JP2001087335A - Massaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the change of a clearance between a pair of rubbing rollers at a high speed in the massaging machine wherein massaging action is performed by rocking a pair of rubbing rollers fitted to a rotating main shaft pipe and expanding and contracting the clearance and changing of the clearance can be performed by utilizing a motor for performing the rotation. SOLUTION: A main shaft pipe 15 is connected with the third planetary gear 33 being an output part of a three stage type planetary gear mechanism 13 performing speed reduction of a motor 11 and the third sun gear 25 is connected with an inner cylindrical member 37 and in addition, a screw rod 39 is loosely connected with the third sun gear 25 through a slip connecting mechanism 41 so as to perform slipping at a required torque. A feed nut 43 screwed into the outer periphery of the screw rod is hooked on the inner cylindrical member only in the rotating direction and is hooked on one pipe 15b among two pipes constituting the main shaft pipe and being slidable each other only in the shaft direction. In addition, a solenoid brake 51 for forcibly stopping the rotation is provided on another end of the screw rod 39.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a massage operation in which a pair of fir rollers, which are inclinedly attached to a rotating main shaft, oscillate due to rotation, and the distance between the rollers expands / contracts due to the oscillation. And a structure of a massage machine capable of automatically changing the interval.

[0002]

2. Description of the Related Art For example, the applicant filed a patent application in 1998
As No. 2013, as already filed, a massage machine capable of performing a massage operation by expanding and contracting a distance between a pair of fir rollers and automatically changing the distance is proposed.

That is, when the main shaft pipe is rotated, a pair of fir rollers inclinedly attached to the main shaft pipe swing while rotating. By this swinging, the massage operation is performed by expanding / contracting the distance between the fir rollers.

Further, in order to make the main shaft pipe expandable and contractable, two pipes, an inner pipe and an outer pipe, are overlapped in a coaxial state, and are locked only in the rotating direction. A threaded rod is provided coaxially inside the main shaft pipe. The screw rod rotates together with the main shaft pipe in a normal state, but when changing the distance between the fir rollers, the rotation is stopped by a brake. At this time, relative rotation occurs between the threaded rod and the feed nut screwed into the threaded rod. Therefore, the feed nut moves in the axial direction, and one of the pipes that is locked to the feed nut and forms the shaft pipe moves, so that the main shaft pipe expands and contracts. In this way, the distance between the fir rollers can be automatically changed by one motor that rotates the main shaft pipe.

[0005]

However, the rotation of the motor is transmitted to the main shaft pipe via a speed reducer, and the main shaft pipe is rotated by a strong force. For this reason, the rotation of the main shaft pipe is generally slow, and therefore, the rotation of the feed nut when changing the distance between the fir rollers is also slow. Therefore, the speed of the change in the interval performed by the relative rotation of the feed nut and the threaded rod also becomes slow.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems.
It is an object of the present invention to provide a massage machine capable of changing the distance between the fir rollers and changing the distance at a high speed.

[0007]

Means for Solving the Problems To solve the above problems, a first invention is to rotate a main shaft pipe,
A pair of fir rollers tilted and attached to the main shaft pipe swing, and this swing causes a massage operation by expanding and contracting the interval between these fir rollers,
The main shaft pipe is configured such that two pipes are stacked coaxially and locked only in the rotation direction in order to be able to expand and contract, and the screw rod provided coaxially inside the main shaft pipe is rotated, so that the The feed nut screwed to the male screw formed on the outer periphery of the rod moves, and one of the two pipes that locks to the feed nut moves to change the distance between the pair of fir rollers. In a massage machine that can be used, a motor for rotating the main shaft pipe, a reduction gear mechanism connected to the motor for deceleration, the main shaft pipe connected to an output gear of the reduction gear mechanism, and a reduction gear mechanism A rotation transmitting member connected to a gear closer to the motor than the output gear and arranged on the outer peripheral side of the threaded rod; The screw rod loosely connected to slip with the torque of the above, and the rotation transmission member is locked only in the rotation direction with the rotation transmission member and locked only in the axial direction with one of the two pipes constituting the main shaft pipe. A massage machine comprising a feed nut and a brake for forcibly stopping rotation of the threaded rod.

According to a second aspect of the present invention, the reduction gear mechanism is a three-stage planetary gear mechanism provided inside a main shaft pipe. A first sun gear connected to the output shaft, a first planetary gear revolving around the first sun gear, a first ring gear fixed around the first planetary gear, and a second sun gear connected to the first planetary gear A second planetary gear revolving around the second sun gear, a second ring gear fixed around the second planetary gear, a third sun gear connected to the second planetary gear, and a third sun gear. A revolving third planetary gear, and a third ring gear fixed around the third planetary gear; wherein the output gear is the third planetary gear of the three-stage planetary gear mechanism; Motor side of output gear of gear mechanism Gear, the third sun gear, a massage machine, which is a second sun gear or the first sun gear.

A third aspect of the present invention is the massage machine, wherein the rotation transmitting member is an inner cylindrical member coaxially arranged on an outer peripheral side of the threaded rod.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

As shown in the overall external view of FIG. 2, the entire housing 3 of the massage machine 1 has a substantially circular arc shape like a crescent moon. There is provided a mechanism for performing a massage operation covered by the cover 5 having flexibility. A left end portion of the substantially arc-shaped figure is a handle portion 7.
A power cord 9 is provided at the end of the power supply.

As shown in FIG. 1, which is a longitudinal section of FIG. 2, a three-stage planetary gear mechanism 13 is connected to a motor 11 to which power is supplied by a power cord 9 as a reduction mechanism.

That is, the motor 11 is coaxially arranged on the left end of the main shaft pipe 15 in the drawing. The three-stage planetary gear mechanism 13 connected to the motor 11 is disposed inside the left end of the main shaft pipe 15. In the three-stage planetary gear mechanism 13, three combinations of a sun gear, a planetary gear, and a ring gear are coaxially arranged.

That is, as shown in FIG. 3, in the three-stage planetary gear mechanism 13, the first planetary gear 21 revolves around the first sun gear 19 to which the output shaft 17 of the motor 11 is connected. First ring gear 23 around gear 21
Is fixedly provided. A second planetary gear 27 revolves around a second sun gear 25 connected to the first planetary gear 21, and a second ring gear 29 is fixedly provided around the second planetary gear 27. The third planetary gear 33 revolves around the third sun gear 31 connected to the second planetary gear 27, and the third ring gear 35 is fixedly provided around the third planetary gear 33.

The main shaft pipe 15 is connected to a third planetary gear 33, which is an output part of the three-stage planetary gear 13. The main shaft pipe 15 is
Two pipes, an inner pipe 15a and an outer pipe 15b
Are coaxially stacked, locked only in the rotational direction, and slidable in the axial direction. This locking is achieved, for example, by fitting a ridge formed on the outer peripheral surface of the inner pipe 15a in the axial direction into a concave ridge formed on the inner peripheral surface of the outer pipe 15b.

The three-stage planetary gear mechanism 13 is connected to the third sun gear 31 to form an inner cylindrical member 37 as a rotation transmitting member.
, The screw rod 39 is coaxially arranged.

That is, the inner cylindrical member 37 is
9 and on the inner peripheral side of the main shaft pipe 15. The third sun gear 31 and the screw rod 39 are connected by a slip connection mechanism 41. The slip connection mechanism 41 is a connection mechanism that generates a slip when a predetermined torque is generated and allows relative rotation.

Feed nut 43 screwed into screw rod 39
Penetrates the slit 45 of the inner cylinder member 37. This slit 45 is formed long in the axial direction. Thus, the feed nut 45 can move in the axial direction, but is locked in the rotation direction and cannot move.

The feed nut 43 is provided with a slit 4
The tip 47 penetrating through 5 locks with the outer pipe 15 b constituting the main shaft pipe 15. This locking is performed on a ring-shaped concave portion 49 provided on the inner peripheral side of the outer pipe 15b. Therefore, the feed nut 43 can move in the rotation direction with respect to the main shaft pipe 15, but is locked in the axial direction and cannot move.

The right end of the threaded rod 39 is connected to a solenoid brake 51. That is, the brake shoe 57 pressed by the solenoid 55 is disposed on the brake drum 53 integrally formed at the right end of the screw rod 39.

As shown in FIG. 1 or FIG. 3, an inner pipe 15a and an outer pipe 15b constituting the main shaft pipe 15 are provided with:
Fir rollers 65 and 67 are respectively attached. This attachment is performed at an angle, and furthermore, the attachment is performed in a state in which the fir rollers 65 and 67 are not restricted to the main shaft pipe 15 only in a substantially circumferential direction.

As shown in FIG. 4 or FIG. 5, this mounting mechanism is such that an outer circumferential retainer 71 is integrally provided on the outer circumference of a mounting sleeve 69 mounted on the inner pipe 15a or the outer pipe 15b. The inner circumference retainer 73 is provided on the inner circumference. Then, the outer peripheral retainer 71
A steel ball 75 is held between the inner circumference retainer 73 and the inner circumference retainer 73. The inclinations of the inclinations 65 and 67 of the fir roller are set so that the inclination angles are symmetrical with respect to a line perpendicular to the main shaft pipe 15 by the angle of the inner peripheral retainer 73 with respect to the mounting sleeve 69.

Each of the fir rollers 65 and 67 is attached to the main shaft pipe 15 at an eccentric position, so that the side on which the massage operation is performed, that is, the lower side in the figure is protruded. As shown in FIG. 1, a slide guide mechanism 77 is provided on the side where the massage operation is not performed, that is, on the upper side in the figure, to prevent the rotation of the fir rollers 65 and 67 and to prevent the fir rollers 65 and 67 from swinging. It is configured to allow the accompanying slide operation.

That is, the slide guide mechanism 77
Is formed by fitting a plate-shaped slide guide 81 into a slit-shaped guide groove 79 formed on the circumferential portion on the side where the massage operation of the fir rollers 65 and 67 is not performed. The slide guide 81 is fixed to the housing 3 and is arranged in parallel along the main shaft pipe 15.

(Operation) [Massage Operation by Swinging Only] When the motor 11 rotates, the rotation is reduced by the three-stage planetary gear mechanism 13 and transmitted to the main shaft pipe 15. When the main shaft pipe 15 rotates, the respective fir rollers 65 and 67 try to oscillate while rotating, but this rotation is prevented by the slide guide mechanism 77, so that the fir rollers 65 and 67 only oscillate.

That is, as the main shaft pipe 15 rotates, the apparent axial position of each outer circumferential retainer 71 of the main shaft pipe 15 changes right and left in the figure, and this change is made via the steel ball 75 and the inner circumferential retainer 73. It is transmitted to the fir rollers 65 and 67. Therefore, rocking is performed in which the interval between the fir rollers 65 and 67 on the side where the massage operation is performed (the lower side in the figure) expands and contracts left and right, and the massage operation is performed.

At this time, due to the rolling friction of the steel ball 75,
Although the fir rollers 65 and 67 also try to rotate while being pulled, the rotation of the fir rollers 65 and 67 is prevented by the slide guide 81 fitted in the guide groove 79 formed in the fir rollers 65 and 67. You. Then, the fir rollers 65 and 67 slide along the slide guide 81 in the axial direction of the main shaft pipe 15 with the swing. Thereby, the swing is allowed. Also, the slide guide 81
Has a sufficient length, and the expansion / contraction operation of the spindle pipe 15 described later is also allowed.

[Deceleration Operation] Reduction by the three-stage planetary gear mechanism 13 is performed as follows.

That is, when the first sun gear 19 connected to the output shaft 17 of the motor 11 rotates, the first planetary gear 2
1 revolves slowly, and the second sun gear 25 connected to the first planetary gear 21 rotates. When the second sun gear 25 rotates, the second planetary gear 27 revolves more slowly, and the third sun gear 31 connected to the second planetary gear 27 rotates. When the third sun gear 31 rotates, the third planetary gear 33
Revolves more slowly, and the main shaft pipe 15 connected to the third planetary gear 33 rotates. Thus, the speed is reduced, and the main shaft pipe 15 is rotated with a large torque.

[Operation of Changing Fir Width] In a normal state, the solenoid brake 51 is off.

When the motor 11 rotates, the main shaft pipe 15 connected to the third planetary gear 33 of the three-stage planetary gear mechanism 13 rotates together with the fir rollers 65 and 67. At this time, the inner cylindrical member 3 connected to the third sun gear 31
7, and the loosely connected screw rod 39 and feed nut 43 both rotate at a high speed. This is because the solenoid brake 51 is OFF, so that no torque greater than a predetermined value acts on the threaded rod 39 and no slip occurs. Therefore, there is no relative rotation between the feed nut 43 and the threaded bar 39, and the feed nut 43 does not move. For this reason, the feed nut 43 is provided in the ring-shaped concave portion 49 of the outer pipe 15 b constituting the main shaft pipe 15.
Rotate inside.

In the above condition, when changing the fir width,
The solenoid brake 51 is turned on. Then, the screw rod 39 stops rotating and slips between the third sun gear 31 and the third sun gear 31 by the slip connection mechanism 41. But,
The inner cylinder member 37 connected to the third sun gear 31 and the feed nut 43 locked to the inner cylinder member 37 in the rotation direction continue to rotate at a high speed. Therefore,
A fast relative rotation occurs between the feed nut 43 and the threaded rod 39. As a result, the feed nut 43 moves in the axial direction, the concave portion 49 is pressed in the axial direction by the feed nut 43, the outer pipe 15b slides against the inner pipe 15a, and the interval between the fir rollers 65 and 67 changes quickly. Is done.
Therefore, the width of the massage pad is changed.

(Other Embodiments) In the above embodiments, the reduction gear mechanism is a three-stage planetary gear mechanism. However, in other embodiments, another ordinary reduction gear mechanism may be used. .

In the above embodiment, the rotation transmitting member for transmitting the rotation to the feed nut 43 is the cylindrical inner cylindrical member 37. However, in other embodiments, the rotation transmitting member need not necessarily be cylindrical. Absent. For example, two rods provided with a feed nut interposed therebetween may be used.

In the above embodiment, the screw rod 39 is directly connected to the third sun gear 31 via the slip connection mechanism. However, in another embodiment, as shown in FIG. The screw rod 39 may be indirectly connected to the third sun gear 31 via the rotation transmitting member (the inner cylindrical member 37) via the slip connecting mechanism 41.

In the above embodiment, the screw rod 39 and the inner cylindrical member 37 are connected to the third sun gear 31. In other embodiments, the second sun gear 25 is connected to the third sun gear 31.
Alternatively, the first sun gear 19 can be used, and a faster change of the fir width can be performed.

In the above embodiment, the inner pipe 15a and the outer pipe 15b having different diameters are stacked coaxially in order to make the main shaft pipe 15 extendable and contractible. A plurality of slits formed in the circumferential direction may be provided in each of the two pipes having a diameter in the circumferential direction, and the pipes may be inserted into the slit portions to be expandable and contractable.

In the above-described embodiment, the slide guide mechanism 77 is the guide groove 79 formed in each of the fir rollers 65 and 67 and the slide guide 81 fitted in the guide groove 79. In the embodiment of
Other slide guide mechanisms can be provided. For example, a crescent disk-shaped guide protrusion provided on each of the fir rollers 65 and 67 is fitted into a slit-shaped guide recess provided on the housing side, and these guide protrusions and guide recesses are connected to the main shaft pipe. May be arranged in parallel along.

In the above embodiment, the attachment mechanism for attaching the fir rollers 65 and 67 has the steel ball 75. However, in other embodiments, another attachment mechanism is used. It is possible. For example, it is assumed that a ring-shaped concave or convex ridge provided on the outer periphery of the main shaft pipe 15 is fitted to a ring-shaped convex or concave ridge provided on the inner periphery of the fir rollers 65 and 67. It is possible that the material forming the ridge or the ridge has low sliding friction.

[0040]

As described above, according to claim 1,
According to the second or third aspect, the rotation transmitting member connected to the gear on the motor side of the output gear of the reduction gear mechanism rotates at a higher speed than the main shaft pipe connected to the output gear,
Therefore, the feed nut to which the rotation is transmitted by the rotation transmitting member also rotates quickly. Therefore, the movement of the feed nut is performed at a high speed, and the change of the distance between the fir rollers is also performed at a high speed.

According to the second aspect of the present invention, the massage machine can be made more compact by using a three-stage planetary gear mechanism as the reduction gear mechanism and providing the mechanism inside the main shaft pipe.

According to the third aspect of the present invention, further,
By making the rotation transmitting member an inner cylindrical member coaxially arranged on the outer peripheral side of the threaded rod, the rotation moment of the rotation transmitting member can be reduced, and the rotation can be stabilized.

[Brief description of the drawings]

FIG. 1 is an overall vertical sectional view of a massage machine according to an embodiment of the present invention.

FIG. 2 is an overall external view of FIG.

FIG. 3 is an enlarged view showing a main part of FIG. 2;

4A and 4B show a fir roller on the left side of FIG. 3, wherein FIG. 4A is a longitudinal sectional view and FIG. 4B is a front view of FIG.

5A and 5B show a fir roller on the right side of FIG. 3, wherein FIG. 5A is a longitudinal sectional view and FIG. 5B is a front view of FIG.

FIG. 6 shows another embodiment of the present invention, and is an enlarged view of a main part corresponding to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Massager 3 Housing 5 Cover 7 Handle part 9 Power cord 11 Motor 13 Three-stage planetary gear mechanism 15 Main shaft pipe 15a Inner pipe 15b Outer pipe 19 First sun gear 21 First planetary gear 23 First ring gear 25 Second sun gear 27 Second Second planetary gear 29 Second ring gear 31 Third sun gear 33 Third planetary gear 35 Third ring gear 37 Inner cylinder member 39 Screw rod 41 Slip connection mechanism 43 Feed nut 45 Slit 49 Depression 51 Solenoid brake 65, 67 Fir roller 69 Mounting sleeve 71 Outer peripheral retainer 73 Inner peripheral retainer 75 Steel ball 77 Slide guide mechanism 79 Guide groove 81 Slide guide

Claims (3)

[Claims] When the main shaft pipe is rotated, a pair of fir rollers tilted and attached to the main shaft pipe swing, and the swing expands and contracts a distance between the fir rollers, so that massage is performed. In order to make the main shaft pipe extend and contract, two main pipes are stacked coaxially and locked only in the rotational direction, and a screw rod provided coaxially inside the main shaft pipe is rotated. Then, a feed nut screwed into a male screw formed on the outer periphery of the threaded rod moves, and one of the two pipes that is locked to the feed nut moves, so that the pair of fir rollers can move together. A motor for rotating the main shaft pipe, a reduction gear mechanism connected to the motor for deceleration, and a reduction gear mechanism. A main shaft pipe connected to an output gear; a rotation transmitting member connected to a gear closer to a motor than the output gear of the reduction gear mechanism and arranged on an outer peripheral side of the screw rod;
The screw rod loosely connected to a gear on the motor side of the output gear of the reduction gear mechanism with a predetermined torque or more so as to slip, and the rotation transmission member is locked only in the rotational direction to form the main shaft pipe. A massage machine comprising: the feed nut that locks only one of the two pipes in the axial direction; and a brake that forcibly stops rotation of the threaded rod. 2. The reduction gear mechanism is a three-stage planetary gear mechanism provided inside a main shaft pipe. In order to constitute the three-stage planetary gear mechanism, a third stage planetary gear mechanism is connected to an output shaft of the motor. A sun gear, a first planetary gear revolving around the first sun gear, a first ring gear fixed around the first planetary gear, a second sun gear connected to the first planetary gear, and a second sun gear. A second planetary gear revolving around the periphery, a second ring gear fixed around the second planetary gear, a third sun gear connected to the second planetary gear, and a third planetary gear revolving around the third sun gear And a third ring gear fixed around the third planetary gear, wherein the output gear is the third planetary gear of the three-stage planetary gear mechanism, and the output gear of the reduction gear mechanism is The gear on the motor side is also the third support Gears, massage machine according to claim 1, characterized in that the second sun gear or the first sun gear. 3. The massage machine according to claim 1, wherein the rotation transmitting member is an inner cylindrical member coaxially arranged on an outer peripheral side of the threaded rod.