CN114244005A

CN114244005A - Brushless motor with built-in drive

Info

Publication number: CN114244005A
Application number: CN202111556017.1A
Authority: CN
Inventors: 缪建国
Original assignee: Wuxi Shiyuan Motor Co ltd
Current assignee: Wuxi Shiyuan Motor Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-25
Anticipated expiration: 2041-12-17
Also published as: CN114244005B

Abstract

The application relates to a brushless motor with a built-in drive, which belongs to the field of brushless motors and comprises a motor and a base arranged at the bottom of the motor and used for fixing the motor, wherein a cavity is formed in the base, and a communicating hole is formed in the inner peripheral surface of the base; the base is fixed with an inflatable cushion through the cavity; an air suction pump communicated with the inflatable cushion is fixed on the peripheral surface of the base. This application has the effect that reduces vibration in the motor working process.

Description

Brushless motor with built-in drive

Technical Field

The present application relates to the field of brushless motors, and more particularly, to a brushless motor with built-in drive.

Background

At present, a brushless motor consists of a motor main body and a driver, and the brushless motor does not add a starting winding on a rotor, and does not generate oscillation and step-out when the load suddenly changes.

In the related art, reference may be made to chinese utility model patent with publication number CN213341925U, which discloses a brushless motor with built-in drive, comprising a motor main body, a motor base, a circuit board and a drive board; the front of motor base is equipped with the center post, the center post is equipped with the post hole that runs through motor base, be equipped with the bearing in the center post, motor body is connected with motor base, motor body's pivot is passed through the post hole and is got into in the center post, the pivot is connected with the bearing, the circuit board cover is located outside the center post and is located motor base's front and motor body between, the circuit board is connected with motor body electricity, motor base's the back is equipped with the card firmware, the drive plate passes through the back of card firmware and installs to motor base, be equipped with a plurality of electronic component on the drive plate, the circuit board is connected with the drive plate electricity.

In view of the above-described related art, the inventors consider that the following drawbacks exist: the motor often has the condition of strong vibration in the working process, and the motor may generate rigid collision with the inner wall of the mounting cavity on the peripheral side in the vibration process, so that the peripheral surface of the motor is damaged.

Disclosure of Invention

In order to solve the problem that vibration is easy to occur in the working process of a motor, the application provides a brushless motor with built-in driving.

The application provides a brushless motor of built-in drive adopts following technical scheme:

a built-in driven brushless motor comprises a motor and a base arranged at the bottom of the motor and used for fixing the motor, wherein a cavity is formed in the base, and a communication hole is formed in the inner peripheral surface of the base; the base is fixed with an inflatable cushion through a cavity; and an air suction pump communicated with the inflatable cushion is fixed on the peripheral surface of the base.

Through adopting above-mentioned technical scheme, when the motor vibration appeared, blast air in to the inflatable packer through the suction pump, the inflatable packer inflation and wrap up in motor week side to for the motor provides the shock attenuation effect, reduce the motor vibration in-process and the base and take place the possibility of rigid collision.

Optionally, a storage battery is arranged at the top of the base; a power supply mechanism used for electrically connecting the air suction pump and the storage battery is arranged in the base; the power supply mechanism comprises a mounting box fixed on the inner circumferential surface of the base, and a butting box and a butting column are connected in the base in a sliding manner along the length direction of the base; a plurality of sliding plates are connected in the abutting box in a sliding manner; a plurality of first switch fixed sheets are fixed on the inner wall of the abutting box along the length direction of the abutting box, and a first switch moving sheet for electrically contacting with the first switch fixed sheets is fixed on the side wall of the sliding plate; the first switch stator is electrically connected with the air suction pump and the storage battery respectively; a limiting component for limiting the sliding plate is arranged between the mounting box and the sliding plate; a moving component for driving the sliding plate to move is arranged in the abutting box; and a conductive assembly for conducting the air suction pump and the storage battery is arranged between the abutting box and the mounting box.

By adopting the technical scheme, after the motor vibrates, the motor can apply pressure to the abutting columns and push the abutting columns to move, the limiting component relieves the limiting on the sliding plates, meanwhile, the abutting boxes drive the sliding plates to move through the moving component, and after the sliding plates move sequentially, the sliding plates do not continue to block the abutting columns, so that the abutting columns drive the abutting boxes to move; after the butt joint box moves, the air suction pump is conducted with the storage battery through the conductive assembly, so that the air suction pump works after the motor vibrates, and a damping effect is provided for the motor.

Optionally, the limiting assembly comprises a plurality of limiting pieces fixed on the inner wall of the mounting box; the side wall of the sliding plate is provided with a sliding groove, and the sliding plate is in sliding fit with the limiting sheet through the sliding groove; the bottom surface of the pressing column is connected with a pressing plate in a sliding manner along the length direction of the mounting box.

By adopting the technical scheme, after the abutting plate abuts against the sliding plate, the impact force generated after the abutting column is abutted by the motor can be relieved through the movement of the abutting plate. By providing a plurality of sliding plates, the possibility of airbag inflation due to the motor accidentally contacting the abutment post is reduced.

Optionally, the length of the plurality of limiting pieces gradually increases from the box opening of the mounting box to the box bottom of the mounting box.

By adopting the technical scheme, as the length of the limiting sheet is gradually increased, the time for separating the sliding plate away from one side of the box opening from the limiting sheet is increased; through setting up the spacing piece that increases gradually, the sliding plate of being convenient for separates with spacing piece in proper order to need the motor to strike the butt joint post many times after, just enable a plurality of slide and all take place to remove, reduce the motor and touch the butt joint post by mistake and cause the expanded possibility of gasbag.

Optionally, the bottom surface of the abutting column is provided with a mounting groove, and the abutting plate is connected with the abutting column in a sliding manner along the length direction of the mounting box through the mounting groove; and a compression spring is fixed on one side of the abutting plate, which is far away from the sliding plate, and one end of the compression spring, which is far away from the bottom plate, is fixedly connected with the abutting column through the mounting groove.

By adopting the technical scheme, the compression spring exerts the elastic force close to one side of the sliding plate on the abutting plate, so that the abutting plate can be driven to reset when contacting the sliding plate and contracting inwards.

Optionally, the moving assembly includes a plurality of electromagnets fixed to the side wall of the abutting box, and a magnetic attraction sheet for attracting the electromagnets is fixed to one side of the sliding plate, which is close to the electromagnets.

Through adopting above-mentioned technical scheme, the electro-magnet of circular telegram can produce the adsorption to the piece of magnetism to the drive sliding plate removes, and the sliding plate removes the back, can relieve the effect of blockking to the board.

Optionally, guide pieces are fixed on two sides of the sliding plate respectively, guide grooves are formed in the opposite inner sides of the abutting box respectively, and the guide pieces are in sliding fit with the abutting box through the guide grooves; one side of the guide piece, which is far away from the switch stator piece, is fixed with a return spring, and one end of the return spring, which is far away from the guide piece, is fixedly connected with the butt box through the guide groove.

Through adopting above-mentioned technical scheme, reset spring exerts for the guide plate to keeping away from switch stator one side's elasticity, and the electro-magnet outage back of being convenient for resets to keeping away from electro-magnet one side through reset spring drive slide to make switch rotor one and the separation of switch stator.

Optionally, the conductive assembly comprises a second switch stator fixed on the inner wall of the mounting box, and the electromagnets are electrically connected with the second switch stator respectively; a second switch moving piece which is used for being in electric contact with the second switch fixed piece is connected in the mounting box in a sliding mode along the length direction of the sliding plate; the second switch stator is electrically connected with the storage battery; a transmission piece is connected in the mounting box in a sliding manner along the length direction of the mounting box; the side wall of the transmission piece is provided with a through hole for penetrating the second switch moving piece, one side of the through hole, which is far away from the sliding plate, is fixed with an insertion piece, and one side of the second switch moving piece, which is far away from the butt box, is provided with an insertion groove for being inserted with the insertion piece.

By adopting the technical scheme, the transmission piece provides a limiting effect for the second switch moving piece; after the plurality of sliding sheets are contacted with the electromagnet, the resisting plate is not hindered by the sliding sheets; the butt-joint post receives the butt-pressure effect back that the motor was applyed, can remove to and the drive strap contact to promote the drive strap and remove, thereby remove the limiting displacement to switch moving plate two, the separation of switch moving plate two and switch stator two of being convenient for, make the electro-magnet lose magnetic force, and then remove the adsorption of electro-magnet to the sliding plate, the sliding plate of being convenient for resets.

Optionally, the mounting box is connected with a connecting sheet through the third sliding chute in a sliding manner along the width direction of the sliding plate; the opposite inner sides of the connecting sheet and the switch moving sheet II are respectively provided with a first inclined plane; the mounting box is connected with a butting piece in a sliding manner along the length direction of the sliding plate; the opposite inner sides of the abutting sheet and the connecting sheet are respectively provided with a second inclined surface; the butt box lateral wall is fixed with the wedge, the wedge is close to the tip of motor one side and the butt piece is kept away from the tip of motor one side is seted up inclined plane three respectively.

Through adopting above-mentioned technical scheme, after the butt box upwards resets, the wedge and the butt piece contact of butt box lateral wall to promote the connection piece through the butt piece and remove, connection piece promotion switch movable plate two resets, thereby makes switch movable plate two and the double contact of switch stator.

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

1. when the motor vibrates, the air is blown into the inflatable cushion by the air suction pump, and the inflatable cushion expands and wraps the periphery of the motor, so that the damping effect is provided for the motor, and the possibility of rigid collision between the motor and the base in the vibration process of the motor is reduced;

2. after the motor vibrates, the motor can apply pressure to the abutting columns and push the abutting columns to move, the limiting component removes limiting on the sliding plates, meanwhile, the abutting boxes drive the sliding plates to move through the moving component, and after the sliding plates move sequentially, the sliding plates do not continuously block the abutting columns, so that the abutting columns drive the abutting boxes to move; after the abutting box moves, the air suction pump is conducted with the storage battery through the conductive assembly, so that the air suction pump works after the motor vibrates, and a damping effect is provided for the motor;

3. after the butt box resets upwards, the wedge of butt box lateral wall contacts with the butt piece to promote the connection piece through the butt piece and remove, connection piece promotion switch movable plate two resets, thereby makes switch movable plate two and the switch stator piece double contact.

Drawings

FIG. 1 is a cross-sectional view of a base according to an embodiment of the present application.

Fig. 2 is a sectional view of a mounting box according to an embodiment of the present application.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a sectional view taken along line B-B in fig. 2.

Figure 5 is a cross-sectional view of a compression post according to an embodiment of the present application.

Fig. 6 is a sectional view of a mounting box according to an embodiment of the present application.

Fig. 7 is an enlarged schematic view at C in fig. 2.

Reference numerals: 1. a motor; 11. a limiting sheet; 12. a second spring; 13. perforating; 14. a plug-in sheet; 15. inserting grooves; 16. a third chute; 17. connecting sheets; 2. a base; 21. a cavity; 22. a communicating hole; 23. an inflatable cushion; 24. an air suction pump; 25. a storage battery; 26. abutting the sheet; 3. a power supply mechanism; 31. a guide piece; 32. a guide groove; 33. a return spring; 34. a first sliding chute; 35. a first spring; 36. a second chute; 37. a second inclined plane; 4. mounting a box; 41. a sliding hole; 42. a pressing column; 43. a driving strap; 44. a second switch stator; 45. a second switch moving plate; 46. a fourth chute; 5. a butt box; 51. a sliding plate; 52. a sliding groove; 53. an electromagnet; 54. a magnetic attraction sheet; 55. a fixing sheet; 56. a first switch moving plate; 57. a first inclined plane; 6. a wedge block; 61. a third inclined plane; 62. a fourth inclined plane; 63. a resisting plate; 64. a compression spring; 65. and (4) mounting the groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a brushless motor with a built-in drive. Referring to fig. 1, a brushless motor with built-in driving includes a motor 1 and a base 2 provided at a bottom of the motor 1 to fix the motor 1. The cross section of the base 2 is U-shaped; a cavity 21 is formed in the base 2, and a communication hole 22 communicated with the cavity 21 is formed in the inner circumferential surface of the base 2 along the circumferential direction. The base 2 is fixed with an inflatable cushion 23 through the cavity 21. An air pump 24 is fixed on the peripheral surface of the base 2, and the air outlet end of the air pump 24 is communicated with the inflatable cushion 23. The base 2 provides a reinforcing effect to the motor 1, and when the vibration frequency of the motor 1 exceeds a predetermined frequency, the suction pump 24 is actuated and inflates air into the inflatable cushion 23, thereby inflating the inflatable cushion 23 and providing a shock-absorbing effect to the motor 1.

Referring to fig. 2 and 3, a storage battery 25 is provided on the top of the base 2; the base 2 is provided therein with a power supply mechanism 3 for electrically connecting the suction pump 24 and the battery 25. The power supply mechanism 3 comprises a mounting box 4 which is embedded and fixed on the inner circumferential surface of the base 2, and a butting box 5 and a butting column 42 are connected in the base 2 in a sliding manner along the length direction of the base; one side of the abutting column 42 abuts against the side wall of the motor 1, and the other side abuts against one side of the abutting box 5 close to the motor 1; when the motor 1 vibrates, the motor 1 presses against the pressing column 42, and the pressing column 42 pushes the abutting box 5 to move. Elastic pieces for driving the abutting box 5 to reset towards one side close to the motor 1 are respectively fixed on two sides of the abutting box 5 and two sides of the abutting column 42. A plurality of limiting sheets 11 are fixed on the inner wall of the mounting box 4 along the length direction of the mounting box; the lengths of the limiting pieces 11 are gradually increased from the box opening of the mounting box 4 to the box bottom of the mounting box 4; in this embodiment, the number of the limiting pieces 11 is four. The side wall of the butt joint box 5 is provided with a strip-shaped sliding hole 41 which is used for being connected with the limiting piece 11 in a sliding manner; since the length of the stopper piece 11 is gradually increased, the time for separating the stopper piece 11 from the slider is gradually increased.

Referring to fig. 2 and 3, a plurality of sliding plates 51 are slidably attached to the inside of the abutting box 5. The side wall of the sliding plate 51 close to one side of the sliding hole 41 is provided with a sliding groove 52, and the sliding plate 51 is in sliding fit with the limiting sheet 11 through the sliding groove 52; when the stopper 11 is located in the slide groove 52, the slide plate 51 is in a stopped state, and the slide plate 51 cannot move in the width direction of the contact box 5. A plurality of electromagnets 53 are fixed on the side wall of the abutting box 5 along the length direction of the abutting box, and a magnetic suction sheet 54 for adsorbing the electromagnets 53 is fixed on one side of the sliding plate 51 close to the electromagnets 53; when the slide plate 51 loses its position-limiting function, it moves toward the electromagnet 53 by the attraction of the electromagnet 53. A plurality of first switch fixed sheets are fixed on the inner wall of the abutting box 5 along the length direction of the abutting box, and a first switch moving sheet 56 for electrically contacting with the first switch fixed sheets is fixed on the side wall of the sliding plate 51; after the sliding plate 51 moves under the action of the electromagnet 53, the first switch moving piece 56 is electrically contacted with the first switch fixed piece; in this embodiment, the number of the sliding plate 51, the electromagnet 53, and the first switch stator is four. Two adjacent switch stator pieces I are electrically connected; the first switch stator near the box opening is electrically connected with the air suction pump 24. The storage battery 25 is fixed in the mounting box 4, and the first switch stator close to the box bottom is electrically connected with the storage battery 25; when the switch moving sheets 56 are all in electric contact with the switch fixed sheets, the storage battery 25 is conducted with the air suction pump 24, and the air suction pump 24 injects air into the air bag.

Referring to fig. 3 and 4, guide pieces 31 are respectively fixed on two sides of the sliding plate 51, guide grooves 32 are respectively formed on opposite inner sides of the abutting box 5, and the guide pieces 31 are in sliding fit with the abutting box 5 through the guide grooves 32; a return spring 33 is fixed on one side of the guide sheet 31 far away from the switch stator sheet, and one end of the return spring 33 far away from the guide sheet 31 is fixedly connected with the abutting box 5 through a guide groove 32; the return spring 33 is used to drive the slide plate 51 to move away from the electromagnet 53.

Referring to fig. 3 and 5, the bottom surface of the pressing column 42 is provided with an installation groove 65, and the pressing column 42 is connected with a pressing plate 63 in a sliding manner along the length direction of the installation box 4 through the installation groove 65; and a compression spring 64 is fixed on one side of the abutting plate 63, which is far away from the sliding plate 51, and one end of the compression spring 64, which is far away from the abutting plate 63, is fixedly connected with the abutting column 42 through a mounting groove 65. When the pressing column 42 moves toward the side close to the sliding plate 51 under the vibration of the motor, the pressing column 42 first contacts the sliding plate 51 and is pressed toward the side close to the motor 1 by the sliding plate 51, so that the compression spring 64 is in a contracted state. When the sliding plate 51 is attracted by the electromagnet 53, the sliding plate 51 no longer blocks the abutting plate 63, and the abutting plate 63 penetrates through the sliding plate 51 and continues to abut against the adjacent sliding plate 51; when all the sliding plates 51 are attracted to the electromagnets 53, the abutting plates 63 can penetrate all the sliding plates 51.

Referring to fig. 2 and 5, a second switch stator 44 is fixedly embedded in the inner wall of the mounting box 4, and the electromagnets 53 are electrically connected with the second switch stator 44 respectively. A second switch moving piece 45 for electrically contacting with the second switch fixed piece 44 is connected in the mounting box 4 in a sliding manner along the length direction of the sliding plate 51. The bottom surface of the mounting box 4 is provided with a first sliding groove 34 along the length direction of the sliding plate 51, and the mounting box 4 is connected with a second switch moving piece 45 in a sliding manner through the first sliding groove 34; the second switch stator 44 is electrically connected with the storage battery 25; when the second switch stator 44 is electrically connected to the second switch rotor 45, the electromagnet 53 is in a conducting state, and the electromagnet 53 can generate an adsorption effect on the magnetic attraction plate. A first spring 35 arranged along the length direction of the sliding plate 51 is fixed on the side wall of the second switch moving sheet 45, and the other end of the first spring 35 is fixedly connected with the mounting box 4; the first spring 35 provides elastic force for the second switch moving plate 45 to the side far away from the second switch fixed plate 44. A transmission sheet 43 is connected in the mounting box 4 in a sliding manner along the length direction of the mounting box; fixing pieces 55 are respectively fixed on two sides of the transmission piece 43, sliding grooves 36 are respectively formed in the opposite inner sides of the mounting box 4, and the fixing pieces 55 are connected with the mounting box 4 in a sliding mode through the sliding grooves 36; a second spring 12 is fixed on one side of the fixing plate 55 far away from the abutting box 5, and one end of the second spring 12 far away from the fixing plate 55 is fixedly connected with the mounting box 4 through a second sliding groove 36; the second spring 12 provides the fixing piece 55 with an elastic force toward the side close to the abutting box 5. A through hole 13 for penetrating the second switch moving piece 45 is formed in the side wall of the transmission piece 43, an insertion piece 14 is fixed on one side of the through hole 13 away from the sliding plate 51, and an insertion groove 15 for being inserted with the insertion piece 14 is formed on one side of the second switch moving piece 45 away from the abutting box 5; the driving strap 43 provides a limiting function for the second switch moving strap 45 through the plug-in strap 14, so that the second switch moving strap 45 is in an electric contact state with the second switch fixed strap 44.

Referring to fig. 2 and 6, a third sliding groove 16 is formed in the side wall of the second sliding groove 36 close to the motor 1, and the mounting box 4 is connected with a connecting sheet 17 in a sliding manner along the width direction of the sliding plate 51 through the third sliding groove 16; the connecting piece 17 and the opposite inner sides of the second switch moving piece 45 are respectively provided with a first inclined plane 57. The side wall of the second sliding groove 36 close to one side of the abutting box 5 is provided with a fourth sliding groove 46, and the mounting box 4 is connected with the abutting sheet 26 in a sliding manner along the length direction of the sliding plate 51 through the fourth sliding groove 46; the opposite inner sides of the abutting sheet 26 and the connecting sheet 17 are respectively provided with a second inclined surface 37.

Referring to fig. 6 and 7, a wedge block 6 is fixed on the side wall of the abutting box 5, and an end portion of the wedge block 6 on the side close to the motor 1 and an end portion of the abutting sheet 26 on the side far from the motor 1 are respectively provided with a third inclined surface 61. The end of the abutting piece 26 close to the motor 1 is provided with a slope surface four 62 for abutting with the side of the wedge block 6 far from the motor 1.

The implementation principle of the brushless motor 1 with built-in drive in the embodiment of the present application is as follows:

when the motor 1 vibrates during operation, the motor 1 will continuously impact the pressing column 42, and the pressing plate 63 first contacts the sliding plate 51 during the movement of the pressing column 42. Since the abutting plate 63 is blocked by the sliding plate 51, the abutting plate 63 contracts, and the abutting columns 42 contact with the abutting box 5, and the abutting columns 42 push the abutting box 5 to move. When the contact box 5 moves, the guide piece 31 is separated from the slide groove 52, so that the slide plate 51 loses the limit function, and the slide plate 51 moves toward the electromagnet 53.

After the thrust of the abutting column 42, which is received by the motor 1, is offset by the elastic member, the abutting column 42 resets to the side close to the motor 1, and receives the thrust applied when the motor 1 vibrates again, the abutting column 42 drives the abutting plate 63 to the side close to the abutting box 5 again, at this time, because the first sliding plate 51 is adsorbed by the electromagnet 53, the abutting plate 63 passes through between the first sliding plate 51 and the side wall of the abutting box 5, and abuts against the second sliding plate 51.

The above process is repeated until all the slide plates 51 are attracted by the electromagnets 53. After the sliding plate 51 is adsorbed by the electromagnet 53 to move, the first switch moving piece 56 is contacted with the first switch fixed piece; after all the sliding plates 51 are attracted by the electromagnet 53, the storage battery 25 is conducted with the air suction pump 24, the air suction pump 24 conveys air into the air bag to expand the air bag, and the air bag provides a damping effect for the motor 1.

When the sliding plate 51 is attracted by the electromagnet 53, the abutting plate 63 is not obstructed in the moving process, and the abutting box 5 is pushed by the abutting column 42 to move to the maximum stroke of the abutting box 5. The abutting box 5 is in contact with the transmission sheet 43 and pushes the transmission sheet 43 to move, the insertion sheet 14 is separated from the insertion groove 15 when the transmission sheet 43 moves, so that the limiting effect on the second switch moving sheet 45 is relieved, the second switch moving sheet 45 is separated from the second switch fixed sheet 44, the electromagnet 53 loses magnetic force, and the sliding plate 51 is still in an abutting state with the electromagnet 53 because the abutting plate 63 is located between the sliding plate 51 and the inner wall of the abutting box 5 at the moment. When the pressing column 42 is reset by the elastic force of the elastic member, the pressing plate 63 is drawn out from the pressing box 5, and the slide plate 51 is separated from the electromagnet 53 by the elastic force. After the sliding plate 51 moves, the suction pump 24 is disconnected from the battery 25; the air pump 24 stops blowing air to the air bag.

After the abutting box is reset upwards, the wedge-shaped block 6 is contacted with the abutting sheet 26 and pushes the abutting sheet 26 to contract inwards; the abutting sheet 26 contacts with the connecting sheet 17 during the movement process and pushes the connecting sheet 17 to move; and the connecting sheet 17 pushes the second switch moving sheet 45 to reset to the side close to the first switch moving sheet 56 in the moving process, so that the electromagnet 53 is restored to the conducting state, and the electromagnet 53 continues to generate magnetic force adsorption on the sliding plate 51. Can set up the damping layer between butt joint case and the mounting panel to the time that the extension butt joint case resets, the damping layer can set up to rubber, and the damping layer can play insulating effect simultaneously.

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: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A brushless motor with built-in drive comprises a motor (1) and a base (2) arranged at the bottom of the motor (1) and used for fixing the motor (1), and is characterized in that: a cavity (21) is formed in the base (2), and a communicating hole (22) is formed in the inner circumferential surface of the base (2); an inflatable cushion (23) is fixed on the base (2) through a cavity (21); and an air suction pump (24) communicated with the inflatable cushion (23) is fixed on the peripheral surface of the base (2).

2. A brushless motor with built-in drive according to claim 1, wherein: a storage battery (25) is arranged at the top of the base (2); a power supply mechanism (3) for electrically connecting the air suction pump (24) and the storage battery (25) is arranged in the base (2); the power supply mechanism (3) comprises a mounting box (4) fixed on the inner circumferential surface of the base (2), and a butting box (5) and a butting column (42) are connected in the base (2) in a sliding manner along the length direction of the base; a plurality of sliding plates (51) are connected in the abutting box (5) in a sliding manner; a plurality of first switch fixed sheets are fixed on the inner wall of the abutting box (5) along the length direction of the abutting box, and a first switch moving sheet (56) used for being in electric contact with the first switch fixed sheets is fixed on the side wall of the sliding plate (51); the first switch stator is electrically connected with the air suction pump (24) and the storage battery (25) respectively; a limiting component used for limiting the sliding plate (51) is arranged between the mounting box (4) and the sliding plate (51); a moving component for driving the sliding plate (51) to move is arranged in the abutting box (5); and a conductive assembly for conducting the air suction pump (24) and the storage battery (25) is arranged between the abutting box (5) and the mounting box (4).

3. A brushless motor with built-in drive according to claim 2, wherein: the limiting assembly comprises a plurality of limiting pieces (11) fixed on the inner wall of the mounting box (4); the side wall of the sliding plate (51) is provided with a sliding groove (52), and the sliding plate (51) is in sliding fit with the limiting sheet (11) through the sliding groove (52); the bottom surface of the abutting column (42) is connected with an abutting plate (63) in a sliding manner along the length direction of the mounting box (4).

4. A brushless motor with built-in drive according to claim 3, wherein: the length of the limiting pieces (11) is gradually increased from the box opening of the mounting box (4) to the box bottom direction of the mounting box (4).

5. A brushless motor with built-in drive according to claim 3, wherein: the bottom surface of the abutting column (42) is provided with an installation groove (65), and the abutting plate (63) is connected with the abutting column (42) in a sliding manner along the length direction of the installation box (4) through the installation groove (65); and a compression spring (64) is fixed on one side of the abutting plate (63) far away from the sliding plate (51), and one end of the compression spring (64) far away from the abutting plate (63) is fixedly connected with the abutting column (42) through the mounting groove (65).

6. A brushless motor with built-in drive according to claim 2, wherein: the moving assembly comprises a plurality of electromagnets (53) fixed on the side wall of the abutting box (5), and a magnetic attraction sheet (54) for attracting the electromagnets (53) is fixed on one side of the sliding plate (51) close to the electromagnets (53).

7. A brushless motor with built-in drive according to claim 2, wherein: guide sheets (31) are respectively fixed on two sides of the sliding plate (51), guide grooves (32) are respectively formed in the opposite inner sides of the butting box (5), and the guide sheets (31) are in sliding fit with the butting box (5) through the guide grooves (32); one side, far away from switch stator, of guide plate (31) is fixed with reset spring (33), reset spring (33) are kept away from guide plate (31) one end pass through guide way (32) with butt box (5) fixed connection.

8. The brushless motor with built-in drive according to claim 6, wherein: the conductive assembly comprises a second switch stator (44) fixed on the inner wall of the mounting box (4), and the electromagnets (53) are respectively and electrically connected with the second switch stator (44); a second switch moving piece (45) which is used for being in electric contact with the second switch fixed piece (44) is connected in the mounting box (4) in a sliding mode along the length direction of the sliding plate (51); the second switch stator (44) is electrically connected with the storage battery (25); a driving sheet (43) is connected in the mounting box (4) in a sliding manner along the length direction of the mounting box; the side wall of the transmission piece (43) is provided with a through hole (13) used for penetrating through a second switch moving piece (45), one side, far away from the sliding plate (51), of the through hole (13) is fixed with an insertion piece (14), and one side, far away from the abutting box (5), of the second switch moving piece (45) is provided with an insertion groove (15) used for being inserted with the insertion piece (14).

9. A brushless motor with built-in drive according to claim 8, wherein: the mounting box (4) is connected with a connecting sheet (17) in a sliding manner along the width direction of the sliding plate (51); the opposite inner sides of the connecting piece (17) and the switch moving piece II (45) are respectively provided with a first inclined plane (57); the mounting box (4) is connected with a butting piece (26) in a sliding manner along the length direction of the sliding plate (51); the opposite inner sides of the abutting sheet (26) and the connecting sheet (17) are respectively provided with a second inclined surface (37); the butt joint box (5) lateral wall is fixed with wedge (6), wedge (6) are close to the tip of motor (1) one side and butt joint piece (26) are kept away from the tip of motor (1) one side is seted up inclined plane three (61) respectively.