Hand-held neck and shoulder pinch massager

Abstract

The utility model relates to the technical field of massaging instrument, concretely relates to a hand-held neck and shoulder pinch massager. Two eccentricity columns of rotation phase difference 180 DEG are arranged to the opposite ends of the drive wheel, cooperate the strip through groove on two connecting rods, make two massage clamp arms can produce the alternating type of close -together and separate movement when the drive wheel rotates, thereby realize the pinch type massage to neck and shoulder parts, and the massage experience is closer to real handwork massage. Through the structural design that first massage clamp arm is fixedly connected with first connecting rod and is hinged to first hinged seat, second massage clamp arm is fixedly connected with second connecting rod and is hinged to second hinged seat, when eccentricity column moves in strip through groove, connecting rod swings around hinged seat, swing movement of the swing motion of clamp arm is high -efficiently converted to rotary motion, and transmission efficiency is high, and the structure is compact. Two massage clamp arms are relatively spaced apart and form the massage part, and the interval size is adapted to the size of the part to be massaged, can carry out effective pinch to neck and shoulder parts.

Description

Technical Field

[0001] This utility model relates to the field of massage equipment technology, specifically to a handheld neck and shoulder pinching massager. Background Technology

[0002] With the fast pace of modern work and changing lifestyles, neck and shoulder fatigue, stiffness, and soreness have become common problems plaguing many office workers and the elderly. To alleviate these discomforts, various handheld neck and shoulder massagers have appeared on the market. Their basic principle is to use vibration, tapping, or rolling to mechanically stimulate the neck and shoulder area in order to relax muscles and promote blood circulation.

[0003] However, most existing handheld neck and shoulder massagers can only provide a single type of massage action, such as reciprocating pounding or simple vibration, making it difficult to simulate the complex movements of human hand kneading and pinching. This results in a rather monotonous massage experience and limited relaxation effect. Especially for areas that require pinching stimulation, such as the sides of the neck and the upper shoulders, the massage heads of existing massagers usually use a fixed spacing or only perform synchronous opening and closing movements, failing to achieve alternating pinching and kneading of muscle tissue, resulting in a stiff massage feel.

[0004] Furthermore, the internal transmission mechanisms of existing handheld massagers mostly employ worm gears combined with multi-stage gears or cam linkages. While these can achieve some oscillating or reciprocating motion, the overall transmission chain is long, with numerous parts, occupying a large internal space, which is detrimental to the miniaturization and lightweight design of handheld products. Additionally, the gear meshing in some transmission structures generates significant noise, affecting the user's comfort during use.

[0005] Therefore, how to provide a neck and shoulder massager that is compact in structure, has smooth transmission, and can simulate the alternating pinching action of human hands has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0006] This invention addresses the technical problems of existing handheld neck and shoulder massagers, such as difficulty in achieving alternating pinching motions, complex transmission structures, large space requirements, and high transmission noise. It provides a handheld neck and shoulder pinching massager that is compact, has high transmission efficiency, and can simulate alternating pinching motions of a human hand.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A handheld neck and shoulder pinching massager includes a housing, one end of which is a handheld part and the other end of which is a massage part. The other end of the housing is provided with a massage mechanism and two massage clamping arm assemblies. The massage mechanism includes a drive motor and a drive wheel. The output shaft of the drive motor is connected to the drive wheel to drive the drive wheel to rotate. An eccentric column is provided at each of the opposite ends of the drive wheel, and the corresponding rotational phase difference between the two eccentric columns is 180°. The two massage arm assemblies are a first massage arm assembly and a second massage arm assembly, respectively. The first massage arm assembly includes a first massage arm and a first connecting rod. One end of the first massage arm is fixedly connected to one end of the first connecting rod, and the connection between the two is hinged to a first hinge seat disposed on the massage mechanism. The second massage arm assembly includes a second massage arm and a second connecting rod. One end of the second massage arm is fixedly connected to one end of the second connecting rod, and the connection between the two is hinged to a second hinge seat disposed on the massage mechanism. The other end of the first connecting rod is provided with a first strip-shaped through groove, and the other end of the second connecting rod is provided with a second strip-shaped through groove. The first connecting rod and the second connecting rod are respectively located on opposite sides of the massage mechanism, and the first strip-shaped through groove and the second strip-shaped through groove are respectively sleeved on the two eccentric columns. The eccentric columns can move within the corresponding strip-shaped through grooves. When the eccentric columns rotate, the first massage clamp arm and the second massage clamp arm swing under the constraint of the corresponding hinge seat, and the first massage clamp arm and the second massage clamp arm are arranged at relative intervals to form a massage part.

[0008] Furthermore, the first hinge seat is fixed to the massage mechanism, and the second hinge seat is adjustablely disposed on the massage mechanism to adjust the distance between the first massage arm and the second massage arm.

[0009] Furthermore, an adjustment component is provided on each of the opposite sides of the massage mechanism. The adjustment component includes a straight convex strip, a straight limiting rack, an adjustment block, and a movable part. The straight protrusion and the straight limiting toothed rack are both disposed on the outer wall surface of the massage mechanism and are arranged parallel to each other at intervals. The adjusting block has a straight groove on the side facing the massage mechanism that matches the straight protrusion, and the adjusting block slides with the straight protrusion through the straight groove; An adjusting arm is connected to the adjusting block, and the adjusting arm is fixedly connected to the second hinge seat; The movable component is disposed on the adjusting block, and one end of the movable component is provided with a locking part. The locking part is used to engage or disengage with the teeth on the linear limiting rack to restrict or allow the adjusting block to move along the linear protrusion.

[0010] Furthermore, the adjusting block is provided with a receiving groove, the middle part of the movable member is hinged to the receiving groove by a rotating shaft, one end of the movable member abuts against the bottom of the receiving groove by a spring, the other end of the movable member extends out of the receiving groove and extends to the linear limiting rack, and the locking part is provided on the side of the other end of the movable member facing the linear limiting rack.

[0011] Furthermore, an adjustment switch is connected to the side of the movable part facing away from the bottom of the receiving groove. The adjustment switch is used to drive the movable part to rotate around the rotation axis so that the locking part separates from the teeth on the linear limiting rack. When the locking part separates from the teeth on the linear limiting rack, the spring is compressed and accumulates restoring force.

[0012] Furthermore, the outer wall surface of the massage mechanism is provided with a guide protrusion corresponding to the position of the second hinge seat, and the second hinge seat is provided with a guide groove adapted to the guide protrusion. The second hinge seat slides with the guide protrusion through the guide groove.

[0013] Furthermore, the first massage arm and the second massage arm each have a plurality of massage protrusions on their opposite sides.

[0014] Furthermore, the multiple massage protrusions are arranged in a matrix.

[0015] Furthermore, the adjustment switches of the two adjustment components need to be operated synchronously to simultaneously release the locking relationship between the locking parts of the two adjustment components and the corresponding linear limiting racks.

[0016] Furthermore, a transmission gear is provided between the output shaft of the drive motor and the drive wheel. The transmission gear has an integrally formed first tooth and a second tooth on the same axis. The output shaft meshes with the first tooth, and the second tooth meshes with the drive wheel. The first tooth is a helical tooth, and the second tooth is a straight tooth.

[0017] Furthermore, the cylinder pushes the test lead fixing seat to move so that the flange end face of the connector under test fixed on the test lead fixing seat abuts against the corresponding end face of the test head.

[0018] Compared with the prior art, this utility model has the following advantages: This utility model provides a handheld neck and shoulder pinching massager. Two eccentric pillars with a 180° rotational phase difference are positioned at opposite ends of a drive wheel. These, along with strip-shaped grooves on two connecting rods, allow the two massage arms to alternately move closer and further apart as the drive wheel rotates. This achieves a pinching massage of the neck and shoulders, simulating the pinching motion of a human hand, providing a massage experience closer to a real hand massage. The design features a first massage arm fixedly connected to a first connecting rod and hinged to a first hinge seat, and a second massage arm fixedly connected to a second connecting rod and hinged to a second hinge seat. When the eccentric pillars move within the strip-shaped grooves, the connecting rods swing around the hinge seats, efficiently converting rotational motion into swinging motion of the clamping arms. This design boasts high transmission efficiency and a compact structure, suitable for the confined space of a handheld massager. The two massage arms are spaced apart to form a massage area, with the spacing adapted to the size of the area to be massaged, allowing for effective pinching of the neck and shoulders. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a handheld neck and shoulder pinching massager according to this embodiment; Figure 2 yes Figure 1 The main view; Figure 3 yes Figure 1 Side view; Figure 4 yes Figure 1 A bottom view; Figure 5 This is a structural schematic diagram of a handheld neck and shoulder pinching massager (with one side of the casing removed) according to this embodiment; Figure 6 This is a schematic diagram of the massage mechanism of a handheld neck and shoulder pinching massager according to this embodiment; Figure 7 yes Figure 6 The main view; Figure 8 yes Figure 6 Side view; Figure 9 yes Figure 6 Top view; Figure 10 This is a schematic diagram of the massage mechanism (excluding its housing) of a handheld neck and shoulder pinching massager according to this embodiment; Figure 11 yes Figure 10 The main view; Figure 12 yes Figure 10 Side view; Figure 13 yes Figure 10 Top view; Label Explanation: 1. Housing; 2. Massage mechanism; 21. Drive motor; 22. Drive wheel; 221. Eccentric column; 23. Transmission gear; 3. Massage arm assembly; 31. First massage arm assembly; 311. First massage arm; 312. First connecting rod; 3121. First strip groove; 313. First hinge seat; 32. Second massage arm assembly; 4. Adjustment component; 41. Straight convex bar; 42. Straight limit rack; 43. Adjustment block; 431. Adjustment arm; 44. Movable part; 441. Rotating shaft; 45. Spring; 46. Adjustment switch. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below with reference to the technical solution and accompanying drawings. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] See Figures 1 to 13 As shown, this embodiment provides a handheld neck and shoulder pinching massager, which mainly includes a housing 1, a massage mechanism 2, and two massage clamping arm assemblies 3.

[0022] The housing 1 is the outer shell of the entire massager. One end of the housing 1 is the handheld part for the user to hold and operate; the other end is the massage part, which is used to contact and massage the neck and shoulder areas. The housing 1 has an internal mounting cavity, where the massage mechanism 2 and two massage arm assemblies 3 are located within the massage part. The housing 1 can be assembled by snapping together the left and right housings, facilitating the assembly and maintenance of internal components.

[0023] The massage mechanism 2 is the power core that drives the massage arms to move. The massage mechanism 2 includes a drive motor 21 and a drive wheel 22.

[0024] The drive motor 21 is a miniature DC motor, and its output shaft is connected to the drive wheel 22 to drive the drive wheel 22 to rotate. The drive motor 21 is fixedly mounted on the bracket of the massage mechanism 2. The drive wheel 22 is a disc-shaped or annular rotating component, which is rotatably mounted on the bracket of the massage mechanism 2. The drive wheel 22 has a pivot hole in the middle, and is rotatably connected to the bracket through a pivot.

[0025] An eccentric column 221 is provided at each of the two opposite ends of the drive wheel 22 (i.e., the two opposite sides in the radial direction of the drive wheel 22, preferably at the two ends in the diametrical direction of the drive wheel 22). The eccentric column 221 is a cylindrical protrusion structure, and its axis is offset from the rotation center of the drive wheel 22. The phase difference between the two eccentric columns 221 and the rotation center of the drive wheel 22 is 180°. In other words, when the drive wheel 22 rotates, the two eccentric columns 221 are located on both sides of the center of the drive wheel 22, and they are always in opposite positions. That is, when one eccentric column 221 moves to the highest point, the other eccentric column 221 moves to the lowest point, and vice versa.

[0026] The two massage arm assemblies 3 are the first massage arm assembly 31 and the second massage arm assembly 32, respectively. They have the same structure and are arranged opposite to each other.

[0027] The first massage arm assembly 31 includes a first massage arm 311 and a first connecting rod 312. The first massage arm 311 is an elongated component, one end of which is fixedly connected to one end of the first connecting rod 312. The two can be fixedly connected by means of integral molding, welding, screw connection, or injection molding insert. A hinge hole is provided at the connection between the first massage arm 311 and the first connecting rod 312. This hinge hole is hinged to a first hinge seat 313 disposed on the massage mechanism 2 via a hinge shaft. The first hinge seat 313 is disposed on the bracket of the massage mechanism 2.

[0028] The second massage arm assembly 32 includes a second massage arm and a second connecting rod. The second massage arm is a long strip-shaped component, one end of which is fixedly connected to one end of the second connecting rod. A hinge hole is provided at the connection point between the two, and the hinge hole is hinged to a second hinge seat disposed on the massage mechanism 2 via a hinge shaft. The second hinge seat is also disposed on the bracket of the massage mechanism 2.

[0029] The other end of the first connecting rod 312 is provided with a first strip-shaped through groove 3121, which is an oblong or waist-shaped hole extending along the length of the first connecting rod 312. The other end of the second connecting rod is provided with a second strip-shaped through groove, which is also an oblong or waist-shaped hole extending along the length of the second connecting rod. The first connecting rod 312 and the second connecting rod are located on opposite sides of the massage mechanism 2 (i.e., on both sides of the drive wheel 22), and the first strip-shaped through groove 3121 and the second strip-shaped through groove are respectively fitted onto two eccentric posts 221 at both ends of the drive wheel 22. Specifically, one eccentric post 221 is inserted into the first strip-shaped through groove 3121, and the other eccentric post 221 is inserted into the second strip-shaped through groove.

[0030] The outer diameter of the eccentric column 221 is slightly smaller than the width of the strip groove, allowing the eccentric column 221 to move freely within the strip groove. This movement includes relative sliding along the length of the strip groove and circumferential rotation of the eccentric column 221 within the groove. When the drive wheel 22 rotates, the two eccentric columns 221 respectively move in a circular motion around the center of the drive wheel 22. During this process, the eccentric columns 221 move within the corresponding strip groove, pushing the lower end of the connecting rod to produce displacement. Since the upper end of the connecting rod is hinged to the massage mechanism 2 via a hinge seat, the connecting rod swings around the hinge point, thereby driving the massage clamp arm fixedly connected to the upper end of the connecting rod to swing. Because the two eccentric columns 221 have a phase difference of 180°, their directions of movement are opposite—when the first massage clamp arm 311 swings inward (closes), the second massage clamp arm also swings inward (closes), and vice versa.

[0031] The first massage arm 311 and the second massage arm are arranged at intervals relative to each other, and the space between them together forms a massage part, which is used to accommodate and pinch the neck, shoulders and other parts of the human body. The first massage arm 311 and the second massage arm are both cantilever structures with free ends extending forward. Their front ends (i.e., the ends away from the hinge points) are free ends and can swing back and forth relative to the housing 1.

[0032] In use, the user holds the massager by the hand and places the massage part (i.e., the space between the first and second massage arms) on the area to be massaged (such as the sides of the neck or shoulders). The drive motor 21 is activated, and its output shaft drives the drive wheel 22 to rotate. The two eccentric columns 221 on the drive wheel 22 rotate synchronously. Because the two eccentric columns 221 have a 180° phase difference, the two connecting rods are alternately pushed and pulled, causing the first and second massage arms 311 and 2 to swing alternately around their respective hinge seats. This means the two massage arms simultaneously approach and separate, achieving a pinching massage of the area to be massaged. Each rotation of the drive wheel 22 completes one full approach-separation cycle, and the approaching and separating actions alternate sequentially, simulating the massage effect of a human hand alternately pinching muscles.

[0033] Based on the above technical solution, two eccentric columns 221 with a rotational phase difference of 180° are set at opposite ends of the drive wheel 22. In conjunction with the strip grooves on the two connecting rods, the two massage arms can generate alternating closing and separating movements when the drive wheel 22 rotates, thereby realizing a pinching massage for the neck and shoulders, simulating the pinching action of a human hand, and the massage experience is closer to a real manual massage. At the same time, the cooperation structure between the eccentric column 221 and the strip groove, as well as the hinge structure between the connecting rod and the hinge seat, efficiently converts the rotational motion into the swinging motion of the clamping arms. The transmission chain is short, the number of parts is small, and the structure is compact, which is suitable for the narrow internal space of a handheld massager and is conducive to the miniaturization design of the product.

[0034] Based on the above embodiment, the first hinge seat 313 is fixed to the massage mechanism 2, while the second hinge seat is adjustablely disposed on the massage mechanism 2. By adjusting the position of the second hinge seat relative to the massage mechanism 2, the distance between the second hinge seat and the first hinge seat 313 can be changed. Since the first massage arm 311 and the second massage arm are respectively hinged to the first hinge seat 313 and the second hinge seat, the distance between the two massage arms changes accordingly.

[0035] The specific method for adjusting the position of the second hinge seat is as follows: a slide rail or guide groove structure is provided on the massage mechanism 2, the second hinge seat is slidably installed on the slide rail, and the second hinge seat is fixed in the desired position by a locking mechanism. By adjusting the position of the second hinge seat, the distance between the first massage arm 311 and the second massage arm can be increased or decreased.

[0036] Based on the above technical solution, by fixing the first hinge seat 313 to the massage mechanism 2 and adjusting the second hinge seat to the massage mechanism 2, the initial distance between the first massage arm 311 and the second massage arm can be adjusted as needed. Users can adjust the distance between the two massage arms according to their own neck thickness, shoulder thickness, or the actual size of different massage areas, so that the massager can be adapted to different people (such as adults and children) and different massage areas (such as neck, shoulders, arms, etc.), significantly improving the product's versatility and user experience.

[0037] Based on the above embodiment, an adjustment component 4 is provided on each of the opposite sides of the massage mechanism 2. Each adjustment component 4 includes a linear protrusion 41, a linear limiting rack 42, an adjustment block 43, and a movable part 44.

[0038] The linear protrusion 41 is a long strip-shaped protrusion extending longitudinally along the outer wall surface of the massage mechanism 2, with a T-shaped or trapezoidal cross-section. The linear limiting rack 42 is a long strip-shaped component extending longitudinally along the outer wall surface of the massage mechanism 2, with multiple teeth (grooves or teeth) arranged along its length on one side surface. The linear protrusion 41 and the linear limiting rack 42 are parallel to each other and spaced apart on the same outer wall surface of the massage mechanism 2.

[0039] The adjusting block 43 is an independent component with a straight groove on its inner side (facing the massage mechanism 2). The cross-sectional shape of this groove matches the cross-sectional shape of the straight protrusion 41. The adjusting block 43 is fitted onto the straight protrusion 41 through the straight groove and can slide freely along the length of the straight protrusion 41. An adjusting arm 431 is connected to the adjusting block 43 and is fixedly connected to the second hinge seat. When the adjusting block 43 slides along the straight protrusion 41, the second hinge seat moves synchronously through the adjusting arm 431.

[0040] The movable part 44 is disposed on the adjusting block 43 and is used to lock and unlock the position of the adjusting block 43 on the straight protrusion 41. One end of the movable part 44 is provided with a locking part, the shape of which is adapted to the shape of the teeth on the straight limiting rack 42. The locking part can be engaged with the teeth and can also be disengaged from the teeth. When the locking part is engaged with the teeth on the straight limiting rack 42, the relative position between the adjusting block 43 and the straight limiting rack 42 is locked, and the adjusting block 43 cannot move along the straight protrusion 41; when the locking part is disengaged from the teeth on the straight limiting rack 42, the adjusting block 43 is released and can slide freely along the straight protrusion 41.

[0041] Based on the above technical solution, an adjustment assembly 4, consisting of a straight convex strip 41, a straight limiting rack 42, an adjustment block 43, and a movable part 44, is respectively arranged on opposite sides of the massage core 2, forming a compact and reliable spacing adjustment and locking structure. The adjustment block 43 slides with the straight convex strip 41 through a straight groove, ensuring the smoothness and directional certainty of the adjustment process; the locking part on the movable part 44 engages with the teeth on the straight limiting rack 42, enabling stable locking of the adjustment block 43 at any adjustment position. This structure achieves the dual functions of gear adjustment and locking within a limited space, and is easy to operate, suitable for the miniaturization needs of handheld massagers.

[0042] Based on the above embodiment, the adjusting block 43 is provided with a receiving groove, which is a cavity opened in the body of the adjusting block 43 to accommodate most of the structure of the movable member 44. The movable member 44 is generally a long strip-shaped plate-like component, the middle part of which is hinged to the receiving groove by a rotating shaft 441, so that the movable member 44 can rotate around the rotating shaft 441 within a certain angle range. The rotating shaft 441 is arranged perpendicular to the sliding direction of the adjusting block 43.

[0043] One end (first end) of the movable member 44 faces the bottom of the receiving groove, and this end abuts against the bottom of the receiving groove via a spring 45. The spring 45 is preferably a compression spring 45, with one end abutting against the first end of the movable member 44 and the other end abutting against the bottom of the receiving groove. Under the elastic force of the spring 45, the first end of the movable member 44 is always subjected to a thrust away from the bottom of the groove.

[0044] The other end (second end) of the movable member 44 extends from the receiving groove to the linear limiting rack 42. A locking portion is provided on the side of the second end of the movable member 44 facing the linear limiting rack 42, which engages with the teeth on the linear limiting rack 42. Since the movable member 44 can rotate about the rotation axis 441, under the thrust of the spring 45, the second end of the movable member 44 is pressed towards the linear limiting rack 42, causing the locking portion to maintain its engagement with the teeth.

[0045] When it is necessary to release the lock, a force is applied to the second end of the movable member 44 in a direction away from the linear limiting rack 42, causing the movable member 44 to rotate around the rotation axis 441. The second end of the movable member 44 is lifted, and the locking part disengages from the teeth. At the same time, the first end of the movable member 44 compresses the spring 45. When the external force is released, the restoring force of the spring 45 pushes the first end of the movable member 44 to rotate in the opposite direction, causing the second end of the movable member 44 to press back against the linear limiting rack 42, and the locking part automatically engages in the teeth to restore the locked state.

[0046] Based on the above technical solution, by setting a receiving groove on the adjusting block 43, the middle part of the movable part 44 is hinged to the receiving groove through a rotating shaft 441. One end of the movable part 44 abuts against the bottom of the receiving groove through a spring 45, and the other end extends out of the receiving groove and is provided with a locking part, thus realizing the elastic floating function of the locking part. The setting of the spring 45 ensures that the locking part always remains engaged with the teeth of the linear limiting rack 42 when no external force is applied, ensuring that the adjusting block 43 will not be accidentally displaced due to vibration or external force during use, thereby enhancing the reliability and safety of the massager during use.

[0047] Based on the above embodiment, an adjustment switch 46 is connected to the side of the movable member 44 (i.e., the location of the rotating shaft 441) facing away from the bottom of the receiving groove. The adjustment switch 46 is a toggle or push-button component, which at least partially extends out of the adjustment block 43 for easy operation by the user. The adjustment switch 46 is fixedly connected to the middle of the movable member 44 or integrally formed.

[0048] When the user operates the adjustment switch 46, the switch drives the movable part 44 to rotate around the rotation axis 441, causing the second end of the movable part 44 to swing away from the linear limiting rack 42, and the locking part to separate from the teeth on the linear limiting rack 42. During this process, the first end of the movable part 44 compresses the spring 45, and the spring 45 accumulates restoring force. When the user releases the adjustment switch 46, the restoring force of the spring 45 drives the movable part 44 to rotate in the opposite direction around the rotation axis 441, causing the second end of the movable part 44 to press back against the linear limiting rack 42, and the locking part automatically resets and engages with the teeth.

[0049] Based on the above technical solution, by setting an adjustment switch 46 on the side of the movable part 44 away from the bottom of the receiving groove, the user can control the separation of the locking part from the teeth of the linear limiting rack 42 by pressing or tossing the adjustment switch 46. When the locking part separates from the teeth, the spring 45 is compressed and accumulates restoring force, so that when the user releases the adjustment switch 46 after completing the spacing adjustment, the restoring force of the spring 45 can drive the movable part 44 to automatically reset, and the locking part re-engages with the teeth, realizing automatic locking. This structure allows the spacing adjustment operation to be completed with only one hand, which is convenient and reduces the difficulty of use for users, while ensuring the reliability of locking and the continuity of operation.

[0050] Based on the above embodiment, a guide ridge is provided on the outer wall surface of the massage mechanism 2 corresponding to the position of the second hinge seat. The guide ridge is an elongated strip-shaped protrusion extending along the sliding direction of the adjusting block 43, and its cross-section is T-shaped or rectangular. A guide groove is provided on the second hinge seat, and the cross-sectional shape of the guide groove is adapted to the guide ridge. The second hinge seat is sleeved on the guide ridge through the guide groove and can slide along the length direction of the guide ridge.

[0051] The second hinge seat is fixedly connected to the adjusting arm 431 of the adjusting block 43. When the adjusting block 43 slides along the straight protrusion 41, the adjusting arm 431 drives the second hinge seat to slide synchronously along the guide protrusion, so that the second hinge seat always moves in the predetermined direction.

[0052] Based on the above technical solution, by setting a guide protrusion on the outer wall surface of the massage core 2 corresponding to the position of the second hinge seat, and setting a matching guide groove on the second hinge seat, the second hinge seat is constrained and guided by the guide protrusion during the movement of the adjustment block 43. This ensures the accuracy of the movement direction and the consistency of the position of the second hinge seat during the spacing adjustment process, prevents the second hinge seat from tilting or getting stuck due to the force on one side of the adjustment block 43, and ensures that the two massage arms maintain the correct relative position and clamping angle after adjustment, thereby improving the massage stability and reliability.

[0053] Based on the above embodiments, the first massage arm 311 and the second massage arm have multiple massage protrusions on their opposite sides (i.e., the sides of the two arms facing each other, which are also the sides that come into contact with the human body during massage). The massage protrusions are hemispherical, cylindrical, or frustum-shaped protrusions, with a preferred height of 2mm to 8mm. The massage protrusions are integrally injection molded with the massage arms, or they can be fixed to the massage arms by embedding. The massage protrusions are made of soft rubber or hard plastic, preferably silicone or TPE material with a certain degree of elasticity to improve massage comfort.

[0054] During use, the massage protrusions come into direct contact with human skin and muscle tissue, generating point-like pressure stimulation on local acupoints and muscle nodes while performing pinching motions.

[0055] Based on the above technical solution, by setting multiple massage protrusions on the opposite sides of the first massage clamp arm 311 and the second massage clamp arm, during the pinching massage, the massage protrusions can generate local pressure stimulation on the skin and muscle tissue of the massage area, increase the three-dimensionality and layering of the massage, enhance the stimulation effect on acupoints and muscle nodes, and improve the overall massage experience and physiotherapy effect.

[0056] Based on the above embodiments, multiple massage protrusions are arranged in a matrix. A matrix arrangement means that the massage protrusions are arranged in multiple rows and columns along the length and width directions of the massage arm on opposite sides, with equal or regular spacing. For example, the massage protrusions can be arranged in a 3x5 or 4x6 matrix. The row and column spacing between adjacent massage protrusions is equal or set according to a predetermined ratio.

[0057] Based on the above technical solution, by setting multiple massage protrusions in a matrix distribution, the massage protrusions are arranged evenly and orderly on the opposite sides of the massage arm. When in contact with the massage area, they can form a uniform pressure distribution, avoiding the problem of excessive or insufficient local pressure due to uneven distribution of protrusions. This makes the massage stimulation more regular and uniform. At the same time, the matrix arrangement is also convenient for processing and manufacturing, ensuring product consistency and production efficiency.

[0058] Based on the above embodiment, since each side of the massage mechanism 2 is provided with an adjustment component 4, the two adjustment components 4 are located on both sides of the second hinge seat, and together provide support and adjustment for the second hinge seat. Each of the two adjustment components 4 has an adjustment switch 46.

[0059] The adjustment switches 46 of the two adjustment components 4 need to be operated synchronously to simultaneously release the locking relationship between the locking parts of the two adjustment components 4 and the corresponding linear limiting racks 42. Specifically, the two adjustment switches 46 can be linked by a linkage rod or a synchronous dial ring, so that when the user operates one switch, it can simultaneously drive the two moving parts 44 to move synchronously; or, the positions of the two adjustment switches 46 are designed so that the user needs to pinch them with his thumb and forefinger at the same time to achieve synchronous unlocking.

[0060] When the two adjusting switches 46 are operated synchronously, the locking parts of the two adjusting components 4 simultaneously disengage from the corresponding linear limiting rack teeth 42, allowing the adjusting block 43 to slide freely along the linear protrusion 41, thereby adjusting the position of the second hinge seat. When the adjusting switches 46 are released, the springs 45 of the two adjusting components 4 simultaneously push the movable part 44 to reset, and the two locking parts simultaneously re-engage into the corresponding teeth, achieving synchronous locking.

[0061] Based on the above technical solution, by setting the adjustment switches 46 of the two adjustment components 4 to operate synchronously, the technical problem of inconsistent positions of the two adjustment components 4 caused by the user operating only one side of the adjustment component 4 is effectively avoided. If only one side is adjusted while the other side is not adjusted synchronously, the forces on both ends of the second hinge seat will be uneven, causing the second hinge seat to tilt, which in turn will cause the clamping angle of the two massage arms to shift, affecting the clamping effect or even causing the mechanism to jam. Synchronous operation ensures that the adjustment blocks 43 of the two adjustment components 4 move synchronously along the straight convex strip 41, ensuring that the second hinge seat always maintains the correct posture, thereby ensuring the symmetry of the two massage arms and the accuracy of the clamping movement.

[0062] Based on the above embodiment, a transmission gear 23 is provided between the output shaft of the drive motor 21 and the drive wheel 22. The transmission gear 23 is an independent rotating component, rotatably mounted on the bracket of the massage mechanism 2. The transmission gear 23 has an integrally formed first tooth and a second tooth coaxially arranged. Both the first tooth and the second tooth are gear tooth structures arranged along the outer periphery of the transmission gear 23, and are coaxially arranged and located at different axial positions of the transmission gear 23.

[0063] The output shaft of the drive motor 21 is equipped with a worm or drive gear, which meshes with the first tooth on the transmission gear 23. The first tooth is a helical tooth, meaning that the tooth line of the first tooth forms a certain helix angle with the axial direction of the transmission gear 23.

[0064] The second tooth meshes with the drive wheel 22. Specifically, the outer circumference of the drive wheel 22 is provided with mating teeth that mesh with the second tooth. The second tooth is a spur tooth, that is, the tooth line direction of the second tooth is parallel to the axial direction of the transmission gear 23.

[0065] The transmission gear 23 is rotatably mounted on the bracket of the massage mechanism 2 via bearings or bushings. The power of the drive motor 21 is transmitted to the first tooth via the output shaft, which drives the transmission gear 23 to rotate as a whole. The power is then transmitted to the drive wheel 22 via the second tooth, which in turn drives the two eccentric columns 221 to rotate.

[0066] Based on the above technical solution, by setting the first tooth as a helical tooth, the high-speed rotational power output by the drive motor 21 is smoothly transmitted in the first stage of gear transmission, taking advantage of the large overlap coefficient, smooth transmission, and low noise of helical teeth. This effectively reduces the transmission noise during the operation of the massager and improves the user experience. By setting the second tooth as a spur tooth, the high load-bearing capacity, high transmission efficiency, and no axial force of spur teeth are utilized to ensure that the power after the first stage of deceleration can be efficiently and reliably transmitted to the drive wheel 22, ensuring the rotational stability of the drive wheel 22 under heavy load conditions. By making the first tooth and the second tooth coaxial and integrally formed on the same transmission gear 23, not only is the coaxiality accuracy of the two teeth guaranteed and assembly errors are reduced, but the intermediate connecting parts between the two gears are also eliminated, simplifying the assembly process, reducing manufacturing costs, and improving the compactness of the transmission chain, which is conducive to the miniaturization design of the handheld massager.

[0067] This utility model has been described with reference to the above-described embodiments and accompanying drawings. However, the above embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. On the contrary, modifications and equivalent provisions included in the spirit and scope of the claims are all included within the scope of this utility model.

Claims

1. A handheld neck and shoulder pinching massager, comprising a housing, one end of which is a handheld part, and the other end of which is a massage part, wherein a massage mechanism and two massage clamping arm assemblies are disposed inside the other end of the housing, characterized in that: The massage mechanism includes a drive motor and a drive wheel, and the output shaft of the drive motor is connected to the drive wheel to drive the drive wheel to rotate. An eccentric column is provided at each of the opposite ends of the drive wheel, and the corresponding rotational phase difference between the two eccentric columns is 180°. The two massage arm assemblies are a first massage arm assembly and a second massage arm assembly, respectively. The first massage arm assembly includes a first massage arm and a first connecting rod. One end of the first massage arm is fixedly connected to one end of the first connecting rod, and the connection between the two is hinged to a first hinge seat disposed on the massage mechanism. The second massage arm assembly includes a second massage arm and a second connecting rod. One end of the second massage arm is fixedly connected to one end of the second connecting rod, and the connection between the two is hinged to a second hinge seat disposed on the massage mechanism. The other end of the first connecting rod is provided with a first strip-shaped through groove, and the other end of the second connecting rod is provided with a second strip-shaped through groove. The first connecting rod and the second connecting rod are respectively located on opposite sides of the massage mechanism, and the first strip-shaped through groove and the second strip-shaped through groove are respectively sleeved on the two eccentric columns. The eccentric columns can move within the corresponding strip-shaped through grooves. When the eccentric columns rotate, the first massage clamp arm and the second massage clamp arm swing under the constraint of the corresponding hinge seat, and the first massage clamp arm and the second massage clamp arm are arranged at relative intervals to form a massage part.

2. The handheld neck and shoulder pinching massager according to claim 1, characterized in that, The first hinge seat is fixed to the massage mechanism, and the second hinge seat is adjustablely disposed on the massage mechanism to adjust the distance between the first massage arm and the second massage arm.

3. The handheld neck and shoulder pinching massager according to claim 2, characterized in that, The massage mechanism has an adjustment component on each of its opposite sides. The adjustment component includes a straight convex bar, a straight limiting rack, an adjustment block, and a movable part. The straight protrusion and the straight limiting toothed bar are both disposed on the outer wall surface of the massage mechanism and are arranged parallel to each other at intervals. The adjusting block has a straight groove on the side facing the massage mechanism that matches the straight protrusion, and the adjusting block slides with the straight protrusion through the straight groove; An adjusting arm is connected to the adjusting block, and the adjusting arm is fixedly connected to the second hinge seat; The movable component is disposed on the adjusting block, and one end of the movable component is provided with a locking part. The locking part is used to engage or disengage with the teeth on the linear limiting rack to restrict or allow the adjusting block to move along the linear protrusion.

4. The handheld neck and shoulder pinching massager according to claim 3, characterized in that, The adjusting block is provided with a receiving groove. The middle part of the movable part is hinged to the receiving groove through a rotating shaft. One end of the movable part abuts against the bottom of the receiving groove through a spring. The other end of the movable part extends out of the receiving groove and extends to the linear limiting rack. The locking part is provided on the side of the other end of the movable part facing the linear limiting rack.

5. The handheld neck and shoulder pinching massager according to claim 4, characterized in that, An adjustment switch is connected to the side of the movable part away from the bottom of the receiving groove. The adjustment switch is used to drive the movable part to rotate around the rotation axis so that the locking part separates from the teeth on the linear limiting rack. When the locking part separates from the teeth on the linear limiting rack, the spring is compressed and accumulates restoring force.

6. The handheld neck and shoulder pinching massager according to claim 3, characterized in that, The outer wall surface of the massage mechanism is provided with a guide protrusion corresponding to the position of the second hinge seat. The second hinge seat is provided with a guide groove that matches the guide protrusion. The second hinge seat slides with the guide protrusion through the guide groove.

7. The handheld neck and shoulder pinching massager according to claim 1, characterized in that, The first massage arm and the second massage arm each have multiple massage protrusions on their opposite sides.

8. The handheld neck and shoulder pinching massager according to claim 7, characterized in that, The massage protrusions are arranged in a matrix.

9. The handheld neck and shoulder pinching massager according to claim 3, characterized in that, The adjustment switches of the two adjustment components need to be operated synchronously to simultaneously release the locking relationship between the locking parts of the two adjustment components and the corresponding linear limiting racks.

10. The handheld neck and shoulder pinching massager according to claim 1, characterized in that, A transmission gear is provided between the output shaft of the drive motor and the drive wheel. The transmission gear has a first tooth and a second tooth integrally formed on the same axis. The output shaft meshes with the first tooth, and the second tooth meshes with the drive wheel. The first tooth is a helical tooth, and the second tooth is a straight tooth.

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