Automotive Built-in Knob Switch Endurance Test Device

Abstract

An automobile built-in knob switch durability test device, which includes a compression motor, a lifting bracket, a test motor installed on the lifting bracket, a synchronous belt, a driving gear and two driven rollers, and the compression motor is vertically fixed on the On the equipment support and above the tested switch, the pressing motor drives the lifting bracket between the tested switch and the pressing motor through the lead screw, and the two driven rollers are respectively located on both sides of the knob of the tested switch. The driving gear is located above the tested switch and docked with the output shaft of the testing motor, and the synchronous belt passes through the driving gear and two driven rollers and presses on the knob of the tested switch. The invention uses two driven rollers to press the synchronous belt that drives the knob of the tested switch to rotate on the knob, realizing the surface contact between the synchronous belt and the knob, effectively preventing the relative sliding between the belt and the knob, and ensuring the test results reliability.

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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