CN202395559U - Rotor sheet of squirrel cage type external rotor motor - Google Patents

Rotor sheet of squirrel cage type external rotor motor Download PDF

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Publication number
CN202395559U
CN202395559U CN2011204860583U CN201120486058U CN202395559U CN 202395559 U CN202395559 U CN 202395559U CN 2011204860583 U CN2011204860583 U CN 2011204860583U CN 201120486058 U CN201120486058 U CN 201120486058U CN 202395559 U CN202395559 U CN 202395559U
Authority
CN
China
Prior art keywords
rotor
sheet
punching
motor
squirrel cage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2011204860583U
Other languages
Chinese (zh)
Inventor
管风
杨镭
朱世友
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENGDU CSR MOTOR CO., LTD.
Original Assignee
CSR Chengdu Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CSR Chengdu Co Ltd filed Critical CSR Chengdu Co Ltd
Priority to CN2011204860583U priority Critical patent/CN202395559U/en
Application granted granted Critical
Publication of CN202395559U publication Critical patent/CN202395559U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a rotor sheet of a squirrel cage type external rotor motor, comprising a sheet, wherein rotor sheet grooves are evenly distributed along the circumference of the edges of the sheet; and air vents are formed on rotor teeth between the adjacent rotor sheet grooves at the circumference of the edges of the sheet. The rotor sheet of the squirrel cage type external rotor motor reduces the occupation of the yoke part of a rotor sheet, prevents temperature rise caused by ultrahigh flux density of the yoke part, and simultaneously improves the ventilation cooling effect of the whole motor and increases the temperature rise allowance of the motor.

Description

The punching of a kind of squirrel-cage External rotor electric machine rotor
Technical field
The utility model relates to the structure of motor rotor punching sheet, particularly relates to the punching of a kind of squirrel-cage External rotor electric machine rotor.
Background technology
As shown in Figure 1, more powerful at present squirrel-cage external rotor electric machine all is that the yoke portion in punching offers ventilation hole 1, to increase radiation effect of motor.But it is big that the heat that silicon steel sheet produces because of eddy current in the motor can not show a candle to the heat of sliver generation, and the position of ventilation hole 1 is far away from the bigger sliver position of heating temp, so radiating effect is not ideal enough.And external rotor electric machine punching yoke portion space is less, and the occupied meeting of yoke portion causes yoke portion magnetic close excessive and cause that temperature raises.
The utility model content
The purpose of the utility model just provides the punching of a kind of squirrel-cage External rotor electric machine rotor, can effectively promote the whole result of ventilating heat dissipation of motor, overcomes the weak point of above-mentioned prior art.
The purpose of the utility model realizes through following technical proposals:
The punching of a kind of squirrel-cage External rotor electric machine rotor comprises punching, is evenly distributed in the rotor punching groove along the punching edge, along offering ventilation hole on the rotor tooth between the punching edge circumference adjacent rotor punching groove.
The beneficial effect of the utility model is: simple in structure, reasonable in design, reduce taking of rotor punching yoke portion, and avoid yoke portion magnetic close excessive and cause that temperature raises, simultaneously, improve the result of ventilating heat dissipation of whole motor, improve the allowance of electric machine temperature rise.
Description of drawings
Fig. 1 is the structural representation of traditional squirrel-cage External rotor electric machine rotor punching;
Fig. 2 is the structural representation of the utility model;
Fig. 3 is the partial enlarged drawing at A place among Fig. 2.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing the utility model is further described.
As shown in Figures 2 and 3, the punching of a kind of squirrel-cage External rotor electric machine rotor comprises punching 2, is evenly distributed in rotor punching groove 3 along punching 2 edges, offers ventilation hole 4 on the rotor tooth 5 between the adjacent rotor punching groove 3.Rotor punching groove 3 sides and ventilation hole 4 sides are parallel to each other.
The position of the utility model ventilation hole 4 is nearer from the bigger sliver position of heating temp, good heat dissipation effect; Punching yoke portion does not offer the hole, reduces taking of rotor punching yoke portion, avoids yoke portion magnetic close excessive and cause that temperature raises, and simultaneously, improves the result of ventilating heat dissipation of whole motor, improves the allowance of electric machine temperature rise.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.

Claims (1)

1. squirrel-cage External rotor electric machine rotor punching comprises punching, is evenly distributed in the rotor punching groove along the punching edge, it is characterized in that: along offering ventilation hole on the rotor tooth between the punching edge circumference adjacent rotor punching groove.
CN2011204860583U 2011-11-30 2011-11-30 Rotor sheet of squirrel cage type external rotor motor Expired - Lifetime CN202395559U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204860583U CN202395559U (en) 2011-11-30 2011-11-30 Rotor sheet of squirrel cage type external rotor motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204860583U CN202395559U (en) 2011-11-30 2011-11-30 Rotor sheet of squirrel cage type external rotor motor

Publications (1)

Publication Number Publication Date
CN202395559U true CN202395559U (en) 2012-08-22

Family

ID=46670459

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204860583U Expired - Lifetime CN202395559U (en) 2011-11-30 2011-11-30 Rotor sheet of squirrel cage type external rotor motor

Country Status (1)

Country Link
CN (1) CN202395559U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112564358A (en) * 2020-11-10 2021-03-26 湖南科技大学 Design method of axial ventilation slot of alternating-current traction motor rotor tooth part

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112564358A (en) * 2020-11-10 2021-03-26 湖南科技大学 Design method of axial ventilation slot of alternating-current traction motor rotor tooth part

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20151228

Address after: 610000 Sichuan city of Chengdu province Chenghua District Erxian No. 31 North Bridge Road Room 513, room 515

Patentee after: CHENGDU CSR MOTOR CO., LTD.

Address before: 610051 Sichuan city of Chengdu province Chenghua District Second Bridge Road No. 31

Patentee before: CSR Chengdu Co., Ltd.

C41 Transfer of patent application or patent right or utility model
CX01 Expiry of patent term

Granted publication date: 20120822

CX01 Expiry of patent term