JP2999872B2 - 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 Conventional handy massage machines include:
The rotary motion of the motor is changed to a linear motion, and the compression spring is compressed and released by the linear motion, and the hitting head is linearly moved in conjunction with the compression and release of the compression spring.
Some include a linear motion converter.

[0003] In such a handy massager, as shown in FIG. 5, a compression spring 1 has a head shaft 2 which is a linear motion axis connected to a rotation-linear motion converter.
The hitting head 3 screwed to the tip of the head shaft 2 while being wound around the main body 4 is held in a state of being compressed on the contact surface of the rib of the main body 4 and is compressed and released in accordance with the linear motion of the hitting head 3 It is carried out.

The hitting head 3 has a structure that can be removed by releasing the screw so that the hitting head 3 can be replaced with a hitting head of a different shape in order to perform a different type of hitting massage.

[0005]

However, in such a conventional hand massager, when the tapping head 3 is removed from the head shaft 2 to perform different types of tapping massage, the tapping head 3 is compressed. Before the screwing is completely released by the spring force of the compression spring 1, the hitting head 3 comes off the head shaft 2, and at this time, there is a problem that the threads of the head shaft 2 and the hitting head 3 are damaged. Was.

If the spring force of the compression spring 1 is large, there is also a problem that the hitting head 3 may fly out and injure the user.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a handy massage machine capable of safely replacing a tapping head without damaging components.

[0008]

SUMMARY OF THE INVENTION The present invention provides a motor, a rotary-linear motion converter for converting the rotary motion of the motor into a linear motion, and a linear motion axis connected to the rotary-linear motion converter. A compression spring wound around the linear motion axis to perform compression release by the linear motion of the linear motion axis; a hitting head detachably attached to a tip end of the linear motion axis for performing a tapping massage; A compression spring stopping member fixed at a predetermined position between the hitting head of the shaft and the compression spring is provided.

[0009]

According to this structure, the linear motor is fixed at a predetermined position between the hitting head attached to the tip of the linear motion shaft connected to the rotary-linear motion converter and the compression spring wound around the linear motion shaft. The spring force of the compression spring can be applied to the compression spring stopping member, and the spring force of the compression spring can be prevented from directly acting on the hitting head.

[0010]

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 cross-sectional view of a main part thereof. 1 and 2, the same reference numerals as those in FIG. 5 indicate the same or corresponding parts.

In FIG. 1, reference numeral 5 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. 4 are connected. A vibrating head 6 is attached to one end of an upper structure 4a of the main body 4 via a bellows portion 6a, and a hitting head 3 is attached to the other end. Reference numeral 5a denotes a changeover switch for switching between hitting and vibration massage operations, 5b denotes a power switch, and 5c denotes a power cord.

In FIG. 2, reference numeral 7 denotes an upper structure 4a of the main body 4.
A rotary-linear motion converter for converting rotary motion into linear motion provided in the center portion. The rotary-linear motion converter 7 includes a motor 8 for operating the hitting head 3 and the vibration head 6. A worm, a worm hole, and the like, which will be described later, are provided. The motor 8 is fixed to a housing 9 made of aluminum or the like.
a, 10b.

The motor 8 has a rotating shaft protruding in two directions, and a worm 11 is fixed to one of the rotating shafts 8a as shown in FIG. 3, which is an exploded view of the rotation-linear motion converter 7. The worm 11 is engaged with the worm hole 12.

A one-way clutch 13 is press-fitted into the center of the worm hole 12, and an eccentric shaft 15 having an eccentric shaft 14 is inserted into the one-way clutch 13. Here, for example, when the motor 8 rotates forward, the one-way clutch 13 rotates with the eccentric shaft 15 fitted therein, and when the motor 8 rotates in the reverse direction, the one-way clutch 13 does not engage the eccentric shaft 15 and runs idle. Shall be.

The eccentric shaft 15 rotates in a state of being fitted to the one-way clutch 13, thereby pulling the hitting head 3 into the inside of the main body 4 via a link and a head shaft 2, which will be described later, and compressing the compression spring 1. I do. At the moment when the striking head 3 is most retracted inside the main body 4, the one-way clutch is now rotated at a speed higher than the rotation speed of the one-way clutch 13 by the spring force of the compression spring 1 and in a non-fitted state with the one-way clutch 13. 13 rotates in the same direction. The eccentric shaft 15 is rotatably held by an oil-impregnated bearing 16a crimped to one housing member 9a of the housing 9 which can be disassembled into two.

On the other hand, the eccentric shaft 14 of the eccentric shaft 15
Link 17 having insertion holes 17a and 17b formed at both ends
One of the oil-impregnated bearings 16b is slidably inserted into the crimped insertion hole 17a, and the shaft fixing pin 18 is slidably inserted into the other insertion hole 17b.

Here, a female screw portion 18a is formed on the curved surface of the shaft fixing pin 18, and the female screw portion 1a is formed.
A male screw portion 2a at the rear end of the head shaft 2 having male screw portions 2a and 2b at both ends is screwed to 8a, and fixed with an adhesive or the like. The head shaft 2 is rotatably held by an oil-impregnated bearing 16c.

As shown in FIG. 2, a compression spring 1 is wound around the head-shaft 2 outside the rotation-linear motion conversion unit 7, and a predetermined position of the male screw 2b at the tip end thereof. Is screwed with a spring retainer 19, which is a compression spring stopping member, and is fixed with an adhesive or the like.

Since the spring force of the compression spring 1 releases the engagement of the one-way clutch 13, the eccentric shaft 1
5 is large enough to be able to rotate faster than the worm hole 12. A hitting head 3 having a nut 20 inserted therein is detachably screwed to the tip of the spring retainer 19.

Next, the replacement of the striking head in the handy massage machine configured as described above will be described.

Now, in order to replace the hitting head 3 with a hitting head 3a having a plurality of projections as shown in FIG.
After turning off the power switch 5b of the gripper 5 of the handy massage machine, the hitting head 3 is rotated to release the screw engagement with the head shaft 2, and the hitting head 3 is removed.

At this time, the compression spring 1 is in a state of being pressed against the front contact surface of the housing 9 by the spring retainer 19. Here, since the spring retainer 19 is fixed to the head shaft 2, the spring force of the compression spring 1 acts on the head shaft 2 via the spring retainer 19.

In this case, the head shaft 2 rotates.
Since the compression spring 1 is held by the link 17 via the shaft fixing pin 18 in the linear motion converter 7, the compression spring 1 is kept compressed by the spring holder 19.
And between the housing 9 while being compressed.

After the tapping head 3 is detached in this manner, another tapping head 3a having a plurality of projections is screwed into the head shaft 2 so that the tapping head 3
Exchange ends.

Accordingly, when the hitting head 3 is rotated to release the screw engagement between the hitting head 3 and the head shaft 2, the spring force of the compression spring 1 does not act on the hitting head 3, so that the user can The tapping head 3 can be safely replaced without damaging the threads of the head shaft 2 and the tapping head 3.

By fixing the spring retainer 19 to the head shaft 2 as described above, the spring force of the compression spring 1 can be applied to the head shaft 2 via the spring retainer 19, and the spring force is applied to the striking head 3. It can be prevented from working.

[0028]

As described above, according to the present invention, the hitting head attached to the tip of the linear motion shaft connected to the rotation-linear motion conversion unit and the compression spring wound around the linear motion shaft are used. The spring force of the compression spring can be applied to the compression spring restraining member fixed at a predetermined position therebetween, and the spring force of the compression spring can be prevented from directly acting on the hitting head. Thus, the hitting head can be safely replaced without damaging the hitting head, the linear motion axis, and other components.

[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 diagram showing how a hitting head of the handy massage machine is replaced.

FIG. 5 is a schematic configuration diagram of a hitting head section of a conventional handy massage machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compression spring 2 Head shaft 3 Hitting head 4 Main body 7 Rotational-linear motion conversion part 8 Motor 9 Housing 19 Spring retainer

Claims (1)

(57) [Claims] 1. A motor, a rotary-linear motion converter for converting a rotary motion of the motor into a linear motion, a linear motion axis connected to the rotary-linear motion converter, and a wire wound around the linear motion axis. A compression spring for performing compression release by linear motion of the linear motion axis, a hitting head for performing a tapping massage detachably attached to a tip end of the linear motion axis, the hitting head for the linear motion axis and the compression A compression spring stopping member fixed at a predetermined position between the spring and the spring.