CN203423601U

CN203423601U - Disc coreless permanent-magnet brushless direct-current motor

Info

Publication number: CN203423601U
Application number: CN201320439635.2U
Authority: CN
Inventors: 左国坤
Original assignee: HUZHOU YUNTIAN NEW ENERGY TECHNOLOGY Co Ltd
Current assignee: HUZHOU YUNTIAN NEW ENERGY TECHNOLOGY Co Ltd
Priority date: 2013-07-23
Filing date: 2013-07-23
Publication date: 2014-02-05
Anticipated expiration: 2023-07-23

Abstract

The utility model relates to a disc direct-current motor and particularly relates to a disc coreless permanent-magnet brushless direct-current motor. The disc coreless permanent-magnet brushless direct-current motor is implemented through the following technical scheme: the disc coreless permanent-magnet brushless direct-current motor comprises two shells connected in a sealed mode, two end covers arranged on the corresponding shells, and two bearings arranged on the corresponding end covers; each end cover is provided with a retaining edge extending to the end face of the corresponding bearing; and an O-shaped sealing ring is arranged between each retaining edge and the end face of the corresponding bearing. An armature winding of the motor is annular and comprises an arc-shaped first part far away from a shaft, an arc-shaped second part close to the shaft, and an arc-shaped third part connected between the two ends of the first part and the corresponding ends of the second part, wherein a connection line between the circular center of the first part and the circular center of the second part is located in the middle section of the armature winding, and the inner diameter of the first part is 1.5-2 times the inner diameter of the second part. The disc coreless permanent-magnet brushless direct-current motor has good sealing property and magneto-electric conversion rate.

Description

Disc type iron core-free permanent-magnet brushless DC electric machine

Technical field

The utility model relates to disc style D. C. motor, particularly disc type iron core-free permanent-magnet brushless DC electric machine.

Background technology

Disc type iron core-free permanent-magnet brushless DC electric machine of the prior art, the sealing between its end cap and bearing is often poor, thereby causes motor lower useful life, also easily produces potential safety hazard.

Utility model content

The purpose of this utility model is to provide a kind of disc type iron core-free permanent-magnet brushless DC electric machine, and between its end cap and bearing, sealing is better, has improved the useful life of motor, is also conducive to reduce potential safety hazard.

Above-mentioned technical purpose of the present utility model is achieved by the following technical programs: disc type iron core-free permanent-magnet brushless DC electric machine, comprise the first housing, with described the first housing seal and the second housing of being fixedly connected with, fix and be sealedly attached to the first end cap of described the first housing, fix and be sealedly attached to the second end cap of described the second housing, fix and be sealedly attached to the clutch shaft bearing of described the first end cap, fix and be sealedly attached to the second bearing of described the second end cap, fix and be sealedly attached to the bearing pedestal of described the second bearing, the axle that runs through described clutch shaft bearing and bearing pedestal, described the first end cap has the first block edge that extends to described clutch shaft bearing end face, is provided with an O RunddichtringO between described the first block edge and the end face of described clutch shaft bearing, described the second end cap has the second block edge that extends to described the second bearing face, between described the second block edge and the end face of described the second bearing, is provided with the 2nd O RunddichtringO.

As of the present utility model preferred, between described the first end cap sidewall and described clutch shaft bearing sidewall, be provided with the 3rd O RunddichtringO; Between described the second end cap sidewall and described the second bearing sidewall, be provided with the 4th O RunddichtringO.

As of the present utility model preferred, described the first inner walls is provided with the first permanent magnet; Described the second inner walls is provided with the second permanent magnet; On described axle, be fixed with armature winding seat, described armature winding seat edge is fixed with the armature winding between described the first permanent magnet and described the second permanent magnet.

As of the present utility model preferred, described armature winding in the form of a ring, and comprise away from axle and be the first of arcuation, near axle and be the second portion of arcuation and one and the third part that be arcuation of smooth connection between described first two ends and described second portion respective ends respectively; The line in the center of circle of described first and the center of circle of described second portion is arranged in the middle section of this armature winding; The internal diameter of described first is 1.5 times to 2 times of internal diameter of described second portion.

As of the present utility model preferred, the 3-5 of the internal diameter that the internal diameter of described third part is described first doubly.

As of the present utility model preferred, on described armature winding seat, lead to the cable through described bearing pedestal.

As of the present utility model preferred, this kind of motor also comprises control device, the conversion major loop device that described control device comprises controller and is comprised of linear filter and inverter; Described controller by hall position transducer, be electrically connected on described inverter drive circuit, be located at decoding circuit between described hall position transducer and described drive circuit, the frequency that is connected in described hall position transducer is pressed translation circuit, be connected in that described frequency is pressed the speed regulator of translation circuit, is connected in the current comparator between described speed regulator and described drive circuit, the sample circuit being connected between described inverter and described current comparator forms.

In sum, the utlity model has following beneficial effect: the utility model structure, easy to implement; Due to the setting of block edge, improve foreign matter and entered the difficulty in motor, due to the setting of the O RunddichtringO between block edge and bearing face, more effectively improved the sealing between end cap and bearing simultaneously; The setting of the O RunddichtringO between end cap sidewall and bearing sidewall, has also further improved the sealing between end cap and bearing simultaneously; Due to the special construction of the utility model armature winding, magnetoelectricity changing effect is effectively improved simultaneously, be increased to compared to existing technology more than 15%; And at armature winding moulding section, take segmentation electromagnetism display technology, increase and optimize motor pole quantity, the power density of General Promotion motor, and be conducive to reduce motor volume, optimize electric machine structure, guarantee that motor volume is little, lightweight, and work temperature rise is not high; Meanwhile, because the enforcement of control device has realized electric system integrated optimization scheme, make the whole synthesis efficiency of this electric system up to 94～98%; Adopt permanent magnet to adopt high magnetic energy rare earth permanent-magnetic material, cancelled the iron core in conventional motors, improve magnetic loading and the power density of motor, thereby further alleviate motor weight, reduce motor volume, make to produce more environmental protection, eliminate magnetic damping and iron loss problem that traditional magneto cannot overcome, can reduce driving power, reduce iron loss pyrotoxin, reduce motor operation temperature rise, improve efficiency and the reliability of magneto; And owing to there is no magnetic damping, make starting current lower, after getting into smooth, inertia is larger, therefore more power saving.

Accompanying drawing explanation

Fig. 1 is example structure schematic diagram;

Fig. 2 is armature winding structure schematic diagram in embodiment;

Fig. 3 is control device electrical connection schematic diagram in embodiment.

In figure, 1, the first housing, 11, the first end cap, 111, the first block edge, 12, clutch shaft bearing, 13, the one O RunddichtringO, 14, the 3rd O RunddichtringO, 2, the second housing, 21, the second end cap, 211, the second block edge, 22, the second bearing, 23, bearing pedestal, 24, the 2nd O RunddichtringO, 25, the 4th O RunddichtringO, 3, axle, 41, the first permanent magnet, 42, the second permanent magnet, 5, armature winding seat, 51, armature winding, 6, cable, 71, linear filter, 72, inverter, 8, controller, 81, hall position transducer, 82, decoding circuit, 83, sample circuit, 84, frequently press translation circuit, 85, speed regulator, 86, current comparator, 87, drive circuit.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make to the present embodiment the modification that there is no creative contribution as required after reading this specification, but as long as within the scope of claim of the present utility model, are all subject to the protection of Patent Law.

Embodiment: as shown in Figure 1-2, disc type iron core-free permanent-magnet brushless DC electric machine, comprises the first housing 1, the second housing 2 that seals and be fixedly connected with the first housing 1; On the first housing 1, fix and be sealedly connected with the first end cap 11; Clutch shaft bearing 12 is fixed and be sealedly connected with to the first end cap 11; The second end cap 21 is fixed and be sealedly connected with to the second housing 2; The second bearing 22 is fixed and be sealedly connected with to the second end cap 21; Bearing pedestal 23 is fixed and be sealedly connected with to the second bearing 22; Between clutch shaft bearing 12 and bearing pedestal 23, run through and be arranged with axle 3; The first housing 1 inwall is provided with the first permanent magnet 41; The second housing 2 inwalls are provided with the second permanent magnet 42; On axle 3, be fixed with armature winding seat 5, armature winding seat 5 edges are fixed with the armature winding 51 between the first permanent magnet 41 and the second permanent magnet 42; On armature winding seat 5, lead to the cable 6 through bearing pedestal 23.

The first end cap 11 has to extend between the first block edge 111, the first block edges 111 of clutch shaft bearing 12 end faces and the end face of clutch shaft bearing 12 and is provided with an O RunddichtringO 13; The second end cap 21 has to extend between the second block edge 211, the second block edges 211 of the second bearing 22 end faces and the end face of the second bearing 22 and is provided with the 2nd O RunddichtringO 24; Between the first end cap 11 sidewalls and clutch shaft bearing 12 sidewalls, be provided with the 3rd O RunddichtringO 14; Between the second end cap 21 sidewalls and the second bearing 22 sidewalls, be provided with the 4th O RunddichtringO 25.

Armature winding 51 in the form of a ring, and comprise away from axle 3 and be the first 511 of arcuation, near axle 3 and be the second portion 512 of arcuation and one and the third part that be arcuation 513 of smooth connection between first 511 two ends and second portion 512 respective ends respectively; The line in the center of circle of the center of circle of first 511 and second portion 512 is arranged in the middle section of this armature winding 51; The internal diameter of first 512 is 1.5 times to 2 times of internal diameter of second portion 512, and the present embodiment is 2 times; The internal diameter of third part 513 be first 511 internal diameter 3-5 doubly, the present embodiment is 4.5 times.

The present embodiment also comprises control device, the conversion major loop device 7 that control device comprises controller 8 and is comprised of linear filter 71 and inverter 72; Controller 8 by hall position transducer 81, be electrically connected on described inverter 72 drive circuit 87, be located at decoding circuit 82 between hall position transducer 81 and drive circuit 87, the frequency that is connected in hall position transducer 81 is pressed translation circuit 84, be connected in frequently press translation circuit 84 speed regulator 85, be connected in the current comparator 86 between speed regulator 85 and drive circuit 87, the sample circuit 83 being connected between inverter 72 and current comparator 86 forms; Electrical connection between conversion major loop device 7 and controller 8 as shown in Figure 3.

Claims

1. disc type iron core-free permanent-magnet brushless DC electric machine, it is characterized in that, comprise the first housing (1), the second housing (2) that seals and be fixedly connected with described the first housing (1), fix and be sealedly attached to first end cap (11) of described the first housing (1), fix and be sealedly attached to second end cap (21) of described the second housing (2), fix and be sealedly attached to the clutch shaft bearing (12) of described the first end cap (11), fix and be sealedly attached to second bearing (22) of described the second end cap (21), fix and be sealedly attached to the bearing pedestal (23) of described the second bearing (22), the axle (3) that runs through described clutch shaft bearing (12) and bearing pedestal (23), described the first end cap (11) has the first block edge (111) that extends to described clutch shaft bearing (12) end face, between described the first block edge (111) and the end face of described clutch shaft bearing (12), is provided with an O RunddichtringO (13), described the second end cap (21) has the second block edge (211) that extends to described the second bearing (22) end face, between described the second block edge (211) and the end face of described the second bearing (22), is provided with the 2nd O RunddichtringO (24).

2. disc type iron core-free permanent-magnet brushless DC electric machine according to claim 1, is characterized in that, between described the first end cap (11) sidewall and described clutch shaft bearing (12) sidewall, is provided with the 3rd O RunddichtringO (14); Between described the second end cap (21) sidewall and described the second bearing (22) sidewall, be provided with the 4th O RunddichtringO (25).

3. disc type iron core-free permanent-magnet brushless DC electric machine according to claim 2, is characterized in that, described the first housing (1) inwall is provided with the first permanent magnet (41); Described the second housing (2) inwall is provided with the second permanent magnet (42); On described axle (3), be fixed with armature winding seat (5), described armature winding seat (5) edge is fixed with the armature winding (51) being positioned between described the first permanent magnet (41) and described the second permanent magnet (42).

4. disc type iron core-free permanent-magnet brushless DC electric machine according to claim 3, it is characterized in that, described armature winding (51) in the form of a ring, and comprise away from axle (3) and be the first (511) of arcuation, near axle (3) and be the second portion (512) of arcuation and one and the third part that be arcuation (513) of smooth connection between described first (511) two ends and described second portion (512) respective ends respectively; The line in the center of circle of the center of circle of described first (511) and described second portion (512) is arranged in the middle section of this armature winding (51); The internal diameter of described first (512) is 1.5 times to 2 times of internal diameter of described second portion (512).

5. disc type iron core-free permanent-magnet brushless DC electric machine according to claim 4, is characterized in that, the internal diameter of described third part (513) be described first (511) internal diameter 3-5 doubly.

6. disc type iron core-free permanent-magnet brushless DC electric machine according to claim 5, is characterized in that, leads to the cable (6) through described bearing pedestal (23) on described armature winding seat (5).

7. disc type iron core-free permanent-magnet brushless DC electric machine according to claim 6, it is characterized in that, this kind of motor also comprises control device, and described control device comprises controller (8) and the conversion major loop device (7) being comprised of linear filter (71) and inverter (72), described controller (8) is by hall position transducer (81), be electrically connected on the drive circuit (87) of described inverter (72), be located at the decoding circuit (82) between described hall position transducer (81) and described drive circuit (87), the frequency that is connected in described hall position transducer (81) is pressed translation circuit (84), be connected in described frequency and press the speed regulator (85) of translation circuit (84), be connected in the current comparator (86) between described speed regulator (85) and described drive circuit (87), the sample circuit (83) being connected between described inverter (72) and described current comparator (86) forms.