Device for testing durability of buzzer for automobile
A durability test and buzzer technology, which is applied in the direction of measuring devices, vehicle testing, machine/structural component testing, etc., can solve problems such as the inability to accurately test the reliability of the buzzer, and achieve a solution to the inability to accurately test the buzzer. The reliability of the buzzer, the convenience of operation and maintenance, and the effect of simple structure
Active Publication Date: 2011-09-07
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology
[0004] The buzzer durability test device for automobiles provided by the invention can perform durability tests on the buzzer, and solves the reliability problem that the buzzer cannot be accurately tested
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[0018] Below, in conjunction with accompanying drawing and specific embodiment, the automobile buzzer durability test device of the present invention is described in further detail;
[0019] According to the durability test requirements in QC / T550-1999 "Buzzer for Automobiles", according to the corresponding test voltage in the test, make the buzzer sound for 1min (60S), stop for 30S continuously, and the durability times of Class A products are 3000 times, 600 times for B-type products.
[0020] figure 1 It is the structural diagram of the buzzer durability test device for automobiles, in figure 1 Among them, the automotive buzzer durability test device consists of a time relay 1, an air switch 2, a DC stabilized power supply 3, an AC contactor 4 and a counter 5. The control of each component is as follows:
[0021] Air switch 2 controls the power on and off of the AC components of the test device;
[0022] Time relay 1 controls the on-off time of AC contactor 4. According...
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The invention discloses a device for testing the durability of a buzzer for an automobile. The test device comprises an air switch, a time relay, an AC contactor, a DC stabilized power supply, a counter and other elements, wherein the air switch is used for controlling the on and off of the power supply of the test device and plays a role in security protection; the time relay is a cycling time relay, is provided with a pair of normally open contacts and a pair of normally closed contacts and used for controlling the on-off time of the AC contactor; the AC contactor is used for controlling the on-off time of the buzzer and controlling the counter to count; the DC stabilized power supply provides a test power supply for the automobile buzzer; and the counter is used for accumulated count of the durability test. The device for testing the durability of the buzzer for the automobile provided by the invention solves the problem that the reliability of the buzzer cannot be accurately tested and is suitable for the automobile with the buzzer.
Description
technical field [0001] The invention belongs to the field of test device counting, in particular to a buzzer durability test device for automobiles. Background technique [0002] In the prior art, the durability test of the buzzer for automobiles is carried out manually, which is laborious and cannot accurately assess the reliability of the buzzer for automobiles. Contents of the invention [0003] In order to overcome the above problems in the prior art, the present invention provides a buzzer durability test device for automobiles. The control method of the device is to control the power-on and power-off time of the AC contactor by a time relay, and the AC contactor controls the duration of the automobile. The on-off time of the buzzer can realize the automatic control of the durability test of the buzzer for automobiles. [0004] The buzzer durability test device for automobiles provided by the invention can carry out the durability test on the buzzer, and solves the r...
Claims
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IPC IPC(8): G01M17/007
Inventor 贺凯郑静蓉黄祯祥蔡恒
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD