JP2566264B2 - Massage machine - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to an electric massage machine, in particular, to a rotatably driven rotary shaft in which the flywheel is eccentrically mounted, and the position of the flywheel can be changed by moving the rotary shaft. It is about a massage machine.

[Prior art]

As this type of massage machine, for example, JP-A-56-85
There is one disclosed in Japanese Patent No. 341. The output unit is a rotary shaft to which a pair of eccentric and slanted wheel wheels are attached, and a drive shaft for moving the rotary shaft in a direction along the treatment table which is a direction orthogonal to the axial direction. , The power of a single motor is distributed to both output parts by a clutch, and in this massage machine, the rotary shaft is driven to rotate, so that the massage wheel by the massage wheel rotates the drive shaft. By driving it, the fir wheel can be moved in the direction along the treatment table to change its position, that is, the treatment site can be changed by the fir wheel. In addition, since the rubbing ring rubs the body when moving, the rubbing massage can be performed using this point. By the way, since the kneading wheel is attached to the rotating shaft in the eccentric state as described above, when performing the above-mentioned rubbing massage, when the protruding amount of the kneading wheel to the body side is small, a sufficient rubbing massage is performed. If the protrusion amount is too large when the operation is completely stopped and the operation is completely stopped, when the body is placed on the treatment table, the fir wheel hits the body.

[Problems to be Solved by the Invention]

Here, by detecting the rotational position of the rotating shaft that is attached in an eccentric state, the massager detects whether the protrusion amount of the flywheel toward the body side is large or small, and the rubbing massage is performed. It suffices to stop the rotation of the rotary shaft in accordance with the operation selection of whether to perform or stop and the detection output, and for this reason, even in the one disclosed in the above publication, the protrusion amount becomes large. Two sensors are provided: a sensor for detecting the time when the amount of protrusion and a sensor for detecting the time when the amount of protrusion becomes small. However, the fact that two sensors are required to detect the protrusion amount of the chamfer to the body side not only increases the number of parts, but also increases the work in terms of sensor assembly and wiring. The present invention has been made in view of such a point, and the purpose thereof is that only one sensor is required for detecting the size of the protrusion amount of the chamfer to the body side, and the number of parts and It is to provide a massage machine which is advantageous in terms of assembly.

[Means for Solving the Problems]

Thus, the present invention provides a massage machine in which a pair of fir wheels, which are tilted in opposite directions to each other and are eccentrically mounted in the same direction with respect to a rotationally driven rotary shaft, are movable along a treatment table. A sensor for detecting the rotational position of the rotary shaft when the amount of protrusion to the body side is maximum or minimum, an operation instruction circuit for instructing movement and operation stop of the chaff wheel, and the above-mentioned two signals from the operation instruction circuit. The rotation of the rotary shaft in response to the instruction of the species and the output of the sensor is monitored to increase the amount of protrusion of the fir tree toward the body side, and then the fir wheel is moved and the amount of protrusion of the fir wheel toward the body side is determined. A control circuit for stopping the operation after reducing the size is provided, and for either one of the instructions for the movement of the wheel wheel and the operation stop from the operation instruction circuit, the movement is started or stopped from the output of the sensor. A delay circuit for delaying the time before moving to is characterized in that the control circuit is provided. [Operation] According to the present invention, whether the output amount of the sensor is passed through the delay circuit unit or not is used, it is possible to determine whether the protrusion amount of the flywheel has increased or decreased even with only a single sensor.

【Example】

Hereinafter, the present invention will be described in detail based on the illustrated embodiment, the illustrated massage machine is attached to a treatment table or the like such as a backrest of a chair or a bed, and a rotary shaft to which a pair of fir wheels 2, 2 are attached. A rotary massage of 1 is performed, and a massage is performed, and a pinion 12 provided at both ends of a drive shaft inserted into a hollow rotary shaft 1 is driven to rotate, thereby self-propelling along the treatment table. Here, the rotation of the rotary shaft 1 and the rotation of the pinion 12 are performed by a clutch composed of the planetary gear 4 arranged in the gear box 9 and two sets of electromagnetic brakes B ₁ and B _2. The output of one motor 3 is distributed to selectively perform the output. That is, the motor 3 is connected to the belt 30 at the input part of the planetary gear 4.
, One of the two output parts of the planetary gear 4 is connected to the rotary shaft 1 via the belt 31 and the worm shaft 13, and the other output part is connected to the pinion 12. It is directly connected to the worm shaft 14 that is used.
When outputting to the pinion 12 side, the motor 3 is rotated and the rotation of the worm shaft 13 is controlled by the electromagnetic brake B _1. Conversely, when outputting to the rotating shaft 1, the motor 3 is rotated at the same time. Electromagnetic brake on worm shaft 14
It is controlled by B ₂ . The electromagnetic brakes B ₁ and B ₂ have the same structure, and as shown in FIGS. 2 to 4, the worm shaft 1
Brake boss 60 fixed to 3, 14, return spring 70 whose inner peripheral portion is fixed to brake boss 60, and each tip of a plurality of spring pieces 71 extending in the circumferential direction of return spring 70 are fixed to one surface. The brake shoe 80 and an electromagnet block 50 facing the other surface of the brake shoe 80 with a small gap therebetween. The brake boss 60 is fixed to the worm shafts 13 and 14 by press-fitting the worm shafts 13 and 14 into the tubular portion 61 of the brake boss 60, and a plurality of pins 62 protruding from one surface of the brake boss 60 are returned. The return spring 70 is fixed to the brake boss 60 by being caulked and fixed to the hole 72 formed in the inner peripheral portion of the spring 70. The return spring 70 is also fixed to the brake shoe 80 by caulking and fixing a plurality of pins 83 projecting from one surface of the brake shoe 80 into holes 73 at the tip of each spring piece 71 of the return spring 70. . The pulley 32 for receiving the belt 31 on the worm shaft 13 is a brake boss.
It is stuck to 60. Here, on one surface of the brake shoe 80, a plurality of projections 82 are provided concentrically on the inner peripheral side of the pin 83 at equal intervals, and these projections 82 are provided on the return spring 70. The sheet 65 made of polyester-based synthetic resin disposed on one surface of the brake boss 60 is directly contacted through a gap portion between the inner peripheral portion of the above and the spring piece 71. Therefore, the brake shoe 80 is not affected by deformation such as warp of the return spring 70, and the surface accuracy in the direction orthogonal to the axial direction of the worm shafts 13 and 14 is maintained.
There is almost no run-out. Further, due to the presence of the sheet 65, the protrusion 82 directly contacts the brake boss 60, so that no metallic noise is generated. On the other hand, the electromagnet block 50 includes a bottomed cylindrical yoke 54, a cylindrical core 51 fixed to the central portion of the yoke 54, and a core 51.
A coil 52 disposed and fixed via a coil frame 53 between the outer periphery of the yoke 54 and the inner periphery of the yoke 54.
Is disposed so as to face the other surface of the brake shoe 80 with a small gap. In the figure, reference numeral 56 is a fitting hole for positioning the electromagnet block 50 in the gear box 9, and 57 is a polyurethane rubber which is fitted in a groove 58 formed in the end surface of the yoke 54 and slightly protrudes from the end surface of the yoke 54. It is made of damper. Under normal circumstances, the brake shoe 80 is biased by the return spring 70 and faces the electromagnet block 50 with a small gap, and the brake shoe 80 is energized by returning the brake shoe 80 to the return spring 70.
If it is adsorbed against, the rotation of the worm shafts 13, 14, that is, the rotation shafts 1 to 12 is controlled and the rotation is forcibly stopped. The damper 57
Reduces the impact when the brake shoe 80 is adsorbed and prevents the generation of metallic noise. Now, a pair of fir wheels 2, which are attached to the rotary shaft 1,
The two are attached to the rotary shaft 1 in a state in which they are inclined in opposite directions and are eccentric by the same amount in the same direction. Therefore, as the rotary shaft 1 rotates, the two are attached to the treatment table. The amount of protrusion of the kneading wheels 2 and 2 to the side of the body holding the back and the interval between the parts of the two knitting wheels 2 and 2 in contact with the body are cyclically changed, and this operation causes a kneading massage to the body. Further, by rotation of the pinion 12 that meshes with a rack (not shown) provided on the treatment table, the wheel wheels 2, 2 move in a direction along the treatment table which is a direction orthogonal to the rotation axis 1, You can change the position of the massage, and the massage wheels 2 and 2 can massage your body. In addition, the above-mentioned massage using the rotation of the rotary shaft 1 due to the inclination of the massage wheels 2 and 2.
Depending on the direction of rotation, there are two types of "firing up" and "firing down". Here, as described above, when the baffle wheels 2 and 2 are moved, the protrusion amount of the baffle wheels 2 and 2 toward the body side is large, so that the user can easily recognize the position of the baffle wheels 2 and 2. , Also, a rubbing massage is performed with sufficient effect. On the contrary, when you want to stop the operation,
If the amount of protrusion of 2, 2 to the body side is not made small, when the body is put on the backrest of the chair, which is the treatment table provided with this massage machine, or the bed, the body wheels 2, 2 hit the body. For this purpose, a sensor S is provided for detecting the rotational position of the rotary shaft 1 to which the wheel wheels 2, 2 are attached. As shown in FIG. 1, this sensor S is formed by a reed switch that is sensitive to the permanent magnet 16 mounted on the magnet holder 15 fitted to the rotary shaft 1, and is mounted on the gear box 9. Here the maple wheel 2,
It is turned on at the rotational position of the rotary shaft 1 when the amount of protrusion of 2 to the body side is maximum. Next, the control circuit CC that controls the operation of the motor 3 and the electromagnetic brakes B ₁ and B ₂ based on the outputs of both the sensor S and the operation instruction circuit C provided in the operating device will be described. As shown in FIG. 5, the control circuit CC composed of a microcomputer is used for detecting the position of the sensor S for detecting the amount of protrusion and the position of the rice wheel 2, 2 in the direction along the treatment table. The vertical position sensor SS is connected, the operation instruction circuit C is connected, the motor 3 is connected via the motor drive circuit MD, and the electromagnetic brakes B ₁ and B ₂ are connected via the electromagnetic brake drive circuit BD. The instruction determination circuit V for determining the output of the operation instruction circuit C, the sensor determination circuit W for determining the outputs of the both sensors S, SS, the operation of the motor 3 and the electromagnetic brakes B ₁ , B _{2 and} the operation thereof. The motor 3 and the electromagnetic brake are provided with an operation setting circuit U for setting timings (a to e described later) and a timer circuit T for setting the operation timing, in response to an instruction given from the operation instruction circuit C. B _1, B ₂ To operate in the following manner. That is, the control circuit CC causes the motor 3 to rotate in a required direction and operates the electromagnetic brake B ₂ in response to the instruction to raise or lower the rotation given from the operation instruction circuit C, so that the rotation of the motor 3 is rotated. 1, the rotation of the motor 3 in the required direction and the electromagnetic brake in response to an instruction to move up or down (including rubbing massage).
The operation of B ₁ is performed, and the rotation of the motor 3 causes the pinion 12 to rotate.
However, if the operation instruction circuit C gives an instruction to move up or down while rotating the rotary shaft 1 to perform the operation of raising or lowering, the time shown in FIG. As shown in the chart and the flowchart of FIG. 7 (b), the rotation of the rotary shaft 1 is continued until the output from the sensor S, that is, the rotation position where the protrusion amount of the rice wheel 2, 2 toward the body side is maximized is reached. Then, when the sensor S is turned on, the rotation of the motor 3 is temporarily stopped, and after the required time e has elapsed, the electromagnetic brake B ₂ that has been operated until then is turned off, and the required time b is further increased. When the time has elapsed, the electromagnetic brake B ₁ , which has been off until then, is turned on, the motor 3 and the pinion 12 are connected, and thereafter the motor 3 is rotated in the required direction. Similarly, when raising or lowering the wheel wheels 2,2,
When the operation instruction circuit C gives an instruction to raise or lower the tip, as shown in the time chart of FIG. 6 and the flowchart of FIG. After e, the electromagnetic brake B ₁ that has been operating until then is turned off to disconnect the motor 3 from the pinion 12, and when the required time b has passed, the electromagnetic brake B ₂ that was off until then is turned on to turn on the motor. 3 and the rotary shaft 1 are connected, and then the motor 3 is rotated in the required direction. The timing for restarting the motor 3 is
It is assumed that the required time a has elapsed from the time when the motor 3 was once stopped, and a> e + b. The timing of the on-off of the motor 3 on-off and the electromagnetic brake B _1, B ₂ are shifted from each other as described above, with less inertia rotation of the motor 3 at the time of turning on and off the electromagnetic brake B _1, B ₂ This is to prevent the clutch from slipping at the time of switching and reduce the occurrence of slipping noise. Operation instruction circuit C during the operation of raising or lowering the side
When a stop instruction is input from, the rotation of the motor 3 is continued until the required time d required for the rotating shaft 1 to make a half rotation after the sensor S is turned on, and the required time d elapses. At that time, that is, at the time when the protrusion amount of the wheel wheels 2, 2 which is eccentric by the half rotation of the rotary shaft 1 toward the body side becomes the minimum, the rotation of the motor 3 is stopped, and the time e required from the stop of the motor 3 is When the elapsed time elapses, the electromagnetic brake B ₂ that has been operating until then is turned off, and when the required time b elapses, the electromagnetic brake B ₁ is turned on for a period of time indicated by c in the figure, so that the motor 3 and By forming the state in which the pinion 12 is connected, even if the rotating shaft 1 rotates due to the inertial rotation of the motor 3, it is possible to prevent the protrusion amount of the flywheels 2, 2 from deviating from the minimum state. After that, the operation is stopped. The required time a is 200ms ± 50ms, b is 20ms ± 10m.
s and c are 500ms ± 50ms, d is 1250ms ± 250ms, and e is 100ms ±
It is about 10 ms, and the time required for these is based on the expectation of the on timing of the sensor S.
The deviation of the protrusion amount of is very small. Although the sensor S can detect only the maximum state of the protrusion amount, the time required for the half rotation of the rotary shaft 1 is always substantially constant. Therefore, by delaying the stop of the motor 3 by the time d, the flywheel is stopped when the operation is stopped. The amount of protrusion of 2 and 2 is set to the minimum. Further, in this embodiment, when a stop instruction is input during the side-up operation, when the sensor S is turned on, the operation is temporarily changed to the side-down operation and the rotation direction of the motor 3 is reversed. In this state, the motor 3 is stopped after waiting the above required time d. This is because the sensor S is a permanent magnet.
It is sensitive to 16 and its on-time is only 2
Has a certain range centered on the maximum state of the protrusion amount, and therefore the protrusion amount of the wheel wheels 2, 2 at the time when the required time d elapses from the time when the sensor S is turned on is
This is because it depends on the rotation direction of the. Depending on the rotation direction of the rotary shaft 1, the required time d +
If α and d−α ₂ are set, it is possible to stop without going through the state of sideburns. When the stop instruction is input from the operation instruction circuit C during the ascending or lower end operation, the protrusion amount of the wheel wheels 2, 2 is already in the maximum state, so the operation shifts to the down motion and the rotation is performed. The shaft 1 is rotated about half a turn, and thereafter, as in the above case, after the electromagnetic brake B ₂ is turned off and the electromagnetic brake B ₁ is turned on for a while, the operation is stopped. In the above embodiment, the sensor S is used to detect the rotational position of the rotary shaft 1 at the time when the protrusion amount of the wheel wheels 2 and 2 becomes maximum, and the minimum protrusion amount is delayed by the required time from the maximum point. However, it goes without saying that the sensor S may detect the minimum amount of protrusion and obtain the maximum amount of protrusion by delay.

【The invention's effect】

As described above, according to the present invention, whether the output of the sensor is passed through the delay circuit section or not is used to determine whether the protrusion amount of the ring wheel is increased or decreased even with only a single sensor. Since only one sensor is required, it is advantageous in terms of the number of parts and assembly.

[Brief description of drawings]

FIG. 1 is a cutaway rear view of an embodiment of the present invention, FIG. 2 is a sectional view of the electromagnetic brake of the above, FIG. 3 is an exploded perspective view of the electromagnetic brake of the same, and FIGS. 4 (a) and 4 (b) are the same. FIG. 5 is a block circuit diagram of the above, FIG. 5 (a) and FIG. 6 (b) are time charts of the same, and FIGS. 7 (a), (b) and (c) are It is a flowchart same as the above, 1 is a rotating shaft, 2 is a chamfer, S is a sensor, C
Is an operation instruction circuit, CC is a control circuit, and T is a timer circuit.

Claims (1)

(57) [Claims] 1. A massage machine in which a pair of fir wheels, which are tilted in opposite directions to each other and are eccentrically mounted in the same direction on a rotationally driven rotary shaft, are movable along a treatment table. A sensor that detects the rotational position of the rotary shaft when the amount of protrusion to the side becomes maximum or minimum,
The operation instruction circuit for instructing the movement and stop of operation of the chaff wheel, and rotating the rotary shaft in response to the two types of instructions from the operation instruction circuit and monitoring the output of the sensor to detect the body of the chaff wheel. And a control circuit for moving the flywheel after increasing the protrusion amount to the side and for stopping the operation after reducing the protrusion amount of the flywheel toward the body side, and for moving and stopping the flywheel from the operation instruction circuit. The massage machine, wherein the control circuit includes a delay circuit unit that delays the time from the output of the sensor to the start of movement or the stop of operation for either one of the instructions.