Head massager

Abstract

Provided is a head massager that improves massage intensity and comfort. 【Solution means】The head massager includes a case, several massage heads 1, and a transmission assembly for driving the massage heads to swing. The transmission assembly includes a gear group, a drive unit 6 for driving the gear group to rotate, and a swing rod assembly 2 having the same number as the massage heads. The swing rod assembly includes a swing rod body and a sliding member hinged to one end of the swing rod body. The swing rod body passes through the case and is hinged to the case. A massage head is fixed to the other end of the swing rod body. The gear group includes a drive gear 43 rotatably connected to the case. An irregular concave groove is provided on one end face of the drive gear, and a sliding member is provided in the irregular concave groove. The side wall of the sliding member is at least partially in contact with the groove wall of the irregular concave groove and is slidably fitted.

Description

Technical Field

[0001] The present invention relates to the technical field of healthcare appliances, and particularly to a head massager.

Background Art

[0002] Currently, commercially available head massagers are very popular among consumers because they are easy to use and convenient to carry. A head massager is a massage tool that can relieve headaches, eliminate anxiety and stress, improve the quality of sleep, and relieve eye fatigue. When corresponding lotion is added, it can further play a role in promoting hair growth.

[0003] The massage methods of existing head massagers are various. Many of them perform massage by vibrating or the rod swinging, and the movement mode of the massage head in the head massager is mainly rotating and pivoting. Through use and investigation, it is found that the head massagers adopting the above massage methods need to improve both the massage intensity and comfort, and are not very suitable for head massage. When some massagers massage the head, it will even make the head more uncomfortable, and then cause the phenomenon that the head becomes heavy and painful, resulting in poor head massage effect.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a head massager that makes the massage head reciprocally swing, improves the massage intensity and comfort, and enhances the effect of head massage.

Means for Solving the Problems

[0005] To achieve this object, the present invention A head massager comprising a case, a transmission assembly partially protruding from the case, and several massage heads provided outside the case, wherein the transmission assembly is used to drive the massage heads to swing. The transmission assembly includes a gear group, a drive unit for driving the gear group to rotate, and several swing rod assemblies with the same number as the massage heads. Each swing rod assembly includes a swing rod body hinged to the case through the case and a sliding member hinged to one end of the swing rod body. One massage head is fixed to the other end of each swing rod body. The gear group is rotatably connected to the case and includes drive gears with the same number as the swing rod assemblies and provided with irregular concave grooves on one end face. One sliding member is provided in each irregular concave groove. The side wall of the sliding member is at least partially in contact with the groove wall of the irregular concave groove and is slidably fitted therewith, so that the sliding member reciprocates along a straight line direction. The axis of the drive gear and the length direction of the swing rod body are located in the same plane. The technical solution of the head massager is adopted.

[0006] As a preferred technical solution of the head massager, the sliding member includes a swing tube and two position regulating convex columns fixed to the outer wall of the swing tube and symmetrically provided with respect to the axis of the swing tube. One end of the swing rod body is arranged in the swing tube, and the insertion pin penetrates through the swing tube and is hinged to the swing rod body so that the swing rod body swings along the axis of the insertion pin. The axis of the insertion pin is perpendicular to the axis of the swing tube and perpendicular to the length direction of the position regulating convex column.

[0007] As a preferred technical solution of the head massager, the projection of the irregular concave groove in a plane perpendicular to the depth direction of the irregular concave groove presents a three-leaf shape and is coaxial with the drive gear, and the projection of the sliding member in a plane perpendicular to the height direction of the sliding member presents a spindle shape.

[0008] As a preferred technical solution of the head massager, three sub-grooves, which are uniformly distributed along the rotation center of the driving gear and have a U-shaped shape, are formed on the groove wall of the irregular concave groove.

[0009] As a preferred technical solution of the head massager, the ends of the two position-limiting convex columns always contact the groove wall of the irregular concave groove, and the outer wall of the swing tube always partially abuts against the groove wall of the irregular concave groove.

[0010] As a preferred technical solution of the head massager, the case is provided with case through-holes, the number of which is the same as that of the swing rod body and on the inner wall of which guide shafts are convexly provided. The middle part of each swing rod body passes through one of the case through-holes and is hinged to one of the guide shafts, so that the swing rod body swings along the axis of the guide shaft.

[0011] As a preferred technical solution of the head massager, the case includes a case cover and a case seat removably connected to the case cover. The case through-hole is formed in the case cover. The drive unit is removably connected to the case seat. Several rotating shafts are fixed to the case seat. The gear group is rotatably connected to the case seat via the rotating shafts. The length direction of the rotating shafts is parallel to the output shaft of the drive unit.

[0012] As a preferred technical solution of the head massager, the gear group further includes a driving gear and a two-stage gear. The number of the two-stage gears is the same as that of the driving gears and they correspond one by one. The output shaft of the drive unit is coaxially fixed to the driving gear. The drive unit is used to move the driving gear to rotate along its own axis. The driven tooth parts of all the two-stage gears mesh with the driving gear, and the driving tooth parts of each two-stage gear mesh with one of the driving gears.

[0013] As a preferred technical solution of the head massager, the number of the driving gears is an even number, the gear group further includes two worm wheels, a worm and two stepped gears, the output shaft of the driving unit is coaxially fixed to the worm, and the worm is used to be moved to rotate along its own axis. The two worm wheels are located on both sides of the worm and mesh with the worm. The two stepped gears mesh with the two worm wheels respectively. Each of the stepped gears is used to drive half of the driving gears.

[0014] As a preferred technical solution of the head massager, the number of the driving gears is four. The two driving gears driven by each of the stepped gears are located on both sides of the corresponding stepped gear respectively. The axes of all the swing rod bodies hinged to the case are parallel to each other. The rotation directions of the two driving gears driven by the same stepped gear are opposite. The rotation directions of the two driving gears driven by different stepped gears and located on the same straight line are opposite.

Advantages of the Invention

[0015] The beneficial effects of the present invention are as follows. Since the head massager adopts a design in which a swing rod body is driven by a driving gear, the driving unit can move the massage head to perform a reciprocating swinging head movement through the precise transmission of the gear group and the swing rod assembly. The head movement of the massage head can simulate the scratching of the scalp by a human hand, enhancing the user experience. Among them, the design in which the swing rod body is hinged to the case and the sliding member is hinged to one end of the swing rod body, in combination with the limitation that the axis of the driving gear and the length direction of the swing rod body are located in the same plane, enables the groove wall of the deformed concave groove to drive the swing rod body to regularly reciprocate linearly along the straight line direction by pushing the sliding member. The above transmission structure can effectively reduce the frictional force between the driving gear and the sliding member, reduce the power loss in the transmission process, avoid the occurrence of a situation where the swing rod assembly is stressed and does not work, and contribute to the realization of a high-intensity massage operation of the massage head. At the same time, the installation of the case realizes effective protection for the transmission assembly. The design of multiple driving gears and multiple swing rod assemblies enables the driving unit to simultaneously drive multiple massage heads, improving the operating efficiency. At the same time, it also contributes to planning the movement rules of all massage heads and realizing synchronous control of all massage heads. Through the above improvements, the optimization of the movement trajectory of the massage head is realized, improving the massage intensity and comfort of the head massager and enhancing the effect of head massage.

Brief Description of the Drawings

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Modes for Carrying Out the Invention

[0017] Hereinafter, with reference to the drawings, the technical solution of the present invention will be clearly and completely described. It is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained on the premise that those skilled in the art do not perform creative labor belong to the protection scope of the present invention.

[0018] In the description of the present invention, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is merely for facilitating the description of the present invention and simplifying the description, and does not indicate or imply that such a device or element must have a specific orientation and be configured and operated in a specific orientation. Therefore, it cannot be understood as limiting the present invention. Also, the terms "first" and "second" are merely for the purpose of description and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions. Further, when the first feature is "above", "upper" and "upper surface" of the second feature, it includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. When the first feature is "below", "lower" and "lower surface" of the second feature, it includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the horizontal height of the first feature is lower than that of the second feature.

[0019] In the description of the present invention, unless otherwise clearly defined and limited, the terms "attach", "connect", "join" should be understood in a broad sense. For example, it may be a fixed connection, a removable connection, or an integral one, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a communication inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.

[0020] Hereinafter, embodiments of the present invention will be described in detail. The examples of the described embodiments are shown in the drawings, in which the same or similar reference numerals from beginning to end indicate the same or similar elements, or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are merely for interpreting the present invention and cannot be understood as limiting the present invention.

[0021] As shown in FIGS. 1 to 6, this embodiment provides a head massager including a case, a transmission assembly, and several massage heads 1. The massage heads 1 are provided outside the case. The transmission assembly partially projects from the case and is used to drive the massage heads 1 to swing. The transmission assembly includes a gear group 4, a drive unit 6, and several swing rod assemblies 2. The drive unit 6 is used to drive the gear group 4 to rotate. The number of swing rod assemblies 2 is the same as that of the massage heads 1. The swing rod assembly 2 includes a swing rod body 21 and a sliding member 23 hinged to one end of the swing rod body 21. The swing rod body 21 passes through the case and is hinged to the case. One massage head 1 is fixed to the other end of each swing rod body 21. The gear group 4 includes a drive gear 43 rotatably connected to the case. The number of drive gears 43 is the same as that of the swing rod assemblies 2. An irregular concave groove 431 is provided on one end face of the drive gear 43. One sliding member 23 is provided in each irregular concave groove 431. By at least partially abutting against the groove wall of the irregular concave groove 431 and being slidably fitted, the side wall of the sliding member 23, the sliding member 23 reciprocates along the linear direction. The axis of the drive gear 43 and the length direction of the swing rod body 21 are located in the same plane.

[0022] Since the head massager adopts a design in which the swing rod body 21 is driven by the drive gear 43, the drive unit 6 can move the massage head 1 to perform a reciprocating swinging head movement through the precise transmission of the gear group 4 and the swing rod assembly 2. The head movement of the massage head 1 can simulate the scratching of the scalp by a human hand, enhancing the user experience. Among them, the design in which the swing rod body 21 is hinged to the case and the sliding member 23 is hinged to one end of the swing rod body 21, in combination with the limitation that the axis of the drive gear 43 and the length direction of the swing rod body 21 are located in the same plane, enables the groove wall of the deformed concave groove 431 to push the sliding member 23 to drive the swing rod body 21 to regularly reciprocate linearly along a straight line direction. The above transmission structure effectively reduces the frictional force between the drive gear 43 and the sliding member 23, reduces the power loss in the transmission process, avoids the occurrence of a situation where the swing rod assembly 2 is stressed and fails to work, and contributes to the realization of a high-intensity massage operation of the massage head 1. At the same time, the installation of the case realizes effective protection for the transmission assembly. The design of a plurality of drive gears 43 and a plurality of swing rod assemblies 2 realizes the simultaneous drive of a plurality of massage heads 1 by the drive unit 6, improves the operating efficiency, and also contributes to planning the movement rules of all the massage heads 1 and realizing synchronous control of all the massage heads 1. Through the above improvements, the optimization of the movement trajectory of the massage head 1 is realized, improving the massage intensity and comfort of the head massager and enhancing the effect of head massage.

[0023] In this embodiment, the sliding member 23 includes a swing tube 232 and two position-limiting convex columns 231 fixed to the outer wall of the swing tube 232. The two position-limiting convex columns 231 are symmetrically provided with respect to the axis of the swing tube 232. One end of the swing rod body 21 is disposed within the swing tube 232. The insertion pin 22 penetrates and is connected to the swing tube 232 and is hinged to the swing rod body 21, so that the swing rod body 21 swings along the axis of the insertion pin 22. The axis of the insertion pin 22 is perpendicular to the axis of the swing tube 232 and perpendicular to the length direction of the position-limiting convex column 231.

[0024] Since the swing rod body 21 and the sliding member 23 realize the fitting of hinge connection via the insertion pin 22, the swing rod body 21 can swing along the axis of the insertion pin 22, and the sliding member 23 can reciprocate in the linear direction.

[0025] By limiting the positions of the swing tube 232 and the two position-limiting convex columns 231, while planning the contact position between the sliding member 23 and the groove wall of the deformed concave groove 431, reducing the production cost of the sliding member 23, reducing the space occupied by the sliding member 23, and by restricting the position of the insertion pin 22 with respect to its axis, the force-receiving situation of the swing rod assembly 2 is improved, the risk of damage to the swing rod assembly 2 is reduced, and the specific structure of the swing rod assembly 2 is simplified. Thereby, it is ensured that the swing rod assembly 2 completes the preset operation regularly, avoiding the situation where the swing rod assembly 2 fails to work, and it can be ensured that the massage head 1 can move smoothly. At the same time, the design of being hinge-connected and fitted to each other by the insertion pin 22 is simple and reliable, has a long service life, high operating stability, and a small occupied space.

[0026] When assembling the swing rod assembly 2, one end of the swing rod body 21 is inserted into the swing tube 232, and the insertion pin 22 is passed through the sliding member 23 and then through the swing rod body 21, so that the swing rod body 21 is hinge-connected to the sliding member 23. On the other hand, since the outer diameter of the insertion pin 22 is smaller than the aperture diameter of the opening in the swing rod body 21, the swing rod body 21 can perform relative movement along with the swing of the sliding member 23.

[0027] As shown in FIGS. 5 to 10, the projection of the irregular concave groove 431 in a plane perpendicular to the depth direction of the irregular concave groove 431 presents a three-leaf shape, and the irregular concave groove 431 is coaxial with the drive gear 43. The projection of the sliding member 23 in a plane perpendicular to the height direction of the sliding member 23 presents a spindle shape. Due to the limitation of the above structure, the shape limitation of the irregular concave groove 431 and the sliding member 23 is realized, the purpose of optimizing the movement locus of the swing rod body 21 is achieved, the movement space of the swing rod assembly 2 is limited, thereby improving the transmission method between the gear group 4 and the swing rod assembly 2 and simplifying the specific structure of the head massager.

[0028] Exemplarily, three sub-grooves are opened on the groove wall of the irregular concave groove 431. The three sub-grooves are uniformly distributed along the rotation center of the drive gear 43, and the shape of the sub-groove is U-shaped. Specifically, the three sub-grooves are distributed in pairs at an angle of 120°. Due to the limitation of the above shape, the specific structure of the irregular concave groove 431 is subdivided, the smooth fitting between the sliding member 23 and the irregular concave groove 431 is ensured, and the long-term stable operation of the head massager is ensured.

[0029] Furthermore, the ends of the two position regulating convex columns 231 always contact the groove wall of the irregular concave groove 431, and the outer wall of the swing tube 232 always partially abuts against the groove wall of the irregular concave groove 431. Due to the above limitation, the precise fitting between the drive gear 43 and the sliding member 23 is realized, the risk of the sliding member 23 being accidentally displaced is reduced, and the long-term stable transmission between the gear group 4 and the swing rod assembly 2 is ensured. At the same time, the above improvement further contributes to the optimization of the structural layout of the gear group 4 and the swing rod assembly 2, is beneficial to the reduction of the space occupied by the head massager, and contributes to the realization of the optimization of the structure of the head massager.

[0030] In this embodiment, a case through hole 31 is opened in the case. The number of the case through holes 31 is the same as that of the swing rod bodies 21. A guide shaft 32 is convexly provided on the inner wall of the case through hole 31. The middle part of each swing rod body 21 passes through one case through hole 31 and is hinged to one guide shaft 32, so that the swing rod body 21 swings along the axis of the guide shaft 32.

[0031] By providing the case through-hole 31 and the guide shaft 32, the hinge connection between the case and the swing rod body 21 is realized, ensuring that the swing rod body 21 can swing smoothly along the axis of the guide shaft 32. The above design is simple and reliable, occupies a small space, has high connection stability, and guarantees the long-term stable operation of the swing rod assembly 2.

[0032] Continuing to refer to FIGS. 1 to 6, the case includes a case cover 3 and a case seat 5 removably connected to the case cover 3. The case through-hole 31 is formed in the case cover 3. The drive unit 6 is removably connected to the case seat 5. Several rotating shafts are fixed to the case seat 5. The gear group 4 is rotatably connected to the case seat 5 via the rotating shaft, and the length direction of the rotating shaft is parallel to the output shaft of the drive unit 6.

[0033] The installation of the case cover 3 and the case seat 5 realizes the split design of the case, reduces the production cost of the case, reduces the assembly difficulty of the head massager, and realizes the optimized design of the structure for the head massager by combining the limitation that the case through-hole 31 is formed in the case cover 3 and the drive unit 6 and the gear group 4 are attached to the case seat 5. On the other hand, the limitation that the length direction of the rotating shaft is parallel to the output shaft of the drive unit 6 guarantees the transmission effect of the gear group 4, simplifies the specific structure of the gear group 4, reduces the space occupied by the gear group 4 in the case, and contributes to the realization of the lightweight design of the head massager.

[0034] In this embodiment, the drive unit 6 and the gear group 4 are installed in the case. After inserting the sliding member 23 and the swing rod body 21 and connecting them with the pin 22, they are installed in the drive gear 43. Then the case cover 3 is closed, and finally all the massage heads 1 are installed. Specifically, the drive unit 6 is a motor.

[0035] Exemplarily, the head massager further includes a battery mounted in the case and a button for controlling the on / off power between the battery and the drive unit 6. When the button is turned on, the battery activates the motor via the main board, and the motor can move to rotate the gear group 4. When the drive gear 43 rotates, the swing rod body 21 makes a reciprocating motion of swinging back and forth left and right. At this time, the swing rod body 21 can move the massage head 1 to make a reciprocating motion of swinging back and forth left and right. When the button is turned off, the motor is powered off. At this time, the gear group 4, the swing rod assembly 2, and the massage head 1 stop operating.

[0036] In one embodiment of this example, the gear group 4 further includes a driving gear 41 and a two-stage gear 42. The number of the two-stage gears 42 and the drive gears 43 is the same and they correspond one-to-one. The output shaft of the drive unit 6 is coaxially fixed to the driving gear 41. The drive unit 6 is used to move the driving gear 41 to rotate along its own axis. The driven tooth parts of all the two-stage gears 42 mesh with the driving gear 41, and the driving tooth parts of each two-stage gear 42 mesh with one drive gear 43. Specifically, the number of the drive gears 43 is four.

[0037] By providing the driving gear 41 and the two-stage gear 42, the purpose of the transmission of the gear group 4 is satisfied, the precise drive of each drive gear 43 by the drive unit 6 is realized, and further, it is ensured that the swing rod assembly 2 can drive the massage head 1 according to a preset trajectory, so that the head shaking operation of the massage head 1 is completed, and the stable operation of the head massager can be realized. The above structure is simple and reliable, has a good transmission effect, occupies a small space, and ensures the efficient and stable operation of the gear group 4.

[0038] Specifically, the rotation directions of the drive gear 43 and the driving gear 41 are the same, the rotation directions of the two-stage gear 42 and the driving gear 41 are opposite, and the rotation directions of the drive gear 43 and the two-stage gear 42 are opposite.

[0039] Furthermore, within the plane in which any one of the swing rod bodies 21 swings with respect to the case, there are further the axis of the corresponding drive gear 43, the axis of the corresponding two-stage gear 42, and the axis of the drive gear 41.

[0040] By the above position limitation, the relative positional relationship between the swing rod assembly 2 and the corresponding drive gear 43, the corresponding two-stage gear 42, and the drive gear 41 is planned, the transmission effect is ensured, the occupied space is reduced, the risk that does not work between the swing rod assembly 2 and the gear group 4 appears is avoided, and the smooth transmission of the massage head 1 by the drive unit 6 is ensured.

[0041] Specifically, all the swing rod bodies 21 all swing synchronously approaching or separating from the drive gear 41, and the included angle between each swing rod body 21 and the axis of the drive gear 41 is always kept unchanged.

[0042] When the drive gear 43 rotates, the groove wall of the deformed concave groove 431 pushes the sliding member 23 to move towards the drive gear 41 or away from the drive gear 41. Since the swing rod body 21 and the case cover 3 are hinged together, the swing rod body 21 can only move along with the movement of the sliding member 23. As a result, the massage head 1 swings away from or towards the axis of the drive gear 41. When the sliding member 23 is pushed to the limit position by the drive gear 43, at this time, the massage head 1 also swings to the limit position. Specifically, the included angle between the two limit positions where the swing rod body 21 swings is 30°, and the limit positions where the swing rod body 21 swings are adjustable according to needs.

[0043] The rotating shaft includes a first rotating shaft 61 and a second rotating shaft 62. The number of the first rotating shafts 61 is the same as that of the two-stage gears 42, and each two-stage gear 42 is rotatably connected to one first rotating shaft 61. Each two-stage gear 42 rotates along the axis of the corresponding first rotating shaft 61. The number of the second rotating shafts 62 is the same as that of the driving gears 43, and each driving gear 43 is rotatably connected to one second rotating shaft 62. Each driving gear 43 rotates along the axis of the corresponding second rotating shaft 62.

[0044] As shown in FIGS. 1, 6, and 11, in another embodiment of the present embodiment, the number of the driving gears 43 is an even number. The gear group 4 further includes two worm wheels 44, a worm 45, and two two-stage gears 42. The output shaft of the driving unit 6 is coaxially fixed to the worm 45. The driving unit 6 is used to move the worm 45 to rotate along its own axis. The two worm wheels 44 are located on both sides of the worm 45 and mesh with the worm 45. The two two-stage gears 42 mesh with the two worm wheels 44 respectively. Each two-stage gear 42 is used to drive half of the driving gears 43.

[0045] By providing the two worm wheels 44, the worm 45, and the two-stage gears 42, the purpose of the transmission of the gear group 4 can be satisfied. The transmission method in which the worm wheel 44 and the worm 45 are engaged has high transmission efficiency and occupies a small space. By providing the two-stage gears 42 and the worm wheels 44 between the driving gears 43 and the worm 45, all the driving gears 43 can be divided, and further all the driving gears 43 can be divided into two groups with different rotation directions. The above limitations contribute to the realization of the distinction in the operations between different swing rod assemblies 2, contribute to the realization of the optimization of the head swinging operation of the massage head 1, are advantageous for the realization of the optimized design of the head massager, and can further enhance the user experience. The above structure is simple and reliable, has good transmission effect and occupies a small space, and guarantees the efficient and stable operation of the gear group 4.

[0046] Furthermore, the number of drive gears 43 is four. The two drive gears 43 that can be moved by each two-stage gear 42 are respectively located on both sides of the corresponding two-stage gear 42. The axes around which all the swing rod bodies 21 hinged to the case swing are all parallel to each other. The rotation directions of the two drive gears 43 that can be moved by the same two-stage gear 42 are opposite. The rotation directions of the two drive gears 43 that can be moved by different two-stage gears 42 and are located on the same straight line are opposite.

[0047] With the above limitations, the laying positions of the respective swing rod assemblies 2 are planned, the movement trajectories of the respective massage heads 1 are adjusted, contributing to the further improvement of the structure of the head massager. By coordinating with the plan regarding the rotation direction of the drive gear 43, it contributes to the adjustment of the operation mode of the massage head 1 and the improvement of the massage effect of the head massager.

[0048] It is obvious that the above embodiments of the present invention are merely examples given for clearly explaining the present invention and do not limit the embodiments of the present invention. A person skilled in the art can make other different forms of changes or variations based on the above description. Here, there is no need and no way to list all the embodiments. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Explanation of Reference Numerals

[0049] 1... massage head, 2... swing rod assembly, 21... swing rod body, 22... insertion pin, 23... sliding member, 231... position regulating convex column, 232... swing tube, 3... case cover, 31... case through hole, 32... guide shaft, 4... gear group, 41... driving gear, 42... two-stage gear, 43... drive gear, 431... deformed concave groove, 44... worm wheel, 45... worm, 5... case seat, 6... drive unit, 61... first rotating shaft, 62... second rotating shaft.

Claims

1. A head massager comprising a case, a transmission assembly partly extending from the case, and several massage heads (1) provided outside the case, the transmission assembly being used to drive the massage heads (1) to oscillate, The transmission assembly comprises a gear set (4), a drive unit (6) for driving the gear set (4) to rotate, and a number of oscillating rod assemblies (2) whose number is the same as that of the massage heads (1); The swing rod assembly (2) includes a swing rod body (21) that passes through the case and is hinged to the case, and a sliding member (23) that is hinged to one end of the swing rod body (21). Each of the swing rod bodies (21) has one massage head (1) fixed to the other end. The gear group (4) is rotatably connected to the case, and includes a driving gear (43) having the same number as the oscillating rod assembly (2) and an irregular groove (431) on one end surface thereof, and each irregular groove (431) is provided with one of the sliding members (23). The side wall of the sliding member (23) is at least partially abutted against the groove wall of the irregular groove (431) and slidably fitted therein, so that the sliding member (23) reciprocates along a linear direction, and the axis of the driving gear (43) and the longitudinal direction of the oscillating rod body (21) are located in the same plane. A head massager characterized by the above.

2. The sliding material (23) comprises a swing tube (232) and two position-regulating protruding columns (231) fixed to the outer wall of the swing tube (232) and arranged symmetrically with respect to the axis of the swing tube (232). One end of the swing rod body (21) is disposed within the swing tube (232). A stud (22) is connected to the swing tube (232) through which it penetrates and is hingedly connected to the swing rod body (21) so that the swing rod body (21) swings along the axis of the stud (22). The axis of the stud (22) is perpendicular to the axis of the swing tube (232) and perpendicular to the longitudinal direction of the position-regulating protruding column (231).

2. The head massager according to claim 1.

3. The irregular groove (431) has a trefoil shape when projected in a plane perpendicular to the depth direction of the irregular groove (431) and is coaxial with the driving gear (43). The sliding member (23) has a spindle shape when projected in a plane perpendicular to the height direction of the sliding member (23).

3. The head massager according to claim 2.

4. The groove wall of the irregular groove (431) is provided with three sub-grooves, which are uniformly distributed along the rotation center of the driving gear (43) and have a U-shape.

4. The head massager according to claim 3.

5. the ends of the two position-regulating protrusions (231) always contact the groove wall of the irregular groove (431), and the outer wall of the swing tube (232) always partially abuts against the groove wall of the irregular groove (431); 4. The head massager according to claim 3.

6. The case has case through holes (31) whose number is the same as the number of the swing rod bodies (21), and guide shafts (32) are protruding from the inner walls thereof. The center of each of the swing rod bodies (21) passes through one of the case through holes (31) and is hingedly connected to one of the guide shafts (32), so that the swing rod bodies (21) swing along the axis of the guide shafts (32).

2. The head massager according to claim 1.

7. The case comprises a case cover (3) and a case seat (5) removably connected to the case cover (3), the case through hole (31) is opened in the case cover (3), the drive unit (6) is removably connected to the case seat (5), several rotating shafts are fixed to the case seat (5), the gear group (4) is rotatably connected to the case seat (5) via the rotating shafts, and the longitudinal direction of the rotating shafts is parallel to the output shaft of the drive unit (6).

7. The head massager according to claim 6.

8. The gear group (4) further comprises a main gear (41) and a two-stage gear (42), the two-stage gears (42) and the driving gears (43) are the same in number and in one-to-one correspondence, the output shaft of the drive unit (6) is coaxially fixed to the main gear (41), the drive unit (6) is used to move the main gear (41) to rotate along its axis, all the driven teeth of the two-stage gears (42) mesh with the main gear (41), and all the driven teeth of the two-stage gears (42) mesh with one of the driving gears (43).

8. The head massager according to claim 1, wherein the head massager is a massager for massage a head of a user.

9. the number of the drive gears (43) is an even number, the gear group (4) further comprises two worm wheels (44), a worm (45) and two double-stage gears (42), the drive unit (6) has an output shaft coaxially fixed to the worm (45) and is used to move the worm (45) to rotate along its axis, the two worm wheels (44) are located on both sides of the worm (45) and mesh with the worm (45), the two double-stage gears (42) mesh with the two worm wheels (44), respectively, and each of the double-stage gears (42) is used to move half of the drive gears (43); 8. The head massager according to claim 1, wherein the head massager is a massager for massage a head of a user.

10. The number of the drive gears (43) is four, and the two drive gears (43) moved by each of the two-stage gears (42) are located on both sides of the corresponding two-stage gear (42), the axes along which all of the oscillating rod bodies (21) hingedly connected to the case oscillate are all parallel to each other, the two drive gears (43) moved by the same two-stage gear (42) rotate in opposite directions, and the two drive gears (43) moved by different two-stage gears (42) and located on the same straight line rotate in opposite directions.

10. The head massager according to claim 9.

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