Motor with improved rear cap bearing support construction

A technology of a rear end cover and a bearing seat, applied in the field of electric motors, can solve the problems of shortened motor life, accelerated bearing wear, and high requirements for machining accuracy, and achieves the effects of simple machining process, improved bearing life, and good sealing performance.

CN101425716AInactive Publication Date: 2009-05-06开平市三威微电机有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2009-05-06
Estimated Expiration
Not applicable · inactive patent

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    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
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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.
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Description

technical field

[0001] The invention relates to a motor technology, in particular to a motor with an improved rear end cover bearing seat structure. Background technique

[0002] The design of the bearing and the rear end cover of the traditional motor is as follows: figure 1 As shown, the fit is a transition fit, and the inner wall of the bearing chamber 3 on the rear end cover 2 is smooth. Due to the influence of the precision of the machining equipment and the tolerance of the outer diameter of the bearing, the bearing and the end cover are loosely fitted during actual assembly. Caused the following phenomena that affect product quality:

[0003] 1. The seal is poor, and water and dust can easily enter the motor from the gap between the bearing and the end cover.

[0004] 2. The bearing and the end cover slip when rotating, causing the vibration and noise of the motor to increase, especially when the motor is heating up, it is more serious.

[0005] 3. The movement of ...

Examples

Embodiment Construction

[0020] refer to figure 2 , image 3 , a motor with an improved rear end cover bearing seat structure of the present invention includes a casing 1, a cast aluminum rear end cover 2 is installed on the casing 1, a bearing chamber 3 is arranged on the rear end cover 2, and a bearing chamber 3 is installed in the bearing chamber 3. Bearing 4, the bearing 4 is connected with the rotating shaft 5, the inner wall of the bearing chamber 3 is provided with a radial O-ring pit 6, and an O-ring 7 is arranged in the pit, after installation, the outer wall of the bearing 4 and the O-shaped Circle 7 is closely associated.

[0021] The rubber O-ring device is built in the bearing chamber of the rear end cover of the motor, and the sealing performance is good, and a pit is provided on the bearing chamber 3, and the processing technology is simple and the cost is low.

[0022] Certainly, the present invention is not limited to the above-mentioned embodiments, as long as they achieve the tec...