Transmission structure and hair removing device

Abstract

The utility model relates to the technical field of trimming tools, in particular to a transmission structure and a hair removing device, and solves the matching problem between an existing eccentric wheel and a sliding groove, the transmission structure comprises a first-stage transmission assembly and a swing arm assembly, the first-stage transmission assembly comprises an eccentric assembly, a sliding block and a sliding groove, the sliding block is arranged between the eccentric assembly and the sliding groove, and the swing arm assembly is arranged in the sliding groove. The sliding groove is arranged to allow the sliding block to slide in the length direction of the sliding groove and drive the sliding groove to move in the width direction, the sliding groove is fixed to the swing arm assembly so that the swing arm assembly can be driven to swing while the sliding groove moves, and the sliding block forms linkage and cooperation between the eccentric assembly and the sliding groove. The transmission structures are matched more tightly, driving among parts is smoother, and when the transmission structure is applied to the hair removing device, generated noise is relatively small, and energy loss is small.

Description

Technical Field

[0001] The utility model relates to the technical field of trimming tools, in particular to a transmission structure and a hair removal device. Background Art

[0002] Basically, the traditional reciprocating shaver changes the rotary motion of the motor into a reciprocating motion through a swing mechanism to drive the cutter head assembly installed on the swing mechanism to realize shaving and trimming of hair. On this basis, Chinese invention application CN117817720A discloses a swing mechanism of a reciprocating electric shaver and the reciprocating electric shaver, which drives an eccentric wheel through a driving motor and directly cooperates with a chute on a swing frame through the eccentric wheel to drive the swing frame to swing left and right.

[0003] The above structure has the following problems: 1. The cooperation between the eccentric wheel and the chute is not tight enough, and the friction between the two is large, the energy loss is serious, and the generated noise is relatively large; 2. The two swing arms move at the same horizontal height, resulting in the swing arms not having the function of floating up and down; 3. The two swing arms move in the same direction. Since the swing arm structure swings to the extreme point, due to inertia, the entire product including the swing arm structure is displaced in the corresponding direction of the swing arm swing. Especially for the swing arm under high-speed movement, the whole product will have an obvious sense of vibration, thus affecting the use comfort of the product.

[0004] Based on this, this solution designs a new transmission structure. Summary of the Utility Model

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a transmission structure and a hair removal device to solve the cooperation problem between the existing eccentric wheel and the chute.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: a transmission structure, including a primary transmission component and a swing arm component. The primary transmission component includes an eccentric component, a slider and a chute. The slider is arranged between the eccentric component and the chute. The chute is arranged as a groove that allows the slider to slide within the length direction of the chute and drive the chute to move in the width direction. The chute is fixed on the swing arm component to drive the swing arm component to swing while the chute moves.

[0007] By adopting the above technical solution, the slider forms a linkage and cooperation between the eccentric component and the chute, making the cooperation between the transmission structures closer, the driving between components smoother, generating relatively less noise and less energy loss, and forming a good cooperation structure.

[0008] Furthermore, the swing arm assembly includes a main swing arm and a secondary swing arm. The chute is fixed to the main swing arm. The main swing arm and the secondary swing arm are linked by a bogie vertically arranged, driving the secondary swing arm to move in the direction opposite to that of the main swing arm.

[0009] By adopting the above technical solution, compared with the traditional linkage of the main swing arm and the secondary swing arm through a horizontally arranged connecting rod, the connection between the main swing arm and the secondary swing arm in this solution is an up-and-down connection. The cooperation between the two is tight, and the synchronization of the alternating reciprocating motion is high, thereby improving the component synergy, reducing wear and noise. The reverse movement of the main swing arm and the secondary swing arm can cancel out inertia with each other and reduce vibration.

[0010] Furthermore, the transmission structure is installed through the frame.

[0011] By adopting the above technical solution, the frame provides support for the transmission structure.

[0012] Furthermore, the center of the bogie is rotatably connected to the frame, and the upper and lower ends of the bogie are respectively rotatably connected to the main swing arm and the secondary swing arm.

[0013] By adopting the above technical solution, the frame provides a support point for the installation of the bogie. Since the center point of the bogie is fixed and the distances from the two ends of the bogie to the center point are the same, on this basis, the two ends of the bogie rotate around the center point, driving the main swing arm and the secondary swing arm to perform an arc-shaped movement of small up-and-down floating and swinging in the left and right directions. The swinging arcs of the main swing arm and the secondary swing arm are the same. Compared with the installation method without support or with the support point not at the center point of the bogie, the up-and-down floating range of the main swing arm and the secondary swing arm during swinging is smaller in this solution.

[0014] Furthermore, an elastic buffer assembly is provided between the frame and the swing arm assembly.

[0015] By adopting the above technical solution, the buffer assembly keeps the assembly of each part in a tensioned state, eliminates cumulative tolerances and wobbling, makes the connection tighter, and reduces braking and noise.

[0016] Furthermore, rolling elements that can rotate relative to the slider are provided on the side surface of the slider in contact with the chute, and the rolling elements protrude beyond the surface of the slider.

[0017] By adopting the above technical solution, the rolling elements form rolling friction between the slider and the chute, reduce the wear between components, provide a more precise and smooth mating movement, and meet the noise reduction requirements.

[0018] Furthermore, the slider includes a cage, a rolling support, and a pressing plate. An insertion assembly is provided between the cage and the rolling support for sleeving and fastened by the pressing plate. The rolling elements are rotatably limited between the cage and the rolling support.

[0019] By adopting the above technical solution, the slider is of a double-layer structure, with better strength and not easily deformed. And through the plug-in component, the cage and the rolling support maintain a high degree of fit and synchronization, and the pressing plate prevents the cage and the rolling support from disengaging.

[0020] Furthermore, the slider as a whole is of a square block structure. A circular connecting groove is arranged in the middle of the slider. A bearing is arranged in the connecting groove for connecting the eccentric component. The sliding groove is a long groove-shaped structure that is adapted to the slider in the width direction and has a length greater than the length of the slider.

[0021] By adopting the above technical solution, the circular connecting groove and the slider of the square block structure cooperate to convert the eccentric rotational motion in the circumferential direction into a linear motion, and drive the sliding groove to swing in the width direction under the action of the sliding groove.

[0022] Furthermore, a driving head component is arranged on the swing arm component, and the driving head component is detachably fixed to the swing arm component.

[0023] By adopting the above technical solution, it is possible to keep the swing arm component part unchanged, and only by replacing the driving head components of different shapes can it adapt to knives of different shapes, or multiple branch driving heads can drive multiple groups of knives. One set of molds can meet the knives in a variety of different usage scenarios, and the product has a wide range of applications.

[0024] Furthermore, a base for installing the driving head component is arranged on the swing arm component. The driving head component and the base are detachably fixed through a snap structure. The driving head component includes a main support, a positioning pin, a moving knife top block and a spring. The positioning pin passes through the main support and penetrates into the base. The moving knife top block is fixed on the top of the main support and confines the positioning pin within the driving head component. The spring is sleeved outside the positioning pin.

[0025] By adopting the above technical solution, a moving knife is installed on the driving head component, and the positioning pin penetrates through the driving head component and is fixed on the swing arm component, realizing the precise and stable fixation of the driving head component. The moving knife is fixed with this positioning pin as the center; the elastic force of the spring makes the moving knife keep pressing tightly against the fixed knife, ensuring effective shearing; and the gap caused by assembly and movement deviation can be eliminated.

[0026] A hair removal device includes a housing and the above transmission structure, and the transmission device is arranged inside the housing.

[0027] By adopting the above technical solution, the transmission device is applied to the hair removal device to realize component driving.

[0028] Furthermore, the transmission structure is connected to a power component as a separate motor module, and the motor module is integrally and detachably fixed inside the housing.

[0029] By adopting the above technical solution, the motor module, as a separately directly usable structure, can be applied to different products.

[0030] Compared with the prior art, the advantages of the present utility model are as follows: 1. The setting of the slider improves the traditional structure driven by an eccentric wheel and a chute, adjusts and coordinates between the eccentric assembly and the chute, makes the connection of components closer, the coordination more precise, and reduces the movement deviation; 2. The setting of the rolling elements on the surface of the slider makes the sliding smoother, reduces the friction between components and the energy loss, and achieves the purpose of reducing noise; 3. The main swing arm and the secondary swing arm are connected by a vertically arranged bogie and fixed by a frame, with close coordination and high synchronization; 4. The buffer assembly between the swing arm assembly and the frame eliminates the accumulated tolerance and shaking, makes the connection tighter, and reduces braking and noise; 5. The double-layer slider structure assembled by the cage, rolling support and pressing plate has higher strength and is not easily deformed; 6. By the replaceable drive head assembly, replacing drive head assemblies of different shapes can adapt to knives of different shapes, or drive head assemblies with multiple branches can drive multiple groups of knives; 7. The through shaft is extended to pass through the base and the drive head assembly, and the installation of the drive head assembly is more precise and stable; 8. The setting of the spring sleeved on the through shaft ensures that the moving blade presses the fixed blade when the transmission structure is applied to a shaver, and eliminates the gap caused by assembly and movement deviation; 9. Regarding the transmission structure and the power assembly as a separate motor module, it can be directly applied to a hair removal device, realizing modular assembly of the product and reducing the assembly difficulty; 10. The main swing arm and the secondary swing arm that move in an arc in the reverse direction realize product floating and offset the product vibration caused by the inertia of the reciprocating motion. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic exploded view of the present utility model.

[0032] Figure 2 It is a schematic structural view of the swing arm assembly of the present utility model in the first state.

[0033] Figure 3 It is a schematic structural view of the swing arm assembly of the present utility model in the second state.

[0034] Figure 4 It is a schematic structural view of the swing arm assembly of the present utility model in the third state.

[0035] Figure 5 It is a schematic top view of the swing arm assembly of the present utility model in the first state.

[0036] Figure 6 It is a sectional view of the swing arm assembly of the present utility model in the first state.

[0037] Figure 7 It is a schematic structural view of the slider of the present utility model.

[0038] Figure 8 This is a schematic diagram of the decomposed structure of the slider of the present utility model.

[0039] Figure 9 This is a schematic diagram of the structure of the eccentric component of the present utility model.

[0040] Figure 10 This is a schematic diagram of the cooperation structure between the slider and the main swing arm of the present utility model.

[0041] Figure 11 This is a schematic diagram of the decomposed structure of the drive head assembly of the present utility model.

[0042] Figure 12 This is a schematic diagram of the decomposed structure of the hair removal device of the present utility model.

[0043] Figure 13 This is a sectional view of the hair removal device of the present utility model.

[0044] Figure 14 This is a schematic diagram of the structure of the hair removal device of the present utility model.

[0045] In the figure: 1. Main swing arm, 1-1. Slide groove, 2. Drive head assembly, 3. Base, 4. Buckle structure, 5. Pressure plate, 6. Cage, 7. Positioning ring, 8. Slide block bracket, 9. Rolling element, 10. Eccentric component, 10-1. Upper block, 10-2. Lower block, 11. Bearing, 12. Shaft, 13. Bogie, 14. Output shaft, 15. Frame, 16. Auxiliary swing arm, 17. Buffer, 18. Limit structure;

[0046] 100. Slide block, 101. Connection groove;

[0047] 210. Coil assembly, 211. Coil, 212. Iron core, 220. Wire, 230. Permanent magnet, 240. Bracket, 250. Rotor housing;

[0048] 300. Housing, 301. Bottom cover plate, 302. Circuit board, 303. Battery, 304. Mounting rack, 305. Switch, 306. Waterproof ring, 307. Waterproof cover plate, 308. Motor waterproof ring, 309. Pressure plate, 310. Moving knife, 311. Fixed knife, 312. Knife holder, 313. Head cover, 314. Magnet, 315. Screw;

[0049] 400. Motor module. Specific embodiments

[0050] The present utility model will be further described in detail below in conjunction with the embodiments with reference to the accompanying drawings.

[0051] Embodiment 1: Consisting of Figures 1 to 10Provided is a transmission structure, including a primary transmission assembly and a swing arm assembly. The primary transmission assembly includes an eccentric assembly 10, a slider 100, and a chute 1-1. The swing arm assembly includes a main swing arm 1 and a secondary swing arm 16. The main swing arm 1 and the secondary swing arm 16 are linked by a vertically arranged bogie 13.

[0052] Based on the above embodiment, Figures 7 to 10 Provided that the slider 100 is a square block structure, and the chute 1-1 is a groove structure with a long strip-shaped space. The slider is arranged between the eccentric assembly and the chute. The slider 100 and the chute 1-1 are adapted in the width direction. The length of the chute 1-1 is greater than the length of the slider 100. When the slider 100 slides in the length direction, its movement is limited within the chute 1-1. At this time, the chute 1-1 provides a space for the slider 100 to move. However, when the slider 100 moves in the width direction, since there is no reserved space between the chute 1-1 and the slider 100, the slider 100 drives the chute 1-1 to move together in the width direction. The chute 1-1 is fixed to the main swing arm 1. The eccentric assembly 10 is driven by a power assembly to rotate and drive the slider 100 to move. The slider 100 moves and drives the chute and the main swing arm 1 fixed to the chute 1-1 to swing left and right. The main swing arm 1 drives the secondary swing arm 16 to swing in the direction opposite to the movement direction of the main swing arm 1 through the bogie 13.

[0053] Based on the above embodiment, a connecting groove 101 is arranged inside the slider 100. The connecting groove 101 is a circular groove structure. A bearing 11 is installed in the connecting groove 101. The eccentric assembly 10 is connected through the bearing 11. The eccentric assembly 10 is connected to the output shaft 14 of the power assembly. Driven by the power assembly, a force for eccentric movement is provided for the slider 100 to drive the slider 100 to move. The eccentric assembly 10 includes an upper block 10-1 and a lower block 10-2 arranged up and down and with non-corresponding axes. The output shaft 14 is connected to the lower block 10-2. The upper block 10-1 is connected to the inner hole of the bearing 11. The outer wall of the bearing 11 is fixed to the connecting groove 101.

[0054] Embodiment 2: Based on the above embodiment, Figure 1 、 Figures 7 to 8 Provided that rolling elements 9 are respectively arranged on the surfaces of the slider 100 that are in contact with the inner wall of the chute, and the rolling elements 9 protrude beyond the surface of the slider 100.

[0055] Embodiment 3: Based on Embodiment 2, Figure 8Given that the slider 100 includes a cage 6 and a rolling support 8. A space for accommodating the rolling support 8 is provided on the cage 6. Plug-in components are respectively arranged at each corner position between the cage 6 and the rolling support 8. Each plug-in component includes a corresponding slot and a plug. The slot is provided on the cage 6, and the plug is provided on the rolling support 8. The cage 6 is sleeved outside the rolling support 8 through the plug-in components. The plug extends beyond the slot and is connected by a pressure plate 5 with a card slot. The position of the card slot on the pressure plate 5 is adapted to the plug, pressing the cage and the rolling support tightly to prevent the two from floating up and down and separating, which may affect the limit of the rolling element 9.

[0056] On the basis of the above embodiment, an installation groove 9-1 for installing the rolling element 9 is provided on the cage 6. The installation groove 9-1 opens respectively towards the inside and outside of the slider. The opening of the installation groove towards the outer surface of the slider is smaller than the maximum diameter of the rolling element to limit the rolling element. The rolling element 9 is limited within the installation groove 9-1 and rolls with the outer surface of the rolling support 8 as the support surface. Each rolling element 9 can be disassembled and assembled through the socket connection between the cage and the rolling support.

[0057] The difference from the above embodiment is that the cage 6 and the rolling support 8 can be sleeved through the plug-in components by providing slots on the cage 6 and plugs on the rolling support.

[0058] On the basis of Embodiment Three, Figures 7 to 8 Given that the rolling element 9 is a cylindrical roller or needle roller. The height of the rolling element is not limited by the rolling diameter. Correspondingly, a plurality of installation grooves 9-1 are arranged in an array along the length direction on the side surface of the cage 6, and each installation groove 9-1 extends in the height direction of the slider 100.

[0059] The difference from the above embodiment is that Figure 1 Given that the rolling element 9 is a spherical ball. Correspondingly, the installation grooves 9-1 can be arranged in multiple rows and columns on the side surface of the cage 6 according to the height of the slider 100.

[0060] Embodiment Four, on the basis of Embodiment One, Figures 1 to 6 Given that the transmission structure is installed through a frame 15. Extension wings for installing the bogie 13 are respectively provided at both ends of the frame 15. The center of the bogie 13 is rotatably connected to the extension wings of the frame 15. The upper and lower ends of the bogie 13 are respectively rotatably connected to the main swing arm 1 and the sub-swing arm 16. The bogie 13 is arranged on both sides of the main swing arm and the sub-swing arm. An opening groove for accommodating the lower end of the sub-swing arm is formed on each extension wing.

[0061] On the basis of the above embodiments, the bogie 13 is rotatably connected to the main swing arm 1, the auxiliary swing arm 16, and the frame 15 through pivot structures respectively. The pivot structure includes a shaft 12 and a bearing 11. One end of the shaft 12 is fixed to the bogie 13, and the other end penetrates into the inner hole of the bearing 11 and is connected to the swing arm structure or the frame 15 through the bearing 11.

[0062] Embodiment 5. On the basis of the above embodiments, Figure 1 , Figure 6 , Figure 12 are given. A buffer assembly is arranged between the frame 15 and the swing arm assembly. The frame 15 includes a support plane, and a limit structure 18 for positioning the buffer assembly is arranged on the swing arm structure. The limit structure includes a convex column and a groove. A limit hole that can be stuck in the groove and sleeved on the convex column is arranged on the buffer assembly.

[0063] On the basis of the above embodiments, the buffer assembly includes a plurality of independently arranged buffer members 17. Each of the buffer members 17 is correspondingly arranged between the two sides of the main swing arm and the frame and between the two sides of the auxiliary swing arm and the frame. The limit structure is arranged on the lower surfaces of the main swing arm and the auxiliary swing arm and the upper surface of the support plane respectively.

[0064] On the basis of the above embodiments, the buffer member 17 is a spring, and the inner hole of the spring serves as the limit hole.

[0065] The difference from the above embodiments is that the buffer member is a rubber block, and a concave hole corresponding to the limit structure is arranged on the rubber block as the limit hole.

[0066] Embodiment 6. On the basis of the above embodiments, Figure 1 , Figure 11 are given. A drive head assembly 2 is arranged on the swing arm assembly, and the drive head assembly 2 is detachably fixed to the swing arm assembly.

[0067] On the basis of the above embodiments, a base 3 for installing the drive head assembly 2 is arranged on the swing arm assembly. The drive head assembly 2 and the base 3 are detachably fixed through a buckle structure 4. The drive head assembly includes a main support 2-4, a positioning pin 2-1, a moving knife top block 2-2, and a spring 2-3. The positioning pin 2-1 passes through the main support 2-4 and penetrates into the base 3. The moving knife top block 2-2 is fixed at the top of the main support and confines the positioning pin 2-1 within the drive head assembly 2. The spring 2-3 is sleeved outside the positioning pin 2-1.

[0068] In the above embodiments, the bearing 11 is a ball bearing, and a positioning ring 7 is arranged at the connection of the bearing 11 and each component.

[0069] Embodiment 7. On the basis of the above embodiments, Figure 1Given that the power component is a motor, the motor includes a coil assembly 210, a permanent magnet 230, a bracket 240, a rotor housing 250, an output shaft 14, and a bearing 11. The rotor housing 250 and the bracket 240 adopt a cylindrical structure. The coil assembly 210 is a cylindrical structure formed by assembling a plurality of coils 211 and an iron core 212. There are a plurality of permanent magnets 230, and the plurality of permanent magnets 230 are arranged in a ring on the bracket 240 and are fixedly connected to the rotor housing 250 through the bracket 240. The coil assembly 210 is located inside the plurality of ring-shaped permanent magnets 230. The upper end of the output shaft 14 passes through the frame and is rotatably connected to the frame through the bearing 11, and its lower end is fixed at the center position of the bottom of the rotor housing 250. The motor is connected to the power component through a wire 220. After passing an electric current, the output shaft 14 rotates to drive the slider 100 to move.

[0070] Embodiment Eight: A hair removal device, comprising Figures 12 to 14 Given that it includes a housing 300, the entire structure of the above-mentioned power component driving the transmission structure is used as a motor module 400 independent of the housing 300. The motor module 400 is connected to a control module and a power module. The control module includes a circuit board 302 and a switch 305. The power module includes a battery 303 and a charging interface. A waterproof ring 306 is provided at the charging interface. An installation bracket 304 for installing the motor module 400 is provided inside the housing 300. A bottom cover plate 301 is provided at the bottom of the housing 300. A waterproof cover plate 307, a motor waterproof ring 308, and a pressing plate 309 are provided on the motor module 400, and it is connected to a knife assembly through a driving head assembly 2. The knife assembly includes a moving knife 310 and a fixed knife 311. A knife holder 312 is provided at the top of the housing 300. The knife assembly is located inside the knife holder 312. A head cover 313 is provided outside the knife holder 312. The motor module 400 is fixed to the installation bracket 304 and the housing 300 through screws 315.

[0071] Magnets 314 are respectively provided on the installation bracket 304, the switch 305, the waterproof cover plate 307, and the knife assembly of the hair removal device.

[0072] The working principle process of the present utility model is as follows: Denote the connection axis of each bogie 13 and the main swing arm as B, the connection axis of the bogie 13 and the auxiliary swing arm 16 as C, and the connection axis of the bogie 13 and the frame 15 as A. Under the action of the power component, the electric component and the control component, the driving slider 100 drives the main swing arm 1 to make reciprocating motions in the F and G directions; the main swing arm 1 drives the two vertically arranged bogies 13 to rotate synchronously around the axis A. When the bogie 13 rotates counterclockwise around the A axis, the main swing arm 1 swings in the F direction. The first state of the swing arm assembly is the state when the main swing arm swings to the leftmost position. When the bogie 13 rotates clockwise, the main swing arm 1 swings in the G direction. The second state of the swing arm assembly is the state when the main swing arm swings to the rightmost position. The third state of the swing arm assembly is the state when the main swing arm swings to the middlemost position. The two swing arms of the swing arm assembly move alternately in a reciprocating manner, driving the two driving head assemblies on the main swing arm 1 and the auxiliary swing arm 16 to move alternately in a reciprocating manner, realizing the reciprocation of the knife assembly in the hair removal device.

[0073] Principle of the eccentric component: Denote the axis of the upper block 10-1 as axis H, and the axis of the lower block 10-2 as axis I. The lower block 10-2 is fixed to the output shaft 14. When the output shaft 104 rotates, it drives the eccentric component to rotate around the axis I. The upper block 10-1 is inserted into the inner hole of the ball bearing, and the ball bearing rotates around the axis H. The axis H rotates around the axis I, thereby driving the entire slider 100 to rotate around the axis I, so as to provide a force for the eccentric motion of the slider 100 to drive the slider 100 to move. When the slider 100 moves relative to the chute, due to the presence of the rolling elements between the mating walls, the friction is small. Under the action of the chute, the circular motion of the slider is converted into a linear motion, realizing the conversion of the motion trajectory. In this solution, the slider 100 is a separate part and can be paired with a chute or other parts with a chute to realize swinging.

[0074] Although the preferred embodiments of the present utility model have been described in detail above, it should be clearly understood that various changes and modifications can be made to the present utility model for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Transmission structure, including a primary transmission assembly and a swing arm assembly, characterized in that, The primary transmission assembly includes an eccentric assembly, a slider, and a chute. The slider is disposed between the eccentric assembly and the chute. The chute is configured to allow the slider to slide within the length direction of the chute and drive the chute to move in the width direction. The chute is fixed to the swing arm assembly to cause the chute to move and drive the swing arm assembly to swing simultaneously.

2. The transmission structure according to claim 1, wherein, The swing arm assembly includes a main swing arm and a secondary swing arm. The chute is fixed to the main swing arm. The main swing arm and the secondary swing arm are linked by a vertically disposed bogie, which drives the secondary swing arm to move in the direction opposite to that of the main swing arm.

3. The drive structure according to claim 2, wherein, The transmission structure is mounted through a frame.

4. The drive structure according to claim 3, characterized in that The center of the bogie is rotatably connected to the frame. The upper and lower ends of the bogie are respectively rotatably connected to the main swing arm and the secondary swing arm.

5. The transmission structure according to claim 3, wherein An elastic buffer assembly is provided between the frame and the swing arm assembly.

6. The drive structure according to claim 1, wherein Rolling elements that can rotate relative to the slider are provided on the side surface of the slider in contact with the chute, and the rolling elements protrude beyond the surface of the slider.

7. The transmission structure according to claim 6, wherein, The slider includes a cage, a rolling support, and a pressing plate. An insertion assembly is provided between the cage and the rolling support for sleeving and is fastened by the pressing plate. The rolling elements are rollably confined between the cage and the rolling support.

8. The transmission structure according to claim 1, wherein, The slider is an overall square block structure. A circular connection groove is provided in the middle of the slider. A bearing is provided in the connection groove for connecting the eccentric assembly. The chute is a long groove-like structure that is adapted to the slider in the width direction and has a length greater than the length of the slider.

9. The transmission structure according to claim 1, wherein A drive head assembly is provided on the swing arm assembly, and the drive head assembly is detachably fixed to the swing arm assembly.

10. The transmission structure according to claim 1, characterized in that, A base for installing the drive head assembly is provided on the swing arm assembly. The drive head assembly and the base are detachably fixed through a snap structure. The drive head assembly includes a main support, a positioning pin, a moving knife top block, and a spring. The positioning pin passes through the main support and penetrates into the base. The moving knife top block is fixed to the top of the main support and confines the positioning pin within the drive head assembly. The spring is sleeved outside the positioning pin.

11. Hair removal device, including a housing, characterized in that, It further includes the transmission structure according to any one of claims 1-10, and the transmission structure is disposed within a housing.

12. The hair removal device according to claim 11, wherein, The transmission structure is connected to a power assembly as a separate motor module, and the motor module is integrally and detachably fixed within the housing.

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