Lifting abdomen kneading instrument

Abstract

The invention provides a lifting abdomen kneading instrument, belongs to the technical field of massage equipment, and aims to solve the problem that an existing abdomen kneading instrument can only perform single rotary massage and is limited in effect. The abdomen kneading instrument comprises a fixed seat, a rotary transmission wheel, a lifting motor, a lifting transmission gear set, a lifting transmission wheel, a massage head assembly and a rotary massage driving mechanism, the rotating transmission wheel comprises a rotating cylinder and a fluted disc; the lifting motor drives the fluted disc to rotate through the lifting transmission gear set; the lifting transmission wheel comprises a lifting cylinder and a rolling piece; a cam groove in the peripheral wall of the rotating cylinder drives the lifting cylinder to axially lift through the rolling piece; the rotary massage driving mechanism is installed in the lifting cylinder and drives the massage head assembly to rotate. The fixing seat comprises a bottom plate and a cover body, the bottom plate is provided with a through hole and a control panel, and the cover body is used for the lifting cylinder to penetrate out. The massage head can rotate and ascend and descend in a combined mode, human hand rubbing and pressing are simulated, the massage effect is improved, the structure is compact, transmission is stable, and adaptability and practicability are high.

Description

Technical Field

[0001] This invention relates to the field of massage equipment technology, and in particular to a lifting abdominal massager. Background Technology

[0002] Abdominal massagers use rotating massage heads to knead the abdomen, which can help promote blood circulation and digestion. However, existing abdominal massagers can only perform single-head rotation massage, and cannot flexibly adjust according to the tightness of abdominal muscles or the user's desired massage depth. This limited massage method results in limitations in massage effectiveness and user experience. Therefore, there is an urgent need for an abdominal massager that can simultaneously perform rotational and vertical massage to enrich the massage methods and improve comfort and effectiveness. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a lifting-type abdominal massager that can simultaneously perform rotational and lifting massage, thereby enhancing the abdominal massage effect and user experience.

[0004] The technical solution adopted in this invention is as follows:

[0005] This invention provides a lifting abdominal massager, comprising a fixed base, a rotating transmission wheel, a lifting motor, a lifting transmission gear set, a massage head assembly, and a rotating massage drive mechanism; the rotating transmission wheel is rotatably mounted on the fixed base, the lifting motor is mounted on the fixed base, and the lifting transmission gear set is rotatably mounted on the fixed base; the rotating transmission wheel includes a rotating cylinder rotatably mounted on the fixed base and a geared disc connected to one end of the rotating cylinder, and the output shaft of the lifting motor is connected to the geared disc via the lifting transmission gear set; the lifting transmission wheel includes components axially slidably mounted on the rotating cylinder. The lifting cylinder and three rolling elements arranged in a ring array are mounted on the peripheral wall of the lifting cylinder. A cam groove is provided on the peripheral wall of the rotating cylinder. The cam groove includes three peak segments and trough segments arranged in a ring array. The peak segments and trough segments are arranged alternately. The three rolling elements are slidably inserted into the cam groove. When the rotating drive wheel rotates, it drives the three rolling elements to slide along the peak segments and trough segments of the cam groove, so as to realize the lifting cylinder moving up and down along the axial direction of the rotating cylinder. The massage head assembly is rotatably mounted on one end of the lifting cylinder. The rotating massage drive mechanism is installed in the lifting cylinder and is connected to the massage head assembly in a transmission manner.

[0006] According to one embodiment of the present invention, the fixing base includes a base plate and a cover mounted on the base plate; a first annular groove is formed on the base plate, and a second annular groove is formed on the inner wall of the top end of the cover; a plurality of first balls arranged in an annular pattern are mounted on the end face of the gear disc, and the plurality of first balls are slidably disposed in the first annular groove; a plurality of second balls arranged in an annular pattern are mounted on the top face of the rotating cylinder, and the plurality of second balls are slidably disposed in the second annular groove; the two ends of the rotating transmission wheel are rotatably clamped between the base plate and the cover through the cooperation of the first balls with the first annular groove and the second balls with the second annular groove.

[0007] According to one embodiment of the present invention, a through hole is provided on the base plate for the wiring of the rotary massage drive mechanism inside the lifting cylinder to pass through and connect; both ends of the cover are open ends, and the top opening of the cover allows the lifting cylinder to pass through.

[0008] According to one embodiment of the present invention, the lifting motor and the lifting transmission gear set are mounted on the upper surface of the base plate.

[0009] According to one embodiment of the present invention, a control board is mounted on the lower surface of the base plate, and the control board is electrically connected to the lifting motor and the rotary massage drive mechanism respectively.

[0010] According to one embodiment of the present invention, the rolling element is a roller or a ball.

[0011] According to one embodiment of the present invention, the rotary massage drive mechanism includes a rotary motor, a worm gear, a first stepped gear, a second stepped gear, and an internal gear ring; the rotary motor and the worm gear are installed inside the lifting cylinder, and the worm gear is installed on the output shaft of the rotary motor; the first stepped gear and the second stepped gear are meshed inside the lifting cylinder, and the worm gear meshes with the worm wheel of the first stepped gear; one end of the lifting cylinder is an open end, and the other end is a closed end; a bottom cover is installed at the open end of the lifting cylinder, and an installation space is formed between the bottom cover and the closed end of the lifting cylinder; the rotary motor, the worm gear, the first stepped gear, and the second stepped gear are installed in the installation space; an annular groove is formed on the outer surface of the closed end of the lifting cylinder, and the internal gear ring is rotatably installed in the annular groove; the massage head assembly is installed on the internal gear ring; a transmission hole is opened at the closed end of the lifting cylinder, and the output gear of the second stepped gear is exposed through the transmission hole and meshes with the internal gear ring.

[0012] According to one embodiment of the present invention, the rotary massage drive mechanism further includes a plurality of third ball bearings and a cover; the plurality of third ball bearings are arranged in a ring array within the annular groove, and a first annular groove is formed on the inner surface of the inner gear ring, wherein the plurality of third ball bearings in the annular groove are slidably disposed within the first annular groove; the plurality of third ball bearings are arranged in a ring array on the outer surface of the inner gear ring, and a second annular groove is formed on one surface of the cover, wherein the plurality of third ball bearings on the outer side of the inner gear ring are slidably disposed within the second annular groove; the cover is installed at the closed end of the lifting cylinder, thereby rotatably clamping the inner gear ring between the lifting cylinder and the cover.

[0013] According to one embodiment of the present invention, the device further includes a housing, wherein the fixed base, the rotary transmission wheel, the lifting motor, the lifting transmission gear set, the lifting transmission wheel and the rotary massage drive mechanism are all installed inside the housing; the massage head assembly extends outward from the housing, and handles for handheld use are formed at both ends of the housing.

[0014] According to one embodiment of the present invention, a battery installed inside the housing is also included, the battery being used to power the lifting motor, the rotary massage drive mechanism, and the control board.

[0015] The beneficial effects of this invention are as follows:

[0016] I. Achieving Multi-Dimensional Massage and Enhancing Massage Effect: The massage head assembly is driven to rotate via a rotary massage drive mechanism. Simultaneously, the cam groove of the rotary transmission wheel and the rolling element of the lifting transmission wheel work together to achieve lifting motion. This allows the massage head assembly to simultaneously possess both rotational and lifting motions, overcoming the limitation of existing abdominal massage devices that can only perform single-mode rotational massage. It simulates a more comprehensive and human-like kneading motion (combining rotational kneading with alternating deep and shallow pressure). This synergistic "rotation + lifting" motion more comprehensively stimulates abdominal acupoints and muscles, enhancing the massage penetration into the abdomen, effectively promoting abdominal blood circulation, gastrointestinal motility, and muscle relaxation, significantly improving the massage effect.

[0017] II. Ingenious Structural Design and Stable, Reliable Transmission: The lifting motion is achieved through the sliding engagement of the cam groove of the rotating transmission wheel and the rolling elements of the lifting transmission wheel. This, combined with the lifting motor driving the rotating transmission wheel via a lifting transmission gear set, results in a compact and rationally laid-out overall structure—eliminating the need for complex lead screws or hydraulic lifting mechanisms and simplifying the assembly process. Furthermore, the gear transmission between the lifting motor and the lifting transmission gear set, as well as the sliding engagement between the rolling elements and the cam groove, both feature high transmission efficiency and smooth movement. This reduces mechanical wear and noise, ensures the accuracy and continuity of lifting actions, and extends the equipment's service life and operational reliability.

[0018] III. High Adaptability, Enhancing User Experience: The lifting motion is achieved through the alternating arrangement of peaks and troughs in the cam groove of the rotating transmission wheel. The lifting amplitude and frequency can be flexibly adjusted by designing the contour parameters of the cam groove (such as the peak / trough height difference and arrangement density) to adapt to different users' abdominal physiological characteristics (such as muscle tightness and fat thickness) and massage needs (such as superficial relaxation and deep stimulation). The rotational motion driven by the rotary massage drive mechanism and the lifting motion controlled by the lifting motor are independently controllable, allowing users to adjust the massage intensity according to their own feelings, enhancing comfort and personalized experience.

[0019] IV. High Functional Integration and Strong Practicality: The rotary drive (rotary massage drive mechanism) and lifting drive (lifting motor, lifting transmission gear set, rotary transmission wheel, lifting transmission wheel) are integrated into the compact structure of the fixed base. Through the nested cooperation of the rotating cylinder and the lifting cylinder, and the transmission relationship between the cam groove and the rolling element, the two movements are coordinated—expanding the massage function without additional complex components. The massage head assembly is rotatably mounted on the lifting cylinder, ensuring that the rotary massage action is not interfered with by the lifting movement. The two movements do not affect each other and work together, allowing the device to maintain portability while providing richer massage functions and a wider range of applicable scenarios (such as home, office, etc.). Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but should not be construed as limiting the invention. In the drawings,

[0021] Figure 1 : Assembly diagram of the internal structure of the lifting abdominal massager of this invention;

[0022] Figure 2 : First-view exploded view of the internal structure of the lifting abdominal massager of the present invention;

[0023] Figure 3 : A second-view exploded view of the internal structure of the lifting abdominal massager of this invention;

[0024] Figure 4 : Cross-sectional view of the internal structure of the lifting abdominal massager of this invention;

[0025] Figure 5 Assembly diagram of the lifting transmission wheel and rotary massage drive mechanism of the lifting abdominal massager of the present invention;

[0026] Figure 6 : First-view exploded view of the lifting transmission wheel and rotary massage drive mechanism of the lifting abdominal massager of the present invention;

[0027] Figure 7 : A second-view exploded view of the lifting transmission wheel and the rotary massage drive mechanism of the lifting abdominal massager of the present invention;

[0028] Figure 8 : First-view exploded view of the lifting abdominal massager of this invention;

[0029] Figure 9 : Second-view exploded view of the lifting abdominal massager of the present invention.

[0030] Reference numerals: 1. Fixed base; 2. Rotary transmission wheel; 21. Rotary cylinder; 22. Gear plate; 20. Cam groove; 3. Lifting motor; 4. Lifting transmission gear set; 5. Lifting transmission wheel; 50. Lifting groove; 51. Rolling element; 52. Massage head assembly; 6. Turntable; 61. Massage ball; 62. Physiotherapy lamp; 63. Rotary massage drive mechanism; 7. Rotary motor; 71. Worm gear; 72. First step gear; 73. Second step gear; 74. Internal gear ring; 75. Bottom cover; 76. Annular groove; 77. Transmission hole; 78. Ball bearing; 79. Cover; 70. First annular groove; 701. Second annular groove; 702. Base plate; 11. First annular groove; 13. Through hole; 110. Cover; 12. Guide block; 121. Second annular groove; 14. First ball bearing; 15. Second ball bearing; 16. Control board; 8. Outer shell; 9. Handle; 91. Battery; 10. Detailed Implementation

[0031] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0032] like Figures 1 to 4 As shown, the present invention provides a lifting abdominal massager, including a fixed base 1, a rotating transmission wheel 2, a lifting motor 3, a lifting transmission gear set 4, a lifting transmission wheel 5, a massage head assembly 6, and a rotating massage drive mechanism 7.

[0033] A rotary transmission wheel 2 is rotatably mounted on a fixed base 1. A lifting motor 3 is mounted on the fixed base 1. A lifting transmission gear set 4 is rotatably mounted on the fixed base 1. The rotary transmission wheel 2 includes a rotating cylinder 21 rotatably mounted on the fixed base 1 and a gear disk 22 connected to one end of the rotating cylinder 21. The output shaft of the lifting motor 3 is connected to the gear disk 22 via the lifting transmission gear set 4. The lifting transmission wheel 5 includes a lifting cylinder 51 axially slidably mounted on the rotating cylinder 21 and three rolling elements 52 arranged in a ring array on the periphery of the lifting cylinder 51. A cam groove 20 is provided on the periphery of the rotating cylinder 21. The cam groove 20 includes three peak segments and trough segments arranged in a ring array, with the peak segments and trough segments alternating. The three rolling elements 52 are slidably inserted into the cam groove 20. When the rotary transmission wheel 2 rotates, it drives the three rolling elements 52 to slide along the peak segments and trough segments of the cam groove 20, thereby realizing the axial lifting movement of the lifting cylinder 51 along the rotating cylinder 21. The massage head assembly 6 is rotatably mounted on one end of the lifting cylinder 51. The rotary massage drive mechanism 7 is installed inside the lifting cylinder 51 and is connected to the massage head assembly 6 in a transmission manner.

[0034] The beneficial effects of this invention are as follows:

[0035] I. Achieving Multi-Dimensional Massage and Enhancing Massage Effect: The massage head assembly 6 is driven to rotate by the rotary massage drive mechanism 7. Simultaneously, the cam groove 20 of the rotary transmission wheel 2 cooperates with the rolling element 52 of the lifting transmission wheel 5 to achieve lifting motion. This allows the massage head assembly 6 to simultaneously possess both rotational and lifting motions, breaking through the limitation of existing abdominal massagers that can only perform single rotational massage. It simulates a more complex motion closer to human hand kneading (combining rotational kneading with alternating deep and shallow pressure). This synergistic "rotation + lifting" motion can more comprehensively stimulate abdominal acupoints and muscles, enhance the massage penetration into the abdomen, effectively promote abdominal blood circulation, gastrointestinal motility, and muscle relaxation, and significantly improve the massage effect.

[0036] II. Ingenious Structural Design and Stable and Reliable Transmission: The lifting motion is achieved by the sliding engagement of the cam groove 20 of the rotary transmission wheel 2 and the rolling element 52 of the lifting transmission wheel 5. This, combined with the transmission method where the lifting motor 3 drives the rotary transmission wheel 2 through the lifting transmission gear set 4, results in a compact and rational overall structure—eliminating the need for complex lead screws or hydraulic lifting mechanisms and simplifying the assembly process. Furthermore, the gear transmission between the lifting motor 3 and the lifting transmission gear set 4, and the sliding engagement between the rolling element 52 and the cam groove 20, both feature high transmission efficiency and smooth movement, reducing mechanical wear and noise, ensuring the accuracy and continuity of lifting actions, and improving the service life and operational reliability of the equipment.

[0037] III. High Adaptability, Enhancing User Experience: The lifting motion is achieved through the alternating arrangement of peak and trough segments in the cam groove 20 of the rotating transmission wheel 2. The lifting amplitude and frequency can be flexibly adjusted by designing the contour parameters of the cam groove 20 (such as the peak / trough height difference and arrangement density) to adapt to different users' abdominal physiological characteristics (such as muscle tightness and fat thickness) and massage needs (such as superficial relaxation and deep stimulation). The rotational motion driven by the rotary massage drive mechanism 7 and the lifting motion controlled by the lifting motor 3 are independently controllable, allowing users to adjust the massage intensity according to their own feelings, enhancing user comfort and personalized experience.

[0038] IV. High Functional Integration and Strong Practicality: The rotary drive (rotary massage drive mechanism 7) and lifting drive (lifting motor 3, lifting transmission gear set 4, rotary transmission wheel 2, lifting transmission wheel 5) are integrated into the compact structure of the fixed base 1. Through the nested cooperation of the rotating cylinder 21 and the lifting cylinder 51, and the transmission relationship between the cam groove 20 and the rolling element 52, the two movements are coordinated—expanding the massage function without additional complex components. The massage head assembly 6 is rotatably mounted on the lifting cylinder 51, ensuring that the rotary massage action is not interfered with by the lifting movement. The two movements do not affect each other and work together, allowing the device to maintain portability while providing richer massage functions and a wider range of applicable scenarios (such as home, office, etc.).

[0039] In this embodiment, the fixed base 1 includes a base plate 11 and a cover 12 mounted on the base plate 11. A first annular groove 13 is formed on the base plate 11. A second annular groove 14 is formed on the inner wall of the top end of the cover 12. A plurality of first balls 15 arranged in a ring are mounted on the end face of the gear disc 22. The plurality of first balls 15 are slidably disposed in the first annular groove 13. A plurality of second balls 16 arranged in a ring are mounted on the top face of the rotating cylinder 21. The plurality of second balls 16 are slidably disposed in the second annular groove 14. The two ends of the rotating transmission wheel 2 are rotatably clamped between the base plate 11 and the cover 12.

[0040] The structural design of the fixing base 1 in this invention brings the following beneficial effects:

[0041] I. Reducing Friction Loss and Improving Rotation Smoothness: By setting multiple first ball bearings 15 arranged in a ring on the end face of the toothed disc 22 and sliding them within the first annular groove 13 of the base plate 11, and simultaneously setting multiple second ball bearings 16 arranged in a ring on the top face of the rotating cylinder 21 and sliding them within the second annular groove 14 on the inner wall of the top of the cover 12, the relative rotational motion between the rotating transmission wheel 2 (including the rotating cylinder 21 and the toothed disc 22) and the fixed base 1 (base plate 11 and cover 12) is transformed from traditional sliding friction to rolling friction. The coefficient of friction of rolling friction is much smaller than that of sliding friction, which can significantly reduce mechanical loss and heat generation during rotation, reduce operating noise, and make the rotation of the rotating transmission wheel 2 smoother and more stable, ensuring the continuity of lifting transmission and massage actions.

[0042] II. Enhancing Structural Stability and Ensuring Transmission Accuracy: The rotating cylinder 21 is stably clamped between the base plate 11 and the cover 12 through the cooperation of the first ball bearing 15 with the first annular groove 13 and the second ball bearing 16 with the second annular groove 14, forming a support structure with positioning at both ends. This design effectively limits the radial sway of the rotating cylinder 21, ensuring the stability of its rotation axis and avoiding the impact on the cooperation accuracy between the cam groove 20 and the rolling element 52 of the lifting transmission wheel 5 due to offset during rotation. This, in turn, ensures the accuracy and consistency of the lifting cylinder 51's lifting movement and improves the reliability of the massage head assembly 6's operation.

[0043] III. Simplified Assembly Process and Enhanced Structural Compactness: The fixed base 1 adopts a combined structure of base plate 11 and cover 12. With the standardized engagement of the first annular groove 13, the second annular groove 14, the first ball bearing 15, and the second ball bearing 16, precise installation of the rotary transmission wheel 2 can be achieved without complex positioning fixtures, simplifying the assembly process and reducing production difficulty. Simultaneously, this integrated support structure incorporates the rotary support function of the rotary transmission wheel 2 into the fixed base 1, avoiding the need for additional support components, resulting in a more compact overall structure and facilitating the miniaturization of the equipment.

[0044] IV. Extending Equipment Lifespan and Enhancing Reliability: The cooperation between the first ball 15 and the first annular groove 13, and the second ball 16 and the second annular groove 14, not only reduces frictional loss but also, through the limiting effect of the annular grooves on the balls, disperses the load generated by the rotating transmission wheel 2 during rotation and under stress, avoiding component deformation or damage caused by localized stress concentration. Furthermore, the wear rate of rolling components is much lower than that of sliding contact components, which can significantly extend the service life of the rotating transmission wheel 2 and the fixed base 1, improving the long-term reliability of the equipment.

[0045] In this embodiment, a through hole 110 is provided on the base plate 11 for the wiring connection of the rotary massage drive mechanism 7 inside the lifting cylinder 51. Both ends of the cover 12 are open ends, so that the lifting cylinder 51 can pass through the opening at the top of the cover 12.

[0046] In this embodiment, two lifting grooves 50 are provided on the outer peripheral surface of the lifting transmission wheel 5. The cover 12 has a guide block 121 that slides with the lifting grooves 50.

[0047] The sliding engagement between the lifting groove 50 of the lifting transmission wheel 5 and the guide block 121 on the cover 12 has the following beneficial effects:

[0048] I. Precise radial limiting completely eliminates lifting and lowering sway.

[0049] Two lifting grooves 50 on the outer circumference of the lifting drive wheel 5 slide in conjunction with the guide block 121 on the cover 12, forming a dual constraint structure of "axial lifting + radial limiting": when the lifting drive wheel 5 is driven to rise and fall axially by the cam groove 20 of the rotating drive wheel 2 (in conjunction with the rolling element 52), the guide block 121 is always engaged in sliding within the lifting groove 50, which can strictly limit the radial displacement of the lifting drive wheel 5 (such as left and right offset, circumferential rotation). Compared with the single constraint of the rolling element 52 and the cam groove 20 alone, this structure can reduce the deviation of the lifting trajectory of the lifting drive wheel 5, and can always maintain the direction of movement perpendicular to the abdomen when driving the massage head, avoiding the displacement of the massage position due to sway, especially suitable for the massage needs of sensitive areas of the abdomen.

[0050] II. Optimized stress balance to extend the lifespan of core components

[0051] The cooperation between the guide block 121 and the lifting groove 50 can share the radial load of the lifting transmission wheel 5: when the rolling element 52 slides along the cam groove 20 (driven by the rotating transmission wheel 2), it will generate a radial force on the lifting transmission wheel 5. At this time, the guide block 121 will bear part of the radial force through the lifting groove 50, avoiding wear of the groove wall and deformation of the rolling element due to local force concentration between the rolling element 52 and the cam groove 20. At the same time, the base plate 11 of the fixed seat 1 provides bidirectional support to the rotating transmission wheel 2 through the first ball bearing 15 and the cover 12 provides bidirectional support through the second ball bearing 16, forming a force balance system of "stable rotation of the rotating transmission wheel 2 + precise lifting of the lifting transmission wheel 5", which extends the service life of the rolling element 52 and the cam groove 20 by more than 20%.

[0052] III. Improved smoothness of lifting and lowering

[0053] The sliding engagement between the guide block 121 and the lifting groove 50 provides "linear guidance" for the lifting transmission wheel 5: the guide block 121 can guide the lifting transmission wheel 5 to rise and fall smoothly along a straight line through the lifting groove 50, avoiding lifting and falling jams caused by the difference in the contact form between the rolling element and the cam groove 20, and ensuring that the lifting transmission wheel 5 remains smooth and without jerking when rising and falling rapidly (such as in the soothing massage mode).

[0054] The lifting motor 3 and the lifting transmission gear set 4 are mounted on the upper surface of the base plate 11. The control board 8 is mounted on the lower surface of the base plate 11. The control board 8 is electrically connected to the lifting motor 3 and the rotary massage drive mechanism 7.

[0055] The above-described structural design in this invention brings the following beneficial effects:

[0056] 1. Optimize the circuit layout and avoid motion interference: The through hole 110 on the base plate 11 provides a dedicated passage for the circuit of the rotary massage drive mechanism 7 inside the lifting cylinder 51, so that the circuit can extend from the inside of the lifting cylinder 51 to the bottom of the base plate 11 and connect with the control board 8. This avoids the circuit being exposed between the rotating transmission wheel 2, the lifting transmission wheel 5 and other moving parts, effectively preventing the circuit from getting tangled, worn or squeezed by moving parts, ensuring the stability and safety of the circuit connection, and making the internal circuit layout more regular, reducing the difficulty of tidying up the circuit during assembly.

[0057] II. Ensuring Smooth Lifting Movement: The cover 12 is designed with openings at both ends, especially the top opening, which provides a through space for the lifting cylinder 51 to move up and down. This ensures that when the lifting cylinder 51 moves up and down along the axis of the rotating cylinder 21 under the drive of the lifting motor 3, it will not be obstructed by the structure of the cover 12, thus ensuring the integrity of the lifting stroke and the smoothness of the movement. At the same time, the cover 12 can protect the internal rotating transmission wheel 2, lifting transmission gear set 4 and other components, preventing external dust and impurities from entering or being accidentally touched by the user, thus balancing functionality and safety.

[0058] III. Improving structural compactness and transmission efficiency: The lifting motor 3 and the lifting transmission gear set 4 are installed on the upper surface of the base plate 11, forming a close-range transmission cooperation with the gear disk 22 of the rotating transmission wheel 2, which shortens the power transmission path, reduces transmission loss, and improves the response speed and efficiency of the lifting drive; at the same time, the drive components are concentrated on the upper surface of the base plate 11, forming an upper and lower layered layout with the control plate 8 on the lower surface of the base plate 11, making full use of the three-dimensional space of the fixed seat 1, making the overall structure more compact, which is conducive to the miniaturization design of the equipment.

[0059] IV. Facilitates Circuit Integration and Maintenance: The control board 8 is installed on the lower surface of the base plate 11 and is electrically connected to the lifting motor 3 and the rotary massage drive mechanism 7. This layout shortens the connection path between the circuit control core and the power execution components (lifting motor 3 and rotary massage drive mechanism 7), reducing circuit redundancy. At the same time, the control board 8 is located below the base plate 11, which facilitates disassembly and repair during later maintenance. The circuit part can be operated without disassembling the cover 12 and the internal transmission components, reducing the difficulty of maintenance.

[0060] V. Enhanced Structural Coordination: The base plate 11 serves as the core installation carrier. Its upper surface supports the lifting motor 3, the lifting transmission gear set 4, and the rotating transmission wheel 2, while its lower surface integrates the control board 8. Together with the protective and guiding functions of the cover 12, it forms an integrated structural system of "drive-transmission-control-protection". The components are arranged in an orderly manner and function in coordination, which not only ensures the stability of mechanical transmission but also ensures the reliability of circuit control, thereby improving the overall operating performance of the equipment.

[0061] In this embodiment, the rolling element 52 can be a roller or a ball.

[0062] In this embodiment, the massage head assembly 6 includes a turntable 61 and three massage balls 62 mounted on the upper surface of the turntable 61. A therapy lamp 63 is mounted on the turntable 61 between any two massage balls 62.

[0063] In this embodiment, as Figures 5 to 7 As shown, the rotary massage drive mechanism 7 includes a rotary motor 71, a worm gear 72, a first stepped gear 73, a second stepped gear 74, and an internal gear ring 75. The rotary motor 71 and the worm gear 72 are installed inside the lifting cylinder 51. The worm gear 72 is installed on the output shaft of the rotary motor 71. The first stepped gear 73 and the second stepped gear 74 are meshed and installed inside the lifting cylinder 51. The worm gear 72 is meshed with the worm wheel of the first stepped gear 73. One end of the lifting cylinder 51 is an open end, and the other end is a closed end. A bottom cover 76 is installed on the open end of the lifting cylinder 51 to install the rotary motor 71, the worm gear 72, the first stepped gear 73, and the second stepped gear 74 in the installation space between the bottom cover 76 and the closed end of the lifting cylinder 51. An annular groove 77 is formed on the outer surface of the closed end of the lifting cylinder 51. The internal gear ring 75 is rotatably installed in the annular groove 77. The massage head assembly 6 is installed on the internal gear ring 75. The closed end of the lifting cylinder 51 has a transmission hole 78 for exposing the output gear of the second stepped gear 74. The output gear of the second stepped gear 74 is meshed with the internal gear ring 75.

[0064] The above-described structural design of the rotary massage drive mechanism 7 in this invention brings the following beneficial effects:

[0065] I. Precise and Stable Transmission, Enhancing Massage Reliability: The rotary massage drive mechanism 7 adopts a multi-stage transmission structure consisting of a rotary motor 71, a worm gear 72, a first-stage gear 73, a second-stage gear 74, and an internal gear ring 75. The worm gear 72 meshes with the first-stage gear 73 to form a worm gear transmission, which features precise transmission ratio and smooth operation. This effectively reduces the rotational speed and increases the torque, adapting to the rotational force and speed required by the massage head assembly 6. Simultaneously, the second-stage gear 74 meshes with the internal gear ring 75 through the transmission hole 78, ensuring a clear and redundant power transmission path. This guarantees that the power from the rotary motor 71 can be efficiently transmitted to the massage head assembly 6, ensuring the consistency and stability of the massage head assembly 6's rotational movement and preventing the massage effect from being affected by transmission lag or slippage.

[0066] II. Compact and Integrated Structure, Adaptable to Lifting Motion: The rotary motor 71, worm gear 72, first-step gear 73, and second-step gear 74 are all integrated within the lifting cylinder 51. A closed mounting space is formed between the bottom cover 76 and the closed end of the lifting cylinder 51, making the rotary drive component and the lifting cylinder 51 an integrated structure. This design ensures that the rotary massage drive mechanism 7 does not interfere with the movement of other components when it rises and falls synchronously with the lifting cylinder 51, guaranteeing the synergy of the "rotation + lifting" composite motion. Simultaneously, the compact internal layout fully utilizes the internal space of the lifting cylinder 51, avoiding an increase in device size due to the addition of rotary drive functionality, thus facilitating the miniaturization design of the abdominal massager.

[0067] 3. Reliable rotational support and reduced operating noise: The internal gear ring 75 is rotatably mounted in the annular groove 77 at the closed end of the lifting cylinder 51. The annular groove 77 provides stable rotational guidance and support for the internal gear ring 75, effectively limiting the radial wobbling of the internal gear ring 75, ensuring the meshing accuracy between it and the output gear of the second-stage gear 74, and reducing the impact and friction noise during gear transmission. At the same time, the cooperation between the internal gear ring 75 and the annular groove 77 ensures that the rotational center axis of the massage head assembly 6 is consistent with the axis of the lifting cylinder 51, avoiding eccentric vibration during rotation and improving the stability and quietness of the massage process.

[0068] IV. Convenient assembly and maintenance, improving production efficiency: The open end of the lifting cylinder 51 is closed by the bottom cover 76, forming an installation structure of "one end closed and one end detachable". This facilitates the quick installation of components such as the rotary motor 71, worm gear 72, first step gear 73, and second step gear 74 into the lifting cylinder 51 from the open end, and then fixes them by the bottom cover 76, simplifying the assembly process of internal components. During later maintenance, only the bottom cover 76 needs to be removed to inspect or replace the internal transmission components, without disassembling the entire lifting cylinder 51, reducing maintenance difficulty and improving production and maintenance efficiency.

[0069] V. Enhanced Functional Safety: The worm gear drive (worm 72 and the worm wheel of the first step gear 73) has a reverse self-locking characteristic, which can prevent the massage head assembly 6 from driving the rotating motor 71 in reverse when subjected to external force, avoid damage to the internal gears or motor failure due to accidental force, and at the same time prevent the massage head assembly 6 from suddenly reversing and causing discomfort to the user, thus improving the safety and durability of the equipment operation.

[0070] In this embodiment, the rotary massage drive mechanism 7 includes third ball bearings 79, and multiple third ball bearings 79 are arranged in a ring array within an annular groove 77. A first annular groove 701 is formed on the inner surface of the internal gear ring 75. Multiple third ball bearings 79 within the annular groove 77 are slidably disposed within the first annular groove 701. Multiple third ball bearings 79 are arranged in a ring array on the outer surface of the internal gear ring 75. The rotary massage drive mechanism 7 includes a cover 70, and a second annular groove 702 is formed on one surface of the cover 70. Multiple third ball bearings 79 on the internal gear ring 75 are slidably disposed within the second annular groove 702. The cover 70 is installed at the closed end of the lifting cylinder 51 to rotatably clamp the internal gear ring 75 between the lifting cylinder 51 and the cover 70.

[0071] The rotary massage drive mechanism 7 of this invention adopts a structural design that combines a cover 70, a third ball bearing 79, a first annular groove 701, and a second annular groove 702, resulting in the following beneficial effects:

[0072] I. Significantly Reduced Frictional Resistance and Improved Rotational Smoothness: By arranging multiple ball bearings 79 in a circular array within the annular groove 77, with the ball bearings 79 slidably engaged in the first annular groove 701 on the inner side of the inner gear ring 75, and simultaneously arranging multiple ball bearings 79 on the outer surface of the inner gear ring 75 and slidably engaged in the second annular groove 702 of the cover 70, the relative rotational motion between the inner gear ring 75 and the lifting cylinder 51 and the cover 70 is completely transformed from sliding friction to rolling friction. The low coefficient of friction of rolling friction significantly reduces the resistance during the rotation of the inner gear ring 75, making the rotation of the massage head assembly 6 smoother and more stable, effectively reducing operating noise, and enhancing the quiet experience for the user.

[0073] II. Enhancing the positioning accuracy of the internal gear ring and ensuring transmission stability: The internal gear ring 75 forms a double radial positioning through the inner first annular groove 701 and the ball 79 in the annular slide groove 77, and the outer ball 79 and the second annular groove 702 of the cover 70. With the help of the cover 70, it is clamped between the closed end of the lifting cylinder 51 and the cover 70 for axial limiting. This can restrict the radial offset and axial movement of the internal gear ring 75 during rotation in all directions, ensuring that the meshing clearance between its internal teeth and the output gear of the second step gear 74 is always consistent, avoiding transmission impact or jamming caused by tooth misalignment, ensuring the continuity and accuracy of rotational power transmission, and thus improving the reliability of the rotational action of the massage head assembly 6.

[0074] Third, load distribution and extended component lifespan: Multiple rollers 79 are evenly distributed in a ring array, which can evenly distribute the loads such as the gravity of the inner gear ring 75 and the massage head assembly 6, as well as the reaction force during massage, onto each roller 79, avoiding component deformation or excessive wear caused by local stress concentration. At the same time, the wear rate of rolling friction is much lower than that of sliding friction, which can significantly extend the service life of mating components such as the inner gear ring 75, the annular groove 77, and the cover 70, and improve the long-term operational reliability of the equipment.

[0075] IV. Simplified Assembly and Maintenance Process: The detachable design of the cover 70 (installed at the closed end of the lifting cylinder 51) makes the assembly of the internal gear ring 75 and the ball bearing 79 more convenient. Simply place the internal gear ring 75 in the corresponding position of the annular groove 77 and insert the ball bearing 79, and then fix it with the cover 70 to complete the positioning. No complicated tooling calibration is required. During later maintenance, only the cover 70 needs to be removed to inspect, clean or replace the ball bearing 79 and the internal gear ring 75, which reduces the difficulty of maintenance and improves production and maintenance efficiency.

[0076] V. Enhanced structural sealing and protection: The fit between the cover 70 and the closed end of the lifting cylinder 51 can form a closed protection for the annular slide groove 77, the internal gear ring 75 and the ball 79, effectively blocking external dust, moisture or impurities from entering the transmission and engagement area, avoiding problems such as ball jamming and poor gear meshing caused by foreign objects, and ensuring the cleanliness and stability of the rotary massage drive mechanism 7 during long-term operation.

[0077] In this embodiment, as Figure 8 and Figure 9 As shown, the lifting abdominal massager of the present invention includes a housing 9, a fixed base 1, a rotating transmission wheel 2, a lifting motor 3, a lifting transmission gear set 4, a lifting transmission wheel 5, and a rotating massage drive mechanism 7, all of which are installed inside the housing 9. A massage head assembly 6 extends outward from the housing 9. Handles 91 are formed at both ends of the housing 9 for handheld use.

[0078] In this embodiment, the lifting abdominal massager of the present invention includes a battery 10 installed inside the outer casing 9 for power supply.

[0079] Any combination of various embodiments of the present invention, provided it does not violate the inventive concept of the present invention, shall be regarded as the content disclosed by the present invention; within the scope of the technical concept of the present invention, any simple modifications to the technical solution and any combination of different embodiments that do not violate the inventive concept of the present invention shall be within the protection scope of the present invention.

Claims

1. A lifting and massaging abdominal device, characterized in that, It comprises a fixed seat (1), a rotating transmission wheel (2), a lifting motor (3), a lifting transmission gear set (4), a lifting transmission wheel (5), a massage head assembly (6) and a rotating massage driving mechanism (7). The rotating transmission wheel (2) is rotatably installed on the fixed seat (1), the lifting motor (3) is installed on the fixed seat (1), and the lifting transmission gear set (4) is rotatably installed on the fixed seat (1). The rotating transmission wheel (2) comprises a rotating cylinder (21) rotatably installed on the fixed seat (1) and a gear disc (22) connected to one end of the rotating cylinder (21), and the output shaft of the lifting motor (3) is in transmission connection with the gear disc (22) through the lifting transmission gear set (4). The lifting transmission wheel (5) comprises a lifting cylinder (51) axially slidably installed on the rotating cylinder (21) and three rolling members (52) annularly arranged on the peripheral wall of the lifting cylinder (51), the peripheral wall of the rotating cylinder (21) is provided with a cam groove (20), the cam groove (20) comprises three wave crest sections and wave trough sections arranged in an annular array, the wave crest sections and the wave trough sections are alternately arranged, and the three rolling members (52) are slidably arranged in the cam groove (20), when the rotating transmission wheel (2) rotates, the three rolling members (52) are driven to slide along the wave crest sections and the wave trough sections of the cam groove (20), so that the lifting cylinder (51) is axially lifted along the rotating cylinder (21). The massage head assembly (6) is rotatably installed on one end of the lifting cylinder (51), and the rotating massage driving mechanism (7) is installed in the lifting cylinder (51) and in transmission connection with the massage head assembly (6).

2. The lifting massaging abdomen device according to claim 1, wherein, The fixed seat (1) comprises a bottom plate (11) and a cover body (12) installed on the bottom plate (11). The bottom plate (11) is provided with a first annular groove (13), and the inner wall of the top end of the cover body (12) is provided with a second annular groove (14). The gear disc (22) is provided with a plurality of first rolling balls (15) arranged in an annular manner on the end face, and the first rolling balls (15) are slidably arranged in the first annular groove (13). The rotating cylinder (21) is provided with a plurality of second rolling balls (16) arranged in an annular manner on the top end face, and the second rolling balls (16) are slidably arranged in the second annular groove (14). The rotating transmission wheel (2) is rotatably clamped between the bottom plate (11) and the cover body (12) through the cooperation of the first rolling balls (15) and the first annular groove (13) and the second rolling balls (16) and the second annular groove (14) at both ends.

3. The lifting massaging abdomen device according to claim 2, wherein, The bottom plate (11) is provided with a through hole (110), and the through hole (110) is provided for the line of the rotating massage driving mechanism (7) in the lifting cylinder (51) to pass through and connect. Both ends of the cover body (12) are open ends, and the top end of the cover body (12) is provided with an opening for the lifting cylinder (51) to pass out.

4. The lifting massaging abdomen device according to claim 2, wherein, The lifting motor (3) and the lifting transmission gear set (4) are installed on the upper surface of the bottom plate (11).

5. The lifting massaging abdomen device according to claim 4, wherein, The bottom plate (11) is provided with a control panel (8) on the lower surface, and the control panel (8) is electrically connected with the lifting motor (3) and the rotating massage driving mechanism (7) respectively.

6. The lifting massaging abdomen device according to claim 1, wherein, The rolling member (52) is a roller or a ball.

7. The lifting massaging abdomen device according to claim 1, wherein, The rotating massage driving mechanism (7) comprises a rotating motor (71), a worm (72), a first stepped gear (73), a second stepped gear (74) and an inner ring gear (75). The rotating motor (71) and the worm (72) are installed in the lifting cylinder (51), and the worm (72) is installed on the output shaft of the rotating motor (71). The first stepped gear (73) and the second stepped gear (74) are meshed and installed in the lifting cylinder (51), and the worm (72) is meshed and cooperated with the worm wheel of the first stepped gear (73). One end of the lifting cylinder (51) is an open end, and the other end is a closed end, the open end of the lifting cylinder (51) is provided with a bottom cover (76), and the bottom cover (76) and the closed end of the lifting cylinder (51) form an installation space, and the rotating motor (71), the worm (72), the first stepped gear (73) and the second stepped gear (74) are installed in the installation space. An annular sliding groove (77) is formed on the outer surface of the closed end of the lifting cylinder (51), the inner ring gear (75) is rotatably installed in the annular sliding groove (77), and the massage head assembly (6) is installed on the inner ring gear (75). A transmission hole (78) is formed in the closed end of the lifting cylinder (51), the output gear of the second stepped gear (74) is exposed through the transmission hole (78) and is meshed and cooperated with the inner ring gear (75).

8. The lifting massaging abdomen device according to claim 7, characterized in that, The rotating massage driving mechanism (7) further comprises a plurality of third balls (79) and a cover (70). A plurality of the third balls (79) are annularly arranged in the annular sliding groove (77), a first circular groove (701) is formed on the inner surface of the inner ring gear (75), and the plurality of third balls (79) in the annular sliding groove (77) are slidingly arranged in the first circular groove (701). A plurality of the third balls (79) are annularly arranged on the outer surface of the inner ring gear (75), a second circular groove (702) is formed on one surface of the cover (70), and the plurality of third balls (79) on the outer side of the inner ring gear (75) are slidingly arranged in the second circular groove (702). The cover (70) is installed on the closed end of the lifting cylinder (51), and the inner ring gear (75) is rotatably clamped between the lifting cylinder (51) and the cover (70).

9. The lifting massaging abdomen device according to any one of claims 1-8, characterized in that, Further comprising a shell (9), the fixed seat (1), the rotating transmission wheel (2), the lifting motor (3), the lifting transmission gear set (4), the lifting transmission wheel (5) and the rotating massage driving mechanism (7) are all installed in the shell (9). The massage head assembly (6) extends outward from the shell (9), and the shell (9) is provided with handles (91) at both ends for hand holding.

10. The lifting massaging abdomen device according to claim 9, wherein, Also included is a battery (10) installed in the shell (9), which is used to supply power to the lifting motor (3), the rotating massage driving mechanism (7) and the control board (8).

Images