JP2000093478A - Motor driven massage machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the compatibility of the ease of reclining angle adjustment with a higher speed of a motor driven massage machine of a motor driven reclining system. SOLUTION: This motor driven machine is provided with a motor control circuit 15 which changes over the output voltage of a motor drive circuit 16 of the motor driven machine by a time. The motor control circuit 15 outputs a low speed drive signal to the motor drive circuit 16 when an up switch 13 or a down switch 14 is pushed. The signal is changed over to a high speed drive signal after lapse of the set time. A back rest starts luffing at a low speed and the luffing changes over to a high speed after the specified time. The time when the angle of the back rest is considerably changed is shorted. When making fine adjustment of the angle, a user turns the switch 13 or the switch 14 on and off inch by inch and the back rest luffs at the low speed. The fine adjustment is thus easily carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric massage machine, and more particularly to an electric massage machine having an electric reclining mechanism.

[0002]

A chair-type electric massage machine provided with an electric reclining mechanism using a motor,
The angle of the backrest with respect to the seat surface is, for example, 110 degrees to 1 degree.
From a vertical position of about 20 degrees to a horizontal position of 17 degrees
The angle can be adjusted in a wide range from 0 degrees to 180 degrees, and the backrest can be adjusted to any angle by operating the reclining adjustment switch provided on the operation panel of the armrest part or the remote controller can do.

[0003] Usually, when using an electric massage machine, massage is performed by sitting down with the backrest upright and then tilting the backrest at a desired angle close to horizontal to perform the massage, and after the massage is completed, the backrest is raised. The usage pattern is to leave the machine, and the angle of the backrest is significantly changed at least twice at the start and end of use.

Therefore, it is more convenient for the backrest to move at a high speed, but the conventional electric reclining mechanism simply drives the motor forward or backward, and the rotational speed of the motor and the backrest speed are constant. And
If the backrest undulation speed is set to high speed, fine adjustment of the backrest angle becomes difficult, so it is set to a low speed that makes fine adjustment easy, and it takes time to significantly change the backrest angle. There is.

[0005] Therefore, there is a technical problem to be solved in order to improve the convenience by simultaneously achieving the easiness of fine adjustment of the backrest angle and the increase of the undulating speed. The purpose is to solve.

[0006]

SUMMARY OF THE INVENTION The present invention proposes the above-mentioned object, and in an electric massage machine having an electric reclining device using a motor as a power source, an on-signal input of a reclining adjustment switch is provided. A motor control unit is provided which starts the motor at a point in time and shifts the rotation speed of the motor toward a predetermined maximum speed with the continuation of the ON signal, and accelerates the backrest undulation speed from a low speed to a high speed. An electric massage machine is provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a chassis 1 in which an exterior material, a cushion material, an armrest, and the like are removed from a chair-shaped electric massage machine, and a seat plate 3 is attached to an upper part of a leg frame 2 of a steel pipe. Although the backrest 4 is not shown in the upper half, a bracket 6 is pivotally attached to the seat plate 3 via a hinge 5, and is provided on a lower surface of a front portion of the leg frame 2 and a bracket 7 fixed to the backrest 4. In addition, an electric reclining device 8 is interposed. Although not shown, the backrest 4 has a built-in massage roller driven by a motor, and the massage roller moves up and down the backrest 4 to perform massage such as scouring and tapping.

[0008] The structure of the electric reclining device 8 will be briefly described.
0 is connected, and the worm gear attached to the motor shaft meshes with the worm wheel built in the gear housing 9. The axis of the worm wheel is parallel to the front-back direction (left-right direction in FIG. 1) of the electric massage machine, and a long male screw is screwed into the female screw formed in the center hole, and the rear end of the male screw Is pivotally attached to the bracket 7 of the backrest 4. Further, an outer cylinder 11 made of a steel pipe connected to a front portion of the gear housing 9 is pivotally attached to the bracket 6 of the leg frame 2. Reference numeral 12 denotes a bellows-type rubber tube that covers a male screw.

FIG. 2 shows a reclining circuit, which includes an armrest of an electric massage machine and an ascending reclining switch 1 for adjusting a backrest angle provided on a remote controller.
3 and a reclining switch 14 (hereinafter referred to as an ascending switch 13 and a descending switch 14) are connected to a motor control unit 15, which controls a motor drive circuit 16 and a forward / reverse switching circuit 17.

Up switch 13 or down switch 14
Is operated, the DC motor 10 is started, and the worm wheel of the electric reclining device 8 is rotationally driven, and the male screw screwed into the female screw of the worm wheel is changed according to the rotation direction of the DC motor 10 and the worm wheel. Move forward or backward. When the down switch 15 is pressed, the male screw advances rightward in FIG. 1 and the backrest 4 falls backward with the pivot point on the seat plate 3 as a fulcrum, and the up switch 1
When 3 is pressed, the DC motor 10 rotates in the reverse direction, and the male screw retreats.
The backrest 4 stands up.

The motor control unit 15 includes a motor drive circuit 16
The function of switching the output voltage of the motor drive circuit 16 according to the input time of the operation signal, such as an IC for controlling the volume of an audio device, in a stepwise or stepless manner. The circuit may be any of a circuit having a gradually increasing hardware configuration or a configuration in which a digital signal by a microcomputer and a software program is converted and output by a D / A converter, and is not particularly limited.

FIG. 3 is a timing chart showing an example of the output voltage control of the motor drive circuit 16. When the up switch 13 or the down switch 14 is pressed, the motor control unit 15 controls the motor drive circuit 16 to output a low voltage. Signal V
1 and the timer unit 18 starts clock counting, and after a certain period of time, the low-voltage output control signal V1
Is switched to the high voltage output control signal V2. Therefore, the DC motor 10 starts at a low speed when the up switch 13 or the down switch 14 is pressed, and the DC motor 10 switches to the high speed rotation after a lapse of a set time of, for example, about 2 seconds.

The reset is performed by releasing the depression of the up switch 13 or the down switch 14 and turning off the switch. When the next switch is turned on, the reset is always started from the output of the low voltage output control signal V1. Thus, the backrest 4 starts at a low speed at the start of the ups and downs, and switches to a high speed after a lapse of the set time. Therefore, the up-and-down time when the angle of the backrest 4 is largely changed is reduced, and when the angle of the backrest 4 is finely adjusted, if the up switch 13 or the down switch 14 is turned on and off little by little, the backrest 4 is kept within a certain period of time. Since it rises and falls at a low speed, it does not overshoot a desired position, and fine adjustment can be easily performed.

FIG. 4 is a timing chart of a multi-speed transmission motor control according to another embodiment.
In this example, the rotation speed of the motor is shifted in four stages. When the up switch 13 or the down switch 14 is pressed, the motor control unit 15 outputs a voltage output control signal of Lo level V1 to the motor drive circuit 16. At the same time, the timer section 18 starts clock counting, and switches the voltage output control signal to a higher level by one step every time a predetermined time t elapses, and finally outputs a voltage output control signal of the highest level V4. Therefore, when the up switch 13 or the down switch 14 is depressed, the DC motor 10 starts at a low speed and gradually changes to a high speed, so that the undulating speed of the backrest accelerates to a predetermined maximum speed. Further, the speed change step may be further subdivided into a substantially stepless speed change control.

Although not shown in the drawings, as another embodiment, a variable resistance type pressure-sensitive switch using a conductive rubber having a property that a resistance value changes according to pressure as a contact is used as a reclining adjustment switch. Alternatively, the control circuit may be configured to control the switching of the drive voltage of the motor based on the resistance value when the switch is turned on. In this case, if the switch is pressed lightly, the backrest can be lowered and raised at a low speed, and if the switch is pressed strongly, the backrest can be raised and lowered at a high speed, so that the user of the electric massage machine can arbitrarily adjust the lifting and lowering speed.

The present invention is not limited to the above-described embodiment, and various modifications are possible within the technical scope of the present invention, and it goes without saying that the present invention extends to those modifications. is there.

[0017]

As described above, according to the present invention, when raising and lowering the backrest of the electric massage machine, the rising and lowering speed gradually increases after starting at a low speed, so that the time required for the angle adjustment is reduced and the fineness is reduced. This is an invention that is easy to operate because it rises and falls at a low speed during adjustment, and is effective in improving usability.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a chassis of an electric massage machine.

FIG. 2 is a block diagram of a reclining circuit.

FIG. 3 is a timing chart of reclining speed control.

FIG. 4 is a timing chart of reclining speed control according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chassis 3 Seat plate 4 Backrest 8 Electric reclining device

Claims (2)

[Claims] 1. An electric massage machine equipped with an electric reclining device using a motor as a power source, wherein the motor is started at the time of input of an on signal of a reclining adjustment switch, and the rotation speed of the motor is reduced with the continuation of the on signal. An electric massage machine, comprising: a motor control unit that shifts to a predetermined maximum speed, and configured to accelerate a backrest undulation speed from a low speed to a high speed. 2. The electric massager according to claim 1, wherein the motor control unit is configured to switch the backrest undulation speed from a low speed to a high speed from a point in time when the on signal of the reclining adjustment switch continues for a predetermined time. Machine.