Device for high and low temperature durability test of switches
A high-low temperature, switching technology, applied in the direction of measuring devices, mechanical parts testing, machine/structural parts testing, etc., can solve the problems of high equipment cost, short test life, inability to meet test requirements, etc., to improve efficiency and reduce cost effect
Active Publication Date: 2016-06-29
江苏省优联检测技术服务有限公司
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Problems solved by technology
[0004] According to the above method, many automotive electrical button switches use cylinders, motors or other linear motion moving parts to conduct routine durability tests on the switch buttons at room temperature, but the durability test at room temperature has been unable to meet the requirements of the test. Demand, especially the research and development test of new models, and now most automobile manufacturers require to simulate the ambient temperature for the durability test of auto parts, that is, to conduct durability tests in high temperature and low temperature environments
Due to the short test life of conventional driving parts in high temperature or low temperature environment, it cannot meet the test requirements at ambient temperature
Even for the test at room temperature, if the switch button is tested with a servo motor and a linear motor, the cost of the equipment will be high, and the cylinder action has impact, which is easy to damage the test sample
Method used
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Embodiment 1
[0025] A group of two guide rod cylinders is the action actuator of a switch button. The switch button is placed on the product sample seat, and then placed in the test mechanism, and then the start switch is pressed, such as image 3 As shown, one of the guide rod cylinders presses one end of the seesaw 8 through the push rod, so that the other end of the seesaw 8 pries the switch button to move upward to form the buckle of the switch. When the piston rod of a guide rod cylinder moves from the end of the guide rod cylinder to the At the front end of the guide rod cylinder, the guide rod cylinder runs to the maximum stroke. At this time, the switch button moves upward to the maximum position, and the piston rod of the first guide rod cylinder retracts, so that the push rod recovery switch button returns to the initial position. At this time, Such as Figure 4 As shown, the piston rod of the other guide rod cylinder stretches out so that the push rod presses the switch button, ...
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The invention provides a device for high and low temperature durability testing of switches. The bench is divided into an outer layer and an inner layer, which are respectively a cylinder, a pneumatic control mechanism and a testing mechanism. The cylinder and the pneumatic control mechanism include a guide rod cylinder and a pneumatic control device. , two guide rod cylinders are arranged in parallel on the bench as a group, the guide rod cylinder is connected to the zipper through the connecting rod, the zipper passes through the bench and is connected to the spring mounting seat through the connecting block, and the spring installed in the spring mounting seat is connected to the Push rod touch, two guide rod cylinders form a group, one of the guide rod cylinders has a rocker under the push rod, and one end is formed by pressing down the push rod of one guide rod cylinder to pry the other end to form a switch button. Buckle-pull arrangement, the push rod of the other guide rod cylinder is pressed down to cooperate with the switch button. In the present invention, the impact on the switch key is slowed down through the transmission of force by the cable and the action of the spring in the spring mounting seat on the push rod, so as to protect the switch key and reduce the cost.
Description
technical field [0001] The invention relates to a device for high and low temperature endurance testing of switches. Background technique [0002] At present, the durability test of many automotive electrical switches (such as window regulator switches, DC switches, etc.) is mainly carried out according to the method in Chapter 4.17 of QC / T198-1995, as follows: Install the switch on the test bench according to the normal working position, Apply the rated load, and complete the working times specified by various switch standards at a rate of 10 to 30 full conversions per minute. [0003] For continuous duty switches, interruptions are allowed during the test, but each continuous working time should not be less than 4h. For short-time duty switches, forced ventilation is allowed for cooling. [0004] According to the above method, many automotive electrical button switches use cylinders, motors or other linear motion moving parts to conduct routine durability tests on the swi...
Claims
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IPC IPC(8): G01M13/00
Inventor 周剑峰张桂月王晓峰
Owner 江苏省优联检测技术服务有限公司