Electricity: circuit makers and breakers – Solid contact – Push button operated
Patent
1991-07-19
1993-04-06
Recla, Henry J.
Electricity: circuit makers and breakers
Solid contact
Push button operated
200 6154, 200524, 200345, H01H 1312
Patent
active
051995581
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention is based on an electric push button switch which is in particular to be used as a hazard-warning-signal switch for motor vehicles.
2. Description of the Prior Art
A hazard-warning-signal switch is already known from the German patent 35 55 804. In this electric switch, the slide substantially consists of a first plate extending in the direction of actuation and carrying a movable electric contact and of a second plate that is integrally formed with the first plate, that extends perpendicularly to the direction of motion. The second plate extends across the inside of the push button switch and has beads on two opposite sides of its circumference, which beads are positioned in grooves on the inside of the push button. Due to the beads and grooves, the slide and push button are firmly connected to each other, whereby during assembly the slide has to be press fitted into the push button.
The first plate of the slide glides over a socket carrying the stationary contacts of the known electric switch. Because the second plate of the slide occupies the inside of the push button facing the socket, the known push button switch is relatively bulky.
SUMMARY OF THE INVENTION
The object of the invention is to provide an electric push button switch with a compact construction in which it is possible to assemble the separate parts of the push button switch in a simple manner.
According to the invention, an electric push button switch with a compact construction is achieved by the slide being held at a distance from a first side wall of the push button against an opposite second wall, and with the socket projecting into the push button substantially positioned in the space between the slide and the first side wall of the push button. The socket can thus project into the push button completely past the slide. Thus, also, stationary and movable contacts can be disposed in the interior of the push button so that the electric switch can be constructed in a compact manner.
So as to not have to guide the stationary contacts in form of metal paths running along the outside of the socket, the contacts penetrate the socket and are provided with terminal sections on the side of the socket opposite the slide. Especially the terminal section of at least one of the stationary contacts can also be positioned within the push button. An electric connection is fixed to the terminal section, which electric connection runs between the socket and a side wall of the push button, and thus this terminal section can be connected with the wiring of a motor vehicle in a space saving manner.
In order to avoid short circuits between the terminal sections of the stationary contacts and the cables fastened to them and in order to allow easy assembly, terminal sections of the stationary contacts are arranged in a row on at least one side area of the socket. Preferably a row of terminal sections of the stationary contacts is positioned on two opposite side areas of the socket.
If the slide and the socket lie next to each other to a large extent, a reset spring for the push button and the socket is compressed between the push button and the socket rather than between the slide and the socket. It is especially advantageous to compress the reset spring between the inside of the top of the push button and a facing abutment on the socket.
A guide pin for a helical reset spring projects from the top of the push button into its interior.
The guide pin can be made sufficiently long that the reset spring can be pushed onto it to be held during the assembly. An especially long guide pin is enabled by providing a receiver such as an aperture for receiving the guide pin into it. The guide pin can thus be formed sufficiently long that the helical spring is guided by it along its whole length.
Formed on opposite borders of the socket are walls extending in the direction of actuation of the push button, projecting from the socket, and guiding on side walls of the push button. Furthermore, the sock
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Barrett Glen T.
Lewis J. Gordon
Recla Henry J.
Seitter Robert P.
SWF Auto-Electric GmbH
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