Outer rotor waterproof motor and waterproof method

A technology of external rotor motors and waterproof motors, which is applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problem of being unable to prevent water from entering, and achieve a highly reliable water blocking effect

Inactive Publication Date: 2009-04-29
HANGZHOU DUNLI ELECTRIC APPLIANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcomings: Although the outer rotor and the middle cover are connected by bearings, it still cannot prevent water from entering from the bearing between the outer rotor and the middle cover

Method used

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  • Outer rotor waterproof motor and waterproof method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: with reference to attached figure 1 . The outer rotor waterproof motor includes an outer rotor motor. The end surface of the motor end cover 1 wall has a groove structure. Drainage holes 4 are arranged on the outer wall of the groove wall on the end surface of the wall. The matching end surface of the rotor 3 and the motor end cover 1 has a double-sided convex structure, the matching end surface of the rotor 3 and the motor end cover 1 has a convex structure and is concave-convex matched with the groove on the wall end surface of the motor end cover 1, and the retaining ring 2 is located at Between rotor 1 and motor end cover 2. The processing and manufacture of the above-mentioned components are prior art, and will not be described here.

Embodiment 2

[0010] Embodiment 2: On the basis of Embodiment 1, the waterproof method of the outer rotor waterproof motor, when the rotor 3 rotates, the inner circular surface of the double-sided boss on the end surface of the rotor 3 and the retaining ring 2 form a gap rotation positive pressure sealing fit, and the outer There is a gap between the round surface and the groove wall of the end surface of the motor end cover, and the positive pressure seal fits, so that the water cannot enter the gap between the rotor and the end cover of the motor, or the water that enters the groove of the end surface of the motor end cover 1 is pressed against the air flow, so that Water is discharged from the drain hole 4 along the inner wall of the groove in the wall end surface of the motor end cover 1 .

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Abstract

The invention relates to an external rotor waterproof motor which not only can effectively prevent water from entering between a stator and a rotor, but also can discharge water which enters between the stator and the rotor from a drainage hole in case and a waterproof method. The external rotor waterproof motor comprises an external rotor motor, wherein, the end surface of the end closure wall of the motor is groove structure; an end surface that the rotor is matched with a motor end closure is lug boss structure and is in concavo-convex matching with the groove of the end surface of the end closure wall of the motor; and a limit ring is arranged between the rotor and the motor end closure. The invention has the advantages that the motor not only can ensure that positive air pressure can be generated between the rotor and the motor end closure to prevent water from entering between the rotor and the stator under dynamic state, but also can effectively block pass of rainwater to prevent rainwater from entering between the stator and the rotor as the concavo-convex sealing match of the motor also can form a plurality of water stop lines under static state, thereby achieving the effect of water stop with high reliability.

Description

technical field [0001] The invention relates to an outer rotor waterproof motor and a waterproof method that can effectively prevent water from entering between the stator and the rotor, and discharge the water that should ever enter the space between the stator and the rotor through drain holes, and a waterproof method, belonging to the field of outer rotor motor manufacturing. Background technique [0002] Authorized announcement number CN100983523Y, name "a sealed external rotor motor", its technical point is that the rear cover with shaft is integrated with the shaft and the rear cover, and the shaft is provided with bearing gears from left to right, from small to large (a ), the iron core gear (b), the bearing gear (c), the bearing (4) is pressed into the middle cover and pressed together to the bearing gear (c) of the back cover with shaft, and the inner stator (2) of the embedded wire is pressed into the shaft The stator core gear (b) of the cover, the bearing (8) is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/04H02K5/10
CPCY02A30/14
Inventor 计国良马宪民
Owner HANGZHOU DUNLI ELECTRIC APPLIANCES
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