Small-sized chain window opening device reducer
Technical field
The present invention relates to a kind of reducer of chain type window opening device.
Background technology
Electric window-opening machine has entered into huge numbers of families, develops towards littler direction.Reducer is the critical component of small-sized electric window opening device.The used reducer structure of known chain type electric window-opening machine is complicated, and its housing all adopts structural member such as steel plate to make, the poor rigidity of reducer, and volume is bigger, and machining accuracy is low, and transmission efficiency is low, has influenced further developing of chain type electric window-opening machine.(reference: the window opening device reducer that woods Electric Machine Co., Ltd produces on the Dongguan City).
Summary of the invention
For the reducer structure that overcomes known chain type window opening device complicated, poor rigidity, volume is bigger, machining accuracy is low, the defective that transmission efficiency is low, the present invention provides a kind of small-sized chain window opening device reducer, this reducer structure is simple, volume is little.
Technical scheme of the present invention is: this small-sized chain window opening device reducer comprises kirsite housing and direct current generator; Direct current generator one end is connected with the electronic circuit board component; The direct current generator other end is connected with worm screw; Worm screw is positioned at the kirsite housing, and one-level engineering plastics gear assembly, secondary engineering plastics gear assembly, three grades of engineering plastics gear assemblies are positioned at the kirsite housing, and worm screw is meshed with one-level engineering plastics gear assembly; One-level engineering plastics gear assembly is meshed with secondary engineering plastics gear assembly; Secondary engineering plastics gear assembly is meshed with three grades of engineering plastics gear assemblies, and the sprocket wheel of three grades of engineering plastics gear assemblies and chain drive-belt is one for being fixedly linked, sprocket wheel chain drive-belt motion when tertiary gear rotates.Wherein the gear wheel material of one-level, secondary gear assembly is engineering plastics, and pinion is an alloy steel, and the gear wheel and the sprocket wheel of tertiary gear assembly are engineering plastics.
Advantage of the present invention: housing adopts cast zinc alloy, has intensity and good cushioning effect preferably, its compact conformation, and good rigidly, machining accuracy is high, low price.Every grade has all been used engineering plastics gear, sprocket wheel in driving-chain, and this project plastics are modified polyacetal, and its intensity is high; Life-span is long, and reasonable price can reduce noise greatly; Reduce production costs, can be less with or without lubricating grease, improved transmission efficiency; Prolong service life of a machine, improve output torque and thrust.Appearance and size is very little, and output torque is big, can satisfy the requirement of small-sized window opening device to reducer.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the present of invention.
Fig. 2 is the vertical view of Fig. 1.
1. kirsite housings among the figure, 2. three grades of engineering plastics gear assemblies, 3. secondary engineering plastics gear assembly, 4. one-level engineering plastics gear assembly, 5. worm screw, 6. direct current generator, 7. electronic circuit board component, 8. reducer side cover.
The specific embodiment
In Fig. 1 and Fig. 2; This small-sized chain window opening device reducer comprises kirsite housing 1 and direct current generator 6, and direct current generator 6 one ends are connected with electronic circuit board component 7, and direct current generator 6 other ends are connected with worm screw 5; Worm screw 5 is positioned at kirsite housing 1; One-level engineering plastics gear assembly 2, secondary engineering plastics gear assembly 3, three grades of engineering plastics gear assemblies 4 are positioned at kirsite housing 1, and worm screw 5 is meshed with one-level engineering plastics gear assembly 4, and one-level engineering plastics gear assembly 4 is meshed with secondary engineering plastics gear assembly 3; Secondary engineering plastics gear assembly 3 is meshed with three grades of engineering plastics gear assemblies 2; In three grades of engineering plastics gear assemblies 2, the sprocket wheel of tertiary gear and chain drive-belt is connected as one, sprocket wheel chain drive-belt motion when tertiary gear rotates.