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A wind deflector includes an operating element for a sliding roof system. The wind deflector is movable by means of the operating element between a raised position and a lowered position. The operating element consists of a shape memory alloy so that as a function of its temperature it can assume on

A wind deflector includes an operating element for a sliding roof system. The wind deflector is movable by means of the operating element between a raised position and a lowered position. The operating element consists of a shape memory alloy so that as a function of its temperature it can assume one of a first and second states.

대표청구항 ▼

1. A sliding roof system comprising: a wind deflector movable by an operating element between a raised position and a lowered position; said operating element including a shape memory alloy having a first state and a second state which are a function of a temperature of said shape memory alloy,

1. A sliding roof system comprising: a wind deflector movable by an operating element between a raised position and a lowered position; said operating element including a shape memory alloy having a first state and a second state which are a function of a temperature of said shape memory alloy, and said operating element is a wire which in said first state has a first length and which in said second state has a second length; and a raising spring is provided which biases said wind deflector into said raised position, and wherein said wire pulls said wind deflector from said raised position into said lowered position. 2. A sliding roof system comprising: a wind deflector movable by an operating element between a raised position and a lowered position; and said operating element including a shape memory alloy having a first state and a second state which are a function of a temperature of said shape memory alloy, said operating element is a wire which in said first state has a first length and which in said second state has a second length, and said wire directly engages said wind deflector, is mounted to a supporting rail, and extends along said supporting rail and runs through a deflecting element. 3. A sliding roof system comprising: a wind deflector movable by an operating element between a raised position and a lowered position; and said operating element including a shape memory alloy having a first state and a second state which are a function of a temperature of said shape memory alloy, and said operating element is a wire which in said first state has a first length and which in said second state has a second length, and wherein said wire directly engages said wind deflector. 4. The sliding roof system according to claim 1, wherein a power supply is provided to deliver a heating current which flows through said operating element. 5. The sliding roof system to claim 1, wherein said shape memory alloy is a NiTi alloy. 6. The sliding roof system according to claim 1, wherein said wind deflector is movable against said spring bias with said temperature being constant. 7. The sliding roof system according to claim 1, wherein said wire engages a movable intermediate element and wherein a connecting element is mounted to said intermediate element, said connecting element being connected with said wind deflector. 8. The sliding roof system according to claim 7, wherein said intermediate element is a pivoting lever and said wire engages said pivoting lever at a first radius that is shorter than a second radius where said connecting element engages said pivoting lever. 9. The sliding roof system according to claim 1, wherein an electronic control is provided which controls a temperature of said operating element as a function of a wind noise generated by said sliding roof system. 10. The sliding roof system according to claim 1, wherein an electronic control is provided which controls a temperature of said operating element as a function of a vehicle speed. 11. The sliding roof system according to claim 1, wherein an electronic control is provided which controls a temperature of said operating element as a function of pressure variations in a vehicle interior space. 12. The sliding roof system as recited in claim 1, wherein said wire pulls said wind deflector from said raised position to said lowered position when a transition temperature is reached. 13. The sliding roof system as recited in claim 1, wherein said second length is shorter than said first length. 14. The sliding roof system as recited in claim 1, wherein said wind deflector is in said raised position when said wire has said first length and is in said lowered position when said wire has said second length.