CN209344954U - A kind of micro magnetic permanent synchronization motor with position limiting structure - Google Patents

Abstract

The utility model discloses a kind of micro magnetic permanent synchronization motors with position limiting structure, including stator and rotor, stator includes stator cage, iron core and the stator winding being wrapped on iron core, and rotor includes the shaft that rotor casing, magnet ring and one end are sleeved among rotor casing；Rotor casing is set in the side periphery of stator cage, and magnet ring is set to outer diameter, and the other end of shaft runs through set on the center of stator cage；The inner sleeve of rotor casing is equipped with locating part, the periphery of the upper and lower surfaces of locating part is respectively equipped with first gear button and second gear button, it is equipped with the first stop section closed with first gear snap fit in rotor casing, is equipped with the second stop section closed with second gear snap fit on the inside of stator cage.The utility model achievees the purpose that limit by the way that locating part is arranged inside motor, to solve the problems, such as that installing locating part in outside motor causes volume excessive, has the characteristics that compact-sized, small in size, low in cost and installation is easy to operate.

Description

A kind of micro magnetic permanent synchronization motor with position limiting structure

Technical field

The utility model belongs to technical field of motors, and in particular to a kind of Miniature permanent magnet with position limiting structure synchronizes electricity Machine.

Background technique

Currently, with the development of the new permanent-magnet material and electric machines control technology such as neodymium iron boron, motor driven is increasingly had more Now on various occasions in, brushless motor replaces traditional mechanical commutation using electronic commutation, has that reliable performance, noise be small, mill The features such as small, high-efficient is damaged, is increasingly approved by user, one of the driving method of industrial mainstream is gradually become.

The main component that machine shaft is exported frequently as torque, the main shaft of output torque need under specific occasion demand Its scope of activities is limited, but universal type permanent magnet synchronous motor often needs to install locating part in outside, causes volume excessive, outside The limiting device installation trouble and cost set are relatively high, if in some specific occasions limited by space size in use, will Not the problem of appearance is not installed, to limit the scope of application of universal type permanent magnet synchronous motor.

Permanent magnet synchronous motor often needs to detect the position of rotor when in use, and then controls permanent magnet synchronous motor Working condition；Common mode is that the position of rotor is detected with magnetism encoder, but in existing permanent magnet synchronous motor It is inconvenient that reaction magnetic ring for connecting with magnetism encoder is installed.

Utility model content

The utility model aim is to overcome existing technological deficiency, provides a kind of Miniature permanent magnet with position limiting structure Synchronous motor achievees the purpose that limit by the way that locating part is arranged inside motor, limits to solve to install in outside motor The problem that part causes volume excessive has the characteristics that compact-sized, small in size, low in cost and installation is easy to operate.

In order to solve the above-mentioned technical problem, the utility model provides a kind of Miniature permanent magnet with position limiting structure and synchronizes electricity Machine, including stator and rotor, the stator include stator cage, the iron core being sleeved on the inside of stator cage and are wrapped in iron core On stator winding, the rotor includes that rotor casing, the magnet ring being sleeved on rotor internal side of shell wall and one end are sleeved on Shaft among rotor casing；The rotor casing is set in the side periphery of the stator cage, and the magnet ring is set to institute Outer diameter is stated, the other end of the shaft runs through set on the center of the stator cage；It is arranged on the inside of the rotor casing Finite place piece, the periphery of the upper and lower surfaces of the locating part are respectively equipped with first gear button and second gear button, the rotor casing Interior be equipped with equipped with the first stop section closed with the first gear snap fit, on the inside of the stator cage is closed with the second gear snap fit Second stop section.

Further, bearing is equipped between the shaft and the stator cage.

Further, the limiting gasket of dish, the side of the limiting gasket and the rotor are arranged in the shaft Casing and locating part abut, and the other side is abutted with the bearing.

Further, the side periphery of the limiting gasket be equipped with axial raised pointed nose, the pointed nose with it is described Locating part abuts.

Further, the mounting base of protrusion is equipped among the inside of the stator cage, the iron core sleeve is loaded on the peace It fills on seat, the bearing is set in the mounting base, and second stop section is set to the mounting base top；The rotor casing Inside among be equipped with the fixing seat of protrusion, the locating part is set in the fixing seat, and first stop section is set to institute State fixing seat periphery.

Further, one end end periphery of the shaft is equipped with radially raised land, the rotor casing it is outer The catching step cooperated with the land is equipped among side；The other end of the shaft sequentially passes through rotor casing and stator cage Centre and protrude from the end face outside of the stator cage.

Further, the shaft for protruding from the stator cage is equipped with card slot, is set with circlip on the card slot, described Washer is equipped between circlip and the bearing.

Further, the induction magnetic being arranged in the shaft of the stator cage for connecting with magnetism encoder is protruded from Ring.

Further, in the shaft at the contact portion of the rotor casing be equipped with groove portion.

Further, the wiring board being electrically connected with the stator winding is additionally provided on the inside of the stator cage.

Further, the shaft is hollow rotating shaft.

The utility model has the following beneficial effects:

The utility model achievees the purpose that limit by the way that locating part is arranged inside motor, to solve in existing in electricity The problem that installation locating part causes volume excessive outside machine has compact-sized, small in size, low in cost and installation easy to operate The characteristics of；And by first gear button on locating part and second gear deduction of points not with the first block on rotor casing and stator cage Portion and the cooperation of the second stop section, form the structure of rotary stopper twice makes while realization limits rotor rotating range The rotating range of rotor exceeds 360 degree, and specific rotating range (i.e. rotation angle) is 720 degree and subtracts second gear button and second Both stop sections add up corresponding central angle, expand the scope of application of the motor；Also pass through the limit of one butterfly of setting Position washer can reduce the contact area between rotor and stator and reduce axial fit clearance, thus reducing the two contact It while frictional force between face, can prevent rotor and stator from axially engaging between the two too loose, avoid the occurrence of Caton and part hair Raw the phenomenon that colliding energetically, solves the problems, such as smoothness, quietness and reliability in rotation；The utility model structure transfer The rotating range of son can also modify the size of both second gear button and second stop section, to change according to our actual demands Become central angle size corresponding to the two, reaches the restriction effect for different rotary angle.

Detailed description of the invention

Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application, It does not constitute improper limits to the present invention, in the accompanying drawings:

Fig. 1 is the schematic diagram of micro magnetic permanent synchronization motor in embodiment；

Fig. 2 is the exploded view of micro magnetic permanent synchronization motor in embodiment；

Fig. 3 is the bottom view of micro magnetic permanent synchronization motor in embodiment；

Fig. 4 is the cross-sectional view of micro magnetic permanent synchronization motor in embodiment；

Fig. 5 is the schematic diagram of embodiment transfer handset shell；

Fig. 6 is the schematic diagram of limiting gasket in embodiment；

Fig. 7 is the schematic internal view in embodiment after the windowing of micro magnetic permanent synchronization motor side.

Specific embodiment

In order to more fully understand the technology contents of the utility model, below in conjunction with attached drawing and specific embodiment to this Utility model is described further and illustrates.

Embodiment

As shown in Figures 1 to 6, with the micro magnetic permanent synchronization motor of position limiting structure, including stator shown in the present embodiment And rotor, stator include stator cage 1, the iron core being sleeved in stator cage 12 and the stator winding being wrapped on iron core 2 (not shown), rotor include rotor casing 3, the magnet ring 4 being sleeved on 3 inner sidewall of rotor casing and one end through suit Shaft 5 among rotor casing 3；Rotor casing 3 is set in the side periphery of stator cage 1, makes magnet ring 4 at certain intervals Set on 2 periphery of iron core, the other end of shaft 5 runs through set on the center of stator cage 3, and between shaft 4 and stator cage 3 successively If there are two bearing 6, thus by stator together with rotor Moveable assembled, and rotor can relative stator rotated；Rotor machine The inside roof intermediate sleeve of shell 3 is equipped with locating part 7, and the periphery of the upper and lower surfaces of locating part 7 is respectively equipped with 71 He of first gear button Second gear button 72, rotor casing 3 are equipped with the first stop section 31 for cooperate with first gear button 71, and stator cage 1 is equipped with the The second stop section 11 that second gear button 72 cooperates；In actual application, the upper and lower position of first gear button 71 and second gear button 72 It corresponding can be arranged, can also be not correspond to be arranged, and after assembling, according to actual needs, make the first stop section 31 and second gear Stop 11 is respectively arranged on the not ipsilateral (as shown in Figure 7) of first gear button 71 and second gear button 72, i.e., when the first stop section is set to the When on the right side of one gear button and abutting, the second stop section will be set to left side and the abutting of second gear button, when the first stop section is set to first When on the left of gear button and abutting, the second stop section will be set to right side and the abutting of second gear button, so when the rotor rotates, one is Locating part can first be will drive to rotate together, supported after the second gear button on locating part rotates and in direction of rotation and the second stop section When connecing, locating part is remained stationary, and at this moment rotor will continue to rotate, until the first stop section on rotor casing in a rotational direction It stops operating when being abutted with first gear button, to realize the position-limiting action to rotor rotating range；Another kind is that rotor first rotates One circle, the first stop section being arranged on rotor casing drives locating part after abutting again with first gear button in a rotational direction again Continue to rotate together, when on locating part second gear button rotation after and after direction of rotation is abutted with the second stop section, rotor with Locating part is remained stationary by block；The position-limiting action to rotor rotating range is realized by the structure of rotary stopper twice, and Make the rotating range of rotor beyond 360 degree, specific rotating range (i.e. rotation angle) is 720 degree and subtracts second gear button and second Both stop sections add up corresponding central angle；Above structure also has a benefit, and the rotating range of rotor can also basis Our actual demands modify the size of both second gear button and second stop section, to change central angle corresponding to the two Size reaches the restriction effect for different rotary angle.

After assembling, both rotor and the stator precision when axially engaging fastening are easy to appear asking for difficult grasp to above structure Topic, if the two axially engage it is too tight, will cause contact surface friction after rotor is rotated by 360 ° because of the two it is big caused by Caton phenomenon, If the two axially engages too loose, and when will cause rotor rotation, it is easy between internal part to be collided energetically and issue sound, and It is easy to cause inner body to damage, to influence smoothness, quietness and the integrity problem when micromotor rotation；For upper Problem is stated, the limiting gasket 8 of dish is arranged in shaft 5, the end of diameter a small side end face and bearing 6 in limiting gasket 8 Face abuts；The big side end face of diameter is abutted with rotor casing 3 in limiting gasket 8, and in the side periphery of limiting gasket 8 Equipped with along axial raised pointed nose 81, pointed nose 81 is abutted with the end face of locating part 7；By the way that the limiting gasket of butterfly is arranged, The contact area between rotor and stator can be reduced, to reduce the frictional force between the two contact surface, it is existing to avoid the occurrence of Caton As solving the problems, such as that the smoothness in rotation, the limiting gasket also act as the effect for carrying out axially position with bearing fit；And it is logical Crossing pointed nose and locating part cooperation keeps complete machine structure more compact, reduces axial fit clearance, the part inside motor is avoided to occur It collides energetically and issues sound and problem easy to damage.

Specifically, being equipped with the mounting base 12 of protrusion among the inside of stator cage 1, iron core 2 is set in the upper of mounting base 12 End, two intervals of bearing 6 are set in mounting base 12, and the second stop section 11 is set to 12 top of mounting base, and is located at second gear button It is buckle-shaped at Stop structure with second gear in rotating path；The fixing seat 32 of protrusion is equipped among the inside roof of rotor casing 3, Locating part 7 is set in 32 lower end of fixing seat, and the first stop section 31 is set to 32 periphery of fixing seat, and is located at the rotary road of first gear button It is buckle-shaped at Stop structure with first gear on diameter.

Specifically, the upper end end periphery of shaft 5 is equipped with radially raised land 51, the end face outside of rotor casing 3 Centre is equipped with the catching step 33 cooperated with land 51；The lower end of shaft 5 sequentially passes through downwards the fixing seat 32 on rotor casing 3 The end face outside of stator cage 3 is protruded from behind 6 centre of bearing on intermediate and stator cage 1；And protruding from stator cage Shaft 5 is equipped with card slot 52, is set with circlip 53 on card slot 52, to fix shaft by circlip, prevents shaft It slides axially, and then makes rotor together with stator two parts Moveable assembled；And between circlip 53 and bearing 6 be equipped with one or Multiple washers 54 keep complete machine structure more compact for reducing axially mounted gap with bearing and circlip cooperation.

It is additionally provided on the outside of the shaft 5 of stator cage specifically, protruding from for connecting with external magnetism encoder Reaction magnetic ring 9, the reaction magnetic ring 9 can directly adsorb on circlip 53, easy disassembly；The magnetic generated when being rotated according to reaction magnetic ring Field variation provides the location information (i.e. rotation angle) of rotor to magnetism encoder.

Prolong equipped with several along axial direction specifically, being circumferentially spaced apart at 5 upper end of shaft and the contact portion of rotor casing 3 The groove stretched, for increasing the fastening frictional force between shaft and rotor casing, prevents rotor casing to form groove portion 55 There is a phenomenon where dally.

Specifically, being additionally provided with the wiring board 10 being electrically connected with stator winding in the inside of stator cage 1, and in stator cage Lateral surface be equipped with the three phase connection 13 that connect with the wiring board 10.

Among the above, after the stator winding on iron core connects external power supply, stator winding is made to form rotating excitation field, rotor is in axis It holds to be generated under support by stator field reciprocation and rotate and by shaft output torque.

In the other embodiments of the utility model, shaft is hollow rotating shaft, facilitates cabling, makes electric wire can be directly from motor Centre passes through.

In the other embodiments of the utility model, shaft is made of stainless steel, it is ensured that its resistance to environmental reliability；Turn Handset shell and stator cage are aluminium, can reduce weight；Magnet ring is permanent magnet；Locating part, limiting gasket and washer use brass It is made, there is preferable ductility.

Technical solution provided by the utility model embodiment is described in detail above, it is used herein specifically A example is expounded the principle and embodiment of the utility model embodiment, and the explanation of above embodiments is only applicable to help Assistant solves the principle of the utility model embodiment；At the same time, for those skilled in the art is implemented according to the utility model Example, there will be changes in terms of specific embodiments and scope of application, in conclusion the content of the present specification should not be construed as Limitations of the present invention.

Claims (10)

1. a kind of micro magnetic permanent synchronization motor with position limiting structure, including stator and rotor, which is characterized in that the stator packet Include stator cage, the iron core being sleeved on the inside of stator cage and the stator winding being wrapped on iron core, the rotor include turning Handset shell, the magnet ring being sleeved on rotor internal side of shell wall and one end are sleeved on the shaft among rotor casing；The rotor Casing is set in the side periphery of the stator cage, and the magnet ring is set to the outer diameter, the other end of the shaft Through the center for being set to the stator cage；The inner sleeve of the rotor casing is equipped with locating part, and up and down the two of the locating part The periphery on surface is respectively equipped with first gear button and second gear button, and the closed with the first gear snap fit is equipped in the rotor casing One stop section, the stator cage inside are equipped with the second stop section closed with the second gear snap fit.

2. as described in claim 1 with the micro magnetic permanent synchronization motor of position limiting structure, which is characterized in that the shaft and institute It states and is equipped with bearing between stator cage.

3. as claimed in claim 2 with the micro magnetic permanent synchronization motor of position limiting structure, which is characterized in that covered in the shaft Limiting gasket equipped with dish, the side of the limiting gasket abuts with the rotor casing and locating part, the other side with it is described Bearing abuts.

4. as claimed in claim 3 with the micro magnetic permanent synchronization motor of position limiting structure, which is characterized in that the limiting gasket Side periphery be equipped with axial raised pointed nose, the pointed nose abuts with the locating part.

5. as claimed in claim 4 with the micro magnetic permanent synchronization motor of position limiting structure, which is characterized in that the stator cage Inside among be equipped with the mounting base of protrusion, for the iron core sleeve loaded in the mounting base, the bearing is set to the mounting base Interior, second stop section is set to the mounting base top；The fixing seat of protrusion, institute are equipped among the inside of the rotor casing It states locating part to be set in the fixing seat, first stop section is set to the fixing seat periphery.

6. as claimed in claim 5 with the micro magnetic permanent synchronization motor of position limiting structure, which is characterized in that the one of the shaft It holds end periphery to be equipped with radially raised land, is equipped with the backstop cooperated with the land among the outside of the rotor casing Step；The other end of the shaft sequentially passes through the centre of rotor casing and stator cage and protrudes from the outer of the stator cage Side end face.

7. as claimed in claim 6 with the micro magnetic permanent synchronization motor of position limiting structure, which is characterized in that it is described fixed to protrude from The shaft of handset shell is equipped with card slot, is set with circlip on the card slot, and washer is equipped between the circlip and the bearing.

8. as claimed in claim 7 with the micro magnetic permanent synchronization motor of position limiting structure, which is characterized in that it is described fixed to protrude from The reaction magnetic ring for connecting with magnetism encoder is arranged in the shaft of handset shell.

9. such as the described in any item micro magnetic permanent synchronization motors with position limiting structure of claim 1-8, which is characterized in that described In shaft at the contact portion of the rotor casing be equipped with groove portion.

10. as claimed in claim 9 with the micro magnetic permanent synchronization motor of position limiting structure, which is characterized in that the stator The wiring board being electrically connected with the stator winding is additionally provided on the inside of shell；The shaft is hollow rotating shaft.