A hand massager based on air bag massage

Abstract

The application relates to a hand massage instrument based on air bag massage, which comprises a supporting plate and five massage cylinders arranged on the supporting plate; an inner layer body is coaxially fixed to the inner wall of each massage cylinder; a plurality of slide grooves extending along the axial direction of the massage cylinder are annularly arranged on the inner wall of each inner layer body; a rectangular shell is slidingly installed in each slide groove; a plurality of air bag bodies are arranged on the side surface of each rectangular shell facing the axis of the massage cylinder; a driving mechanism is arranged on each massage cylinder and used for driving the rectangular shells in the same massage cylinder to simultaneously reciprocate along the axial direction of the massage cylinder; and a gas charging and discharging module is arranged on the side of the supporting plate and used for charging and discharging the air bag bodies. The massage cylinder provided with the driving mechanism can realize continuous and accurate linear movement adjustment of the rectangular shell and the air bag bodies on the rectangular shell along the axial direction of the massage cylinder, so that accurate position adjustment under different massage requirements can be realized without manual disassembly.

Description

Technical Field

[0001] This invention relates to the field of massage equipment technology, specifically to a hand massager based on airbag massage. Background Technology

[0002] Airbag-type hand massagers have become one of the mainstream product types on the market due to their gentle massage intensity, large operating area, and comfortable feel. Traditional airbag-type hand massagers generally use a fixed installation structure for their airbag components. This means that each airbag unit is pre-fixed in a predetermined position on the massager housing. During massage, each airbag unit can only exert a reciprocating pressing action on the hand area corresponding to its fixed installation position, and cannot move or adjust its position, lacking flexibility and adaptability.

[0003] Existing technologies also include some massagers with adjustable airbag positions. These products typically employ an integrated, detachable design, making the massage airbags removable. Users can remove the airbags from their original installation positions and reinstall them at other preset locations to massage different areas of the hand. However, in actual use, this detachable structure requires users to manually disassemble and reinstall the airbags, which is cumbersome. Furthermore, the airbag installation positions are limited to a limited number of preset locations, preventing continuous movement or precise adjustment on specific hand positions. Additionally, adjusting the position usually requires turning off the massager and removing the hand from the device before disassembly and reinstallation can be completed, resulting in low convenience. Summary of the Invention

[0004] Based on this, this application provides a hand massager based on airbag massage, which can precisely adjust the massage position during use, effectively solving the problem of fixed or inconvenient adjustment of the massage area in traditional hand massagers.

[0005] This application provides a hand massager based on airbag massage, including a support plate and five massage cylinders disposed on the support plate;

[0006] Each massage cylinder has an inner layer body fixed coaxially on its inner wall; each inner layer body has several grooves arranged in a ring on its inner wall, extending along the axial direction of the massage cylinder.

[0007] Each groove is fitted with a rectangular shell for limiting sliding;

[0008] Each rectangular shell has multiple airbags on the side facing the axis of the massage cylinder.

[0009] Each massage cylinder is equipped with a drive mechanism, which is used to drive the rectangular shells inside the same massage cylinder to move back and forth simultaneously along the axis of the massage cylinder.

[0010] The side of the support plate is equipped with an inflation / deflation module for inflating and deflating the airbag.

[0011] In one implementation, an annular cavity is formed between the massage cylinder and the inner layer;

[0012] Each rectangular shell has an opening on the side opposite to the airbag body, and the opening end of the rectangular shell is in a sealed sliding fit with the inner wall of the groove.

[0013] An air guide cavity is formed between the rectangular shell and the inner wall of the groove;

[0014] A through hole is provided on the side of the rectangular shell facing the axis of the massage cylinder, corresponding to the position of each air bladder. The through hole is used to connect the air guide cavity and the air bladder.

[0015] Each groove has several flow guiding modules arranged along the axial direction of the massage cylinder on its inner wall, and each rectangular shell opening is fitted with a push plate extending along the length of the massage cylinder.

[0016] During the movement of the rectangular shell, the push plate and the flow guiding module squeeze together to achieve the connection between the air guiding cavity and the annular cavity;

[0017] Each massage cylinder has a connection port on its outer wall that communicates with the annular cavity, and each connection port is connected to the inflation / deflation module.

[0018] In one implementation, the flow guiding module includes a plug core and a spring;

[0019] The inner wall of the groove has several through-annular mounting holes, and the plug core is slidably embedded in the mounting holes one by one.

[0020] Each plug core has a main channel extending axially along the end of the plug core facing the axis of the massage cylinder.

[0021] Each plug core has a ring array around its periphery with several side channels that are all connected to the main channel;

[0022] One end of the spring is fixed to the end of the plug core that is away from the axis of the massage cylinder;

[0023] The spring extends axially along the core, and the other end of the spring is fixed to the inner wall of the massage cylinder;

[0024] When the spring is in its natural extended state, the side channels are all blocked and sealed by the inner wall of the corresponding mounting hole.

[0025] In one implementation, the drive mechanism includes a drive motor, a main gear, and several threaded rods, a nut seat, and a driven gear;

[0026] The massage tube has an installation cavity on the side away from the base of the fingers, and the drive motor is fixed to the end of the massage tube;

[0027] The output shaft of the drive motor extends through the mounting cavity and is fixed with the main gear;

[0028] Each groove is rotatably installed with a threaded rod, and each rectangular shell is fixed with a nut seat on its side;

[0029] The threaded rods pass through the nut seats one by one, and the two are connected by matching threads;

[0030] One end of each threaded rod extends through into the mounting cavity and is fixed with a driven gear.

[0031] Each driven gear in the same mounting cavity meshes with the main gear.

[0032] In one implementation, the end of the plug facing the axis of the massage cylinder has an arc-shaped slope;

[0033] The rectangular shell has sloping surfaces on both sides of its open end that are pressed together with the arc-shaped slope of the plug core.

[0034] In one implementation, the coverage length of the push plate is greater than the distance between two adjacent plug cores in the same groove.

[0035] In one implementation, the inflation / deflation module includes a piston cylinder, a piston body, a piston rod, and a miniature electric push cylinder;

[0036] A side frame is fixed to the side of the support plate, and the piston cylinder is fixed through the side frame;

[0037] The piston body is slidably mounted inside the piston cylinder, and one end of the piston rod is fixed to the piston body, while the other end extends to the outside of the piston cylinder.

[0038] A connecting bracket is fixed to the end of the piston rod located outside the piston cylinder;

[0039] The miniature electric push cylinder is fixed on the side frame and kept parallel to the piston cylinder;

[0040] The telescopic end of the miniature electric push cylinder is fixedly connected to the connecting frame;

[0041] The piston cylinder has an inflation / deflation port at the end furthest from the connecting frame.

[0042] In one implementation, the inflation / deflation module also includes a distributor;

[0043] The interface on the end side of the distributor is connected to the air inlet / outlet on the side end of the piston cylinder;

[0044] The five ports on the periphery of the distributor are connected to each other through pipes.

[0045] In one implementation, bearing seats are provided on both sides of the bottom surface of the support plate, and a shaft is rotatably mounted on both bearing seats, with a mounting seat fixedly fitted on the shaft.

[0046] The massage cylinder corresponding to the thumb is fixed to the side of the support plate, and the other four massage cylinders are fixed to the mounting base;

[0047] A linkage gear is fixed at one end of the shaft;

[0048] A rack is fixed on the connecting frame, and the rack meshes with the linkage gear.

[0049] The rack is kept parallel to the piston cylinder, and the rack is kept perpendicular to the axis of the shaft.

[0050] When the piston body moves to its limit position away from the distributor, the mounting base remains parallel to the support plate.

[0051] In one implementation, restraint straps are fixedly connected to both sides of the support plate, and the two restraint straps are connected by Velcro.

[0052] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0053] By incorporating a massage cylinder with a drive mechanism, the rectangular shell and its airbags can be continuously and precisely linearly adjusted along the axis of the massage cylinder, thus adapting to precise position adjustments for different massage needs without the need for manual disassembly.

[0054] By combining the flow guide module with the push plate, the connection between the air guide cavity and the annular cavity is established only when the rectangular shell moves to a specific position, realizing the automatic opening and closing of the airbag inflation and deflation path, and ensuring the effective driving and massage function of the airbag.

[0055] The coordinated operation of the inflation / deflation module and the drive mechanism allows for independent or coordinated control of the airbag's position adjustment and the inflation / deflation massage process, greatly enhancing ease of use and flexibility.

[0056] Through the meshing transmission of the rack and pinion and the linkage gear, the linear motion of the piston body can be converted into the rotation of the mounting base, which can drive the other four massage cylinders (excluding the one corresponding to the thumb) to rotate synchronously. While the air bladder is inflated and pressing, the joints connecting the four fingers (excluding the thumb) to the palm will undergo passive flexion and extension movements. This not only better matches the natural relaxed state of the human hand, improving the fit and comfort of the massage, but also effectively relieves joint stiffness and further enhances the overall massage effect. Attached Figure Description

[0057] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0058] Figure 2 for Figure 1 One of the schematic diagrams of the structure shown from another perspective;

[0059] Figure 3 for Figure 1 The second schematic diagram of the structure shown is from another perspective;

[0060] Figure 4 This is a schematic diagram of a single massage cylinder structure in this invention;

[0061] Figure 5 for Figure 4 A cross-sectional schematic diagram of the structure shown;

[0062] Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point A in the middle;

[0063] Figure 7 for Figure 5 Enlarged schematic diagram of the structure at point B;

[0064] Figure 8 This is a schematic diagram of a partial structure on the rectangular shell in this invention;

[0065] Figure 9 This is a schematic diagram of the drive mechanism structure in this invention;

[0066] Figure 10 This is a schematic diagram of a partial structure on the side frame in this invention;

[0067] Figure 11 This is a schematic diagram of the inflation / deflation module structure in this invention.

[0068] In the diagram: 1. Support plate; 101. Restraint strap; 11. Mounting seat; 12. Bearing seat; 13. Shaft; 14. Side frame; 2. Massage cylinder; 201. Connecting port; 202. Mounting cavity; 21. Annular cavity; 3. Inner layer body; 31. Slide groove; 32. Mounting hole; 4. Plug core body; 41. Main channel; 42. Side channel; 43. Spring; 5. Rectangular shell; 501. Air guide cavity; 502. Sloping surface; 51. Push plate; 52. Through hole; 6. Airbag body; 7. Drive motor; 71. Main gear; 72. Threaded rod; 73. Nut seat; 74. Driven gear; 8. Piston cylinder; 81. Piston body; 82. Piston rod; 83. Distributor; 9. Miniature electric push cylinder; 91. Connecting frame; 92. Rack; 93. Linkage gear. Detailed Implementation

[0069] This invention provides a hand massager based on airbag massage, mainly used for pressing and massaging the hands. During use, it can continuously and precisely linearly adjust the position of the airbag 6 according to different massage areas of the hand, overcoming the shortcomings of traditional massagers where the massage position is fixed and inconvenient to adjust. The following describes the hand massager in further detail with reference to the embodiments.

[0070] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0071] To facilitate understanding of the technical solution of this application, the core technical terms involved in this application are explained below:

[0072] The airbag body 6 refers to a bladder-shaped actuator made of flexible, expandable material that can expand in volume after inflation and exert pressure on the target area;

[0073] The drive mechanism refers to a collection of mechanical transmission components used to enable the rectangular shell 5 to perform controllable reciprocating motion along a fixed trajectory;

[0074] The flow guiding module refers to a mechanical control component that can passively and selectively open or close the air passage between the air guiding cavity 501 and the annular cavity 21 as the rectangular shell 5 moves.

[0075] Please see Figures 1 to 11 The hand massager provided in this application includes a support plate 1 and five massage cylinders 2 disposed on the support plate 1. The support plate 1 serves as a base, providing an installation foundation for the five massage cylinders 2. The massage cylinders 2 are hollow cylindrical structures, which facilitates finger insertion, and the positions of the five massage cylinders 2 correspond one-to-one with the positions of the five fingers.

[0076] Each massage cylinder 2 has an inner layer 3 coaxially fixed on its inner wall, and the inner layer 3 and the inner wall of the massage cylinder 2 form a sealed annular cavity 21; each inner layer 3 has a number of sliding grooves 31 extending along the axial direction of the massage cylinder 2 arranged in an annular array on its inner wall; each sliding groove 31 has a rectangular shell 5 that is limited and slidably installed in its inner wall.

[0077] Each rectangular shell 5 has multiple airbags 6 on one side of its surface facing the axis of the massage cylinder 2; each massage cylinder 2 is equipped with a drive mechanism to drive each rectangular shell 5 in the same massage cylinder 2 to move back and forth along the axis of the massage cylinder 2 simultaneously; the side of the support plate 1 is equipped with an inflation / deflation module for inflating and deflating the airbags 6.

[0078] In this embodiment, the slide groove 31 serves as the sliding track of the rectangular shell 5, so that the movement trajectory of the rectangular shell 5 is strictly limited to the axial direction of the massage cylinder 2, and the airbag 6 faces the central axis of the massage cylinder 2 directly. When the user's finger is inserted into the massage cylinder 2, the airbag 6 faces the surface of the finger.

[0079] According to the present invention, when the hand massager is in operation, the user's fingers are inserted into the five massage cylinders 2 one by one, and the drive mechanism drives all the rectangular shells 5 in the same massage cylinder 2 to slide axially back and forth along the slide groove 31 at the same time.

[0080] As the rectangular shell 5 moves, the multiple airbags 6 fixed on it also move along with it, thereby precisely changing the position of the airbags 6 in the direction of finger length.

[0081] Once the airbag 6 moves to the target position, the inflation / deflation module is activated to inflate these airbags 6, causing them to expand and press against the surface of the user's fingers; after the massage ends or when the user needs to change positions, the inflation / deflation module deflates the airbags.

[0082] The above mechanism allows the airbag 6 to be precisely moved to any desired position during massage, solving the problem of non-continuous adjustment of the massage position and allowing users to dynamically switch positions during the massage without manual disassembly.

[0083] In one embodiment, such as Figure 5 , Figure 7 and Figure 8 As shown, regarding the connection relationship between the rectangular shell 5 and the slide groove 31 mentioned above, each rectangular shell 5 has an opening on the side away from the airbag body 6, and the opening end of the rectangular shell 5 is sealed and slidably fitted with the inner wall of the slide groove 31.

[0084] The open end of the rectangular shell 5 and the inner wall of the groove 31 form a precise sliding seal pair (the specific sealing structure adopts the existing technology, which will not be described in detail in this application). This structure makes an independent and sealed air guide cavity 501 formed between the rectangular shell 5 and the inner wall of the groove 31.

[0085] A through hole 52 is provided on the side of the rectangular shell 5 facing the axis of the massage cylinder 2, corresponding to the position of each air bladder 6. The air guide cavity 501 communicates with the interior of all the air bladders 6 on the same rectangular shell 5 through the through hole 52.

[0086] Each groove 31 has several flow guiding modules arranged along the axial direction of the massage cylinder 2 on its inner wall, and each rectangular shell 5 has a push plate 51 extending along the length of the massage cylinder 2 embedded in its opening.

[0087] During the movement of the rectangular shell 5, the push plate 51 and the flow guide module squeeze and cooperate to realize the connection between the air guide cavity 501 and the annular cavity 21; each massage cylinder 2 has a connection port 201 on its outer wall that communicates with the annular cavity 21, and each connection port 201 is connected to the inflation and deflation module.

[0088] In this embodiment, the positive or negative pressure airflow generated by the inflation / deflation module enters the annular cavity 21 through the pipeline and connection port 201; when the drive mechanism drives the rectangular shell 5 to slide, the push plate 51 embedded in its opening will pass through each of the arrayed flow guiding modules in sequence.

[0089] Whenever the pusher plate 51 moves to contact a certain flow guide module, a squeezing action is generated, triggering the flow guide module to act, thereby opening the air passage between the annular cavity 21 and the air guide cavity 501 at that location, realizing inflation and deflation; when the pusher plate 51 leaves the flow guide module, the flow guide module automatically resets and blocks the air passage.

[0090] This design enables precise control of inflation and deflation of the airbag 6 in the rectangular shell 5 that has moved to a specific position, avoiding waste of air source and misoperation of the airbag 6 in non-target areas, thus eliminating the need for complex electronic air distribution valves in the entire system.

[0091] In one embodiment, such as Figure 6 and Figure 7 As shown, the aforementioned flow guiding module includes a plug core 4 and a spring 43.

[0092] The inner wall of the slide groove 31 is provided with several mounting holes 32 that pass through the annular cavity 21, and the plug core 4 is slidably embedded in the mounting holes 32 in a corresponding manner; each plug core 4 has a main channel 41 extending along the axial direction of the end facing the massage cylinder 2; each plug core 4 has several side channels 42 arranged in annular array around its periphery, all of which are connected to the main channel 41.

[0093] One end of the spring 43 is fixed to the end of the plug core 4 that is away from the axis of the massage cylinder 2; the spring 43 extends along the axial direction of the plug core 4, and the other end of the spring 43 is fixed to the inner wall of the massage cylinder 2; in the naturally extended state of the spring 43, the side holes 42 are all blocked by the inner wall of the corresponding mounting holes 32.

[0094] In the assembly relationship of this embodiment, the plug core 4 is suspended in the mounting hole 32 under the support of the spring 43. In the initial state without external pressure, the elastic force of the spring 43 fixes the position of the plug core 4, and the side channel 42 on its side is completely blocked by the inner wall of the mounting hole 32 and is therefore closed. At this time, the high-pressure gas in the annular cavity 21 cannot enter the gas guide cavity 501 through the plug core 4. This state is as follows. Figure 6 As shown.

[0095] When the push plate 51 moves with the rectangular shell 5 and presses the end of the plug 4 facing the axis of the massage cylinder 2, the plug 4 is forced to move inward against the elastic force of the spring 43. The side channel 42, which was originally blocked, will slide into the internal space of the annular cavity 21, so that the annular cavity 21, the side channel 42, the main channel 41 and the air guide cavity 501 are connected in sequence to form a complete airflow path. This state is as follows: Figure 7 As shown.

[0096] This purely mechanical extrusion-type flow guiding structure eliminates the need for additional electronic components to control the airflow. The structure is simple and reliable, and the on / off action is precisely linked to the movement of the rectangular shell 5, resulting in a fast response speed.

[0097] In this embodiment, as Figure 6 and Figure 8 As shown, regarding the aforementioned fit between the plug core 4 and the rectangular shell 5, the end of the plug core 4 facing the axis of the massage cylinder 2 has an arc-shaped slope; the rectangular shell 5 has sloping surfaces 502 on both sides of its open end that are pressed and fitted with the arc-shaped slope of the plug core 4.

[0098] Specifically, when the rectangular shell 5 slides along the groove 31 and approaches a certain plug core 4, the slope surface 502 at the open end of the rectangular shell 5 will first contact the arc-shaped slope surface at the end of the plug core 4.

[0099] As the rectangular shell 5 continues to move, the two smooth, inclined surfaces press against each other, generating a disintegrating force that forces the plug core 4 to contract inward along its own axis (i.e., the radial direction of the massage cylinder 2).

[0100] This combination of slope-to-slope compression smoothly converts the axial movement of the rectangular shell 5 into the radial movement of the plug core 4 along the massage cylinder 2, avoiding rigid collisions and jamming, and making the air passage process smoother and more fluid.

[0101] In one embodiment, such as Figure 7 As shown, the aforementioned push plate 51 has a coverage length greater than the distance between two adjacent plug cores 4 within the same groove 31.

[0102] This relationship between length and spacing ensures that the coverage area of ​​the push plate 51 can be seamlessly connected during the continuous movement of the rectangular shell 5, especially when it moves from one core 4 to the next adjacent core 4.

[0103] When one end of the push plate 51 is about to detach from the previous plug core 4, its other end has already covered and begun to squeeze the next plug core 4, thus ensuring that at least one plug core 4 is always in the state of being squeezed and opened by the push plate 51.

[0104] This design eliminates the possibility of brief interruptions in the airflow path when switching the flow control module, ensuring the continuity and stability of the air supply to the rectangular shell 5.

[0105] In addition, the thickness of the push plate 51 is much smaller than the inner diameter of the main channel 41, so as to avoid the push plate 51 from blocking or obstructing the main channel 41.

[0106] In one embodiment, such as Figure 4 , Figure 5and Figure 9 As shown, the drive mechanism mentioned above includes a drive motor 7, a main gear 71, and several threaded rods 72, a nut seat 73, and a driven gear 74.

[0107] The massage cylinder 2 has an installation cavity 202 on the side away from the base of the fingers. The installation cavity 202 provides a closed and stable installation space for the meshing transmission of each gear.

[0108] The drive motor 7 is fixed to the end of the massage cylinder 2; the output shaft of the drive motor 7 extends through into the mounting cavity 202 and is fixed with the main gear 71; each slide groove 31 is rotatably installed with a threaded rod 72, and each rectangular shell 5 is fixed with a nut seat 73 on its side.

[0109] The threaded rods 72 pass through the nut seats 73 one by one, and the two are threadedly matched; one end of each threaded rod 72 extends into the mounting cavity 202 and is fixed with a driven gear 74; each driven gear 74 in the same mounting cavity 202 meshes with the main gear 71.

[0110] In this embodiment, since all driven gears 74 in the same mounting cavity 202 mesh with the main gear 71, the power is synchronously and evenly distributed to each driven gear 74 and the threaded rod 72 connected thereto.

[0111] Each threaded rod 72 forms a helical transmission pair with the corresponding nut seat 73 on the side of the rectangular shell 5. When the threaded rod 72 rotates synchronously with the driven gear 74, the nut seat 73 cannot rotate due to the limitation of the slide groove 31 on the rectangular shell 5. As a result, it is forced to move linearly along the axial direction of the threaded rod 72, and finally drives the rectangular shell 5 and the airbag body 6 to achieve precise displacement along the axial direction of the massage cylinder 2.

[0112] The above connection method ensures that the rectangular shells 5 within the same massage cylinder 2 move synchronously, and the spiral drive has self-locking properties, which can make the airbag 6 stay stably at any position and resist the reaction force generated during the pressing process.

[0113] In one embodiment, such as Figure 3 , Figure 10 and Figure 11 As shown, the aforementioned inflation / deflation module includes a piston cylinder 8, a piston body 81, a piston rod 82, and a miniature electric push cylinder 9.

[0114] A side frame 14 is fixed to the side of the support plate 1, and the piston cylinder 8 is fixed to the side frame 14 through it; the piston body 81 is slidably installed inside the piston cylinder 8, one end of the piston rod 82 is fixed to the piston body 81, and the other end extends to the outside of the piston cylinder 8.

[0115] A connecting frame 91 is fixed to the end of the piston rod 82 located outside the piston cylinder 8; the miniature electric push cylinder 9 is fixed on the side frame 14 and kept parallel to the piston cylinder 8; the telescopic end of the miniature electric push cylinder 9 is fixedly connected to the connecting frame 91; the end of the piston cylinder 8 away from the connecting frame 91 has an air inlet / outlet.

[0116] Based on the assembly in this embodiment, the inflation / deflation module provides a complete functional unit for generating air pressure; the micro electric push cylinder 9 serves as the drive source, and its extension and reciprocating ends perform linear reciprocating motion.

[0117] Since the telescopic end of the micro electric push cylinder 9 is fixed to the connecting frame 91, and the connecting frame 91 is rigidly connected to the piston body 81 through the piston rod 82, the telescopic movement of the micro electric push cylinder 9 directly drives the piston body 81 to make precise piston movements inside the piston cylinder 8.

[0118] When the piston body 81 moves away from the inflation / deflation port, the volume of the inner cavity of the piston cylinder 8 increases and the air pressure decreases, thus performing the deflation operation; conversely, when the piston body 81 moves towards the inflation / deflation port, the volume of the inner cavity is compressed and the air pressure increases, thus performing the inflation operation.

[0119] It adopts an integrated piston-type air supply unit, which has a compact structure, generates air pressure directly and stably, and changes the traditional complex pipeline system that relies on air pumps.

[0120] In one embodiment, such as Figure 11 As shown, for the extended structure of the aforementioned inflation / deflation module, the inflation / deflation module also includes a distributor 83; the end interface of the distributor 83 is connected to the inflation / deflation port on the side of the piston cylinder 8; the five interfaces on the periphery of the distributor 83 are respectively connected to each connection port 201 through pipes.

[0121] In this embodiment, a distributor 83 efficiently divides the single-path air pressure generated by the piston cylinder 8 into five parts, and supplies or draws air to the annular cavity 21 of the five massage cylinders 2 simultaneously through each pipe and connection port 201.

[0122] This design allows all airbags 6 to share a single inflation / deflation source, ensuring consistent massage pressure across all fingers, simplifying the system structure, and reducing manufacturing costs.

[0123] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 10 As shown, for the above-mentioned method of fixing the massage cylinder 2 corresponding to the four fingers other than the thumb, the support plate 1 has bearing seats 12 on both sides of the bottom surface, and the two bearing seats 12 are rotatably mounted on the shaft rod 13, and the mounting seat 11 is fixedly fitted on the shaft rod 13.

[0124] Among them, the massage cylinder 2 corresponding to the thumb is fixed to the side of the support plate 1, and the other four massage cylinders 2 are fixed to the mounting base 11.

[0125] A linkage gear 93 is fixed at one end of the shaft 13; a rack 92 is fixed on the connecting frame 91, and the rack 92 meshes with the linkage gear 93; the rack 92 is parallel to the piston cylinder 8, and the rack 92 is perpendicular to the axis of the shaft 13.

[0126] Specifically, when the piston body 81 moves to its limit position away from the distributor 83, the mounting base 11 remains parallel to the support plate 1, and the four fingers other than the thumb are in a straight position; when the piston body 81 moves to the side closer to the distributor 83 (in the state of the airbag body 6 being inflated and pressed), the mounting base 11 causes the four fingers to bend simultaneously.

[0127] In this embodiment, when the miniature electric push cylinder 9 drives the piston body 81 to perform an inflation action, that is, when the connecting frame 91 moves towards the piston cylinder 8, the rack 92 fixed on the connecting frame 91 also moves in a straight line.

[0128] Since the rack 92 meshes with the linkage gear 93, and the linkage gear 93 is fixed on the shaft 13 which is fixed to the mounting base 11, the linear motion of the rack 92 is converted into the rotational motion of the linkage gear 93 and the shaft 13, thereby driving the mounting base 11 and the four massage cylinders 2 fixed thereon to rotate around the axis of the shaft 13.

[0129] This mechanical linkage cleverly utilizes the same miniature electric push cylinder 9 as a power source. While inflating and pressing the airbag 6, it simultaneously drives the other four massage cylinders 2 (excluding the thumb) to rotate relative to the support plate 1, causing the joints connecting these four fingers and the palm to undergo passive flexion and extension movements.

[0130] This design allows the fingers to remain in a more natural and relaxed state, increasing the fit between the massage tube 2 and the fingers and optimizing the user experience. On the other hand, it can move the joints, relieving the stiffness caused by maintaining the same posture for a long time. At the same time, in conjunction with the pressure of the airbag, it can better promote blood circulation in the hands, effectively reducing hand fatigue and soreness.

[0131] In addition, the synergistic mechanism of the aforementioned pneumatic compression and passive joint flexion and extension has additional technical effects in rehabilitation physiotherapy, as follows:

[0132] Continuous passive movement of the metacarpophalangeal joints can stretch the joint capsule, collateral ligaments and surrounding tendons, maintain the normal range of motion of the metacarpophalangeal joints, and delay degenerative changes in the joints.

[0133] When the fingers are bent, the flexor muscles, extensor muscles and fascia around the metacarpophalangeal joints are in a stretched state. At this time, the inflated pressure of the air bladder 6 can act more deeply on the stretched soft tissue, accurately act on the origin and insertion points of muscles and tendon attachments, and increase the depth of massage.

[0134] The joint flexion and extension movements, combined with the periodic compression of the airbag, accelerate the return of venous blood and lymph in the hands, promote the excretion of metabolic waste, improve peripheral circulation in the hands, and relieve symptoms such as coldness and numbness in the hands.

[0135] Regular passive metacarpophalangeal joint movements can stimulate proprioceptors in the hand, improve nerve conduction function, and help maintain the coordination of fine hand movements.

[0136] In one embodiment, such as Figure 2 As shown, regarding the aforementioned method of fixing the hand to the support plate 1, restraint straps 101 are fixedly connected to both sides of the support plate 1. The two restraint straps 101 are connected by Velcro, used to securely restrain the palm to the support plate 1 when worn.

[0137] With the Velcro-attached binding strap 101, users can quickly and easily adjust the binding force according to the thickness and size of their palms, ensuring that the support plate 1 fits firmly against the back and palm of the hand, preventing overall displacement or loosening during the massage process.

[0138] It should be noted that, in some optional embodiments, the main structural components such as the support plate 1, massage cylinder 2, inner body 3, and rectangular shell 5 can be made of engineering plastics or aluminum alloys to reduce the overall weight while ensuring structural strength; wear-resistant coatings or sealing rings can be added between each sliding mating surface to improve sliding life and sealing effect.

[0139] The airbag body 6 is made of food-grade silicone or TPU elastic film material to ensure safety and comfort when in contact with the skin; the connection between the connector 201 and the pipe adopts a quick-connect fitting for easy assembly and maintenance.

[0140] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hand massager based on airbag massage, comprising a support plate (1) and five massage cylinders (2) disposed on the support plate (1), characterized in that: Each massage cylinder (2) has an inner layer body (3) coaxially fixed on its inner wall; each inner layer body (3) has a number of grooves (31) extending along the axial direction of the massage cylinder (2) arranged in a ring on its inner wall. Each of the aforementioned grooves (31) is fitted with a rectangular shell (5) that is limited to sliding within it; Each of the rectangular shells (5) has multiple airbags (6) on one side of its surface facing the axis of the massage cylinder (2); Each of the massage cylinders (2) is provided with a driving mechanism, which is used to drive each rectangular shell (5) in the same massage cylinder (2) to move back and forth along the axis of the massage cylinder (2) simultaneously; The side of the support plate (1) is provided with an inflation / deflation module for inflating and deflating the airbag body (6).

2. The hand massager according to claim 1, characterized in that: An annular cavity (21) is formed between the massage tube (2) and the inner layer (3); Each of the rectangular shells (5) has an opening on the side opposite to the airbag body (6), and the opening end of the rectangular shell (5) is in a sealed sliding fit with the inner wall of the groove (31). An air guide cavity (501) is formed between the inner wall of the rectangular shell (5) and the groove (31); On the rectangular shell (5), a through hole (52) is provided on one side facing the axis of the massage cylinder (2) and at the position corresponding to each airbag (6). The through hole (52) is used to connect the air guide cavity (501) and the airbag (6). Each of the slide grooves (31) has several flow guiding modules arranged along the axial direction of the massage cylinder (2) on its inner wall, and each of the rectangular shells (5) has a push plate (51) extending along the length direction of the massage cylinder (2) embedded in its opening. During the movement of the rectangular shell (5), the push plate (51) and the flow guide module are squeezed together to realize the connection between the air guide cavity (501) and the annular cavity (21); Each massage cylinder (2) has a connection port (201) on its outer wall that communicates with the annular cavity (21), and each connection port (201) is connected to the inflation / deflation module.

3. The hand massager according to claim 2, characterized in that: The flow guiding module includes a plug core (4) and a spring (43); The inner wall of the groove (31) is provided with several through-ring cavity (21) mounting holes (32), and the plug core (4) is slidably embedded in the mounting holes (32) in a corresponding manner. Each of the plug cores (4) has a main channel (41) extending along the axial direction of the plug core (4) at one end facing the axis of the massage cylinder (2); Each of the plug cores (4) has a ring array around its periphery with several side channels (42) that are all connected to the main channel (41). One end of the spring (43) is fixed to the end of the plug core (4) that is away from the axis of the massage cylinder (2); The spring (43) extends along the axial direction of the plug core (4), and the other end of the spring (43) is fixed to the inner wall of the massage cylinder (2); When the spring (43) is in its natural extended state, the side holes (42) are all blocked by the inner wall of the corresponding mounting holes (32).

4. The hand massager according to claim 2, characterized in that: The drive mechanism includes a drive motor (7), a main gear (71), and several threaded rods (72), a nut seat (73), and a driven gear (74). The massage cylinder (2) has an installation cavity (202) on the side away from the finger root, and the drive motor (7) is fixed on the end of the massage cylinder (2); The output shaft of the drive motor (7) extends through into the mounting cavity (202) and is fixed with the main gear (71). Each of the aforementioned grooves (31) is rotatably installed with a threaded rod (72), and each of the aforementioned rectangular shells (5) is fixed with a nut seat (73) on its side. The threaded rod (72) passes through the nut seat (73) in a corresponding manner, and the two are threadedly matched. One end of each of the threaded rods (72) extends through into the mounting cavity (202) and is fixed with the driven gear (74). Each driven gear (74) in the same mounting cavity (202) meshes with the main gear (71).

5. The hand massager according to claim 3, characterized in that: The end of the plug core (4) facing the axis of the massage cylinder (2) has an arc-shaped slope; The rectangular shell (5) has sloping surfaces (502) on both sides of its open end that are in contact with the arc-shaped slope of the plug core (4).

6. The hand massager according to claim 3, characterized in that: The coverage length of the push plate (51) is greater than the distance between two adjacent plug cores (4) in the same groove (31).

7. The hand massager according to claim 2, characterized in that: The inflation / deflation module includes a piston cylinder (8), a piston body (81), a piston rod (82), and a miniature electric push cylinder (9). The support plate (1) is fixed with a side frame (14) on its side, and the piston cylinder (8) is fixed through the side frame (14); The piston body (81) is slidably mounted inside the piston cylinder (8), and one end of the piston rod (82) is fixed on the piston body (81), while the other end extends to the outside of the piston cylinder (8). The piston rod (82) is fixed with a connecting bracket (91) at the end outside the piston cylinder (8). The miniature electric push cylinder (9) is fixed on the side frame (14) and kept parallel to the piston cylinder (8); The telescopic end of the miniature electric push cylinder (9) is fixedly connected to the connecting frame (91); The piston cylinder (8) has an air inlet / outlet at the end away from the connecting frame (91).

8. The hand massager according to claim 7, characterized in that: The inflation / deflation module also includes a distributor (83); The end interface of the distributor (83) is connected to the air inlet / outlet of the piston cylinder (8); The five interfaces on the periphery of the distributor (83) are connected to each of the connection ports (201) through pipes.

9. The hand massager according to claim 8, characterized in that: The support plate (1) has bearing seats (12) on both sides of its bottom surface. A shaft (13) is rotatably mounted on both bearing seats (12). A mounting seat (11) is fixedly fitted on the shaft (13). The massage cylinder (2) corresponding to the thumb is fixed to the side of the support plate (1), and the other four massage cylinders (2) are fixed to the mounting base (11); One end of the shaft (13) is fixed with a linkage gear (93). A rack (92) is fixed on the connecting frame (91), and the rack (92) meshes with the linkage gear (93); The rack (92) is parallel to the piston cylinder (8), and the rack (92) is perpendicular to the axial direction of the shaft (13); When the piston body (81) moves to its limit position away from the distributor (83), the mounting base (11) remains parallel to the support plate (1).

10. The hand massager according to claim 1, characterized in that: The support plate (1) is fixedly connected to two sides with restraint straps (101), and the two restraint straps (101) are connected by Velcro.

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