Test head of press key tester

Abstract

The invention provides a test head of a press key tester, which comprises a fixed seat, a screw pipe, a test bar, an adjusting nut, a spring and an actuating arm, wherein the fixed seat is provided with a jointing part and a screw hole; the surface of the screw pipe is provided with a screw thread jointed with the screw hole of the fixed seat, the screw pipe is provided with a through hole, and an upper bearing and a lower bearing are installed inside the through hole; the test bar is provided with one first end jointed with a press block and one second end provided with a screw thread, and a bulge loop is provided between the first end and the second end; the adjusting nut is provided with a screw thread jointed with the screw thread of the second end of the test bar; the spring is sheathed between the bulge loop of the test bar and the upper bearing of the screw pipe; the actuating arm is jointed with the press key tester through the jointing part of the fixed seat and drives the reciprocating movement of the test head of the press key tester, and the press block tests press keys.

Description

technical field [0001] The invention relates to a test head of a button testing machine, in particular to a test head of a button testing machine whose pressing force can be adjusted by scale display and the height of a pressing block can be adjusted. Background technique [0002] Electronic products such as hand-held phones, calculator keyboards, portable electronic devices, etc. have many buttons. During the manufacturing process or the finished product must pass the test to ensure the quality of the buttons. The test method is usually to use a drive-test A button testing machine with a reciprocating head, which performs fatigue testing or life testing on the buttons, such as the invention patent of "button testing machine" published in China No. CN101236147A, and the utility model patent of "button testing machine" published in China No. CN2906582Y, which is driven by air pressure The piston of the cylinder is pushed out to press the button of the electronic product to be...

AI Technical Summary

Problems solved by technology

[0003] 1. It is difficult to adjust the pressing force of the piston driven by air pressure, and it is difficult to adapt to the different pressing force requirements of different electronic products

[0004] 2. Most of the cylinders and pistons are fixed, and it is impossible to test the buttons of different heights at the same time. For example, the keyboards of some telephones and calculators on the market are set on slopes, and the buttons at different positions have different differences from the bottom plane of the device. High, the existing technology can't test each button synchronously

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