KR101895191B1 - Driving apparatus for massaging device - Google Patents

Abstract

The present invention relates to a driving device for a massaging device, and the purpose of the present invention is to prevent vibrations from being generated in a no-load state to prevent a service life from being reduced by vibrations by receiving rotational forces provided through a power providing unit to provide an acupressure force in a load state when a user body is contacted; and to strengthen a product competitiveness by improving assemblability and reducing a manufacturing cost by means of simplification of components. To this end, the present invention, for a driving device for a massaging device which is configured to a massaging device and provides an acupressure force to have a massaging effect, comprises: a main body (10); a rotational shaft (20) which is provided in a center of the main body (10) and rotates according to a rotational power provided through a power providing unit (2); an acceleration rim (30) which is provided coaxially with the rotational shaft (20) on one side of the rotational shaft (20), increases an acceleration force by rotating along with the rotational shaft (20), prevents vibrations from being generated because a rotation is only performed in a no-load state, and induces an acupressure force by means of the acceleration force in a load state; and a pressure housing (40) which is coupled to the acceleration rim (30) not to interfere the rotation of the acceleration rim (30) and, in a load state, provides the acupressure force for a user body by means of the acceleration force induced by the acceleration rim (30).

Description

[0001] The present invention relates to a driving apparatus for a massaging device,

The present invention relates to a massage device, and more particularly, to a massage device that is configured to receive a rotational force provided through a power providing portion to provide a load state, that is, a pressure when a user's body makes contact, To a driving apparatus for a massage machine which enhances the competitiveness of a product in order to prevent shortening of the use year due to vibration and to simplify the components and to improve the assembling property and the manufacturing cost.

Generally, a massage is a device used for the purpose of health promotion and physical therapy by applying physical vibration or trembling to a massage part of a user to promote blood circulation in the relevant part and relax the muscles.

Such a massager includes a massage device drive device that converts the rotational motion of the drive motor into a physical vibration.

A conventional driving apparatus includes a rotary shaft rotated by a driving motor, an eccentric body fixedly installed on one side of the rotary shaft so that the center of gravity thereof is peripherally relieved, and a transmission portion for transmitting vibration generated by the rotation of the eccentric body to the massage portion .

That is, the vibration generated due to the eccentric motion of the eccentric body as the rotary shaft rotates is transmitted to the massage part through the transmission part.

Such conventional driving apparatus for a massage machine generates vibration by a quick eccentric rotational motion of an eccentric body, so that the period of vibration is very short, but the displacement of the transmitting portion due to the vibration is not large.

Therefore, there is a problem that the short-period vibration transmitted to the massage part is irritating, and even when it is used for a long time due to such irritating vibration, the massage part is prone to itching.

The problem is that when the intensity of the vibration is increased, the eccentric rotation speed of the eccentric body becomes faster and the period of the vibration becomes shorter and more remarkable.

In the conventional massage device driving device, since the eccentric body itself rapidly rotates and vibrations occur, center displacement of the eccentric body is performed quickly, and displacement due to the vibration is not large, so that repetitive pressing and releasing The massage effect in the form has a disadvantage that it is not large.

If the center of the eccentric body is largely spaced from the center of rotation in order to improve the displacement due to such vibration, the generated vibration is excessively used, which causes inconvenient and irritating problems, so that the displacement caused within a proper range of vibration is not large .

Also, due to the quick eccentric rotation of the eccentric body, there is a problem that it generates uncomfortable noise with a certain high sound with the vibration.

In order to solve the above problems, Korean Patent No. 10-1066893, for example, discloses a driving apparatus for a massage machine, which comprises a rotating shaft 100 that receives power from a driving motor and rotates, a fixed body (not shown) An eccentric bushing 300 mounted on the eccentric bush 300 and coupled to the rotary shaft 100 such that the center of the eccentric bush 300 is offset from a center of rotation of the rotary shaft 100; And an eccentric weight 510 is provided at one end of the eccentric body 400. The eccentric weight 510 is disposed in a direction opposite to the eccentric direction of the eccentric body 400. [ And a balance body 500 coupled to the rotary shaft 100 so that the eccentric weight 510 is positioned.

Accordingly, not only the vibration generated by the rotation of the eccentric member itself but also the vibration due to the eccentric rotation which can cause the dislocation motion with a large displacement due to the center shift of the eccentric body and the uncomfortable rotation can be minimized Part of the purpose can be achieved.

However, in the conventional massage apparatus for a massage machine, since the driving method for causing vibration adopts the 'eccentric' method, there is a problem that it can not fundamentally solve the problem about the vibration induction through the eccentric type.

1. Shorten the years of use of the drive.

This is because the eccentric body is rotated eccentrically with respect to the rotary shaft through the eccentric bushes eccentrically spaced from the rotary shaft at the center, so that the eccentric body is eccentrically rotated even when the user's body is not in contact with the body There is a problem that the vibration of the eccentric body is transmitted to the entire driving device, thereby shortening the use year.

2. Ground pressure is weak.

This is because the eccentric bushes eccentrically spaced at regular intervals around the rotary shaft are eccentrically rotated, and the user's body is pressed in a state where the eccentric bushes are eccentrically rotated. In this case, There is a problem that the applied pressure is lowered.

In addition, there is a problem that the eccentric bushes are rotated in a state where the eccentric bushes are spaced apart from each other at a predetermined interval on the rotating shaft, thereby causing an unbalance in transmission of rotational force, resulting in an unstable rotating state.

3. There is a difference in pressure by position.

This is because, as can be seen from the eccentricity diagram, when it is assumed that the eccentric bush is located at one point of the rotation axis, for example, the vertical center upper end of the rotation axis, , The bottom pressure in the vertical lower center and the horizontal direction of the rotary shaft is minimized.

4. Composition is complex, and manufacturing cost is high.

This is because, as shown in FIGS. 1 and 2 for example, in order to maintain a firm coupling relationship between the rotary shaft and the eccentric bush, a process of forming a plane in which the eccentric bush and the balance body are inserted is added, There is a problem that the manufacturing unit price is increased due to the addition.

In addition, in order to smoothly perform the eccentric action, the eccentric bush and the balance body are formed on the rotating shaft, and the eccentric body is inserted into the eccentric bush, so that the manufacturing cost is increased due to the addition of the component have.

As a result, the eccentric drive system of the massage device drive unit shortens the life span for the whole product with continuous vibration induction as described above, and the dispersion of the rotational force transmission due to the eccentricity and the unstable relationship And there is a problem of lowering the product competitiveness due to the increase in the manufacturing cost due to the complexity of the structure and the addition of the manufacturing process.

Korean Patent Publication No. 10-798292 (2008.01.29 Announcement) Korean Patent Publication No. 10-1066893 (issued on September 27, 2011) Registered Utility Model No. 20-468296 of Korea Register (Announcement 2013.08.05)

It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a power supply unit that is configured to receive a rotational force provided through a power providing unit and to provide a load when a user's body contacts, To prevent vibration from occurring in the massage device, to prevent shortening of the years of use due to vibration, and to enhance the competitiveness of the product in order to improve the assembling property and the manufacturing cost by simplifying the constituent elements.

According to an aspect of the present invention, there is provided a massage device comprising: a body; A rotating shaft that is formed at the center of the main body and rotates according to a rotational power provided through the power providing unit; And is configured to be concentric with the rotary shaft at one side of the rotary shaft so as to increase the acceleration force while rotating together with the rotary shaft so as to prevent the occurrence of vibration and to generate the ground pressure by the acceleration force Accelerated grooves; And a pressure housing coupled to the acceleration rim to provide a user's body pressure by an acceleration force generated in the acceleration rim when the load is in a state of not interfering with the rotation of the acceleration rim .

In the present invention, the acceleration rim may include an acceleration portion having a predetermined size such that an acceleration force is generated when the acceleration axis is inserted in the center and the acceleration axis is rotated together with the rotation axis; And a boss extending a predetermined length from one end or both ends of the acceleration part to support the pressing housing so as not to interfere with the rotation of the acceleration part as it is inserted into the second bearing formed in the pressing housing; And at least one detent screw which is fastened to one side of the boss and supports the acceleration shaft so that the acceleration rim is firmly fixed to the rotation shaft.

In the present invention, it is preferable that the acceleration portion is formed in a fan shape.

In the present invention, the lower end portion of the acceleration portion includes an acceleration pushing portion for increasing the acceleration force of the acceleration rim; Wherein the accelerating portion has a minimum point at each of both ends of the acceleration portion formed in a fan shape so that the cross section is minimized; The vertical center lower end of the acceleration part may have a maximum cross-sectional area to maximize the acceleration force when the acceleration rim is rotated.

In the present invention, the acceleration portion includes an acceleration enhancing portion for enhancing the acceleration force of the acceleration rim; Wherein the acceleration enhancer moves along a lower edge of the acceleration portion to increase an acceleration force of the acceleration rim; And a stopper configured to be coupled to one end of the acceleration section, the stopper interrupting the arbitrary disengagement of the mover from the acceleration section; And a moving rail for guiding smooth movement of the mover to the lower end of the acceleration part.

The present invention is configured to provide a rotational force provided through a power providing unit to provide a load state, that is, a pressure when a user's body makes contact, thereby preventing vibration from occurring in a no-load state, And it is effective to strengthen the competitiveness of the product to improve the assembling property and the manufacturing cost by simplifying the components.

FIG. 1 is an exploded perspective view of a conventional massage device driving apparatus. FIG.
2 is an assembled sectional view of Fig.
Fig. 3 is a side view showing a path in which the center of the eccentric body swings with respect to the center of the rotation axis in Fig. 1; Fig.
FIG. 4 is an exploded perspective view of a driving apparatus for a massage machine according to a first embodiment of the present invention; FIG.
FIG. 5 is an assembled sectional view of a driving device for a massage machine according to a first embodiment of the present invention; FIG.
6 is a state diagram in which a ground pressure acts in a load state according to the first embodiment of the present invention;
7 is a perspective view of an acceleration rim according to a second embodiment of the present invention;
8 is a front view of an acceleration ram in accordance with a second embodiment of the present invention;
FIGS. 9A and 9B are cross-sectional views of an acceleration rim according to a second embodiment of the present invention; FIG.
10 is a photograph of a prototype of an acceleration rim according to a second embodiment of the present invention.
11 is a perspective view of an acceleration rim according to a third embodiment of the present invention.
12 is a front view of an acceleration rim according to a third embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

≪ Embodiment 1 >

The massage device drive device 1 of the first embodiment is configured to receive the rotational force provided through the power providing device 2 to provide the load state, that is, the pressure when the user's body is contacted, It prevents vibration from occurring and shortens the years of use due to vibration, and enhances product competitiveness to improve assembling performance and lower manufacturing cost by simplifying components.

4 to 6, the massage device driving apparatus 1 includes a main body 10, a rotary shaft 20, an acceleration rim 30, a pressure housing 40, a bracket 50, And first and second covers (60) and (70).

The main body 10 functions to support the components as a whole while preventing the interference with the vibration of the acceleration rim 30 while maintaining a coupling relationship with the power supply 2.

An insertion hole 12 is formed at the center of the main body 10 to form a space so that a coupling relation with the power supply 2 can be smoothly performed.

At least one first bearing 14 for supporting the rotary shaft 20 is inserted into the insertion hole 12 of the main body 10 so that the rotary shaft 20 is inserted and smoothly rotated.

Of course, the present invention is not limited to the first bearing 14, and any means can be used as long as the rotating shaft 20 located at the center of the main body 10 can rotate smoothly. For example, it may be a bushing.

In this case, the insertion hole 12 includes at least one stop ring 16 for supporting the insertion position of the first bearing 14 to be fixed.

Of course, the present invention is not limited to the stop ring 16, and any means can be used as long as the first bearing 14 inserted in the insertion hole 12 can be stably fixed.

The rotary shaft 20 is inserted into the insertion hole 12 of the main body 10 and is rotated by the rotational power provided by the power supply 2.

And a connecting portion 22 connected to the power supply 2 at one end of the rotating shaft 20.

The connecting portion 22 is formed of a screw thread as shown in the drawing, but the present invention is not limited thereto. The connecting portion 22 can be smoothly coupled with the power providing portion 2, Any shape can be used.

Further, the other end of the rotary shaft 20 includes an insertion fixing part 24 for supporting the acceleration rim 30 so that the acceleration rim 30 can be inserted and fixed.

A coupling nut 26 is fastened to an end of the rotary shaft 20 to insert the acceleration rim 30, the pressing housing 40 and the bracket 40 into the rotary shaft 20, .

Of course, the present invention is not limited to the fastening nut 26, and any means can be used as long as the fastening nut 26 can firmly fix or support the components inserted into the rotary shaft 20. For example, a split pin or a wedge.

The acceleration rim 30 is inserted into the insertion fixing part 24 of the rotary shaft 20 and accelerates the rotational force of the rotary shaft 20 to generate a pressing force.

The acceleration rim 30 includes an acceleration portion 32 that causes acceleration in the acceleration rim 30 to perform circular motion in accordance with Newton's second law of motion.

The acceleration part 32 is positioned at a center of the rotary shaft 20 and is formed to have a predetermined size so as to induce acceleration.

In this case, the acceleration part 32 is formed in a fan shape having a range of 30 to 120 degrees.

The diameter of the acceleration part 32 is formed to be equal to or smaller than the outer diameter of the main body 10 and is set to be as close as possible to the outer surface of the main body 10, .

The acceleration rim 30 includes a boss 34 protruding a predetermined length from one end or both ends of the acceleration part 32.

The boss 34 maintains the state where the pressure housing 40 is inserted to support the load acting pressure due to an acceleration force generated in the acceleration rim 30.

A screw hole is formed at one side of the boss 34 for fastening at least one set screw 36 to the rotary shaft 20 so as to be held firmly fixed to the acceleration rim 30 .

The detent screw 36 is fastened to at least one screw hole formed on one side of the boss 34 so that one end of the detent screw 36 is pressed and fixed to one side of the rotary shaft 20 so that an acceleration rim 30 So that it is firmly fixed.

The pressure housing 40 functions to provide a massage effect by pressing the acceleration rim 30 with the acceleration force when the load is applied by the acceleration force caused by the rotation of the acceleration rim 30.

The bush 34 of the acceleration rim 30 is inserted into the center of the pressure housing 40 to support the acceleration rim 30 so as not to interfere with rotation.

The second bearing 42 supports the acceleration rim 30 to smoothly rotate the acceleration rim 30 when the load is applied, that is, when a part of the user's body is in close contact with the pressure housing 40, And the rotation of the acceleration rim 30 is supported so that the pressure can be applied by the acceleration force of the acceleration rim 30.

For example, when the pressurizing housing 40 is directly coupled to the rotary shaft 20 without forming the second bearing 42, since the load action is not transmitted to the acceleration rim 30, The acceleration force of the acceleration rim 30 becomes useless.

In addition, a structure and a shape are formed in the pressure housing 40 to prevent the second bearing 42 from being disengaged.

At least one stop ring or the like is formed in the pressure housing 40 so that the second bearing 42 prevents any deviation.

The bracket 50 is provided at an end of the rotary shaft 20 to support the components inserted into the rotary shaft 20.

Of course, the present invention is not limited thereto, and the bracket 50 may be omitted in some cases.

Further, the bracket 50 is injection-molded through a synthetic resin in consideration of convenience of manufacture and manufacturing cost.

The first cover 60 surrounds the outer periphery of the main body 10 and the pressurizing housing 40 and functions to prevent foreign matter from being infiltrated arbitrarily.

The second cover 70 is protruded at one end so as to surround the outer periphery of the bracket 50, and performs a massage function.

The second cover 70 is formed hemispherically, as shown.

Of course, the present invention is not limited thereto, and may be configured in various shapes or structures according to positions for performing a massage function.

In some cases, the second cover 70 may be omitted.

The first and second covers 60 and 70 are made of rubber or silicone or soft synthetic resin and smoothly pressurize the pressure housing 40 by the acceleration force of the acceleration rim 30 when the load is applied. So as to have an elastic force.

The first and second covers 60 and 70 are made of a material harmless to the human body so that troubles such as an allergic reaction do not occur even if the first and second covers 60 and 70 are in direct contact with the user's skin.

Also, the first and second covers (60) and (70) are configured to have antibacterial properties.

That is, 1 to 10 parts by weight of the antimicrobial substance is contained in 100 parts by weight of the raw materials of the first and cover (60) and (70).

The antimicrobial substance is silver powder, photocatalyst material, wood vinegar, berberine or phytoncide. Of course, it is not limited thereto, and any material that has antibacterial properties and is harmless to the human body can be used.

A state of engagement of the massage device driving apparatus constructed as above will be described.

First, the rotation shaft 20 is inserted into the insertion hole 12 of the main body 10.

Next, the acceleration rim 30, the pressure housing 40, and the bracket 50 are sequentially inserted into the insertion fixing portion 24 of the rotation shaft 20 protruding from one end of the main body 10.

At this time, the acceleration rim 30 is fixed to one side of the rotary shaft 20 by fastening the detent screw 36 to the screw hole formed at one side of the boss 34 do.

Further, the pressure housing 40 is assembled in a state of being inserted into the boss 34 of the acceleration rim 30.

When the bracket 50 is inserted into the rotary shaft 20, the rotary shaft 20 is fastened to the rotary shaft 20 by the fastening nut 26 at the end of the rotary shaft 50, The fixing of the bracket 40 and the bracket 50 is completed.

Subsequently, the first cover 60 is placed on the outer periphery of the main body 10 and the pressure housing 40.

In addition, the bracket 50 covers the second cover 70 so that one end thereof is supported.

The assembling process for the massage device driving device 1 is completed through the above process. The present invention is characterized in that the rotation of the acceleration rim 30, the pressure housing 40, and the bracket 50) are sequentially assembled, it is possible to eliminate the inconvenience and troublesome assembly that requires the effort of the operator to accurately and precisely match the eccentricity when the eccentricity is formed by the conventional eccentricity, and shorten the assembling time by the ease of assembly do.

In addition, since the present invention is assembled in a concentric circle state, and the construction of the automation system can be smoothly performed, the manufacturing cost can be greatly reduced.

The operation state of the massage device driving apparatus assembled as described above will be described below.

In a no-load state, that is, when a part of the user's body is not in contact, the acceleration rim 30, which is concentrically coupled to the rotary shaft 20, is circularly moved with the rotary shaft 20 on the same axial line So that vibration or the like is not caused.

The pressure housing 40 is prevented from being interfered with by the circular motion of the acceleration rim 30 by the second bearing 42 of the pressure housing 40 inserted in the boss 34 of the acceleration rim 30, The rotation shaft 20 and the acceleration rim 30 rotate only in the circular motion without any load.

That is, in the conventional massage device driving system employing the eccentric drive system, vibration is continuously generated by the eccentricity even in the no-load state, and such vibration is transmitted to the entire massager, And the present invention prevents vibration from occurring in the no-load state, thereby preventing the use year from being shortened.

6, when the body part of the user is in contact with one side of the pressure housing 40, the acceleration limb rotates together with the rotary shaft 20, (30) is accelerated by the acceleration portion (32) of the acceleration rim (30) and the acceleration force is doubled, and the pressing housing (40) As a result, the user feels pressure.

That is, the pressurizing housing 40 maintains the stopped state L by the user's body contact, and the acceleration rim 30 is accelerated by the rotational force of the rotary shaft 20 and the shape of the acceleration part 32, The user may feel pressure applied by the accelerating force of the acceleration rim 30 so that the massage effect is obtained.

≪ Embodiment 2 >

The same reference numerals are used for the same components as those in the first embodiment, and a detailed description thereof will be omitted.

7 to 10, the acceleration rim 30 of the second embodiment includes an acceleration part 32 and a boss 34. The acceleration rim 30 has a constant thickness and a small size at the lower end of the acceleration part 32, And an acceleration propulsion unit 38 formed of

The accelerating unit 38 has a predetermined thickness at the end of the accelerating unit 32 so that the accelerating force is increased when the accelerating unit 38 rotates along the rotating shaft 20, So that the massage device driving device 1 can be realized.

The accelerating unit 38 has a minimum point S formed at a minimum size at each of both lower ends of the acceleration unit 32 and a maximum point P enlarged toward the center.

The minimum point S is formed so as to have an area in the cross section of the acceleration part 32.

In this case, the minimum point S may be formed in a trapezoidal shape.

The maximum point P is formed so as to have a maximum size area at the lowermost part with reference to the central vertical line of the acceleration rim 30.

In this case, the maximum point (P) is a shape formed by combining a trapezoidal shape and a rectangular shape.

Accordingly, when the acceleration rim 30 rotates together with the rotary shaft 20, an acceleration force is generated by the acceleration portion 32, and an acceleration force is generated by the acceleration pushing portion 38 formed at the lower end of the acceleration portion 32 As the acceleration force is further increased, the pressure that the user feels through the pressure housing 40 is improved.

The accelerating unit 38 may be integrally formed at the lower end of the accelerating unit 32. Of course, the present invention is not limited thereto, and the accelerating unit 38 may be separately manufactured and fixed to the lower end of the accelerating unit 32 by welding or the like.

≪ Third Embodiment >

The same reference numerals as those of the first and second embodiments are used, and a detailed description thereof will be omitted.

11 and 12, the acceleration rim 30 of the third embodiment includes an acceleration part 32 and a boss 34. The acceleration rim 30 has a lower end portion of the acceleration part 32, And an acceleration enhancer 39 for enhancing the acceleration force of the acceleration rim 30 according to the accelerating force.

The acceleration enhancer 39 enhances the acceleration force as the acceleration rim 30 rotates together with the rotation of the rotary shaft 20.

The accelerating unit 39 includes a mover 392 that moves along the lower end of the accelerating unit 32 to increase the acceleration force and a motor 392 that is disposed at one end of the accelerating unit 32, And a stopper 394 for preventing any disengagement from the portion 32.

On the other hand, a moving rail 33 for guiding the mover 392 to move smoothly is formed at a lower end of the acceleration part 32.

The moving rail 33 may have any structure or shape so that the mover 392 can be smoothly moved along the lower end of the acceleration part 32.

In this case, the movable rail 33 maintains the closed state of the one end of the acceleration part 32 and keeps the other end open to allow the movable part 392 to move to the accelerating part 32 So that it can be inserted.

The mover 392 is formed as a weight and moves along the moving rail 33 to perform a function of increasing the acceleration force when the acceleration rim 30 rotates.

The stopper 394 inserts the mover 392 into the movable rail 33 formed at the lower end of the acceleration part 32 and finishes the open part of the acceleration part 32. The movable rail 33 The movable member 392 moving along the movable member 392 is prevented from being arbitrarily disengaged.

The movement speed of the mover 392 is accelerated according to the rotation speed of the acceleration rim 30 when the acceleration rim 30 rotating together with the rotary shaft 20 rotates, So that the ground pressure can be improved.

The above description is only one embodiment for implementing the massage device driving device, and the present invention is not limited to the above-described embodiment. It will be understood by those skilled in the art that various changes may be made without departing from the spirit of the invention.

1: a driving device for a massage machine 10:
12: insertion hole 14: first bearing
16: stop ring 20:
22: connection part 24: insertion fixing part
30: acceleration rim 32: acceleration part
33: movable rail 34: boss
36: detent screw 38:
39: acceleration enhancer 392: mover
394: Stopper 40: Pressurizing housing
42: second bearing 50: bracket
60: first cover 70: second cover

Claims (5)

A massage device comprising: a massager having a massager effect,
A body 10;
A rotating shaft 20 disposed at the center of the main body 10 and rotating in accordance with the rotational power provided through the power providing unit 2;
And is integrally formed with the rotary shaft 20 on one side of the rotary shaft 20 so as to increase the acceleration force while rotating together with the rotary shaft 20 to prevent the generation of vibration, An acceleration rim (30) for inducing ground pressure by an acceleration force; And
And a pressure housing coupled to the acceleration rim (30) to provide a user's body pressure by an acceleration force generated in the acceleration rim (30) when the acceleration rim (30) (40);
The acceleration rim 30 includes an acceleration part 32 having a predetermined size such that a rotary shaft 20 is inserted in the center and is rotated together with the rotary shaft 20 to generate an acceleration force. And
The pressing member 40 is extended from the one end or both ends of the acceleration part 32 and is inserted into the second bearing 42 formed in the pressing housing 40 so that the rotation of the acceleration part 32 is transmitted to the pressing housing 40, A boss (34) for supporting it so as not to interfere with it; And
And at least one detent screw (36) fastened to one side of the boss (34) to support the acceleration shaft (30) in a firmly fixed state on the rotary shaft (20);
The lower end of the acceleration part 32 includes an acceleration propelling part 38 for enhancing the acceleration force of the acceleration rim 30;
The accelerating portion 38 has a minimum point S at which the cross section is minimized at each of both ends of the fan-shaped acceleration portion 32;
A maximum point P at which a vertical cross-sectional lower end of the acceleration part 32 has a maximum cross-sectional area to induce an acceleration force to be increased when the acceleration rim 30 is rotated;
Wherein the massage device comprises:
delete delete delete [2] The apparatus according to claim 1, wherein the acceleration unit (32)
And an acceleration enhancer (39) for enhancing an acceleration force of the acceleration rim (30);
The acceleration enhancer 39 moves along the lower edge of the acceleration portion 32 to increase the acceleration force of the acceleration rim 30; And
And a stopper 394 configured to be fastened to one end of the acceleration part 32 to intermittently disconnect the mover 392 from the acceleration part 32;
A moving rail 33 for guiding the smooth movement of the mover 392 to the lower end of the acceleration part 32;
Wherein the massage device comprises:

Images