WO2006123582A1 - 回転電機におけるヨークおよびその製造方法 - Google Patents
回転電機におけるヨークおよびその製造方法 Download PDFInfo
- Publication number
- WO2006123582A1 WO2006123582A1 PCT/JP2006/309564 JP2006309564W WO2006123582A1 WO 2006123582 A1 WO2006123582 A1 WO 2006123582A1 JP 2006309564 W JP2006309564 W JP 2006309564W WO 2006123582 A1 WO2006123582 A1 WO 2006123582A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- yoke
- bearing support
- bearing
- support portion
- burring
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/067—Fixing them in a housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/042—Housings for rolling element bearings for rotary movement
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
- Y10T29/49012—Rotor
Definitions
- the present invention belongs to the technical field of a yoke in a rotary electric machine such as an electric motor constituting an actuator mounted on a vehicle or the like and a method for manufacturing the same.
- a motor shaft corresponding to a rotating shaft may be supported in a state of penetrating the bottom surface of the yoke.
- a through hole is formed, and a cylindrical bearing support portion for housing the bearing is formed in the through hole forming portion.
- claw portions are formed at a plurality of locations in the circumferential direction at the cylindrical tip portion of the bearing support portion formed following the through-hole formed in the bottom surface of the yoke. It has been proposed to support the removal of parts.
- Patent Document 1 JP-A-8-149742
- the bearing support portion is formed on the bottom surface of the yoke, and the rotary shaft is supported in a penetrating manner via a bearing that is confiscated in the bearing support portion.
- An annular flange portion that is inclined toward the inner diameter side is formed integrally with the cylindrical tip portion of the portion so as to prevent the bearing from coming off toward the end side.
- the bearing support portion is formed by burring the hole edge of the through hole formed in the bottom surface of the yoke using a burring punch, and the flange portion is In the burring process, the tip end portion of the bearing support portion forming portion of the burring punch is formed closer to the base end side than the tube tip portion of the bearing support portion.
- the invention of claim 3 is that according to claim 1 or 2, wherein the other end of the bearing is prevented from coming off by abutment of a stepped portion formed on the rotating shaft.
- the invention of claim 4 is the invention according to any one of claims 1 and 2, wherein the other end of the bearing is prevented from coming off by abutting a shield ring attached to the bottom surface of the yoke.
- a through hole is formed in the bottom surface of the yoke, and the hole edge of the through hole is subjected to burring processing using a burring punch to form a cylindrical bearing support portion.
- the cylindrical tip portion of the bearing support portion is positioned closer to the base end side than the cylindrical tip portion of the bearing support portion, and an annular flange portion inclined toward the inner diameter side is formed at the cylindrical tip portion of the bearing support portion. It is characterized by that.
- the bearing can be reliably prevented from coming off, and a highly reliable yoke can be obtained.
- the flange portion can be integrally formed when the bearing support portion is subjected to burring processing, and the yoke 7 having the bearing support portion having high roundness can be provided. This reduces the number of work processes required to improve productivity and contributes to cost reduction.
- a yoke provided with a highly round bearing support portion can be provided. This reduces the number of work processes and increases productivity and contributes to cost reduction.
- FIG. 1 is a partial sectional side view of an electric motor.
- FIGS. 2A and 2B are a front view and a partial cross-sectional side view of a yoke, respectively.
- FIG. 3 is a partial cross-sectional side view of a state in which a bearing is incorporated in a yoke.
- FIGS. 4A and 4B are an enlarged sectional view of the main part of the yoke and an enlarged sectional view of the main part in a state where the bearing and the motor shaft are inserted into the yoke.
- FIG. 5 is a partial cross-sectional side view of an electric motor according to a second embodiment.
- FIG. 6 is a partial cross-sectional side view of the second embodiment with the bearing inserted into the yoke.
- FIGS. 7 (A) and 7 (B) are enlarged sectional views of the main part of the yoke in the second embodiment, respectively, and an enlarged sectional view of the main part with the bearing and the motor shaft inserted into the yoke. is there.
- reference numeral 1 denotes an electric motor (rotary electric machine) that functions as a fan motor, and one end of a motor shaft la of the electric motor 1 is, as will be described later, a bottom 2a of a bottomed cylindrical yoke 2 Is supported by the yoke 2 via a bearing 3 fitted in a bearing support portion 2b formed at the end, and one end of the motor shaft la supported by the bearing is arranged to project outward from the yoke bottom portion 2a. ing. Further, the other end of the motor shaft la is supported by an end bracket 4 that covers the opening end of the yoke 2 via a bearing 4a.
- a fan (not shown) is integrally provided at a protruding tip (one end) protruding outward from the yoke bottom 2a of the motor shaft la so that the fan rotates integrally with the rotation of the motor shaft la! Is set to!
- a commutator 5 is externally fitted to the motor shaft la on the end bracket 4 side, and a plurality of iron cores 6 are externally fitted to the motor shaft la on the yoke bottom 2a side from the commutator 5.
- the rotor 7 is configured by installing a plurality of coils 6a around the outer periphery of the iron core 6.
- an abutting portion 2c is formed at the opening end of the yoke 2 so as to expand to the outer diameter side, and the abutting portion 2c is formed at the outer diameter edge portion of the end bracket 4. It is comprised so that the contact part 4b may be abutted. Then, the outer diameter edge portion 8a of the flat plate ring-shaped brush holder stage 8 is provided in a positioning manner at a portion where the abutting portions 2c and 4b are abutted with each other.
- the brush holder stage 8 is provided with brush holders 8a at four locations in the circumferential direction.
- the brush holders 8a accommodate brushes 8b whose tips are in sliding contact with the outer peripheral surface of the commutator 5, respectively.
- Each of these brushes 8b is connected to an external power source via a big tail (not shown), and thereby, the external power source is configured to be supplied to the commutator 5 via the pigtail and the brush 8b. ! RU
- Each coil 6a constituting the rotor 7 is electrically connected to the commutator 5, and the external power is supplied via the big tail 8c, the brush 8b, and the commutator 5 to energize the coils 6a.
- the rotor 7 is set to rotate with respect to the magnetic field formed by the permanent magnet 9 fixed to the inner peripheral surface of the yoke 2, and the basic configuration thereof is the same as before. Yes.
- the electric motor 1 is configured so that the motor shaft 1 is mounted in a state where the motor shaft 1 faces in the left-right direction and the end bracket 4 stands up.
- the yoke bottom 2a has a concave portion 2d formed by being recessed toward the inside of the cylinder in an annular shape, and a side piece on the inner diameter side constituting the concave portion 2d is a bearing support portion. Set to configure 2b.
- the bearing support portion 2b is formed so that the cylinder tip portion faces the yoke bottom portion 2a side (motor shaft la-end side), and the bearing 3 is fitted therein, but the bearing support portion
- An annular (ring) -shaped flange portion 2e that is inclined toward the inner diameter side is formed at the cylindrical tip portion of 2b, and the flange portion 2e restricts the bearing 3 from coming out to the end side. It is set so as to prevent it from coming off.
- the retaining to the other end of the bearing 3 fitted to the bearing support portion 2b is prevented from coming off at the other end of the bearing 3 by a large diameter portion lb and one end formed on the outer periphery of the motor shaft la. It is set by striking the stepped part lc formed between the two parts.
- the flange portion 2e at the front end of the cylinder of the bearing support portion 2b is formed as follows.
- the yoke bottom 2a is formed with a step 2f on the inner diameter side piece of the ring-shaped recess 2d, and on the inner diameter side of the step 2f, as shown by a one-dot chain line in FIG.
- the groove bottom piece F constituting the recess 2d is formed in a pre-formed state.
- the groove bottom piece F has a through hole 2g formed in the center, and the groove bottom piece F portion where the through hole 2g is formed is used to form the side piece on the inner diameter side of the recess 2d, that is, the bearing support portion 2b. It is set in the part of.
- the cylindrical tip surface 10a of the cylindrical burring punch 10 is abutted against the groove bottom piece F corresponding to the hole edge of the through hole 2g from the inside of the yoke 2, and this state force is also pushed toward the yoke bottom 2a side.
- the groove bottom piece F is set to be burring formed on the bearing support 2b.
- the outer diameter of the burring punch 10 is a force formed so as to be the same as the inner diameter of the bearing support portion 2b.
- the cylindrical tip surface 10a of the burring punch 10 of the present embodiment has a chamfered portion on the outer periphery. 10b is formed, and the outer diameter of the cylinder front end surface 10a is set to be smaller than the inner diameter of the bearing support portion 2.
- the pushing operation of the burring punch 10 is performed by the chamfered portion 10b proximal end portion of the burring punch 10, that is, the outer diameter is the same as the inner diameter of the bearing support portion 2b.
- the part P that is the most distal side of the part that becomes is from the cylindrical tip of the bearing support 2b
- the cylindrical distal end portion of the bearing support portion 2b is formed into a ring shape inclined toward the inner diameter side, and this portion becomes the flange portion 2e of the present invention. It is configured to perform the function of retaining the bearing 3.
- 2h is a plurality of ventilation holes formed in the yoke bottom 2a
- 11 is a bracket for mounting the electric motor 1
- the bracket 11 has an outer diameter from a cylindrical main body part fitted on the outer periphery of the yoke 2.
- a plurality of mounting pieces 11a are formed in the direction.
- 12 is a shield ring that is fitted in the recess 2d of the yoke bottom 2a and waterproofs the yoke 2 including the motor shaft la.
- the electric motor 1 is a force that rotates the rotor 7 integrated with the motor shaft la by the supply of external power. At this time, one end of the motor shaft la rotates.
- the bearing 3 that freely supports the bearing is housed in a bearing support 2b formed on the yoke bottom 2a, and a ring-shaped flange portion 2e that is inclined toward the inner diameter side is formed at the cylindrical end of the bearing support 2b. Since it is formed, the flange portion 2e prevents the bearing 3 from coming off to one end side, so that the bearing 3 can be reliably prevented from coming out of the yoke 2.
- the flange portion 2e does not process the burring punch 10 until it penetrates the bearing support portion 2b when the bearing support portion 2b is formed by burring.
- the burring punch 10 is formed by opening an end portion P of the burring punch 10 to a position closer to the base end side than the cylinder front end of the bearing support portion 2b.
- the number of work steps is not increased and complicated as in the case of forming a conventional bearing support portion and then separately forming a bearing retaining member. If it is easy to ensure the roundness of the support part 2b, the roundness of the bearing support part 2b can be ensured with high precision with sufficient force, and an inexpensive and highly reliable yoke 2 can be produced with high productivity. Can be formed.
- the stepped portion lc of the motor shaft la is abutted against the other end surface of the bearing 3, so that the bearing 3 has a flange portion on one end side. 2e is prevented, and the other end side is prevented by the motor shaft step portion lc, so that it can be reliably prevented from falling off the yoke 2 for further reliability. Improvement can be achieved. Moreover, in this case, it is necessary to separately provide a member for preventing the bearing 3 from coming off. Therefore, the number of parts can be reduced and further cost reduction can be expected.
- the basic configuration of the second embodiment is the same as that of the above-described embodiment except that the shape of the yoke 13 is different, and the same reference numerals as those of the first embodiment are used.
- the yoke 13 according to the second embodiment is formed in a ring shape with a shallow groove-like recess 13b for fitting the shield ring 14 in the bottom 13a, which is recessed inside the yoke cylinder.
- a bearing support portion 13e is formed by burring the groove bottom piece 13d (a hole edge of the through hole 13c) provided with the 3b through hole 13c toward the inside of the yoke 13.
- the bearing support portion 13e of the present embodiment is formed such that the cylinder tip is positioned on the other end side of the motor shaft 1, and a ring-shaped flange portion 13f that is inclined toward the inner diameter side is formed. Has been.
- the bearing 14 accommodated in the bearing support portion 13e is set so that the flange portion 13f prevents the other end side from coming off.
- the retaining at one end side of the bearing 14 is set so that the bottom surface 15a of the shield ring 15 provided in the concave portion 13b of the yoke bottom portion 13a is abutted.
- the flange portion 13f of the second embodiment is configured so that the burring punch 10 is pushed out when the groove bottom piece 13d of the yoke bottom portion 13a is barred using the burring punch 10, and the outer diameter of the burring punch 10 is a bearing.
- the bearing support portion 13e is finished.
- the cylinder tip portion of 13e is formed so as to be inclined toward the inner diameter side, and this portion is the flange portion 13f of the present invention.
- the retaining of the other end side of the bearing 14 is prevented by the stepped portion lc of the motor shaft la together with the flange portion 13f of the bearing supporting portion 13e.
- the flange portion 13f can be formed at the same time as the bearing support portion 13e at the stage of forming the bearing support portion 13e by burring force, so that the number of work processes can be reduced. Cost reduction and high roundness of the bearing support 13e. It is possible to make an electric motor with high reliability!
- the present invention is useful as a yoke in a rotating electrical machine such as an electric motor and a manufacturing method thereof, and a flange portion is formed at the tip in the step of forming a cylindrical bearing support portion that supports a motor shaft on the bottom surface of the yoke. Therefore, the work that does not require the cutting process and the bending process can be simplified, the cost can be reduced, and a bearing support portion having high roundness can be formed.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/920,431 US20090085424A1 (en) | 2005-05-16 | 2006-05-12 | Yoke of Rotating Electric Machine and Method of Manufacturing the Same |
JP2007516265A JP4815437B2 (ja) | 2005-05-16 | 2006-05-12 | 回転電機におけるヨークの製造方法 |
US12/659,621 US8555484B2 (en) | 2005-05-16 | 2010-03-15 | Method of manufacturing a yoke of a rotating electric machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005142148 | 2005-05-16 | ||
JP2005-142148 | 2005-05-16 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/920,431 A-371-Of-International US20090085424A1 (en) | 2005-05-16 | 2006-05-12 | Yoke of Rotating Electric Machine and Method of Manufacturing the Same |
US12/659,621 Division US8555484B2 (en) | 2005-05-16 | 2010-03-15 | Method of manufacturing a yoke of a rotating electric machine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006123582A1 true WO2006123582A1 (ja) | 2006-11-23 |
Family
ID=37431158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/309564 WO2006123582A1 (ja) | 2005-05-16 | 2006-05-12 | 回転電機におけるヨークおよびその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (2) | US20090085424A1 (ja) |
JP (1) | JP4815437B2 (ja) |
CN (1) | CN101167233A (ja) |
WO (1) | WO2006123582A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012101819A1 (de) * | 2012-03-05 | 2013-09-05 | MultiElectric GmbH & Co. KG | Kleinmotor und Lageranordnung |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02202332A (ja) * | 1989-01-30 | 1990-08-10 | Matsushita Electric Ind Co Ltd | 玉軸受け固定装置 |
JP2003032956A (ja) * | 2001-07-19 | 2003-01-31 | Matsushita Electric Works Ltd | モータ |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3004182B2 (ja) | 1994-11-17 | 2000-01-31 | アスモ株式会社 | モータの軸受装置 |
FR2743209B1 (fr) * | 1995-12-27 | 1998-03-27 | Valeo Systemes Dessuyage | Moteur a aimants permanents avec agrafes de blocage |
JPH10336978A (ja) * | 1997-05-30 | 1998-12-18 | Asmo Co Ltd | モータ製造方法及びモータ |
DE60023782T2 (de) * | 1999-03-30 | 2006-07-20 | Mabuchi Motor Co., Ltd., Matsudo | Kleinstmotor und sein Herstellungsverfahren |
JP2001320849A (ja) * | 2000-02-29 | 2001-11-16 | Asmo Co Ltd | モータ |
JP3706301B2 (ja) * | 2000-10-31 | 2005-10-12 | マブチモーター株式会社 | 小型モータ |
JP2003244887A (ja) * | 2002-02-19 | 2003-08-29 | Mabuchi Motor Co Ltd | 小型モータ及びその製造方法 |
-
2006
- 2006-05-12 CN CNA200680014429XA patent/CN101167233A/zh active Pending
- 2006-05-12 JP JP2007516265A patent/JP4815437B2/ja not_active Expired - Fee Related
- 2006-05-12 US US11/920,431 patent/US20090085424A1/en not_active Abandoned
- 2006-05-12 WO PCT/JP2006/309564 patent/WO2006123582A1/ja active Application Filing
-
2010
- 2010-03-15 US US12/659,621 patent/US8555484B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02202332A (ja) * | 1989-01-30 | 1990-08-10 | Matsushita Electric Ind Co Ltd | 玉軸受け固定装置 |
JP2003032956A (ja) * | 2001-07-19 | 2003-01-31 | Matsushita Electric Works Ltd | モータ |
Also Published As
Publication number | Publication date |
---|---|
JPWO2006123582A1 (ja) | 2008-12-25 |
US20100186218A1 (en) | 2010-07-29 |
JP4815437B2 (ja) | 2011-11-16 |
US8555484B2 (en) | 2013-10-15 |
CN101167233A (zh) | 2008-04-23 |
US20090085424A1 (en) | 2009-04-02 |
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