An electric shaver main body and an electric shaver
By combining a magnetic drive structure and a transmission magnet, the problem of low speed in ordinary motor drives is solved, achieving a high-efficiency, low-energy-consumption shaving effect, reducing the size of the electric shaver and improving its battery life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU ORANGE INNOVATION TECH CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-07
AI Technical Summary
The conventional electric shaver heads driven by ordinary motors rotate at low speeds, resulting in painful pulling and heat transfer to the skin. They also take up a lot of space, affecting battery life and overall size.
It adopts a magnetic drive structure, which drives the cutter head to rotate at high speed through magnetic transmission. High speed is achieved by the cooperation of axial flux motor and transmission magnet, reducing the space occupied by the motor.
The increased blade speed reduces shaving pain, lowers energy consumption, increases battery capacity, shortens shaving time, and improves shaving efficiency and battery life.
Smart Images
Figure CN224464743U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric shaver technology, and in particular to an electric shaver main unit and an electric shaver. Background Technology
[0002] Electric shavers typically include a shaver head assembly and a main unit. In related technologies, a motor structure is set in the main unit, with the motor shaft extending out of the main unit and connected to the shaver head of the shaver head assembly. During shaving, the motor shaft can drive the shaver head to rotate, thereby achieving shaving.
[0003] In related technologies, electric shavers typically use a conventional motor, such as an electric motor, within the shaver's main unit. When driving the shaving head, the motor usually rotates at a relatively low speed. This low speed can cause the shaving head to pull and pull hairs during shaving, resulting in pain. Furthermore, because the motor's shaft is connected to the shaving head, it generates heat over time, which may be transferred to the skin through the shaving head, leading to overheating during shaving.
[0004] Because the structure of a typical electric motor, such as an electric motor, generally includes the motor body and a shaft extending axially from the motor, the assembled shaver main unit needs to include the axial height of both the motor body and the shaft. With the overall height of the shaver remaining constant, the large volume occupied by the internal motor necessitates a reduction in the volume of the internal components used to house the battery or circuit board. To improve battery life, the volume of the shaver main unit needs to be increased, resulting in an excessively large overall size. Conversely, without increasing the overall shaver size, the available battery space is too small, leading to poor battery life. Utility Model Content
[0005] In order to overcome at least one of the defects described in the prior art, the present invention provides an electric shaver main unit and an electric shaver, which can drive the shaver head to rotate at high speed through magnetic transmission via the magnetic drive end of the magnetic drive structure.
[0006] The technical solution adopted by this utility model to solve its problem is:
[0007] An electric shaver main unit includes,
[0008] A housing, wherein the housing is provided with a mounting cavity;
[0009] A magnetic drive assembly includes a magnetic drive structure and a transmission magnet. The magnetic drive structure is installed in the mounting cavity. The magnetic drive structure is provided with a magnetic drive end and engages with the transmission magnet to drive the transmission magnet to rotate. The transmission magnet is installed on the cutter head structure.
[0010] As an optional implementation, the housing is provided with a mounting base, which covers the mounting cavity; the magnetic drive structure includes an axial flux motor, which includes a PCB board and multiple stator windings, the multiple stator windings being disposed on the PCB board and electrically connected to the PCB board; the PCB board is disposed on the mounting base; the multiple stator windings form the magnetic drive end after being energized.
[0011] As an optional implementation, the transmission magnet includes multiple magnetic block groups, each magnetic block group including two magnetic blocks with opposite magnetic poles.
[0012] As an optional implementation, the mounting base is provided with a mounting slot and a supporting step, the supporting step being disposed on the side wall of the mounting slot; the PCB board is mounted in the mounting slot and abuts against the supporting step; the power line of the PCB board is guided to the mounting cavity through the mounting slot.
[0013] As an optional implementation, the housing is provided with a mounting port, which is located at the top of the mounting cavity and communicates with the mounting cavity; the mounting base is disposed at the mounting port; and a sealing structure is provided between the mounting base and the mounting port.
[0014] As an optional implementation, the mounting base is inserted into the mounting port;
[0015] The outer peripheral wall of the mounting base is provided with a sealing groove; the sealing structure is embedded in the sealing groove and, after the mounting base is inserted into the mounting port, it seals with the inner peripheral wall of the mounting port.
[0016] As an optional implementation, the mounting cavity is provided with a power supply structure and a control motherboard, and both the power supply structure and the magnetic drive structure are electrically connected to the control motherboard.
[0017] An electric shaver includes a shaver head assembly and the electric shaver main unit;
[0018] The cutter head assembly includes a cutter head bracket and a cutter head mechanism. The cutter head bracket is mounted on the mounting base. The cutter head mechanism includes a cutter head and a rotating body. The cutter head is rotatably mounted on the cutter head bracket. The cutter head is provided with a plurality of blades. The rotating body is rotatably mounted on the cutter head bracket. The rotating body is provided with a connecting shaft and a transmission magnet. The connecting shaft is connected to the cutter head, and the transmission magnet is used to magnetically drive the rotating body to rotate.
[0019] As an optional implementation, the electric shaver also includes a cover, which is detachably attached to the housing and covers the blade assembly.
[0020] The side of the housing is provided with a first snap-fit part, and the side of the cover is provided with a second snap-fit part, the second snap-fit part being used to snap-fit with the first snap-fit part.
[0021] As an optional implementation, the first snap-fit portion includes a buckle and an elastic component, one end of the elastic component is connected to the mounting base, and the other end of the elastic component is connected to the buckle; the second snap-fit portion includes a snap-fit interface; the buckle engages with the snap-fit interface.
[0022] In summary, this utility model has the following technical effects:
[0023] The shaver head assembly can be mounted onto the shaver main body housing, and the transmission magnet of the magnetic drive structure can be mounted onto the shaver head of the head assembly. When the electric shaver is started, the magnetic drive structure of the electric shaver main body is energized, and the magnetic drive end can magnetically drive the transmission magnet mounted on the shaver head. In this way, the shaver head structure can be driven to rotate by magnetic transmission. Compared with the ordinary motor driving the shaver head, the magnetic drive can achieve a higher speed under the same current, and the shaver head rotates faster. This results in higher shaving efficiency and eliminates the pulling pain caused by low speed. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of the electric shaver main unit of this utility model;
[0026] Figure 2 This is an exploded structural diagram of the electric shaver main unit of this utility model.
[0027] Figure 3 This is a schematic diagram of the mounting base of this utility model;
[0028] Figure 4 This is a schematic diagram of the axial flux motor of this utility model;
[0029] Figure 5 This is a cross-sectional view of the main unit of the electric shaver of this utility model;
[0030] Figure 6 This is a cross-sectional view of the electric shaver main unit of this utility model from another perspective;
[0031] Figure 7 This is a schematic diagram of the structure of the electric shaver of this utility model.
[0032] The meanings of the reference numerals in the attached drawings are as follows: 10, housing; 11, mounting base; 111, snap-fit; 112, elastic component; 113, mounting slot; 114, supporting step; 115, sealing groove; 12, mounting cavity; 13, mounting port; 14, sealing element; 15, power supply; 16, control board; 17, charging connector; 20, magnetic drive structure; 21, PCB board; 211, power line of PCB board; 22, stator winding; 31, cutter head bracket; 32, rotating body; 321, transmission magnet; 322, connecting shaft; 33, cutter head; 331, blade; 40, top cover; 41, card interface. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0035] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.
[0036] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.
[0037] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.
[0038] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.
[0039] See Figures 1-6 This utility model discloses an electric shaver main unit, including a housing 10 and a magnetic drive assembly. The housing 10 has a mounting cavity 12. The magnetic drive assembly includes a magnetic drive structure 20 and a transmission magnet 321. The magnetic drive structure 20 is mounted in the mounting cavity 12 and has a magnetic drive end that engages with the transmission magnet 321 to drive the transmission magnet 321 to rotate. The transmission magnet 321 is mounted on the shaver head 33 structure.
[0040] Based on the above structure, when using the electric shaver main unit of this utility model, the magnetic drive structure 20 of the magnetic drive component can be assembled into the mounting cavity 12 of the housing 10, and the transmission magnet 321 can be driven and cooperated with the magnetic drive structure 20 of the magnetic drive structure 20. In this way, the magnetic drive structure 20 can be started after being powered on, and the magnetic drive end drives the transmission magnet 321 to rotate.
[0041] Specifically, when applied to an electric shaver, the shaver head 33 assembly can be mounted onto the housing 10 of the shaver main unit, and the transmission magnet 321 of the magnetic drive structure 20 can be mounted onto the shaver head 33 of the shaver head 33 assembly. When the electric shaver is started, the magnetic drive structure 20 of the electric shaver main unit is energized, and can magnetically drive the transmission magnet 321 mounted on the shaver head 33 through the magnetic drive end. In this way, the shaver head 33 structure can be driven to rotate through magnetic transmission. Compared with the ordinary motor driving the shaver head 33 to rotate, the magnetic transmission drive can achieve a higher speed under the same current, and the shaver head 33 rotates faster, resulting in higher shaving efficiency and eliminating the pulling pain caused by low speed.
[0042] The aforementioned magnetic drive structure can be either a PCB board motor (axial flux motor) with the stator windings of the PCB board as the magnetic drive end, or a conventional motor driving the active magnet to rotate, which in turn drives the transmission magnet of the cutter head structure to rotate, both of which achieve magnetic transmission.
[0043] See Table 1 for details:
[0044]
[0045] The inventors' experiments have demonstrated that, under the same electrical power, the rotational speed of the magnetic drive structure 20 is significantly higher than that of the blade head 33 output by a conventional motor. Thus, while pursuing higher rotational speeds, the magnetic drive structure 20 uses less electrical power, resulting in lower energy consumption. Furthermore, with the same energy consumption, the magnetic drive structure 20 can provide a higher rotational speed, leading to a faster shaving rate, shorter shaving time, and more efficient cleaning.
[0046] As an optional implementation, a mounting base 11 is provided on the housing 10, and the mounting base 11 is sealed to the mounting cavity 12. In this way, the power supply 15 line used to control the magnetic drive structure 20 and the control switch can be housed in the mounting cavity 12. By sealing the mounting base 11 to the opening of the mounting cavity 12, a larger storage space can be formed inside the mounting cavity 12 for the power supply 15 line, control switch and other structures.
[0047] Specifically, the magnetic drive structure 20 includes an axial flux motor, which includes a PCB board 21 and multiple stator windings 22. The multiple stator windings 22 are disposed on the PCB board 21 and electrically connected to the PCB board, and the PCB board 21 is disposed on the mounting base 11. The multiple stator windings 22 form a magnetic drive end after being energized.
[0048] Taking six sets of stator windings 22 as an example, the stator windings 22 are selected as copper foil coils in related technologies. After winding, current is introduced through PCB board 21. According to the right-hand screw rule, when the current passes through the stator windings 22, a magnetic field will be generated around the stator windings 22. By changing the direction and magnitude of the current, multiple stator windings 22 can form a temporary magnetic field. The magnetic field formed by the stator winding group can be N pole or S pole, and the magnetic poles formed by two adjacent stator windings are opposite. The specific magnetic poles are determined by the direction of the current.
[0049] Based on this structure, the aforementioned transmission magnet 321 can be selected from three sets of corresponding magnetic block groups. Each set of magnetic block groups includes one N-pole magnetic block and one S-pole magnetic block. The magnetic blocks in the three sets are distributed alternately in a pattern of "N-pole - S-pole - N-pole - S-pole - N-pole - S-pole," with uniform spacing between adjacent magnetic poles. This ensures correspondence with the magnetic field poles generated by the stator windings 22 of the PCB board 21. Thus, during driving, the magnetic poles of the rotating magnetic field formed by the multiple stator windings 22 on the PCB board can cooperate with the alternating magnetic poles of the transmission magnet 321, using the magnetic force of attraction between opposite poles and repulsion between like poles to drive rotation. When a certain region of the magnetic field generated by the stator windings 22 is N-pole, adjacent S-poles on the rotor will be attracted, while adjacent N-poles will be repelled. As the direction of the stator rotating magnetic field continuously changes, the rotor's magnetic poles will rotate synchronously with the direction of the rotating magnetic field under the combined force of the attractive and repulsive forces.
[0050] Of course, the stator winding 22 can be designed as a 2-pole winding (a pair of N / S poles), that is, two positioning windings are set up. After being energized, it generates a pair of magnetic fields with different magnetic poles. The corresponding magnetic block group of the drive magnet 321 can also be selected as two groups. In this way, when the magnetic field of the stator winding 22 rotates once, the drive magnet 321 rotates once synchronously. Alternatively, the stator winding 22 can be designed as a 4-pole winding (two pairs of N / S poles), that is, four positioning windings are set up. After being energized, it generates two pairs of magnetic fields with different magnetic poles that are interleaved. The corresponding magnetic block group of the drive magnet 321 can also be selected as two groups. In this way, when the magnetic field of the stator winding 22 rotates once, the drive magnet 321 rotates half a turn synchronously. The specific settings can be selected according to actual needs.
[0051] It should be noted that, since the PCB motor in the axial flux motor is selected as the magnetic drive structure 20 in this embodiment, the stator winding 22 can be directly printed on the PCB board 21, and then the PCB board 21 is placed on the mounting base 11. In this way, the assembly height of the magnetic drive structure 20 is the thickness of the PCB board 21 and the thickness of the stator winding 22 after printing, which greatly reduces the assembly height of the drive structure. Thus, under the same size housing 10 structure, the space in the mounting cavity 12 of the housing 10 for assembling the magnetic drive structure 20 is reduced, and more space can be reserved inside to assemble the power supply 15 structure and the control board 16 and other structures. This can increase the capacity of the power supply 15 and improve the battery life of the electric shaver.
[0052] Without changing the battery life of the power supply 15, the smaller mounting height of the magnetic drive structure 20 reduces the size of the casing 10 itself, thereby reducing the size of the shaver main unit and making the shaver lighter, thinner and more portable.
[0053] Furthermore, since the conventional motor used in the prior art has a limited output speed of the shaft, the rotation speed of the blade head 33 is limited when it is driven to rotate. However, in this embodiment, the magnetic drive end of the magnetic drive structure 20 drives the blade head 33 connected to the transmission magnet 321 to have a higher rotation speed. The increase in the rotation speed of the blade head 33 can reduce the tendency of the user to pull hairs during shaving, thus improving the shaving experience.
[0054] See Table 2 for details:
[0055]
[0056] The inventors' experiments have proven that, under the same current, the speed output by the PCB motor is significantly higher than the speed output by the blade head 33 of a conventional motor. Thus, while pursuing higher speeds, the magnetic drive structure 20 uses less electrical power, resulting in lower energy consumption. Furthermore, with the same energy consumption, the magnetic drive structure 20 can provide a higher speed, leading to a faster shaving rate, shorter shaving time, and more efficient cleaning.
[0057] As an optional implementation, to facilitate the assembly of the PCB motor and the mounting base 11, a mounting slot 113 and a supporting step 114 can be provided in the mounting base 11. The supporting step 114 is provided on the side wall of the mounting slot 113. The PCB board 21 is installed in the mounting slot 113, and after the PCB board 21 is assembled into the mounting slot 113, it can abut against the supporting step 114. That is, the supporting step 114 supports the PCB board 21 around its perimeter and does not directly contact the middle of the PCB board 21. After the PCB board 21 is assembled into the mounting slot 113, there is enough space above and below for heat dissipation. Even during long-term use, the PCB board 21 can dissipate heat well.
[0058] Furthermore, due to the installation through slot 113, the power line 211 of the PCB board is guided to the mounting cavity 12 through the installation through slot 113, and is stored in the mounting cavity 12 to make electrical connection with the power supply 15 structure and the control board 16 structure in the mounting cavity 12.
[0059] More specifically, the aforementioned limiting step extends circumferentially along the mounting slot 113, meaning that after the PCB board 21 is assembled into the mounting slot 113, it can be supported in the circumferential direction, thus making the assembly structure more stable.
[0060] Of course, after the PCB board 21 is assembled into the mounting slot 113 of the mounting base 11, since the entire end face is exposed on the end face of the mounting base 11, the dander and hair generated after shaving are located on the surface of the PCB board 21. When cleaning, it can be cleaned directly on the outside, which makes cleaning more convenient and cleaner.
[0061] As an optional implementation, a mounting port 13 can be provided in the housing 10. The mounting port 13 is located at the top of the mounting cavity 12 and communicates with the mounting cavity 12. The mounting base 11 is disposed in the mounting port 13, and a sealing structure is provided between the mounting base 11 and the mounting port 13. In this way, after the mounting base 11 is assembled with the PCB motor, it can cover the mounting cavity 12 of the housing 10 and seal at the mounting port 13. The sealing structure can prevent dander, hair, or water from entering through the assembly gap of the magnetic drive structure 20 during the shaving process, thus improving dust and water resistance.
[0062] As an optional implementation, the mounting base 11 is inserted into the mounting port 13, and a sealing groove 115 is provided on the outer peripheral wall of the mounting base 11. The sealing structure is embedded in the sealing groove 115 and seals with the inner peripheral wall of the mounting port 13 after the mounting base 11 is inserted into the mounting port 13.
[0063] Specifically, the aforementioned sealing structure can utilize sealing rings or sleeves from relevant technologies to achieve a seal. During assembly, the sealing ring or sleeve is fitted into the sealing groove 115. Thus, after the mounting base 11 is assembled into the mounting opening 13, the sealing ring or sleeve forms a sealing fit with the inner circumferential wall of the mounting opening 13, achieving a seal in the circumferential direction between the mounting base 11 and the mounting opening 13, resulting in a good sealing effect. Furthermore, the sealing structure is assembled and limited by the sealing groove 115, making the sealing structure more stable.
[0064] Furthermore, a power supply 15 structure and a control motherboard can be installed inside the mounting cavity 12. The power supply 15 structure and the magnetic drive structure 20 are electrically connected to the control motherboard. Specifically, the power supply 15 structure can be a rechargeable battery from the prior art. A charging connector 17 is provided at the bottom of the casing 10 and electrically connected to the rechargeable battery. In this way, the rechargeable battery can be used to power the control motherboard and the magnetic drive structure 20 and to charge them through the charging connector 17, so that the internal power supply 15 structure can be used cyclically.
[0065] Example 2,
[0066] See Figures 1-7 An electric shaver is shown, including a shaver head assembly 33 and the electric shaver main unit of Embodiment 1. Specifically, the shaver head assembly 33 includes a shaver head bracket 31 and a shaver head 33 mechanism, with the shaver head bracket 31 mounted on a mounting base 11; the shaver head 33 mechanism includes a shaver head 33 and a rotating body 32; the shaver head 33 is rotatably mounted on the shaver head bracket 31; the shaver head 33 is provided with a plurality of blades 331; the rotating body 32 is rotatably mounted on the shaver head bracket 31; the rotating body 32 is provided with a connecting shaft 322 and a transmission magnet 321, the connecting shaft 322 is connected to the shaver head 33, and the transmission magnet 321 is used to magnetically drive the rotating body 32 to rotate.
[0067] Based on the above structure, during assembly, the rotating body 32 is rotatably mounted on the blade head bracket 31, using the blade head bracket 31 as the assembly base. The blade head 33 is then connected to the connecting shaft 322 of the rotating body 32. Thus, the rotation of the rotating body 32 drives the blade head 33 to rotate. The blade head bracket 31 can be assembled as a whole onto the shaver main unit, engaging with the magnetic drive end of the magnetic drive structure 20 within the shaver main unit for magnetic transmission. When the magnetic drive structure 20 is activated, it drives the transmission magnet 321, which in turn drives the rotating body 32 to rotate. The rotation of the rotating body 32 then drives the blade 331 of the blade head 33 to rotate, completing the shaving action during this rotation.
[0068] Specifically, when applied to an electric shaver, the shaver head 33 assembly can be mounted onto the housing 10 of the shaver main unit, and the transmission magnet 321 of the magnetic drive structure 20 can be mounted onto the shaver head 33 of the shaver head 33 assembly. When the electric shaver is started, the magnetic drive structure 20 of the electric shaver main unit is energized, and can magnetically drive the transmission magnet 321 mounted on the shaver head 33 through the magnetic drive end. In this way, the shaver head 33 structure can be driven to rotate through magnetic transmission. Compared with the ordinary motor driving the shaver head 33 to rotate, the magnetic transmission drive can achieve a higher speed under the same current, and the shaver head 33 rotates faster, resulting in higher shaving efficiency and eliminating the pulling pain caused by low speed.
[0069] Since the rotating body 32 in this application is driven by the transmission magnet 321 and the magnetic drive structure 20, and the transmission is achieved by the magnetic field between the magnets, the transmission can be completed by non-contact assembly of the rotating body 32 and the magnetic drive structure 20. Therefore, the head bracket 31 is assembled on the outside of the shaver main unit and the magnetic drive structure 20 is assembled inside, reducing the assembly gap caused by the direct connection between the rotating body 32 and the magnetic drive structure 20. Due to the reduction of the assembly gap, the setting of the sealing structure can be reduced, thus improving the waterproof and dustproof performance of the inside of the shaver main unit.
[0070] Furthermore, since the transmission between the rotating body 32 and the magnetic drive structure 20 is achieved by a magnetic structure, there is no direct assembly relationship between the two. Therefore, when cleaning the blade head 33 assembly, the blade head bracket 31 can be directly detached from the shaver main unit, which facilitates the cleaning of the blade head 33 assembly.
[0071] As an alternative implementation, in order to prevent the cutter head 33 structure from being exposed, a cover is usually provided on the outside of the cutter head 33 assembly. When the cutter head 33 assembly is not in use, the cover can be sealed to the outside of the cutter head 33 assembly and detachably connected to the housing 10.
[0072] Specifically, the electric shaver includes a cover that is detachably attached to the housing 10 and covers the shaver head 33 assembly. The housing 10 has a first snap-fit portion on its side, and the cover has a second snap-fit portion on its side, which engages with the first snap-fit portion.
[0073] In existing electric shavers, the cover is typically attached to the shaver housing 10 using a magnetic attachment method. This involves a magnet on the cover and a corresponding magnet on the housing 10, enabling easy assembly and disassembly. However, in this embodiment, the shaver head 33 assembly rotates via magnetic transmission. If the cover and housing 10 are assembled magnetically, the magnetic structure on the cover or housing 10 would affect the magnetic field of the magnetic drive assembly, leading to instability in the drive structure of the shaver head 33 assembly.
[0074] Therefore, in this embodiment, by providing a first snap-fit part on the cover, when the cover is closed to the cutter head 33 assembly of the housing 10, it snaps into the second snap-fit part on the housing 10, without the need for a magnetic structure for snap-fit, making disassembly and assembly convenient. Moreover, the connection structure between the cover and the housing 10 is designed for the magnetic drive structure 20 and will not affect the magnetic field of the magnetic drive structure 20.
[0075] As an optional implementation, the first snap-fit portion includes a snap fastener 111 and an elastic member 112. One end of the elastic member 112 is connected to the mounting base 11, and the other end of the elastic member 112 is connected to the snap fastener 111. The second snap-fit portion includes a snap-fit interface 41. The snap fastener 111 and the snap-fit interface 41 engage in a snap-fit relationship. When the cover is assembled with the housing 10, the snap-fit interface 41 on the cover corresponds to the snap fastener 111 structure on the housing 10. After assembly, the snap fastener 111 can engage with the snap-fit interface 41 under the elastic force of the elastic member 112, and the cover can then be snap-fitted into the housing 10.
[0076] When removing the cover, pressing the buckle 111 compresses the elastic component 112, thus allowing the hook to exit the card interface 41 and separating the cover from the housing 10.
[0077] Of course, it is also possible to set a hook structure on the cover and a corresponding slot on the body, so that the cover can be snapped together after it is assembled to the housing 10.
[0078] In addition, it should be noted that the other structures of the electric shaver main unit in this embodiment are the same as those in Embodiment 1, and the working principle and effect of the shaver head 33 component are the same as those in Embodiment 1, which will not be described in detail here.
[0079] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.
Claims
1. An electric shaver head characterized by comprising: include, A housing, wherein the housing is provided with a mounting cavity; A magnetic drive assembly includes a magnetic drive structure and a transmission magnet. The magnetic drive structure is installed in the mounting cavity. The magnetic drive structure is provided with a magnetic drive end and engages with the transmission magnet to drive the transmission magnet to rotate. The transmission magnet is installed on the cutter head structure.
2. The electric shaver head according to claim 1, characterized in that The housing is provided with a mounting base, which covers the mounting cavity; the magnetic drive structure includes an axial flux motor, which includes a PCB board and multiple stator windings, which are disposed on the PCB board and electrically connected to it; the PCB board is disposed on the mounting base; the multiple stator windings form the magnetic drive end after being energized.
3. The electric shaver head according to claim 2, characterized in that The transmission magnet includes multiple magnetic block groups, and each magnetic block group includes two magnetic blocks with opposite magnetic poles.
4. The electric shaver head according to claim 2, characterized in that The mounting base is provided with a mounting slot and a supporting step, and the supporting step is provided on the side wall of the mounting slot; the PCB board is mounted in the mounting slot and abuts against the supporting step; the power line of the PCB board is guided to the mounting cavity through the mounting slot.
5. The electric shaver head according to claim 2, characterized in that The housing is provided with an installation port, which is located at the top of the mounting cavity and communicates with the mounting cavity; the mounting base is disposed at the installation port; and a sealing structure is provided between the mounting base and the installation port.
6. The electric shaver head according to claim 5, characterized in that The mounting base is inserted into the mounting port; The outer peripheral wall of the mounting base is provided with a sealing groove; the sealing structure is embedded in the sealing groove and, after the mounting base is inserted into the mounting port, it seals with the inner peripheral wall of the mounting port.
7. The electric shaver head according to any of claims 1-6, characterized in that The mounting cavity is equipped with a power supply structure and a control motherboard, and both the power supply structure and the magnetic drive structure are electrically connected to the control motherboard.
8. An electric shaver, characterized in that Includes a blade head assembly and an electric shaver main unit according to any one of claims 1-7; The cutter head assembly includes a cutter head bracket and a cutter head mechanism. The cutter head bracket is mounted on the mounting base. The cutter head mechanism includes a cutter head and a rotating body. The cutter head is rotatably mounted on the cutter head bracket. The cutter head is provided with a plurality of blades. The rotating body is rotatably mounted on the cutter head bracket. The rotating body is provided with a connecting shaft and a transmission magnet. The connecting shaft is connected to the cutter head, and the transmission magnet is used to magnetically drive the rotating body to rotate.
9. The electric shaver according to claim 8, characterized in that The electric shaver also includes a cover, which is detachably connected to the housing and covers the outside of the shaver head assembly; The side of the housing is provided with a first snap-fit part, and the side of the cover is provided with a second snap-fit part, the second snap-fit part being used to snap-fit with the first snap-fit part.
10. The electric shaver according to claim 9, characterized in that The first snap-fit portion includes a buckle and an elastic component, one end of the elastic component is connected to the housing, and the other end of the elastic component is connected to the buckle; the second snap-fit portion includes a snap-fit interface; the buckle engages with the snap-fit interface.