Massage head with adjustable massage distance and massage mechanism

Abstract

The utility model discloses a massage head and massage core of adjustable massage spacing, massage head of adjustable massage spacing includes rotation base, rotary head and spring, and rotation base top surface has a plurality of adjustment tooth grooves that are set along the circumferential direction equidistantly, and rotary head is rotatably arranged on rotation base, and the top surface is equipped with the massage convex head that is arranged eccentrically with respect to the rotation center, and the bottom surface has the wave column that is correspondingly matched with the adjustment tooth groove, and spring provides elastic pre -tension for rotary head. Massage core includes core shell, drive mechanism, transmission mechanism, knead subassembly, thump subassembly and massage subassembly, and the massage subassembly is equipped with massage head of adjustable massage spacing, and the eccentric position of massage convex head is changed through the adjustment rotary head position, realizes the multi -gear adjustment of massage spacing, and the structure is simple, and the positioning is reliable.

Description

Technical Field

[0001] This utility model relates to the technical field of massagers, and in particular to a massage head and massage mechanism with adjustable massage spacing. Background Technology

[0002] With the improvement of people's living standards, massagers, as a health care device for relieving fatigue and relaxing the mind and body, have been widely used in daily life. Among them, neck and shoulder massagers are favored by many users because they can specifically massage the neck and shoulder areas.

[0003] In existing technologies, neck massagers mostly use kneading massage to massage corresponding parts of the body. A motor drives a gear set and a rotating shaft to rotate, causing the shoulder and neck massage heads connected to the shaft to perform reciprocating massage movements, thus achieving the kneading massage function. This type of existing neck and shoulder massage component structure is mature and can provide a relatively comfortable massage experience. However, most neck and shoulder massagers still have the following shortcomings: First, the massage heads of existing neck and shoulder massagers are mostly universal and fixed, unable to be adjusted for different users' body structures, resulting in poor adaptability and affecting the massage effect and user experience. Second, even if some products have a spacing adjustment function, their adjustment mechanism is often complex, with a limited adjustment range, and it is difficult to achieve stable and reliable spacing adjustment while ensuring the massage function. Third, most neck and shoulder massagers only have a kneading function and lack a percussion function, failing to meet users' massage needs. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a massage head with adjustable massage spacing.

[0005] To achieve the above objectives, the solution of this utility model is: An adjustable massage head includes a rotating base, a rotating head, and a spring. The top surface of the rotating base has multiple adjustable grooves evenly spaced along the circumferential direction. The rotating head is rotatably mounted on the rotating base. The top surface of the rotating head has a massage protrusion eccentrically positioned relative to the rotation center. The bottom surface of the rotating head has a wave-shaped column that corresponds to and engages with the adjustable grooves. The spring is disposed between the rotating head and the rotating base, providing an elastic preload force to the rotating head towards the rotating base, keeping the wave-shaped column inserted within the adjustable grooves. The center of the rotating base and the center of the rotating head have mutually engaging positioning pins and positioning holes. The positioning pins and positioning holes are clearance-fitted, allowing the rotating head to rotate around the positioning pins and move axially along the positioning pins. The spring is sleeved on the outside of the positioning pins, with one end abutting against the top surface of the rotating base and the other end abutting against the bottom surface of the rotating head.

[0006] With the above technical solution, because the massage protrusion is eccentrically positioned relative to the rotation center of the rotating head, the eccentric position of the massage protrusion changes relative to its initial position when the rotating head rotates around the rotation center, thereby changing the distance between the massage protrusion and the rotation center. When the massage heads are used in pairs (e.g., symmetrically arranged), various massage spacing combinations can be achieved by adjusting the rotation head positions of the left and right massage heads respectively. The elastic preload provided by the spring ensures that the wave column is always inserted into the adjusting tooth groove, achieving circumferential positioning between the rotating head and the rotating base, ensuring that the rotating head will not rotate on its own during the massage process, and the positioning is reliable. During adjustment, simply pull the rotating head upward to disengage the wave column from the adjusting tooth groove, then rotate the rotating head to the desired position, and then release the rotating head. Under the action of the elastic preload of the spring, the wave column re-inserts into the corresponding adjusting tooth groove, thus completing the adjustment. The operation is simple and quick. The fit between the positioning pin and the positioning hole provides the rotating head with a center of rotation and axial guidance, ensuring the stability of the rotating head during rotation and axial movement. The clearance fit between the positioning pin and the positioning hole ensures smooth rotation of the rotating head while allowing it to move up and down axially to disengage and engage the wave column with the adjusting tooth groove. The spring is sleeved on the outside of the positioning pin, resulting in a compact structure. The spring force acts directly between the bottom surface of the rotating head and the top surface of the rotating base, ensuring high preload transmission efficiency.

[0007] Furthermore, the adjusting grooves are arc-shaped grooves, with three to eight grooves in total. Each adjusting groove is radially distributed at equal angles with the center of the rotating base as the center, and adjacent adjusting grooves are connected by a circular arc transition. The number of wave columns is the same as the number of adjusting grooves. The wave columns are radially distributed at equal angles with the rotation center of the rotating head as the center, and the distribution angle of each wave column corresponds to the distribution angle of each adjusting groove. By setting the adjusting grooves as arc-shaped grooves, they are adapted to the shape of the wave columns, facilitating insertion and disengagement. The circular arc transition between adjacent adjusting grooves allows the wave columns to smoothly transition to adjacent adjusting grooves during rotation, reducing adjustment resistance. The number of adjusting grooves, ranging from three to eight, allows for multiple adjustment levels to meet the adjustment needs of different users.

[0008] Furthermore, the rotating base adopts a split structure, including a base body and an outer cover that are interlocked. The outer cover is detachably fastened to the base body, and the base body is provided with the adjustment groove. The rotating head has a positioning post at its center, and the base body has a positioning hole at its center. The adjustment groove is located on the outer periphery of the positioning hole. After the outer cover and the base body are fastened together, a cavity is formed. The positioning post of the rotating head is inserted into the base body and confined within the cavity. The split structure facilitates the assembly and disassembly of the massage head. During installation, the spring is first sleeved on the positioning post of the rotating head, then the positioning post is inserted into the positioning hole of the base body, and then the outer cover is fastened onto the base body to complete the assembly. The cavity formed after the outer cover and the base body are fastened together confines the positioning post of the rotating head inside, preventing the rotating head from coming out of the base body under the action of the spring force, while allowing the rotating head to move and rotate axially within the cavity. The structure is simple and reliable.

[0009] Furthermore, the inner circumference of the top of the rotating base forms a concave rotating step, and the rotating head is provided with a rotating boss that corresponds to and mates with the rotating step. The rotating boss is inserted into the rotating step of the rotating base. The engagement of the rotating boss and the rotating step provides radial support and guidance for the rotating head, keeping it stable during rotation and preventing radial wobbling, thus improving the stability and comfort of the massage. At the same time, the engagement of the rotating boss and the rotating step also limits the maximum axial displacement of the rotating head, preventing it from being excessively pulled out of the rotating base.

[0010] Another objective of this invention is to overcome the shortcomings of the prior art and provide a massage mechanism with adjustable massage intervals.

[0011] To achieve the above objectives, the solution of this utility model is: A massage mechanism, characterized in that it comprises a mechanism shell, a drive mechanism, a transmission mechanism, a kneading component, a percussion component, and a massage component. The transmission mechanism includes a kneading transmission mechanism with a kneading shaft and a percussion transmission mechanism with a percussion shaft. The kneading transmission mechanism connects the drive mechanism and the kneading component, and the percussion transmission mechanism connects the drive mechanism and the percussion component. The kneading component includes an eccentric wheel, a sway wheel, kneading arms, and percussion arms. A set of kneading components is symmetrically arranged on the left and right sides of the kneading shaft. Two eccentric wheels are symmetrically arranged on the kneading shaft. Two percussion arms are rotatably sleeved on the two eccentric wheels. Two sway wheels are sleeved on the outer ends of the eccentric wheels, and the outer ends of the sway wheels form sway slopes. Two kneading arms are rotatably sleeved on the two sway wheels, and the inner ends of the kneading arms are aligned with the sway slopes. The components are abutted together, with an end cap on the outer end of the eccentric wheel, which limits the kneading arm to the eccentric wheel; the percussion assembly includes an eccentric drive shaft, bearing seats, and a connecting rod, with percussion components symmetrically arranged at both ends of the percussion shaft, the eccentric drive shaft being fixedly mounted on the percussion shaft, and two bearing seats respectively mounted on the percussion shaft at the outer ends of the two eccentric drive shafts, the end of the bearing seat facing the kneading component being rotatably connected to one end of the connecting rod, and the other end of the connecting rod being provided with a ball head seat and a universal ball head that cooperate with each other at the bottom end of the percussion arm; the massage assembly includes a kneading massage head and a percussion massage head, the kneading massage head being mounted on the top of the kneading arm, the percussion massage head being mounted on the top of the percussion arm, and at least one of the kneading massage head and the percussion massage head being an adjustable massage spacing massage head.

[0012] Adopting the above technical solution, this utility model massage mechanism integrates both kneading and percussion massage functions. The power of the drive mechanism is transmitted to the kneading and percussion components via a transmission mechanism, enabling the two massage functions to work synergistically. The kneading function uses a kneading transmission mechanism to rotate the kneading shaft. An eccentric wheel and a swing wheel convert the rotational motion into a compound motion of the kneading arm, causing the kneading massage head to perform kneading massage actions. The percussion function uses a percussion transmission mechanism to rotate the percussion shaft. The eccentric transmission shaft converts the rotational motion into the reciprocating motion of the bearing seat and connecting rod. The universal ball joint and ball joint seat work together to drive the percussion arm and percussion massage head to perform percussion massage actions. More importantly, at least one of the kneading and percussion massage heads uses an adjustable massage spacing. Users can adjust the position of the rotating head of the massage head and change the eccentric position of the massage protrusion according to their own body structure characteristics such as shoulder and neck width, thereby achieving multi-level adjustment of the massage spacing, making the massage more tailored to individual needs, improving the massage effect and user experience. In addition, the massage head uses spring preload and the combination of wave column and adjusting tooth groove to achieve positioning, making adjustment simple and quick, and positioning reliable. It will not move on its own during the massage.

[0013] Furthermore, the kneading transmission mechanism includes a first transmission gear meshing with the output shaft of the drive motor, a worm gear fixedly connected to the first transmission gear, a second transmission gear fixedly connected to the worm gear, and a kneading shaft fixedly connected to the second transmission gear; the pounding transmission mechanism includes a drive wheel, a driven wheel, a multi-wedge belt, a one-way needle roller bearing, and a pounding shaft. The drive wheel is fixed on the output shaft of the drive motor, the driven wheel is spaced apart from the drive wheel, the multi-wedge belt connects the drive wheel and the driven wheel, the one-way needle roller bearing is disposed on the driven wheel, and the pounding shaft passes through the center of the driven wheel and the one-way needle roller bearing; the driven wheel and the one-way needle roller bearing are disposed between two eccentric transmission shafts.

[0014] The kneading transmission mechanism achieves speed reduction and torque increase through multi-stage transmission via the first transmission gear, worm gear, and second transmission gear, ensuring the kneading shaft receives appropriate speed and torque. The percussion transmission mechanism transmits power to the percussion shaft via the drive wheel, multi-ribbed belt, and driven wheel, resulting in smooth transmission and low noise. A one-way needle roller bearing is mounted on the driven wheel, enabling unidirectional transmission control of the percussion shaft. When the drive motor rotates forward, the driven wheel drives the percussion shaft to rotate via the one-way needle roller bearing, achieving the percussion function. When the drive motor rotates in reverse, the one-way needle roller bearing idles, the percussion shaft does not rotate, and only the kneading shaft rotates, achieving a pure kneading function. This design requires no additional control mechanism or clutch; switching between "kneading + percussion" mode and "pure kneading" mode is achieved simply by changing the rotation direction of the drive motor. It is simple in structure, convenient to control, and low in cost, meeting diverse massage needs of users.

[0015] Furthermore, the bearing housing has a rotating groove at the end facing the kneading assembly. One end of the connecting rod is inserted into the rotating groove, and the connecting rod is rotatably fixed to the bearing housing by a pin. The cooperation between the rotating groove and the pin enables a rotatable connection between the connecting rod and the bearing housing, resulting in a simple structure, reliable connection, and easy assembly and disassembly. The connecting rod can rotate left and right, adapting to the angular changes generated during the rotation of the eccentric drive shaft, ensuring smooth transmission of motion, and making the reciprocating motion of the percussion massage head more stable and continuous.

[0016] Furthermore, the outer casing of the mechanism includes an upper cover, a lower cover, and a base. The upper cover is fastened to the lower cover, and the lower cover is locked in the middle of the base. The drive mechanism includes a drive motor, a battery, and a center plate. The battery and center plate are disposed between the lower cover and the base. The battery is connected to the center plate, and the drive motor is connected to the center plate. The left end of the base and the lower cover form a left massage area for the massage components to operate, and the right end of the base and the lower cover form a right massage area for the massage components to operate. The outer casing of the mechanism adopts a split structure of upper cover, lower cover, and base, which facilitates assembly and maintenance and replacement of internal components. The drive mechanism is integrated in the space between the lower cover and the base, resulting in a compact structure. The battery powers the drive motor, and the center plate controls the start, stop, speed, and direction of the drive motor. The arrangement of the left and right massage areas provides ample space for the massage components to operate, allowing the kneading arms and percussion arms to move freely within their respective areas, avoiding interference with the outer casing of the mechanism, and ensuring smooth execution of the massage actions.

[0017] Furthermore, ball joints are provided at the bottom ends of the two striking arms, and a universal ball joint is rotatably mounted on the ball joint at the other end of the connecting rod of the striking assembly. The cooperation between the universal ball joint and the ball joint enables universal rotational connection between the striking arm and the connecting rod, allowing the striking arm to move in multiple degrees of freedom, adapting to the complex motion trajectory generated during the striking process, ensuring that the striking massage head always conforms to the surface of the human body, and improving the comfort and effectiveness of the massage. At the same time, the universal ball joint has a simple structure, flexible rotation, and good wear resistance, and can withstand repeated impacts during the striking process.

[0018] Furthermore, the kneading massage head is a fixed massage head, with staggered massage seats at the top of the kneading arm, each seat housing a massage head. The percussion massage head is an adjustable massage spacing massage head; various massage spacing combinations can be achieved by adjusting the rotation positions of the left and right percussion massage heads. The fixed structure of the kneading massage head ensures the stability and consistency of the kneading action; the staggered massage seats at the top of the kneading arm achieve a pinching massage effect, resulting in a better massage effect. The adjustable structure of the percussion massage head allows users to flexibly adjust the massage spacing according to their needs, making the percussion massage more precise on the target area. By adjusting the rotation positions of the left and right percussion massage heads, various massage spacing combinations can be achieved, such as the shortest time interval when both ends face inward, the longest time interval when both faces outward, and a centered time interval when one inward and one outward, meeting the personalized needs of users with different body types and improving the targeting and effectiveness of the massage. Attached Figure Description

[0019] Figure 1 This is an exploded view of the massage mechanism of this utility model.

[0020] Figure 2 This is a schematic diagram of the massage mechanism of this utility model.

[0021] Figure 3 This is an exploded view of the kneading component of this utility model.

[0022] Figure 4 This is a schematic diagram of the kneading component of this utility model.

[0023] Figure 5 This is an exploded view of the hammering component of this utility model.

[0024] Figure 6 This is a schematic diagram of the hammering assembly of this utility model.

[0025] Figure 7 This is a cross-sectional view of the massage mechanism and kneading shaft of this utility model.

[0026] Figure 8 This is a cross-sectional view of the massage mechanism and the percussion shaft of this utility model.

[0027] Figure 9 This is a schematic diagram of the drive motor of this utility model.

[0028] Figure 10 This is an exploded view of the percussion massage head of this utility model.

[0029] Figure 11 This is a schematic diagram of the structure of the rotating head of this utility model.

[0030] Label Explanation: A. Mechanism housing; A1. Top cover; A2. Bottom cover; A3. Base; B. Drive mechanism; B1. Drive motor; B2. Battery; B3. Center plate; C. Transmission mechanism; C1. Kneading transmission mechanism; C2. Percussion transmission mechanism; D. Kneading assembly; E. Percussion assembly; F. Massage assembly; 1. First transmission gear; 2. Worm gear; 3. Second transmission gear; 4. Kneading shaft; 5. Drive wheel; 6. Driven wheel; 7. Multi-ribbed belt; 8. One-way needle roller bearing; 9. Percussion shaft; 10. Eccentric wheel; 11. Swing wheel; 12. 13. Kneading arm; 14. Percussion arm; 15. End cap; 16. Universal ball joint; 17. Eccentric drive shaft; 18. Bearing seat; 19. Connecting rod; 20. Rotating groove; 21. Shaft pin; 22. Kneading massage head; 23. Percussion massage head; 24. Rotating base; 25. Rotating head; 26. Spring; 27. Adjusting tooth groove; 28. Massage protrusion; 29. ​​Wave column; 30. Positioning column; 31. Positioning hole; 231. Ball joint seat; 232. Base body; 233. Outer cover; 233. Rotating step; 241. Rotating boss. Detailed Implementation

[0031] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] like Figures 1 to 11 As shown, this utility model discloses a massage mechanism, including a mechanism housing A, a drive mechanism B, a transmission mechanism C, a kneading component D, a percussion component E, and a massage component F.

[0034] The outer casing A of the mechanism includes an upper cover A1, a lower cover A2, and a base A3. The upper cover A1 is fastened to the lower cover A2, and the lower cover A2 is locked in the middle of the base A3. The left end of the base A3 and the lower cover A2 form a left massage area for the massage component F to operate, and the right end of the base A3 and the lower cover A2 form a right massage area for the massage component F to operate.

[0035] The drive mechanism B includes a drive motor B1, a battery B2, and a center plate B3. The battery B2 and the center plate B3 are located between the lower cover A2 and the base A3. The battery B2 is connected to the center plate B3, and the drive motor B1 is connected to the center plate B3. The center plate B3 is equipped with a control circuit for controlling the start, stop, speed, and direction of the drive motor B1.

[0036] The transmission mechanism C includes a kneading transmission mechanism C1 and a pounding transmission mechanism C2. The kneading transmission mechanism C1 includes a first transmission gear 1 meshing with the output shaft of the drive motor B1, a worm gear 2 fixedly connected to the first transmission gear 1, a second transmission gear 3 fixedly connected to the worm gear 2, and a kneading shaft 4 fixedly connected to the second transmission gear 3. The pounding transmission mechanism C2 includes a drive wheel 5, a driven wheel 6, a multi-wedge belt 7, a one-way needle roller bearing 8, and a pounding shaft 9. The drive wheel 5 is fixed on the output shaft of the drive motor B1. The driven wheel 6 is spaced apart from the drive wheel 5. The multi-wedge belt 7 connects the drive wheel 5 and the driven wheel 6. The one-way needle roller bearing 8 is disposed on the driven wheel 6 to control the one-way transmission of the driven wheel 6. The pounding shaft 9 passes through the center of the driven wheel 6 and the one-way needle roller bearing 8.

[0037] The kneading assembly D includes an eccentric wheel 10, a sway wheel 11, kneading arms 12, and a pounding arm 13. A set of kneading assemblies D is symmetrically arranged on the left and right sides of the kneading shaft 4. Two eccentric wheels 10 are symmetrically arranged on the kneading shaft 4. Two pounding arms 13 are rotatably sleeved on the two eccentric wheels 10. Two sway wheels 11 are arranged at the outer ends of the eccentric wheels 10. The outer ends of the sway wheels 11 form swaying slopes. Two kneading arms 12 are rotatably sleeved on the two sway wheels 11, and the inner ends of the kneading arms 12 abut against the swaying slopes. The outer ends of the sway wheels 11 are provided with end caps 14, which limit the kneading arms 12 on the sway wheels 11. The bottom ends of the two hammer arms 13 are provided with ball head seats and universal ball heads that cooperate with each other. In the embodiment shown in the figure, ball head seats 31 are provided at the bottom ends of the two hammer arms 13, and the hammer assembly E has universal ball heads 15 that are rotatably provided on the ball head seats 31.

[0038] The pounding assembly E includes an eccentric drive shaft 16, a bearing seat 17, and a connecting rod 18. The pounding assemblies E are symmetrically arranged at the left and right ends of the pounding shaft 9. The eccentric drive shaft 16 is fixedly mounted on the pounding shaft 9. The driven wheel 6 and the one-way needle roller bearing 8 are arranged between the two eccentric drive shafts 16. The two bearing seats 17 are arranged on the pounding shaft 9 at the outer ends of the two eccentric drive shafts 16. The end of the bearing seat 17 facing the kneading assembly D is rotatably connected to one end of the connecting rod 18. In this embodiment, the end of the bearing seat 17 facing the kneading assembly D is provided with a rotating groove 19. One end of the connecting rod 18 is inserted into the rotating groove 19 and is rotatably fixed to the bearing seat 17 by a shaft pin 20. The other end of the connecting rod 18 is provided with the universal ball head 15 (if the bottom end of the pounding arm 13 is a universal ball head, then the other end of the connecting rod 18 is a ball head seat).

[0039] The massage component F includes a kneading massage head 21 and a percussion massage head 22. The kneading massage head 21 is mounted on the top of the kneading arm 12, and the percussion massage head 22 is mounted on the top of the percussion arm 13. In this embodiment, the percussion massage head 22 is an adjustable massage spacing massage head. Of course, according to actual needs, all or one of the kneading massage heads 21 can also be designed as adjustable massage spacing massage heads. The adjustable massage head includes a rotating base 23, a rotating head 24, and a spring 25. The top surface of the rotating base 23 has multiple adjusting grooves 26 evenly spaced along the circumferential direction. The rotating head 24 is rotatably mounted on the rotating base 23. The top surface of the rotating head 24 has a massage protrusion 27 eccentrically positioned relative to the rotation center, and the bottom surface of the rotating head 24 has wave-shaped posts 28 that correspond to and cooperate with the adjusting grooves 26. The spring 25 is disposed between the rotating head 24 and the rotating base 23, providing an elastic preload force to the rotating head 24 towards the rotating base 23, keeping the wave-shaped posts 28 inserted within the adjusting grooves 26. The percussion massage head can select rotating heads 24 with different massage effects according to different massage needs. The massage mechanism can be configured with multiple replaceable rotating heads 24, such as… Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 10 Four different rotating heads 24 with massage protrusions 27 are shown. Because the massage protrusions 27 are offset from the rotation center of the rotating head 24, when the rotating head 24 rotates around the rotation center, the offset position of the massage protrusions 27 changes relative to their initial position, and the distance between the left and right massage protrusions 27 changes. By adjusting the positions of the rotating heads 24 at both ends of the massage heads, various combinations of massage distances can be achieved. For example, when both rotating heads 24 at both ends are rotated to a position where the massage protrusions 27 face inwards, the massage distance is the smallest; when both are rotated to a position where the massage protrusions 27 face outwards, the massage distance is the largest; when one end faces inwards and the other outwards, the massage distance is centered. Through the positioning of the four adjusting grooves 26, each massage head can achieve four position adjustments, and the combination of the left and right ends can achieve various different massage distances.

[0040] The cross-section of the adjusting groove 26 is arc-shaped or V-shaped, used to cooperate with the wave column 28 for positioning. In this embodiment, the adjusting groove 26 is an arc-shaped groove, and there are four adjusting grooves 26, with an included angle of 90 degrees between adjacent adjusting grooves 26. Depending on actual needs, the number of adjusting grooves 26 can be set to three to eight, with the included angle between adjacent adjusting grooves 26 corresponding to 120 degrees to 45 degrees. Each adjusting groove 26 is radially distributed at equal angles with the center of the rotating base 23 as the center, and adjacent adjusting grooves 26 are connected by an arc transition; the number of wave columns 28 is the same as the number of adjusting grooves 26, and the wave columns 28 are radially distributed at equal angles with the rotation center of the rotating head 24 as the center, and the distribution angle of each wave column 28 corresponds to the distribution angle of each adjusting groove 26.

[0041] The center of the rotating base 23 and the center of the rotating head 24 have a positioning post 29 and a positioning hole 30 that cooperate with each other. The positioning post 29 and the positioning hole 30 are clearance-fitted, so that the rotating head 24 can rotate around the positioning post 29 and move along the axial direction of the positioning post 29. The outer diameter of the positioning post 29 is slightly smaller than the inner diameter of the positioning hole 30, so that the rotating head 24 can rotate smoothly around the positioning post 29 and move up and down along the axial direction of the positioning post 29.

[0042] The spring 25 is sleeved on the outside of the positioning post 29, with one end of the spring 25 abutting against the top surface of the rotating base 23 and the other end abutting against the bottom surface of the rotating head 24. After installation, the spring 25 is always in a compressed state, providing an elastic preload force to the rotating head 24 toward the rotating base 23, so that the wave post 28 on the bottom surface of the rotating head 24 is kept inserted into the adjusting groove 26 on the top surface of the rotating base 23, thereby achieving circumferential positioning between the rotating head 24 and the rotating base 23.

[0043] In this embodiment, the rotating base 23 adopts a split structure, including a base body 231 and an outer cover 232 that are interlocked. The base body 231 is fixedly mounted on the hammer arm 13, and the outer cover 232 is detachably fastened to the base body 231. The base body 231 is provided with the adjustment groove 26. The center of the rotating head 24 is provided with the positioning post 29, and the center of the base body 231 is provided with the positioning hole 30. The adjustment groove 26 is provided on the outer periphery of the positioning hole 30. After the outer cover 232 and the base body 231 are fastened together, a cavity is formed. After the positioning post 29 of the rotating head 24 is inserted into the base body 231, it is limited in the cavity by fasteners (such as buckles, screws, etc.).

[0044] The top inner circumference of the rotating base 23 forms a concave rotating step 233, and the rotating head 24 is provided with a rotating boss 241 that corresponds to and cooperates with the rotating step 233. The rotating boss 241 is inserted into the rotating step 233 of the rotating base 23.

[0045] The overall power transmission of the massage mechanism of this utility model is as follows: When the user starts the massage mechanism, the drive motor B1 starts to operate under the control of the central plate B3. The output shaft of the drive motor B1 transmits power in two directions simultaneously: First, the kneading power transmission path: the worm section on the output shaft of the drive motor B1 meshes with the first transmission gear 1 (worm wheel), the first transmission gear 1 drives the worm 2 to rotate, the gear section on the worm 2 meshes with the second transmission gear 3, the second transmission gear 3 drives the kneading shaft 4 to rotate. The rotational motion of the kneading shaft 4 is transmitted to the kneading components D on the left and right sides. Second, the percussion power transmission path: the drive wheel 5 on the output shaft of the drive motor B1 drives the driven wheel 6 to rotate through the multi-wedge belt 7. When the drive motor B1 rotates forward, the one-way needle roller bearing 8 is in a locked state, and the driven wheel 6 drives the percussion shaft 9 to rotate synchronously through the one-way needle roller bearing 8; when the drive motor B1 rotates in reverse, the one-way needle roller bearing 8 is in an idle state, the driven wheel 6 cannot drive the percussion shaft 9 to rotate, and the percussion function stops.

[0046] The kneading massage mechanism operates as follows: When the kneading shaft 4 rotates, it drives the eccentric wheel 10 and the swing wheel 11 to rotate synchronously. The swing ramp at the outer end of the swing wheel 11 abuts against the inner end of the kneading arm 12. When the swing wheel 11 rotates, the swing ramp pushes the kneading arm 12 to produce an axial reciprocating swing motion. Therefore, the kneading massage head 21 at the top of the kneading arm 12 performs a compound motion—rotating around the kneading shaft 4 while swinging axially back and forth, simulating the kneading action of a human hand to knead and massage the user's shoulders and neck. At the same time, under the combined constraint of the rotational driving force of the eccentric wheel 10 and the connecting rod 18 of the ball head seat 31 and the hammering assembly E, the percussion arm 13 converts the rotational motion into up-and-down linear motion, so that the percussion massage head 22 on the percussion arm 13 cooperates with the kneading massage head 21 to achieve a clamping and relaxing massage effect.

[0047] The percussion massage mechanism operates as follows: When the drive motor B1 rotates forward, the percussion shaft 9 rotates synchronously under the drive of the one-way needle roller bearing 8. The eccentric transmission shaft 16 on the percussion shaft 9 converts the rotational motion into the reciprocating linear motion of the bearing seat 17. The bearing seat 17 is connected to the connecting rod 18 through the rotating groove 19 and the shaft pin 20, driving the connecting rod 18 to reciprocate. The universal ball joint 15 at the other end of the connecting rod 18 engages with the ball joint seat 31 at the bottom of the percussion arm 13, transmitting the reciprocating motion to the percussion arm 13, causing the percussion massage head 22 at the top of the percussion arm 13 to perform up-and-down reciprocating percussion motion, simulating the percussion massage of a human hand.

[0048] The massage spacing adjustment process is as follows: When the user needs to adjust the massage spacing, they pull the rotating head 24 of the percussion massage head 22 upwards with their fingers. The rotating head 24 overcomes the elastic preload of the spring 25 and moves upwards along the axial direction of the positioning post 29. The wave column 28 on the bottom surface of the rotating head 24 disengages from the adjusting tooth groove 26 on the top surface of the rotating base 23. While maintaining the pulled state, the rotating head 24 is rotated around the positioning post 29 to the desired position. The rotating boss 241 rotates within the rotating step 233, providing radial guidance for the rotating head 24. During rotation, the wave column 28 slides into the position of the next adjusting tooth groove 26 along the arc transition surface between adjacent adjusting tooth grooves 26. The rotating head 24 is released, and under the action of the elastic preload of the spring 25, the rotating head 24 automatically moves downwards, and the wave column 28 re-inserts into the corresponding adjusting tooth groove 26, achieving circumferential positioning. By adjusting the positions of the rotating heads 24 of the percussion massage heads 22 at both ends, various massage spacing combinations can be achieved.

[0049] This utility model's massage mechanism supports two massage modes: a kneading + percussion mode and a pure kneading mode. In this mode, the drive motor B1 rotates forward, and both the kneading shaft 4 and the percussion shaft 9 rotate simultaneously. The kneading massage head 21 performs a kneading motion, and the percussion massage head 22 performs a percussion motion, with both massage functions occurring concurrently. In the pure kneading mode, the drive motor B1 rotates in reverse. The kneading shaft 4 continues to rotate, but due to the free rotation of the one-way needle bearing 8, the percussion shaft 9 does not rotate. Only the kneading massage head 21 performs a kneading motion, and the percussion function stops. Users can select different massage modes via the control panel or remote control. The central plate B3 controls the direction and speed of the drive motor B1 according to user commands, enabling flexible switching between massage modes.

[0050] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A massage head with adjustable massage spacing, characterized in that: The device includes a rotating base (23), a rotating head (24), and a spring (25). The top surface of the rotating base (23) has multiple adjusting grooves (26) evenly spaced along the circumferential direction. The rotating head (24) is rotatably mounted on the rotating base (23). The top surface of the rotating head (24) has a massage protrusion (27) eccentrically positioned relative to the rotation center. The bottom surface of the rotating head (24) has wave-shaped columns (28) that correspond to and cooperate with the adjusting grooves (26). The spring (25) is disposed between the rotating head (24) and the rotating base (23), and the spring (25) provides the rotating head (24) with a direction of rotation. The elastic preload of the rotating base (23) keeps the wave column (28) inserted in the adjusting tooth groove (26); the center of the rotating base (23) and the center of the rotating head (24) have a positioning column (29) and a positioning hole (30) that cooperate with each other. The positioning column (29) and the positioning hole (30) are in clearance fit, so that the rotating head (24) can rotate around the positioning column (29) and move along the axial direction of the positioning column (29); the spring (25) is sleeved on the outside of the positioning column (29), one end of the spring (25) abuts against the top surface of the rotating base (23), and the other end abuts against the bottom surface of the rotating head (24).

2. The massage head with adjustable massage spacing according to claim 1, characterized in that: The adjusting groove (26) is an arc-shaped groove. The number of adjusting grooves (26) is three to eight. Each adjusting groove (26) is radially distributed at equal angles with the center of the rotating base (23) as the center. Adjacent adjusting grooves (26) are connected by a circular arc transition. The number of wave columns (28) is the same as the number of adjusting grooves (26). The wave columns (28) are radially distributed at equal angles with the rotation center of the rotating head (24) as the center. The distribution angle of each wave column (28) corresponds to the distribution angle of each adjusting groove (26).

3. The massage head with adjustable massage spacing according to claim 1, characterized in that: The rotating base (23) adopts a split structure, including a base body (231) and an outer cover (232) that are interlocked. The outer cover (232) is detachably fastened to the base body (231). The base body (231) is provided with the adjustment groove (26). The center of the rotating head (24) is provided with the positioning post (29). The center of the base body (231) is provided with the positioning hole (30). The adjustment groove (26) is located on the outer periphery of the positioning hole (30). After the outer cover (232) and the base body (231) are fastened together, a cavity is formed. After the positioning post (29) of the rotating head (24) is inserted into the positioning hole (30) of the base body (231), it is limited in the cavity by fasteners.

4. The massage head with adjustable massage spacing according to claim 3, characterized in that: The top inner circumference of the rotating base (23) forms a concave rotating step (233), and the rotating head (24) is provided with a rotating boss (241) that corresponds to and cooperates with the rotating step (233). The rotating boss (241) is inserted into the rotating step (233) of the rotating base (23).

5. A massage mechanism, characterized in that: The device includes a movement housing (A), a drive mechanism (B), a transmission mechanism (C), a kneading assembly (D), a percussion assembly (E), and a massage assembly (F). The transmission mechanism (C) includes a kneading transmission mechanism (C1) with a kneading shaft (4) and a percussion transmission mechanism (C2) with a percussion shaft (9). The kneading transmission mechanism (C1) connects the drive mechanism (B) and the kneading assembly (D). The percussion transmission mechanism (C2) connects the drive mechanism (B) and the percussion assembly (E). The kneading assembly (D) includes an eccentric wheel (10) and a sway wheel (11). A set of kneading components (D) is symmetrically arranged on the left and right sides of the kneading shaft (4) with kneading arms (12) and pounding arms (13). Two eccentric wheels (10) are symmetrically arranged on the kneading shaft (4). Two pounding arms (13) are rotatably fitted on the two eccentric wheels (10). Two eccentric wheels (11) are fitted on the outer ends of the eccentric wheels (10). The outer ends of the eccentric wheels (11) form eccentric inclined surfaces. Two kneading arms (12) are rotatably fitted on the two eccentric wheels (11), and the inner ends of the kneading arms (12) abut against the eccentric inclined surfaces. 11) The outer end is provided with an end cap (14), which limits the kneading arm (12) on the eccentric wheel (11); the pounding assembly (E) includes an eccentric drive shaft (16), a bearing seat (17) and a connecting rod (18). The pounding assembly (E) is symmetrically arranged at the left and right ends of the pounding shaft (9). The eccentric drive shaft (16) is fixedly arranged on the pounding shaft (9). The two bearing seats (17) are respectively arranged on the pounding shaft (9) at the outer ends of the two eccentric drive shafts (16). The end of the bearing seat (17) facing the kneading assembly (D) is connected to the connecting rod (18). One end of the connecting rod (18) is rotatably connected to the other end of the connecting rod (12), and the other end of the connecting rod (18) and the bottom end of the pounding arm (13) are provided with a ball head seat and a universal ball head that cooperate with each other; the massage assembly (F) includes a kneading massage head (21) and a pounding massage head (22). The kneading massage head (21) is installed at the top of the kneading arm (12), and the pounding massage head (22) is installed at the top of the pounding arm (13). At least one of the kneading massage head (21) and the pounding massage head (22) adopts a massage head with adjustable massage interval as described in any one of claims 1 to 4.

6. A massage mechanism according to claim 5, characterized in that: The kneading transmission mechanism (C1) includes a first transmission gear (1) meshing with the output shaft of the drive motor (B1), a worm gear (2) fixedly connected to the first transmission gear (1), a second transmission gear (3) fixedly connected to the worm gear (2), and a kneading shaft (4) fixedly connected to the second transmission gear (3); the pounding transmission mechanism (C2) includes a drive wheel (5), a driven wheel (6), a multi-wedge belt (7), a one-way needle roller bearing (8), and a pounding shaft (9). The drive wheel (5) is fixed on the output shaft of the drive motor (B1). The driven wheel (6) is spaced apart from the drive wheel (5). The multi-wedge belt (7) connects the drive wheel (5) and the driven wheel (6). The one-way needle roller bearing (8) is located on the driven wheel (6). The pounding shaft (9) passes through the center of the driven wheel (6) and the one-way needle roller bearing (8). The driven wheel (6) and the one-way needle roller bearing (8) are located between two eccentric transmission shafts (16).

7. A massage mechanism according to claim 5, characterized in that: The bearing seat (17) has a rotating groove (19) at one end facing the kneading assembly (D). One end of the connecting rod (18) is inserted into the rotating groove (19), and the connecting rod (18) is rotatably fixed on the bearing seat (17) by a shaft pin (20).

8. A massage mechanism according to claim 5, characterized in that: The outer casing (A) of the mechanism includes an upper cover (A1), a lower cover (A2), and a base (A3). The upper cover (A1) is fastened to the lower cover (A2), and the lower cover (A2) is locked in the middle of the base (A3). The drive mechanism (B) includes a drive motor (B1), a battery (B2), and a center plate (B3). The battery (B2) and the center plate (B3) are disposed between the lower cover (A2) and the base (A3). The battery (B2) is connected to the center plate (B3), and the drive motor (B1) is connected to the center plate (B3). The left end of the base (A3) and the lower cover (A2) form a left massage area for the massage component (F) to operate, and the right end of the base (A3) and the lower cover (A2) form a right massage area for the massage component (F) to operate.

9. A massage mechanism according to claim 5, characterized in that: The bottom ends of the two hammering arms (13) are provided with ball head seats (31), and the other end of the connecting rod (18) of the hammering assembly (E) is provided with a universal ball head (15) rotatably mounted on the ball head seat (31).

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