Switch having a bimetal plate with two legs

• US 20020153990A1
• Filed: 04/19/2001
• Published: 10/24/2002
• Est. Priority Date: 04/19/2001
• Status: Active Grant

• Current Assignee: Tsung-Mou Yu
• Original Assignee: Tsung-Mou Yu
• Inventors: Yu, Tsung-Mou
• Granted Patent: US 6,563,414 B2
• Time in Patent Office: Days
• US Class Current: 337/333
• CPC Class Codes: H01H 71/16 with bimetal element combined with detection of imbalance of two or more currents H01H83/223
• CPC Class Codes: H01H 73/303 with an insulating body insertable between the contacts when released by a bimetal element

Abstract

A switch device includes a switch case having a passage in a top thereof so as to receive a button therein. A non-conductive plate extends laterally from the button. A first terminal plate and a second terminal plate respectively extending from the casing. A first contact point extends from a side of the second terminal plate. A bimetal plate is connected to the first terminal plate and has two legs extending therefrom. A conductive member is connected between the two legs and connected to the second terminal plate when the button is pushed. The plate is located between the conductive member and the second terminal plate when the button jump up and the two legs are deformed away from the second terminal plate.

Claims

1. A switch device comprising:

a switch case having a passage defined through a top of said case and two slots respectively defined in an underside of said case, a button movably received in said passage and a non-conductive plate extending laterally from said button and located in said switch case, a first terminal plate and a second terminal plate respectively engaged with said two slots, and

a bimetal plate having a body and two legs extending from said body, said body connected to said first terminal plate, a conductive member connected between said two legs and said nonconductive plate movably located between said conductive member and said second terminal plate.

2. The device as claimed in claim 1 further comprising a first contact point extending from a side of said second terminal plate and a second contact point extending from a side of said conductive member, said non-conductive plate movably located between said first contact point and said second contact point.

3. The device as claimed in claim 1 further comprising a spring biased between said button and an inner periphery of said passage.

4. The device as claimed in claim 1, wherein said case is composed of a first part and a second part a plurality of recesses defined in a surface of said first part and a plurality of rods extending from said second part, said rods engaged with said recesses.

5. The device as claimed in claim 1 further comprising a slit defined in said first part and said first terminal plate has an end which is engaged with said slit.

6. The device as claimed in claim 4 wherein each of said first terminal plate and said second terminal plate has a connection hole, said first part having two engaging holes defined therein, two rivets respectively extending through said connection holes and engaged with said engaging holes.