CN114337055B

CN114337055B - Brushless rotating electric machine

Info

Publication number: CN114337055B
Application number: CN202111588254.6A
Authority: CN
Inventors: 廖中印
Original assignee: Shenzhen Yajia Motor Co ltd
Current assignee: Shenzhen Yajia Motor Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2023-03-17
Anticipated expiration: 2041-12-23
Also published as: CN114337055A

Abstract

The brushless rotating motor comprises a motor body, two end covers detachably connected to two ends of the motor body, a rotor arranged in the motor body, a plurality of stator windings connected to the inner side wall of the motor body in a sliding manner, and a fixing mechanism arranged on the motor body and used for fixing the stator windings to the inner side wall of the motor body; two ends of the rotor are respectively in rotating connection with the two end covers; the fixing mechanism comprises a dovetail block fixedly arranged on the stator winding, a fixing block connected in the motor body in a sliding mode, a screw rod connected to the fixing block in a threaded mode, a knob arranged at one end, far away from the fixing block, of the screw rod, and a limiting piece arranged between the fixing block and the motor body. This application has and is convenient for install the winding on the stator to and be convenient for overhaul and maintain the stator winding of motor, improve the installation and the maintenance efficiency of motor, strengthen the effect of the stability of motor operation.

Description

Brushless rotating electric machine

Technical Field

The present application relates to the field of brushless motors, and particularly to a brushless rotating motor.

Background

The brushless motor has the advantages of no brush, low interference, smooth operation, low noise, small error of steady-state rotating speed and the like, and the brushless motor has short development time in China, but is rapidly developed along with the increasing maturity and perfection of the technology, and is widely applied to a plurality of fields such as aeromodelling, medical equipment, household appliances, electric vehicles and the like.

At present, brushless motor includes the shell, the end cover of setting at the shell both ends, the setting is at the inside controller of shell, a plurality ofly set up the stator winding inside the shell, and set up the rotor inside the shell, wherein stator and the usually integrated into one piece of shell inside wall among the stator winding, and in order to guarantee the stability of motor operation, the inside wall of fixed to the shell with the stator usually, so when installing the winding on the stator, the operation is comparatively loaded down with trivial details, and stator or winding in case appear the damage, after the trouble such as fracture, the inconvenient stator winding of changing or maintaining of staff.

Disclosure of Invention

In order to facilitate the installation winding on the stator to and be convenient for overhaul and maintain the stator winding of motor, improve the installation and the maintenance efficiency of motor, strengthen the stability of motor operation, this application provides a brushless rotating electrical machines.

The application provides a brushless rotating electrical machines adopts following technical scheme:

a brushless rotating motor comprises a motor body, two end covers detachably connected to two ends of the motor body, a rotor arranged in the motor body, a plurality of stator windings connected to the inner side wall of the motor body in a sliding manner, and a fixing mechanism arranged on the motor body and used for fixing the stator windings to the inner side wall of the motor body; and two ends of the rotor are respectively and rotatably connected with the two end covers.

By adopting the technical scheme, when a worker installs the motor, firstly, the windings are uniformly wound on the stator to form the stator windings, then, the plurality of stator windings are uniformly distributed on the inner side wall of the motor body in a circular shape in sequence, the stator windings are fixed to the inner side wall of the motor body through the fixing mechanism, and then, the worker installs the rotor and the end cover on the motor body respectively, so that the motor can be installed; if the stator winding appears the bad condition such as winding damage, fracture, the fixed state of fixed establishment is relieved to the accessible, later with the stator winding dismantlement of damaged department lift down, the stator winding of independent renewal can, it not only is convenient for overhaul and maintain the stator winding of motor, has alleviateed staff's intensity of labour moreover greatly, has improved the life-span and the stability of motor to and staff's installation, maintenance efficiency.

Optionally, the fixing mechanism includes a dovetail block fixedly disposed on the stator winding, a fixed block slidably connected in the motor body, a screw threadedly connected to the fixed block, a knob disposed at an end of the screw away from the fixed block, and a limiting member disposed between the fixed block and the motor body and used for limiting movement of the fixed block;

a dovetail groove is formed in the inner side wall of the motor body, the dovetail block is inserted into the dovetail groove, one end of the dovetail groove is closed, and the other end of the dovetail groove is open; the motor body is provided with a sliding groove, the fixed block is positioned in the sliding groove and slides, and the sliding groove is communicated with the dovetail groove; one end of the screw rod is in threaded connection with the motor body, and the other end of the screw rod is in threaded connection with the fixed block.

By adopting the technical scheme, when a worker fixes the stator winding, firstly, the dovetail block fixedly connected with the stator winding is inserted into the dovetail groove from one side of the opening of the dovetail groove, then the worker rotates the knob, the knob drives the screw rod to rotate, the screw rod drives the fixing block in threaded connection with the screw rod to move towards one side of the stator winding and tightly press the fixing block at the end part of the dovetail block, the dovetail block is fixed into the dovetail groove, and therefore the stator winding fixedly connected with the dovetail block is fixed into the motor body; on the contrary, the fixed state of the fixing mechanism can be released by reversely rotating the knob by the worker, and meanwhile, the limiting piece has a limiting effect on the movement of the fixed block, so that the worker can fix or release the fixed state of the stator winding conveniently, and the worker can operate conveniently.

Optionally, a self-locking assembly for controlling the connection or disconnection of the knob and the screw rod is arranged between the knob and the screw rod.

By adopting the technical scheme, when the self-locking assembly is in a disconnected state, even if a worker mistakenly touches the knob, the knob only idles and cannot drive the screw rod to rotate; when the self-locking assembly is in a connection state, a worker rotates the knob, and the knob can drive the screw rod to rotate, so that the stability of the fixing mechanism is improved.

Optionally, the self-locking assembly includes a control rod fixedly disposed at one end of the knob close to the screw, an insertion block fixedly disposed at one end of the control rod far from the knob, and a spring disposed at one end of the control rod far from the knob;

the utility model discloses a screw rod, including screw rod, idle groove, splicing groove, resilience groove, control lever one end, splicing block, spring, the screw rod is inside to be seted up idle groove, splicing groove and resilience groove, idle groove, splicing groove, resilience groove intercommunication, control lever one end is run through the screw rod and is located idle inslot, the splicing block can be located idle inslot internal rotation and slide, the splicing groove is located one side that the screw rod was kept away from in idle groove, the splicing block can be pegged graft to the splicing groove, resilience groove is located one side that idle groove was kept away from in the splicing groove, the spring is located resilience inslot and one end and control lever butt, the spring is in compression state all the time.

By adopting the technical scheme, when a worker needs to rotate the screw rod, the worker firstly presses the knob to one side close to the screw rod, then the knob drives the control rod to move, the control rod drives the insertion block to be positioned in the idle rotation groove to slide, so that the insertion block is inserted into the insertion groove, meanwhile, the spring is compressed, and then the worker rotates the knob, so that the knob can control and drive the screw rod to rotate; when the knob is loosened by a worker, the spring automatically pushes the control rod to move to the side far away from the screw rod, and the control rod drives the insertion block fixedly connected with the control rod to be separated from the insertion groove, so that the screw rod cannot rotate even if the worker mistakenly touches the knob, and the stability of the motor is further improved; and the control rod and the knob can not be separated from the screw rod by the inserting block, so that the phenomenon that the control rod and the knob are separated from the screw rod to cause loss or installation is not easy to occur.

Optionally, the number of the insertion blocks is set to be multiple, and the multiple insertion blocks are uniformly distributed at intervals along the circumferential direction of the control rod.

Through adopting above-mentioned technical scheme, when grafting piece and inserting groove are in the detached state, rotate the knob after, the grafting piece can be the dislocation distribution with the inserting groove, and when the staff need rotate the screw rod, need insert the inserting groove with the grafting piece in, the even interval distribution of a plurality of grafting pieces, so the staff only need rotate less angle and make one of them grafting piece peg graft in the inserting groove after, all the other grafting pieces all peg graft to the inserting groove in to realize the knob and be connected of screw rod.

Optionally, the limiting part is a limiting block fixedly arranged on the fixed block, a limiting groove is formed in the motor body, and the limiting block is located in the limiting groove and slides.

Through adopting above-mentioned technical scheme, when the stopper moved to the other end by the one end of spacing groove, its length of removing was the effective length of moving of fixed block to be convenient for the staff control fixed block and the tip butt of dovetail piece or the separation, and then be convenient for control fixed establishment's fixed and remove fixed state.

Optionally, a chamfer is formed on one side, close to the dovetail block, of the fixed block.

Through adopting above-mentioned technical scheme, the chamfer stretches out the effect that the sliding tray played direction and location for the fixed block, and the fixed block of being convenient for stretches out the sliding tray to compress tightly at the tip of forked tail piece, and then exert certain prestressing force to forked tail piece and stator winding, make stator winding be difficult for sliding in the dovetail, improve stator winding's stability.

Optionally, a tool groove is formed in one side, away from the screw, of the knob.

Through adopting above-mentioned technical scheme, when the instrument groove rotated the knob for the staff, conveniently inserted the instrument of supplementary rotation knob such as screwdriver to it provides the convenience to rotate the knob for the staff.

Optionally, a plurality of cooling fins are fixedly arranged on the outer side wall of the motor body.

By adopting the technical scheme, the heat generated by the radiating fins inside the motor is timely dissipated, and a good heat dissipation effect of the motor is ensured, so that internal elements of the motor are not easy to damage, and the service life of the motor is prolonged.

Optionally, a bearing is disposed between the rotor and the end cover.

Through adopting above-mentioned technical scheme, the bearing not only plays the supporting role to the rotor, and the bearing has reduced the wearing and tearing between rotor and the end cover moreover, has improved the life of rotor and end cover.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the space inside the motor body is narrow, and the process of installing the winding on the stator is carried out by separating from the motor body, so that the installation efficiency of workers is greatly improved;

2. if the stator winding has the bad conditions of winding damage, breakage and the like, the fixing state of the fixing mechanism can be removed, then the stator winding at the damaged position is disassembled, and a new stator winding is independently replaced, so that the stator winding is convenient to overhaul and maintain, the labor intensity of workers is greatly reduced, the service life and the stability of the motor are prolonged, and the installation and overhaul efficiency of the workers are improved;

3. the limiting piece has a limiting effect on the movement of the fixed block, so that a worker can fix or remove the stator winding conveniently, and the operation of the worker is facilitated;

4. when the self-locking assembly is in a disconnected state, even if workers touch the knob by mistake, the knob only idles and does not drive the screw rod to rotate; when the self-locking assembly is in a connection state, a worker rotates the knob, and the knob can drive the screw rod to rotate, so that the stability of the fixing mechanism is improved.

Drawings

Fig. 1 is a schematic structural view of a brushless rotating electric machine in an embodiment of the present application;

fig. 2 is a schematic view showing an exploded structure of the brushless rotating electrical machine;

fig. 3 is a partial sectional view showing a brushless rotating electric machine;

FIG. 4 is a partial cross-sectional view showing a securing mechanism;

fig. 5 is a partial sectional view showing the knob disconnected from the screw.

Description of reference numerals: 1. a motor body; 11. a dovetail groove; 12. a sliding groove; 13. a limiting groove; 2. an end cap; 3. a rotor; 4. a bearing; 5. a heat sink; 6. a stator winding; 7. a fixing mechanism; 71. a dovetail block; 72. a fixed block; 721. chamfering; 73. a screw; 731. an idle running groove; 732. inserting grooves; 733. a rebound groove; 74. a knob; 741. a tool slot; 75. a self-locking assembly; 751. a control lever; 752. an insertion block; 753. a spring; 76. and a limiting block.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a brushless rotating electrical machine. Referring to fig. 1 and 2, the brushless rotating electrical machine includes a motor body 1, end caps 2 are respectively provided at both ends of the motor body 1, and the end caps 2 are connected to the motor body 1 by bolts. A rotor 3 is arranged in the motor body 1, and two ends of the rotor 3 are respectively in rotary connection with the two end covers 2; be provided with bearing 4 between rotor 3 and the end cover 2, bearing 4 not only is used for playing the supporting role to rotor 3, is used for reducing the wearing and tearing between rotor 3 and the end cover 2 moreover, improves rotor 3 and end cover 2's life. The lateral wall of motor body 1 has set firmly a plurality of fin 5, and a plurality of fin 5 along the even interval distribution of the circumference of motor body 1, and fin 5 is used for in time effluvium to the heat that the motor is inside to produce, has guaranteed the good radiating effect of motor.

Referring to fig. 2 and 3, a plurality of stator windings 6 are arranged on the inner side wall of the motor body 1, the plurality of stator windings 6 are circularly and uniformly arranged on the inner side wall of the motor body 1 at intervals, and each stator winding 6 is connected with the inner side wall of the motor body 1 in a sliding manner along the length direction of the motor. Be provided with a plurality of fixed establishment 7 on the motor body 1, a plurality of fixed establishment 7 and a plurality of stator winding 6 one-to-one, fixed establishment 7 is used for fixing stator winding 6 to on the inside wall of motor body 1.

When a worker installs the motor, firstly, the windings are uniformly wound on the stator outside the motor body 1 to form the stator windings 6, then, the plurality of stator windings 6 are uniformly distributed on the inner side wall of the motor body 1 in a circular shape in sequence, the stator windings 6 are fixed to the inner side wall of the motor body 1 through the fixing mechanism 7, and then, the worker installs the rotor 3, the bearing 4 and the end cover 2 on the motor body 1 respectively, so that the installation of the motor can be completed; if stator winding 6 bad conditions such as winding damage, fracture appear, the fixed state of fixing mechanism 7 is relieved to the accessible, later with the stator winding 6 dismantlement of damage department down, it can alone to change new stator winding 6, it is comparatively convenient to overhaul, maintain, change stator winding 6 of motor.

Referring to fig. 3 and 4, the fixing mechanism 7 includes a dovetail block 71 fixedly disposed on the stator winding 6, the inner side wall of the motor body 1 is provided with a dovetail groove 11 along the length direction thereof, the dovetail block 71 is inserted into the dovetail groove 11, and one end of the dovetail groove 11 is closed while the other end thereof is open. The motor body 1 is provided with a plurality of sliding grooves 12, the sliding grooves 12 are communicated with the dovetail grooves 11, the sliding grooves 12 correspond to the stator windings 6 one by one, the opening direction of the sliding grooves 12 is perpendicular to the opening direction of the dovetail grooves 11, the fixing blocks 72 are arranged in the sliding grooves 12, the fixing blocks 72 can be located in the sliding grooves 12 to slide, and meanwhile the fixing blocks 72 can compress the end portions of the dovetail blocks 71. The fixed block 72 is close to one side of dovetail block 71 and has still seted up chamfer 721, and chamfer 721 is used for making things convenient for fixed block 72 to stretch out sliding groove 12 to compress tightly at the tip of dovetail block 71, and then exert certain prestressing force to dovetail block 71 and stator winding 6, make stator winding 6 be difficult for sliding in dovetail 11, improve stator winding 6's stability.

Referring to fig. 4 and 5, a screw 73 is disposed at an end of the fixing block 72 away from the stator winding 6, one end of the screw 73 is in threaded connection with the motor body 1, the other end of the screw 73 is in threaded connection with the fixing block 72, and an end of the screw 73 in threaded connection with the motor body 1 extends out of the motor body 1. The screw 73 is provided with the knob 74 apart from the one end interval of fixed block 72, is provided with from locking Assembly 75 between knob 74 and the screw 73, and from locking Assembly 75 is used for controlling being connected or breaking off of knob 74 and screw 73, is used for preventing staff's maloperation button simultaneously, improves fixed establishment 7's stability. A tool groove 741 is formed in a side of the knob 74 away from the screw 73, and the tool groove 741 is used for facilitating insertion of a tool such as a screwdriver or the like for assisting in rotating the knob 74 when the knob 74 needs to be rotated by a worker, so as to provide convenience for the worker to rotate the knob 74.

Referring to fig. 4 and 5, a limiting member is further disposed between the fixing block 72 and the motor body 1, the limiting member is used for limiting the movement of the fixing block 72, the limiting member is a limiting block 76 fixedly disposed on the fixing block 72, a limiting groove 13 adapted to the limiting block 76 is disposed on the motor body 1, the limiting block 76 is located in the limiting groove 13 and slides, and the length of the limiting groove 13 is the effective movement length of the fixing block 72.

Referring to fig. 4 and 5, the self-locking assembly 75 includes a control rod 751 fixedly disposed at an end of the knob 74 close to the screw 73, a hollow slot 731 is formed in the screw 73, and an end of the control rod 751 penetrates through the screw 73 and is located in the hollow slot 731. A plurality of inserting blocks 752 are fixedly arranged at one end of the control rod 751, which is far away from the knob 74, the inserting blocks 752 are uniformly distributed at intervals along the circumferential direction of the control rod 751, a plurality of inserting grooves 732 matched with the inserting blocks 752 are formed in the screw rod 73, the inserting grooves 732 are positioned at one side of the idle rotation groove 731, which is far away from the screw rod 73, the inserting blocks 752 can be inserted into the inserting grooves 732, and meanwhile, the inserting blocks 752 can rotate and slide in the idle rotation groove 731. One end of the control rod 751 far away from the knob 74 is provided with a spring 753, and the spring 753 is always in a compressed state; a rebound groove 733 is further formed in the screw 73, the rebound groove 733 is located on the side, away from the idle rotation groove 731, of the insertion groove 732, the idle rotation groove 731, the insertion groove 732 and the rebound groove 733 are communicated, the spring 753 is located in the rebound groove 733, and one end of the spring is abutted to the control rod 751.

When a worker fixes the stator winding 6, firstly, the dovetail block 71 fixedly connected with the stator winding 6 is inserted into the dovetail groove 11 from the opening side of the dovetail groove 11, then the worker presses the knob 74 to the side close to the screw 73, the knob 74 drives the control rod 751 to move, the control rod 751 drives the insertion block 752 to be positioned in the idle rotation groove 731 to slide, the insertion block 752 is inserted into the insertion groove 732, the spring 753 is compressed, then the worker rotates the knob 74, the knob 74 can control the screw 73 to rotate, the screw 73 drives the fixing block 72 in threaded connection with the screw to move to the stator winding 6 side, the limiting block 76 fixedly connected with the fixing block 72 moves from one end of the limiting groove 13 to the other end, the fixing block 72 can be pressed on the end portion of the dovetail block 71, the dovetail block 71 is fixed into the dovetail groove 11, and the stator winding 6 is fixed into the motor body 1.

After the worker fixes the stator winding 6, after the worker loosens the knob 74, the spring 753 automatically pushes the control rod 751 to move away from one side of the screw rod 73, the control rod 751 drives the insertion block 752 fixedly connected with the control rod 751 to separate from the insertion groove 732, so that even if the worker mistakenly touches the knob 74, the knob 74 only idles and cannot drive the screw rod 73 to rotate, thereby improving the fault tolerance and stability of the fixing mechanism 7, and meanwhile, the insertion block 752 enables the control rod 751 and the knob 74 not to separate from the screw rod 73, thereby preventing the phenomenon that the control rod 751 and the knob 74 separate from the screw rod 73 to cause loss or installation.

The implementation principle of the brushless rotating motor in the embodiment of the application is as follows: when a worker installs the motor, firstly, the windings are uniformly wound on the stator outside the motor body 1 to form the stator windings 6, then the plurality of stator windings 6 are sequentially and uniformly distributed on the inner side wall of the motor body 1 through the dovetail blocks 71 and the dovetail grooves 11, then the worker rotates the knob 74 through an auxiliary tool such as a screwdriver and the like, the knob 74 controls the fixing mechanism 7 to fix the stator windings 6 to the inner side wall of the motor body 1, then the worker installs the rotor 3 and the end cover 2 on the motor body 1 respectively, and the installation of the motor can be completed, wherein the space inside the motor body 1 is narrow, and the process of installing the windings on the stator is separated from the motor body 1, so that the installation efficiency of the worker is greatly improved; if stator winding 6 appears the winding damaged, bad conditions such as fracture, at first staff antiport knob 74, fixed state is relieved to knob 74 control fixed establishment 7, the staff dismantles the stator winding 6 of damaged department afterwards, the stator winding 6 of renewing alone can, it not only is convenient for overhaul and maintain the stator winding 6 of motor, and alleviateed staff's intensity of labour greatly, the life-span and the stability of motor have been improved, and staff's installation, maintenance efficiency.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A brushless rotating electrical machine characterized by: the motor comprises a motor body (1), two end covers (2) detachably connected to two ends of the motor body (1), a rotor (3) arranged in the motor body (1), a plurality of stator windings (6) connected to the inner side wall of the motor body (1) in a sliding manner, and a fixing mechanism (7) arranged on the motor body (1) and used for fixing the stator windings (6) to the inner side wall of the motor body (1); two ends of the rotor (3) are respectively in rotary connection with the two end covers (2);

the fixing mechanism (7) comprises a dovetail block (71) fixedly arranged on the stator winding (6), a fixing block (72) connected in the motor body (1) in a sliding manner, a screw rod (73) connected to the fixing block (72) in a threaded manner, a knob (74) arranged at one end, far away from the fixing block (72), of the screw rod (73), and a limiting piece arranged between the fixing block (72) and the motor body (1) and used for limiting the movement of the fixing block (72);

a dovetail groove (11) is formed in the inner side wall of the motor body (1), the dovetail block (71) is inserted into the dovetail groove (11), one end of the dovetail groove (11) is closed, and the other end of the dovetail groove (11) is open; a sliding groove (12) is formed in the motor body (1), the fixing block (72) is located in the sliding groove (12) and slides, and the sliding groove (12) is communicated with the dovetail groove (11); one end of the screw rod (73) is in threaded connection with the motor body (1), and the other end of the screw rod is in threaded connection with the fixing block (72).

2. The brushless rotating machine according to claim 1, wherein: and a self-locking assembly (75) for controlling the connection or disconnection of the knob (74) and the screw rod (73) is arranged between the knob (74) and the screw rod (73).

3. The brushless electric motor according to claim 2, wherein: the self-locking assembly (75) comprises a control rod (751) fixedly arranged at one end, close to the screw rod (73), of the knob (74), an insertion block (752) fixedly arranged at one end, far away from the knob (74), of the control rod (751), and a spring (753) arranged at one end, far away from the knob (74), of the control rod (751);

empty rotary groove (731), inserting groove (732) and rebound groove (733) are formed in screw rod (73), empty rotary groove (731), inserting groove (732) and rebound groove (733) are communicated, one end of control rod (751) penetrates through screw rod (73) and is located in empty rotary groove (731), inserting block (752) can rotate and slide in empty rotary groove (731), inserting groove (732) is located on one side, far away from screw rod (73), of empty rotary groove (731), inserting block (752) can be inserted into inserting groove (732), rebound groove (733) is located on one side, far away from empty rotary groove (731), spring (753) is located in rebound groove (733) and abuts against control rod (751), and spring (753) is in a compression state all the time.

4. A brushless rotating electric machine according to claim 3, characterized in that: the number of the insertion blocks (752) is set to be multiple, and the insertion blocks (752) are evenly distributed along the circumferential direction of the control rod (751) at intervals.

5. The brushless electric motor according to claim 1, wherein: the limiting piece is a limiting piece (76) fixedly arranged on the fixing block (72), a limiting groove (13) is formed in the motor body (1), and the limiting piece (76) is located in the limiting groove (13) and slides.

6. The brushless electric motor according to claim 1, wherein: and a chamfer (721) is formed on one side of the fixed block (72) close to the dovetail block (71).

7. The brushless electric motor according to claim 1, wherein: and a tool groove (741) is formed in one side, away from the screw rod (73), of the knob (74).

8. The brushless rotating machine according to any one of claims 1 to 7, wherein: the outer side wall of the motor body (1) is fixedly provided with a plurality of radiating fins (5).

9. The brushless electric motor according to claim 1, wherein: and a bearing (4) is arranged between the rotor (3) and the end cover (2).