CN207039427U - Small-sized high-frequency electric machines - Google Patents

Abstract

A kind of small-sized high-frequency electric machines, it includes central shaft, group of magnets, shell, iron core, coil, it is characterized in that, the iron core is provided with the central shaft hole extended along its length, the central shaft is connected in the central shaft hole, and can be with the iron core synchronous axial system, the shell is coated on outside the iron core, the group of magnets is fixed between the shell and the iron core, its relatively described shell is fixed, the coil of winding along its length is provided with the iron core, the both ends of the coil extend to outside the shell and are used to connect power supply.The features such as new small-sized high-frequency electric machines of this practicality simply, is unlikely to deform with assembling, noise is low, it has very strong practicality, preferably widelys popularize.

Description

Small-sized high-frequency electric machines

【Technical field】

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

【Background technology】

It is well known that traditional vibrating motor is respectively to install one group of adjustable eccentric block at the axle both ends of iron core 32, utilize Centrifugal force caused by rotation obtains exciting force at a high speed for axle and eccentric block.The vibration frequency range of vibrating motor is big, only excited vibration Power ties in power could reduce mechanicalness noise.Because it uses eccentric structure, its amplitude is uneven, and vibration frequency is inadequate It is stable, and be not easy to minimize.Therefore, to meet different use demands, one kind has been developed and magnetic field is produced by alternating current 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, Its Application No. 2015100566771.The motor of this structure, it can produce high frequency low amplitude vibrations, and its vibration frequency is high, and makes an uproar Sound is smaller, and still, its is complicated, and its process and assemble efficiency is low.On the other hand, for being applied on the small articles such as electric toothbrush Vibrating motor, the build of usual motor is the smaller the better, and still, due to existing vibrating motor, its intraware is more, and especially It is that inside needs to set spring leaf, and its structure is not easy smallerization, thus limits it and further apply.

【Utility model content】

The utility model aims to solve the problem that above mentioned problem, and provide it is a kind of it is simple in construction, be easily assembled, smaller small-sized of build High-frequency electric machines.

To achieve the above object, the utility model provides a kind of small-sized high-frequency electric machines, it include central shaft, group of magnets, Shell, iron core, coil, it is characterised in that the iron core is provided with the central shaft hole extended along its length, described Central shaft is connected in the central shaft hole, and can be coated on the iron core with the iron core synchronous axial system, the shell Outside rotor, the group of magnets is fixed between the shell and the iron core, and its relatively described shell is fixed, The coil of winding along its length is provided with the iron core, the both ends of the coil extend to outside the shell and used In connection power supply.

The iron core includes alar part and outer part, and the alar part is symmetrically distributed in the both sides of the central shaft hole, its Outwards extended towards by the outer wall of the central shaft hole and formed, both ends of the outer part from the end of the alar part to alar part Extend and formed.

Poly- magnetic portion, length of the poly- magnetic portion along iron core are provided with the outer surface towards shell of the outer part Spend direction extension.

The poly- magnetic portion is formed by the outer surface indent of the outer part, and it is located in the outer surface of the outer part Centre.

The both ends of the central shaft are extended to outside the end of the iron core, are connected with and are turned in one end of the central shaft Axle, the rotating shaft can be synchronized with the movement with the central shaft, and the free end of the rotating shaft is extended to outside shell by enclosure.

The shell is in the tubular of open at both ends, and it is sheathed on outside the iron core, is distinguished at the both ends of the shell End cover and bearing (ball) cover are connected with, the end cover is provided with the movable span for overlapping the central shaft, the bearing end Cover provided with the centre bore for being used to pass through the free end of the rotating shaft, one end of the central shaft is overlapped in the end cover Movable span in, its other end connection rotating shaft on be arranged with bearing, the bearing is installed in the bearing (ball) cover, described turn The free end of axle is extended to outside bearing (ball) cover through the centre bore.

The group of magnets includes the magnet of four strips, and four bar magnet is respectively separated setting, and respectively with it is described Central shaft is parallel.

Four mounting grooves extended along its length are provided with the inwall of the shell, the magnet is fixed respectively to be filled In the mounting groove.

It also includes magnet fixing member, and the magnet fixing member is located between the shell and the iron core, in institute State magnet fixing member and be provided with four mounting grooves extended along its length, the magnet is fixed at the installation respectively In groove.

The first location division extended along its length is provided with the central shaft, on the inwall of the central shaft hole Provided with the second location division to match with first location division, together with first location division is embedded with the second location division and So that the central shaft is with the iron core synchronous axial system.

Favorable attributes of the present utility model are that it efficiently solves above mentioned problem.Small-sized high-frequency electrical of the present utility model Machine, coil is set around on iron core by it, and group of magnets is installed between iron core and shell, makes iron core by alternation electricity The polarity inversion of rotor, so that group of magnets can attract iron core to rotate and produce reciprocating rotation.It is of the present utility model small Type high-frequency electric machines, its is simple in construction, be easily assembled, cost is low, and its build is compact, has a wide range of application, and has very strong practicality Property.

【Brief description of the drawings】

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

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

Fig. 3 is sectional view of the present utility model.

Fig. 4 is cross-sectional view of the present utility model.

Fig. 5 is one of principle schematic of the present utility model.

Fig. 6 is the two of principle schematic of the present utility model.

Wherein, central shaft 1, the first location division 11, shell 2, flat part 21, arc portion 22, iron core 3, central shaft hole 31, Second location division 311, alar part 32, outer part 33, poly- magnetic portion 34, group of magnets 4, N poles magnet 41, end cover 5, movable span 51, Bearing (ball) cover 6, centre bore 61, rotating shaft 7, bearing 8, coil 9

【Embodiment】

The following example is explained further and supplemented to of the present utility model, does not form any limit to the utility model System.

As shown in Fig. 1~Fig. 6, the small-sized high-frequency electric machines of motor of the present utility model includes central shaft 1, shell 2, iron core 3rd, group of magnets 4, end cover 5, bearing (ball) cover 6, rotating shaft 7, bearing 8.

As shown in Fig. 2 the iron core 3 is made up of magnetic material, in the present embodiment, it is laminated by several silicon steel sheets And formed.The iron core 3 is axially symmetric structure, is provided with what is extended along its length in the center of the iron core 3 Central shaft hole 31, the symmetrical overlapping of axles of the central axis of the central shaft hole 31 and the iron core 3.For convenience of winding coil 9, the iron core 3 includes alar part 32 and outer part 33.The alar part 32 is symmetrically distributed in the both sides of the central shaft hole 31, It is outwards extended towards by the outer wall of the central shaft hole 31 and formed.The outer part 33 by the alar part 32 end guide vane The both ends in portion 32 are symmetrically extended and formed.The alar part 32 is used for winding coil 9, and the outer part 33 is used to facilitate winding coil 9, it causes on alar part 32 that coil 9 can be conveniently wrapped between outer part 33 and difficult for drop-off.In the present embodiment, the alar part 32 in regular elongated, the outer surface of the outer part 33, i.e., curved towards a side surface of shell 2, its inner surface, i.e., The side surface being connected with the alar part 32 is in plane, and it is perpendicular to the alar part 32.For convenience of poly- magnetic, beneficial to the collection of magnetic circuit In, the poly- magnetic portion 34 extended along the length direction of iron core 3 is provided with the outer surface center of the outer part 33.The poly- magnetic Portion 34 is formed by the outer surface indent of the outer part 33, and it is the strip being formed on the outer surface of outer part 33 Shape semicircle groove.

As shown in Figure 2 and Figure 3, the central shaft 1 is installed in the central shaft hole 31 of the iron core 3, and it can be with described The synchronous axial system of iron core 3.The length of the central shaft 1 is more than the length of the iron core 3, and its both ends extends respectively to institute State outside the central shaft hole 31 of iron core 3.To make central shaft 1 be synchronized with the movement with iron core 3, it is provided with the central shaft 1 The first location division 11 extended along its length, the second location division 311 to match, institute are provided with the central shaft hole 31 State the first location division 11 and the second location division 311 be embedded and so that central shaft 1 can be moved without phase occurs with iron core 3 simultaneously To it is circumferentially displaced.In the present embodiment, first location division 11 is the prominent raised line being formed on the surface of central shaft 1, Second location division 311 is the groove for the indent being formed on the inwall of central shaft hole 31.In other embodiment, described first is fixed Position portion 11 can be groove, and the second location division 311 can be prominent raised line.

As shown in Figure 2 and Figure 3, the rotating shaft 7 is connected with the central shaft 1, and it can be with the synchronous axial system of central shaft 1. One end end of the rotating shaft 7 is provided with the installing blind of indent, the end phase of the installing blind and the central shaft 1 Match somebody with somebody, the end of the central shaft 1 is plugged in the installing blind and linked together with the rotating shaft 7.For prevent rotating shaft 7 with Central shaft 1 occur it is circumferentially displaced, can be in the corresponding location division of upper setting of the installing blind and central shaft 1.The location division Structure include but is not limited to the structure such as projection, groove.The axle center of the installing blind and the axis coinciding of the rotating shaft 7.Institute The one end relative with installing blind for stating rotating shaft 7 is its free end, and it is used to connect object to be driven, as toothbrush is first-class.Institute Stating the shape of the free end of rotating shaft 7 can be set as desired, and in the present embodiment, it is in double flat-shaped, and it can facilitate positioning and plug-in mounting And it is attached.

As shown in Fig. 2 the shell 2 is coated on outside the iron core 3, it is in the tubular of open at both ends.The present embodiment In, the shell 2 is integrally formed, its convenient installation.In other embodiment, the shell 2 also can structure identical half-shells pair Conjunction is formed by connecting.End cover 5 is connected with one end of the shell 2, bearing (ball) cover is connected with the other end of the shell 2 6.In the present embodiment, to make the build of whole motor more compact, the shell 2 integrally enclosed by flat part 21 and arc portion 22 and Into.The parallel interval of flat part 21, the distance being spaced between it is related to the angle that the iron core 3 back and forth deflects, its The rotation of the iron core 3 is not interfered.The arc portion 22 is connected between the end of flat part 21, itself and the iron core Path during 3 rotation is related, and it does not interfere the outer part 33.

As shown in Figure 2 and Figure 3, the shape of the end cover 5 and the end shape of the shell 2 match, and its pairing connects It is connected to the end of the shell 2 and seals up the open-ended of the shell 2.Activity is provided with the center of the end cover 5 Hole 51, it is used for the end for overlapping the central shaft 1.

As shown in Figure 2 and Figure 3, the pairing of bearing (ball) cover 6 is connected to the end of the shell 2, and its salable residence is stated outer Shell 2 it is open-ended.The bearing (ball) cover 6 is configured for installing bearing 8.In addition, in the center of the bearing (ball) cover 6 Centre bore 61 is additionally provided with, it is used to make the free end of the rotating shaft 7 pass through and extend to outside bearing (ball) cover 6.

As shown in Fig. 2 the group of magnets 4 includes the magnet of four strips.The magnet is arranged at intervals, its respectively with institute It is parallel to state central shaft 1, it is used to attract the iron core 3 and make iron core 3 be rotated by a small margin.For convenience of installation institute Magnet is stated, in certain embodiments, four installations extended along its length can be set respectively on the inwall of the shell 2 Groove (not shown), the magnet is installed so as to convenient.In certain embodiments, also can be in the shell 2 and the iron Magnet fixing member (not shown) is set between core rotor 3, corresponding strip mounting groove is set on magnet fixing member, from And the magnet is conveniently installed.The magnet fixing member can be fixed by known mode and the shell 2, so that described The relatively described shell 2 of group of magnets 4 fixes difference.In other embodiments, also the group of magnets 4 can be consolidated in other way Surely it is arranged between the iron core and shell 2, makes its relatively described shell 2 fixed, so as to attract the iron core Rotor 3 rotates.To make the iron core 3 carry out reciprocating rotation, the group of magnets 4 can be set in the following manner：Such as Fig. 4 It is shown, by the central axis through the iron core 3 and perpendicular to the plane F of the flat part 21 on the basis of plane, in base Directrix plane F both sides are respectively symmetrically provided with N poles magnet 41 and S poles magnet 42, two F pairs of relative datum plane of S poles magnet 42 Claim, two N poles magnet 41 relative datum plane F is symmetrical, and a N poles magnet is respectively equipped with datum plane F the same side 41 and S poles magnet 42.It should be noted that N poles magnet 41 refer to its towards the polarity of the side of iron core 3 be N poles Magnet, S poles magnet 42 refer to its towards the side of iron core 3 polarity be S poles magnet, N poles magnet 41 and S poles magnet 42 can be homopolar magnet or bipolar magnet, and N poles magnet 41 and S described in the utility model Pole magnet 42, then be for convenience of explanation group of magnets 4 when mounted towards the side of iron core 3 polarity difference, institute It is probably identical magnet to state four magnet, and simply it causes it towards the iron core towards difference when mounted The polarity of 3 sides is otherwise varied, so as to form the N poles magnet 41 and S poles magnet 42 described in the utility model.N poles magnetic The distance being spaced between iron 41 and S poles magnet 42, determine the deflection angle of the iron core 3.

Thereby, small-sized high-frequency electric machines of the present utility model is just formd：As shown in figure 3, the central shaft 1 be installed in it is described In the central shaft hole 31 of iron core 3, the both ends of central shaft 1 are extended to outside iron core 3, and its one end is overlapped in the sealed end In the movable span 51 of lid 5, its other end is connected with rotating shaft 7, and bearing 8 is arranged with the rotating shaft 7, and bearing 8 is installed in described On bearing (ball) cover 6, bearing (ball) cover 6 is connected to the end of shell 2, and the free end of rotating shaft 7 passes through the centre bore of the bearing (ball) cover 6 61 and extend to outside bearing (ball) cover 6.The shell 2 is coated on outside iron core 3, and its one end pairing is connected with end cover 5, its Other end pairing is connected with bearing (ball) cover 6.The group of magnets 4 is fixedly installed between shell 2 and iron core 3, and it is with respect to institute It is fixed to state shell 2.Be arranged with coil 9 on the alar part 32 of iron core 3, length direction of the coil 9 along iron core 3 around If its both ends extends respectively to be used to connect power supply outside shell 2.

In use, when 9 no power of coil, as shown in figure 4, the iron core 3 remains static, iron core 3 Alar part 32 parallel to the shell 2 flat part 21.When accessing positive and negative square wave power to coil 9, coil 9 is powered and produced Magnetic field, according to Ampere's law (screw law), in the range of positive wave, the magnetic in two poly- magnetic portions 34 of two iron cores 3 Property on the contrary, one end forms N poles, one end forms S poles, and now due to magnet, identical charges repel each other that there is a natural attraction between the sexes, as shown in figure 5, S poles is poly- Magnetic portion 34 will be attracted by the N poles magnet 41 near it, and the poly- magnetic portion 34 of N poles will be attracted by the S poles magnet 42 near it, so that Obtain iron core 3 to rotate, clockwise as shown in Figure 5 rotates；And when in the range of negative wave, as shown in fig. 6, its work is former Manage it is similar, because the sense of current on coil 9 is reverse, thus the magnetic in poly- magnetic portion 34 will invert so that it is by current Magnet repels, and by neighbouring attraction, so that iron core 3 rotates backward, as shown in Figure 6 rotates counterclockwise.When When being persistently passed through positive and negative square wave to coil 9, iron core 3 will between N poles magnet 41 and S poles magnet 42 reciprocating rotation.Iron The reciprocating rotation of core rotor 3 drives the reciprocating rotation of central shaft 1, and the reciprocating rotation of central shaft 1 drives the reciprocating rotary of rotating shaft 7 It is dynamic, moved so as to outwards export band animal body, such as drive head toothbrushes to produce vibration.In the present embodiment, the iron core turns The angle of sub 3 reciprocating rotations is not more than 15 degree.Because the rotational angle of iron core 3 is small, therefore it can produce dither, and energy Vibration is stable caused by ensureing.Small-sized high-frequency electric machines of the present utility model is simple in construction, easy to assembly, and build is compact, has very Strong practicality, is preferably widelyd popularize.

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, it is similar that each component of the above can use art personnel to understand Or equivalent element is replaced.

Claims (10)

1. a kind of small-sized high-frequency electric machines, it includes central shaft (1), group of magnets (4), shell (2), iron core (3), coil (9), Characterized in that, the iron core (3) is provided with the central shaft hole (31) extended along its length, the central shaft (1) is even It is connected in the central shaft hole (31), and the iron can be coated on the iron core (3) synchronous axial system, the shell (2) Outside, the group of magnets (4) is fixed between the shell (2) and the iron core (3) core rotor (3), and it is with respect to institute State that shell (2) is fixed, the coil (9) of winding along its length, the coil are provided with the iron core (3) (9) both ends extend to the shell (2) and are used to connect power supply outside.

2. small-sized high-frequency electric machines as claimed in claim 1, it is characterised in that the iron core (3) include alar part (32) and Outer part (33), the alar part (32) are symmetrically distributed in the both sides of the central shaft hole (31), and it is by the central shaft hole (31) Outer wall outwards extend towards and formed, the outer part (33) is prolonged from the end of the alar part (32) to the both ends of alar part (32) Stretch and formed.

3. small-sized high-frequency electric machines as claimed in claim 2, it is characterised in that in the outer part (33) towards shell (2) Outer surface be provided with poly- magnetic portion (34), length direction extension of the poly- magnetic portion (34) along iron core (3).

4. small-sized high-frequency electric machines as claimed in claim 3, it is characterised in that the poly- magnetic portion (34) is by the outer part (33) Outer surface indent and formed, its be located at the outer part (33) outer surface center.

5. small-sized high-frequency electric machines as claimed in claim 1, it is characterised in that the both ends of the central shaft (1) extend to described Outside the end of iron core (3), rotating shaft (7) is connected with one end of the central shaft (1), the rotating shaft (7) can be with described Mandrel (1) is synchronized with the movement, and the free end of the rotating shaft (7) is internal by shell (2) and extends to shell (2) outside.

6. small-sized high-frequency electric machines as claimed in claim 5, it is characterised in that the shell (2) is in the tubular of open at both ends, its It is sheathed on the iron core (3) outside, end cover (5) and bearing (ball) cover is connected at the both ends of the shell (2) (6), the end cover (5) is provided with the movable span (51) for overlapping the central shaft (1), and the bearing (ball) cover (6) is provided with The centre bore (61) passed through for the free end for making the rotating shaft (7), one end of the central shaft (1) are overlapped in the sealed end Cover in the movable span (51) of (5), be arranged with bearing (8) in the rotating shaft (7) of its other end connection, the bearing (8) is installed in institute State in bearing (ball) cover (6), the free end of the rotating shaft (7) extends to bearing (ball) cover (6) outside through the centre bore (61).

7. small-sized high-frequency electric machines as claimed in claim 6, it is characterised in that the group of magnets (4) includes four strips Magnet, four bar magnet are respectively separated setting, and parallel with the central shaft (1) respectively.

8. small-sized high-frequency electric machines as claimed in claim 7, it is characterised in that four are provided with the inwall of the shell (2) The mounting groove extended along its length, the magnet are fixed in the mounting groove respectively.

9. small-sized high-frequency electric machines as claimed in claim 7, it is characterised in that it also includes magnet fixing member, and the magnet is consolidated Determine part to be located between the shell (2) and the iron core (3), four sides along its length are provided with the magnet fixing member To the mounting groove of extension, the magnet is fixed in the mounting groove respectively.

10. small-sized high-frequency electric machines as claimed in claim 1, it is characterised in that be provided with along its length on the central shaft (1) The first location division (11) of direction extension, is provided with and the first location division (11) phase on the inwall of the central shaft hole (31) The second location division (311) of matching, together with first location division (11) is embedded with the second location division (311) and described in causing Central shaft (1) is with the iron core (3) synchronous axial system.