Back massager

Abstract

This invention discloses a back massager, comprising a massager body, a locking component, a first support, and a second support. Both the first and second supports are mounted on the massager body and are hinged together. The first and second supports can drive the massager body to rotate between a flattened position and at least one bent position. The locking component is used to lock the massager body in the flattened position or any bent position. The back massager of this embodiment adjusts the angle between the first and second supports through the locking component, thereby achieving flattening and bending of the massager body at different angles. In the flattened state, it can be used for back massage; when bent at a specific angle, it can be used as a nap pillow, satisfying massage comfort in different body postures. The overall structure is simple and has high functionality and reliability.

Description

Technical Field

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

[0002] Back massagers can massage and relax the back, relieving fatigue. There are various types of back massagers, such as chair massagers, shoulder massagers, and backrest massagers. However, most back massagers in this technology only have a single massage function and are relatively poor in functionality. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a multifunctional back massager.

[0005] The back massager of this invention includes a massager body, a locking component, a first bracket, and a second bracket. The first bracket and the second bracket are both disposed on the massager body and are hinged together. The first bracket and the second bracket can drive the massager body to rotate between a flat position and at least one bent position. The locking component is used to lock the massager body in the flat position or any of the bent positions.

[0006] The back massager of this invention adjusts the angle of the first support and the second support through a locking component, thereby realizing the flattening and bending of the massager body at different angles. In the flattened state, it can be used for back massage, and in the bent state, it can be used as a nap pillow, satisfying the massage comfort of the human body in different postures. The overall structure is simple and has high functionality and reliability.

[0007] In some embodiments, the locking assembly includes a locking member and a locking member, the locking member being movably disposed on one of the first bracket and the second bracket, and the locking member being mounted on the other of the first bracket and the second bracket, the locking member cooperating with the locking member to lock the instrument body in the flattened position or any of the bent positions.

[0008] In some embodiments, the back massager further includes a pre-positioning component, which includes the positioning member and the positioning part. The positioning member is movably disposed on one of the first support and the second support, and the positioning part is disposed on the other of the first support and the second support, or the positioning part is disposed on the locking member. The positioning member can cooperate with the positioning part to pre-position the massager body in the flattened position or the bent position.

[0009] In some embodiments, the locking member is a locking gear, the first bracket and the second bracket are hinged by a rotating shaft, the locking gear is connected to the rotating shaft and can rotate with the rotating shaft, the locking member includes a push plate and a driving member, the push plate is slidably disposed on the first bracket and / or the second bracket, and the driving member is connected to the push plate and can drive the push plate to slide.

[0010] In some embodiments, the first bracket is provided with a groove extending radially along the locking gear, the push plate is slidably disposed in the groove, the first end of the push plate is connected to the drive member, and the second end of the push plate is provided with a first tooth portion that can mesh with the locking gear.

[0011] The locking assembly further includes a first elastic element. The push plate is provided with a strip-shaped hole extending along its length direction. The first bracket is provided with a baffle and the baffle is located in the strip-shaped hole. The first elastic element is provided in the strip-shaped hole and is located on the side of the baffle adjacent to the locking gear. One end of the first elastic element abuts against the baffle, and the second end of the first elastic element abuts against the hole wall of the strip-shaped hole.

[0012] The driving component includes a button, a slanted shovel, and a second elastic element. The first bracket is provided with a slanted groove communicating with the slide groove. The push plate is provided with a slanted hole communicating with the slanted groove. The slanted shovel includes a vertical section and an inclined section. The button passes through the first bracket and is connected to one end of the vertical section. The other end of the vertical section is connected to the inclined section. The inclined section passes through the slanted hole and is slidably fitted in the slanted groove. One end of the second elastic element abuts against the button, and the other end of the second elastic element abuts against the first bracket.

[0013] In some embodiments, the first bracket includes a first frame, a first decorative panel, and a top cover, wherein the top cover and the first decorative panel are detachably mounted on the first frame, the top cover is disposed on the slide groove, and the first decorative panel is disposed on the top cover.

[0014] The top cover includes a connected cylindrical component, a plate-shaped component, and a limiting plate. The cylindrical component is sleeved on the outside of the locking gear, and the plate-shaped component covers the sliding groove. The plate-shaped component is detachably connected to the first frame. The cylindrical component has a notch, and the limiting plate is located inside the notch with one end connected to the cylindrical component. The inner surface of the limiting plate has a second tooth that can mesh with the locking gear.

[0015] In some embodiments, the positioning portion is a plurality of positioning grooves disposed on the end face of the locking gear, and the plurality of positioning grooves are arranged at intervals along the circumference of the locking gear.

[0016] The positioning component is a ball screw. The first bracket has a first hinge seat, and the second bracket has a second hinge seat. The rotating shaft passes through the locking gear, the first hinge seat, and the second hinge seat. The first hinge seat and / or the second hinge seat are provided with mounting grooves. The ball screw is installed in the mounting groove. The end of the ball screw can cooperate with the positioning groove to pre-position the massager body in the flat position or any of the bent positions.

[0017] In some embodiments, the first bracket and the second bracket are hinged by a pivot, the first bracket having a first hinge seat and the second bracket having a second hinge seat, the pivot passing through the first hinge seat and the second hinge seat and being fixed relative to one of them, the locking member being mounted on the first hinge seat and the locking member being mounted on the second hinge seat, the locking member passing through the first hinge seat to engage with the locking member.

[0018] In some embodiments, the locking assembly further includes a first baffle, a first mounting groove is provided on the first hinge seat, the first baffle is installed in the first mounting groove, a guide hole is provided on the first baffle, the locking member includes a pressing part and a locking rod, the pressing part is slidably installed in the guide hole, one end of the locking rod is connected to the pressing part, the locking member has a plurality of stop teeth, the other end of the locking rod is provided with a protruding tooth that can mesh with the stop teeth, and the locking rod passes through the first hinge seat.

[0019] The locking assembly further includes an elastic element that passes through the guide hole, with one end of the elastic element abutting against the pressing part and the other end of the elastic element abutting against the first hinge seat.

[0020] The second hinge seat is provided with a second mounting groove, the locking member is installed in the second mounting groove, the stop teeth are provided on the inner peripheral wall of the locking member, and a plurality of the stop teeth are arranged at intervals along the circumference of the rotating shaft, and the stop teeth are located at one end of the locking member near the opening of the second mounting groove.

[0021] In some embodiments, the positioning part is a positioning disk, which is mounted on the second hinge seat. The positioning disk is provided with a plurality of positioning grooves, which are arranged at circumferential intervals along the rotating shaft. The positioning member is movably mounted on the first hinge seat along the axial direction of the rotating shaft. The end of the positioning member can cooperate with the positioning groove to pre-position the massager body in the flattened position or any of the bent positions.

[0022] The pre-positioning component further includes a second baffle, the positioning member is mounted on the second baffle, there are two first hinge seats, the two first hinge seats are arranged axially spaced along the rotating shaft, the second hinge seat is located between the two first hinge seats, the locking member and the positioning member are respectively disposed on the two first hinge seats, the first hinge seat is provided with a third mounting groove, the second baffle is installed in the third mounting groove, the second hinge seat is provided with a fourth mounting groove, the positioning plate is installed in the fourth mounting groove, and the positioning member passes through the first hinge seat to cooperate with the positioning plate.

[0023] In some embodiments, the first bracket and the second bracket are hinged by a pivot, the first bracket having a first hinge seat and the second bracket having a second hinge seat, the pivot passing through the first hinge seat and the second hinge seat and being fixed relative to one of them, the locking member being mounted on the first hinge seat and the locking member being mounted on the second hinge seat, the locking member passing through the first hinge seat to engage with the locking member.

[0024] In some embodiments, the locking assembly further includes a mounting base, the first hinge base being hollow inside, the mounting base being detachably mounted on the first hinge base, the mounting base and the first hinge base defining a sliding cavity, and at least a portion of the locking member being slidably disposed within the sliding cavity.

[0025] The locking component includes a toggle switch, a connecting rod, and a push rod. The push rod is disposed within the sliding cavity. The first bracket has a through hole communicating with the sliding cavity. The connecting rod is slidably disposed within the through hole along the axial direction of the rotating shaft. The first end of the connecting rod is connected to the toggle switch, and the second end of the connecting rod is connected to the first end of the push rod. The second end of the push rod has a protruding tooth extending along the axial direction of the rotating shaft. The locking component has multiple stop teeth, and the protruding teeth penetrate the first hinge seat and the second hinge seat to engage with the stop teeth.

[0026] The locking assembly further includes an elastic element disposed within the sliding cavity and located on the side of the push rod away from the locking member. One end of the elastic element abuts against the push rod, and the other end of the elastic element abuts against the inner wall of the first hinge seat.

[0027] There are two second hinge seats, which are arranged axially spaced along the rotating shaft. The first hinge seat is located between the two second hinge seats. The locking member is installed on one of the second hinge seats. The stop teeth are arranged on the inner peripheral wall of the locking member. A plurality of the stop teeth are arranged circumferentially spaced along the rotating shaft.

[0028] In some embodiments, the positioning part is a positioning disk, which is mounted on the first hinge seat and has a plurality of positioning grooves. The positioning member is movably mounted on the second hinge seat along the axial direction of the rotating shaft. The positioning member and the locking member are respectively disposed on two second hinge seats. The end of the positioning member can cooperate with the positioning groove to preposition the massager body in the flattened position or any of the bent positions.

[0029] The pre-positioning component further includes a baffle, the positioning element is mounted on the baffle, the second hinge seat is provided with a first mounting groove, the baffle is installed in the first mounting groove, the first hinge seat is provided with a second mounting groove, the positioning disk is installed in the second mounting groove, and the positioning element passes through the second hinge seat to cooperate with the positioning disk.

[0030] The positioning component is a ball screw. The baffle is provided with a mounting post extending axially along the rotating shaft. The mounting post passes through the second hinge seat. A third mounting groove is provided at one end of the mounting post adjacent to the second hinge seat. The ball screw is disposed in the third mounting groove.

[0031] In some embodiments, the back massager further includes an outer cover. The massager body has a first groove and a second groove. The first support includes a first frame and a first decorative panel. The second support includes a second frame and a second decorative panel. The first frame is embedded in the first groove, and the second frame is embedded in the second groove. The outer cover covers the massager body, the first frame, and the second frame. The first decorative panel is pressed onto the outer cover and detachably connected to the first frame. The second decorative panel is pressed onto the outer cover and detachably connected to the second frame. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the back massager in its flattened state according to Embodiment 1 of the present invention.

[0033] Figure 2 This is a schematic diagram of the massager body according to Embodiment 1 of the present invention.

[0034] Figure 3 This is a schematic diagram of the top cover of the back massager according to Embodiment 1 of the present invention.

[0035] Figure 4 This is a schematic diagram of the first frame of the back massager according to Embodiment 1 of the present invention.

[0036] Figure 5 This is a schematic diagram of the second frame of the back massager according to Embodiment 1 of the present invention.

[0037] Figure 6 This is a schematic diagram of the locking component of the back massager according to Embodiment 1 of the present invention.

[0038] Figure 7 This is a cross-sectional schematic diagram of the locking component of the back massager according to Embodiment 1 of the present invention.

[0039] Figure 8 This is a schematic diagram of the plate of the back massager according to Embodiment 1 of the present invention.

[0040] Figure 9 This is a schematic diagram of the back massager in its flattened state according to Embodiment 2 of the present invention.

[0041] Figure 10 This is an exploded view of the back massager of Embodiment 2 of the present invention.

[0042] Figure 11 yes Figure 10 A magnified view of a portion of point A in the middle.

[0043] Figure 12 This is a schematic diagram of the locking component of the back massager according to Embodiment 2 of the present invention.

[0044] Figure 13 This is a schematic diagram of the pre-positioning component of the back massager according to Embodiment 2 of the present invention.

[0045] Figure 14 This is a schematic diagram of the first frame of the back massager according to Embodiment 2 of the present invention.

[0046] Figure 15 This is a schematic diagram of the second frame of the back massager according to Embodiment 2 of the present invention.

[0047] Figure 16 This is a schematic diagram of the locking component of the back massager according to Embodiment 2 of the present invention.

[0048] Figure 17 This is a schematic diagram of the locking component of the back massager according to Embodiment 2 of the present invention.

[0049] Figure 18 This is a schematic diagram of the first baffle of the back massager according to Embodiment 2 of the present invention.

[0050] Figure 19 This is a schematic diagram of the back massager in its flattened state according to Embodiment 3 of the present invention.

[0051] Figure 20 This is a schematic diagram of an exploded view of the back massager of Embodiment 3 of the present invention.

[0052] Figure 21 yes Figure 20 A magnified view of a section at point B.

[0053] Figure 22 This is a schematic diagram of the locking component of the back massager according to Embodiment 3 of the present invention.

[0054] Figure 23 This is a schematic diagram of the pre-positioning component of the back massager according to Embodiment 3 of the present invention.

[0055] Figure 24 This is a schematic diagram of the locking component of the back massager according to Embodiment 3 of the present invention.

[0056] Figure 25 This is a schematic diagram of the locking component of the back massager according to Embodiment 3 of the present invention.

[0057] Figure 26 This is a schematic diagram of the first frame of the back massager according to Embodiment 3 of the present invention.

[0058] Figure 27 This is a schematic diagram of the second frame of the back massager according to Embodiment 3 of the present invention.

[0059] Figure 28 This is a schematic diagram of the overall cross-section of the back massager of Embodiment 1 of the present invention.

[0060] Figure 29 yes Figure 28 A magnified view of a section at point C.

[0061] Figure label:

[0062] 1. Massager body; 2. First support; 3. Second support; 4. Locking assembly; 5. Pre-positioning assembly; 41. Locking element; 42. Locking element; 51. Positioning element; 52. Positioning part; 11. First groove; 12. Second groove; 32. Second frame; 33. Second decorative panel; 24. First frame; 25. First decorative panel;

[0063] Axial type: 6. Rotating shaft; 43. First elastic element; 21. Slide groove; 22. Baffle; 23. Inclined groove; 26. Top cover; 27. First hinge seat; 31. Second hinge seat; 261. Cylindrical part; 262. Plate-shaped part; 263. Limiting plate; 271. Mounting groove; 411. Locking gear; 421. Push plate; 422. Driving element; 521. Positioning groove; 2611. Notch; 2631. Second tooth; 4211. First tooth; 4212. Strip hole; 4213. Inclined hole; 4221. Button; 4222. Inclined shovel; 4223. Second elastic element; 42221. Vertical section; 42222. Inclined section;

[0064] Press-type: 6′, pivot; 27′, first hinge seat; 31′, second hinge seat; 44, first baffle; 45, elastic element; 53, second baffle; 27′1, first mounting groove; 27′2, third mounting groove; 31′1, second mounting groove; 31′2, fourth mounting groove; 441, guide hole; 412, pressing part; 413, locking rod; 423, stop tooth; 4131, protruding tooth; 522, positioning plate; 5221, positioning groove;

[0065] Push rod type: 6″, pivot; 27″, first hinge seat; 31″, second hinge seat; 46, mounting seat; 45′, elastic element; 461, sliding cavity; 414, toggle button; 415, connecting rod; 416, push rod; 28, through hole; 4161, protruding tooth; 423′, stop tooth; 522′, positioning plate; 522′1, positioning groove; 54, baffle; 31″1, first mounting groove; 27″1, second mounting groove; 541, mounting post; 5411, third mounting groove. Detailed Implementation

[0066] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0067] like Figure 1-2 , Figure 10 , Figure 20 As shown, the back massager of this embodiment includes a massager body 1, a locking component 4, a first support 2, and a second support 3. The massager body 1 is made of flexible memory foam or other flexible material, and its surface is curved. The curved surface is designed according to the human body shape to achieve a better fit with the human body, meet ergonomic requirements, and provide good comfort. The first support 2 and the second support 3 are both mounted on the massager body 1 and are connected to the massager body 1 by strong adhesive or bolts, providing support for the massager body 1. The first support 2 and the second support 3 are hinged, allowing the massager body 1 to rotate between a flat position and at least one bent position, meeting the massage and functional needs of the human body in different postures.

[0068] like Figure 10 , Figure 20 As shown, the locking component 4 is used to lock the massager body 1 in a flat position or any bent position. The locking component 4 has a simple overall structure, is easy to operate, and provides reliable locking.

[0069] The back massager of this invention adjusts the angle of the first support 2 and the second support 3 through the locking component 4, thereby realizing the flattening and bending of the massager body 1 at different angles. In the flattened state, it can be used for back massage, and in the bent state, it can be used as a nap pillow, satisfying the massage comfort of the human body in different postures. The overall structure is simple and has high functionality and reliability.

[0070] like Figure 6 , Figure 10 , Figure 20 As shown, in some embodiments, the locking assembly 4 includes a locking member 41 and a locking member 42. The locking member 41 is movably disposed on one of the first bracket 2 and the second bracket 3, and the locking member 42 is mounted on the other of the first bracket 2 and the second bracket 3. The locking member 41 can cooperate with the locking member 42 to lock the instrument body in a flat position or any bent position, and has high locking reliability and service life.

[0071] like Figure 13 , Figure 23 As shown, in some embodiments, the back massager further includes a pre-positioning component 5. The pre-positioning component 5 is used to determine the position angle between the first support 2 and the second support 3. It only achieves pre-positioning and does not have a locking function. After pre-positioning, it can further ensure that the locking component 4 is fully engaged. The pre-positioning component 5 includes a positioning member 51 and a positioning part 52. The positioning member 51 is movably disposed on one of the first support 2 and the second support 3, and the positioning part 52 is disposed on the other of the first support 2 and the second support 3, or the positioning part 52 is disposed on the locking member 42. The positioning member 51 can cooperate with the positioning part 52 to pre-position the massager body 1 in a flat position or any bent position to meet the usage needs of different human body postures.

[0072] The following describes different embodiments of the back massager of the present invention with reference to the accompanying drawings.

[0073] Example 1: Axial Back Massager

[0074] like Figure 1 , Figure 6-7 , Figures 28-29 As shown, in some embodiments, the locking member 41 is a locking gear 411. The first bracket 2 and the second bracket 3 are hinged together by a rotating shaft 6. The locking gear 411 is connected to the rotating shaft 6 and can rotate with the rotating shaft 6. The cross-section of the rotating shaft 6 can be rectangular, polygonal, or D-shaped. The cross-section of the inner hole of the locking gear 411 is similar to that of the rotating shaft 6. When they cooperate, they can transmit a large torque and have high reliability. The locking member 42 includes a push plate 421 and a driving member 422. The push plate 421 is slidably disposed on the first bracket 2 and / or the second bracket 3. The driving member 422 is connected to the push plate 421 and can drive the push plate 421 to slide. The overall structure is compact.

[0075] like Figure 4 , Figure 6-7 As shown, in some embodiments, the first bracket 2 is provided with a groove 21 extending radially along the locking gear 411. The push plate 421 is clearance-fitted with the groove 21 and can move within the groove 21. The push plate 421 is slidably disposed within the groove 21. The first end of the push plate 421 is connected to the driving member 422, and the second end of the push plate 421 is provided with a first tooth 4211 that can mesh with the locking gear 411. When the push plate 421 moves towards the locking gear 411 under the action of the driving member 422, the first tooth 4211 meshes with the locking gear 411, thereby locking. When the push plate 421 moves away from the locking gear 411, the first tooth 4211 disengages from the locking gear 411, and the locking gear 411 can rotate under the action of external force.

[0076] like Figure 6-8 As shown, the locking assembly 4 also includes a first elastic element 43, which is a spring. A strip-shaped hole 4212 extending along the length of the push plate 421 is provided. A baffle 22 is provided on the first bracket 2 and is located within the strip-shaped hole 4212. The first elastic element 43 is disposed within the strip-shaped hole 4212 and is located on the side of the baffle 22 adjacent to the locking gear 411. One end of the first elastic element 43 abuts against the baffle 22, and the second end abuts against the wall of the strip-shaped hole 4212. When the first elastic element 43 is in a compressed state, the push plate 421 locks the locking gear 411. When the first elastic element 43 is in a relaxed state, the push plate 421 releases the locking gear 411, allowing the locking gear 411 to rotate.

[0077] It should be noted that the hole wall of the strip hole 4212 and the contact surface between the baffle 22 and the first elastic element 43 can be provided with protrusions for positioning the first elastic element 43. With this setting, the push plate 421 is subjected to more uniform force and moves more smoothly in the slide groove 21, which can effectively reduce wear.

[0078] like Figure 6-7As shown, the driving component 422 includes a button 4221, a shovel 4222, and a second elastic component 4223. The first bracket 2 is provided with a sloping groove 23 communicating with the slide groove 21. The push plate 421 is provided with a sloping hole 4213 communicating with the sloping groove 23. The shovel 4222 includes a vertical section 42221 and an inclined section 42222. The button 4221 passes through the first bracket 2 and is connected to one end of the vertical section 42221. The other end of the vertical section 42221 is connected to the inclined section 42222. The inclined segment 42222 is connected, and the inclined segment 42222 passes through the inclined hole 4213 and is slidably fitted in the inclined groove 23. When the back massager needs to be adjusted, the button 4221 is pressed, which applies a downward force to the inclined shovel 4222. Under the action of the inclined groove 23 and the inclined hole 4213, the inclined shovel 4222 releases the pressure on the push plate 421. Under the action of the first elastic element 43, the push plate 421 disengages from the locking gear 411, allowing the locking gear 411 to rotate. The second elastic element 4223 is a spring, with one end abutting against the button 4221 and the other end abutting against the first bracket 2. Guide posts can be set on the first bracket 2 and the button 4221. The spring is sleeved on the guide post or set in the hole of the guide post. The spring is not easy to deform or fall off when compressed, and has a longer service life.

[0079] Furthermore, when button 4221 is pressed and then released, the second elastic element 4223 drives button 4221 and slanted shovel 4222 to move upward. Under the action of the slanted surface of slanted shovel 4222, push plate 421 moves towards locking gear 411, locking the locking gear 411 and fixing the back massager at a specific angle.

[0080] like Figure 1 , Figure 3 As shown, in some embodiments, the first support 2 includes a first frame 24, a first decorative panel 25, and a top cover 26. The first frame 24 supports the massager body 1. The top cover 26 and the first decorative panel 25 are connected to the first frame 24 by snap-fit ​​connections, which facilitate installation and disassembly. The top cover 26 is located on a slide groove 21 and is connected to the first frame 24 by snap-fit ​​connections or bolts. Both the top cover 26 and the first decorative panel 25 are detachably mounted on the first frame 24. The top cover 26 is located on the slide groove 21, and the first decorative panel 25 covers the top cover 26. The surface of the first decorative panel 25 can be decorated with shapes and patterns, making the back massager more aesthetically pleasing.

[0081] like Figure 3 , Figure 6-7As shown, the top cover 26 includes a connected cylindrical component 261, a plate-shaped component 262, and a limiting plate 263. The cylindrical component 261 is a hollow semi-circular shape and is fitted onto the outside of the locking gear 411, providing shielding and protection for the locking gear 411. The plate-shaped component 262 covers the sliding groove 21, providing shielding and protection for the first elastic component 43 and the push plate 421. The plate-shaped component 262 is detachably connected to the first frame 24, facilitating later maintenance and cleaning. A notch 2611 is provided on the cylindrical component 261, and the limiting plate 263 is located within the notch 2611 with one end connected to the cylindrical component 261. The notch 2611 not only facilitates the flexible bending of the limiting plate 263 but also allows the limiting plate 263 to be disengaged from the locking gear 411 by a finger. The inner surface of the limiting plate 263 is provided with a second tooth 2631 that can mesh with the locking gear 411. The limiting plate 263 can be tilted upward under the action of external force, and the second tooth 2631 disengages from the locking gear 411, allowing the locking gear 411 to rotate. When the limiting plate 263 is released, the second tooth 2631 meshes with the locking gear 411 under its own elastic force, achieving locking. The limiting plate 263 and the push plate 421 work together on the locking gear 411, which can realize bidirectional locking of the adjustable angle of the back massager, and has high reliability in use.

[0082] like Figure 6 As shown, in some embodiments, the positioning part 52 consists of multiple positioning grooves 521 disposed on the end face of the locking gear 411. The positioning grooves 521 are spherical grooves, and the multiple positioning grooves 521 are arranged at intervals along the circumference of the locking gear 411. The positioning member 51 cooperates with the positioning grooves 521 to pre-position the massager body 1, thereby ensuring that the locking gear 411 is fully engaged, avoiding misalignment that could lead to inaccurate angle positioning, or even slippage that could damage the locking gear 411.

[0083] like Figure 4-7 As shown, the positioning component 51 is a ball screw. The first bracket 2 has a first hinge seat 27, and the second bracket 3 has a second hinge seat 31. The rotating shaft 6 passes through the locking gear 411, the first hinge seat 27, and the second hinge seat 31. An external hexagonal nut is provided on the end face of the rotating shaft 6, which fits into the shape of the second hinge seat 31. When the locking gear 411 rotates under external force, the rotating shaft 6 and the second hinge seat 31 rotate together with the locking gear 411. The first hinge seat 27 and / or the second hinge seat 31 are provided with mounting grooves 271. The ball screw is installed in the mounting groove 271, and the end of the ball screw can cooperate with the positioning groove 521 to pre-position the massager body 1 in a flat position or any bent position.

[0084] like Figure 1-2 , Figure 4-5 , Figure 28As shown, in some embodiments, the back massager also includes a cover (not shown). The massager body 1 is provided with a first groove 11 and a second groove 12. The first support 2 includes a first frame 24 and a first decorative panel 25. The second support 3 includes a second frame 32 and a second decorative panel 33. The first frame 24 is embedded in the first groove 11, and the groove connection can effectively and completely fix the first frame 24 and the second frame 32, avoiding misalignment after long-term use. The second frame 32 is embedded in the second groove 12. The cover is placed over the massager body 1, the first frame 24, and the second frame 32. The first decorative panel 25 is pressed onto the cover and detachably connected to the first frame 24. The second decorative panel 33 is pressed onto the cover and detachably connected to the second frame 32. As an exposed part, the cover is removable for easy cleaning after the back massager has been used for a period of time.

[0085] Example 2: Press-type back massager

[0086] like Figure 9-10 , Figure 14-15 As shown, in some embodiments, the first bracket 2 and the second bracket 3 are hinged together by a pivot 6′. The first bracket 2 has a first hinge seat 27′, and the second bracket 3 has a second hinge seat 31′. The first hinge seat 27′ and the second hinge seat 31′ are integrally formed with the first bracket 2 and the second bracket 3, respectively, and are manufactured by injection molding. The integral structure has high connection strength, which can significantly increase service life and reliability. The pivot 6′ passes through the first hinge seat 27′ and the second hinge seat 31′, and is fixed to one of them by an external hexagonal nut at one end of the pivot 6′. A locking member 41 is installed on the first hinge seat 27′, and a locking member 42 is installed on the second hinge seat 31′. The locking member 41 passes through the first hinge seat 27′ to cooperate with the locking member 42, so as to achieve locking of the first bracket 2 and the second bracket 3 at different angles.

[0087] like Figure 10-12 As shown, in some embodiments, the locking assembly 4 further includes a first baffle 44. A first mounting groove 27′1 is provided on the first hinge seat 27′. The first baffle 44 is installed within the first mounting groove 27′1. The inner contour of the first mounting groove 27′1 matches the outer contour of the first baffle 44. The first baffle 44 is installed within the first mounting groove 27′1 with a clearance fit and is positioned by its outer contour. A guide hole 441 is provided on the first baffle 44. The locking member 41 includes a pressing part 412 and a locking rod 413. The pressing part 412 is slidably installed within the guide hole 441. The shape of the guide hole 441 matches the cross-sectional shape of the pressing part 412. The cross-sectional shape of the pressing part 412 is semi-circular, rectangular, or polygonal. This specific cross-sectional shape prevents rotation of the pressing part 412 during movement, retaining a single degree of freedom. Further, as... Figure 17-18As shown, a skirt is provided at the guide hole 441 to guide the movement and improve the accuracy and stability of the pressing part 412. One end of the locking rod 413 is connected to the pressing part 412. The locking member 42 has multiple stop teeth 423. The other end of the locking rod 413 is provided with a protruding tooth 4131 that can mesh with the stop teeth 423. The locking rod 413 passes through the first hinge seat 27'. The first hinge seat 27' is provided with a square hole that mates with the locking rod 413 to ensure that the movement of the locking rod 413 will not deviate.

[0088] It should be noted that, as Figure 17 As shown, the pressing part 412, the locking rod 413 and the protruding tooth 4131 are an integral structure, which is produced by injection molding. The integral structure not only saves assembly steps, but also has higher overall structural strength and more accurate relative positional relationship, which can significantly improve the smoothness and stability of the locking action.

[0089] like Figure 12 As shown, the locking assembly 4 also includes an elastic element 45, which can be a spring or other elastic component. The elastic element 45 passes through the guide hole 441, with one end abutting against the pressing part 412 and the other end abutting against the first hinge seat 27'. When the pressing part 412 is not subjected to external force, the elastic element 45 resets the pressing part 412. A protrusion is provided at the contact position between the pressing part 412 and the first hinge seat 27' and the elastic element 45. The protrusion is concentric with the elastic element 45 and is used to fix the elastic element 45, preventing misalignment of the elastic element 45 when compressed.

[0090] like Figure 11-12 , Figure 16 As shown, a second mounting groove 31′1 is provided on the second hinge seat 31′. The locking member 42 is installed in the second mounting groove 31′1. The inner contour of the second mounting groove 31′1 is consistent with the outer contour of the locking member 42. The locking member 42 is installed in the second mounting groove 31′1 with a clearance fit and is positioned by its outer contour. A stop tooth 423 is provided on the inner peripheral wall of the locking member 42. Multiple stop teeth 423 are arranged at intervals along the circumferential direction of the rotating shaft 6′. The stop teeth 423 are located at the end of the locking member 42 near the opening of the second mounting groove 31′1. The stop teeth 423 and the locking member 42 are an integral structure, which helps to improve the connection strength between the stop teeth 423 and the locking member 42.

[0091] It should be noted that the circumferential spacing density of the multiple stop teeth 423 along the rotation axis 6′ is related to the minimum adjustment angle of the back massager. The higher the density, the more adjustable angles are available; the lower the density, the fewer adjustable angles are available. The angle between any two adjacent teeth determines the minimum adjustment angle.

[0092] like Figure 11 , Figure 13As shown, in some embodiments, the positioning part 52 is a positioning disk 522, which is mounted on the second hinge seat 31'. The positioning disk 522 has multiple positioning grooves 5221, which are evenly arranged along the circumference of the positioning disk 522. The angle between any two adjacent positioning grooves 5221 is the same as the angle between any two adjacent stop teeth 423. The positioning member 51 is movably mounted on the first hinge seat 27' along the axial direction of the rotating shaft 6'. The end of the positioning member 51 can cooperate with the positioning groove 5221 to pre-position the massager body 1 in a flat position or any bent position, meeting the usage needs of different human postures.

[0093] like Figure 11 , Figure 13 As shown, the pre-positioning assembly 5 also includes a second baffle 53, a positioning member 51 mounted on the second baffle 53, two first hinge seats 27′ ​​arranged axially at intervals along the rotating shaft 6′, and a second hinge seat 31′ located between the two first hinge seats 27′, with a clearance fit with the two first hinge seats 27′, allowing it to rotate relative to the first hinge seats 27′. A locking member 41 and a positioning member 51 are respectively disposed on the two first hinge seats 27′. A third mounting groove 27′2 is provided on the first hinge seat 27′, and the second baffle 53 is installed within the third mounting groove 27′2. A fourth mounting groove 31′2 is provided on the second hinge seat 31′, and a positioning disc 522 is installed within the fourth mounting groove 31′2. The positioning member 51 penetrates the first hinge seat 27′ to cooperate with the positioning disc 522. The second baffle 53 and the positioning plate 522 are respectively engaged with the third mounting slot 27′2 and the fourth mounting slot 31′2, and are fixedly connected by buckles or bolts. The surface is free of protrusions and obvious gaps, resulting in a more compact and aesthetically pleasing appearance, while also providing better protection and dust prevention for the internal components. When adjusting the angle of the back massager, press the pressing part 412 to unlock it, gently twist the first bracket 2 and the second bracket 3 to adjust to the appropriate angle. The positioning part 51 and the positioning plate 522 cooperate to pre-position the first bracket 2 and the second bracket 3 at a certain angle. Release the pressing part 412 to adjust the angle of the back massager to meet the needs of different postures.

[0094] like Figure 2 , Figure 9 , Figure 14-15As shown, in some embodiments, the back massager also includes a cover. The massager body 1 is provided with a first groove 11 and a second groove 12. The first support 2 includes a first frame 24 and a first decorative panel 25. The second support 3 includes a second frame 32 and a second decorative panel 33. The first frame 24 is embedded in the first groove 11, and the groove connection can effectively and completely fix the first frame 24 and the second frame 32, avoiding misalignment after long-term use. The second frame 32 is embedded in the second groove 12. The cover is placed over the massager body 1, the first frame 24, and the second frame 32. The first decorative panel 25 is pressed onto the cover and detachably connected to the first frame 24. The second decorative panel 33 is pressed onto the cover and detachably connected to the second frame 32. As an exposed part, the cover is removable for easy cleaning after the back massager has been used for a period of time.

[0095] Example 3: Push Rod Type Back Massager

[0096] like Figures 19-20 As shown, in some embodiments, the first bracket 2 and the second bracket 3 are hinged together by a pivot 6″. The first bracket 2 has a first hinge seat 27″, and the second bracket 3 has a second hinge seat 31″. The first hinge seat 27″ and the second hinge seat 31″ are integrally formed with the first bracket 2 and the second bracket 3, respectively, and are manufactured by injection molding. The integral structure has high connection strength, which can significantly increase service life and reliability. The pivot 6″ passes through the first hinge seat 27″ and the second hinge seat 31″, and is fixed to one of them by an external hexagonal nut at one end of the pivot 6″. A locking member 41 is installed on the first hinge seat 27″, and a locking member 42 is installed on the second hinge seat 31″. The locking member 41 passes through the first hinge seat 27″ to cooperate with the locking member 42, so as to achieve locking of the first bracket 2 and the second bracket 3 at different angles.

[0097] like Figure 21-22 , Figure 26 As shown, in some embodiments, the locking assembly 4 further includes a mounting base 46. The first hinge seat 27″ is hollow inside, and the mounting base 46 is detachably mounted on the first hinge seat 27″. The mounting base 46 and the first hinge seat 27″ define a sliding cavity 461, and at least a portion of the locking member 41 is slidably disposed within the sliding cavity 461. It should be noted that the mounting base 46 serves to fix the internal components and isolate the internal components from the outside environment, thus preventing dust, stains, etc. from affecting the internal structure.

[0098] like Figure 20-22 , Figure 24-25 , Figure 26As shown, the locking member 41 includes a knob 414, a connecting rod 415, and a push rod 416. The push rod 416 is disposed in the sliding cavity 461. The first bracket 2 is provided with a through hole 28 communicating with the sliding cavity 461. The connecting rod 415 is slidably disposed in the through hole 28 along the axial direction of the rotating shaft 6″. The shape of the through hole 28 is consistent with the cross-section of the connecting rod 415, both being rectangular or polygonal. The polygonal structure can maintain the connecting rod 415 with a single degree of freedom, preventing its rotation and ensuring reliable and stable movement. The first end of the connecting rod 415 is connected to the knob 414, and the second end of the connecting rod 415 is connected to the first end of the push rod 416. The second end of the push rod 416 is provided with a protruding tooth 4161 extending along the axial direction of the rotating shaft 6″. The locking member 42 has multiple stop teeth 423′. The protruding tooth 4161 penetrates the first hinge seat 27″ and the second hinge seat 31″ to engage with the stop teeth 423′, thereby achieving locking.

[0099] Furthermore, such as Figure 24 As shown, the connecting rod 415, push rod 416 and tooth 4161 are an integral structure, which is manufactured by injection molding. The integral structure not only saves assembly steps, but also has higher overall structural strength and more accurate relative positional relationship, which can significantly improve the smoothness and stability of locking action.

[0100] like Figure 21-22 As shown, the locking assembly 4 also includes an elastic element 45', which can be a spring or other elastic component. The elastic element 45' is disposed within the sliding cavity 461 and located on the side of the push rod 416 away from the locking component 42. One end of the elastic element 45' abuts against the push rod 416, and the other end abuts against the inner wall of the first hinge seat 27″. When the push rod 416 is not subjected to external force, the elastic element 45' resets the push rod 416. A protrusion is provided at the contact position between the push rod 416 and the first hinge seat 27″ and the elastic element 45'. The protrusion is concentric with the elastic element 45' and is used to fix the elastic element 45'. The protrusion prevents misalignment of the elastic element 45' when compressed.

[0101] like Figure 21-22 , Figure 27 As shown, there are two second hinge seats 31″, which are arranged at intervals along the axial direction of the rotating shaft 6″. The first hinge seat 27″ is located between the two second hinge seats 31″ and is clearance-fitted with the two second hinge seats 31″, allowing it to rotate relative to the second hinge seats 31″. The locking member 42 is installed on one of the second hinge seats 31″, and the stop teeth 423′ are provided on the inner peripheral wall of the locking member 42. Multiple stop teeth 423′ are arranged at intervals along the circumferential direction of the rotating shaft 6″. The stop teeth 423′ and the locking member 42 are an integral structure, which helps to improve the connection strength between the stop teeth 423′ and the locking member 42.

[0102] like Figure 21 , Figure 23As shown, in some embodiments, the positioning part 52 is a positioning disk 522', which is mounted on the first hinge seat 27″. The positioning disk 522' is provided with a plurality of positioning grooves 522'1, which are evenly arranged along the circumference of the positioning disk 522'. The angle between any two adjacent positioning grooves 522'1 is the same as the angle between any two adjacent stop teeth 423', thereby ensuring that the protrusion tooth 4161 can fully engage with the stop tooth 423' at the predetermined positioning position. The positioning member 51 is movably mounted on the second hinge seat 31″ along the axial direction of the rotating shaft 6″. The positioning member 51 and the locking member 42 are respectively provided on the two second hinge seats 31″. The end of the positioning member 51 can cooperate with the positioning groove 522'1 to pre-position the massager body 1 in a flat position or any bent position.

[0103] It should be noted that when the angle of the back massager needs to be adjusted, the dial 414 is turned to unlock, and the relative positions of the first bracket 2 and the second bracket 3 are gently rotated to adjust to a suitable angle. The positioning component 51 and the positioning plate 522' cooperate to pre-position the first bracket 2 and the second bracket 3 at a certain angle. The dial 414 is then released to adjust the angle of the back massager to meet the usage needs of different postures.

[0104] like Figure 21 , Figure 23 As shown, the pre-positioning component 5 also includes a baffle 54, a positioning element 51 mounted on the baffle 54, a first mounting groove 31″1 provided on the second hinge seat 31″, the baffle 54 installed in the first mounting groove 31″1, a second mounting groove 27″1 provided on the first hinge seat 27″, and a positioning disk 522′ installed in the second mounting groove 27″1. The positioning element 51 passes through the second hinge seat 31″ to cooperate with the positioning disk 522′. The baffle 54 and the positioning disk 522′ are respectively fastened to the first mounting groove 31″1 and the second mounting groove 27″1, and are fixedly connected by snaps or bolts. The surface has no protrusions or obvious gaps, the appearance is more compact and beautiful, and it can also play a better role in protecting and dustproofing the internal components.

[0105] like Figure 21 , Figure 23 As shown, the positioning component 51 is a ball screw, and the baffle 54 is provided with a mounting post 541 extending axially along the rotating shaft 6″. The mounting post 541 passes through the second hinge seat 31″, and a third mounting groove 5411 is provided at one end of the mounting post 541 adjacent to the second hinge seat 31″. The ball screw is located in the third mounting groove 5411.

[0106] like Figure 2 , Figure 19 , Figure 26-27As shown, in some embodiments, the back massager also includes a cover. The massager body 1 is provided with a first groove 11 and a second groove 12. The first support 2 includes a first frame 24 and a first decorative panel 25. The second support 3 includes a second frame 32 and a second decorative panel 33. The first frame 24 is embedded in the first groove 11, and the second frame 32 is embedded in the second groove 12. The groove connection can effectively and completely fix the first frame 24 and the second frame 32, preventing misalignment during long-term use. The cover is placed over the massager body 1, the first frame 24, and the second frame 32. The first decorative panel 25 is pressed onto the cover and detachably connected to the first frame 24, and the second decorative panel 33 is pressed onto the cover and detachably connected to the second frame 32. As an exposed part, the cover's detachable structure facilitates cleaning after the back massager has been used for a period of time.

[0107] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0108] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, 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.

[0109] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0110] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0111] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0112] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A back massager, characterized in that, include: The massager itself; A first support and a second support are both mounted on the massager body. The first support and the second support are hinged together. The first support and the second support can drive the massager body to rotate between a flat position and at least one bent position. A locking assembly is used to lock the massager body in the flattened position or any of the bent positions. The locking assembly includes a locking member and a locking member. The locking member is movably disposed on one of the first bracket and the second bracket, and the locking member is installed on the other of the first bracket and the second bracket. The locking member can cooperate with the locking member to lock the massager body in the flattened position or any of the bent positions. A pre-positioning component, comprising a positioning member and a positioning part, wherein the positioning member is movably disposed on one of the first support and the second support, and the positioning part is disposed on the other of the first support and the second support, or the positioning part is disposed on the locking member, wherein the positioning member can cooperate with the positioning part to pre-position the massager body in the flattened position or any of the bent positions.

2. The back massager of claim 1, wherein, The locking element is a locking gear. The first bracket and the second bracket are hinged by a rotating shaft. The locking gear is connected to the rotating shaft and can rotate with the rotating shaft. The locking element includes a push plate and a driving element. The push plate is slidably disposed on the first bracket and / or the second bracket. The driving element is connected to the push plate and can drive the push plate to slide.

3. The back massager of claim 2, wherein, The first bracket is provided with a sliding groove extending radially along the locking gear, the push plate is slidably disposed in the sliding groove, the first end of the push plate is connected to the driving member, and the second end of the push plate is provided with a first tooth that can mesh with the locking gear; The locking assembly further includes a first elastic element. The push plate is provided with a strip-shaped hole extending along its length direction. The first bracket is provided with a baffle and the baffle is located in the strip-shaped hole. The first elastic element is provided in the strip-shaped hole and is located on the side of the baffle adjacent to the locking gear. One end of the first elastic element abuts against the baffle, and the second end of the first elastic element abuts against the hole wall of the strip-shaped hole. The driving component includes a button, a slanted shovel, and a second elastic element. The first bracket is provided with a slanted groove communicating with the slide groove. The push plate is provided with a slanted hole communicating with the slanted groove. The slanted shovel includes a vertical section and an inclined section. The button passes through the first bracket and is connected to one end of the vertical section. The other end of the vertical section is connected to the inclined section. The inclined section passes through the slanted hole and is slidably fitted in the slanted groove. One end of the second elastic element abuts against the button, and the other end of the second elastic element abuts against the first bracket.

4. The back massager of claim 3, wherein, The first bracket includes a first frame, a first decorative panel, and a top cover. The top cover and the first decorative panel are detachably mounted on the first frame. The top cover is disposed on the slide groove, and the first decorative panel is disposed on the top cover. The top cover includes a connected cylindrical component, a plate-shaped component, and a limiting plate. The cylindrical component is sleeved on the outside of the locking gear, and the plate-shaped component covers the sliding groove. The plate-shaped component is detachably connected to the first frame. The cylindrical component has a notch, and the limiting plate is located inside the notch with one end connected to the cylindrical component. The inner surface of the limiting plate has a second tooth that can mesh with the locking gear.

5. The back massager of claim 2, wherein, The positioning part consists of multiple positioning grooves provided on the end face of the locking gear, and the multiple positioning grooves are arranged at intervals along the circumference of the locking gear. The positioning component is a ball screw. The first bracket has a first hinge seat, and the second bracket has a second hinge seat. The rotating shaft passes through the locking gear, the first hinge seat, and the second hinge seat. The first hinge seat and / or the second hinge seat are provided with mounting grooves. The ball screw is installed in the mounting groove. The end of the ball screw can cooperate with the positioning groove to pre-position the massager body in the flat position or any of the bending positions.

6. The back massager of claim 1, wherein, The first bracket and the second bracket are hinged by a pivot. The first bracket has a first hinge seat, and the second bracket has a second hinge seat. The pivot passes through the first hinge seat and the second hinge seat and is fixed relative to one of them. The locking member is installed on the first hinge seat, and the locking member is installed on the second hinge seat. The locking member passes through the first hinge seat to cooperate with the locking member.

7. The back massager of claim 6, wherein, The locking assembly further includes a first baffle, a first mounting groove is provided on the first hinge seat, the first baffle is installed in the first mounting groove, a guide hole is provided on the first baffle, the locking member includes a pressing part and a locking rod, the pressing part is slidably installed in the guide hole, one end of the locking rod is connected to the pressing part, the locking member has multiple stop teeth, the other end of the locking rod is provided with a protruding tooth that can mesh with the stop teeth, and the locking rod passes through the first hinge seat; The locking assembly further includes an elastic element that passes through the guide hole, one end of the elastic element abuts against the pressing part, and the other end of the elastic element abuts against the first hinge seat; The second hinge seat is provided with a second mounting groove, the locking member is installed in the second mounting groove, the stop teeth are provided on the inner peripheral wall of the locking member, and a plurality of the stop teeth are arranged at intervals along the circumference of the rotating shaft, and the stop teeth are located at one end of the locking member near the opening of the second mounting groove.

8. The back massager of claim 6, wherein, The positioning part is a positioning plate, which is mounted on the second hinge seat. The positioning plate is provided with a plurality of positioning grooves, which are arranged at intervals along the circumference of the rotating shaft. The positioning member is movably mounted on the first hinge seat along the axial direction of the rotating shaft. The end of the positioning member can cooperate with the positioning groove to preposition the massager body in the flat position or any of the bending positions. The pre-positioning component further includes a second baffle, the positioning member is mounted on the second baffle, there are two first hinge seats, the two first hinge seats are arranged axially spaced along the rotating shaft, the second hinge seat is located between the two first hinge seats, the locking member and the positioning member are respectively disposed on the two first hinge seats, the first hinge seat is provided with a third mounting groove, the second baffle is installed in the third mounting groove, the second hinge seat is provided with a fourth mounting groove, the positioning plate is installed in the fourth mounting groove, and the positioning member passes through the first hinge seat to cooperate with the positioning plate.

9. The back massager of claim 1, wherein, The first bracket and the second bracket are hinged by a pivot. The first bracket has a first hinge seat, and the second bracket has a second hinge seat. The pivot passes through the first hinge seat and the second hinge seat and is fixed relative to one of them. The locking member is installed on the first hinge seat, and the locking member is installed on the second hinge seat. The locking member passes through the first hinge seat to cooperate with the locking member.

10. The back massager of claim 9, wherein, The locking assembly further includes a mounting base, the first hinge base is hollow inside, the mounting base is detachably mounted on the first hinge base, the mounting base and the first hinge base define a sliding cavity, and at least a portion of the locking member is slidably disposed within the sliding cavity; The locking component includes a knob, a connecting rod, and a push rod. The push rod is disposed in the sliding cavity. The first bracket has a through hole communicating with the sliding cavity. The connecting rod is slidably disposed in the through hole along the axial direction of the rotating shaft. The first end of the connecting rod is connected to the knob, and the second end of the connecting rod is connected to the first end of the push rod. The second end of the push rod has a protruding tooth extending along the axial direction of the rotating shaft. The locking component has multiple stop teeth. The protruding tooth penetrates the first hinge seat and the second hinge seat to engage with the stop teeth. The locking assembly further includes an elastic element, which is disposed in the sliding cavity and located on the side of the push rod away from the locking member. One end of the elastic element abuts against the push rod, and the other end of the elastic element abuts against the inner wall of the first hinge seat. There are two second hinge seats, which are arranged axially spaced along the rotating shaft. The first hinge seat is located between the two second hinge seats. The locking member is installed on one of the second hinge seats. The stop teeth are arranged on the inner peripheral wall of the locking member. A plurality of the stop teeth are arranged circumferentially spaced along the rotating shaft.

11. The back massager of claim 9, wherein, The positioning part is a positioning plate, which is installed on the first hinge seat. The positioning plate is provided with a plurality of positioning grooves. The positioning member is movably installed on the second hinge seat along the axial direction of the rotating shaft. The positioning member and the locking member are respectively provided on two second hinge seats. The end of the positioning member can cooperate with the positioning groove to preposition the massager body in the flat position or any of the bending positions. The pre-positioning component further includes a baffle, the positioning element is mounted on the baffle, the second hinge seat is provided with a first mounting groove, the baffle is installed in the first mounting groove, the first hinge seat is provided with a second mounting groove, the positioning disk is installed in the second mounting groove, and the positioning element passes through the second hinge seat to cooperate with the positioning disk; The positioning component is a ball screw. The baffle is provided with a mounting post extending axially along the rotating shaft. The mounting post passes through the second hinge seat. A third mounting groove is provided at one end of the mounting post adjacent to the second hinge seat. The ball screw is disposed in the third mounting groove.

12. The back massager of any of claims 1-11, wherein, It also includes an outer cover. The massager body is provided with a first groove and a second groove. The first support includes a first frame and a first decorative panel. The second support includes a second frame and a second decorative panel. The first frame is embedded in the first groove, and the second frame is embedded in the second groove. The outer cover is placed over the massager body, the first frame, and the second frame. The first decorative panel is pressed onto the outer cover and is detachably connected to the first frame. The second decorative panel is pressed onto the outer cover and is detachably connected to the second frame.

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