Damper
First Claim
1. A damper comprising:
- an actuator connected to a sprung member side of a vehicle, said actuator having a motion converting mechanism for converting a linear motion into a rotational motion and a motor to which the rotational motion resulting from the conversion by said motion converting mechanism is transmitted;
a hydraulic damper, said hydraulic damper having a cylinder, a piston inserted slidably into said cylinder and defining two pressure chambers within said cylinder, and a rod connected at one end thereof to said piston, the linear motion of said actuator being transmitted to one of said rod and said cylinder, the other of the rod and the cylinder being connected to an unsprung member side of the vehicle;
a spring accommodated within one of said pressure chambers and biasing said hydraulic damper in a damper compressing direction;
a spring accommodated within the other pressure chamber and biasing said hydraulic damper in a damper extending direction;
a first spring bearing member arranged in one of said pressure chambers, said first spring bearing member being connected to one portion of said rod such that said first spring bearing member is rotatable relative to said rod; and
a second spring bearing member arranged in another one of said pressure chambers, said second spring bearing member being connected to another portion of said rod such that said second spring bearing member is rotatable relative to said rod.
2 Assignments
0 Petitions
Accused Products
Abstract
A damper (D1) comprising an actuator A connected to a sprung member (B) side of a vehicle, the actuator having a motion converting mechanism (T) for converting a linear motion into a rotational motion and a motor (M) to which the rotational motion resulting from the conversion by the motion converting mechanism (T) is transmitted; a hydraulic damper (E), the hydraulic damper (E) having a cylinder (C), a piston (P) inserted slidably into the cylinder (C) and defining two pressure chambers within the cylinder (C), and a rod (R) connected at one end thereof to the piston (P), the linear motion of the actuator (A) being transmitted to one of the rod (R) and the cylinder (C), the other of the rod (R) and the cylinder (C) being connected to an unsprung member (W) side of the vehicle; a spring (1) accommodated within one of the two pressure chambers and biasing the hydraulic damper (E) in a damper compressing direction; and a spring (2) accommodated within the other pressure chamber and biasing the hydraulic damper (E) in a damper extending direction.
14 Citations
17 Claims
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1. A damper comprising:
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an actuator connected to a sprung member side of a vehicle, said actuator having a motion converting mechanism for converting a linear motion into a rotational motion and a motor to which the rotational motion resulting from the conversion by said motion converting mechanism is transmitted; a hydraulic damper, said hydraulic damper having a cylinder, a piston inserted slidably into said cylinder and defining two pressure chambers within said cylinder, and a rod connected at one end thereof to said piston, the linear motion of said actuator being transmitted to one of said rod and said cylinder, the other of the rod and the cylinder being connected to an unsprung member side of the vehicle; a spring accommodated within one of said pressure chambers and biasing said hydraulic damper in a damper compressing direction; a spring accommodated within the other pressure chamber and biasing said hydraulic damper in a damper extending direction; a first spring bearing member arranged in one of said pressure chambers, said first spring bearing member being connected to one portion of said rod such that said first spring bearing member is rotatable relative to said rod; and a second spring bearing member arranged in another one of said pressure chambers, said second spring bearing member being connected to another portion of said rod such that said second spring bearing member is rotatable relative to said rod. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A damper comprising:
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an actuator connected to a sprung member side of a vehicle, said actuator having a motion converting mechanism for converting a linear motion into a rotational motion and a motor to which the rotational motion resulting from the conversion by said motion converting mechanism is transmitted, said motion converting mechanism comprising a screw shaft and a ball screw nut, said screw shaft being connected to said motor and said ball screw nut, said actuator further comprising a connecting tube and a second tube, said ball screw nut being non-rotatably connected to an upper end of said second tube, said second tube being connected to said connecting tube, wherein said connecting tube is non-rotatable with respect to said second tube; a hydraulic damper, said hydraulic damper having a cylinder, a piston inserted slidably into said cylinder and defining two pressure chambers within said cylinder, and a rod connected at one end thereof to said piston, said rod being connected at another end thereof to said motion converting mechanism, the linear motion of said actuator being transmitted to one of said rod and said cylinder, the other of the rod and the cylinder being connected to an unsprung member side of the vehicle; a first spring accommodated within a first one of said pressure chambers and biasing said hydraulic damper in a damper compressing direction; a second spring accommodated within a second one of said pressure chambers and biasing said hydraulic damper in a damper extending direction; a first spring bearing member arranged in said first one of said pressure chambers, said first spring bearing member being connected to one portion of said rod such that said first spring bearing member is rotatable relative to said rod; and a second spring bearing member arranged in said second one of said pressure chambers, said second spring bearing member being connected to another portion of said rod such that said second spring bearing member is rotatable relative to said rod. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A damper comprising:
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an actuator connected to a sprung member side of a vehicle, said actuator comprising a motor, a screw shaft, a ball screw nut, a connecting tube and a second tube, said screw shaft being connected to said motor and said ball screw nut, said ball screw nut being non-rotatably connected to an upper end of said second tube, said second tube being connected to said connecting tube, wherein said connecting tube is non-rotatable with respect to said second tube, said screw shaft and said ball screw nut defining a motion converting mechanism for converting a linear motion into a rotational motion, wherein said the rotational motion resulting from the conversion by said motion converting mechanism is transmitted to said motor; a hydraulic damper, said hydraulic damper having a cylinder, a piston and a rod, said cylinder being located at a spaced location from said second tube, said piston being inserted slidably into said cylinder, at least a portion of said cylinder defining two pressure chambers within said cylinder, said rod comprising a first rod end portion and a second rod end portion, said first rod end portion being connected to said piston, said second rod end portion being connected to said second tube, the linear motion of said actuator being transmitted to one of said rod and said cylinder, the other of the rod and the cylinder being connected to an unsprung member side of the vehicle; a first spring accommodated within a first one of said pressure chambers and biasing said hydraulic damper in a damper compressing direction; a second spring accommodated within a second one of said pressure chambers and biasing said hydraulic damper in a damper extending direction; a first spring bearing member arranged in said first one of said pressure chambers, said first spring bearing member being connected to one portion of said rod such that said first spring bearing member is rotatable relative to said rod; and a second spring bearing member arranged in said second one of said pressure chambers, said second spring bearing member being connected to another portion of said rod such that said second spring bearing member is rotatable relative to said rod. - View Dependent Claims (17)
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Specification