A foot massager with single-axis driving structure and a massage chair

Abstract

The present application and massage chair foot massager technical field, provide a kind of foot massager and massage chair with single-shaft driving structure, foot massager includes: fixed frame, pivot, base, massage piece, first driving part and second driving part;Pivot is rotatably arranged on fixed frame around its own axis and forms first rotary pair, base is sleeved on pivot and forms second rotary pair, base is provided with accommodating cavity, massage piece is arranged in accommodating cavity and is drivingly connected with pivot.The present application uses single pivot as base swing support shaft and massage power transmission shaft simultaneously, replaces double-shaft separate structure, realizes base swing and massage piece movement decoupling, two sets of movements can be independently or synchronously worked, reduces the number of shafting, bearing parts, shortens transmission path, reduces axial installation space, simplifies assembly, reduces transmission loss and noise, adapts to the assembly use demand of compactness, high reliability of massage chair.

Description

Technical Field

[0001] This invention belongs to the technical field of foot massagers for massage chairs, specifically relating to a foot massager and massage chair with a single-axis drive structure. Background Technology

[0002] Massage chairs, as home health care devices that can simulate manual massage techniques and relieve human fatigue, have been widely used in homes and public places. Among them, foot massage, as an important part of massage chairs, usually achieves kneading, kneading and other massage functions on the user's feet by installing foot massagers at the bottom of the massage chair.

[0003] Existing foot massagers generally include a fixed frame, a base rotatably mounted on the fixed frame, and massage components housed within a cavity inside the base. During use, the base needs to oscillate back and forth relative to the fixed frame around a rotation axis to adapt to different user foot shapes and provide a wrap-around massage. Simultaneously, the massage components within the base's cavity also need to rotate around their own drive axis to apply kneading, rolling, and other massage actions to the soles of the feet. The rotation of the base and the rotation of the massage components are powered by independent drive sources, thus forming two independent transmission systems.

[0004] Specifically, in a traditional dual-axis drive structure, the base is rotatably mounted on a fixed frame via a base pivot, which only serves to support the base's swing relative to the fixed frame. The massage element, on the other hand, is connected to the drive source via a massage transmission shaft, which only transmits power to the massage element. Because the base pivot and the massage transmission shaft are functionally independent and spatially parallel, each transmission system requires independent shaft parts, bearing assemblies, and corresponding mounting structures. This results in a large number of shaft parts and bearings inside the foot massager, leading to a high overall number of components.

[0005] Meanwhile, because the massage drive shaft and the base rotation shaft are separate, the transmission path between the second drive component (i.e., the drive source that drives the massage component to rotate) and the massage component is relatively long. Power needs to be transmitted to the massage component through multiple transmission stages, which not only increases energy loss and noise during transmission, but also increases the precision requirements for the coordination between each transmission stage, resulting in more assembly steps and a more complex overall assembly relationship. In addition, the parallel arrangement of the two shafts requires a large axial installation space for the foot massager, which is not conducive to the compact design of the overall structure of the foot massager and also increases the size and weight of the massage chair. The increased number of parts and the complexity of the assembly relationship also directly increase the manufacturing cost and, to some extent, increase the failure rate during product use, affecting the reliability and service life of the product. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a foot massager and massage chair with a single-axis drive structure, in light of the current state of the prior art.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a foot massager with a single-axis drive structure is proposed, comprising: a fixing frame; A pivot is rotatably mounted on the fixed frame about its own axis, and a first revolute joint is formed between the pivot and the fixed frame; A base, which is fitted onto the pivot, forms a second revolute joint between the base and the pivot, allowing the base to rotate relative to the fixed frame about the axis of the pivot; the base is provided with a receiving cavity, which has an opening for inserting a foot. A massage element is disposed within the receiving cavity and is drively connected to the pivot. When the pivot rotates around its own axis, the rotational motion of the pivot is transmitted to the massage element, thereby causing the massage element to generate a massage motion relative to the base within the receiving cavity. A first driving member is disposed between the fixed frame and the base. When the first driving member is activated, it applies a torque about the pivot axis to the base, causing the base to rotate relative to the fixed frame. The second driving member is disposed on the fixed frame and includes an output end, which is tractively connected to the pivot. The second driving member is used to drive the pivot to rotate around its own axis.

[0008] In the aforementioned foot massager with a single-axis drive structure, the first drive component includes an airbag and an elastic element. The airbag is fixed to the frame and movably abuts against the base. A first end of the elastic element is connected to the frame, and a second end of the elastic element is connected to the base. When the airbag is inflated, it pushes the base to rotate in the first direction and simultaneously stretches the elastic element; When the airbag deflates, the elastic element releases its elastic force and drives the base to rotate in a second direction opposite to the first direction.

[0009] In the aforementioned foot massager with a single-axis drive structure, the base has a drive mounting area located on a first side of the pivot axis, and the receiving cavity is located on a second side of the pivot axis; wherein... The airbag and the elastic element are synchronously arranged within the drive mounting area.

[0010] In the foot massager with a single-axis drive structure described above, the base includes a housing and a frame fixed inside the housing, and the receiving cavity is disposed in the housing; the frame is provided with a mounting groove, which extends along the axial direction of the pivot. A rotating seat is fixedly connected in the mounting groove. The rotating seat includes a cavity through which the pivot passes, and the inner wall of the cavity is rotatably engaged with the outer wall of the pivot.

[0011] In the aforementioned foot massager with a single-axis drive structure, the second drive component includes: A fixed base is fixedly mounted on the fixed frame, and the pivot passes through the fixed base; The motor is fixedly mounted on the fixed base, and the output end is connected to a worm gear. A worm gear is fixed to the outer wall of the pivot. The worm gear is rotatably disposed in the fixed seat and meshes with the worm. It is used to drive the pivot to rotate when the worm rotates.

[0012] In the aforementioned foot massager with a single-axis drive structure, a first bearing seat and a second bearing seat are provided within the fixed base, and the pivot is supported by the first bearing seat and the second bearing seat respectively via the first bearing and the second bearing seat; wherein... The first bearing and the second bearing respectively limit the two end faces of the worm gear along the axial direction.

[0013] In the foot massager with a single-axis drive structure described above, the massage element is connected to the pivot via a pulley mechanism. The pulley mechanism includes a drive wheel fixedly connected to the pivot and a driven wheel fixedly connected to the massage element. The drive wheel and the driven wheel are connected by a belt.

[0014] In the aforementioned foot massager with a single-axis drive structure, the massage component includes: A rotating shaft is rotatably mounted on the base, and one end of the rotating shaft is fixedly connected to the driven wheel; An eccentric sleeve is fitted onto the outer wall of the rotating shaft; The first end of the push module is fixedly connected to the outer circumferential surface of the eccentric sleeve, and the base is provided with an arc-shaped guide groove. The second end of the push module is slidably disposed in the arc-shaped guide groove.

[0015] In the aforementioned foot massager with a single-axis drive structure, the axis of the rotating shaft is arranged parallel to the axis of the pivot, and the axis of the rotating shaft is located offset to one side of the pivot axis within the base.

[0016] In order to solve the above-mentioned technical problems, the present invention also proposes a massage chair, including the foot massager with a single-axis drive structure described above.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) One end of the pivot is rotatably mounted on the fixed frame via a first revolute joint. The base is fitted onto the pivot and forms a second revolute joint with the pivot, allowing the base to swing relative to the fixed frame around the pivot axis. At the same time, the pivot also serves as a transmission shaft that transmits the power of the second driving component to the massage component inside the cavity. Compared to the traditional dual-axis structure of massagers that requires separate base swing shaft and massage transmission shaft, this application reduces the number of shaft parts and bearings by having the same pivot structurally serve as both the base swing center shaft and the massage power transmission shaft. This shortens the transmission path from the second driving component to the massage component, thereby reducing the axial installation space, reducing the number of transmission links, and simplifying the overall assembly relationship.

[0019] (2) The first driving component consists of an airbag and an elastic element. The airbag is fixed to the fixed frame and moves against the base. The two ends of the elastic element are connected to the fixed frame and the base, respectively. When the airbag is inflated, it pushes the base to rotate in the first direction and stretches the elastic element. When the airbag is deflated, the elastic element releases its elastic force to drive the base to rotate in the second direction. Compared with other structures where the motor directly drives the base to swing, this application relies on the inflation and deflation of the airbag in conjunction with the rebound of the elastic element to realize the reciprocating swing of the base. The airbag output force is gentle and can smoothly adjust the swing angle of the base. The component structure is simple, reducing the number of parts in the swing drive mechanism, reducing the operating noise of the mechanism, and facilitating the reciprocating control of the base swing.

[0020] (3) The base includes a housing and a frame fixed inside the housing. A receiving cavity is provided in the housing. A mounting groove extending along the axis of the pivot is provided on the frame. A rotating seat is fixedly assembled in the mounting groove. The rotating seat has a cavity through which the pivot passes. The inner wall of the cavity and the outer wall of the pivot can be rotatably fitted. The rotating seat is preferably made of plastic, but self-lubricating bushings or bearings can also be used. Compared with the form in which the base housing directly rotates with the pivot, this application uses the frame to support the rotating seat, which improves the structural strength of the mating part between the base and the pivot and avoids deformation of the mating position due to long-term swinging of the base. Multiple optional rotating seat forms can be adapted to different friction and durability requirements, reduce frictional loss between the pivot and the base during relative rotation, and improve the smoothness of the mechanism's swing and the service life of the whole machine. Attached Figure Description

[0021] Figure 1 This is a perspective view of a foot massager with a single-axis drive structure according to the present invention.

[0022] Figure 2 yes Figure 1 A 3D view with parts of the shell omitted.

[0023] Figure 3 yes Figure 1 A perspective view omitting the entire shell and the structure of the mounting bracket.

[0024] Figure 4 yes Figure 3 A 3D view omitting the second driving component.

[0025] Figure 5 It is a three-dimensional view of the second drive component structure, the pivot, and the rotating seat connection.

[0026] Figure 6 It is a 3D diagram of the skeleton.

[0027] In the diagram, 100 is the fixed frame; 200 is the pivot; 300 is the base; 310 is the receiving cavity; 320 is the drive mounting area; 330 is the housing; 340 is the frame; 341 is the mounting slot; 342 is the rotating seat; 400 is the massage element; 410 is the rotating shaft; 420 is the eccentric sleeve; 430 is the button module; 500 is the elastic element; 600 is the second drive element; 610 is the fixed seat; 620 is the motor; 630 is the worm gear; 640 is the worm wheel; 650 is the first bearing; 660 is the second bearing; 700 is the belt mechanism; 710 is the driving wheel; 720 is the driven wheel; and 730 is the belt. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] This embodiment discloses a foot massager with a single-axis drive structure. This foot massager is mounted on a massage chair and can effectively solve the technical defects of existing foot massagers that use dual independent drive shafts, such as a large number of parts, long transmission links, large energy loss, complex assembly, large space occupation, high manufacturing cost, and high failure rate. It has the advantages of simplified parts, short transmission path, low transmission noise, simple assembly, compact structure, and high overall reliability, and can be widely adapted to the foot massage conditions of various massage chairs.

[0031] Specifically, refer to Figures 1 to 6 The foot massager of this solution includes a frame 100, a pivot 200, a base 300, a massage component 400, a first drive component, and a second drive component 600.

[0032] The mounting bracket 100 serves as the support structure for the entire foot massager and is responsible for connecting and securing it to the massage chair.

[0033] The pivot 200 is rotatably mounted on the fixed frame 100 around its own axis. The pivot 200 and the fixed frame 100 form a first rotating pair. The pivot 200 serves as both a support shaft for the base 300 to swing relative to the fixed frame 100 and a power transmission shaft for transmitting rotational power to the massage component 400.

[0034] The base 300 is fitted outside the pivot 200, and a second rotating joint is formed between the base 300 and the pivot 200, so that the base 300 can rotate relative to the fixed frame 100 around the axis of the pivot 200.

[0035] The base 300 is provided with a receiving cavity 310, which has an opening for inserting a foot to allow the user to insert their foot for massage. The base 300 may have one or two receiving cavities 310, with each cavity accommodating one foot.

[0036] The mounting bracket 100 can be equipped with one base 300 or two bases 300, and each base 300 is provided with a receiving cavity to accommodate the feet.

[0037] The massage element 400 is arranged inside the receiving cavity 310, and the massage element 400 is connected to the pivot 200 in a transmission manner. When the pivot 200 rotates around its own axis, the rotational power of the pivot 200 can be transmitted to the massage element 400, driving the massage element 400 to generate a massage motion relative to the base 300 inside the receiving cavity 310, thereby achieving the kneading and rolling massage effect on the soles of the feet.

[0038] The first driving component is arranged between the fixed frame 100 and the base 300. When the first driving component is working, it outputs torque to drive the base 300 to rotate and swing around the axis of the pivot 200, thereby adjusting the pitch angle of the receiving cavity 310 to adapt to different users' foot shapes and achieve foot wrapping massage.

[0039] The second drive unit 600 is mounted on the fixed frame 100. The second drive unit 600 has an output end, which is connected to the pivot 200 for transmission. The second drive unit 600 is used to output power to drive the pivot 200 to rotate around its own axis.

[0040] This solution uses a single 200mm pivot to simultaneously achieve base rotation support and power transmission, abandoning the traditional dual-axis structure where the base pivot and massage drive shaft are arranged independently and in parallel. This simplifies the shaft system, bearings, and supporting installation components, shortens the power transmission path, reduces transmission loss and noise, reduces the axial installation space of the whole machine, simplifies the assembly process, reduces production costs, and improves the overall reliability of the machine.

[0041] In one preferred embodiment, the first driving member adopts a driving structure with an airbag and an elastic member 500.

[0042] Specifically, the airbag is fixedly mounted on the fixing frame 100, and the airbag and the base 300 form a movable abutment fit; one end of the elastic element 500 is connected to the fixing frame 100, and the other end of the elastic element 500 is connected to the base 300.

[0043] When the airbag is filled with gas and expands, the airbag pushes the base 300 outward, causing the base 300 to rotate in the first direction. During this process, the elastic element 500 is stretched, allowing the elastic element 500 to store elastic potential energy.

[0044] When the airbag is deflated, its pushing force disappears, and the elastic element 500 releases its stored elasticity, pulling the base 300 to rotate and reset in a second direction opposite to the first direction. This achieves the reciprocating swinging motion of the base 300 around the axis of the pivot 200. The drive combination structure of the airbag and elastic element has a simple layout, which can smoothly drive the base to swing while making it easy to control the swing amplitude.

[0045] Of course, the primary driving component can be a power device such as a cylinder or an electric motor.

[0046] Furthermore, the base 300 divides the space into a drive mounting area 320 on the first side of the pivot 200 axis, and a receiving cavity 310 is arranged on the second side of the pivot 200 axis; the airbag and elastic element 500 are uniformly arranged inside the drive mounting area 320. This layout concentrates the swing drive components on one side, and the foot receiving space and drive mounting space are arranged separately without interference. This not only protects the airbag and elastic element 500 from foot compression interference, but also facilitates a neat arrangement of the internal space of the entire machine.

[0047] This section provides further explanation of the complete working process of each component during the rotation and oscillation of the base 300 around the pivot 200: When the base 300 pitches and rotates, the fixed frame 100 remains in a stationary state, and the second drive component 600, fixed seat 610, first bearing 650 and second bearing 660 installed on the fixed frame 100 all remain in their positions.

[0048] Pivot 200 is constrained by the first revolute joint and can only rotate around its own axis. The rotation of base 300 will not cause pivot 200 to deflect at an angle.

[0049] The rotational power of the base 300 as a whole comes from the expansion and pushing of the airbag or the pullback of the elastic element 500. The base 300 drives the frame 340 and the rotating seat 342 to rotate together around the axis of the pivot 200. The inner wall of the cavity of the rotating seat 342 slides relative to the outer cylindrical surface of the pivot 200. The relative rotation between the base and the pivot is achieved by the second rotating joint.

[0050] The receiving cavity 310, massage piece 400, driven wheel 720, rotating shaft 410, eccentric sleeve 420, and push module 430, all assembled inside the base 300, move in a pitching and swaying motion in sync with the base 300. The driving wheel 710 in the pulley mechanism is mounted on the pivot 200 and only rotates itself without moving with the base. The belt 730 moves at an angle following the pitching posture of the base, and the deformation of the belt itself compensates for the attitude change between the driving wheel 710 and the driven wheel 720.

[0051] This achieves complete decoupling of the two sets of movements: the first set of movements is the overall pitch and rotation of the base 300, driven by the first drive component consisting of the airbag and the elastic element 500, used to adjust the foot placement angle; the second set of movements is the kneading and massaging movement of the massage element 400 relative to the base 300, powered by the second drive component 600. The two sets of movements can be started and stopped independently, or they can run synchronously without interfering with each other.

[0052] Preferably, the elastic element 500 is a spring.

[0053] In another embodiment of this solution, the base 300 adopts a composite assembly structure of a housing 330 and an internal frame 340. The receiving cavity 310 is formed and disposed on the housing 330; the frame 340 is fixedly installed inside the housing 330, and a mounting groove 341 extending along the axis of the pivot 200 is formed on the frame 340.

[0054] The mounting slot 341 is internally fitted with a rotating seat 342, which has a cavity through which the pivot 200 passes. The inner wall of the cavity and the outer wall of the pivot 200 are rotatably fitted together.

[0055] The second rotating joint between the base 300 and the pivot 200 is realized by the rotating seat 342, which ensures that the base 300 can swing freely around the pivot 200. At the same time, the structure of the frame 340 plus the rotating seat 342 can improve the structural strength of the mating position between the base and the pivot, and prevent deformation due to long-term swinging.

[0056] The rotating seat 342 is preferably made of plastic, which has the advantages of easy molding, low coefficient of friction and low cost. In another embodiment, the rotating seat 342 can also be a self-lubricating bushing or a bearing, thereby further reducing the frictional resistance during the relative rotation of the pivot 200 and the base 300, reducing wear and improving the durability of the mechanism.

[0057] Preferably, the second driving component 600 of this solution adopts a motor-worm gear-worm wheel transmission structure. The second driving component 600 includes a fixed base 610, a motor 620, and a worm wheel 640; the fixed base 610 is fastened to the fixed frame 100, and the pivot 200 passes through the fixed base 610; the motor 620 is fixedly mounted on the fixed base 610, and the output end of the motor 620 is connected to the worm gear 630; the worm wheel 640 is fixedly sleeved on the outer wall of the pivot 200, and the worm wheel 640 is rotatably housed inside the fixed base 610 and meshes with the worm gear 630 for transmission. The motor 620 drives the worm gear 630 to rotate, and through the meshing of the worm gear and worm wheel, drives the worm wheel 640 and the pivot 200 fixedly connected to it to rotate, thereby realizing the rotational drive of the pivot 200. The worm gear transmission has the characteristics of speed reduction and torque increase, and smooth operation, and can provide sufficient output torque for massage movements.

[0058] Furthermore, the fixed base 610 is internally provided with a first bearing housing and a second bearing housing; the pivot 200 is supported and assembled on the first bearing housing and the second bearing housing by means of the first bearing 650 and the second bearing 660 respectively; the first bearing 650 and the second bearing 660 form axial limits on the two end faces of the worm gear 640 along the axial direction of the pivot 200. The dual bearings achieve rotational support for the pivot 200 and simultaneously provide axial positioning for the worm gear, suppressing axial movement of the worm gear and pivot 200 during operation, ensuring the meshing accuracy of the worm and worm gear, reducing transmission noise, and extending the service life of the transmission components.

[0059] The complete power transmission process of the second drive unit 600 driving the massage unit 400 is described below: After the motor 620 is powered on, its output torque drives the worm 630 to rotate continuously. The worm 630 meshes with the worm wheel 640, and transmits the high-speed rotation output by the motor 620 to the worm wheel 640 after the worm-worm wheel pair reduces speed and increases torque. The worm wheel 640 is fixed to the outer wall of the pivot 200, and drives the pivot 200 to rotate stably around its own axis under the support of the first bearing 650 and the second bearing 660.

[0060] The drive wheel 710, fixed to the pivot 200, rotates synchronously with the pivot 200. The drive wheel 710 transmits rotational power to the driven wheel 720 via the belt 730. The driven wheel 720 is fixed to the rotating shaft 410 of the massage element 400, causing the rotating shaft 410 to rotate inside the base 300. The rotating shaft 410 drives the eccentric sleeve 420 to perform eccentric rotational motion. The eccentric sleeve 420 drives the pressing module 430, causing the end of the pressing module 430 to slide reciprocally along the arc-shaped guide groove inside the base 300, ultimately outputting kneading and rolling massage actions. Even when the base 300 is in a pitching and swaying state, the pivot 200 can still rotate independently, and the power can still be completely transmitted to the massage element 400, achieving continuous massage operation in the swaying posture.

[0061] In this design, a pulley mechanism is used to transmit power between the pivot 200 and the massage element 400. The pulley mechanism includes a driving pulley 710, a driven pulley 720, and a belt 730. The driving pulley 710 is fixedly mounted on the pivot 200, and the driven pulley 720 is fixedly connected to the massage element 400. The belt 730 is fitted between the driving pulley 710 and the driven pulley 720 to transmit power. Rotation of the pivot 200 drives the driving pulley 710 to rotate, which in turn drives the driven pulley 720 to rotate via the belt 730, thereby driving the massage element 400 to complete the massage motion. Belt drive provides cushioning and shock absorption, reduces transmission noise, and is easy to assemble with high tolerance for coaxiality during installation.

[0062] Furthermore, the massage component 400 includes a rotating shaft 410, an eccentric sleeve 420, and a pressing module 430. The rotating shaft 410 is rotatably mounted inside the base 300, and one end of the rotating shaft 410 is fastened to the driven wheel 720; the eccentric sleeve 420 is fitted onto the outer wall of the rotating shaft 410; the first end of the pressing module 430 is fixedly connected to the outer circumferential surface of the eccentric sleeve 420, and an arc-shaped guide groove is provided inside the base 300, and the second end of the pressing module 430 is slidably assembled within the arc-shaped guide groove.

[0063] When the driven wheel 720 drives the rotating shaft 410 to rotate, the eccentric sleeve 420 rotates eccentrically with the rotating shaft 410, driving the push module 430 to reciprocate in an arc-shaped swing along the arc-shaped guide groove, thereby simulating kneading and massage actions to massage and stimulate the user's feet.

[0064] Furthermore, the axis of the rotation axis 410 and the axis of the pivot 200 are arranged parallel to each other, with the axis of the rotation axis 410 offset to one side of the axis of the pivot 200 inside the base 300. This offset arrangement allows the movement trajectory of the button module 430 to fully cover the foot massage area, improving the coverage effect of the foot massage.

[0065] This solution also discloses a massage chair equipped with a foot massager with a single-axis drive structure as described in any of the above embodiments. Utilizing the structural feature of a single pivot simultaneously supporting the swing and transmitting power, the number of shafts and bearings is reduced, the transmission chain is shortened, the overall weight and manufacturing cost are lowered, the space occupied by the foot massager is reduced, transmission noise and failure rate are decreased, and the assembly efficiency and reliability of the massage chair are improved.

[0066] This solution adopts a single-axis integrated structure, which, compared to the traditional dual-axis independently driven foot massage mechanism, eliminates a separate massage transmission shaft and its matching bearings and mounting structure, significantly reducing the number of parts and simplifying the assembly process. Power is output from the second drive component 600 and directly transmitted to the massage component 400 via the pivot 200 and then through the pulley mechanism, shortening the transmission link, reducing transmission energy loss, and lowering operating noise. The single pivot integrates support and transmission functions, occupying less axial space, which is conducive to the miniaturization and compact design of the massager. At the same time, reducing the number of parts also reduces the overall failure rate, improves product durability, and meets the design requirements of lightweight and high reliability for massage chair products.

[0067] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0069] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A foot massager with a single-axis drive structure, characterized in that, include: Fixture; A pivot is rotatably mounted on the fixed frame about its own axis, and a first revolute joint is formed between the pivot and the fixed frame; A base, which is fitted onto the pivot, forms a second revolute joint between the base and the pivot, allowing the base to rotate relative to the fixed frame about the axis of the pivot; the base is provided with a receiving cavity, which has an opening for inserting a foot. A massage element is disposed within the receiving cavity and is drively connected to the pivot. When the pivot rotates around its own axis, the rotational motion of the pivot is transmitted to the massage element, thereby causing the massage element to generate a massage motion relative to the base within the receiving cavity. A first driving member is disposed between the fixed frame and the base. When the first driving member is activated, it applies a torque about the pivot axis to the base, causing the base to rotate relative to the fixed frame. The second driving member is disposed on the fixed frame and includes an output end, which is tractively connected to the pivot. The second driving member is used to drive the pivot to rotate around its own axis.

2. A foot massager with a single-axis drive structure as described in claim 1, characterized in that, The first driving component includes an airbag and an elastic element. The airbag is fixed to the fixed frame and movably abuts against the base. A first end of the elastic element is connected to the fixed frame, and a second end of the elastic element is connected to the base. When the airbag is inflated, it pushes the base to rotate in the first direction and simultaneously stretches the elastic element; When the airbag deflates, the elastic element releases its elastic force and drives the base to rotate in a second direction opposite to the first direction.

3. A foot massager with a single-axis drive structure as described in claim 2, characterized in that, The base has a drive mounting area located on a first side of the pivot axis, and the receiving cavity is located on a second side of the pivot axis; wherein, The airbag and the elastic element are synchronously disposed within the drive mounting area.

4. A foot massager with a single-axis drive structure as described in claim 1, characterized in that, The base includes a housing and a frame fixed inside the housing, and the receiving cavity is disposed in the housing; the frame is provided with a mounting groove, which extends along the axial direction of the pivot. A rotating seat is fixedly connected in the mounting groove. The rotating seat includes a cavity through which the pivot passes, and the inner wall of the cavity is rotatably engaged with the outer wall of the pivot.

5. A foot massager with a single-axis drive structure as described in claim 1, characterized in that, The second driving element includes: A fixed base is fixedly mounted on the fixed frame, and the pivot passes through the fixed base; The motor is fixedly mounted on the fixed base, and the output end is connected to a worm gear. A worm gear is fixed to the outer wall of the pivot. The worm gear is rotatably disposed in the fixed seat and meshes with the worm. It is used to drive the pivot to rotate when the worm rotates.

6. A foot massager with a single-axis drive structure as described in claim 5, characterized in that, The fixed base is provided with a first bearing seat and a second bearing seat, and the pivot is supported by the first bearing and the second bearing seat respectively via the first bearing and the second bearing seat; wherein... The first bearing and the second bearing respectively limit the two end faces of the worm gear along the axial direction.

7. A foot massager with a single-axis drive structure as described in claim 1, characterized in that, The massage element is connected to the pivot via a pulley mechanism, which includes a drive wheel fixedly connected to the pivot and a driven wheel fixedly connected to the massage element. The drive wheel and the driven wheel are connected by a belt.

8. A foot massager with a single-axis drive structure as described in claim 7, characterized in that, The massage component includes: A rotating shaft is rotatably mounted on the base, and one end of the rotating shaft is fixedly connected to the driven wheel; An eccentric sleeve is fitted onto the outer wall of the rotating shaft; The first end of the push module is fixedly connected to the outer circumferential surface of the eccentric sleeve, and the base is provided with an arc-shaped guide groove. The second end of the push module is slidably disposed in the arc-shaped guide groove.

9. A foot massager with a single-axis drive structure as described in claim 8, characterized in that, The axis of the rotating shaft is parallel to the axis of the pivot, and the axis of the rotating shaft is located offset to one side of the axis of the pivot within the base.

10. A massage chair, characterized in that, Including the foot massager as described in any one of claims 1 to 9.

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