CN105703544A

CN105703544A - Motor

Info

Publication number: CN105703544A
Application number: CN201410708440.2A
Authority: CN
Inventors: 马庆; 马庆一
Original assignee: TONGSHENG VEHICLE INDUSTORY Co Ltd SUZHOU INDUSTRIAL GARDEN
Current assignee: Suzhou Tongsheng Electric Appliance Co., Ltd
Priority date: 2014-11-28
Filing date: 2014-11-28
Publication date: 2016-06-22
Anticipated expiration: 2034-11-28
Also published as: CN105703544B

Abstract

The present invention discloses a motor comprising a rotor, a stator which sleeves the rotor, a front cover which is arranged at the front side of the stator and is relatively fixed to the stator, and a back cover which is arranged at the back side of the stator and is relatively fixed to the stator. A plurality of rare earth magnets in annular uniform spaced distribution is fixed at the periphery of the rotor. The rare earth magnets are stripe structures and are parallel to the axis direction of the rotor. The back end of each of the rare earth magnets is raised from the back end surface of the rotor, and thus a magnet steel extending part projecting from the back end face of the rotor is formed. The back end of the back cover is provided with a receiving groove, and the bottom of the receiving groove is provided with an arc-shaped long hole. A Hall sensor is fixedly installed in the receiving groove and has three Hall chips in arc-shaped uniform space distribution. The Hall chips go through the arc-shaped long hole and are at the inner side of the magnet steel extending part. Compared with a motor with a traditional structure, the motor of the invention has the advantages of compact structure and easy production.

Description

A kind of motor

Technical field

The present invention relates to a kind of motor。

Background technology

The motor of internal rotor outer stator type, generally comprise rotor, be enclosed within rotor exterior stator, be located on front side of stator and with the relatively-stationary protecgulum of this stator, be located on rear side of stator and bonnet relatively-stationary with this stator。The periphery of rotor is fixed with multiple rare earth magnetic steel being distributed in annular uniform intervals, also include inlaying 3 Hall chips being arranged on inside stator core, Hall chip and the outer surface of rare earth magnetic steel on described rotor are apart from close, such Hall chip just can induce the angle between rare earth magnetic steel and Hall chip, thus knowing the position of rotor。

But, the motor of above-mentioned this structure, inlaying due to Hall chip is arranged on inside stator core, and Hall chip is embedded in wire casing, is also embedded on iron core, if being embedded on iron core, that will be slotted on iron core surface, and this structure not only increases iron core manufacture difficulty, and Hall chip is fixed and positioned all extremely onerous, Hall chip also cannot be compactly installed on an assembly, and the production technology of product is very poor。

Summary of the invention

The present invention seeks to: for the problems referred to above, it is provided that a kind of structure is more compact, be more easy to the motor of production。

The technical scheme is that a kind of motor, including rotor, be enclosed within described rotor exterior stator, be located on front side of described stator and with the relatively-stationary protecgulum of this stator and be located on rear side of described stator and bonnet relatively-stationary with this stator, the periphery of described rotor is fixed with the rare earth magnetic steel that several are the distribution of annular uniform intervals, described rare earth magnetic steel is strip structure and the axis direction being parallel to rotor layout, the rear end of each rare earth magnetic steel all protrudes from the rear end face of described rotor, thus forming the magnet steel extension protruding from described rotor rear end face；The rear end of described bonnet is provided with a storage tank, the bottom land of this storage tank offers a circular arc elongated hole, Hall element it is installed with in storage tank, described Hall element have three in circular arc uniform intervals the Hall chips of distribution, these three Hall chip both passes through described circular arc elongated hole and is in the inner side of described magnet steel extension。

The present invention, on the basis of technique scheme, also includes following preferred version:

Described Hall element offers two and connects through hole, the bottom land of described storage tank offers and is connected through hole two screwed holes one to one with described two, and described Hall element is to be fixed in described storage tank by the screw being located in described connection through hole and screwed hole。

Described storage tank is circular, and described bonnet is provided with the wire hole being positioned at this storage tank edge, and the stator lead-out wire of described stator is drawn by this wire hole。

Being provided with a central through hole on described protecgulum and bonnet, the rear and front end of described rotor is pivotally supported in the two central through hole by a bearing respectively。

Described rare earth magnetic steel has 16。

Described Hall element includes plastics patch panel and is fixed on the pcb board on this plastics patch panel, and the pin of described Hall chip is welded on described pcb board through described plastics patch panel。

The invention have the advantage that

1) Hall chip of hall sensor is arranged in the medial surface of rare earth magnetic steel by this motor very dexterously, and electric machine structure is compact and reasonable more, solves the difficult problem in a lot of structure。

2) common electric machine is all be embedded on stator by Hall chip, and its dismounting and installation are inconvenient for, and the manufacture of intraocular of the motor of this structure is quite big, and the pin of Hall chip is drawn also inconvenient。And the Hall element of this motor of the present invention and motor body adopt separate type design, simply ingenious, Hall element can disassemble easily from motor, can also be arranged on motor easily, loading onto Hall element is exactly Hall motor, and Hall element of dismantling is exactly without Hall motor。

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the invention will be further described:

Fig. 1 is one of exploded view of this electric bicycle motor of the embodiment of the present invention；

Fig. 2 is the two of the exploded view of this electric bicycle motor of the embodiment of the present invention；

Fig. 3 is the three of the exploded view of this electric bicycle motor of the embodiment of the present invention；

Wherein: 1-rotor, 2-stator, 3-protecgulum, 4-bonnet, 4a-storage tank, 4b-circular arc elongated hole, 4c-screwed hole, 4d-wire hole, 5-rare earth magnetic steel, 5a-magnet steel extension, 6-Hall element, 6a-Hall chip, 6b-connects through hole, 6c-plastics patch panel, 6d-PCB plate, 7-central through hole, 8-bearing。

Detailed description of the invention

Fig. 1～Fig. 3 illustrates a specific embodiment of this motor of the present invention, this motor is internal rotor outer stator type motor, it includes rotor 1, be enclosed within the stator 2 of described rotor exterior, be located on front side of described stator and with the relatively-stationary protecgulum of this stator 3 and be located on rear side of described stator and bonnet 4 relatively-stationary with this stator, the periphery of described rotor 1 is fixed with the rare earth magnetic steel 5 that several are the distribution of annular uniform intervals, and described rare earth magnetic steel 5 is strip structure and the axis direction being parallel to rotor 1 layout。The quantity of rare earth magnetic steel 5 described in this example has 16。

The key improvements of the present embodiment is in that: the rearward end of each rare earth magnetic steel 5 has been carried out adding long process by this example, the rear end making each rare earth magnetic steel 5 all extends back certain length and protrudes from the rear end face of rotor 1, thus forming the magnet steel extension 5a protruding from described rotor 1 rear end face。The rear end of described bonnet 4 is provided with a storage tank 4a, and the bottom land of this storage tank 4a offers a circular arc elongated hole 4b。Hall element 6 it is installed with in storage tank 4a, described Hall element 6 has three Hall chip 6a being distributed in circular arc uniform intervals, these three Hall chip 6a both passes through described circular arc elongated hole 4b and is exactly in the inner side of described magnet steel extension 5a, Hall chip 6a faces the medial surface of magnet steel extension 5a, thus serving the effect of detection rotor-position。

Described Hall element 6 is fixed in described storage tank 4a by following version: offers two on Hall element 6 and connects through hole 6b, the bottom land of storage tank 4a offers and is connected through hole 6b two screwed hole 4c one to one with described two, and described Hall element 6 is to be fixed in described storage tank 4a by the screw being located in described connection through hole 6b and screwed hole 4c。

In the present embodiment, described storage tank 4a is circular, and described bonnet 4 is provided with the wire hole 4d being positioned at this storage tank edge, and the stator lead-out wire of described stator 2 is drawn by this wire hole 4d, and this structure is very ingenious。

Being provided with a central through hole 7 on described protecgulum 3 and bonnet 4, the rear and front end of described rotor 1 is pivotally supported in the two central through hole 7 by a bearing 8 respectively。

Described Hall element 6 also includes plastics patch panel 6c and is fixed on the pcb board 6d on this plastics patch panel, and the pin of described Hall chip 6a is welded on described pcb board 6d through described plastics patch panel 6c。The signal lead-out wire that on pcb board 6d, welding is connected with extraneous parts。So both can conveniently draw the signal of telecommunication, the effect of fixing Hall chip can have been played again。

Need to by Hall element 6 from, when this motor is removed, only backing out and be located in the screw connected in through hole 6b and screwed hole 4c, then Hall element 6 is taken out from storage tank 4a, now this motor is without Hall motor。When need to be arranged on motor by Hall element 6, only Hall element 6 need to being placed in storage tank 4a, then wear and lock-screw in connecting through hole 6b and screwed hole 4c, now this motor is for there being Hall motor。

Certainly, above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow people will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this。All equivalent transformations done according to the spirit of main technical schemes of the present invention or modification, all should be encompassed within protection scope of the present invention。

Claims

1. a motor, including rotor (1), be enclosed within described rotor exterior stator (2), be located on front side of described stator and with the relatively-stationary protecgulum of this stator (3) and be located on rear side of described stator and with the relatively-stationary bonnet of this stator (4), the periphery of described rotor (1) is fixed with the rare earth magnetic steel (5) that several are the distribution of annular uniform intervals, described rare earth magnetic steel (5) is strip structure and the axis direction layout being parallel to rotor (1)

It is characterized in that: the rear end of each rare earth magnetic steel (5) all protrudes from the rear end face of described rotor (1), thus forming the magnet steel extension (5a) protruding from described rotor (1) rear end face；The rear end of described bonnet (4) is provided with a storage tank (4a), the bottom land of this storage tank (4a) offers a circular arc elongated hole (4b), Hall element (6) it is installed with in storage tank (4a), described Hall element (6) have three in circular arc uniform intervals the Hall chips (6a) of distribution, these three Hall chip (6a) both passes through described circular arc elongated hole (4b) and is in the inner side of described magnet steel extension (5a)。

2. motor according to claim 1, it is characterized in that: described Hall element (6) offers two and connects through hole (6b), the bottom land of described storage tank (4a) offers and is connected through hole (6b) two screwed holes (4c) one to one with described two, and described Hall element (6) is to be fixed in described storage tank (4a) by the screw being located in described connection through hole (6b) and screwed hole (4c)。

3. motor according to claim 1, it is characterized in that: described storage tank (4a) is circle, being provided with the wire hole (4d) being positioned at this storage tank edge on described bonnet (4), the stator lead-out wire of described stator (2) is drawn by this wire hole (4d)。

4. the motor according to claim 1 or 2 or 3, it is characterized in that: described protecgulum (3) and be provided with a central through hole (7) on bonnet (4), the rear and front end of described rotor (1) is pivotally supported in the two central through hole (7) by a bearing (8) respectively。

5. the motor according to claim 1 or 2 or 3, it is characterised in that: described rare earth magnetic steel (5) has 16。

6. the motor according to claim 1 or 2 or 3, it is characterized in that: described Hall element (6) includes plastics patch panel (6c) and the pcb board (6d) being fixed on this plastics patch panel, the pin of described Hall chip (6a) is welded on described pcb board (6d) through described plastics patch panel (6c)。