Low-noise lifting drive structure and massage device

Abstract

This invention discloses a low-noise lifting drive structure, comprising several rotating wave disks and several lifting pins driven by the rotating wave disks to move up and down. The upper surface of each rotating wave disk has a wave-like surface with varying heights around its axis, and a rolling guide groove is provided on the upper surface of the wave-like surface. The bottom of each lifting pin has a rolling friction structure, which includes a mounting cavity at the bottom of the lifting pin and a ball bearing inside the mounting cavity. The bottom of the ball bearing protrudes from the mounting cavity and abuts against the rolling guide groove. By incorporating a ball bearing at the bottom of the lifting pin, this invention utilizes the ball bearing's 360° rolling capability, allowing it to rotate freely and reduce noise. This overcomes the problem of excessive friction and noise generated when using pulleys on a circular wave surface.

Description

Technical Field

[0001] This invention relates to the field of massager technology, and in particular to a low-noise lifting drive structure and massage device. Background Technology

[0002] This section provides only background information related to this application to enable those skilled in the art to understand this application more thoroughly and accurately, and it is not necessarily prior art.

[0003] Massage devices are a new generation of physiotherapy and health care equipment developed based on physics, bionics, bioelectricity, traditional Chinese medicine, and years of clinical practice. With the development of social technology and the improvement of people's living standards, massage devices are becoming increasingly popular.

[0004] Massage devices can be applied to various parts of the body, including the neck, shoulders, back, waist, abdomen, brain, legs, feet, chest, and eyes. Currently, the most common types on the market are back massage devices for back massage and foot massage devices for foot massage.

[0005] In existing technologies, such as Figure 1 As shown, the device includes an existing rotating wave plate 21 and an existing lifting pin 20 that is driven by the existing rotating wave plate 21 to move up and down. As shown in the figure, the bottom of the existing lifting pin 20 is equipped with a pulley. During installation, the outer peripheral wall of the existing lifting pin 20 passes through a guide hole, and the bottom of the existing lifting pin 20 abuts against the existing rotating wave plate 21 via the pulley, thereby completing the installation and fixation of the existing lifting pin 20. In use, by driving the existing rotating wave plate 21 to rotate around its own axis using an external drive device, the pulley can slide along the annular wave surface of the existing rotating wave plate 21.

[0006] This configuration presents several problems. The pulley travels in a straight line, while the wavy surface guides in a circular direction. Because their paths are inconsistent, the pulley experiences significant friction as it slides on the circular wavy surface, leading to unusual noises. Furthermore, due to the misalignment of the pulley and the wavy surface, the pulley can be deflected by the wavy surface (shifting towards its side), causing the bottom of the existing lifting pin 20 to tilt. This increases friction between the existing lifting pin 20 and the guide hole, resulting in unusual noises and, in severe cases, even jamming the lifting pin 9. Summary of the Invention

[0007] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a low-noise lifting drive structure and a massage device to reduce noise.

[0008] This invention is achieved using the following technical solution: a low-noise lifting drive structure, comprising a plurality of rotating wave disks and a plurality of lifting pins driven by the rotating wave disks to move up and down, wherein:

[0009] The upper surface of the rotating wave disk is provided with a wave surface with varying height around the axis of the rotating wave disk, and the upper surface of the wave surface is provided with a rolling guide groove.

[0010] The bottom of the lifting pin is provided with a rolling friction structure, which includes a mounting cavity at the bottom of the lifting pin and a ball bearing disposed in the mounting cavity. The bottom of the ball bearing protrudes from the mounting cavity and abuts against the rolling guide groove.

[0011] Therefore, this invention, by incorporating ball bearings at the bottom of the lifting pin, utilizes the ball bearings' 360° rolling capability in any direction, allowing them to rotate freely and thus reducing noise. This overcomes the problem of excessive friction and noise caused by pulleys sliding on a circular wave surface. Furthermore, by providing rolling guide grooves on the upper surface of the wave surface, the point contact between the ball bearings and the wave surface is changed to line contact, increasing the contact area. This helps reduce the wear rate of the wave surface, thereby extending the service life of the rotating wave disc and reducing the frequency of replacement of vulnerable parts.

[0012] In one embodiment, an oil storage hole is provided on the inner wall of the mounting cavity, and the oil storage hole is recessed into the inner wall of the mounting cavity.

[0013] In one embodiment, the rolling friction structure further includes a limiting shell for preventing the ball from rolling out of the mounting cavity;

[0014] The limiting shell includes a fixing buckle that engages with the lifting pin and a limiting cover connected to the fixing buckle and used to cover the mounting cavity. The bottom of the limiting cover is provided with a limiting hole for the bottom of the ball to protrude. A stepped groove is provided around the limiting hole on the inner peripheral wall of the limiting cover. A guide rib is provided at the bottom of the mounting cavity extending into the stepped groove.

[0015] In one embodiment, the inner peripheral wall of the mounting cavity is provided with a snap-fit ​​hole and a snap-fit ​​guide groove. The snap-fit ​​hole passes through the outer peripheral wall of the lifting pin and communicates with the outside. The snap-fit ​​guide groove extends from the bottom of the mounting cavity along the height direction of the lifting pin and communicates with the snap-fit ​​hole. The fixing snap is located on the snap-fit ​​guide groove and engages with the snap-fit ​​hole.

[0016] In one embodiment, the device further includes a cover plate having a plurality of guide holes for guiding the vertical movement of the lifting pin. An oil reservoir is provided on the outer peripheral wall of the lifting pin, and at least a portion of the oil reservoir is located within the guide holes.

[0017] In one embodiment, the guide hole includes a small hole segment and a large hole segment arranged vertically, and a stop step is provided between the small hole segment and the large hole segment. The lifting pin includes a small shaft segment for passing through the small hole segment and a large shaft segment for passing through the large hole segment. An abutting step for stopping and cooperating with the stop step is provided between the small shaft segment and the large shaft segment.

[0018] At least two oil storage tanks are arranged circumferentially on the outer peripheral wall of the small shaft segment, and an air-relief surface is provided on the outer peripheral wall of the small shaft segment between two adjacent oil storage tanks. The air-relief surface extends along the length of the small shaft segment to the abutment step, and a return channel is formed between the air-relief surface and the inner wall of the small hole segment.

[0019] In one embodiment, a limiting structure for preventing the large shaft segment from rotating is provided between the large hole segment and the large shaft segment. The limiting structure includes a limiting groove provided on the large hole segment and a limiting rib provided on the large shaft segment and engaging with the limiting groove.

[0020] The limiting rib extends along the length of the main shaft section and is adjacent to the abutting step, and the limiting rib corresponds to the clearance surface in the radial direction of the main shaft section.

[0021] The present invention also provides a massage device, including a massage device body, wherein the massage device body is provided with a low-noise lifting drive structure as described above.

[0022] In one embodiment, the massage device body includes a housing, and a support plate and a drive assembly are disposed inside the housing, wherein:

[0023] The rotating wave plate is connected to the support plate;

[0024] The drive assembly includes a drive motor that is connected to and drives the rotating wave disk to rotate, a mounting bracket for fixing the drive motor, and a vibration damping component for providing vibration damping for the mounting bracket. The mounting bracket includes a mounting plate and a mounting post fixedly connected to the mounting plate. The vibration damping component includes a buffer plate for placing on the housing and a buffer threaded post fixedly connected to the buffer plate. When the buffer threaded post passes through the mounting post, the buffer plate abuts against the lower side of the mounting plate.

[0025] In one embodiment, both the buffer plate and the buffer threaded post are made of rubber or silicone.

[0026] Compared with existing technologies, the present invention has the following beneficial effects: By setting ball bearings at the bottom of the lifting pin, the present invention utilizes the characteristic of the ball bearings to roll 360° in any direction, allowing the ball bearings to roll in any direction and thus reducing noise. This changes the situation where, when using pulleys, the large friction generated when the pulleys slide on the annular wave surface easily leads to abnormal noise. Furthermore, by setting a rolling guide groove on the upper surface of the wave surface, the point contact between the ball bearings and the wave surface is changed to a line contact between the ball bearings and the rolling guide groove, thereby increasing the contact area. This helps to reduce the wear rate of the wave surface, thus extending the service life of the rotating wave disc and reducing the frequency of replacement of vulnerable parts. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of a lifting drive structure in the prior art;

[0028] Figure 2 This is a three-dimensional structural diagram of the massage device of the present invention;

[0029] Figure 3 This is a three-dimensional structural diagram of the massage device body of the present invention;

[0030] Figure 4 This is a three-dimensional structural diagram of the massage device body of the present invention with the cover removed;

[0031] Figure 5 This is a three-dimensional structural diagram of the massage device body of the present invention with part of the outer shell removed.

[0032] Figure 6 for Figure 5 A schematic diagram of the exploded structure;

[0033] Figure 7 This is a three-dimensional structural diagram of the cover plate in the low-noise lifting drive structure of the present invention;

[0034] Figure 8 This is a three-dimensional structural diagram of the rotating wave disk and the lifting pin in the low-noise lifting drive structure of the present invention.

[0035] Figure 9 This is a three-dimensional structural diagram of the rotating wave disk in the low-noise lifting drive structure of the present invention.

[0036] Figure 10 This is a three-dimensional structural diagram of the lifting pin in the low-noise lifting drive structure of the present invention, taken from a first-view perspective.

[0037] Figure 11This is a three-dimensional structural diagram of the lifting pin in the low-noise lifting drive structure of the present invention from a second perspective.

[0038] Figure 12 This is an exploded structural diagram of the lifting pin in the low-noise lifting drive structure of the present invention.

[0039] Figure 13 This is a first-view three-dimensional structural diagram of the low-noise lifting drive structure of the present invention after the partial structure of the lifting pin is hidden.

[0040] Figure 14 This is a two-dimensional structural diagram of the low-noise lifting drive structure of the present invention, with part of the lifting pin concealed.

[0041] Figure 15 This is a three-dimensional structural diagram of different lifting pins in the low-noise lifting drive structure of the present invention;

[0042] Figure 16 This is an exploded structural diagram of different lifting pins in the low-noise lifting drive structure of the present invention.

[0043] Figure 17 This is a three-dimensional structural diagram of the low-noise lifting drive structure of the present invention after some of the lifting pins of different structures have been hidden.

[0044] Figure 18 This is a three-dimensional structural diagram of the mounting bracket and shock-absorbing components assembled in the massage device body of the present invention.

[0045] Figure 19 This is an exploded structural diagram of the mounting bracket and shock-absorbing components assembled in the massage device body of the present invention.

[0046] The labels in the diagram represent the following meanings: 100, housing; 200, support plate; 300, rotating wave plate; 3001, wave surface; 30011, rolling guide groove; 4, lifting ejector pin; 41, small shaft section; 42, large shaft section; 43, abutment step; 5, mounting cavity; 51, snap-fit ​​guide groove; 6, oil reservoir; 7, ball bearing; 8, limiting shell; 81, fixing snap-fit; 82, limiting cover; 821, step groove; 822, limiting hole; 9, snap-fit ​​hole; 10 11. Guide ribs; 12. Cover plate; 13. Guide hole; 14. Small hole section; 15. Large hole section; 16. Stop step; 17. Oil reservoir; 18. Clearance surface; 19. Limiting groove; 10. Limiting rib; 11. Drive motor; 12. Mounting bracket; 13. Mounting plate; 14. Mounting column; 15. Vibration damping component; 16. Buffer plate; 17. Buffer threaded column; 28. Existing lifting pin; 29. ​​Existing rotating wave plate; 20. Massage device. Detailed Implementation

[0047] To further illustrate the technical means and effects adopted by this application to achieve the intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of this application, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0048] In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0049] It should also be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention 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 the present invention.

[0050] 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 invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0051] like Figure 2-19 As shown, the present invention discloses a low-noise lifting drive structure, which is applied in a massage device 22.

[0052] Specifically, the low-noise lifting drive structure includes several rotating wave disks 300 and several lifting pins 4. The lifting pins 4 are driven by the rotating wave disks 300 and can move up and down. In this embodiment, there are eight rotating wave disks 300 and multiple lifting pins 4. The upper surface of the rotating wave disks 300 is provided with a wave surface 3001 with varying heights, and the wave surface 3001 is arranged around the axis of the rotating wave disks 300, so that the wave surface 3001 can be arc-shaped or annular. In this embodiment, the wave surface 3001 is set to be annular. Furthermore, the upper surface of the wave surface 3001 is provided with a rolling guide groove 30011 with varying heights, and the rolling guide groove 30011 is arranged around the axis of the rotating wave disks 300, so that the rolling guide groove 30011 can be arc-shaped or annular. In this embodiment, the rolling guide groove 30011 is set to be annular. The bottom of the lifting pin 4 is provided with a rolling friction structure, which includes a mounting cavity 5 and a ball 7. The mounting cavity 5 is formed at the bottom of the lifting pin 4, and the ball 7 is disposed in the mounting cavity 5. Furthermore, the bottom of the ball 7 protrudes from the mounting cavity 5 and abuts against the rolling guide groove 30011 so that the ball 7 and the rolling guide groove 30011 form a line contact.

[0053] Before use, the lifting pin 4 is inserted into the guide hole 12, which allows it to move up and down, and the lifting pin 4 is limited in the horizontal direction by the guide hole 12. Thus, based on the above structure, when using the low-noise lifting drive structure of the present invention, the rotating wave disk 300 is driven to rotate around its own axis by an external drive device. Since the lifting pin 4 and the mounting cavity 5 located at the bottom of the lifting pin 4 do not move horizontally, under the drive of the rotating wave disk 300, the ball bearing 7 in the mounting cavity 5 forms relative rolling friction with the rolling guide groove 30011, causing the ball bearing 7 to roll relative to the lifting pin 4 on the undulating rolling guide groove 30011. This pushes the lifting pin 4 to move up and down relative to the guide hole 12, allowing the tip of the lifting pin 4 to extend out of the guide hole 12, providing a massage effect to the user. In this process, by utilizing the characteristic of the ball bearing 7 to roll 360° in any direction, the ball bearing 7 can roll in any direction on the annular rolling guide groove 30011. This changes the previous situation where the pulley did not have a steering characteristic and formed greater friction with the wave surface 3001, which caused abnormal noise to easily occur between the pulley and the wave surface 3001, and also caused abnormal noise to easily occur between the lifting pin 4 and the guide hole 12.

[0054] Therefore, this invention, by setting ball bearings 7 at the bottom of the lifting pin 4, utilizes the 360° rolling characteristic of the ball bearings 7 in any direction, allowing them to roll in any direction and thus reducing noise. This changes the situation where, when using pulleys, the large friction generated when the pulley slides on the annular wave surface 3001 easily leads to abnormal noise. Furthermore, by setting a rolling guide groove 30011 on the upper surface of the wave surface 3001, the point contact between the ball bearings 7 and the wave surface 3001 is changed to a line contact between the ball bearings 7 and the rolling guide groove 30011, thereby increasing the contact area. This helps to reduce the wear rate of the wave surface 3001, thus extending the service life of the rotating wave disk 300 and reducing the frequency of replacement of vulnerable parts.

[0055] The top of the lifting pin 4 is equipped with a top cap, which is detachably connected to the lifting pin 4. The advantage of this design is that by simply replacing the top cap, different sizes or shapes of pressing heads can be achieved, thereby providing users with different pressing sensations.

[0056] The mounting cavity 5 has an oil storage hole 6 recessed into its inner wall, creating a storage space for lubricating oil. In this embodiment, the oil storage hole 6 is located at the top of the mounting cavity 5. This allows lubricating oil, which can be either solid or liquid, to be placed in the oil storage hole 6. This lubrication helps to reduce friction between the ball bearing 7 and the mounting cavity 5, thereby reducing noise and wear. Figure 17 As shown, it should be noted that the oil storage hole 6 can also be set in other shapes, or can be extended along the inner wall of the mounting cavity 5, without restriction.

[0057] The rolling friction structure also includes a limiting shell 8, which prevents the ball 7 from rolling out of the mounting cavity 5. Specifically, the limiting shell 8 includes a fixing buckle 81 and a limiting cover 82 connected to the fixing buckle 81. The fixing buckle 81 is used to engage with the lifting pin 4, and the limiting cover 82 is used to cover the mounting cavity 5. The bottom of the limiting cover 82 is provided with a limiting hole 822 for the bottom of the ball 7 to protrude. Thus, when the fixing buckle 81 engages with the lifting pin 4, the limiting cover 82 covers the mounting cavity 5 and the bottom of the ball 7 protrudes out of the limiting hole 822, thereby preventing the ball 7 from rolling out of the mounting cavity 5 and allowing it to abut against the rolling guide groove 30011 to achieve rolling friction.

[0058] Furthermore, a stepped groove 821 is provided around the limiting hole 822 on the inner peripheral wall of the limiting cover 82, and a guide rib 10 extends from the bottom of the mounting cavity 5 into the stepped groove 821. This design serves two purposes: first, the guide rib 10 limits the limiting cover 82, preventing it from moving horizontally; second, the guide rib 10 guides the flow of lubricating oil in the oil storage hole 6 downwards under gravity, directing the oil directly into the stepped groove 821. This prevents some lubricating oil from seeping out from the gap between the bottom of the lifting pin 4 and the limiting cover 82, thus avoiding waste.

[0059] Furthermore, a storage space for accommodating lubricating oil is also formed between the stepped groove 821 and the ball 7. Thus, when the lubricating oil in the oil storage hole 6 flows down due to gravity, it will flow into the stepped groove 821, realizing secondary storage and reuse of the lubricating oil. The lubricating oil in the stepped groove 821 lubricates the ball 7, thereby effectively improving the utilization rate of the lubricating oil.

[0060] Specifically, the stepped groove 821 is arranged in an arc shape or an annular shape, that is, the stepped groove 821 is arranged around the limiting hole 822. In this way, the stepped groove 821 is arranged around the ball 7, so as to provide lubricating oil to the ball 7 more evenly.

[0061] The mounting cavity 5 has a latching hole 9 and a latching guide groove 51 on its inner peripheral wall. The latching hole 9 passes through the outer peripheral wall of the lifting pin 4 and communicates with the outside. The latching guide groove 51 extends from the bottom of the mounting cavity 5 along the height direction of the lifting pin 4 and communicates with the latching hole 9. The fixing latch 81 is located on the latching guide groove 51 and engages with the latching hole 9. That is, the fixing latch 81 is inserted into the mounting cavity 5 and latches outward onto the latching hole 9. With this configuration, when the ball 7 rolls, it will exert force on the limiting cover 82, that is, the ball 7 will exert a lateral pushing force on the limiting cover 82, so that the fixing latch 81 latches on the latching hole 9 from the inside out, thus making it more secure and preventing it from coming off. This is in contrast to the fixing latch 81 latching from the outside in or from the outside (e.g., Figure 15-16 As shown, this design effectively prevents the ball bearing 7 from exerting force on the limiting cover 82 during rolling, thus avoiding the problem of the fixing buckle 81 falling off the buckle hole 9 and causing the ball bearing 7 to fall off. Additionally, the buckle guide groove 51 provides space for the fixing buckle 81, preventing it from impacting the space within the mounting cavity 5. Furthermore, the buckle guide groove 51 also horizontally limits the fixing buckle 81, preventing it from rotating horizontally.

[0062] The system also includes a cover plate 11, which has several guide holes 12 for guiding the vertical movement of the lifting pin 4. An oil reservoir 13 is provided on the outer peripheral wall of the lifting pin 4, and at least a portion of the oil reservoir 13 is located within the guide holes 12. Thus, by providing lubricating oil in the oil reservoir 13, the lubricating oil can penetrate into the gap between the lifting pin 4 and the guide holes 12, lubricating the relative movement between them, thereby effectively reducing friction, frictional noise, and wear, and extending the service life of the lifting pin 4.

[0063] The guide hole 12 includes a small hole section 121 and a large hole section 122 arranged vertically. A stop step 123 is provided between the small hole section 121 and the large hole section 122. The lifting pin 4 includes a small shaft section 41 for passing through the small hole section 121 and a large shaft section 42 for passing through the large hole section 122. An abutment step 43 is provided between the small shaft section 41 and the large shaft section 42 for stopping and engaging with the stop step 123. Thus, when the lifting pin 4 passes through the guide hole 12, the stop step 123 can stop the abutment step 43, thereby stopping the upward movement of the lifting pin 4. Therefore, in practical applications, the vertical movement range of the lifting pin 4 can be limited by setting the length of the large hole section 122.

[0064] At least two oil storage tanks 13 are arranged circumferentially on the outer peripheral wall of the small shaft segment 41, and a clearance surface 14 is provided on the outer peripheral wall of the small shaft segment 41 between two adjacent oil storage tanks 13. The clearance surface 14 extends along the length of the small shaft segment 41 to abut against the step 43, and a return channel is formed between the clearance surface 14 and the inner wall of the small hole segment 121. In this embodiment, the clearance surface 14 is set as a cross-sectional plane. Since the inner wall of the small hole segment 121 is circular, a gap is formed between the cross-sectional plane clearance surface 14 and the circular inner wall of the small hole segment 121, and this gap forms a return channel. Thus, the lubricating oil flowing out of the oil reservoir 13 will penetrate into the gap between the small shaft section 41 and the small hole section 121. During the up-and-down movement of the small shaft section 41, it will inevitably come into contact with the small hole section 121, causing friction and squeezing of the lubricating oil in the gap between the small shaft section 41 and the small hole section 121. This will cause the lubricating oil to flow circumferentially along the small shaft section 41 into the return channel. Furthermore, the lubricating oil in the return channel will flow downward under the action of gravity to the step 43. Due to the action of the stop step 123, the lubricating oil flowing to the step 43 is difficult to push upward, allowing it to continue flowing downward and be reused. This avoids the lubricating oil being pushed upward out of the small hole section 121 and flowing to the upper surface of the cover plate 11, thus preventing waste and contamination of the upper surface of the cover plate 11.

[0065] At least two oil reservoirs 13 are arranged axially on the outer peripheral wall of the small shaft section 41. This arrangement allows for more than one oil reservoir 13, as the lubricating oil is fluid, and two or more reservoirs 13 can distribute the lubricating oil more evenly, preventing all the lubricating oil from flowing to the bottom of a single reservoir 13, which would result in uneven distribution. Furthermore, at least two oil reservoirs 13 are adjacent to the clearance surface 14, allowing the lubricating oil flowing out of the reservoirs 13 to more easily flow circumferentially along the small shaft section 41 into the return channel and continue flowing downwards.

[0066] A limiting structure is provided between the large hole section 122 and the large shaft section 42 to prevent the large shaft section 42 from rotating horizontally. This prevents the lifting pin 4 from rotating relative to the rolling guide groove 30011, which would increase friction and cause wear, effectively improving the service life of the rotating wave plate 300. Furthermore, the limiting structure includes a limiting groove 15 on the large hole section 122 and a limiting rib 16 on the large shaft section 42 that engages with the limiting groove 15. Thus, when the lifting pin 4 moves up and down relative to the guide hole 12, the limiting rib 16 can move up and down within the limiting groove 15 to guide the movement, effectively preventing the large shaft section 42 from rotating. Because the main shaft section 42 has an oil reservoir 13, if a limiting groove 15 were to be provided on the main shaft section 42, the groove depth of the limiting groove 15 would be relatively shallow. Therefore, after long-term use and wear, the limiting rib 16 could easily dislodge from the limiting groove 15, losing its limiting effect and causing the main shaft section 42 to rotate, thus reducing the service life of the components. Therefore, it is clear that providing the limiting rib 16 on the main shaft section 42 and the limiting groove 15 on the large hole section 122 helps avoid the above situation.

[0067] Furthermore, the limiting rib 16 extends along the length of the main shaft section 42 and is adjacent to the abutment step 43, and the limiting rib 16 corresponds to the clearance surface 14 in the radial direction of the main shaft section 42. That is, so that the limiting rib 16 corresponds to the clearance surface 14 in the radial direction of the lifting pin 4, the limiting rib 16 corresponds to the return channel in the radial direction of the lifting pin 4, thereby forming a lubricating oil drainage channel with guiding function in the axial direction of the lifting pin 4. Thus, when the lubricating oil flows downward in the return channel, it can flow from the return channel to the abutment step 43, and most of the lubricating oil on the abutment step 43 flows to the gap between the limiting rib 16 and the limiting groove 15, thereby providing lubrication between the limiting rib 16 and the limiting groove 15 and preventing jamming between the limiting rib 16 and the limiting groove 15.

[0068] At least two oil reservoirs 13 are arranged circumferentially on the outer peripheral wall of the main shaft section 42. This arrangement allows for more than one circumferentially arranged oil reservoir 13, as lubricating oil is fluid. Having two or more reservoirs ensures more even distribution of the lubricating oil, preventing it from flowing to the bottom of a single reservoir and resulting in uneven distribution. Furthermore, a limiting rib 16 is located between two adjacent oil reservoirs 13. This allows the lubricating oil flowing from the reservoir 13 to more easily flow circumferentially along the main shaft section 42 into the gap between the limiting rib 16 and the limiting groove 15, thus providing lubrication.

[0069] At least two oil reservoirs 13 are axially arranged on the outer peripheral wall of the main shaft section 42. This arrangement allows for more than one axially positioned oil reservoir 13, as the lubricating oil is fluid. Having two or more reservoirs 13 ensures a more even distribution of the lubricating oil, preventing it from flowing to the bottom of a single reservoir and resulting in uneven distribution. Furthermore, at least two oil reservoirs 13 are adjacent to the limiting ribs 16. This facilitates the flow of lubricating oil from the reservoirs 13 along the circumference of the main shaft section 42 into the gap between the limiting ribs 16 and the limiting grooves 15, thus providing lubrication.

[0070] The present invention also includes a massage device, comprising a massage device body, the interior of which is provided with the low-noise lifting drive structure as described above. Thus, by setting a ball bearing 7 at the bottom of the lifting pin 4, the present invention utilizes the characteristic of the ball bearing 7 to roll 360° in any direction, allowing it to rotate freely and thus reducing noise. This overcomes the problem of excessive friction and noise generated when using pulleys, which are prone to occur when sliding on the annular wave surface 3001. Furthermore, by setting a rolling guide groove 30011 on the upper surface of the wave surface 3001, the point contact between the ball bearing 7 and the wave surface 3001 is changed to a line contact, thereby increasing the contact area and reducing the wear rate of the wave surface 3001, thus improving the service life of the rotating wave disc 300.

[0071] The massage device body includes a housing 100, inside which a support plate 200 and a drive assembly are disposed. A rotating wave disk 300 is rotatably mounted on the support plate 200. The drive assembly includes a drive motor 17, a mounting bracket 18, and a shock-absorbing component 19. The drive motor 17 is connected to the rotating wave disk 300 and drives the rotating wave disk 300 to rotate. The mounting bracket 18 is used to fix the drive motor 17, and the shock-absorbing component 19 is used to provide vibration damping for the mounting bracket 18. Specifically, the mounting bracket 18 includes a mounting plate 181 and a mounting post 182 fixedly connected to the mounting plate 181, that is, the mounting bracket 18 is an independent component. The shock-absorbing component 19 includes a buffer plate 191 for placement on the housing 100 and a buffer threaded post 192 fixedly connected to the buffer plate 191, that is, the shock-absorbing component 19 is an independent component. The buffer threaded post 192 may have a threaded hole directly provided inside for screwing with a stud, or the buffer threaded post 192 may have a rubber granule with a threaded hole inside for installation.

[0072] Thus, when the buffer threaded post 192 is inserted into the mounting post 182, the buffer plate 191 abuts against the underside of the mounting plate 181. That is, with just one assembly action, the assembly of the buffer threaded post 192 and the mounting post 182, as well as the assembly of the buffer plate 191 and the mounting plate 181, can be achieved simultaneously, thereby improving assembly efficiency and speed. Specifically, the buffer plate 191 is placed on the housing 100. The mounting plate 181, the mounting post 182, and the drive motor 17 all indirectly contact the housing 100 through the buffer plate 191, thereby changing the rigid contact between the mounting plate 181 and the housing 100 into a flexible contact. This allows the vibration generated by the drive motor 17 during operation to be buffered and reduced by the buffer plate 191, thus helping to reduce noise caused by vibration. Similarly, the buffer threaded post 192 passes through the mounting post 182. Thus, the stud is screwed onto the buffer threaded post 192 and assembled inside the mounting post 182, changing the rigid contact between the stud and the mounting post 182 into a flexible contact. This allows the vibration generated by the drive motor 17 during operation to be buffered and reduced by the buffer plate 191, thereby reducing noise caused by vibration. Furthermore, since the buffer threaded post 192 only needs to pass through the mounting post 182, the buffer plate 191 can abut against the lower side of the mounting plate 181, facilitating assembly and effectively improving assembly efficiency. It should be noted that all structures within the massage device 22 can utilize the structure of the buffer plate 191 and the buffer threaded post 192 to achieve vibration buffering; further details are omitted here, and all should fall within the scope of protection of this invention.

[0073] Both the buffer plate 191 and the buffer threaded post 192 are made of rubber or silicone, meaning that the buffer plate 191 and the buffer threaded post 192 can be integrally molded by injection molding, making production convenient and quick.

[0074] Therefore, this invention achieves a low-noise effect by designing the lifting drive structure and motor transmission structure in the massage device to minimize noise in the areas most prone to noise generation and areas with the highest noise levels, thereby achieving a low-noise effect for the entire massage device.

[0075] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A low noise lifting drive structure, characterized by, It includes several rotating wave disks and several lifting pins that are driven by the rotating wave disks to move up and down, wherein: The upper surface of the rotating wave disk is provided with a wave surface with varying height around the axis of the rotating wave disk, and the upper surface of the wave surface is provided with a rolling guide groove. The bottom of the lifting pin is provided with a rolling friction structure, which includes a mounting cavity at the bottom of the lifting pin and a ball bearing disposed in the mounting cavity. The bottom of the ball bearing protrudes from the mounting cavity and abuts against the rolling guide groove. It also includes a cover plate with a plurality of guide holes for guiding the up and down movement of the lifting pin. An oil storage groove is provided on the outer peripheral wall of the lifting pin, and at least a portion of the oil storage groove is located within the guide holes. The guide hole includes a small hole segment and a large hole segment arranged vertically. A stop step is provided between the small hole segment and the large hole segment. The lifting pin includes a small shaft segment for passing through the small hole segment and a large shaft segment for passing through the large hole segment. An abutting step is provided between the small shaft segment and the large shaft segment for stopping and engaging with the stop step. At least two oil storage tanks are arranged circumferentially on the outer peripheral wall of the small shaft segment, and an air-relief surface is provided on the outer peripheral wall of the small shaft segment between two adjacent oil storage tanks. The air-relief surface extends along the length of the small shaft segment to the abutment step, and a return channel is formed between the air-relief surface and the inner wall of the small hole segment.

2. The low noise lift drive structure of claim 1, wherein, An oil storage hole is provided on the inner wall of the mounting cavity, and the oil storage hole is recessed into the inner wall of the mounting cavity.

3. The low-noise lifting drive structure according to claim 1, characterized in that, The rolling friction structure also includes a limiting shell to prevent the ball from rolling out of the mounting cavity; The limiting shell includes a fixing buckle that engages with the lifting pin and a limiting cover connected to the fixing buckle and used to cover the mounting cavity. The bottom of the limiting cover is provided with a limiting hole for the bottom of the ball to protrude. A stepped groove is provided around the limiting hole on the inner peripheral wall of the limiting cover. A guide rib is provided at the bottom of the mounting cavity extending into the stepped groove.

4. The low-noise lifting drive structure according to claim 3, characterized in that, The inner peripheral wall of the mounting cavity is provided with a snap-fit ​​hole and a snap-fit ​​guide groove. The snap-fit ​​hole passes through the outer peripheral wall of the lifting pin and communicates with the outside. The snap-fit ​​guide groove extends from the bottom of the mounting cavity along the height direction of the lifting pin and communicates with the snap-fit ​​hole. The fixing snap is located on the snap-fit ​​guide groove and snaps into the snap-fit ​​hole.

5. The low-noise lifting drive structure according to claim 1, characterized in that, A limiting structure for preventing the large shaft section from rotating is provided between the large hole section and the large shaft section. The limiting structure includes a limiting groove provided on the large hole section and a limiting rib provided on the large shaft section and in limiting cooperation with the limiting groove. The limiting rib extends along the length of the main shaft section and is adjacent to the abutting step, and the limiting rib corresponds to the clearance surface in the radial direction of the main shaft section.

6. A massage device, characterized in that, The device includes a massage device body, the massage device body having a low-noise lifting drive structure as described in any one of claims 1-5.

7. The massage device according to claim 6, characterized in that, The massage device body includes a housing, and a support plate and a drive assembly are disposed inside the housing, wherein: The rotating wave plate is connected to the support plate; The drive assembly includes a drive motor that is connected to and drives the rotating wave disk to rotate, a mounting bracket for fixing the drive motor, and a vibration damping component for providing vibration damping for the mounting bracket. The mounting bracket includes a mounting plate and a mounting post fixedly connected to the mounting plate. The vibration damping component includes a buffer plate for placing on the housing and a buffer threaded post fixedly connected to the buffer plate. When the buffer threaded post passes through the mounting post, the buffer plate abuts against the lower side of the mounting plate.

8. The massage device according to claim 7, characterized in that, Both the buffer plate and the buffer threaded post are made of rubber or silicone.

Images