CN208316544U - Motor stator, motor, linear motor stator electric and linear motor - Google Patents

Abstract

The utility model provides a kind of motor stator, motor, linear motor stator electric and linear motor, motor includes n coaxial electric motor units, electric motor units include rotor unit and stator unit, magnetic pole of the stator and mover magnetic pole are m, there is machinery drift angle a between electric motor units, mechanical drift angle a=360/ (n × m) degree, rotor magnetic pole it is intermediate polarity opposite；Magnetic pole of the stator it is intermediate polarity on the contrary, hall device is arranged between magnetic pole of the stator.Linear motor includes n electric motor units arranged side by side along the y axis, and electric motor units include subunit and stator unit, and the quantity of magnetic pole of the stator is m, and mover number of magnetic poles is z, and a hall device is arranged every z-1 magnetic pole of the stator on stator unit；Magnetic pole of the stator has spacing d, and mover magnetic pole has spacing d, and electric motor units have offset h, offset h=d/n.Motor and linear motor all have the characteristics of straight drive, the output of low speed heavy load.

Description

Motor stator, motor, linear motor stator electric and linear motor

Technical field

The utility model relates to motor fields, and in particular to a kind of motor stator, motor, linear motor stator electric and straight-line electric Machine.

Background technique

Currently, motor has asynchronous motor and two kinds of synchronous motor, motor stator is mostly rotated according to three-phase or multiphase Magnetic principles design, rotor then use permanent magnetism, the induction principles such as cage modle or magnetic resistance to realize.In actual use, if desired To low speed high torque output when, then need to increase reduction gearbox, or increase number of pole-pairs.

The shortcomings that increasing reduction gearbox is that volume is big, weight weight, reduces system effectiveness, causes the environmental noise at scene dirty Dye；And increase number of pole-pairs, in three-phase or multiphase, offline and wiring technical difficulty is increased, process costs are substantially Rise, and the upper limit of number of pole-pairs is strictly limited by structure size, in equal torque, the power needs of motor are substantially improved.

Utility model content

The first of the utility model is designed to provide the electricity that a kind of structure is simple, exports with low-speed big and directly drives Machine stator.

The second of the utility model is designed to provide that a kind of structure is simple, has low-speed big output efficiently and straight drives Motor.

The third of the utility model is designed to provide that a kind of structure is simple, has the output of low speed heavy load and efficiently straight drives Linear motor stator electric.

The 4th of the utility model is designed to provide that a kind of structure is simple, has the output of low speed heavy load and efficiently straight drives Linear motor.

For the first purpose for realizing the utility model, motor stator provided by the utility model includes n of coaxial arrangement Stator unit, n are greater than or equal to 2；Stator unit includes that stator core, winding and at least one hall device, winding are wrapped in On stator core, winding be powered when stator core circumferential position on formed m magnetic pole of the stator, two adjacent magnetic pole of the stator it It is intermediate polarity on the contrary, m be even number；Hall device is arranged on stator core and between two adjacent magnetic pole of the stator；It is adjacent Two stator units magnetic pole of the stator between there is machinery drift angle a, mechanical drift angle a=360/ (n × m) is spent；In stator unit Axis projection on, the magnetic pole of the stator of n stator unit is placed equidistant in the circumferential direction of stator unit.

By above scheme as it can be seen that since motor stator is coaxially formed by stacking by multiple stator units, pass through setting stator list Drift angle between member and the subdivision for realizing rotational angle, it is tired so as to avoid number of poles bring technology is increased on single stator core Difficulty reduces production cost；Using monophasic pulses if direct current supply and hall device is combined to change the positive and negative of pulse, realizes the thin of motor Point rotation, and then realize that the straight drive of motor and stable low speed and large torque export.

For the second purpose for realizing the utility model, motor provided by the utility model includes n motor of coaxial setting Unit, n are greater than or equal to 2；Each electric motor units include mutually matched rotor unit and stator unit, stator unit The number of rotor magnetic poles of magnetic pole of the stator and rotor unit is m, and m is even number；There is machine between two adjacent electric motor units Tool drift angle a, mechanical drift angle a=360/ (n × m) degree, on the axis projection of motor, multiple magnetic pole of the stator are uniformly arranged on motor Circumferential direction on, multiple rotor magnetic poles are uniformly arranged in the circumferential direction of motor；On rotor unit, between two adjacent rotor magnetic poles Polarity is opposite；On stator unit, two adjacent magnetic pole of the stator it is intermediate polarity opposite；Stator unit further includes at least one Hall Device, hall device are arranged between two adjacent magnetic pole of the stator.

By above scheme as it can be seen that motor stator realizes the thin of rotational angle by the drift angle between setting stator unit Point, increase number of poles bring technical difficulty on single stator core is avoided, production cost is reduced；It is supplied using monophasic pulses if direct current Electricity simultaneously combine hall device change pulse it is positive and negative, realize motor subdivision rotation, and then realize motor it is straight drive and it is stable Low speed and large torque output, electric machine structure is simple, can be transformed by existing motor stator and rotor, production cost has Effect reduces.

Further embodiment is that have machinery drift angle a, n rotor between the magnetic pole of the stator of two adjacent stator units Unit axially aligns setting.

Another further embodiment is that have machinery drift angle a, n between the rotor magnetic pole of two adjacent rotor units Stator unit axially aligns setting.

By above scheme as it can be seen that alternatively, mechanical drift angle, electricity is arranged between multiple rotor units on rotor Alignment setting is set between multiple stator units without drift angle, or on motor stator between multiple stator units on machine stator Mechanical drift angle is set, is mutually aligned between multiple rotor units without drift angle on rotor, the equal energy of both set-up modes Realization number of poles increases and calculates, processing is the simplest, improves production efficiency, reduction production cost.

Further embodiment is that stator unit includes stator core and winding, and winding is wrapped on stator core, and winding is logical M magnetic pole of the stator is formed when electric on the circumferential position of stator core；Stator core is overrided to form by multiple stator punchings, stator punching Piece include circular yoke portion and in yoke portion along multiple teeth of yoke portion circumferencial direction setting, the quantity of tooth is m × x, and x is big In or equal to 2；Winding includes multiple coils, winds a coil on each tooth；Under energized state, per continuous x coil shape At a magnetic pole of the stator.

Therefore magnetic pole of the stator is waited by the coil same polarity parallel connection in parallel on the identical adjacent multiple teeth of polarity It imitates, then effectively reduces torque pulsation at this time.

For the third purpose of utility model for realizing this law, linear motor stator electric provided by the utility model includes n stator Unit, n are greater than or equal to 2；Stator unit includes stator core, winding and multiple hall devices；Stator core and be wrapped in it is fixed Winding on sub- iron core, winding are wrapped on stator core, form linear systematic along the x axis on stator core when winding is powered M magnetic pole of the stator of arrangement, and spacing d is all had between two adjacent magnetic pole of the stator；N stator unit is arranged along the y axis Column setting, in the projection of Y direction, with the offset of X-direction between the magnetic pole of the stator of two adjacent stator units H, offset h=d/n, and multiple magnetic pole of the stator are equidistantly positioned along the x axis；Hall device setting two magnetic pole of the stator it Between, and multiple hall devices on same stator unit are placed equidistant with.

By above scheme as it can be seen that when an only column magnetic pole, the spacing of two adjacent magnetic pole of the stator is d, the subdivision of mover Forward travel distance unit is then d；And work as n column and be set side by side and have the magnetic pole of offset, it can will be moved in conjunction with the induction of hall device Sub- forward travel distance unit changes into d/n, and motor pole number is multiplied, guarantee motor will not step-out, payload is big, and has simultaneously There is light-weight, the small feature of inertia.

For the 4th purpose of utility model for realizing the utility model, linear motor provided by the utility model includes along Y-axis Direction n electric motor units arranged side by side, each electric motor units include mutually matched subunit and stator unit, stator The quantity of the magnetic pole of the stator of unit is m, and the mover number of magnetic poles of subunit is z；In stator unit, m magnetic pole of the stator It is arranged along the x axis, in subunit, z mover magnetic pole is arranged along the x axis；Two adjacent stator magnets on stator unit Great have a spacing d, and two adjacent mover magnetic poles have spacing d on subunit, and two adjacent electric motor units have X-axis side Upward offset h, offset h=d/n；In the projection of Y direction, multiple magnetic pole of the stator are equidistantly positioned along the x axis, Multiple mover magnetic poles are equidistantly positioned along the x axis；Hall device is arranged between two magnetic pole of the stator, each stator unit On, adjacent hall device is at most separated by z-1 magnetic pole of the stator.

By above scheme as it can be seen that n column are set side by side and the induction of the magnetic pole combination hall device with offset can will be moved Sub- forward travel distance unit changes into d/n, and motor pole number is multiplied, guarantee motor will not step-out, payload is big, and has simultaneously Have light-weight, the small feature of inertia, the structure of the linear motion actuator is simple, is transformed by existing linear motor, production cost has Effect reduces, and production efficiency effectively improves.

Further embodiment is, in the projection of Y direction, has between the magnetic pole of the stator of two adjacent stator units Offset h, alignment is arranged n subunit along the y axis.

Another further embodiment is, in the projection of Y direction, between the mover magnetic pole of two adjacent subunits With offset h, alignment is arranged n stator unit along the y axis.

Therefore offset is set between multiple subunits on electric mover, multiple stator lists on motor stator Alignment is arranged without offset between member, or offset, motor is arranged between multiple stator units on motor stator It is mutually aligned between multiple subunits without offset on son, both set-up modes are able to achieve number of poles and increase and count It calculates, process the simplest, raising production efficiency, reduction production cost.

Further embodiment is that stator unit includes stator core and winding, and winding is wrapped on stator core, and winding is logical M magnetic pole of the stator is formed when electric on the circumferential position of stator core；M × x protrusion arranged in a straight line is provided on stator core, X is greater than or equal to 2；Winding includes multiple coils, one coil of winding in each protrusion, a per continuous x under energized state Coil forms a magnetic pole of the stator.

Therefore magnetic pole of the stator it is in parallel by the coil same polarity in parallel in the identical adjacent multiple protrusions of polarity and It is equivalent to form, torque pulsation is then effectively reduced at this time.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of motor stator hidden parts component in the utility model motor first embodiment.

Fig. 2 is the structural schematic diagram of rotor in the utility model motor first embodiment.

Fig. 3 is the structural schematic diagram of motor stator hidden parts component in the utility model motor second embodiment.

Fig. 4 is the structural schematic diagram of rotor in the utility model motor second embodiment.

Fig. 5 is the structural schematic diagram of electric motor units in the utility model motor first embodiment.

Fig. 6 is the first elementary diagram of winding in the utility model motor first embodiment.

Fig. 7 is the second elementary diagram of winding in the utility model motor first embodiment.

Fig. 8 is the third elementary diagram of winding in the utility model motor first embodiment.

Fig. 9 is the first structure diagram of rotor unit in the utility model motor first embodiment.

Figure 10 is the second structural schematic diagram of rotor unit in the utility model motor first embodiment.

Figure 11 is the third structural schematic diagram of rotor unit in the utility model motor first embodiment.

Figure 12 is the 4th structural schematic diagram of rotor unit in the utility model motor first embodiment.

Figure 13 is the structural schematic diagram of the utility model linear motor first embodiment.

Figure 14 is the structural schematic diagram of the utility model linear motor second embodiment.

The following is a further explanation of the present invention with reference to the accompanying drawings and embodiments.

Specific embodiment

Motor first embodiment

Referring to Fig. 1 and Fig. 2, Fig. 1 be the utility model motor first embodiment in motor stator hide hall device and around The structural schematic diagram of group, Fig. 2 are the structural schematic diagram of rotor in the utility model motor first embodiment.The present embodiment Motor is coaxially formed by stacking by three electric motor units, and each electric motor units include mutually matched stator unit and rotor unit, Accordingly, motor stator 1 includes co-axially fixed three stator units, and rotor 2 includes co-axially fixed three mover lists Member.

It is the structural schematic diagram of electric motor units in the utility model motor first embodiment in conjunction with Fig. 5, Fig. 5.For convenient for pair The structure of motor stator 1 is illustrated, and the hall device and winding on electronics iron core are hidden in Fig. 1.Motor stator 1 includes fixed Subelement 10, stator unit 11 and stator unit 12, stator unit 10, stator unit 11 are identical with 12 structure of stator unit, with For stator unit 10, stator unit 10 includes stator core 100, winding 13 and a hall device 14, stator core 100 Be overrided to form by multiple stator punchings, stator punching include circular yoke portion 102 and in yoke portion along yoke portion circumferencial direction 12 teeth 101 being arranged form slot 103 between adjacent tooth；Winding 13 includes the coil being wrapped on each tooth 101, and every The winding direction of coil on a tooth 101 is identical.Hall device 14 is arranged on stator core 100 and is located at two adjacent teeth Between 101.Preferably, hall device 14 is arranged between the extending end of two teeth 101 to guarantee its actual induction.

In conjunction with Fig. 1, Fig. 2 and Fig. 5, motor is coaxially disposed by three electric motor units and is formed, and two adjacent motor lists It can be by the way that the drift angle in motor stator between stator unit and/or electricity be arranged with machinery drift angle a, mechanical drift angle a between member It realizes drift angle in machine rotor between rotor unit.And in motor first embodiment, stator unit 10, stator unit 11 and fixed Subelement 12 all has 12 teeth, has machinery drift angle a, tooth between the tooth 101 of stator unit 10 and the tooth 111 of stator unit 11 There is machinery drift angle a between 111 and the tooth 121 of stator unit 12.It is multiple teeth 101, tooth in the projection of motor stator axial direction 111 and tooth 121 projection uniformly and equidistantly in the circumferential direction of motor stator, mechanical drift angle a=360/ (n × m) degree, wherein n For the number of electric motor units, the i.e. number of stator unit, n=3；Wherein quantity of the m for tooth on stator unit, m=12, therefore can count Calculation obtains mechanical drift angle a=10 degree in the present embodiment.And accordingly, since motor stator has been realized in mechanical drift angle a, therefore In rotor, rotor unit 20, rotor unit 21 and rotor unit 22 are coaxially fixed in shaft 29, and in rotor On axis projection, the permanent magnet of the permanent magnet 201 of rotor unit 20, the permanent magnet 211 of rotor unit 21 and rotor unit 22 221 overlapped alignment are without drift angle.

It is the first elementary diagram of winding in the utility model motor first embodiment referring to Fig. 6, Fig. 6.In conjunction with Fig. 5, Winding 13 on stator unit 10 includes 12 coils being wrapped on 12 teeth 101, and circuit 137 is connect with winding 13 to realize The series connection of 12 coils, while after realizing energization there is opposite pole polarity between two neighboring coil.Circuit 137 from The first end of coil a1 accesses, and the second end of coil a1 is connected to the second end of coil a2, and the first end of coil a2 is connected to a1 First end, so recycle；Since coil a1 is identical with the direction of winding of coil a2, and circuit access sequence is on the contrary, therefore when electricity After road 137 is powered, 12 coils become a magnetic pole of the stator, and the magnetic pole of the stator that is formed of coil a1 and coil a2 are formed Then there is opposite pole polarity between magnetic pole of the stator.

It is the second elementary diagram of winding in the utility model motor first embodiment referring to Fig. 7, Fig. 7.Circuit 138 with Winding 13 connect, by coil a1, a3, a5, a7, a9 and a11 series connection and will coil a2, a4, a6, a8, a10 and a12 series connection after It is in parallel again.Circuit 137 is accessed from the first end of coil a1, and the second end of coil a1 is connected to the second end of coil a2, coil a2 First end be connected to the second end of circuit 137.When DC current is flowed into from the end A+ and flowed out from the end A-, it can equally make coil There is opposite pole polarity between the magnetic pole of the stator that the magnetic pole of the stator and coil a2 that a1 is formed are formed.

It is the third elementary diagram of winding in the utility model motor first embodiment referring to Fig. 8, Fig. 8.Circuit 139 with The connection of winding 13 makes 12 coils from parallel connection of coils.When DC current is flowed into from the end A+ and flowed out from the end A-, it can equally make coil a1 shape At magnetic pole of the stator and coil a2 formed magnetic pole of the stator between have opposite pole polarity.

In conjunction with Fig. 6 to Fig. 8, circuit 137, circuit 138 and circuit 139 can make winding 13 form 12 stator magnets when being powered Pole, and two adjacent magnetic pole of the stator is intermediate polarity opposite.The selection use of three kinds of circuits can be according to supply voltage height and line The back-emf height of winding is enclosed, the connection type between certain multiple coils is not limited to above three connection type, multiple coils Between can be used that whole series connection, grouping series connection be in parallel again or any ways such as whole parallel connections, as long as two adjacent coil poles Error-polarity connection.

Motor working method embodiment

In conjunction with Fig. 1, Fig. 2 and Fig. 5, motor working method is specifically described with motor first embodiment.Motor stator 1 On the coaxially connected and adjacent stator unit of three stator units tooth between there is machinery drift angle a, a to be 10 degree, with stator For unit 10, hall device 14 is provided on each stator unit between two adjacent teeth, hall device 14 is for controlling The direction of pulse direct current processed, even if hall device 14 often experiences Primary field pulse direct current and a direction change occurs. 12 permanent magnets 201, each 201 conduct of permanent magnet are uniformly fixed with by taking rotor unit 20 as an example, on the periphery of rotor unit 20 One rotor magnetic pole, two adjacent 201 polarity of permanent magnet are opposite.

When an only electric motor units, the working principle of electric motor units are as follows: winding 13, which accesses pulse direct current, makes winding 13 form 12 magnetic pole of the stator on stator unit 10, and two adjacent magnetic pole of the stator polarity are conversely, because rotor unit 20 Upper rotor part number of magnetic poles is identical as magnetic pole of the stator quantity, and adjacent two rotor magnetic pole polarity on the contrary, electromagnetic force effect Lower rotor part unit 20 rotates, and subsequent first permanent magnet 201 passes through hall device 14.Hall device 14 and first permanent magnet After 201 incude, DC pulse current direction changes, and magnetic pole of the stator changes, second 201 magnetic pole of permanent magnet and first 201 magnetic pole of permanent magnet is on the contrary, rotor unit 20 is still persistently rotated along former direction under the action of electromagnetic force, subsequent second permanent magnetism Body 201 passes through hall device 14, recycles according to this.Wherein, magnetic pole of the stator and rotor magnetic pole are 12, access pulse electricity every time The mechanical angle that circulation subelement 20 turns over is 30 degree.

And when two coaxially connected and adjacent electric motor units of three electric motor units have 10 degree of mechanical drift angle a, with For motor first embodiment, rotor unit 20, rotor unit 21, rotor unit 22 respectively with stator unit 10, stator unit 11, stator unit 12 cooperates, and incudes in the permanent magnet 201 on rotor unit 20 with the hall device on stator unit 10 Afterwards, rotor turns over 10 degree of mechanical angles again, at this time the permanent magnet 211 on rotor unit 21 and the Hall on stator unit 11 Device incudes；Permanent magnet 221 and stator unit 12 after rotor turns over 10 degree of mechanical angles again, on rotor unit 22 On hall device incude；Second permanent magnet after rotor turns over 10 degree of mechanical angles again, on rotor unit 20 After 201 incude with the hall device on stator unit 10, recycle according to this.

Motor provided by the utility model, which realizes, not to be needed mechanical reduction box and is increasing number of pole-pairs on stator unit In the case where realize low-speed big output, avoid step-out, at the same motor stator or rotor can be used it is existing Stator core and rotor core convert, and design limitation is less, difficulty of processing decline, and production cost is low；Winding 13 is collection Middle winding, end turn length is short, and copper loss is small and high-efficient, and winding is non-overlapping, and phase insulation is good, and coil is easily using automation Mechanical offline winding, is greatly reduced production cost.

Motor second embodiment

It is the knot of motor stator hidden parts component in the utility model motor second embodiment referring to Fig. 3 and Fig. 4, Fig. 3 Structure schematic diagram.Fig. 4 is the structural schematic diagram of rotor in the utility model motor second embodiment.Optionally, motor list Mechanical drift angle a between member can be realized only by the drift angle between rotor units multiple in rotor.In the axial direction of motor stator 3 In projection, the tooth 321 of the tooth 301 of stator unit 30, the tooth 311 of stator unit 31 and stator unit 32 it is overlapped alignment without With drift angle.On the axis projection of rotor 4, the permanent magnet 401 and the permanent magnet on rotor unit 41 of rotor unit 40 There is machinery drift angle a, the permanent magnet 421 and permanent magnet 411 on rotor unit 42 have machinery drift angle a, and multiple between 411 Permanent magnet 401, permanent magnet 411 and permanent magnet 421 are uniformly and equidistantly arranged in the circumferential direction of rotor.

Being multiplied for motor pole number equally can be achieved in the motor provided in second embodiment, and working principle is implemented with first Motor in example is identical, therefore does not repeat.Optionally, the mechanical drift angle a between two neighboring electric motor units is not only only electric Machine first embodiment and motor second embodiment two kinds of embodiments, can also set between every two adjacent stator units Set mechanical drift angle b and between every two adjacent rotor units be arranged machinery drift angle c, and the deflection direction of machinery drift angle c and The deflection of mechanical drift angle b is contrary, and the sum of mechanical drift angle c and machinery drift angle b are equal to machinery drift angle a.For example, motor It is made of three electric motor units, the mechanical drift angle b of 5 degree of setting between every two adjacent stator units, and the latter stator list Member is relative to previous stator unit along deflection clockwise；The mechanical drift angle of 5 degree of setting between per two adjacent subunits C, and the latter subunit deflects counterclockwise relative to previous subunit.

Referring to the first structure signal that Fig. 9 to Figure 12, Fig. 9 are rotor unit in the utility model motor first embodiment Figure.Figure 10 is the second structural schematic diagram of rotor unit in the utility model motor first embodiment.Figure 11 is the utility model The third structural schematic diagram of rotor unit in motor first embodiment.Figure 12 is rotor in the utility model motor first embodiment 4th structural schematic diagram of unit.Other structures also can be used other than raised type permanent magnet can be used in rotor unit.Rotor list Member 23 is surface plug-in type rotor unit, and four fixations of permanent magnet 232 are inlaid within the peripheral surface of rotor core 231.Turn Subelement 24 is built-in radial formula rotor, and four fixations of permanent magnet 242 are built in rotor core 241, and permanent magnet 242 Two magnetic pole being arranged radially along rotor core 241.Rotor unit 25 is built-in tangential formula rotor, and four permanent magnets 252 are fixed It is built in rotor core 251, and two magnetic poles of permanent magnet 252 are along the tangentially-arranged of rotor core 251.Rotor unit 26 is Built-in mixed rotor, four permanent magnets 262 and four fixations of permanent magnet 263 are built in rotor core 261, permanent magnet 262 Two magnetic poles along the tangentially-arranged of rotor core 261, two magnetic pole being arranged radially along rotor core 261 of permanent magnet 263. Optionally, permanent magnet rotor not only can be used in rotor unit, and salient pole reluctance type rotor or non-salient pole magnetic also can be used in rotor unit Resistive rotor.

Optionally, the quantity of tooth is m × x on stator unit, and x is greater than or equal to 2, and is wound with one on each tooth A coil, then the quantity of coil is also m × x, and in electric current access, the magnetic pole unit that continuous x coil is formed is all had Identical polarity, often X magnetic pole unit on continuous x coil is equivalent forms a magnetic pole of the stator, therefore on stator unit The magnetic pole of the stator quantity having still is m.And the mover number of magnetic poles on rotor unit is m, the quantity of mover magnetic pole with The quantity of magnetic pole of the stator is equal.

Linear motor first embodiment

It is the structural schematic diagram of linear motor first embodiment referring to Figure 13, Figure 13.The working principle of linear motor with it is upper The working principle for stating motor embodiment is identical.Linear motor includes 2 electric motor units arranged side by side along the y axis, and first Electric motor units include mutually matched stator unit 61 and subunit 51, and second electric motor units includes mutually matched stator Unit 62 and subunit 52.It can pass through between two linear motor units with the offset h in X-direction, offset h The offset being arranged between the permanent magnet of the offset between the protrusion of different stator units and/or different rotor unit is realized.

Linear motor includes mutually matched motor stator 6 and electric mover 5, and motor stator 6 is that the utility model mentions The linear motor stator electric of confession, motor stator 6 include stator unit 61 and stator unit 62, stator unit 61 and stator unit 62 Include stator core, winding and hall device, m protrusion of straight line rehearsal along the x axis is provided on stator core, and fixed Every 3 protrusion one hall devices of setting on subelement 61 and stator unit 62.And winding then includes multiple coils, each A coil is wound in protrusion.The stator core 63 of stator unit 61 and the stator core 64 of stator unit 62 are integrally formed, fixed Two neighboring raised 611 with the spacing d in X-direction on subelement 61, and two neighboring raised 621 have on stator unit 62 Spacing d in X-direction, and in the projection of Y direction, with the offset of X axis direction between protrusion 611 and protrusion 621 H, offset h=d/n, wherein n is the number of electric motor units on linear motor, n=2 in the present embodiment.

Electric mover 5 includes the subunit 51 and subunit 52 being arranged along the y axis, is set on subunit 51 Be equipped with 4 permanent magnets 510 being placed equidistant with along the x axis, two adjacent permanent magnets 510 it is intermediate polarity on the contrary, multiple permanent magnetism Body 510 includes the pole N permanent magnet 511 and the pole S permanent magnet 512, and multiple permanent magnets 511 and multiple permanent magnets 512 staggeredly intert setting, Subunit 52 equally includes multiple permanent magnets 520 of lamps and lanterns setting along the x axis, pole between two adjacent permanent magnets 520 Property is opposite.Multiple permanent magnets 520 on multiple permanent magnets 510 and subunit 52 on subunit 51 are right in Y axis direction Neat setting, and in the projection of Y direction, there is no the offset in X-direction between permanent magnet 511 and permanent magnet 512 and weighs It is folded.Preferably, the mover iron core of the mover iron core of subunit 51 and subunit 52 is integrally formed.

Each permanent magnet is a mover magnetic pole on electric mover 5, and motor stator 6 is passed through DC pulse current or single-phase After pulse current, the coil on each raised 611 and each raised 621 is respectively formed an individual magnetic pole of the stator, and same In stator unit, two adjacent magnetic poles it is intermediate polarity on the contrary, electric mover 5 is relative to motor stator under the action of electromagnetic force 6 move along a straight line along the x axis, the magnetic pole with rear projection 611 by hall device 619 and incuding, stator unit 61 it is straight It flows pulse current direction to change, motor stator 6 continues to move under the action of electromagnetic force, with the magnetic pole of rear projection 621 by suddenly That device 629 simultaneously incudes, and the DC pulse current direction of stator unit 62 changes, effect of the motor stator 6 in electromagnetic force Under continue to move to, recycle according to this.

By taking subunit 51 and stator unit 61 as an example, since subunit 51 includes 4 permanent magnets 510, and mover list The movement of member 51 is linear motion, after subunit 51 is mobile and crosses first hall device 619 not yet with another suddenly When your device 619 sends induction, subunit 51 is stop motion, therefore on stator unit 61, often it is separated by 3 magnetic pole of the stator then Must be provided with a hall device 619, with guarantee subunit 51 while crossing upper hall device 619 can quickly with The next induction of hall device 619 cooperation, thus it is regular, when mover number of magnetic poles is z on subunit, corresponding stator On unit, being often separated by z-1 magnetic pole of the stator then must be provided with a hall device, also can be set on certain subunit more Hall device.Preferably, a hall device is respectively provided with to guarantee subunit row in the front-end and back-end of stator unit The integrality of journey.

Linear motor second embodiment

It is the structural schematic diagram of the utility model linear motor second embodiment referring to Figure 14, Figure 14.The present embodiment provides Linear motor it is identical as the linear motor working principle that a upper embodiment provides, equally can between two adjacent electric motor units With offset h, and the difference lies in that in the projection of Y direction, in motor stator 8,811 He of protrusion of stator unit 81 The protrusion 821 of stator unit 82 not the offset of X-direction and be overlapped, and in electric mover 7, the permanent magnet of subunit 71 711 and subunit 72 in permanent magnet 721 between with X-direction offset h, offset h=d/n, wherein n is straight The number of electric motor units on line motor, n=2 in the present embodiment.

Optionally, the offset h between two neighboring electric motor units not only only have linear motor first embodiment and Offset I can also be arranged in linear motor second embodiment two kinds of embodiments between every two adjacent stator units And offset J is set between every two adjacent rotor units, and the offset direction of offset I and offset J is on the contrary, offset It measures the sum of numerical value of I and offset J and is equal to offset h.

For example, linear motor is made of a electric motor units, offset I is set between every two adjacent stator units, and The latter stator unit is relative to previous stator unit along X-axis forward migration；It is arranged between per two adjacent subunits Offset J, and the latter subunit relative to previous subunit along X-axis reserve migration.

Finally it is emphasized that the above is only the preferred embodiment of the present invention, it is not limited to this reality With novel, for those skilled in the art, the utility model can have various change and change, all in the utility model Spirit and principle within, any modification, equivalent substitution, improvement and etc. done should be included in the protection model of the utility model Within enclosing.

Claims (10)

1. motor stator characterized by comprising

N stator unit of coaxial arrangement, n are greater than or equal to 2；

The stator unit includes stator core, winding and at least one hall device, and the winding is wrapped in the stator iron On core, the winding forms m magnetic pole of the stator, two adjacent stators on the circumferential position of the stator core when being powered Magnetic pole intermediate polarity is on the contrary, m is even number；

The hall device is arranged on the stator core and between two adjacent magnetic pole of the stator；

There is machinery drift angle a, the machinery drift angle a=360/ between the magnetic pole of the stator of two adjacent stator units (n × m) degree；

On the axis projection of the stator unit, the magnetic pole of the stator of the n stator units is in the motor stator It is placed equidistant in circumferential direction.

2. motor characterized by comprising

N electric motor units of coaxial setting, n are greater than or equal to 2；

Each electric motor units include mutually matched rotor unit and stator unit, the magnetic pole of the stator of the stator unit Number of rotor magnetic poles with the rotor unit is m, and m is even number；

There is machinery drift angle a, machinery drift angle a=360/ (n × m) degree, in institute between two adjacent electric motor units It states on the axis projection of motor, multiple magnetic pole of the stator are uniformly arranged in the circumferential direction of the motor, multiple rotor magnetic Pole is uniformly arranged in the circumferential direction of the motor；

On the rotor unit, two adjacent rotor magnetic poles it is intermediate polarity opposite；On the stator unit, adjacent two A magnetic pole of the stator it is intermediate polarity opposite；

The stator unit further includes at least one hall device, and two adjacent stator magnets are arranged in the hall device Between pole.

3. motor according to claim 2, it is characterised in that:

There are machinery the drift angle a, the n rotor units between the magnetic pole of the stator of two adjacent stator units Axially align setting.

4. motor according to claim 2, it is characterised in that:

There are machinery the drift angle a, the n stator units between the rotor magnetic pole of two adjacent rotor units Axially align setting.

5. according to the described in any item motors of claim 2 to 4, it is characterised in that:

The stator unit includes stator core and winding, and the winding is wrapped on the stator core, and the winding is powered The m magnetic pole of the stator are formed on the circumferential position of Shi Suoshu stator core；

The stator core is overrided to form by multiple stator punchings, and the stator punching includes circular yoke portion and described Form slot along multiple teeth of yoke portion circumferencial direction setting in yoke portion, between the adjacent tooth, the quantity of the tooth be m × X, x is greater than or equal to 2；

The winding includes multiple coils, and a coil is wound on each tooth；It is a per continuous x under energized state The coil forms a magnetic pole of the stator.

6. linear motor stator electric characterized by comprising

N stator unit, n are greater than or equal to 2；

The stator unit includes stator core, winding and multiple hall devices；

Stator core and the winding being wrapped on the stator core, the winding are wrapped on the stator core, it is described around Group forms m magnetic pole of the stator of linear systematic arrangement along the x axis on the stator core when being powered, and described in adjacent two Spacing d is all had between magnetic pole of the stator；

The n stator units are arranged along the y axis, in the projection of Y direction, two adjacent stator units The magnetic pole of the stator between offset h, the offset h=d/n with X-direction, and multiple magnetic pole of the stator are along X Axis direction is equidistantly positioned；

The hall device is arranged between two magnetic pole of the stator, and multiple Halls on the same stator unit Device is placed equidistant with.

7. linear motor characterized by comprising

N electric motor units arranged side by side along the y axis, each electric motor units include mutually matched subunit with Stator unit, the quantity of the magnetic pole of the stator of the stator unit are m, and the mover number of magnetic poles of the subunit is z；

In the stator unit, the m magnetic pole of the stator are arranged along the x axis, in the subunit, the z mover magnetic Pole is arranged along the x axis；

Two adjacent magnetic pole of the stator have spacing d on the stator unit, two adjacent institutes on the subunit Mover magnetic pole is stated with spacing d, two adjacent electric motor units have the offset h, the offset h in X-direction =d/n；

In the projection of Y direction, multiple magnetic pole of the stator are equidistantly positioned along the x axis, and multiple mover magnetic poles are along X Axis direction is equidistantly positioned；

Hall device is arranged between described two magnetic pole of the stator, on each stator unit, the adjacent Hall Device is at most separated by the z-1 magnetic pole of the stator.

8. linear motor according to claim 7, it is characterised in that:

In the projection of Y direction, there is the offset between the magnetic pole of the stator of two adjacent stator units Alignment is arranged h, the n subunits along the y axis.

9. linear motor according to claim 7, it is characterised in that:

In the projection of Y direction, there is the offset between the mover magnetic pole of two adjacent subunits Alignment is arranged h, the n stator units along the y axis.

10. linear motor according to any one of claims 7 to 9, it is characterised in that:

The stator unit includes stator core and winding, and the winding is wrapped on the stator core, and the winding is powered The m magnetic pole of the stator are formed on the circumferential position of Shi Suoshu stator core；

M × x protrusion arranged in a straight line is provided on the stator core, x is greater than or equal to 2；

The winding includes multiple coils, one coil of winding in each protrusion, under energized state, per continuous x A coil forms a magnetic pole of the stator.