Fascial massage device
Patent Information
- Authority / Receiving Office
- KR · KR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-02-07
- Publication Date
- 2026-08-05
Smart Images
Figure PCT00001_ABST
Abstract
Description
Technology Field
[0001] This application relates to the field of medical and healthcare equipment technology, and specifically to a myofascial massage device. Background Technology
[0002] Massage devices are common tools today that help people relax and maintain their health. For example, myofascial massage guns are excellent tools for stretching and recovery after exercise. Muscle soreness is a common problem in daily life, and anyone, whether a professional athlete or a layperson, has likely experienced it. Myofascial massage guns relieve muscle pain by massaging large muscle groups primarily through vibrations to relax the fascia. Both professional athletes and amateur fitness enthusiasts can perform effective training using myofascial massage guns. By utilizing vibration frequencies, myofascial massage guns relieve muscle spasms, increase blood flow, and significantly shorten muscle recovery time. However, currently available myofascial massage guns generally have drawbacks, such as excessive vibration and noise, poor operational stability, and the limitation of only being able to adjust the massage depth to a single setting. Since the thickness of the fascia layer varies across different body parts—head, hands, legs, buttocks, and back—the massage depth of the massage head must be adjusted to suit the specific area, but existing myofascial massage guns fail to provide this functionality.
[0003] Therefore, to resolve the problems of existing myofascial massage guns, such as the inability to adjust the movement depth of the massage head, loud noise, and instability, there is a need for a myofascial massage device that operates smoothly, produces low noise, and allows for stroke adjustment. The problem to be solved
[0004] The present application aims to provide a softly operating myofascial massage device. means of solving the problem
[0005] The purpose of the present application is achieved through the following means of solving the problem.
[0006] The present application provides a myofascial massage device comprising an actuator, a power transmission assembly, and a massage member, wherein the power transmission assembly comprises an eccentric wheel, a sliding member, and a power transmission link, the output shaft of the actuator is connected to the eccentric wheel to drive the eccentric wheel to rotate, the sliding member is installed on the eccentric wheel to rotate together with the eccentric wheel, and the sliding member is connected to the massage member through the power transmission link.
[0007] Specifically, the eccentric wheel has a sliding groove formed in a transverse direction, and the sliding member is installed within the eccentric wheel and can move relatively along the sliding groove, and the sliding member can move transversely with respect to the eccentric wheel within the sliding groove, and the relative position of the sliding member and the eccentric wheel in the longitudinal direction does not change.
[0008] In some embodiments, the power transmission assembly further comprises a control link, the output shaft of the actuator is a hollow shaft, one end of the control link is inserted into the hollow shaft and can move axially relative to the hollow shaft, and the other end of the control link is inserted into the sliding member and can move axially relative to the sliding member. In some specific embodiments, the actuator is a drive motor, the output shaft of the drive motor is a hollow shaft, and the control link is inserted into the hollow shaft.
[0009] In some embodiments, the power transmission assembly further includes a pin, and the adjustment link is inserted into the sliding member by passing through the eccentric wheel, and the sliding member has an inclined hole formed therein, and the pin is fixedly connected to one end of the adjustment link inserted into the sliding member by passing through the inclined hole.
[0010] In some embodiments, the inclined hole penetrates the sliding member in a transverse direction, and the penetration direction intersects the opening direction of the sliding groove. In some specific embodiments, the transverse penetration direction of the inclined hole is perpendicular to the opening direction of the sliding groove, and the pin is inserted so as to be perpendicular to the opening direction of the sliding groove.
[0011] In some embodiments, the inclination direction of the inclined hole intersects the axis of the adjustment link. In some specific embodiments, the cross-section of the inclined hole is in the shape of an elongated groove, and the centerline of the elongated groove intersects the axis of the adjustment link. In some specific embodiments, the inclined hole penetrates the sliding member in the transverse direction, and the penetration direction is perpendicular to the opening direction of the sliding groove, and along the cross-section perpendicular to the penetration direction, the cross-section of the inclined hole is in the shape of an elongated groove, and the centerline of the elongated groove intersects the axis of the adjustment link.
[0012] In some embodiments, the axis of the adjustment link is parallel to or overlaps with the axis of the output axis of the actuator.
[0013] In some embodiments, one end of the power transmission link is connected to the sliding member and can rotate relative to it, and the other end of the power transmission link is connected to the massage member and can rotate relative to it.
[0014] In some embodiments, a first linkage shaft is disposed on the upper end of the sliding member, and a second linkage shaft is disposed on the massage member; one end of the power transmission link is sleeved to the first linkage shaft through a bearing, and the other end of the power transmission link is sleeved to the second linkage shaft through a bearing. In some specific embodiments, an intermediate connecting bridge is included between one end and the other end of the power transmission link, and the intermediate connecting bridge is configured as a stepped transition structure having two connecting parts of different heights.
[0015] In some embodiments, a vibration reducing member is disposed within the sliding groove between the sliding member and the eccentric wheel. In some specific embodiments, the vibration reducing member is a vibration reducing spring disposed transversely between the outer wall of the sliding member and the inner wall of the sliding groove.
[0016] In some embodiments, a positioning pin is disposed on the upper side of the sliding member, and the positioning pin is fixed longitudinally to the eccentric wheel.
[0017] In some embodiments, a pin insertion groove arranged transversely is formed on the upper part of the sliding member, and the positioning pin penetrates and adheres to the pin insertion groove along the opening direction of the pin insertion groove.
[0018] In some embodiments, one or two pin insertion grooves may be formed, and in a specific embodiment, one pin insertion groove is formed at each of the two shoulder positions on the upper part of the sliding member, and the positioning pin is fixed to the eccentric wheel in the longitudinal direction, and the direction of formation of the pin insertion groove coincides with the opening direction of the sliding groove, and a positioning hole is formed that penetrates the eccentric wheel in the transverse direction, and the positioning pin is inserted into the positioning hole and penetrates and adheres to the pin insertion groove along the opening direction of the pin insertion groove, thereby fixing the relative position of the sliding member and the eccentric wheel in the longitudinal direction.
[0019] In some embodiments, the fascia massage device further comprises a control assembly, wherein the control assembly comprises a first control knob, the first control knob is connected to one end of the control link, the control link and the first control knob are fixed relative to each other in the longitudinal direction, the control link can rotate relative to the first control knob, the first control knob is fixed relative to each other in the circumferential direction, and the axial position is adjustable.
[0020] In some specific embodiments, the first adjustment knob is connected to one end of the adjustment link through a bearing. In some specific embodiments, one end of the adjustment link is inserted into the hollow shaft of the drive motor, penetrates the drive motor, is inserted into the inner ring of the bearing, is connected to the first adjustment knob through the bearing, achieves axial fixation with the inner ring of the bearing through an adjustment link screw, and the outer ring of the bearing is fixedly connected to the first adjustment knob.
[0021] In some embodiments, the first adjustment knob is provided with a position limiting structure that engages with and is fixed to the housing. In some specific embodiments, the position limiting structure on the first adjustment knob has a positioning projection positioned on the outer circumference of the first adjustment knob and a positioning groove that engages with it positioned in the housing. The two engage to fix the first adjustment knob circumferentially relative to the housing so that it does not rotate, that is, the first adjustment knob is restricted to only vertical movement along the center of the actuator.
[0022] In some embodiments, the adjustment assembly further includes a second adjustment knob, the second adjustment knob is threaded to the first adjustment knob, and may cause a relative displacement of the first adjustment knob in the longitudinal direction through the second adjustment knob. In some specific embodiments, the second adjustment knob is mounted on the housing and, specifically, is exposed to the outside of the housing so that a user can adjust and operate it, and the user rotates the second adjustment knob to adjust the massage stroke.
[0023] The terms "longitudinal" and "transverse" above are used for clarity and convenience and should not be interpreted in a restrictive sense. Generally, the longitudinal direction coincides with the axial direction of the output shaft of the actuator, and the transverse direction coincides with the radial direction perpendicular to the shaft.
[0024] The above massage member acts on the human body as a massage vibration output terminal to implement a massage function. In some embodiments, a protective cover and vibration-reducing soft rubber may be added to the outside of the massage member to improve massage convenience.
[0025] In some embodiments, the myofascial massage device further comprises a housing, a PCBA substrate, a button, and a battery. The housing is configured in a combined form of a left shell and a right shell, the battery and the PCBA substrate are disposed in the housing, and the button is exposed outside the housing and connected to the PCBA substrate. Effects of the invention
[0026] Compared to existing technology, the present application has the following advantages.
[0027] The myofascial massage device of the present application is driven by a drive unit directly connected to an eccentric wheel, and implements a massage vibration effect by combining the lateral movement of a sliding member within the eccentric wheel with the movement of a power transmission link and a massage member, and has a simple and compact structure. Since the eccentric wheel is directly connected to the output shaft of the drive unit, it can be positioned close to the cross-section of the drive unit's output end, making operation more stable and reliable.
[0028] This application utilizes a hollow shaft actuator and installs a control link within the actuator's hollow shaft so that the center of the control assembly is at the same center position as the actuator. This eliminates vibrations and moments of inertia caused by the eccentricity between the center of the control assembly and the actuator, allowing the actuator to operate more stably with less effort, and reducing product vibration and noise. Since the center of gravity of the actuator and the center of gravity of the control assembly are at the same center during rotation, the risk of biased shaking is reduced, extending the product lifespan. By positioning the control assembly far from the actuator cross-section and saving the space increased by the control assembly, the center of gravity of the eccentricity can be infinitely close to the actuator cross-section, thereby shortening the torque between the eccentric wheel group and the actuator and reducing the actuator's power loss.
[0029] The present application enables a myofascial massage device to adjust the radial dimension between the connection center of the adjustment link and the rotation center of the actuator in both operating and non-operating states, thereby allowing the connection center of the adjustment link to move closer to or further away from the rotation center of the actuator, and thus enabling the adjustment of the movement depth of the massage member, allowing it to adapt to the user's various massage needs. Since the depth of the skin fascia layer varies by body part, the massage depth required when acting on different parts also varies; therefore, the technical solution of the present application enables the adjustment of these spatial dimensions to satisfy the need for massage depth adjustment, and is very flexible and convenient. Brief explanation of the drawing
[0030] FIG. 1 is an exploded view of the fascia massage device of the present application. FIG. 2 is a perspective view 1 of the fascia massage device of the present application. FIG. 3 is a perspective view 2 of the fascia massage device of the present application. FIG. 4 is a partial schematic diagram of the fascia massage device of the present application with the housing removed. Figure 5 is a transverse cross-sectional view of the partial structure shown in Figure 4. FIG. 6 is a longitudinal cross-sectional view 1 of a part of the structure of the fascia massage device of the present application. FIG. 7 is a longitudinal cross-sectional view 2 of the fascia massage device of the present application. FIG. 8 is a schematic diagram of the hollow shaft drive motor of the fascia massage device of the present application. FIG. 9 is an assembly diagram of the driving motor and adjustment link of the myofascial massage device of the present application. FIG. 10 is an assembly diagram of the driving motor, adjustment link, and sliding member of the myofascial massage device of the present application. Figure 11 is a cross-sectional view of the structure shown in Figure 9. Figure 12 is a cross-sectional view of the structure shown in Figure 10. FIG. 13 is a multi-angle longitudinal cross-sectional view of the power transmission assembly portion of the fascia massage device of the present application. FIG. 14 is a transverse cross-sectional view of the power transmission assembly portion of the fascia massage device of the present application. FIG. 15 is a longitudinal cross-sectional view 1 of the power transmission assembly portion of the fascia massage device of the present application. FIG. 16 is a longitudinal cross-sectional view 2 of the power transmission assembly portion of the fascia massage device of the present application. FIG. 17 is a longitudinal cross-sectional view of the structure of FIG. 16 with a positioning pin added. Specific details for implementing the invention
[0031] Exemplary embodiments of the present application are described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are illustrated in the accompanying drawings, it should be understood that the present application may be embodied in various forms and should not be construed as being limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.
[0032] It should be understood that the terms used herein are for the purpose of describing specific exemplary embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “one,” “one thing,” and “the above” as used herein may include plural forms. The terms “comprising,” “comprising,” “containing,” and “having” are inclusive and thus specify the presence of the mentioned features, steps, actions, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, actions, elements, components, and / or combinations thereof. The method steps, processes, and actions described herein are not to be interpreted as necessarily being performed in the specific order described or explained, unless a specific order of execution is specified. Additionally, it should be understood that alternative steps may be used.
[0033] In this specification, terms such as first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or parts, but these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or part from another region, layer, or part. Unless the context clearly indicates otherwise, terms such as "first," "second," etc., and other numerical terms do not imply order or sequence when used in this specification. Accordingly, the first element, component, region, layer, or part discussed below may be referred to as the second element, component, region, layer, or part without departing from the teachings of exemplary embodiments.
[0034] For convenience of explanation, spatial relative relationship terms such as "inside," "outside," "inward," "outward," "below," "downward," "above," "upward," "front," "rearward," etc., may be used herein to describe the relationship between one element or feature depicted in the drawings and another element or feature. These spatial relative relationship terms are intended to include other directions of the device in use or operation in addition to the directions depicted in the drawings. For example, if the device in the drawings is inverted, an element described as "below another element or feature" or "below another element or feature" will subsequently be oriented as "above another element or feature" or "upward of another element or feature." Accordingly, the exemplary term "below" may include both upward and downward directions. The device may be oriented in other ways (rotated 90 degrees or in other directions), and the spatial relative relationship descriptors used herein are interpreted accordingly.
[0035] Referring to FIGS. 1 through 17, as a specific embodiment of the myofascial massage device provided in the present application, the myofascial massage device comprises an actuator, a power transmission assembly, and a massage member. In the specific embodiment, the illustrated actuator is a drive motor (100), and both the drive motor (100) and the power transmission assembly are installed within a housing (900), and the housing (900) includes a first shell (901) and a second shell (902). An electrically connected PCBA board (904) and a battery (905) are further installed within the housing, and a button (903) connected to the PCBA board (904) is disposed on the housing (900) so that a user can operate it, and the drive motor is also connected to the PCBA board (904) and the battery (905). The user can operate the start and stop of the myofascial massage device through the button (903). In a specific embodiment, the massage member includes a piston head (906) capable of applying a massage action to the human body, and the piston head (906) can act on the human body as a massage vibration output terminal to implement a massage function. Additionally, a protective cover (907) and a vibration-reducing soft rubber (908) may be additionally installed on the outside of the piston head (906) to improve massage convenience. A charging interface (9041) exposed to the outside of the housing may be installed on the PCBA substrate (904), and the battery (905) may be a disposable battery or a rechargeable battery, and may also receive power by directly connecting to city electricity.
[0036] Specifically, the power transmission assembly includes a control link (300), an eccentric wheel (200), a sliding member (400), and a power transmission link (500), and the output shaft (110) of the drive motor (100) is connected to the eccentric wheel (200) to drive the eccentric wheel (200) to rotate. Specifically, the upper part of the output shaft (110) of the drive motor (100) is inserted into the eccentric wheel (200) and fixedly connected. Specifically, a cut surface is formed on the upper part of the output shaft (110), and an insertion hole is formed in the lower connecting part of the eccentric wheel (200) such that the cross-sections interlock with each other, so that the output shaft (110) and the eccentric wheel (200) rotate synchronously.
[0037] A sliding groove (201) arranged in a transverse direction is formed in the eccentric wheel (200), and the sliding member (400) is installed within the eccentric wheel (200) and can move relatively along the sliding groove (201), and the sliding member (400) can move transversely with respect to the eccentric wheel (200) within the sliding groove (201), and the relative position of the sliding member (400) and the eccentric wheel (200) in the longitudinal direction does not change. Specifically, a first linkage shaft (402) is disposed on the upper end of the sliding member (400), and a second linkage shaft (9061) is disposed on the massage member (906). One end (501) of the power transmission link is sleeved to the first linkage shaft (402) through a bearing (420), and the other end (503) of the power transmission link is sleeved to the second linkage shaft (9061) through a bearing (510). Generally, the first linkage shaft (402) is not on the same axis as the output shaft (110), so that when the eccentric wheel rotates, the power transmission link (500) is reciprocated radially through the sliding member (400). An intermediate connecting bridge (502) is further included between one end (501) and the other end (503) of the power transmission link, and the intermediate connecting bridge (502) is configured with a stepped transition structure having two connecting parts of different heights, making the structure more compact. One end of the power transmission link (500) is connected to the sliding member (400) so that it can rotate relative to it, and the other end of the power transmission link (500) is connected to the massage member (906) so that it can rotate relative to it.
[0038] The power transmission assembly further includes an adjustment link (300), and the output shaft (110) of the drive motor (100) is a hollow shaft. One end of the adjustment link (300) is inserted into the hollow shaft (110) and can move relatively along the axial direction with respect to the hollow shaft (110), and the other end of the adjustment link (300) is inserted into the sliding member (400) and can move relatively along the axial direction with respect to the sliding member (400). The power transmission assembly further includes a pin (410), and the adjustment link (300) is inserted into the sliding member (400) by passing through the eccentric wheel (200). An inclined hole (401) is formed in the sliding member (400), and the pin (410) is fixedly connected to one end of the adjustment link (300) inserted into the sliding member (400) by passing through the inclined hole (401).
[0039] The inclined hole (401) penetrates the sliding member (400) in a transverse direction, and the penetration direction intersects the opening direction of the sliding groove (201), and the pin (410) is inserted perpendicular to the opening direction of the sliding groove (201). In a specific embodiment, the transverse penetration direction of the inclined hole (401) is perpendicular to the opening direction of the sliding groove (201), that is, the pin (410) is inserted perpendicular to the opening direction of the sliding groove (201). The inclined hole (401) penetrates the sliding member (400) in a transverse direction, and the penetration direction is perpendicular to the opening direction of the sliding groove (201), and along the cross-section perpendicular to the penetration direction, the cross-section of the inclined hole (401) is in the shape of an elongated groove, and the centerline of the elongated groove intersects the axis of the adjustment link (300). At the same time, the axis of the adjustment link (300) is parallel to or overlaps with the axis of the output axis of the drive motor (100). When the adjustment link (300) moves in the longitudinal direction relative to the sliding member (400), the pin (410) fixedly connected to one end of the adjustment link (300) reciprocates along the inclined direction of the inclined hole (401), so the direction of movement of the pin (410) has two components, a transverse direction and a longitudinal direction, in an inclined direction that intersects the axis of the adjustment link (300), and accordingly generates two components of propulsion force in the transverse and longitudinal directions relative to the sliding member (400). At the same time, the sliding member (400) can only move laterally within the sliding groove (201), and since the sliding member (400) cannot move longitudinally relative to the eccentric wheel (200), the sliding member (400) moves laterally along the sliding groove (201) by the propulsion force.That is, when the adjustment link (300) moves in the longitudinal direction (up / down), the pin (410) and the slider inclined hole (401) generate a cutting force, causing the sliding member (400) to move radially with respect to the center of the output axis of the drive motor (100) within the eccentric wheel (200). By changing the radius of rotation between the sliding member (400) and the center of the output axis of the drive motor (100), the movement amplitude of the massage member (906) can be adjusted.
[0040] The terms "longitudinal" and "transverse" above are used for clarity and convenience and should not be interpreted in a limiting sense. Generally, the longitudinal direction corresponds to the axial direction of the output shaft of the drive motor (100), and the transverse direction corresponds to the radial direction perpendicular to the shaft.
[0041] A vibration reduction member is disposed within the sliding groove (201) and positioned between the sliding member (400) and the eccentric wheel (200). The vibration reduction member is a vibration reduction spring (220) positioned transversely between the outer wall of the sliding member (400) and the inner wall of the sliding groove (201). Specifically, spring grooves (404, 203) are formed on the opposing sides of the sliding member (400) and the eccentric wheel (200) to accommodate the vibration reduction spring (220) and make it more stable.
[0042] A positioning pin (210) is disposed on the upper side of the sliding member (400), and the positioning pin (210) is fixed to the eccentric wheel (200) in the longitudinal direction. Specifically, a pin insertion groove (403) disposed in the transverse direction is formed on the upper side of the sliding member (400), and one or two pin insertion grooves (403) may be formed. In a specific embodiment, the pin insertion grooves (403) are formed one each at two shoulder positions on the upper side of the sliding member (400), and the transverse arrangement direction of the pin insertion grooves (403) coincides with the opening direction of the sliding groove (201). A positioning hole (202) penetrating in the transverse direction is formed in the eccentric wheel (200), and a positioning pin (210) is inserted into the positioning hole (202). The positioning pin (210) penetrates and adheres to the pin insertion groove (403) along the opening direction of the pin insertion groove (403), thereby preventing the sliding member (400) from moving in the longitudinal direction relative to the eccentric wheel (200).
[0043] Additionally, the above-described fascia massage device further includes an adjustment assembly, the adjustment assembly includes a first adjustment knob (610), the first adjustment knob (610) is connected to one end of the adjustment link (300) via a bearing, the adjustment link (300) and the first adjustment knob (610) are fixed in a relative position in the longitudinal direction, the adjustment link (300) can rotate relative to the first adjustment knob (610), and the first adjustment knob (610) is fixed relative in the circumferential direction and its axial position is adjustable. The first adjustment knob (610) may undergo relative displacement in the longitudinal direction relative to the eccentric wheel (200). The above adjustment assembly further includes a second adjustment knob (620), and the second adjustment knob (620) is threaded to the first adjustment knob (610) to cause the first adjustment knob (610) to undergo relative displacement in the longitudinal direction, and the user can adjust the massage vibration stroke through the second adjustment knob (620). A position limiting structure is installed on the first adjustment knob (610) to restrict the first adjustment knob (610) to only be able to move up and down along the center of the drive motor (100). Specifically, the position limiting structure on the first adjustment knob (610) comprises a position determining projection (611) placed on the outer circumference of the first adjustment knob (610) and a position determining groove that engages with it placed on the housing, so that the two engage to fix the first adjustment knob (610) in the circumferential direction relative to the housing and prevent it from rotating, that is, restricting the first adjustment knob (610) to only be able to move up and down along the center of the drive motor (100).
[0044] Specifically, one end of the adjustment link (300) is inserted into the hollow shaft (110) of the drive motor, penetrates the drive motor, and is inserted into the inner ring of the bearing, and is connected to the first adjustment knob (610) through the bearing, and the position is fixed with respect to the inner ring of the bearing in the axial direction through the adjustment link (300) screw, and the outer ring of the bearing is fixedly connected to the first adjustment knob (610).
[0045] The second adjustment knob (620) is mounted on the housing and, specifically, is exposed to the outside of the housing so that the user can adjust and operate it, and the user performs massage stroke adjustment by rotating the second adjustment knob (620). Specifically, the second adjustment knob (620) is thread-coupled with the first adjustment knob (610), and since the first adjustment knob (610) can only move up and down in the axial direction and cannot rotate, when the second adjustment knob (620) rotates, the first adjustment knob (610) can be adjusted for up and down displacement in the axial direction. In addition, since the axial position between the first adjustment knob (610) and the adjustment link (300) is relatively fixed due to the connection through a bearing, when the first adjustment knob (610) is displaced up and down, the adjustment link (300) is displaced up and down. The other end of the adjustment link (300) is connected to the sliding member (400) via a pin (410), and since the pin (410) can slide within the inclined hole (401), when the adjustment link (300) moves longitudinally relative to the sliding member (400), the pin (410), which is fixedly connected to one end of the adjustment link (300), moves back and forth along the inclined direction of the inclined hole (401). Since the direction of movement of the pin (410) is an inclined direction that intersects the axis of the adjustment link (300) and has two components in the transverse and longitudinal directions, it generates two components of propulsion force in the transverse and longitudinal directions relative to the sliding member (400). At the same time, the sliding member (400) can only move laterally within the sliding groove (201), and since the sliding member (400) cannot move longitudinally relative to the eccentric wheel (200), the sliding member (400) moves laterally along the sliding groove (201) by the propulsion force.That is, the vertical movement of the adjustment link (300) causes the pin (410) to move along the inclined hole (401) and has lateral and longitudinal relative movement components with respect to the sliding member (400), and the pin (410) generates tangential components of lateral and longitudinal forces with respect to the inclined hole (401), that is, generates a lateral cutting force with respect to the sliding member (400), causing the sliding member (400) to move laterally with respect to the eccentric wheel (200) within the sliding groove (201), and this causes the sliding member (400) to move radially with respect to the center of the drive motor within the eccentric wheel (200), thereby implementing adjustment of the motion amplitude of the massage by changing the rotation radius dimension between the sliding member (400) and the center of the drive motor.
[0046] The above description is merely a preferred embodiment of the present application, and the scope of protection of the present application is not limited thereto, and any equivalent modification based on the technical concept of the present application falls within the scope of protection of the present application.
Claims
Claim 1 A myofascial massage device comprising an actuator, a power transmission assembly, and a massage member, wherein the power transmission assembly comprises an eccentric wheel, a sliding member, and a power transmission link, the output shaft of the actuator is connected to the eccentric wheel to drive the eccentric wheel to rotate, the sliding member is installed on the eccentric wheel to rotate together with the eccentric wheel, and the sliding member is connected to the massage member through the power transmission link. Claim 2 A myofascial massage device according to claim 1, wherein the eccentric wheel has a sliding groove formed therein arranged in a transverse direction, the sliding member is installed within the eccentric wheel and can move relatively along the sliding groove, the power transmission assembly further includes an adjustment link, the output shaft of the actuator is a hollow shaft, one end of the adjustment link is inserted into the hollow shaft and can move relatively along the axial direction with respect to the hollow shaft, and the other end of the adjustment link is inserted into the sliding member and can move relatively along the axial direction with respect to the sliding member. Claim 3 A myofascial massage device according to paragraph 2, wherein the power transmission assembly further includes a pin, the adjustment link is inserted into the sliding member by penetrating the eccentric wheel, an inclined hole is formed in the sliding member, and the pin is fixedly connected to one end of the adjustment link inserted into the sliding member by penetrating the inclined hole. Claim 4 A fascia massage device according to claim 3, characterized in that the inclined hole penetrates the sliding member in a transverse direction, and the penetration direction intersects the opening direction of the sliding groove. Claim 5 A fascia massage device according to claim 4, characterized in that the transverse penetration direction of the inclined hole is perpendicular to the opening direction of the sliding groove, and the pin is inserted perpendicular to the opening direction of the sliding groove. Claim 6 A myofascial massage device according to claim 4, characterized in that the inclination direction of the inclination hole intersects the axis of the adjustment link. Claim 7 A fascia massage device according to claim 4, characterized in that the cross-section of the inclined hole is in the shape of an elongated groove, and the centerline of the elongated groove intersects the axis of the adjustment link. Claim 8 A myofascial massage device according to claim 3, wherein the inclined hole penetrates the sliding member in a transverse direction, the penetration direction is perpendicular to the opening direction of the sliding groove, and along the cross-section perpendicular to the penetration direction, the cross-section of the inclined hole is in the shape of an elongated groove, and the centerline of the elongated groove intersects the axis of the adjustment link. Claim 9 A myofascial massage device according to any one of claims 1 to 8, characterized in that the axis of the adjustment link is parallel to or overlaps with the axis of the output axis of the actuator. Claim 10 A myofascial massage device according to claim 1, characterized in that one end of the power transmission link is connected to the sliding member and can rotate relatively, and the other end of the power transmission link is connected to the massage member and can rotate relatively. Claim 11 A myofascial massage device according to claim 10, wherein a first linkage shaft is disposed on the upper end of the sliding member, a second linkage shaft is disposed on the massage member, one end of the power transmission link is sleeved to the first linkage shaft through a bearing, and the other end of the power transmission link is sleeved to the second linkage shaft through a bearing. Claim 12 A myofascial massage device according to any one of claims 1 to 8, characterized in that a vibration reducing member is disposed within the sliding groove between the sliding member and the eccentric wheel. Claim 13 A fascia massage device according to claim 12, characterized in that the vibration reducing member is a vibration reducing spring disposed transversely between the outer wall of the sliding member and the inner wall of the sliding groove. Claim 14 A fascia massage device according to any one of claims 1 to 8, wherein a positioning pin is disposed on the upper side of the sliding member, and the positioning pin is fixed to the eccentric wheel in the longitudinal direction. Claim 15 A fascia massage device according to claim 14, wherein a pin insertion groove arranged transversely is formed on the upper part of the sliding member, and the positioning pin penetrates and adheres to the pin insertion groove along the opening direction of the pin insertion groove. Claim 16 A fascia massage device according to any one of claims 1 to 8, wherein a pin insertion groove is formed at each of two shoulder positions on the upper part of the sliding member, the positioning pin is fixed to the eccentric wheel in the longitudinal direction, the direction of formation of the pin insertion groove coincides with the opening direction of the sliding groove, the positioning hole penetrating in the transverse direction is formed in the eccentric wheel, the positioning pin is inserted into the positioning hole, and penetrates and adheres to the pin insertion groove along the opening direction of the pin insertion groove, thereby fixing the relative position of the sliding member and the eccentric wheel in the longitudinal direction. Claim 17 In paragraph 3, the fascia massage device further comprises a control assembly, wherein the control assembly comprises a first control knob, the first control knob is connected to one end of the control link, the control link and the first control knob have a fixed relative position in the longitudinal direction, the control link can rotate with respect to the first control knob, the first control knob is fixed relative in the circumferential direction, and the axial position is adjustable. Claim 18 A myofascial massage device according to claim 17, characterized in that the first adjustment knob is connected to one end of the adjustment link through a bearing. Claim 19 A myofascial massage device according to claim 17, characterized in that the first adjustment knob is equipped with a position limiting structure that engages with and is fixed to the housing. Claim 20 A myofascial massage device according to claim 17, wherein the adjustment assembly further comprises a second adjustment knob, the second adjustment knob is threaded to the first adjustment knob, and the second adjustment knob is capable of causing a relative displacement of the first adjustment knob in the longitudinal direction through the second adjustment knob. Claim 21 A myofascial massage device characterized in that, in any one of claims 1 to 8, a protective cover and vibration-reducing soft rubber are provided on the outside of the massage member.