Massage device

Abstract

A massage device for linearly massaging a user's body at least in its longitudinal direction by a massage head is configured to move a massage element toward the massage head by fluctuations in air pressure within an air chamber when a drive element is moved from a first position to a second position, and the stroke center position of the reciprocating movement of the driving element between the first position and the second position is configured to be variable. In the present invention, when a massage operation is performed while the massage head is pushed against the body of a user, the stroke amount of the driving element varies according to the thrust applied to the massage device by the user, thereby making it possible to control the impact force of the massage device during the massage operation.

Description

Technical Field

[0001] The present invention relates to the field of massage equipment, in particular to a massage device. Background Art

[0002] In a massage device that drives a massage element by a gas spring effect, the return speed of the massage element or the return amount of the massage element is not always constant due to differences in massage operations (e.g., massaging different parts of the user's body). As the hardness of the user's body increases, the massage reaction force acting on the massage element becomes larger, and as the hardness of the user's body becomes softer, the massage reaction force becomes smaller, and the return speed and return amount of the massage element may change due to the massage reaction force. Therefore, when the return speed or return amount of the massage element changes, the distance between the massage element and the driving element changes, and the impact energy transmitted from the massage element to the massage head also changes. Summary of the invention

[0003] In order to overcome the shortcomings of the existing technology, the present invention provides a massage device that can perform reasonable massage operations, so that during the massage operation, when the tip of the massage head is pushed toward or away from the user's body, the stroke of the driving element will change according to the change of the thrust applied by the user to the massage device, thereby controlling the impact force in the massage operation.

[0004] The technical solution of the present invention is as follows:

[0005] A massage device drives a massage head linearly at least in a longitudinal direction of the massage head and performs a massage operation on a user's body. The massage device includes a main housing;

[0006] A cylinder, which is disposed in the main housing and extends along the longitudinal direction of the massage head;

[0007] A massage element, which is linearly driven in the cylinder along the longitudinal direction of the massage head and is alternately connected with the massage head;

[0008] a drive element slidably disposed in the cylinder for moving the massage element;

[0009] and a driving device for driving the driving element.

[0010] The driving element is disposed in the cylinder so that it can reciprocate along the longitudinal axis of the cylinder between a first position (away from the massage head) and a second position (close to the massage head) in the cylinder. When the driving element moves from the first position to the second position, the driving element moves the massage element toward the massage head through the gas spring effect and causes the massage element to be alternately connected with the massage head. In addition, the stroke center position of the reciprocating driving element is configured to be variable.

[0011] Further, the stroke length is the distance between the first position and the second position. The stroke center position is located between the first position and the second position and is equidistant from both. Further, the first position and the second position move due to the movement of the stroke center position. The stroke center position can be changed by moving a portion of the drive device.

[0012] According to the present invention, since the stroke center position of the driving element reciprocating between the first position and the second position is variable, a massage device capable of performing a rationalized massage operation according to different operating conditions is provided. For example, in a massage device constructed by the gas spring effect of an air chamber, the characteristics of the gas spring effect are changed by changing the distance between the driving element and the massage element based on the hardness of the user's body. Specifically, if the user's body is harder, the stroke center position of the driving element is moved to a position away from the massage head, and if the user's body is softer, the stroke center position of the driving element is moved to a position close to the massage head. By controlling the characteristics of the gas spring effect, changes in impact energy based on the hardness of the user's body are suppressed. Therefore, the massage operation is properly performed.

[0013] Further, when starting the massage operation, in order to actively move the stationary massage element, the stroke center position of the driving element is moved to a position close to the massage head. Relatively, after starting the massage operation, the stroke center position of the driving element can be moved to a position away from the massage head.

[0014] According to another aspect of massage device of the present invention, massage device comprises a switch device that is used to change the stroke center position. In addition, changing the stroke center position by the switch device can be carried out in a step-by-step manner or without the step-by-step manner.

[0015] According to this aspect, the stroke center position of the reciprocating motion of the drive element is changed by the switching device.

[0016] According to another aspect of the massage device of the present invention, the switch device is configured to be operable by a user.

[0017] According to this aspect, since the switch device can be operated by the user, the user can change the stroke center position of the reciprocating motion of the drive member according to the operation.

[0018] According to another aspect of the massage device of the present invention, the massage device comprises a control panel, which controls the switch device. In addition, the control panel is used to change the stroke center position by controlling the switch device.

[0019] According to this aspect, since the control board controls the switch device and changes the stroke center position, the stroke center position is automatically changed.

[0020] According to another aspect of the massage device of the present invention, the massage device includes a first sensor that measures the reaction force caused by the massage operation of the massage head. In addition, the control board is used to control the switch device and change the stroke center position according to the measurement result of the first sensor.

[0021] According to this aspect, the control panel controls the switch device according to the reaction force caused by the massage operation of the massage head. Therefore, the stroke center position of the reciprocating motion of the driving element is automatically changed according to the level of the reaction force.

[0022] According to another aspect of the massage device of the present invention, the massage device includes a second sensor that measures the position of the massage head. In addition, the control board is used to control the switch device and change the stroke center position according to the measurement result of the second sensor. Further, the second sensor can directly detect the position of the massage head, or detect the position of the massage head by detecting the position of the massage element.

[0023] According to this aspect, the control panel controls the switch device according to the position of the massage head. Therefore, the stroke center position of the reciprocating motion of the driving element automatically changes according to the position of the massage head.

[0024] According to another aspect of the massage device of the present invention, the massage device includes a third sensor that measures the vibration caused on the main housing. In addition, the control board is used to control the switch device and change the stroke center position according to the measurement result of the third sensor.

[0025] According to this aspect, the control board controls the switch device according to the vibration level caused on the main housing. Therefore, the stroke center position of the reciprocating motion of the driving element is automatically changed according to the vibration caused on the main housing.

[0026] According to another aspect of the massage device of the present invention, the massage device includes a fourth sensor that measures a parameter applied to the drive device, the parameter indicating a load state of the massage head. In addition, the control board is used to control the switch device and change the stroke center position according to the measurement result of the fourth sensor. Further, the load state indicated by the parameter corresponds to the current of the massage device or the heating of the motor.

[0027] According to this aspect, the control panel controls the switch device according to the load state of the massage device. Therefore, the stroke center position of the reciprocating motion of the driving element is automatically changed according to the load state of the massage device.

[0028] According to another aspect of the massage device of the present invention, the driving device includes a motor and a crank mechanism driven to rotate by the motor, and the motor is electrically connected to a battery. The crank mechanism includes an eccentric flywheel with an eccentric pin and a swinging component swingably connected to the eccentric pin, and the eccentric flywheel is driven to rotate by the motor. The massage device also includes a connecting rod and a control component, the connecting rod connecting the swinging component and the driving element, one end of the connecting rod is swingably connected to the swinging component, and the other end is swingably connected to the driving element; one end of the control component has a control slot and is swingably connected to the swinging component, and the other end is swingably connected to the switching component on the main housing. Further, the stroke center position is changed by changing the position of the switching component. In addition, the position of the switching component can be configured to be changeable by the user.

[0029] According to another aspect of the massage device of the present invention, when the stroke center position changes, the stroke length of the driving element changes.

[0030] According to this aspect, the stroke length of the driving element changes due to the change in the position of the driving element. In this case, when the stroke center position moves toward the massage head, the stroke length becomes shorter, and when the stroke center position moves away from the massage head, the stroke length becomes longer. Therefore, the massage device is properly driven according to the operation.

[0031] According to another aspect of the massage device of the present invention, the massage device includes a connecting rod and a crank mechanism connected to the connecting rod and driving a driving element, wherein the connecting rod is connected to the driving element. The driving element moves from a bottom dead point farthest from the massage head to a top dead point closest to the massage head, and the connecting rod is parallel to the cylinder. Further, the driving element generally corresponds to a driving element sliding in the cylinder.

[0032] At the bottom dead point corresponding to 0 degrees of crank angle and the top dead point corresponding to 180 degrees of crank angle, the speed of the driving element in its moving direction becomes zero. That is, it is desirable to drive the massage element toward the massage head when the driving element moves from the bottom dead point to the top dead point. For example, in an air-driven massage device, since the massage element is sliding, it is desirable that the air in the cylinder is compressed to the maximum extent when the driving element moves from the bottom dead point to the top dead point. At this time, when the driving element moves from the bottom dead point to the top dead point, the connecting rod is parallel to the cylinder. Therefore, in the maximum compression state, the driving element is prevented from being applied with a force in a direction perpendicular to the moving direction of the driving element. Therefore, the friction loss between the driving element and the cylinder is reduced. Finally, the driving element is effectively driven.

[0033] According to another aspect of the massage device of the present invention, the crank angle of the crank mechanism corresponds to 0 crank angle at the bottom dead center and corresponds to 180 crank angle at the top dead center. Further, when the driving element rotates from the bottom dead center to the top dead center, at a position of about 90 crank angle degrees, the connecting rod becomes parallel to the cylinder.

[0034] In a massage device driven by a crank mechanism, the speed of the driving element toward the massage head reaches a maximum speed at a crank angle position of about 90 degrees of the crank mechanism. For example, in a massage device that uses a gas spring to hit the massage head, when the driving element moves from the bottom dead center to the top dead center, the air chamber as the gas spring is compressed to the maximum extent at a position of about 90 degrees. Therefore, it is desirable that the connecting rod becomes parallel to the cylinder at a crank angle position of about 90 degrees. In addition, about 90 degrees here refers to a range between 70 degrees and 110 degrees.

[0035] Further, according to the massage device of the present invention, when the connecting rod is parallel to the cylinder, the massage element starts to move toward the massage head. At this time, the force applied to the driving element perpendicular to the moving direction of the driving element is reduced. Therefore, the friction loss between the driving element and the cylinder is reduced. Finally, the kinetic energy of the driving element is effectively transferred to the massage element.

[0036] Further, according to the massage device of the present invention, the rotation center of the crank mechanism is arranged to be offset in a direction perpendicular to the reciprocating movement line of the driving element in the cylinder.

[0037] According to this aspect, the rotation center of the crank mechanism is offset in a direction perpendicular to the reciprocating line of the drive element. Therefore, by adjusting the offset, the connecting rod can be easily made parallel to the cylinder when the drive element moves from the bottom dead center to the top dead center.

[0038] Further, according to another aspect of the massage device of the present invention, the crank mechanism includes a rotatable eccentric flywheel and an eccentric pin eccentrically connected to the rotating shaft of the eccentric flywheel. Further, the massage device also includes a swing component and a switching component, the swing component is interposed between the eccentric pin and the connecting rod, and is swingably connected to the eccentric pin and the connecting rod respectively; one end of the switching component is swingably supported on the main housing, and the other end thereof is swingably connected to the swing component.

[0039] According to this aspect, since the swinging member is interposed between the eccentric pin and the connecting rod, when the eccentric pin rotates, the connecting portion of the swinging member and the connecting rod performs orbital motion along a substantially elliptical orbit. The major axis of the ellipse extends along the moving direction of the driving element. Therefore, the movement amount of the connecting portion in the moving direction of the driving element is greater than the movement amount of the eccentric pin in the moving direction of the driving element. In other words, the movement amount of the eccentric pin in the moving direction of the driving element is amplified and transmitted to the driving element. Therefore, the movement amount of the eccentric pin in the direction perpendicular to the moving direction of the driving element is much smaller than the movement amount of the driving element. Accordingly, the swinging angle of the connecting rod becomes smaller, thereby preventing interference between the connecting rod and the cylinder. Further, the axial length of the connecting rod can be shortened. Finally, the driving device can be arranged at a position close to the cylinder. Therefore, miniaturization of the massage device is achieved.

[0040] Further, according to another aspect of the massage device of the present invention, the massage device includes a connecting pin and a control pin, wherein the connecting pin connects the swing member and the connecting rod in a swinging manner; and the control pin connects the swing member and the control member in a swinging manner. Further, an eccentric pin is interposed between the connecting pin and the control pin in the extending direction of a line passing through the connecting pin and the control pin.

[0041] According to this aspect, each component of the crank mechanism is rationally arranged.

[0042] Therefore, an improved massage device capable of performing reasonable massage operations is provided, so that during the massage operation, when the tip of the massage head is pushed toward or away from the user's body, the stroke amount of the drive element will change according to the change of the thrust applied by the user to the massage device, thereby controlling the impact force during the massage operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a cross-sectional view of the present invention;

[0044] Figure 2 is a position comparison diagram of the driving element at the bottom dead point position, wherein the state where the stroke center position moves backward (away from the massage head) is represented by a solid line, and the state where the stroke center position moves forward (close to the massage head) is represented by a dotted line;

[0045] Figure 3 is a position comparison diagram of the driving element at the top dead point position, wherein the state where the stroke center position moves forward (close to the massage head) is represented by a solid line, and the state where the stroke center position moves backward (away from the massage head) is represented by a dotted line;

[0046] Figure 4 A partial cross-sectional view of an operating connecting rod type crank mechanism, wherein the stroke center position is moved rearward, and shows a state where the driving element moves to the bottom dead center, i.e., the last position (0 degree crank angle position);

[0047] Figure 5 for Figure 4 A partial cross-sectional view of the driving element moving from the bottom dead center to the top dead center in the state, and showing the maximum compression state of the air chamber;

[0048] Figure 6 It is a partial cross-sectional view when the driving element is at the top dead center position, at which time the driving element moves to the frontmost position (180 degree crank angle position);

[0049] Figure 7 is a partial cross-sectional view of a driving element moving from a top dead center to a bottom dead center, wherein the driving element is at a crank angle position of approximately 270 degrees;

[0050] Figure 8 A partial cross-sectional view of an operating connecting rod type crank mechanism, in which the stroke center position is moved forward, and shows a state in which the driving element moves to the bottom dead center (the last position (0 degree crank angle position));

[0051] Fig. 9 for Figure 8 A partial cross-sectional view of the driving element moving from the bottom dead center to the top dead center in the state, and showing the maximum compression state of the air chamber;

[0052] Fig.10 It is a partial cross-sectional view when the driving element is at the top dead center position, at which time the driving element moves to the frontmost position (180 degree crank angle position);

[0053] Fig.11 is a partial cross-sectional view of a driving element moving from a top dead center to a bottom dead center, wherein the driving element is at a crank angle position of approximately 270 degrees;

[0054] Fig.12 for Figure 6 Sectional view along midline 12-12;

[0055] Fig.13 for Figure 6 Sectional view along midline 13-13. DETAILED DESCRIPTION

[0056] Each of the additional features and method steps disclosed above and below may be used alone or in combination with other features and method steps to provide and manufacture improved massage devices and methods of using such massage devices and tools for use thereof. Representative inventive examples of these additional features and method steps will now be described in detail, with reference to the drawings. This detailed description is intended only to teach skilled artisans further details in order to practice the preferred aspects of the invention and is not intended to limit the scope of the invention. Therefore, the combination of features and steps disclosed in the following detailed description may not be necessary to practice the invention in the broadest sense, but rather specifically describes some representative inventive examples, which will now be described in detail with reference to the accompanying drawings.

[0057] refer to Figures 1 to 13 Here, an electric massage device is used as an example of a massage device for explanation. Figure 1 As shown, the massage device 100 is a massage device to which a massage head 110 is attached, and linearly drives the attached massage head 110 to perform a massage operation in a longitudinal direction and around the longitudinal direction of the massage head 110, thereby performing a massage operation on a user's body.

[0058] like Figure 1 As shown, the massage device 100 is mainly composed of a main housing 120 forming the outline of the massage device 100 .

[0059] For convenience of explanation, the massage head 110 side of the main housing 120 in the longitudinal direction is defined as a front side or a forward side, and the side opposite to the longitudinal direction of the massage head 110 is defined as a rear side or a rearward side.

[0060] like Figure 1 As shown, the massage head 110 is equipped with a motor 310, and the motor 310 is arranged in such a way that the motor shaft 311 thereof is aligned with the vertical direction of the massage head 110, and the vertical direction is substantially perpendicular to the longitudinal direction of the main housing 120 (the longitudinal direction of the massage head 110). The torque of the motor 310 is converted into linear motion by the crank mechanism as required, and then transmitted to the massage element 140, and the massage element 140 is rotated in the longitudinal direction ( Figure 1 The electric motor 310 is an example of a feature corresponding to the "electric motor (310)".

[0061] like Figure 1 As shown, the driving element 150 is provided as a driving member for driving the massage element 140. The driving element 150 linearly reciprocates in the cylinder 130 in the same direction as the longitudinal direction of the massage head 110. The cylinder 130 is provided as a cylindrical member and is fixedly supported on the main housing 120. The driving element 150 is an example of a feature corresponding to the "driving element (150)".

[0062] like Figure 1 As shown, the inner wall of the cylinder 130 , the driving element 150 and the massage element 140 form an air chamber 160 .

[0063] Next, refer to Figures 1 to 3 The connecting rod type crank mechanism of the linear reciprocating drive driving element 150 is explained. The connecting rod type crank mechanism is mainly composed of an eccentric flywheel 320, a swing component 330 and a control component 350, and the connecting rod type crank mechanism is arranged at the rear of the cylinder 130 (the rear of the driving element 150). The connecting rod type crank mechanism and the driving element 150 are connected by a connecting rod 340. The connecting rod type crank mechanism is an example of a feature corresponding to a "driving device". In addition, the eccentric flywheel 320 is an example of a feature corresponding to an "eccentric flywheel", the swing component 330 is an example of a feature corresponding to a "swing component", and the control component 350 is an example of a feature corresponding to a "control component".

[0064] One end of the connecting rod 340 in the axial direction is connected to the driving element 150 in a relatively rotatable manner via the driving pin 341. The eccentric pin 321 is an example of a feature corresponding to the "eccentric pin (321)".

[0065] The swing component 330 is arranged so as to extend perpendicularly to the longitudinal direction of the driving element 150. In addition, the middle area of ​​the swing component 330 is connected to the eccentric pin 321 of the eccentric flywheel 320 in a relatively rotating (swinging) manner in the extension direction. Further, one end of the swing component 330 in the extension direction is rotationally connected to the other end of the connecting rod 340 in the axial direction through the connecting pin 331.

[0066] The control component 350 has a control slot 351, and its arrangement direction is the front-to-back direction. One end of the control component 350 is connected to the other end of the swing component 330 in the extension direction in a relatively rotatable manner through the control pin 332 in the control slot 351. Further, the other end of the control component 350 is connected to the main housing 120 in a swinging manner. Therefore, the control component 350 swings to control the movement of the swing component 330. In other words, the control component 350 is set as an adjustment component, which adjusts the freedom of movement of the swing component 330 so that the connecting rod type crank mechanism performs a predetermined operation.

[0067] In the massage device 100 constructed as above, when the motor 310 is started and driven, the driving element 150 moves linearly in the cylinder 130 through the connecting rod type crank mechanism. Therefore, the air pressure in the air chamber 160 fluctuates, and the massage element 140 alternately connected to the massage head 110 moves forward through the gas spring effect.

[0068] Figures 4 to 11 The movement of the drive element 150 is shown, namely Figure 4 and Figure 8 The state in which the driving element 150 is moved and positioned at the rearmost position (hereinafter referred to as the bottom dead center) which is a crank angle position of 0 degrees (360 degrees) relative to the position of the eccentric pin 321 is shown. Figure 6 and Fig.10 The state in which the driving element 150 is moved and positioned at the frontmost position (hereinafter referred to as the top dead center) is shown, which is a crank angle position of 180 degrees relative to the position of the eccentric pin 321. The bottom dead center is an example of a feature corresponding to the "first position", and the top dead center is an example of a feature corresponding to the "second position".

[0069] The driving element 150 reciprocates between the top dead point and the bottom dead point. When the driving element 150 moves forward from the bottom dead point to the top dead point, the massage element 140 is alternately connected with the massage head 110 through the gas spring effect of the air chamber 160 and moves forward. Figure 7 and Fig.11 As shown, after the massage operation, the massage element 140 moves backward by the massage reaction force and the negative pressure generated by the decrease of the air pressure in the air chamber 160 .

[0070] In the massage device 100 that drives the massage element 140 by the gas spring effect of the air chamber 160, the maximum air compression state of the air chamber 160 is defined by the positions of the drive element 150 and the massage element 140. Figure 5 and Fig. 9 As shown, after the massage operation, the massage element 140 moves backward by the massage reaction force and the negative pressure, approaching the driving element 150 that moves forward for the next massage operation, so that the air chamber 160 reaches the maximum air compression state. The position of the driving element 150 corresponding to the maximum air compression state is generally defined as a crank angle position of about 90 degrees (within a range of 70 degrees to 110 degrees) advancing from the bottom dead center to the top dead center.

[0071] The massage reaction force acting on the massage element 140 may vary according to the type of the user's body, in particular, the hardness of the user's body. Further, the return speed or return amount of the massage element 140 may vary due to the fluctuation of this reaction force, and therefore, the distance between the drive element 150 and the massage element 140 may vary. That is, when the user's body is harder, the distance between the drive element 150 and the massage element 140 becomes shorter, and when the user's body is softer, the distance between the drive element 150 and the massage element 140 becomes longer. Therefore, the impact energy transmitted to the massage head 110 may vary according to the change in the distance between the drive element 150 and the massage element 140.

[0072] In order to suppress the fluctuation of impact energy, the massage device 100 controls the distance between the driving element 150 and the massage element 140 by changing the stroke center position of the driving element 150 in the reciprocating motion based on the hardness of the user's body. Figure 2 and Figure 3 As shown, the other end of the control member 350 is supported in a swinging manner relative to the main housing 120. That is, the control member 350 is connected to the switching pin 231 of the switching member 230, and the switching member 230 is rotatably connected to the driving shaft 221 of the driving member 220, and the driving member 220 is fixed to the main housing 120. Therefore, when the switching member 230 rotates, the switching pin 231 serves as a swing fulcrum of the control member 350, and the control member 350 rotates around the central axis of the switching pin 231. Figure 2 and Figure 3 The solid line in shows the state where the swing member 330 is moved forward and positioned by the rotation of the switching member 230. Further, Figure 2 and Figure 3 The dotted line in exemplifies the state in which the swing member 330 is moved backward and positioned by the rotation of the switching member 230 .

[0073] like Figure 2 and Figure 3 As shown, when the position of the switching pin 231 of the switching component 230 changes, the swing component 330 is controlled by the control component 350 and moves forward or backward with the eccentric pin 321 as a fulcrum. Therefore, the driving component 150 moves forward or backward through the connecting rod 340. Therefore, the stroke center position of the driving element 150 moves in the front-to-back direction (the moving direction of the driving element 150). That is, when the control pin 332 moves forward, the stroke center position of the driving element 150 moves backward, and when the control pin 332 moves backward, the stroke center position of the driving element 150 moves forward. Therefore, the swing component 330 with the eccentric pin 321 as the swing fulcrum acts as a stroke center position changing mechanism to change the stroke center position of the driving element 150. Further, Figure 2 and Figure 3 The solid line and the dotted line in FIG. 2 respectively show the state where the switching component 230 rotates about 90 degrees.

[0074] like Figure 2 and Figure 3 As shown, a driving member 220 is provided for rotationally operating a switching member 230. The switching member 230 is rotationally connected to the driving member 220 via a driving shaft 221.

[0075] The driving component 220 is composed of Figure 2 and Fig.13The control board 210 shown in FIG. 2 controls the driving component 220 according to the hardness of the user's body. To this end, a measuring device for measuring a parameter indicating the hardness of the user's body is provided in the massage device 100. The control board 210 evaluates the hardness of the user's body based on the measurement result input from the measuring device. If the user's body is harder, the control board 210 controls the driving component 220 to move the stroke center position of the driving element 150 backward. On the other hand, if the user's body is softer, the control board 210 controls the driving component 220 to move the stroke center position of the driving element 150 forward.

[0076] like Figure 1 As shown, the massage device 100 includes a massage reaction force sensor 410 for measuring the massage reaction force acting on the massage element 140 through the massage head 110, a position sensor 420 for measuring the position of the massage head 110, a vibration sensor 430 for measuring the vibration caused on the main housing 120, and a current sensor 440 for measuring the current value of the motor 310.

[0077] The massage reaction force sensor 410 is an example of a feature corresponding to the “first sensor (410)”, the position sensor 420 is an example of a feature corresponding to the “second sensor (420)”, the vibration sensor 430 is an example of a feature corresponding to the “third sensor (430)”, and the current sensor 440 is an example of a feature corresponding to the “fourth sensor (440)”.

[0078] Any of the above sensors can be used independently; on the other hand, some sensors can be used together. Further, the control board 210 is configured to adjust the rotation angle of the drive shaft 221 in a continuously variable manner. That is, the stroke center position of the drive element 150 is adjusted not only between its front position and rear position, but also at any position between the front position and the rear position. On the other hand, the stroke center position of the drive element 150 can be switched in a multi-stage manner.

[0079] If the control board 210 detects that the user's body is hard based on the result of the sensor, the control board 210 drives the driving part 220 to move the switching pin 231 of the switching part 230 forward. Therefore, the swing fulcrum of the control part 350 moves forward. Figure 2 and Figure 3 In the embodiment, the swinging member 330 rotates clockwise around the eccentric pin 321, and the driving element 150 moves backward through the connecting rod 340. That is, the stroke center position of the driving element 150 moves backward. Therefore, the distance between the driving element 150 and the massage element 140 increases.

[0080] On the other hand, if the control board 210 detects that the user's body is soft based on the result of the sensor, the control board 210 drives the driving part 220 to move the switching pin 231 of the switching part 230 backward. Therefore, the swing fulcrum of the control part 350 moves backward. Accordingly, the swing part 330 rotates counterclockwise around the eccentric pin 321, and the driving element 150 moves forward through the connecting rod 340. That is, the stroke center position of the driving element 150 moves forward. Therefore, the distance between the driving element 150 and the massage element 140 decreases.

[0081] As described above, the present embodiment moves the stroke center position of the driving element 150 based on the hardness of the user's body, thereby adjusting the distance between the driving element 150 and the massage element 140 according to the user's body. Therefore, the change in the impact energy transmitted to the massage head 110 is suppressed. That is, the gas spring characteristics of the air chamber 160 are controlled accordingly according to the hardness of the user's body, and the massage device 100 is driven in an appropriate massage executable state.

[0082] In addition, before the massage operation, in a state where no massage reaction force occurs, the driving element 150 is controlled so that its stroke center position is located at the front position of the movable area. Therefore, the massage element 140 is prevented from being unable to move backward due to the air chamber 160.

[0083] In addition, in this embodiment, the control board 210 changes the stroke center position of the driving element 150 according to the hardness of the user's body. In other words, the control board 210 automatically changes the position of the driving element 150 according to the hardness of the user's body.

[0084] The driving element 150 is driven by a connecting rod type crank mechanism. Therefore, as the stroke center position of the driving element 150 changes, the stroke length of the driving element 150 also changes.

[0085] In this embodiment, the stroke center position of the driving element 150 is automatically changed, but is not limited to this. Fig.13 As shown, the center of travel position of the drive element 150 can be changed by the user.

[0086] The correspondence between the constituent elements according to the embodiment of the present invention and the constituent elements of the present invention is as follows: In addition, the embodiment of the present invention describes a mode for carrying out the present invention, but the present invention is not limited to the configuration of the embodiment.

Claims

1. A massage device that drives a massage head linearly at least in the longitudinal direction of the massage head and performs a massage operation on a user's body, characterized in that: include: Main housing; a cylinder disposed in the main housing and extending along the longitudinal direction of the massage head; a massage element disposed in the cylinder and linearly driven along the longitudinal direction of the massage head, the massage element being alternately connected with the massage head; a driving element, which is slidably disposed in the cylinder and is used to move the massage element; an air chamber, the air chamber being located in the cylinder and between the driving element and the massage element; A driving device, which is used to drive the driving element; wherein the driving element is disposed in the cylinder so as to reciprocate between a first position and a second position along the longitudinal axis of the cylinder in the cylinder, and when the driving element moves from the first position to the second position, the driving element moves the massage element toward the massage head and enables the massage element to be alternately connected with the massage head; The reciprocating motion of the drive element relative to the cylinder has a stroke center position between a first position and a second position, and the drive element and the drive device are used to change the stroke center position.

2. The massage device according to claim 1, characterized in that: A switch device is included for changing the stroke center position.

3. The massage device according to claim 2, characterized in that: A control board for controlling the switch device is also included, and the control board is configured to change the stroke center position by controlling the switch device.

4. The massage device according to claim 3, characterized in that: The switch device includes a driving component controlled by the control board and a switching component whose position is changed by the driving of the driving component, so that the stroke center position is changed by the position change of the switching component.

5. The massage device according to claim 3, characterized in that: The control panel is configured to be operable by a user to control the switch device and change the travel center position.

6. The massage device according to claim 3, characterized in that: A first sensor is included, wherein the first sensor is used to measure the reaction force caused by the massage operation of the massage head, wherein the control board is used to control the switch device and change the stroke center position according to the measurement result of the first sensor.

7. The massage device according to claim 3, characterized in that: A second sensor is included, and the second sensor is used to measure the position of the massage head, wherein the control board is used to control the switch device and change the stroke center position according to the measurement result of the second sensor.

8. The massage device according to claim 3, characterized in that: A third sensor is included, the third sensor is used to measure the vibration caused on the main housing, wherein the control board is used to control the switch device and change the stroke center position according to the measurement result of the third sensor.

9. The massage device according to claim 3, characterized in that: A fourth sensor is included, and the fourth sensor is used to measure the current of the motor, wherein the control board is used to control the switch device and change the stroke center position according to the measurement result of the fourth sensor.

10. The massage device according to claim 1, characterized in that: The driving device comprises a motor and a crank mechanism driven by the motor, the crank mechanism comprises an eccentric flywheel having an eccentric pin, and a swinging member swingably connected to the eccentric pin, and the eccentric flywheel is driven to rotate by the motor; The massage device also includes a connecting rod and a control component. The connecting rod is used to connect the swing component and the driving element. One end of the connecting rod is swingably connected to the swing component, and the other end of the connecting rod is swingably connected to the driving element. One end of the control component has a control groove and is swingably connected to the swing component, and the other end of the control component is swingably connected to the switching component on the main shell, so that the stroke center position is changed by the position change of the switching component.

11. The massage device according to claim 10, characterized in that: When the stroke center position changes, the stroke length of the drive element changes.

12. A massage device that drives a massage head linearly at least in a longitudinal direction of the massage head and performs a massage operation on a user's body, characterized in that: include: Main housing; a cylinder disposed in the main housing and having a central axis; a massage element slidably disposed in the cylinder; a driving element, which is slidably disposed in the cylinder and is used to move the massage element; A connecting rod connected to the driving element; a crank mechanism connected to the connecting rod and used to drive the driving element; Wherein, the driving element has a bottom dead point position farthest from the massage head and a top dead point position closest to the massage head, and the connecting rod has a longitudinal axis; the cylinder, the driving element and the connecting rod are configured so that the driving element is located between the top dead point and the bottom dead point, but not at the top dead point or the bottom dead point.

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