A stretchable hand massager

Abstract

This utility model provides a stretchable hand massager, including a massager body and a finger stretching mechanism. The massager body includes an inner shell, and the finger stretching mechanism is located at the front end of the massager body and disposed within the inner shell. The finger stretching mechanism includes a finger airbag holding bag, a telescopic seat, and a drive assembly. The finger airbag holding bag is assembled on the telescopic seat, and the telescopic seat is slidably mounted on the inner shell. The drive assembly includes a telescopic airbag and a torsion spring. A limiting base is provided on the inner shell, and the telescopic airbag acts between the limiting base and the telescopic seat. The telescopic seat has symmetrically arranged first force-bearing parts on both sides, and the inner shell has correspondingly arranged second force-bearing parts. The torsion spring also has a fulcrum, and its two ends act on the first force-bearing parts and the second force-bearing parts, respectively. This utility model aims to provide a hand massager that can combine pressing and stretching functions to meet different massage needs.

Description

Technical Field

[0001] This utility model relates to the field of massager technology, and in particular to a stretchable hand massager. Background Technology

[0002] In the current technology, most hand massagers on the market only have a pressing and tightening mode to achieve massage and relaxation. Some hand massagers have a more complex structure for hand stretching, which is not suitable for home use.

[0003] Chinese Patent No. CN206081034U discloses a hand massage device, comprising: a lower housing; a stretching body slidably disposed on the lower housing, the stretching body having a clamp for clamping fingers; a fixed shaft disposed on the side wall of the stretching body, the clamp being a simulated massage finger slidably disposed on the fixed shaft; the stretching body reciprocating along a guide rail disposed on the lower housing; a main body wheel rotatably disposed on the fixed shaft, three simulated massage fingers being installed in a groove opened on the main body wheel; the simulated massage fingers are plate-shaped, separating the four fingers of the palm; clamping airbags are disposed on two opposite sides of the stretching body, the two clamping airbags moving relative to each other to clamp the simulated massage fingers.

[0004] While the hand massager in the aforementioned patent fulfills the function of stretching fingers, it has a complex structure, numerous parts, occupies a large space, and uses a clamp for stretching, resulting in low comfort and a poor user experience. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a hand massager that can combine pressing and stretching functions. This solves the problem that traditional hand massagers can only perform single squeezing massage and cannot stretch and relax the ligaments of the hand joints. At the same time, it simplifies the transmission path, has a simple part structure, small size, and is applicable to a wide range of scenarios.

[0006] To achieve the above objectives, this utility model provides a stretchable hand massager, which adopts the following technical solution: A stretchable hand massager includes a massager body and a finger stretching mechanism. The massager body includes an inner shell, and the finger stretching mechanism is located at the front end of the massager body and disposed in the inner shell. The finger stretching mechanism includes a finger airbag holding bag, a telescopic seat, and a drive assembly. The finger airbag gripping bag is assembled on the telescopic base, and the telescopic base is slidably installed on the inner liner shell; the drive assembly includes the telescopic airbag bag and a torsion spring. The inner liner shell is provided with a limiting base, and the telescopic airbag acts between the limiting base and the telescopic base; The telescopic seat is symmetrically provided with a first force-bearing part, and the inner liner shell is provided with a second force-bearing part diagonally in front of each first force-bearing part. The two ends of the torsion spring act on the first force-bearing part and the second force-bearing part respectively. The torsion spring is also provided with a fulcrum between the first force-bearing part and the second force-bearing part. The first force-bearing part, the second force-bearing part and the fulcrum form a triangular force-bearing structure. The telescopic airbag inflates and pushes against the telescopic seat, causing the finger airbag gripper to extend forward and the torsion spring to twist and deform to store elastic potential energy; the telescopic airbag deflates and releases pressure, releasing the elastic potential energy and returning to its original position, causing the telescopic seat and finger airbag gripper to return to their original position.

[0007] By adopting the above technical solution, the inflatable airbag pushes the telescopic seat, causing the finger airbag clamping bag to extend forward. Simultaneously, the triangular force structure formed by the first and second force-bearing parts and the fulcrum causes the torsion spring to deform and store elastic potential energy. After the telescopic airbag is depressurized, the torsion spring releases its elastic potential energy, driving the telescopic seat and the finger airbag clamping bag to return to their original position. This structure eliminates the need for complex transmission components such as motors and lead screws, resulting in a simple structure, low operating noise, and controllable cost. The finger airbag clamping bag can simultaneously perform finger clamping, kneading, and stretching massage. The stretching force can be continuously adjusted via the airbag pressure, providing gentle movements without hard impact, meeting the relaxation needs of different users' hands and finger joints. The triangular force structure stably transmits the torsion spring force, ensuring smooth and reliable telescopic movement. The mechanism has few parts, facilitating controllable stretching rehabilitation operations for the fingers and ensuring high safety.

[0008] The present invention is further configured such that: the telescopic seat includes a front slide, a vertical plate, and a connecting arm disposed between the front slide and the vertical plate; the first force-bearing part is symmetrically disposed on the side of the vertical plate away from the limiting base; the fulcrum is fixedly disposed on the inner liner shell; one end of the torsion spring is fixed to the first force-bearing part to form a fixed end, and the other end rotates around the fulcrum to form a movable end; the movable end slides and acts on the second force-bearing part so that when the telescopic airbag expands and pushes the telescopic seat, it accumulates torsional elastic potential energy.

[0009] By adopting the above technical solution, the torsion spring forms a lever-type force transmission structure based on the fulcrum. One end of the torsion spring is fixed to the first force-bearing part on the upright plate as the fixed end, and the other end rotates around the fulcrum and the movable end slides on the second force-bearing part diagonally in front. The fulcrum limits the torsion center of the torsion spring, preventing the torsion center from drifting with the telescopic seat and keeping the direction of the torsion spring's elastic force stable. The symmetrically arranged torsion springs on both sides can balance the lateral forces, effectively suppressing the skew during the sliding process of the telescopic seat and reducing the probability of jamming. When the telescopic airbag pushes the telescopic seat forward, the torsion spring twists and accumulates elastic potential energy. During the movement of the telescopic seat, the movable end of the torsion spring can slide along the second force-bearing part to adaptively compensate for changes in stroke. The use of torsion spring torsion energy storage can realize elastic energy storage in the limited space of the inner shell, reducing the space occupied by the mechanism along the telescopic direction and making it more conducive to a compact layout in the inner shell. The force transmission method of the torsion spring rotating around the fulcrum is smooth, the elastic force output is stable, the reset action is stable, and the reciprocating action of the finger stretching mechanism is continuously reliable.

[0010] The present invention is further configured such that: the movable end is bent and extended to form a rod, and the rod is attached to the upright plate and slides with the upright plate.

[0011] By adopting the above technical solution, the movable end of the torsion spring is bent and extended to form a rod. The rod slides and fits against the upright plate, which can limit the lateral displacement and jumping of the movable end of the torsion spring. A stable sliding mechanism is formed between the rod and the upright plate, which guides the movable end to move along a set trajectory. This makes the torsion spring torsion energy storage and release process more stable, reduces friction interference, further reduces the risk of sliding and jamming of the telescopic seat, and improves the reliability of the lever force transmission structure.

[0012] The present invention is further configured such that: the inner liner shell is integrally formed or fixedly assembled from an inner liner upper cover and an inner liner lower cover; the finger stretching mechanism is provided on the inner liner lower cover; sliding protrusions are provided on both sides of the front slide; the inner liner lower cover is provided with a slot adapted to the front slide; and guide grooves are provided on both sides of the slot for the sliding protrusions to slide.

[0013] By adopting the above technical solution, the inner liner shell is integrally formed or fixedly assembled with the inner liner upper cover and inner liner lower cover. The overall assembly of the shell has good compressive strength, which facilitates the encapsulation and installation of internal components and provides a stable mounting base for the finger stretching mechanism. Sliding protrusions are provided on both sides of the front slide, which form a sliding fit with the guide grooves on both sides of the slot of the inner liner lower cover. The sliding protrusions are constrained to slide linearly within the guide grooves, which plays a radial limiting and guiding role for the telescopic seat, restricting the telescopic seat from moving up and down or left and right, and ensuring that the telescopic seat can only slide back and forth along the axial direction. This effectively prevents the telescopic seat from tilting or getting stuck during sliding, and improves the straightness and consistency of the telescopic movement of the finger airbag holding bag.

[0014] The present invention is further configured such that: a notch is provided on the limiting base; an air nozzle is provided at the end of the telescopic airbag away from the upright plate, and the air nozzle is engaged with the notch so that the telescopic airbag and the limiting base can be positioned and engaged; the finger airbag holding bag includes four independent finger airbags, and each finger airbag is individually equipped with an air nozzle on the side facing the front slide, and the front slide is provided with a matching air nozzle through hole corresponding to each air nozzle.

[0015] By adopting the above technical solution, a notch is opened in the limiting base, and the air nozzle of the telescopic airbag is engaged in the notch, realizing the positioning and cooperation between the telescopic airbag and the limiting base. This can restrain the telescopic airbag from shifting or twisting during operation, ensure the stability of the airbag's thrust direction, and facilitate the rapid assembly and positioning of the airbag. The finger airbag clamping bag is equipped with four independent finger airbags, each with its own air nozzle. The air nozzle is installed by corresponding to the air nozzle through hole of the front slide, which can realize independent air supply control for each finger airbag. It can adjust the clamping pressure of different fingers separately, adapt to the differences in the thickness of each finger, and make the massage control more flexible and precise. The air nozzle is limited by the through hole of the front slide, the pipeline is neatly arranged, the internal space is highly utilized, and the air nozzle shaking does not interfere with the sliding action of the telescopic base.

[0016] The present invention is further configured such that: the upper inner cover and the lower inner cover are joined together on both sides to form a thumb through hole for placing the thumb; the upper inner cover and the lower inner cover are respectively provided with an upper airbag and a lower airbag on their opposite sides, and the upper airbag and the lower airbag are each independently equipped with an air nozzle; the lower airbag is symmetrically equipped with a thumb airbag that can press the thumb, and the thumb airbag is correspondingly arranged at the thumb through hole.

[0017] By adopting the above technical solution, the upper and lower inner lining covers are joined on both sides to form a thumb hole, allowing the thumb to pass through and be placed, achieving independent thumb placement. The upper and lower inner lining covers, respectively, have independent air nozzles on their opposite surfaces, enabling pressure application to the back and palm of the hand, providing a comprehensive hand massage. The lower air bag has symmetrically placed thumb airbags at the thumb hole, specifically designed for thumb compression massage. This combines stretching massage of the other four fingers with thumb pressure therapy, catering to the massage needs of the palm, back of the hand, and thumb, covering the entire hand area. Each airbag has an independent air nozzle, allowing for separate control of the massage pressure on the palm and thumb, adapting to different hand sizes and enhancing the overall comprehensiveness of the hand massage. The airbags are assembled on the inner side of the mating shell, resulting in a compact structure that does not interfere with the sliding movement of the internal telescopic seat.

[0018] The present invention is further configured such that: each of the air nozzles is connected to the air pump through an air valve, the massager body is also provided with a lithium battery for powering the air pump, and the front end of the massager body is provided with a charging interface for connecting to an external power source.

[0019] By adopting the above technical solution, each air nozzle is connected to the air pump via an air valve. The air valve allows for independent control of the inflation and deflation of each airbag, enabling individual or combined operation of finger stretching, palm pressing, and thumb massage movements, providing flexible control logic. The massager body is equipped with a lithium battery to power the air pump, supporting portable use without an external power source and free from cable constraints. A charging port is located at the end of the body to charge the lithium battery, balancing built-in battery life with external power supply options, thus enhancing the product's versatility. The entire pneumatic and power supply system is integrated into the massager body, resulting in a simple layout that facilitates daily operation.

[0020] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a bottom view of the massager body; Figure 3 yes Figure 2 Sectional view at point AA; Figure 4 This is a schematic diagram of the three-dimensional structure of the massager body. Figure 1 ; Figure 5 This is a three-dimensional structural diagram of the telescopic base; Figure 6 This is a structural diagram of the inner lining cover; Figure 7 This is a schematic diagram of the interior of the inner lining shell; Figure 8 This is a schematic diagram of the three-dimensional structure of the massager body. Figure 2 .

[0022] Explanation of reference numerals in the attached figures 1. Massager body; 2. Inner shell; 21. Second force-bearing part; 22. Inner upper cover; 23. Inner lower cover; 231. Groove; 232. Guide slide; 24. Thumb through hole; 3. Finger airbag holding bag; 31. Finger airbag; 4. Telescopic seat; 41. First force-bearing part; 42. Front slide; 421. Sliding protrusion; 422. Air nozzle through hole; 43. Upright plate; 44. Connecting arm; 5. Drive assembly; 51. Telescopic airbag bag; 52. Torsion spring; 521. Fixed end; 522. Movable end; 523. Rod; 524. Fulcrum; 6. Limiting base; 61. Notch; 7. Air nozzle; 8. Upper airbag bag; 9. Lower airbag bag; 91. Thumb airbag; 10. Air valve; 11. Lithium battery; 12. Charging interface; 13. Air pump. Detailed Implementation

[0023] In the description of this application, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0024] Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The following will refer to the appendix in the embodiments of this utility model. Figure 1-8 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] As attached Figure 1-8 As shown, a stretchable hand massager includes a massager body 1 and a finger stretching mechanism. The massager body 1 includes an inner liner shell 2, which is integrally formed or fixedly assembled from an inner liner upper cover 22 and an inner liner lower cover 23. The finger stretching mechanism is located at the front end of the massager body 1 and is disposed on the inner liner lower cover 23.

[0027] The finger stretching mechanism includes a finger airbag clamping bag 3, a telescopic seat 4, and a drive assembly 5; the finger airbag clamping bag 3 is assembled on the telescopic seat 4, and the telescopic seat 4 is slidably installed on the inner liner cover 23; the telescopic seat 4 includes a front slide 42, a vertical plate 43, and a connecting arm 44 disposed between the front slide 42 and the vertical plate 43.

[0028] The drive assembly 5 includes a telescopic airbag 51 and a torsion spring 52; the inner liner shell 2 is provided with a limiting base 6, the telescopic seat 4 is symmetrically provided with a first force-bearing part 41, the inner liner shell 2 is provided with a second force-bearing part 21 corresponding to each of the first force-bearing parts 41, the two ends of the torsion spring 52 act on the first force-bearing part 41 and the second force-bearing part 21 respectively, and the torsion spring 52 is also provided with a fulcrum 524 between the first force-bearing part 41 and the second force-bearing part 21, the first force-bearing part 41, the second force-bearing part 21 and the fulcrum 524 form a triangular force-bearing structure.

[0029] Specifically, the first force-bearing part 41 is symmetrically arranged on the side of the upright plate 43 away from the limiting base 6; one end of the torsion spring 52 is fixed to the first force-bearing part 41 to form a fixed end 521, and the other end rotates around the fulcrum 524 to form a movable end 522. The movable end 522 slides on the second force-bearing part 21 so that when the telescopic airbag 51 expands and pushes against the telescopic seat 4, it accumulates torsional elastic potential energy. The symmetrical arrangement of the torsion springs 52 on both sides can balance the lateral forces, effectively suppress the deflection of the telescopic seat 4 during the sliding process, and reduce the probability of jamming; by using the torsion energy storage of the torsion springs 52, elastic energy storage can be achieved in the limited space of the shell lining, reducing the space occupied by the mechanism along the telescopic direction, which is conducive to the compact layout in the inner shell 2.

[0030] The movable end 522 can adopt a point structure and slide with the upright plate 43; as a further preferred option, the movable end 522 is bent and extended to form a rod 523, which fits against the upright plate 43 and slides with the upright plate 43.

[0031] Of course, a sliding groove can also be provided on the upright plate 43 to allow the point structure or rod 523 to slide and engage. This modified structure is not shown separately in the accompanying drawings. Those skilled in the art can clearly understand the layout of this structure by referring to the foregoing description and the description of this embodiment, so no further drawings are provided.

[0032] In other embodiments, the fulcrum 524 can also be arranged in a movable manner. In this case, the two ends of the torsion spring 52 are fixedly connected to the first force-bearing part 41 and the second force-bearing part 21, respectively. When the telescopic airbag 51 inflates and pushes the telescopic seat 4 forward, the telescopic seat 4 causes the first force-bearing part 41 to shift relative to the second force-bearing part 21. The fulcrum 524 shifts position synchronously with the deformation of the torsion spring, changing the lever arm ratio of the triangular force-bearing structure, thereby realizing the adaptive change of the torsional torque of the torsion spring 52 with the stroke of the telescopic seat 4. This movable fulcrum arrangement scheme and the aforementioned fixed fulcrum scheme can be flexibly selected according to product space and force requirements, expanding the working condition adaptability range of the mechanism.

[0033] The limiting base 6 has a notch 61; the telescopic airbag 51 is equipped with an air nozzle 7 at the end away from the upright plate 43, and the air nozzle 7 is engaged with the notch 61 so that the telescopic airbag 51 and the limiting base 6 can be positioned and cooperated, simplifying the airbag assembly process; the telescopic airbag 51 acts between the limiting base 6 and the telescopic seat 4, and when the telescopic airbag 51 expands, it can continuously push the upright plate 43, with a short force transmission path and high transmission efficiency.

[0034] Both sides of the front slide block 42 are provided with sliding protrusions 421. The inner liner cover 23 has slots 231 that are adapted to the front slide block 42. Both sides of the slots 231 are provided with guide grooves 232 for the sliding protrusions 421 to slide. The sliding protrusions 421 and the guide grooves 232 cooperate to achieve relative sliding, which plays a limiting and guiding role for the telescopic seat 4, restricting the telescopic seat 4 to slide back and forth along the axial direction, effectively preventing the telescopic seat 4 from tilting, deviating and jamming, and ensuring the straightness of the telescopic movement.

[0035] In the inflated state, the telescopic airbag 51 pushes against the upright plate 43, causing the entire telescopic seat 4 to slide forward within the guide groove 232. The torsion spring 52 deforms and stores energy, and the finger airbag holding bag 3 extends forward synchronously with the telescopic seat 4, completing the pulling action on the finger, thereby loosening the finger joint and stretching the finger ligaments. When the telescopic airbag 51 deflates, the torsion spring 52 elastically returns to its original position, causing the telescopic seat 4 to return to its original position, and the finger airbag holding bag 3 to return to its initial position, realizing the finger relaxation and reset. The entire drive relies on pneumatics and the torsion spring 52, eliminating the need for motor gear transmission, resulting in low operating noise. The entire mechanism is housed inside the inner shell 2, making the structure compact and ensuring high safety in use.

[0036] The finger airbag holding bag 3 includes four independent finger airbags 31. Each finger airbag 31 is equipped with an air nozzle 7 on the side facing the front slide 42, which can realize independent ventilation control of each finger airbag 31. It can adjust the clamping pressure of different fingers separately, adapt to the differences in the thickness of each finger, and make the massage control more flexible and precise. The front slide 42 has a matching air nozzle through hole 422 for each air nozzle 7. The pipeline is arranged in a neat manner and the internal space is highly utilized.

[0037] Furthermore, the upper inner cover 22 and the lower inner cover 23 are joined together on both sides to form a thumb through hole 24 for the thumb to place, so as to realize the independent arrangement of the thumb; the upper inner cover 22 and the lower inner cover 23 are respectively provided with an upper airbag 8 and a lower airbag 9. The upper airbag 8 and the lower airbag 9 are each independently equipped with an air nozzle 7, which can apply pressure to the back of the hand and the palm respectively, so as to realize the overall wrapping massage of the palm.

[0038] Furthermore, the lower airbag 9 is symmetrically equipped with a thumb airbag 91 that can press the thumb. The thumb airbag 91 is correspondingly arranged at the thumb through hole 24, which can specifically perform squeezing massage on the thumb, combining the stretching massage of the other four fingers with thumb pressing physiotherapy, taking into account the massage needs of the palm, back of the hand and thumb, covering the entire hand area, and improving conditions such as hand stiffness and tendon sheath tightness.

[0039] Each of the air nozzles 7 is connected to the air pump 13 via the air valve 10, which can independently control the inflation and deflation of each airbag, enabling individual or combined operation of finger stretching, palm pressing, and thumb massage. The control logic is flexible and can meet different massage and rehabilitation needs.

[0040] The massager body 1 is equipped with a lithium battery 11 to power the air pump 13, allowing the entire unit to be used portablely without an external power source, free from the constraints of cables. A charging port 12 is located at the front of the body, which can charge the lithium battery 11, balancing the built-in battery life with the external power supply mode, thus enhancing the versatility of the product's usage scenarios. The entire pneumatic and power supply components are integrated into the massager body 1, with a simple layout that facilitates daily operation for users.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stretchable hand massager, comprising a massager body (1) and a finger stretching mechanism, wherein the massager body (1) includes an inner shell (2), and the finger stretching mechanism is located at the front end of the massager body (1) and disposed within the inner shell (2), characterized in that: The finger stretching mechanism includes a finger airbag clamping bag (3), a telescopic seat (4), and a drive assembly (5); The finger airbag holding bag (3) is assembled on the telescopic seat (4), and the telescopic seat (4) is slidably installed on the inner liner shell (2); the drive assembly (5) includes a telescopic airbag bag (51) and a torsion spring (52); The inner liner shell (2) is provided with a limiting base (6), and the telescopic airbag (51) acts between the limiting base (6) and the telescopic seat (4); The telescopic seat (4) is symmetrically provided with a first force-bearing part (41), and the inner liner shell (2) is provided with a second force-bearing part (21) in front of each first force-bearing part (41). The two ends of the torsion spring (52) act on the first force-bearing part (41) and the second force-bearing part (21) respectively. The torsion spring (52) is also provided with a fulcrum (524) between the first force-bearing part (41) and the second force-bearing part (21). The first force-bearing part (41), the second force-bearing part (21) and the fulcrum (524) form a triangular force-bearing structure. The telescopic airbag (51) inflates and pushes the telescopic seat (4), causing the finger airbag clamping bag (3) to extend forward and the torsion spring (52) to twist and deform to store elastic potential energy; the telescopic airbag (51) deflates and releases pressure, releasing elastic potential energy and resetting, causing the telescopic seat (4) and the finger airbag clamping bag (3) to reset backward.

2. The stretchable hand massager according to claim 1, characterized in that: The telescopic seat (4) includes a front slide (42), a vertical plate (43), and a connecting arm (44) disposed between the front slide (42) and the vertical plate (43); the first force-bearing part (41) is symmetrically disposed on the side of the vertical plate (43) away from the limiting base (6); the fulcrum (524) is fixedly disposed on the inner liner shell (2); one end of the torsion spring (52) is fixed to the first force-bearing part (41) to form a fixed end (521), and the other end rotates around the fulcrum (524) to form a movable end (522); the movable end (522) slides on the second force-bearing part (21) so that the telescopic airbag (51) expands and pushes the telescopic seat (4) to accumulate torsional elastic potential energy.

3. The stretchable hand massager according to claim 2, characterized in that: The movable end (522) is bent and extended to form a rod (523), which fits against the upright plate (43) and slides with the upright plate (43).

4. A stretchable hand massager according to claim 3, characterized in that: The inner liner shell (2) is integrally formed or fixedly assembled from the inner liner upper cover (22) and the inner liner lower cover (23); the finger stretching mechanism is located on the inner liner lower cover (23); sliding protrusions (421) are provided on both sides of the front slide (42); the inner liner lower cover (23) is provided with a slot (231) that matches the front slide (42); and guide grooves (232) are provided on both sides of the slot (231) for the sliding protrusions (421) to slide.

5. A stretchable hand massager according to claim 4, characterized in that: The limiting base (6) has a notch (61); the end of the telescopic airbag (51) away from the upright plate (43) is equipped with an air nozzle (7), which is engaged with the notch (61) so that the telescopic airbag (51) and the limiting base (6) can be positioned and cooperated; the finger airbag holding bag (3) contains four independent finger airbags (31), and each finger airbag (31) is individually equipped with an air nozzle (7) on the side facing the front slide (42). The front slide (42) is provided with a matching air nozzle through hole (422) corresponding to each air nozzle (7).

6. A stretchable hand massager according to claim 5, characterized in that: The upper inner cover (22) and the lower inner cover (23) are joined together on both sides to form a thumb through hole (24) for placing the thumb; the upper inner cover (22) and the lower inner cover (23) are respectively provided with an upper airbag (8) and a lower airbag (9), and the upper airbag (8) and the lower airbag (9) are each independently equipped with an air nozzle (7); the lower airbag (9) is symmetrically equipped with a thumb airbag (91) that can press the thumb, and the thumb airbag (91) is correspondingly arranged at the thumb through hole (24).

7. A stretchable hand massager according to claim 6, characterized in that: Each of the air nozzles (7) is connected to the air pump (13) through an air valve (10). The massager body (1) is also provided with a lithium battery (11) for powering the air pump (13). The front end of the massager body (1) is provided with a charging interface (12) for connecting to an external power source.

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