An ultrasonic cutting head assembly and electric shaver

Abstract

The utility model discloses an ultrasonic wave tool bit assembly and electric shaver, including tool bit, including the tool rest and blade structure, and blade structure installs in the tool rest, transmission assembly, transmission assembly includes transmission rod and ultrasonic wave generator, and transmission rod includes first transmission end and second transmission end, and first transmission end is connected in the tool rest, and ultrasonic wave generator installs in the second transmission end, and ultrasonic wave generator is used to produce ultrasonic wave transmission to transmission rod. An electric shaver, including the casing, the casing is provided with the installation cavity, the ultrasonic wave tool bit assembly is connected in the casing, and the drive assembly is installed in the installation cavity and is used to drive transmission rod reciprocating motion along the linear motion to drive the tool rest reciprocating motion. The utility model can produce ultrasonic wave transmission to transmission rod through ultrasonic wave generator, to make transmission rod produce ultrasonic mechanical vibration, to make the tool bit of being connected with transmission rod produce the cutting power of quick.

Description

Technical Field

[0001] This utility model relates to the field of shaver technology, and in particular to an ultrasonic shaver head assembly and an electric 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 drive used to move the shaving head assembly in reciprocating motion is mainly a linear motor. The shaving speed of the shaving head assembly mainly depends on the speed of the motor. Traditional motors or reciprocating motors generally have low speeds, which has the disadvantage of pulling on beards and hairs.

[0004] When a fast reciprocating shaving speed is required, the motor speed needs to be increased. At high speeds, the motor is prone to overheating and consumes a lot of power. Utility Model Content

[0005] In order to overcome at least one of the defects described in the prior art, the present invention provides an ultrasonic blade head assembly and an electric shaver, which can generate ultrasonic waves through an ultrasonic generator and transmit them to a transmission rod, so that the transmission rod generates ultrasonic mechanical vibration, thereby generating rapid cutting power for the blade head connected to the transmission rod.

[0006] The technical solution adopted by this utility model to solve its problem is: An ultrasonic scalpel head assembly includes, A cutting head, comprising a cutting head holder and a cutting blade structure, wherein the cutting blade structure is mounted on the cutting head holder; A transmission assembly includes a transmission rod and an ultrasonic generator. The transmission rod includes a first transmission end and a second transmission end. The first transmission end is connected to the tool holder, and the ultrasonic generator is installed on the second transmission end. The ultrasonic generator is used to generate ultrasonic waves that are transmitted to the transmission rod.

[0007] As an optional implementation, the ultrasonic generator includes a circuit board, a first piezoelectric ceramic sheet, a second piezoelectric ceramic sheet, and an insulating sheet, wherein the insulating sheet is disposed between the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet; the first piezoelectric ceramic sheet is connected to the circuit board via a positive lead; and the second piezoelectric ceramic sheet is connected to the circuit board via a negative lead.

[0008] As an optional implementation, the ultrasonic generator further includes a first fixing plate and a second fixing plate, with the top end of the first fixing plate connected to the second transmission end; the first piezoelectric ceramic plate, the insulating plate, and the second piezoelectric ceramic plate are sequentially installed at the bottom end of the first fixing plate; and the second piezoelectric ceramic plate is installed at the top end of the second fixing plate.

[0009] As an optional implementation, the ultrasonic blade assembly further includes a blade holder, which includes two supports and two support rods. The two supports are connected to both ends of the blade holder; the two support rods are connected between the two supports, and the two sides of the blade structure are connected to the two support rods.

[0010] As an optional implementation, the blade structure includes an outer blade net and an inner blade net, with the two sides of the outer blade net respectively connected to the outer sides of the two support rods; the two sides of the inner blade net are respectively connected to the blade holder; and the top of the inner blade net extends between the two support rods and is located below the outer blade net.

[0011] As an optional implementation, the bottom end of the tool holder is provided with a first locking groove and a first locking block, the first locking block being disposed in the middle of the first locking groove; the first transmission end is provided with a second locking block and a second locking groove, the second locking groove being disposed in the middle of the second locking block; the second locking block is engaged with the first locking groove, so that the first locking block is engaged in the second locking groove.

[0012] An electric shaver, comprising, A housing, wherein the housing is provided with a mounting cavity; The ultrasonic cutter head assembly is connected to the housing. The drive assembly, which is installed in the mounting cavity, is used to drive the transmission rod to reciprocate along a linear motion, thereby driving the tool holder to reciprocate.

[0013] As an optional implementation, the drive assembly includes a transmission base, a coil plate, multiple coil groups, a transmission plate, a magnet group, and an elastic component. The transmission base is mounted on the housing, and both the coil plate and the transmission plate are mounted on the transmission base. The transmission plate can movably engage with the transmission base along the straight line direction, and an elastic component is provided between the transmission plate and the transmission base. 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 are used to 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 rod is connected to the transmission plate. The ultrasonic cutter head assembly also includes a positioning plate, the second transmission end is connected to the positioning plate, and the ultrasonic generator is mounted on the positioning plate; the end of the positioning plate is connected to the end of the transmission plate through a connecting structure.

[0014] As an optional implementation, the driving assembly includes a driving frame, a mounting base, a winding assembly, a fixed magnet, and an elastic sheet. The driving frame is mounted in the mounting cavity, and the fixed magnet is mounted inside the driving frame. The mounting base is mounted on the driving frame and can move along the linear direction. The winding assembly is mounted on the mounting base and magnetically coupled to the fixed magnet when energized to drive the mounting base to move. The elastic sheet is disposed between the mounting base and the driving frame. The second transmission end is connected to the mounting base.

[0015] As an optional implementation, the opening of the mounting cavity is covered with a waterproof plate, and the outer peripheral wall of the waterproof plate and the inner wall of the opening of the mounting cavity are provided with a sealing structure; a transmission hole is provided on the waterproof plate, and the transmission hole extends along the straight line direction; the transmission rod can slide through the transmission hole.

[0016] In summary, this utility model has the following technical effects: An ultrasonic generator located at the second transmission end of the transmission rod can generate ultrasonic waves. After the ultrasonic waves are transmitted to the transmission rod, they can be converted into ultrasonic mechanical vibrations of the same frequency, thereby generating rapid cutting power. In this way, the cutting speed of the blade structure is the superposition of the driving speed of the drive component and the mechanical vibration speed of the ultrasonic waves, realizing the high movement of the blade structure and the faster cutting speed. Therefore, the shaving speed is faster and the pain caused by low shaving speed can be reduced. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is an exploded structural diagram of the ultrasonic cutter head assembly of this utility model. Figure 2 This is a schematic diagram of the structure of the ultrasonic generator of this utility model; Figure 3 This is an exploded view of the cutter head and transmission rod of this utility model; Figure 4 This is a schematic diagram of the cutter head of this utility model; Figure 5 This is a schematic diagram of the structure of the electric shaver of this utility model; Figure 6 This is a schematic diagram of the electric shaver of this utility model from another perspective. Figure 7 This is a schematic diagram of the drive assembly of the electric shaver of this utility model; Figure 8 This is a schematic diagram of another drive component structure for the electric shaver of this utility model; Figure 9 This is a schematic diagram of another drive component of the electric shaver of this utility model; Figure 10 This is a schematic diagram of another drive component of the electric shaver of this utility model.

[0019] The meanings of the reference numerals in the attached drawings are as follows: 10, cutter head; 11, cutter holder; 111, first locking groove; 112, first locking block; 12, inner cutter head; 13, outer cutter head; 14, cutter holder; 141, support; 142, support rod; 15, first magnet; 20, transmission assembly; 21, transmission rod; 211, first transmission end; 212, second transmission end; 213, second locking block; 214, second locking groove; 22, ultrasonic generator; 221, first piezoelectric ceramic sheet; 222, second piezoelectric ceramic sheet; 223, insulating sheet; 224, first fixing... 225. Second fixing plate; 226. Positive lead; 227. Negative lead; 228. Positioning plate; 30. Housing; 31. Mounting cavity; 32. Waterproof plate; 321. Transmission hole; 321. Waterproof ring; 323. Waterproof sleeve; 33. Control board; 34. Power supply; 35. Second magnet; 40. Drive assembly; 41. Transmission seat; 411. Transmission groove; 42. Transmission plate; 421. Magnet assembly; 422. Elastic component; 43. Coil plate; 431. Coil assembly; 44. Drive frame; 45. Mounting seat; 46. Winding assembly; 47. Elastic plate. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0026] Example 1, See Figures 1-4 This utility model discloses an ultrasonic shaving head assembly, including a shaving head 10 and a transmission assembly 20. The shaving head 10 includes a shaving base 11 and a blade structure. The blade structure is installed on the shaving base 11 and the shaving action is performed through multiple blade structure holes on the blade structure.

[0027] In addition, the aforementioned transmission assembly 20 includes a transmission rod 21 and an ultrasonic generator 22. The transmission rod 21 includes a first transmission end 211 and a second transmission end 212. The first transmission end 211 is connected to the tool holder 11, and the ultrasonic generator 22 is installed on the second transmission end 212. The ultrasonic generator 22 can generate ultrasonic waves after being powered on and transmit them to the transmission rod 21.

[0028] Based on the above structure, when using the ultrasonic blade assembly of this utility model, the ultrasonic blade assembly can be used in shavers, hair removers, or household blenders, baby food processors, etc. During use, the blade holder 11 is connected to the main unit structure, and the transmission rod 21 connected to the blade holder 11 is connected to the drive assembly 40 of the main unit. The drive assembly 40 drives the transmission rod 21 of the blade holder 11 to rotate or reciprocate in a linear direction. Simultaneously, the ultrasonic generator 22, located at the second transmission end 212 of the transmission rod 21, generates ultrasonic waves. After the ultrasonic waves are transmitted to the transmission rod 21, they are converted into ultrasonic mechanical vibrations of the same frequency, thereby generating rapid cutting power. Since the driving force of the drive assembly 40 itself also allows the transmission rod 21 to have a certain speed, the cutting speed of the blade structure is the sum of the driving speed of the drive assembly 40 and the mechanical vibration speed of the ultrasonic waves, achieving high-speed movement of the blade structure and a faster cutting speed.

[0029] Specifically, taking the application of this ultrasonic blade assembly to an electric shaver as an example, the first transmission end 211 of the transmission rod 21 of the transmission assembly 20 is connected to the blade holder 11, and the second transmission end 212 of the transmission rod 21 is connected to the housing 30 of the shaver and connected to the drive assembly 40 inside the housing 30. When the drive assembly 40 is activated, it can drive the transmission rod 21 to reciprocate in a linear direction, thereby driving the blade holder 11 connected to the transmission rod 21 to reciprocate. In this way, the blade structure installed on the blade holder 11 can realize the shaving action during the reciprocating motion.

[0030] The ultrasonic generator 22, located at the second transmission end 212 of the transmission rod 21, can generate ultrasonic waves. After the ultrasonic waves are transmitted to the transmission rod 21, they can be converted into ultrasonic mechanical vibrations of the same frequency, thereby generating rapid cutting power. In this way, the cutting speed of the blade structure is the superposition of the driving speed of the drive component 40 and the mechanical vibration speed of the ultrasonic waves, realizing the high movement of the blade structure, the cutting speed is faster, and thus the shaving speed is faster, and the shaving pain caused by the low shaving speed can be reduced.

[0031] As an optional implementation, the ultrasonic generator 22 in this embodiment includes a circuit board, a first piezoelectric ceramic sheet 221, a second piezoelectric ceramic sheet 222, and an insulating sheet 223. The insulating sheet 223 is disposed between the first piezoelectric ceramic sheet 221 and the second piezoelectric ceramic sheet 222. The first piezoelectric ceramic sheet 221 is connected to the circuit board through a positive lead 226, and the second piezoelectric ceramic sheet 222 is connected to the circuit board through a negative lead 227.

[0032] When in use, when the circuit board is powered on and an electric field is applied to the first piezoelectric ceramic sheet 221 and the second piezoelectric ceramic sheet 222, the first piezoelectric ceramic sheet 221 and the second piezoelectric ceramic sheet 222 generate mechanical vibration under the action of the electric field, thereby converting electrical energy into mechanical energy, that is, ultrasonic waves, which are then transmitted to the transmission rod 21, so that the transmission rod 21 can be superimposed with ultrasonic vibrations, thereby driving the blade structure to cut at high speed.

[0033] The first piezoelectric ceramic sheet 221 and the second piezoelectric ceramic sheet 222 are separated by an insulating sheet 223 to prevent short circuit between the two piezoelectric ceramic sheets.

[0034] When this ultrasonic blade assembly is used in appliances such as shavers and hair removers, the circuit board of the ultrasonic generator can be placed inside the machine body and integrated into the control board inside the machine body for convenient control.

[0035] As an optional implementation, in order to facilitate the connection and installation of the ultrasonic generator 22 with the transmission rod 21 and the drive assembly 40, the ultrasonic generator 22 in this embodiment further includes a first fixing plate 224 and a second fixing plate 225. The top end of the first fixing plate 224 is connected to the second transmission end 212. The first piezoelectric ceramic plate 221, the insulating plate 223 and the second piezoelectric ceramic plate 222 are sequentially installed at the bottom end of the first fixing plate 224, and the second piezoelectric ceramic plate 222 is installed at the top end of the second fixing plate 225.

[0036] Thus, the first fixing plate 224 of the ultrasonic generator 22 can be bonded to the end face of the first piezoelectric ceramic plate 221. The first piezoelectric ceramic plate 221, the insulating plate 223, and the second piezoelectric ceramic plate 222 can all be connected by adhesive bonding. The assembly of the ultrasonic generator 22 is completed by bonding the second piezoelectric ceramic plate 222 to the second fixing plate 225. In this way, the ultrasonic generator 22 can be assembled to the transmission rod 21 and the drive assembly 40 respectively through the first fixing plate 224 and the second fixing plate 225. The circuit structure between the first fixing plate 224 and the second fixing plate 225 is not affected during the installation of the ultrasonic generator 22.

[0037] As an optional implementation, the ultrasonic scalpel head assembly in this embodiment further includes a scalpel holder 14, which includes two supports 141 and two support rods 142. The two supports 141 are connected to both ends of the scalpel holder 11. The two support rods 142 are connected between the two supports 141, and the two sides of the blade structure are connected to the two support rods 142. When assembling the scalpel head 10 structure, the blade structure is assembled based on the support rods 142 of the two supports 141. A certain gap is formed between the two supports 141 and the two support rods 142, reserving space for the hair after shaving to enter after the blade structure is assembled, thereby reducing the jamming during the shaving process.

[0038] As an optional implementation, the blade structure includes an outer blade net 13 and an inner blade net 12. The two sides of the outer blade net 13 are respectively connected to the outside of two support rods 142, while the two sides of the inner blade net 12 are respectively connected to the blade holder 11. The top of the inner blade net 12 extends between the two support rods 142 and is located below the outer blade net 13. Both the outer blade net 13 and the inner blade net 12 are provided with blade net holes. During the shaving action, the two blade nets come into contact with the face. The outer net guides hair, beard, etc. into the inner blade net 12 for cutting. The shaving action is achieved by the two blade nets, which can more thoroughly remove beard, reduce the beard residue rate, and also reduce skin irritation.

[0039] As an optional implementation, the bottom end of the tool holder 11 is provided with a first locking groove 111 and a first locking block 112. The first locking block 112 is set in the middle of the first locking groove 111. Correspondingly, a second locking block 213 and a second locking groove 214 are provided at the first transmission end 211. When assembling the transmission rod 21 and the tool head 10, the second locking block 213 of the first transmission end 211 of the transmission rod 21 can be locked into the first locking groove 111, and the first locking block 112 can be locked into the second locking groove 214. That is, the transmission rod 21 and the tool holder 11 are connected by mutually fitting locking blocks and locking grooves, and the assembly structure is stable.

[0040] Example 2, See Figures 1-10 This embodiment provides an electric shaver, including a housing 30, an ultrasonic shaver head assembly, and a drive assembly 40. A mounting cavity 31 is provided in the housing 30. The ultrasonic shaver head assembly and the drive assembly 40 are both mounted in the housing 30, and the drive assembly 40 is mounted in the mounting cavity 31. The transmission rod 21 of the ultrasonic shaver head assembly can extend into the mounting cavity 31 and connect with the drive assembly 40. The drive assembly 40 can drive the transmission rod 21 to reciprocate in a linear motion to drive the shaver holder 11 to reciprocate.

[0041] The blade structure mounted on the blade holder 11 can perform shaving actions during reciprocating motion. The ultrasonic generator 22 located at the second transmission end 212 of the transmission rod 21 can generate ultrasonic waves. After the ultrasonic waves are transmitted to the transmission rod 21, they can be converted into ultrasonic mechanical vibrations of the same frequency, thereby generating rapid cutting power. In this way, the cutting speed of the blade structure is the superposition of the driving speed of the drive component 40 and the mechanical vibration speed of the ultrasonic waves, achieving high-speed movement of the blade structure and faster cutting speed. Therefore, the shaving speed is faster, and the pain caused by low shaving speed can be reduced.

[0042] In this embodiment, the straight line direction can be the X-axis direction or the Y-axis direction. When applied to the housing 30, the length direction or width direction of the housing 30 can be the straight line direction.

[0043] Example 3, As an optional implementation, based on Example 2, see [link to example]. Figure 5 , Figure 6 as well as Figure 7 The drive assembly 40 in this embodiment includes a transmission base 41, a coil plate 43, multiple coil groups 431, a transmission plate 42, a magnet group 421, and an elastic member 422. The transmission base 41 is mounted on the housing 30, and the coil plate 43 and the transmission plate 42 are both mounted on the transmission base 41. The transmission plate 42 can move and cooperate with the transmission base 41 in a straight line direction. An elastic member 422 is provided between the transmission plate 42 and the transmission base 41.

[0044] The aforementioned multiple coil groups 431 are disposed on the coil plate 43 and can be arranged in a straight line. The magnet group 421 includes multiple magnets, which are mounted on the transmission plate 42 and distributed in a straight line. The coil group 431 is used to generate a magnetic field when energized and magnetically couple with the magnets to drive the transmission plate 42 to reciprocate in a straight line. The transmission rod 21 is connected to the transmission plate 42. During assembly, both the coil plate 43 and the transmission plate 42 are assembled on the transmission seat 41. After the assembly is completed, the transmission seat 41 is then assembled onto the housing 30. This allows the drive component 40 to be assembled outside the housing 30 before assembly, without needing to go inside the housing 30 for disassembly and assembly, making disassembly and assembly convenient.

[0045] The coil assembly 431 on the coil plate 43 is mounted on the housing 30 and its terminals are connected to the power supply 34. After power is applied, the multiple coil assemblies 431 on the coil plate 43 generate a magnetic field. At the moment of power-on and after power-on, adjacent coil assemblies 431 can generate magnetic fields with opposite and alternating magnetic poles. For example, the magnetic poles of multiple coil assemblies 431 in the linear direction are arranged as NSNS... etc. Correspondingly, the magnetic poles of multiple magnets on the transmission plate 42 are also arranged in the linear direction as NSNS... etc., which alternately. In this way, the change of current on the coil plate 43 can generate a continuous and alternating magnetic field, dynamically creating an array of "electromagnetic poles" of NSNS..., which couples with the fixed NSNS... of multiple permanent magnets on the transmission plate 42 to generate thrust. This drives the transmission plate 42 to swing back and forth in the linear direction, thereby driving the shaving head assembly connected to the transmission plate 42 to swing back and forth, realizing reciprocating shaving.

[0046] By replacing the traditional mechanical transmission structure with magnetic coupling, driving can be achieved immediately upon the introduction of current into the coil group 431, 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 42, and increases the reciprocating oscillation speed, thus reducing jamming or blade clamping problems caused by the low speed of the cutter head assembly. Furthermore, the driving speed of the drive assembly 40 is faster than that of the transmission drive structure due to magnetic coupling. Combined with the mechanical vibration of ultrasonic waves, the speed transmitted to the cutter head assembly is even faster, resulting in a faster cutting speed for the blade structure.

[0047] 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 the multiple coil groups 431 on the coil plate 43 can be changed by the change of current, and the magnetic poles of the multiple magnets on the transmission plate 42 can be selected and arranged according to actual needs.

[0048] It should be noted that a transmission groove 411 can be provided on the transmission base 41, and the transmission plate 42 and the coil plate 43 can be installed in the transmission groove 411. Since the multiple coil groups 431 on the coil plate 43 will swing in a straight line after the transmission plate 42 is assembled to the transmission base 41, in order to prevent the transmission plate 42 from deviating from the transmission base 41 in a straight line and colliding with the transmission base 41 and being damaged, an elastic member 422 can be provided between the transmission plate 42 and the transmission groove 411 of the transmission base 41. The elastic member 422 can reduce the impact between the transmission plate 42 and the transmission base 41, and the elastic member 422 can quickly reset during the reciprocating swing of the transmission plate 42.

[0049] In addition, the ultrasonic cutter head assembly also includes a positioning plate 228, a second transmission end 212 connected to the positioning plate 228, and an ultrasonic generator 22 mounted on the positioning plate 228; the end of the positioning plate 228 is connected to the end of the transmission plate 42 through a connecting structure.

[0050] Specifically, based on the structure of this drive assembly 40, when connecting the transmission rod 21 and the transmission plate 42, a positioning plate 228 can be set on the second transmission end 212 of the transmission rod 21. The ultrasonic generator 22 is mounted on the positioning plate 228, and the second transmission end 212 of the transmission rod 21 is connected to the ultrasonic generator 22. In this way, the cutter head assembly can be connected to the positioning plate 228 through the transmission rod 21. Positioning holes can be set on both sides of the positioning plate 228, and positioning posts can be set on both sides of the transmission plate 42. The positioning posts are connected to the positioning holes. In this way, the connection between the transmission rod 21 and the ultrasonic generator 22 is based on the positioning plate 228. Thus, the ultrasonic vibration of the ultrasonic generator 22 is concentrated on the positioning plate 228, rather than the transmission plate 42, which can reduce the impact of vibration on the magnetic field on the transmission plate 42. At the same time, the connection structure of the ultrasonic generator 22 and the transmission rod 21 can also avoid the magnet group 421 on the transmission plate 42, so that the arrangement of the magnet group 421 on the transmission plate 42 is not affected.

[0051] Example 4, Unlike Example 3, see [link to example]. Figure 8 , Figure 9 as well as Figure 10 The drive assembly 40 in this embodiment includes a drive frame 44, a mounting base 45, a winding assembly 46, a fixed magnet, and an elastic sheet 47. The drive frame 44 is installed in the mounting cavity 31, the fixed magnet is installed inside the drive frame 44, the mounting base 45 is installed on the drive frame 44, and the mounting base 45 can move in a straight line. The winding assembly 46 is installed on the mounting base 45, and the winding assembly 46 is magnetically coupled with the fixed magnet when energized to drive the mounting base 45 to move. An elastic sheet 47 is provided between the mounting base 45 and the drive frame 44. The second transmission end 212 is connected to the mounting base 45.

[0052] Based on this structure, the transmission rod 21 of the ultrasonic blade assembly can be connected to the mounting base 45 of the drive assembly 40. The second transmission end 212 of the transmission rod 21 and the ultrasonic generator 22 can be installed on the mounting base 45 of the drive assembly 40. After the winding group 46 is energized, the winding group 46 can generate an electromagnetic field.

[0053] When a fixed magnet is provided in the drive frame 44, the magnetic poles of the electromagnetic field generated by the winding assembly 46 are the same as or opposite to the magnetic poles of the fixed magnetic field on the drive frame 44. They can alternately magnetically couple with the fixed magnet when the current changes. In this way, the winding assembly 46 can swing back and forth under the action of the magnetic field, thereby driving the mounting base 45 connected to it to swing back and forth. Thus, the transmission rod 21 connected to the mounting base 45 can drive the blade head 10 to swing back and forth, realizing the shaving action.

[0054] Of course, based on the structure of this drive assembly 40, the second transmission end 212 of the aforementioned transmission rod 21 and the ultrasonic generator 22 are both connected to the top of the mounting base 45.

[0055] Example 5, Based on the structure of any of the above embodiments, in this embodiment, a waterproof plate 32 can be used to seal the opening of the mounting cavity 31, and a sealing structure is provided between the outer peripheral wall of the waterproof plate 32 and the inner wall of the opening of the mounting cavity 31. The sealing structure can be a sealing ring (such as a rubber ring or silicone ring) in related technologies. A transmission hole 321 is provided on the waterproof plate 32, and the transmission hole 321 extends in a straight line direction; the transmission rod 21 can slide through the transmission hole 321.

[0056] During assembly, after the drive assembly 40 is assembled into the mounting cavity 31 of the housing 30, the waterproof plate 32 is snapped onto the housing 30 and the opening of the mounting cavity 31 is sealed. Specifically, the waterproof plate 32 is provided with a transmission hole 321, which can extend in a straight line. The transmission rod 21 of the blade assembly can pass through the transmission hole 321 and connect to the drive assembly 40. When the transmission plate 42 reciprocates, it can drive the blade assembly to perform reciprocating shaving.

[0057] The transmission rod 21 slides with the transmission hole 321, and the transmission hole 321 guides the movement of the transmission rod 21 in the linear direction. The reciprocating motion of the transmission rod 21 in the linear direction is stable, reducing the occurrence of wobble. During the reciprocating motion, the shaving process of the connected blade assembly is stable and will not cause scratches due to the wobble of the blade assembly.

[0058] More specifically, a waterproof sleeve 323 can be fitted inside the transmission hole 321. The waterproof sleeve 323 can be an elastic rubber ring that can extend and retract during the reciprocating motion of the transmission rod 21 and can also provide waterproofing at the assembly position of the transmission rod 21 and the drive assembly 40.

[0059] Of course, based on the structure of any of the embodiments 1, 2, 3, 4 and 5, a power supply 34 (such as a rechargeable battery for easy charging and repeated use) and a control board 33 can be provided inside the housing 30. The working circuit of the ultrasonic generator 22 and the working circuit of the drive component 40 of the ultrasonic shaver head assembly are integrated into the control board 33 to facilitate the control of the electric shaver to start or stop.

[0060] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An ultrasonic scalpel head assembly, characterized in that, include, A cutting head, comprising a cutting head holder and a cutting blade structure, wherein the cutting blade structure is mounted on the cutting head holder; A transmission assembly includes a transmission rod and an ultrasonic generator. The transmission rod includes a first transmission end and a second transmission end. The first transmission end is connected to the tool holder, and the ultrasonic generator is installed on the second transmission end. The ultrasonic generator is used to generate ultrasonic waves that are transmitted to the transmission rod.

2. The ultrasonic cutter head assembly according to claim 1, characterized in that, The ultrasonic generator includes a circuit board, a first piezoelectric ceramic sheet, a second piezoelectric ceramic sheet, and an insulating sheet. The insulating sheet is disposed between the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet. The first piezoelectric ceramic sheet is connected to the circuit board via a positive lead. The second piezoelectric ceramic sheet is connected to the circuit board via a negative lead.

3. The ultrasonic cutter head assembly according to claim 2, characterized in that, The ultrasonic generator further includes a first fixing plate and a second fixing plate, the top end of the first fixing plate being connected to the second transmission end; the first piezoelectric ceramic plate, the insulating plate, and the second piezoelectric ceramic plate are sequentially installed at the bottom end of the first fixing plate; the second piezoelectric ceramic plate is installed at the top end of the second fixing plate.

4. The ultrasonic cutter head assembly according to claim 1, characterized in that, The ultrasonic blade assembly also includes a blade holder, which includes two supports and two support rods. The two supports are connected to both ends of the blade holder; the two support rods are connected between the two supports, and the two sides of the blade structure are connected to the two support rods.

5. The ultrasonic cutter head assembly according to claim 4, characterized in that, The blade structure includes an outer blade net and an inner blade net. The two sides of the outer blade net are respectively connected to the outer sides of the two support rods. The two sides of the inner blade net are respectively connected to the blade holder. The top of the inner blade net extends between the two support rods and is located below the outer blade net.

6. The ultrasonic scalpel head assembly according to claim 1, characterized in that, The bottom end of the tool holder is provided with a first locking groove and a first locking block, the first locking block being disposed in the middle of the first locking groove; the first transmission end is provided with a second locking block and a second locking groove, the second locking groove being disposed in the middle of the second locking block; the second locking block is locked into the first locking groove, so that the first locking block is locked into the second locking groove.

7. An electric shaver, characterized in that, include, A housing, wherein the housing is provided with a mounting cavity; The ultrasonic cutter head assembly according to any one of claims 1-6, wherein the ultrasonic cutter head assembly is connected to the housing; A drive assembly is installed in the mounting cavity and is used to drive the transmission rod to reciprocate along a linear motion, thereby driving the tool holder to reciprocate.

8. The electric shaver according to claim 7, characterized in that, The drive assembly includes a transmission base, a coil plate, multiple coil groups, a transmission plate, a magnet group, and an elastic component. The transmission base is mounted on the housing. The coil plate and the transmission plate are both mounted on the transmission base. The transmission plate can move and cooperate with the transmission base in a straight line. An elastic component is provided between the transmission plate and the transmission base. 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 are used to 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 rod is connected to the transmission plate. The ultrasonic cutter head assembly also includes a positioning plate, the second transmission end is connected to the positioning plate, and the ultrasonic generator is mounted on the positioning plate; the end of the positioning plate is connected to the end of the transmission plate through a connecting structure.

9. The electric shaver according to claim 7, characterized in that, The drive assembly includes a drive frame, a mounting base, a winding group, a fixed magnet, and an elastic sheet. The drive frame is installed in the mounting cavity, and the fixed magnet is installed inside the drive frame. The mounting base is mounted on the drive frame and can move in a straight line. The winding assembly is mounted on the mounting base and magnetically coupled to the fixed magnet when energized to drive the mounting base to move. The elastic sheet is provided between the mounting base and the drive frame. The second transmission end is connected to the mounting base.

10. The electric shaver according to claim 7, characterized in that, The opening of the mounting cavity is covered with a waterproof plate, and the outer peripheral wall of the waterproof plate and the inner wall of the opening of the mounting cavity are provided with a sealing structure; a transmission hole is provided on the waterproof plate, and the transmission hole extends in a straight line; the transmission rod can slide through the transmission hole.

Images