CN203027059U

CN203027059U - Brushless electromotor

Info

Publication number: CN203027059U
Application number: CN 201220664386
Authority: CN
Inventors: 施力江; 程光泉
Original assignee: XUZHOU YISHENG ELECTROMECHANICAL CO Ltd
Current assignee: XUZHOU YISHENG ELECTROMECHANICAL CO Ltd
Priority date: 2012-12-06
Filing date: 2012-12-06
Publication date: 2013-06-26
Anticipated expiration: 2022-12-06

Abstract

The utility model discloses a brushless electromotor, and belongs to electromotors. The electromotor comprises an output shaft rear cover, a rear mixing ceramic bearing, a rear end cover screw, an outer shell, an iron core winding, a rotor iron core, magnetic steel, an output shaft front end cover, a front end cover screw, a front mixing ceramic bearing and a mandrel; two ends of the outer shell are respectively connected with the output shaft rear end cover and the output shaft front end cover through the rear end cover screw and the front end cover screw; the output shaft rear end cover and the output shaft front end cover are respectively connected with a rear mixing ceramic bearing and a front mixing ceramic bearing; the mandrel penetrates through the rear mixing ceramic bearing and the front mixing ceramic bearing; the rotor iron core is connected to the mandrel; the magnetic steel is embedded in the rotor iron core; and the inner wall of the outer shell is connected with the iron core winding. The brushless electromotor has the following advantages: 1. the demagnetization resistant performance is improved greatly; 2. the magnetic steel cannot fly out through the influence of centrifugal force, and the motor reliability is ensured; 3. 20% of magnetic steel material is reduced, and the cost is lowered; 4. the counter potential wave form of the motor is optimized; 5. the motor efficiency is improved; and 6. the service life of the electromotor is prolonged.

Description

A kind of brushless motor

Technical field

The utility model relates to a kind of motor, specifically a kind of brushless motor.

Background technology

The motor that present electric automobile motor, electronic special vehicle motor, three-phase AC asynchronous motor, naval vessel submarine motor use has been generally the brush motor, the defective of its existence is: the brush motor is arranged due to the Mechanical Contact mechanism of brush/commutator, cause mechanism complicated, and generation commutation spark, electromagnetic interference, the life-span is short, and volume is large, the problems such as quality is heavy, and efficient is low.

Existing motor rotor is all to be pasted on the surface with magnet steel, under centrifugal action, may break away from, and causes fault; For preventing that magnet steel breaks away from, tie up at the magnet steel outer surface, make the Efficiency Decreasing of motor a lot.

The utility model content

The utility model provides a kind of brushless motor, and solving existing motor rotor is all to be pasted on the surface with magnet steel, under centrifugal action, may break away from, and causes fault; For preventing that magnet steel breaks away from, tie up at the magnet steel outer surface, make a lot of problem of Efficiency Decreasing of motor.

The utility model is realized with following scheme: this motor comprises: output shaft rear end closure, rear hybrid ceramic bearing, rear end cap screw, shell, iron core winding, rotor core, magnet steel, output shaft front end housing, front end housing screw, front hybrid ceramic bearing and mandrel; Two ends at shell are connected with output shaft rear end closure and output shaft front end housing by rear end cap screw and front end housing screw respectively, hybrid ceramic bearing and front hybrid ceramic bearing after being connected with respectively on output shaft rear end closure and output shaft front end housing, mandrel passes rear hybrid ceramic bearing and front hybrid ceramic bearing; Rotor core is connected on mandrel, and the embedded magnet steel of rotor core is connected with the iron core winding on outer casing inner wall.

Described rotor core is of a size of between 1.2-5mm every magnetic bridge.

Beneficial effect is owing to having adopted such scheme, secured core winding in the leaded end cap of motor, output shaft end cap, hybrid ceramic bearing, shell, shell, its inner rotor core, embedded magnet steel of rotor core installed.Fixed central spindle in rotor core supports by bearing, forms motor.Motor adopts the hybrid ceramic bearing, disconnect the circular current that shell → lead-in wire end cap → hybrid ceramic bearing → mandrel → steel bearing → output shaft end cap → shell forms, this kind electric motor structure adopts a hybrid ceramic bearing, disconnect circular current to damage of bearings, improved motor useful life; The rotor magnet steel is embedded structure, and magnet steel is not flown out by centrifugal forces affect, has guaranteed the reliability of motor; Rotor core is of a size of between 1.2-5mm every magnetic bridge, by the limited optimal design of magnetic pole surfaces, reduces costs, raise the efficiency, and be sinusoidal wave thereby optimize the winding back emf waveform, guaranteed operating steadily of motor.Be particularly suitable for electric automobile motor, electronic special vehicle motor, the use of naval vessel submarine motor.

Having solved existing motor rotor is all to be pasted on the surface with magnet steel, under centrifugal action, may break away from, and causes fault; For preventing that magnet steel breaks away from, tie up at the magnet steel outer surface, make a lot of problem of Efficiency Decreasing of motor, reached the purpose of this utility model.

Advantage:

1, make magnet steel obtain better protection, anti-demagnetization performance improves greatly.

2, magnet steel is not flown out by centrifugal forces affect, has guaranteed the reliability of motor.

3, reduce by 20% magnetic steel material consumption, make cost.

4, by the limited optimal design of magnetic pole surfaces, thereby optimize the winding back emf waveform.

5, the while also is controlled at cogging torque and the loading moment fluctuation of motor in very little scope, has improved electric efficiency.

6, disconnect circular current to damage of bearings, improved motor useful life.

Description of drawings

Fig. 1 is structure chart of the present utility model.

Fig. 2 is the plan structure figure of Fig. 1.

In figure, 1, output shaft rear end closure; 2, rear hybrid ceramic bearing; 3, rear end cap screw; 4, shell; 5, iron core winding; 6, rotor core; 7, magnet steel; 8, output shaft front end housing; 9, front end housing screw; 10, front hybrid ceramic bearing; 11, mandrel.

Embodiment

Embodiment 1: this motor comprises: output shaft rear end closure 1, rear hybrid ceramic bearing 2, rear end cap screw 3, shell 4, iron core winding 5, rotor core 6, magnet steel 7, output shaft front end housing 8, front end housing screw 9, front hybrid ceramic bearing 10 and mandrel 11; Two ends at shell 4 are connected with output shaft rear end closure 1 and output shaft front end housing 8 by rear end cap screw 3 and front end housing screw 9 respectively, hybrid ceramic bearing 2 and front hybrid ceramic bearing 10 after being connected with respectively on output shaft rear end closure 1 and output shaft front end housing 8, mandrel 11 passes rear hybrid ceramic bearing 2 and front hybrid ceramic bearing 10; Rotor core 6 is connected on mandrel 11, and the embedded magnet steel 7 of rotor core 6 is connected with iron core winding 5 on shell 4 inwalls.

This motor has the axis structure, and lead-in wire end cap, output shaft end cap, shell connect mutually by screw; Motor stator is housed in motor housing, the stator inner ring is equipped with rotor, the embedded magnet steel of rotor, and rotor core is of a size of between 1.2-5mm every magnetic bridge, and rotor is arranged on respectively on hybrid ceramic bearing in the lead-in wire end cap, the interior steelframe bearing of output shaft end cap, and rotor is the motor outputting power.

In Fig. 1 and Fig. 2, motor lead line end cap, rear output shaft end cap 1 and front output end cap 8 are respectively charged into rear hybrid ceramic bearing 2 and front hybrid ceramic bearing 10, connect with shell 4 by rear rear end cap screw 3 and front end housing screw 9 again, secured core winding 5 in shell, its inner rotor core 6, embedded magnet steel 7 of rotor core installed.Fixed central spindle 11 in rotor core supports by bearing, forms motor.

Claims

1. brushless motor, it is characterized in that: this motor comprises: output shaft rear end closure, rear hybrid ceramic bearing, rear end cap screw, shell, iron core winding, rotor core, magnet steel, output shaft front end housing, front end housing screw, front hybrid ceramic bearing and mandrel; Two ends at shell are connected with output shaft rear end closure and output shaft front end housing by rear end cap screw and front end housing screw respectively, hybrid ceramic bearing and front hybrid ceramic bearing after being connected with respectively on output shaft rear end closure and output shaft front end housing, mandrel passes rear hybrid ceramic bearing and front hybrid ceramic bearing; Rotor core is connected on mandrel, and the embedded magnet steel of rotor core is connected with the iron core winding on outer casing inner wall.

2. a kind of brushless motor according to claim 1, it is characterized in that: described rotor core is of a size of between 1.2-5mm every magnetic bridge.