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Touching key structure and household electrical appliance using the same

A touch and key technology, applied in the field of touch key structure and household appliances, can solve the problems of unstable signal detection, dislocation or displacement, and insensitive signal induction.

Active Publication Date: 2008-12-17
BSH ELECTRICAL APPLIANCES JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the sensing element is a spring structure, it is not easy to locate during the installation process, and usually requires professional fixtures, otherwise it is easy to cause misalignment or displacement, resulting in unstable signal detection
At the same time, due to the limitation of the spring structure itself, the contact area between the sensing element and the control panel is relatively small, so the capacitance of the sensing element is also relatively small, and when the user touches the control panel, the area above the spring corresponds to The detected capacitance change is even smaller, resulting in less sensitive signal sensing in practical applications

Method used

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  • Touching key structure and household electrical appliance using the same
  • Touching key structure and household electrical appliance using the same

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Embodiment Construction

[0012] like figure 1 As shown, as a specific embodiment of the present invention, the touch key structure 1 includes an operation panel 2 and a printed circuit board 3 and is located between the operation panel 2 and the printed circuit board 3 and is welded to the printed circuit board. Several capacitive sensing devices 4 on the board 3, the capacitive sensing devices 4 are roughly in the shape of " ", "and" or other similar shapes, including the sensing part 5 and the support part 6, wherein the contact between the sensing part 5 and the operation panel 2 is surface contact, for example, when the operation panel 2 When it is a planar structure, the sensing part 5 is also a planar structure; when the operation panel 2 is a spherical structure or an arc structure, the sensing part 5 is also designed to be a spherical structure or an arc structure, so that the sensing The fit between the part 5 and the operation panel 2 is closer, and the capacitance of the capacitive sensin...

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Abstract

The invention provides a touch key structure and a household electrical appliance using the touch key structure. The key structure comprises an operating panel, a printed circuit board, and a capacitance-sensing device which is arranged between the operating panel and the printed circuit board and is welded to the printed circuit board. The capacitance-sensing device comprises an induction part. The induction part touches the operating panel through surfaces, so that the induction part touches the operating panel more tightly, and the capacity of the capacitance-sensing device is increased, thereby the capacitance-sensing device is induced more sensitively to the touch of a user.

Description

【Technical field】 [0001] The invention relates to a touch key structure and a household appliance using the touch key structure. 【Background technique】 [0002] With the development of technology, touch buttons are more and more applied to household appliances or consumer electronics products due to their light and fast touch sensing, scratch resistance, resistance to dust, water and dirt, and suitability for harsh environments. For example, U.S. Patent Application US 2005 / 0179673A1 discloses a capacitive sensor for sensing the touch of a user's finger. The sensor includes an inductive element coupled to a capacitance measurement circuit. The inductive element includes a spring that is gradually opened at one end. This end of the spring is installed under the control panel under a certain external pressure so as to be in contact with the control panel, and the other end of the spring extends a pin to be welded on the circuit board under the spring to connect with the capacit...

Claims

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Application Information

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IPC IPC(8): G06F3/023H01H13/705
Inventor 潘邦延徐迎雪
Owner BSH ELECTRICAL APPLIANCES JIANGSU
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