Key module and electronic device with key module

Abstract

The invention provides a key module which comprises a first magnetic plate, a circuit board, a spacer plate and a second magnetic plate which are arranged in sequence, wherein the circuit board is provided with a plurality of key contacts, each key contact comprises a first contact and a second contact which are separated from each other, the spacer plate is provided with a plurality of through holes in one-to-one correspondence with the plurality of key contacts, each key contact is exposed to a corresponding through hole, the second magnetic plate is used for generating a repellent force against the first magnetic plate and is provided with a plurality of conducting bulges in one-to-one correspondence with the plurality of key contacts, each conducting bulge extends into one corresponding through hole on the spacer plate and is opposite to the key contact exposed in the through hole, and each conducting bulge is used for contacting the key contact opposite to the conducting bulge and is connected with the first contact and the second contact electrically under the action of a pressing force. According to the technical scheme, an electronic device equipped with the key module is also provided.

Description

technical field [0001] The invention relates to a key module, in particular to a key module that is easy to assemble and an electronic device having the key module. Background technique [0002] With the rapid development of electronic technology, electronic products such as computers and mobile phones play an increasingly important role in people's daily life and automated production. The control and data input of computers, mobile phones, etc. are mainly realized by buttons. It can be seen that the importance of buttons is unquestionable. [0003] The keys of the existing electronic devices often have metal domes. During operation, the metal domes are deformed by force and are electrically connected between two contacts of the circuit, thereby realizing data input. When the external force disappears, the shrapnel resumes its deformation. When assembling the button, the metal shrapnel needs to be placed one by one at the predetermined position of the circuit, which will c...

AI Technical Summary

Problems solved by technology

When assembling the button, the metal shrapnel need to be placed one by one in the predetermined position of the circuit, which will consume a lot of manpower and time

In addition, the metal shrapnel is light and thin. When assembling, it often occurs that multiple pieces of metal shrapnel stacked on each other are placed at a predetermined position, which is not conducive to improving the assembly yield.

In addition, the metal shrapnel has a certain service life. After repeated pressing, fatigue will occur, which is not conducive to improving the service life of the button.

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