Switch and switch device for a motor vehicle
First Claim
1. An electrical switch comprising:
- a first contact system comprising at least one fixed contact and one switching contact, the first contact system being designed for switching a high power current as well as a low signal current; and
a plurality of electrical connections which lead to the first contact system, wherein the electrical connections comprise first electrical connections for application of a first voltage in the form of a power voltage for a high power current, and second electrical connections for application of a second voltage in the form of a signal voltage for a low signal current, the first electrical connections and the second electrical connections being electrically connected to only the one first contact system, in that, one connection can carry at least one of the power current via the first electrical connections and the signal current via the second electrical connections to the contact system.
1 Assignment
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Accused Products
Abstract
The invention relates to an electrical switch, in particular for a motor vehicle. The switch has a housing in which a contact system is located. Electrical connections which are located on the housing lead to the contact system, of which electrical connections first electrical connections are used to apply a power voltage for a high power current, and second electrical connections are used to apply a signal voltage for a low signal current. Optionally and if required, one connection can carry the power current via the first electrical connections and/or the signal current via the second electrical connections. Electrical switches designed in such a way are particularly suitable for arrangement in a control panel for a motor vehicle.
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Citations
15 Claims
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1. An electrical switch comprising:
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a first contact system comprising at least one fixed contact and one switching contact, the first contact system being designed for switching a high power current as well as a low signal current; and
a plurality of electrical connections which lead to the first contact system, wherein the electrical connections comprise first electrical connections for application of a first voltage in the form of a power voltage for a high power current, and second electrical connections for application of a second voltage in the form of a signal voltage for a low signal current, the first electrical connections and the second electrical connections being electrically connected to only the one first contact system, in that, one connection can carry at least one of the power current via the first electrical connections and the signal current via the second electrical connections to the contact system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
a control circuit;
a plurality of signal lines from the control circuit to the switches for transmitting signals between the control circuit and the switches; and
a storage device used to store an assignment, the storage device assigns each individual switch one function, from a set of functions, which can be switched by the respective switch and/or can be initiated by the control circuit.
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10. The switch arrangement according to claim 9, wherein, before at least one of the control panel and the motor vehicle is activated by a user, the control panel can be initialized by storing the assignment, the assignment being an assignment table, in the storage device, in that, the control circuit contains a processor, with the operation of the control circuit being monitored by means of an external window watchdog module, in that, furthermore, the control circuit is provided with a voltage regulator assembly which is designed to satisfy the requirements in the commercial vehicle field, and in that, the control circuit is coupled to a bus the bus being a CAN bus, by means of a high-speed transmission module and, with an upstream suppression inductor.
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11. The switch arrangement according to claim 10, wherein, the switching state of each of the plurality of switches can be determined by the control circuit on the basis of the signals transmitted on the signal lines by the control circuit reading the signal lines using a multiplexing method via analog/digital converters, in that, the assignment stored in the storage device is used to check an operated switch in the control circuit to determine which function has been selected, in that, a bus signal which codes the respective function, the bus signal being a CAN bus signal, can be generated in the control circuit, and in that, furthermore, the supply voltage for the electronic components, the electronic components being the control circuit, can be switched to a sleep mode, with a reduced current draw, in order to minimize the current consumption, and the signal voltage supply for the switches can be switched off.
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12. The switch arrangement according to claim 11, wherein at least one switch has at least one of function and symbol lighting, in that, the assignment of the function and/or symbol lighting to the respective switch is stored in the storage device, in that, furthermore, the at least one of function and symbol lighting can be actuated by the control circuit via associated drivers by means of shift register modules with integrated drivers, and in that the at least one of function and symbol lighting can be dimmed, as required, by means of pulse-width modulation, in which case the dimming can be initiated by the control circuit on the basis of a bus signal.
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13. The switch arrangement according to claim 9, wherein the switch arrangement comprises a plurality of control panels which are independent of one another and are each in the form of a bus node, the bus node being a CAN node, in that, each control panel is initialized separately, using an assignment table, in that, the control panels are connected to a bus line, and in that, the information relating to the switching states of the switches arranged in the respective control panel is transmitted directly from the respective control panel to the bus line.
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14. The switch arrangement according to claim 9, wherein the switch arrangement comprises a plurality of control panels which are each in the form of a bus node, each bus node being a CAN node, with one control panel being in the form of an independent master bus node and the other control panels being in the form of slave bus nodes which are dependent on the master bus node and have only basic functions of a bus node, in that, only the master bus node is initialized using the assignment table for all the control panels, in that, the slave bus nodes transmit the information relating to the switching states of the switches arranged in the respective control panel via the bus line to the master bus node without knowing the function of said information, and in that, the master bus node uses the assignment table to convert the information received from the slave bus nodes into bus signals, and then transmits these bus signals to the bus line.
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15. The switch arrangement according to claim 9, wherein the switch arrangement comprises a plurality of control panels, with one control panel being in the form of an independent master bus node, the master bus node being a CAN node, and the other control panels being in the form of slave controllers which are dependent on the master bus node, in that, the control panels each have a serial interface and are connected to the master bus node by means of a serial data line and via the serial interfaces, in that, only the master bus node is initialized using the assignment table for all the control panels, in that, the slave controllers transmit the information relating to the switching states of the switches arranged in the respective control panel via the serial interface and the serial data line to the master bus node without knowing the function of this information, and in that, the master bus node converts the information received from the slave controllers into bus signals using the assignment table, and then transmits these bus signals to the bus line.
Specification