Vibration damping device and vehicle seat provided with the vibration damping device
First Claim
1. A vibration damping device comprising:
- a spindle member through which a shaft portion is inserted, the spindle member being movable along a length direction of the shaft portion;
a first coil spring disposed between the spindle member and a first end portion of the shaft portion in the length direction, the first portion of the shaft portion being inserted through the first coil spring, and the first coil spring urging the spindle member toward a side of a second end portion of the shaft portion in the length direction; and
a second coil spring disposed between the second end portion of the shaft portion and the spindle member, the second end portion of the shaft portion being inserted through the second coil spring, and the second coil spring urging the spindle member toward a side of the first end portion of the shaft portion,wherein,an outer side of the shaft portion is covered with a collar member fabricated of resin, and the collar member being disposed between;
the shaft portion andthe spindle member, the first coil spring and the second coil spring.
1 Assignment
0 Petitions
Accused Products
Abstract
A vibration damping device comprises: a spindle member through which a shaft portion is inserted, the spindle member being movable along a length direction of the shaft portion; a first coil spring disposed between the spindle member and one end portion of the shaft portion in the length direction, the one end portion of the shaft portion being inserted through the first coil spring, and the first coil spring urging the spindle member toward a side of another end portion of the shaft portion in the length direction; and a second coil spring disposed between the another end portion of the shaft portion and the spindle member, the another end portion of the shaft portion being inserted through the second coil spring, and the second coil spring urging the spindle member toward a side of the one end portion of the shaft portion.
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Citations
8 Claims
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1. A vibration damping device comprising:
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a spindle member through which a shaft portion is inserted, the spindle member being movable along a length direction of the shaft portion; a first coil spring disposed between the spindle member and a first end portion of the shaft portion in the length direction, the first portion of the shaft portion being inserted through the first coil spring, and the first coil spring urging the spindle member toward a side of a second end portion of the shaft portion in the length direction; and a second coil spring disposed between the second end portion of the shaft portion and the spindle member, the second end portion of the shaft portion being inserted through the second coil spring, and the second coil spring urging the spindle member toward a side of the first end portion of the shaft portion, wherein, an outer side of the shaft portion is covered with a collar member fabricated of resin, and the collar member being disposed between; the shaft portion and the spindle member, the first coil spring and the second coil spring.
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2. A vehicle seat comprising a seat main body that includes:
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a sitting portion on which a vehicle occupant sits; a seat back that supports an upper body of the vehicle occupant sitting on the sitting portion; a headrest that is provided at an upper side of the seat back and supports a head area of the vehicle occupant; and a vibration damping device comprising; a spindle member through which a shaft portion is inserted, the spindle member being movable along a length direction of the shaft portion, a first coil spring disposed between the spindle member and a first end portion of the shaft portion in the length direction, the first portion of the shaft portion being inserted through the first coil spring, and the first coil spring urging the spindle member toward a side of a second end portion of the shaft portion in the length direction, and a second coil spring disposed between the second end portion of the shaft portion and the spindle member, the second end portion of the shaft portion being inserted through the second coil spring, and the second coil spring urging the spindle member toward a side of the first end portion of the shaft portion, wherein the vibration damping device is provided at the seat back or the headrest. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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Specification