JPH0889548A - Vibrating seat - Google Patents

Abstract

PURPOSE: To provide a vibrating seat in which sufficient vibrations can be applied to a sitting person without giving sense of incompatibility from a vibration unit. CONSTITUTION: A vibration unit 6 is fixed to a torsion bar 5 supported freely movably back and forth on a sheet back 1 so as to appear from/disappear in a sitting surface and can be arranged at a protruding position B and a recessed position A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibrating sheet, and more particularly to a vibrating sheet for imparting vibration to a seated person by the operation of a vibrating unit to give the seated person an awakening effect or a Matsusurge effect. is there.

[0002]

2. Description of the Related Art Conventionally, as this type of vibrating sheet, one disclosed in Japanese Patent Laid-Open No. 6-121818 has been known. This has a vibrating unit which is disposed in the seat back and generates a predetermined vibration, and a support spring which is fixed to the frame of the seat back and supports the vibrating unit, and the vibrating unit is against the seating surface of the seat back. It was placed in a fixed and fixed position.

[0003]

However, in the above-mentioned conventional apparatus, since the vibration unit is arranged at a predetermined position fixed to the seating surface of the seat back, the elasticity of the support spring is determined by the arrangement. Even if the above is taken into consideration, the vibration unit may give a seated person a feeling of foreign matter. Further, if the vibration unit is arranged so as not to give the seated person a feeling of foreign matter, it may be difficult to apply sufficient vibration to the seated person even if the vibration unit operates.

SUMMARY OF THE INVENTION Therefore, it is a technical object of the present invention to provide a vibrating sheet which allows a vibration unit to give a sufficient vibration to a seated person without giving the seated person a feeling of foreign matter.

[0005]

The technical means taken in the present invention to solve the above-mentioned technical problems are as follows: the seat back-and-forth direction is arranged in the seat back so that the frame of the seat back is projected and retracted with respect to the seating surface. And a vibrating unit fixed to the torch bar so that it can be arranged at least in the projecting position and the retracted position by the movement of the torch bar in the seat back, and generates a predetermined vibration at the projecting position. That is, it has.

More preferably, the lumbar support device comprises a drive mechanism that is linked to the torch bar to move the torch bar, and the lumbar support device is constituted by the torch bar and the drive mechanism. It is preferable to have control means for controlling the operation of the drive mechanism so that the vibration unit is at the protruding position and the immersive position and for adjusting the immersive position to a desired position.

[0007]

According to the above technical means, the vibrating unit is always arranged in the retracted position by the movement of the torsion bar.
Therefore, the vibration unit cannot give the seated person a feeling of foreign matter. Further, the vibrating unit is placed in the projecting position by the movement of the torsion bar and operates. Therefore, sufficient vibration can be applied to the seated person.

[0008]

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

As shown in FIG. 1, the seat back 1
Is composed of a rectangular frame 2, a cushion body 3 supported by the frame 2 and imparting elastic force to a seated person, and a skin 4 that covers the frame 2 and the cushion body 3 and serves as an exterior of the seat back 1.

As shown in FIGS. 2 and 3, a seat bar 1 is provided in the seat back 1. One end 51 of the torsion bar 5 is fixed to a sector gear 81, which will be described later, which is rotatably supported on the side portion 21 of the frame 2 in the seat back and forth direction, and the other end 52 is rotatably inserted into the side portion 22 of the frame 2. The rotation center line is a line connecting the rotation center of the sector gear 81 and the other end 52 and is rotatable. Further, the torsion bar 5 is integrally formed with a bent portion 53 in phase with the center line of rotation so as to be located substantially in the center of the seat surface of the seat back 1 (the lumbar portion of the seated person). ,
By the rotation of the torsion bar 5, the seat bar 1 can be moved in the longitudinal direction of the seat back to have an immersing position A where the seat back 1 immerses into the seating surface 1a and a protruding position B where the seat back 1 protrudes with respect to the seating surface 1a.

A vibration unit 6 is provided in the seat back 1.
Is fixed to the bent portion 51 of the torsion bar 5 by the bracket 7, that is, the movement of the bent portion 51 moves together with the bent portion 51 in the seat back-and-forth direction to cause the retracted position A.
And the projecting position B. The vibrating unit 6 includes a bent U-shaped leaf spring 61,
It is composed of an electromagnet 62 and a case 63 accommodating them, and the leaf spring 61 has a case 61 at one side portion 61a.
The electromagnet 62 is fixed to the other side portion 61b which is fixed to the other side and becomes a free end. The vibrating unit 6 configured in this way is
When the electromagnet 62 is energized, the other side portion 61b of the leaf spring 61 is attracted to the one side portion 61a, and when the electromagnet 62 is de-energized, the biasing force of the leaf spring 51 is applied. By the return of the other side portion 61b to the original state, that is, by passing a pulse current through the electromagnet 62, the leaf spring 61 vibrates at a frequency that matches the frequency, and at a predetermined frequency. Vibrate.

The side portion 21 of the frame 2 of the seat back 1
A drive unit 8 is supported by the bracket 9 via a bracket 9. The drive unit 8 is composed of a sector gear 81, a pinion gear 82, a reduction gear mechanism 83 and a motor 84. The sector gear 81 is rotatably supported on the rotation center line of the torsion bar 5 by a pin 85 on a bracket 9 fixed to the side portion 21 of the frame 2 of the seat back 1. The pinion gear 82 is a reduction gear mechanism 83.
The motor 84 is connected to the input gear of the reduction gear mechanism 83, and is supported by the bracket 9 via the reduction gear mechanism 83 supported by the bracket 9. The pinion gear 82 is meshed with the sector gear 81. In this configuration, when the motor 84 operates,
The sector gear 81 rotates via the reduction gear mechanism 83 and the pinion gear 82, and the rotation of the sector gear 81 is transmitted from the one end 51 of the torsion bar 5 to the torsion bar 5, and the torsion bar 5 rotates. As a result, the bent portion 53 of the torsion bar 5 moves in the seat back-and-forth direction so that the vibration unit 5 is at the retracted position A or the projected position B.
Be placed in.

As shown in FIG. 4, the electromagnet 62 of the vibration unit 6 is connected to the drive circuit 10 and the output interface 1.
1 is connected to the output port P1 of the CPU 12 and the motor 84 of the drive unit 8 is connected to the output port P2 of the CPU 12 via the drive circuit 13 and the output interface 11. A lumbar switch 15 is connected to the input port P3 of the CPU 12 via an input interface 14, and a sleep detection sensor 16 for detecting sleep of a seated person is connected to the input port P4. or,
A pulse signal indicating the operation of the motor 84 is input to the input port P5 of the CPU 12 via the input interface 14.

Next, the operation of the CPU 12 will be described with reference to FIG.

Normally, the bent portion 53 of the torsion bar 5 is
Is located at the retracted position A, and the vibration unit 6 is not pressed against the seated person. In this state, input port P4
When an awakening signal from the sleep detection sensor 16 is input to
It is judged that the seated person is in a sleeping state (step S1),
An operation signal for operating the motor 84 of the drive unit 8 is output from the output port P2 (step S2). As a result, the drive circuit 13 causes the motor 84 to operate in one direction, causing the torsion bar 5 to rotate. As a result, the bent portion 53 of the torsion bar 5 moves in the seat back front direction so as to be located at the protruding position B. After this, input port P5
If it is determined that the motor 84 has operated only by moving the vibration unit 6 from the retracted position A to the projected position B from the pulse signal input to the output port P (step S3).
A stop signal for stopping the motor 84 is output from 2 (step S4). As a result, the operation of the motor 84 in one direction is stopped, the vibration unit 6 is arranged at the protruding position B, and the vibration unit 6 is pressed against the seated person. continue,
An operation signal for operating the vibration unit 6 is output from the output port P1 (step S5). As a result, the vibrating unit 6 is actuated by the drive circuit 10 and vibrates based on the set vibration pattern. As a result, the vibration of the vibration unit 6 is applied to the seated person, and this vibration promotes the awakening of the seated person. Thereafter, when it is determined that the vibration of the vibration unit 6 has passed a predetermined time (step S6), a stop signal for stopping the vibration unit 6 is output from the output port P1 (step S7). As a result, the operation of the vibration unit 6 is stopped. Then, an operation signal for operating the motor 84 of the drive unit 8 is output from the output port P2 (step S8). As a result, the drive circuit 13 causes the motor 84
Operates in the other direction, and the torsion bar 5 rotates in the opposite direction to the above. As a result, the bent portion 53 of the torsion bar 5 moves in the rear direction of the seat back so that the bent portion 53 is located at the retracted position A. After that, if it is determined that the motor 84 is operated only by moving the vibration unit 6 from the protruding position B to the retracted position A from the pulse signal input to the input port P5 (step S9), the motor 84 is stopped from the output port P2. A stop signal is output (step S10). As a result, the operation of the motor 84 in the other direction is stopped, and the vibration unit 6 is placed at the retracted position A.

The movement of the vibration unit to the retracted position A and the protruding position B may be controlled by a timer instead of the position control by the pulse signal.

No wake-up signal is input to the input port P4,
When the lumbar switch 15 is operated and a motor actuation signal for actuating the motor 84 of the drive unit 8 in one direction or the other direction is input from the lumbar switch 15 to the input port P3 (step S11), the motor is actuated from the output port P2. An actuation signal is output (step S12)
The drive circuit 13 operates the motor 84 to rotate the torsion bar 5. As a result, the bent portion 53 of the torsion bar 5 moves forward or backward in the seat back. When the operation of the lumbar switch 15 is released, the operation signal output from the output port P2 ends (step S1).
3), the motor 54 stops. As a result, the retracted position A of the vibration unit 6 is adjusted, and the desired support of the lumbar spine of the seated person is performed by the torsion bar 5 (lumbar function).

The adjusted immersion position A is judged from the pulse signal input to the input port P5 and the CPU 12
The return to the immersion position A after the operation of the vibration unit 6 stored in the internal memory is the stored return to the immersion position A.

As described above, the vibration unit 6 is always placed in the retracted position A by the movement of the torsion bar 5. Therefore, the vibration unit 6 does not give a seated person a feeling of foreign matter. Further, the vibrating unit 6 is placed in the projecting position B by the movement of the torsion bar 5 and operates. Therefore, sufficient vibration is applied to the seated person. Further, the torsion bar 5 and the drive unit 8 constitute a lumbar support device 17. Therefore, a special member for supporting the vibration unit 6 is not required, the number of parts is reduced, and the cost is greatly reduced.

[0020]

According to the present invention, since the vibrating unit is fixed to the torch bar movably supported in the seat back-and-forth direction so as to project and retract with respect to the seating surface, the vibrating unit can be arranged at the projecting position and the retracting position. By arranging the vibrating unit at the retracted position or the protruding position, the vibrating unit can impart sufficient vibration to the seated person without giving the seated person a feeling of foreign matter.

Further, according to the present invention, since the lumbar support device is constituted by the torsion bar and the drive unit, the existing device incorporated in the seat back can be used as a support for the vibration unit to the frame, and the number of parts can be reduced. It is possible to reduce the cost and the number of assembling steps.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a vibration sheet according to the present invention.

FIG. 2 is a perspective view of a vibrating unit mounted on a frame.

FIG. 3 is a perspective view showing a main part of a vibrating sheet according to the present invention.

FIG. 4 is a control circuit diagram for operating the vibration sheet according to the present invention.

FIG. 5 is a flow chart showing the operation of the control circuit diagram.

[Explanation of symbols]

 1 Seat back 2 Frame 5 Torsion bar 6 Vibration unit 8 Drive unit 12 CPU (control means) 17 Lumbar support device A Immersion position B Projection position 1a Seating surface

Claims (3)

[Claims] 1. A torch bar disposed in the seat back and movably supported in the seat back and forth so that the frame of the seat back is retractable from the seating surface.
A vibrating sheet having a vibrating unit that is fixed to the torch bar and is arranged in the seat back so that it can be arranged at least in a projecting position and a retracted position by the movement of the torch bar and that generates a predetermined vibration at the projecting position. 2. The vibrating sheet according to claim 1, further comprising a drive unit which is linked to the torch bar and moves the torch bar, and the lumbar support device is constituted by the torch bar and the unit. 3. The control means for controlling the operation of the drive unit so that the vibrating unit is at the projecting position and the retracted position and adjusting the retracted position to a desired position. Excitation sheet.