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Pressure button

A button and pressure technology, applied in the field of elevator buttons, can solve the problems of inconvenient use, high cost, easy contact and poor elevator buttons, etc., and achieve the effect of stable and reliable work, simple and compact structure

Active Publication Date: 2016-11-02
FOSHAN WABON ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a pressure button, which solves the problems of poor contact, high cost and inconvenient use of existing elevator buttons

Method used

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Embodiment Construction

[0015] The content of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] The strain bridge circuit of the present embodiment is as figure 1 Shown by resistor R1, resistor R2, resistor R3, resistor R4, and at the input terminal U and output terminal U OUT wires between them. Such a strain bridge circuit is a conventional circuit. Wherein, the resistor R1 is the strain gauge 5 . Such a strain bridge circuit belongs to a single-arm strain bridge circuit. figure 1 The IC in the circuit is an arithmetic circuit for processing the signal of the strain bridge circuit.

[0017] Such as figure 2 As shown, the pressure button of this embodiment includes: a push member 1 , a circuit board 2 and a bottom cover 3 . The circuit board 2 is located between the push member 1 and the bottom cover 3 . The circuit board 2 is provided with a strain bridge circuit and an operation circuit, and is also provided with a...

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Abstract

The invention provides a pressure button solving a problem that conventional elevator buttons are liable to poor contact, are high in cost, and inconvenient to use. The pressure button comprises a press member, a circuit board, and a bottom cover. Especially, the circuit board is arranged between the press member and the bottom cover and is provided with a strain bridge circuit and an operational circuit for processing the signals of the strain bridge circuit. The strain gage of the strain bridge circuit tightly clings to the surface of the press member or is fixed inside the press member. The pressure button is simple and compact in structure, has no exposed mechanical contacts, stable and reliable in operation, and is not required to contact human skin.

Description

technical field [0001] The invention relates to an elevator button, in particular to a touch-sensitive elevator button. Background technique [0002] The existing elevator operation buttons include the up button and down button of the call panel, as well as the floor buttons, door open button and door close button of the operation panel. These buttons are usually made of mechanical contact structures containing special elastic parts . However, there is a problem that mechanical contacts are prone to poor contact. [0003] There are one-piece capacitive sensing touch buttons on the market. The change of the medium between the electrodes will directly affect the capacitance, and the circuit usually detects the change of the capacitance between the electrodes and the ground to judge whether there is a passenger's finger touching the button. However, temperature, humidity, passenger gloves, finger size, etc. directly affect the sensitivity of the touch, and the buttons are pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/96
CPCH03K17/9645
Inventor 萧海光
Owner FOSHAN WABON ELECTRONICS TECH