Rotor structure of brushless motor

Abstract

The utility model relates to the technical field of brushless motors, in particular to a brushless motor rotor structure, which enables magnetomotive force to be concentrated and an equivalent area to be increased through the cooperation of a magnetic shoe I and a magnetic shoe II, thereby improving the power density of the brushless motor rotor structure. Comprising a stator core; the motor also comprises a rotor which is located in the stator core. The rotor comprises a rotor iron core, a plurality of groups of magnetic shoes I and a plurality of groups of magnetic shoes II; and the plurality of groups of magnetic shoes I and the plurality of groups of magnetic shoes II are arranged on the rotor iron core.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brushless motor, in particular to a brushless motor rotor structure. BACKGROUND

[0002] Brushless motor is a kind of motor without using mechanical brush and commutator, and it realizes commutation through electronic controller, and the rotor structure of brushless motor is disclosed in the utility model patent with announcement number CN218976442U and the rotor structure of brushless motor disclosed in the use motor with announcement number CN208479305U.

[0003] The rotor structure of existing brushless motor is relatively simple, and the power density is low, and it is easy to leak magnetic, so as to cause poor practicality, so it is urgent to improve the rotor structure of existing brushless motor. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a kind of brushless motor rotor structure for the magnetic dynamic potential concentration by magnetic shoe one and magnetic shoe two cooperation, equivalent area increases, to improve the power density of brushless motor rotor structure.

[0005] The utility model discloses a kind of brushless motor rotor structure, including stator core;Still include rotor, rotor is located in stator core;

[0006] The rotor includes rotor core, multiple sets of magnetic shoe one and multiple sets of magnetic shoe two, multiple sets of magnetic shoe one and multiple sets of magnetic shoe two are installed on rotor core;

[0007] The magnetic dynamic potential concentration by magnetic shoe one and magnetic shoe two cooperation, equivalent area increases, to improve the power density of brushless motor rotor structure.

[0008] Preferably, each set of magnetic shoe two is matched with two sets of magnetic shoe one, to form V-shaped magnetic circuit;Make a set of magnetic shoe two and two sets of magnetic shoe one middle part magnetic dynamic potential concentration, equivalent area increases, to improve the practicality of brushless motor rotor structure.

[0009] Preferably, multiple sets of magnetic shoe one are same in size, and multiple sets of magnetic shoe two are same in size;To improve the stability of brushless motor rotor structure.

[0010] Preferably, multiple sets of magnetic shoe two are same in size, and multiple sets of magnetic shoe two are same in size;To improve the stability of brushless motor rotor structure.

[0011] Preferably, the middle part of rotor core is provided with plum-blossom perforation;Convenient for rotor core and shaft parts connection, to improve the practicality of brushless motor rotor structure.

[0012] Compared with the prior art, the brushless motor rotor structure has the advantages that: the magnetic motive force is concentrated through the cooperation of the magnetic tile one and the magnetic tile two, the equivalent area is increased, and thus the power density of the brushless motor rotor structure is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the axial measurement structure schematic diagram of the utility model;

[0014] Figure 2 is the front view structure schematic diagram of the utility model;

[0015] Figure 3 is the axial measurement structure schematic diagram of the rotor of the utility model;

[0016] Figure 4 is the axial measurement structure schematic diagram of the stator core of the utility model;

[0017] Figure 5 is the axial measurement structure schematic diagram of the v-shaped magnetic circuit of the utility model;

[0018] Figure 6 is the structure schematic diagram of the magnetic pole direction of the magnetic tile one and the magnetic tile two of the utility model.

[0019] Markings in the drawings: 1, stator core; 2, rotor core; 3, magnetic tile one; 4, magnetic tile two; 5, magnetic separation groove. DETAILED DESCRIPTION

[0020] In order to facilitate understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] EMBODIMENT

[0022] As Figures 1 to 6 shown, a brushless motor rotor structure, comprising a stator core 1; further comprising a rotor, the rotor is located in the stator core 1;

[0023] The rotor includes a rotor core 2, a plurality of magnetic tile one 3 and a plurality of magnetic tile two 4, and the plurality of magnetic tile one 3 and the plurality of magnetic tile two 4 are installed on the rotor core 2;

[0024] Each group of magnetic tile two 4 is matched with two groups of magnetic tile one 3 to form a V-shaped magnetic circuit;

[0025] The plurality of magnetic tile one 3 is the same size, and the plurality of magnetic tile two 4 is the same size;

[0026] A plurality of magnetic separation grooves 5 are arranged on the rotor core 2, and the plurality of magnetic separation grooves 5 are located between the plurality of V-shaped magnetic circuits respectively;

[0027] The rotor core 2 is provided with plum blossom perforation in the middle part;

[0028] The V-shaped magnetic circuit is formed by the two groups of magnetic tiles 4 and the two groups of magnetic tiles 3, the magnetic motive force is concentrated in the middle part of the V-shaped magnetic circuit, the equivalent area is increased, the V-shaped magnetic circuit is uniformly distributed on the rotor core 2, and the magnetic motive force of the brushless motor rotor structure is increased, and then the power density of the brushless motor is improved.

[0029] The outer diameter of the stator core 1 is 69mm; the inner diameter of the stator core 1 is 34mm, the outer diameter of the rotor core 2 is 30.8mm; the inner diameter of the magnetic tile 3 is R6, and the outer diameter is R7.6; the inner diameter of the magnetic tile 4 is R10.2, and the outer diameter is R12.

[0030] The stator core 1 of the brushless motor rotor structure of the utility model is purchased on the market, and the technical personnel in the industry only needs to install and operate according to the attached instruction manual, without the technical personnel in the field paying creative labor.

[0031] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary technical personnel in the technical field, without departing from the technical principle of the utility model, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection range of the utility model.

Claims

1. A brushless motor rotor structure comprising a stator core (1); characterized in that, Also include a rotor, the rotor is located in the stator core (1); The rotor includes rotor core (2), a plurality of sets of magnetic tile one (3) and a plurality of sets of magnetic tile two (4), a plurality of sets of magnetic tile one (3) and a plurality of sets of magnetic tile two (4) are installed on the rotor core (2).

2. A brushless motor rotor structure as claimed in claim 1, wherein, Each set of magnetic tile two (4) is matched with two sets of magnetic tile one (3) respectively, and a V-shaped magnetic circuit is formed.

3. A brushless motor rotor structure as claimed in claim 2, wherein, The plurality of sets of magnetic tile one (3) is the same size, and the plurality of sets of magnetic tile two (4) is the same size.

4. A brushless motor rotor structure as claimed in claim 2, wherein, A plurality of sets of magnetic slot (5) are arranged on the rotor core (2), and the plurality of sets of magnetic slot (5) are located between the plurality of sets of V-shaped magnetic circuits respectively.

5. A brushless motor rotor structure as claimed in claim 1, wherein, The middle of the rotor core (2) is provided with a plum blossom perforation.

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