A reciprocating drive head for a shaver and a shaver

Abstract

This utility model discloses a reciprocating drive main unit and a shaver, including a housing; a drive assembly, which includes a coil plate, multiple coil groups, a transmission plate, and a magnet group. The coil plate is mounted on the housing; the multiple coil groups are disposed on the coil plate and can be arranged in a linear direction; the magnet group includes multiple magnets, which are mounted on the transmission plate and distributed in a linear direction; the coil groups are used to generate a magnetic field when energized and magnetically coupled with the magnets to drive the transmission plate to reciprocate in a linear direction; the transmission plate is connected to a shaver head assembly. A shaver includes a reciprocating drive main unit; a shaver head assembly, which includes a shaver holder and a shaver foil, the shaver foil being mounted on the shaver holder; the shaver holder is connected to a transmission plate. This utility model can achieve linear reciprocating motion of the transmission plate by magnetically coupling the electromagnetic field generated by energizing the multiple coil groups of the drive assembly with the multiple magnets on the transmission plate, thereby driving the shaver head assembly to reciprocate and achieve shaving through magnetic transmission.

Description

Technical Field

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

[0002] Electric shavers typically consist of a shaver head assembly and a main unit. The shaving method of the shaver head assembly is mainly achieved through rotation or reciprocating motion. In reciprocating shavers, a drive structure is installed within the main unit to drive the shaver head assembly to reciprocate.

[0003] In related technologies, the structures that drive reciprocating motion mainly include two types. One type is to directly use a linear motor to drive the cutter head assembly to reciprocate. The other type is to use a rotary motor in conjunction with a transmission structure to convert the rotary motor shaft rotation motion into linear motion, which then drives the cutter head assembly to reciprocate.

[0004] Regardless of whether a rotary motor or a linear motor is used as the driving force, once installed in the housing, the motor body will typically vibrate during operation. This results in strong vibrations transmitted to the housing and high noise levels during shaving. Furthermore, due to the limitations of existing motor structures, the reciprocating oscillation speed of rotary or linear motors is relatively low, which can cause hairs to be pulled or the skin to become stuck, resulting in pain during shaving. Utility Model Content

[0005] In order to overcome at least one of the defects described in the prior art, the present invention provides a reciprocating drive host for a shaver and a shaver, which can achieve linear reciprocating motion of the transmission plate by magnetic coupling between the electromagnetic field generated by energizing multiple coil groups of the drive component and multiple magnets on the transmission plate, thereby driving the blade assembly to reciprocate to achieve shaving through magnetic transmission.

[0006] The technical solution adopted by this utility model to solve its problem is: A reciprocating drive unit for a razor, comprising, chassis; A drive assembly includes a coil plate, multiple coil groups, a transmission plate, and a magnet group. The coil plate is mounted on the housing. The multiple coil groups are disposed on the coil plate and can be arranged in a straight line. The magnet group includes multiple magnets, which are mounted on the transmission plate and distributed in the straight line. The coil groups generate a magnetic field when energized and magnetically couple with the magnets to drive the transmission plate to reciprocate in the straight line. The transmission plate is connected to the cutter head assembly.

[0007] As an optional implementation, the drive assembly includes a transmission base mounted on the housing, the coil plate and the transmission plate both mounted on the transmission base, the transmission plate being movably engaged with the transmission base along the linear direction; an elastic member is provided between the transmission plate and the transmission base.

[0008] As an optional implementation, the transmission seat is provided with a mounting groove, the coil plate and the transmission plate are both mounted in the mounting groove, and the elastic member is connected between the end of the transmission plate and the side wall of the mounting groove.

[0009] As an optional implementation, the housing is provided with a mounting cavity and a mounting port, the mounting port communicating with the mounting cavity; the transmission seat is mounted on the mounting port and covers the mounting cavity; The mounting cavity is equipped with a power supply structure and a control board. The wiring terminals of the coil group extend into the mounting cavity and are electrically connected to the power supply structure and the control board.

[0010] As an optional implementation, the drive assembly further includes a conductive sheet mounted on the transmission base, with terminals on the coil plate electrically connected to the conductive sheet, and the conductive sheet extending into the mounting cavity and electrically connected to the power supply structure.

[0011] As an optional implementation, the elastic component includes an elastic sheet, which comprises a plurality of interconnected elastic segments.

[0012] As an optional implementation, the drive assembly includes two coil plates, which are respectively disposed above and below the transmission plate and are spaced apart to form a transmission interval; the transmission plate is located in the transmission interval.

[0013] As an optional implementation, the drive assembly further includes a connecting plate and a transmission rod. The connecting plate has a first positioning connection part on both sides, and the transmission plate has a second positioning connection part on both sides. The second positioning connection part is positioned and engaged with the first positioning connection part. One end of the transmission rod is connected to the connecting plate, and the other end of the transmission rod is connected to the cutter head assembly.

[0014] As an optional implementation, the reciprocating drive host also includes a waterproof plate, which is snapped onto the housing and sealed over the drive assembly; The waterproof membrane is provided with a guide hole extending along the straight line direction, the transmission rod passes through the guide hole and extends out of the guide hole, and the transmission rod is slidably engaged with the guide hole.

[0015] A razor, comprising, The aforementioned reciprocating drive host; A cutter head assembly, comprising a cutter holder and a cutter mesh, the cutter mesh being mounted on the cutter holder; the cutter holder being connected to the transmission plate.

[0016] In summary, this utility model has the following technical effects: 1. The shaving head assembly reciprocates by coupling multiple coil groups on the coil board with multiple magnets on the transmission board, thereby achieving shaving. The coil groups do not vibrate when energized, so only the reciprocating motion of the shaving head assembly has a certain vibration during the shaving process. Compared with the existing technology that uses linear motors or rotor motors for driving, this reduces the vibration noise of the drive structure itself, making the shaver quieter when it is working.

[0017] 2. Since its drive assembly is formed by a coil plate with multiple coil groups and a transmission plate with multiple magnets arranged opposite each other, the height of the drive part of the drive assembly is the superimposed height of the two plates. Compared with the rotor motor or linear motor in the prior art, it has a smaller assembly thickness. Thus, without changing the structure of the original blade assembly, the thickness of the housing applied to the shaver can be significantly reduced, thereby reducing the overall size of the shaver.

[0018] 3. The drive component uses electromagnetic field to magnetically couple with the fixed magnet of the transmission plate to do work, reducing mechanical transmission. Therefore, it generates less heat during drive and has lower requirements for the heat dissipation structure of the host. The magnetic coupling method replaces the traditional mechanical transmission structure for drive. Drive can be realized immediately as soon as the current is applied to the coil group, reducing the transmission time caused by the mechanical transmission structure. This reduces power delay, improves the start-up time of the cutter head assembly connected to the transmission plate, and increases the reciprocating oscillation speed, reducing jamming or whisker clamping problems caused by low speed of the cutter head assembly. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the reciprocating drive host of this utility model; Figure 2 This is an exploded structural diagram of the reciprocating drive host of this utility model. Figure 3 This is another perspective view of the exploded structure of the reciprocating drive host of this utility model. Figure 4This is a schematic diagram of the reciprocating drive host of this utility model from another perspective. Figure 5 This is a schematic diagram of the drive component of this utility model; Figure 6 This is a schematic diagram of the structure of the razor of this utility model; Figure 7 This is a schematic diagram of the razor of this utility model from another perspective; Figure 8 This is a schematic diagram of the cutter head assembly of this utility model.

[0021] The meanings of the reference numerals in the attached drawings are as follows: 10, housing; 11, mounting cavity; 111, snap-fit ​​block; 12, power supply structure; 13, control board; 20, drive assembly; 21, coil plate; 22, coil group; 221, conductive sheet; 23, transmission plate; 231, second positioning connection part; 24, magnet; 25, transmission seat; 26, elastic component; 27, connecting plate; 271, first positioning connection part; 28, transmission rod; 29, waterproof plate; 291, guide hole; 292, buckle; 293, sealing ring; 30, cutter head assembly; 31, cutter holder; 311, connecting hole; 32, cutter mesh. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0028] See Figures 1-5 This utility model discloses a reciprocating drive main unit for a shaver, including a housing 10 and a drive assembly 20, wherein the drive assembly 20 is installed in the housing 10. Specifically, the drive assembly 20 includes a coil plate 21, multiple coil groups 22, a transmission plate 23, and a magnet group 24. The coil plate 21 and the transmission plate 23 are both installed in the housing 10, and the coil plate 21 can be located above the transmission plate 23, below the transmission plate 23, or both above and below the transmission plate 23.

[0029] Multiple coil groups 22 are arranged on the coil plate 21, and the multiple coil groups 22 can be arranged in a straight line (see...). Figure 4 The magnets 24 are arranged on the transmission plate 23 and are distributed in a straight line. The multiple coil groups 22 of the coil plate 21 are arranged opposite to the multiple magnets 24 on the transmission plate 23. The coil groups 22 are used to generate a magnetic field when energized and magnetically couple with the magnets 24 to drive the transmission plate 23 to reciprocate in a straight line. The transmission plate 23 is connected to the cutter head assembly 30.

[0030] Based on the above structure, the reciprocating drive host of the shaver of this utility model can be used in devices such as shavers and razors that require a reciprocating drive structure.

[0031] Taking the reciprocating drive assembly 20 as an example in a shaver, during assembly, the coil plate 21 and transmission plate 23 of the drive assembly 20 are mounted on the housing 10, and the terminals of the coil groups 22 on the coil plate 21 are connected to the power supply. After power is applied, the multiple coil groups 22 on the coil plate 21 generate a magnetic field. At the moment of power-on and after power-on, adjacent coil groups 22 can generate magnetic fields with opposite and alternating magnetic poles. For example, the magnetic poles of the multiple coil groups 22 in the linear direction are arranged as NSNS… etc. Correspondingly, the magnetic poles of the multiple magnets 24 on the transmission plate 23 are also arranged in the linear direction as NSNS… etc., alternating. In this way, the change of current on the coil plate 21 can generate a continuous and alternating magnetic field, dynamically creating an array of “electromagnetic poles” of NSNS…, which, together with the fixed NSNS of the multiple permanent magnets 24 on the transmission plate 23, creates a magnetic field. …The coupling generates thrust, which drives the transmission plate 23 to swing back and forth in a straight line, thereby driving the blade assembly 30 connected to the transmission plate 23 to swing back and forth, thus realizing reciprocating shaving.

[0032] Of course, the above arrangement of magnetic poles is only used to explain the driving process. The actual arrangement of magnetic poles can be selected and set according to actual needs. The magnetic poles of multiple coil groups on the coil board can be changed by the change of current, and the magnetic poles of multiple magnets on the transmission board can be selected and arranged according to actual needs.

[0033] In this embodiment, the shaving head assembly 30 is reciprocated by coupling the energization of multiple coil groups 22 on the coil plate 21 with multiple magnets 24 on the transmission plate 23, thereby achieving shaving. The coil groups 22 do not vibrate when energized, so only the reciprocating motion of the shaving head assembly 30 has a certain vibration during the shaving process. Compared with the linear motor or rotor motor used in the prior art, this reduces the vibration noise of the drive structure itself, making the shaver quieter when it is working.

[0034] Furthermore, since the drive assembly 20 is formed by the coil plate 21 with multiple coil groups 22 and the transmission plate 23 with multiple magnets 24 arranged opposite to each other, the height of the drive part of the drive assembly 20 is the superimposed height of the two plates. Compared with the rotor motor or linear motor in the prior art, it has a smaller assembly thickness. Thus, without changing the structure of the original blade assembly 30, the thickness of the housing 10 applied to the shaver can be significantly reduced, thereby reducing the overall size of the shaver.

[0035] It should also be emphasized that if a rotor motor or linear motor in the prior art is used to output the motor shaft and cooperate with the transmission structure to perform mechanical work, not only will a lot of noise be generated, but the mechanical structure will also fatigue and heat up. However, the drive component 20 of this application performs work by magnetic coupling between the electromagnetic field and the fixed magnet 24 of the transmission plate 23, reducing the mechanical transmission structure. Therefore, the heat generated during driving is smaller, and the requirements for the heat dissipation structure of the host are lower.

[0036] More specifically, by replacing the traditional mechanical transmission structure with magnetic coupling, the drive can be realized immediately as soon as the current is supplied to the coil group 22, reducing the transmission time caused by the mechanical transmission structure. This reduces power delay, increases the start-up time of the cutter head assembly 30 connected to the transmission plate 23, and improves the reciprocating oscillation speed, thus reducing jamming or whisker clamping problems caused by the low speed of the cutter head assembly 30.

[0037] Of course, the straight line direction known in this embodiment can be the X-axis direction or the Y-axis direction. When applied to the housing 10, the straight line direction can be the length direction or the width direction of the housing 10.

[0038] As an optional implementation, in order to facilitate the installation of the drive assembly 20 and the housing 10, the drive assembly 20 in this embodiment includes a transmission seat 25. The transmission seat 25 is installed on the housing 10, and the coil plate 21 and the transmission plate 23 are both installed on the transmission seat 25. The transmission plate 23 can be movably engaged with the transmission seat 25 in a straight line direction, and an elastic member 26 is provided between the transmission plate 23 and the transmission seat 25.

[0039] During assembly, both the coil plate 21 and the transmission plate 23 are assembled on the transmission seat 25. After the assembly is completed, the transmission seat 25 is then assembled onto the housing 10. This allows the drive component 20 to be assembled outside the housing 10 before assembly, without needing to go inside the housing 10 for disassembly and assembly, making disassembly and assembly convenient.

[0040] Furthermore, since both the coil board 21 and the transmission board 23 are mounted on the housing 10, sufficient space can be reserved inside the housing 10 for assembling the power supply structure 12 and the control board 13 structure, allowing more parts to be configured inside the housing 10.

[0041] It should be noted that after the transmission plate 23 is assembled to the transmission seat 25, the multiple coil groups 22 on the coil plate 21 will swing in a straight line after being energized. In order to prevent the transmission plate 23 from deviating from the transmission seat 25 in a straight line and colliding with the transmission seat 25 and being damaged, an elastic member 26 can be provided between the transmission plate 23 and the transmission seat 25. The elastic member 26 can reduce the impact between the transmission plate 23 and the transmission seat 25, and the elastic member 26 can quickly reset during the reciprocating swing of the transmission plate 23.

[0042] As an optional implementation, the transmission base 25 is provided with a mounting groove, and the coil plate 21 and the transmission plate 23 are both installed in the mounting groove. The elastic member 26 is connected between the end of the transmission plate 23 and the side wall of the mounting groove. In this way, the coil plate 21 and the transmission plate 23 can be assembled into the mounting groove of the transmission base 25, and the side wall of the mounting groove restricts the movement stroke of the transmission plate 23, reducing the movement sway of the transmission plate 23 and stabilizing the movement and assembly structure.

[0043] As an optional implementation, the housing 10 may be provided with a mounting cavity 11 and a mounting port, the mounting port communicating with the mounting cavity 11, and the aforementioned transmission seat 25 is mounted on the mounting port and covers the mounting cavity 11.

[0044] A power supply structure 12 and a control board 13 are provided within the aforementioned mounting cavity 11. The terminals of the coil group 22 are inserted into the mounting cavity 11 and electrically connected to the power supply structure 12. Thus, the power supply structure 12 can be installed within the mounting cavity 11. This power supply structure 12 can be a rechargeable battery (such as a lithium battery) or a conventional battery structure. After the drive seat 25 is sealed to the mounting opening, the terminals of the coil group 22 on the coil plate 21 can be guided through the mounting opening to the mounting cavity 11 and electrically connected to the control board 13. The control board 13 can integrate the working circuitry of the coil group 22 and is electrically connected to the power supply structure 12. The control board 13 can control the energization and de-energization of multiple coil groups 22 on the coil plate 21, facilitating the start or stop of the reciprocating drive host.

[0045] Of course, based on the above-mentioned power structure 12 being a rechargeable battery (such as a lithium battery), a charging interface can also be provided on the casing 10, so that the charging interface can be electrically connected to an external charging cable to charge the rechargeable battery.

[0046] As an optional implementation, the drive assembly 20 further includes a conductive sheet 221, which is mounted on the transmission base 25. The terminals on the coil plate 21 are electrically connected to the conductive sheet 221, which extends into the mounting cavity 11 and is electrically connected to the power supply structure 12. Compared to electrically connecting the power supply structure 12 or the control board 13 with conductive wires, which may break or twist due to external forces during use, this embodiment uses a conductive sheet 221 (a copper sheet in the prior art) electrically connected to the control board 13 (by welding or screw assembly). The conductive sheet 221 has a larger electrical contact surface, making it less prone to loosening under external forces, and resulting in a more stable circuit connection structure.

[0047] As an optional implementation, the elastic component 26 includes an elastic sheet, which includes multiple interconnected elastic segments. The elastic sheet can be formed by bending an elastic metal sheet into multiple segments using a bending process in the related art. Since the elastic component 26 will be compressed and reset repeatedly by the transmission plate 23 during use, if the spring structure in the prior art is used, it is easy to experience elastic failure after a period of use. However, the elastic metal sheet used in this application has better toughness and a longer service life.

[0048] Example 2, As an optional implementation, in this embodiment, the drive assembly 20 includes two coil plates 21, which are respectively disposed above and below the transmission plate 23. Multiple coil groups 22 on the two coil plates 21 are all disposed facing the transmission plate 23, and the two coil plates 21 are spaced apart to form a transmission interval, with the transmission plate 23 located in the transmission interval.

[0049] When assembling the two coil plates 21, the side of one coil plate 21 can be bent to connect with the other coil plate 21. After connection, a transmission interval can be formed for the assembly of the transmission plate 23. The transmission plate 23 can move under the action of multiple coil groups 22 of the upper and lower coil plates 21. After being energized, the multiple coil groups 22 of the upper and lower coil plates 21 can form a magnetic field that alternates in a straight direction on both the upper and lower parts of the transmission plate 23. The magnetic field force formed in this way is stronger and the driving speed is faster.

[0050] Of course, based on the structure with the conductive sheet 221, the terminals of the coil groups 22 of the two coil plates 21 can be connected to the conductive sheet 221, which facilitates unified wiring.

[0051] As an optional implementation, the drive assembly 20 in this embodiment also includes a connecting plate 27 and a transmission rod 28. Specifically, a first positioning connection part 271 is provided on both sides of the connecting plate 27, and a second positioning connection part 231 is provided on both sides of the transmission plate 23. The second positioning connection part 231 is positioned and engaged with the first positioning connection part 271. One end of the transmission rod 28 is connected to the connecting plate 27, and the other end of the transmission rod 28 is connected to the cutter head assembly 30.

[0052] To facilitate the connection between the transmission plate 23 and the cutter head assembly 30, multiple magnets 24 are arranged on the transmission plate 23 in a straight line. If the transmission rod 28 is directly arranged on the transmission plate 23, the structure of the transmission rod 28 will easily affect the electromagnetic field of the coil plate 21 and the fixed magnetic field on the transmission plate 23. Therefore, it can be connected to the first positioning connection part 271 of the connecting plate 27 through the second positioning connection part 231 on the transmission plate 23. The second positioning connection part 231 can avoid the multiple magnets 24 in the middle position of the transmission plate 23 and is arranged on the edge of the transmission plate 23. Therefore, after connecting with the connecting plate 27, the interference of magnetic field coupling can be reduced.

[0053] In addition, the transmission rod 28 is also set on the connecting plate 27. If the coil plate 21 is set above the transmission plate 23, since the transmission rod 28 is set on the connecting plate 27, the connecting plate 27 avoids the magnetic field of the coil plate 21 and the transmission plate 23 by the first positioning connecting part 271 on both sides and the second positioning connecting part 231 of the transmission plate 23. At the same time, the transmission rod 28 does not need to pass through the coil plate 21. This facilitates the assembly of the cutter head assembly 30 and the transmission rod 28, and also reduces the influence of the assembly structure of the cutter head assembly 30 on the magnetic field coupling.

[0054] As an optional implementation, the reciprocating drive unit also includes a waterproof plate 29. The waterproof plate 29 is snapped onto the housing 10 and sealed above the drive assembly 20. Specifically, the waterproof plate 29 is provided with a guide hole 291, which can extend in a straight line. The transmission rod 28 on the connecting plate 27 can pass through the guide hole 291 and extend out of the guide hole 291. The blade assembly 30 can be connected to the end of the transmission rod 28 that extends out of the guide hole 291. When the transmission plate 23 reciprocates, it can drive the connecting plate 27 connected to the transmission plate 23 to reciprocate, thereby driving the transmission rod 28 on the connecting plate 27 to reciprocate, thus driving the blade assembly 30 to perform reciprocating shaving.

[0055] The transmission rod 28 slides with the guide hole 291, and the movement of the transmission rod 28 in the linear direction is guided by the guide hole 291. The reciprocating motion of the transmission rod 28 in the linear direction is stable, reducing the occurrence of wobble. During the reciprocating motion of the connected blade assembly 30, the shaving process is stable and will not cause scratches due to the wobble of the blade assembly 30.

[0056] More specifically, the waterproof plate 29 can be equipped with a snap-fit ​​292, corresponding to a locking block at the mounting opening of the housing 10. When the waterproof plate 29 is assembled to the housing 10, it can be engaged with the locking block via the snap-fit ​​292, facilitating the installation and removal of the waterproof plate 29. A sealing ring 293 is provided between the waterproof plate 29 and the inner wall of the mounting opening to improve the waterproof performance between the waterproof plate 29 and the housing 10. Furthermore, the waterproof plate 29 covers the top of the connecting plate 27, the coil plate 21, and the transmission plate 23, thus providing a waterproof seal for the circuit structure of the reciprocating drive host and improving the host's waterproof performance.

[0057] Example 3, See Figures 1-8 This embodiment provides a shaver, including the reciprocating drive host of Embodiment 1 and Embodiment 2 and a shaver head assembly 30. The shaver head assembly 30 includes a shaver holder 31 and a shaver mesh 32. The shaver mesh 32 is assembled on the shaver holder 31. When the shaver head assembly 30 is connected to the reciprocating drive host, the shaver holder 31 of the shaver head assembly 30 can be connected to the transmission plate 23. Specifically, the transmission rod 28 in Embodiment 2 is engaged, inserted, or threaded into the connection hole 311 of the shaver holder 31. The specific assembly structure of the shaver head assembly 30 and the reciprocating drive host is not limited here.

[0058] When the shaver is in use, after energizing the multiple coil groups 22 on the coil plate 21, the multiple coil groups 22 on the coil plate 21 generate a magnetic field. At the moment of energization and after energization, adjacent coil groups 22 can generate magnetic fields with opposite and alternating magnetic poles. For example, the magnetic poles of the multiple coil groups 22 in the straight direction are arranged as NSNS... etc. Correspondingly, the magnetic poles of the multiple magnets 24 on the transmission plate 23 are also arranged in the straight direction as NSNS... etc. In this way, the change of current on the coil plate 21 can generate a continuous and alternating magnetic field, dynamically creating an array of "electromagnetic poles" of NSNS..., which couples with the fixed NSNS... of the multiple permanent magnets 24 on the transmission plate 23 to generate thrust. This drives the transmission plate 23 to swing back and forth in the straight direction, thereby driving the shaver head assembly 30 connected to the transmission plate 23 to swing back and forth, realizing the reciprocating shaving.

[0059] That is, in this embodiment, the reciprocating oscillation of the head assembly 30 is achieved by energizing multiple coil groups 22 on the coil plate 21 and coupling them with multiple magnets 24 on the transmission plate 23, thereby realizing shaving. The coil groups 22 do not vibrate when energized, so only the reciprocating motion of the head assembly 30 has a certain vibration during the shaving process. Compared with the linear motor or rotor motor used in the prior art, this reduces the vibration noise of the drive structure itself, making the shaver quieter when it is working.

[0060] Furthermore, since the drive assembly 20 is formed by the coil plate 21 with multiple coil groups 22 and the transmission plate 23 with multiple magnets 24 arranged opposite to each other, the height of the drive part of the drive assembly 20 is the superimposed height of the two plates. Compared with the rotor motor or linear motor in the prior art, it has a smaller assembly thickness. Thus, without changing the structure of the original blade assembly 30, the thickness of the housing 10 applied to the shaver can be significantly reduced, thereby reducing the overall size of the shaver.

[0061] It should also be emphasized that if a rotor motor or linear motor in the prior art is used to output the motor shaft and cooperate with the transmission structure to perform mechanical work, not only will a lot of noise be generated, but the mechanical structure will also fatigue and heat up. However, the drive component 20 of this application performs work by magnetic coupling between the electromagnetic field and the fixed magnet 24 of the transmission plate 23, reducing the mechanical transmission structure. Therefore, the heat generated during driving is smaller, and the requirements for the heat dissipation structure of the host are lower.

[0062] More specifically, by replacing the traditional mechanical transmission structure with magnetic coupling, the drive can be realized immediately as soon as the current is supplied to the coil group 22, reducing the transmission time caused by the mechanical transmission structure. This reduces power delay, increases the start-up time of the cutter head assembly 30 connected to the transmission plate 23, and improves the reciprocating oscillation speed, thus reducing jamming or whisker clamping problems caused by the low speed of the cutter head assembly 30.

[0063] Of course, the straight line direction known in this embodiment can be the X-axis direction or the Y-axis direction. When applied to the housing 10, the straight line direction can be the length direction or the width direction of the housing 10.

[0064] The structural principles and effects of the other structures of the reciprocating drive host in this embodiment on the shaver are the same as those in Embodiments 1 and 2, and will not be described in detail here.

[0065] 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. A reciprocating drive unit for a shaver, characterized in that, include, chassis; A drive assembly includes a coil plate, multiple coil groups, a transmission plate, and a magnet group. The coil plate is mounted on the housing. The multiple coil groups are disposed on the coil plate and can be arranged in a straight line. The magnet group includes multiple magnets, which are mounted on the transmission plate and distributed in the straight line. The coil groups generate a magnetic field when energized and magnetically couple with the magnets to drive the transmission plate to reciprocate in the straight line. The transmission plate is connected to the cutter head assembly.

2. The reciprocating drive unit of the shaver according to claim 1, characterized in that, The drive assembly includes a transmission base mounted on the housing. The coil plate and the transmission plate are both mounted on the transmission base. The transmission plate can be movably engaged with the transmission base along the straight direction. An elastic member is provided between the transmission plate and the transmission base.

3. The reciprocating drive unit of the shaver according to claim 2, characterized in that, The transmission base is provided with a mounting groove, and the coil plate and the transmission plate are both mounted in the mounting groove. The elastic component is connected between the end of the transmission plate and the side wall of the mounting groove.

4. The reciprocating drive unit of the shaver according to claim 3, characterized in that, The housing is provided with a mounting cavity and a mounting port, the mounting port communicating with the mounting cavity; the transmission seat is mounted on the mounting port and covers the mounting cavity; The mounting cavity is equipped with a power supply structure and a control board. The wiring terminals of the coil group extend into the mounting cavity and are electrically connected to the power supply structure and the control board.

5. The reciprocating drive unit of the shaver according to claim 4, characterized in that, The drive assembly further includes a conductive sheet, which is mounted on the transmission base. The terminals on the coil board are electrically connected to the conductive sheet, and the conductive sheet extends into the mounting cavity and is electrically connected to the power supply structure.

6. The reciprocating drive unit of the shaver according to claim 3, characterized in that, The elastic component includes an elastic sheet, which comprises multiple interconnected elastic segments.

7. The reciprocating drive unit of the shaver according to any one of claims 1-6, characterized in that, The drive assembly includes two coil plates, which are respectively disposed above and below the transmission plate and are spaced apart to form a transmission interval; the transmission plate is located in the transmission interval.

8. The reciprocating drive unit of the shaver according to any one of claims 1-6, characterized in that, The drive assembly further includes a connecting plate and a transmission rod. The connecting plate has a first positioning connection part on both sides, and the transmission plate has a second positioning connection part on both sides. The second positioning connection part is positioned and engaged with the first positioning connection part. One end of the transmission rod is connected to the connecting plate, and the other end of the transmission rod is connected to the cutter head assembly.

9. The reciprocating drive unit of the shaver according to claim 8, characterized in that, The reciprocating drive host also includes a waterproof plate, which is snapped onto the housing and sealed over the drive assembly; The waterproof membrane is provided with a guide hole extending along the straight line direction, the transmission rod passes through the guide hole and extends out of the guide hole, and the transmission rod is slidably engaged with the guide hole.

10. A razor, characterized in that, include, The reciprocating drive host according to any one of claims 1-8; A cutter head assembly, comprising a cutter holder and a cutter mesh, the cutter mesh being mounted on the cutter holder; the cutter holder being connected to the transmission plate.

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