AU2013100695A4 - Double Snap ring Positioning Structure for Motor Shaft of Worm Geared Motor - Google Patents
Double Snap ring Positioning Structure for Motor Shaft of Worm Geared Motor Download PDFInfo
- Publication number
- AU2013100695A4 AU2013100695A4 AU2013100695A AU2013100695A AU2013100695A4 AU 2013100695 A4 AU2013100695 A4 AU 2013100695A4 AU 2013100695 A AU2013100695 A AU 2013100695A AU 2013100695 A AU2013100695 A AU 2013100695A AU 2013100695 A4 AU2013100695 A4 AU 2013100695A4
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- AU
- Australia
- Prior art keywords
- motor shaft
- end cover
- motor
- bearing
- shaft
- 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.)
- Ceased
Links
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Title: Double Snap ring Positioning Structure for Motor Shaft of Worm Geared Motor Abstract The invention relates to a double snap ring positioning structure for a motor shaft of a worm geared motor, comprising a casing, a front end cover, a rear end cover, a motor shaft and a rotor arranged on the motor shaft. The motor shaft is rotatably supported on the front end cover and the rear end cover through a front bearing and a rear bearing, an output end of the motor shaft is provided with a worm geared reduction mechanism, and the other end of the motor shaft is provided with an electromagnetic brake and a coder. An inner ring of the front bearing is fixed with the motor shaft through shaft snap rings respectively arranged on two ends of the inner ring, and an outer ring of the front bearing is fixed with the front end cover through a screw. 109 1 4 11 2 12 8 10 9 4 11 2 12 In//
Description
Description Double Snap ring Positioning Structure for Motor Shaft of Worm Geared Motor Technical Field The invention relates to a double snap ring positioning structure for a motor shaft of a worm geared motor. Background of the Invention A motor with a worm geared reduction mechanism (CN 200410074746.3) was disclosed, having a motor and a worm geared reduction mechanism. An armature shaft of the motor is in coaxial transmission connection with a worm of the worm geared reduction mechanism. An outer end of the armature shaft and an outer end of the worm, which are on a same axis, are provided with supporting bearings, respectively. A diameter of the worm is 1.5 to 6 times of that of the armature shaft. An end of the worm approaching to the armature shaft is provided with a supporting bearing. The motor with the above structure has the problems as follows: during operation, as the acting force of the worm geared reduction mechanism to the motor shaft is large, axial movement is likely to occur between the motor shaft and an end cover, thereby affecting the performance of the motor, and even damaging the motor. Summary of the Invention The purpose of the invention is to provide a double snap ring positioning structure for a motor shaft of a worm geared motor, with reliable positioning between a motor shaft and an end cover and stable running performance of the motor. The above technical purpose of the invention is mainly solved by the technical solution as follows. A double snap ring positioning structure for a 1 motor shaft of a worm geared motor is provided, comprising a casing, a front end cover, a rear end cover, a motor shaft and a rotor arranged on the motor shaft. The motor shaft is rotatably supported on the front end cover and the rear end cover through a front bearing and a rear bearing. An output end of the motor shaft is provided with a worm geared reduction mechanism, and the other end of the motor shaft is provided with an electromagnetic brake and a coder. An inner ring of the front bearing is fixed with the motor shaft through shaft snap rings respectively arranged on two ends of the inner ring, and an outer ring of the front bearing is fixed with the front end cover through a screw. As the inner ring of the front bearing is fixed with the motor shaft through the shaft snap rings respectively arranged on the two ends of the inner ring, and the outer ring of the front bearing is fixed with the front end cover through the screw, the axial movement of the motor is limited within a small movement range defined by the inner and outer rings of the front bearing, the normal operating of both the electromagnetic brake and the coder is guaranteed, so that the performance of the motor is stable, and the rate of the motor to be damaged due to the axial movement of the motor shaft is reduced. Wherein, the outer ring of the front bearing and the front end cover may be in direct contact and fixed with an end face of the outer ring of the front bearing through an inner end face of a head part of the screw; or, a washer or a gasket may be additionally provided between the head part of the screw and the front end cover to come into contact with the end face of the outer ring of the front bearing, for the purpose of realizing axial fixation between the front bearing and the front end cover. Preferably, a stepped hole fitted with the outer ring of the front bearing is provided on the front end cover, the screw is a pan head screw, a threaded section of the pan head screw is in threaded connection with the front end cover, and an inner end face of the pan head of the pan head screw comes into contact with the end face of the outer ring of the bearing. Therefore, the invention is characterized by reliable positioning between 2 the motor shaft and the end cover and stable running performance of the motor. Brief Description of the Drawings Fig. 1 is a structure diagram of the invention; and, Fig. 2 is a view of Fig. 1 along line A-A. Detailed Description of the Invention The technical solutions of the invention will be further described in details as below by specific embodiments with reference to drawings. Embodiment 1 As shown in Fig. 1 and Fig. 2, a motor comprises a casing 1, a front end cover 2, a rear end cover 3, a motor shaft 4 and a rotor 5 arranged on the motor shaft 4. The motor shaft 4 is rotatably supported on the front end cover 2 and the rear end cover 3 through a front bearing 6 and a rear bearing 7. An output end of the motor shaft 4 is provided with a worm geared reduction mechanism 8, and the other end of the motor shaft 4 is provided with an electromagnetic brake 9 and a coder 10. A stepped hole 13 fitted with the outer ring of the front bearing 6 is provided on the front end cover 2. An inner ring of the front bearing 6 is fixed with the motor shaft 4 through a shaft snap ring 11 and a shaft snap ring 12 respectively arranged on two ends of the inner ring. A threaded section of a pan head screw 14 is in threaded connection with the front end cover 2. A bottom of the stepped hole comes into contact with an end face of the outer ring of the front bearing, thereby realizing unidirectional positioning in an axial direction between the outer ring of the front bearing and the front end cover. An inner end face of the pan head of the pan head screw 14 comes into contact with an end face of the outer ring of the bearing, and the outer ring of the front bearing is positioned in another direction so as to fix the outer ring of the front bearing 6 with the front end cover 2. 3
Claims (2)
1. A double snap ring positioning structure for a motor shaft of a worm geared motor, comprising a casing, a front end cover, a rear end cover, a motor shaft and a rotor arranged on the motor shaft, the motor shaft being rotatably supported on the front end cover and the rear end cover through a front bearing and a rear bearing, an output end of the motor shaft being provided with a worm geared reduction mechanism, the other end of the motor shaft being provided with an electromagnetic brake and a coder, characterized in that an inner ring of the front bearing is fixed with the motor shaft through shaft snap rings respectively arranged on two ends of the inner ring, and an outer ring of the front bearing is fixed with the front end cover through a screw.
2. The double snap ring positioning structure for a motor shaft of a worm geared motor according to claim 1, characterized in that a stepped hole fitted with the outer ring of the front bearing is provided on the front end cover, the screw is a pan head screw, a threaded section of the pan head screw is in threaded connection with the front end cover, and an inner end face of the pan head of the pan head screw comes into contact with the end face of the outer ring of the bearing. 4
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2013100695A AU2013100695A4 (en) | 2013-05-21 | 2013-05-21 | Double Snap ring Positioning Structure for Motor Shaft of Worm Geared Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2013100695A AU2013100695A4 (en) | 2013-05-21 | 2013-05-21 | Double Snap ring Positioning Structure for Motor Shaft of Worm Geared Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2013100695A4 true AU2013100695A4 (en) | 2013-06-27 |
Family
ID=48670273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2013100695A Ceased AU2013100695A4 (en) | 2013-05-21 | 2013-05-21 | Double Snap ring Positioning Structure for Motor Shaft of Worm Geared Motor |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2013100695A4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752740A (en) * | 2013-12-30 | 2014-04-30 | 中铁隆昌铁路器材有限公司 | stepless adjusting device and method for tri-roller milling machine main transmission shaft angle |
| CN106411042A (en) * | 2016-12-01 | 2017-02-15 | 无锡市创恒机械有限公司 | Worm-gear anti-reverse mechanism |
-
2013
- 2013-05-21 AU AU2013100695A patent/AU2013100695A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752740A (en) * | 2013-12-30 | 2014-04-30 | 中铁隆昌铁路器材有限公司 | stepless adjusting device and method for tri-roller milling machine main transmission shaft angle |
| CN106411042A (en) * | 2016-12-01 | 2017-02-15 | 无锡市创恒机械有限公司 | Worm-gear anti-reverse mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |