CN220342142U

CN220342142U - Brushless motor

Info

Publication number: CN220342142U
Application number: CN202321740143.7U
Authority: CN
Inventors: 池瑞伟; 李艳彪
Original assignee: Zhejiang Ruiwei Mechanical And Electrical Technology Co ltd
Current assignee: Zhejiang Ruiwei Mechanical And Electrical Technology Co ltd
Priority date: 2023-11-23
Filing date: 2023-11-23
Publication date: 2024-01-12
Anticipated expiration: 2033-11-23

Abstract

The utility model relates to the technical field of motors, and particularly discloses a brushless motor, which comprises a shell, a front end cover, a rear end cover and a rotor, wherein the front end cover and the rear end cover are fixedly connected with the shell, the rotor is rotationally connected with the front end cover and the rear end cover, a stator and a coil bracket are arranged in the shell, a wire clamping rod is fixedly arranged on the coil bracket, a wire clamping groove is formed in the wire clamping rod, and a coil of the stator is wound on the coil bracket and passes through the wire clamping groove.

Description

Brushless motor

Technical Field

The utility model relates to the technical field of motors, in particular to a brushless motor.

Background

The brushless motor is rapidly developed along with the increasing maturity and perfection of the technology, is widely applied to various fields such as aeromodelling, medical equipment, household appliances, electric vehicles and the like, forms a primary industrial chain in Shenzhen, changsha, shanghai and the like, and can be used on a long slide rail of a high-speed automobile seat.

The coil support of the existing brushless motor is easy to enable the coil to be contacted with the shell of the motor when the coil of the stator is wound, so that the stator coil is short-circuited, the brushless motor is easy to fail and damage, the maintenance cost of the motor is increased, and the service life of the motor is reduced.

Disclosure of Invention

The utility model provides a brushless motor, which aims to solve the technical problem that a coil is easy to contact with a shell of the motor to cause short circuit of a stator coil when the coil support of the brushless motor winds the coil of the stator.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a brushless motor, includes shell, front end housing, rear end housing and rotor, the front end housing with the equal fixed connection of rear end housing the shell, the rotor rotates to be connected the front end housing with the rear end housing, be provided with stator and coil support in the shell, the fixed card line pole that is provided with on the coil support, card line groove has been seted up on the card line pole, the coil winding of stator is in on the coil support and pass card line groove.

Further, the wire clamping device further comprises a limiting mechanism, the limiting mechanism comprises a limiting block, a limiting groove is formed in the wire clamping rod, the limiting groove is communicated with the wire clamping groove, one end of the limiting block is rotationally connected with the limiting groove, and the other end of the limiting block penetrates through the wire clamping groove and is abutted to the limiting groove.

Further, stop gear still includes locating lever and expansion spring, the telescopic hole has been seted up on the card line pole, the locating hole has been seted up on the stopper, locating lever sliding connection the locating hole with the telescopic hole, expansion spring one end fixed connection the locating lever, the other end fixed connection the telescopic hole internal surface.

Further, the limiting mechanism further comprises a pull rod, one end of the pull rod is fixedly connected with the positioning rod, the other end of the pull rod penetrates through the wall of the telescopic hole and extends out of the wire clamping rod, and the telescopic spring is sleeved on the pull rod.

Further, the limiting mechanism further comprises a pull disc, and one end of the pull rod extending out of the wire clamping rod is fixedly connected with the pull disc.

Further, the limiting mechanism further comprises a protruding block, and the protruding block is fixedly connected with the lower end of the limiting block.

Further, a supporting rod is arranged on the coil support, and the supporting rod is close to the rear end cover.

A driving module is arranged in the shell and is electrically connected with the stator.

The utility model has the beneficial effects that:

1. according to the utility model, the stator coils wound on the coil support can be clamped and positioned by adopting the wire clamping rod and the wire clamping groove, so that the stator coils on the coil support are prevented from being in direct contact with the shell, the occurrence probability of short circuit of the stator coils is reduced, and the problem that the stator coils are short-circuited due to the fact that the coils are easily contacted with the shell of the motor when the coil support of the brushless motor winds the coils of the stator is solved;

2. according to the utility model, the limit mechanism is adopted to limit the stator coil in the wire clamping groove, so that the stator coil is prevented from being separated from the wire clamping groove, and the stability of the position of the stator coil in the wire clamping groove is improved.

Drawings

Fig. 1 is a schematic structural view of a brushless motor according to the present utility model;

FIG. 2 is a schematic view of the coil support of FIG. 1;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

the device comprises a 1-front end cover, a 2-driving module, a 3-shell, a 4-stator, a 5-rotor, a 6-coil bracket, a 7-rear end cover, an 8-wire clamping rod, a 9-supporting rod, a 10-limiting block, a 11-lug, a 12-wire clamping groove, a 13-positioning rod, a 14-telescopic spring, a 15-pull rod, a 16-pull disc and a 17-telescopic hole.

Detailed Description

The present utility model will be further described in detail with reference to the drawings and examples, which are only for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Examples:

the specific implementation process of the utility model comprises the following steps: the utility model provides a brushless motor, as shown in fig. 1 and 2, includes shell 3, front end housing 1, rear end housing 7 and rotor 5, front end housing 1 with the equal fixed connection of rear end housing 7 the shell 3, rotor 5 rotates to be connected front end housing 1 with rear end housing 7, be provided with stator 4 and coil support 6 in the shell 3, the fixed draw-in bar 8 that is provided with on the coil support 6, draw-in groove 12 has been seted up on the draw-in bar 8, the coil winding of stator 4 is in on the coil support 6 and pass draw-in groove 12.

During installation, a worker installs the rotor 5 in the stator 4 firstly, then winds the stator 4 coil on the stator 4 iron core through the coil support 6 and the wire clamping rod 8, and enables the stator 4 coil to pass through the wire clamping groove 12, then installs the stator 4 and the coil support 6 in the shell 3, then installs the front end cover 1 and the rear end cover 7 on the shell 3, and positions the rotor 5 through the front end cover 1 and the rear end cover 7, the front end cover 1 and the rear end cover 7 are respectively provided with a bearing, the rotor 5 is positioned through the two bearings, then the stator 4 coil can be electrified, the stator 4 coil generates a magnetic field, and the rotor 5 can be the injection molding integrated rotor 5.

As shown in fig. 2 and 3, the wire clamping device further comprises a limiting mechanism, the limiting mechanism comprises a limiting block 10, a limiting groove is formed in the wire clamping rod 8 and is communicated with the wire clamping groove 12, one end of the limiting block 10 is rotationally connected with the limiting groove, and the other end of the limiting block penetrates through the wire clamping groove 12 and is abutted to the limiting groove.

After the stator 4 coil is clamped into the clamping groove 12, a worker rotates the limiting block 10, two ends of the limiting block 10 are all abutted against the bottom surface of the limiting groove, the limiting block 10 is positioned on the outer side of the stator 4 coil in the clamping groove 12, and can limit and protect the stator 4 coil and prevent the stator 4 coil from being directly contacted with the shell 3.

As shown in fig. 2 and 3, the limiting mechanism further includes a positioning rod 13 and a telescopic spring 14, a telescopic hole 17 is formed in the wire clamping rod 8, a positioning hole is formed in the limiting block 10, the positioning rod 13 is slidably connected with the positioning hole and the telescopic hole 17, one end of the telescopic spring 14 is fixedly connected with the positioning rod 13, and the other end is fixedly connected with the inner surface of the telescopic hole 17.

Before the limiting block 10 rotates, a worker firstly gets into the telescopic hole 17 by the positioning rod 13, at the moment, the telescopic spring 14 is compressed by the positioning rod 13, then the worker rotates the limiting block 10 to abut against the bottom surface of the limiting groove, the positioning rod 13 is aligned with the positioning hole, and then the positioning rod 13 can be sprung into the positioning hole by the telescopic spring 14, so that the positioning of the limiting block 10 is formed.

As shown in fig. 2 and 3, the limiting mechanism further comprises a pull rod 15, one end of the pull rod 15 is fixedly connected with the positioning rod 13, the other end of the pull rod passes through the wall of the telescopic hole 17 and extends out of the wire clamping rod 8, and the telescopic spring 14 is sleeved on the pull rod 15.

When the positioning rod 13 is pulled into the telescopic hole 17, a worker pulls the pull rod 15 away from the limiting groove, then the pull rod 15 can bring the positioning rod 13 into the telescopic hole 17 completely, at the moment, the telescopic spring 14 is compressed by the positioning rod 13, then the worker rotates the limiting block 10 to abut against the bottom surface of the limiting groove, at the moment, the positioning hole is aligned with the positioning rod 13, then the worker releases the pull rod 15, the positioning rod 13 and the pull rod 15 can be pushed by the telescopic spring 14, and the positioning rod 13 enters the positioning hole.

As shown in fig. 2 and 3, the limiting mechanism further includes a pull disc 16, and one end of the pull rod 15 extending out of the wire clamping rod 8 is fixedly connected with the pull disc 16.

The pull disc 16 can be convenient for the staff to pull the pull rod 15, and the material of pull disc 16 can be stainless steel, can reduce the erosion that receives moisture in the air, has increased the life of pull disc 16.

As shown in fig. 2, the limiting mechanism further includes a bump 11, and the bump 11 is fixedly connected to the lower end of the limiting block 10.

The lug 11 is located the spacing inslot outside completely, can be convenient for the staff promote stopper 10 through the lug 11 and rotate in the spacing inslot, has improved the convenience that stator 4 coil kept away from card wire casing 12.

As shown in fig. 1 and 2, the coil bracket 6 is provided with a support rod 9, and the support rod 9 is close to the rear end cover 7.

The abutment rod 9 is close to the rear end cover 7, so that the rear end cover 7 can be prevented from being close to or contacting the coil support 6, the distance between the rear end cover 7 and the coil support 6 is kept, and the safety of the coil of the stator 4 is improved.

As shown in fig. 1, a driving module 2 is disposed in the housing 3, and the driving module 2 is electrically connected to the stator 4.

The external power supply is converted and applied to the coil of the stator 4 through the driving module 2 to generate an electromagnetic field, an electronic reversing element MOS tube is arranged in the driving module 2, the current direction of the coil can be changed through the electronic reversing element MOS tube of the driving module 2 to form a rotating magnetic field, the driving module 2 can adjust the speed through PWM, the PWM frequency can be adapted to 1-100KHz, and the broadband duty ratio is 0-100% adjustable.

The above embodiments should not limit the present utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent conversion fall within the protection scope of the present utility model.

Claims

1. A brushless motor, characterized in that: the stator winding device comprises a shell, a front end cover, a rear end cover and a rotor, wherein the front end cover is fixedly connected with the rear end cover, the rotor is rotationally connected with the front end cover and the rear end cover, a stator and a coil support are arranged in the shell, a wire clamping rod is fixedly arranged on the coil support, a wire clamping groove is formed in the wire clamping rod, and a coil of the stator is wound on the coil support and penetrates through the wire clamping groove.

2. A brushless motor as claimed in claim 1, wherein: still include stop gear, stop gear includes the stopper, offered the spacing groove on the card line pole, the spacing groove intercommunication the card wire casing, stopper one end is rotated and is connected the spacing groove, the other end passes card wire casing and butt the spacing groove.

3. A brushless motor as claimed in claim 2, wherein: the limiting mechanism further comprises a positioning rod and a telescopic spring, a telescopic hole is formed in the wire clamping rod, a positioning hole is formed in the limiting block, the positioning rod is connected with the positioning hole in a sliding mode, one end of the telescopic spring is fixedly connected with the positioning rod, and the other end of the telescopic spring is fixedly connected with the inner surface of the telescopic hole.

4. A brushless motor as claimed in claim 3, wherein: the limiting mechanism further comprises a pull rod, one end of the pull rod is fixedly connected with the positioning rod, the other end of the pull rod penetrates through the wall of the telescopic hole and extends out of the wire clamping rod, and the telescopic spring is sleeved on the pull rod.

5. A brushless motor as claimed in claim 4, wherein: the limiting mechanism further comprises a pull disc, and one end of the pull rod extending out of the wire clamping rod is fixedly connected with the pull disc.

6. A brushless motor as claimed in claim 2, wherein: the limiting mechanism further comprises a protruding block, and the protruding block is fixedly connected with the lower end of the limiting block.

7. A brushless motor as claimed in claim 1, wherein: the coil support is provided with a supporting rod, and the supporting rod is close to the rear end cover.

8. A brushless motor as claimed in claim 1, wherein: a driving module is arranged in the shell and is electrically connected with the stator.