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Drop test table

A technology of drop test and test bench, applied in the direction of impact test, machine/structural component test, measuring device, etc., can solve the problems of high price, poor stability and repeatability, difficult to achieve, etc., and achieve human influence factors Low, good stability and repeatability, simple operation effect

Active Publication Date: 2014-08-06
深圳市唯特偶新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the description of the drop test rig in this standard is not very detailed, only the shape of a typical drop test device is given, but for the drop test, the stability and ease of handling of the drop test rig determine the reliability of the drop. The key factors of whether sexual evaluation has reference value
At present, most of the drop equipment sold in the market is concentrated on the test of the packaging box. The experimental conditions such as the acceleration amplitude and pulse duration are relatively low compared with the JCDEC standard, and the price is expensive, which cannot meet the drop test conditions for electronic products. On the other hand, according to the standard, it is still difficult to achieve the experimental conditions without secondary impact during the drop process, especially for laboratories, the drop equipment built by themselves often has poor stability and repeatability, and There are many human-influenced factors, which lead to large errors in the evaluation and prediction of drop reliability

Method used

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Embodiment Construction

[0012] specific implementation

[0013] The support system includes four guide rails 1, which support the entire drop platform structure by fixedly connecting the upper and lower tables, and four shock absorbing pads 2 are fixed on the lower table and evenly distributed at the four corners of the lower table to buffer the entire drop platform. The support system includes a rigid base 3 fixed on the lower table, and a collision plane 4 fixed below the falling table 18. Both of them are made of rigid materials, which can generate a large impact acceleration during the impact of the drop; the drop lifting system includes a motor 9, The pulley II10 is located above the falling table 21 and is connected by a conveyor belt. The ball screw 11 is located on both sides of the falling table 20 and is connected with the II pulley 10. The motor 9 can drive the pulley II10 forward and reverse through the frequency converter. Rotate to drive ball screw 11 to work forward and reverse; Cylind...

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Abstract

The invention provides a drop test table, and belongs to the technical field of shock test equipment. The drop test table is composed of a supporting system, a lifting drop system and a secondary-shock-preventing drop system. The supporting system comprises guide rails (1) and a shock pad (2). The four guide rails (1), an upper drop table surface (21) and a lower drop table surface (22) form a cube to support the whole test table and guarantee the stability and guidance performance. The shock pad (2) is arranged on the bottom of the test table. The lifting drop system comprises a rigid base (3) and a collision plane (4). The top end of the rigid base (3) is of a half-round shape. The collision plane (4) is fixed below a drop table surface (18). The drop test table is good in stability and repeatability. Different shock accelerated speeds can be obtained by adjusting the elevation height of the drop table surface, the test requirements under different conditions can be met, secondary shock is avoided, operation is simple, and a man-made influence factor is small.

Description

technical field [0001] The invention is a device for testing the reliability of electronic products including their components and joint-level solder joints, especially a drop test bench, which is a device for testing the reliability of electronic products including their components and joint-level solder joints, as a result of the work done by the acceleration of gravity, resulting in a mechanical impact force generated by the collision between the falling table and the rigid base. Background technique [0002] With the development of electronic products in the direction of thinner, lighter, shorter, and smaller, especially the increasing speed of replacement, traditional heat, electricity, and magnetism are no longer the main factors affecting the reliability of electronic products, but in the process of transportation or use Among them, due to the macroscopic mechanical impact force of the electronic product caused by accidental drop, it may cause failure from the shell to...

Claims

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Application Information

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IPC IPC(8): G01M7/08
Inventor 雷永平顾健温桂琛林健符寒光吴中伟
Owner 深圳市唯特偶新材料股份有限公司
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