A blade drive mechanism and a shaver

Abstract

This utility model relates to the field of shaver technology, and particularly to a shaver head transmission mechanism and a shaver. It includes a rotary driver, a transmission mechanism, and a swing arm for setting the shaver head. At least one swing arm is provided. The rotary driver includes a housing and an output shaft. The number of transmission mechanisms corresponds to the number of swing arms. The transmission mechanism includes an eccentric wheel and a connecting rod. The eccentric wheel includes a wheel body and an eccentric shaft at one end of the wheel body. The wheel body is connected to the output shaft. One end of the connecting rod is rotatably connected to the swing arm, and the other end is rotatably connected to the eccentric shaft. An elastic reset member is provided between the housing and the swing arm. The elastic bending direction of the elastic reset member is consistent with the swing direction of the swing arm. This solves the problem that existing shaver head transmission mechanisms suffer from easy wear of components during transmission between the shaver head and the shaver head, resulting in a poor product lifespan.

Description

Technical Field

[0001] This utility model relates to the field of shaver technology, and in particular to a blade drive mechanism and a shaver. Background Technology

[0002] Traditional shavers (such as electric clippers and razors) generally rely on friction between the eccentric shaft of an eccentric wheel and the plastic transmission interface of the shaver head to convert rotary motion into linear motion. This design has systemic defects: due to low manufacturing precision and poor wear resistance, the plastic parts wear out and deform rapidly or even break under continuous friction, leading to mechanism failure and significantly shortening product life. In addition, the friction process generates useless energy loss and heat, which accelerates the aging of parts. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a blade head transmission mechanism and a shaver, which solves the problem that the existing blade head transmission mechanism and the blade head are prone to wear of parts, resulting in poor product service life.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a cutter head transmission mechanism, including a rotary driver, a transmission mechanism, and a swing arm for setting the cutter head, wherein at least one swing arm is provided, and the rotary driver includes a housing and an output shaft;

[0005] The number of transmission mechanisms corresponds to the number of swing arms. The transmission mechanism includes an eccentric wheel and a connecting rod. The eccentric wheel includes a wheel body and an eccentric shaft at one end of the wheel body. The wheel body is connected to the output shaft. One end of the connecting rod is rotatably connected to the swing arm, and the other end is rotatably connected to the eccentric shaft. An elastic reset member is provided between the housing and the swing arm. The elastic bending direction of the elastic reset member is consistent with the swing direction of the swing arm.

[0006] Furthermore, the swing arm includes a first swing arm and a second swing arm, the eccentric wheel includes an upper eccentric wheel and a lower eccentric wheel, the connecting rod includes an upper connecting rod and a lower connecting rod, the wheel body of the lower eccentric wheel is connected to the output shaft, the eccentric shaft of the lower eccentric wheel rotates through one end of the lower connecting rod and is connected to the wheel body of the upper eccentric wheel, the other end of the lower connecting rod is rotatably connected to the first swing arm, the eccentric shaft of the upper eccentric wheel is rotatably connected to one end of the upper connecting rod, and the other end of the upper connecting rod is rotatably connected to the second swing arm.

[0007] By adopting the above technical solution, through the precise coupling of double swing arms (first / second swing arms), double eccentric wheels (upper / lower eccentric wheels), and double connecting rods (upper / lower connecting rods), efficient spatial layout and motion optimization are achieved. The lower eccentric wheel is directly connected to the output shaft for drive, and its eccentric shaft passes through the lower connecting rod and links with the upper eccentric wheel, forming a compact series transmission chain. It drives dual outputs with a single input. The lower connecting rod pushes the first swing arm, and the upper connecting rod pushes the second swing arm, so that the two blades are independently controlled. In particular, the design of the lower eccentric shaft passing through the lower connecting rod and connecting to the upper eccentric wheel eliminates the need for an additional transmission shaft, greatly reducing the number of parts and assembly complexity, and improving system rigidity. The double swing arm structure can drive multiple blades simultaneously, significantly improving cutting efficiency, and is particularly suitable for high-end shavers and shaving devices.

[0008] Furthermore, the upper connecting rod and the second swing arm are rotatably connected by a first rotating shaft, and a second rotating shaft and an adapter plate are provided between the lower connecting rod and the first swing arm. The adapter plate is installed on the first swing arm, and one end of the second rotating shaft is rotatably connected to the adapter plate, while the other end is rotatably connected to one end of the lower connecting rod.

[0009] By adopting the above technical solution, the upper connecting rod and the second swing arm are directly rotatably connected through the first rotating shaft, which is simple and reliable; the lower connecting rod and the first swing arm are connected by a transition plate and the second rotating shaft to form a two-stage transition mechanism. The transition plate disperses stress and can realize the connection and transmission between the first swing arm and the lower connecting rod.

[0010] Furthermore, the first and second swing arms move synchronously in opposite directions.

[0011] By adopting the above technical solution, the first swing arm and the second swing arm move synchronously in opposite directions, so that the two blades always move towards or away from each other during operation, generating a self-balancing effect. The inertial forces of the two swing arms cancel each other out, greatly suppressing the vibration of the whole machine. At the same time, the opposite movement of the two blades can form a highly efficient shearing force (such as the staggered cutting of the fixed blade and the moving blade during haircutting), improving the shearing efficiency and smoothness. This synchronization is naturally achieved by the eccentric wheel and the connecting rod, without the need for an additional synchronization device, thus reducing costs.

[0012] Furthermore, the elastic reset element is located on the side of the housing and is situated on at least one side of the swing arm's swing direction.

[0013] By adopting the above technical solution and designing both sides, the elastic sheet is designed to bend accordingly when the swing arm swings, so as to buffer and elastically reset the swing arm, improve the noise reduction effect of the product, and improve the stability when the swing arm drives the cutter head to swing.

[0014] Furthermore, the elastic reset component is an elastic sheet, the thickness of which is significantly less than its height and width, so as to limit the elastic bending direction of the elastic sheet to the thickness direction. The two ends of the elastic sheet in the height direction are connected to the swing arm and the housing, respectively.

[0015] By adopting the above technical solution, the elastic reset component is set as a thin sheet of elastic material. The thinner sheet in the swing direction of the swing arm makes it easier to bend, which facilitates the reciprocating swing of the swing arm. The width of the elastic material is greater than its thickness, which can effectively eliminate the swaying of the swing arm at the front and rear ends. This limits the movement of the swing arm to the swing direction and prevents unnecessary swaying in the front and back directions, further improving the swing stability of the swing arm. The height is greater than the thickness of the elastic material, making the lever arm between the swing arm and the housing longer, which makes the elastic material easier to bend elastically when it is resisted by the swing arm.

[0016] Furthermore, multiple elastic sheets are provided, and the multiple elastic sheets are stacked together.

[0017] By adopting the above technical solution and stacking multiple elastic plates, it is easy to appropriately enhance the elastic restoring force of the elastic plates in the swing direction of the swing arm. The elastic restoring force of the elastic plates on the swing arm can be conveniently adjusted by increasing or decreasing the number of elastic plates according to the force exerted by the swing arm during reciprocating swing.

[0018] Furthermore, the elastic plate includes arms and connecting parts. The number of arms corresponds to the number of swing arms. One end of the multiple arms is connected by the connecting part, and the other end is a free end.

[0019] By adopting the above technical solution, the connecting part integrates multiple arms into a single part. The independent deformation design of the free end ensures that each arm does not interfere with the others, avoiding mechanical coupling when multiple swing arms are linked. At the same time, the one-piece molding process reduces the number of parts and assembly steps, reducing the production cost of the parts while reducing the number of parts to facilitate subsequent assembly. The connecting part also serves as a rigid reference surface, improving the overall structural stability. This design is particularly suitable for high-end dual-head models, enabling complex motion constraints under extremely limited space conditions.

[0020] Furthermore, the swing arm and the cutter head are connected by a connecting mechanism, which includes a drive head, a guide rod, an elastic element, and a top block. A guide groove is formed inside the drive head, and the top block is elastically and slidably disposed in the guide groove through the elastic element. One end of the guide rod is connected to the bottom of the guide groove, and the other end passes through the top block.

[0021] By adopting the above technical solution, a modular mechanism of "drive head - guide rod - elastic element - top block" is introduced in the cutter head connection link. The guide rod can guide and limit the movement trajectory of the drive head, eliminate lateral deviation, and reduce cutter head shaking. The top block slides in the guide groove under the pre-pressure of the elastic element, forming a dual mechanism of rigid guidance and elastic buffering, which effectively eliminates the cutter head assembly gap, suppresses working impact and noise. This mechanism supports quick disassembly and assembly of the cutter head, and greatly improves the convenience of maintenance.

[0022] A razor includes the aforementioned blade drive mechanism.

[0023] Compared with the prior art, the advantages of this utility model are:

[0024] In this invention, a three-in-one drive architecture is constructed, consisting of a rotary driver, an eccentric wheel, a connecting rod transmission, and an elastic reset component. The rigid transmission mechanism formed by the eccentric wheel and connecting rod completely replaces the traditional friction transmission, eliminating the wear source of plastic parts. The transmission process has zero friction loss, significantly improving energy utilization and eliminating the problem of component overheating and aging, effectively extending the product's lifespan. At the same time, the power transmission between the rotary driver and the cutter head is realized through the connecting rod and the eccentric wheel, making the transmission smoother and quieter.

[0025] In this invention, an elastic reset component is uniquely provided between the housing and the swing arm. Its elastic bending direction is strictly consistent with the swing direction of the swing arm, so as to forcibly restrict the swing arm to swing only along a predetermined trajectory, thereby ensuring the absolute straightness and stability of the cutter head's movement trajectory and eliminating vibration and noise problems. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the cutter head drive structure of this utility model.

[0027] Figure 2 This is an exploded view of the cutter head drive structure of this utility model.

[0028] Figure 3 This utility model Figure 1 The main view.

[0029] Figure 4 This is a schematic diagram showing the connection between the rotary actuator and the eccentric block of this utility model.

[0030] Figure 5 This is a schematic diagram of the structure of the elastic reset component of this utility model.

[0031] In the picture:

[0032] 1. Rotary drive, 11. Housing, 12. Rotor, 13. Output shaft, 13A. Output shaft.

[0033] 2. Transmission mechanism, 21. Lower eccentric wheel, 211. Lower wheel body, 212. Lower eccentric shaft, 212A. Lower axis, 22. Lower connecting rod, 23. Upper eccentric wheel, 231. Upper wheel body, 232. Upper eccentric shaft, 232A. Upper axis, 24. Upper connecting rod, 25. First rotating shaft, 26. Second rotating shaft, 27. Adapter plate.

[0034] 3 swing arm, 31 first swing arm, 32 second swing arm, 321 bent edge.

[0035] 4. Connecting mechanism, 41. Drive head, 411. Connecting hole, 412. Snap connector, 42. Guide rod, 43. Elastic element, 44. Top block.

[0036] 5. Elastic reset component, 51. Connecting part, 52. Arm part. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0038] Reference Figure 1 and 2 A blade head transmission mechanism, commonly used in shavers, includes a rotary driver 1, a transmission mechanism 2, and a swing arm 3 for setting the blade head. The rotary driver 1 includes a housing 11 and an output shaft 13. The transmission mechanism 2 is used to convert the rotational motion of the output shaft 13 into the reciprocating swing of the swing arm 3, which is connected to the shaver blade head. Through the reciprocating motion of the swing arm 3, the reciprocating swing of the blade head is realized, thereby achieving the hair trimming function.

[0039] In this embodiment, at least one swing arm 3 is provided, namely a single-blade reciprocating shaver. The number of transmission mechanisms 2 corresponds to the number of swing arms 3. The transmission mechanism 2 includes an eccentric wheel and a connecting rod. The eccentric wheel includes a wheel body and an eccentric shaft at one end of the wheel body. The other end of the wheel body is connected to the output shaft 13. One end of the connecting rod is rotatably connected to the swing arm 3, and the other end is rotatably connected to the eccentric shaft. In this way, the output shaft 13 drives the wheel body to rotate, which in turn drives the connecting rod to move, so that the swing arm 3 is driven to swing back and forth through the connecting rod. An elastic reset member 5 is provided between the housing 11 and the swing arm 3. The elastic bending direction of the elastic reset member 5 is consistent with the swing direction of the swing arm 3. With the high flexibility in the bending direction and the high rigidity in the vertical direction of the elastic reset member 5, the swing arm 3 is forcibly restricted to swing only along a predetermined trajectory, thereby ensuring the absolute linearity and stability of the blade movement trajectory and eliminating the problems of vibration and noise.

[0040] In this embodiment, a three-in-one drive architecture is constructed, consisting of a rotary driver 1, an eccentric wheel, a connecting rod drive, and an elastic reset component 5. The rigid transmission mechanism 2, composed of the eccentric wheel and the connecting rod, completely replaces the traditional friction transmission, eliminating the wear source of plastic parts. The transmission process has zero friction loss, significantly improving energy utilization and eliminating the problem of component overheating and aging, thus extending the service life by several times.

[0041] In this embodiment, refer to Figure 1 , 2 Taking two swing arms 3 as an example, the connection composition of each component will be explained. (For ease of description, ...) Figure 1In the x, y, and z coordinate systems, the length, height, and width of the product are respectively represented. The swing arm 3 includes two swing arms 313 and 323, which are arranged back and forth along the width direction. The corresponding transmission mechanism 2 has an eccentric wheel including an upper eccentric wheel 23 and a lower eccentric wheel 21. The connecting rod includes an upper connecting rod 24 and a lower connecting rod 22. For ease of description, the wheel body of the upper eccentric wheel 23 is called the upper wheel body 231, and the eccentric shaft on it is called the upper eccentric shaft 232. The wheel body and eccentric shaft of the corresponding lower eccentric wheel 21 are called the lower wheel body 211 and the lower eccentric shaft 212, respectively.

[0042] Reference Figure 5 To clearly describe the connection between the eccentric wheel and the connecting rod, the axis of the output shaft 13 is called the output axis 13A, and the corresponding axes of the upper eccentric shaft 232 and the upper eccentric shaft 232 are called the upper axis 232A and the lower axis 212A, respectively. The output axis 13A, the upper axis 232A and the lower axis 212A are arranged in parallel.

[0043] In this embodiment, refer to Figure 4 The lower wheel body 211 is connected to the output shaft 13. The upper end of the lower eccentric shaft 212 is movably connected through one end of the lower connecting rod 22 and connected to the bottom of the upper wheel body 231. The other end of the lower connecting rod 22 is rotatably connected to the first swing arm 313, and the upper eccentric shaft 232 is rotatably connected to the second swing arm 323.

[0044] In this embodiment, refer to Figure 2 The lower connecting rod 22 and the upper connecting rod 24 have the same structure. Taking the lower connecting rod 22 as an example, it has two shaft holes inside its two ends. The upper end of the lower eccentric shaft 212 is rotatably mounted on one end of the lower connecting rod 22 through a bearing. The other shaft hole of the lower connecting rod 22 is rotatably connected to the lower end of the first rotating shaft 25 through a bearing. Since there is a certain height difference between the lower connecting rod 22 and the first swing arm 313, a transition piece 27 is also provided between the lower connecting rod 22 and the first swing arm 313. One end of the transition piece 27 is connected to the first swing arm 313, and the other end is rotatably connected to the first rotating shaft 25. Thus, when the output shaft 13 rotates, it can drive the lower eccentric shaft 212 to rotate around the output axis 13A as the axis, thereby sequentially linking the lower connecting rod 22, the first rotating shaft 25 and the transition piece 27 to drive the first swing arm 313 to reciprocate, realizing the function of the cutter head set on the first swing arm 313 reciprocating.

[0045] As can be seen from the above embodiments, the two ends of the upper connecting rod 24 are also provided with shaft holes and bearings. The shaft holes at both ends of the upper connecting rod 24 are rotatably connected to the upper end of the upper eccentric shaft 232 and the lower end of the second rotating shaft 26, respectively. Its operating principle is the same as the above content, and will not be repeated here.

[0046] Based on the above embodiments, a connecting piece 27 is provided between the first rotating shaft 25 and the first swing arm 313 to compensate for the height difference between the two. Of course, it can be imagined that as long as the height of the first rotating shaft 25 is set to be longer, the linkage relationship between the first rotating shaft 25 and the first swing arm 313 can also be realized, so the connecting piece 27 can also be omitted.

[0047] Reference Figure 1 and 2 The elastic reset member 5 is designed to reduce the vibration of the swing arm 3 during reciprocating motion and to assist the swing arm 3 in resetting after displacement. It can be set on the same side of the housing 11 and the swing arm 3, or on both sides of the housing 11 and the swing arm 3. In this embodiment, the elastic reset member 5 is set on both sides of the housing 11 and the swing arm 3 in the length direction as an example.

[0048] As one embodiment of the elastic reset member 5, it includes an elastic sheet. The elastic sheet is a thin sheet structure, and its thickness is much smaller than its height and width. The swing arm 3 and the housing 11 are respectively disposed at both ends of the elastic sheet in the height direction. It is preferably made of metal to utilize the good elastic force of the metal material. The elastic sheet restricts the movement direction of the swing arm 3 to only move in the direction of the thinner elastic sheet, thereby ensuring that the movement trajectory of the cutter head driven by the system is a stable linear movement and avoiding the uncontrolled shaking of the cutter head on the swing arm 3.

[0049] As a specific structure of the elastic sheet, it includes arm portions 52 corresponding to the number of swing arms 3 and connecting portions 51 connecting the lower ends of multiple arm portions 52. The upper ends of the arm portions 52 are free ends, respectively installed at the ends of the first swing arm 313 and the second swing arm 323, while the connecting portions 51 are respectively installed on the housing 11.

[0050] In this embodiment, the arm portion 52 and the connecting portion 51 are preferably integrally molded.

[0051] As another embodiment of the elastic sheet, refer to Figure 5 The elastic sheet can also be a separate sheet structure, as long as it can achieve the buffering, guiding and limiting effect on the swing arm 3. It can also be other structures or shapes, such as possible elastic components such as springs and compression springs. In this preferred embodiment, an elastic sheet is used, which has the advantages of small size and good guiding and limiting effect on the swing arm 3.

[0052] In this embodiment, in order to enhance the elastic restoring force of the elastic sheet, the elastic sheet can also be arranged in multiple layers. In this way, the elastic force of the elastic sheet can be changed by increasing or decreasing the number of layers of the elastic sheet according to the driving force of different rotary drivers 1.

[0053] In this embodiment, the elastic sheet can be installed on the swing arm 3 and the housing 11 using conventional fasteners such as screws.

[0054] In this embodiment, in order to facilitate the connection between the swing arm 3 and the elastic plate, a downwardly extending bent edge 321 can be provided at the end of the swing arm 3, and then the bent edge 321 and the elastic plate can be fastened together with screws to conveniently complete the connection between the swing arm 3 and the elastic plate.

[0055] Reference Figure 2 As a specific connection method between the swing arm 3 and the cutter head, a connecting mechanism 4 can be set between the two. The specific connecting mechanism 4 includes a drive head 41, a guide rod 42, an elastic element 43, and a top block 44. The bottom of the drive head 41 can be installed on the swing arm 3 by screwing or gluing. The upper end of the drive head 41 forms two snap-fit ​​connectors 412, and a guide groove is formed between the two snap-fit ​​connectors 412. The bottom of the guide groove is provided with a connecting hole 411. The top block 44 is correspondingly slidably disposed in the guide groove. The elastic element 43 is elastically loaded on the top block 44 and the guide block groove. Between the bottoms, the lower end of the guide rod 42 is installed in the connecting hole 411, and the other end passes through the top block 44. The shaver head is correspondingly snapped into the snap-fit ​​connector 412. The guide rod 42 can guide and limit the movement trajectory of the drive head 41, which can prevent the lateral deviation of the shaver head and reduce the shaking of the shaver head. The top block 44 is pre-pressed in the guide groove by the elastic element 43 and slides, forming a dual mechanism of rigid guidance and elastic buffering, which effectively eliminates the assembly gap of the shaver head and suppresses working impact and noise. This mechanism supports quick disassembly and assembly of the shaver head and greatly improves the convenience of maintenance.

[0056] In this embodiment, the rotary driver 1 is a motor, which can be a brushed motor, an internal rotor brushless motor, a hollow cup motor, or other power sources for rotational motion, as long as it has a rotatable output shaft 13 that can drive the lower eccentric wheel 21 to rotate. Since motors are existing technology, they will not be described in detail here. They are mainly composed of components such as housing 11, rotor 12, stator, and output shaft 13.

[0057] In this embodiment, the elastic element 43 can be a spring, a compression spring, or other elastic components or mechanisms that can apply an elastic force to the top block 44, which will not be described in detail here.

[0058] Based on the above embodiments, a shaver (without accompanying drawings) is also provided, which includes a shaver housing, a fixed shaver head, and a movable shaver head. The fixed shaver head is located at one end of the housing, and the movable shaver head can reciprocate on the fixed shaver head. The teeth provided on the fixed shaver head and the movable shaver head are used to trim hair. The aforementioned shaver head transmission mechanism is correspondingly located inside the housing, and the aforementioned swing arm 3 is correspondingly connected to the movable shaver head through a connecting mechanism 4 so as to drive the movable shaver head to reciprocate when the swing arm 3 reciprocates.

[0059] Based on the above embodiments, the aforementioned blade transmission mechanism is not limited to razors, but may also be other types of hair clippers, such as electric clippers with linear motion of the moving blade head. As long as the above transmission mechanism is used to realize the reciprocating motion of the moving blade head to achieve hair trimming, the hair clipper product falls within the protection scope of this embodiment.

[0060] Although the preferred embodiments of the present invention have been described in detail above, it should be clearly understood that various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tool head drive mechanism comprising a rotary drive, a transmission mechanism and a swing arm for setting a tool head, characterized in that, At least one swing arm is provided, and the rotary drive includes a housing and an output shaft; The number of transmission mechanisms corresponds to the number of swing arms. The transmission mechanism includes an eccentric wheel and a connecting rod. The eccentric wheel includes a wheel body and an eccentric shaft at one end of the wheel body. The wheel body is connected to the output shaft. One end of the connecting rod is rotatably connected to the swing arm, and the other end is rotatably connected to the eccentric shaft. An elastic reset member is provided between the housing and the swing arm. The elastic bending direction of the elastic reset member is consistent with the swing direction of the swing arm.

2. A tool bit drive mechanism according to claim 1, wherein The swing arm includes a first swing arm and a second swing arm; the eccentric wheel includes an upper eccentric wheel and a lower eccentric wheel; the connecting rod includes an upper connecting rod and a lower connecting rod; the wheel body of the lower eccentric wheel is connected to the output shaft; the eccentric shaft of the lower eccentric wheel rotatably passes through one end of the lower connecting rod and is connected to the wheel body of the upper eccentric wheel; the other end of the lower connecting rod is rotatably connected to the first swing arm; the eccentric shaft of the upper eccentric wheel is rotatably connected to one end of the upper connecting rod; and the other end of the upper connecting rod is rotatably connected to the second swing arm.

3. A tool bit drive mechanism according to claim 2, wherein The upper connecting rod and the second swing arm are rotatably connected by a first rotating shaft. A second rotating shaft and a transition piece are provided between the lower connecting rod and the first swing arm. The transition piece is mounted on the first swing arm. One end of the second rotating shaft is rotatably connected to the transition piece, and the other end is rotatably connected to one end of the lower connecting rod.

4. The cutter head transmission mechanism according to claim 2, characterized in that, The first swing arm and the second swing arm move synchronously in opposite directions.

5. The cutter head transmission mechanism according to claim 1, characterized in that, The elastic reset member is disposed on the side of the housing and is located on at least one side of the swing direction of the swing arm.

6. The cutter head transmission mechanism according to claim 5, characterized in that, The elastic reset component is an elastic sheet, the thickness of which is significantly less than its height and width, so as to limit the elastic bending direction of the elastic sheet to the thickness direction. The two ends of the elastic sheet in the height direction are respectively connected to the swing arm and the housing.

7. A cutter head transmission mechanism according to claim 6, characterized in that, The elastic sheet is provided in multiple layers.

8. A cutter head transmission mechanism according to claim 6, characterized in that, The elastic sheet includes an arm and a connecting part. The number of the arms corresponds to the number of the swing arms. One end of each arm is connected by a connecting part, and the other end is connected to the corresponding swing arm.

9. A cutter head transmission mechanism according to claim 1, characterized in that, The swing arm and the cutter head are connected by a connecting mechanism, which includes a drive head, a guide rod, an elastic element, and a top block. The drive head has a guide groove inside, and the top block is elastically slidably disposed in the guide groove through the elastic element. One end of the guide rod is connected to the bottom of the guide groove, and the other end passes through the top block.

10. A razor, characterized in that, Includes the cutter head transmission mechanism as described in any one of claims 1-9.

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