CN212012331U

CN212012331U - Brushless motor with low-loss bearing

Info

Publication number: CN212012331U
Application number: CN202021044695.0U
Authority: CN
Inventors: 黄志杰; 李量; 刘兰刚; 陈小龙; 赵卫国
Original assignee: Wuxi New Great Power Electrical Machine Co Ltd
Current assignee: Wuxi New Great Power Electrical Machine Co Ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2020-11-24
Anticipated expiration: 2030-06-09

Abstract

The utility model relates to a brushless motor technical field discloses a brushless motor with low-loss bearing, including the procapsid, the procpsid rear side is seen the lid and is closed the apron, and apron middle part fixedly connected with rear bearing is located the fixed embedding in procapsid front end middle part has the fore bearing, and procapsid inner chamber level is provided with the rotor, and the fixed through connection in middle part of rotor has the main shaft, is located procapsid lateral wall terminal surface prolongs its length direction and sets up a plurality of heat dissipation through-holes that are the annular and distribute. The utility model discloses drive the impeller that induced drafts when the main shaft is rotatory and carry out high-speed rotation, the wind regime of production is discharged in a plurality of heat dissipation through-holes of casing in the past, and the heat that produces the procapsid is taken away at this in-process to outside dust can not get into and adhere to on the rotor, thereby greatly reduced the resistance of drill operation, thereby reduce the motor loss, and because the integration has radiating fin can reach abundant radiating effect on the casing in the front.

Description

Brushless motor with low-loss bearing

Technical Field

The utility model relates to a brushless motor technical field specifically is a brushless motor with low-loss bearing.

Background

At present, most of existing brushless warm air motors use oil-containing bearings, the oil-containing bearings are complex in assembly structure process and difficult to disassemble and replace, the oil-containing bearings are easy to wear and tear during long-time work, the heating is high, the service life of the motor is short, and the stability and the reliability of the motor cannot be guaranteed.

The heat dissipation mode to brushless motor among the prior art all is through flabellum heat dissipation of blowing, but the motor cavity that distributes by the rotor leads to outside dust to enter into the motor inside and attached to rotor and bearing inner wall with what outside communicating, can not often clear up, leads to the great problem of motor loss.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a brushless motor with low-loss bearing has solved the problem that proposes in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a brushless motor with a low-loss bearing comprises a front shell, wherein a cover plate covers the rear side of the front shell, a rear bearing is fixedly connected to the middle of the cover plate, a front bearing is fixedly embedded into the middle of the front end of the front shell, a rotor is horizontally arranged in an inner cavity of the front shell, a main shaft is fixedly connected to the middle of the rotor in a penetrating mode, and a plurality of heat dissipation through holes distributed in an annular mode are formed in the end face of the side wall of the front shell along the length direction of the end face;

the rear end face of the main shaft is connected with an air draft impeller through a fixing bolt, and the cover plate right side fixing cover is closed with a rear shell.

As an optimal implementation mode of the utility model, the back casing is fixed to twist with apron and procapsid through four at least stock bolts with the model all around.

As a preferred embodiment of the present invention, the front end of the main shaft is fixed to the middle shaft of the front bearing.

As a preferred embodiment of the present invention, the rear end of the main shaft is fixed to the middle shaft of the rear bearing.

As an optimal implementation manner of the present invention, the ventilation holes are disposed on the right side of the rear housing and distributed in a horizontal plane.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a with the procapsid, apron and back casing splice each other in proper order, then use four stock bolts to close the three fixed seal lid, it is high-speed rotatory to drive the induced draft impeller when the main shaft is rotatory, the wind regime of production is discharged from a plurality of heat dissipation through-holes of casing in the past, the heat that produces the procapsid is taken away at this in-process, and outside dust can not get into and adhere to on the rotor, thereby greatly reduced the resistance of brill operation, thereby reduce the motor loss, and because the integration has radiating fin can reach abundant radiating effect on the casing in the front.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic view of an overall structure of a brushless motor with a low-loss bearing according to the present invention;

fig. 2 is a schematic diagram of a sectional structure of an inner cavity of a brushless motor with a low-loss bearing according to the present invention.

In the figure: 1. a front housing; 2. a main shaft; 3. a front bearing; 4. a rear housing; 5. a heat dissipating fin; 6. a rotor; 7. a cover plate; 8. an air draft impeller; 9. fixing the bolt; 10. a vent hole; 11. a long rod bolt; 12. a rear bearing; 13. and the heat dissipation through hole.

The utility model provides an instrument all can be through market purchase and private customization acquisition.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly, and may for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: a brushless motor with a low-loss bearing comprises a front shell 1, wherein a cover plate 7 covers the rear side of the front shell 1, a rear bearing 12 is fixedly connected to the middle of the cover plate 7, a front bearing 3 is fixedly embedded in the middle of the front end of the front shell 1, a rotor 6 is horizontally arranged in an inner cavity of the front shell, a main shaft 2 is fixedly connected to the middle of the rotor 6 in a penetrating mode, and a plurality of heat dissipation through holes 13 which are distributed annularly are formed in the end face of the side wall of the front shell 1 along the length direction of the end;

1 lateral wall fixedly connected with of procapsid has a plurality of radiating fin 5 that wait angular distribution, and radiating fin 5 can reach abundant radiating effect, and the rear end face that is located main shaft 2 is connected with convulsions impeller 8 through fixing bolt 9, and it has rear shell 4 to be located 7 right side fixed lids of apron, and fixing bolt 9 can be demolishd in the later stage and the convulsions impeller 8 is changed.

In this embodiment (see fig. 2), the periphery of the rear housing 4 is screwed with the cover plate 7 and the front housing 1 by at least four long rod bolts 11 of the same type, so that the front housing 1 and the rear housing 4 can be conveniently removed in the later stage.

In this embodiment (see fig. 2), the front end of the main shaft 2 is fixed to the middle shaft of the front bearing 3.

In this embodiment (see fig. 2), the rear end of the main shaft 2 is fixed to the middle shaft of the rear bearing 12.

In this embodiment (see fig. 2), a plurality of ventilation holes 10 are formed in the right side of the rear housing 4 in a horizontal manner and are distributed at equal intervals, so that the ventilation impeller 8 can generate a communicated air source when working.

When a brushless motor with a low-loss bearing is used, it should be noted that the present invention relates to a brushless motor with a low-loss bearing, the components are all universal standard components or components known by those skilled in the art, and the structure and principle of the brushless motor are known by the technical manual or by the conventional experimental method.

During the use, with procapsid 1, apron 7 and back casing 4 splice each other in proper order, then use four stock bolts 11 to close the three fixed seal lid, it is high-speed rotatory to drive the impeller 8 of induced drafting when main shaft 2 is rotatory, the wind regime of production is discharged from a plurality of heat dissipation through-holes 13 of procapsid 1, the heat that produces procapsid 1 in this process is taken away, and outside dust can not get into and attach to on rotor 6, thereby greatly reduced the resistance of drill operation, thereby reduce the motor loss, and because it can reach abundant radiating effect to integrate radiating fin 5 on procapsid 1.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A brushless electric machine with low-loss bearing, comprising a front housing (1), characterized in that: a cover plate (7) is covered on the rear side of the front shell (1), a rear bearing (12) is fixedly connected to the middle of the cover plate (7), a front bearing (3) is fixedly embedded in the middle of the front end of the front shell (1), a rotor (6) is horizontally arranged in an inner cavity of the front shell, a main shaft (2) is fixedly connected to the middle of the rotor (6) in a penetrating mode, and a plurality of annularly-distributed heat dissipation through holes (13) are formed in the end face of the side wall of the front shell (1) along the length direction of the end face;

procapsid (1) lateral wall fixedly connected with a plurality of radiating fin (5) of waiting angular distribution are located the rear end face of main shaft (2) is connected with convulsions impeller (8) through fixing bolt (9), is located apron (7) right side fixed cover has closed back casing (4).

2. A brushless electric machine having a low loss bearing according to claim 1, wherein: the periphery of the rear shell (4) is fixedly screwed with the cover plate (7) and the front shell (1) through at least four long rod bolts (11) with the same type.

3. A brushless electric machine having a low loss bearing according to claim 1, wherein: the front end part of the main shaft (2) is fixedly penetrated through a middle shaft of the front bearing (3).

4. A brushless electric machine having a low loss bearing according to claim 1, wherein: the rear end part of the main shaft (2) is fixedly penetrated through a middle shaft of the rear bearing (12).

5. A brushless electric machine having a low loss bearing according to claim 1, wherein: and a plurality of ventilation holes (10) distributed at equal intervals are horizontally arranged on the right side surface of the rear shell (4).