Outer rotor brushless motor applied to elevator door switch

Abstract

The utility model discloses an external rotor brushless motor applied to an elevator door switch, which comprises a rotor assembly and a stator assembly, the rotor assembly is sleeved at the upper end of the outer side of the stator assembly, the rotor assembly is provided with a rotating shaft, the upper end of one end of the rotating shaft is provided with a rotor casing, and the rotor casing is arranged on the rotating shaft through a shaft sleeve and a rotor bearing. The upper end of the inner wall of the rotor casing is provided with a plurality of magnetic steel sheets which are annularly arranged, the magnetic steel sheets are fixedly arranged at the upper end of the inner wall of the rotor casing through correspondingly matched magnetic steel limiting frames, the stator assembly is provided with a stator support, and the stator support is arranged at the upper end of the rotating shaft through a support bearing. The upper end of the stator support is provided with a PCB and a stator iron core correspondingly matched with the magnetic steel sheets, and the stator iron core is arranged on the inner sides of the magnetic steel sheets. The motor has the advantages of novel design, simple structure, small size, long service life, low noise, high motor efficiency, large torque and high stability.

Description

Technical Field

[0001] The utility model relates to the technical field of brushless motors, in particular to an outer-rotor brushless motor applied to elevator door switches. Background Art

[0002] With the continuous improvement of living standards, more and more commercial buildings or private residences have adopted automatic vertical elevators, which have become indispensable equipment, serving customers and consumers more conveniently and efficiently.

[0003] In past and existing elevators, most of the motors used are induction motors, DC brushed motors, etc. Induction motors and DC brushed motors have the following deficiencies and disadvantages: 1) The motor has a large volume, high power consumption and low efficiency; 2) It has a short lifespan, high noise, high maintenance frequency and high failure rate; 3) The motor control operation is inconvenient and the accuracy is not high. Therefore, an outer-rotor brushless motor applied to elevator door switches is designed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an outer-rotor brushless motor applied to elevator door switches in view of the deficiencies of the prior art. The outer-rotor brushless motor applied to elevator door switches is novel in design, simple in structure, small in volume, long in lifespan, low in noise, high in motor efficiency, large in torque and high in stability.

[0005] To achieve the above purpose, the utility model is realized through the following technical solutions.

[0006] An outer-rotor brushless motor applied to elevator door switches, comprising a rotor assembly and a stator assembly. The rotor assembly is sleeved on the upper outer side of the stator assembly. The rotor assembly is provided with a rotating shaft, and a rotor housing is installed at the upper end of one end of the rotating shaft. The rotor housing is installed on the rotating shaft through a shaft sleeve and a rotor bearing. A plurality of magnet steel sheets arranged in a ring are installed on the upper inner wall of the rotor housing, and the magnet steel sheets are fixedly installed on the upper inner wall of the rotor housing through corresponding magnet steel limit frames. The stator assembly is provided with a stator bracket, and the stator bracket is installed on the upper end of the rotating shaft through a bracket bearing. A PCB board and a stator iron core corresponding to and matching the magnet steel sheets are installed on the upper end of the stator bracket, and the stator iron core is arranged inside the magnet steel sheets.

[0007] Wherein, the shaft sleeve is fixedly installed on the rotor housing by riveting, and the shaft sleeve is provided with a plurality of riveting points, and the riveting points are arranged in riveting point notches arranged on the upper end of the rotor housing.

[0008] Wherein, a corresponding dust cover is sleeved on the upper outer side of the rotor housing.

[0009] Wherein, a plurality of fixing ears are arranged on the upper edge of the side end of the stator bracket.

[0010] Among them, anti-fooling positions that match each other are provided between the stator bracket, the PCB board, and the upper end of the stator core.

[0011] Among them, the stator bracket is sleeved on the upper end of the rotating shaft through a bracket bearing.

[0012] The beneficial effects of the present utility model are as follows: An outer-rotor brushless motor applied to an elevator door switch, a rotor assembly and a stator assembly in the present utility model, and the rotor assembly is sleeved on the upper outer side of the stator assembly. The rotor assembly is provided with a rotating shaft, and a rotor housing is installed at the upper end of one end of the rotating shaft. The rotor housing is installed on the rotating shaft through a shaft sleeve and a rotor bearing. A plurality of magnet steel sheets arranged in a ring are installed at the upper end of the inner wall of the rotor housing, and the magnet steel sheets are fixedly installed at the upper end of the inner wall of the rotor housing through corresponding and matching magnet steel limit frames. The stator assembly is provided with a stator bracket, and the stator bracket is installed on the upper end of the rotating shaft through a bracket bearing. A PCB board and a stator core corresponding to and matching the magnet steel sheets are installed at the upper end of the stator bracket, and the stator core is arranged inside the magnet steel sheets. By sleeving the rotor assembly on the upper outer side of the stator assembly, the present utility model realizes the function of an outer-rotor brushless motor, with small volume, long service life, low noise, high motor efficiency, large torque, and high stability. Therefore, the present utility model has the advantages of novel design, simple structure, small volume, long service life, low noise, high motor efficiency, large torque, and high stability. Description of the Drawings

[0013] The present utility model will be further described below with the aid of the drawings, but the embodiments in the drawings do not constitute any limitation to the present utility model.

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the rotor assembly of the present utility model;

[0016] Figure 3 is Figure 2 a partial enlarged structural diagram of

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

[0018] In Figures 1-4 include:

[0019] 1 - Rotor assembly 11 - Rotating shaft

[0020] 12 - Rotor housing 121 - Shaft sleeve

[0021] 1211 - Riveting point 122 - Rotor bearing

[0022] 123 - Riveting point notch 13 - Magnet steel sheet

[0023] 131 - Magnet steel limiting frame 14 - Dust cover

[0024] 2 - Stator assembly 21 - Stator bracket

[0025] 211 - Bracket bearing 22 - PCB board

[0026] 23 - Stator core 24 - Fixing ear

[0027] 25 - Anti - misalignment position. Specific embodiments

[0028] The present utility model will be described below in conjunction with specific embodiments.

[0029] As shown in Figures 1-4 A kind of outer - rotor brushless motor applied to elevator door switches, comprising a rotor assembly 1 and a stator assembly 2, and the rotor assembly 1 is sleeved on the upper outer side of the stator assembly 2. The rotor assembly 1 is provided with a rotating shaft 11, and at the upper end of one end of the rotating shaft 11, a rotor housing 12 is installed. And the rotor housing 12 is installed on the rotating shaft 11 through a shaft sleeve 121 and a rotor bearing 122. At the upper end of the inner wall of the rotor housing 12, a plurality of magnet steel sheets 13 arranged in a circular array are installed, and the magnet steel sheets 13 are fixedly installed on the upper end of the inner wall of the rotor housing 12 through corresponding magnet steel limiting frames 131. The stator assembly 2 is provided with a stator bracket 21, and the stator bracket 21 is installed on the upper end of the rotating shaft 11 through a bracket bearing 211. On the upper end of the stator bracket 21, a PCB board 22 and a stator core 23 corresponding to and matching the magnet steel sheets 13 are installed, and the stator core 23 is arranged inside the magnet steel sheets 13.

[0030] Preferably in this embodiment, the shaft sleeve 121 is fixedly installed on the rotor housing 12 by riveting, and the shaft sleeve 121 is provided with a plurality of riveting points 1211, and the riveting points 1211 are arranged in the riveting point notches 123 arranged at the upper end of the rotor housing 12, improving the motor efficiency and stability.

[0031] Furthermore, a corresponding dust cover 14 is sleeved on the upper outer side of the rotor housing 12, effectively preventing dust from entering and providing the durability and stability of the motor.

[0032] Furthermore, a plurality of fixing ears 24 are arranged at the upper edge of the side end of the stator bracket 21, facilitating the fixation of the motor.

[0033] Furthermore, corresponding anti - misalignment positions 25 are arranged at the upper ends of the stator bracket 21, the PCB board 22 and the stator core 23, effectively improving the precision and stability of the motor.

[0034] Further, the stator bracket 21 is sleeved on the upper end of the rotating shaft 11 through a bracket bearing 211.

[0035] For further explanation, the outer rotor brushless motor function is realized by sleeving the rotor assembly 1 on the outer upper end of the stator assembly 2, which has the advantages of small size, long service life, low noise, high motor efficiency, large torque and high stability. Therefore, the present invention has the advantages of novel design, simple structure, small size, long service life, low noise, high motor efficiency, large torque and high stability.

[0036] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. An outer rotor brushless motor used in an elevator door switch, characterized in that: A rotor assembly (1) and a stator assembly (2), wherein the rotor assembly (1) is sleeved on the outer upper end of the stator assembly (2), the rotor assembly (1) is provided with a rotating shaft (11), and a rotor casing (12) is installed on the upper end of one end of the rotating shaft (11), and the rotor casing (12) is installed on the rotating shaft (11) through a shaft sleeve (121) and a rotor bearing (122), and a plurality of magnetic steel sheets (13) arranged in an annular shape are installed on the upper end of the inner wall of the rotor casing (12), and the magnetic steel sheets (13) is fixedly mounted on the upper end of the inner wall of the rotor housing (12) through a corresponding matching magnetic steel limit frame (131), the stator assembly (2) is provided with a stator bracket (21), and the stator bracket (21) is mounted on the upper end of the rotating shaft (11) through a bracket bearing (211), and a PCB board (22) and a stator core (23) corresponding to the magnetic steel sheet (13) are mounted on the upper end of the stator bracket (21), and the stator core (23) is arranged on the inner side of the magnetic steel sheet (13).

2. The outer rotor brushless motor used for elevator door switch according to claim 1, characterized in that: The shaft sleeve (121) is fixedly mounted on the rotor casing (12) by riveting, and the shaft sleeve (121) is provided with a plurality of riveting points (1211), and the riveting points (1211) are arranged at the upper end of the rotor casing (12) and in riveting point notches (123).

3. The outer rotor brushless motor used for elevator door switch according to claim 1, characterized in that: A corresponding dust cover (14) is sleeved on the upper outer end of the rotor casing (12).

4. The outer rotor brushless motor used for elevator door switch according to claim 1, characterized in that: A plurality of fixing ears (24) are provided at the upper end of the side edge of the stator bracket (21).

5. The outer rotor brushless motor used for elevator door switch according to claim 1, characterized in that: The stator bracket (21), the PCB board (22) and the upper end of the stator core (23) are provided with corresponding matching anti-stuck positions (25).

6. The outer rotor brushless motor used for elevator door switch according to claim 1, characterized in that: The stator bracket (21) is sleeved on the upper end of the rotating shaft (11) via a bracket bearing (211).

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