Transmission device and shaver thereof

Abstract

The invention provides a transmission device and a shaver thereof, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The transmission device comprises a support and is characterized by further comprising a base, a driving assembly, a first transmission module, a second transmission module and a connecting rod, the base is in a block shape and fixedly connected to the support, and the first transmission module and the second transmission module are movably connected to the two sides of the base respectively; the first transmission module is provided with a first transmission rod used for being connected with part of a shaver head of the shaver, the second transmission module is provided with a second transmission rod used for being connected with the other part of the shaver head of the shaver, the middle of the connecting rod is hinged to the base, and the two ends of the connecting rod are movably connected to the first transmission module and the second transmission module respectively. The driving assembly is connected to the base and connected with the first transmission module or the second transmission module. The driving assembly can drive the first transmission module and the second transmission module to synchronously move horizontally, and the moving direction of the first transmission module is opposite to the moving direction of the second transmission module. The transmission device is high in stability, and the shaver is also high in stability.

Description

Technical Field

[0001] The present invention belongs to the technical field of machinery and relates to a transmission device and a shaver thereof. Background Art

[0002] A shaver is a personal care tool for shaving facial hair and is widely used in the daily life of men. With the development of technology, the types and functions of shavers have become increasingly diverse, from traditional manual shavers to modern electric shavers, and each type has its unique characteristics and applicable scenarios.

[0003] Among them, the reciprocating electric shaver shaves the beard through a reciprocating cutter head, and it is suitable for use in scenarios with fine beards.

[0004] In the existing reciprocating electric shaver, the cam is usually driven by a motor to make the transmission block reciprocate horizontally. In order to ensure the stable reciprocating horizontal movement of the transmission block, a transmission member made of plastic material and having toughness is provided at the transmission block, and the cutter head can be stably reciprocated horizontally through the transmission member. However, the plastic transmission member is prone to breakage after long-term use, resulting in easy damage to the transmission part. And the damaged transmission member is difficult to replace, resulting in too high use cost of the shaver. Summary of the Invention

[0005] The first object of the present invention is to provide a transmission device that can maintain its stability during long-term operation and has a compact structure in view of the above problems existing in the prior art.

[0006] The second object of the present invention is to provide a shaver adopting the above transmission device.

[0007] The object of the present invention can be achieved by the following technical solutions: A transmission device includes a bracket, and is characterized in that it further includes a base, a driving component, a first transmission module, a second transmission module and a connecting rod. The base is in a block shape and is fixedly connected to the bracket. The first transmission module and the second transmission module are respectively movably connected to both sides of the base. The first transmission module has a first transmission rod for connecting with a part of the cutter head of the shaver, and the second transmission module has a second transmission rod for connecting with another part of the cutter head of the shaver. The middle of the connecting rod is hinged to the base, and both ends of the connecting rod are respectively movably connected to the first transmission module and the second transmission module. The driving component is connected to the base and the driving component is connected to the first transmission module or the second transmission module. The driving component can drive the first transmission module and the second transmission module to move synchronously horizontally, and the moving direction of the first transmission module is opposite to the moving direction of the second transmission module.

[0008] In the above-mentioned transmission device, the first transmission module includes a first slide plate, a first guide rod, and a first transmission rod. At both ends of the above-mentioned base, there are a first positioning notch and a second positioning notch that are recessed from the upper part of the base to the middle part of the base. The two ends of the above-mentioned first guide rod are respectively embedded in the first positioning notch and the second positioning notch. The above-mentioned first slide plate is connected to the first guide rod, and the above-mentioned first transmission rod is vertically and fixedly connected to the upper part of the first slide plate.

[0009] In the above-mentioned transmission device, the second transmission module includes a second slide plate, a second guide rod, and a second transmission rod. At both ends of the above-mentioned base, there are a third positioning notch and a fourth positioning notch that are recessed from the upper part of the base to the middle part of the base. The two ends of the above-mentioned second guide rod are respectively embedded in the third positioning notch and the fourth positioning notch. The above-mentioned second slide plate is connected to the second guide rod, and the above-mentioned second transmission rod is vertically and fixedly connected to the upper part of the second slide plate.

[0010] In the above-mentioned transmission device, the first guide rod and the second guide rod are arranged in parallel.

[0011] In the above-mentioned transmission device, there are a number of first transmission rods on the first slide plate, and a number of second transmission rods on the second slide plate. The connecting direction of the number of first transmission rods is perpendicular to the first guide rod, and the connecting direction of the number of second transmission rods is perpendicular to the second guide rod.

[0012] In the above-mentioned transmission device, in the initial state, a number of first transmission rods and a number of second transmission rods are both arranged in a straight line.

[0013] In the above-mentioned transmission device, it further includes a third guide rod. The first slide plate has a connecting section one protruding from its side part, and the second slide plate has a connecting section two protruding from its side part. Both the connecting section one and the connecting section two are connected to the third guide rod and are arranged front and back on the third guide rod.

[0014] In the above-mentioned transmission device, the lower part of the first slide plate has a first bearing seat recessed from its bottom to the middle part. There is a linear bearing between the first slide plate and the first guide rod, and the linear bearing is located at the first bearing seat.

[0015] In the above-mentioned transmission device, the lower part of the second slide plate has a second bearing seat recessed from its bottom to the middle part. There is a linear bearing between the second slide plate and the second guide rod, and the linear bearing is located at the second bearing seat.

[0016] In the above-mentioned transmission device, the lower part of the connecting section one has a third bearing seat recessed from its bottom to the middle part. There is a linear bearing between the connecting section one and the third guide rod, and the linear bearing is located at the third bearing seat.

[0017] In the above-mentioned transmission device, the lower part of the connecting section two has a fourth bearing seat recessed from its bottom to the middle part. There is a linear bearing between the connecting section two and the third guide rod, and the linear bearing is located at the fourth bearing seat.

[0018] The second object of the present invention is achieved by the following technical solutions: A razor, the razor includes a housing, a battery and a cutter head, characterized in that it further includes a transmission device, the battery and the transmission device are both fixedly connected in the housing, the cutter head is connected to the housing port and the cutter head is connected to the transmission device.

[0019] Compared with the prior art, in the present transmission device, a plurality of first transmission rods at the first transmission module are respectively connected to the cutter heads one by one, and a plurality of second transmission rods at the second transmission module are respectively connected to the other cutter heads one by one. The first transmission module and the second transmission module are independently arranged. When the driving member drives the first transmission module or the second transmission module to reciprocate horizontally, under the transmission action of the connecting rod, the first transmission module and the second transmission module translate in opposite directions synchronously.

[0020] It can be seen that during the translation of one transmission module, the other transmission module follows. The power is transmitted between the two transmission modules through the connecting rod. The connecting rod transmission has high transmission stability, and the connecting rod can still ensure its own strength during long-term high-frequency operation. Finally, it is ensured that the transmission mechanism can drive a plurality of first transmission rods and second transmission rods to translate in opposite directions synchronously. Since the whole transmission device is not easy to be damaged, its stability is relatively high.

[0021] At the same time, under the action of the linear bearing, it can not only ensure that the corresponding transmission module can reciprocate horizontally smoothly, but also reduce noise. Description of the Drawings

[0022] Figure 1 is a perspective structural schematic diagram of the present transmission device in the top view direction.

[0023] Figure 2 is a top view structural schematic diagram of the present transmission device.

[0024] Figure 3 is a perspective structural schematic diagram of the present transmission device in the bottom view direction.

[0025] Figure 4 is a sectional structural schematic diagram of the connecting rod in the present transmission device.

[0026] Figure 5 is a sectional structural schematic diagram of the first guide rod in the present transmission device.

[0027] Figure 6 is a sectional structural schematic diagram of the third guide rod in the present transmission device.

[0028] Figure 7 is a sectional structural schematic diagram of the second guide rod in the present transmission device.

[0029] Figure 8 is a perspective structural schematic diagram of the razor.

[0030] Figure 9 is a schematic cross-sectional structure diagram of a shaver.

[0031] Figure 10 is a schematic structure diagram of the connection between the transmission device and the eccentric shaft in the shaver.

[0032] Figure 11 is a three-dimensional structure diagram of the base.

[0033] Figure 12 is a three-dimensional structure diagram of the shaver after the cutter head is disassembled.

[0034] Figure 13 is a three-dimensional structure diagram of the shaver after the cutter head and the upper bracket are disassembled.

[0035] Figure 14 is a three-dimensional structure diagram of the connection between the transmission device and the lower bracket.

[0036] Figure 15 is Figure 12 schematic cross-sectional structure diagram of.

[0037] In the figure, 1. bracket; 2. base; 2a. positioning notch one; 2b. positioning notch two; 2c. positioning notch three; 2d. positioning notch four; 2e. positioning notch five; 2f. positioning notch six; 3. connecting rod; 3a. plug; 4. slide plate one; 4a. connecting section one; 4b. connecting hole one; 5. guide rod one; 6. transmission rod one; 7. slide plate two; 7a. connecting section two; 7b. connecting hole two; 8. guide rod two; 9. transmission rod two; 10. guide rod three; 11. bearing seat one; 12. bearing seat two; 13. bearing seat three; 14. bearing seat four; 15. housing; 16. battery; 17. cutter head; 18. linear bearing; 19. motor; 20. eccentric shaft; 21. lower bracket; 21a. positioning cavity; 22. upper bracket; 22a. avoidance hole; 22b. retaining edge; 23. fixing plate; 24. film; 25. magnet one; 26. magnet two. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly mounted on the other component or there may also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intermediate component at the same time.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0041] Embodiment 1

[0042] As Figure 1 and Figure 2 and Figure 3 and Figure 4 and Figure 5 and Figure 6 and Figure 7 As shown, the transmission device includes a bracket 1, and further includes a base 2, a drive assembly, a first transmission module, a second transmission module, and a connecting rod 3. The base is in two blocks and the base 2 is fixedly connected to the bracket 1. The first transmission module and the second transmission module are respectively movably connected to both sides of the base 2. The first transmission module has a transmission rod 6 for connecting to a part of the cutter head of the shaver. The second transmission module has a transmission rod 9 for connecting to another part of the cutter head of the shaver. The middle of the connecting rod 3 is hinged to the base 2, and both ends of the connecting rod 3 are respectively movably connected to the first transmission module and the second transmission module. The drive assembly is connected to the base 2 and the drive assembly is connected to the first transmission module or the second transmission module. The drive assembly can drive the first transmission module and the second transmission module to translate synchronously, and the moving direction of the first transmission module is opposite to the moving direction of the second transmission module.

[0043] The first transmission module includes a first sliding plate 4, a first guiding rod 5, and a transmission rod 6. At both ends of the base 2, there are a first positioning notch 2a and a second positioning notch 2b that are recessed from the upper part of the base 2 to the middle of the base 2. Both ends of the first guiding rod 5 are respectively embedded in the first positioning notch 2a and the second positioning notch 2b. The first sliding plate 4 is connected to the first guiding rod 5. The transmission rod 6 is vertically and fixedly connected to the upper part of the first sliding plate 4.

[0044] The second transmission module includes a second slide plate 7, a second guide rod 8, and a second transmission rod 9. At both ends of the base 2, there are a third positioning notch 2c and a fourth positioning notch 2d that are recessed from the upper part of the base 2 to the middle of the base 2. Both ends of the second guide rod 8 are respectively embedded in the third positioning notch 2c and the fourth positioning notch 2d. The second slide plate 7 is connected to the second guide rod 8, and the second transmission rod 9 is vertically and fixedly connected to the upper part of the second slide plate 7.

[0045] The first guide rod 5 is arranged in parallel with the second guide rod 8.

[0046] The first positioning notch 2a and the second positioning notch 2b can stably position and connect the first guide rod 5 to the base 2. The third positioning notch 2c and the fourth positioning notch 2d can stably position and connect the second guide rod 8 to the base 2.

[0047] The openings of the first positioning notch 2a, the second positioning notch 2b, the third positioning notch 2c, and the fourth positioning notch 2d are all located at the upper part of the base 2. Therefore, such a structure can facilitate the installation of the first guide rod 5 and the second guide rod 8 on the base 2.

[0048] The first slide plate 4 can smoothly translate along the first guide rod 5, and the second slide plate 7 can smoothly translate along the second guide rod 8.

[0049] In this embodiment, the driving component is a motor and an eccentric shaft fixedly connected to the motor. The bottom of the first slide plate 4 has a strip-shaped connecting groove, which is perpendicular to the guide rod. The eccentric shaft is embedded in the connecting groove. During the continuous rotation of the motor driving the eccentric shaft, the first slide plate 4 is pushed by the eccentric shaft, and finally the first slide plate 4 moves smoothly back and forth along the first guide rod 5.

[0050] Since the two ends of the connecting rod 3 hinged to the base 2 are respectively movably connected to the first slide plate 4 and the second slide plate 7, when the first slide plate 4 moves to the left, the second slide plate 7 moves to the right. Finally, the first transmission rod 6 and the second transmission rod 9 move in opposite directions synchronously.

[0051] Since the first transmission rod 6 and the second transmission rod 9 are respectively used to connect the corresponding razor blades, the alternately translated blades can improve the shaving effect.

[0052] Of course, the first guide rod 5 is arranged in parallel with the second guide rod 8, which further improves the stability of the reciprocating translation of the first transmission rod 6 and the second transmission rod 9.

[0053] In this embodiment, the end of the connecting rod 3 has a downward protruding plug 3a. The first slide plate 4 has a long strip-shaped connecting hole 4b, and the second slide plate 7 has a long strip-shaped connecting hole 7b. The plugs at the ends of the connecting rod 3 are respectively embedded in the connecting hole 4b and the connecting hole 7b. The connecting hole 4b and the connecting hole 7b are arranged in parallel and both are perpendicular to the first guide rod 5. Such a structure can prevent the connecting rod 3 from jamming during the swinging process, as shown in Figure 11 shown.

[0054] The first skateboard 4 is provided with a plurality of first drive rods 6, and the second skateboard 7 is provided with a plurality of second drive rods 9. The connecting direction of the plurality of first drive rods 6 is perpendicular to the first guide rod 5, and the connecting direction of the plurality of second drive rods 9 is perpendicular to the second guide rod 8.

[0055] The number of the first drive rods 6 and the second drive rods 9 is several. If each drive rod has its corresponding driving part, the structure will be too complex and the cost will be too high.

[0056] However, in this solution, the plurality of drive rods are respectively connected to two independent modules, which can ensure the staggered movement of the drive rods as much as possible while simplifying the structure and ensuring stability.

[0057] In the initial state, the plurality of first drive rods 6 and the plurality of second drive rods 9 are both arranged in a straight line.

[0058] It further includes a third guide rod 10. The first skateboard 4 has a connecting section 4a protruding from its side, and the second skateboard 7 has a connecting section 7a protruding from its side. The connecting section 4a and the connecting section 7a are both connected to the third guide rod 10 and are arranged front and back on the third guide rod 10.

[0059] The third guide rod 10 has two functions: First, it ensures that the first skateboard 4 and the second skateboard 7 move more smoothly.

[0060] Second, it can prevent the first skateboard 4 and the second skateboard 7 from flipping.

[0061] The lower part of the first skateboard 4 has a bearing seat 11 recessed from its bottom to the middle. There is a linear bearing 18 between the first skateboard 4 and the first guide rod 5, and the linear bearing 18 is located at the bearing seat 11.

[0062] During the assembly operation, only the coaxiality of the first positioning notch 2a and the second positioning notch 2b needs to be ensured. The linear bearing 18 is directly inserted into the bearing seat 11, and the first guide rod 5 only needs to be able to pass through the linear bearing 18. This effectively reduces the machining and assembly precision of the device, but can ensure the assembly quality.

[0063] The lower part of the second skateboard 7 has a bearing seat 12 recessed from its bottom to the middle. There is a linear bearing 18 between the second skateboard 7 and the second guide rod 8, and the linear bearing 18 is located at the bearing seat 12.

[0064] During the assembly operation, only the coaxiality of the positioning notch three 2c and the positioning notch four 2d needs to be ensured. The linear bearing 18 is directly inserted into the bearing seat two 12. As long as the guide rod two 8 can be inserted through the linear bearing 18, this effectively reduces the machining and assembly accuracy of the device, but can ensure the assembly quality.

[0065] The lower part of the connecting section one 4a has a bearing seat three 13 recessed from its bottom to the middle. There is a linear bearing 18 between the connecting section one 4a and the guide rod three 10, and the linear bearing 18 is located at the bearing seat three 13.

[0066] The lower part of the connecting section two 7a has a bearing seat four 14 recessed from its bottom to the middle. There is a linear bearing 18 between the connecting section two 7a and the guide rod three 10, and the linear bearing 18 is located at the bearing seat four 14.

[0067] At both ends of the base 2, there are opposite positioning notches five 2e and positioning notches six 2f. Both ends of the guide rod three 10 are respectively embedded in the positioning notches five 2e and positioning notches six 2f.

[0068] During the assembly operation, only the coaxiality of the positioning notch five 2e and the positioning notch six 2f needs to be ensured. The linear bearing 18 is directly inserted into the bearing seat three 13 and the bearing seat four 14. As long as the guide rod three 10 can be inserted through the above two linear bearings 18, this effectively reduces the machining and assembly accuracy of the device, but can ensure the assembly quality.

[0069] Of course, the openings of the positioning notch one 2a, the positioning notch two 2b, the positioning notch three 2c, the positioning notch four 2d, the positioning notch five 2e, and the positioning notch six 2f are all located at the upper part of the base 2.

[0070] Embodiment Two

[0071] As Figure 8 and Figure 9 and Figure 10 and Figure 11 As shown, this razor includes a housing, a battery, and a cutter head, and also includes a transmission device. The above battery and transmission device are both fixedly connected inside the housing, and the above cutter head is connected to the housing port and the cutter head is connected to the transmission device.

[0072] In this transmission device, several transmission rods one at the transmission module one are connected to the cutter heads one by one, and several transmission rods two at the transmission module two are connected to the other cutter heads one by one. The transmission module one and the transmission module two are independently arranged. When the driving part drives the transmission module one or the transmission module two to reciprocate and translate, under the transmission action of the connecting rod, the above transmission module one and the transmission module two translate in the opposite direction synchronously.

[0073] It can be seen that during the translation process of one transmission module, the other transmission module follows. Power is transmitted between the two transmission modules through a connecting rod. The connecting rod drive has high transmission stability, and the connecting rod can still maintain its own strength during long-term high-frequency operation, ultimately ensuring that the transmission mechanism can drive a number of transmission rods one and two to translate synchronously and in opposite directions. Since the entire transmission device is not easily damaged, its stability is relatively high.

[0074] Meanwhile, under the action of the linear bearing, it can not only ensure that the corresponding transmission module can reciprocate smoothly, but also reduce noise.

[0075] Such as Figure 12 and Figure 13 and Figure 14 and Figure 15 As shown in the figure, the shell also has a lower bracket 21, an upper bracket 22, a fixing plate 23 and a flexible film 24. The above-mentioned upper bracket 22 and lower bracket 21 are both fixedly connected to the upper port of the shell 15. The above-mentioned transmission device is positioned and connected between the upper bracket 22 and the lower bracket 21. The upper bracket 22 has a through avoidance hole 22a. The transmission rod one 6 and the transmission rod two 9 on the transmission device extend out from the avoidance hole 22a. The blades in the cutter head 17 are correspondingly connected to the corresponding transmission rod one 6 and transmission rod two 9 one by one.

[0076] There is a recessed positioning cavity 21a on the lower bracket 21. There is a magnet one 25 in the positioning cavity 21a. The magnet one 25 is positioned between the upper bracket 22 and the lower bracket 21. There is a magnet two 26 on the cutter head 17. The magnet two 26 is opposite to the magnet one 25. Therefore, the cutter head 17 can be quickly and detachably connected to the shell 15 by the magnetic attraction of the magnet one 25 and the magnet two 26.

[0077] Since both the upper bracket 22 and the lower bracket 21 are made of plastic materials with limited strength, after the fixing plate 23, the upper bracket 22 and the lower bracket 21 are connected together by fasteners, because the fixing plate 23 is a metal part with relatively high strength, ultimately, the overall strength is effectively improved.

[0078] The fixing plate 23 has a through hole opposite to the avoidance hole 22a. The transmission rod one 6 and the transmission rod two 9 of the transmission device extend out from the avoidance hole and the through hole to the upper part of the fixing plate 23. When the cutter head 17 is connected to the upper part of the shell 15, the transmission rod one 6, the transmission rod two 9 and the blades in the cutter head 17 are correspondingly connected one by one. Obviously, the transmission rod one 6 and the transmission rod two 9 are also detachably connected to the corresponding blades. Since the technical solution to be solved in this patent application is how the power of the motor can stably drive the transmission rod one 6 and the transmission rod two 9 to act, therefore, the technical feature of the detachable connection between the transmission rod one 6 and the transmission rod two 9 and the blades is not the technical problem to be solved in this patent, so this part of the technical feature is not described in detail in the embodiment.

[0079] The middle parts of the above-mentioned first transmission rod 6 and second transmission rod 9 are both passed through the film 24. The edge of the film 24 is fixedly connected between the fixed plate 23 and the upper bracket 22. The film 24 is flexible. The function of the film 24 is to ensure the stable movement of the first transmission rod 6 and the second transmission rod 9 while preventing foreign objects from entering the transmission device.

[0080] In this embodiment, the edge of the upper bracket 22 has an upwardly protruding retaining edge 22b. A temporarily storing cavity with an upper opening is formed between the retaining edge 22b and the upper part of the upper bracket 22. The beard hair impurities generated during shaving can be stored through the temporarily storing cavity.

[0081] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0082] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as it is within the spirit of the present invention, appropriate changes and variations made to the above embodiments fall within the scope of protection required by the present invention.

Claims

1. A transmission device, comprising a bracket, characterized in that: It also includes a base, a driving assembly, a transmission module 1, a transmission module 2 and a connecting rod. The base is block-shaped and fixedly connected to the bracket. The transmission module 1 and the transmission module 2 are respectively movably connected at both sides of the base. The transmission module 1 has a transmission rod 1 for connecting to a part of the blade heads of the shaver, and the transmission module 2 has a transmission rod 2 for connecting to another part of the blade heads of the shaver. The middle part of the connecting rod is hinged on the base, and the two ends of the connecting rod are respectively movably connected to the transmission module 1 and the transmission module 2. The driving assembly is connected to the base and the driving assembly is connected to the transmission module 1 or the transmission module 2. The driving assembly can drive the transmission module 1 and the transmission module 2 to translate synchronously, and the moving direction of the transmission module 1 is opposite to the moving direction of the transmission module 2.

2. The transmission device according to claim 1, characterized in that: The transmission module 1 includes a slide plate 1, a guide rod 1 and a transmission rod 1. The two ends of the base are provided with a positioning recess 1 and a positioning recess 2 which are recessed from the upper part of the base to the middle part of the base. The two ends of the guide rod 1 are respectively embedded in the positioning recess 1 and the positioning recess 2. The slide plate 1 is connected to the guide rod 1, and the transmission rod 1 is vertically fixed to the upper part of the slide plate 1.

3. The transmission device according to claim 2, characterized in that: The transmission module 2 includes a slide plate 2, a guide rod 2 and a transmission rod 2. The base has a positioning recess 3 and a positioning recess 4 at both ends, which are recessed from the upper part of the base to the middle part of the base. The two ends of the guide rod 2 are respectively embedded in the positioning recess 3 and the positioning recess 4. The slide plate 2 is connected to the guide rod 2, and the transmission rod 2 is vertically fixed to the upper part of the slide plate 2.

4. The transmission device according to claim 3, characterized in that: The guide rod 1 is arranged in parallel with the guide rod 2.

5. The transmission device according to claim 4, characterized in that: The slide plate 1 is provided with a plurality of transmission rods 1, and the slide plate 2 is provided with a plurality of transmission rods 2. The connecting direction of the plurality of transmission rods 1 is perpendicular to the guide rod 1, and the connecting direction of the plurality of transmission rods 2 is perpendicular to the guide rod 2.

6. The transmission device according to claim 5, characterized in that: In the initial state, the plurality of transmission rods 1 and the plurality of transmission rods 2 are arranged in a straight line.

7. The transmission device according to claim 6, characterized in that: It also includes a guide rod three, the above-mentioned slide plate one has a connecting section one protruding from its side, the above-mentioned slide plate two has a connecting section two protruding from its side, the above-mentioned connecting section one and connecting section two are both connected to the guide rod three, and the connecting section one and connecting section two are arranged front and back on the guide rod three.

8. The transmission device according to claim 7, characterized in that: The lower part of the slide has a bearing seat 1 which is recessed from the bottom to the middle part. A linear bearing is provided between the slide 1 and the guide rod 1 and the linear bearing is located at one part of the bearing seat.

9. The transmission device according to claim 8, characterized in that: The lower part of the second slide plate has a second bearing seat which is recessed from the bottom to the middle part. A linear bearing is provided between the second slide plate and the second guide rod and the linear bearing is located at the second bearing seat.

10. A shaver, comprising a housing, a battery and a shaver head, characterized in that: It also includes the transmission device as described in any one of claims 1 to 9, the battery and the transmission device are both fixedly connected in the shell, the cutter head is connected to the shell port and the cutter head is connected to the transmission device.

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