Magnetic spring, a spring and damper assembly, and a vehicle including the spring
First Claim
1. A spring comprising:
- a first part and a second part moveable relative to each other along a longitudinal axis, at least one gap being defined between the first part and the second part, the first part including permanent magnets of a hard magnetic material, the second part including a soft magnetic material, the second part having at least two teeth of soft magnetic material which each have a surface facing an adjacent surface of one of the permanent magnets when the first part is in an aligned position relative to the second part, the at least one gap being defined between the at least two teeth and the corresponding permanent magnets, wherein, when the first part moves from the aligned position relative to the second part along the longitudinal axis, the total area of the facing surfaces of the teeth and of the permanent magnets varies such that the magnetic permeability of the second part in response to a magnetic field of the permanent magnets varies along the longitudinal axis.
1 Assignment
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Accused Products
Abstract
Spring having a first part (1) and a second part (2) moveable relative to each other along a longitudinal axis (L), a gap (3) being provided between the first part (1) and the second part (2), the first part (1) being provided with permanent magnets (4,4′), the second part (2) including soft magnetic material, the second part (2) having a variable permeability along the longitudinal axis (L) thereof for a magnetic field provided by the permanent magnets (4,4′) of the first part (1), wherein the second part (2), for providing the variable permeability for magnetic field, is provided with at least two teeth (5,5′) of soft magnetic material which each face a permanent magnet (4,4′) with a facing surface when the first part (1) is in an aligned position relative to the second part (2), the gap extending between the two teeth and the corresponding permanent magnets, wherein, when the first part is moving out of the aligned position relative to the second part along a longitudinal axis, the total area of the facing surfaces varies.
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Citations
21 Claims
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1. A spring comprising:
a first part and a second part moveable relative to each other along a longitudinal axis, at least one gap being defined between the first part and the second part, the first part including permanent magnets of a hard magnetic material, the second part including a soft magnetic material, the second part having at least two teeth of soft magnetic material which each have a surface facing an adjacent surface of one of the permanent magnets when the first part is in an aligned position relative to the second part, the at least one gap being defined between the at least two teeth and the corresponding permanent magnets, wherein, when the first part moves from the aligned position relative to the second part along the longitudinal axis, the total area of the facing surfaces of the teeth and of the permanent magnets varies such that the magnetic permeability of the second part in response to a magnetic field of the permanent magnets varies along the longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A vehicle comprising:
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a chassis; at least one wheel; and a suspension connecting the wheel with the chassis and having at least one spring, including a first part and a second part moveable relative to each other along a longitudinal axis, at least one gap being defined between the first part and the second part, the first part including permanent magnets of a hard magnetic material, the second part including a soft magnetic material, the second part having at least two teeth of soft magnetic material which each have a surface facing an adjacent surface of one of the permanent magnets when the first part is in an aligned position relative to the second part, the at least one gap being defined between the at least two teeth and the corresponding permanent magnets, wherein, when the first part moves from the aligned position relative to the second part along the longitudinal axis, the total area of the facing surfaces of the teeth and of the permanent magnets varies such that the magnetic permeability of the second part in response to a magnetic field of the permanent magnets varies along the longitudinal axis.
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21. A vehicle comprising
at least a first wheel and a second wheel, an anti roll bar, and anti roll bar spring connected in series with the anti roll bar between the first wheel and the second wheel, the anti roll bar spring including a first part and a second part moveable relative to each other along a longitudinal axis, at least one gap being defined between the first part and the second part, the first part including permanent magnets of a hard magnetic material, the second part including a soft magnetic material, the second part having at least two teeth of soft magnetic material which each have a surface facing an adjacent surface of one of the permanent magnets when the first part is in an aligned position relative to the second part, the at least one gap being defined between the at least two teeth and the corresponding permanent magnets, wherein, when the first part moves from the aligned position relative to the second part along the longitudinal axis, the total area of the facing surfaces of the teeth and of the permanent magnets varies such that the magnetic permeability of the second part in response to a magnetic field of the permanent magnets varies along the longitudinal axis.
Specification