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Electrically conducting contact and method for production thereof

一种接触片、接触元件的技术，应用在制造柔性的开关垫或者输入装置,柔性的开关垫或者输入装置领域，能够解决损坏、纤维折断等问题，达到制造成本低的效果

Active Publication Date: 2008-04-30
ABA科技
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Exactly like the particles in the carbon sheet, the disadvantage of this solution is that it must always be ensured that the fibers are in practically sufficient contact in order to guarantee electrical conductivity
Furthermore, it is this contact which has the property that it is quickly damaged when the switch is operated vigorously, and the fibers have a tendency to break with age

Method used

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  • Electrically conducting contact and method for production thereof
  • Electrically conducting contact and method for production thereof
  • Electrically conducting contact and method for production thereof

Examples

Experimental program
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Embodiment Construction

[0043] In particular, the invention can be understood in relation to a switch pad, as it should firstly be explained generally with reference to FIGS. 1 and 2 .

[0044] FIG. 1 shows a cross-section of the switching area of ​​a switching pad. Conductor tracks 2 , 3 are arranged on the circuit board 1 . These conductor tracks are interrupted at defined points at which a contact is to be made from above by a manual input (at the push of a button), ie a bridge between the two conductor tracks 2 , 3 is to be achieved. For this purpose, there is a switching pad on the printed circuit board, which in this particular case is formed by a plastic cap 4 , beneath which a flexible element, for example made of silicone, is respectively arranged in the switching area. These flexible elements are made of silicone domes 5 which connect upwards to the plastic cap 4 . Beside the interruption of the conductor tracks, the dome 5 is supported on the circuit board with the switch pad base 6 via ...

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PUM

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Abstract

The invention relates to a contact element (7) for the intermittent contacting of conductor tracks (2, 3) on a circuit board, in particular, for flexible touch pads (4-6), for example for flexible input devices in the automobile industry. According to the invention, a very reliable construction which is particularly suitable for high voltage applications may be achieved, whereby the contact element is made from a metal foam (8). The metal foam is preferably at least partly infiltrated by an elastomeric material which can also be the material of construction of the touchpad. The invention further relates to a method for production of said contact element and touchpads / input devices with such contact pads and the use of said contact pads (7).

Description

technical field [0001] The invention relates to a contact element for intermittently contacting conductor tracks on a circuit board, in particular for flexible switch pads or input devices. Furthermore, the invention relates to a method for producing a flexible switch pad or input device and the use of such a contact element. Background technique [0002] Silicone switch mats are used more and more frequently in the automotive sector, for example for switches such as mirror regulators, window regulators and the like. [0003] In resistance-coded circuits, it is decisive that very low-value and reliable contact elements are available. If high-resistance or unreliable contact elements are used, contact interference or even failure may result. It is also very important, especially for direct switch motors, that high currents such as 200mA can be switched. [0004] In such switching pads, a flexible pad, for example made of silicone, is typically arranged on the printed circu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H13/785H01H13/79
CPCH01H2203/038H01H2215/006H01H2201/032H01H13/79H01H13/785H01H2201/03H01H2239/004H01H2203/008H01H2203/01H01H2221/042Y10T29/49105
Inventor 克里斯托夫·凯斯特克劳斯·霍夫曼
Owner ABA科技