Air pump structure and massage instrument

Abstract

The utility model provides an air pump structure which comprises a pump body, the pump body comprises a flexible cylinder sleeve and a connecting rod piston, the flexible cylinder sleeve is provided with a cavity with two open ends, and the connecting rod piston is arranged in the cavity of the flexible cylinder sleeve; the driving assembly is fixedly connected with the outer end of the connecting rod piston, the driving assembly is used for pushing the connecting rod piston to do reciprocating motion in the cavity of the flexible cylinder sleeve so as to change the volume in the cavity and further generate positive and negative air pressure, and the pump body is provided with a sucking opening communicated with the cavity. The connecting rod piston is pushed out of the flexible cylinder sleeve to form positive pressure, the connecting rod piston retracts to form negative pressure, and therefore the sucking function of the air pump is achieved, and the massage effect is achieved by sucking the skin of the human body. And the connecting rod piston is directly connected with the driving assembly, the pump body does not need to be guided, abrasion generated in the operation process of the pump body is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric air pumps, in particular to an air pump structure and a massage device. Background Art

[0002] Air pump, also known as "air pump", is a device that exhausts air from a closed space or adds air from a closed space. Generally, the air pump drives the crankshaft through the rotation of the motor, and the crankshaft pushes the piston to achieve the function of inflating or exhausting air, or the motor drives the air pump through a transmission mechanism such as a belt or gear.

[0003] At present, some massage devices use air pumps to assist. The air pump drives the massage components to operate and perform sucking massage on the designated position of the skin. The air pump structure usually includes a driving mechanism, a piston rod and a pump body. A sealing groove is set on the piston, and a sealing ring is set in the groove to prevent gas or liquid leakage when the piston reciprocates in the cylinder. However, the sealing ring usually requires a certain amount of interference to ensure the sealing effect. Too much interference may increase the resistance and affect the movement performance of the piston; insufficient interference may lead to poor sealing; and when the piston rod operates for a long time, the sliding friction between the piston rod and the sealing ring causes wear, and the interference between the sealing ring and the pump body changes, thereby affecting the sealing performance and causing the problem of easy leakage.

[0004] In view of this, it is indeed necessary to provide a technical solution to the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an air pump structure to solve the problem that the piston rod of the air pump structure of the above-mentioned massage device wears out between the piston rod and the pump body after long-term use, resulting in changes in the interference fit, which may lead to poor sealing performance and easy leakage.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An air pump structure, comprising:

[0008] A pump body, the pump body comprising a flexible cylinder sleeve and a connecting rod piston, the flexible cylinder sleeve having a cavity with two ends open, the connecting rod piston being arranged in the cavity of the flexible cylinder sleeve, and a bone position ring being arranged in the cavity;

[0009] A driving assembly, the driving assembly is fixedly connected to the outer end of the connecting rod piston, and the driving assembly is used to push the connecting rod piston to reciprocate in the cavity of the flexible cylinder sleeve, so as to change the volume of the cavity and generate positive and negative air pressure;

[0010] Wherein, the pump body has a suction port connected to the cavity. When the suction port is extended to contact the human body, the connecting rod piston is pushed out in the flexible cylinder sleeve to form positive pressure, and the connecting rod piston retracts to form negative pressure to complete the sucking process on the human skin.

[0011] As an improvement to the air pump structure, the suction port is provided with a suction nozzle, and the pump body and the suction nozzle are detachably fixedly connected.

[0012] As an improvement to the air pump structure, the pump body includes a fixed sleeve, the flexible cylinder sleeve is installed in the fixed sleeve, the fixed sleeve has a convex portion, the outer portion of the suction nozzle is at least partially recessed to form a groove, the convex portion is snapped into the groove to form a snap fit to fix the suction nozzle inserted into the fixed sleeve.

[0013] As an improvement to the air pump structure, the convex portion and the concave portion are both annular.

[0014] As an improvement to the air pump structure, the edge of the end of the suction nozzle for inserting into one side of the fixing sleeve is provided with an angle to form a slope.

[0015] As an improvement to the air pump structure, the connecting rod piston includes a piston column and a connecting rod, the piston column is installed in the flexible cylinder sleeve, one end of the connecting rod is detachably connected to the piston column, and the other end of the connecting rod is connected to the driving assembly.

[0016] As an improvement of the air pump structure, the driving assembly includes a mounting frame, and winding frames are provided on opposite sides of the mounting frame, and coils are wound on the winding frames. The connecting rod is located between the winding frames on both sides and is slidably connected to the winding frames on both sides. The connecting rod has a mounting groove, and a magnet is installed in the mounting groove. The magnet includes a first magnetic part and a second magnetic part, and the magnetic poles of the first magnetic part and the second magnetic part are opposite.

[0017] As an improvement to the air pump structure, the winding frames are each provided with a fixing hole for a fixing pin to pass through to fix the winding frame in a pre-installed position.

[0018] As an improvement of the air pump structure, the driving assembly includes a motor, an eccentric wheel, a fixed rod and a transmission shaft. The eccentric wheel is arranged at the output end of the motor, the fixed rod is arranged at an eccentric position of the eccentric wheel, and the two ends of the transmission shaft are rotatably connected to the fixed rod and the connecting rod respectively.

[0019] A massage device comprises an air pump for driving the massage device to operate, wherein the air pump is the above-mentioned air pump structure.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The utility model realizes the function of an air pump by pushing out a connecting rod piston in a flexible cylinder sleeve to form positive pressure and retracting the connecting rod piston to form negative pressure, thereby sucking the human skin to achieve a massage effect. In addition, the cylinder sleeve that cooperates with the connecting rod piston is set to be flexible, and the flexible cylinder sleeve can adapt to the movement and deformation of the connecting rod piston to a certain extent, ensuring good sealing between the piston and the cylinder sleeve, reducing air leakage, improving the working efficiency of the engine, and preventing the liquid in the cavity from penetrating toward the driving component through the gap between the piston and the flexible cylinder sleeve, thereby improving the waterproof performance; in addition, the flexible material can buffer the impact between the connecting rod piston and the inner wall of the cavity, reduce wear, and extend the service life. In particular, at the moment when the connecting rod piston moves and stops moving, the flexible cylinder sleeve can significantly reduce the damage to the inner wall of the cavity caused by the impact.

[0022] Since both ends of the connecting rod piston are directly connected to the driving assembly and the flexible cylinder sleeve, there is no need to fix and guide the connecting rod piston, which reduces the wear of the pump body during operation and increases its service life.

[0023] In addition, the suction nozzle is in contact with the designated object. Due to its small size, it can suck and massage the designated position more accurately, which also improves the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 This is one of the three-dimensional structural schematic diagrams of an air pump structure provided by the utility model.

[0026] Figure 2 This is one of the partial three-dimensional structural schematic diagrams of an air pump structure provided by the utility model.

[0027] Figure 3 The utility model is a cross-sectional view of an air pump structure provided by the utility model.

[0028] Figure 4 This is a second partial three-dimensional structural schematic diagram of an air pump structure provided by the utility model.

[0029] Figure 5 This is a third partial three-dimensional structural schematic diagram of an air pump structure provided by the utility model.

[0030] Figure 6This is one of the three-dimensional structural schematic diagrams of a driving component of an air pump structure provided by the utility model.

[0031] Figure 7 The second three-dimensional structural schematic diagram of a driving component of an air pump structure provided by the utility model.

[0032] In the figure: 1 pump body; 11 connecting rod piston; 111 connecting rod; 112 piston column; 12 flexible cylinder sleeve; 121 cavity; 122, bone ring; 13 fixing sleeve; 131 convex part; 2 suction nozzle; 21 groove; 22 inclined surface; 3, driving assembly; 311, mounting frame; 312, winding frame, 313, first magnetic part; 314, second magnetic part; 315, mounting groove; 321, motor; 322, eccentric wheel; 323, fixing rod; 324, transmission shaft. DETAILED DESCRIPTION

[0033] In order to make the technical solution and advantages of the utility model clearer, the utility model and its beneficial effects will be further described in detail below in combination with specific implementation methods and drawings of the specification, but the implementation methods of the utility model are not limited thereto.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0036] like Figures 1 to 3As shown, an air pump structure comprises: a pump body 1, the pump body 1 comprises a flexible cylinder sleeve 12 and a connecting rod piston 11, the flexible cylinder sleeve 12 has a cavity 121 with two ends open, the connecting rod piston 11 is arranged in the cavity 121 of the flexible cylinder sleeve 12, and a bone position 122 is arranged in the cavity 121; a driving component 3, the driving component 3 is fixedly connected to the outer end of the connecting rod piston 11, the driving component 3 is used to push the connecting rod piston 11 to reciprocate in the cavity 121 of the flexible cylinder sleeve 12, so as to change the internal volume of the cavity 121 and then generate positive and negative air pressure; wherein, the pump body 1 has a sucking port connected to the cavity 121, when the sucking port is extended to contact the human body, the connecting rod piston 11 is pushed out in the flexible cylinder sleeve 12 to form a positive pressure, and the connecting rod piston 11 retracts to form a negative pressure to complete the sucking process on the human skin.

[0037] Specifically, the connecting rod piston 11 slides in the cavity 121 and is located on the left side of the flexible cylinder sleeve 12. The suction port 2 is located on the right side of the flexible cylinder sleeve 12 and is connected to the cavity 121 of the flexible cylinder sleeve 12. When the air pump needs to be started, the driving component 3 is started to operate, driving the connecting rod piston 11 to make a linear reciprocating motion to cooperate with the flexible cylinder sleeve 12, changing the internal air pressure of the cavity 121, and causing the internal air pressure of the cavity 121 to increase and decrease repeatedly. Specifically, the connecting rod piston 11 is pushed out of the flexible cylinder sleeve 12 to form a positive pressure, and the connecting rod piston 11 is retracted to form a negative pressure, thereby realizing the function of the air pump, sucking the human skin to achieve a massage effect, and during operation, the flexible cylinder sleeve 12 does not need to generate positive and negative pressures through soft deformation, thereby avoiding the noise generated by soft deformation. In addition, since the two ends of the connecting rod piston 11 are directly connected to the driving component 3 and the flexible cylinder sleeve 12, it is not necessary to guide the connecting rod piston 11, thereby reducing the wear of the pump body 1 during operation and improving the service life.

[0038] In addition, the cylinder sleeve that matches the connecting rod piston 11 is set to be flexible. The flexible cylinder sleeve 12 can adapt to the movement and deformation of the connecting rod piston 11 to a certain extent, ensuring good sealing between the piston and the cylinder sleeve, reducing air leakage, and improving the working efficiency of the engine. At the same time, the flexible material can buffer the impact between the connecting rod piston 11 and the inner wall of the cavity 121, reduce wear and extend the service life. Especially at the moment when the connecting rod piston 11 moves and stops moving, the flexible cylinder sleeve 12 can significantly reduce the damage to the inner wall of the cavity 121 caused by the impact. The cavity 121 of the flexible cylinder sleeve 12 in the air pump structure is opened at one end, which is different from the traditional semi-enclosed piston structure, and is more convenient for direct cleaning of the cavity 121.

[0039] The utility model adds a bone ring 122 to wrap the connecting rod piston 11 in the cavity 121 of the flexible cylinder sleeve 12. Through the cooperation between the flexible cylinder sleeve 12 and the bone ring 122, a more uniform sealing pressure distribution can be achieved, thereby improving the sealing effect. The shrinkage of the flexible cylinder sleeve 12 can compensate for the resistance caused by the increase in the interference, avoid the phenomenon of poor sealing due to insufficient interference, and improve the waterproof performance.

[0040] In some embodiments of the present application, the suction port is provided with a suction nozzle 2, and the pump body 1 and the suction nozzle 2 are detachably fixedly connected. Specifically, the suction nozzle 2 contacts the designated object, and because the suction nozzle 2 is small in size, the designated position can be sucked and massaged more accurately, and the flexibility of use is also improved. The detachable design of the suction nozzle 2 makes the air pump structure more flexible and can adapt to the needs of different scenarios and uses. For example, by replacing different types of suction nozzles 2, the air pump can be used for sucking operations on different skin types and different parts, and even extended to other non-human contact application fields; the detachable suction nozzle 2 is easy to clean and disinfect, especially when it needs to directly contact human skin, this feature is particularly important. Regularly replacing or cleaning the suction nozzle 2 can effectively prevent bacterial growth and ensure safety in use. Due to the detachable replacement of the suction nozzle 2, the suction nozzle 2 of different materials, shapes and sizes can be customized according to the needs of different users to meet the personalized needs of users. This flexibility makes the application range of the air pump wider and can adapt to more diverse market needs. And when the air pump needs to be stored or transported, the detachable suction nozzle 2 can be stored separately, reducing the overall volume and weight, and is easy to carry and carry. The detachable suction nozzle 2 is designed so that when the suction nozzle 2 is damaged or worn, it can be replaced separately without replacing the entire air pump, thereby reducing maintenance costs and extending the service life of the air pump.

[0041] In some embodiments of the present application, the pump body 1 includes a fixed sleeve 13, the flexible cylinder sleeve 12 is installed in the fixed sleeve 13, the fixed sleeve 13 has a convex portion 131, the outside of the suction nozzle 2 is at least partially recessed to form a groove 21, and the convex portion 131 is snapped into the groove 21 to form a snap fit to fix the suction nozzle 2 inserted into the fixed sleeve 13. Specifically, the cavity 121 of the flexible cylinder sleeve 12 is connected to the inner side of the suction nozzle 2 through the fixed sleeve 13; the snap fit mode of the groove 21 and the convex portion 131 enables the suction nozzle 2 to be conveniently and quickly installed on the fixed sleeve 13, and similarly, the disassembly is also very simple. This design is convenient for users to replace or clean the suction nozzle 2 as needed. The suction nozzle 2 is fixed by snap fit, which improves the efficiency of disassembly and assembly, and ensures that the suction nozzle 2 will not accidentally fall off or shift during use, thereby ensuring the safety and reliability of use. The detachable suction nozzle 2 design allows the suction nozzle 2 to be replaced separately when it is damaged or worn, without replacing the entire air pump, thereby reducing the maintenance cost and extending the service life of the air pump.

[0042] In some embodiments of the present application, the convex portion 131 and the groove 21 are both annular. Specifically, the convex portion 131 and the groove 21 are both annular, and the annular convex portion 131 and the annular groove 21 are snap-fitted to ensure good sealing between the suction nozzle 2 and the fixing sleeve 13, preventing air leakage during the operation of the air pump, thereby ensuring the working efficiency and stability of the air pump.

[0043] In some embodiments of the present application, the end edge of the suction nozzle 2 used to insert into one side of the fixed sleeve 13 is provided with a bevel, forming a bevel 22. Specifically, the left edge of the suction nozzle 2 adopts a bevel 22 transition design, which makes the suction nozzle 2 smoother when inserted into the fixed sleeve 13, reduces the insertion difficulty or discomfort caused by the edge being too sharp or abrupt, and thus improves the overall user experience. The design of the bevel 22 transition can make the contact between the suction nozzle 2 and the fixed sleeve 13 closer, reduce the gap, and thus enhance the sealing between the suction nozzle 2 and the fixed sleeve 13. In addition, it also has the effect of being easier to clean, reducing the hygiene problems caused by dirt and grime on the edge of the suction nozzle 2.

[0044] In some embodiments of the present application, the connecting rod piston 11 includes a piston column 112 and a connecting rod 111. The piston column 112 is installed in the flexible cylinder sleeve 12. One end of the connecting rod 111 is detachably connected to the piston column 112, and the other end of the connecting rod 111 is connected to the driving assembly 3. Specifically, when the driving assembly 3 starts to work, it transmits power to the piston column 112 through the connecting rod 111, driving the piston column 112 to reciprocate in the flexible cylinder sleeve 12. Since the connecting rod 111 and the piston column 112 are detachably connected, this design is not only convenient for maintenance and replacement, but also can ensure the stability of the connection and the accuracy of the power transmission. The setting of the direct connection between the driving assembly 3 and the piston column 112 through the connecting rod 111 does not use another transmission mechanism, which ensures the efficient transmission of power from the driving assembly 3 to the piston column 112, so that the working efficiency of the air pump is improved.

[0045] like Figure 4 and Figure 5As shown, in some embodiments of the present application, the driving assembly 3 includes a mounting frame 311, and winding frames are provided on both sides of the mounting frame 311. Coils are wound on the winding frames. The connecting rod 111 is located between the winding frames on both sides and is slidably connected to the winding frames on both sides. The connecting rod 111 has a mounting slot 315, and a magnet is installed in the mounting slot 315. The magnet includes a first magnetic part 313 and a second magnetic part 314, and the magnetic poles of the first magnetic part 313 and the second magnetic part 314 are opposite. Specifically, when the coil is energized, according to the principle of electromagnetic induction, a magnetic field will be generated around the winding frame. This magnetic field will interact with the magnet on the connecting rod 111, so that the connecting rod 111 is subjected to electromagnetic force and moves. Since the magnetic poles of the first magnetic part 313 and the second magnetic part 314 are opposite, when the current direction of the coil changes, the direction of the generated magnetic field will also change, thereby causing the direction of the electromagnetic force on the magnet on the connecting rod 111 to change, thereby realizing the reciprocating motion of the connecting rod 111. The other end of the connecting rod 111 is detachably connected to the piston column 112, so the reciprocating motion of the connecting rod 111 can drive the piston column 112 to reciprocate in the flexible cylinder sleeve 12, thereby completing the air pump's suction and exhaust process. Through electromagnetic induction and magnetic pole switching, the drive component 3 of this air pump structure can efficiently convert electrical energy into mechanical energy and transmit it to the connecting rod 111 and the piston column 112 to achieve continuous operation of the air pump; compared with the traditional mechanical drive method, the electromagnetic drive method has higher energy conversion efficiency and lower energy consumption, while reducing noise and pollutant emissions. And because the direction and size of the current can be precisely controlled, it is possible to achieve precise control of the movement of the connecting rod 111 and the piston column 112, thereby meeting different work requirements.

[0046] In some embodiments of the present application, the winding frame is provided with a fixing hole for a fixing pin to pass through and fix the winding frame to a pre-installed position. Specifically, when the air pump needs to be installed in the pre-installed position, the air pump is fixed by passing the fixing pin through the fixing hole. In other embodiments, the winding frame has two fixing holes. The number of fixing holes can be modified and adjusted according to needs.

[0047] like Figure 6 and Figure 7As shown, in some embodiments of the present application, the drive assembly 3 includes a motor 321, an eccentric wheel 322, a fixed rod 323 and a transmission shaft 324, wherein the eccentric wheel 322 is arranged at the output end of the motor 321, the fixed rod 323 is arranged at the eccentric position of the eccentric wheel 322, and the two ends of the transmission shaft 324 are respectively connected to the fixed rod 323 and the connecting rod 111 for rotation. Specifically, when the motor 321 starts to work, it drives the eccentric wheel 322 to rotate, and the fixed rod 323 is located at the eccentric position of the eccentric wheel 322. When the eccentric wheel 322 rotates, the fixed rod 323 will perform a circular motion. The motion of the fixed rod 323 is transmitted to the connecting rod 111 through the transmission shaft 324, and the two ends of the transmission shaft 324 are respectively connected to the fixed rod 323 and the connecting rod 111 for rotation, so that the motion of the fixed rod 323 is converted into the reciprocating motion of the connecting rod 111, thereby driving the piston rod to move linearly back and forth. Since the fixing rod 323 is located at the eccentric position of the eccentric wheel 322, the movement trajectory and speed of the connecting rod 111 and the piston rod 112 can be controlled by adjusting the position of the fixing rod 323 and the rotation speed of the eccentric wheel 322, thereby realizing accurate control of the air pump suction and exhaust process. The driving assembly 3 adopts a combination of the motor 321, the eccentric wheel 322, the fixing rod 323 and the transmission shaft 324, and has a compact structure and occupies a small space.

[0048] A massage device includes an air pump for driving the massage device, and the air pump is the above-mentioned air pump structure. Specifically, the suction nozzle 2 is the massage body of the massage device, and the suction nozzle 2 contacts the human skin. The driving component 3 drives the connecting rod piston 11 to move back and forth, and cooperates with the flexible cylinder sleeve 12 to realize the sucking movement, so as to achieve the effect of sucking and massaging the skin, and the suction nozzle 2 is exposed outside the massage device, and is detachably connected. By replacing different types of suction nozzles 2, the air pump can be used for different skin types.

[0049] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. An air pump structure, characterized in that: include: A pump body, the pump body comprising a flexible cylinder sleeve and a connecting rod piston, the flexible cylinder sleeve having a cavity with two ends open, the connecting rod piston being arranged in the cavity of the flexible cylinder sleeve, and a bone position ring being arranged in the cavity; A driving assembly, the driving assembly is fixedly connected to the outer end of the connecting rod piston, and the driving assembly is used to push the connecting rod piston to reciprocate in the cavity of the flexible cylinder sleeve, so as to change the volume of the cavity and generate positive and negative air pressure; Wherein, the pump body has a suction port connected to the cavity. When the suction port contacts the human body, the connecting rod piston is pushed out in the flexible cylinder sleeve to form positive pressure, and the connecting rod piston retracts to form negative pressure to complete the sucking process on the human skin.

2. An air pump structure according to claim 1, characterized in that: The suction port is provided with a suction nozzle, and the pump body and the suction nozzle are detachably fixedly connected.

3. An air pump structure according to claim 2, characterized in that: The pump body includes a fixing sleeve, the flexible cylinder sleeve is installed in the fixing sleeve, the fixing sleeve has a convex portion, the outer portion of the suction nozzle is at least partially recessed to form a groove, the convex portion is snapped into the groove to form a snap fit to fix the suction nozzle inserted into the fixing sleeve.

4. An air pump structure according to claim 3, characterized in that: The protrusion and the groove are both annular.

5. An air pump structure according to claim 4, characterized in that: The end edge of the suction nozzle for inserting into one side of the fixing sleeve is provided with a bevel to form a slope.

6. An air pump structure according to claim 5, characterized in that: The connecting rod piston comprises a piston column and a connecting rod. The piston column is installed in the flexible cylinder sleeve. One end of the connecting rod is detachably connected to the piston column, and the other end of the connecting rod is connected to the driving assembly.

7. An air pump structure according to claim 6, characterized in that: The driving assembly includes a mounting frame, and winding frames are provided on opposite sides of the mounting frame. Coils are wound on the winding frames. The connecting rod is located between the winding frames on both sides and is slidably connected to the winding frames on both sides. The connecting rod has a mounting groove, and a magnet is installed in the mounting groove. The magnet includes a first magnetic part and a second magnetic part, and the magnetic poles of the first magnetic part and the second magnetic part are opposite.

8. An air pump structure according to claim 7, characterized in that: The winding frames are all provided with fixing holes for allowing fixing pins to pass through and fix the winding frames at the pre-installation position.

9. An air pump structure according to claim 6, characterized in that: The driving assembly includes a motor, an eccentric wheel, a fixed rod and a transmission shaft. The eccentric wheel is arranged at the output end of the motor, the fixed rod is arranged at the eccentric position of the eccentric wheel, and both ends of the transmission shaft are rotatably connected to the fixed rod and the connecting rod respectively.

10. A massage device, characterized in that: It comprises an air pump for driving the massage device to operate, and the air pump is the air pump structure described in any one of claims 1 to 9.

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