Brushless motor stator assembly and brushless motor

Abstract

The brushless motor stator assembly comprises a stator, the left side and the right side of the stator are fixedly connected with bearings, the bearing on the right side is sleeved with an end cover, the inner side of the end cover is in interference fit with the bearings, and the bearing on the left side is sleeved with a rotor rotationally connected with the bearing. A rotating shaft is installed between inner rings of the two bearings, the right end of the rotating shaft penetrates through and extends to the right side of the stator, the left end of the rotating shaft is square, a square groove is formed in the inner side of the rotor, clamping grooves distributed annularly are formed in the left end of the rotating shaft, and a cavity is formed in the left side of the rotor; through holes corresponding to the clamping grooves are formed in the inner wall of the cavity. According to the utility model, the rotor and the stator can be disassembled very conveniently and quickly, so that the stator assembly can be maintained conveniently, a professional tool is not needed in the disassembly process, and the convenience of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to brushless motor technical field, concretely relates to brushless motor stator assembly and brushless motor. BACKGROUND

[0002] Brushless motor is a kind of direct current motor using electronic commutation instead of mechanical commutation, mainly by permanent magnet rotor, multiphase winding stator and position detection system.

[0003] Brushless motor stator assembly includes stator core and stator winding, and the core and winding constitute stator, when stator is connected with rotor, it is usually fixed by rotating shaft, rotating shaft passes through one end and is connected with end cover, the other end is fixed with rotor, and rotating shaft is usually fixed with rotor by screw, this fixing mode, maintenance personnel must be equipped with professional dismounting tool to dismount rotor and stator, and a large amount of working hours are consumed to complete stator-rotor separation operation, to cause equipment overhaul efficiency to reduce greatly. UTILITY MODEL CONTENTS

[0004] In view of the problems in the prior art, the utility model aims at providing a kind of brushless motor stator assembly and brushless motor, compared with prior art fixed mode, can effectively improve replacement speed, realize efficient maintenance.

[0005] To solve the problems in the background art, the utility model adopts the following technical scheme:

[0006] Brushless motor stator assembly, including stator, the left and right sides of the stator are fixedly connected with bearing, the bearing on the right side is sleeved with end cover, and the inner side of the end cover is interference fit with the bearing, the bearing on the left side is sleeved with the rotator rotationally connected therewith, the rotating shaft is installed between the inner ring of the two bearings, the right end of the rotating shaft penetrates and extends to the right side of the stator, the left end of the rotating shaft is square, the inner side of the rotator is provided with square groove, the left end of the rotating shaft is provided with annularly distributed clamping groove, the left side of the rotator is provided with cavity, the inner wall of the cavity is provided with through hole corresponding with clamping groove, the inner wall of the through hole is slidably connected with clamping block, one end of the clamping block is in contact with the inner part of clamping groove, the other end of the clamping block is fixedly connected with trapezoidal block, one side of the trapezoidal block and the inner wall of the cavity are fixedly connected with spring, the inner wall of the cavity is provided with annular groove, the inner wall of the annular groove is screw-connected with driving cover, and the inner side of the driving cover is in contact with trapezoidal block.

[0007] Further description of the above technical scheme:

[0008] The stator includes a circular core, opposite sides of the two bearings are fixedly connected with the circular core, a square core in annular distribution is integrally formed on the outer side of the circular core, a socket is formed on one side of the square core, an anti-dropping core is slidably connected to the inner wall of the socket, a lead screw in rotational connection with the anti-dropping core is inserted into the anti-dropping core, one end of the lead screw is inserted into the square core and is in threaded connection with the square core, a winding is sleeved on the square core, and the winding is connected with a power line.

[0009] As a further description of the above technical solution:

[0010] The driving cover is inserted with a screw in sliding connection therewith, and the right end of the screw is inserted into the rotor and is in threaded connection with the rotor.

[0011] As a further description of the above technical solution:

[0012] The rotor is provided with annularly distributed heat dissipation holes one, and the heat dissipation holes one are circular in shape.

[0013] As a further description of the above technical solution:

[0014] The end cover is provided with annularly distributed heat dissipation holes two, and the heat dissipation holes two are annular in shape.

[0015] The utility model also provides a brushless motor which contains the above brushless motor stator assembly.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The present scheme can conveniently and quickly disassemble the rotor and the stator, thereby facilitating maintenance of the stator assembly, and without the need of professional tools in the disassembly process, improving the convenience of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the utility model;

[0019] Figure 2 It is a perspective view of the utility model;

[0020] Figure 3 It is a sectional view of the utility model;

[0021] Figure 4 It is a sectional view of the utility model Figure 3 It is an enlarged view of A part of the utility model;

[0022] Figure 5 It is a side view of the stator of the utility model;

[0023] Figure 6 It is a perspective view of the driving cover of the utility model.

[0024] Explanation of reference numerals in the drawings:

[0025] 1, stator; 101, round core; 102, square core; 103, socket; 104, anti-escape core; 105, screw rod; 106, winding; 2, bearing; 3, end cover; 4, rotor; 5, rotating shaft; 6, square groove; 7, clamping groove; 8, cavity; 9, through hole; 10, clamping block; 11, trapezoidal block; 12, spring; 13, ring groove; 14, driving cover; 15, screw rod; 16, heat dissipation hole one; 17, heat dissipation hole two. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model;

[0027] Please refer to Figures 1-6 In the utility model: the brushless motor stator assembly, including the stator 1, the left and right sides of the stator 1 are fixedly connected with bearing 2, the right side bearing 2 is sleeved with end cover 3, the inner side of end cover 3 is in interference fit with bearing 2, the left side bearing 2 is sleeved with the rotator 4 rotationally connected therewith, the inner circle between the two bearings 2 is installed with rotating shaft 5, the right end of rotating shaft 5 penetrates and extends to the right side of stator 1, the left end of rotating shaft 5 is square, the inner side of rotator 4 is provided with square groove 6, the left end of rotating shaft 5 is provided with annularly distributed clamping groove 7, the left side of rotator 4 is provided with cavity 8, the inner wall of cavity 8 is provided with through hole 9 corresponding with clamping groove 7, the inner wall of through hole 9 is slidably connected with clamping block 10, one end of clamping block 10 is in contact with the inside of clamping groove 7, the other end of clamping block 10 is fixedly connected with trapezoidal block 11, one side between trapezoidal block 11 and the inner wall of cavity 8 is fixedly connected with spring 12, the inner wall of cavity 8 is provided with ring groove 13, the inner wall of ring groove 13 is threadedly connected with driving cover 14, the inner side of driving cover 14 is in contact with trapezoidal block 11.

[0028] In the utility model, clamping block 10 is inserted into clamping groove 7, and then the connection of rotating shaft 5 and rotator 4 is realized, and then the connection of rotator 4 and stator 1 is realized, when it is needed to maintain stator 1, user rotates driving cover 14, the inner side of driving cover 14 is threadedly connected with the inner wall of ring groove 13, so driving cover 14 will be away from cavity 8, in the process of moving, the inner side of driving cover 14 will slide along trapezoidal block 11, when driving cover 14 moves to the inclined surface of trapezoidal block 11, because spring 12 is in compression state, trapezoidal block 11 cannot be limited by driving cover 14, so trapezoidal block 11 will be deviated, then clamping block 10 slides along the inner wall of through hole 9, until clamping block 10 slides out of clamping groove 7, and then the unlocking of rotating shaft 5 and rotator 4 is realized, then rotator 4 can be taken off from stator 1, and then stator 1 can be maintained, the process is very convenient and fast, and it can be realized without the aid of tools.

[0029] Please refer to Figure 5 Wherein: the stator 1 includes a circular core 101, the opposite side of the two bearings 2 is fixedly connected with the circular core 101, the outer side of the circular core 101 is integrally formed with annularly distributed square cores 102, the side of the square core 102 is provided with a socket 103, the inner wall of the socket 103 is slidably connected with an anti-dropping core 104, the anti-dropping core 104 is penetrated by a screw rod 105 rotatably connected therewith, one end of the screw rod 105 is penetrated into the square core 102 and is threadedly connected therewith, the square core 102 is sleeved with a winding 106, and the winding 106 is connected with a power line.

[0030] In the utility model, the circular core 101, the square core 102 and the anti-dropping core 104 can constitute a complete stator core, if the winding 106 is damaged, the user can complete the unlocking of the anti-dropping core 104 by rotating the screw rod 105, then the winding 106 can be removed, the process is very convenient and fast, compared with the shearing mode for replacing the winding 106, the replacement speed can be effectively improved, and the iron core can be prevented from being damaged during the cutting of the winding 106, and therefore the practicality of the device is improved.

[0031] Please refer to Figure 4 Wherein: the driving cover 14 is penetrated by a screw rod 15 slidably connected therewith, and the right end of the screw rod 15 is penetrated into the rotor 4 and is threadedly connected therewith.

[0032] In the utility model, the driving cover 14 can be locked through the screw rod 15, and therefore the stability of the driving cover 14 is improved, and the connection stability of the rotor 4 and the stator 1 is improved.

[0033] Please refer to Figure 1 And 3 Wherein: the rotor 4 is provided with annularly distributed heat dissipation holes one 16, and the heat dissipation holes one 16 are circular in shape.

[0034] In the utility model, the heat dissipation holes one 16 can dissipate heat for the brushless motor, and therefore the practicality of the device is improved.

[0035] Please refer to Figure 2 And 3 Wherein: the end cover 3 is provided with annularly distributed heat dissipation holes two 17, and the heat dissipation holes two 17 are annular in shape.

[0036] In the utility model, the heat dissipation holes two 17 can dissipate heat for the brushless motor, and therefore the practicality of the device is improved.

[0037] The utility model also provides a brushless motor which comprises the brushless motor stator assembly.

[0038] The above merely is a preferred specific implementation manner of the present application; however, the protection scope of the present application is not limited thereto. Any person skilled in the art, within the technical range disclosed by the present application, according to the technical scheme and improvement concept of the present application, makes equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A brushless motor stator assembly comprising a stator (1), characterised in that: The left and right sides of the stator (1) are fixedly connected with bearings (2), the right side of the bearing (2) is sleeved with an end cover (3), the inner side of the end cover (3) is interference fit with the bearing (2), the left side of the bearing (2) is sleeved with a rotor (4) rotatably connected therewith, the inner circle of the two bearings (2) is mounted with a rotating shaft (5), the right end of the rotating shaft (5) penetrates and extends to the right side of the stator (1), the left end of the rotating shaft (5) is square, the inner side of the rotor (4) is provided with a square groove (6), the left end of the rotating shaft (5) is provided with a ring-shaped distribution of the clamping groove (7), the left side of the rotor (4) is provided with a cavity (8), the inner wall of the cavity (8) is provided with a through hole (9) corresponding to the clamping groove (7), the inner wall of the through hole (9) is slidably connected with a clamping block (10), one end of the clamping block (10) is in contact with the inside of the clamping groove (7), the other end of the clamping block (10) is fixedly connected with a trapezoidal block (11), one side of the trapezoidal block (11) and the inner wall of the cavity (8) are fixedly connected with a spring (12), the inner wall of the cavity (8) is provided with a ring groove (13), the inner wall of the ring groove (13) is threadedly connected with a driving cover (14), the inner side of the driving cover (14) is in contact with the trapezoidal block (11).

2. The brushless motor stator assembly of claim 1, wherein: The stator (1) comprises a circular core (101), the opposite sides of the two bearings (2) are fixedly connected with the circular core (101), the outer side of the circular core (101) is integrally formed with a ring-shaped distribution of the square core (102), one side of the square core (102) is provided with a socket (103), the inner wall of the socket (103) is slidably connected with an anti-drop core (104), the anti-drop core (104) is penetrated with a screw rod (105) rotatably connected therewith, one end of the screw rod (105) penetrates the square core (102) and is threadedly connected therewith, the square core (102) is sleeved with a winding (106), the winding (106) is connected with a power line.

3. The brushless motor stator assembly of claim 1, wherein: The driving cover (14) is penetrated with a screw rod (15) slidably connected therewith, the right end of the screw rod (15) penetrates the rotor (4) and is threadedly connected therewith.

4. The brushless motor stator assembly of claim 1, wherein: The rotor (4) is provided with a ring-shaped distribution of the heat dissipation hole (16), the shape of the heat dissipation hole (16) is circular.

5. The brushless motor stator assembly of claim 1, wherein: The end cover (3) is provided with a ring-shaped distribution of the heat dissipation hole (17), the shape of the heat dissipation hole (17) is annular.

6. A brushless electric motor characterized by: A brushless motor stator assembly as claimed in any one of claims 1-5 is included.

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