CN209913683U

CN209913683U - Small high-speed DC brushless motor

Info

Publication number: CN209913683U
Application number: CN201921135607.5U
Authority: CN
Inventors: 秦东
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-01-07
Anticipated expiration: 2029-07-19

Abstract

The utility model relates to a small-sized high-speed DC brushless motor, which comprises a motor shell, fan blades, a rotor assembly, a stator assembly and a terminal circuit board, wherein the stator assembly is enclosed by a plurality of winding stators and is arranged in the motor shell in a penetrating way; the assembly is simple and convenient, the production mode can be simplified, and the production efficiency is greatly improved; the probability of producing defective products in the production process is reduced, the product percent of pass is improved, and the production cost is reduced.

Description

Small high-speed DC brushless motor

Technical Field

The utility model relates to the technical field of electric machines, indicate a small-size high-speed direct current brushless motor especially.

Background

Motors (Motors) are devices that convert electrical energy into mechanical energy using the principle of electromagnetic induction, and are widely used in various electrical devices required for industrial production and life. The existing motors can be divided into direct current motors and alternating current motors, wherein the brushless direct current motors are widely applied to the fields of household appliances, automobiles, industrial control, automation, aerospace and the like. The brushless direct current motor is a motor without a brush and a commutator, and is a typical electromechanical integration product. The existing brushless direct current motor has large loss, low efficiency and high production cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a reduce loss, raise the efficiency, reduce manufacturing cost's small-size high-speed direct current brushless motor.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a small-size high-speed DC brushless motor, includes motor housing, fan blade, rotor subassembly, stator module and terminal circuit board, stator module encloses by a plurality of wire winding stators to close the equipment and wear to establish in motor housing, the rotor subassembly is connected with stator module, the fan blade is connected with the rotor subassembly, the terminal circuit board is established in motor housing's bottom and with stator module electric connection.

Preferably, the rotor subassembly includes main shaft, magnetite rotor, spring and bearing, the magnetite rotor wears to establish respectively on the main shaft with two bearings, and two bearings pass through spring elastic connection.

Preferably, the motor housing comprises an inner cylinder and an outer cylinder, the inner cylinder and the outer cylinder are connected through flow deflectors, and the flow deflectors are distributed between the inner cylinder and the outer cylinder at intervals in an arc shape.

Preferably, the bottom of the winding stator is provided with a pin, and the winding stator is electrically connected with the terminal circuit board through the pin.

Preferably, the motor further comprises a connecting shell, the connecting shell is sleeved outside the motor shell, one end of the connecting shell is a connecting portion, the connecting portion is in a tooth shape, and salient points are distributed on the outer wall of the connecting shell.

Preferably, the winding stator is provided with four pieces, wherein two opposite sides of the two winding stators are respectively provided with a clamping block, the other two opposite sides of the two winding stators are respectively provided with a clamping groove, and the four winding stators are fixedly clamped through the clamping blocks and the clamping grooves.

The beneficial effects of the utility model reside in that:

1. the stator assembly is assembled into the motor shell by clamping a plurality of independent winding stators, so that the motor efficiency can be greatly improved, and the loss is reduced;

2. the assembly is simple and convenient, the production mode can be simplified, and the production efficiency is greatly improved;

3. the probability of producing defective products in the production process is reduced, the product percent of pass is improved, and the production cost is reduced;

4. the spring is added between the two bearings of the rotor assembly, so that the bearings have pre-pressure during assembly, the noise caused by the bearing clearance is reduced, and the silencing effect is improved.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an explosion structure diagram of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is a perspective view of the motor case.

Description of reference numerals: 1. a motor housing; 11. an outer cylinder; 12. an inner barrel; 13. a flow deflector; 2. a fan blade; 3. a rotor assembly; 31. a main shaft; 32. a magnet rotor; 33. a bearing; 34. a spring; 4. a wound stator; 5. a terminal wiring board; 6. connecting the shell; 61. a connecting portion; 62. and (4) bumps.

Detailed Description

Referring to fig. 1-4, the present invention relates to a small-sized high-speed dc brushless motor, which comprises a motor housing 1, a fan blade 2, a rotor assembly 3, a stator assembly and a terminal circuit board 5, wherein the motor housing 1 comprises an inner tube 12, an outer tube 11 and a baffle 13, the inner tube 12 is connected to the outer tube 11 through the baffle 13, the baffle 13 is distributed between the inner tube 12 and the outer tube 11 at an arc-shaped interval, the stator assembly is assembled by surrounding four wound stators 4 and is inserted into the motor housing 1, wherein two sides of two opposite wound stators 4 are respectively provided with a fixture block, two sides of the other two opposite wound stators 4 are provided with a clamping slot, the wound stators 4 are fixedly clamped by the fixture block and the clamping slot, the stator assembly is hollow, the rotor assembly 3 comprises a main shaft 31, a magnet rotor 32, a spring 34 and a bearing 33, the utility model discloses a motor housing, including main shaft 31, stator winding 4, terminal circuit board 5, interior casing, stator winding 4, main shaft 31, two bearings 33 are worn to establish respectively on main shaft 31, and two bearings 33 pass through spring 34 elastic connection, magnet rotor 32 wears to establish in stator module, the other end of main shaft 31 passes inner tube 12 and is connected with

fan blade

2, 2 ring sets up a plurality of blades on the fan blade, the blade is established to one side on fan blade 2, terminal circuit board 5 establishes the bottom at motor housing 1, stator winding 4's bottom is equipped with the pin, and stator winding 4 passes through pin.

Preferably, the motor further comprises a connecting shell 6, the connecting shell 6 is sleeved outside the motor shell 1, one end of the connecting shell 6 is a connecting portion 61, the connecting portion 61 is tooth-shaped, and salient points 62 are distributed on the outer wall of the connecting shell 6.

The utility model has simple and convenient assembly, reduces the generation probability of defective products, greatly improves the product percent of pass and reduces the production cost; the stator assembly is formed by matching and clamping four independent winding stators 4, so that the volume of the stator assembly can be reduced, the overall volume of the motor is reduced, the requirement on motor miniaturization is met, the production mode is simplified, the production efficiency is improved, the motor efficiency can be greatly improved, and the loss is reduced; a spring 34 is added between the two bearings 33, so that the bearings 33 have pre-pressure during assembly, the noise caused by the play of the bearings 33 is reduced, and the motor silencing effect is improved; by optimizing the radian of the guide vanes 13 and the blade structure of the fan blade 2, larger air volume and noise reduction can be obtained.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. The utility model provides a small-size high-speed DC brushless motor, includes motor housing, fan blade, rotor subassembly, stator module and terminal circuit board, its characterized in that: the motor comprises a motor shell, a stator assembly, a fan blade, a terminal circuit board and a motor blade, wherein the stator assembly is enclosed by a plurality of winding stators and is arranged in the motor shell in a penetrating mode, the rotor assembly is connected with the stator assembly, the fan blade is connected with the rotor assembly, and the terminal circuit board is arranged at the bottom end of the motor shell and is electrically connected with the stator assembly.

2. The small high-speed dc brushless motor according to claim 1, wherein: the rotor subassembly includes main shaft, magnetite rotor, spring and bearing, the magnetite rotor wears to establish respectively on the main shaft with two bearings, and two bearings pass through spring elastic connection.

3. The small high-speed dc brushless motor according to claim 1, wherein: the winding stator is provided with four pieces, wherein two opposite sides of the two winding stators are respectively provided with a clamping block, the other two opposite sides of the two winding stators are respectively provided with a clamping groove, and the four winding stators are fixedly clamped through the clamping blocks and the clamping grooves.

4. The small high-speed dc brushless motor according to claim 1, wherein: the motor shell comprises an inner cylinder and an outer cylinder, the inner cylinder is connected with the outer cylinder through flow deflectors, and the flow deflectors are distributed between the inner cylinder and the outer cylinder at intervals in an arc shape.

5. The small high-speed dc brushless motor according to claim 1, wherein: and pins are arranged at the bottoms of the winding stators, and the winding stators are electrically connected with the terminal circuit board through the pins.

6. The small high-speed dc brushless motor according to claim 1, wherein: the motor is characterized by further comprising a connecting shell, the connecting shell is sleeved outside the motor shell, one end of the connecting shell is a connecting portion, the connecting portion is tooth-shaped, and salient points are distributed on the outer wall of the connecting shell.