CN220964416U

CN220964416U - Brushless motor

Info

Publication number: CN220964416U
Application number: CN202322020094.6U
Authority: CN
Inventors: 范桂芳
Original assignee: Huizhou Feishun Technology Co ltd
Current assignee: Huizhou Feishun Technology Co ltd
Priority date: 2023-07-28
Filing date: 2023-07-28
Publication date: 2024-05-14
Anticipated expiration: 2033-07-28

Abstract

The utility model discloses a brushless motor, which comprises a rotor, a stator, a mounting piece, a rotating shaft and a connecting cover, wherein the stator is mounted on the mounting piece, the rotor is arranged on the periphery of the stator, the connecting cover is sleeved on the rotor, the connecting cover is connected with the rotating shaft, one side of the stator is covered by the connecting cover, the other side of the stator is exposed, the connecting cover is provided with a through hole, and the through hole is communicated with one side of the stator covered by the connecting cover. In the utility model, the installation of the installation piece can facilitate the installation and the fixation of the utility model on an external device, one side of the stator is exposed, and the other side of the stator is covered with the connecting cover, but the connecting cover is correspondingly provided with the through hole, so that the stator can correspondingly radiate heat through the two sides of the stator when in use, thereby avoiding overheat of the stator as much as possible and improving the working reliability of the utility model.

Description

Brushless motor

Technical Field

The utility model relates to the field of motor design, in particular to a brushless motor.

Background

Along with the development of technology, the conventional brush motor gradually forms a brushless motor without carbon brushes, and the brushless motor has the advantages of low noise, high energy efficiency and the like and is durable, so that the brush motor is widely used in daily life.

Brushless motors are often classified into an inner rotor type and an outer rotor type, and a rotor on an outer rotor brushless motor is disposed outside a stator. However, in actual use, the main heating position of the conventional brushless motor is generally the stator, and the stator is arranged on the inner side of the rotor, so that the heat dissipation effect of the brushless motor is difficult to be ensured, and the problems of overheating and the like easily occur after long-time use, so that the working reliability of the brushless motor is affected.

Disclosure of utility model

The present utility model aims to provide a brushless motor which can solve one or more of the above problems.

According to one aspect of the present utility model, there is provided a brushless motor including a rotor, a stator mounted on the mounting member, a rotating shaft, and a connection cover, the rotor being provided at a periphery of the stator, the connection cover being fitted over the rotor, the connection cover being connected to the rotating shaft, one side of the stator being covered by the connection cover, the other side of the stator being exposed, the connection cover being provided with a through hole communicating with one side of the stator covered by the connection cover.

The beneficial effects of the utility model are as follows: in the utility model, the installation of the installation piece can facilitate the installation and the fixation of the utility model on an external device, one side of the stator is exposed, and the other side of the stator is covered with the connecting cover, but the connecting cover is correspondingly provided with the through hole, so that the stator can correspondingly radiate heat through the two sides of the stator when in use, thereby avoiding overheat of the stator as much as possible and improving the working reliability of the utility model.

In some embodiments, the mounting member includes a sleeve member and a connecting member, the stator is sleeved on the sleeve member, the sleeve member is provided with a spacer, the spacer abuts against one side of the stator, and the connecting member is connected to the spacer. The connecting piece can be used for being directly connected with an external device, so that the installation of the installation piece on the external device is realized, and the spacing section is arranged to enable a certain distance to be reserved between the connecting piece and one side of the stator, so that the heat dissipation effect at the position is ensured.

In some embodiments, the present utility model further comprises a first bearing embedded in the kit, the first bearing being sleeved on the rotating shaft. The first bearing can carry out certain spacing to the pivot, reduces the pivot and appears rotating the removal beyond to this reduces the vibration that the pivot produced at the during operation.

In some embodiments, the present utility model further comprises a second bearing embedded within the spacer, the second bearing being sleeved on the shaft. The second bearing can carry out certain spacing to the pivot, reduces the pivot and appears rotating the removal beyond to this reduces the vibration that the pivot produced at the during operation.

In some embodiments, the rotor comprises a rotor shell, a permanent magnet and a retainer, wherein the permanent magnet is arranged on the retainer and embedded in the rotor shell, the permanent magnet is arranged on the periphery of the stator, the rotor shell is fixedly connected with the retainer, and the connecting cover is sleeved on the rotor shell.

In some embodiments, the stator includes a core and windings wound on the core.

In some embodiments, the connecting cover is provided with a hole, the rotating shaft penetrates out of the hole, and the rotating shaft is fixedly connected with the inner wall of the hole. The contact area of the connecting cover and the rotating shaft can be increased by the arrangement of the holes, and the connection reliability of the rotating shaft and the connecting cover is improved.

Drawings

Fig. 1 is a schematic structural view of a brushless motor according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a brushless motor according to an embodiment of the present utility model.

Fig. 3 is an exploded view showing a structural schematic of a brushless motor according to an embodiment of the present utility model.

Fig. 4 is a cross-sectional view showing a schematic structure of a brushless motor according to an embodiment of the present utility model.

In the figure: 1. rotor, 2, stator, 3, mounting, 4, shaft, 5, connecting cover, 6, first bearing, 7, second bearing, 11, rotor housing, 12, permanent magnet, 13, cage, 21, core, 31, sleeve, 32, connecting piece, 311, spacer, 51, hole, 52.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, 2, 3 and 4, a brushless motor of the present utility model includes a rotor 1, a stator 2, a mounting 3, a rotating shaft 4 and a connection cover 5.

The stator 2 includes a core 21 and windings (not shown) wound around the core 21.

The mounting 3 comprises a sleeve 31 and a connector 32. The iron core 21 of the stator 2 is fixedly sleeved on the sleeve 31, the sleeve 31 is provided with a spacing section 311, the spacing section 311 is abutted with one side of the stator 2, a plurality of connecting pieces 32 are provided, and all the connecting pieces 32 are connected to the spacing section 311 in a uniform and integrally formed mode.

The rotor 1 comprises a rotor shell 11, permanent magnets 12 and a retainer 13, wherein the number of the permanent magnets 12 can be multiple, all the permanent magnets 12 are arranged on the retainer 13 and fixedly embedded in the rotor shell 11, the permanent magnets 12 are arranged on the periphery of the stator 2, the retainer 13 is fixedly connected with the rotor shell 11, and the connecting cover 5 is fixedly sleeved on the rotor shell 11, so that the connecting cover 5 can rotate along with the rotation of the rotor shell 11.

The middle part of connecting lid 5 is equipped with hole 51, and pivot 4 wears out from hole 51, and pivot 4 and the inner wall fixed connection of hole 51 for pivot 4 can rotate along with the rotation of connecting lid 5.

The brushless motor of the utility model further comprises a first bearing 6 and a second bearing 7, wherein a cavity is arranged in the sleeve 31, the cavity extends into the interval section 311, the first bearing 6 is fixedly embedded in the cavity of the sleeve 31, the first bearing 6 is sleeved on the rotating shaft 4, the second bearing 7 is fixedly embedded in the cavity of the interval section 311, and the second bearing 7 is sleeved on the rotating shaft 4. The first bearing 6 and the second bearing 7 can both limit the rotating shaft 4 to a certain extent, and reduce the movement of the rotating shaft 4 beyond rotation, so that the vibration of the rotating shaft 4 during working is reduced.

One side of the stator 2 is covered by the connection cover 5, and the connection cover 5 is provided with through holes 52, and all the through holes 52 communicate with the side of the stator 2. The other side of the stator 2 is exposed, and the side of the stator 2 is abutted against the spacer 311.

When the brushless motor is used, the windings of the stator 2 can be electrically connected with an external circuit, so that the windings can generate an electromagnetic field to drive the permanent magnets 12 to rotate, the rotation of the permanent magnets 12 can drive the rotor shell 11 to rotate, the connecting cover 5 sleeved on the rotor shell 11 can also rotate along with the rotation, the rotating shaft 4 connected with the connecting cover 5 can rotate along with the rotation, and the rotating shaft 4 can output power.

The connecting piece 32 on the mounting piece 3 of the utility model can be connected with an external device through bolts, so that the utility model is effectively fixed on the external device, and when in use, as one side of the stator 2 is exposed, the other side is covered with the connecting cover, but the connecting cover 5 on the side is correspondingly provided with the through holes 52, thereby effectively dissipating heat emitted by the stator 2 to avoid overheat in the use process. In addition, the mounting member 3 is provided with the spacing section 311, which can effectively enable the stator 2 of the present utility model to be too close to an external device mounted by the present utility model, and influence the heat dissipation of the stator 2, so as to further improve the working reliability of the stator 2.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. The brushless motor is characterized by comprising a rotor, a stator, a mounting piece, a rotating shaft and a connecting cover, wherein the stator is mounted on the mounting piece, the rotor is arranged on the periphery of the stator, the connecting cover is sleeved on the rotor, the connecting cover is connected with the rotating shaft, one side of the stator is covered by the connecting cover, the other side of the stator is exposed, the connecting cover is correspondingly provided with a through hole, the through hole is communicated with one side of the stator covered by the connecting cover, heat emitted by the stator can be effectively dissipated,

The mounting piece comprises a sleeve piece and a connecting piece, wherein the stator is sleeved on the sleeve piece, the sleeve piece is provided with a spacing section, the spacing section is propped against one side of the stator, the number of the connecting pieces is multiple, and all the connecting pieces are connected to the spacing section in a uniform body forming mode.

2. The brushless motor of claim 1, comprising a first bearing embedded in the sleeve, the first bearing being sleeved on the shaft.

3. The brushless motor of claim 1, comprising a second bearing embedded in the spacer, the second bearing being sleeved on the shaft.

4. The brushless motor of claim 1, wherein the rotor comprises a rotor housing, permanent magnets and a retainer, the permanent magnets are mounted on the retainer and embedded in the rotor housing, the permanent magnets are arranged on the periphery of the stator, the rotor housing is fixedly connected with the retainer, and the connecting cover is sleeved on the rotor housing.

5. The brushless motor of claim 1 wherein the stator comprises a core and windings, the windings being wound on the core.

6. The brushless motor of claim 1 wherein the connecting cover is provided with a hole, the shaft is penetrated from the hole, and the shaft is fixedly connected with an inner wall of the hole.