CN101425716A - Motor with improved rear cap bearing support construction - Google Patents
Motor with improved rear cap bearing support construction Download PDFInfo
- Publication number
- CN101425716A CN101425716A CNA2008102196482A CN200810219648A CN101425716A CN 101425716 A CN101425716 A CN 101425716A CN A2008102196482 A CNA2008102196482 A CN A2008102196482A CN 200810219648 A CN200810219648 A CN 200810219648A CN 101425716 A CN101425716 A CN 101425716A
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- Prior art keywords
- bearing
- motor
- rear end
- bearing chamber
- end cap
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Abstract
The invention discloses an electric motor with a bearing seat structure of an improved rear end cover, which comprises a shell, a rear end cover is installed on the shell, a bearing chamber is arranged on the rear end cover, a bearing is installed in the bearing chamber and is connected with a rotating axle, a radial O-shaped ring pit slot is arranged on the inner wall of the bearing chamber, an O-shaped ring is arranged in the pit slot, and the outer wall of the bearing is closely matched with the O-shaped ring. Since the rubber O-shaped ring device is arranged in the bearing chamber of the rear end cover, therefore, the sealing performance is good; a pit slot is arranged on a bearing chamber 3; the processing technology is simple, and the cost is low.
Description
Technical field
The present invention relates to a kind of motor technology, particularly a kind of motor that improves rear cap bearing support construction.
Background technology
The bearing of conventional motors and the design of rear end cap are as shown in Figure 1, it cooperates is interference fits, the inwall slyness of the bearing chamber 3 on the rear end cap 2, owing to be subjected to the influence of machining apparatus precision and bearing outside diameter dimensional tolerance, when causing practical set, bearing and end cap are loose fit, have caused following several phenomenon that influences product quality:
1, sealing is poor, and water and dust are easy to scurry into motor internal from the gap of bearing and end cap.
Skid when 2, bearing and end cap rotate, cause that the vibration of motor and noise increase, especially when the motor feels hot, more serious.
3, motor shaft extension play and quicken bearing wear and cause the rotor shifting noise.
Above situation has had a strong impact on motor quality, and class can't improve, and finally causes the shortening of electrical machinery life.
In addition, also have the part motor be adopt the mode that sealing ring is set on the bearing make it and the inwall of bearing chamber between be tightly connected, still, the requirement on machining accuracy height of this structure on bearing, be difficult to carry out or cost higher,
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of bearing pedestal favorable sealing property, long service life, novel motor that noise is low.
The technical solution adopted in the present invention is:
A kind of motor that improves rear cap bearing support construction, comprise casing, rear end cap is installed on the casing, bearing chamber is arranged on the rear end cap, bearing is installed in the bearing chamber, and bearing is connected with rotating shaft, and the inwall of described bearing chamber is provided with radially O type circle hole groove, be provided with O type circle in the groove of hole, the outer wall of bearing and O type circle are closely contacted with.
The invention has the beneficial effects as follows: at the built-in rubber o-ring device of the rear end cap bearing chamber of motor, it has reached following three kinds of purposes.
1, eliminates the gap of bearing and rear end cap, made water and dust can't scurry into motor internal, had good sealing.
2, certain stiction is arranged between rear end cap and bearing,, also can't produce skidding even the motor feels hot when serious.
3, suitable pretightning force is arranged between rear end cap and bearing, lowered the noise that the rotor axial play causes, improved bearing life simultaneously.
4, on bearing chamber, offer radially O type circle hole groove, simple, the realization easily of processing technology, the precision that need not increase machining apparatus can have excellent sealing performance.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the rear end cap of existing motor;
Fig. 2 is the structural representation of the rear cap bearing support of motor of the present invention;
Fig. 3 is the rear end cap structural representation of motor of the present invention.
Embodiment
With reference to Fig. 2, Fig. 3, a kind of motor that improves rear cap bearing support construction of the present invention, comprise casing 1, cast aluminium rear end cap 2 is installed on the casing 1, bearing chamber 3 is arranged on the rear end cap 2, bearing 4 is installed in the bearing chamber 3, bearing 4 is connected with rotating shaft 5, and the inwall of described bearing chamber 3 is provided with radially O type circle hole groove 6, is provided with O type circle 7 in the groove of hole, after installing, the outer wall of bearing 4 and O type circle 7 are closely contacted with.
At the built-in rubber o-ring device of the rear end cap bearing chamber of motor, favorable sealing property, and be on bearing chamber 3, to offer the hole groove, its processing technology is simple, with low cost.
Certainly, the present invention is not limited to above-mentioned execution mode, as long as it reaches technique effect of the present invention with essentially identical means, all should belong to protection scope of the present invention.
Claims (1)
1, a kind of motor that improves rear cap bearing support construction, comprise casing (1), rear end cap (2) is installed on the casing (1), bearing chamber (3) is arranged on the rear end cap (2), bearing (4) is installed in the bearing chamber (3), and bearing (4) is connected with rotating shaft (5), it is characterized in that: the inwall of described bearing chamber (3) is provided with radially O type circle hole groove (6), be provided with O type circle (7) in the groove of hole, the outer wall of bearing (4) and O type circle (7) be contact closely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102196482A CN101425716A (en) | 2008-12-04 | 2008-12-04 | Motor with improved rear cap bearing support construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102196482A CN101425716A (en) | 2008-12-04 | 2008-12-04 | Motor with improved rear cap bearing support construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101425716A true CN101425716A (en) | 2009-05-06 |
Family
ID=40616108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102196482A Pending CN101425716A (en) | 2008-12-04 | 2008-12-04 | Motor with improved rear cap bearing support construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101425716A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447340A (en) * | 2010-10-01 | 2012-05-09 | 中山大洋电机股份有限公司 | Bearing chamber structure for end cap of motor |
| CN103516104A (en) * | 2012-06-15 | 2014-01-15 | Lg伊诺特有限公司 | Motor |
| CN103812258A (en) * | 2014-01-20 | 2014-05-21 | 东明机电（深圳）有限公司 | Small-sized or micro motor for breathing machine |
-
2008
- 2008-12-04 CN CNA2008102196482A patent/CN101425716A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447340A (en) * | 2010-10-01 | 2012-05-09 | 中山大洋电机股份有限公司 | Bearing chamber structure for end cap of motor |
| CN103516104A (en) * | 2012-06-15 | 2014-01-15 | Lg伊诺特有限公司 | Motor |
| CN103516104B (en) * | 2012-06-15 | 2018-05-11 | Lg伊诺特有限公司 | Motor |
| US9973054B2 (en) | 2012-06-15 | 2018-05-15 | Lg Innotek Co., Ltd. | Motor with damper member on bearing |
| CN103812258A (en) * | 2014-01-20 | 2014-05-21 | 东明机电（深圳）有限公司 | Small-sized or micro motor for breathing machine |
| CN103812258B (en) * | 2014-01-20 | 2016-06-08 | 东明机电（深圳）有限公司 | Small-sized or micromachine on respirator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090506 |