CN114337055B - Brushless Rotary Motor - Google Patents

Abstract

This application relates to a brushless rotary motor, and relates to the field of brushless motors. The brushless rotary motor includes a motor body, two end covers detachably connected to both ends of the motor body, a rotor arranged inside the motor body, and a plurality of sliding Stator windings connected to the inner wall of the motor body, and a fixing mechanism arranged on the motor body for fixing the stator windings to the inner wall of the motor body; the two ends of the rotor are respectively connected to the two end covers in rotation; the The fixing mechanism includes a dovetail block fixed on the stator winding, a fixed block slidingly connected in the motor body, a screw threaded on the fixed block, a knob arranged at the end of the screw away from the fixed block, and a fixed block and a motor. The limit piece between the body. The application has the effects of facilitating the installation of windings on the stator, the inspection and maintenance of the stator windings of the motor, the improvement of the efficiency of installation and inspection of the motor, and the enhancement of the stability of the operation of the motor.

Description

Brushless Rotary Motor

technical field

The present application relates to the field of brushless motors, in particular to a brushless rotating motor.

Background technique

Brushless motor has the advantages of no brush, low interference, smooth operation, low noise, and small steady-state speed error. Although its development time in my country is short, it has developed rapidly with the maturity and perfection of technology. , medical equipment, household appliances, electric vehicles and many other fields have been widely used.

At present, a brushless motor includes a casing, end covers arranged at both ends of the casing, a controller arranged inside the casing, a plurality of stator windings arranged inside the casing, and a rotor arranged inside the casing, wherein the stator in the stator winding is connected to the casing The inner wall is usually formed in one piece, and in order to ensure the stability of the motor operation, the stator is usually fixed to the inner wall of the housing, so when installing the winding on the stator, the operation is more cumbersome, and once the stator or winding is damaged, broken, etc., It is inconvenient for the staff to replace or repair the stator winding.

Contents of the invention

In order to facilitate the installation of windings on the stator, facilitate the inspection and maintenance of the stator windings of the motor, improve the efficiency of installation and inspection of the motor, and enhance the stability of the operation of the motor, the application provides a brushless rotating motor.

A brushless rotating motor provided by this application adopts the following technical solution:

A brushless rotary motor, comprising a motor body, two end covers detachably connected to both ends of the motor body, a rotor arranged inside the motor body, a plurality of stator windings slidably connected to the inner wall of the motor body, and a The fixing mechanism on the motor body is used to fix the stator winding to the inner wall of the motor body; the two ends of the rotor are respectively connected to the two end covers in rotation.

By adopting the above technical solution, when the staff installs the motor, firstly, the winding is evenly wound on the stator to form a stator winding, and then a plurality of stator windings are evenly arranged in a circle on the inner side wall of the motor body in turn, and are fixed by the fixing mechanism. The stator winding is fixed to the inner wall of the motor body, and then the staff installs the rotor and the end cover on the motor body respectively to complete the installation of the motor. The space inside the motor body is relatively narrow, and the process of installing the winding on the stator is separated from the The motor body is installed, which greatly improves the installation efficiency of the staff; if the stator winding is damaged or broken, the fixed state of the fixing mechanism can be released, and then the damaged stator winding can be disassembled, and a new stator can be replaced separately. The winding is enough, which not only facilitates the inspection and maintenance of the stator winding of the motor, but also greatly reduces the labor intensity of the staff, improves the life and stability of the motor, and the efficiency of installation and maintenance of the staff.

Optionally, the fixing mechanism includes a dovetail block fixed on the stator winding, a fixing block slidably connected in the motor body, a screw threaded on the fixing block, a knob arranged at the end of the screw rod away from the fixing block, and A limiting member arranged between the fixed block and the motor body for limiting the movement of the fixed block;

The inner wall of the motor body is provided with a dovetail groove, the dovetail block is plugged into the dovetail groove, one end of the dovetail groove is closed, and the other end is open; the motor body is provided with a sliding groove, the The fixed block slides in the sliding groove, and the sliding groove communicates with the dovetail groove; one end of the screw is threaded with the motor body, and the other end is threaded with the fixed block.

By adopting the above-mentioned technical scheme, when the worker fixes the stator winding, firstly insert the dovetail block fixedly connected with the stator winding into the dovetail groove from the opening side of the dovetail groove, and then the worker turns the knob, which drives the screw to rotate, and the screw drives it The threaded fixed block moves to the side of the stator winding and is pressed against the end of the dovetail block to fix the dovetail block into the dovetail slot, thereby fixing the stator winding fixedly connected with the dovetail block to the motor body; vice versa , the staff can turn the knob in the opposite direction to release the fixed state of the fixing mechanism, and at the same time, the limit piece acts as a limit to the movement of the fixed block, which is convenient for the staff to realize the fixed or unfixed state of the stator winding, which is convenient for the staff operate.

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

By adopting the above technical scheme, when the self-locking component is in the disconnected state, even if the staff touches the knob by mistake, the knob will only rotate idly and will not drive the screw to rotate; when the self-locking component is in the connected state, the staff will turn the knob, and the The screw rod can be driven to rotate, thereby improving the stability of the fixing mechanism.

Optionally, the self-locking assembly includes a control rod fixed at the end of the knob close to the screw rod, a plug block fixed at the end of the control rod away from the knob, and a spring arranged at the end of the control rod away from the knob;

The inside of the screw is provided with an idle slot, a plug slot, and a rebound slot. The idle slot, the plug slot, and the rebound slot are connected. One end of the control rod runs through the screw and is located in the idle slot. The plug block can Rotate and slide in the idling groove, the insertion groove is located on the side away from the screw rod of the idling groove, the insertion block can be inserted into the insertion groove, and the rebound groove is located on the side of the idling groove away from the idling groove On one side, the spring is located in the rebound groove and one end abuts against the control rod, and the spring is always in a compressed state.

By adopting the above-mentioned technical scheme, when the worker needs to turn the screw, the worker first presses the knob to the side close to the screw, and then the knob drives the control rod to move, and the control rod drives the plug-in block to slide in the idle groove, so that the plug-in block is inserted When the staff turns the knob, the knob can control the rotation of the screw rod; when the staff releases the knob, the spring automatically pushes the control rod to move away from the screw rod, and the control rod drives it to be fixed The connected plug-in block is separated from the plug-in slot, so that even if the staff accidentally touches the knob, it will not cause the rotation of the screw, thereby improving the stability of the motor; and the plug-in block prevents the control rod and the knob from being separated from the screw rod, so it is not easy Control rods and knobs are lost or difficult to install due to disengagement from the screw rod.

Optionally, the number of the plug-in blocks is set to be multiple, and the multiple plug-in blocks are evenly spaced along the circumference of the control rod.

By adopting the above technical scheme, when the plug-in block and the slot are in a separated state, after turning the knob, the plug-in block and the slot will be misaligned, and when the staff needs to turn the screw, they need to insert the plug-in block into the slot Inside, multiple plug-in blocks are evenly spaced, so the staff only need to turn a small angle to insert one of the plug-in blocks into the slot, and the rest of the plug-in blocks are plugged into the slot, so as to realize The connection between the knob and the screw.

Optionally, the limiting member is a limiting block fixed on the fixed block, a limiting slot is opened on the motor body, and the limiting block slides in the limiting slot.

By adopting the above technical scheme, when the limit block moves from one end of the limit slot to the other end, the moving length is the effective moving length of the fixed block, so that it is convenient for the staff to control the end of the fixed block and the dovetail block to abut or Separated, and then it is convenient to control the state of fixing and unfixing of the fixing mechanism.

Optionally, a chamfer is provided on a side of the fixing block close to the dovetail block.

By adopting the above technical scheme, the chamfer plays the role of guiding and positioning for the fixed block to extend out of the sliding groove, so that the fixed block can extend out of the sliding groove, thereby pressing on the end of the dovetail block, and then exerting force on the dovetail block and the stator winding. A certain prestress makes the stator winding not easy to slide in the dovetail slot and improves the stability of the stator winding.

Optionally, a tool groove is provided on the side of the knob away from the screw rod.

By adopting the above technical solution, the tool slot is convenient for inserting tools such as a screwdriver to assist in turning the knob when the worker turns the knob, thereby providing convenience for the worker to turn the knob.

Optionally, a plurality of cooling fins are fixed on the outer wall of the motor body.

By adopting the above technical solution, the cooling fins dissipate the heat generated inside the motor in a timely manner, ensuring a good heat dissipation effect of the motor, thereby making the internal components of the motor less likely to be damaged and prolonging its service life.

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

By adopting the above technical solution, the bearing not only supports the rotor, but also reduces the wear between the rotor and the end cover, and improves the service life of the rotor and the 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 relatively narrow, and the process of installing the winding on the stator is carried out separately from the motor body, which greatly improves the installation efficiency of the staff;

2. If the stator winding is damaged or broken, the fixed state of the fixing mechanism can be released, and then the damaged stator winding can be disassembled, and the new stator winding can be replaced separately, which is not only convenient for the stator winding of the motor Carry out inspection and maintenance, and greatly reduce the labor intensity of the staff, improve the life and stability of the motor, as well as the installation and maintenance efficiency of the staff;

3. The limiter acts as a limiter for the movement of the fixed block, which is convenient for the staff to realize the state of fixing or unfixing the stator winding, and is convenient for the staff to operate;

4. When the self-locking component is in the disconnected state, even if the staff accidentally touches the knob, the knob will only rotate idly and will not drive the screw to rotate; when the self-locking component is in the connected state, the staff can turn the knob, and the knob can drive the screw to rotate , thereby improving the stability of the fixing mechanism.

Description of drawings

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

Fig. 2 is a schematic diagram showing an exploded structure of a brushless rotating motor;

Fig. 3 is a partial sectional view showing a brushless rotating electrical machine;

Fig. 4 is a partial sectional view showing a fixing mechanism;

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

Explanation of reference signs: 1. Motor body; 11. Dovetail groove; 12. Sliding groove; 13. Limiting groove; 2. End cover; 3. Rotor; 4. Bearing; 5. Heat sink; 6. Stator winding; 7. Fixing mechanism; 71. Dovetail block; 72. Fixed block; 721. Chamfering; 73. Screw; 731. Idling groove; 732. Insertion groove; 733. Rebound groove; 75, self-locking assembly; 751, control rod; 752, plug block; 753, spring; 76, limit block.

Detailed ways

The present application will be described in further detail below in conjunction with accompanying drawings 1-5.

The embodiment of the present application discloses a brushless rotating electrical machine. Referring to FIG. 1 and FIG. 2 , the brushless rotating motor includes a motor body 1 , and end covers 2 are respectively provided at both ends of the motor body 1 , and the end covers 2 and the motor body 1 are connected by bolts. The inside of the motor body 1 is provided with a rotor 3, and the two ends of the rotor 3 are rotatably connected with the two end covers 2; a bearing 4 is provided between the rotor 3 and the end cover 2, and the bearing 4 is not only used to support the rotor 3, but also Moreover, it is used to reduce the wear between the rotor 3 and the end cover 2 and improve the service life of the rotor 3 and the end cover 2 . The outer wall of the motor body 1 is fixed with a plurality of cooling fins 5, and the plurality of cooling fins 5 are evenly spaced along the circumference of the motor body 1. The cooling fins 5 are used to dissipate the heat generated inside the motor in time, ensuring Good heat dissipation effect of the motor.

Referring to Fig. 2 and Fig. 3, a plurality of stator windings 6 are arranged on the inner wall of the motor body 1, and the plurality of stator windings 6 are arranged on the inner wall of the motor body 1 in a circular shape, and each stator winding 6 is arranged along the length of the motor. The direction is slidingly connected with the inner wall of the motor body 1 . The motor body 1 is provided with a plurality of fixing mechanisms 7 corresponding to the plurality of stator windings 6 , and the fixing mechanisms 7 are used to fix the stator windings 6 to the inner wall of the motor body 1 .

When the staff installs the motor, firstly, the windings are evenly wound on the stator on the outside of the motor body 1 to form the stator winding 6, and then a plurality of stator windings 6 are evenly arranged in a circular shape on the inner wall of the motor body 1, and passed through the fixing mechanism 7. Fix the stator winding 6 to the inner wall of the motor body 1, and then install the rotor 3, bearing 4, and end cover 2 on the motor body 1 to complete the installation of the motor; if the stator winding 6 is damaged , breakage and other adverse conditions, the fixed state of the fixing mechanism 7 can be released, and then the stator winding 6 at the damaged part can be disassembled, and a new stator winding 6 can be replaced separately, which repairs, maintains and replaces the stator winding 6 of the motor More convenient.

3 and 4, the fixing mechanism 7 includes a dovetail block 71 fixed on the stator winding 6, the inner wall of the motor body 1 is provided with a dovetail slot 11 along its length direction, and the dovetail block 71 is plugged into the dovetail slot 11, And the dovetail groove 11 is closed at one end and opened at the other end. The motor body 1 is provided with a plurality of sliding slots 12, the sliding slots 12 communicate with the dovetail slots 11, and the plurality of sliding slots 12 correspond to the plurality of stator windings 6 one by one, and the opening direction of the sliding slots 12 is the same as that of the dovetail slots 11. The direction of opening is vertical, the sliding groove 12 is provided with a fixed block 72, the fixed block 72 can slide in the sliding groove 12, and the fixed block 72 can compress the end of the dovetail block 71 simultaneously. The side of the fixed block 72 close to the dovetail block 71 is also provided with a chamfer 721, and the chamfer 721 is used to facilitate the fixed block 72 to extend out of the sliding groove 12, thereby compressing the end of the dovetail block 71, and then to the dovetail block 71 and A certain prestress is applied to the stator winding 6, so that the stator winding 6 is not easy to slide in the dovetail groove 11, and the stability of the stator winding 6 is improved.

4 and 5, the end of the fixed block 72 away from the stator winding 6 is provided with a screw 73, one end of the screw 73 is threaded with the motor body 1, the other end is threaded with the fixed block 72, and the screw 73 is threaded with the motor body 1 One end protrudes from the outside of the motor body 1 . The end of the screw rod 73 away from the fixed block 72 is provided with a knob 74 at intervals, and a self-locking assembly 75 is arranged between the knob 74 and the screw rod 73. The self-locking assembly 75 is used to control the connection or disconnection of the knob 74 and the screw rod 73, and is used to prevent The staff misoperates the button to improve the stability of the fixing mechanism 7 . Knob 74 is provided with tool slot 741 away from the side of screw rod 73, and tool slot 741 is used for when needing to turn knob 74 for the staff, conveniently inserts the tool of auxiliary turning knob 74 such as screwdriver, provides convenience for staff turning knob 74.

Referring to Fig. 4 and Fig. 5, a limiter is also provided between the fixed block 72 and the motor body 1, and the limiter is used to limit the movement of the fixed block 72, and the limiter is fixed on the fixed block 72. The limit block 76, the motor body 1 is provided with a limit groove 13 compatible with the limit block 76, the limit block 76 slides in the limit groove 13, and the length of the limit groove 13 is the effective length of the fixed block 72. Move length.

Referring to FIGS. 4 and 5 , the self-locking assembly 75 includes a control rod 751 fixed at one end of the knob 74 close to the screw rod 73 . The screw rod 73 has an idle groove 731 inside, and one end of the control rod 751 passes through the screw rod 73 and is located in the idle groove 731 . The end of the control rod 751 away from the knob 74 is fixed with a plurality of plug-in blocks 752, and the plurality of plug-in blocks 752 are evenly spaced along the circumference of the control rod 751, and the inside of the screw 73 is provided with a plurality of plug-in blocks 752. Inserting slot 732, the inserting slot 732 is located on the side of the idler slot 731 away from the screw rod 73, the inserting block 752 can be inserted into the inserting slot 732, and the inserting block 752 can rotate and slide in the idler slot 731 at the same time. The end of the control rod 751 away from the knob 74 is provided with a spring 753, and the spring 753 is always in a compressed state; the inside of the screw rod 73 is also provided with a rebound groove 733, and the rebound groove 733 is located on the side of the insertion groove 732 away from the idling groove 731, and idling The slot 731 , the insertion slot 732 , and the rebound slot 733 are in communication with each other. The spring 753 is located in the rebound slot 733 and one end abuts against the control rod 751 .

When the worker fixes the stator winding 6, first insert the dovetail block 71 fixedly connected with the stator winding 6 into the dovetail groove 11 from the opening side of the dovetail groove 11, and then the worker presses the knob 74 to the side close to the screw rod 73, and the knob 74 Drive the control rod 751 to move, the control rod 751 drives the insertion block 752 to slide in the idle groove 731, so that the insertion block 752 is inserted into the insertion groove 732, and the spring 753 is compressed at the same time, then the staff turns the knob 74, the knob 74 can control and drive the screw rod 73 to rotate, and the screw rod 73 drives the fixed block 72 threadedly connected with it to move to the stator winding 6 side, and the limit block 76 fixedly connected with the fixed block 72 moves from one end of the limit groove 13 to the other end , the fixing block 72 can be pressed against the end of the dovetail block 71 to realize fixing the dovetail block 71 into the dovetail groove 11 , thereby realizing fixing the stator winding 6 into the motor body 1 .

After the worker fixes the stator winding 6, when the worker loosens the knob 74, the spring 753 automatically pushes the control rod 751 to move away from the side of the screw rod 73, and the control rod 751 drives the plug-in block 752 fixedly connected with it to break away from the plug-in slot 732 , so that even if the staff touches the knob 74 by mistake, the knob 74 will only rotate idly and will not drive the screw 73 to rotate, thus improving the fault tolerance and stability of the fixing mechanism 7. It cannot be separated from the screw rod 73, so that the phenomenon that the control rod 751 and the knob 74 are separated from the screw rod 73 to cause loss or difficulty in installation is not easy to occur.

The implementation principle of a brushless rotating motor in the embodiment of the present application is as follows: when the staff installs the motor, first, the windings are evenly wound on the stator outside the motor body 1 to form a stator winding 6, and then a plurality of stator windings 6 are sequentially passed through the dovetail. Blocks 71 and dovetail grooves 11 are evenly arranged on the inner wall of the motor body 1, and then the staff turns the knob 74 with auxiliary tools such as a screwdriver, and the knob 74 controls the fixing mechanism 7 to fix the stator winding 6 to the inner wall of the motor body 1, and then work The installation of the motor can be completed by installing the rotor 3 and the end cover 2 on the motor body 1 respectively. The space inside the motor body 1 is relatively narrow, and the process of installing the winding on the stator is carried out without the motor body 1, thereby greatly improving Improve the installation efficiency of the staff; if the stator winding 6 has winding damage, breakage and other adverse conditions, first the staff reversely turns the knob 74, the knob 74 controls the fixing mechanism 7 to release the fixed state, and then the staff disassembles the damaged stator winding 6 Next, just replace the new stator winding 6 alone, which not only facilitates the overhaul and maintenance of the stator winding 6 of the motor, but also greatly reduces the labor intensity of the staff, improves the life and stability of the motor, and the installation of the staff , Overhaul efficiency.

All of the above are preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made according to the structure, shape, and principle of the application should be covered by the protection scope of the application. Inside.

Claims (9)

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).

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