Lightweight brushless motor

Abstract

The utility model discloses a lightweight brushless motor, which belongs to the technical field of brushless motors and comprises a brushless motor body, the brushless motor body comprises a casing, a stator assembly, a rotor assembly, a front end sealing element, a rear end sealing element and a motor controller, the stator assembly is arranged on the inner side of the casing, the rotor assembly is arranged on the inner side of the stator assembly, and the front end sealing element is arranged on the inner side of the rotor assembly. The front-end sealing element is arranged on one side of the machine shell, the rear-end sealing element is arranged on the other side of the machine shell, the motor controller is arranged on one side of the rear-end sealing element, and the motor solves the problems that a traditional motor is small in torsion, large in size, complex in structure and too heavy in size.

Description

TECHNICAL FIELD

[0001] The utility model relates to a brushless motor technical field especially relates to a light brushless motor. BACKGROUND

[0002] The brushless DC motor is composed of a motor main body and a driver, and is a typical mechatronic product. Since the brushless DC motor operates in a self-control mode, it does not need to add a starting winding to the rotor like a synchronous motor under heavy load starting of frequency conversion speed regulation, and it also does not produce oscillation and step-out when the load suddenly changes. The permanent magnet of the small and medium capacity brushless DC motor is now mostly made of high magnetic energy level rare earth neodymium iron boron (Nd-Fe-B) material, so the volume of the rare earth permanent magnet brushless motor is reduced by one frame size compared with the same capacity three-phase asynchronous motor.

[0003] In the prior art, the brushless motor is provided with a large number of copper wires wound inside, and the internal arrangement is complex, and the rotor or stator is mostly integrally arranged, so when the internal damage occurs, it is not convenient to disassemble and replace the internal part. Therefore, we propose a light brushless motor. UTILITY MODEL CONTENTS

[0004] The utility model discloses in order to solve the shortcoming that exists in prior art, and proposes a light brushless motor, and the light brushless motor solves the problems of small torque, large volume, complex self structure and excessive volume of traditional motor.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A light brushless motor, comprising a brushless motor body, the brushless motor body comprising a casing, a stator assembly, a rotor assembly, a front end seal, a rear end seal and a motor controller, the stator assembly is arranged on the inner side of the casing, the rotor assembly is arranged on the inner side of the stator assembly, the front end seal is arranged on one side of the casing, the rear end seal is arranged on the other side of the casing, and the motor controller is arranged on one side of the rear end seal.

[0007] Preferably, the stator assembly comprises a front wire holder, the front wire holder is arranged in the casing, a stator core is arranged on one side of the front wire holder, a slot insulating sheet is arranged in the stator core, a rear wire holder is arranged on one side of the stator core, an enameled wire winding is arranged on one side of the rear wire holder, a terminal is arranged on one side of the enameled wire winding, and a lead wire is arranged on one side of the terminal.

[0008] Preferably, the rotor assembly comprises a front bearing, the front bearing is arranged on one side of the front wire holder, a rotating shaft is inserted into one side of the front bearing, a rotor core is arranged on the outer side of the rotating shaft, a magnetic steel is inserted into the rotor core, and a rear bearing is arranged on one side of the rotor core.

[0009] Preferably, the rear end seal includes a rear end cover, which is arranged on one side of the casing, a sealing ring is arranged between the rear end cover and the casing, a plurality of waterproof joints are arranged on the outside of the rear end cover, and a screw plug is arranged on one side of the rear end cover.

[0010] Preferably, the front end seal comprises a front end cover, which is arranged on a side of the casing away from the rear end cover, a second sealing ring is arranged between the front end cover and the casing, and a skeleton oil seal is arranged on one side of the front end cover.

[0011] Preferably, a bolt is inserted between the casing, the rear end cover and the front end cover, and one end of the bolt is threadedly connected to a nut.

[0012] In summary, the present invention provides a function of easy disassembly and assembly between the casing, the rear end cover and the front end cover through the arrangement of bolts and nuts, and the stator assembly and the rotor assembly are neatly and simply independently arranged, which is conducive to their disassembly, replacement and maintenance, thereby providing a function of easy assembly of the brushless motor body.

[0013] The utility model provides a small size, high torque output and light weight by coordinating the casing, stator assembly, rotor assembly, front seal, rear seal and motor controller, while the motor casing, front and rear end covers and electric control box are made of aluminum alloy to reduce weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front axial structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the explosive structure of the utility model;

[0016] Figure 3 This is a schematic structural diagram of the stator assembly of the utility model;

[0017] Figure 4 This is a schematic structural diagram of the rotor assembly of the present utility model.

[0018] In the figure: 4, brushless motor body; 41, housing; 42, stator assembly; 421, front bobbin; 422, stator core; 423, slot insulation sheet; 424, rear bobbin; 425, enameled wire winding; 426, terminal; 427, lead wire; 43, rotor assembly; 431, front bearing; 432, rotating shaft; 433, rotor core; 434, magnet; 435, rear bearing; 44, rear end cover; 45, sealing ring 1; 46, waterproof joint; 47, screw plug; 48, front end cover; 49, sealing ring 2; 410, skeleton oil seal; 411, bolt; 412, nut. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figures 1-4 As shown, a lightweight brushless motor includes a brushless motor body 4, which includes a housing 41. A stator assembly 42 is arranged inside the housing 41. The stator assembly 42 includes a front bobbin 421, which is arranged inside the housing 41. A stator core 422 is provided on one side of the front bobbin 421. A slot insulating sheet 423 is provided inside the stator core 422. A rear bobbin 424 is provided on one side of the stator core 422. An enameled wire winding 425 is provided on one side of the rear bobbin 424. A terminal 426 is provided on one side of the enameled wire winding 425. A lead wire 427 is provided on one side of the terminal 426.

[0021] The rotor assembly 43 is arranged on the inner side of the stator assembly 42. The rotor assembly 43 includes a front bearing 431. The front bearing 431 is arranged on one side of the front bobbin 421. A rotating shaft 432 is inserted into one side of the front bearing 431. A rotor core 433 is arranged on the outer side of the rotating shaft 432. A magnet 434 is inserted into the rotor core 433. A rear bearing 435 is arranged on one side of the rotor core 433.

[0022] The front end seal is provided on one side of the housing 41. The front end seal includes a front end cover 48. The front end cover 48 is provided on the side of the housing 41 away from the rear end cover 44. A sealing ring 49 is provided between the front end cover 48 and the housing 41. A skeleton oil seal 410 is provided on one side of the front end cover 48.

[0023] The rear end seal is provided on the other side of the housing 41. The rear end seal includes a rear end cover 44. The rear end cover 44 is provided on one side of the housing 41. A sealing ring 45 is provided between the rear end cover 44 and the housing 41. Several waterproof joints 46 are provided on the outside of the rear end cover 44. A screw plug 47 is provided on one side of the rear end cover 44. A bolt 411 is inserted between the housing 41, the rear end cover 44 and the front end cover 48. One end of the bolt 411 is threadedly connected to a nut 412.

[0024] The motor controller is detachably connected to one side of the rear end seal by bolts. The motor controller includes an electric control box, a circuit board is arranged in the electric control box, and an electric control cover is arranged on one side of the electric control box.

[0025] In this embodiment, the motor controller supplies power to the stator assembly 42 , and the stator assembly 42 is energized to form a magnetic field with the rotor assembly 43 , causing the rotor assembly 43 to rotate to drive the shaft end.

[0026] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A lightweight brushless motor, characterized in that: It comprises a brushless motor body (4), wherein the brushless motor body (4) comprises a housing (41), A stator assembly (42), the stator assembly (42) being arranged on the inner side of the housing (41), the stator assembly (42) comprising a front bobbin (421), the front bobbin (421) being arranged in the housing (41), a stator core (422) being arranged on one side of the front bobbin (421), a slot insulating sheet (423) being arranged in the stator core (422), a rear bobbin (424) being arranged on one side of the stator core (422), an enameled wire winding (425) being arranged on one side of the rear bobbin (424), a connection terminal (426) being arranged on one side of the enameled wire winding (425), a lead wire (427) being arranged on one side of the connection terminal (426); A rotor assembly (43), the rotor assembly (43) being arranged on the inner side of the stator assembly (42), the rotor assembly (43) comprising a front bearing (431), the front bearing (431) being arranged on one side of the front bobbin (421), a rotating shaft (432) being inserted into one side of the front bearing (431), a rotor core (433) being arranged on the outer side of the rotating shaft (432), a magnetic steel (434) being inserted into the rotor core (433), and a rear bearing (435) being arranged on one side of the rotor core (433); A front end seal, the front end seal being arranged on one side of the housing (41), the front end seal comprising a front end cover (48), the front end cover (48) being arranged on a side of the housing (41) away from the rear end cover (44), a second sealing ring (49) being arranged between the front end cover (48) and the housing (41), and a skeleton oil seal (410) being arranged on one side of the front end cover (48); A rear end seal, the rear end seal being arranged on the other side of the housing (41), the rear end seal comprising a rear end cover (44), the rear end cover (44) being arranged on one side of the housing (41), a sealing ring (45) being arranged between the rear end cover (44) and the housing (41), a plurality of waterproof joints (46) being arranged on the outside of the rear end cover (44), and a screw plug (47) being arranged on one side of the rear end cover (44); A bolt (411) is inserted between the housing (41), the rear end cover (44) and the front end cover (48), and one end of the bolt (411) is threadedly connected to a nut (412); The motor controller is arranged on one side of the rear end sealing component.

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