CN202918083U - New type motor rotor injection molding structure - Google Patents

New type motor rotor injection molding structure Download PDF

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Publication number
CN202918083U
CN202918083U CN 201220556328 CN201220556328U CN202918083U CN 202918083 U CN202918083 U CN 202918083U CN 201220556328 CN201220556328 CN 201220556328 CN 201220556328 U CN201220556328 U CN 201220556328U CN 202918083 U CN202918083 U CN 202918083U
Authority
CN
China
Prior art keywords
iron core
supporting sleeve
rotor
motor rotor
magnetic
Prior art date
Application number
CN 201220556328
Other languages
Chinese (zh)
Inventor
陈秀荣
环宇平
Original Assignee
江苏富天江电子电器有限公司
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 江苏富天江电子电器有限公司 filed Critical 江苏富天江电子电器有限公司
Priority to CN 201220556328 priority Critical patent/CN202918083U/en
Application granted granted Critical
Publication of CN202918083U publication Critical patent/CN202918083U/en

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Abstract

The utility model discloses a new type motor rotor injection molding structure. The new type motor rotor injection molding structure is composed of a sintered magnetic tile, a magnetic circuit iron core, and PBT engineering plastics. The sintered magnetic tile is arranged on the outside of the magnetic circuit iron core, and the upper end and the lower end of the magnetic circuit iron core are provided with an upper supporting sleeve and a lower supporting sleeve respectively, wherein the outer diameter of the upper supporting sleeve and the outer diameter of the lower supporting sleeve are the same as the outer diameter of the magnetic circuit iron core. According to the utility model, the rotor has the advantage of good overall dynamic balance performance, in the high temperature and low temperature change processes, the sintered magnetic tile is supported by the upper supporting sleeve and the lower supporting sleeve, so the rotor will not be cracked due to the contraction in the inner diameter direction in the temperature changing process.

Description

The Novel motor rotor injection structure
Technical field
The utility model relates to a kind of rotor structure of dc brushless motor, particularly relates to the Novel motor rotor injection structure that a kind of dc brushless motor is used sintering magnetic shoe and magnetic loop integrated injection moulding.
Technical background
Traditional dc brushless motor rotor, permanent magnetic tile is when installing fixedly, the mode that employing mounts, with glue magnetic shoe and rotor core burst are mounted, after adopting this process to install, the poor defective of the whole dynamic balance performance of location deviation, rotor is brought hidden danger to vibration and the noise of motor rotation.Some producers have to increase calibration correction dynamic balancing operation in order to eliminate rotor dynamic balancing, have increased manufacturing cost.Also has a kind of injection moulding process, be that the sintering magnetic shoe directly is injection-moulded in by terephthalate (PBT) engineering plastic with magnetic loop, the known defective of the method has: the magnetic shoe crackle can appear in the rotor behind the injection molded, after such rotor is assembled into motor, after the normal time running, because the vibration effect of motor itself, crackle constantly enlarges, cause at last motor noise, vibration to increase, the magnetic shoe fragment peels off and causes motor rotation blockage stuck when serious.
Summary of the invention
The purpose of this utility model will provide a kind of Novel motor rotor injection structure exactly, and it can overcome the defective that above two kinds of methods exist well.
The purpose of this utility model is to realize like this, the Novel motor rotor injection structure is comprised of sintering magnetic shoe, magnetic loop iron core, PBT engineering plastics, it is characterized in that: the arranged outside of magnetic loop iron core has the sintering magnetic shoe, the upper/lower terminal of described magnetic loop iron core is respectively arranged with upper support cover and lower support cover, and described upper support cover is identical with the external diameter of magnetic loop iron core with the external diameter of lower support cover.
The whole dynamic balance performance of the utility model rotor is good, and rotor is in high temperature, low temperature change procedure, and the sintering magnetic shoe is owing to being subject to the support of upper and lower support set, does not shrink and cracks to internal diameter direction in the time of can be because of variations in temperature.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is A-A cutaway view of the present utility model.
1, sintering magnetic shoe, 2, the magnetic loop iron core, 3, the upper support cover, 4, the lower support cover, 5, the PBT engineering plastics.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
The Novel motor rotor injection structure is by sintering magnetic shoe 1, magnetic loop iron core 2, PBT engineering plastics 5 form, it is characterized in that: the arranged outside of magnetic loop iron core 2 has sintering magnetic shoe 1, described magnetic loop iron core 2 upper, lower two ends are respectively arranged with upper support cover 3 and lower support cover 4, described upper support cover 3 is identical with the external diameter of magnetic loop iron core 2 with the external diameter of lower support cover 4, sintering magnetic shoe 1 part that exceeds of magnetic loop both sides has just had support like this, above-mentioned workpiece is placed in the particular manufacturing craft, be injection molded into one with PBT engineering plastics 5, the rotor of this sintering magnetic shoe integral molded plastic, the whole dynamic balance performance of rotor is good.

Claims (1)

1. Novel motor rotor injection structure, formed by sintering magnetic shoe (1), magnetic loop iron core (2), PBT engineering plastics (5), it is characterized in that: the arranged outside of magnetic loop iron core (2) has sintering magnetic shoe (1), the upper/lower terminal of described magnetic loop iron core (2) is respectively arranged with upper support cover (3) and lower support cover (4), and the external diameter of described upper support cover (3) and lower support cover (4) is identical with the external diameter of magnetic loop iron core (2).
CN 201220556328 2012-10-29 2012-10-29 New type motor rotor injection molding structure CN202918083U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220556328 CN202918083U (en) 2012-10-29 2012-10-29 New type motor rotor injection molding structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220556328 CN202918083U (en) 2012-10-29 2012-10-29 New type motor rotor injection molding structure

Publications (1)

Publication Number Publication Date
CN202918083U true CN202918083U (en) 2013-05-01

Family

ID=48166359

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220556328 CN202918083U (en) 2012-10-29 2012-10-29 New type motor rotor injection molding structure

Country Status (1)

Country Link
CN (1) CN202918083U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104242578A (en) * 2014-10-20 2014-12-24 湖州南洋电机有限公司 Washing machine motor with mute function
CN104269949A (en) * 2014-10-20 2015-01-07 湖州南洋电机有限公司 Washing machine motor rotor with mute function
CN104518589A (en) * 2013-09-27 2015-04-15 安徽明腾永磁机电设备有限公司 Middle-large size high speed rare-earth permanent magnet motor magnetic steel locking structure
CN104753266A (en) * 2015-03-31 2015-07-01 湖北惠通能动力实业有限公司 Motor rotor assembling process
CN104518584B (en) * 2013-09-27 2017-01-04 安徽明腾永磁机电设备有限公司 Permanent magnetic electric machine rotor iron core

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104518589B (en) * 2013-09-27 2017-12-15 安徽明腾永磁机电设备有限公司 Rare-earth permanent magnet motor rotor structure
CN104518589A (en) * 2013-09-27 2015-04-15 安徽明腾永磁机电设备有限公司 Middle-large size high speed rare-earth permanent magnet motor magnetic steel locking structure
CN104518584B (en) * 2013-09-27 2017-01-04 安徽明腾永磁机电设备有限公司 Permanent magnetic electric machine rotor iron core
CN104242578A (en) * 2014-10-20 2014-12-24 湖州南洋电机有限公司 Washing machine motor with mute function
CN104269949B (en) * 2014-10-20 2017-02-15 湖州南洋电机有限公司 Washing machine motor rotor with mute function
CN104242578B (en) * 2014-10-20 2017-04-05 湖州南洋电机有限公司 Motor for washer with mute function
CN104269949A (en) * 2014-10-20 2015-01-07 湖州南洋电机有限公司 Washing machine motor rotor with mute function
CN104753266A (en) * 2015-03-31 2015-07-01 湖北惠通能动力实业有限公司 Motor rotor assembling process

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