CN209881505U - Axial elastic displacement hollow cup rotor with double pre-tightening forces - Google Patents
Axial elastic displacement hollow cup rotor with double pre-tightening forces Download PDFInfo
- Publication number
- CN209881505U CN209881505U CN201921087181.0U CN201921087181U CN209881505U CN 209881505 U CN209881505 U CN 209881505U CN 201921087181 U CN201921087181 U CN 201921087181U CN 209881505 U CN209881505 U CN 209881505U
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- cup
- armature
- steel spring
- ball bearing
- 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 - Fee Related
Links
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
The utility model provides a hollow cup rotor with two pretightning forces axial elastic displacement, the utility model relates to a motor processing technology field, ball bearing has been cup jointed to the equal interference in both ends around the armature cup axle, and the epaxial cover of armature cup that wherein is located the ball bearing front end of front end is equipped with a stainless steel shell fragment, and the epaxial cover of armature cup that is located a stainless steel shell fragment front end is equipped with stainless steel spring, and the epaxial cover of armature cup that is located stainless steel spring front end is equipped with No. two stainless steel shell fragments, and the epaxial cover of armature cup that is located No. two stainless steel shell fragments front ends is fixed with the check ring. Due to the adoption of the double-ball bearing structure, the efficiency of the motor is improved, and the no-load current is reduced; because the stainless steel compression spring is used, the two ball bearings are simultaneously subjected to pre-pressure, and the problem of axial movement of the armature cup of the hollow cup is solved. Finally, the purposes of reducing noise and reducing no-load current are achieved.
Description
Technical Field
The utility model relates to a motor processing technology field, concretely relates to have two pretightning force axial elastic displacement coreless rotor.
Background
The permanent magnet coreless motor has the characteristics of outstanding energy conservation, sensitivity, convenient control and stable operation. As a control motor, the requirements on vibration and noise of the motor are high. Due to the occurrence of noise and vibration, the performance and reliability of the product are unstable, and the product is repaired and returned in large batch.
For low power coreless motors, the typical bearing type is plain bearing plus ball bearing. As the service time is prolonged, the clearance is enlarged after the sliding bearing is worn, and the noise is increased along with the clearance. Meanwhile, the sliding bearing has low efficiency and large no-load current due to sliding friction.
After the double ball bearings are used, due to the position limitation of a small motor, a wave washer is difficult to place to apply pretightening force to the bearings. Because the bearing play is not eliminated, the noise exceeds the use requirement.
The axial play of the hollow cup armature is also an important aspect of excessive noise, and meanwhile, due to structural limitation, the conventional wave washer placing position has no space, is difficult to realize, and needs to be improved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a reasonable-designed hollow cup rotor with double pre-tightening force axial elastic displacement, aiming at the defects and shortcomings of the prior art, and because of using a double-ball bearing structure, the efficiency of the motor is improved, and the no-load current is reduced; because the stainless steel compression spring is used, the two ball bearings are simultaneously subjected to pre-pressure, and the problem of axial movement of the armature cup of the hollow cup is solved. Finally, the purposes of reducing noise and reducing no-load current are achieved.
In order to achieve the above purpose, the utility model adopts the following technical proposal: the armature comprises an armature cup shaft, a ball bearing, a first stainless steel elastic sheet, a stainless steel spring, a second stainless steel elastic sheet and a locking ring; ball bearings are sleeved at the front end and the rear end of the armature cup shaft in an interference manner, and the outer ring end faces on the opposite surfaces of the ball bearings at the front end and the rear end are arranged on the side surfaces of the bearing mounting grooves of the motor shell in a butting manner; the ball bearing comprises a ball bearing, an armature cup shaft, a stainless steel spring piece, a locking ring and a spring, wherein the armature cup shaft at the front end of the ball bearing at the front end is sleeved with the stainless steel spring piece, the armature cup shaft at the front end of the stainless steel spring piece is sleeved with the stainless steel spring piece II, and the armature cup shaft at the front end of the stainless steel spring piece II is sleeved and fixed with the locking ring.
Furthermore, the front end and the rear end of the stainless steel spring are respectively abutted against the side surfaces of the first stainless steel elastic sheet and the second stainless steel elastic sheet.
Furthermore, the pre-pressure of the stainless steel spring is 40-50 g.
Furthermore, the armature cup shaft and the locking ring are welded and fixed into a rigid body structure.
After the structure is adopted, the beneficial effects of the utility model are that: the utility model provides a hollow cup rotor with double pre-tightening force axial elastic displacement, which improves the efficiency of the motor and reduces the no-load current due to the use of a double-ball bearing structure; because the stainless steel compression spring is used, the two ball bearings are simultaneously subjected to pre-pressure, and the problem of axial movement of the armature cup of the hollow cup is solved. Finally, the purposes of reducing noise and reducing no-load current are achieved.
Description of the drawings:
fig. 1 is a schematic diagram of the position inside the motor housing according to the present invention.
Fig. 2 is an enlarged view of a portion a of fig. 1.
Description of reference numerals:
the armature cup comprises an armature cup shaft 1, a ball bearing 2, a first stainless steel elastic sheet 3, a stainless steel spring 4, a second stainless steel elastic sheet 5 and a locking ring 6.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and fig. 2, the following technical solutions are adopted in the present embodiment: the specific embodiment is suitable for a phi 22mm permanent magnet DC coreless motor; the armature comprises an armature cup shaft 1, a ball bearing 2, a first stainless steel elastic sheet 3, a stainless steel spring 4, a second stainless steel elastic sheet 5 and a locking ring 6; the front end and the rear end of the armature cup shaft 1 are respectively sleeved with a ball bearing 2 in an interference fit manner, the right outer ring end face of the ball bearing 2 positioned at the rear end is arranged on the left side face of the bearing installation groove of the motor shell in an abutting manner, and the left outer ring end face of the ball bearing 2 positioned at the front end is arranged on the right side face of the bearing installation groove of the motor shell in an abutting manner; the armature cup shaft 1 positioned at the front end of the ball bearing 2 at the front end is sleeved with a first stainless steel elastic sheet 3, the armature cup shaft 1 positioned at the front end of the first stainless steel elastic sheet 3 is sleeved with a stainless steel spring 4, the armature cup shaft 1 positioned at the front end of the stainless steel spring 4 is sleeved with a second stainless steel elastic sheet 5, and the armature cup shaft 1 positioned at the front end of the second stainless steel elastic sheet 5 is sleeved and welded with a locking ring 6; the armature cup shaft 1 and the locking ring 6 form a rigid body structure.
Furthermore, the front end and the rear end of the stainless steel spring 4 are respectively abutted to the side surfaces of the first stainless steel spring piece 3 and the second stainless steel spring piece 5.
Furthermore, the pre-pressure of the stainless steel spring 4 is 40-50 g.
The processing flow of the embodiment is as follows:
1. sleeving a stainless steel spring 4 on the armature cup shaft 1, and simultaneously placing a first stainless steel spring plate 3;
2. inserting the armature cup shaft 1 into a bearing hole of a ball bearing at the front end;
3. a second stainless steel spring plate 5 is sleeved at the front end of the armature cup shaft 1 and positioned at the front end of the stainless steel spring 4;
4. the prepressing force is applied to the stainless steel spring 4 to enable the stainless steel spring 4 to be tightly pressed on the end face of the inner ring of the ball bearing 2 positioned at the front end, the prepressing force of the stainless steel spring 4 is about 45 grams, and because the two ball bearings 2 at the front end and the rear end are arranged on the groove surface of the bearing mounting groove in the motor shell in a butting mode, when the stainless steel spring 4 is applied with force, the two ball bearings 2 at the front end and the rear end are simultaneously subjected to the prepressing force, and the phenomenon that the hollow cup armature cup shaft moves axially is overcome;
5. the front end of the armature cup shaft 1 is provided with a locking ring 6, and the locking ring 6 and the armature cup shaft 1 are welded into a rigid body by laser welding.
After adopting above-mentioned structure, this embodiment's beneficial effect is: the specific embodiment provides an axial elastic displacement coreless rotor with double pre-tightening forces, and due to the adoption of a double-ball bearing structure, the efficiency of a motor is improved, and the no-load current is reduced; because the stainless steel compression spring is used, the two ball bearings are simultaneously subjected to pre-pressure, and the problem of axial movement of the armature cup of the hollow cup is solved. Finally, the purposes of reducing noise and reducing no-load current are achieved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (4)
1. A hollow cup rotor with double pre-tightening force axial elastic displacement comprises an armature cup shaft (1), a ball bearing (2), a first stainless steel elastic sheet (3), a stainless steel spring (4), a second stainless steel elastic sheet (5) and a locking ring (6); the method is characterized in that: ball bearings (2) are sleeved at the front end and the rear end of the armature cup shaft (1) in an interference manner, and the outer ring end faces on the opposite surfaces of the ball bearings (2) at the front end and the rear end are arranged on the side surface of a bearing installation groove of the motor shell in a butting manner; wherein, the armature cup shaft (1) at the front end of the ball bearing (2) at the front end is sleeved with a stainless steel spring plate (3), the armature cup shaft (1) at the front end of the stainless steel spring plate (3) is sleeved with a stainless steel spring (4), the armature cup shaft (1) at the front end of the stainless steel spring (4) is sleeved with a stainless steel spring plate (5), and the armature cup shaft (1) at the front end of the stainless steel spring plate (5) is sleeved with a locking ring (6).
2. The hollow-cup rotor with double pre-tightening forces for axial elastic displacement according to claim 1, wherein: the front end and the rear end of the stainless steel spring (4) are respectively abutted against the side surfaces of the first stainless steel elastic sheet (3) and the second stainless steel elastic sheet (5).
3. The hollow-cup rotor with double pre-tightening forces for axial elastic displacement according to claim 1, wherein: the pre-pressure of the stainless steel spring (4) is 40-50 g.
4. The hollow-cup rotor with double pre-tightening forces for axial elastic displacement according to claim 1, wherein: the armature cup shaft (1) and the locking ring (6) are welded and fixed into a rigid body structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921087181.0U CN209881505U (en) | 2019-07-12 | 2019-07-12 | Axial elastic displacement hollow cup rotor with double pre-tightening forces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921087181.0U CN209881505U (en) | 2019-07-12 | 2019-07-12 | Axial elastic displacement hollow cup rotor with double pre-tightening forces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209881505U true CN209881505U (en) | 2019-12-31 |
Family
ID=68949010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921087181.0U Expired - Fee Related CN209881505U (en) | 2019-07-12 | 2019-07-12 | Axial elastic displacement hollow cup rotor with double pre-tightening forces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209881505U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266128A (en) * | 2019-07-12 | 2019-09-20 | 深圳市鑫宝达电机有限公司 | There are one kind double pretightning force axial elasticities to be displaced drag cup rotor |
| CN112039277A (en) * | 2020-08-24 | 2020-12-04 | 珠海格力电器股份有限公司 | Motor shaft end supporting structure and motor |
-
2019
- 2019-07-12 CN CN201921087181.0U patent/CN209881505U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266128A (en) * | 2019-07-12 | 2019-09-20 | 深圳市鑫宝达电机有限公司 | There are one kind double pretightning force axial elasticities to be displaced drag cup rotor |
| CN112039277A (en) * | 2020-08-24 | 2020-12-04 | 珠海格力电器股份有限公司 | Motor shaft end supporting structure and motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209881505U (en) | Axial elastic displacement hollow cup rotor with double pre-tightening forces | |
| US7217106B2 (en) | Electro-hydraulic power steering apparatus | |
| KR20140106598A (en) | Electric machine having an axial prestress between a rolling bearing and a housing part, and method for operating such an electric machine | |
| EP1265339B1 (en) | Method of assembling a motor with ball bearings | |
| EP1134423B1 (en) | A blower | |
| KR20190108825A (en) | Rotor assembly for motor | |
| CN201750266U (en) | Axial anti-play structure of rotor of small-power direct-current motor | |
| WO2023123527A1 (en) | Brushless motor stator, brushless motor stator fixing method, and brushless motor | |
| US20040080236A1 (en) | Armature support structure of starter for automotive engine | |
| CN209881571U (en) | Motor rotor axial positioning structure and windscreen wiper motor | |
| CN110266128A (en) | There are one kind double pretightning force axial elasticities to be displaced drag cup rotor | |
| CN211266727U (en) | Self-resetting limited angle torque motor | |
| CN205001361U (en) | External rotor electric machine and pivot thereof | |
| CN203045508U (en) | Numerical control grinding wheel dressing motorized spindle | |
| CN210232136U (en) | Quick compression fittings of electric motor car motor bearing frame | |
| CN220382869U (en) | Hub motor structure | |
| JP3669532B2 (en) | Starter | |
| CN221113495U (en) | Vehicle drive assembly and vehicle | |
| CN220234295U (en) | Outer rotor motor stator assembly structure | |
| CN213116831U (en) | Water pump rotor and water pump thereof | |
| CN219535801U (en) | Bearing assembly, motor and dryer | |
| CN221081045U (en) | Three-bearing electric drive assembly and electric drive system | |
| CN215289349U (en) | Drum type washing machine transmission structure and drum type washing machine | |
| CN210669774U (en) | Push rod motor self-locking structure | |
| CN211685301U (en) | Novel flexible coupling mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191231 Termination date: 20210712 |