JPH11266964A - Seating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new seating device capable of reducing a direct load to lumbar vertebrae and to muscles supporting the lumbar vertebrae by pulling up and pushing up the upper half of a body with respect to its lower half. SOLUTION: A seating device capable of reducing a load applied to the lumbar part of a seated crew member is provided with vertical guide members 11a (11b) extended in the vertical direction within a seat back 2b, a vertical slider 10 to slide along the guide member, a horizontal guide member 6 extended in the right/left direction at the vertical slider, a pair of horizontal sliders (3, 4) to slide in mutually opposite directions along the horizontal guide member and supporting members 5a (5b) provided with abutting faces respectively provided for a pair of the horizontal sliders to be abutted from the obliquely lower side of the rear outside with respect to the lumber part region of the crew member. Thus, the lumbar part of the crew member is pushed up by a prescribed height by the supporting member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat device, and more particularly to a seat device for a vehicle or the like, and more particularly, to reduce the load on the lumbar spine and muscles supporting the lumbar spine by pushing up or pulling up both sides in the direction of the spine. The present invention relates to a seat device.

[0002]

2. Description of the Related Art In general, discomfort when a seat apparatus is seated, fatigue for a long time, etc., vary in size depending on the form and performance of the seat, and its main static characteristics are as follows. The posture where you are doing is uncomfortable and easily fatigued, the posture where the spine is supported straight is comfortable, the posture with the least muscle activity of the back muscles is comfortable and less fatigued, (b) the seat and the human body According to the pressure distribution (pressure distribution) measured by inserting a thin pressure pickup in the middle, in a comfortable seat, a concentrated load is applied to the cushion around the ischial tubercle, and a concentrated load is applied to the backrest near the third lumbar vertebra of the human body. (C) It is known that in an uncomfortable seat, the pressure on the thighs, both ends of the buttocks, the shoulders, etc. increases.

[0003] Therefore, in order to achieve a posture with less fatigue, a support device (lumbar support) for pushing the lumbar spine from the back side to the abdomen side into the seat back (for example, Japanese Patent Application Laid-Open No. 7-26516).
No. 9) is desirably provided so that the spine is supported straight and the surface of the seat cushion firmly receives the ischial tubercle of the occupant.

[0004]

However, since the above-mentioned support device or side support device is not provided with a function to support the load on the upper body, if the seating is continued for a long time, the muscles supporting the lumbar spine become fatigued and the lumbar spine becomes lumbar. The burden on the user increases, which may cause back pain. Therefore, there is a demand for a seat apparatus capable of raising and lowering the upper body relative to the lower body to reduce the direct load on the muscles supporting the lumbar vertebra and the lumbar vertebra, thereby alleviating and alleviating the lower back pain.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to raise or push up the upper body with respect to the lower body, and to reduce the direct load on the muscles supporting the lumbar spine and the lumbar spine. To provide a comfortable seating device.

[0006]

In order to achieve the above object,
The invention according to claim 1 is proposed. According to the present invention, a vertical guide member is provided in a seat back and extends vertically, and a vertical slider is slidably provided along the guide member. In addition, a horizontal guide member extends in the left-right direction on the vertical slider, and a pair of horizontal sliders is slidably provided in opposite directions along the horizontal guide member. Therefore, since the pair of horizontal sliders can slide up, down, left, and right, it is possible to adjust the sandwiching interval of the pressing position of the waist and the up and down position according to the physique of the occupant.

[0007] Since each of the pair of lateral sliders is provided with a support member having an abutment surface that abuts against the occupant's waist from obliquely downward and rearward, the occupant's waist is pressed to a predetermined height. Can push up. Therefore, both sides of the occupant sitting on the seat back are sandwiched by the pair of left and right support means via the left and right side supports. Since the lumbar vertebra is supported while maintaining the sandwiching state, muscle fatigue is reduced.

In addition, the present invention relates to the muscle and the lumbar vertebra supporting the lumbar vertebra by pushing up or pulling up the support member by the vertical slider to a position where the load acting on the lumbar spine is reduced, that is, both sides are extended to a position where the spine is extended. Reduce the load. If low back pain occurs, push up or pull up to a position where the burden on the cartilage between the lumbar vertebrae is reduced, and similarly reduce the fatigue of the muscles supporting the lumbar vertebrae and reduce the load on the lumbar vertebrae I do. Therefore, it is possible to drive for a long time without low back pain with less feeling of fatigue, and it is possible to enhance comfort and concentration during driving.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a side view showing an embodiment of the present invention suitable for using a seat device according to the present invention as a seat device of a vehicle. FIG. 2 is a sectional view taken along the line AA of FIG. FIG. 3 is a partial perspective view showing a main part of a mechanism part in a seat back.

As shown in FIG. 1, the seat device 1 comprises a seat 2a and a seat back 2b. The seat 2a and the seat back 2b are respectively mounted on a seat frame by a seat spring (not shown), a cotton felt, and a hair lock. The seat occupant sits on the seat 2a by swelling the seat back 2b on both left and right sides of the seat back 2b. Side supports 2c, 2c (FIG. 2) for supporting the lateral load of the first embodiment are formed.

The seat 2a is mounted on a vehicle floor (not shown) via a seat adjuster device to adjust the position in the front-rear direction, and the seat back 2b is attached to the seat 2a.
In order to adjust the angle with the seat frame, it is attached to a seat frame (not shown) via a reclining mechanism (not shown).

Now, in the seat 1 having the well-known structure described above, in order to reduce the direct load on the muscles supporting the lumbar vertebra and the lumbar vertebra by pushing up both sides B of the occupant, and to reduce and generate back pain, A support member 5 is provided in the pair of side supports 2c, 2c so as to sandwich both sides B via the side supports 2c, 2c.

The support member 5 basically includes a right support member 5a and a left support member 5b. Both sides of the occupant leaning on the seat back 2b with respect to the seat back frame 14 from above the seat 2a. The wedges are received and supported at a predetermined height, and as a result, the side supports 2c, 2c are placed so as to reduce the burden on the lumbar spine of the occupant by pushing up or pulling up the sides relatively to the lower body. Will be arranged. However, although such a configuration has the advantage of being inexpensive, since the physique, physique, taste, and condition are individually different, it is difficult to cope with all of them with only such a configuration.

Therefore, in this embodiment, a right screw 6a is formed on the right side of the first rod (lateral guide member) 6 as a guide member, and a left screw 6b is formed on the left side.
a base piece 3 on which a right support member 5a is attached to
The base piece 4 in which the left support member 5b is attached to the left screw 6b is screwed into the right screw 6a and the left screw 6b, respectively, and these right and left support members 5a and 5b are rotated by the first rod 6. , And the driven gear 8 for driving the rotation of the rod is fixed between the right-hand thread 6a and the left-hand thread 6b of the first rod 6. Of course, in this case as well, the right support member 5a and the left support member 5b have their holding surfaces 5c,
The holding surfaces 5c and 5d are screwed so that the upper surfaces of the holding surfaces 5c and 5d are open and the lower ends are closed with respect to the upper ends in the left-right direction.

The left and right ends of the first rod 6 are rotatably held by U-shaped fitting holding portions 10a and 10b of a support (vertical slider) 10 described later. Further, a motor 17 having a drive gear 18 that meshes with the driven gear 8 and rotates the first rod 6 fixed to a rotating shaft is disposed inside the support 10. A rod-shaped detent pin 13a is implanted inside the right fitting holding part 10a, and a rod-shaped detent pin 13b is implanted inside the left fitting holding part 10b. The rotation stop pin 13
a and 13b are slidably fitted to the base piece 3 and the base piece 4, respectively. Therefore, when the rotation of the left and right support members 5a and 5b is restricted by this rotation stop and the first rod 6 is rotated, the left and right support members 5a and 5b move closer to and away from each other, resulting in a difference in lateral physique and body shape. Can be dealt with.

However, even with this configuration, it is not possible to cope with the difference in sitting height and the adjustment of the degree of pushing up both sides. For this reason, the first rod 6 is placed on both sides B in the seat back 2a.
Of the left and right support members 5a,
A moving means 9 for moving the 5b in the vertical direction is provided.

The moving means 9 comprises fitting holding portions 10a, 10 for rotatably fitting and holding both ends of the first rod 6.
a pair of left and right second rods (longitudinal guide members) 11a and 11b which are respectively screwed into the first rod 6 in a direction orthogonal to the axial direction of the first rod 6;
a, a drive gear 2 fixed to the rotating shafts of motors 16B, 16A attached to the left and right frames 14b, 14a of the seat back frame 14 to transmit the rotational driving force to the seat back frame 14.
The driven gears 15B and 15A mesh with 0 and 19, respectively.

Thus, by rotating the motors 16A and 16B, the second rods 11a and 11b rotate, and the support 10 can be moved up and down to move the left and right support members 5a and 5b up and down. Therefore, for the first time with this configuration, the distance between the left and right support members 5a and 5b and the support members
The heights of a and 5b can be adjusted.

Although two motors for driving the second rods 11a and 11b are used, the seat back frame 14
The motor may be connected to the driven gears 15A and 15B by using one motor in the motors a and 14b. In addition, the first rod 6 and the second rods 11a and 11b are driven by a motor. However, the present invention is not limited to this, and these rods are gear-connected by a mechanical handle arranged beside the seat. Of course, it may be driven.

Next, in order to attach the support member 5 and the moving means 9 to the seat apparatus 1, first, the first rod 6 is rotated to connect the left and right support members 5a and 5b to the right side support 2c and the left side support 2c, respectively. 2c. After that, both ends of the second rods 11a, 11b are rotatably supported by upper and lower support portions 14c, 14d of the seat back frame 14, respectively, and the driven gears 8, 15A, 15B are respectively supported. The drive gears 18, 19, and 20 are engaged with each other to rotate in the forward and reverse directions, respectively.
Forward / reverse motor for driving (hereinafter referred to as first driving motor) 1
7 and a forward / reverse motor (hereinafter referred to as a second drive motor) 16A, 16B for driving the second rod. The first and second drive motors are connected to a switching circuit for supplying drive power by switching between forward rotation, reverse rotation, and stop (neutral).

With such a configuration, the left and right side supports 2c,
Both sides B of the occupant leaning on the seat back 2b via the 2c
First, the first drive motor 17 may be rotated in the direction in which the right and left support members 5a, 5b are sandwiched, and the first drive motor 17 may be opened up to the initial position by reverse rotation. In order to match the occupant's physique, the second drive motor 16 is required.
A and 16B may be rotated forward or backward in synchronization.

When the load on the muscles supporting the lumbar spine is reduced by holding the occupant seated on the seat 2a with both sides B sandwiched therebetween, the second drive motor is operated by the occupant after the seat is operated. Rotate 16A, 16B,
The heights of the right and left support members 5a and 5b are adjusted, and then the first drive motor 17 is operated to switch the left and right support members close to each other. As a result, the left and right support members 5a and 5b press the upper surfaces (skins) of the side supports 2c and 2c to clamp both sides B with the entire support.

When a predetermined pressing feeling is obtained, the first driving motor 17 is temporarily stopped, and then the second driving motors 16A and 16B are stopped.
Switch to push up both sides B until the appropriate push-up sensation is obtained, and if there is a backache, rotate the second drive motors 16A, 16B forward or reverse until the pain is alleviated. Such adjustment reduces the fatigue of the muscles supporting the lumbar spine and releases the lumbar spine from direct load bearing.

Therefore, both sides B can be pushed up in accordance with the state of the occupant without being influenced by the physique and the physique of the occupant, and the fatigue of the muscles supporting the lumbar spine and the load on the lumbar spine are reduced. Is done. For this reason, it is possible to perform driving with less feeling of fatigue and without causing back pain, and it is possible to perform comfortable and highly concentrated driving.

Also, as described above, each side support 2
By disposing the right and left support members 5a and 5b in c and 2c, the frame conventionally provided for supporting the lateral load can be eliminated, and the configuration can be made relatively inexpensively.
Note that the holding means and the moving means according to the present embodiment have a function of extending the spine straight, so that the conventional lumbar support is unnecessary. It is also possible to mount the device.

[0027]

As apparent from the above description, according to the present invention, it is possible to adjust the degree of pushing up or pulling up on both sides according to the difference in body shape and physique and the condition of each person, and the lumbar spine can be adjusted. The fatigue of the supporting muscles and the load on the lumbar spine can be reduced. In addition, it is possible to reduce the fatigue of the muscles supporting the lumbar spine and the load on the lumbar spine with an inexpensive configuration. Demonstrate excellent effects such as.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention suitable for using a seat device according to the present invention as a seat device of a vehicle.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a partial perspective view showing a main part of a mechanism in a seat back.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat apparatus 2 Seat 2b Seat back 3, 4 Horizontal slider (base piece) 5 Support member (5a, 5b) 6 Horizontal guide member (first rod) 10 Vertical slider (support) 11 Vertical guide member (second rod) B Both sides

Claims (1)

[Claims] 1. A seat device for reducing the load applied to a waist by pressing the waist of an occupant sitting on a seat, comprising: a vertical guide member extending vertically in a seat back; and a sliding member along the guide member. A moving vertical slider, a horizontal guide member extending in the left-right direction on the vertical slider, a pair of horizontal sliders sliding in opposite directions along the horizontal guide member, and a pair of horizontal sliders, respectively. A seating member provided with a contact surface that comes into contact with the occupant's waist from obliquely downward and rearward outside, wherein the supporting member presses the occupant's lumbar portion and pushes up the occupant's waist by a predetermined height.