Pull Test Institute

Abstract

The invention discloses a drawing testing mechanism which comprises a support and a testing piece. The testing piece is arranged on the support and is in pivot joint with the support so that the testing piece can rotate relative to the support. When the support moves relative to elements to the tested in the arrangement direction of the elements to be tested, the testing piece is in rolling contact with one row of elements to be tested, and the testing piece abuts against the elements to be tested in the contact process to apply drawing force in the second direction to the elements to be tested so as to test the bonding strength of the elements to be tested; when the actual bonding force of the elements to be tested and a body is smaller than the drawing force, the elements to be tested are separated from the body, the testing piece and the elements to be tested are in rolling contact, and friction force borne by the testing piece is rolling friction force. Therefore, the friction force borne by the testing piece is small, the friction area is large, the abrasion of the testing piece is greatly reduced, and the service life of the testing piece is prolonged.

Description

technical field [0001] The invention describes a pull-out test mechanism, especially a pull-out test mechanism for a keycap. Background technique [0002] Generally speaking, the keycaps will fall off due to poor assembly and insufficient bonding force. Caps are tested for pull-out force, that is, the combination of each keycap needs to be checked one by one to ensure the quality of the keyboard. [0003] The existing device for pulling out the keycap uses a pick to pull the keycap with a preset force. The principle of the test is: the pick is arranged between the keycap and the keyboard, and the distance between the pick and the keycap The bottom (the part of the keycap facing the bottom plate) is matched, and a preset force is applied to the keycap by the plectrum, and the pulling of the keycap is judged according to whether the keycap can be detached from the keyboard under the action of the force Whether the force meets the standard. Among them, if the keycap breaks aw...

AI Technical Summary

Problems solved by technology

However, at present, in order to improve the detection efficiency, the same plectrum is usually used to detect multiple keycaps, and when testing, the plectrum is fixedly installed on the bracket. When performing the pull-out force test of the keycap, the plectrum With the movement of the bracket, it moves between the keycaps and slides and rubs against the keycaps. However, due to the fixed connection between the paddle and the bracket, the friction between the paddle and the keycap is large, and the friction surface is small. The parts in contact with multiple keycaps are fixed, so that the paddles are severely worn and have a short service life, for example, generally 4 hours, thereby increasing the cost

And for the staff, the staff needs to change the paddles frequently, which increases the labor intensity and labor cost of the staff

Images