to rotate the gear 32.
And the gear 32 rotates the rear operating rotary member 25 around the operating connecting shaft 27, and the rear operational rotary member 25 rotates.
Pulls the rod 21 forward. The rod 21 rotates the rear side rotation arm 16 clockwise around the fixed side mounting shaft 18 in the drawing, the moving side mounting shaft 17 moves upward with respect to the fixed side mounting shaft 18, and the rear part of the cushion seat 2 moves upward. . On the contrary, when the rear operation dial 34 is turned, the rear portion of the cushion seat 2 is moved downward. When the front operation dial 52 is turned counterclockwise (front side) in the figure, the output shaft 49 of the front link position fixing device 48 rotates to rotate the gear 50, and the gear 50 rotates the front operating rotation member 43. Is rotated about the operation connecting shaft 44, and the front operation rotating member 43 rotates the arm mounting shaft 45 about the operation connecting shaft 44 in the clockwise direction in the drawing. When the front-side actuating rotary member 43 is rotated about the actuating connecting shaft 44, the arm mounting shaft 45 looks at the actuating connecting shaft 44 as a reference.
It moves in a circle around 4, but at the same time the arm mounting shaft 45
Moves circularly around the fixed-side mounting shaft 41, so that the actuating connecting shaft 44 and the arm mounting shaft 45 are fixed-side mounting shaft 4
When viewed with reference to 1, the arm mounting shaft 45 has the fixed side mounting shaft 41
On the other hand, since the actuating connecting shaft 44 moves upward when descending, the side frame 7 to which the actuating connecting shaft 44 is attached, and thus the front portion of the cushion seat 2, is moved upward. On the contrary, when the front side operation dial 52 is turned, the fixed side mounting shaft 4
When viewed with reference to 1, the arm mounting shaft 45 has the fixed side mounting shaft 41
On the other hand, since the actuating connecting shaft 44 is lowered by moving up, the front portion of the cushion seat 2 is moved down.

That is, the operation connecting shaft 44, which is a shaft attachment portion between the front operation rotating member 43 and the cushion frame 3 side.
Even if the arm attachment shaft 45, which is a shaft attachment portion between the front side rotation arm 40 and the front side operation rotation member 43, does not necessarily move upward, the front side rotation member 43 is rotated to rotate the front side. When the rotary arm 40 is moved upward with respect to the fixed side mounting shaft 41 that is a shaft attachment portion with the fixed frame 12, the front side of the seat 2 is moved upward, and the front side rotary arm 40 and the front side actuation lever are moved. Even if the arm mounting shaft 45, which is a shaft attachment portion with the moving member 43, does not necessarily move downward, the front-side actuation rotating member 4
3 is rotated, the front side of the seat 2 is moved downward when the front side rotation arm 40 moves downward with respect to the fixed side mounting shaft 41 that is a shaft attachment portion with the fixed frame 12. Therefore, the vertical width of the operation connecting shaft 44 and the arm mounting shaft 45 can be made as small as possible with respect to the vertical width of the seat, the operating efficiency can be improved, the storage space can be reduced, and only the pulling load is applied to the front turning arm 40. Since it is not necessary, it can be made thin and thin, the vertical movement device can be downsized, and space can be effectively used.

Further, the fixed side mounting shaft 41 and the operating connecting shaft 4
4 and the arm attachment shaft 45, when the line segment F connecting the operation connection shaft 44 and the arm attachment shaft 45 is rotated clockwise in the drawing (side view with respect to the traveling direction of the vehicle), the operation connection shaft 44. Is configured to move upward with respect to the fixed-side mounting shaft 41, and conversely, when the line segment F rotates counterclockwise in the drawing, the operation connecting shaft 44 moves downward with respect to the fixed-side mounting shaft 41. Therefore, only the fixed side mounting shaft 41 does not move,
The operation connecting shaft 44 and the arm mounting shaft 45 move intricately, respectively, but by arranging as described above, the cushion can be formed without increasing the vertical width in side view of the operation connecting shaft 44 and the arm mounting shaft 45. The vertical width of the frame 3 can be increased, and the front link mechanism L can be downsized. In this case, when the front operation dial 52 for operating the front side is rotated forward and the rear operation dial 34 for operating the rear side is rotated rearward, the front and rear portions of the seat are respectively moved upward, so that the operation direction and the operation direction are the same. And improve operability. It should be noted that the drawing shows the arrangement viewed from the inside of the seat, and when viewed from the outside of the seat, the rotation direction of the operation dial is opposite to that described.

Further, in the front side rotation arm 40, since the front end pivotally attached to the moving side frame 7 is positioned lower than the fixed side portion pivotally attached to the fixed frame 12, the steel plate is generally made downward. The tensile strength is stronger than the compression buckling load, and the load on the seat is
Since it is a traction load that pulls the front-side turning arm 40 downward through and is not a compressive load, the plate thickness of the front-side turning arm 40 can be made thin and the weight can be reduced. In addition, the fixed frame 12
May be formed to have a front-rear length capable of pivotally attaching the front rotation arm 40 and the rear rotation arm 16. The front rotation arm 40 has its rear end attached to the fixed frame 12 and its front end attached to the side frame 7. Therefore, the fixed frame 12 has the front rotation arm 4
It is possible to omit the front portion of the shaft-attached portion with the fixed side attachment shaft 41, and to make the fixed frame 12 compact and lightweight.

Further, a front inner bulging portion which bulges inward is formed on the side frame 7 above the front operating rotary member 43, and a front inner bulging portion 46 is formed. A window part window part 47 is formed on the front side inner bulging part 46.
Front side link position fixing device front side link position fixing device 48
The gear 50 fixed to the output shaft 49 of the output shaft 49 is positioned and the front operating rotary member 43 is meshed with the gear 50. Therefore, the gear 50 located on the outer surface side of the side frame 7 by the front inner bulging portion 46. Can be engaged with each other by locating the front operating member 43 on the same surface as the front operating rotating member 43 on the inside of the side frame 7, and the front operating rotating member 43 on the inside from the outer surface side of the side frame 7. Can be operable. Therefore, in the relationship between the side frame 7 and the fixed frame 12, the fixed side mounting shaft 18, which is a shaft mounting portion at the rear portion of the side frame 7, is provided below the vicinity of the center of gravity where a load is applied when seated on the cushion seat 2. Since it is arranged, even if a considerable load is applied to the fixed side mounting shaft 18, which is the shaft mounting portion at the rear portion of the side frame 7, the side frame 7
Since no load is applied to the front end side of the, the reduction device such as a spring for reducing the operation load of the front operation dial 52 that rotates the front operation rotation member 43 does not need to be particularly provided, which simplifies the configuration and reduces the weight. Contribute to.

However, the rear sector gear 25a, which is the rear operating rotary member 25, and the front sector gear 43a, which is the front operational rotary member 43, are shared with those used for other vehicle seats. For this reason, more teeth are formed than the number of teeth used in the vertical movement device of the present application, but from the teeth at the end of the rear sector gear 25a and the front sector gear 43a to the intermediate teeth, more rear teeth are used. The excessive rotation of the side sector gear 25a and the front sector gear 43a is regulated by the regulation member 36 and the rotation regulation member 51, respectively. Therefore, the parts can be made common and the cost can be reduced. Further, the rear sector gear 25a and the front sector gear 43a are located at the positions of the through holes formed in the rear sector gear 25a through which the operating connecting shaft 27 and the shaft 26 are inserted, and the operating connecting shaft 44 and the arm mounting shaft 45. The front and rear rear sector gears 25a and 43a can be commonly used because they are formed in the same and / or symmetrical manner so that the positions of the through holes formed in the front sector gear 43a through which the In addition, the rear operating rotary member 25 and the front operating rotary member 43 are not installed by mistake, and the driver's seat and the passenger's seat are
Both sides can be shared, but this point can be shared and incorrect assembly can be prevented. Further, when a plurality of through holes are formed symmetrically, even if the rod 21 is erroneously connected to the rear sector gear 25a, the rod 21 only needs to be reattached, which simplifies the work.

[0023]

The present invention provides the fixed frames 12 and 12 mounted on the vehicle body frame side, the cushion frame 3 vertically provided to the fixed frames 12 and 12, the front side of the fixed frames 12 and 12, and the cushion frame. In a cushion seat having a front rotating arm 40 connecting the front side of the third side and an up-and-down moving device including an operating mechanism for rotating the front rotating arm 40, the front rotating arm 40 has a rear end. The front rotation arm 40 is fixed to the fixed frame 12 by a fixed side mounting shaft 41, and the front end thereof is mounted on the cushion frame 3 side by a shaft 44.
The arm mounting shaft 4 is attached to the front operating rotary member 43 for rotating the
5, the fixed side mounting shaft 41 is always positioned rearward and upward from the shaft 44, and the fixed side mounting shaft 41, the shaft 44, and the arm mounting shaft 45 are the shaft 44 and the arm mounting shaft 45. A line segment F that connects the
Since the cushion seat up-and-down device is arranged so as to move in the clockwise direction when the front side of the cushion sheet 2 is moved upward and to move in the counterclockwise direction when the front side of the cushion sheet 2 is moved downward. The vertical width of the actuating connecting shaft 44 and the arm mounting shaft 45 can be made as small as possible with respect to the vertical width of the seat, the operating efficiency can be improved, the storage space can be reduced, and only the pulling load is applied to the front rotating arm 40 as well. Therefore, the vertical movement device can be downsized, and the space can be effectively used. The present invention relates to the fixed frames 12 and 12 mounted on the vehicle body frame side, the cushion frame 3 vertically provided to the fixed frames 12 and 12, and an arbitrary operation provided by a shaft 44 on the cushion frame 3 side. Front operating member 43 which is rotated by means, and one end of which is attached to the front operating member 43 by a mounting shaft 45 and the other end of which is attached to the fixed frame 12 by a fixed mounting shaft 41. In the cushion seat having the rotating arm 40, the shaft 44 is rotated by the front operating rotary member 43 even if the mounting shaft 45 does not necessarily move upward with respect to the fixed mounting shaft 41. When moving upward with respect to the fixed side mounting shaft 41, the front side of the seat 2 is moved upward and the shaft 44
Even if the mounting shaft 45 does not necessarily move downward with respect to the fixed-side mounting shaft 41, if the mounting shaft 45 moves downward with respect to the fixed-side mounting shaft 41 by the rotation of the front-side actuation rotating member 43,
Since the cushion seat up-and-down device is configured by arranging the shaft 44, the fixed-side mounting shaft 41, and the mounting shaft 45 so as to move the front side of the seat 2 downward, the arm mounting shaft is particularly preferable. The operating connecting shaft 44 is moved up and down with respect to the fixed side mounting shaft 41 regardless of the movement of 45, so that the structure is simple and the operating connecting shaft 4 is
4 and the arm mounting shaft 45 can be moved so that the moving directions are opposite to each other, so that the vertical width between the operating connecting shaft 44 and the arm mounting shaft 45 can be made as small as possible with respect to the vertical width of the seat. The space can be reduced to improve the operating efficiency, and the storage space can be reduced.
Moreover, since only a tensile load is applied, it can be made thin and thin, the vertical movement device can be downsized, and the space can be effectively used. The present invention relates to the fixed frames 12 and 12 mounted on the body frame side, and the fixed frame 1.
Cushion frame 3 which is provided up and down with respect to 2 and 12 and a front operating rotary member 43 which is provided on the cushion frame 3 side by a shaft 44 and is rotated by an arbitrary operating means.
And one end of the rotating member 43 for front operation is attached by a mounting shaft 45, and the other end is fixed to the fixed frame 12 by the fixed side mounting shaft 4.
In the cushion seat having the front side rotation arm 40 pivotally attached by 1, the front side actuation rotation member is provided for the shaft 44 even if the attachment shaft 45 does not necessarily move upward with respect to the fixed side attachment shaft 41. When the fixed side mounting shaft 41 is moved upward by the rotation of 43, the front side of the seat 2 is moved upward, and the shaft 44 is such that the mounting shaft 45 does not necessarily move downward with respect to the fixed side mounting shaft 41. Even if it does not, the fixed side mounting shaft 41 is moved so that the front side of the seat 2 is moved downward when the front side operating rotating member 43 is rotated to lower the fixed side mounting shaft 41. The fixed side mounting shaft 41 and the shaft 44 are always positioned above the mounting shaft 45 on the rear side.
And the mounting shaft 45 are line segments F connecting the shaft 44 and the mounting shaft 45.
However, the cushion seat 2 is viewed from the side with respect to the traveling direction of the vehicle body.
The vertical movement device for the cushion seat is arranged so as to move in the clockwise direction when the front side of the cushion seat 2 is moved upward, and to move in the counterclockwise direction when the front side of the cushion seat 2 is moved downward. Since the minute F is configured to move in the clockwise rotation direction and the counterclockwise rotation direction in the side view with respect to the traveling direction of the vehicle body, the arm mounting shaft 4 is further provided.
5 regardless of the movement of 5, the operation connecting shaft 44 can be moved up and down with respect to the fixed side mounting shaft 41.

[Brief description of drawings]

FIG. 1 is a side view of a cushion sheet.

FIG. 2 is a plan view of a fixed frame and a side frame.

FIG. 3 is a partial vertical cross-sectional view of a cushion seat (an operating mechanism is provided on the left side of the seat).

FIG. 4 is a vertical sectional view of the same portion.

FIG. 5 is a vertical sectional view of the same portion.

FIG. 6 is a partial cross-sectional view.

FIG. 7 is a side view showing the relationship with the cushion frame.

FIG. 8 is a schematic diagram of a link structure.

FIG. 9 is an operation state diagram.

FIG. 10 is an operation state diagram.

FIG. 11 is an operation state diagram.

FIG. 12 is a schematic diagram for explaining an operating state.

FIG. 13 is a view showing another embodiment of the cushion frame.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Vehicle seat, 2 ... Cushion seat, 3 ... Cushion frame, 4 ... Rear bottom plate, 5 ... Standing part, 6 ... Front bottom plate, 7 ... Side frame, 10 ... Vertical plate part, 11 ... Horizontal plate part, 12 ... Fixed frame, 16 ... Rear rotation arm, 17
... Moving side mounting shaft, 18 ... Fixed side mounting shaft, 19 ... Lower end, 2
0 ... Rear window part, 21 ... Rod, 22 ... Shaft, 25 ... Rear operation rotary member, 26 ... Shaft, 27 ... Actuation connecting shaft, 29 ...
Window part, 30 ... Rear side position fixing device, 31 ... Output shaft, 32 ...
Gears, 33 ... Intermediate window, 34 ... Rear operation dial, 36
... regulating member, 40 ... front rotating arm, 41 ... fixed side mounting shaft, 42 ... front window portion, 43 ... front operating rotating member, 44
... operating connecting shaft, 45 ... arm mounting shaft, 46 ... front inner bulging portion, 47 ... window portion, 48 ... front side link position fixing device,
49 ... Output shaft, 50 ... Gear, 51 ... Rotation restriction member, 52
... front operation dial, 53 ... engaging portion.

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[Procedure amendment]

[Submission date] July 8, 1996

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 4

[Figure 5]

[Fig. 2]

[Figure 3]

FIG. 6

FIG. 7

[Figure 8]

[Figure 9]

FIG. 10

FIG. 11

FIG.

FIG. 13

Claims (3)

[Claims] 1. Fixed frames 12, 12 attached to a vehicle body frame side, a cushion frame 3 vertically provided to the fixed frames 12, 12, front sides of the fixed frames 12, 12 and a cushion frame 3 side. In the cushion seat having a front rotating arm 40 connecting the front side of the front rotating arm 40 and an up-and-down moving device including an operating mechanism for rotating the front rotating arm 40, the front rotating arm 40
Is attached to the fixed frame 12 at its rear end on the fixed side mounting shaft 4
1. The cushion frame 3 is attached to the cushion frame 3 at its front end.
The front side rotation arm 40 is mounted on the side by a shaft 44, and the front side rotation member 43 is rotated by an arm mounting shaft 45. The fixed side mounting shaft 41 is always rearward above the shaft 44. The fixed side mounting shaft 41 and the shaft 4
4 and the arm mounting shaft 45 are the shaft 44 and the arm mounting shaft 45.
A line segment F connecting to and moves in a side view with respect to the vehicle body traveling direction in the clockwise direction when moving the front side of the cushion seat 2 upward and in the counterclockwise direction when moving the front side of the cushion seat 2 downward. The vertical movement device for the cushion seat. 2. Fixed frames 12 and 12 mounted on the body frame side, a cushion frame 3 vertically provided on the fixed frames 12 and 12, and an arbitrary shaft 44 provided on the cushion frame 3 side. A front operating rotary member 43 which is rotated by an operating means, and one end of the front operating rotary member 43 is pivotally mounted by a mounting shaft 45 and the other end is pivotally mounted to the fixed frame 12 by a fixed mounting shaft 41. In the cushion seat having the front side rotation arm 40, the shaft 44 does not necessarily move upward with respect to the fixed side mounting shaft 41, and the front side rotation member 4 does not move.
When the fixed side mounting shaft 41 is moved upward by the rotation of 3, the front side of the seat 2 is moved upward, and the shaft 44 moves the mounting shaft 45 downward relative to the fixed side mounting shaft 41. Even if it does not, the shaft 44 and the fixed side attachment are arranged so as to move the front side of the seat 2 downward when the front side rotation member 43 is rotated to move the fixed side attachment shaft 41 downward. A cushion seat up-and-down moving device in which a shaft 41 and the mounting shaft 45 are arranged. 3. The fixed frames 12, 12 attached to the vehicle body frame side, the cushion frame 3 vertically provided with respect to the fixed frames 12, 12, and an arbitrary shaft provided on the cushion frame 3 side by a shaft 44. A front operating rotary member 43 which is rotated by an operating means, and one end of the front operating rotary member 43 is pivotally mounted by a mounting shaft 45 and the other end is pivotally mounted to the fixed frame 12 by a fixed mounting shaft 41. In the cushion seat having the front side rotation arm 40, the shaft 44 does not necessarily move upward with respect to the fixed side mounting shaft 41, and the front side rotation member 4 does not move.
When the fixed side mounting shaft 41 is moved upward by the rotation of 3, the front side of the seat 2 is moved upward, and the shaft 44 moves the mounting shaft 45 downward relative to the fixed side mounting shaft 41. Even if it does not move, the fixed side mounting shaft 4 is moved downward so as to move the front side of the seat 2 downward when the front side operating rotating member 43 is rotated to move the fixed side mounting shaft 41 downward.
1 is always located above the mounting shaft 45 on the rear side, and the fixed-side mounting shaft 41, the shaft 44, and the mounting shaft 45 are the shafts 44.
A line segment F connecting between the mounting shaft 45 and the mounting shaft 45 moves in a clockwise direction when the front side of the cushion seat 2 is moved upward when viewed from the side with respect to the traveling direction of the vehicle body, and counterclockwise when the front side of the cushion seat 2 is moved downward. A vertical movement device for a cushion seat arranged so as to move in a direction.