A waist massager

Abstract

The waist massager comprises a flexible connecting piece and two massage assemblies arranged at two ends of the flexible connecting piece respectively; the massage assembly comprises a base, a sliding seat, a massage head, a reciprocating screw, a sliding block, a motor, a gear set and a connecting belt; the base is fixedly connected with the flexible connecting piece; the sliding seat is slidingly connected with the base; the massage head is rotatably connected with the sliding seat; the reciprocating screw is rotatably connected with the sliding seat; the reciprocating screw is provided with a reciprocating thread; the sliding block is arranged on the base; the sliding block is provided with a sliding protrusion; the sliding protrusion is slidingly connected with the reciprocating thread; the motor and the gear set are arranged in the sliding seat; the motor is drivingly connected with the massage head and the reciprocating screw through the gear set; and the connecting belt is connected with the base. The flexible connecting piece allows the two massage assemblies to relatively twist and swing to fit different waist curves; the sliding of the sliding seat enables the interval to be self-adaptively adjusted, so that sufficient contact and uniform force can be ensured.

Description

Technical Field

[0001] This invention relates to the field of massage equipment technology, and more particularly to a waist massager. Background Technology

[0002] Currently, lumbar massagers, as a common health care device, have been widely adopted in homes and offices. Existing reciprocating lumbar massagers typically have an internal drive motor, which is connected to two massage heads. This motor synchronously drives the two massage heads to rotate while simultaneously sliding back and forth along a predetermined trajectory, thereby simulating kneading, kneading, and other massage movements to achieve a massage effect on the lumbar muscles.

[0003] However, in the aforementioned existing reciprocating waist massagers, the two massage heads are rigidly limited by the same drive motor, and the angle between them is fixed, making it impossible to adaptively adjust according to the user's actual waist curve. Because different users have individual differences in waist width and curve curvature, the two massage heads with a fixed angle cannot closely conform to the waist contours of different users, resulting in insufficient contact between the massage heads and the waist, uneven distribution of massage intensity, and poor applicability. Summary of the Invention

[0004] In view of this, the present invention provides a waist massager to solve the problem that the angle between the two massage heads in the prior art is fixed and cannot be adjusted according to the waist curve, resulting in poor fit and poor applicability.

[0005] To achieve one, some, or all of the above objectives, or other objectives, the present invention provides a lumbar massager, comprising a flexible connector and two massage components respectively disposed at both ends of the flexible connector; each massage component includes a base, a slide, a massage head, a reciprocating screw, a sliding block, a motor, a gear set, and a connecting belt. One end of the base is fixedly connected to one end of the flexible connector, the slide is slidably connected to the base and can slide along the length of the base, the massage head is rotatably connected to the side wall of the slide facing away from the base, and the reciprocating screw is rotatably connected to the side wall of the slide facing the base. On one side wall of the base and along its length, the reciprocating screw has a reciprocating thread on its peripheral side wall. The sliding block is disposed adjacent to the reciprocating screw on the base. The sliding block has a sliding protrusion that is slidably connected to the reciprocating thread. The motor and gear set are both disposed inside the slide. The output shaft of the motor is connected to the massage head and the reciprocating screw respectively through the gear assembly. The connecting belt is connected to the end of the base away from the flexible connector. The connecting belts of the two massage components can be connected to each other to bind the waist massager to the user's waist.

[0006] Preferably, the massage assembly further includes a ring-shaped main board, which is fixedly laid on the side wall of the slide away from the base and electrically connected to the motor. The massage head is rotatably connected to the slide through the hollow part of the main board. The massage head is made of a light-transmitting material and has a concave-convex structure. The massage head and the side wall of the slide away from the base enclose the main board. Multiple LED beads are evenly distributed on the main board.

[0007] Preferably, the motherboard is provided with a first Hall sensor, and the inner sidewall of the massage head is provided with a first magnet; when the massage head rotates, the first magnet passes through the first Hall sensor as the massage head rotates, thereby triggering the first Hall sensor.

[0008] Preferably, a second Hall sensor is provided inside the slide block, the second Hall sensor is electrically connected to the motherboard, and a second magnet is provided on the base; when the slide block slides, the second Hall sensor slides past the second magnet to trigger the second Hall sensor.

[0009] Preferably, the gear set includes a turbine, a second spur gear, a third spur gear, and a fifth spur gear rotatably connected within the housing; the output shaft of the motor meshes with the turbine; a first spur gear is coaxially fixed to the turbine; the first spur gear meshes with the second spur gear; the second spur gear meshes with the third spur gear; a fourth spur gear is coaxially fixed to the third spur gear; the fourth spur gear meshes with the fifth spur gear; a through hole is provided on the side wall of the slide away from the base; a connecting shaft is coaxially fixed to the fifth spur gear; the connecting shaft passes through the through hole and is coaxially fixed to the massage head; a first helical gear is coaxially connected to the side of the third spur gear away from the fourth spur gear; a second helical gear is coaxially fixed to one end of the reciprocating screw; the second helical gear meshes with the first helical gear.

[0010] Preferably, the third spur gear is rotatably connected to the first helical gear via a one-way bearing.

[0011] Preferably, the base is provided with a clearance opening and a sliding cavity connecting to the clearance opening in sequence along its length direction. The reciprocating screw is slidably sleeved in the sliding cavity. The base is provided with a transition cavity that connects to one side wall of the sliding cavity. The axis of the transition cavity is perpendicular to the axis of the sliding cavity. The sliding block is rotatably connected in the transition cavity. The sliding protrusion extends into the sliding cavity and is slidably connected to the reciprocating thread.

[0012] Preferably, the waist massager further includes an inner cover, which is detachably fitted onto the side wall of the base away from the slide, and together with the side wall of the slide, forms a sliding cavity and a transition cavity.

[0013] Preferably, the base is provided with a through groove, the groove is provided along the length of the base, the slide is provided with a sliding joint, the sliding joint is slidably connected in the groove, the end of the sliding joint away from the slide is detachably connected to a limiting plate, and a raised flange is provided along the edge of the groove on the side wall of the base away from the slide, the cross-section of the flange is semi-circular, and the limiting plate abuts against the flange.

[0014] Preferably, the flexible connector is sheet-shaped, with its middle portion bent to one side into a semi-circular curved portion, the axis of which is perpendicular to the line connecting the two massage components.

[0015] Implementing the embodiments of the present invention will have the following beneficial effects:

[0016] After adopting the above-mentioned waist massager, during use, the two massage components are placed against the user's waist on both sides, with the flexible connector spanning across the back or front of the waist. The two massage components are then connected by a connecting strap, thus securing the waist massager to the user's waist. When the motor starts, it drives the massage head to rotate and the reciprocating screw to rotate simultaneously via a gear set. The rotation of the reciprocating screw, through the engagement of the reciprocating thread and the sliding protrusion, converts the rotational motion into the reciprocating sliding motion of the slide relative to the base. This allows the massage head to move back and forth along the length of the base while rotating, expanding the effective range of the massage head. Because the flexible connector allows for relative torsion and oscillation between the two massage components, each component can conform to the different waist curves of different users, avoiding the angle fixation problem caused by rigid connections. Simultaneously, the sliding of the slide relative to the base allows the distance between the two massage heads to adaptively adjust according to the waist width, ensuring that the massage heads always maintain full contact with the waist, resulting in even massage intensity distribution and significantly improving the applicability and user experience of the massager. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] in:

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is an exploded view of the massage component in this invention from a top-down perspective;

[0021] Figure 3 for Figure 2Enlarged view of point A in the middle;

[0022] Figure 4 This is an exploded view of the massage component in this invention from a low angle;

[0023] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0024] Figure 6 A cross-sectional view of the massage component in this invention. Figure 1 ;

[0025] Figure 7 A cross-sectional view of the massage component in this invention. Figure 2 .

[0026] In the diagram: 1. Flexible connector; 101. Bending part; 2. Base; 21. Sliding cavity; 22. Transfer cavity; 23. Sliding groove; 24. Flange; 25. Clearance opening; 26. Second magnet; 3. Sliding seat; 31. Sliding joint; 311. Limiting plate; 32. Through hole; 33. Second Hall sensor; 34. Main board; 341. LED bead; 342. First Hall sensor; 4. Massage head; 41. Massage protrusion; 42. First magnet; 5. Reciprocating screw; 51. Second helical gear; 6. Sliding block; 61. Sliding protrusion; 7. Motor; 81. Turbine; 82. Second spur gear; 83. Third spur gear; 831. One-way bearing; 84. Fifth spur gear; 841. Connecting shaft; 85. First spur gear; 86. Fourth spur gear; 87. First helical gear; 10. Inner cover; 11. Outer cover. Detailed Implementation

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects and not to describe a particular order.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] like Figure 1-7 As shown, a waist massager includes a flexible connector 1 and two massage components respectively disposed at both ends of the flexible connector 1. Each massage component includes a base 2, a slide 3, a massage head 4, a reciprocating screw 5, a sliding block 6, a motor 7, a gear set, and a connecting belt (not shown in the figure). One end of the base 2 is fixedly connected to one end of the flexible connector 1. The slide 3 is slidably connected to the base 2 and can slide along the length direction of the base 2. The massage head 4 is rotatably connected to the side wall of the slide 3 away from the base 2. The reciprocating screw 5 is rotatably connected to the side wall of the slide 3 facing the base 2 and is disposed along the length direction of the base 2. The reciprocating screw 5 has reciprocating threads on its peripheral side wall. The sliding block 6 and the... The reciprocating screw 5 is arranged adjacent to the base 2. The sliding block 6 is provided with a sliding protrusion 61, which is slidably connected to the reciprocating screw. The motor 7 and the gear set are both arranged in the slide 3. The output shaft of the motor 7 is connected to the massage head 4 and the reciprocating screw 5 respectively through the gear assembly. The connecting strap is connected to the end of the base 2 away from the flexible connector 1. The connecting straps of the two massage components can be connected to each other to bind the waist massager to the user's waist. When in use, the two massage components are placed against the two sides of the user's waist, so that the flexible connector 1 spans across the back or front of the waist. Then, the waist massager can be bound to the user's waist by connecting the connecting straps on the two massage components. When motor 7 starts, it simultaneously drives the massage head 4 to rotate and the reciprocating screw 5 to rotate via a gear set. When the reciprocating screw 5 rotates, it converts the rotational motion into the reciprocating sliding motion of the slide 3 relative to the base 2 through the cooperation of the reciprocating thread and the sliding protrusion 61. This allows the massage head 4 to move back and forth along the length of the base 2 while rotating and massaging, thus expanding the effective range of the massage head 4. Since the flexible connector 1 allows relative torsion and oscillation between the two massage components, the two massage components can fit the waist curves of different users respectively, avoiding the angle fixation problem caused by rigid connection. At the same time, the sliding of the slide 3 relative to the base 2 allows the distance between the two massage heads 4 to be adaptively adjusted according to the waist width, ensuring that the massage head 4 always maintains full contact with the waist and the massage intensity is evenly distributed, significantly improving the applicability and user experience of the massager.

[0031] In this embodiment, the massage assembly also includes a ring-shaped main board 34. The main board 34 is fixedly laid on the side wall of the slide 3 away from the base 2 and is electrically connected to the motor 7. The main board 34 is used to control the start, stop, and forward / reverse rotation of the motor 7. The user can send control commands to the main board 34 by operating the control circuit on the main board 34 or by using an external remote control. The main board 34 controls the motor 7 to start, stop, or switch the rotation direction according to the received commands. The massage head 4 is rotatably connected to the slide 3 through the hollow part of the main board 34. The massage head 4 is made of a light-transmitting material and has a concave-convex structure. The massage head 4 and the slide 3 enclose the main board 34 on one side wall away from the base 2. Multiple LED beads 341 are evenly distributed on the main board 34. The light emitted by the LED beads 341 on the main board 34 can pass through the massage head 4 and shine on the user's waist skin, providing phototherapy function while massaging, thus enriching the functions of the massager. The LED beads 341 are evenly distributed on the annular main board 34, which can provide uniform light coverage to the waist area and improve the phototherapy effect. The concave and convex structure of the massage head 4 makes its contact surface with the waist skin more ergonomic and improves wearing comfort.

[0032] In one embodiment, multiple massage protrusions 41 are distributed circumferentially on the side wall of the massage head 4 away from the slide 3. The height and diameter of the multiple massage protrusions 41 are different and gradually increase circumferentially. During the rotation of the massage head 4, the multiple massage protrusions 41 rotate synchronously with the massage head 4. Since the height and diameter of each massage protrusion 41 gradually increase circumferentially, the massage protrusions 41 generate a gradual pressure when they contact the user's waist. As the massage head 4 continues to rotate, the massage protrusions 41 with gradually increasing height and diameter contact the waist in sequence, and the pressure gradually increases, simulating a kneading feel from light to heavy, further enriching the massage mode and user experience of the massager.

[0033] In this embodiment, the motherboard 34 is provided with a first Hall sensor 342, and the inner sidewall of the massage head 4 is provided with a first magnet 42. When the massage head 4 rotates, the first magnet 42 rotates with the massage head 4 and passes through the first Hall sensor 342 to trigger the first Hall sensor 342. When the first magnet 42 rotates with the massage head 4 to a position opposite to the first Hall sensor 342, the first Hall sensor 342 is triggered to generate a sensing signal. Through the cooperation of the first Hall sensor 342 and the first magnet 42, the motherboard 34 can detect the rotation angle and number of rotations of the massage head 4 in real time, thereby accurately controlling the rotation position and speed of the massage head 4, and realizing the precise switching and adjustment of different massage modes.

[0034] In this embodiment, a second Hall sensor 33 is provided inside the slide block 3. The second Hall sensor 33 is electrically connected to the main board 34, and a second magnet 26 is provided on the base 2. When the slide block 3 slides, the second Hall sensor 33 slides past the second magnet 26 to trigger the second Hall sensor 33. When the slide block 3 slides relative to the base 2, the second Hall sensor 33 moves synchronously with the slide block 3 and passes the second magnet 26 fixedly set on the base 2 during the movement, thereby triggering the second Hall sensor 33 to generate a sensing signal. The main board 34 can detect the sliding position and sliding stroke of the slide block 3 in real time, thereby accurately controlling the reciprocating movement range of the slide block 3, avoiding structural damage caused by the slide block 3 overtravel, and providing position feedback for switching between different modes such as fixed-point massage and moving massage.

[0035] In this embodiment, the gear set includes a turbine 81, a second spur gear 82, a third spur gear 83, and a fifth spur gear 84, which are rotatably connected to the housing in sequence. The output shaft of the motor 7 meshes with the turbine 81. A first spur gear 85 is coaxially fixed to the turbine 81. The first spur gear 85 meshes with the second spur gear 82. The second spur gear 82 meshes with the third spur gear 83. A fourth spur gear 86 is coaxially fixed to the third spur gear 83. The fourth spur gear 86 meshes with the fifth spur gear 84. A through hole 32 is provided on the side wall of the slide block 3 away from the base 2. A connecting shaft 841 is coaxially fixed to the fifth spur gear 84. The connecting shaft 841 passes through the through hole 32 and is coaxially fixed to the massage head 4. A first helical gear 87 is coaxially connected to the side of the third spur gear 83 away from the fourth spur gear 86. A second helical gear 51 is coaxially fixed to one end of the reciprocating screw 5. The second helical gear 51 meshes with the first helical gear 87. The transmission logic is as follows: After the motor 7 starts, the output shaft of the motor 7 drives the turbine 81 to rotate. The turbine 81 drives the first spur gear 85, which is fixed to the same axis as it, to rotate synchronously. The first spur gear 85 meshes with the second spur gear 82 and the third spur gear 83 in sequence. The third spur gear 83 drives the fifth spur gear 84 to rotate through the fourth spur gear 86, which is fixed to the same axis as it. The fifth spur gear 84 drives the massage head 4 to rotate through the connecting shaft 841. On the other hand, the third spur gear 83 drives the second helical gear 51 to rotate through the first helical gear 87. The second helical gear 51 then drives the reciprocating screw 5 to rotate, thereby realizing the dual output of a single motor 7 driving the massage head 4 to rotate and the reciprocating screw 5 to rotate simultaneously.

[0036] In this embodiment, the third spur gear 83 is rotatably connected to the first helical gear 87 via a one-way bearing 831. The function of the one-way bearing 831 is that it can drive the first helical gear 87 to rotate only when the third spur gear 83 rotates in a specific direction. When the third spur gear 83 rotates in the reverse direction, the one-way bearing 831 idles and does not drive the first helical gear 87 to rotate. At this time, the reciprocating screw 5 does not rotate, the slide 3 does not slide, and only the massage head 4 performs fixed-point rotational massage. Through the directional transmission design of the one-way bearing 831, when the motor 7 rotates forward, the third spur gear 83 drives the first helical gear 87 to rotate via the one-way bearing 831, thereby driving the reciprocating screw 5 to rotate, so that the massage head 4 moves back and forth along the base 2 while rotating, realizing a moving kneading massage. When the motor 7 rotates in the reverse direction, the one-way bearing 831 disengages from the transmission, the reciprocating screw 5 stops rotating, the slide 3 stops sliding, and only the massage head 4 rotates in place, realizing fixed-point massage. Therefore, users can freely switch between fixed-point rotational massage and moving kneading massage by switching the forward and reverse directions of motor 7, thus enriching the massage modes of the massager.

[0037] In this embodiment, the base 2 is provided with a clearance opening 25 and a sliding cavity 21 that connects to the clearance opening 25 in sequence along its length. The reciprocating screw 5 is slidably sleeved in the sliding cavity 21. The base 2 is provided with a transition cavity 22 that connects to one side wall of the sliding cavity 21. The axis of the transition cavity 22 is perpendicular to the axis of the sliding cavity 21. The sliding block 6 is rotatably connected in the transition cavity 22. The sliding protrusion 61 extends into the sliding cavity 21 and is slidably connected to the reciprocating thread. When the reciprocating screw 5 rotates, the reciprocating thread drives the sliding protrusion 61 to slide along it. When the sliding protrusion 61 slides along the thread groove under the drive of the reciprocating thread, its reaction force will drive the reciprocating screw 5 to move axially, thereby driving the slide block 3 to slide relative to the base 2. During this process, the sliding block 6 rotates adaptively in the transition cavity 22 as the sliding protrusion 61 slides, so as to ensure that the sliding protrusion 61 always maintains good contact with the reciprocating thread. By fitting the reciprocating screw 5 into the sliding cavity 21, the sliding cavity 21 guides and limits the axial movement of the reciprocating screw 5, ensuring smooth sliding of the reciprocating screw 5. The axis of the transition cavity 22 is set perpendicular to the axis of the sliding cavity 21, so that the sliding block 6 can rotate in a plane perpendicular to the axis of the reciprocating screw 5, adaptively following the helical trajectory of the reciprocating thread, avoiding jamming between the sliding protrusion 61 and the reciprocating thread, and ensuring smooth transmission.

[0038] In this embodiment, the waist massager also includes an inner cover 10. The inner cover 10 is detachably fitted onto the side wall of the base 2 opposite to the slide 3, and together with the side wall of the slide 3, forms a sliding cavity 21 and a transition cavity 22. During assembly, internal components such as the reciprocating screw 5 and the sliding block 6 can be installed to their respective positions on the base 2 first, and then the inner cover 10 can be fitted onto the base 2, so that the inner cover 10 and the base 2 together form the sliding cavity 21 and the transition cavity 22, encapsulating the reciprocating screw 5 and the sliding block 6 inside. The detachable design of the inner cover 10 not only facilitates the installation and disassembly of internal components, reducing assembly difficulty and improving production efficiency, but also protects the moving parts in the sliding cavity 21 and the transition cavity 22 from dust and debris.

[0039] In one embodiment, the waist massager also includes an outer cover 11, which is detachably fitted onto the side wall of the base 2 away from the slide 3 to prevent foreign objects from entering the clearance opening 25 and avoid affecting the movement of the reciprocating screw 5.

[0040] In this embodiment, the base 2 is provided with a through groove 23, which is arranged along the length of the base 2. The slide 3 is provided with a sliding joint 31, which is slidably connected in the groove 23. The end of the sliding joint 31 away from the slide 3 is detachably connected to a limiting plate 311. The side wall of the base 2 away from the slide 3 is provided with a protruding flange 24 along the edge of the groove 23. The cross-section of the flange 24 is semi-circular. The limiting plate 311 abuts against the flange 24. The slide 3 is slidably connected in the groove 23 through the sliding joint 31, realizing the sliding fit between the slide 3 and the base 2. The limiting plate 311 is connected to the end of the sliding joint 31 away from the slide 3 and abuts against the flange 24 on the side wall of the base 2 away from the slide 3, thereby limiting the slide 3 to the base 2 and preventing the slide 3 from detaching from the base 2. The flange 24 has a semi-circular cross-section. Its arc surface has a small contact area with the limiting plate 311 and low frictional resistance, which can effectively reduce the sliding resistance of the limiting plate 311 during the sliding process and make the slide block 3 slide more smoothly. At the same time, the sliding part 31 and the limiting plate 311 are set as a separate and detachable structure, which makes it easy to insert the sliding part 31 into the slide groove 23 during assembly, and then install the limiting plate 311 at the end of the sliding part 31 to complete the limiting, which reduces the assembly difficulty and improves the assembly efficiency.

[0041] In this embodiment, the flexible connector 1 is sheet-shaped, with its central portion bent to one side into a semi-circular curved portion 101. The axis of the curved portion 101 is perpendicular to the line connecting the two massage components. The flexible connector 1 can be made of fabric or plastic, and in this embodiment, silicone is preferred. During use, the curved portion 101 is located on the back or front of the user's waist. When the two massage components are pulled to both sides and tied to the waist with connecting straps, the curved portion 101 can undergo elastic deformation under force, thereby offsetting the stress concentration in the central part of the flexible connector 1, preventing fatigue fracture of the flexible connector 1 due to repeated bending, and extending the product's service life. In one embodiment, to keep the two massage components basically symmetrical and facilitate symmetrical wearing by the user, the flexible connector 1 can also be made of plastic material with a certain degree of hardness, so that the two massage components maintain a preset symmetrical position when not worn, eliminating the need for additional alignment adjustments when wearing, thus improving the convenience of wearing.

[0042] In one embodiment, the connecting strap can be used to achieve a detachable connection between the two massage components through methods such as snaps, Velcro, buttons, or ties; in this embodiment, Velcro is preferred. With Velcro, the user can flexibly adjust the tightness and position of the fastening according to their waist size, making the operation simple and quick. Furthermore, the hook and loop sides of the Velcro are respectively positioned on the connecting strap of the two massage components, allowing for easy alignment and adhesion.

[0043] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the scope of the patent. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this invention.

Claims

1. A waist massager, characterized in that, include: A flexible connector and two massage components respectively disposed at both ends of the flexible connector; Each massage component includes a base, a slide, a massage head, a reciprocating screw, a sliding block, a motor, a gear set, and a connecting belt. One end of the base is fixedly connected to one end of the flexible connector. The slide is slidably connected to the base and can slide along the length of the base. The massage head is rotatably connected to the side wall of the slide away from the base. The reciprocating screw is rotatably connected to the side wall of the slide facing the base and is arranged along the length of the base. The reciprocating screw has reciprocating threads on its peripheral side wall. The sliding block is arranged adjacent to the reciprocating screw on the base and has sliding protrusions that are slidably connected to the reciprocating threads. The motor and gear set are both located inside the slide. The output shaft of the motor is connected to the massage head and the reciprocating screw respectively through the gear assembly. The connecting belt is connected to the end of the base away from the flexible connector. The connecting belts of two massage components can be connected to each other to bind the waist massager to the user's waist.

2. A waist massager according to claim 1, characterized in that, The massage assembly also includes a ring-shaped main board, which is fixedly laid on the side wall of the slide away from the base and electrically connected to the motor. The massage head is rotatably connected to the slide through the hollow part of the main board. The massage head is made of light-transmitting material and has a concave-convex structure. The massage head and the side wall of the slide away from the base enclose the main board. Multiple LED beads are evenly distributed on the main board.

3. A waist massager according to claim 2, characterized in that, The motherboard is equipped with a first Hall sensor, and the inner wall of the massage head is equipped with a first magnet; When the massage head rotates, the first magnet passes through the first Hall sensor as the massage head rotates, thereby triggering the first Hall sensor.

4. A waist massager according to claim 3, characterized in that, The slide block is equipped with a second Hall sensor, which is electrically connected to the main board, and the base is equipped with a second magnet. When the slide block slides, the second Hall sensor slides past the second magnet to trigger the second Hall sensor.

5. A waist massager according to claim 1, characterized in that, The gear set includes a turbine, a second spur gear, a third spur gear, and a fifth spur gear that are rotatably connected to the housing in sequence; The output shaft of the motor meshes with a turbine. A first spur gear is coaxially fixed to the turbine. The first spur gear meshes with a second spur gear. The second spur gear meshes with a third spur gear. A fourth spur gear is coaxially fixed to the third spur gear. The fourth spur gear meshes with a fifth spur gear. A through hole is provided on the side wall of the slide away from the base. A connecting shaft is coaxially fixed to the fifth spur gear. The connecting shaft passes through the through hole and is coaxially fixed to the massage head. A first helical gear is coaxially connected to the side of the third spur gear away from the fourth spur gear. A second helical gear is coaxially fixed to one end of the reciprocating screw. The second helical gear meshes with the first helical gear.

6. A waist massager according to claim 5, characterized in that, The third spur gear is rotatably connected to the first helical gear via a one-way bearing.

7. A waist massager according to claim 1, characterized in that, The base is provided with a clearance opening and a sliding cavity connecting to the clearance opening in sequence along its length direction. The reciprocating screw is slidably sleeved in the sliding cavity. The base is provided with a transition cavity that connects to one side wall of the sliding cavity. The axis of the transition cavity is perpendicular to the axis of the sliding cavity. The sliding block is rotatably connected in the transition cavity. The sliding protrusion extends into the sliding cavity and is slidably connected to the reciprocating thread.

8. A waist massager according to claim 7, characterized in that, The waist massager also includes an inner cover, which is detachably fitted onto the side wall of the base away from the slide, and together with the side wall of the slide, forms a sliding cavity and a transition cavity.

9. A waist massager according to claim 1, characterized in that, The base is provided with a through groove, which is arranged along the length of the base. The slide is provided with a sliding joint, which is slidably connected in the groove. A limiting plate is detachably connected to the end of the sliding joint away from the slide. A raised flange is provided along the edge of the groove on the side wall of the base away from the slide. The cross-section of the flange is semi-circular. The limiting plate abuts against the flange.

10. A waist massager according to claim 1, characterized in that, The flexible connector is sheet-shaped, with its middle portion bent to one side into a semi-circular curved portion, the axis of which is perpendicular to the line connecting the two massage components.

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