Vehicle door check
First Claim
Patent Images
1. A door check comprising:
- a door strap for being movably mounted to a vehicle chassis;
a retainer for being mounted to a vehicle door, the door strap being movably attached to the retainer such that a movement of the door strap relative to the retainer is enabled along a longitudinal axis of the door strap, the retainer comprising at least one cylinder with a cylinder axis, a cylinder bottom and an opposed cylinder opening, the at least one cylinder accommodating a piston, the piston being movable along the cylinder axis and being spring loaded by a spring to transmit a force to the door strap thereby creating a frictional force opposite to a movement of the door strap; and
a linear drive adapted to increase a force exerted via the piston to the door strap,wherein the at least one cylinder has a further opening that extends through the cylinder bottom to receive a plunger, wherein the plunger protrudes from an end of a linearly movable armature of the linear drive and wherein the plunger extends through the further opening,wherein a fluid is provided inside the at least one cylinder, the fluid being contained in a chamber formed within the at least one cylinder between the piston and the cylinder bottom,wherein an upper end of the spring directly contacts an inner surface of the cylinder bottom,wherein the spring is positioned in the at least one cylinder between the cylinder bottom and the piston, the spring loading the piston towards the door strap, andwherein an activation of the linear drive to push the plunger toward the piston compresses the fluid inside the chamber of the at least one cylinder to increase the force exerted via the piston to the door strap.
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Accused Products
Abstract
A door check for vehicle doors, e.g. car doors having a door strap for being mounted to the chassis and a retainer for being mounted to the door movably and supporting the door strap relative to the retainer and provides a particular precise control over the door movement if the retainer has a cylinder supporting a piston which is spring loaded against the door strap and if an actuator is configured to augment the pressure in the cylinder upon demand to thereby augment the friction between the piston and the door strap.
9 Citations
11 Claims
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1. A door check comprising:
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a door strap for being movably mounted to a vehicle chassis; a retainer for being mounted to a vehicle door, the door strap being movably attached to the retainer such that a movement of the door strap relative to the retainer is enabled along a longitudinal axis of the door strap, the retainer comprising at least one cylinder with a cylinder axis, a cylinder bottom and an opposed cylinder opening, the at least one cylinder accommodating a piston, the piston being movable along the cylinder axis and being spring loaded by a spring to transmit a force to the door strap thereby creating a frictional force opposite to a movement of the door strap; and a linear drive adapted to increase a force exerted via the piston to the door strap, wherein the at least one cylinder has a further opening that extends through the cylinder bottom to receive a plunger, wherein the plunger protrudes from an end of a linearly movable armature of the linear drive and wherein the plunger extends through the further opening, wherein a fluid is provided inside the at least one cylinder, the fluid being contained in a chamber formed within the at least one cylinder between the piston and the cylinder bottom, wherein an upper end of the spring directly contacts an inner surface of the cylinder bottom, wherein the spring is positioned in the at least one cylinder between the cylinder bottom and the piston, the spring loading the piston towards the door strap, and wherein an activation of the linear drive to push the plunger toward the piston compresses the fluid inside the chamber of the at least one cylinder to increase the force exerted via the piston to the door strap. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A door check comprising:
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a door strap for being movably mounted to a vehicle chassis; a retainer for being mounted to a vehicle door, the door strap being movably attached to the retainer such that a movement of the door strap relative to the retainer is enabled along a longitudinal axis of the door strap, the retainer comprising at least one cylinder with a cylinder axis, a cylinder bottom and an opposed cylinder opening, the at least one cylinder accommodating a piston, the piston being movable along the cylinder axis and being spring loaded by a spring to transmit a force to the door strap thereby creating a frictional force opposite to a movement of the door strap; a linear drive adapted to increase a force exerted via the piston to the door strap, wherein the linear drive comprises a coil and a linearly movable armature, wherein a current through the coil exerts a force on the armature that is transmitted to a plunger and by the plunger to the piston, and the door check further comprising a booster with a magnetic coupling plate, wherein the magnetic coupling plate is positioned at the end of the armature facing away from the piston. - View Dependent Claims (9, 10, 11)
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Specification