Linear high-frequency oscillator with low power consumption and electric toothbrush

Abstract

The utility model discloses a low-power-consumption linear high-frequency oscillator and an electric toothbrush, the linear high-frequency oscillator comprises a casing, the casing penetrates along the axial direction to form a mounting cavity, an opening at one end of the casing along the axial direction is covered with a baffle, and an opening at the other end of the casing is covered with an end cover; a mover module is connected in the mounting cavity in a sliding mode in the axial direction, a first through groove is formed in the mover module in the width direction of the machine shell in a penetrating mode, and magnetic steel is arranged in the first through groove; two sets of plate spring assemblies are arranged in the mounting cavity and connected to the two ends of the rotor module in the axial direction respectively. Two coil winding modules are arranged in the mounting cavity and oppositely arranged on the two sides of the mover module in the width direction of the machine shell, and when alternating current is connected, the magnetic poles of the ends, facing each other, of the two coil winding modules are opposite, and the coil winding modules are used for driving the mover module to do linear reciprocating motion in the axial direction. According to the utility model, the use feeling and the experience feeling of customers can be improved while the power utilization endurance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a low-power linear high-frequency oscillator and an electric toothbrush. Background Art

[0002] An oscillator is a transmission device that converts electrical energy directly into linear motion mechanical energy without any intermediate conversion mechanism. An oscillator that obtains strong oscillations during high-frequency linear motion is called a linear oscillator (also called a linear motor or linear motor). Linear oscillators are widely used in health care, cleaning products, massage products, electronic household appliances, etc.

[0003] Specifically, the linear oscillator is caused by the interaction between the permanent magnet and the electromagnet after power is applied. When the direction of the current changes, the magnetic poles of the electromagnet will also switch between the N pole and the S pole at any time. The changes in this interaction, when this high-frequency change occurs, will cause the motor to move back and forth left and right, thereby generating high-frequency oscillations.

[0004] The vibration structure of most existing linear oscillators usually includes a mover module and a coil winding module. When AC current passes through, the core end of the coil winding module forms an alternating magnetic pole change, so that the mover module reciprocates, thereby achieving axial reciprocating oscillation output. However, most existing linear oscillators are prone to oscillation consumption in a direction perpendicular to the axial direction when performing axial reciprocating oscillation output, resulting in unnecessary waste of power consumption, reduced battery life of the oscillator, and poor customer experience. Utility Model Content

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the defects of the linear oscillator in the prior art that it easily causes unnecessary waste of power consumption, resulting in reduced power endurance of the oscillator and poor customer experience, thereby providing a low-power linear high-frequency oscillator and electric toothbrush.

[0006] According to the first aspect of the utility model, a low-power linear high-frequency oscillator is provided, comprising:

[0007] The housing has an installation cavity formed through the housing in the axial direction, one end opening of the housing in the axial direction is covered with a baffle, and the other end opening is detachably covered with an end cover;

[0008] A mover module is slidably connected in the installation cavity along the axial direction, a first through slot is formed on the mover module along the width direction of the housing, and a magnetic steel is arranged in the first through slot;

[0009] Two groups of leaf spring assemblies are arranged in the installation cavity at intervals along the axial direction and are respectively connected to two ends of the mover module along the axial direction;

[0010] Two groups of coil winding modules are arranged in the installation cavity and are relatively arranged on both sides of the mover module along the width direction of the casing. When alternating current is passed through, the magnetic poles of the ends of the two groups of coil winding modules facing each other are opposite, and are used to drive the mover module to perform linear reciprocating motion along the axial direction.

[0011] A low-power linear high-frequency oscillator according to the utility model has at least the following technical effects:

[0012] 1. A magnetic steel is arranged in the first through slot of the movable module, and a group of coil winding modules are arranged on both sides of the movable module along the width direction of the casing; when alternating current is passed through the linear high-frequency oscillator, the end faces of the two groups of coil winding modules facing the magnetic steel alternately form N-level and S-level changes, and the magnetic poles of the end faces of the two groups of coil winding modules facing each other are opposite. At this time, according to the principle that the same poles of the magnetic field repel each other and the opposite poles attract each other, the magnetic steel and the two groups of coil winding modules will produce a phenomenon of attraction and repulsion (for example, when the same poles of two magnets approach each other, due to the mutual repulsion of the magnetic field, the two magnets with the same poles are like a force that separates them, and the two magnets with different poles will attract each other), so that the two groups of coil winding modules simultaneously apply basically the same repulsive force or attractive force to the two sides of the movable module along the width direction of the casing, thereby enhancing the magneto-electric repulsion. The force on the movable module in the width direction of the casing should be balanced to avoid the displacement of the movable module along the width direction of the casing, ensure the stability of the structure, and increase the motor impedance of the linear high-frequency oscillator in a limited space, reduce the working current of the linear high-frequency oscillator, thereby reducing the power consumption of the linear high-frequency oscillator, and thus extending the power endurance of the linear high-frequency oscillator without increasing the battery capacity; and cooperate with the deformation of the two groups of leaf spring components and the elastic restoring force to achieve axial reciprocating oscillation output while not easily generating oscillation consumption along the width direction of the casing, thereby achieving stable output of axial reciprocating oscillation while reducing the unnecessary waste of power consumption of the linear high-frequency oscillator, while improving the power endurance of products equipped with the linear high-frequency oscillator and improving customers' sense of use and experience.

[0013] 2. By embedding the magnetic steel in the first through slot to form an integral structure with the mover module, only one magnetic steel is needed to obtain the repulsive force or attractive force exerted by the two sets of coil winding modules, and the structure and production process are simpler.

[0014] 3. The openings at both ends of the casing are covered by baffles and end covers, so that the installation cavity of the casing forms a closed structure. Compared with the prior art in which the upper end of the casing is arranged in an open manner, this linear high-frequency oscillator can effectively avoid the problem of oscillator short circuit or failure caused by foreign objects falling into the installation cavity.

[0015] Preferably, the casing includes a first shell and a second shell that are separately arranged, the second shell is located at the relative upper end of the first shell along the thickness direction of the casing, the first shell and the second shell are abutted against one end surface facing each other along the thickness direction of the casing, and form the installation cavity, and the first shell and the second shell are detachably connected.

[0016] Preferably, the front end surfaces of the magnetic steel along the width direction of the housing are arranged with N magnetic pole portions and S magnetic pole portions at intervals along the axial direction, and the rear end surfaces of the magnetic steel along the width direction of the housing are arranged with S magnetic pole portions and N magnetic pole portions at intervals along the axial direction;

[0017] And / or, one end of the mover module toward the baffle extends to the outside of the leaf spring assembly and is provided with a transmission shaft, and one end of the transmission shaft away from the mover module extends to the outside of the casing and is used to connect to an external structure; an embedding groove is provided on the end surface of the transmission shaft toward the mover module, and one end of the mover module toward the transmission shaft is interference fit in the embedding groove.

[0018] Preferably, each of the coil winding modules includes an iron core connected to the installation cavity, a skeleton is sleeved on the iron core, and a coil is wound on the skeleton; the end cover is provided with a first wire terminal and a second wire terminal on both sides along the width direction of the casing, and the first wire terminal and the second wire terminal are arranged parallel to the axial direction, one end of the first wire terminal and the second wire terminal are respectively electrically connected to the wire ends at both ends of each of the coils, and the other ends of the first wire terminal and the second wire terminal are used to electrically connect to an AC power supply to form a power supply circuit.

[0019] Preferably, the housing is provided with a mounting through slot at both ends along the width direction of the housing, and the iron core is connected to the corresponding mounting through slot.

[0020] Preferably, each of the mounting slots has two axial surrounding walls that are provided with positioning portions protruding inwardly along the width direction of the housing; during assembly, the two positioning portions of the mounting slots respectively abut against two axial sides of the corresponding iron core.

[0021] Preferably, two mounting grooves are recessed on an end surface of the end cover axially away from the casing, and the two mounting grooves are symmetrically arranged on both sides of the end cover along the thickness direction of the casing, and the mounting grooves are inclined axially toward the surrounding wall of the casing, and gradually approach the casing in the direction away from the center of the casing along the thickness direction of the casing; the first shell and the second shell are each provided with an elastic locking piece at the position corresponding to the mounting groove, and the arrangement direction of the locking piece is parallel to the surrounding wall of the casing along the axial direction of the mounting groove; during assembly, an end surface of the locking piece axially facing the baffle abuts against the surrounding wall of the casing along the axial direction of the mounting groove.

[0022] Preferably, the leaf spring assembly comprises a plurality of planar scroll leaf springs, and two first flanges are arranged on the outer circumferential surface of the planar scroll leaf spring at a circumferential interval of ninety degrees, and the first flanges are welded to the casing.

[0023] Preferably, a connection groove is recessed on the inner wall of the first shell at a position corresponding to the first flange, and during assembly, the first flange is clamped in the corresponding connection groove.

[0024] According to the second aspect of the present invention, an electric toothbrush is provided, comprising the linear high-frequency oscillator provided in the first aspect.

[0025] An electric toothbrush according to the utility model has at least the following technical effects:

[0026] 1. The linear high-frequency oscillator is provided with a magnetic steel in the first through slot of the moving submodule, and a group of coil winding modules are respectively provided on both sides of the moving submodule along the width direction of the casing; when alternating current is passed through the linear high-frequency oscillator, the end faces of the two groups of coil winding modules facing the magnetic steel alternately form N-level and S-level changes, and the magnetic poles of the end faces of the two groups of coil winding modules facing each other are opposite. At this time, according to the principle that like poles of the magnetic field repel each other and unlike poles attract each other, the magnetic steel and the two groups of coil winding modules will produce a phenomenon of attraction and repulsion (for example, when the same poles of two magnets approach each other, due to the mutual repulsion of the magnetic field, the two magnets of the same pole are like a force that separates them, and the two magnets of different poles will attract each other), so that the two groups of coil winding modules simultaneously apply basic force to both sides of the moving submodule along the width direction of the casing. The same repulsive or attractive force makes the force of the movable module in the width direction of the casing balanced, avoiding the displacement of the movable module along the width direction of the casing, ensuring the stability of the structure, and increasing the motor impedance of the linear high-frequency oscillator and reducing the working current of the linear high-frequency oscillator in a limited space, thereby reducing the power consumption of the linear high-frequency oscillator, and thus extending the power endurance of the electric toothbrush without increasing the battery capacity; and cooperating with the deformation of the two groups of leaf spring assemblies and the elastic restoring force, it is not easy to generate oscillation consumption along the width direction of the casing while realizing the axial reciprocating oscillation output, thereby achieving stable output of axial reciprocating oscillation while reducing unnecessary waste of power consumption, and improving the power endurance of the electric toothbrush equipped with the electric toothbrush while improving the customer's sense of use and experience.

[0027] 2. By embedding the magnetic steel in the first through groove to form an integral structure with the mover module, only one magnetic steel is needed to obtain the repulsive force or attractive force exerted by the two sets of coil winding modules. The structure is simpler and the production process is simpler, which reduces the manufacturing cost of the electric toothbrush and improves market competitiveness.

[0028] 3. The openings at both ends of the casing are covered by baffles and end covers, so that the installation cavity of the casing forms a closed structure. Compared with the open arrangement of the upper end of the casing in the prior art, the linear high-frequency oscillator can effectively avoid the problem of oscillator short circuit or failure caused by foreign objects falling into the installation cavity, thereby ensuring the service life of the electric toothbrush.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of the decomposed structure of a low-power linear high-frequency oscillator of this embodiment;

[0032] Figure 2 It is a schematic cross-sectional structural diagram of a low-power linear high-frequency oscillator of this embodiment;

[0033] Figure 3 This is a schematic diagram of the assembly structure of two sets of leaf spring components, a mover module and a magnetic steel in a low-power linear high-frequency oscillator of this embodiment;

[0034] Figure 4 It is a structural schematic diagram of a part of the structure of a low-power linear high-frequency oscillator of this embodiment;

[0035] Figure 5 for Figure 4 Schematic diagram of the decomposition structure;

[0036] Figure 6 This is a schematic structural diagram of an end cover in a low-power linear high-frequency oscillator of this embodiment;

[0037] Figure 7 This is a schematic diagram of a cross-sectional structure of a casing in a low-power linear high-frequency oscillator of this embodiment, perpendicular to the thickness direction of the casing;

[0038] Figure 8 It is a schematic diagram of the exploded structure of a casing in a low-power linear high-frequency oscillator of this embodiment.

[0039] Fig. 9 It is a schematic diagram of the structure of a planar scroll leaf spring in a low-power linear high-frequency oscillator of this embodiment.

[0040] Description of reference numerals:

[0041] 1- housing, 11- mounting cavity, 12- baffle, 13- end cover, 131- first wire terminal, 132- second wire terminal, 133- mounting groove, 134- U-shaped notch, 14- first shell, 141- connecting groove, 15- second shell, 16- mounting through groove, 161- positioning portion, 17- locking member;

[0042] 2-moving module, 21-first through slot, 22-magnetic steel, 23-connecting platform;

[0043] 3-leaf spring assembly, 31-plane scroll leaf spring, 311-first flange, 312-mounting hole;

[0044] 4-transmission shaft, 41-mounting groove;

[0045] 51- iron core, 52- frame, 53- coil. DETAILED DESCRIPTION

[0046] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] Embodiment 1

[0051] like Figures 1 to 3The present embodiment shows a low-power linear high-frequency oscillator, which includes a housing 1, wherein the housing 1 is provided with an installation cavity 11 along the axial direction, wherein the opening at one end of the housing 1 along the axial direction is covered with a baffle 12, and the opening at the other end is removably covered with an end cover 13; a mover module 2 is slidably connected in the installation cavity 11 along the axial direction, and a first through slot 21 is formed along the width direction of the housing 1 on the mover module 2, and a magnetic steel 22 is arranged in the first through slot 21; two groups of leaf spring assemblies 3 are arranged in the installation cavity 11 along the axial direction, and the two groups of leaf spring assemblies 3 are respectively connected to the two ends of the mover module 2 along the axial direction; two groups of coil winding modules are arranged in the installation cavity 11, and the two groups of coil winding modules are arranged on both sides of the mover module 2 along the width direction of the housing 1. When alternating current is applied, the magnetic poles of the ends of the two groups of coil winding modules facing each other are opposite, and are used to drive the mover module 2 to perform linear reciprocating motion along the axial direction. It can be understood that the axial direction in this embodiment refers to Figure 1 The axial direction of the housing 1 in this embodiment refers to the width direction of the housing 1. Figure 1 The first direction in .

[0052] The low-power linear high-frequency oscillator of this embodiment is provided with a magnetic steel 22 in the first through slot 21 of the mover module 2, and a group of coil winding modules are respectively provided on both sides of the mover module 2 along the width direction of the housing 1; when alternating current is passed through the linear high-frequency oscillator of this embodiment, the end faces of the two groups of coil winding modules facing the magnetic steel 22 alternately form N-level and S-level changes, and the magnetic poles of the end faces of the two groups of coil winding modules facing each other are opposite, and the magnetic poles of the two ends of the magnetic steel 22 along the width direction of the housing 1 are opposite, At the same time, according to the principle that the same poles of the magnetic field repel each other and the opposite poles attract each other, the magnet 22 and the two sets of coil winding modules will produce a phenomenon of attraction and repulsion (for example, when the same poles of two magnets are close to each other, due to the mutual repulsion of the magnetic field, the two magnets of the same pole are like a force that separates them, and the two magnets of opposite poles will attract each other), so that the two sets of coil winding modules simultaneously apply basically the same repulsive force or attractive force to both sides of the mover module 2 along the width direction of the housing 1, so that the mover module 2 is subjected to the same force in the width direction of the housing 1. Balance, avoid the displacement of the mover module 2 along the width direction of the casing 1, ensure the stability of the structure, and at the same time, increase the motor impedance of the linear high-frequency oscillator of this embodiment in a limited space, reduce the working current of the linear high-frequency oscillator of this embodiment, so that the power consumption of the linear high-frequency oscillator of this embodiment is reduced, and then the linear high-frequency oscillator of this embodiment is extended without increasing the battery capacity; and cooperate with the deformation of the two groups of leaf spring assemblies 3 and the elastic restoring force to achieve axial reciprocating oscillation output while not easily generating oscillation consumption along the width direction of the casing 1, especially when providing high-frequency alternating current to generate high-frequency linear oscillation, the mover module 2 always maintains axial linear reciprocating motion, and does not generate displacement along the width direction of the casing 1; thereby achieving stable output of axial reciprocating oscillation while reducing the unnecessary waste of power consumption of the linear high-frequency oscillator of this embodiment, while improving the power endurance of the product equipped with the linear high-frequency oscillator of this embodiment and improving the customer's sense of use and experience. Furthermore, by embedding the magnetic steel 22 in the first through slot 21 to form an integral structure with the mover module 2, only one magnetic steel 22 is needed to obtain the repulsive force or attractive force exerted by the two sets of coil winding modules, and the structure and production process are simpler.

[0053] The low-power linear high-frequency oscillator of the present embodiment covers the openings at both ends of the casing 1 by means of a baffle 12 and an end cover 13, so that the installation cavity 11 of the casing 1 forms a closed structure. Compared with the prior art in which the upper end of the casing 1 is arranged in an open manner, the linear high-frequency oscillator of the present embodiment can effectively avoid the problem of short circuit or failure of the oscillator caused by foreign matter falling into the installation cavity 11; and the baffle 12 and the end cover 13 respectively located at the openings at both ends of the casing 1 along the axial direction limit the axial deformation movement range of the two sets of leaf spring assemblies 3, and the mover module 2 is driven by the two sets of coil winding modules along the During the axial linear reciprocating movement, the mover module 2 pushes the leaf spring assembly 3 to move, and the leaf spring assembly 3 acts as a buffer for the mover module 2. When the mover module 2 pushes the leaf spring assembly 3 to the position abutting the baffle 12 or the end cover 13, the baffle 12 or the end cover 13 limits the mover module 2 and the leaf spring assembly 3 from continuing to move in the same direction, preventing the mover module 2 and the leaf spring assembly 3 from deviating out of the moving range in one direction, causing elastic failure of the leaf spring assembly 3, thereby preventing the mover module 2 from failing to move in the opposite direction along the predetermined route after the current direction changes, further improving the working stability of the linear high-frequency oscillator of this embodiment.

[0054] like Figure 1 and Figure 8 As shown, optionally, the casing 1 includes a first shell 14 and a second shell 15 which are separately arranged, and the second shell 15 is located at the upper end of the first shell 14 along the thickness direction of the casing 1. The first shell 14 and the second shell 15 are abutted against each other along the thickness direction of the casing 1 at one end surface, and enclose the installation cavity 11. The first shell 14 and the second shell 15 are detachably connected. The casing 1 adopts a split arrangement, which can improve the convenience of installing the mover module 2, the leaf spring assembly 3 and the coil winding module in the installation cavity 11, reduce the difficulty of the installation process and facilitate mass production. It can be understood that the thickness direction of the casing 1 in this embodiment refers to Figure 1 In the second direction, the axial direction, the first direction and the second direction are perpendicular to each other.

[0055] Specifically, a card slot is provided on the end surface of the first shell 14 facing the second shell 15, and a flange is provided on the end surface of the second shell 15 facing the first shell 14 at a position corresponding to the card slot, and the flange matches the card slot; the first shell 14 and the second shell 15 are combined for installation by snapping together the card slot and the flange, which makes installation operation simple, reduces the difficulty of the installation process and facilitates mass production.

[0056] Optionally, the front end surface of the magnet 22 along the width direction of the housing 1 is arranged with an N magnetic pole portion and an S magnetic pole portion at intervals along the axial direction, and the rear end surface of the magnet 22 along the width direction of the housing 1 is arranged with an S magnetic pole portion and an N magnetic pole portion at intervals along the axial direction. This arrangement allows the mover module 2 to be driven to perform linear reciprocating motion along the axial direction when AC power is supplied even if there is only one coil winding module, so that when one of the coil winding modules is damaged and cannot work, the basic function of the linear high-frequency oscillator of this embodiment can still be achieved. At the same time, the N magnetic pole portion and the S magnetic pole portion can be formed on the magnet 22 by magnetizing the magnet 22, which has a simple structure, and the processing technology is easier to implement and convenient for mass production.

[0057] Specifically, the magnetic steel 22 includes an integrally formed first magnetic steel and a second magnetic steel, wherein the relative front end of the first magnetic steel 22 along the width direction of the housing 1 is set as an N magnetic pole portion, and the relative rear end along the width direction of the housing 1 is set as an S magnetic pole portion; the relative front end of the second magnetic steel 22 along the width direction of the housing 1 is set as an S magnetic pole portion, and the relative rear end along the width direction of the housing 1 is set as an N magnetic pole portion.

[0058] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, optionally, each of the coil winding modules includes an iron core 51 connected to the installation cavity 11, a skeleton 52 is sleeved on the iron core 51, and a coil 53 is wound on the skeleton 52; the end cover 13 is provided with a first wire terminal 131 and a second wire terminal 132 on both sides along the width direction of the casing 1, and the first wire terminal 131 and the second wire terminal 132 are arranged parallel to the axial direction, and one end of the first wire terminal 131 and the second wire terminal 132 are respectively electrically connected to the wire ends of each of the two ends of the coil 53, and the other ends of the first wire terminal 131 and the second wire terminal 132 are used to electrically connect to an AC power supply to form a power supply circuit. Compared with the oscillator in the prior art, a conductive spring is set on each side of the skeleton 52, and the two ends of the coil 53 after winding are respectively fixed at one end of the conductive spring. The oscillator is powered by the conductive springs at both ends to provide it with power. In the process of mold opening and assembly welding of the conductive spring, there are problems such as easy deformation, non-parallel height difference and increased cost. In the linear high-frequency oscillator of this embodiment, the first wire terminal 131 and the second wire terminal 132 are used to replace the two conductive springs to power the two groups of coil winding modules respectively. The structure is simple and easier to assemble, and the problem of deformation of the conductive spring assembly and welding is avoided. At the same time, the manufacturing cost of the linear high-frequency oscillator of this embodiment is reduced, and the market competitiveness is improved.

[0059] Specifically, the end cover 13 is provided with a U-shaped notch 134 on both sides along the width direction of the housing 1, and the U-shaped notch 134 penetrates the end cover 13 axially and connects to the installation cavity 11, so as to facilitate passing the enameled wires at both ends of the coil 53 and respectively winding them around the first wire terminal 131 and the second wire terminal 132 on the end cover 13 to fix and connect to the power supply, which makes assembly more convenient and improves the product yield.

[0060] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, optionally, the housing 1 is provided with a mounting slot 16 at both ends along the width direction of the housing 1, and the iron core 51 is connected to the corresponding mounting slot 16. By adding the mounting slot 16, on the one hand, the sound generated by the oscillating motion of the linear high-frequency oscillator of this embodiment is better diffused to the outside through the mounting slot 16, and it is less likely to produce an echo in the housing 1, and the noise generated is more effectively reduced, further improving the user's sense of use and experience of the product equipped with the linear high-frequency oscillator of this embodiment. On the other hand, it plays a role in positioning, so that the two coil winding modules can be accurately installed in the installation cavity 11.

[0061] like Figure 2 , Figure 7 and Figure 8 As shown, optionally, each of the two surrounding walls of the installation slot 16 along the axial direction is provided with a positioning portion 161 protruding inwardly along the width direction of the housing 1; when the iron core 51 is assembled and connected in the installation cavity 11, the iron core 51 is first placed into the installation slot 16 to a set depth, and it is ensured that the two positioning portions 161 are respectively abutted against the two sides of the iron core 51 along the axial direction for positioning, so as to facilitate the accurate fixing of the iron core 51 in the housing 1 through laser welding. Specifically, the axial projection of the positioning portion 161 falls within the range of the leaf spring assembly 3, and the two positioning portions 161 respectively limit the deformation movement range of the two groups of leaf spring assemblies 3 along the axial direction, effectively avoiding the two groups of leaf spring assemblies 3 from excessive deformation movement along the axial direction, resulting in elastic failure of the two groups of leaf spring assemblies 3; thereby preventing the mover module 2 from being unable to move in the opposite direction along the predetermined route after the current direction changes, further improving the working stability of the linear high-frequency oscillator of this embodiment.

[0062] like Figure 1 and Figure 2As shown, specifically, the iron core 51 is set as an E-shaped stacked riveted iron core, and the skeleton 52 is sleeved on the middle protrusion of the E-shaped stacked riveted iron core and embedded in the two grooves of the E-shaped stacked riveted iron core. The E-shaped stacked riveted iron core increases the cross-sectional area of ​​the coil 53, improves the electromagnetic conductivity of the coil 53, and realizes the improvement of the output power of the linear high-frequency oscillator of this embodiment without adding the mover module 2 and the coil winding module, thereby saving the manufacturing cost and improving the market competitiveness.

[0063] like Figures 4 to 6 as well as Figure 8 As shown, optionally, the end surface of the end cover 13 axially away from the casing 1 is concavely provided with two mounting grooves 133, and the two mounting grooves 133 are symmetrically arranged on both sides of the end cover 13 along the thickness direction of the casing 1, and the mounting grooves 133 are inclinedly arranged axially toward the surrounding wall of the casing 1, and are gradually approached to the casing 1 in the direction away from the center of the casing 1 along the thickness direction of the casing 1; the first shell 14 and the second shell 15 are each provided with an elastic locking member 17 at a position corresponding to the mounting groove 133, and the arrangement direction of the locking member 17 is parallel to the surrounding wall of the casing 1 along the axial direction of the mounting groove 133; when the mounting groove 133 is When the end cover 13 is assembled and connected with the housing 1, the two elastic locking members 17 are first stretched and deformed outwardly in the thickness direction of the housing 1, so that the free ends of the two locking members 17 are respectively abutted against the two side surfaces of the end cover 13 in the thickness direction of the housing 1, and then the end cover 13 is pushed to move axially to abut against the housing 1. At this time, the two locking members 17 are respectively aligned with the two mounting grooves 133. Under the action of the elastic restoring force, the end surface of the locking member 17 axially facing the baffle 12 is abutted against the surrounding wall of the mounting groove 133 axially facing the housing 1, and a pressing force is applied to the end cover 13 axially toward the baffle 12 to achieve connection and fixation. The assembly is convenient and the effect of covering the opening of the mounting cavity 11 is achieved. When the end cover 13 is disassembled from the housing 1, the elastic locking member 17 is deformed and separated from the mounting groove 133 by applying external force, and the end cover 13 can be removed from the housing 1. The operation is convenient and the difficulty of repairing the internal part of the linear high-frequency oscillator of this embodiment is reduced.

[0064] Specifically, the end cover 13 and the casing 1 can also be assembled in other ways. In other embodiments, the end surface of the end cover 13 axially away from the casing 1 is concavely provided with two mounting grooves 133, and the end surface of the casing 1 facing the end cover 13 is provided with a deformable locking plate at a position corresponding to the mounting groove 133. When the end cover 13 is assembled and connected to the casing 1, after the end cover 13 is abutted against the casing 1, the locking plate is flipped inward along the thickness direction of the casing 1 and riveted into the mounting groove 133 for fixation, and the assembly operation is simple.

[0065] like Figure 1 , Figure 2 and Fig. 9 As shown, optionally, the leaf spring assembly 3 includes a plurality of plane scroll leaf springs 31, preferably five plane scroll leaf springs 31, and two first flanges 311 are arranged on the outer circumferential surface of each plane scroll leaf spring 31 at intervals of ninety degrees in the circumferential direction, and the first flange 311 is welded to the housing 1. The plane scroll leaf spring 31 can better bear the deflection force in the direction perpendicular to the axial direction, and the structure is more stable, which can not only improve the reset and positioning effect on the mover module 2, but also reduce the friction and noise generated when the mover module 2 slides, and effectively prolong the service life; at the same time, by arranging two first flanges 311 as welding convex points at intervals of ninety degrees in the circumferential direction on the outer circumferential surface of each plane scroll leaf spring 31, and setting the leaf spring assembly 3 as a thin sheet structure composed of five plane scroll leaf springs 31 in the same direction, the rebound resistance of the leaf spring assembly 3 can be effectively reduced, and the vibration sense along the axial line can be sharp, and energy consumption can be reduced. The plane scroll leaf spring 31 is positioned and welded to the housing 1 at two points, which is simple to install. At the same time, it ensures that the plane scroll leaf spring 31 has sufficient connection stability and increases the axial movement range of the plane scroll leaf spring 31 at the front of elastic failure.

[0066] In specific applications, the number of the planar scroll leaf springs 31 in the leaf spring assembly 3 can be reasonably increased or decreased according to the actual vibration frequency, vibration amplitude and other oscillation factors of the linear high-frequency oscillator. For example, in other embodiments, the leaf spring assembly 3 includes one, two, three, four or six planar scroll leaf springs 31.

[0067] like Figure 1 , Figure 3 , Figure 8 and Fig. 9 As shown, optionally, a connecting groove 141 is recessed on the inner wall of the first shell 14 corresponding to the position of the first flange 311. When the planar scroll leaf spring 31 is assembled and connected in the casing 1, positioning is performed through the position of the connecting groove 141 and the first flange 311, so that the planar scroll leaf spring 31 can be installed in the accurate position in the casing 1 for laser welding and fixation; and the contact connection area between the planar scroll leaf spring 31 and the casing 1 is increased, and the connection strength between the planar scroll leaf spring 31 and the casing 1 is increased, thereby ensuring the movement stability of the mover module 2.

[0068] like Figure 3 and Fig. 9As shown, specifically, a mounting hole 312 is formed through the middle of the plane scroll leaf spring 31 in the axial direction, and connecting platforms 23 are respectively provided at both ends of the movable module 2 in the axial direction, and the connecting platforms 23 match the mounting holes 312, and the cross-sectional area of ​​the connecting platforms 23 perpendicular to the axial direction is smaller than the cross-sectional area of ​​the movable module 2 perpendicular to the axial direction; when the movable module 2 is assembled and connected between the two groups of leaf spring assemblies 3, the two connecting platforms 23 are respectively inserted into the mounting holes 312 of the two groups of leaf spring assemblies 3 until the two groups of leaf spring assemblies 3 are respectively in contact with the two end surfaces of the movable module 2 in the axial direction to complete the assembly connection. The movable module 2 can be limited by the mounting holes 312 on the plane scroll leaf spring 31, and the movement of the movable module 2 can be guided, and the movable module 2 can be ensured to reciprocate in a straight line in the axial direction.

[0069] like Figure 1 and Figure 2 As shown, optionally, one end of the mover module 2 toward the baffle 12 extends to the outside of the leaf spring assembly 3, and is provided with a transmission shaft 4, and the end of the transmission shaft 4 away from the mover module 2 extends to the outside of the housing 1, and is used to connect to an external structure (such as a toothbrush head, a massage head, etc.); the end face of the transmission shaft 4 facing the mover module 2 is provided with an embedding groove 41, and the end of the mover module 2 facing the transmission shaft 4 is interference fit in the embedding groove 41. The drive shaft 4 and the mover module 2 are connected and assembled by interference fitting one end of the mover module 2 with the embedding groove 41, which is easy to assemble; at the same time, the friction between the mover module 2 and the embedding groove 41 with interference fit can ensure that the drive shaft 4 will not be separated from the mover module 2 during the axial reciprocating movement; but a large pulling force can be applied to the drive shaft 4 to separate the mover module 2 from the embedding groove 41, so as to separate the mover module 2 and the drive shaft 4; in particular, it is convenient to replace the drive shaft 4 with a toothbrush head and the drive shaft 4 with a massage head and connect and assemble with the mover module 2, and the use function is more abundant. Specifically, the connection platform 23 on the mover module 2 facing the drive shaft 4 is interference fit in the embedding groove 41.

[0070] It should be noted that when the transmission shaft 4 is connected to a toothbrush head, it can be used as an electric toothbrush; when the transmission shaft 4 is connected to a massage head, it can be used as a massage product.

[0071] Embodiment 2

[0072] like Figures 1 to 9 The figure shows an electric toothbrush provided in this embodiment, including the linear high-frequency oscillator described in the first embodiment.

[0073] The linear high-frequency oscillator in the electric toothbrush of the present embodiment is provided with a magnetic steel 22 in the first through groove 21 of the movable module 2, and a group of coil winding modules are respectively provided on both sides of the movable module 2 along the width direction of the casing 1; when alternating current is passed through the linear high-frequency oscillator, the end faces of the two groups of coil winding modules facing the magnetic steel 22 alternately form N-level and S-level changes, and the magnetic poles of the end faces of the two groups of coil winding modules facing each other are opposite, and the magnetic poles of the two ends of the magnetic steel 22 along the width direction of the casing 1 are opposite. At this time, according to the principle that like poles of the magnetic field repel each other and unlike poles attract each other, there will be a phenomenon of attraction and repulsion between the magnetic steel 22 and the two groups of coil winding modules (for example, when the same poles of two magnets approach each other, due to the mutual repulsion of the magnetic field, the two magnets of the same pole are like a force that separates them, and the two magnets of different poles will attract each other), so that the two groups of coil winding modules simultaneously apply basically the same repulsive force or attractive force to both sides of the movable module 2 along the width direction of the casing 1, so that The force on the mover module 2 in the width direction of the casing 1 is balanced, so that the mover module 2 is prevented from being offset in the width direction of the casing 1, ensuring the stability of the structure, and increasing the motor impedance of the linear high-frequency oscillator and reducing the working current of the linear high-frequency oscillator in a limited space, thereby reducing the power consumption of the linear high-frequency oscillator, and further extending the power endurance of the electric toothbrush of this embodiment without increasing the battery capacity; and in conjunction with the deformation of the two groups of leaf spring assemblies 3 and the effect of elastic restoring force, while achieving axial reciprocating oscillation output, it is not easy to generate oscillation consumption along the width direction of the casing 1, especially when providing high-frequency alternating current to generate high-frequency linear oscillations, the mover module 2 always maintains axial linear reciprocating motion without offset in the width direction of the casing 1; thereby achieving stable output of axial reciprocating oscillations while reducing unnecessary waste of power consumption, and improving the power endurance of the electric toothbrush equipped with this embodiment while improving the customer's sense of use and experience. By embedding the magnetic steel 22 in the first through groove 21 to form an integral structure with the mover module 2, only one magnetic steel 22 is needed to obtain the repulsive force or attractive force exerted by the two sets of coil winding modules. The structure is simpler and the production process is simpler, thereby reducing the manufacturing cost of the electric toothbrush of this embodiment and improving market competitiveness.

[0074] The linear high-frequency oscillator in the electric toothbrush of the present embodiment covers the openings at both ends of the casing 1 through the baffle 12 and the end cover 13, so that the installation cavity 11 of the casing 1 forms a closed structure. Compared with the prior art in which the upper end of the casing 1 is arranged in an open manner, the linear high-frequency oscillator of the electric toothbrush of the present embodiment can effectively avoid the problem of short circuit or failure of the oscillator caused by foreign matter falling into the installation cavity 11; and the baffle 12 and the end cover 13 respectively located at the openings at both ends of the casing 1 along the axial direction limit the axial deformation movement range of the two sets of leaf spring assemblies 3, and the mover module 2 moves along the axial straight line under the drive of the two sets of coil winding modules. During the reciprocating movement, the mover module 2 pushes the leaf spring assembly 3 to move, and the leaf spring assembly 3 acts as a buffer for the mover module 2. When the mover module 2 pushes the leaf spring assembly 3 to the position abutting the baffle 12 or the end cover 13, the baffle 12 or the end cover 13 limits the mover module 2 and the leaf spring assembly 3 from continuing to move in the same direction, preventing the mover module 2 and the leaf spring assembly 3 from deviating out of the moving range in one direction, causing elastic failure of the leaf spring assembly 3, thereby preventing the mover module 2 from being unable to move in the opposite direction along the predetermined route after the current direction changes, further improving the working stability of the linear high-frequency oscillator, thereby ensuring the service life of the electric toothbrush of this embodiment.

[0075] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A low-power linear high-frequency oscillator, characterized in that: include: The housing (1) is provided with a mounting cavity (11) extending through the housing along the axial direction; an opening at one end of the housing (1) along the axial direction is covered with a baffle (12), and an opening at the other end is covered with an end cover (13); A mover module (2) is slidably connected in the installation cavity (11) along the axial direction, a first through slot (21) is formed on the mover module (2) along the width direction of the housing (1), and a magnetic steel (22) is arranged in the first through slot (21); Two groups of leaf spring assemblies (3) are arranged in the installation cavity (11) at intervals along the axial direction and are respectively connected to two ends of the mover module (2) along the axial direction; Two groups of coil winding modules are arranged in the installation cavity (11) and are arranged relatively on both sides of the mover module (2) along the width direction of the housing (1); when alternating current is applied, the magnetic poles of the ends of the two groups of coil winding modules facing each other are opposite, and are used to drive the mover module (2) to perform linear reciprocating motion along the axial direction.

2. A low-power linear high-frequency oscillator according to claim 1, characterized in that: The casing (1) comprises a first shell (14) and a second shell (15) which are separately arranged, the second shell (15) being located at an upper end of the first shell (14) along the thickness direction of the casing (1), the first shell (14) and the second shell (15) being abutted against each other at one end face facing each other along the thickness direction of the casing (1), and enclosing the installation cavity (11), the first shell (14) and the second shell (15) being detachably connected.

3. A low-power linear high-frequency oscillator according to claim 1 or 2, characterized in that: The front end surfaces of the magnetic steel (22) along the width direction of the housing (1) are arranged with N magnetic pole portions and S magnetic pole portions at intervals along the axial direction, and the rear end surfaces of the magnetic steel (22) along the width direction of the housing (1) are arranged with S magnetic pole portions and N magnetic pole portions at intervals along the axial direction; And / or, one end of the mover module (2) facing the baffle (12) extends to the outside of the leaf spring assembly (3), and is provided with a transmission shaft (4); one end of the transmission shaft (4) facing away from the mover module (2) extends to the outside of the housing (1) and is used for connecting to an external structure; an end surface of the transmission shaft (4) facing the mover module (2) is provided with an embedding groove (41), and one end of the mover module (2) facing the transmission shaft (4) is interference-fitted in the embedding groove (41).

4. A low-power linear high-frequency oscillator according to claim 1 or 2, characterized in that: Each of the coil winding modules comprises an iron core (51) connected to the installation cavity (11), a frame (52) being sleeved on the iron core (51), and a coil (53) being wound on the frame (52); a first wire terminal (131) and a second wire terminal (132) are oppositely penetrated on both sides of the end cover (13) along the width direction of the housing (1), the first wire terminal (131) and the second wire terminal (132) are both arranged parallel to the axial direction, one end of the first wire terminal (131) and the second wire terminal (132) are respectively electrically connected to the wire ends at both ends of each of the coils (53), and the other ends of the first wire terminal (131) and the second wire terminal (132) are used to electrically connect to an alternating current power supply to form a power supply circuit.

5. A low-power linear high-frequency oscillator according to claim 4, characterized in that: The housing (1) is provided with a mounting through slot (16) at each end along the width direction of the housing (1), and the iron core (51) is connected to the corresponding mounting through slot (16).

6. A low-power linear high-frequency oscillator according to claim 5, characterized in that: Each of the mounting slots (16) has two axial surrounding walls which are provided with positioning portions (161) protruding inwardly along the width direction of the housing (1); during assembly, the two positioning portions (161) of the mounting slots (16) respectively abut against two axial sides of the corresponding iron core (51).

7. A low-power linear high-frequency oscillator according to claim 2, characterized in that: Two mounting grooves (133) are concavely arranged on one end surface of the end cover (13) which is axially away from the casing (1). The two mounting grooves (133) are symmetrically arranged on both sides of the end cover (13) along the thickness direction of the casing (1). The mounting grooves (133) are arranged obliquely toward the surrounding wall of the casing (1) along the axial direction, and are arranged gradually approaching the casing (1) in the direction away from the center of the casing (1) along the thickness direction of the casing (1). The first shell (14) and the second shell (15) are each provided with an elastic locking member (17) at a position corresponding to the mounting groove (133). The arrangement direction of the locking member (17) is parallel to the surrounding wall of the casing (1) along the axial direction of the mounting groove (133). During assembly, one end surface of the locking member (17) which is axially facing the baffle (12) abuts against the surrounding wall of the casing (1) along the axial direction of the mounting groove (133).

8. A low power consumption linear high frequency oscillator according to claim 2, characterized in that: The leaf spring assembly (3) comprises a plurality of planar scroll leaf springs (31), two first flanges (311) being arranged on the outer peripheral surface of the planar scroll leaf spring (31) at a circumferential interval of ninety degrees, and the first flanges (311) are welded to the casing (1).

9. A low-power linear high-frequency oscillator according to claim 8, characterized in that: A connecting groove (141) is recessed on the inner wall of the first shell (14) at a position corresponding to the first flange (311); during assembly, the first flange (311) is clamped in the corresponding connecting groove (141).

10. An electric toothbrush, characterized in that: A linear high frequency oscillator comprising any one of claims 1 to 9.

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