Electric shaver

Abstract

This application discloses an electric shaver, which includes a drive unit, a hair cutting unit, and a handle. The drive unit includes a motor housing, a base disposed within the motor housing, a mover assembly, a stator assembly, an elastic suspension assembly, and an elastic support. The stator assembly is mounted on the base. One end of the elastic suspension assembly is fixedly connected to the base, and the other end is fixedly connected to the mover assembly. The base is suspended from the motor housing via the elastic support. The stator assembly drives the mover assembly to reciprocate in a preset direction, and the mover assembly is connected to the hair cutting unit. The handle includes a support body and a vibration damping device. The motor housing is fixedly connected to the top of the support body. The vibration damping device includes a vibration damping element and a buffer mechanism. The vibration damping element is suspended and fixedly connected to the support body via the buffer mechanism to absorb the angular vibration of the handle caused by the drive unit. This electric shaver can effectively dampen the body, thereby significantly reducing the vibration felt during use.

Description

Technical Field

[0001] This application relates to the field of electric shaver technology, and particularly to an electric shaver. Background Technology

[0002] Electric shavers consist of a drive unit and a hair-cutting unit. The drive unit moves the moving blades of the hair-cutting unit relative to the stationary blades, or two moving blades reciprocating relative to each other, to cut beard and sideburns. A major problem with current electric shavers is the large amplitude of body vibration, resulting in strong vibrations and a poor user experience.

[0003] The above content is only used to help understand the technical solution of the invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] In view of the above problems, the present invention proposes an electric shaver, which aims to solve the technical problem of strong vibration in the body of the electric shaver.

[0005] To achieve the above objectives, the electric shaver proposed in this invention includes a handle, a drive device disposed at the top of the handle, and a hair cutting unit, wherein...

[0006] The driving device includes a motor housing, a base disposed within the motor housing, a mover assembly, a stator assembly, an elastic suspension assembly, and an elastic support member. The stator assembly is fixedly installed on the base. One end of the elastic suspension assembly is fixedly connected to the base, and the other end is fixedly connected to the mover assembly, such that the mover assembly and the stator assembly are spaced apart. The base is suspended from the motor housing via the elastic support member. The stator assembly drives the mover assembly to reciprocate along a preset direction via electromagnetic action. The mover assembly is connected to the hair cutting unit to drive the hair cutting unit to cut hair.

[0007] The handle includes a support body and a vibration damping device. The motor housing is fixedly connected to the top of the support body. The vibration damping device includes a vibration damping element and a buffer mechanism. The vibration damping element is suspended and fixedly connected to the support body through the buffer mechanism to absorb vibrations of the handle along a preset direction.

[0008] In one embodiment, the support body is a long strip extending vertically, and the vibration damping device is located at the end of the support body away from the driving device.

[0009] In one embodiment, the electric shaver further includes a battery embedded in the support body and located between the vibration damping device and the drive device.

[0010] In one embodiment, the support body has a suspension space, and the buffer mechanism includes two buffer members. The vibration damping oscillator is fixedly connected to the support body at both ends in the preset direction through one of the buffer members so as to be suspended in the suspension space.

[0011] In one embodiment, the buffer includes at least one disc-shaped leaf spring structure, the central connecting end of the leaf spring structure being fixedly connected to the end of the damping oscillator in the preset direction, and the external connecting end of the leaf spring structure being fixedly connected to the support body.

[0012] In one embodiment, the vibration damping device further includes a connecting block fixedly connected to the main body of the support; the external connecting ends of the two buffer components are respectively fixedly connected to the two ends of the connecting block, and the connecting block and the vibration damping oscillator are spaced apart.

[0013] In one embodiment, the vibration damping oscillator includes a counterweight and a central shaft. The central shaft is installed on the counterweight through and around its axis, and both ends of the central shaft are fixedly connected to the two central connecting ends, respectively.

[0014] In one embodiment, the central connecting end is provided with a positioning insertion hole, and the central shaft is adapted to be inserted into the positioning insertion hole; the vibration damping device further includes a first connecting member, which passes through the positioning insertion hole and the end of the central shaft to fix the central connecting end and the central shaft.

[0015] In one embodiment, the two ends of the central shaft extend beyond the counterweight. The vibration damping device further includes a first washer and a second washer disposed on both sides of the leaf spring structure. The first washer is sleeved on the outer periphery of the central shaft and sandwiched between the central connecting end and the counterweight. The second washer is sandwiched between the first connecting member and the central connecting end. The bracket body has a clearance hole corresponding to the first connecting member, and the inner wall of the clearance hole is located on the outer periphery of the outer wall of the second washer.

[0016] In one embodiment, the two opposite sidewalls of the connecting block extending along the preset direction are recessed to form a limiting groove; the top wall of the suspension space is provided with two opposite and spaced limiting protrusions; the two limiting protrusions are correspondingly embedded in the two limiting grooves to restrict the movement of the connecting block relative to the support body in the preset direction; the electric shaver also includes a second connecting member, which passes through the limiting protrusions and fixes the support body and the connecting block.

[0017] In one embodiment, the difference between the natural frequency of the vibration damping device and the natural frequency of the driving device is greater than or equal to -5 Hz and less than or equal to 5 Hz; and / or, the mass of the vibration damping oscillator is positively correlated with the mass of the mover assembly.

[0018] In one embodiment, the electric shaver further includes a housing, the housing including a handle and a head connected to the top of the handle, the drive device being fixedly installed in the head, and the handle being installed in the handle; a groove is provided on the support body near the upper part of the counterweight, a sealing ring is embedded in the groove, and the support body abuts against the inner wall of the housing through the sealing ring; the outer wall of the vibration damping element is spaced apart from the inner wall of the housing.

[0019] This invention relates to an electric shaver where a stator assembly is fixedly mounted on a base, one end of an elastic suspension assembly is fixedly connected to the base, and the other end is fixedly connected to the mover assembly, with the mover assembly and stator assembly spaced apart. The base is suspended from the motor housing by an elastic support member. In this way, the mover assembly is connected to the base via the elastic suspension assembly, and the base is connected to the motor housing via the elastic support member. This fully utilizes the weight of the stator assembly on the base for cushioning and shock absorption, resulting in a smaller swing amplitude of the elastic support member relative to the motor housing, and consequently, a smaller vibration amplitude transmitted to the motor housing.

[0020] Meanwhile, the handle includes a support body and a vibration damping device, with the motor housing fixedly connected to the top of the support body. The vibration damping device includes a damping vibrator and a buffer mechanism. The damping vibrator is suspended and fixedly connected to the support body via the buffer mechanism to absorb angular vibrations of the handle caused by the drive device. Thus, by providing a vibration damping device on the support body of the handle, and suspending and fixing the damping vibrator to the support body via the buffer mechanism, the angular vibrations of the handle are absorbed, further reducing the vibrations transmitted to the handle by the drive device. Therefore, the drive device of the electric shaver of this invention achieves primary vibration damping through an elastic support member, while the handle achieves secondary vibration damping through the vibration damping device, effectively reducing the vibration of the entire handle and resulting in a better user experience for the electric shaver. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of an embodiment of the electric shaver of the present invention is shown;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of a medium-sized electric shaver after the housing has been removed;

[0024] Figure 3 for Figure 2 A cross-sectional view of the drive unit from one angle;

[0025] Figure 4 for Figure 2 A schematic diagram of the assembled handle and battery;

[0026] Figure 5 for Figure 4 A cross-sectional view of the structure from one angle;

[0027] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0028] Figure 7 for Figure 4 A cross-sectional view of the structure from another angle;

[0029] Figure 8 for Figure 7 A magnified view of a section at point B in the middle;

[0030] Figure 9 This is a schematic diagram of the structure of an embodiment of the vibration reduction device of the present invention;

[0031] Figure 10 for Figure 7 A schematic diagram of the vibration damping device from another angle;

[0032] Figure 11 for Figure 8 Exploded view of the vibration damping device;

[0033] Figure 12 This is a schematic diagram of the structure of one embodiment of the support body of the present invention.

[0034] Explanation of icon numbers:

[0035] label name label name label name 100 handle 127 Central connection end 222 stator assembly 110 Support body 128 Positioning socket 223 Elastic suspension components 111 Suspended space 129 External connection end 224 base 112 Limiting protrusion 130 fastener 230 elastic support 113 clearance hole 131 Connecting block 300 Hair cutting unit 114 groove 132 Limiting groove 400 Battery 120 Vibration damping device 133 First connector 500 Second connector 121 Vibration damping oscillator 134 First gasket 600 case 122 counterweight 135 Second gasket 610 handle 123 Central axis 200 drive unit 620 head 124 Buffer mechanism 210 motor housing 700 sealing ring 125 buffer 220 motor unit 126 Leaf spring structure 221 Moving component

[0036] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0038] Furthermore, if the embodiments of the present invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B.

[0039] This invention proposes an electric shaver.

[0040] In the embodiments of the present invention, please refer to Figures 1 to 4 The electric shaver includes a handle 100, a drive unit 200 located at the top of the handle 100, and a hair cutting unit 300. The drive unit 200 includes a motor housing 210, an elastic support member 230, and a motor unit 220 disposed within the motor housing 210. The motor unit 220 includes a base 224, a mover assembly 221, a stator assembly 222, and an elastic suspension assembly 223. The stator assembly 222 is fixedly mounted on the base 224, and the motor unit 220 is suspended within the motor housing 210 by the elastic support member 230. One end of the elastic suspension assembly 223 is fixedly connected to the base 224, and the other end is fixedly connected to the mover assembly 221, so that the mover assembly 221 and the stator assembly 222 are spaced apart; the base 224 is suspended from the motor housing 210 by the elastic support member 230; the stator assembly 222 drives the mover assembly 221 to reciprocate in a preset direction by electromagnetic action; the mover assembly 221 is connected to the hair cutting unit 300 to drive the hair cutting unit 300 to cut hair;

[0041] The handle 100 includes a support body 110 and a vibration damping device 120. The motor housing 210 is fixedly connected to the top of the support body 110. The vibration damping device 120 includes a vibration damping oscillator 121 and a buffer mechanism 124. The vibration damping oscillator 121 is suspended and fixedly connected to the support body 110 through the buffer mechanism 124 to absorb the angular vibration of the handle 100 caused by the drive device 200.

[0042] In this embodiment, it is understood that the electric shaver may further include a housing 600, which includes a handle 610 and a head 620 connected to the top of the handle 610. A drive unit 200 is disposed within the head 620, and the motor housing 210 is fixedly connected to the housing 600 by screws or other means. A handle 100 is installed within the handle 610. The user uses the electric shaver by gripping the handle 610 of the housing 600. The handle 100 can have various overall shapes; for example, it can be a long strip, a block, or a cylindrical structure. The elastic support 230 and the elastic suspension assembly 223 can have various structures and forms; for example, they can be metal spring structures or rubber or plastic structures with a certain support strength and elastic recovery force. The motor housing 210 provides support and mounting for structures such as the base 224, stator assembly 222, and mover assembly 221. Typically, to ensure stable support and rebound, the elastic support member 230 and the elastic suspension member are configured in two sets. That is, the two ends of the mover assembly 221 in the preset direction are respectively fixedly connected to the base 224 through a set of elastic suspension members 223; the two ends of the base 224 in the preset direction are respectively fixedly connected to the motor housing 210 through a set of elastic support members 230.

[0043] The hair cutting unit 300 can have various structures, such as a long-hair cutting head, a short-hair cutting head, or a mixed long-hair and short-hair cutting head. Different structures and forms of the hair cutting unit 300 can be selected and designed according to actual needs. The mover assembly 221 specifically includes a permanent magnet and a magnet mounting base. The permanent magnet is fixed to the magnet mounting base, and both ends of the magnet mounting base are connected to a bracket via a set of elastic suspension assemblies 223. The stator assembly 222 specifically includes an iron core, a winding frame, and a coil. The coil is wound around the winding frame and mounted on the iron core via the winding frame. The iron core can be a U-shaped iron core, an E-shaped iron core, etc., and different types of iron cores can be selected according to actual needs; no specific limitation is made here.

[0044] After alternating positive and negative currents are applied to the coils of the stator assembly 222, the stator assembly 222 forms an electromagnet. Through the magnetic induction between the electromagnet and the permanent magnet, and the elastic recovery of the two elastic suspension assemblies 223, the stator assembly 222 drives the mover assembly 221 to reciprocate along a preset direction. A hair cutting unit 300 is installed on the magnet mounting base of the mover assembly 221, and this reciprocating magnetic levitation linear motor can drive the moving blade of the electric shearing device to reciprocate rapidly.

[0045] The stator assembly 222 can be provided in only one set, and the mover assembly 221 can be provided in only one set or in two sets. When the reciprocating magnetic levitation linear motor has only one mover assembly 221, the hair cutting unit 300 can include a moving cutter head and a stationary cutter head, so that the moving cutter head is connected to the mover assembly 221 of the reciprocating magnetic levitation linear motor, and the reciprocating magnetic levitation linear motor drives the moving cutter head to move back and forth relative to the stationary cutter head to achieve cutting.

[0046] When the stator assembly 222 is configured as one set and the mover assembly 221 is configured as two sets, the permanent magnets of the two sets of mover assemblies 221 have opposite magnetic poles. Thus, one set of stator assembly 222 can simultaneously drive two sets of mover assemblies 221 to reciprocate in opposite directions. Of course, the stator assembly 222 can also be configured as two or more sets. When the stator assembly 222 is configured as two sets, the mover assembly 221 is also configured as two sets, with each set of mover assemblies 221 positioned above the stator assembly 222. In this case, the two sets of stator assemblies 222 respectively drive their corresponding stator assemblies 222 to reciprocate in opposite directions. The specific number of stator assemblies 222 and mover assemblies 221 is not limited here; it can be selected and designed according to the specific type of reciprocating magnetic levitation linear motor. When the reciprocating magnetic levitation linear motor has two moving parts 221, the hair cutting unit 300 includes two moving blades, which are respectively connected to the two moving parts 221. The reciprocating magnetic levitation linear motor drives the two moving blades to perform reciprocating motions in opposite directions to achieve cutting.

[0047] It should be noted that if directional indicators (such as up, down, left, right, front, back, etc.) are involved in the embodiments of the present invention, these directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. In this article, when an electric shaver is in use, one side of the hair cutting unit 300 is considered up, and the tail end of the handle 100 is considered down.

[0048] Both ends of the moving part 221 are connected to the base 224 via a set of elastic suspension components 223, which allows the moving part 221 and the stator component 222 to be spaced apart. In some embodiments, the moving part 221 can be suspended above the stator component 222 by the elastic suspension components 223, that is, both the hair cutting unit 300 and the moving part 221 are located above the stator component 222. Of course, in other embodiments, the moving part 221 can also be suspended below the stator component 222 by the elastic suspension components 223, with the base 224 located above the stator component 222, and the hair cutting unit 300 mounted on the base 224, that is, the hair cutting unit 300 and the moving part 221 are located on the upper and lower sides of the stator component 222, respectively. The specific positions of the moving part 221, the stator part 222, and the hair cutting unit 300 are not limited here. It is sufficient that the stator part 222 can drive the moving part 221 to reciprocate along a preset direction and drive the moving blade of the hair cutting unit 300 to move to cut the hair.

[0049] It should be noted that angular vibration refers to the vibration of a particle only around an axis. When the reciprocating magnetic levitation linear motor is running, especially when the hair cutting unit 300 and the mover assembly 221 are both positioned above the stator assembly 222, the stator assembly 22 moves linearly in a preset direction, causing the entire drive device 200 to oscillate around the center of mass of the mover assembly 221 in the longitudinal plane. This vibration is then transmitted to the handle 100, causing angular vibration in the handle 100, making the vibration particularly strong. Users experience a strong vibration when gripping the handle 100, resulting in a poor user experience. By setting up the elastic suspension assembly 223, the base 224 is suspended from the motor housing 210 via the elastic support 230. The vibration of the mover assembly 221 is first transmitted to the base 224 via the elastic suspension assembly 223, where most of it is absorbed by the stator assembly 222 on the base 224 before being further absorbed by the elastic support 230, and finally transmitted to the motor housing 210. In this way, most of the vibration of the entire drive unit 200 is absorbed and buffered by the stator assembly 222 and the elastic support 230, thereby effectively reducing the overall vibration of the housing. Since one end of the elastic support 230 is connected to the base 224 and the other end is connected to the motor housing 210, compared with the scheme where one end of the elastic support 230 is connected to the mover assembly 221 and the other end is connected to the motor housing 210, the weight of the base 224 plus the stator assembly 222 is much greater than the weight of the mover assembly 221 plus the hair cutting unit 300. This results in a smaller initial acceleration from the mover assembly 221 to the elastic support 230, and thus a smaller swing amplitude of the elastic support 230 relative to the motor housing 210, which is more conducive to vibration reduction.

[0050] The motor housing 210 can be fixedly connected to the support body 110 by means of plug-in connection, screw connection, snap-fit ​​connection, etc. The damping vibrator 121 may specifically include a counterweight 122, etc. The structure of the buffer mechanism 124 can be varied; for example, the buffer mechanism 124 can be one or more combinations of springs, dampers, etc., as long as it can achieve a certain degree of buffering and shock absorption. The specific structure of the buffer mechanism 124 is not limited here. The connection method between the buffer mechanism 124 and the mounting body can also be varied; for example, the buffer mechanism 124 and the mounting body can be connected by screws, snap-fit ​​connections, welding, etc. The installation position of the vibration damping device 120 can be varied; for example, the vibration damping device 120 can be placed at the tail end, middle, etc. of the handle 100. When the damping vibrator 121 is suspended and fixedly connected to the support body 110 through the buffer mechanism 124 to absorb the vibration of the handle 100 along a preset direction, the vibration damping device 120 is equivalent to a shock absorber. In actual use, the vibration damping oscillator 121 does not directly contact the support body 110, but is elastically connected to the support body 110 through the buffer mechanism 124. The vibration damping oscillator 121 oscillates back and forth in a preset direction, and the oscillation direction of the vibration damping oscillator 121 is opposite to the reciprocating motion direction of the mover assembly 221. The natural frequency of the vibration damping device 120 is approximately equal to the natural frequency of the drive device 200, so as to absorb the angular vibration transmitted from the drive device 200 to the handle 100. The electric shaver of the present invention has a more comfortable feel when used, which is especially evident under high-frequency vibration.

[0051] The electric shaver of the present invention has one end of the elastic suspension assembly 223 fixedly connected to the base 224 and the other end fixedly connected to the mover assembly 221, so that the mover assembly 221 and the stator assembly 222 are spaced apart; the base 224 is suspended from the motor housing 210 by an elastic support member 230. In this way, the mover assembly 221 is connected to the base 224 through the elastic suspension assembly 223, and the base 224 is connected to the motor housing 210 through the elastic support member 230. The weight of the stator assembly 222 on the base 224 is fully utilized to achieve buffering and shock absorption, so that the swing amplitude of the elastic support member 230 relative to the motor housing 210 is smaller, and thus the vibration amplitude transmitted to the motor housing 210 is smaller.

[0052] Meanwhile, the handle 100 includes a support body 110 and a vibration damping device 120, with the motor housing 210 fixedly connected to the top of the support body 110. The vibration damping device 120 includes a vibration damping element 121 and a buffer mechanism 124. The vibration damping element 121 is suspended and fixedly connected to the support body 110 via the buffer mechanism 124 to absorb vibrations of the handle 100 along a predetermined direction. Thus, by providing the vibration damping device 120 on the support body 110 of the handle 100, and suspending the vibration damping element 121 on the support body 110 via the buffer mechanism 124, the vibration damping element 121 absorbs the angular vibrations of the handle 100, further reducing the vibrations transmitted from the drive device 200 to the handle 100. Therefore, the drive device 200 of the electric shaver of the present invention achieves primary vibration damping through the elastic support member 230, while the handle 100 achieves secondary vibration damping through the vibration damping device 120, effectively reducing the vibration of the entire handle 100 and improving the user experience of the electric shaver.

[0053] In one embodiment, such as Figure 2 , Figure 4 and Figure 5 As shown, the support body 110 is a long strip extending vertically, and the vibration damping device 120 is located at the end of the support body 110 away from the drive device 200.

[0054] In this embodiment, the support body 110 is designed to be an elongated strip extending vertically. Therefore, the cross-sectional shape of the support body 110 can be varied, including circular, elliptical, rectangular, polygonal, and irregular shapes, without specific limitations. To provide sufficient installation space and facilitate user grip, the shaver handle 100 is typically elongated. It is understood that since the drive device 200 is fixedly connected to the top of the support body 110, and the support body 110 is an elongated strip extending vertically, the vibration of the drive device 200 transmitted to the handle 100 will be particularly strong at the tail end of the handle 100 (the end furthest from the drive device 200). Therefore, by placing the vibration damping device 120 at the end of the support body 110 furthest from the drive device 200, the vibration of the handle 100 can be reduced to the greatest extent possible, further improving user comfort.

[0055] Furthermore, the electric shaver also includes a battery 400, which is embedded in the support body 110 and located between the vibration damping device 120 and the drive device 200. Specifically, the electric shaver also includes a circuit board and a conductive structure. The circuit board is electrically connected to the battery 400 through the conductive structure, and the circuit board is connected to the coil of the stator assembly 222 through wires to provide current to the stator assembly 222. The conductive structure can be wires or other electrical connection structures, and the battery 400 can be charged by an external power source. By embedding the battery 400 in the support body 110 and located between the vibration damping device 120 and the drive device 200, the battery 400 increases the weight of the handle 100, which can reduce vibration to some extent. The vibration damping device 120 is located at the end of the battery 400 furthest from the drive device 200, so that the support body 110 is basically located at the very end of the support body 110, thus improving the vibration damping effect of the vibration damping device 120. At the same time, by making full use of the space below the battery 400 to install the vibration damping device 120, the overall structure becomes more compact.

[0056] In one embodiment, please refer to Figure 2 , Figures 4 to 8 The support body 110 has a suspension space 111. The buffer mechanism 124 includes two buffers 125. The vibration damping oscillator 121 is fixedly connected to the support body 110 at both ends in a preset direction through a buffer 125 so as to be suspended in the suspension space 111.

[0057] In this embodiment, the structure of the buffer 125 can be varied. For example, the buffer 125 can be a leaf spring or a cylindrical spring, as long as it can achieve a certain level of buffering; no specific limitation is made here. By creating a suspension space 111 on the support body 110, the vibration damping oscillator 121 is embedded in the suspension space 111 without increasing the thickness of the entire handle 100. It is understood that the volume of the suspension space 111 is larger than the volume of the entire vibration damping device 120. The vibration damping oscillator 121 is fixedly connected to the support body 110 at both ends in a preset direction by a buffer 125. Thus, the vibration damping oscillator 121 can oscillate back and forth in the preset direction through the buffer 125, thereby absorbing the vibration of the handle 100 in the preset direction.

[0058] Furthermore, such as Figure 10 and Figure 11 As shown, the buffer 125 includes at least one disc-shaped leaf spring structure 126. The central connecting end 127 of the leaf spring structure 126 is fixedly connected to the end of the damping oscillator 121 in a predetermined direction, and the external connecting end 129 of the leaf spring structure 126 is fixedly connected to the support body 110.

[0059] In this embodiment, the leaf spring structure 126 is a sheet-like mechanism. The leaf spring structure 126 has a spiraling structure from the center outwards; the leaf spring sheet can spiral in a mosquito coil shape, a racetrack shape, etc., without specific limitation. The buffer 125 may include only one leaf spring structure 126, or it may include two or more stacked or spaced leaf spring structures 126. The number of leaf spring structures 126 can be selected according to actual needs, without specific limitation. The central connecting end 127 of the leaf spring sheet refers to the starting end of the central spiral, and the external connecting end 129 of the leaf spring structure 126 refers to the ending end of the external spiral. The central connecting end 127 of the leaf spring structure 126 and the damping oscillator 121 can be fixedly connected by screws, welding, etc. The external connecting end 129 of the leaf spring structure 126 and the support body 110 can be fixedly connected by screws, welding, etc. By making the leaf spring structure 126 centrally spiral, compared to other structures, the elastic arm of the leaf spring structure 126 can be longer within the same space, thus providing sufficient elastic force and support to the damping oscillator 121. In other words, the leaf spring structure 126 of this embodiment can occupy less space while ensuring sufficient elastic force and support, resulting in a smaller overall volume of the vibration damping device 120.

[0060] In one embodiment, such as Figures 5 to 11 As shown, the vibration damping device 120 also includes a connecting block 131 fixedly connected to the support body 110; the external connecting ends 129 of the two buffers 125 are respectively fixedly connected to the two ends of the connecting block 131, and the connecting block 131 and the vibration damping oscillator 121 are spaced apart.

[0061] In this embodiment, the connecting block 131 and the support body 110 can be fixedly connected by screws, embedding, riveting, welding, etc. The connecting block 131 can be located above, below, in front of, or behind the damping oscillator 121, etc., without specific limitation. This allows the damping device 120 to include the connecting block 131, with the external connecting ends 129 of the two buffers 125 respectively fixedly connected to both ends of the connecting block. Thus, the damping oscillator 121, the two buffers 125, and the connecting block 131 can be connected into a module. Therefore, during installation of the damping device 120, only the connecting block 131 needs to be installed on the support body 110 to achieve the connection between the entire damping device 120 and the support body 110, making the installation of the entire damping device 120 more convenient and quick. Since the connecting block 131 and the damping oscillator 121 are spaced apart, the connecting block 131 will not affect the movement of the damping oscillator 121, and therefore will not affect the damping effect of the damping device 120. The connecting block 131 and the external connecting end 129 of the buffer 125 can be fixedly connected by welding, riveting, screw connection, or other methods. To facilitate the assembly and disassembly of the connecting block 131 and the buffer 125, optionally, the external connecting ends 129 of the two buffers 125 can be fixedly connected to the connecting block 131 by at least one fastener 130. The fastener 130 can specifically be a screw structure. Of course, the fastener 130 can also be a bolt, rivet, or other structure.

[0062] In one embodiment, please refer again Figures 5 to 11 The vibration damping oscillator 121 includes a counterweight 122 and a central shaft 123. The central shaft 123 is installed on the counterweight 122 through and around its axis. The two ends of the central shaft 123 are fixedly connected to two central connection ends 127 respectively.

[0063] In this embodiment, the cross-section of the central shaft 123 is non-circular, and the counterweight 122 has an installation channel adapted to the central shaft 123. The central shaft 123 passes through the installation channel of the counterweight 122, and the outer wall of the central shaft 123 and the inner wall of the installation channel of the counterweight 122 achieve positioning of the central shaft 123 and the counterweight 122 around the axis of the central shaft 123. This prevents the central shaft 123 from rotating relative to the counterweight 122 and avoids the counterweight 122 deviating from its movement trajectory. The counterweight 122 can specifically be a metal block. The shape of the counterweight 122 can be varied; for example, the cross-sectional shape of the counterweight 122 can be rectangular, circular, elliptical, irregular, etc., and no specific limitation is made here. The two ends of the central shaft 123 are fixedly connected to the central connecting end 127, that is, the counterweight 122 is fixed to the leaf spring structure 126 through the central shaft 123. Compared with the central connecting end 127 of the leaf spring structure 126 being directly fixed to the counterweight 122, this can effectively reduce installation errors, thereby ensuring the weight balance of the counterweight 122 in the preset direction, and making the shock absorption amplitude of the counterweight 122 consistent in the preset direction, avoiding a situation where one side has strong vibration and the other side has weak vibration. At the same time, since the vibration of the buffer 125 is first transmitted to the connection between the central connecting end 127 and the central shaft 123, the central shaft 123 is prone to damage. Therefore, replacing the central shaft 123 is less costly than replacing the counterweight 122.

[0064] In one embodiment, such as Figure 5 , Figure 6 , Figures 9 to 11 As shown, the central connecting end 127 has a positioning socket 128, and the central shaft 123 is adapted to be inserted into the positioning socket 128. The vibration damping device 120 also includes a first connecting member 133, which passes through the positioning socket 128 and the end of the central shaft 123 to fix the central connecting end 127 and the central shaft 123. The first connecting member 133 can specifically be a screw. Allowing the central shaft 123 to be adapted to be inserted into the positioning socket 128, thus achieving the pre-positioning installation of the leaf spring structure 126 and the central shaft 123, makes subsequent screw connection easier. Allowing the first connecting member 133 to pass through the positioning socket 128 of the central connecting shaft to fix the central connecting section of the leaf spring structure 126 and the central shaft 123, thus achieving a detachable connection between the leaf spring structure 126 and the central shaft 123, makes subsequent maintenance and replacement more convenient.

[0065] In one embodiment, please refer to Figure 5 , Figure 6 , Figures 9 to 11The two ends of the central shaft 123 extend out of the counterweight 122. The vibration damping device 120 also includes a first pad 134 and a second pad 135 respectively disposed on both sides of the leaf spring structure 126. The first pad 134 is sleeved on the outer periphery of the central shaft 123 and sandwiched between the central connecting end 127 and the counterweight 122. The second pad 135 is sandwiched between the first connecting member 133 and the central connecting end 127. The bracket body 110 has a clearance hole 113 corresponding to the first connecting member 133. The inner wall surface of the clearance hole 113 is located on the outer periphery of the outer wall of the second pad 135.

[0066] In this embodiment, the first connector 133 is specifically a screw, and the second washer 135 is sleeved on the shank of the screw and sandwiched between the screw head 620 and the central connecting end 127. By setting the first washer 134 and the second washer 135, the first washer 134 is sandwiched between the central connecting end 127 and the counterweight 122, and the second washer 135 is sandwiched between the first connector 133 and the central connecting end 127. The first washer 134 and the second washer 135 can effectively prevent the leaf spring from sticking to the counterweight 122, and make the connection between the first connector 133, the central connecting end 127 of the leaf spring, and the central shaft 123 more stable and less prone to loosening. By opening a clearance hole 113 at the position of the bracket body 110 corresponding to the first connector 133, the inner wall surface of the clearance hole 113 is located outside the outer peripheral wall of the second pad 135, which can effectively prevent the vibration damping device 120 from colliding with the bracket body 110 when it swings in a preset direction, and further ensure the vibration damping effect of the vibration damping device 120.

[0067] In one embodiment, such as Figures 10 to 12 As shown, the two opposite sidewalls of the connecting block 131 extending along a preset direction are recessed to form a limiting groove 132; the top wall of the suspension space 111 is provided with two opposite and spaced limiting protrusions 112; the two limiting protrusions 112 are correspondingly embedded in the two limiting grooves 132 to restrict the movement of the connecting block 131 relative to the support body 110 in a preset direction; the electric shaver also includes a second connector 500, which passes through the limiting protrusions 112 and fixes the connecting support body 110 and the connecting block 131.

[0068] In this embodiment, by making the two opposite sidewalls of the connecting block 131 extending in a preset direction recessed to form a limiting groove 132, and by providing two opposite and spaced limiting protrusions 112 on the top wall of the suspension space 111, the connecting block 131 is embedded in the top of the suspension space 111 during installation. The limiting protrusions 112 on the top wall of the suspension space 111 are inserted into the limiting grooves 132 of the connecting block 131 to restrict the movement of the connecting block 131 in the preset direction, thus achieving the pre-positioning installation of the connecting block 131 and the bracket body 110. The second connecting member 500 can be a screw, rivet, or other structure. Optionally, the second connecting member 500 can be a screw for easy disassembly and assembly. The second connecting member 500 passes through the limiting protrusions 112 and fixes the bracket body 110 and the connecting block 131, making full use of the limiting protrusions 112 to ensure the structural strength of the bracket body 110, making the connection between the bracket body 110 and the connecting block 131 more stable and reliable. By connecting the connecting block 131 to the top wall of the suspension space 111, the entire counterweight block 122 is located below the connecting block 131. Compared with setting the connecting block 131 on the bottom wall or side wall of the suspension space 111, the influence of gravity on the buffer 125 is reduced, and the vibration damping effect of the vibration damping device 120 is improved.

[0069] In one embodiment, the difference between the natural frequency of the vibration damping device 120 and the natural frequency of the drive device 200 is greater than or equal to -5 Hz and less than or equal to 5 Hz; and / or, the mass of the vibration damping oscillator 121 is positively correlated with the mass of the mover assembly 221.

[0070] In this embodiment, when the absolute value of the difference between the natural frequency of the damping device 120 and the natural frequency of the driving device 200 is greater than 5 Hz, the damping effect of the damping device 120 is not significant due to the excessive difference between their natural frequencies. By ensuring that the absolute value of the difference between the natural frequency of the damping device 120 and the natural frequency of the driving device 200 is less than 5 Hz, the damping device 120 can absorb the vibration of the handle 100 to a greater extent, thereby reducing the overall vibration sensation and improving the user experience.

[0071] It is understandable that the greater the mass of the mover assembly 221, the stronger the vibration of the handle 100. By making the mass of the damping oscillator 121 positively correlated with the mass of the mover assembly 221—that is, when the mass of the mover assembly 221 is greater, the mass of the damping oscillator 121 is also set to be greater—the angular vibration of the handle 100 can be absorbed more effectively. The hair cutting unit 300 includes a moving blade head, and the mover assembly 221 is connected to the moving blade head to drive the moving blade head to reciprocate along a preset direction. The amplitude of the drive device 200 is related to the sum of the masses of the mover assembly 221 and the moving blade head. Optionally, the mass of the damping oscillator 121 is set to be positively correlated with the sum of the masses of the mover assembly 221 and the moving blade head. In this way, the shock absorption effect of the damping oscillator 121 can be further improved. Specifically, the ratio of the mass of the damping oscillator 121 to the sum of the masses of the mover assembly 221 and the moving blade head is less than 0.9 and greater than 1.1. When the ratio of the mass of the damping oscillator 121 to the sum of the masses of the moving assembly 221 and the moving cutter head is less than 0.9 but greater than 1.1, the amplitude of the damping oscillator 121 differs significantly from the amplitude of the drive device 200, resulting in a poorer overall vibration damping effect. However, by ensuring that the ratio of the mass of the damping oscillator 121 to the sum of the masses of the moving assembly 221 and the moving cutter head is greater than or equal to 0.9 and less than or equal to 1.1, the overall amplitude of the drive device 200 is made essentially the same as the amplitude of the damping oscillator 121. This allows the damping device 120 to absorb the vibration of the handle 100 to a greater extent, improving product quality.

[0072] The mass of the damping oscillator 121 is also affected by the lateral dimensions of the suspension space 111. In the above embodiment where the suspension space 111 is provided on the support body 110, the mass of the damping oscillator 121 is further negatively correlated with the gap between the side wall of the damping oscillator 121 in the predetermined direction and the inner wall of the suspension space 111. It can be understood that when the gap between the side wall of the damping oscillator 121 in the predetermined direction and the inner wall of the suspension space 111 is large, the allowable amplitude of the damping oscillator 121 is large, allowing for a smaller mass. When the gap between the side wall of the damping oscillator 121 in the predetermined direction and the inner wall of the suspension space 111 is small, the allowable amplitude of the damping oscillator 121 is small, requiring a larger mass for the damping oscillator 121. By making the mass of the damping oscillator 121 negatively correlated with the gap between the side wall of the damping oscillator 121 in a preset direction and the inner wall of the suspension space 111, the effective swing of the damping device 120 can be guaranteed, thereby making the damping effect of the damping device 120 better.

[0073] In one embodiment, please refer to Figure 1 and Figure 2The electric shaver also includes a housing 600, which includes a handle 610 and a head 620 connected to the top of the handle 610. A drive unit 200 is fixedly installed inside the head 620, and a handle 100 is installed inside the handle 610. A groove 114 is formed on the support body 110 near the upper part of the counterweight 122, and a sealing ring 700 is embedded in the groove 114. The support body 110 abuts against the inner wall of the housing 600 through the sealing ring 700. The outer wall of the vibration damping element 121 is spaced apart from the inner wall of the housing 600. The housing 600 provides protection for the handle 100, drive unit 200, etc. Specifically, the motor of the drive unit 200 can be screwed to the housing 600 to fix the drive unit 200 inside the head 620 of the housing 600. By creating a groove 114 on the bracket body 110, the bracket body 110 abuts against the inner wall of the housing 600 through the sealing ring 700, preventing the bracket body 110 from directly contacting the housing 600. This further prevents the vibration of the bracket body 110 from being directly transmitted to the housing 600, thereby reducing the user's grip vibration.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An electric shaver, comprising a handle, a drive mechanism disposed at the top of the handle, and a hair cutting unit, characterized in that, The driving device includes a motor housing, a base disposed within the motor housing, a mover assembly, a stator assembly, an elastic suspension assembly, and an elastic support member. The stator assembly is fixedly installed on the base. One end of the elastic suspension assembly is fixedly connected to the base, and the other end is fixedly connected to the mover assembly, such that the mover assembly and the stator assembly are spaced apart. The base is suspended from the motor housing via the elastic support member. The stator assembly drives the mover assembly to reciprocate along a preset direction via electromagnetic action. The mover assembly is connected to the hair cutting unit to drive the hair cutting unit to cut hair. The handle includes a support body and a vibration damping device. The motor housing is fixedly connected to the top of the support body. The vibration damping device includes a vibration damping element and a buffer mechanism. The vibration damping element is suspended and fixedly connected to the support body through the buffer mechanism to absorb the angular vibration of the handle caused by the drive device.

2. The electric shaver as described in claim 1, characterized in that, The main body of the support is a long strip extending vertically, and the vibration damping device is located at the end of the main body of the support away from the driving device.

3. The electric shaver as described in claim 2, characterized in that, The electric shaver also includes a battery, which is embedded in the support body and located between the vibration damping device and the drive device.

4. The electric shaver as described in any one of claims 1 to 3, characterized in that, The main body of the support has a suspension space. The buffer mechanism includes two buffer components. The vibration damping oscillator is fixedly connected to the main body of the support through one of the buffer components at each end in the preset direction so as to be suspended in the suspension space.

5. The electric shaver as described in claim 4, characterized in that, The buffer includes at least one disc-shaped leaf spring structure, the central connecting end of the leaf spring structure is fixedly connected to the end of the damping oscillator in the preset direction, and the external connecting end of the leaf spring structure is fixedly connected to the support body.

6. The electric shaver as described in claim 5, characterized in that, The vibration damping device further includes a connecting block fixedly connected to the main body of the support; the external connecting ends of the two buffer components are respectively fixedly connected to the two ends of the connecting block, and the connecting block and the vibration damping oscillator are spaced apart.

7. The electric shaver as described in claim 6, characterized in that, The vibration damping oscillator includes a counterweight and a central shaft. The central shaft is installed on the counterweight through and around its axis. The two ends of the central shaft are respectively fixedly connected to the two central connecting ends.

8. The electric shaver as described in claim 7, characterized in that, The central connecting end is provided with a positioning hole, and the central shaft is adapted to be inserted into the positioning hole; the vibration damping device also includes a first connecting member, which passes through the positioning hole and the end of the central shaft to fix the central connecting end and the central shaft.

9. The electric shaver as described in claim 8, characterized in that, The counterweight extends from both ends of the central shaft. The vibration damping device also includes a first washer and a second washer disposed on both sides of the leaf spring structure. The first washer is sleeved on the outer periphery of the central shaft and sandwiched between the central connecting end and the counterweight. The second washer is sandwiched between the first connecting member and the central connecting end. The bracket body has a clearance hole corresponding to the first connecting member, and the inner wall of the clearance hole is located on the outer periphery of the second washer.

10. The electric shaver as described in claim 6, characterized in that, The connecting block extends along the preset direction with two opposite sidewalls recessed to form a limiting groove; the top wall of the suspension space is provided with two opposite and spaced limiting protrusions; the two limiting protrusions are correspondingly embedded in the two limiting grooves to restrict the movement of the connecting block relative to the bracket body in the preset direction; the electric shaver also includes a second connecting member, which passes through the limiting protrusions and is fixedly connected to the bracket body and the connecting block.

11. The electric shaver as described in any one of claims 1 to 3, characterized in that, The difference between the natural frequency of the vibration damping device and the natural frequency of the driving device is greater than or equal to -5Hz and less than or equal to 5Hz; and / or, the mass of the vibration damping oscillator is positively correlated with the mass of the moving part assembly.

12. The electric shaver as described in claim 7, characterized in that, The electric shaver also includes a housing, which includes a handle and a head connected to the top of the handle. The drive device is fixedly installed in the head, and the handle is installed in the handle. A groove is provided on the support body near the upper part of the counterweight, and a sealing ring is embedded in the groove. The support body abuts against the inner wall of the housing through the sealing ring. The outer wall of the vibration damping element is spaced apart from the inner wall of the housing.

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