CN101789674B - Rotor support device of a step motor - Google Patents

Rotor support device of a step motor Download PDF

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Publication number
CN101789674B
CN101789674B CN2010100006476A CN201010000647A CN101789674B CN 101789674 B CN101789674 B CN 101789674B CN 2010100006476 A CN2010100006476 A CN 2010100006476A CN 201010000647 A CN201010000647 A CN 201010000647A CN 101789674 B CN101789674 B CN 101789674B
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CN
China
Prior art keywords
groove
support portion
medium pore
magnet
magnet support
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Application number
CN2010100006476A
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Chinese (zh)
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CN101789674A (en
Inventor
任大彬
尹相洪
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Moatech Co Ltd
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Moatech Co Ltd
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Publication date
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Publication of CN101789674A publication Critical patent/CN101789674A/en
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Publication of CN101789674B publication Critical patent/CN101789674B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type

Abstract

The invention relates to a rotor support device of a step motor. A magnet support part is formed using an iron sheet by compression processing technology and before forming a center hole, a groove with a diameter larger than that of the center hole is compressed and formed on the upper surface of the lower surface at the position of the center hole and the burrs generated during perforation are arranged around the groove to ensure the burrs not expose outside the groove without damage on a gasket. Because the magnet support part is formed using the iron sheet by compression processing technology, the production cost is saved, the weight is reduced and the pull-in torque character is improved.

Description

The rotor support device of stepping motor
Technical field
The present invention is specially the rotor support device that the magnet support portion of support rotor magnet has been carried out improved stepping motor about the rotor support device of stepping motor.
Background technology
As depicted in figs. 1 and 2, stepping motor comprises: cabinet 10; The upper flange 12 that is connected with the top of cabinet 10; The lower flange 13 that is connected with the bottom of cabinet 10; By the axle 14 of upper flange 12 and lower flange 13 supports; Be arranged on the outer surface of axle 14 and the bearing 16 between the upper flange 12; Be positioned at the magnet 20 of external member 26 1 sides; Be arranged on the magnet support portion 22 that is used for supporting magnet 20 on the axle 14.
The upside of magnet support portion 22 and downside are provided with plastics or packing ring made of iron 30,32, and to guarantee smoothly rotation, the below of downside packing ring 32 also is provided with elastic washer 34.
Magnet support portion 22 needs to form medium pore, in order to be installed on the axle 14, when medium pore is bored a hole, if there is burr (burr) or protuberance, to damage packing ring, therefore, traditional magnet support portion 22 is all made by compressing and forming process by metal dust or brass powder.But, use metal dust, when particularly using brass powder to make magnet support portion 22, not only complicate fabrication process, Heavy Weight also can reduce pull-in torque (Pull-in-torque) characteristic of stepping motor.
Summary of the invention
The present invention proposes for addressing the above problem, its objective is that providing a kind of makes the magnet support portion by compressing and forming process, thereby when the medium pore of magnet support portion is bored a hole, burr or protuberance can not appear, select general standard iron plate material, thereby simplify manufacturing process, weight reduction, improve the rotor support device of the stepping motor of pull-in torque characteristic.
The rotor support device of the stepping motor that the present invention relates to, be characterized in, for being pressed into by the axle of bearings and at axle the stepping motor of magnet support portion so that magnet is supported is set, described magnet support portion is made by compression process technique by an iron plate, in the compression process process, need to be formed for being pressed into the medium pore of axle, form before the medium pore, to form diameter greater than the groove of the diameter of medium pore in upper surface or the lower surface compression of the position that forms medium pore, then, never form the described lower surface of groove or the direction perforation of upper surface synform grooving, form medium pore.
When compression forms above-mentioned groove, diameter be less than the magnet support portion diameter 1/2, the degree of depth be less than the magnet support portion thickness 1/2.
The rotor support device of the stepping motor that the present invention relates to, use an iron plate to make magnet support portion 70 by compression process technique, before forming medium pore 74, upper surface or lower surface compression in the position that forms medium pore form diameter greater than the groove 72 of the diameter of medium pore 74, make burr that when perforation occur etc. be positioned at groove 72 around, guarantee that burr etc. can not expose outside groove 72, thereby can not damage packing ring 30,32, made by compression process technique by iron plate owing to magnet support portion 70 again, thereby can save manufacturing cost, weight reduction, improve the pull-in torque characteristic.
Description of drawings
Fig. 1 is the generalized section of traditional stepping motor;
Fig. 2 is the generalized section of traditional rotor;
Fig. 3 is the generalized section of stepping motor of the present invention;
Fig. 4 is the generalized section of rotor of the present invention;
Fig. 5 is the generalized section of magnet of the present invention support portion.
Reference numeral
Figure GDA00001796544000021
Embodiment
Below with reference to Fig. 3 to Fig. 5 preferred implementation of the present invention is elaborated.
Stepping motor of the present invention is applicable to stepping motor shown in Figure 1, and identical building block uses same reference numerals to carry out mark.
Stepping motor comprises: cabinet 10; The upper flange 12 that is connected with the top of cabinet 10; The lower flange 13 that is connected with cabinet 10 bottoms; By the axle 14 of upper flange 12 and lower flange 13 supports; Be arranged on the outer surface of axle 14 and the bearing 16 between the upper flange 12; Be positioned at the magnet 20 of external member 26 1 sides; Be arranged on the magnet support portion 70 that is used for supporting magnet 20 on the axle 14.
The upside of magnet support portion 70 and downside are provided with plastics or packing ring made of iron 30,32, and to guarantee smoothly rotation, the below of downside packing ring 32 also is provided with elastic washer 34.
Magnet support portion 70 needs to form medium pore, in order to be installed on the axle 14, when medium pore is bored a hole, if there is burr or protuberance, will damage packing ring, and therefore, magnet of the present invention support portion 70 is made by compression process technique by an iron plate.
In the compression process process, need to be formed for being pressed into the medium pore 74 of axle 14, form before the medium pore 74, form diameter greater than the groove 72 of the diameter of medium pore 74 in upper surface or the lower surface compression of the position that forms medium pore.
Then, never form the described lower surface of groove 72 or the direction perforation of upper surface synform grooving 72, to form medium pore 74.
Like this, the burr that occurs during perforation etc. will be positioned at groove 72 around, burrs etc. can not expose outside groove 72, thereby can not damage packing ring 30,32.
When compression forms described groove 72, diameter be less than magnet support portion 70 diameter 1/2, the degree of depth be less than magnet support portion 70 thickness 1/2.
Above-mentioned explanation only is an execution mode of the rotor support device of the stepping motor that the present invention relates to, the present invention is not limited thereto, in the scope that does not break away from the described main idea of the present invention of claims, domain background is known the knowledgeable under having the present invention, can carry out numerous variations, these all should belong to claim scope of the present invention.

Claims (2)

1. the rotor support device of a stepping motor, it is characterized in that, for being pressed into by the axle of bearings and at axle the stepping motor of magnet support portion so that magnet is supported is set, described magnet support portion is made by compression process technique by an iron plate, in the compression process process, need to be formed for being pressed into the medium pore of axle, before forming medium pore, upper surface or lower surface compression in the position that forms medium pore form diameter greater than the groove of the diameter of medium pore, then, never form the described lower surface of groove or the direction perforation of upper surface synform grooving, form medium pore.
2. the rotor support device of stepping motor according to claim 1 is characterized in that, when compression formed described groove, the diameter of described groove was less than 1/2 of magnet support portion diameter, and the degree of depth of described groove is less than 1/2 of the thickness of magnet support portion.
CN2010100006476A 2009-01-23 2010-01-13 Rotor support device of a step motor Active CN101789674B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2020090000857U KR200449720Y1 (en) 2009-01-23 2009-01-23 Rotator supporting apparatus for step motor
KR20-2009-0000857 2009-01-23

Publications (2)

Publication Number Publication Date
CN101789674A CN101789674A (en) 2010-07-28
CN101789674B true CN101789674B (en) 2013-03-20

Family

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Application Number Title Priority Date Filing Date
CN2010100006476A Active CN101789674B (en) 2009-01-23 2010-01-13 Rotor support device of a step motor

Country Status (3)

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JP (1) JP5166457B2 (en)
KR (1) KR200449720Y1 (en)
CN (1) CN101789674B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102636844B1 (en) * 2016-06-09 2024-02-19 엘지이노텍 주식회사 Rotor assembly, motor and actuator having the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1835355A (en) * 2005-03-14 2006-09-20 日本电产三协株式会社 Electromotor
CN101099287A (en) * 2005-01-13 2008-01-02 三菱综合材料C.M.I.株式会社 Stepping motor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61189832A (en) * 1985-02-18 1986-08-23 Hitachi Ltd Upper and lower blanking metal die
JPS62118752A (en) * 1985-11-19 1987-05-30 Matsushita Electric Ind Co Ltd Stepping motor
JPH0846321A (en) * 1994-07-28 1996-02-16 Yazaki Corp Perforation processing of printed board and method of mounting component
JP4004075B2 (en) * 1995-03-20 2007-11-07 富士通株式会社 Printed wiring board
JPH1131455A (en) * 1997-07-11 1999-02-02 Sony Corp Press working method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101099287A (en) * 2005-01-13 2008-01-02 三菱综合材料C.M.I.株式会社 Stepping motor
CN1835355A (en) * 2005-03-14 2006-09-20 日本电产三协株式会社 Electromotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP平8-264940A 1996.10.11

Also Published As

Publication number Publication date
KR20100007767U (en) 2010-08-02
JP5166457B2 (en) 2013-03-21
CN101789674A (en) 2010-07-28
KR200449720Y1 (en) 2010-08-03
JP2010172188A (en) 2010-08-05

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