WO2021062988A1

WO2021062988A1 - Reciprocating muscle relaxation apparatus and machine core thereof

Info

Publication number: WO2021062988A1
Application number: PCT/CN2020/079886
Authority: WO
Inventors: 曹曙光; 万勇
Original assignee: 深圳市倍轻松科技股份有限公司
Priority date: 2019-09-30
Filing date: 2020-03-18
Publication date: 2021-04-08
Also published as: CN110575381A

Abstract

Disclosed are a reciprocating muscle relaxation apparatus and a machine core (70) thereof, the apparatus comprising a shell (60), the machine core (70), and a massage head module (11). The machine core (70) is mounted inside the shell (60); the massage head module (11) is located outside the shell (60); the machine core (70) comprises a power source (21), a universal coupling (40), and a crank-slider mechanism (50); the universal coupling (40) has an input member and an output member; the crank-slider mechanism (50) has a crank (4) and a motion shaft (7); the massage head module (11) is mounted in front of the motion shaft (7); the power source (21) drives the input member to rotate around a first rotation axis; the output member drives the crank (4) to rotate around a second rotation axis; the crank (4) drives the motion shaft (7) to move in a linear reciprocating motion along a first axis; and an acute included angle is formed between the first rotation axis and the second rotation axis. The rotation power from the power source (21) is output after the angle thereof is changed by means of the universal coupling (40), and the output rotation power is converted into a linear reciprocating motion of the motion shaft (7) by means of the crank-slider mechanism (50), so as to achieve linear reciprocating driving for the massage head module (11).

Description

Reciprocating muscle relaxation equipment and its movement

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on September 30, 2019, the application number is 201910944059.9 (the application name is "Reciprocating muscle relaxation equipment and its movement"), the entire content of which is incorporated by reference In this application.

Technical field

The application belongs to the technical field of personal health care equipment, and more specifically, relates to a reciprocating muscle relaxation device and its movement.

Background technique

Reciprocating muscle relaxation equipment (such as muscle fascia relaxation massage gun, English name: FasciaGun) is a high-frequency impact physiotherapy tool for relaxation. The reciprocating relaxation equipment can generate 2000-3000 vibrations per minute. The massage head module impacts the target part of the body to help the muscles and soft tissues relax and recover, and promote blood circulation; at the same time, it can effectively dissipate the body’s damage due to exercise, work, and life. The large amount of creatine produced by fatigue has a very good effect of relieving body fatigue; its high-frequency oscillation effect can penetrate deep skeletal muscles, so that skeletal muscles can relax instantly, and the meridian nerves and blood vessels can be smoothed instantaneously. The reciprocating relaxation device usually includes a massage head module and a reciprocating movement that drives the gun head to vibrate at a high speed.

Summary of the invention

technical problem

The purpose of this application is to provide a reciprocating muscle relaxation device and its movement, including but not limited to solving the technical problem of linear reciprocating drive of the massage head module by the reciprocating movement movement.

The solution to the problem

Technical solutions

In order to solve the above technical problems, the technical solution adopted in the embodiments of the present application is to provide a reciprocating muscle relaxation device, including a casing, a movement and a massage head module, the movement being installed inside the casing , The massage head module is located outside the housing, and the movement includes a power source, a universal coupling that can realize variable-angle power transmission, and a crank-slider mechanism that can convert rotary motion into linear reciprocating motion , The universal joint has an input member for receiving power and an output member for outputting power, the crank slider mechanism has a crank for performing the rotary motion and a motion shaft for performing the linear reciprocating motion, the massage head The module is installed at the front of the moving shaft, the power source drives the input member to rotate around a first axis of rotation, the output member drives the crank to rotate around a second axis of rotation, and the crank drives the movement The shaft reciprocates linearly along a first axis, the first rotation axis and the second rotation axis have an acute angle, the first rotation axis and the first axis have an acute angle, the second rotation The axis is perpendicular to the first axis. The power source is a combination of a motor, a motor and a reduction mechanism, or other structures that can output rotational power.

In one embodiment, the casing includes a casing and a handle arranged on the lower side of the casing, the casing is arranged horizontally, the handle is arranged obliquely with respect to the casing, and the power source is arranged at the In the interior of the handle, the crank-slider mechanism is provided in the interior of the casing.

In one embodiment, the handle is rotatably connected with the casing to be able to rotate around the second rotation axis, and the rotation movement of the handle is restricted by a locking mechanism, and the locking mechanism has a locked state and an unlocked state In the locked state, the handle is locked and fixed relative to the casing; in the unlocked state, the lock is released.

In one embodiment, the locking mechanism includes a rotation stopper, a driving member, and an elastic member. The rotation stopper is movably arranged in the sliding cavity of the casing, and the rear part of the rotation stopper is connected to the The elastic member is connected, the driving member is linked with the rotation preventing member, the handle has at least one rotation preventing groove, and in the locked state, the front part of the rotation preventing member is locked into the rotation preventing groove; State, the anti-rotation member exits the anti-rotation groove. The anti-rotation groove can be directly arranged on the handle or indirectly arranged on the handle.

In one embodiment, the universal joint includes an upper rotating bracket, a lower rotating bracket, and a rotating block, the upper rotating bracket has an upwardly extending upper mounting shaft, and the lower rotating bracket has a downwardly extending lower mounting shaft. Shaft, the lower mounting shaft is the input member, the upper mounting shaft is the output member, the upper mounting shaft is fixed to the crank, the lower mounting shaft is fixed to the power source, and the rotating The block is hinged with the upper rotating support through an upper rotating shaft, and the rotating block is hinged with the lower rotating support through a lower rotating shaft, and the axis of the upper rotating shaft is perpendicular to the axis of the lower rotating shaft.

In an embodiment, a lower bracket is fixed inside the handle, the power source is fixed to the lower bracket, the lower bracket is fixed to the upper bracket and encloses an installation space, and the universal coupling is installed in In the installation space, the handle, the power source, the lower bracket, the upper bracket, and the universal coupling constitute a handle module, a base is fixed inside the casing, and the handle module is suspended on the base Below, the upper bracket is rotatably connected with the base. Through the rotation connection of the upper bracket and the base, the rotation connection of the handle, the handle module and the casing is realized. The anti-rotation groove can be provided on the upper bracket, and since the upper bracket is fixed with the handle, it is equivalent to that the anti-rotation groove is indirectly provided on the handle.

In one embodiment, the side of the base facing the upper bracket has an annular matching wall, the upper bracket correspondingly has an annular matching groove, the matching wall is matched with the matching groove, the The axis of the matching wall and the matching groove is the second rotation axis.

In one embodiment, a shaft sleeve is sleeved on the outside of the moving shaft, and a soft rubber shock-absorbing sleeve is sleeved on the outer portion of the shaft sleeve, and the shock-absorbing sleeve is fixed to the housing. Through the shock-absorbing sleeve, the effect of shock absorption and noise reduction is achieved.

The embodiment of the present application also provides a movement of a reciprocating muscle relaxation device, including a motor, a universal coupling capable of realizing variable-angle power transmission, and a crank-slider mechanism capable of converting rotary motion into linear reciprocating motion. The universal joint has an input member for receiving rotational power and an output member for outputting rotational power, the crank-slider mechanism has a crank for performing the rotational motion and a motion shaft for performing the linear reciprocating motion, the motor and The input member fixes and drives the input member to rotate about a first axis of rotation, the output member is fixed to the crank and drives the crank to rotate about a second axis of rotation, and the crank drives the moving shaft along the first axis of rotation. The axis reciprocates linearly, the first rotation axis and the second rotation axis have an acute angle, the first rotation axis and the first axis have an acute angle, the second rotation axis and the The first axis is vertical.

In one embodiment, the universal joint includes an upper rotating bracket, a lower rotating bracket, and a rotating block, the upper rotating bracket has an upwardly extending upper mounting shaft, and the lower rotating bracket has a downwardly extending lower mounting shaft. Shaft, the lower mounting shaft is the input member, the upper mounting shaft is the output member, the upper mounting shaft is fixed to the crank, the lower mounting shaft is fixed to the power source, and the rotating The block is hinged with the upper rotating support through an upper rotating shaft, and the rotating block is hinged with the lower rotating support through a lower rotating shaft, and the axis of the upper rotating shaft is perpendicular to the axis of the lower rotating shaft. The axis of the upper shaft and the axis of the lower shaft may intersect perpendicularly.

The beneficial effects of the invention

Beneficial effect

The beneficial effects of the reciprocating muscle relaxation device and its movement provided by the embodiments of the present application are as follows:

1) The rotation power output by the power source is output after changing the angle through the universal joint, and the output rotation power is converted into the linear reciprocating motion of the motion shaft through the crank slider mechanism, thereby realizing the linear reciprocating drive of the massage head module.

2) The handle can be rotated relative to the casing, so that by adjusting the position of the handle, the relaxation device can be applied to different body parts to be impacted and beaten.

Brief description of the drawings

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments or exemplary technical descriptions. Obviously, the accompanying drawings in the following description are only of the present application. For some embodiments, those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

Figure 1 is a perspective exploded view of the reciprocating muscle relaxation device of this embodiment;

Figure 2 is a perspective view of the reciprocating muscle relaxation device of this embodiment;

Figure 3 is a cross-sectional view of the handle of the reciprocating muscle relaxation device of this embodiment before rotating;

4 is a cross-sectional view of the handle of the reciprocating muscle relaxation device of this embodiment after rotation;

Figure 5 is a three-dimensional structural view of the universal coupling, upper bracket, base and rotating cover of the reciprocating muscle relaxation device of this embodiment;

Fig. 6 is a partial enlarged view of the point indicated by P in Fig. 3.

Invention embodiment

Embodiments of the present invention

In order to make the purpose, technical solutions, and advantages of this application clearer, the following further describes the application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application.

It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, and are only for ease of description, rather than indicating or It implies that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the application. For those of ordinary skill in the art, the specific meaning of the above terms can be understood according to the specific circumstances. . The terms "first" and "second" are only used for ease of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" means two or more than two, unless otherwise specifically defined.

As shown in FIGS. 1 to 6, a reciprocating muscle relaxation device includes a housing 60, a movement 70 and a massage head module 11. The movement 70 is installed inside the casing 60, and the massage head module 11 is located outside the movement 70. The movement 70 drives the massage head module 11 to make a linear reciprocating movement along the first axis to achieve impact and beating on body parts. The movement 70 includes a power source 2, a power source 21, a universal joint 40 and a crank slider mechanism 50. The power source 2 supplies power to the power source 21. The power source 21 can provide rotational power. The universal joint 40 can realize variable-angle power transmission, and has an input member capable of receiving rotational power and an output member capable of outputting rotational power. The crank-slider mechanism 50 is capable of converting rotary motion into linear reciprocating motion, and has a crank 4 capable of rotating motion and a motion shaft 7 capable of linear reciprocating motion.

The power source 21 is connected to the input member of the universal joint 40 and drives the input member to rotate around the first axis of rotation. The output member of the universal joint 40 is connected to the crank 4 and drives the crank 4 to rotate around the second axis of rotation. The crank 4 Drive the moving shaft 7 to reciprocate linearly along the first axis, and the massage head module 11 is installed at the front of the moving shaft 7. The first axis may be perpendicular to the body part to be impacted and beaten, the first rotation axis may be inclined with respect to the first axis, and the second rotation axis and the first rotation axis may have an acute angle. The second axis of rotation may be perpendicular to the first axis.

Further, the housing 60 may include a housing 1 and a handle 22, the handle 22 is convenient for a user to hold, and is installed on the lower side of the housing 1. The casing 1 can be arranged transversely along the first axis, and the handle 22 can be arranged obliquely relative to the casing 1, so that the handle 22 and the casing 1 form an acute angle. The power source 2 and the slider crank mechanism 50 may be arranged inside the casing 1, and the power source 21 may be arranged inside the handle 22.

Further, the handle 22 can rotate about the second rotation axis relative to the casing 1. The handle 22 has at least one rotational position relative to the casing 1. In any rotating position, the handle 22 is positioned by the locking mechanism 80. The locking mechanism 80 has a locked state and an unlocked state. During the rotation, the locking mechanism 80 unlocks the handle 22 so that the handle 22 can rotate relative to the casing 1; after the rotation is in place, the locking mechanism 80 switches to the locked state, and the lock The stop mechanism 80 locks the handle 22 so that the handle 22 cannot rotate relative to the casing 1.

As shown in FIGS. 1 to 6, a reciprocating muscle relaxation device includes a housing 60, a massage head module 11 and a movement 70. The massage head module 11 is located outside the housing 60, the movement 70 is installed inside the housing 60, and the movement 70 drives the massage head module 11 to make a linear reciprocating movement along the first axis at a certain frequency.

The movement 70 includes a battery 2, a motor 21, a universal joint 40 and a crank slider mechanism 50. The battery 2 supplies power to the motor 21. The motor 21 has a motor shaft 37 that outputs rotational power through the motor shaft. The universal joint 40 includes a lower rotating bracket 19, a rotating block 18 and an upper rotating bracket 17. The lower rotating bracket 19 includes a lower mounting shaft 24 and a lower support 25. The lower mounting shaft 24 extends downward from the bottom of the lower support 25. The lower support 25 is roughly U-shaped. The lower support 25 has a pair of lower supports extending toward each other. Revolving shaft 26. The upper rotating bracket 17 includes an upper mounting shaft 29 and an upper support 30. The upper mounting shaft 29 extends upward from the top of the upper support 30. The upper support 30 is roughly U-shaped. The upper support 30 has a pair of upper rotating shafts extending opposite to each other. 31. The two lower shafts 26 are coaxial, and the two upper shafts 31 are coaxial. The axis of the upper shaft 31 and the axis of the lower shaft 26 can intersect and be perpendicular. The rotating block 18 includes a pair of upper shaft holes 28 corresponding to the upper shaft 31 and a pair of lower shaft holes 27 corresponding to the lower shaft 26. The two upper shafts 31 are respectively matched with the two upper shaft holes 28, and the two lower shafts 26 are respectively engaged with The two lower shaft holes 27 cooperate, so that the upper rotating bracket 17 and the lower rotating bracket 19 are hinged by the rotating block 18 and the upper and lower rotating brackets can rotate relative to each other, thereby forming a universal joint that can realize variable-angle power transmission . The lower mounting shaft 24 of the lower rotating bracket 19 can receive rotational power. It has a matching hole 36, which is tightly fitted with the motor shaft 37, so that the motor shaft 37 can drive the lower rotating bracket 19 to rotate around the first axis of rotation. The axis of rotation is the axis of the motor shaft and the lower mounting shaft. The upper mounting shaft 29 of the upper rotating bracket 17 can output rotational power. The axis of the upper mounting shaft 29 can be perpendicular to the axis of the upper rotating shaft 31, the axis of the lower mounting shaft 24 can be perpendicular to the axis of the lower rotating shaft 26, and the angle between the axis of the upper mounting shaft 29 and the axis of the lower mounting shaft 24 can be an acute angle .

The crank slider mechanism 50 includes a crank 4, a moving shaft 7, and a connecting rod 5 capable of transmitting the power of the crank 4 to the moving shaft 7. The crank 4 has opposite upper and lower surfaces. The lower surface has a matching hole 35 which is tightly fitted with the upper mounting shaft 29 of the upper rotating bracket 17 so that the upper rotating bracket 17 can drive the crank 4 to rotate around a second rotation axis, which is the upper mounting shaft 29的轴。 The axis. The upper surface of the crank 4 has an eccentric shaft 34 extending upward, and the axis of the eccentric shaft 34 is parallel to the axis of the upper mounting shaft 29. The connecting rod 5 has a first front part and a first rear part opposite to each other. The eccentric shaft 34 is hinged to the first rear part through a bearing 23; the first front part is hinged to the adapter frame 6 through another bearing 23, and the adapter frame 6 is fixed. At the rear of the moving shaft 7, the axes of the two bearings 23 are parallel and both are parallel to the axis of the upper mounting shaft 29.

A shaft sleeve 8 is sleeved on the outside of the moving shaft 7, a shaft sleeve seat 9 is sleeved on the outside of the shaft sleeve 8, and a soft rubber shock-absorbing sleeve 10 is sleeved on the outer portion of the shaft sleeve seat 9, and the shock-absorbing sleeve 10 is fixed to the housing 60. The shaft sleeve 8 has a linear track 38 penetrating back and forth along the first axis, and the moving shaft 7 is matched with the linear track 38.

The housing 60 may include a housing 1 and a handle 22, and the handle 22 is located on the lower side of the housing 1, which is convenient for a user to hold. The casing 1 may be substantially cylindrical, which is arranged transversely along the first axis. The handle 22 may be substantially cylindrical, which is arranged obliquely with respect to the casing 1, and the axis of the handle 22 may have an acute angle with the axis of the casing 1. The motor 21 may be installed inside the handle 22, and the crank slider mechanism 50 and the battery 2 may be installed inside the casing 1.

A lower bracket 20 is installed inside the handle 22 by fasteners, the motor 21 is fixed to the lower bracket 20, the lower bracket 20 and the upper bracket 16 are fixed by fasteners, and an installation space is formed between the two, a universal coupling 40 Install in the installation space. The upper mounting shaft 29 of the universal joint extends upward from the upper bracket 16 and then is fixed to the crank 4, and the lower mounting shaft 24 of the universal joint extends downward from the lower bracket 20 and is fixed to the motor shaft 37. The handle 22, the lower bracket 20, the universal coupling 40 and the upper bracket 16 are assembled to form a handle module. The upper mounting shaft 29 of the universal joint can be fixed to the inner ring of the bearing 39, and the outer ring of the bearing 39 can be fixed to the upper bracket 16, and the axis of the bearing 39 is the second axis of rotation. The lower mounting shaft 24 of the universal joint can be fixed to the inner ring of the bearing 41, and the outer ring of the bearing 41 can be fixed to the lower bracket 20. The axis of the bearing 41 is the first rotation axis.

The upper bracket 16 and the lower bracket 20 are fixedly connected to form an integral bracket, through which the universal joint 40 and the motor 21 are mounted on the handle 22, and the angle of the universal joint 40 can be restricted. The upper bracket can be fixedly connected with the handle through the upper bracket, the silicone block and the screws. The lower bracket can be fixed on the end surface of the motor through the lower bracket, silicone block and screws.

In an improved structure, the handle module can rotate around the second rotation axis, and after being rotated in place, the handle 22 is locked by the locking mechanism 80. The locking mechanism 80 has an unlocked state and a locked state. In the locked state, the handle 22 is locked and fixed relative to the casing 1; in the unlocked state, the handle 22 can rotate relative to the casing 1. The upper surface of the upper bracket 16 has an annular matching groove 32. A base 15 is provided above the upper bracket 16. The base 15 is fixed to the inside of the casing 1 by fasteners. The side of the base 15 facing the upper bracket 16 is provided with a ring-shaped fitting around the second axis of rotation. The wall 33, the matching wall 33 is matched with the matching groove 32, and the axis of the matching wall and the matching groove is the second rotation axis. In order to facilitate the rotation of the handle module, the facing surface of the upper bracket 16 and the base 15 may be a spherical arc surface. A rotating cover 3 is provided above the base 15. The rotating cover 3 is fixed to the upper bracket 16 and the entire handle module is suspended below the base 15, and the handle module can rotate relative to the base 15 about a second rotation axis.

The locking mechanism 80 includes an elastic member 12, a rotation preventing member 13 and a driving member 14. The bottom of the casing 1 is provided with a linear sliding cavity 42 in which the anti-rotation member 13 is slidably mounted. The rear portion of the anti-rotation member 13 is connected with the elastic member 12, and the driving member 14 and the anti-rotation member 13 are linked. The elastic member 12 is like a spring. The upper bracket 16 has at least one rotation-stop groove 43, and each rotation-stop groove 43 corresponds to a rotation position of the handle module. In the locked state, under the action of the elastic force of the elastic member 12, the front part of the anti-rotation member 13 protrudes from the sliding cavity 42 and then is locked into the anti-rotation groove 43, so that the handle module is relatively fixed to the casing 1 When the lock needs to be unlocked, the driving member 14 is moved backwards to overcome the elastic force of the elastic member 12, so that the front part of the anti-rotation member 13 exits the anti-rotation groove 43, and the handle module can continue to rotate relative to the casing 1.

The above content is a further detailed description of the present invention in conjunction with specific implementations, and it cannot be considered that the specific implementations of the present invention are limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

A reciprocating muscle relaxation device, which is characterized by comprising a housing, a movement and a massage head module, the movement is installed inside the housing, and the massage head module is located outside the housing , The movement includes a power source, a universal joint that can realize variable-angle power transmission, and a crank-slider mechanism that can convert rotary motion into linear reciprocating motion, and the universal joint has an input that receives power And an output member for outputting power, the crank-slider mechanism has a crank for performing the rotary motion and a motion shaft for performing the linear reciprocating motion, the massage head module is installed at the front of the motion shaft, the The power source drives the input member to rotate about a first axis of rotation, the output member drives the crank to rotate about a second axis of rotation, and the crank drives the moving shaft to make a linear reciprocating motion along the first axis. The rotation axis and the second rotation axis have an acute angle, the first rotation axis and the first axis have an acute angle, and the second rotation axis is perpendicular to the first axis.
The reciprocating muscle relaxation device according to claim 1, wherein the housing includes a housing and a handle provided on the lower side of the housing, the housing is arranged horizontally, and the handle is opposite to the machine. The casing is arranged obliquely, the power source is arranged inside the handle, and the crank-slider mechanism is arranged inside the casing.
3. The reciprocating muscle relaxation device according to claim 2, wherein the handle is rotatably connected with the casing to be able to rotate around the second rotation axis, and the rotation movement of the handle is restricted by a locking mechanism, The locking mechanism has a locked state and an unlocked state. In the locked state, the handle is locked and fixed relative to the casing; in the unlocked state, the lock is released.
The reciprocating muscle relaxation device according to claim 3, wherein the locking mechanism comprises a rotation stopper, a driving part and an elastic part, and the rotation stopper is movably arranged in the sliding cavity of the casing, The rear part of the anti-rotation member is connected with the elastic member, the driving member is linked with the anti-rotation member, the handle has at least one anti-rotation groove, and in the locked state, the front part of the anti-rotation member is locked Into the anti-rotation groove; in the unlocked state, the anti-rotation member exits the anti-rotation groove.
The reciprocating muscle relaxation device according to claim 3, wherein the universal coupling includes an upper rotating bracket, a lower rotating bracket and a rotating block, the upper rotating bracket has an upwardly extending upper mounting shaft, so The lower rotating bracket has a lower mounting shaft extending downward, the lower mounting shaft is the input member, the upper mounting shaft is the output member, the upper mounting shaft is fixed to the crank, and the lower mounting shaft The shaft is fixed to the power source, the rotating block is hinged with the upper rotating bracket through an upper rotating shaft, the rotating block is hinged with the lower rotating bracket via a lower rotating shaft, and the axis of the upper rotating shaft is perpendicular to the axis of the lower rotating shaft .
The reciprocating muscle relaxation device according to claim 3, wherein a lower bracket is fixed inside the handle, the power source is fixed with the lower bracket, and the lower bracket is fixed with the upper bracket and installed around it. The universal joint is installed in the installation space, the handle, the power source, the lower bracket, the upper bracket and the universal joint form a handle module, and a base is fixed inside the casing, The handle module is suspended below the base, and the upper bracket is rotatably connected with the base.
The reciprocating muscle relaxation device according to claim 6, wherein the side of the base facing the upper bracket has an annular matching wall, and the upper bracket correspondingly has an annular matching groove, and the The matching wall is matched with the matching groove, and the axis of the matching wall and the matching groove is the second rotation axis.
The reciprocating muscle relaxation device according to claim 1, wherein the outer part of the motion shaft is sleeved with a shaft sleeve, and the outer part of the shaft sleeve is sleeved with a soft rubber shock-absorbing sleeve, and the shock-absorbing sleeve and the The housing is fixed.
A movement of a reciprocating muscle relaxation device, which is characterized in that it comprises a motor, a universal coupling capable of realizing variable-angle power transmission, and a crank-slider mechanism capable of converting rotary motion into linear reciprocating motion. The coupling has an input member for receiving rotational power and an output member for outputting rotational power, the crank-slider mechanism has a crank for performing the rotational motion and a motion shaft for performing the linear reciprocating motion, the motor and the input The input member is fixed and drives the input member to rotate around the first axis of rotation, the output member is fixed to the crank and drives the crank to rotate around the second axis of rotation, and the crank drives the motion shaft to make a straight line along the first axis In reciprocating motion, the first rotation axis and the second rotation axis have an acute angle, the first rotation axis and the first axis have an acute angle, the second rotation axis and the first axis vertical.
The movement of the reciprocating muscle relaxation device according to claim 9, wherein the universal coupling includes an upper rotating bracket, a lower rotating bracket, and a rotating block, and the upper rotating bracket has an upwardly extending upper mounting Shaft, the lower rotating bracket has a lower mounting shaft extending downward, the lower mounting shaft is the input member, the upper mounting shaft is the output member, the upper mounting shaft is fixed to the crank, so The lower mounting shaft is fixed with the power source, the rotating block is hinged with the upper rotating bracket through an upper rotating shaft, the rotating block is hinged with the lower rotating bracket via a lower rotating shaft, the axis of the upper rotating shaft and the lower rotating shaft The axis is vertical.