A kneading hammer massage movement and massage apparatus

Abstract

The utility model relates to massage equipment technical field, concretely relates to a kind of kneading hammer massage movement and massager, it is applicable to massage chair, massage pad, massage pillow and other health care instruments.The first output shaft of driving mechanism is rotated by transmission mechanism drive pinch shaft, and pinch shaft drives the synchronous rotation of pinch eccentric wheel and knead inclined plane wheel of both ends at two ends.The reciprocating swing of pressing arm is generated when pinch eccentric wheel rotates due to its eccentric structure, and the rotation of knead inclined plane wheel drives knead arm to generate swing and axial movement through inclined plane, and the function of knead and pinch is realized by the two of same side.The second output shaft of driving mechanism is rotated by one-way transmission mechanism drive beating eccentric shaft, and the end of beating eccentric shaft drives pressing arm through beating connecting rod, to realize beating action.Knead function and beating function are integrated in the same movement, and knead and beating two actions are independent and do not interfere with each other, which enriches massage method, and simplifies movement structure.

Description

Technical Field

[0001] This utility model relates to the field of massage equipment technology, specifically to a kneading hammer massage mechanism and massage device, which is applicable to health care devices such as massage chairs, massage mats, and massage pillows. Background Technology

[0002] As people's living standards improve, massage and health care equipment is becoming increasingly popular. Existing massage mechanisms typically only have a single massage function, such as kneading or percussion. To achieve a richer massage experience, some massage devices require two independent drive motors to drive the kneading and percussion mechanisms respectively. This results in a large overall size, complex structure, and high manufacturing costs for the mechanism, and also presents significant challenges in synchronizing and spatially arranging the two motors.

[0003] Furthermore, while some integrated massage mechanisms attempt to drive kneading and percussion simultaneously using a single motor, they often suffer from problems such as lengthy transmission chains, mutual interference between movements, insufficient massage intensity, or low frequency. In particular, when both kneading and percussion functions are driven by the same motor through a fixed transmission ratio, the kneading and percussion movements cannot be controlled independently. Users cannot choose between kneading only or a combination of kneading and percussion according to their personal preferences, reducing the flexibility and comfort of use. Utility Model Content

[0004] The purpose of this utility model is to provide a kneading and hammering massage mechanism and a massage device, which aims to integrate kneading and hammering actions by simultaneously driving the pinching shaft and the eccentric hammering shaft through a single drive mechanism, while ensuring that the two actions are independent and do not interfere with each other, and making the overall structure of the mechanism compact, low in cost and versatile in function.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A kneading massage mechanism, comprising: A drive mechanism having a first output shaft and a second output shaft, the first output shaft and the second output shaft being located at opposite ends of the drive mechanism and coaxially arranged; The drive mechanism includes a clamping shaft and a hammering eccentric shaft, which are arranged parallel to each other and located at opposite ends. Both the clamping shaft and the hammering eccentric shaft are perpendicular to the first output shaft. The middle part of the clamping shaft is connected to the first output shaft, and the middle part of the hammering eccentric shaft is connected to the second output shaft in a unidirectional manner. A first gear is rotatably mounted on the axial middle section of the clamping shaft. The first gear includes an integrally formed first helical tooth and a first straight tooth. The first helical tooth is connected to the first output shaft, and the first straight tooth meshes with a second gear fixedly mounted on a gear connecting shaft. A third gear is also fixedly mounted on the gear connecting shaft, and the third gear meshes with a fourth gear fixedly mounted on the middle part of the clamping shaft. Two clamping eccentric wheels are respectively fixedly sleeved on both ends of the clamping shaft; Two pressing arms, each pressing arm is correspondingly sleeved on one of the clamping eccentric wheels, and each pressing arm is provided with a first massage head; Two hammering links, one end of each hammering link is hinged to the corresponding pressing arm, and the other end of each hammering link is sleeved on the same side end of the hammering eccentric shaft; Two kneading inclined rollers are respectively fixedly sleeved at both ends of the clamping shaft and located outside the two clamping eccentric rollers; Two kneading arms, each kneading arm being fitted onto the outer wall of one of the kneading inclined wheels, and each kneading arm being provided with a second massage head.

[0006] Furthermore, the first output shaft is a single-helix worm gear, and the second output shaft is a multi-helix worm gear.

[0007] Furthermore, a helical gear is sleeved in the middle of the hammering eccentric shaft, and the gear surface of the helical gear is connected to the second output shaft for transmission. A limit groove is opened at one end of the helical gear, and a one-way bearing is embedded in the limit groove. The one-way bearing is sleeved in the middle of the hammering eccentric shaft, and the helical gear is connected to the hammering eccentric shaft for one-way transmission through the one-way bearing.

[0008] Furthermore, a first retaining ring is provided at the middle of the hammering eccentric shaft corresponding to the opening of the limiting groove, and a first wear-resistant pad is sleeved between the middle of the hammering eccentric shaft and the opening end face of the limiting groove corresponding to the first retaining ring, and the first wear-resistant pad contacts the end face of the one-way bearing; a second retaining ring is provided at the middle of the hammering eccentric shaft corresponding to the end of the helical gear away from the opening of the limiting groove, and a second wear-resistant pad is sleeved between the middle of the hammering eccentric shaft and the helical gear corresponding to the second retaining ring, and the second wear-resistant pad contacts the end face of the helical gear.

[0009] Furthermore, the inner wall of the limiting groove is polygonal, and the inner wall of the limiting groove is adapted to the outer wall of the one-way bearing.

[0010] Furthermore, the pressing arm is L-shaped, and a first ring is provided at the bend of the L-shape of the pressing arm. The first ring is sleeved on the corresponding clamping eccentric wheel. The first massage head is provided at the long side end of the pressing arm corresponding to the L-shape, and the short side end of the pressing arm corresponding to the L-shape is hinged to one end of the corresponding hammering connecting rod.

[0011] Furthermore, one end of the kneading arm is provided with a second ring, which is sleeved on the outer wall of the corresponding kneading inclined wheel. A limiting rod is integrally formed on the second ring, and the limiting rod is embedded in a strip-shaped limiting groove on the inner wall of the outer housing. The extending direction of the strip-shaped limiting groove is the same as the axial direction of the kneading inclined wheel. The other end of the kneading arm is provided with two extension columns extending in different directions. Each extension column is sleeved with a massage wheel. The two massage wheels are arranged opposite to each other and spaced apart, and together they form the second massage head.

[0012] Furthermore, the two clamping eccentric wheels are located inside the two kneading inclined wheels, and the other end of the hammering connecting rod is sleeved on the same side end of the hammering eccentric shaft through a bearing.

[0013] A massage device, comprising the aforementioned kneading hammer massage mechanism.

[0014] The beneficial effects of this utility model are: This utility model provides a kneading and hammering massage mechanism. The first output shaft of the drive mechanism drives the pinching shaft to rotate via a transmission mechanism. The pinching shaft drives the pinching eccentric wheels and the kneading inclined wheels at both ends to rotate synchronously. When the pinching eccentric wheels rotate, due to their eccentric structure, the pressing arms fitted on them oscillate back and forth. When the kneading inclined wheels rotate, they drive the kneading arms to oscillate and move axially through their inclined surfaces. The two wheels, located on the same side, work together to achieve the functions of kneading and pinching, i.e., the kneading action, used to pinch the trapezius muscles on both sides of the back of the neck. At the same time, the second output shaft of the drive mechanism drives the percussion eccentric shaft to rotate via a one-way transmission mechanism. The end of the percussion eccentric shaft drives the pressing arms through a percussion connecting rod to achieve the percussion action. Thus, a single motor can simultaneously drive both kneading and percussion massage actions. By integrating the kneading and percussion functions into the same mechanism, the two actions are independent and do not interfere with each other. This not only enriches the massage techniques but also simplifies the mechanism structure, reduces manufacturing costs, and improves the integration and reliability of the massage mechanism. At the same time, the kneading and percussion actions are arranged side by side along the axis of the pinching shaft, making the overall structure of the mechanism compact and suitable for installation in small massage device housings. Attached Figure Description

[0015] Figure 1 The diagram shown is a first-view structural schematic of a kneading hammer massage mechanism according to this embodiment. Figure 2 The diagram shown is a second-view structural schematic of a kneading hammer massage mechanism according to this embodiment. Figure 3 The diagram shown is an exploded view of the structure of a kneading hammer massager core according to this embodiment; Figure 4 As shown Figure 1 The main view; Figure 5 As shown Figure 1 Side view; Figure 6 As shown Figure 1 Top view; Figure 7 The diagram shown is a first-view structural schematic of a kneading hammer massage mechanism (excluding the housing) according to this embodiment. Figure 8 The diagram shown is a second-view structural schematic of a kneading hammer massage mechanism (excluding the housing) according to this embodiment. Figure 9 As shown Figure 8 A magnified view of a section at point A in the middle; Figure 10 As shown Figure 7 The main view; Figure 11 As shown Figure 7 Side view; Figure 12 As shown Figure 7 Top view; Explanation of icon numbers: 1. Drive mechanism; 11. First output shaft; 12. Second output shaft; 2. Clamping shaft; 21. First gear; 211. First helical tooth section; 212. First straight tooth section; 22. Fourth gear; 3. Hammered eccentric shaft; 31. Helical gear; 311. Limiting groove; 312. One-way bearing; 32. First retaining ring; 33. First wear-resistant pad; 34. Second retaining ring; 35. Second wear-resistant pad; 4. Clamping the eccentric wheel; 5. Pressing arm; 51. First massage head; 6. Hammer the connecting rod; 7. Knead using the inclined wheel; 8. Kneading arm; 81. Second massage head; 82. Limiting rod; 9. Gear connecting shaft; 91. Second gear; 92. Third gear; 10. Outer casing; 101. Strip-shaped limiting groove. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1 to 12 As shown, the kneading massage mechanism provided in this embodiment includes a drive mechanism 1, a pinching shaft 2, a pounding eccentric shaft 3, two pinching eccentric wheels 4, two pressing arms 5, two pounding connecting rods 6, two kneading inclined wheels 7, and two kneading arms 8.

[0017] The drive mechanism 1 is the power source for the entire mechanism, and its housing is roughly cylindrical. The internal stator and rotor of the drive mechanism 1 have a conventional structure and will not be described in detail here. The drive mechanism 1 differs from a conventional motor in that its rotor has a first output shaft 11 and a second output shaft 12 extending from both ends axially. The first output shaft 11 extends from one end of the drive mechanism 1, and the second output shaft 12 extends from the other end of the drive mechanism 1, and the first output shaft 11 and the second output shaft 12 are located on the same axis, i.e., coaxially arranged. This dual-end output structure allows the drive mechanism 1 to transmit power to both sides simultaneously. In this embodiment, the drive mechanism 1 can be a brushless motor.

[0018] The clamping shaft 2 is a long round shaft, whose axis is approximately perpendicular to the axis of the drive mechanism 1. The clamping shaft 2 is located on one side of the drive mechanism 1. The hammering eccentric shaft 3 is also a long round shaft, whose axis is also perpendicular to the axis of the drive mechanism 1. The hammering eccentric shaft 3 is located on the other side of the drive mechanism 1. The clamping shaft 2 and the hammering eccentric shaft 3 are parallel to each other and located at opposite ends of the drive mechanism 1. In other words, the drive mechanism 1 is located in the middle, and the clamping shaft 2 and the hammering eccentric shaft 3 are located at opposite ends of the drive mechanism 1.

[0019] The middle part of the clamping shaft 2 is connected to the first output shaft 11 of the drive mechanism 1 via a transmission mechanism, which is a gear transmission, so that the power of the first output shaft 11 can be transmitted to the clamping shaft 2, driving the clamping shaft 2 to rotate around its own axis. The middle part of the hammering eccentric shaft 3 is connected to the second output shaft 12 via a one-way transmission mechanism. This one-way transmission mechanism allows the second output shaft 12 to drive the hammering eccentric shaft 3 to rotate only in one direction of rotation. In the opposite direction of rotation, the second output shaft 12 and the hammering eccentric shaft 3 are in a disengaged state, with the second output shaft 12 spinning freely while the hammering eccentric shaft 3 does not rotate.

[0020] At each end of the clamping shaft 2, a clamping eccentric wheel 4 is fixedly fitted. The clamping eccentric wheel 4 is disc-shaped or cylindrical, and its central hole is fixedly fitted with the clamping shaft 2, so that the clamping eccentric wheel 4 rotates together with the clamping shaft 2. The geometric center of the clamping eccentric wheel 4 does not coincide with its rotation center, i.e., the axis of the clamping shaft 2, and there is a certain eccentricity. Therefore, the outer circle of the clamping eccentric wheel 4 is eccentric relative to the axis of the clamping shaft 2.

[0021] Each clamping eccentric wheel 4 is fitted with a corresponding pressing arm 5. The pressing arm 5 is a rigid component, one end of which has a through hole or ring structure for connecting to the clamping eccentric wheel 4. The through hole is adapted to the outer circle of the clamping eccentric wheel 4, allowing the pressing arm 5 to rotate relative to the outer circle of the clamping eccentric wheel 4. The pressing arm 5 is also provided with a first massage head 51, which is used to directly contact the human body for percussion massage. The pressing arm 5 is elongated, and the first massage head 51 is located at the end of the pressing arm 5 away from the end connected to the clamping eccentric wheel 4.

[0022] Each pressing arm 5 is also hinged to one end of a hammering link 6. The hammering link 6 is a slender rod, one end of which is connected to the corresponding part of the pressing arm 5 via a pin or hinge, allowing the pressing arm 5 and the hammering link 6 to swing relative to each other. The other end of the hammering link 6 is sleeved on the same side end of the hammering eccentric shaft 3. Specifically, the end of the hammering eccentric shaft 3 passes through a through hole at the end of the hammering link 6, and a bearing is provided between the two to reduce friction. Since the end of the hammering eccentric shaft 3 is also eccentric relative to its central axis, when the hammering eccentric shaft 3 rotates, its end drives the end of the hammering link 6 to perform a circular motion, thereby driving the pressing arm 5 to swing through the hammering link 6.

[0023] At both ends of the clamping shaft 2, kneading inclined wheels 7 are fixedly fitted. The two kneading inclined wheels 7 are located outside the two clamping eccentric wheels 4, that is, viewed from the middle to both ends along the axial direction of the clamping shaft 2, they are, in sequence, the clamping eccentric wheel 4 and the kneading inclined wheel 7. The kneading inclined wheel 7 is a ring-shaped or sleeve-shaped component, its inner hole is fixedly connected to the clamping shaft 2, and it rotates with the clamping shaft 2. The outer wall of the kneading inclined wheel 7, i.e., its outer circumferential surface, is an inclined surface, and the angle between the surface of this outer wall and its axial direction, i.e., the axial direction of the clamping shaft 2, is an acute angle, not a right angle. In other words, the outer contour of the kneading inclined wheel 7 has a height variation in the axial direction.

[0024] Each kneading inclined wheel 7 has a kneading arm 8 fitted onto its outer side wall. One end of the kneading arm 8 has a fitting structure adapted to the outer side wall of the kneading inclined wheel 7. The inner wall of this fitting structure contacts the outer side wall of the kneading inclined wheel 7 and can slide relative to and axially displace along its inclined outer side wall when the kneading inclined wheel 7 rotates. The other end of the kneading arm 8 has a second massage head 81, which is used to contact the human body for kneading massage. When the kneading inclined wheel 7 rotates with the pinching shaft 2, the fitting end of the kneading arm 8, guided by the inclined outer side wall, produces reciprocating axial movement and circumferential oscillation, thereby driving the second massage head 81 to perform a kneading motion similar to that of fingers.

[0025] After the drive mechanism 1 is powered on, its first output shaft 11 and second output shaft 12 can rotate simultaneously or rotate independently. The first output shaft 11 drives the pinching shaft 2 to rotate through the transmission mechanism. The pinching shaft 2 drives the pinching eccentric wheels 4 and the kneading inclined wheel 7 at both ends to rotate synchronously. When the pinching eccentric wheel 4 rotates, due to its eccentric structure, the pressing arm 5 sleeved on it will oscillate back and forth. When the kneading inclined wheel 7 rotates, it drives the kneading arm 8 to oscillate and move axially through the inclined surface. The two on the same side work together to achieve the function of kneading and pinching, that is, the kneading action, which is used to pinch the trapezius muscles on both sides of the back of the neck. At the same time, the second output shaft 12 drives the pounding eccentric shaft 3 to rotate through the one-way transmission mechanism. The end of the pounding eccentric shaft 3 drives the pressing arm 5 through the pounding connecting rod 6 to realize the pounding action.

[0026] Based on the above technical solution, a single drive mechanism 1 simultaneously drives kneading and pounding movements. The two massage techniques, kneading and pounding, are integrated into the same mechanism. The two movements are independent of each other and do not interfere with each other, which enriches the massage techniques, simplifies the mechanism structure, reduces manufacturing costs, and improves the integration and reliability of the massage mechanism. At the same time, the kneading and pounding movements are arranged side by side in space along the axial direction of the clamping shaft 2, making the overall structure of the mechanism compact and suitable for installation in the housing of various massage devices.

[0027] Based on the above embodiments, the first output shaft 11 is a single-helix worm gear, and the second output shaft 12 is a multi-helix worm gear.

[0028] A single-helix worm gear has one thread start. Each rotation of the worm drives the mating helical gear to rotate one tooth pitch. It has a relatively large transmission ratio and a lower output speed but a higher output torque. A multi-helix worm gear has more than one thread start, such as a double-helix worm gear (two threads) or a triple-helix worm gear (three threads). Each rotation of the worm drives the mating helical gear to rotate the same number of tooth pitches as the number of threads. It has a smaller transmission ratio and a higher output speed but a relatively lower output torque. In this embodiment, the second output shaft 12 preferably uses a double-helix worm gear.

[0029] Since the first output shaft 11 and the second output shaft 12 are located at opposite ends of the drive mechanism and are coaxially arranged, they are both directly machined or fixed to the rotor of the drive mechanism and rotate synchronously with the rotor. The first output shaft 11 adopts a single-helix worm gear, which meshes with the helical teeth of the first gear on the clamping shaft. Due to the large transmission ratio of the single-helix worm gear, the clamping shaft obtains a lower speed and a larger torque, which can meet the low-speed, high-torque drive requirements of the kneading action and ensure that the kneading inclined wheel has sufficient torque to drive the kneading arm for deep kneading. The second output shaft 12 adopts a multi-helix worm gear (double-helix worm gear), which meshes with the helical gear on the pounding eccentric shaft. Since the multi-helix worm gear can drive the helical gear to rotate more teeth with each rotation, the pounding eccentric shaft obtains a higher speed, thereby increasing the frequency of the pounding action and making the pounding rhythm more brisk.

[0030] The first output shaft 11 adopts a single helical worm gear and the second output shaft 12 adopts a multi-helical worm gear, which allows the two output ends of the same drive mechanism to output different speed and torque characteristics, respectively adapting to the different requirements of the driving parameters for kneading and pounding actions.

[0031] Based on the above technical solution, the first output shaft adopts a single-helix worm gear with a large transmission ratio and high output torque, which can provide sufficient driving torque for the pinching shaft, ensuring that the kneading inclined wheel can still operate stably when bearing the load of the kneading arm, and achieving deep and powerful kneading massage. The second output shaft adopts a multi-helix worm gear with a small transmission ratio and high output speed, which can effectively increase the speed of the eccentric hammering shaft, enabling the pressing arm to obtain a higher hammering frequency and achieve fast and rhythmic hammering massage. By using different types of worm gears at the two output ends of the same drive mechanism, the differentiated matching of the different speed and torque requirements of kneading and hammering actions is achieved, eliminating the need for an additional speed change mechanism. The structure is simple and low-cost, while ensuring the best effect of both massage actions.

[0032] Based on the above embodiment, a helical gear 31 is sleeved in the middle of the hammering eccentric shaft 3. The gear surface of the helical gear 31 is connected to the second output shaft 12 for transmission. A limiting groove 311 is opened at one end of the helical gear 31. A one-way bearing 312 is embedded in the limiting groove 311. The one-way bearing 312 is sleeved in the middle of the hammering eccentric shaft 3. The helical gear 31 is connected to the hammering eccentric shaft 3 for one-way transmission through the one-way bearing 312.

[0033] The helical gear 31 is a ring-shaped component with helical teeth on its outer circumference, and its inner hole extends through it. One end of the helical gear 31 has an inwardly recessed axial end face to form a limiting groove 311, which is a polygonal cavity used to accommodate the one-way bearing 312. The one-way bearing 312, also known as a one-way needle roller bearing or overrunning clutch, has an internal structure consisting of needle rollers and a cage. Its outer ring is fixedly fitted to the inner wall of the limiting groove 311, and its inner ring is fitted onto the central journal of the hammered eccentric shaft 3 and fixedly fitted to that journal. The characteristic of the one-way bearing 312 is that when the outer ring rotates relative to the inner ring in one direction, the needle rollers wedge in, locking the outer and inner rings, and torque can be transmitted; when rotating in the opposite direction, the needle rollers disengage, allowing the outer and inner rings to rotate freely relative to each other, and torque cannot be transmitted.

[0034] When the drive mechanism 1 rotates in the forward direction, the second output shaft 12 drives the helical gear 31 to rotate via a worm gear. The helical gear 31 drives the outer ring of the one-way bearing 312, which is fixed to it, to rotate. Since the one-way bearing 312 is locked, its inner ring rotates accordingly, thereby driving the eccentric hammering shaft 3 to rotate synchronously. When the drive mechanism 1 rotates in the reverse direction, the second output shaft 12 drives the helical gear 31 to rotate in the reverse direction, and the outer ring of the one-way bearing 312 rotates in the reverse direction. At this time, the one-way bearing 312 is in a disengaged state, and the inner ring does not rotate with the outer ring, so the eccentric hammering shaft 3 does not rotate. At this time, the first output shaft 11 of the drive mechanism 1 still drives the clamping shaft 2 to rotate, and the kneading function continues to operate, while the eccentric hammering shaft 3 stops rotating, and the hammering connecting rod 6 no longer provides power.

[0035] Based on the above technical solution, without adding an additional clutch device, the unidirectional torque transmission between the eccentric shaft 3 and the drive mechanism 1 is realized through the one-way bearing 312. This allows the pounding function to be selectively turned on or off according to the direction of the drive mechanism 1, while the kneading function remains independent. Users can switch between pure kneading mode and kneading plus pounding combination mode through simple control, enriching the massage mode selection. At the same time, the structure is simple, reliable, and inexpensive.

[0036] Based on the above embodiment, a first gear 21 is rotatably mounted on the axial middle section of the clamping shaft 2. The first gear 21 includes an integrally formed first helical tooth portion 211 and a first straight tooth portion 212. The first helical tooth portion 211 is connected to the first output shaft 11 for transmission. The first straight tooth portion 212 meshes with a second gear 91 fixedly mounted on the gear connecting shaft 9 for transmission. A third gear 92 is also fixedly mounted on the gear connecting shaft 9. The third gear 92 meshes with a fourth gear 22 fixedly mounted in the middle of the clamping shaft 2 for transmission.

[0037] The first gear 21 is a compound gear, with a helical tooth (first helical tooth portion 211) at one axial end and a spur tooth (first spur tooth portion 212) at the other end. Both are coaxial and integrally formed. The first helical tooth portion 211 meshes with the worm gear on the first output shaft 11, forming a worm-helical gear pair 31, achieving speed reduction and changing the transmission direction. The first spur tooth portion 212 is a spur gear, which meshes with the second gear 91. The second gear 91 is fixedly mounted on a gear connecting shaft 9, which is parallel to the clamping shaft 2 and rotatably supported on the movement housing. A third gear 92, also a spur gear, is fixedly mounted on the gear connecting shaft 9 and meshes with a fourth gear 22 fixedly mounted in the middle of the clamping shaft 2. The fourth gear 22 is fixedly mounted on the clamping shaft 2 and rotates synchronously with it.

[0038] In one embodiment, the second gear 91 and the third gear 92 are a double gear integrally formed on the gear connecting shaft 9.

[0039] Based on the above technical solution, the required reduction ratio and torque amplification are achieved in a limited axial space through two-stage gear reduction, so that the clamping shaft 2 can obtain sufficient driving torque to drive the clamping eccentric wheel 4 and the kneading inclined wheel 7 at both ends to perform heavy-load massage; the combination of helical tooth and straight tooth parts not only ensures the smoothness of transmission and load-bearing capacity, but also takes advantage of the high efficiency and low cost of spur gear transmission, resulting in a compact overall structure and convenient assembly.

[0040] Based on the above embodiments, a first retaining ring 32 is provided at the opening of the limiting groove 311 in the middle of the hammering eccentric shaft 3. A first wear-resistant pad 33 is sleeved between the middle of the hammering eccentric shaft 3 and the opening end face of the limiting groove 311 corresponding to the first retaining ring 32. The first wear-resistant pad 33 contacts the end face of the one-way bearing 312. A second retaining ring 34 is provided at the middle of the hammering eccentric shaft 3 at the end of the helical gear 31 away from the opening of the limiting groove 311. A second wear-resistant pad 35 is sleeved between the middle of the hammering eccentric shaft 3 and the helical gear 31 corresponding to the second retaining ring 34. The second wear-resistant pad 35 contacts the end face of the helical gear 31.

[0041] On the central journal of the hammering eccentric shaft 3, a second retaining ring 34, a second wear-resistant pad 35, a helical gear 31, a one-way bearing 312, a first wear-resistant pad 33, and a first retaining ring 32 are arranged sequentially along the axial direction. Both the first retaining ring 32 and the second retaining ring 34 are open elastic retaining rings, fitted into an annular groove on the hammering eccentric shaft 3, and fixed in axial position. The first wear-resistant pad 33 and the second wear-resistant pad 35 are circular washers made of wear-resistant materials such as polytetrafluoroethylene, nylon, or a metal wear-resistant layer, respectively fitted onto the hammering eccentric shaft 3, located between the retaining ring and adjacent components. The first wear-resistant pad 33 is located between the first retaining ring 32 and the open end face of the limiting groove 311, with one side contacting the first retaining ring 32 and the other side contacting the end face of the one-way bearing 312, thus restricting the axial movement of the one-way bearing 312. The second wear-resistant pad 35 is located between the end faces of the second retaining ring 34 and the helical gear 31, with one side in contact with the second retaining ring 34 and the other side in contact with the end face of the helical gear 31 away from the opening of the limiting groove 311.

[0042] The first retaining ring 32 and the second retaining ring 34 clamp the helical gear 31 and the one-way bearing 312 from both axial sides to prevent them from axial displacement when the eccentric shaft 3 rotates at high speed. The wear-resistant pad avoids direct metal-to-metal friction between the retaining ring and the helical gear 31, the retaining ring and the end face of the limiting groove 311 or the end face of the one-way bearing 312, thus playing a role in reducing wear and buffering.

[0043] Based on the above technical solution, the axial movement of the helical gear 31 and the one-way bearing 312 is effectively prevented, ensuring the accuracy of the meshing position between the helical gear 31 and the worm gear of the second output shaft 12, and avoiding poor meshing, increased noise and abnormal wear of the tooth surface due to axial offset; the wear-resistant pad significantly reduces end face wear, extends the service life of the transmission system, and improves the smoothness of operation.

[0044] Based on the above embodiments, the inner wall of the limiting groove 311 is polygonal, and the inner wall of the limiting groove 311 is adapted to the outer wall of the one-way bearing 312.

[0045] The limiting groove 311 is a recessed cavity opened at one end of the helical gear 31. Its inner wall cross-section is not circular, but rather a regular polygon, such as a regular hexagon, regular octagon, or a non-regular polygon. The outer ring of the one-way bearing 312 is also machined into a polygon of the same shape and size, forming a surface contact fit to achieve circumferential positioning. When the helical gear 31 rotates, the polygonal inner wall of its limiting groove 311 pushes the polygonal outer wall of the one-way bearing 312, causing the outer ring of the one-way bearing 312 to rotate synchronously with the helical gear 31 without relative slippage.

[0046] Based on the above technical solution, the polygonal fit ensures reliable torque transmission between the helical gear 31 and the outer ring of the one-way bearing 312, avoids slippage of the outer ring in the limiting groove 311, and improves transmission reliability. At the same time, the structure is easy to process, quick to assemble, and has a strong load-bearing capacity, making it suitable for impact load conditions, while reducing the number of parts and manufacturing costs.

[0047] Based on the above embodiment, the pressing arm 5 is L-shaped, and a first ring is provided at the bend of the L-shape of the pressing arm 5. The first ring is sleeved on the corresponding pinching eccentric wheel 4. A first massage head 51 is provided at the long side end of the pressing arm 5 corresponding to the L-shape, and the short side end of the pressing arm 5 corresponding to the L-shape is hinged to one end of the corresponding hammering link 6.

[0048] The pressing arm 5 is a rigid, one-piece component, with an overall L-shaped bend. A circular through-hole, or first ring, is provided at the bend of the L-shape. The inner diameter of this first ring matches the outer diameter of the clamping eccentric wheel 4, allowing the pressing arm 5 to be rotatably mounted on the clamping eccentric wheel 4 via this first ring. The long side of the L-shape extends from the bend away from the clamping axis 2, and its end is fixed or integrally formed with a first massage head 51, which is spherical, cylindrical, or ellipsoidal. The short side of the L-shape extends from the bend in a direction perpendicular to the long side, and its end has a hinge hole, which is hinged to one end of the hammering linkage 6 via a pin.

[0049] When the clamping eccentric wheel 4 rotates with the clamping shaft 2, due to the eccentric effect, the center of the first ring moves along a circular trajectory. This motion is decomposed into horizontal and vertical components, causing the pressing arm 5 to swing around the contact point between the first ring and the clamping eccentric wheel 4 as the fulcrum. The first massage head 51 at the long side end then reciprocates, achieving a hammering effect. The reciprocating motion of the hammering linkage 6 applies auxiliary force through the short side, enhancing the hammering force.

[0050] Based on the above technical solution, the L-shaped structure allows the pressing arm 5 to obtain sufficient lever arm length within the limited installation space, thereby amplifying the swing amplitude and hammering impact of the first massage head 51; the short side is hinged to the connecting rod to facilitate power transmission and motion coordination, and the overall structure is simple, the action is direct, and the hammering effect is obvious.

[0051] Based on the above embodiment, one end of the kneading arm 8 is provided with a second ring, which is sleeved on the outer side wall of the corresponding kneading inclined wheel 7. A limiting rod 82 is integrally formed on the second ring, and the limiting rod 82 is embedded in the strip-shaped limiting groove 101 on the inner side wall of the outer housing 10. The extending direction of the strip-shaped limiting groove 101 is the same as the axial direction of the kneading inclined wheel. The other end of the kneading arm 8 is provided with two extension columns extending in different directions. Each extension column is sleeved with a massage wheel. The two massage wheels are opposite to each other and spaced apart, and together form the second massage head 81.

[0052] The kneading arm 8 is a single integral component, with a second ring at one end. The inner diameter of the second ring matches the outer diameter of the kneading inclined wheel. The second ring fits onto the outer wall of the kneading inclined wheel, allowing relative rotation and axial sliding between them. A limiting rod 82 is integrally formed on the outer wall of the second ring, protruding outward from the outer wall. The outer shell 10, i.e., the outer shell of the massage mechanism, has a strip-shaped limiting groove 101 on its inner sidewall. The strip-shaped limiting groove 101 is an elongated groove extending along the axial direction of the kneading inclined wheel. The limiting rod 82 is inserted into the strip-shaped limiting groove 101, and the outer wall of the limiting rod 82 matches the inner wall of the strip-shaped limiting groove 101, allowing the limiting rod 82 to slide freely along the extension direction of the strip-shaped limiting groove. However, the limiting rod 82 is limited in the circumferential direction by the two side walls of the strip-shaped limiting groove 101, preventing circumferential rotation.

[0053] The other end of the kneading arm 8, the end furthest from the second ring, forks into two extension pillars that extend outward in opposite directions. Each extension pillar has a massage roller fitted at its end, which can rotate freely around the axis of the extension pillar. The two massage rollers are opposite each other with a gap between them, so that when they come into contact with the human body, they can pinch muscles or acupoints like fingers.

[0054] The outer wall of the kneading inclined wheel is an inclined surface. When the kneading inclined wheel rotates with the pinching shaft, the second ring is fitted onto the kneading inclined wheel and tends to displace axially due to the push from the inclined surface. Because the limiting rod on the second ring is embedded in the strip-shaped limiting groove, the strip-shaped limiting groove restricts the circumferential rotational freedom of the second ring, so that the second ring cannot rotate with the kneading inclined wheel, but can only make reciprocating linear motion along the extension direction of the strip-shaped limiting groove, that is, the axial direction of the kneading inclined wheel. The rotational motion of the kneading inclined wheel is converted into the axial reciprocating movement of the second ring through the sliding fit between its inclined surface and the inner wall of the second ring. The kneading arm as a whole makes axial reciprocating motion with the second ring. At the same time, the other end of the kneading arm is subjected to the reaction force of the massage part, so that the two massage wheels produce a relative opening and closing motion, thereby simulating kneading, pressing, pinching and other techniques.

[0055] The limiting rod and the second ring are integrally formed, eliminating the need for additional fittings and ensuring connection strength and positional accuracy.

[0056] Based on the above technical solution, the rotational motion of the kneading inclined wheel is transformed into the pure axial reciprocating motion of the second ring through the cooperation of the limiting rod and the strip-shaped limiting groove. This makes the swing trajectory of the kneading arm more stable and controllable, avoiding the undesirable circumferential offset of the second ring caused by the rotation of the kneading inclined wheel. This ensures that the two massage rollers can perform opening and closing kneading actions according to the predetermined trajectory, improving the accuracy and repeatability of the kneading action. The limiting rod and the second ring are integrally formed, with a simple structure, fewer parts, and convenient assembly. Moreover, the cooperation between the limiting rod and the strip-shaped limiting groove can withstand large axial thrust and lateral force, making it suitable for long-term heavy-load operation of the kneading action. At the same time, the extension direction of the strip-shaped limiting groove is the same as the axial direction of the kneading inclined wheel, ensuring that the reciprocating movement of the second ring is consistent with the axial direction of the kneading inclined wheel, maximizing the stroke of the kneading action and enhancing the kneading depth and massage effect.

[0057] Based on the above embodiment, the two clamping eccentric wheels 4 are located inside the two kneading inclined wheels 7 respectively, and the other end of the hammering connecting rod 6 is sleeved on the same side end of the hammering eccentric shaft 3 through a bearing.

[0058] Viewed axially from the center to both ends along the clamping shaft 2, the sequence is: the transmission zone in the middle of the clamping shaft 2, the clamping eccentric wheel 4, the kneading inclined wheel 7, and the end of the clamping shaft 2. That is, the clamping eccentric wheel 4 is closer to the middle of the clamping shaft 2, and the kneading inclined wheel 7 is located further out. The other end of the hammering link 6, that is, the end that is not hinged to the pressing arm 5, is provided with a bearing hole, in which a rolling bearing is installed. The inner ring of the bearing is fitted onto the end journal of the hammering eccentric shaft 3, allowing the hammering link 6 to rotate freely relative to the hammering eccentric shaft 3. Because the end journal of the hammering eccentric shaft 3 is eccentric to its center of rotation, when the hammering eccentric shaft 3 rotates, the outer ring of the bearing drives the end of the hammering link 6 to make a circular motion, thereby driving the pressing arm 5.

[0059] This arrangement separates the pressing arm 5 and the kneading arm 8 axially, each with its own independent working space. The striking linkage 6 moves at the end of the striking eccentric shaft 3 without interfering with the kneading arm 8.

[0060] Based on the above technical solution, through a reasonable axial layout, the kneading component and the pounding component do not overlap in space, ensuring the independence and safety of the two actions; the pounding linkage 6 cooperates with the pounding eccentric shaft 3 through bearings, reducing friction and wear, and improving transmission efficiency and stability; at the same time, the symmetrical arrangement at both ends makes the overall mechanism balanced in force, and the operation more stable.

[0061] Based on the above embodiments, both the first massage head 51 and the second massage head 81 are made of rubber.

[0062] The rubber material includes natural rubber, synthetic rubber such as silicone rubber, nitrile rubber, EPDM rubber, etc., or thermoplastic elastomers. The first massage head 51 is fixed to the end of the pressing arm 5 by molding, injection molding, or bonding; the massage roller in the second massage head 81 is also made of rubber and is sleeved on the extension column. The rubber material has appropriate hardness, which can provide sufficient support and produce elastic deformation under pressure.

[0063] Based on the above technical solutions, the rubber massage head is soft and comfortable when in contact with the human body, which can buffer the impact of hammering and avoid pain and damage caused by hard materials; at the same time, rubber has a suitable coefficient of friction, so it will not slip or excessively pull the skin during massage; in addition, rubber material is wear-resistant, aging-resistant, has a long service life, low cost, and is easy to process into various shapes.

[0064] This embodiment also provides a massage device, including the aforementioned kneading hammer massage mechanism.

[0065] The massage device can be a massage chair, massage mat, massage pillow, massage bed, handheld massager, or other types of health massage equipment. The massage device has a housing containing the aforementioned kneading massage mechanism. The housing has massage openings or massage covers corresponding to the positions of the first massage head 51 and the second massage head 81, allowing the massage heads to contact the human body through the openings or covers. The massage device also includes a control circuit and an operation panel. The control circuit is electrically connected to the drive mechanism 1 and is used to control the start, stop, forward and reverse rotation, and speed adjustment of the drive mechanism 1. The operation panel has buttons or a touch screen for users to select massage modes and adjust massage intensity and speed.

[0066] When the massage device is in operation, the user starts the device and selects the desired mode via the control panel. If the combination mode is selected, the drive mechanism 1 rotates forward, the first output shaft 11 drives the pinch shaft 2 to rotate, and the pinch shaft 2 simultaneously drives the pinch eccentric wheel 4 and the kneading inclined wheel 7 to rotate, producing two massage actions: percussion and kneading. The second output shaft 12 drives the percussion eccentric shaft 3 to rotate via the one-way bearing 312, and the percussion linkage 6 assists the pressing arm 5 to enhance the percussion effect. If the pure kneading mode is selected, the control circuit controls the drive mechanism 1 to rotate in the reverse direction. At this time, the kneading function remains unchanged, while the one-way bearing 312 between the percussion eccentric shaft 3 and the second output shaft 12 disengages, the percussion eccentric shaft 3 stops rotating, and the percussion function stops.

[0067] During use, the inclined kneading wheel 7 drives the kneading arm 8 through its inclined surface to produce a pinching action similar to the opening and closing of fingers, providing deep pressure and kneading to muscles and acupoints; the eccentric pinching wheel 4 drives the pressing arm 5 through eccentric rotation to produce a reciprocating pounding action, rhythmically tapping areas such as the back, shoulders, and waist. The kneading and pounding actions are independent and do not interfere with each other, allowing for combined stimulation of kneading and pounding on the same massage area simultaneously. Both the first massage head 51 and the second massage head 81 are made of rubber, which is soft, comfortable, safe, and reliable when in contact with the human body.

[0068] Based on the above technical solution, this massage device organically integrates kneading and percussion massage functions through a built-in kneading and percussion massage mechanism. It features a compact structure and controllable cost. Users can freely switch between combined and pure kneading modes according to their needs, making operation simple and convenient. When kneading and percussion work simultaneously, they can simulate the coordinated operation of multiple techniques by a professional massage therapist, significantly improving massage comfort and therapeutic effects. The rubber massage head ensures safety and comfort, making it especially suitable for people sensitive to pressure. Therefore, this massage device has good market application prospects and practical value.

[0069] This utility model has been described with reference to the above-described embodiments and accompanying drawings. However, the above embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. On the contrary, modifications and equivalent provisions included in the spirit and scope of the claims are all included within the scope of this utility model.

Claims

1. A kneading and hammering massage mechanism, characterized in that, include: A drive mechanism having a first output shaft and a second output shaft, the first output shaft and the second output shaft being located at opposite ends of the drive mechanism and coaxially arranged; The drive mechanism includes a clamping shaft and a hammering eccentric shaft, which are arranged parallel to each other and located at opposite ends. Both the clamping shaft and the hammering eccentric shaft are perpendicular to the first output shaft. The middle part of the clamping shaft is connected to the first output shaft, and the middle part of the hammering eccentric shaft is connected to the second output shaft in a unidirectional manner. A first gear is rotatably mounted on the axial middle section of the clamping shaft. The first gear includes an integrally formed first helical tooth and a first straight tooth. The first helical tooth is connected to the first output shaft, and the first straight tooth meshes with a second gear fixedly mounted on a gear connecting shaft. A third gear is also fixedly mounted on the gear connecting shaft, and the third gear meshes with a fourth gear fixedly mounted on the middle part of the clamping shaft. Two clamping eccentric wheels are respectively fixedly sleeved on both ends of the clamping shaft; Two pressing arms, each pressing arm is correspondingly sleeved on one of the clamping eccentric wheels, and each pressing arm is provided with a first massage head; Two hammering links, one end of each hammering link is hinged to the corresponding pressing arm, and the other end of each hammering link is sleeved on the same side end of the hammering eccentric shaft; Two kneading inclined rollers are respectively fixedly sleeved at both ends of the clamping shaft and located outside the two clamping eccentric rollers; Two kneading arms, each kneading arm being fitted onto the outer wall of one of the kneading inclined wheels, and each kneading arm being provided with a second massage head.

2. The kneading and pounding massage mechanism according to claim 1, characterized in that: The first output shaft is a single-helix worm gear, and the second output shaft is a multi-helix worm gear.

3. The kneading and pounding massage mechanism according to claim 1, characterized in that: A helical gear is fitted in the middle of the hammering eccentric shaft. The gear surface of the helical gear is connected to the second output shaft for transmission. A limit groove is opened at one end of the helical gear. A one-way bearing is embedded in the limit groove. The one-way bearing is fitted in the middle of the hammering eccentric shaft. The helical gear is connected to the hammering eccentric shaft for one-way transmission through the one-way bearing.

4. The kneading and pounding massage mechanism according to claim 3, characterized in that: A first retaining ring is provided at the middle of the hammering eccentric shaft corresponding to the opening of the limiting groove. A first wear-resistant pad is fitted between the middle of the hammering eccentric shaft and the opening end face of the limiting groove corresponding to the first retaining ring, and the first wear-resistant pad contacts the end face of the one-way bearing. A second retaining ring is provided at the middle of the hammering eccentric shaft corresponding to the end of the helical gear away from the opening of the limiting groove. A second wear-resistant pad is fitted between the middle of the hammering eccentric shaft and the helical gear corresponding to the second retaining ring, and the second wear-resistant pad contacts the end face of the helical gear.

5. The kneading and pounding massage mechanism according to claim 3, characterized in that: The inner wall of the limiting groove is polygonal, and the inner wall of the limiting groove is adapted to the outer wall of the one-way bearing.

6. The kneading and pounding massage mechanism according to claim 1, characterized in that: The pressing arm is L-shaped, and a first ring is provided at the bend of the L-shape of the pressing arm. The first ring is sleeved on the corresponding clamping eccentric wheel. The first massage head is provided at the long side end of the pressing arm corresponding to the L-shape, and the short side end of the pressing arm corresponding to the L-shape is hinged to one end of the corresponding hammering link.

7. The kneading and pounding massage mechanism according to claim 1, characterized in that: One end of the kneading arm is provided with a second ring, on which a limiting rod is integrally formed. The limiting rod is embedded in a strip-shaped limiting groove on the inner side wall of the outer housing. The extending direction of the strip-shaped limiting groove is the same as the axial direction of the kneading inclined wheel. The second ring is sleeved on the outer side wall of the corresponding kneading inclined wheel. The other end of the kneading arm is provided with two extension columns extending in different directions. Each extension column is sleeved with a massage wheel. The two massage wheels are opposite to each other and spaced apart, and together form the second massage head.

8. The kneading and pounding massage mechanism according to claim 1, characterized in that: The two clamping eccentric wheels are located inside the two kneading inclined wheels, and the other end of the hammering connecting rod is sleeved on the same side end of the hammering eccentric shaft through a bearing.

9. A massage device, characterized in that: Includes the kneading hammer massage mechanism as described in any one of claims 1 to 8.

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