Eccentric drive mechanism and massage device

Abstract

The utility model discloses an eccentric drive mechanism and massage equipment. The eccentric drive mechanism includes transmission assembly and eccentric part. Transmission assembly includes support frame, rotatable setting in the rotating shaft of support frame, setting in the first one way bearing of support frame, rotatable setting in the driving part of support frame and rotatable setting in the driven part of support frame, and the first one way bearing includes first connecting ring and the second connecting ring of with first connecting ring sleeve joint cooperation, and the rotating shaft is coaxial transmission connection with first connecting ring, and the second connecting ring is fixedly connected with support frame, and the rotating shaft is coaxial transmission connection with driving part, and driving part and driven part transmission cooperation. The eccentric part includes the connecting portion of rotation connection with driven part and the eccentric drive portion for driving massage head, and the connecting portion is separated from the eccentric drive portion. The eccentric drive mechanism can adjust the eccentric distance between the center line of eccentric drive portion and the axis of rotating shaft, and be favorable to improving the use experience of massage equipment.

Description

Technical Field

[0001] This disclosure relates to the field of health care device technology, and in particular to an eccentric drive mechanism and a massage device. Background Technology

[0002] Massage devices, as health care instruments to relieve or eliminate physical fatigue, are becoming increasingly popular due to their flexibility and convenience. To achieve better massage effects, targeted massage devices are usually designed according to the structural characteristics of different parts of the body, such as neck massage devices, waist massage devices, shoulder and neck massage devices, leg massage devices, and fascia guns.

[0003] In related technologies, some massage devices typically use an eccentric wheel to convert the motor's rotation into the linear reciprocating motion of the massage head. Because the eccentricity of the eccentric wheel in a massage device is fixed, the amplitude of the massage head's vibration is also fixed. This prevents users from adjusting the amplitude of the massage head according to their own massage needs, which is detrimental to improving the user experience of the massage device. Utility Model Content

[0004] This disclosure provides an eccentric drive mechanism and a massage device. The eccentric drive mechanism can adjust the eccentricity between the center line of the eccentric drive unit and the axis of the rotation shaft, allowing users to adjust the amplitude of the massage head according to their own massage needs and improving the user experience of the massage device.

[0005] The technical solution is as follows: According to a first aspect of the present disclosure, an eccentric drive mechanism is also provided, including a transmission assembly and an eccentric member. The transmission assembly includes a support frame, a rotating shaft rotatably disposed on the support frame, a first one-way bearing disposed on the support frame, a driving member rotatably disposed on the support frame, and a driven member rotatably disposed on the support frame. The first one-way bearing includes a first connecting ring and a second connecting ring sleeved with the first connecting ring. The rotating shaft is coaxially driven with the first connecting ring, and the second connecting ring is fixedly connected to the support frame. The rotating shaft is coaxially driven with the driving member, and the driving member is driven with the driven member. The eccentric member includes a connecting portion rotatably connected to the driven member and an eccentric drive portion for driving a massage head, the connecting portion and the eccentric drive portion being spaced apart.

[0006] When the rotating shaft rotates in the first rotation direction, the first connecting ring and the second connecting ring engage with a non-rotating mechanism, and the rotating shaft can drive the eccentric component to rotate via the transmission assembly. When the rotating shaft rotates in the opposite direction of the first rotation direction, the first connecting ring and the second connecting ring can rotate relative to each other, and the rotating shaft can drive the driven component and the eccentric component to rotate eccentrically relative to the axis of the rotating shaft via the driving component, thereby adjusting the distance between the center line of the eccentric drive unit and the axis of the rotating shaft.

[0007] The technical solution will be further explained below: In one embodiment, the support frame is provided with a first mounting through hole, and a second connecting ring is embedded in the first mounting through hole and fixedly connected to the support frame.

[0008] And / or, the first connecting ring is the inner ring of the first one-way bearing, and the second connecting ring is the outer ring of the first one-way bearing.

[0009] In one embodiment, the rotating shaft passes through the first mounting through hole and the first connecting ring, and is fixed coaxially with the driving member.

[0010] In one embodiment, the eccentric drive mechanism further includes a transmission member, one end of which is connected to the eccentric drive unit and the other end of which is connected to the massage head.

[0011] In one embodiment, the transmission component includes a connecting rod and a connecting sleeve for sliding connection with the housing assembly of the massage device. One end of the connecting rod is drivenly connected to an eccentric drive unit, and the other end of the connecting rod is drivenly connected to the connecting sleeve, which is inserted into the massage head.

[0012] In one embodiment, one end of the eccentric drive unit and the connecting rod is provided with a first mating hole, and the other end is provided with a first protrusion that engages with the first mating hole in a transmission manner. The first protrusion and the first mating hole are in clearance fit.

[0013] And / or, one end of the connecting rod and the connecting sleeve are provided with a second mating hole, and the other end is provided with a second protrusion that is in transmission engagement with the second mating hole, and the second protrusion is in clearance engagement with the second mating hole.

[0014] In one embodiment, the connecting sleeve has a sleeve hole for detachable connection with the massage head.

[0015] In one embodiment, the driving element includes a driving gear, and the driven element includes a driven gear that meshes with the driving gear.

[0016] And / or, the support frame includes a first support body fixedly connected to the second connecting ring, a second support body spaced apart from the first support body to form a protective space, and a connecting column fixed between the first support body and the second support body, with the driving member and the driven member rotatably disposed in the protective space.

[0017] In one embodiment, the transmission assembly further includes a second one-way bearing, which includes a third connecting ring and a fourth connecting ring that is sleeved with the third connecting ring. The third connecting ring is coaxially connected to the driven member, and the fourth connecting ring is fixedly connected to the second bracket body.

[0018] When the rotating shaft rotates in the first rotation direction, the third connecting ring and the fourth connecting ring engage to prevent rotation.

[0019] When the rotating shaft rotates in the opposite direction to the first rotation direction, the third connecting ring and the fourth connecting ring can rotate relative to each other.

[0020] In one embodiment, the connecting part is provided with a non-circular hole, and the driven member includes a shaft fixed coaxially with the third connecting ring. One end of the shaft passes through the third connecting ring and is provided with a non-cylinder that is in transmission cooperation with the non-circular hole.

[0021] And / or, the third connecting ring is the inner ring of the second one-way bearing, and the fourth connecting ring is the outer ring of the second one-way bearing.

[0022] According to a second aspect of the present disclosure, a massage device is also provided, including a housing assembly, a massage head, a power source, and an eccentric drive mechanism as described in any of the above embodiments. The massage head is capable of telescopic movement relative to the housing assembly and is in transmission engagement with the eccentric drive mechanism. The power source is disposed on the housing assembly and includes an output shaft fixedly connected to a rotating shaft. When the rotating shaft rotates in a first rotation direction, a first connecting ring and a second connecting ring are anti-rotationally engaged, and the power source is capable of driving the massage head to reciprocate telescopically relative to the housing assembly via the eccentric drive mechanism.

[0023] The technical solutions provided by the embodiments of this disclosure have at least the following beneficial effects: When using this massage device, the user presses the massage head against the area to be massaged, then activates the power source. The output shaft drives the rotating shaft to rotate in the first rotation direction. At this time, the first and second connecting rings engage to prevent rotation, causing the rotating shaft to drive the support frame and the driving component to rotate synchronously via the first one-way bearing and the driven component. This causes the eccentric component to rotate with the rotating shaft, thereby driving the eccentric component to rotate. The eccentric drive of the eccentric component then drives the massage head to reciprocate relative to the housing assembly, achieving reciprocating pressure on the area to be massaged to relieve discomfort.

[0024] If a user finds the amplitude of the massage head to be too large or too small during a massage, the power source outputs reverse power, driving the rotating shaft to rotate in the opposite direction of the first rotation direction via the output shaft. At this time, because the first and second connecting rings can rotate relative to each other, the rotating shaft cannot drive the support frame to rotate, but it can drive the driving component to rotate, which in turn drives the driven component and the eccentric component to rotate. This adjusts the distance between the center line of the eccentric drive unit and the axis of the rotating shaft, thereby regulating the amplitude of the massage head. In this way, the massage device allows users to adjust the amplitude of the massage head according to their own massage needs, improving the user experience.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0026] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure.

[0027] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a massage device shown in one embodiment.

[0029] Figure 2 This is a schematic diagram of the assembly structure of the eccentric drive mechanism and the power source shown in one embodiment.

[0030] Figure 3 for Figure 2 The diagram shows a top view of the assembly structure.

[0031] Figure 4 for Figure 3 The assembly structure shown is a half-section diagram in the AA section view direction.

[0032] Figure 5 for Figure 2 The diagram shows a partial exploded view of the assembled structure.

[0033] Explanation of reference numerals in the attached figures: 10. Massage device; 11. Housing assembly; 12. Massage head; 13. Power source; 13a. Output shaft; 14. Eccentric drive mechanism; 100. Transmission assembly; 110. Support frame; 111. First mounting through hole; 112. First bracket body; 113. Second bracket body; 114. Connecting column; 115. Protective space; 120. Rotating shaft; 121. Axis; 130. First one-way bearing; 131. First connecting ring; 132. Second connecting ring; 140. Driving element; 15. 0. Driven component; 151. Shaft; 101. Non-cylindrical component; 160. Second one-way bearing; 161. Third connecting ring; 162. Fourth connecting ring; 200. Eccentric component; 210. Connecting part; 211. Non-circular hole; 220. Eccentric drive part; 201. Centerline; 221. First protrusion; 300. Transmission component; 310. Connecting rod; 311. First mating hole; 312. Second mating hole; 313. Clearance groove; 320. Connecting sleeve; 321. Second protrusion; 322. Sleeve hole. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and do not limit the scope of protection of this disclosure.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure.

[0036] To better understand the eccentric drive mechanism of this disclosure, it is illustrated by a massage device that applies the eccentric drive mechanism.

[0037] like Figures 1 to 4 As shown, in some embodiments, a massage device 10 is provided, including a housing assembly 11, a massage head 12, a power source 13, and an eccentric drive mechanism 14. The massage head 12 is telescopically movable relative to the housing assembly 11. The power source 13 is disposed on the housing assembly 11 and includes an output shaft 13a.

[0038] The eccentric drive mechanism 14 includes a transmission assembly 100 and an eccentric member 200. The transmission assembly 100 includes a support frame 110, a rotating shaft 120 rotatably mounted on the support frame 110, a first one-way bearing 130 mounted on the support frame 110, a driving member 140 rotatably mounted on the support frame 110, and a driven member 150 rotatably mounted on the support frame 110. The first one-way bearing 130 includes a first connecting ring 131 and a second connecting ring 132 sleeved with the first connecting ring 131. The rotating shaft 120 is coaxially connected to the first connecting ring 131 and fixedly connected to the output shaft 13a. The second connecting ring 132 is fixedly connected to the support frame 110. The rotating shaft 120 is coaxially connected to the driving member 140, and the driving member 140 is in a driving engagement with the driven member 150. The eccentric member 200 includes a connecting portion 210 rotatably connected to the driven member 150 and an eccentric driving portion 220 for driving the massage head 12, with the connecting portion 210 and the eccentric driving portion 220 spaced apart.

[0039] When the rotating shaft 120 rotates in the first rotation direction, the first connecting ring 131 and the second connecting ring 132 engage in a non-rotating engagement, and the rotating shaft 120 can drive the eccentric member 200 to rotate via the transmission assembly 100, so that the power source 13 can drive the massage head 12 to reciprocate and extend relative to the housing assembly 11 via the eccentric drive mechanism 14. When the rotating shaft 120 rotates in the opposite direction of the first rotation direction, the first connecting ring 131 and the second connecting ring 132 can rotate relative to each other, and the rotating shaft 120 can drive the driven member 150 and the eccentric member 200 to rotate eccentrically relative to the axis 121 of the rotating shaft 120 via the driving member 140, so as to adjust the distance between the center line 201 of the eccentric drive part 220 and the axis 121 of the rotating shaft 120. When a user uses the massage device 10 for massage, the massage head 12 is pressed against the area to be massaged. Then, the power source 13 is activated, and the output shaft 13a drives the rotating shaft 120 to rotate in the first rotation direction. At this time, the first connecting ring 131 and the second connecting ring 132 engage to prevent rotation, so that the rotating shaft 120 drives the support frame 110 and the driving member 140 to rotate synchronously through the first one-way bearing 130 and the driven member 150, so that the eccentric component rotates with the rotating shaft 120, thereby driving the eccentric member 200 to rotate. The eccentric drive part 220 of the eccentric member 200 drives the massage head 12 to reciprocate and extend relative to the housing assembly 11, realizing reciprocating pressure on the area to be massaged to relieve discomfort.

[0040] If, during a massage using the massage device 10, the user finds that the amplitude of the massage head 12 is too large or too small, the power source 13 outputs reverse power, which drives the rotating shaft 120 to rotate in the opposite direction of the first rotation direction via the output shaft 13a. At this time, since the first connecting ring 131 and the second connecting ring 132 can rotate relative to each other, the rotating shaft 120 cannot drive the support frame 110 to rotate, but it can drive the driving member 140 to rotate, and the driving member 140 drives the driven member 150 and the eccentric member 200 to rotate, thereby adjusting the distance L1 between the center line 201 of the eccentric drive unit 220 and the axis 121 of the rotating shaft 120 (e.g., ...). Figure 5 As shown, the amplitude of the massage head 12 can be adjusted. In this way, the massage device 10 allows users to easily adjust the amplitude of the massage head 12 according to their own massage needs, improving the user experience of the massage device 10.

[0041] It should be noted that "the amplitude of the massage head 12" should be interpreted broadly, meaning the distance the massage head 12 travels in a single reciprocating motion. (Refer to...) Figure 5As shown, the larger the distance L1 between the center line 201 of the eccentric drive unit 220 and the axis 121 of the rotation shaft 120, the larger the amplitude of the massage head 12. In some embodiments, the massage device 10 is a fascia gun, and the amplitude of the massage head 12 is also called the stroke of the massage head 12.

[0042] It should be noted that the output shaft 13a and the rotating shaft 120 can be fixedly connected by pin fastening, snap-fitting, integral molding, non-cylindrical body 101 and non-cylindrical hole, or integral molding technology can be used to fix the output shaft 13a and the rotating shaft 120 together.

[0043] Optionally, in some embodiments, the output shaft 13a, the rotating shaft 120, and the driving member 140 are integrally formed.

[0044] It should be noted that the specific structure of the "eccentric component" includes, but is not limited to, eccentric wheels, eccentric rods, etc.

[0045] In some embodiments, the eccentric element is an eccentric wheel.

[0046] In some embodiments, the housing assembly 11 has a protective cavity, and the eccentric mechanism and power source 13 are disposed within the protective cavity. The massage head 12 may protrude from the protective cavity to facilitate massage by the user.

[0047] like Figures 2 to 4 As shown, in some embodiments, the support frame 110 is provided with a first mounting through hole 111, and a second connecting ring 132 is embedded in the first mounting through hole 111 and fixedly connected to the support frame 110. Thus, the first one-way bearing 130 is embedded in the first mounting through hole 111 through the second connecting ring 132, making the first one-way bearing 130 fit tightly with the support frame 110. This helps to improve the structural compactness of the eccentric drive mechanism 14 and reduce the space occupied inside the housing assembly 11.

[0048] like Figures 2 to 4 As shown, in some embodiments, the first connecting ring 131 is the inner ring of the first one-way bearing 130, and the second connecting ring 132 is the outer ring of the first one-way bearing 130. This facilitates the fixed connection of the first connecting ring 131 to the rotating shaft 120 and the fixed connection of the second connecting ring 132 to the support frame 110.

[0049] Optionally, the first connecting ring 131 is the inner ring of the first one-way bearing 130, and the second connecting ring 132 is the outer ring of the first one-way bearing 130. The first mounting through hole 111 is stepped and includes a large hole and a small hole. The second connecting ring 132 is inserted into the first mounting through hole 111 through the large hole and engages with the small hole. The rotating shaft 120 can pass through the small hole and be fixedly connected to the first connecting ring 131.

[0050] like Figure 4As shown, in some embodiments, the rotating shaft 120 passes through the first mounting through hole 111 and the first connecting ring 131, and is coaxially fixed with the driving member 140. In this way, the rotating shaft 120 is coaxially fixedly connected with the driving member 140 through the first connecting ring 131, while the second connecting ring 132 can be fixed to the support frame 110 through the first mounting through hole 111, which is easy to assemble.

[0051] like Figures 2 to 5 As shown, in some embodiments, the eccentric drive mechanism 14 further includes a transmission member 300, one end of which is connected to the eccentric drive unit 220, and the other end is connected to the massage head 12. Thus, by providing the transmission member 300, the distance between the massage head 12 and the eccentric member 200 can be flexibly set, reducing the difficulty of arranging the massage device 10.

[0052] Furthermore, in some embodiments, the transmission component 300 includes a connecting rod 310 and a connecting sleeve 320 for sliding connection with the housing assembly 11 of the massage device 10. One end of the connecting rod 310 is connected to the eccentric drive unit 220, and the other end of the connecting rod 310 is connected to the connecting sleeve 320. The connecting sleeve 320 is inserted into the massage head 12. Thus, the connection between the connecting rod 310 and the eccentric drive unit 220 allows for flexible arrangement between the connecting sleeve 320 and the eccentric component 200, reducing motion interference. The sliding connection between the connecting sleeve 320 and the housing assembly 11 allows the massage head 12 to achieve transmission with the eccentric drive unit 220 and reciprocate relative to the housing assembly 11 after the eccentric drive mechanism 14 is assembled with the housing assembly 11, by inserting into the connecting sleeve 320.

[0053] Specifically, when a user uses the massage device 10 for massage, they press the massage head 12 against the area to be massaged, and then start the power source 13, which drives the rotating shaft 120 to rotate in the first rotation direction via the output shaft 13a. At this time, the first connecting ring 131 and the second connecting ring 132 engage to prevent rotation, so that the rotating shaft 120 drives the support frame 110 and the driving member 140 to rotate synchronously via the first one-way bearing 130 and the driven member 150, so that the eccentric component rotates with the rotating shaft 120, thereby driving the eccentric member 200 to rotate. The eccentric drive part 220 of the eccentric member 200 drives the connecting sleeve 320 to slide via the connecting rod 310, thereby driving the massage head 12 to reciprocate and extend relative to the housing assembly 11, realizing reciprocating pressure on the area to be massaged to relieve discomfort in the area to be massaged.

[0054] Optionally, such as Figures 2 to 5As shown, in some embodiments, one end of the eccentric drive unit 220 and the connecting rod 310 is provided with a first mating hole 311, and the other end is provided with a first protrusion 221 that engages with the first mating hole 311. The first protrusion 221 and the first mating hole 311 are in clearance fit. In this way, the rotational driving force of the eccentric member 200 is converted into a driving force for the connecting sleeve 320 to swing by the clearance fit between the first protrusion 221 and the first mating hole 311. In this process, the clearance fit between the first protrusion 221 and the first mating hole 311 can also buffer the impact of the reverse collision force of the massage head 12 on the eccentric drive mechanism 14, reduce the manufacturing difficulty of the eccentric drive mechanism 14, and help reduce the cost of the massage device 10.

[0055] Optionally, such as Figures 2 to 5 As shown, in some embodiments, one end of the connecting rod 310 and the connecting sleeve 320 are provided with a second mating hole 312, and the other end is provided with a second protrusion 321 that engages with the second mating hole 312. The second protrusion 321 and the second mating hole 312 are in clearance fit. In this way, the swinging driving force of the connecting rod 310 is converted into a driving force for the connecting sleeve 320 to extend and retract by the clearance fit between the second protrusion 321 and the second mating hole 312. In this process, the clearance fit between the second protrusion 321 and the second mating hole 312 can also buffer the impact of the reverse collision force of the massage head 12 on the eccentric drive mechanism 14, reduce the manufacturing difficulty of the eccentric drive mechanism 14, and help reduce the cost of the massage device 10.

[0056] In some embodiments, the massage heads 12 include at least two, and at least two of the massage heads 12 are of different types. The massage heads 12 are detachably connected to the connecting sleeve 320. This allows users to conveniently select different types of massage heads 12 for massage according to their actual needs, further enhancing the user experience.

[0057] Optionally, in some embodiments, the connecting sleeve 320 is provided with a sleeve hole 322 for detachable connection with the massage head 12. Thus, the sleeve hole 322 facilitates insertion and engagement with the massage head 12, making assembly easier for the user and improving the user experience.

[0058] It should be noted that there are many ways to implement the driving component 140 and the driven component 150, such as the main pulley and the driven pulley, the main sprocket and the driven sprocket, the main gear and the driven gear, etc.

[0059] like Figure 4 as well as Figure 5 As shown, in some embodiments, the driving member 140 includes a driving gear, and the driven member 150 includes a driven gear that meshes with the driving gear. Thus, the rotational power of the rotating shaft 120 is transmitted to the eccentric member 200 through the gear structure, driving the eccentric member 200 to rotate. This results in a compact structure that occupies little space.

[0060] In combination with any of the above embodiments, such as Figure 4 as well as Figure 5 As shown, in some embodiments, the support frame 110 includes a first support body 112 fixedly connected to the second connecting ring 132, a second support body 113 spaced apart from the first support body 112 to form a protective space 115, and a connecting post 114 fixed between the first support body 112 and the second support body 113. The driving member 140 and the driven member 150 are rotatably disposed in the protective space 115. Thus, the protective space 115 can effectively protect the driving member 140 and the driven member 150, improving the durability of the biasing drive mechanism.

[0061] like Figure 4 as well as Figure 5 As shown, in some embodiments, the transmission assembly 100 further includes a second one-way bearing 160. The second one-way bearing 160 includes a third connecting ring 161 and a fourth connecting ring 162 that is sleeved with the third connecting ring 161. The third connecting ring 161 is coaxially connected to the driven member 150, and the fourth connecting ring 162 is fixedly connected to the second support body 113. When the rotating shaft 120 rotates in the first rotation direction, the third connecting ring 161 and the fourth connecting ring 162 are in a non-rotating engagement. When the rotating shaft 120 rotates in the opposite direction of the first rotation direction, the third connecting ring 161 and the fourth connecting ring 162 can rotate relative to each other. Thus, when a user uses the massage device 10 for massage, the massage head 12 is pressed against the area to be massaged. Then, the power source 13 is activated, and the output shaft 13a drives the rotating shaft 120 to rotate in the first rotation direction. At this time, the first connecting ring 131 and the second connecting ring 132 engage to prevent rotation, so that the rotating shaft 120 drives the support frame 110 and the driving member 140 to rotate synchronously through the first one-way bearing 130 and the driven member 150, so that the eccentric component rotates with the rotating shaft 120, thereby driving the eccentric member 200 to rotate. The eccentric drive part 220 of the eccentric member 200 drives the massage head 12 to reciprocate relative to the housing assembly 11, realizing the reciprocating pressing of the area to be massaged. When the massage head 12 is subjected to a reverse impact force, the third connecting ring 161 and the fourth connecting ring 162 prevent rotation, and the second one-way bearing 160 can be used to brake and prevent rotation, so as to avoid transmitting the impact force to the driving member 140 and the driven member 150, so that the position between the driving member 140 and the driven member 150 does not change, thereby improving the reliability of the eccentric drive mechanism 14.

[0062] like Figures 3 to 5As shown, in some embodiments, the connecting portion 210 is provided with a non-circular hole 211, and the driven member 150 includes a shaft 151 coaxially fixed with the third connecting ring 161. One end of the shaft 151 passes through the third connecting ring 161 and is provided with a non-cylindrical body 101 that engages with the non-circular hole 211. In this way, the engagement between the non-cylindrical body 101 and the non-circular hole 211 facilitates the transmission connection between the driving member 140 and the eccentric member 200, making assembly convenient.

[0063] In some embodiments, the follower 150 includes a driven gear, which is integrally formed with the shaft 151.

[0064] like Figure 4 As shown, in some embodiments, the third connecting ring 161 is the inner ring of the second one-way bearing 160, and the fourth connecting ring 162 is the outer ring of the second one-way bearing 160. This facilitates the fixed connection between the shaft 151 and the third connecting ring 161, and the fixed connection between the shaft 151 and the second bracket body 113 via the fourth connecting ring 162, thus enabling the second one-way bearing 160 to be assembled onto the second bracket body 113, facilitating assembly.

[0065] Optionally, in some embodiments, the second bracket body 113 may also be provided with a second mounting through hole, so that the fourth connecting ring 162 can be embedded into the second bracket body 113 through the second mounting through hole, so that the second one-way bearing 160 and the support frame 110 fit tightly together.

[0066] It should be noted that the specific implementation method of one-way bearings can be achieved in traditional technology, which will not be elaborated here.

[0067] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0068] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0070] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] It should be noted that when a component is described as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable. Examples include socketing, snap-fitting, screwing, integral molding, and welding, which are feasible in conventional technologies and will not be elaborated upon here.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure.

Claims

1. An eccentric drive mechanism, characterized in that, include: The transmission assembly (100) includes a support frame (110), a rotating shaft (120) rotatably disposed on the support frame (110), a first one-way bearing (130) disposed on the support frame (110), an active member (140) rotatably disposed on the support frame (110), and a driven member (150) rotatably disposed on the support frame (110). The first one-way bearing (130) includes a first connecting ring (131) and a second connecting ring (132) sleeved with the first connecting ring (131). The rotating shaft (120) is coaxially connected to the first connecting ring (131), the second connecting ring (132) is fixedly connected to the support frame (110), the rotating shaft (120) is coaxially connected to the active member (140), and the active member (140) is in a transmission engagement with the driven member (150). as well as The eccentric member (200) includes a connecting part (210) rotatably connected to the driven member (150) and an eccentric driving part (220) for driving the massage head (12), wherein the connecting part (210) and the eccentric driving part (220) are spaced apart. When the rotating shaft (120) rotates along the first rotation direction, the first connecting ring (131) and the second connecting ring (132) are anti-rotation engaged, and the rotating shaft (120) can drive the eccentric member (200) to rotate through the transmission assembly (100); When the rotating shaft (120) rotates in the opposite direction of the first rotation direction, the first connecting ring (131) and the second connecting ring (132) can rotate relative to each other, and the rotating shaft (120) can drive the driven member (150) and the eccentric member (200) to rotate eccentrically relative to the axis (121) of the rotating shaft (120) through the driving member (140) to adjust the distance between the center line (201) of the eccentric drive unit (220) and the axis (121) of the rotating shaft (120).

2. The eccentric drive mechanism (14) according to claim 1, characterized in that, The support frame (110) is provided with a first mounting through hole (111), and the second connecting ring (132) is embedded in the first mounting through hole (111) and fixedly connected to the support frame (110); And / or, the first connecting ring (131) is the inner ring of the first one-way bearing (130), and the second connecting ring (132) is the outer ring of the first one-way bearing (130).

3. The eccentric drive mechanism (14) according to claim 2, characterized in that, The rotating shaft (120) passes through the first mounting through hole (111) and the first connecting ring (131), and is coaxially fixed with the active member (140).

4. The eccentric drive mechanism (14) according to claim 1, characterized in that, The eccentric drive mechanism (14) further includes a transmission component (300), one end of which is connected to the eccentric drive unit (220) and the other end is connected to the massage head (12).

5. The eccentric drive mechanism (14) according to claim 4, characterized in that, The transmission component (300) includes a connecting rod (310) and a connecting sleeve (320) for sliding connection with the housing assembly (11) of the massage device (10). One end of the connecting rod (310) is connected to the eccentric drive unit (220), and the other end of the connecting rod (310) is connected to the connecting sleeve (320). The connecting sleeve (320) is inserted into the massage head (12).

6. The eccentric drive mechanism (14) according to claim 5, characterized in that, One end of the eccentric drive unit (220) and the connecting rod (310) is provided with a first mating hole (311), and the other end is provided with a first protrusion (221) that is in transmission engagement with the first mating hole (311). The first protrusion (221) and the first mating hole (311) are in clearance engagement. And / or, one end of the connecting rod (310) and the connecting sleeve (320) are provided with a second mating hole (312), and the other end is provided with a second protrusion (321) that is in transmission engagement with the second mating hole (312), and the second protrusion (321) is in clearance engagement with the second mating hole (312).

7. The eccentric drive mechanism (14) according to claim 5, characterized in that, The connecting sleeve (320) is provided with a sleeve hole (322) that can be detachably connected to the massage head (12).

8. The eccentric drive mechanism (14) according to any one of claims 1 to 7, characterized in that, The driving member (140) includes a driving gear, and the driven member (150) includes a driven gear that meshes with the driving gear. And / or, the support frame (110) includes a first support body (112) fixedly connected to the second connecting ring (132), a second support body (113) spaced apart from the first support body (112) to form a protective space (115), and a connecting column (114) fixed between the first support body (112) and the second support body (113), wherein the active member (140) and the driven member (150) are rotatably disposed in the protective space (115).

9. The eccentric drive mechanism (14) according to claim 8, characterized in that, The transmission assembly (100) further includes a second one-way bearing (160), the second one-way bearing (160) includes a third connecting ring (161) and a fourth connecting ring (162) sleeved with the third connecting ring (161), the third connecting ring (161) is coaxially connected to the driven member (150), and the fourth connecting ring (162) is fixedly connected to the second bracket body (113); When the rotating shaft (120) rotates in the first rotation direction, the third connecting ring (161) and the fourth connecting ring (162) engage in a non-rotational engagement. When the rotating shaft (120) rotates in the opposite direction to the first rotation direction, the third connecting ring (161) and the fourth connecting ring (162) can rotate relative to each other.

10. The eccentric drive mechanism (14) according to claim 9, characterized in that, The connecting part (210) is provided with a non-circular hole (211), and the driven member (150) includes a shaft (151) fixed coaxially with the third connecting ring (161). One end of the shaft (151) passes through the third connecting ring (161) and is provided with a non-cylindrical body (101) that is in transmission cooperation with the non-circular hole (211). And / or, the third connecting ring (161) is the inner ring of the second one-way bearing (160), and the fourth connecting ring (162) is the outer ring of the second one-way bearing (160).

11. A massage device, characterized in that, The device includes a housing assembly (11), a massage head (12), a power source (13), and an eccentric drive mechanism (14) as described in any one of claims 1 to 10. The massage head (12) is telescopically movable relative to the housing assembly (11) and is in transmission cooperation with the eccentric drive unit (220). The power source (13) is disposed on the housing assembly (11) and includes an output shaft (13a) fixedly connected to the rotating shaft (120). When the rotating shaft (120) rotates in the first rotation direction, the first connecting ring (131) and the second connecting ring (132) engage in anti-rotation cooperation, and the power source (13) can drive the massage head (12) to reciprocate and extend relative to the housing assembly (11) through the eccentric drive mechanism (14).

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