JP3012160B2 - Vertical movement 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 device for moving a cushion sheet up and down.

[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. It has been described for vertical movement 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. Also, since the fixed frame requires two types, one with a vertical motion device and one without it, a fixed frame with a difference in the presence or absence of a vertical motion device will be selected and attached to the cushion frame, The fixed frame and the cushion frame are stored separately. 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. Also, since the cushion frame is only attached to the fixed frame,
The side portions of the cushion frame are not reinforced, and there is also a problem that the cushion frame as a whole becomes a plate-thick member in order to secure strength, 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. Further, if the operating mechanism is devised, the strength of the side frame is also 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]

Therefore, according to the present invention , a bag portion 19 is formed on both left and right sides of the cushion frame 3.
Side frames 7, 7 are fixed to the vehicle body respectively, and the side frames 7, 7 are fixed to the vehicle body side or mounted on a pair of left and right fixed frames 16, 16 which are mounted to be movable in any direction. Side rotation arms 11, 11
By mounting the rear pivot arm 11, the rear end portion 52 to the fixed frame 16 by a shaft 18, the front end portion 12 and the axial wear the side frame 7 by a shaft 13, and the front end portion 12 A projecting portion 54 formed below between the rear end portions 52 faces the outside of the window portion 46 formed in the side frame 7, and the inside of the window portion 46 is provided inside the bag portion 19 by an input from an operation member. Rod 2 to move back and forth
2 is a cushion sheet in which a bent portion 21 bent downward is formed at the rear portion of the cushion sheet 2 and the rear rotating arm 11 and the bent portion 21 of the rod 22 are connected by a shaft 23 passing right and left through the window portion 46. This is a vertical movement device. The present invention also provides the apparatus, inside the bag portion 19
A sector gear 24 having the front end of the rod 22 mounted thereon is provided.
The sector gear 24 is located outside the side frame 7.
Gear 26 and a window formed in the side frame 7
This is a device for vertically moving a cushion sheet meshed via a portion 31 . Further, the present invention is to the left and right outer sides of the raised portion 5 provided by standing on the right and left sides of the bottom plate 4 of the cushion frame 3, the side frame 7 to form the bag portion 19 between the upstanding top 5, 7 are fixed to each other, and the side frames 7, 7 are fixed to the vehicle body frame or mounted inside the pair of left and right fixed frames 16, 16 which are attached to be freely movable in any direction. 9 and the rear rotating arms 11, 11. The front arm 9 has the other end 51 attached to the fixed frame 16 ,
One end 50 is axially attached to each of the side frames 7, and the other end 51 is disposed obliquely above the one end 50 so that the front side of the cushion frame 3 moves back and forth. The rear end 52 is fixed to the fixed frame 16 by the shaft 18, the front end 12 of the arm 11 is fixed to the side frame 7 by the shaft 13, and the shaft 13 is fixed to the shaft 18. To move up and down in an approximate linear manner.
3 is arranged so as to move up and down approximately linearly with respect to the shaft 18, and a sector gear meshed with a gear 26 provided outside the side frame 7 via a window 31 in the bag portion 19. The arm 21 is provided with a bent portion 21 which is bent below a rear portion of the rod 22 which is axially mounted on the sector gear 24 and moves back and forth. This is a cushion seat up-and-down moving device in which a window 46 formed in the frame 7 is connected by a shaft 23 penetrating left and right.

[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. Side frames 7 are provided on the side portions 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. Thus, the side frame 7 (cushion frame 3) and the fixed frame 1
6, a vertical movement device for the cushion sheet 2 is provided. The vertical movement device of the cushion sheet 2 forms a through hole 8 at a portion slightly behind the front end of the side frame 7,
One end 50 of a front-side rotating arm 9 is brought into contact with the outer surface of the through hole 8 and is rotatably mounted on a shaft 10. The rear side of the side frame 7 is formed into an inverted L-shape. Moving arm 11
Of the front-side rotating arm 9 is pivotally attached to the fixed frame 16 so that the other end 51 of the front-side rotating arm 9 is obliquely upward with respect to the one end 50 by the shaft 17. The rear-side rotating arm 11 is configured such that a rear end portion 52 is axially attached to a rear end portion of the fixed frame 16 by the shaft 18.
In this case, the side frame 7 forms a part of the link mechanism 20.

A bag portion 19 having a substantially closed space is provided between the left and right 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, respectively.
And an operating mechanism for rotating the rear-side rotating arm 11 is provided in the bag portion 19. A window 46 is formed in the side plate portion 14 of the side frame 7 corresponding to the projection 54 below the front end portion 12 of the rear turning arm 11 attached to the outside of the side frame 7. A pair of left and right front-rear rods 22 are provided in the bag portion 19, and the rear ends of the rods 22 face the inside of the window portion 46, respectively. The projecting portion 54 and the rod 22 located inside the window portion 46 are axially mounted on the shaft 23 that passes through the window portion 46 left and right. The rear portion of the rod 22 is bent downward to form a rear lower bent portion 21. That is, when the position of the shaft 23 at the shaft attachment portion between the rod 22 and the rear rotation arm 11 is lower than the position of the shaft 13, the rod 2
When the rod 22 is simply formed into a linear shape, the rear-side rotating arm 11 can be largely rotated while keeping the amount of movement of the rod 2 small. Although the interference range becomes large and the window portion 46 is formed large (FIG. 11), when the rear portion of the rod 22 is formed in the rear lower bent portion 21 bent downward, the rotation locus of the shaft 23 is formed. Window 46 corresponding to
And the window 46 can be made smaller. When the window portion 46 is formed integrally with the horizontal plate portion 14 of the side frame 7, the horizontal plate portion 1 can be formed even when the rear rotation arm 11 rotates.
4 does not interfere. 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 connected to the vertical plate portions 1 of the left and right side frames 7.
Axle 5 An arm 35 is provided at the other end of the connecting shaft 25.
, And the front end of the other rod 22 is axially mounted on the arm 35. Therefore, the sector gear 24 and the arm 3
5 is provided in the bag portion 19.

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.
It is sufficient that a bag portion 19 in which the operating mechanism is inserted is formed.
An inner bulging portion 30 bulging inward is formed in the concave portion 40, and a window 31 is formed on a lower surface side of the inner bulging portion 30. Output shaft 2
The gear 26 fixed to 8 is positioned, and the sector gear 24 meshes with the gear 26. That is, the gear 26 on the outer surface of the side frame 7 is positioned on the same surface as the sector gear 24 on the inner side of the side frame 7 by the inner bulging portion 30 so as to mesh with each other. Since the gear 26 is provided inside the inner bulging portion 30, the gear 26 is located outside the side frame 7. This is so that the position fixing device 27 with the gear 26 attached can be attached to the outer surface of the side frame 7. Thus, the gear 26 may be provided inside the side frame 7. Further, a front window 32 is formed in the horizontal plate 14 below the sector gear 24 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 provided with the concave portion 40 of the side frame 7.
Is fixed to the outer side surface of the vertical plate portion 15 which is the outer side surface. The position fixing device 27 has a known configuration, and an operation dial 29 is attached to an input shaft 31 of the position fixing device 27, and the operation dial 29 can rotate in any direction, and when rotated, the gear 26 rotates. However, when the sector gear 24 tries to rotate the gear 26, a mechanism (brake mechanism) for stopping the rotation is incorporated. Therefore, when the operation dial 29 is released, the sector gear 2
4 does not rotate, whereby the rod 22 restricts the rotation of the rear rotation arm 11 to lock the link mechanism 20,
The cushion sheet 2 is held at a predetermined position. Note that a motor may be used instead of the position fixing device 27.

Thus, an engagement portion 37 protruding toward the side frame 7 is formed at one end 50 of the front rotation 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 engaging recess 38 is formed in an arc shape centered on the shaft 10, and an inner peripheral edge of the engaging recess 38 serves as an engaging surface, and the engaging portion 3
When the cushion frame 3 contacts the fixed frame 2, the range of rotation of the front rotation arm 9 is restricted by the contact of the cushion frame 3 with the fixed frame 2. 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 cushion sheet 2
The operation dial 2 is
9 is rotated so that the rear portion of the rear pivot arm 11 is at the uppermost position, and the rear end 52 of the rear pivot arm 11 is
When the other end 51 of the front-side rotating arm 9 is axially attached to the fixed frame 16 by the shaft 17, the components can be easily assembled in a state where the positional relationship between the components is correct. Further, a projection 41 is formed on the front inner peripheral surface 45 of the concave portion 40, and the projection 41 rotates so that the sector gear 24 comes into contact when the rear portion of the cushion sheet 2 is at the uppermost position. Regulating. The window 4 formed in the horizontal plate 14
When the rear portion of the cushion seat 2 is at the lowermost position, the inner peripheral surface 47 of the rear surface 6 contacts the protruding portion 54 of the rear rotation arm 11 so that the rear rotation arm 11 rotates. Regulating. 42 is an arm fixed to the connecting shaft 25,
Reference numeral 43 denotes a mounting plate, and reference numeral 44 denotes 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.

The vertical movement device moves the cushion sheet 2 up and down. 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 moved up and down without moving back and forth. When possible,
The seated occupant can not only adjust the height of the visual field by raising and lowering the buttocks of the seated occupant without changing the distance to the operating member such as the steering wheel, but also improve the supporting force of the cushion seat 2 on the thigh. Can be maintained, and the seating feeling can be improved. That is, when the entire cushion seat 2 is raised to raise not only the rear part but also the front end of the seat 2 below the thigh of the seated person, the thigh is compressed, and conversely, the entire seat 2 is Lowering reduces the feeling of support of the thigh,
In any case, the degree of fatigue increases, so the front end of the cushion sheet 2 is not moved up and down.
By raising and lowering the rear part, the field of view can be adjusted well without impairing the sitting comfort. Therefore, the relationship between the front rotation arm 9 and the rear rotation arm 11 is based on the relationship between the rear rotation arm 1 and the rear rotation arm 1.
Reference numeral 1 denotes a state in which the rear part of the cushion sheet 2 is the lowest, and the front end part 12 (the shaft 1) is opposed to the rear end part 52 (the shaft 18).
3) is rotated forward from a position slightly lower than the rear end 52 (the shaft 18) on the front side, and the front end 12 (the shaft 13) is rotated.
Are arranged so as to move up and down approximately linearly with respect to a rear end portion 52 (axis 18), and the front rotation arm 9 is similar to the front end portion 12 (axis 13) of the rear rotation arm 11. Even if it moves up and down in a straight line, it moves slightly backward because it is an arc movement centered on the shaft 18, so that one end 50 (shaft 1)
0) is moved upward and rearward, and the other end 51
It is arranged obliquely so that one end 50 (axis 10) is on the lower side and the rear side with respect to (axis 17).

FIG. 12 shows a second embodiment of the vertical movement mechanism, which shows a structure for raising and lowering the entire cushion sheet 2.
In order to raise and lower the entire cushion sheet 2, one end 50 of the front rotation arm 9 is pivotally attached to the side frame 7 in a substantially horizontal state by the shaft 10, and the other end 51 of the rotation arm 9 is fixed to the fixed frame 16 by the shaft 17. Axle. Although not shown, the front rotation arm 9 of the vertical movement mechanism of the first embodiment is not shown.
When the configuration such as the shape and arrangement of the rear rotating arm 11 is switched back and forth, the rear end of the cushion sheet 2 is moved back and forth without moving up and down, and the front portion of the cushion sheet 2 is adjusted up and down without moving back and forth. It can be configured as a possible vertical movement device for the cushion sheet 2, and the operation mechanism of this device can be provided in the bag portion 19, and the configuration of the vertical movement mechanism is not a requirement.

[0012]

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 horizontal plate portion 14 of the side frame 7 is attached to the lower surfaces of the rear bottom plate 4 and the front bottom plate 6. Is welded and fixed, 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.

A rod 22 for rotating the rear rotating arm 11 of the vertical movement device and a sector gear 24 (the arm 3)
The operation mechanism consisting of 5) includes a rising portion 5 of the cushion frame 3 and a horizontal plate portion 14 and a vertical plate portion 15 of the side frame 7.
Since it is provided in the bag portion 19 formed between
Even in the cushion frame 3 to which the seat vertical movement device is attached, only the front rotation arm 9 and the rear rotation arm 11 are exposed. In addition, the work of surrounding the pad is not only extremely easy, but also the pad and the skin member are not damaged during the work. When the user sits on the vehicle seat 1 and turns the operation dial 29, the output shaft 28 of the operation dial 29 rotates to rotate the gear 26, and the gear 26 rotates the sector gear 24 about the connection shaft 25, 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. When the rear rotation arm 11 is rotated, the front end 12 moves upward approximately linearly with respect to the rear end 52, so that the rear part of the cushion seat 2 is largely moved upward. And raise the viewpoint. When the operation dial 29 is rotated in the opposite direction, the rear part of the cushion sheet 2 moves down,
As a whole, the front end of the cushion sheet 2 moves to the front without moving up and down. 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. Since the front rotation arm 9 is provided obliquely and has a longer moving distance in the front and rear direction than the rotation of the rear rotation arm 11, one end 50 of the front rotation arm 9 rotates toward the rear side. Move. That is, the front end 1 of the rear-side rotating arm 11
Since the movement locus of the axis 2 (axis 13) is an arc movement even though it is an approximate linear up and down movement, the front end portion 12 moves slightly backward, and the side frame 7 is
Of the front-side rotating arm 9 is rotated upward so as to approach the rear side. For this reason, 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 part by moving up, the position of the knee is on the backrest seat side as compared with the high-height occupant. When the front end moves backward, the distance from the backrest seat to the front end of the cushion sheet 2 is reduced, preventing 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. 12, when the operation dial 29 is rotated, the entire cushion sheet 2 moves up and down. In the above case, the rear portion of the rod 22 is bent downward to form the rear lower bent portion 21.
As shown in FIG. 1, the interference range between the rod 22 supposed to be simply formed in a linear shape and the horizontal plate portion 14 of the side frame 7 is reduced, the window 46 is reduced, and the rotation of the shaft 23 is performed. What is necessary is just to form according to a locus | trajectory, and since the intensity | strength of the side frame 7 is not reduced,
The whole can be made thinner, contributing to weight reduction.

[0016]

According to the present invention, the cushion frame 3 is provided on both the left and right sides.
Remove the side frames 7, 7 so as to form a bag portion 19.
Each of the side frames 7, 7 is fixed to the vehicle body side or mounted on a pair of left and right fixed frames 16, 16 attached to the vehicle so as to be movable in any direction. 11, and the rear-side rotating arm 11 has its rear end 52 fixed to the fixed
The frame 16, the front end portion 12 pivotally attached, respectively, respectively on the side frames 7 by a shaft 13, the front end 12 and rear end
The projecting part 54 formed below between the parts 52 faces the outside of the window part 46 formed in the side frame 7, and the inside of the window part 46 receives the bag part 19 by input from an operation member.
A shaft 23 that passes through the window 46 to the left and right through the rear rotating arm 11 and the bent portion 21 of the rod 22 with the bent portion 21 formed downwardly facing the rear portion of the rod 22 that moves back and forth inside. , The rear lower bending portion 21 at the rear of the rod 22.
As shown in FIG. 11, the interference range of the rod 22 assumed to be simply formed in a linear shape with the horizontal plate portion 14 of the side frame 7 can be reduced. Therefore, the size of the window portion 46 may be reduced, and the strength of the side frame 7 is not reduced, so that the entire side frame 7 can be made thinner, which contributes to a reduction in weight and size. Also, rod 2
Numeral 2 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 prevents foreign substances such as skin terminal portions and dust from being caught, thereby preventing malfunction. Therefore, the operation of the vertical movement device is also ensured. 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. Further, according to the present invention, in the device, the front end of the rod 22 is attached to the inside of the bag portion 19.
And a sector gear 24 is provided.
Wherein a gear 26 provided on the outer side of the serial side frame 7 Sai
The vertical movement device of the cushion sheet meshed through the window 31 formed in the door frame 7 is used .
The rod 22, which moves back and forth, 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, so that foreign substances such as skin terminal portions and dust are caught in the operating mechanism. Not only prevents the gears and the like from malfunctioning, but also prevents the rear portion of the rod 22 from bending
By doing so, the interference range of the side frame 7 with the horizontal plate portion 14 can be reduced to reduce the size of the window portion 46, and the strength of the side frame 7 is not reduced, so that the entire side frame 7 can be made thinner and lighter and smaller. . Also, sector gear 2
Since the rod 22 which moves back and forth with the rod 4 is not exposed, the pad or the skin member does not come into contact with the exposed portion of the operating 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. Further, the present invention relates to a bottom plate of the cushion frame 3 .
Side frames 7, 7 are respectively fixed to the left and right outer sides of the rising portion 5 provided on the left and right sides of the side 4 so as to form a bag portion 19 between the rising portion 5 and the side frame 7, Reference numeral 7 denotes a pair of left and right fixed frames 16, 16 which are fixed to the vehicle body frame or are attached so as to be movable in any direction. The front arm 9 has the other end 51 axially attached to the fixed frame 16 and the one end 50 axially attached to the side frame 7, and the other end 51 to the one end 50 so that the front side of the cushion frame 3 moves back and forth. arranged obliquely upward, the rear pivot arm 11, the solid by its rear end 52 to form an inverted L-shaped shaft 18
On the fixed frame 16 , the front end 12 of the arm 11 is
3 and the shaft 13 is arranged so as to move up and down approximately linearly with respect to the shaft 18. The bag gear 19 is provided with a sector gear 24 which meshes with a gear 26 provided outside the side frame 7 via a window 31 in the bag portion 19. A bent portion 21 formed to bend below a rear portion of a rod 22 that is worn and moved back and forth.
Is a vertical movement device for a cushion seat, which is connected to a projecting portion 54 formed below the front end portion 12 of the arm 11 by a shaft 23 which penetrates a window 46 formed in the side frame 7 from side to side. The person can not only adjust the height of the field of view by raising and lowering the buttocks of the seated person without changing the distance from the operating member such as the steering wheel, but also improve the supporting force of the cushion sheet 2 with respect to the thighs. While the cushion sheet 2 can be maintained and the seating feeling is also improved, the range of interference with the side plate portion 14 of the side frame 7 can be reduced by forming the rear portion of the rod 22 as the bent portion 21. Since the size of the side frame 7 can be reduced and the strength of the side frame 7 is not reduced, the entire side frame 7 can be reduced in thickness, and the weight and size can be reduced.

[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 an explanatory diagram of an operation state of a bent portion 21.

FIG. 12 is a diagram of 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. Bag portions on both left and right sides of the cushion frame 3.
19 to form the side frames 7, 7 respectively.
The left and right side frames 7, 7 are fixed to the vehicle body side or mounted inside the pair of left and right fixed frames 16, 16 which are attached to the body so as to be freely movable by a front arm 9, 9 and a rear rotating arm 11, 11. mounting, the rear pivot arm 11, the fixed frame and the rear end portion 52 by a shaft 18
A front end portion 12 is attached to the side frame 7 by a shaft 13 on a shaft 16 , and the front end portion 12 and the rear end portion 5
The projections 54 formed below the space between the windows 2 face the outsides of the windows 46 formed in the side frames 7.
A bent portion 21 which is bent downward is faced to a rear portion of a rod 22 which moves back and forth in the bag portion 19 by an input from an operating member, and the rear rotating arm 11 and the bent portion of the rod 22 21. A vertical movement device for a cushion seat, wherein the cushioning member 21 is connected to the shaft portion 23 by the shaft 23 penetrating the window portion 46 left and right. 2. The bag according to claim 1, wherein
A sector gear 24 having the front end of the rod 22 mounted thereon is provided.
The sector gear 24 is located outside the side frame 7.
Gear 26 and a window formed in the side frame 7
A vertically moving device for the cushion sheet engaged via the portion 31 . Wherein the left and right outer sides of the cookie Chillon frame 3 of the bottom plate rising portion 5 provided left and right sides to is erected of 4, the upstanding
The side frames 7, 7 are respectively fixed so as to form a bag portion 19 with the portion 5, and the side frames 7, 7 are fixed to the body frame or mounted so as to be movable and adjustable in any direction. The front arm 9 is attached to the inside of a pair of left and right fixed frames 16, 16 by rear arms 11, 11. The front arm 9 has the other end 51 attached to the fixed frame 16 and one end 50 attached to the fixed frame 16. The other end 51 is disposed obliquely above the one end 50 so that the front side of the cushion frame 3 moves back and forth, and the rear rotating arm 11 is formed in an inverted L-shape. The rear end 52 is fixed to the fixed frame by the shaft 18.
16 , the front end 12 of the arm 11 is axially attached to the side frame 7 by a shaft 13, and
3 is arranged so as to move up and down approximately linearly with respect to the shaft 18, and the shaft 13 is arranged so as to move up and down approximately linearly with respect to the shaft 18. Is provided with a sector gear 24 which meshes with a gear 26 provided outside the side frame 7 through a window 31. The rod 2 which is axially mounted on the sector gear 24 and moves back and forth.
2 is connected to a protruding portion 54 formed below the front end portion 12 of the arm 11 by a shaft 23 which penetrates a window 46 formed in the side frame 7 from side to side. Vertical movement device for cushion seat.