CN207382166U - Small-sized high-frequency vibration device - Google Patents

Abstract

A kind of small-sized high-frequency vibration device, it includes shaft, group of magnets, iron core, iron core stator, casing assembly, the group of magnets is arranged on the iron core, the iron core stator is arranged on outside the iron core, and in the casing assembly, it is characterized in that, central shaft is arranged in the iron core, the central shaft is coaxially disposed with the shaft, and one end of the central shaft is fixedly connected with the shaft, connector is externally provided in the iron core, spring leaf is connected in the other end opposite with shaft of the connector, one end of the spring leaf is fixedly connected with the connector, its other end is inserted into the casing assembly, the spring leaf is coaxially disposed with the shaft.The small-sized high-frequency vibration device vibration frequency of the utility model is high, its is simple in structure, is easily assembled, and low energy consumption, long lifespan, noise is small, build is compact, has very strong practicability, can be widely applied to the articles for use such as vibrations toothbrush, sound wave face washing device, massager, sex toy.

Description

Small-sized high-frequency vibration device

【Technical field】

The utility model is related to motor, more particularly to it is a kind of it is simple in structure, be easily assembled, vibration frequency is high, small Small-sized high-frequency vibration device.

【Background technology】

It is well known that traditional vibrating motor is respectively to install one group of adjustable eccentric block at iron core axis both ends, axis is utilized And the eccentric block centrifugal force that rotation generates at a high speed obtains exciting force.The vibration frequency range of vibrating motor is big, only exciting force Mechanicalness noise could be reduced by tying in power.Since it is using eccentric structure, amplitude is uneven, and vibration frequency is not steady enough It is fixed, and be not easy to minimize.Therefore, to meet different use demands, developed it is a kind of by alternating current generate magnetic field and Make the vibrating device of the small size high frequency rotational of rotor, the art solutions applied before this such as the applicant --- motor, Application No. 2015100566771.The motor of this structure can generate high frequency low amplitude vibrations, and vibration frequency is high, and noise Smaller, still, process and assemble efficiency is low.On the other hand, for the vibrating motor being applied on the small articles such as electric toothbrush, usually The build of motor is the smaller the better, and still, due to existing vibrating motor, internal component is more, and especially inside needs to set Spring leaf 40, structure is not easy smallerization, thus limits it and further apply.

【Utility model content】

The purpose of the utility model is to solve the above problems and to provide it is a kind of it is simple in structure, be easily assembled, build is smaller small-sized High-frequency vibration device.

To achieve the above object, the utility model provides a kind of small-sized high-frequency vibration device, including shaft, magnet Group, iron core, iron core stator, casing assembly, the group of magnets are arranged on the iron core, and the iron core stator is arranged on institute It states outside iron core, and in the casing assembly, which is characterized in that central shaft, institute are arranged in the iron core Central shaft is stated to be coaxially disposed with the shaft, and one end of the central shaft is fixedly connected with the shaft, in the iron core Be externally provided with connector, spring leaf be connected in the other end opposite with shaft of the connector, one end of the spring leaf with The connector is fixedly connected, and the other end is inserted into the casing assembly, and the spring leaf is coaxially disposed with the shaft.

The connector is formed by being molded, and the iron core and spring leaf connection is integral.

The iron core is combined by silicon steel sheet stacking, is equipped in the center of the iron core and is installed the center It is spaced for being installed in the group of magnets to be equipped with several on the outer wall of the iron core for the central shaft hole of axis Magnet mounting groove, the magnet mounting groove is in strip, parallel with the central shaft hole respectively.

The connector includes abutting the first base portion of the iron core and be partially wrapped in outside the iron core Connecting portion, the connecting portion is vertical with first base portion, and the connecting portion is parallel with the central shaft hole, the spring leaf One end is fixedly connected in first base portion, and the other end is extended to outside the connector, the spring leaf and described first Base portion is vertical.

The second base portion is equipped in the other end opposite with the first base portion of the connecting portion, is equipped on second base portion The shaft hole to match with the shaft, the end of the central shaft extend to the shaft hole through the iron core Interior, the end of the shaft is inserted into the shaft hole and is fixed together with the end of the central shaft.

The iron core stator includes the stator unit of two opposite pairings, and the stator unit pairing is in the cylinder of both ends open Shape is respectively equipped with the positioning convex portion extended along its length, between the positioning convex portion is opposite on the inner wall of each stator unit Every being arranged with coil bag respectively in the positioning convex portion.

The casing assembly includes the tubular case body of open at both ends, the first end cap for being connected to case body both ends With the second end cap, the through hole for being provided through the shaft is covered in the first end, the end of the shaft passes through described first The through hole of end cap and extend to outside the first end cap, insert the plug-in opening of the spring leaf in being internally provided with for second end cap, One end of the spring leaf is connected with the connector, and the other end is plugged in the plug-in opening.

The spring leaf is springs, and inserting block, the inserting block and institute are equiped in the inside of second end cap It states the end of connector separately, is equipped with the plug-in opening on the inserting is fast, the end of the spring leaf is plugged in described In the socket aperture for inserting block.

It is covered in the first end equipped with bearing groove, the bearing groove is penetrated through with the through hole, is set in the bearing groove There is rolling bearing, the inner ring of the rolling bearing is set in the shaft.

The magnet mounting groove is symmetrically distributed on the iron core, set altogether there are four, the iron core stator is determined The center of the position two neighboring magnet mounting groove of protrusion face.

The favorable attributes of the utility model are, efficiently solve the above problem.The small-sized high frequency vibrating of the utility model Dynamic device is passed through the sense of current of coil by control according to electromagnetic induction and magnet identical charges repel each other principle of opposite sex attraction, So that iron core deflects and drives central shaft reciprocating rotation, vibrating effect is realized.The small-sized high frequency of the utility model Vibrating device, iron core, central shaft and spring leaf are combined in injection moulding process one by the connector of injection molding It rises, is subsequently assembled so as to whole, and then the installation difficulty of spring leaf can be simplified, improve efficiency of assembling.In addition, this practicality New small-sized high-frequency vibration device uses the form of coil bag, and the coil of non-traditional coiling, thus can be direct in assembling It is sleeved on iron core stator, greatly simplifies coil-winding difficulty, and then beneficial to raising efficiency of assembling.The small-sized height of the utility model Frequency vibration device vibration frequency is high, simple in structure, be easily assembled, and low energy consumption, long lifespan, noise is small, build is compact, tool There is very strong practicability, can be widely applied to the articles for use such as vibrations toothbrush, sound wave face washing device, massager, sex toy.

【Description of the drawings】

Fig. 1 is the overall structure diagram of the utility model.

Fig. 2 is the structural decomposition diagram of the utility model.

Fig. 3 is the sectional view of the utility model, wherein, it is that plane where along the positioning convex portion of iron core stator 60 is cutd open It cuts.

Fig. 4 is another sectional view of the utility model, wherein, it is that edge is cutd open perpendicular to the plane where positioning convex portion It cuts.

Fig. 5 is the structure diagram that connector, iron core, central shaft and spring leaf link together.

Fig. 6 is another sectional view of the utility model, wherein, it is to carry out cutting along the cross section of iron core.

Fig. 7 is the principle schematic of embodiment 1.

Fig. 8 is the principle schematic of embodiment 1.

Fig. 9 is the principle schematic of embodiment 2.

Figure 10 is the principle schematic of embodiment 2.

Wherein, iron core 10, central shaft hole 11, magnet mounting groove 12, locating slot 13, central shaft 20, shaft 30, spring Piece 40, connector 50, the first base portion 51, connecting portion 52, the second base portion 53, shaft hole 531, iron core stator 60, positioning convex portion 611st, flat part 612, arc portion 613, casing assembly 70, case body 71, the first end cap 72, the first cartridge part 721, the first convex edge Portion 722, first boss portion 723, through hole 725, the second end cap 73, the second cartridge part 731, the second convex edge portion 732, second boss portion 733rd, threading hole 734, inserting block 74, coil bag 80, location hole 81, group of magnets 90, rolling bearing 100.

【Specific embodiment】

The following example is being explained further and supplementing to the utility model, does not form any limit to the utility model System.

As shown in Fig. 1~Figure 10, the small-sized high-frequency vibration device of the utility model includes central shaft 20, shaft 30, shell Component 70, iron core 10, iron core stator 60, spring leaf 40, group of magnets 90, coil bag 80.

As shown in Fig. 2, the iron core 10 is made of magnetic material, in the present embodiment, by several silicon steel lamellas It folds and is formed.The iron core 10 is axially symmetric structure, is equipped in the center of the iron core 10 and prolongs along its length The central shaft hole 11 stretched, the symmetrical overlapping of axles of the central axis of the central shaft hole 11 and the iron core 10.The center Axis hole 11 is through hole 725.For convenience of the group of magnets 90 is installed, equipped with parallel interval on the outer wall of the iron core 10 Magnet mounting groove 12.In the present embodiment, the magnet mounting groove 12 there are four strip is set on the outer wall of the iron core 10, It distinguishes parallel interval, and integrated symmetric is distributed.In the present embodiment, the magnet mounting groove 12 is passed through by one end of iron core 10 Pass to its other end.

As shown in Figure 2 to 4, the central shaft 20 is installed in the central shaft hole 11 of the iron core 10, can be with The iron core 10 rotates synchronously.The central shaft 20 can pass through well known assembly method or assembling with the central shaft hole 11 Structure and both realize and to rotate synchronously.The length of the central shaft 20 is more than the length of the iron core 10.The central shaft 20 one end is free end, extends to outside the central shaft hole 11 of the iron core 10, is used for through iron core 10 It extend out to outside iron core 10 and is connected with the shaft 30.The other end of the central shaft 20 both can be with the iron core 10 Concordantly, the end or slightly concave in the end of the iron core 10 of the iron core 10 also can slightly be protruded.In the present embodiment, The other end of the central shaft 20 is concordant with the end of the iron core 10.

As shown in figure 5, for convenience of connecting spring piece 40, simplify installation difficulty and improve connection reliability, the present embodiment In, connector 50 is molded with outside the iron core 10, by being molded the iron core 10, central shaft 20, bullet Reed 40 links together, and is allowed to be assembled as an entirety.Shooting Technique can refer to known technology.After injection molding, The connector 50 of injection molding is surrounded by outside the iron core 10, and one end of spring leaf 40 is fixed on injection molding In connector 50, so that spring leaf 40 is combined together with iron core 10, connector 50.Specifically, after injection molding Connector 50, be equipped with and abut the first base portion 51 of the iron core 10, be partially wrapped in outside the iron core 10 52 and second base portion 53 of connecting portion.In the present embodiment, first base portion 51, shape and the iron core of the second base portion 53 10 end surface shape matches, and the connecting portion 52 is vertically connected between the first base portion 51 and the second base portion 53, so that The iron core 10 can be clamped in 51 and second base portion of the first base portion by 53 relative spacing of the first base portion 51 and the second base portion Between 53.For convenience of injection, and conveniently connector 50 after injection molding is tightly combined with iron core 10, the present embodiment In, locating slot 13 is additionally provided on the outer wall of the iron core 10, the locating slot 13 is elongated, is symmetrically distributed in institute It states on iron core 10, parallel to the magnet mounting groove 12.During injection, the injected plastics material of filling in the locating slot 13 Just the connecting portion 52 is formd after shaping.For convenience of the shaft 30 is installed, shaft hole is equipped on second base portion 53 531.The form and dimension of the shaft hole 531 matches with the shaft 30, is used for so that the shaft 30 is inserted And it links together with the central shaft 20.To link together the spring leaf 40 and the iron core 10 into luggage Match somebody with somebody, during injection, the end of the spring leaf 40 is placed at the 51 corresponding position of the first base portion, can make the bullet Connector 50 of the reed 40 with injection molding outside iron core 10 is fixed together.In the present embodiment, the spring leaf 40 in the form of sheets, and its one end end is connected in the first base portion 51 of the connector 50, and perpendicular to first base portion 51.Institute Spring leaf 40 is stated to be coaxially disposed with the central shaft 20.During injection, the central shaft 20 is placed in the center of the iron core 10 In axis hole 11, so that iron core 10 is fixed together with central shaft 20 after injection.After injection molding, the iron core 10 are limited between 51 and second base portion 53 of the first base portion, and the connection is formed in the locating slot 13 of iron core 10 Portion 52, the end of the spring leaf 40 are fixedly connected in first base portion 51, and the other end is extended to outside the first base portion 51, So that the iron core 10, connector 50, spring leaf 40, central shaft 20 are combined together, can integrally carry out follow-up Assembling, so as to simplify assembly difficulty, improve efficiency of assembling.

As shown in Figure 3, Figure 4, the iron core stator 60 is arranged on outside the iron core 10, positioned at the casing assembly 70 It is interior.As shown in Fig. 2, the iron core stator 60 includes the stator unit 61 of two opposite pairings.The structure of the stator unit 61 Shape is consistent, is made of magnetic material, in the present embodiment, is stacked by several silicon steel sheets and is formed.Two stator units 61 pairings are in the tubular of both ends open.The convex extended along its length is respectively equipped on the inner wall of each stator unit 61 Portion 611 is used to be set with the coil bag 80, to interact with the group of magnets 90 on the iron core 10 so that described Iron core 10 rotates.Specifically, in the present embodiment, the cross section of the stator unit 61 is in the shape similar to " E ", bag It includes the flat part 612 of relative spacing and is connected to the arc portion 613 of two 612 ipsilateral penumbras of flat part.The flat part 612 and arc The length in portion 613, it is preferably consistent with the length of the iron core 10.In the inner surface of the arc portion 613, i.e., towards arc The surface at the cambered surface center in portion 613 is equipped with the positioning convex portion 611.The positioning convex portion 611 is used for poly- magnetic, is used for magnetic Property concentrate and enhance magneticaction.The positioning convex portion 611 is in strip, is located at the center of the arc portion 613 of iron core stator 60 Centre extends along the length direction of iron core stator 60, is respectively separated with the flat part 612 and parallel.In the present embodiment, institute It is consistent with the length of the flat part 612 to state positioning convex portion 611, width is slightly less than the width of the flat part 612.

As shown in Figure 2 to 4, for the iron core stator 60 is made to interact with the iron core 10, in the iron core Coil bag 80 is equipped between stator 60 and the iron core 10.In the present embodiment, there are two the coil bag 80 is set, shape Structure is consistent, is set in the positioning convex portion 611 of the stator unit 61.The coil bag 80 shape by coil winding Into, can integral assembling in the positioning convex portion 611 of the stator unit 61, can be conveniently advance so as to simplify making step Produce coil bag 80, then installed by way of installation, without in assembling process on iron core stator 60 around If coil.The shape of the coil bag 80 and the shape of the stator unit 61 match, and can conveniently be sleeved on the stator Between unit 61 and the iron core 10.In the present embodiment, the arc-shaped bulk of coil, shape and the stator The arc portion 613 of unit 61 matches, and can fit with the inner surface of the arc portion 613 of the stator unit 61；The coil The length of bag 80 is more than the length of the iron core stator 60.For convenience of quick location and installation, shape is equipped on the coil bag 80 The location hole 81 that shape size matches with the positioning convex portion 611, the length of the location hole 81 are not less than the positioning convex portion 611 length is centrally placed in the center of the coil bag 80.

As shown in Figure 1 and Figure 2, the casing assembly 70 includes case body 71, the first end cap 72, the second end cap 73.Into one Step, it may also include inserting block 74.

As shown in Fig. 2, the case body 71 is in the tubular of both ends open, shape and the shape of the iron core stator 60 Match, in the present embodiment, the cross section of the case body 71 is oval run-track shaped.In the present embodiment, the shell The length of housing 71 is more than the length of the coil bag 80, so as to facilitate device.In other embodiment, the case body 71 Length can also be set as desired.

As shown in Figure 2 and Figure 3,72 pairing of the first end cap is connected to one end end of the case body 71.Described First end cap 72, which is equipped with, facilitates the through hole 725 that the shaft 30 passes through.The form and dimension of the through hole 725 and the shaft 30 match.In the present embodiment, the through hole 725 is located at the center of first end cap 72.In addition, in first end cap 72 On be additionally provided with bearing groove, be used to that rolling bearing 100 to be installed.The bearing groove is penetrated through in annular shape with the through hole 725. For convenience of being inserted with the case body 71, in the present embodiment, first end cap 72 includes integrally formed first cartridge part 721st, the first convex edge portion 722 and first boss portion 723.First cartridge part 721 is used to be inserted into the case body 71 Inside, first convex edge portion 722 abut the end of the case body 71 for /V, and the first boss portion 723 is located at The outside of the case body 71.First cartridge part 721 is cylindrical in shape, shape and the end shape of the case body 71 Match, the outside dimension of first cartridge part 721 and the inside dimension of 71 end of case body match, when the first cartridge part 721 with the case body 71 to being combined when, the outer surface of first cartridge part 721 is interior with the case body 71 Surface fits.The inside dimension of first cartridge part 721 should not interfere the coil bag 80.First convex edge portion, 722 shape Described in Cheng Yu between the first cartridge part 721 and the first boss portion 723, outside dimension is slightly larger than first cartridge part 721 Outside dimension, so as to form convex edge in the end of the first cartridge part 721, the end of the case body 71 is abutted to /V. To enhance appearance globality, in the present embodiment, the outside dimension of the outside dimension in first convex edge portion 722 and the case body 71 Match.The first boss portion 723 is in round table-like, is located at the centre in first convex edge portion 722, and outer diameter is less than institute State the outside dimension in the first convex edge portion 722.Stepped hole is equipped in the first boss portion 723, which is through hole 725, With the internal run-through of first cartridge part 721.The stepped hole is round hole, and the macropore being relatively large in diameter is towards described first Cartridge part 721 forms the bearing groove, is used to install rolling bearing 100；The smaller aperture back of the body of diameter in the stepped hole From first cartridge part 721, it is located at the end in first boss portion 723, forms the through hole 725, is used to make described Shaft 30 pass through and and cause shaft 30 can be by the internal stretch of casing assembly 70 to the outside of casing assembly 70.

As shown in Figure 2 and Figure 3,73 pairing of the second end cap be connected to the case body 71 with 72 phase of the first end cap To the other end.Second end cap 73 is used to cover the end of the case body 71, and for inserting the spring leaf 40.For convenience of being inserted with the case body 71, in the present embodiment, second end cap 73 includes the integrally formed second inserting Portion 731, the second convex edge portion 732 and second boss portion 733.Second cartridge part 731 is used to be inserted into the case body 71 Inside, second convex edge portion 732 abuts the end of the case body 71,733, the second boss portion for /V In the outside of the case body 71.Second cartridge part 731 is cylindrical in shape, shape and the end shape of the case body 71 Shape matches, and the outside dimension of second cartridge part 731 and the inside dimension of 71 end of case body match, when the second inserting When portion 731 and the case body 71 are to being combined, the outer surface of second cartridge part 731 and the case body 71 Inner surface fits.The inside dimension of second cartridge part 731 should not interfere the coil bag 80.Second convex edge portion 732 It is formed between second cartridge part 731 and the second boss portion 733, outside dimension is slightly larger than second cartridge part So as to form convex edge in the end of the second cartridge part 731, the end of the case body 71 is abutted to /V for 731 outside dimension Portion.To enhance appearance globality, in the present embodiment, the outside dimension in second convex edge portion 732 is outer with the case body 71 Size matches.The shape in the second boss portion 733 is unlimited, is located at the centre in first convex edge portion 722, length It is related to the length of the spring leaf 40.The inner hollow in the second boss portion 733, with second cartridge part 731 Internal run-through, be used to installing the inserting block 74, to facilitate the end for inserting the spring leaf 40.Connect for convenience of lead Connect, be additionally provided with threading hole 734 on second end cap 73, the threading hole 734 penetrate through the outside of second end cap 73 with It is internal so that the connecting pin of the coil bag 80 in casing assembly 70 can be by leading in casing assembly 70 outside casing assembly 70.This In embodiment, there are two the threading hole 734 is set altogether, it is symmetrically set in second convex edge portion 732, by the second convex edge portion 732 surface is vertically through to the inside of the second end cap 73, and its position is corresponding with the position of the coil bag 80, so as to side Just the connecting pin of coil bag 80 is led to outside the second end cap 73 and carries out wiring.

As shown in Figure 3, Figure 4, the inserting block 74 is installed in the inside in the second boss portion 733, shape with it is described The interior shape in second boss portion 733 matches.Plug-in opening, shape and the spring leaf 40 are equipped on the inserting block 74 End shape match, be used to insert the spring leaf 40.In other embodiment, the inserting block 74 and the plug-in opening And the structure in first convex edge portion 722 is integrally formed, for example, can be directly in the direction in first convex edge portion 722 The plug-in opening is set on the position of the spring leaf 40, without being separately provided independent inserting block 74.

As shown in Figure 3, Figure 4, the length of 721 and second cartridge part 731 of the first cartridge part and the iron core stator 60 Length it is related.When pairing is connected to the both ends of the case body 71 to 72 and second end cap 73 of the first end cap respectively, The distance between end of first cartridge part 721 and the second cartridge part 731 should be consistent with the length of the iron core stator 60, so as to /V can be carried out to the iron core stator 60 from the both ends of iron core stator 60, by 60 stable holding of iron core stator in the first end cap 72 And second between end cap 73 so that iron core stator 60 can not be moved and rotated.

Thereby, the small-sized high-frequency vibration device of the utility model is just formd.The iron core 10, spring leaf 40, in Mandrel 20 is combined together by the connector 50 of injection molding to be molded.During assembling, it can refer in the following manner and assembled：

1st, group of magnets 90 is mounted in the magnet mounting groove 12 of the iron core 10；

2nd, coil bag 80 is separately mounted in the positioning convex portion 611 of stator unit 61；And by 61 pairing bag of stator unit Overlay on the periphery of iron core 10；

3rd, the connecting pin of coil bag 80 is led into second end through the threading hole 734 by the inside of the second end cap 73 The outside of lid 73；

4th, the end of spring leaf 40 is inserted into the plug-in opening of the second end cap 73；

The 5th, case body 71 is sleeved on to the periphery of iron core stator 60, and linked together with 73 pairing of the second end cap；

6th, the installation shaft 30 in the shaft hole 531 of connector 50, by the end of shaft 30 and the end of central shaft 20 Portion is fixed together；

7th, rolling bearing 100 is mounted in the bearing groove of the first end cap 72, and its integral assembling is made in shaft 30 It obtains shaft 30 and passes through first end cap 72；

8th, the first end cap 72 and 71 pairing of case body are linked together.

By above-mentioned installation step, the iron core 10, iron core stator 60 etc. can be assembled in the casing assembly 70 It is interior.It should be noted that above-mentioned installation step is only a kind of feasible assembling example, during assembling, above-mentioned assembling step can be not limited to Suddenly, those skilled in the art can refer to above-mentioned steps and the adjustment and optimization of installation step carried out according to actual conditions, for example, can The step of by the step of 6,7,8 with 3,4,5, is exchanged, and first assembles the first end cap 72, rear to assemble the second end cap 73；For another example, Can be by 6,7 the step of, is exchanged etc..

The small-sized high-frequency vibration device assembled, the interval of group of magnets 90 is mounted on the magnet mounting groove of the iron core 10 In 12；Central shaft 20 is fixedly connected with iron core 10 and shaft 30 and can rotate synchronously；60 semi-surrounding of iron core stator is in iron Outside core rotor 10, coil bag 80 is sleeved in the positioning convex portion 611 of iron core stator 60, and positioned at iron core stator 60 and iron core Between 10；The middle part of the 611 face group of magnets 90 of positioning convex portion of iron core stator 60；Case body 71 is coated on iron core stator Outside 60, the first end cap 72 and 73 pairing of the second end cap are connected to the both ends of case body 71, and the first end cap 72 and the second end cap 73 clamp the iron core stator 60 so that iron core stator 60 is stably mounted to not move and rotate in casing assembly 70； One end of spring leaf 40 and connector 50 are affixed, and the other end is inserted into the plug-in opening of the second end cap 73；Shaft 30 it is another End is extend out to through the through hole 725 of the first end cap 72 outside casing assembly 70, for being attached with treating attachment, for example, with Head toothbrushes connection of electric toothbrush etc..

In use, when coil 80 no power of bag, as shown in fig. 6, the iron core 10 remains static, the iron The positioning convex portion 611 of core stator 60 corresponds to the position between the magnet of group of magnets 90, not face magnet.It is connect when to coil bag 80 When entering positive and negative square wave power, coil is powered and generates magnetic field so that the positioning convex portion of iron core stator has polarity, so as to pass through Magnetic variation and attract the group of magnets 90 of opposed polarity so that reciprocating rotation occurs for iron core 10, so as to fulfill high frequency vibrating It is dynamic.According to group of magnets 90, the difference of the set-up mode of coil bag 80, principle is slightly different, below with different embodiment point It carry out not principle explanation：

Embodiment 1

The group of magnets 90 of the present embodiment is set altogether there are four magnet, the center of the magnet of opposed polarity along the central shaft hole 11 Axis is axisymmetricly distributed, i.e., as shown in Figure 7, Figure 8, N poles is equipped in the one side of two 13 lines of locating slot of iron core 10 Magnet, S poles magnet are equipped with S poles magnet, N poles magnet in opposite side.It should be noted that N poles magnet, S poles magnet are with same What the polarity of the magnet of one end distinguished, it is formed by identical magnet by different mounting means.The coil The coiling of bag 80 and the distribution of the mode of connection and the group of magnets 90 match.When being powered to the coil bag, according to ampere Rule (screw law), in the range of positive wave, the magnetism of two positioning convex portions 611 of iron core stator 60 is identical, is such as all N Pole, due to magnet, identical charges repel each other that there is a natural attraction between the sexes at this time, attracts as shown in fig. 7, S poles magnet will be positioned protrusion 611, so that Iron core 10 rotates, and clockwise as shown in Figure 7 rotates；And when in the range of negative wave, as shown in figure 8, its work is former Manage it is similar, since the current direction on coil is reversed, thus positioning convex portion 611 it is magnetic will reversion, S poles are changing by N poles, So that current S poles magnet is ostracised, and N poles magnet is attracted, so that iron core 10 rotates backward, such as Fig. 8 Shown rotates counterclockwise.When being persistently passed through positive and negative square wave to coil, iron core 10 will be in N poles magnet and S poles magnet Between reciprocating rotation.The reciprocating rotation of iron core 10 drives 30 reciprocating rotation of shaft, so as to outwards export band animal Body is moved, and such as head toothbrushes is driven to generate vibration.

Embodiment 2

The group of magnets 90 of the present embodiment is equipped with 4 magnet altogether, and the magnet of opposed polarity is along the place of the locating slot 13 Central plane is symmetric.The central plane refers to through the flat of the central axis of the locating slot 13 and central shaft hole 11 Face.In other words, as shown in Figure 9, Figure 10, it is equipped with N poles magnet, S poles in the one side of two 13 lines of locating slot of iron core 10 Magnet also is provided with N poles magnet, S poles magnet in opposite side.The coiling of the coil bag 80 and the mode of connection and the group of magnets 90 Distribution match.When being powered to the coil, according to Ampere's law (screw law), in the range of positive wave, iron core The magnetism of two positioning convex portions 611 of stator 60 is on the contrary, one end forms N poles, and one end forms S poles, at this time due to magnet same sex phase There is a natural attraction between the sexes for reprimand, as shown in figure 9, the positioning convex portion 611 of S poles will attract N poles magnet near it, the positioning convex portion 611 of N poles is inhaled Draw the S poles magnet near it, so that iron core 10 rotates, clockwise as shown in Figure 9 rotates；And in negative wave model When enclosing interior, as shown in Figure 10, operation principle is similar, since the current direction on coil bag 80 is reversed, thus positioning convex portion 611 It is magnetic will reversion so that current magnet is ostracised, and the magnet of opposite polarity is attracted, so that iron core 10 rotate backward, and as shown in Figure 10 rotates counterclockwise.When being persistently passed through positive and negative square wave to coil bag 80, iron core 10 is just Meeting reciprocating rotation between N poles magnet and S poles magnet.The reciprocating rotation of iron core 10 drives 30 reciprocating rotation of shaft, It is moved so as to outwards export band animal body, such as head toothbrushes is driven to generate vibration.

The electric current of the coil bag 80 is passed through by control, the reciprocating rotation of the iron core 10 can be controlled.It is described The rotational angle of iron core 10 is related to the angle of the group of magnets 90 distribution.For the small-sized high frequency vibrating of the utility model Dynamic device, the rotational angle of iron core 10 is smaller, thus it can generate high-frequency vibration.

Although being disclosed by above example to the utility model, the scope of the utility model is not limited to In this, under conditions of conceiving without departing from the utility model, more than each component can use technical field personnel understand it is similar Or equivalent element is replaced.

Claims (10)

1. a kind of small-sized high-frequency vibration device, including shaft (30), group of magnets (90), iron core (10), iron core stator (60), casing assembly (70), the group of magnets (90) are arranged on the iron core (10), and the iron core stator (60) is arranged on institute State iron core (10) outside, and in the casing assembly (70), which is characterized in that it is arranged in the iron core (10) Have a central shaft (20), the central shaft (20) is coaxially disposed with the shaft (30), and one end of the central shaft (20) with it is described Shaft (30) is fixedly connected, and connector (50) is externally provided in the iron core (10), the connector (50) and shaft (30) the opposite other end is connected with spring leaf (40), one end and the fixed company of the connector (50) of the spring leaf (40) It connects, the other end is inserted into the casing assembly (70), and the spring leaf (40) is coaxially disposed with the shaft (30).

2. small-sized high-frequency vibration device as described in claim 1, which is characterized in that the connector (50) is by being molded and shape Into, by the iron core (10) and spring leaf (40) connection it is integral.

3. small-sized high-frequency vibration device as described in claim 1, which is characterized in that the iron core (10) is by silicon steel lamella It is folded to be combined into, the central shaft hole (11) for installing the central shaft (20) is equipped in the center of the iron core (10), in institute The outer wall for stating iron core (10) is equipped with several spaced magnet installations for being used to be installed in the group of magnets (90) Slot (12), the magnet mounting groove (12) is in strip, parallel with the central shaft hole (11) respectively.

4. small-sized high-frequency vibration device as claimed in claim 3, which is characterized in that the connector (50) is included described in abutting The first base portion (51) of iron core (10) and it is partially wrapped in the connecting portion (52) of the iron core (10) outside, the connection Portion (52) is vertical with first base portion (51), and the connecting portion (52) is parallel with the central shaft hole (11), the spring leaf (40) one end is fixedly connected in first base portion (51), and the other end extends to the connector (50) outside, the bullet Reed (40) is vertical with first base portion (51).

5. small-sized high-frequency vibration device as claimed in claim 4, which is characterized in that in the connecting portion (52) and the first base The opposite other end in portion (51) is equipped with the second base portion (53), is equipped with and the shaft (30) phase on second base portion (53) The shaft hole (531) matched somebody with somebody, the end of the central shaft (20) extend to the shaft hole through the iron core (10) (531) in, the end of the shaft (30) is inserted into the shaft hole (531) and is fixed with the end of the central shaft (20) It links together.

6. small-sized high-frequency vibration device as claimed in claim 5, which is characterized in that the iron core stator (60) includes two phases To the stator unit (61) of pairing, stator unit (61) pairing is in the tubular of both ends open, in each stator unit (61) The positioning convex portion (611) extended along its length, positioning convex portion (611) relative spacing, in institute are respectively equipped on inner wall It states and is arranged with coil bag (80) in positioning convex portion (611) respectively.

7. small-sized high-frequency vibration device as claimed in claim 6, which is characterized in that the casing assembly (70) opens including both ends The tubular case body (71) of mouth is connected to first end cap (72) at case body (71) both ends and the second end cap (73), The through hole (725) of the shaft (30) is provided through on first end cap (72), the end of the shaft (30) is described in The through hole (725) of first end cap (72) and extend to the first end cap (72) outside, it is slotting in being internally provided with for second end cap (73) The plug-in opening of the spring leaf (40) is filled, one end of the spring leaf (40) is connected with the connector (50), and the other end is inserted Loaded in the plug-in opening.

8. small-sized high-frequency vibration device as claimed in claim 7, which is characterized in that the spring leaf (40) is springs, Inserting block (74), the inserting block (74) and the end of the connector (50) are equiped in the inside of second end cap (73) Separately, the plug-in opening is equipped on the inserting is fast, the end of the spring leaf (40) is plugged in the inserting block (74) Socket aperture in.

9. small-sized high-frequency vibration device as claimed in claim 8, which is characterized in that axis is equipped on first end cap (72) Slot is held, the bearing groove is penetrated through with the through hole (725), and rolling bearing (100), the axis of rolling are equipped in the bearing groove The inner ring for holding (100) is set in the shaft (30).

10. small-sized high-frequency vibration device as claimed in claim 9, which is characterized in that the magnet mounting groove (12) is symmetrically divided Be distributed on the iron core (10), set altogether there are four, positioning convex portion (611) face adjacent two of the iron core stator (60) The center of a magnet mounting groove (12).