JPH0228096Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a seat whose height and inclination can be adjusted individually.

(Prior art) In general automobiles, in order to obtain the optimal driving posture, the
It is known that the height and inclination of the seat can be adjusted, and specifically, the front and rear parts of the seat are supported so that they can be raised and lowered in stages by manual operation.

(Problem to be solved by the invention) However, with this configuration, when adjusting the height of the seat, the adjustment mechanisms on the front side and the rear side must be raised or lowered alternately. The operation was complicated, and the seat height could not be adjusted with a single touch while maintaining a constant seat inclination. In addition, since the operating body of the adjustment mechanism is provided on the base side that supports the seat cushion frame, when the set height of the seat increases, the operating body moves away from the driver, making it difficult for the driver to However, there was also the drawback that it was difficult to grasp the operating body.

Therefore, the present invention has developed a seat height that allows the driver to easily operate the operating body by adjusting the seat inclination or seat height with one touch while maintaining the seat height or seat inclination constant. The object of the present invention is to provide a height and inclination adjustment device.

(Means for solving the problem) In the present invention, as a means to solve the above problem, in a seat equipped with a height adjustment mechanism and a tilt adjustment mechanism, the front and rear link plates are connected by an interlocking link. A height adjustment mechanism that connects a telescoping adjustment mechanism that can be locked at any position between a link mechanism and a cushion frame, and a plurality of tooth shapes that are fixed to the shaft on one side and pivoted on the base on the other. The invention is characterized in that both mechanisms, an inclination adjustment mechanism consisting of a tooth plate having a tooth profile, a locking pin that locks on the tooth profile, a lock plate through which the locking pin is inserted, and a front link plate, are mounted in the cushion frame. It is something.

(Function) In this invention, by having such a configuration,
While the occupant is sitting on the seat, the seat height can be adjusted with a single touch without changing the seat inclination, and even if the seat height setting becomes higher, the above seat height and inclination adjustments can be made. Able to operate the operating equipment for use without difficulty.

Therefore, according to the seat height and inclination adjustment device of the present invention, when adjusting the seat height and inclination according to the physique and preference of the driver, the seat height or inclination can be kept constant. This allows for one-touch adjustment of the inclination or height of the seat while the seat is in its original state, and is equipped with both a seat height adjustment mechanism and a tilt adjustment mechanism within the seat frame, allowing the positional relationship between the seated person and each lever to change. Practical effects such as ease of operation can be obtained.

(Practical Example) Hereinafter, a practical example of the present invention will be explained with reference to the drawings.

In FIG. 1, a seat 1 consisting of a seat cushion 2 and a seat back 3 is mounted on a floor 5 via a base 4. As shown in FIG. At a side end of the seat cushion 2, a first operating lever 6 for raising and lowering the seat in parallel, and a second operating lever 7 for moving the front end of the seat cushion up and down.
A third operating lever 8 for tilting the seat back 3 is provided, and through these operations, the seat cushion 2 is raised and lowered and the seat back 3 is tilted. In the illustrated example,
The base 4 is composed of a fixed rail 4a fixed to the floor 5 and a seat slide rail 4b that slides back and forth with respect to the fixed rail 4a, but if the slide type is not adopted, the seat 1 is attached to the mounting frame. It is attached directly to the floor 5 by.

2 to 4 and 8, a pair of left and right front bearings 9 and a pair of rear bearings 10 are protruded from the front and rear ends of the seat slide rail 4b, respectively. A long hole portion 9a that is long in the front-rear direction is formed. On the other hand, on both left and right sides of the rectangular seat frame 11 incorporated in the seat cushion 2 (see Figure 1), a reinforcing member and a mounting support member for the height adjustment mechanism are installed from approximately the center to the rear. A dual-purpose rear reinforcing member 12 is provided, and this rear reinforcing member 12 has flange portions long in the front-back direction formed on both sides. A coaxial hole passing through both the flange surfaces of the left and right rear reinforcing members 12 and the side surface of the seat frame 11 is formed near the center of the side surface of the seat frame 11, and the operating rotation shaft 14 is rotatably supported. The tubular bearing 14a is inserted and fixed into the through hole.

The rear reinforcing member 12 has flange portions long in the front-rear direction on both sides. A coaxial hole passing through both flange surfaces of the left and right rear reinforcing members 12 and the side surface of the seat frame 11 is formed approximately in the center of the side surface of the seat frame 11,
A tubular bearing 14a is inserted and fixed into the through hole so that the operation rotation shaft 14 is rotatably supported.

The first operating lever 6 is fixed to the end of the operating rotation shaft 14 that protrudes outward from the seat frame 11, and a pin 15 is fixed to the inner end of the operating rotation shaft 14.
An arm 15 with a is fixed.

The holes 10a of the pair of left and right rear bearings 10 and the holes 16b of the rear link plate 16 are each rotatably supported by a pin 44. The hole 16c of this one rear link plate 16, the pin 15a of the swinging end of the arm 15, and the hole 17b of the front link plate 17 are interconnected to each hole of the interlocking link 18 by a pin 44. ing.
Therefore, the arm 15, the front link plate 17, the rear link plate 16, and the interlocking link 18 are operated by the raising/lowering operation of the first operating lever 6, and in this case, the front link plate 1
7. The rear link plate 16 constitutes a link mechanism 19 that is raised and lowered. In addition, this arm 15
A locking portion 12a integrally formed with the rear auxiliary member 12 is provided on the rotating circumference of the arm 15.
It regulates the fluctuation of the That is, the range in which the first operating lever 6 can be raised and lowered, that is, the height adjustment range of the seat 1 is regulated. In such a link mechanism, a crank-shaped connecting shaft 20 is fixed to the tilting end portion 16a of the rear link plate, and both ends of this connecting shaft are supported by bearings formed on the left and right rear reinforcing members 12. There is.

The left and right front link plates 17 are rigidly connected to each other by a tube shaft 21, and one end of a coaxial shaft 22 rotatably provided on the tube shaft 21, that is, the side where the link mechanism 19 is installed, has an inclination adjustment mechanism. Body X is attached. This inclination adjustment mechanism X is
It is composed of a tooth plate 23 having a three-stage tooth profile 23a, a lock plate 24, a lock pin 25, a tension spring 26, and the like. The tooth plate 23
are fixed to both sides of a shaft 22, and both tip ends of the shaft 22 are rotatably inserted into bearings formed on a flange 28a of a front end corner reinforcing member 28 fixed to the front part of the seat frame 11. Furthermore, a pipe shaft 24a, which is welded to the lock plate 24 and whose one end is solid, is rotatably inserted into the tip of the shaft 22 on the side where the adjustment mechanism X is mounted.
The solid portion of the pipe shaft 24a is rotatably inserted into a bearing formed in the seat frame 11 and protrudes to the outside of the seat frame 11, to which the second operating lever 7 is attached. In addition, the shaft 2
A support pin 29 is provided at one end of the tooth plate 23 fixed to the front bearing 2, and this support pin is supported by the elongated hole 9a of the front bearing 9. On the other hand,
Lock plate 2 rotatably supported on shaft 22
Long hole 24b provided at the upper end of 4 and tube shaft 21
Locking pins 25 are respectively inserted into open elongated holes 17a provided at the upper end of the front link plate 17 fixed to the front link plate 17, and are locked to one toothed portion 23a of the toothed plate 23. On the other hand, on the opposite side of the link mechanism, there is a front link plate 17 and a rear link plate 16.
are interconnected by interlocking links 18.

Next, 30 indicates a telescopic adjustment mechanism. As this telescopic adjustment mechanism 30, it is possible to use one that is telescopic and lockable at any length, and such telescopic adjustment mechanisms are known. In the illustrated example, as shown in FIGS. 2 to 4 and 8,
Inside the outer cylinder 32 into which the retractable rod 31 is fitted, a coiled lock spring having a diameter smaller than that of the retractable rod 31 in its natural state is provided so as to fit around the retractable rod 31, and this coil spring is expanded. When the coil spring is diameter-reduced, it becomes unlocked and the retractable rod 31 can move in and out of the outer cylinder 32, and when the coil spring contracts in diameter due to its own elastic force, it wraps around the retractable rod 31. The ejection rod 31 and the outer cylinder 32 are integrated, and the locking state is established.
A type that prevents movement in and out of the door is used. Further, when a load is applied to the extension rod 31 in the extension/retraction direction, an even larger frictional force is generated due to the elastic deformation of the coil spring, increasing the locking force.

Such a telescopic adjustment mechanism 30 is shown in FIGS.
As shown in the figure, a base end 32a of the outer cylinder 32 is swingably supported by a pin 34 on a bracket 33 fixed to the rear reinforcing member 12 provided within the side surface of the seat frame 11. Further, a tip metal fitting 35 is provided at the tip of the retractable rod 31, that is, the telescopic end 31a, and the tip metal fitting 35 is connected to the intermediate portion of the interlocking link 18 by a pin 36. Further, an operating knob 37 for switching the telescopic adjustment mechanism 30 between an unlocked state and a locked state is provided on the first operating lever 6.

That is, in FIGS. 4 to 6, the first operation lever 6 has a cover 6a that is connected to the operation rotation shaft 1.
The operating knob 37 is fixed to a mounting bracket 38 fixed to the cover 6a with a screw 39, and the middle part of the operating knob 37 made of synthetic resin is attached to a spring pin on a handle 6b provided integrally with the cover 6a. It is attached by 40. In addition, the above mounting bracket 38
A hook-shaped rotary plate 41 is swingably attached to the rotary plate 41 via a flange 38a, and a horizontal portion 41a of the rotary plate 41 is connected to the operating knob 37.
It corresponds to the operating end 37a of the. Further, a flexible wire 42 is stretched between the mounting bracket 38 and a spring engaging member (not shown) in the telescopic adjustment mechanism 30, and the core 42
one end of a is locked to the spring engaging member,
The other end is locked to the rising portion 41b of the rotating plate 41. Note that 42b is an outer tube of the flexible wire 42.

The tension spring 43 is tensioned between the hook portion 20a of the connecting shaft 20 and the hole 28b of the front end corner reinforcing member 28 of the seat frame 11, and the biasing force of this tension spring allows the first operation in the seated state to be performed. The lever 6 is configured to be easily pulled up. Furthermore, tension spring 2
6 is stretched between the hole 17c of the front link plate 17 and the hole 24c of the lock plate 24, and is biased to swing the lock plate 24 in the counterclockwise direction in the figure. Stop pin 2
5 is for locking onto one of the tooth profile portions 23a of the tooth plate 23.

Next, the operation will be described. A case will be described in which the seat frame 11 is moved upward from the lowest position.

In this state, the first operating lever 6 is laid down as shown in FIG. 2, and the telescopic adjustment mechanism 30 is locked.

Therefore, when a seated person holds the first operating lever 6 and the operating knob 37 at the same time with their left hand while sitting on the seat cushion (see Fig. 1), the operating knob 37 swings as shown by the imaginary line in Fig. 5. , the rotary plate 41 is swung by the operating end 37a from the position indicated by the solid line in FIG. 6 to the position indicated by the imaginary line in the same figure. As a result, the core 42a of the flexible wire 42 is pulled as shown by arrow A in FIG. 6, so that the diameter of the lock spring of the telescopic adjustment mechanism 30 is increased and the lock spring becomes unlocked.

Next, when the first operating lever 6 is pulled up while holding the operating knob 37, the operating rotation shaft 14 and the arm 15 are rotated clockwise in FIG. 2 accordingly. Therefore, the link mechanism 19 is displaced, and its front link plate 17 and rear link plate 16 are displaced from the lying position (see Figure 2) to the upright position (see Figure 3), and as a result, the front Front and rear reinforcing members 12 and 28 are provided at the raised and tilted ends of the link plate and the rear link plate, respectively.
The seat frame 11 connected via the seat frame 11 is pulled up. In this way, when the seat cushion 2 (see Fig. 1) reaches the desired height, stop pulling up the first operating lever 6 and loosen the clamped operating knob 37.
It is returned to the position shown by the solid line in the figure, and the telescopic adjustment mechanism 30 is locked. In this case, the return force of the operating knob 37 is obtained by the restoring force of the lock spring of the expansion/contraction adjustment mechanism 30 in the diameter reduction direction.

In this way, when the telescopic adjustment mechanism 30 is locked, the shape of the link mechanism 19 is maintained as it was when it was locked, so that the height of the seat cushion 2 or the seat frame 11 is maintained at that position.

Conversely, when moving the seat cushion 2 downward, the above procedure is reversed. That is, the telescopic adjustment mechanism 30 is unlocked by holding the operating knob 37 and the first operating lever 6 at the same time, and then the first operating lever 6 is pushed down until the seat cushion 2 reaches the desired height. The user loosens the grip on the operating knob 37 of the first operating lever 6 and releases his/her hand.

In addition, in order to move the front end of the seat frame 11 up and down, the lock plate 24 is rotated by pulling up the second operation lever 7, and the locking pin 25 is connected to the elongated hole 24b and the front link plate 17.
the open elongated hole 17a. Therefore, the locking pin 25 is disengaged from the tooth profile 23a of the tooth plate 23, and the lock is released.Then, when the seated person presses the seat back 3 of the seat 1 backward with his/her back, the front end of the seat cushion 2 or push it down by moving the seated person's center of gravity to make the other toothed part 23a correspond to the locking pin 25, and then return the second operating lever 7 to its original position by the tension of the spring 26. Return the locking pin 25 to the other toothed portion 23a. (Refer to Fig. 7) In the above embodiment, a telescopic adjustment mechanism is applied as the height adjustment device. be effective.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of the seat, FIGS. 2 and 3 are side views showing an embodiment of the invention, FIG. 4 is a plan view of the same, and FIG. 5 is a sectional view of the first operating lever.
FIG. 6 is a sectional view taken along the - line in FIG.
FIG. 7 is a side view showing the state of inclination adjustment, and FIG. 8 is an exploded perspective view of the inclination and height adjustment mechanism. 4... Base, 6... First operating lever, 11...
Seat frame, 14... Operation rotation axis, 15...
Arm, 18... Interlocking link, 19... Link mechanism, 30... Telescopic adjustment mechanism.

Claims (1)

[Scope of utility model registration request] In a seat equipped with a seat height and inclination adjustment mechanism, a link mechanism in which front and rear link plates rotatably supported by a cushion frame are connected by an interlocking link, and a link mechanism between the cushion frame and the interlocking link; The height adjustment mechanism formed by connecting a telescopic adjustment mechanism that can be locked at any position, the tooth plate formed with a plurality of tooth profiles, the link plate formed with an open elongated hole, and the lock plate formed with an elongated hole are the same. A lock pin rotatably supported on a central axis and supported by an elongated hole in the lock plate is inserted into an open elongated hole in the link plate and disposed so as to be able to engage and disengage from the toothed portion of the tooth plate. A seat height and inclination adjustment device characterized in that both inclination adjustment mechanisms are mounted within the cushion frame.