CN201733147U - Limited angle torque motor - Google Patents

Limited angle torque motor Download PDF

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Publication number
CN201733147U
CN201733147U CN2010202829011U CN201020282901U CN201733147U CN 201733147 U CN201733147 U CN 201733147U CN 2010202829011 U CN2010202829011 U CN 2010202829011U CN 201020282901 U CN201020282901 U CN 201020282901U CN 201733147 U CN201733147 U CN 201733147U
Authority
CN
China
Prior art keywords
rotor
stator
permanent magnet
core
stator core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010202829011U
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Chinese (zh)
Inventor
赵飞
孙江
陈强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LINQUAN MOTOR FACTORY CHINA JIANGNAN SPACE GROUP
Original Assignee
LINQUAN MOTOR FACTORY CHINA JIANGNAN SPACE GROUP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LINQUAN MOTOR FACTORY CHINA JIANGNAN SPACE GROUP filed Critical LINQUAN MOTOR FACTORY CHINA JIANGNAN SPACE GROUP
Priority to CN2010202829011U priority Critical patent/CN201733147U/en
Application granted granted Critical
Publication of CN201733147U publication Critical patent/CN201733147U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a limited angle torque motor which comprises a stator component and a rotor component, wherein the stator component comprises two semicircular-tile shaped stator iron-core, two permanent magnet blocks and a stator winding; two ends of each semicircular-tile shaped stator iron-core are respectively bonded with the permanent magnet blocks to form a whole in a bonded way, thereby being in a cylinder shape; a part of each permanent magnet block protrudes from the surface of an inner circular arc of the stator iron-cores; the stator winding is formed by two groups of centralized wound coils wound in different directions and connected in series; the rotor component comprises a rotor iron-core, a rotor neck bush and a rotating shaft; the rotor neck bush is mounted in a through hole in a interference fit way; the rotating shaft is mounted in the rotor neck bush and connected with the rotor neck bush to form a whole; and the rotor component is mounted in the stator component. The limited angle torque motor has the characteristics of high reliability, small volume, light weight, good temperature compensation characteristic and the like, and is particularly suitable for application situations requiring small volume and high output torque.

Description

A kind of limited angle torque motor
Technical field
The utility model relates to a kind of limited angle torque motor, belongs to the finite angle technical field of motors.
Background technology
At present, the stator module of common finite angle motor mainly is made up of the unitary stator iron core and the stator winding of drum, the general mode of inlaying that adopts of its stator winding is embedded in the teeth groove of stator core, or the mode that adopts inside and outside coiling with the stator winding coil winding on all-in-one-piece stator core, inserted stator module must be on all-in-one-piece stator core the tooth punching groove, and then coil windings is embedded in the teeth groove, the stator module of this structure not only exists complex structure, the cost of manufacture height, and make time-consuming shortcoming, but also it is big to exist teeth groove moment, the problem that efficient is lower; And the mode that adopts inside and outside coiling is wound on technical scheme on the all-in-one-piece stator core with coil windings, most of coil of its winding coil is the outside that is in stator core institute close range, the utilance of coil is low, and the big requirement of air gap causes increasing shortcomings such as manufacturing cost more greatly.Therefore existing this technical scheme exist that volume is big, rotating torque is little, problems such as inefficiency and cost of manufacture height.So the manufacturing technology of existing limited angle torque motor still is not ideal enough, the motor volume that is difficult to meet the demands is little and output torque requires the demand of bigger application scenario.
Summary of the invention
The purpose of this utility model is, provides the limited angle torque motor that a kind of operating efficiency is higher, simple in structure, making is easy, cost of manufacture is lower, volume is less, output torque is bigger, to overcome the deficiencies in the prior art.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of limited angle torque motor of the present utility model comprises stator module and rotor assembly two parts, and described stator module comprises by the stator core of two semicircle watt shapes, two permanent magnet blocks and stator winding and forming; The two ends of the stator core of two semicircle watt shapes are bonded as one by bonding mode and permanent magnet blocks respectively and form a cylindrical shape, and the part of permanent magnet blocks protrudes from the interior arc-shaped surface of stator core, stator winding is concentrated coilings by two groups and around being composed in series to opposite coil, and two groups of coils of stator winding are installed in the cylindrical shape that the stator core of two semicircle watt shapes forms respectively and are enclosed within respectively on the projection of two permanent magnet blocks; Rotor assembly is made up of rotor core, rotor neck bush and rotating shaft, axis part at rotor core is provided with through hole, the rotor neck bush is installed in the through hole by interference fit, and rotating shaft is installed in the rotor neck bush and with the rotor neck bush and connects as one, and rotor assembly is installed in the stator module.
The cross sectional shape of above-mentioned rotor core is circular and two Φ word shapes that rectangle is combined into, and the ragged edge of two rectangles is the circular arc limit.
Two ends at the stator core of above-mentioned semicircle watt shape all are respectively equipped with pole shoe, pole shoe protrudes from the inner arc surface of stator core, and the length that pole shoe protrudes from the stator core inner arc surface is equal to or greater than the length that permanent magnet blocks protrudes from stator core inner arc surface part, permanent magnet blocks is clamped between two pole shoes, and simultaneously two groups of coils of stator winding are installed in the cylindrical shape that the stator core of two semicircle watt shapes forms respectively and are enclosed within on the pole shoe respectively.
Owing to adopted technique scheme, the utlity model has following beneficial effect: the utility model is that output torque requires big and a kind of new design mode that take at the volume of motor is less, characteristics such as have working (machining) efficiency height, reliability height, volume is little, in light weight, temperature compensation characteristic is good are specially adapted to want the application scenario that cube is little, output torque is big.
The utlity model has the advantage of following several respects: 1) air gap of motor can design very for a short time, can improve the air gap flux density of motor so greatly, thereby improve the output torque of motor.The finite angle motor of ordinary construction is in order to connect up, and air gap is not less than 0.5mm usually, and motor gas-gap value of the present utility model can be 0.1mm, has improved air gap flux density greatly.2) two ends of winding can produce moment, the utilance height of stator winding.3) stator inner hole does not have teeth groove, and the counter potential waveform of motor is good, and teeth groove moment reduces greatly.4) temperature compensation characteristic is good.Compared with prior art, the output torque of the finite corner motor that this structural design of employing the utility model is come out obviously increases, and improves about more than 1 times.Because stator does not have teeth groove, and torque ripple coefficient obviously reduces, torque ripple coefficient is less than 2% after tested again.This new structure finite angle motor of the present utility model has been broken motor conventional design thinking, is that one in the design process innovated greatly, and this has certain help to the technical capability that promotes China's electrical micro-machine.The utility model compared with prior art, the advantage that the utility model not only has is simple in structure, make easily, cost of manufacture is lower, but also have advantages such as volume is less, in light weight, output torque operating efficiency big, motor reliability higher and work is better.The utility model is specially adapted to want the application scenario that cube is little, output torque is big to use.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1;
Fig. 3 is an electrical schematic diagram of the present utility model.
Below in conjunction with drawings and Examples the utility model is further described.
Embodiment
Embodiment of the present utility model: the structure of limited angle torque motor of the present utility model such as Fig. 1, shown in 2, when making the finite angle torque motor, can make in accordance with the following methods, be about to form the stator core that the stator core in the stator module of limited angle torque motor is made into two semicircle watt shapes, then stator core and two permanent magnet blocks of these two semicircle watt shapes are combined cylindrical shape of formation by bonding mode, and two permanent magnet blocks are separately positioned between the faying face of stator core of two semicircle watt shapes, make the part of two permanent magnet blocks protrude from the interior arc-shaped surface of stator core respectively simultaneously, then two groups are concentrated coilings and around being placed in the stator core respectively and being enclosed within respectively on the permanent magnet blocks as stator winding, so just be made into the stator module of limited angle torque motor after opposite coil is cascaded; Adopt the mode of punching closed assembly to make rotor core, and produce through hole at the center of rotor core, in through hole, fix a rotor neck bush that adopts the magnetic temperature compensating alloy material, then armature spindle is injected in this rotor neck bush the rotor assembly that promptly makes the limited angle torque motor after being fixed as one with it, and then by traditional approach rotor assembly is installed in can make in the stator module and obtains the limited angle torque motor; Stator core and rotor core all adopt the sheet material punching closed assembly of the magnetically soft alloy material of selling on the market to form; The manufacturing materials of rotor neck bush adopts existing magnetic temperature compensating alloy material; Permanent magnet blocks adopts existing rare earth magnetic steel material to get final product.
Of the present utility model a kind of limited angle torque electric motor structure of Zhi Zuoing as illustrated in fig. 1 and 2 according to the method described above, limited angle torque motor of the present utility model comprises stator module and rotor assembly two parts, and its stator module comprises by the stator core 1 of two semicircle watt shapes, two permanent magnet blocks 3 and stator winding 2 and forming; The two ends of the stator core 1 of two semicircle watt shapes are bonded as one by bonding mode and permanent magnet blocks 3 respectively and form a cylindrical shape, can adopt the safe glue of the pleasure of selling on the market to carry out bonding, during making, make the part of permanent magnet blocks 3 protrude from the interior arc-shaped surface of stator core 1, stator winding 2 is concentrated coilings by two groups and around being composed in series to opposite coil, is installed in two groups of coils of stator winding 2 in the cylindrical shape that the stator core 1 of two semicircle watt shapes forms respectively and is enclosed within respectively on the projection of two permanent magnet blocks 3; Rotor assembly is made up of rotor core 4, rotor neck bush 5 and rotating shaft 6, axis part at rotor core 4 is produced through hole, rotor neck bush 5 is fixed in this through hole by interference fit, the mode of rotating shaft 6 by conventional keys ways of connecting or interference fit is fixed in the rotor neck bush 5, itself and rotor neck bush 5 are connected as one, by traditional mode rotor assembly is installed in the stator module then, can obtains limited angle torque motor of the present utility model like this.In order to improve the operating efficiency of limited angle torque motor better, the cross sectional shape of rotor core 4 can be made as circular and two Φ word shapes that rectangle is combined into, and the ragged edge of two rectangles is made into circular arc limit (as shown in Figure 2); In order to control effective corner of motor, and raising rotating torque, also can all produce pole shoe 1-1 respectively in two ends of the stator core 1 of semicircle watt shape, pole shoe 1-1 is protruded from the inner arc surface of stator core 1, and the length that pole shoe 1-1 protrudes from stator core 1 inner arc surface is equal to or greater than the length that permanent magnet blocks 3 protrudes from stator core 1 inner arc surface part, permanent magnet blocks 3 is clamped between two pole shoe 1-1, simultaneously two groups of coils of stator winding 2 is installed in the cylindrical shape that the stator core 1 of two semicircle watt shapes forms respectively and is enclosed within pole shoe 1-1 respectively and go up.
The electric principle of limited angle torque motor of the present utility model as shown in Figure 3, motor interacts by magnetic field and the stator permanent magnet 3 that the electric current in the stator winding 2 produces, produce magnetic field difference and rotor effect in the zero-bit both sides, by the mechanical position limitation of outer device, rotor is swung within the specific limits.
Execution mode of the present utility model is not limited to the foregoing description, all belongs within the protection range of the present utility model in the various variations of making under the prerequisite that does not break away from the utility model aim.

Claims (3)

1. a limited angle torque motor comprises stator module and rotor assembly two parts, it is characterized in that: described stator module comprises by the stator core (1) of two semicircle watt shapes, two permanent magnet blocks (3) and stator winding (2) and forming; The two ends of the stator core (1) of two semicircle watt shapes are bonded as one by bonding mode and permanent magnet blocks (3) respectively and form a cylindrical shape, and the part of permanent magnet blocks (3) protrudes from the interior arc-shaped surface of stator core (1), stator winding (2) is concentrated coilings by two groups and around being composed in series to opposite coil, and two groups of coils of stator winding (2) are installed in the cylindrical shape that the stator core (1) of two semicircle watt shapes forms respectively and are enclosed within respectively on the projection of two permanent magnet blocks (3); Rotor assembly is made up of rotor core (4), rotor neck bush (5) and rotating shaft (6), axis part at rotor core (4) is provided with through hole, rotor neck bush (5) is installed in the through hole by interference fit, rotating shaft (6) is installed in the rotor neck bush (5) and with rotor neck bush (5) and connects as one, and rotor assembly is installed in the stator module.
2. limited angle torque motor according to claim 1 is characterized in that: the cross sectional shape of rotor core (4) is circular and two Φ word shapes that rectangle is combined into, and the ragged edge of two rectangles is the circular arc limit.
3. limited angle torque motor according to claim 1, it is characterized in that: two ends at the stator core (1) of semicircle watt shape all are respectively equipped with pole shoe (1-1), pole shoe (1-1) protrudes from the inner arc surface of stator core (1), and the length that pole shoe (1-1) protrudes from stator core (1) inner arc surface is equal to or greater than the length that permanent magnet blocks (3) protrudes from stator core (1) inner arc surface part, permanent magnet blocks (3) is clamped between two pole shoes (1-1), and simultaneously two groups of coils of stator winding (2) are installed in the cylindrical shape that the stator core (1) of two semicircle watt shapes forms respectively and are enclosed within respectively on the pole shoe (1-1).
CN2010202829011U 2010-08-05 2010-08-05 Limited angle torque motor Expired - Fee Related CN201733147U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202829011U CN201733147U (en) 2010-08-05 2010-08-05 Limited angle torque motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202829011U CN201733147U (en) 2010-08-05 2010-08-05 Limited angle torque motor

Publications (1)

Publication Number Publication Date
CN201733147U true CN201733147U (en) 2011-02-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202829011U Expired - Fee Related CN201733147U (en) 2010-08-05 2010-08-05 Limited angle torque motor

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102347669A (en) * 2010-08-05 2012-02-08 中国江南航天工业集团林泉电机厂 Limited angle torque motor and method for manufacturing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102347669A (en) * 2010-08-05 2012-02-08 中国江南航天工业集团林泉电机厂 Limited angle torque motor and method for manufacturing same

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110202

Termination date: 20140805

EXPY Termination of patent right or utility model