DD295044A5 - CONTACT ASSEMBLY, ESPECIALLY FOR ELECTRIC TOGGLE SWITCHES IN MOTOR VEHICLES - Google Patents

Abstract

The invention relates to a contact arrangement, which is primarily suitable for use in electrical toggle switches in motor vehicles. The invention includes a simple solution for a contact arrangement for connecting three fixed contacts by two movably arranged contact bridges for switching two circuits in a working position. This is achieved in the invention by the fact that the bearings and tipping points of the two rigid contact bridges and their arrangement are set so that the contact bridges are successively deflected from their rest position to the working position about their tilting points by the action of a Betetigungsgliedes and each aeuszeren contact connect directly or indirectly to a center contact. toggle switch; Contact; Kontaktbruecke; Center contact; Bearing; Kippunkte; Working position; Circuit; Betaetigungsglied}

Description

For this 1 page drawings

Field of application of the invention

The application of the invention relates to electrical switches, especially electric toggle switches for motor vehicles for switching multiple circuits in a working position.

Characteristic of the known state of the art

The contact arrangements in electrical toggle switches of motor vehicle technology are designed in conventional embodiments such that two fixed contacts are electrically connected by a contact bridge, which is designed as a rocker switch. Thus, only one circuit can be switched in each work position. An example of such contact arrangements with various possible embodiments is shown in DE-OS 2318487.

The simultaneous connection of multiple circuits is possible by a corresponding number of parallel contact arrangements. To bypass parallel contact arrangements and embodiments are known in which the contact bridge has resiliently formed contact tongues which act against fixed contacts and close several circuits. A corresponding solution is described in DE-OS 2031175.

These solutions have the disadvantage that an increased component complexity occurs, larger switch dimensions are required or high demands on the dimensional accuracy and quality of contact-making items must be made.

Object of the invention

The object of the invention is a contact arrangement for electrical toggle switches, which leads to a higher integration density of switching functions, has material economic advantages, requires little installation effort and is characterized by the simple design of their individual parts.

Explanation of the essence of the invention

For the electrical equipment of motor vehicles switches are required for switching several circuits in a working position. There is therefore the task of developing a simple solution for a corresponding contact arrangement in electrical toggle switches. The object is inventively achieved in that three fixed contacts are connected by two tiltably mounted rigid contact bridges. The contact bridges are arranged so that a lower contact bridge is mounted in a center contact and an upper contact bridge in the housing, wherein the upper contact bridge is supported on the lower contact bridge and acted upon by a resilient plunger which is guided in an actuator. The switching of the contact bridges in their working position is effected by the action of the plunger so that the contact bridges are deflected about their tilting points while the lower contact bridge connects the center contact with an outer contact and the upper contact bridge another outer contact with the center contact, the compound the upper contact bridge with the center contact takes place indirectly via the lower contact bridge.

embodiment

The invention will be explained in more detail with reference to an embodiment shown in the drawing. In the accompanying drawing show

Fig. 1: a side view of the contact arrangement in an electrical toggle switch, partly cut and broken, in the rest position

FIG. 2: the FIG. 1 in the working position FIG. 3: a top view of the contact arrangement according to FIG. 1

The rotatably mounted in the housing 1 of the toggle key 2 receives the spring-loaded plunger 3. In the housing bottom 4, the fixed contacts 5 and the fixed center contact 6 are arranged. In the rest position, the lower contact bridge 7 has its stop in the housing base 4 and is tiltably mounted in the fixed center contact 6. The upper contact bridge 8 is in the rest position on the lower contact bridge 7 and is rotatably mounted in the housing 1. The contacts are aligned perpendicular to the plane of movement of the actuator 2.

If the key 2 is actuated in its initial position according to FIG. 1, the plunger 3 on the upper contact bridge 8 is first moved over the tilting point of the lower contact bridge 7. In this case, the jump-like switching of the lower contact bridge 7 takes place in the working position, in which it connects the fixed contact 5 with the center contact 6. At the same time forms over the extension 9 of the lower contact bridge 7 of the tilting point for the upper contact bridge 8, when it exceeds the sudden switching of the upper contact bridge 8 in the working position in which they the fixed contact 5 on the extension 9 of the lower contact bridge 7 with the Center contact 6 connects takes place.

Claims (2)

1. Contact arrangement, in particular in electric toggle switches for motor vehicles, mounted in a housing fixed contacts and movably mounted contact bridges, characterized in that three arranged on a plane contacts by a lower contact bridge 7, the contact in a current-supplying means 6 is mounted, and an upper contact bridge 8, which is mounted in the housing 1, are electrically connected so that both contact bridges are successively deflected by the different arrangement of their tilting points and thereby each close or open a circuit and the tilt point of the lower contact bridge 7 through the current-supplying center contact. 6 and the tilting point of the upper contact bridge 8 is defined by the extension 9 of the lower contact bridge 7. 2. Contact arrangement according to claim 1, characterized in that the deflection of the upper contact bridge 8 is limited by the lower contact bridge 7 or by a contact 5 and the lower contact bridge 7 from the housing bottom 4 or by a contact 5.