Automobile embedded knob switch endurance test device

Abstract

The invention provides an automobile embedded knob switch endurance test device. The automobile embedded knob switch endurance test device comprises a compression motor, a lifting support, a test motor, a synchronous belt, a driving gear and two driven rolling wheels, wherein the test motor, the synchronous belt, the driving gear and the two driven rolling wheels are installed on the lifting support. The compression motor is vertically fixed to an equipment support and located above a tested switch. The compression motor drives the lifting support between the tested switch and the compression motor through a lead screw pair. The two driven rolling wheels are located on the two sides of a knob of the tested switch respectively. The driving gear is located above the tested switch and is in butt joint with an output shaft of the test motor. The synchronous belt is wound around the driving gear and the two driven rolling wheels and pressed against the knob of the tested switch. According to the automobile embedded knob switch endurance test device, the two driven rolling wheels presses the synchronous belt which drives the knob of the tested switch to rotate on the knob, so that surface contact between the synchronous belt and the knob is realized, relative sliding between the synchronous belt and the knob is effectively prevented, and reliability of test results is guaranteed.

Description

technical field [0001] The invention relates to a device for performing durability tests on built-in rotary switches used in automobiles, belonging to the technical field of automobiles. Background technique [0002] Knob switches have been widely used in automobiles. In order to ensure the reliability of the switches, durability tests are required. At present, the more advanced built-in knob switch durability test device is driven by a stepping motor and a flexible wheel in friction contact with the knob of the switch drives the knob to rotate. The rotation angle of the knob is controlled by the stepping motor. The switch knob provides rotational friction, and the size of the friction is adjusted by manually adjusting the relative position of the knob and the flexible wheel. There are following deficiencies in this test device: [0003] 1. In the prior art, the built-in knob switch is driven by the flexible wheel, and the flexible wheel is in line contact with the knob, w...

AI Technical Summary

Problems solved by technology

[0003] 1. In the prior art, the built-in knob switch is driven by the flexible wheel, and the flexible wheel is in line contact with the knob, which is prone to relative sliding, so the reliability of the test results cannot be guaranteed;

[0004] 2. Adjust the friction force of the knob by manually adjusting the clamping height of the switch, it is impossible to visually check the friction force, and it is difficult to meet the requirements of the knob for the operation force;

[0005] 3. Indirectly judge whether the switch is rotated in place according to the rotation angle of the stepping motor, and the error in the action of the knob cannot be found and corrected in time, and the accuracy of the test result cannot be guaranteed;

[0006] 4. The adjustment of the equipment needs to be done manually, the degree of automation is not high, and the work efficiency is low

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