Momentary switch
OwnerYingtien A. Shihinventor
Life of this patent
Estimating the term…
Abstract
A momentary switch includes a base plate, a switch body having an operation cavity at a predetermined location is mounted on the base plate, a top push-button having a first axial hole centrally provided at a bottom portion thereof, a shuttle which is smaller in size than the operation cavity of the switch body is positioned within the operation cavity, a transport rod has a first end inserted in the first axial hole of the top push-button and a second end inserted in a second axial hole positioned a top portion of the shuttle, a spring loop around the transport rod, and four contact plate for transferring an electrical signal. The momentary switch can eliminated the bouncing problems of traditional push-button switch by providing only two terminals instead of four terminals found in the traditional push-button switch.
Claims14
A momentary switch, comprising
- a push-button;
- a shuttle;
- a switch body which has an operation cavity formed at a predetermined position to receive said shuttle therein and an axial passage extended from a top end of said switch body to said operation cavity, and that said shuttle which is smaller in size than said operation cavity of said switch body is positioned within said operation cavity, a bottom end of said axial passage reducing a diameter thereof to just slightly larger than said transport rod to form a shoulder rim;
- a transport rod and a spring looping around said transport rod, wherein said transport rod which is adjustably inserted in said axial passage of said switch body along with said spring has a first end extended upwardly out of said top end of said switch body to connect with said top push-button and a second end extended downwardly into said operation cavity to connect with said shuttle, said spring being extended between said top push-button and said shoulder rim so as to upwardly press said shuttle to remain in an upper normal position towards a top wall of said operation cavity within said operation cavity, and that a height of said operation cavity is larger than a height of said shuttle, so that when a downwardly force is pressed on said top push-button, said shuttle is driven downwardly by said transport rod to a lower position towards a bottom wall of said operation cavity;
- and
- a first, a second, a third, and a fourth contact plate for transferring electrical signals, wherein said first contact plate is affixed on said top wall of said operation cavity of said switch body and said second contact plate is affixed on a top surface of said shuttle, so that when said shuttle is maintained in said upper position within said operation cavity, said first contact plate and said second contact plate are normally in electrically contact, and that said third contact plate is affixed on a bottom surface of said shuttle and said fourth contact plate is affixed on said bottom wall of said operation cavity of said switch body, so that when said shuttle is selectively pressed by said push-button and said transport rod to said lower position, said third contact plate and said fourth contact plate are in electrical contact.
Dependencies are inferred from the claim text.