Brushless motor gear plus oil reduction transmission mechanism
A deceleration transmission, brushless motor technology, applied in the direction of gear transmission, electric components, transmission, etc., can solve the problems of poor installation stability of bridge gears, large gear wear, large rotation resistance, etc., to achieve low rotation resistance, use Long life and noise reduction effect
Inactive Publication Date: 2011-12-14
叶桂顺
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Problems solved by technology
In the prior art, there is a shield on the outside of the speed reduction transmission mechanism composed of the bridge gear and the outer ring gear, and there is no isolation device between the inside and the motor rotor. Therefore, the bridge gear is made of plastic and does not add oil for lubrication (if oil is will enter the motor), and its disadvantages are: 1. The gear wears a lot and the service life is short; 2. The rotation resistance is large and the power consumption is large; 3. The installation stability of the bridge gear is poor
Method used
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Embodiment Construction
[0010] The gear of the brushless motor of the present invention adds engine oil deceleration transmission mechanism, as figure 1 As shown, the motor central shaft 1 is included, the central shaft does not rotate, the central shaft is equipped with a central gear 25, and the central gear rotates. The central gear is connected to the motor rotor 40, the magnetic steel 51, the coil 58 and the motor casing 37 through the bearing 42. The motor, the central Gear 25 drives bridge gear 16, and bridge gear 16 changes speed by external ring gear 19 (not rotating), and rotating speed is reduced to 386 rev / min from 2800 rev / min, drives upper gear fixed plate 9, and upper gear fixed plate 9 passes through single Directional device 13 (the specific structure of one-way device can be as figure 2 , image 3 As shown, the one-way device 13 is shaped on a central through hole 131, and the central through hole is matched with the upper gear fixing plate 9. There is a sliding groove 132 outside...
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Brushless motor gear plus oil reduction transmission mechanism, including the central shaft of the motor, the central shaft is equipped with a central gear, the central gear is connected to the motor composed of the motor rotor, magnetic steel, coil and the motor shell through the bearing, the central gear drives the bridge gear, the bridge gear The upper gear fixing plate is driven by the outer ring gear, and the upper gear fixing plate drives the motor upper cover through the one-way device. The motor upper cover is connected to the rear hub. It is characterized in that there is a lower gear fixing plate under the bridge gear, and the upper and lower gears are fixed. An upper fuel tank fixed plate and a lower fuel tank fixed plate are arranged outside the plate and the outer ring gear. With the upper and lower fuel tank fixing plates to surround the bridge gear and the outer ring gear, especially the lower fuel tank fixing plate isolates the gear reduction transmission mechanism from the motor, so that the bridge gear and the outer gear ring are made of metal materials and can be lubricated with engine oil , small rotation resistance, low wear, long service life, and avoid oil affecting the motor.
Description
technical field [0001] The invention relates to a brushless motor gear plus engine oil deceleration transmission mechanism, which is mainly suitable for electric bicycles and belongs to electric vehicle components. Background technique [0002] Electric vehicles use the motor rotor to drive the rear hub. In order to prolong the service life of the motor, brushless motors are generally used. In order to improve the climbing ability of the electric vehicle, a bridge gear and an outer ring gear reduction transmission mechanism are provided. In the prior art, the reduction transmission mechanism formed by the bridge gear and the outer ring gear has a shield on the outside, and there is no isolation device between the inside and the motor rotor. Therefore, the bridge gear is made of plastic and does not lubricate with oil (if oil is added will enter into the motor), and its disadvantages are: 1. The gear wears a lot and the service life is short; 2. The rotation resistance is la...
Claims
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IPC IPC(8): H02K7/116H02K7/10H02K29/00F16H1/02F16H57/04F16D41/064
Inventor 叶桂顺
Owner 叶桂顺