JP2999871B2 - Handy massage machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handy massage machine.

[0002]

2. Description of the Related Art Conventionally, two treatment elements that perform different operations, for example, a massage operation such as tapping and vibration, are arranged in opposite directions, and each treatment element is independently operated by a single motor. As disclosed in Japanese Utility Model Application No. 3-58169 proposed earlier by the present applicant, there is a motor in which a one-way clutch is provided at both ends of a rotating shaft of a motor.

Further, in order to perform a strong tapping massage, as disclosed in Japanese Patent Application No. 3-180551 previously proposed by the present applicant, a rotation-linear motion converting member for converting the rotation of a motor into a linear motion is used. Some include a one-way clutch.

[0004]

However, in such a conventional handy massage machine, in order to operate two treatment elements independently and to perform a strong beating massage, the two treatment elements are independently operated. 2 to make it work
One one-way clutch and one one-way clutch for performing a strong tapping massage are required.

[0005] For this reason, three one-way clutches are required to perform tapping, vibration massage and strong tapping massage with one handy massage machine.
Inevitably, the cost and the assembly process are increased, and not only the noise of the one-way clutch part is increased, but also the friction is increased, so that the reliability of the one-way clutch part is deteriorated as it is used for a long time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a handy massage machine capable of reducing cost and assembling steps and improving reliability.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a motor, a rotary-linear motion converter provided on a rotary shaft of the motor for converting a rotary motion into a linear reciprocating motion, and connected to the rotary-linear motion converter. A linear motion axis, a spring wound around the linear motion axis and repeating compression and expansion by linear reciprocating motion of the linear motion axis, and a first treatment for hitting massage attached to a tip end of the linear motion axis Child and the rotation-
The linear motion converter is provided in the linear motion converter, and moves the linear motion axis while compressing the spring to a predetermined position only when the motor rotates in a predetermined direction. A first one-way clutch for performing a beating massage by the first treatment element by linearly reciprocating the motion axis, and a case in which the motor is attached to a rotation shaft of the motor and the motor rotates in a direction opposite to a predetermined direction. And a second one-way clutch for driving a second treatment element for performing a different massage, which is attached to a distal end of the drive shaft.

[0008]

With this configuration, the first one-way clutch causes the linear motion axis to linearly reciprocate only when the motor rotates in the predetermined rotation direction, and the spring is compressed and expanded by the linear reciprocation of the linear motion axis. A tap massage by the first treatment element can be performed. Further, only when the motor rotates in the opposite direction to the predetermined direction, the second one-way clutch can rotate the drive shaft and perform another massage by another treatment element.

[0009]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an external view of a handy massage machine according to one embodiment of the present invention, and FIG. 2 is a sectional view of a main part thereof.

In FIG. 1, reference numeral 1 denotes a cylindrical holding portion made of hard plastic or the like, and a main body having a shape formed by combining two cylindrical members made of hard plastic or the like into a substantially T-shape at the upper end thereof. 2 are connected. A vibrating head 3 as a second treatment element is attached to one end of an upper structure 2a of the main body 2 via a bellows portion 3a, and a hitting head 4 as a first treatment element is attached to the other end. I have.
Note that reference numeral 1a denotes a changeover switch for switching between tapping and vibration massage operations, 1b denotes a power switch, and 1c denotes a power cord.

In FIG. 2, reference numeral 5 denotes an upper structure 2a of the main body 2.
A rotary-linear motion converter provided at the center for converting rotary motion into linear motion;
Is provided with a motor 6 for operating the vibration head 3 and the hitting head 4, a one-way clutch described later, a worm, a worm hole, a weight shaft with an eccentric weight and the like. The motor 6 is fixed to a housing 7 made of aluminum or the like, and the motor 6 and the housing 7 are positioned by ribs 8a and 8b of a main body case 8.

The motor 6 has a rotating shaft projecting in two directions. A worm 9 is fixed to one of the rotating shafts 6a as shown in FIG. 3, which is an exploded view of the rotation-linear motion converter 5. The worm 9 has a worm hole 10
Are engaged.

A first one-way clutch 11 is press-fitted into the center of the worm hole 10, and an eccentric shaft 13 having an eccentric shaft 12 is inserted into the first one-way clutch 11. Here, the first one-way clutch 11 rotates with the eccentric shaft 13 fitted when the motor 6 rotates forward, and engages the eccentric shaft 13 when the motor 6 rotates reversely. Instead, they shall idle.

The eccentric shaft 13 rotates in a state fitted to the first one-way clutch 11 so that
The hitting head 4 is pulled into the inside of the main body 2 via a link and a head shaft described later, and a spring described later is compressed.

At the moment when the striking head 4 is most retracted into the main body 2 (hereinafter referred to as a top dead center state), this time at a speed higher than the rotation speed of the first one-way clutch 11 due to the spring force of the spring. The first one-way clutch 11 rotates in the same direction as the first one-way clutch 11 in a non-engaged state with the first one-way clutch 11. The eccentric shaft 13 is rotatably held by an oil-impregnated bearing 14a crimped to one housing member 7a of the housing 7 that can be disassembled into two.

On the other hand, the eccentric shaft 12 of the eccentric shaft 13
Link 15 having insertion holes 15a and 15b at both ends
One of the oil-impregnated bearings 14b is slidably inserted into the crimped insertion hole 15a, and the shaft fixing pin 16 is slidably inserted into the other insertion hole 15b.

Here, a female screw portion 16a is formed on the curved surface of the shaft fixing pin 16, and this female screw portion 1a is formed.
6a, a male screw 17a at the rear end of the head shaft 17 which is a linear motion axis having male screw 17a, 17b at both ends.
Are screwed together and fixed with an adhesive or the like. The head shaft 17 is rotatably held by an oil-impregnated bearing 14c. With such a configuration, the rotation-linear motion converter 5 changes the rotational motion of the motor 6 into a linear reciprocating motion of the head shaft 17.

Further, the head shaft 17 has a structure shown in FIG.
As shown in the figure, a spring 18 that repeats compression and expansion is wound around the linear reciprocating motion of the head shaft 17 outside the rotation-linear motion conversion unit 5, and the spring 18 is pressed against the male screw portion 17b at the tip end. The spring retainer 19 is screwed and fixed with an adhesive or the like.

The spring force of the spring 18 releases the engagement with the first one-way clutch 11, so that the eccentric shaft 13 can be rotated faster than the rotation of the first one-way clutch 11. Of a large size. At the end of the spring retainer 19, the hitting head 4 in which a nut 4a is insert-formed is detachably screwed.

On the other hand, a second one-way clutch 21 crimped to the clutch holder 20 is mounted on the other rotating shaft 6b of the motor 6. This second one-way clutch 2
1 is a motor 6 opposite to the first one-way clutch 11.
Is transmitted to the clutch holder 20 when the motor rotates reversely, and is not transmitted when the motor rotates forward.

The clutch holder 20 is connected via a joint spring 22 to a split shaft 24 which is a drive shaft having an eccentric weight 23 attached to a tip end thereof by a nut 24a. 24 is supported by a bearing 25 provided on the vibration head 3. Thus, the rotation of the barrel shaft 24 eccentrically rotated by the eccentric weight 23 is transmitted to the vibration head 3 via the bearing 25, and the vibration head 3 is configured to vibrate.

Next, the massage operation of the handy massage machine configured as described above will be described.

When the changeover switch 1a is set to tap, the motor 6 rotates forward. In this case, the first one-way clutch 11 rotates through the worm 9 and the worm hole 10, and the rotation of the first one-way clutch 11 As a result, the eccentric shaft 13 rotates by engaging with the first one-way clutch 11.

Thus, the eccentric shaft 13 is connected to the link 1
While rotating the spring 18 through the head 5 and the head shaft 17, it rotates until it reaches the top dead center state. At the moment of the top dead center state, the eccentric shaft 13 rotates faster than the rotation of the first one-way clutch 11 due to the spring force of the spring 18, so that the engagement by the first one-way clutch 11 is released. You. As a result, the eccentric shaft 13 rotates in the same direction as the first one-way clutch 11 with vigor according to the spring force of the spring 18.

Then, in association with the rotation of the eccentric shaft 13, the hitting head 4 linearly moves toward the outside of the main body 2 via the link 15 and the head shaft 17. By hitting the hitting head 4 to the affected part, hitting massage can be performed. At this time, the second one-way clutch 2 mounted on the other rotating shaft 6b of the motor 6
1 does not fit with the clutch holder 20, so that the vibration head 3 does not vibrate.

On the other hand, when the changeover switch 1a is adjusted to the vibration, the motor 6 rotates in the reverse direction. In this case, the second one-way clutch 21 operates to rotate the clutch holder 20. As a result, the rotation of the clutch holder 20 is transmitted to the dividing cylinder shaft 24 via the joint spring 22, and the dividing cylinder shaft 24 rotates to vibrate the vibration head 3. By applying the vibration head 3 to the affected part, vibration massage can be performed.

At this time, one of the rotating shafts 6a of the motor 6 also rotates in the reverse direction, whereby the worm 9 and the worm hole 1 are rotated.
Although the first one-way clutch 11 rotates through 0, this rotation is in a direction that does not fit with the eccentric shaft 13, so that the eccentric shaft 13 does not rotate and hitting massage is not performed.

As described above, the single first one-way clutch 11 provided in the rotation-linear motion converter 5 allows the motor 6 to rotate.
Is rotated forward, the rotary motion is converted to a linear motion so that the hitting head 4 can be linearly moved and the spring 18 can be rotated.
A strong beating massage can be performed by the spring force of. Further, a second rotation shaft 6b provided on the other rotation shaft 6b of the motor 6 is provided.
When the motor 6 is rotated in the reverse direction by the one-way clutch, vibration massage can be performed.

In the above description, the case where the motor 6 is provided at the center of the upper structure 2a of the main body 2 has been described. However, the present invention is not limited to this, and as shown in FIG. The motor 6 may be provided on the lower structure 2b of the main body 2 so that the axis of the motor 6 intersects the axis connecting the (vibrating head 3 and the hitting head 4).

In FIG. 4, the worm 9 and the bevel gear 26a are fixed to the rotating shaft 6a of the motor 6. The worm 9 is engaged with the worm hole 10 into which the first one-way clutch 11 is press-fitted at the center, while the bevel gear 26a is engaged with another bevel gear 26b. The rotation shaft 2 of the other bevel gear 26b
A second one-way clutch 21 is mounted on 7, and a rotating shaft 27 is rotatably held by a bearing 28 provided on the housing 7.

Thus, when the motor 6 rotates forward, the first one-way clutch 11 operates via the worm 9 and the worm hole 10 to perform a beating massage, and when the motor 6 rotates in the reverse direction, the two bevel gears 26a , 26b actuate the second one-way clutch 21 to perform vibration massage.

As described above, by providing the motor 6 in the lower structure 2b of the main body 2, massage according to the rotation direction of the motor 6 can be performed, and the distance between the vibration head 3 and the hitting head 4 can be reduced. Because the length can be shortened, the shape can be reduced, and the center of gravity can be
, The operation stability can be increased.

[0036]

As described above, according to the present invention, the first one-way clutch causes the linear motion axis to linearly reciprocate only when the motor rotates in the predetermined rotational direction, and the linear reciprocation of the linear motion axis. The spring can be compressed and expanded by the movement to perform a tapping massage by the first treatment element. Also,
Only when the motor rotates in the opposite direction to the predetermined direction, the second one-way clutch can rotate the drive shaft and perform another massage by another treatment element.

As a result, the number of one-way clutches used for performing tapping and other massages and for performing a strong tapping massage can be reduced to two, thereby reducing the cost and the assembly process. Further, the noise of the clutch unit can be reduced, and the reliability of the clutch unit can be improved.

[Brief description of the drawings]

FIG. 1 is an external view of a handy massage machine according to one embodiment of the present invention.

FIG. 2 is a sectional view of a main part of the handy massage machine.

FIG. 3 is an exploded view of a rotation-linear motion conversion unit of the handy massage machine.

FIG. 4 is a sectional view of a main part of a handy massage machine according to another embodiment of the present invention.

[Explanation of symbols]

 2 Body 3 Vibration head 4 Hitting head 5 Rotation-linear motion converter 6 Motor 11 First one-way clutch 18 Spring 21 Second one-way clutch

Claims (1)

(57) [Claims] 1. A motor, a rotary-linear motion converter provided on a rotary shaft of the motor for converting rotary motion into linear reciprocating motion, a linear motion axis connected to the rotary-linear motion converter, A spring that is wound around a linear motion axis and repeats compression / expansion by linear reciprocating motion of the linear motion axis, a first treatment element attached to a tip end of the linear motion axis for performing a tapping massage, and the rotation-linear motion The linear motion axis is provided in the conversion unit, and the linear motion axis is moved while compressing the spring to a predetermined position only when the motor rotates in a predetermined direction, and after the position, the linear motion axis is extended by extension of the spring. And a first one-way clutch for performing a beating massage by the first treatment element by linearly reciprocating, and a motor attached to a rotation shaft of the motor and rotating the motor in a predetermined direction. A second one-way clutch that rotates the drive shaft only when rotated in the direction, and drives a second treatment element that performs a different massage attached to the distal end of the drive shaft. Handy massage machine.