JP3081090B2 - Adjustment device for cushion seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushion seat adjusting device.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 2-51772 discloses a pair of left and right fixed frames fixed to a vehicle body frame or mounted to be movable in an arbitrary direction. A cross-sectional structure in the front-rear direction of the fixed frame in which the left and right standing portions of the frame are vertically moved by a front arm and a rear rotating arm is formed by bending a lower end of a vertical plate outward. The cushion frame has a substantially inverted L-shaped structure, and the cross-sectional structure in the front-rear direction of the cushion frame has a substantially horizontal bottom plate at both ends of which an upper portion is opened outward, and an upper portion of a vertical plate portion of the fixed frame and the cushion are provided. An open space is formed between the upper portion of the rising portion of the frame, the lower portion of the vertical plate portion of the fixed frame, and the end of the bottom plate of the cushion frame, and the fixed frame in the space portion is formed. There is described adjusting device of the cushion sheet provided with a vertical movement operation mechanism of the cushion frame over arm.

[0003]

The above-mentioned prior art has a problem in that an operating mechanism of a vertical movement device is provided on a fixed frame in an open space formed between the fixed frame and the cushion frame. That is, since the operating mechanism is provided in the open space, foreign substances such as the skin end portion and dust may be caught by the operating mechanism, which may cause malfunctions of gears and the like. In addition, since the vertical movement mechanism attached to the left and right fixed frames is exposed and the cushion frame with the pad and the skin member attached is attached to this, the pad and the skin member are exposed to the exposed part of the vertical movement mechanism during assembly work. There is a problem that it may be damaged by contact, and there is also a problem that assembly work is considerably difficult. In addition, since there is a vertical movement device in the open space between the fixed frame and the cushion frame, if a hand or the like is inserted into this space for any reason, an accident may occur, There is also a problem that the property is not sufficiently secured. Further, the fixed frame as the fitted with a vertical movement device, since it is necessary two shall not, some of the vertical movement device
The fixed frame and the cushion frame need to be separately stored. Therefore, not only the left and right fixed frames that are not connected by the connecting shaft, but also the storage of the fixed frames in an unstable state connected by only one connecting shaft require a large space, and management is troublesome. However, there is a problem that it causes an increase in cost. In addition, since the cushion frame is only attached to the fixed frame, the side portions of the cushion frame are not reinforced, and the strength of the cushion frame is increased, so that the entire cushion frame becomes a thick member and the weight increases. Therefore, when the side frame is provided on the side of the cushion frame to form the bag portion, not only is the bag portion provided with an operating mechanism of the up / down movement device and the bag is attached to the cushion frame side, but also the strength of the cushion frame is improved.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to facilitate the assembling and assembling operations, improve the reliability of the operation of the up-and-down motion device, secure the strength of the cushion frame, and reduce the weight.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a vehicle body
A pair of left and right fixed frames 16, 1 attached to the frame side
6 and at least rearward with respect to the fixed frames 16, 16
A cushion frame 3 whose side moves up and down;
The cushion frame provided inside the arms 16, 16
And a pair of left and right side frames 7, 7 separate from the
And the side frame 7 and the cushion frame 3
A bag having a space formed when the two are fixed between
The cushion frame is provided in the bag portion 19.
At least the rear rotation of the vertical movement mechanism for raising and lowering 3
A rod 22 for rotating the moving arm 11 and the rod 22
Cushion sea with sector gear 24 to operate
And a pair of left and right fixed frames 16, 16 fixed to the vehicle body frame or mounted to be movable in any direction, and a front arm 9 with respect to the fixed frames 16, 16. , 9 and the rear rotating arms 11 , 11 move at least the rear side up and down.
The cushion frame 3 and the fixed frames 16, 16
Is provided inside the cushion frame 3 and is separate from the cushion frame 3.
A pair of left and right side frames 7, 7;
The upper and lower sides of the frame 7 are the side portions of the cushion frame 3.
When fixed to the upper and lower sides respectively, a bag portion 19 having a space is formed.
So that the cushion frame 3 is moved up and down.
At least the rear pivot arm of the vertical motion mechanism
A rod 22 for rotating the rod 11 and operating the rod 22
The sector gear 24 and the side frame 7
And attach the side frame 7 to the front
Cushion cushion fixed to the side of the cushion frame 3
A pair of left and right side frames 7, inside a pair of left and right fixed frames 16, 16 fixed to the vehicle body frame or attached to be freely movable in an arbitrary direction, 7 is the front arm 9,
Linked to so that to move up and down by the 9 and the rear pivot arm 11 and 11, in what is in the side frames 7, 7 fixed to the cushion frame 3, longitudinal cross-sectional structure of the side frame 7 is vertically The lower end portion of the plate portion 15 has a substantially L-shaped structure including an inwardly bent horizontal plate portion 14, and the cross-sectional structure of the cushion frame 3 in the front-rear direction is open upward at both ends of the substantially horizontal bottom plate 4. The upper portion 5 of the side frame 7, the upper portion of the rising portion 5 of the cushion frame 3, and the side frame 7.
The end portion of the horizontal plate portion 14 and the end portion of the bottom plate 4 of the cushion frame 3 are fixed to each other to form a bag portion 19, and a vertical movement mechanism of the cushion frame 3 is formed in the bag portion 19 .
A rod 22 for rotating the rear rotating arm 11;
This is a cushion seat adjusting device provided with a sector gear 24 for operating the rod 22 .

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Denotes a vehicle seat, 2 denotes a cushion seat of the vehicle seat 1, and 3 denotes a cushion frame of the cushion seat 2. The cushion frame 3 has a lower rear bottom plate 4 below the buttocks of the seated person, a lower front bottom plate 6, and a rising upper portion 5 standing upright on the left and right sides of the rear bottom plate 4 and the front bottom plate 6. It is configured integrally and integrally (note that standing walls are provided before and after, but this is not a requirement). The left and right rising portions 5 are formed so as to be inclined so as to gradually increase toward the outside.

[0007] Side frames 7 are provided on the sides of the right and left rising portions 5 over substantially the entire length of the rising portions 5. When viewed from the front, the side frame 7 has a substantially L-shaped structure including a horizontal plate portion 14 in which a lower end portion of the vertical plate portion 15 is bent inward, and a front and rear intermediate portion of the vertical plate portion 15 expands outward. The recess 40 is formed on the inner surface of the side frame 7. 16
Is a fixed frame, which may be fixed to the vehicle body frame or mounted so as to be movable in an arbitrary direction. In this embodiment, the fixed frame is fixed to a so-called upper rail 33 of a slide rail 32. In this configuration, the fixed frame 16 moves back and forth with respect to the vehicle body, but is on the fixed side with respect to the side frame 7 that moves up and down. Reference numeral 34 denotes a lower rail of the slide rail 32.

When the front end of the cushion sheet 2 is moved back and forth without moving up and down, and the rear portion of the cushion sheet 2 is adjusted up and down without moving back and forth, the occupant can reduce the distance to an operating member such as a steering wheel. Without changing, the height of the field of view can be adjusted by raising and lowering the buttocks of the seated person, and the cushion seat 2 for the thighs can be adjusted.
Can maintain a good supporting force, and the sitting feeling can be improved. That is, if the entire cushion seat 2 is raised and the rear end is not moved so that the front end of the seat 2 below the thigh of the seated person is also moved upward, the thigh is compressed and, conversely, the seat 2 Lowering the whole lowers the feeling of support of the thighs, and in each case, increases the degree of fatigue. Therefore, if the front end of the cushion sheet 2 is not moved up and down and the rear part of the cushion sheet 2 is moved up and down, the sitting comfort is improved. The visual field can be adjusted favorably without any loss.

The vertical movement device for the cushion sheet 2 has a through hole 8 formed at a portion slightly behind the front end of the side frame 7, and a front rotation arm 9 on the outer surface of the through hole 8.
One end 50 of the rear arm 11 is rotatably mounted on the shaft 10 with the front end 12 of a rear rotating arm 11 formed in an inverted L shape on the rear side of the side frame 7. 13, and the other end 51 of the front-side rotating arm 9 is obliquely upward with respect to the one end 50 of the fixed frame 16.
The rear-side rotating arm 11 is configured such that the rear end portion 52 is axially mounted on the rear end portion of the fixed frame 16 by the shaft 18. In this case, the side frame 7
A part of the link mechanism 20 is configured. That is, the rear-side rotating arm 11 is configured such that the rear end of the cushion sheet 2 is at the lowest position and the rear end 52 (the shaft 18) is moved forward with respect to the front end 12.
The (shaft 13) is rotated upward from a position on the front side and slightly lower than the rear end portion 52 (shaft 18) so that the front end portion 12 (shaft 13) moves relative to the rear end portion 52 (shaft 18). The front rotating arm 9 is arranged so as to move up and down in a substantially linear manner.
Although the front end portion 12 (axis 13) of the rear-side rotating arm 11 moves up and down approximately linearly, it moves slightly backward since it is an arc movement centered on the axis 18, so that one end 5
In order for the 0 (axis 10) to move upward and rearward, with the rear portion of the cushion seat 2 being the lowest,
One end 50 (shaft 10) is arranged obliquely so that one end 50 (shaft 10) is on the lower side and the rear side with respect to the other end 51 (shaft 17).

Thus, a bag portion 19 having a closed space is formed between each of the right and left rising portions 5 of the cushion frame 3 and the horizontal plate portion 14 and the vertical plate portion 15 of the left and right side frames 7. The rear rotation arm 1 is inserted into the bag portion 19.
1 is provided with an operating mechanism for rotating the rotating member 1. A pair of right and left rods 22 in the front-rear direction are provided in the bag portion 19. Side frame 7
A window 46 is formed in the side plate portion 14 of the side frame 7 corresponding to the lower end 54 of the rear pivot arm 11 attached to the outside of the rod 22, and the rear end of the rod 22 faces the inside of the window 46. Instead, the lower end 54 of the rear-side rotating arm 11 located outside the window 46 and the rod 22 located inside the window 46 are pivotally mounted on the shaft 23 passing through the window 46 left and right.

When the window 46 is formed integrally with the horizontal plate 14 of the side frame 7, the rear pivot arm 11 is formed.
There does not interfere with the horizontal plate portion 14 is also rotated. The rod 22
Rear portion by forming the rear bending portion 21 is bent downward in the position of the shaft 23 is lower than the position of the shaft 13, after while still reducing the amount of movement of the rod 22
The side rotation arm 11 is configured to rotate greatly. The front end of one of the left and right rods 22 is pivotally mounted on a sector gear 24. The sector gear 24 is fixed to one end of a connecting shaft 25 in the left-right direction, and both left and right ends of the connecting shaft 25 are mounted on the vertical plate portions 15 of the left and right side frames 7. Further, an arm 35 is fixed to the other end of the connecting shaft 25, and the front end of the other rod 22 is pivotally mounted on the arm 35. Therefore, the sector gear 24 and the arm 35 are
Provided within. Further, the shape of the rising portion 5 of the cushion frame 3 is arbitrary, and may be a key-shaped rising portion 5 as shown in FIG. 7, and a bag portion 19 in which an operating mechanism enters between the cushion frame 3 and the side frame 7. May be formed.

An inner bulging portion 30 bulging inward is formed in the concave portion 40, and a window portion 31 is formed on a lower surface side of the inner bulging portion 30, and the position is fixed to the inner bulging portion 30. Device 27
The gear 26 fixed to the output shaft 28 of the
And the sector gear 24 is meshed. That is, the gear 26 on the outer surface side of the side frame 7 is
Are located on the same plane as the sector gear 24 inside the side frame 7 and are engaged with each other. The gear 2
6 is provided inside the inner bulging portion 30, so that it is outside the side frame 7. This is such that the position fixing device 27 with the gear 26 mounted thereon can be mounted on the outer surface of the side frame 7, Gear 2 is easy to assemble.
6 may be provided inside the side frame 7.

Further, the horizontal plate portion 1 below the sector gear 24 is provided.
4, a front window 32 is formed so that the horizontal plate 14 of the side frame 7 does not interfere with the rotation of the sector gear 24. As described above, the position fixing device 27 is fixed to the outer surface of the vertical plate portion 15 which is the outer surface of the concave portion 40 of the side frame 7. The position fixing device 27 has a known configuration, and the input shaft 31 of the position fixing device 27 has an operation dial 2.
9, the operation dial 29 is rotatable in any direction. When the operation dial 29 is rotated, the gear 26 is rotated. When the sector gear 24 tries to rotate the gear 26, a mechanism (brake mechanism) for stopping the gear 26 is used. ). Accordingly, in a state where the hand is released from the operation dial 29, the sector gear 24 does not rotate, whereby the rod 22 restricts the rotation of the rear rotation arm 11 to lock the link mechanism 20, and the cushion seat 2 Is held in place. Note that a motor may be used instead of the position fixing device 27.

Thus, an engaging portion 37 protruding toward the side frame 7 is formed at one end 50 of the front rotating arm 9.
On the other hand, an engagement recess 38 is formed in the side frame 7, and the engagement portion 37 is inserted into and engaged with the engagement recess 38. The engagement recess 38 is formed in an arc shape centered on the shaft 10,
The inner peripheral edge of the engaging concave portion 38 serves as an engaging surface, and the engaging portion 37 comes into contact with the engaging concave portion 38 to regulate the rotation range of the front-side rotating arm 9, and to fix the cushion frame 3 to the fixed frame 2.
It is easy to assemble it. In addition,
When the engagement portion 37 is in contact with the inner peripheral surface of the engagement concave portion 38 and the downward rotation of the front rotation arm 9 is restricted, the rear portion of the cushion sheet 2 is in an upward movement, so that the operation is performed. By rotating the dial 29 so that the rear side of the rear pivot arm 11 is at the uppermost position of the cushion seat 2,
When the rear end 52 of the rear-side rotating arm 11 is axially attached to the fixed frame 16 by the shaft 18 and the other end 51 of the front-side rotating arm 9 is axially attached to the fixed frame 16 by the shaft 17, the positional relationship between the components is correct. Can be easily assembled in the state.

A projection 41 is formed on the front inner peripheral surface 45 of the recess 40 so that the sector gear 24 comes into contact when the rear portion of the cushion seat 2 is at the uppermost position. To regulate rotation. Also,
The inner peripheral surface 47 of the window portion 46 formed in the horizontal plate portion 14 is configured such that when the rear portion of the cushion seat 2 is at the lowermost position, the lower end 54 of the rear-side rotating arm 11 abuts. The rotation of the side rotation arm 11 is restricted. 42
Is an arm fixed to the connection shaft 25, 43 is a mounting plate, and 44 is a spring. The spring 44 reduces the rotation of the operation dial 29 when the rear portion of the cushion sheet 2 is moved upward. FIG. 11 shows a second embodiment of the vertical movement mechanism, which shows a configuration in which the entire cushion sheet 2 is moved up and down. 7 and the other end 51 of the rotating arm 9 is fixed to the fixed frame 16.
The shaft 17 is attached to the shaft. Although illustration is omitted, the first
When the configuration such as the shape and arrangement of the front rotation arm 9 and the rear rotation arm 11 of the vertical movement mechanism of the embodiment is switched back and forth, the rear end of the cushion sheet 2 is moved back and forth without moving up and down, The front part of the seat 2 can be configured as a vertical movement device of the cushion seat 2 that can be adjusted up and down without moving forward and backward, and the operation mechanism of this device can be provided in the bag portion 19, and the structure of the vertical movement mechanism Is not a requirement.

[0016]

Next, the operation will be described. The front end 12 of the rear turning arm 11 is pivotally mounted on the outer surface of the rear part of the left and right side frames 7 by the shaft 13, and the front turning arm 9 is mounted on the outer surface of the front through hole 8 of the left and right side frames 7. One end 50 is brought into contact with the shaft 10, and the shaft 10 is attached to the left and right side frames 7. The two ends of the connection shaft 25 to which the sector gear 24 and the arm 35 are attached are attached to the left and right side frames 7, and the sector gear 24 and the arm 35 are connected to the rear side. The position fixing device 27 is fixed to the side frame 7 such that the rotation arm 11 and the rotation arm 11 are connected to each other by the rod 22, and the sector gear 24 meshes with the gear 26 attached to the output shaft 28 of the position fixing device 27. Next, the cushion frames 3 are fixed to the left and right side frames 7 in this state, and the rear ends 52 of the left and right rear rotating arms 11 are fixed to the left and right fixed frames 1.
6 and the other end 51 of the left and right front rotating arms 9 are respectively mounted on the fixed frame 16 by the shaft 17, and the attachment to the fixed frame 16 is completed.

In this case, the vertical plate portion 15 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 side surfaces of the side frame 7 are attached to the lower surfaces of the rear bottom plate 4 and the front bottom plate 6. Because the plate portion 14 is configured to be fixed by welding, the cushion frame 3 and the left and right side frames 7 have a so-called box structure in which each member is a strength member of each other.
Even if a thin metal plate is used, sufficient strength is ensured. Therefore, even if the side frames 7 are attached to the left and right sides of the cushion frame 3, the overall weight is reduced, and the weight can be reduced. The operation mechanism including the rod 22 for rotating the rear rotation arm 11 of the vertical movement device and the sector gear 24 (arm 35) includes the rising portion 5 of the cushion frame 3, the horizontal plate portion 14 of the side frame 7, and the vertical Since the cushion frame 3 provided with the seat vertical movement device is exposed in the bag portion 19 formed between the plate portion 15 and the front and rear rotation arms 9, Since only the moving arm 11 is used, the operation of attaching the pad to the cushion frame 3 and the operation of surrounding the pad with the skin member are not only extremely easy, but also do not damage the pad or the skin member during the operation.

When the user sits on the vehicle seat 1 and turns the operation dial 29, the output shaft 28 of the operation dial 29 is turned on.
Rotates the gear 26, and the gear 26 rotates the sector gear 24 about the connection shaft 25, and the sector gear 24
Pulls the rod 22 forward. The rod 22 rotates the rear rotating arm 11 clockwise about the axis 18 in the figure.
The rear-side rotating arm 11 turns the front end 12 forward with respect to the rear end 52 and upwards from a position slightly lower than the rear end 52 in a state where the rear of the cushion sheet 2 is lowest. The rear pivot arm 1
When 1 rotates, the front end portion 12 moves upward approximately linearly with respect to the rear end portion 52, and the rear portion of the cushion sheet 2 is largely moved upward to raise the viewpoint. The operation dial 2
When 9 is rotated in the opposite direction, the rear part of the cushion sheet 2 moves downward, and the front end of the cushion sheet 2 moves forward without moving up and down as a whole. Therefore, the rear portion of the cushion sheet 2 moves up and down without moving back and forth, so that the distance to the operation member such as the steering wheel does not change and does not affect the operability.

Since the link mechanism 20 is constituted by the rear rotating arm 11, the side frame 7, and the front rotating arm 9, the side frame 7 is moved by the upward movement of the front end 12 of the rear rotating arm 11. Moves, thereby moving one end 50 of the front-side rotating arm 9 to rotate the front-side rotating arm 9. Since the front-side rotating arm 9 is provided at an angle, the rear-side rotating arm 11 The vertical width is smaller than the rotation, and when the rear portion of the cushion sheet 2 as a whole is moved upward, the front end of the cushion sheet 2 is not moved upward.
Adjustment can be made to narrow the upward movement range toward the front. Therefore, even if the rear part of the cushion sheet 2 is raised, the front side is not so high as compared with the case where the whole cushion sheet 2 is raised, so that the seated person does not increase the feeling of pressure on the thigh.

However, the front pivot arm 9 is provided obliquely and has a longer moving distance back and forth than the pivot of the rear pivot arm 11, so that one end 50 of the front pivot arm 9 is located on the rear side. It turns toward. That is, since the movement trajectory of the front end portion 12 (axis 13) of the rear rotating arm 11 is an arc movement even though it is an approximate linear vertical movement, the front end portion 12 moves slightly backward, and the side frame is moved. 7 acts to pull one end 50 of the front rotation arm 9 backward, so that one end 50 of the front rotation arm 9 rotates upward and approaches the rear side.

Therefore, the front end moves backward with the upward movement of the rear part of the cushion seat 2, so that the feeling of pressure on the thigh is further reduced. In particular, in the case of a low-height occupant who often uses the rear portion of the occupant, the position of the knee is on the backrest seat side as compared with the occupant having a high height.
When the front end moves backward with the upward movement of the rear part, the distance from the backrest seat to the front end of the cushion sheet 2 is shortened to prevent the thigh and calf from being pressed,
The occupant's back is in close contact with the backrest seat, so that not only the optimal driving posture is achieved, but also the effect of improving the sitting feeling is great.

When the operation dial 29 is rotated in the opposite direction to lower the rear portion of the cushion sheet 2,
In the cushion sheet 2 as a whole, the front end of the cushion sheet 2 moves to the front side without substantially moving up and down, so that the viewpoint becomes lower, and even if the rear part of the cushion sheet 2 is lowered, compared to lowering the entire cushion sheet 2, Since the front side is not so low, it does not reduce the feeling of support of the seated person's thigh. In particular, in the case of a tall occupant who often lowers the viewpoint, the position of the knee is on the front side of the backrest sheet as compared with the occupant of a short stature, but when the rear part of the cushion seat 2 is moved down, As the front end moves forward with this, the distance from the backrest seat to the front end of the cushion sheet 2 is increased, and the effect of better supporting the thigh and improving the seating feeling is enhanced.

In the second embodiment shown in FIG.
When 9 is rotated, the entire cushion sheet 2 moves up and down.

In the case described above, the operating mechanism including the rod 22 for rotating the rear rotating arm 11 of the up-and-down moving device and the sector gear 24 (arm 35) is mounted on the rising portion 5 of the cushion frame 3 and on the side of the side frame 7. Since it is provided in the bag portion 19 formed between the plate portion 14 and the vertical plate portion 15, foreign substances such as skin end portions and dust are prevented from being caught in the operation mechanism, and the gears and the like are prevented from being caught. Prevent malfunction.

Also, even if a hand or the like is inserted between the left and right fixed frames 16 and the side frames 7 for any reason, there is no possibility that an accident will occur and safety is sufficiently ensured.

[0026]

According to the present invention, a pair of right and left mounted on the body frame side.
Fixed frames 16, 16 and the fixed frames 16, 1
Cushion frame that at least the rear side moves up and down with respect to 6.
Arm 3 and the inside of the fixed frames 16, 16.
And a pair of left and right sides separate from the cushion frame 3.
And a front frame 7 and a front frame 7.
When both are fixed between the cushion frame 3 and the shape
A bag portion 19 having a space to be formed is provided.
Vertical movement mechanism for raising and lowering the cushion frame 3
Of at least the rear rotation arm 11
And a sector gear 24 for operating the rod 22
And a pair of left and right fixed frames 1 fixed to a vehicle body frame or mounted to be movable in any direction.
And 6,16, small by a front arm 9,9 and rear pivot arms 11, 11 relative to the fixed frame 16, 16
The cushion frame 3 whose rear side moves up and down at least, and the front
The crusher provided inside the fixed frames 16, 16
Pair of left and right side frames separate from the frame 3
7 and 7, and the upper and lower sides of the side frame 7 are
Empty when fixed on the upper and lower sides of the cushion frame 3 respectively
The bag portion 19 having a gap is formed, and
Of the vertical movement mechanism for raising and lowering the
A rod 2 for rotating the rear rotating arm 11 at least
2 and the sector gear 24 for operating the rod 22
Attached to the side frame 7 on the side of the cushion frame 3
The side frame 7 of the cushion frame 3
An adjustment device for the cushion seat fixed to the side , and
A pair of left and right side frames 7, 7 is fixed to a pair of left and right fixed frames 16, 16 fixed to a vehicle body frame or mounted to be movable in an arbitrary direction. Rear pivot arm 11,
11 and by connecting the so that to move up and down, in what is in the side frames 7, 7 fixed to the cushion frame 3, longitudinal cross-sectional structure of the side frame 7 is inwardly the lower end of the vertical plate portion 15 The cushioning frame 3 has a substantially L-shaped structure, and a cross-sectional structure in the front-rear direction of the cushion frame 3 has a substantially horizontal bottom plate 4 at both ends of an upright portion 5 whose upper portion is outwardly opened. Vertical plate part 1
5 is fixed to the upper portion of the rising portion 5 of the cushion frame 3 and the tip of the horizontal plate portion 14 of the side frame 7 and the end of the bottom plate 4 of the cushion frame 3 to form a bag portion 19. The rear pivot arm 1 of the up-down movement mechanism of the cushion frame 3 is provided in the bag portion 19.
The rod 22 for rotating 1 and the rod 22 are operated
Since the cushion gear adjusting device provided with the sector gear 24 is provided, the operating mechanism of the vertical motion device is surrounded by the rising portion 5 of the cushion frame 3 and the horizontal plate portion 14 and the vertical plate portion 15 of the side frame 7, and A foreign object such as a terminal unit or dust is prevented from being caught in the operating mechanism, thereby preventing a malfunction of a gear or the like. Therefore, the operation of the vertical movement device is also ensured. Also, even if a hand or the like is inserted between the left and right fixed frames 16 and the side frames 7 for any reason, the operation mechanism is surrounded by the side frames 7, so that there is no danger of an accident, and The nature is also sufficiently secured. Further, since the vertical movement mechanism is not exposed, the pad or the skin member does not come into contact with the exposed portion of the operation mechanism and is not damaged, and the assembling work of attaching the pad and the skin member to the cushion frame 3 is easy. In addition, the work of attaching the cushion frame 3 in this state to the fixed frame 16 is also easy. In addition, the cushion frame 3 and the left and right side frames 7 have a so-called box structure in which the members are strength members of each other, and sufficient strength is secured even when 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 reduced, and the weight can be reduced. Further, the cushion frame 3 may be stored with the side frame 7 attached to the cushion frame 3 irrespective of the presence or absence of the vertical movement device. The cushion frame 3, the side frame 7 and the fixed frame 16 can have the same structure. Since the side frame 7 is attached to the frame 3, a space can be omitted, which contributes to cost reduction.

[Brief description of the drawings]

FIG. 1 is a perspective view of an assembled state.

FIG. 2 is a side view.

FIG. 3 is a plan view of a main part.

FIG. 4 is a perspective view of a side frame.

FIG. 5 is a sectional view of a main part.

FIG. 6 is a sectional view of a main part.

FIG. 7 is a view of a second embodiment of a bag portion.

FIG. 8 is an operation state diagram.

FIG. 9 is a schematic diagram showing an operation state of a link.

FIG. 10 is an operation state diagram.

FIG. 11 is a view showing a second embodiment of the vertical movement device.

[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, 8 ... Through hole, 9 ... Front rotating arm, 10 ... Shaft, 11 rear swing arm, 12 front end,
13 ... shaft, 14 ... horizontal plate portion, 15 ... vertical plate portion, 16 ... fixed frame, 17 ... shaft, 18 ... shaft, 19 ... space portion, 20 ... link mechanism, 21 ... rear bent portion, 22 ... rod, 23 ...
Shaft, 24: sector gear, 25: shaft, 26: gear, 27
... position fixing device, 28 ... output shaft, 29 ... operation dial,
30 ... inner bulge, 31, 32 ... window, 35 ... arm,
37: engagement projection, 38: elongated hole, 40: recess, 41: projection, 42: arm, 43: mounting plate, 44: spring, 45 ...
Front inner peripheral surface, 46: window portion, 47: inner peripheral surface, 50: one end,
51 ... other end, 52 ... rear end, 54 ... lower end.

Claims (3)

(57) [Claims] 1. A pair of left and right fixed members attached to a body frame side.
The fixed frames 16 and 16 and the fixed frames 16 and 16
A cushion frame that moves up and down at least on the rear side
3, and provided inside the fixed frames 16, 16
A pair of left and right side frames separate from the cushion frame 3
Frames 7, 7 and the side frame 7 and the
It is formed when both are fixed between the
A bag portion 19 having a space to be provided is provided.
A vertical movement mechanism for raising and lowering the cushion frame 3
A rod 2 for rotating at least the rear rotating arm 11
2 and a sector gear 24 for operating the rod 22 are provided.
An adjustment device for the girder cushion seat . 2. A pair of right and left fixed frame 16, 16 are mounted movably adjusted or any direction and is fixed to the vehicle body frame, the stationary frame 16,
16 and the front arms 9 and 9 and the rear pivot arm 1
Cushion that at least the rear side moves up and down by 1 and 11
Frame 3 and the inside of the fixed frames 16
A pair of left and right separate from the cushion frame 3 provided
Side frames 7, 7
7 on the side of the cushion frame 3
When each is fixed, it forms a bag portion 19 having a space.
Up and down movement to make up and down the cushion frame 3
At least the rear rotation arm 11 of the operation mechanism is turned.
Rod 22 to be moved and sector to operate the rod 22
Gear 24 and the cushion frame of the side frame 7.
And attach the side frame 7 to the cross
Adjust the cushion seat fixed to the side of the cushion frame 3.
Knot device . 3. A pair of left and right side frames 7, 7 inside the pair of left and right fixed frames 16, 16 which are fixed to the vehicle body frame or mounted to be movable in any direction. linked to so that to move up and down by the arm 9, 9 and the rear pivot arm 11, 11,
A cushion frame 3 is provided on the side frames 7 and 7.
In the fixed structure, the cross-sectional structure of the side frame 7 in the front-rear direction is a substantially L-shaped structure including a horizontal plate portion 14 in which a lower end portion of the vertical plate portion 15 is bent inward. The cross-sectional structure of the bottom plate 4 is formed as a rising portion 5 in which both ends of the substantially horizontal bottom plate 4 open outward, and the upper portion of the vertical plate portion 15 of the side frame 7, the upper portion of the rising portion 5 of the cushion frame 3, and the Horizontal plate 1
4 and the end of the bottom plate 4 of the cushion frame 3 are respectively fixed to form a bag portion 19, and the rear portion of the up-down movement mechanism of the cushion frame 3 is provided in the bag portion 19.
A rod 22 for rotating the side rotation arm 11 and the rod 2
2. A cushion seat adjusting device provided with a sector gear 24 for operating the second cushion gear.