The utility model relates to the automobile field, in particular to an air outlet actuator of an automobile air conditioner.
Background:
The air outlet actuator is a component used to control the start and stop of the air door and the amount of air output. Its working principle is as follows: After the micro motor is energized, it runs at a high speed, is reduced by a gear train, and finally is output by the output gear at a certain torque and speed. Then, the relevant damper is pushed through the rotating rod to realize the switch and angle conversion function of the automobile air conditioning damper. The structure design of the existing damper actuator is unreasonable, especially the thickness of the actuator is large, which is not convenient for integration.
Technical realization elements:
The technical solution of the present invention is: an air outlet actuator of an automobile air conditioner, the actuator includes a housing and an action mechanism arranged inside the housing, and the action mechanism includes:
Motor, a worm is fixedly connected to the output shaft of the motor;
The meshing worm is placed in the shell, including the polished rod section and the spiral section;
Gear, fixedly sleeved on the polished rod of the meshing worm, and matched with the worm;
The output gear is placed in the housing and matched with the spiral section of the meshing worm, and a transmission rod is fixedly clamped at the center of the output gear;
Wherein, the meshing worm is arranged obliquely, and the spiral section is higher than the polished rod section. In the aforementioned automobile air conditioner air outlet actuator, the cooperation of the motor, worm, meshing worm, gear and output gear is adopted to realize automatic adjustment of the automobile air conditioner air outlet. The meshing worm is inclined, and the spiral section is higher than the polished rod section. This design helps the meshing worm drive the output gear to rotate.
Two limiting grooves are provided in the housing, and two ends of the engaging worm are respectively clamped in the two limiting grooves. The limiting groove plays a limiting role and does not limit the rotation of the meshing worm.
The upper surfaces of the limiting grooves are all arc-shaped. The upper surface of the limit groove is designed in an arc shape, and its arc corresponds to the diameter of the screw rod. That is, the arc of the limit groove can exactly limit the screw rod, but it will not restrict the rotation of the screw rod.
The housing includes an upper housing and a lower housing, the lower housing is provided with a motor accommodating slot, a part of the motor is embedded in the motor accommodating slot, and the worm is located below the gear. This design method reduces the volume of the entire housing and makes the entire actuator structure more compact.
A plurality of positioning holes are arranged around the lower shell, and a plurality of positioning pillars are arranged on the upper shell, and the positioning pillars are inserted into the positioning holes one by one.
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