Shoulder and neck massager

By combining an eccentric wheel and a limiting structure with a transmission mechanism consisting of a worm gear pair and a gear pair, a simple shoulder and neck massager was designed. This solves the problems of complex structure and poor massage effect of traditional shoulder and neck massagers, and achieves high flexibility, diverse massage effects, and reduced production costs.

CN223516608UActive Publication Date: 2025-11-07ZHONGSHAN QIKU ELECTRONICS TECH CO LTD
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Patent Information

Application Number
CN202422159339.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-03
Publication Date
2025-11-07
Estimated Expiration
2034-09-03

AI Technical Summary

Technical Problem

Traditional neck and shoulder massagers are complex in structure, expensive, have a high failure rate, are noisy, consume a lot of energy, are not flexible, are bulky and difficult to maintain, and are difficult to perform complex massage movements.

Method used

It adopts a simple mechanical structure design, using an eccentric wheel and a limiting structure combined with a worm gear pair and a gear pair transmission mechanism, and realizes the complex movement of the shoulder and neck massage components through motor drive. Combined with the adjustable angle and tilt surface design, it realizes multi-dimensional massage movements.

Benefits of technology

It achieves a simple structure, high flexibility, and diverse massage effects, providing a comprehensive and comfortable shoulder and neck massage experience, reducing production costs and failure rates, and improving equipment reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a shoulder and neck massager which comprises a seat body, two shoulder massage assemblies and two neck massage assemblies are movably connected to the seat body, a driver is arranged in the seat body, and a transmission mechanism is arranged among the driver, the shoulder massage assemblies and the neck massage assemblies. The shoulder massage assembly comprises a first main shaft, a first eccentric wheel is rotationally connected to the first main shaft, the axis of the first eccentric wheel and the axis of the first main shaft intersect, the included angle is A, a first massage arm is arranged on the first eccentric wheel, and a first limiting structure is arranged between the first massage arm and the seat body. The neck massage assembly comprises a second main shaft, a second eccentric wheel is rotationally connected to the second main shaft, the axis of the second eccentric wheel and the axis of the second main shaft intersect, the included angle is B, a second massage arm is arranged on the second eccentric wheel, and a second limiting structure is arranged between the second massage arm and the seat body. The device has the advantages of being simpler, more flexible and more efficient.
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Description

TECHNICAL FIELD

[0001] The utility model relates to massager technical field especially, it relates to a shoulder and neck massager. BACKGROUND

[0002] The shoulder and neck massager is a kind of health equipment widely used in family, office and health center, and its main function is to massage trapezius and back area of human body simultaneously to relieve muscle tension and fatigue caused by long time work or bad posture.

[0003] Traditional shoulder and neck massager usually adopts mechanical structure to simulate the effect of hand massage. In order to realize relatively complex massage movement, such as kneading, knocking, pushing and so on, the structure of conventional shoulder and neck massager is often relatively complex. This complex structure design has problems such as high manufacturing cost, high failure rate, large noise, high energy consumption, poor flexibility, large volume and difficult maintenance.

[0004] Therefore, it is necessary to further improve and perfect the prior art to overcome these deficiencies, and the utility model is made based on this situation. CONTENT OF UTILITY MODEL

[0005] The utility model aims at overcoming the deficiencies of prior art, and provides a kind of more simple, more flexible, more efficient shoulder and neck massager.

[0006] The utility model is realized by the following technical solutions:

[0007] To solve the above technical problems, the utility model provides a kind of shoulder and neck massager, including seat body, two shoulder parts massage components and two neck parts massage components are movably connected on the seat body, drive is equipped in the seat body, and transmission mechanism is equipped between drive and shoulder part massage component, neck part massage component;

[0008] The shoulder part massage component includes the first main shaft that rotates and connects on seat body, the first eccentric wheel is rotatively connected on the first main shaft, the axis of the first eccentric wheel and the axis of the first main shaft intersect and the included angle is A, the first massage arm that extends along front and back direction is equipped on the first eccentric wheel, and the first limiting structure for limiting the swing of first massage arm in front and back direction is equipped between first massage arm and seat body;

[0009] The neck part massage component includes the second main shaft that rotates and connects on seat body, the second eccentric wheel is rotatively connected on the second main shaft, the axis of the second eccentric wheel and the axis of the second main shaft intersect and the included angle is B, the second massage arm that extends along left and right direction is equipped on the second eccentric wheel, and the second limiting structure for limiting the swing of second massage arm in left and right direction is equipped between second massage arm and seat body.

[0010] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of shoulder and neck massager, the driver is motor, the transmission mechanism includes the worm gear pair being arranged on the output shaft of driver, and the gear pair being arranged between worm gear pair and first main shaft, second main shaft.

[0011] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of shoulder and neck massager, first main shaft is equipped with first direction-changing connecting shaft, first direction-changing connecting shaft includes first upper half and first lower half, first upper half is coaxial with first main shaft, first lower half is coaxial with first eccentric wheel, and first eccentric wheel is sleeved on first lower half and is rotationally connected with it;The upper end surface of first upper half is first inclined surface with the included angle A of the cross section of first eccentric wheel, and the lower surface of seat body is contacted with first inclined surface.

[0012] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of shoulder and neck massager, second main shaft is equipped with second direction-changing connecting shaft, second direction-changing connecting shaft includes second upper half and second lower half, second upper half is coaxial with second main shaft, second lower half is coaxial with second eccentric wheel, and second eccentric wheel is sleeved on second lower half and is rotationally connected with it;The upper end surface of second upper half is second inclined surface with the included angle B of the cross section of second eccentric wheel, and the lower surface of seat body is contacted with second inclined surface.

[0013] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of shoulder and neck massager, first limiting structure includes the limiting block being arranged at the bottom of seat body, first limiting groove is arranged on the limiting block and extends along vertical direction and opens to back, the outer side of first eccentric wheel is equipped with the first protrusion extending to front, and the first protrusion is inserted into corresponding first limiting groove and can swing up and down in first limiting groove.

[0014] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of shoulder and neck massager, the width C of first protrusion is less than the width D of first limiting groove.

[0015] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of shoulder and neck massager, second limiting structure includes the limiting block being arranged at the bottom of seat body, second limiting groove is arranged on the limiting block and extends along vertical direction and opens to front, the outer side of second eccentric wheel is equipped with the second protrusion extending to back, and the second protrusion is inserted into corresponding second limiting groove and can swing up and down in second limiting groove.

[0016] In order to further solve the technical problems to be solved by the utility model, the utility model provides a shoulder and neck massager, the width E of the second protrusion is less than the width F of the second limiting groove.

[0017] In order to further solve the technical problems to be solved by the utility model, the utility model provides a shoulder and neck massager, the inner side wall of the first eccentric wheel is equipped with a plurality of first slot, the inner side wall of the second eccentric wheel is equipped with a plurality of second slot.

[0018] In order to further solve the technical problems to be solved by the utility model, the utility model provides a shoulder and neck massager, the first massage arm is equipped with fixed massage head, the second massage arm is rotatably connected with one or more massage rollers.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The shoulder and neck massager of the utility model not only simple structure, but also realizes complex massage movement through simple mechanical structure, has high flexibility and diversified massage effect, can provide comprehensive, comfortable shoulder and neck massage experience for user. BRIEF DESCRIPTION OF DRAWINGS

[0021] The specific embodiment of the utility model will be further explained in detail below in combination with the drawings, wherein:

[0022] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0023] Figure 2 It is the explosion schematic diagram of the utility model;

[0024] Figure 3 It is the side view (part of shell is not shown) of the utility model;

[0025] Figure 4 It is the front view (part of shell is not shown) of the utility model;

[0026] Figure 5 It is the three-dimensional structure schematic diagram of the limiting block;

[0027] Figure 6 It is the exploded schematic diagram of the shoulder massage subassembly;

[0028] Figure 7 It is the exploded schematic diagram of the neck massage subassembly. DETAILED DESCRIPTION

[0029] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model will be further explained in detail below in combination with the drawings and specific embodiment.

[0030] Please refer to Figures 1 to 7 The utility model discloses a simple structure, high flexibility's shoulder and neck massager. The massager mainly includes seat body 1, two shoulder massage subassembly 2, two neck massage subassembly 3, driver 4 and transmission mechanism 5. Neck massage subassembly 3 massages trapezius mainly, and shoulder massage subassembly 2 massages back mainly.

[0031] Seat body 1 is the basic structure of whole massager, provides support and installation space for other components. Driver 4 is installed in seat body 1, and power is provided for shoulder massage subassembly 2 and neck massage subassembly 3 through transmission mechanism 5. Seat body 1 is designed with corresponding mounting groove or fixed structure inside to facilitate the installation and fixation of driver 4.

[0032] Further, the driver 4 is a motor (preferably a motor that can be forward and reverse, adjustable speed), the transmission mechanism 5 includes a worm and gear pair 51 (including a worm on the motor output shaft and two worm gears rotatably connected to the base 1) provided on the output shaft of the driver 4, and a plurality of gear pairs 52 (in fact, a gear set, including a plurality of intermeshing gears) provided between the worm and gear pair 51 and the first spindle 21 (mentioned later), the second spindle 31 (mentioned later). This transmission mode not only can effectively transmit power, so that the shoulder massage subassembly and the neck massage subassembly can realize different motion modes, but also can realize speed adjustment and motion direction change. In addition, this transmission mechanism only needs one power source (motor), which is simple in structure and low in cost. The design of a single power source simplifies the control system, reduces the possible failure points, and improves the reliability of the equipment. At the same time, since the number of components is small, the complexity of production and assembly is also reduced, which is conducive to reducing production cost and improving production efficiency. This design also leaves room for possible future functional expansion (such as adding new massage parts), which only needs to add new transmission branches based on the existing transmission system.

[0033] The shoulder massage subassembly 2 has the following specific structure:

[0034] The shoulder massage subassembly 2 includes a first spindle 21 rotatably connected to the seat body 1. Of course, the first spindle 21 can be connected to the seat body 1 through a bearing. A first eccentric wheel 22 is rotatably connected to the first spindle 21. The axis of the first eccentric wheel 22 intersects the axis of the first spindle 21 at an angle A. This design is the key to achieving complex massage movements. The existence of the angle A allows the first eccentric wheel 22 to produce spatial motion when rotating, thereby driving the first massage arm 23 to perform multi-dimensional massage movements. A first massage arm 23 is provided on the first eccentric wheel 22 (preferably, the first eccentric wheel 22 and the first massage arm 23 are integrally connected).

[0035] The first massage arm 23 extends in the front-rear direction and can massage the back position in the front-rear direction.

[0036] This design enables the first eccentric wheel 22 to drive the first massage arm 23 to produce complex spatial motion when the first main shaft 21 rotates, thus achieving more comprehensive and effective massage effect. Specifically, the end point of the first massage arm 23 will trace an elliptical ring-like trajectory (which is similar to an elliptical ring with the middle part concave), which can simulate the multi-directional kneading action of a human hand.

[0037] The size of the included angle A can be designed and selected as needed, for example, it can be selected between 5° and 30° to obtain the best massage effect. A smaller included angle A will produce a more concentrated massage effect, which is suitable for targeted massage; a larger included angle A will produce a wider range of massage effect, which is suitable for overall relaxation. Several product models with different included angles can be designed according to different massage needs, or a mechanism with adjustable included angle can be designed to meet the needs of different users.

[0038] More specifically, the first main shaft 21 is fixedly connected with a first direction-changing connecting shaft 24. The first direction-changing connecting shaft 24 is fixedly connected with the first main shaft 21 and rotates synchronously with the first main shaft 21. The first direction-changing connecting shaft 24 includes a first upper half 241 and a first lower half 242. This segmented design is the key to achieving eccentric motion. The first upper half 241 and the first lower half 242 can be integrally formed or separately manufactured and then connected together by welding or other fixing methods. The first upper half 241 is coaxial with the first main shaft 21, which ensures that the first direction-changing connecting shaft 24 can rotate synchronously with the first main shaft 21. The first lower half 242 is coaxial with the first eccentric wheel 22, and the first eccentric wheel 22 is sleeved on the first lower half 242 and is rotationally connected therewith. This design enables the first eccentric wheel 22 to rotate freely on the first lower half 242 while also performing spatial motion with the first direction-changing connecting shaft 24.

[0039] The upper end surface of the first upper half 241 is a first inclined surface 2411 that forms an included angle A with the cross section of the first eccentric wheel 22, and the first inclined surface 2411 is in contact with the lower surface of the seat body 1. The lower surface of the seat body 1 is a flat surface, and the first inclined surface 2411 tightly abuts the lower surface of the seat body 1 when the first main shaft 21 and the first direction-changing connecting shaft 24 rotate, causing the rotation axis of the first eccentric wheel 22 to be inclined to the first main shaft 21. This design utilizes geometric relationships to achieve complex motion through a simple structure, greatly improving the flexibility and massage effect of the massager. Specifically, when the first main shaft 21 rotates, the first inclined surface 2411 rotates along the lower surface of the seat body 1, and this rotational motion causes the axis of the first lower half 242 to trace a conical surface, thereby driving the first eccentric wheel 22 and the first massage arm 23 to perform complex spatial motion.

[0040] More specifically, a first limiting structure (described later) is provided between the first massage arm 23 and the seat body 1. The first massage arm 23 is limited in the front-back direction by the first limiting structure, ensuring the accuracy and pertinence of the massage action. The design of the first limiting structure not only limits the movement range of the first massage arm 23, but also serves as support and guidance, making the massage action more stable and controllable. This limiting design can prevent unnecessary lateral movement of the massage arm, thereby avoiding discomfort or injury to the user.

[0041] Further, the first limiting structure includes a limiting block 6 provided at the bottom of the seat body 1. The limiting block 6 can be installed at the bottom of the seat body 1 by screws, buckles or other fixing methods, facilitating maintenance and replacement. The limiting block 6 is provided with a first limiting groove 61 extending vertically and having an opening facing backward. The outer side of the first eccentric wheel 22 is provided with a first protrusion 221 extending forward, which is inserted into the corresponding first limiting groove 61 and can swing up and down in the first limiting groove 61. The first protrusion 221 can be integrally formed with the first eccentric wheel 22 or separately manufactured and fixed on the first eccentric wheel 22. The length of the first protrusion 221 should be slightly smaller than the depth of the first limiting groove 61 to ensure its free movement in the groove.

[0042] Further, the width C of the first protrusion 221 is smaller than the width D of the first limiting groove 61, leaving a margin between them. The purpose of this design is to allow the first protrusion 221 to have a certain lateral movement space in the first limiting groove 61. In this way, the first protrusion 221 can not only swing up and down in the first limiting groove 61, but also tilt at a certain angle, that is, the swinging track of the end of the first massage arm 23 is actually an elliptical ring, rather than a simple linear swing. This design increases the diversity of the massage action and can provide a more comprehensive massage effect. The elliptical swinging track can simulate the kneading action of a human hand, which is more effective in loosening muscles than simple up-down movement.

[0043] In general, this design utilizes the principles of geometry and kinematics to achieve complex spatial motion through a relatively simple structure, providing a comprehensive and effective massage experience for the user. At the same time, this design also has good reliability and durability, suitable for long-term use.

[0044] The neck massage assembly 3 has the following specific structure:

[0045] The neck massage assembly 3 includes a second main shaft 31 rotatably connected to the seat body 1. The second main shaft 31. The second main shaft 31 and the seat body 1 can be connected by a bearing to ensure smooth and stable rotational movement.

[0046] The second eccentric wheel 32 is rotationally connected to the second main shaft 31. The axis of the second eccentric wheel 32 intersects the axis of the second main shaft 31 at an angle B. This design is the key to achieving complex neck massage movements. The presence of the angle B allows the second eccentric wheel 32 to produce spatial motion when rotating, thereby driving the second massage arm 33 to perform multi-dimensional massage movements, especially suitable for the curved surface structure of the neck.

[0047] The second eccentric wheel 32 is provided with a second massage arm 33 (preferably, the second eccentric wheel 32 and the second massage arm 33 are integrally connected). The second massage arm 33 and the seat body 1 are provided with a second limiting structure for limiting the left and right swinging of the second massage arm 33. This limiting design ensures the accuracy and safety of the neck massage movements, preventing the massage arm from producing excessive lateral movement and thereby avoiding discomfort or injury to the user's neck.

[0048] The second massage arm 33 extends in the left and right directions, respectively, and can massage the neck position in the left and right directions.

[0049] The size of the angle B can also be designed and selected as needed, which can be the same as the angle A or different to achieve different massage effects. For example, the angle B can be designed to be slightly smaller than the angle A (such as B is 5°-20°, and A is 10°-30°), which can make the neck massage range relatively small and more gentle, suitable for sensitive areas of the neck.

[0050] Further, the second main shaft 31 is provided with a second direction-changing connecting shaft 34. The second direction-changing connecting shaft 34 and the second main shaft 31 can be fixed by interference fit or key connection to ensure synchronous rotation. The second direction-changing connecting shaft 34 includes a second upper half 341 and a second lower half 342. This segmented design is the key to achieving eccentric motion. The second upper half 341 and the second lower half 342 can be integrally formed or separately manufactured and connected together by welding or other fixing methods.

[0051] The second upper half 341 is coaxial with the second main shaft 31, which ensures that the second direction-changing connecting shaft 34 can rotate synchronously with the second main shaft 31. The second lower half 342 is coaxial with the second eccentric wheel 32, and the second eccentric wheel 32 is sleeved on the second lower half 342 and rotationally connected thereto. This design allows the second eccentric wheel 32 to rotate freely on the second lower half 342 while also performing spatial motion with the second direction-changing connecting shaft 34. The upper end surface of the second upper half 341 is a second inclined surface 3411 that forms an angle B with the cross section of the second eccentric wheel 32. The second inclined surface 3411 contacts the lower surface of the seat body 1.

[0052] The second variable direction connecting shaft 34 is designed in a similar way as the first variable direction connecting shaft 24, but can be adjusted according to the special needs of neck massage, such as adjusting the size of the included angle B or the shape of the second inclined surface 3411. For example, the curvature of the second inclined surface 3411 can be designed to be slightly larger than that of the first inclined surface 2411 to produce a more gentle massage action suitable for the sensitive areas of the neck.

[0053] Further, the second limiting structure comprises a second limiting groove 62 provided on the limiting block 6 (preferably shared with the corresponding first limiting structure) and extending vertically with the opening facing forward. The outer side of the second eccentric wheel 32 is provided with a second protrusion 321 extending backward, which is inserted into the corresponding second limiting groove 62 and can swing up and down in the second limiting groove 62. The second protrusion 321 can be integrally formed with the second eccentric wheel 32 or separately manufactured and fixed on the second eccentric wheel 32. The length of the second protrusion 321 should be slightly smaller than the depth of the second limiting groove 62 to ensure its free movement in the groove.

[0054] The design principle of the second limiting structure is similar to that of the first limiting structure, but the direction is different to meet the needs of neck massage. This design makes the movement direction (left and right) of the second massage arm 33 different from that of the first massage arm 23 (forward and backward), which can achieve a more comprehensive massage effect.

[0055] Further, the width E of the second protrusion 321 is smaller than the width F of the second limiting groove 62, leaving a margin between them. The purpose of this design is to allow the second protrusion 321 to have a certain lateral movement space in the second limiting groove 62, so that the second massage arm 33 can achieve more complex massage actions.

[0056] In this way, the second protrusion 321 can not only swing up and down in the second limiting groove 62, but also tilt at a certain angle, that is, the swinging trajectory of the end of the second massage arm 33 is actually an elliptical ring, rather than a linear swing. This design increases the diversity of massage actions and can provide a more comprehensive massage effect. The elliptical ring-shaped swinging trajectory can simulate the kneading action of hand massage, which is more effective in loosening the muscles of the neck than simple up-and-down movement, improving the massage effect.

[0057] In summary, the design of the neck massage assembly 3 fully considers the special needs of the neck and achieves flexible and effective massage actions through simple mechanical structure.

[0058] Further, the inner side wall of the first eccentric wheel 22 is provided with a plurality of first open slots 222, and the inner side wall of the second eccentric wheel 32 is provided with a plurality of second open slots 322. These open slots can reduce the weight of the eccentric wheel, and can also play the role of heat dissipation, accommodating lubricant, etc. The number, shape and size of the open slots can be designed according to the needs, and generally 4 to 8 evenly distributed open slots can be provided.

[0059] Further, the first massage arm 23 is provided with fixed massage heads 25, and the second massage arm 33 is rotatably connected with one or more massage rollers 35. This design enables the shoulder and neck to receive different types of massage, further improving the massage effect. The fixed massage heads 25 can be made of silicone or other soft materials, and the shape can be hemispherical or other suitable shapes. The massage rollers 35 can be made of plastic or rubber materials, and the surface can be designed to be smooth or have protruding textures to provide different massage feelings. The number of massage rollers 35 can be set according to the needs, and generally can be 1 to 3.

[0060] Through the above detailed structural design, the shoulder and neck massager has simple structure, high flexibility and diversified massage effect, and can provide comprehensive and comfortable shoulder and neck massage experience for users.

Claims

1. A shoulder and neck massager characterized by: The utility model provides a shoulder and neck massage device, which comprises a seat body (1), two shoulder massage assemblies (2) and two neck massage assemblies (3) movably connected to the seat body (1), a driver (4) arranged in the seat body (1), and a transmission mechanism (5) arranged between the driver (4) and the shoulder massage assemblies (2) and the neck massage assemblies (3). The shoulder massage assembly (2) comprises a first main shaft (21) rotatably connected to the seat body (1), a first eccentric wheel (22) rotatably connected to the first main shaft (21), the axis of the first eccentric wheel (22) intersects the axis of the first main shaft (21) and the included angle is A, a first massage arm (23) extending in the front-rear direction is arranged on the first eccentric wheel (22), and a first limiting structure for limiting the first massage arm (23) to swing in the front-rear direction is arranged between the first massage arm (23) and the seat body (1). The neck massage assembly (3) comprises a second main shaft (31) rotatably connected to the seat body (1), a second eccentric wheel (32) rotatably connected to the second main shaft (31), the axis of the second eccentric wheel (32) intersects the axis of the second main shaft (31) and the included angle is B, a second massage arm (33) extending in the left-right direction is arranged on the second eccentric wheel (32), and a second limiting structure for limiting the second massage arm (33) to swing in the left-right direction is arranged between the second massage arm (33) and the seat body (1).

2. The shoulder and neck massager according to claim 1, wherein: The driver (4) is a motor, the transmission mechanism (5) comprises a worm and gear pair (51) arranged on the output shaft of the driver (4) and a plurality of gear pairs (52) arranged between the worm and gear pair (51) and the first main shaft (21) and the second main shaft (31).

3. The shoulder and neck massager according to claim 1, wherein: The first main shaft (21) is provided with a first direction-changing connecting shaft (24), the first direction-changing connecting shaft (24) comprises a first upper half (241) coaxial with the first main shaft (21) and a first lower half (242) coaxial with the first eccentric wheel (22), the first eccentric wheel (22) is sleeved on the first lower half (242) and rotatably connected thereto, the upper end surface of the first upper half (241) is a first inclined surface (2411) forming an included angle A with the cross section of the first eccentric wheel (22), and the first inclined surface (2411) is in contact with the lower surface of the seat body (1).

4. The shoulder and neck massager according to claim 1, wherein: The second main shaft (31) is provided with a second direction-changing connecting shaft (34), the second direction-changing connecting shaft (34) comprises a second upper half (341) coaxial with the second main shaft (31) and a second lower half (342) coaxial with the second eccentric wheel (32), the second eccentric wheel (32) is sleeved on the second lower half (342) and rotatably connected thereto, the upper end surface of the second upper half (341) is a second inclined surface (3411) forming an included angle B with the cross section of the second eccentric wheel (32), and the second inclined surface (3411) is in contact with the lower surface of the seat body (1).

5. The shoulder and neck massager according to claim 1, wherein: The first limiting structure comprises a limiting block (6) arranged at the bottom of the seat body (1), the limiting block (6) is provided with a first limiting slot (61) extending in the vertical direction and opening forward, and the outer side of the first eccentric wheel (22) is provided with a first protrusion (221) extending forward, the first protrusion (221) is inserted into the corresponding first limiting slot (61) and can swing up and down in the first limiting slot (61).

6. The shoulder and neck massager according to claim 5, wherein: The width C of the first protrusion (221) is smaller than the width D of the first limiting slot (61).

7. The shoulder and neck massager of claim 1, wherein: The second limiting structure comprises a limiting block (6) arranged at the bottom of the seat body (1), the limiting block (6) is provided with a second limiting slot (62) extending in the vertical direction and opening forward, and the outer side of the second eccentric wheel (32) is provided with a second protrusion (321) extending backward, the second protrusion (321) is inserted into the corresponding second limiting slot (62) and can swing up and down in the second limiting slot (62).

8. The shoulder and neck massager according to claim 7, wherein: The width E of the second protrusion (321) is smaller than the width F of the second limiting slot (62).

9. The shoulder and neck massager of claim 1, wherein: The inner side wall of the first eccentric wheel (22) is provided with a plurality of first slots (222), and the inner side wall of the second eccentric wheel (32) is provided with a plurality of second slots (322).

10. The shoulder and neck massager of claim 1, wherein: The first massage arm (23) is provided with a fixed massage head (25), and the second massage arm (33) is rotatably connected with one or more massage rollers (35).