Control device for an electrical appliance

• US 8,519,291 B2
• Filed: 10/06/2010
• Issued: 08/27/2013
• Est. Priority Date: 10/07/2009
• Status: Expired due to Fees

• Current Assignee: EGO Elektro-Gerã¤Tebau GmbH (EGO Blanc und Fischer & Company GmbH)
• Original Assignee: EGO Elektro-Gerã¤Tebau GmbH (EGO Blanc und Fischer & Company GmbH)
• Inventors: Kraus, Randolf, Kleinhans, Andreas
• Primary Examiner(s): FRIEDHOFER, MICHAEL A
• Application Number:
  US12/899,099
• Publication Number:
  US 20110079502A1
• Time in Patent Office: 1,056 Days
• Field of Search: 200/5.R, 200/5.A, 200/600, 200/511, 200/512, 200/296, 341/22, 341/33, 341/34, 345/156, 345/157, 345/173, 345/176
• US Class Current: 200/600
• CPC Class Codes: F24C 7/083 on tops, hot plates
• CPC Class Codes: H03K 17/955 using a capacitive detector
• CPC Class Codes: H03K 17/9622 using a plurality of detectors, e.g. keyboard
• CPC Class Codes: H03K 2217/96066 Thumbwheel, potentiometer, scrollbar or slider simulation by touch switch
• CPC Class Codes: H03K 2217/96076 with spring electrode

Abstract

A control device for an electrical appliance has a control panel wherein a plurality of capacitive sensor elements for a capacitive proximity switch are arranged under the control panel and are arranged in a continuous row, in order to form an elongated slider for operation by application of a finger and drawing the finger over them. The sensor elements are all identical and have a rectangular shape, wherein they are each arranged with one of their first sides facing one another and with all of their sides parallel to one another. They are aligned in the same way with respect to the continuous row, wherein the first sides are rotated through an angle of between 46° and 75° to form the row along which the sensor elements are arranged.

Claims

1. A control device for an electrical appliance, comprising:

a control panel; and

a plurality of capacitive sensor elements for a capacitive contract switch or

proximity switch arranged under said control panel, wherein said plurality of capacitive sensor element are arrange in an elongated, continuous row, for operation by application of a finger and drawing said finger over said plurality of capacitive sensor elements,

wherein further said capacitive sensor elements are identical in shape, wherein said shape comprises a rectangular shape with a first side and a second side,

wherein each of said plurality of capacitive sensor elements are arranged with one of said first sides facing one another and are each arranged with all of their said sides parallel to one another, such that said plurality of capacitive sensor elements are aligned in the same way with respect to said continuous row, wherein said first sides are rotated through an angle of between 15° and

90°

to said continuous row along which said sensor elements are arranged,

wherein said sensor elements are rotated through an angle of between 15° and

44°

or between 45° and

80°

, and

wherein said sensor elements are formed by electrically conductive, elastic sensor element bodies, which are placed on a carrier underneath of said control panel, wherein their top is fitted to the underside of the control panel.

2. The control device according to claim 1, wherein said sensor elements are rotated through an angle of between 46°

and 75°

.

3. The control device according to claim 1, wherein said sensor elements have a long side and a short side.

4. The control device according to claim 3, wherein said sides of said sensor elements have a length difference of at least 10%.

5. The control device according to claim 3, wherein said long sides of said sensor elements face one another.

6. The control device according to claim 1, wherein said row along which said sensor elements are arranged in a straight line.

7. The control device according to claim 1, wherein adjacent sensor elements overlap at least partially in a directional component of a longitudinal extent of said row by at least 5% to 20% of their length.

8. The control device according to claim 1, wherein said sensor element bodies have a height which is less than a width and a length of said sensor element body.