The present disclosure is directed to overhead doors and overhead door operation. More specifically, the present disclosure relates to a direct drive counter balancing system for operating overhead doors. In some examples, the direct drive counter balancing system of the present disclosure is for overhead door systems used in segmented door arrangements for box trucks.

A vehicle door unit comprises a rotating lever supported rotatably about a first shaft at a first end, a door mounting coupled rotatably about a second shaft to a second end of the rotating lever, a door attached to the door mounting and being configured to cover an opening in a vehicle and to close off a vehicle interior, and a drive unit configured to rotate the rotating lever about the first shaft between a closed position and an open position. The rotating lever is configured to move the second shaft, on a movement from the closed position to the open position, on a circular path, due to which the door mounting is first moved into the vehicle interior and, on further rotation of the rotating lever, out of the vehicle interior.

A wire rope system for supporting an opening movement and a closing movement of a tailgate of a vehicle or a trailer, the wire rope system comprises: a guide cylinder configured to be arranged within a side board wall or within a tailgate of a vehicle or a trailer, and comprising a front end portion with an opening and a back end portion; a compression spring arranged within the guide cylinder, and having a front end and a back end; and a plunger element configured to be movable axially within the guide cylinder; the compression spring being attached with its front end to the front end portion of the guide cylinder and being attached with its back end to the plunger element; a wire rope extending through the opening in the front end portion of the guide cylinder, and comprising a back end attached to the plunger element and a front end to be attached to a tailgate or a side board wall of a vehicle or a trailer; wherein the plunger element comprises a slide membrane element configured such that its circumferential edge abuts to the inner wall of the guide cylinder, thus separating the inner space of the guide cylinder into a back air chamber between the rear side of the slide membrane element and the back end portion of the guide cylinder, and into a front air chamber between the front side of the slide membrane element and the front end portion of the guide cylinder; wherein an air flow regulating opening is arranged within the back air chamber and connects the back air chamber to the exterior side of the guide cylinder; and wherein the slide membrane element is configured such that during movement towards the front end portion of the guide cylinder air flow from the front air chamber between its circumferential edge and the inner wall of the guide cylinder to the back air chamber is blocked or reduced, thus exerting a damping function to the movement of the wire rope and reducing the opening speed of the tailgate.

An opening and closing device includes a housing having a top surface including an opening portion, a cover configured to open and close the opening portion and provided to the housing to be pivotable about a pivot shaft extending in a first direction, and a gas spring unit configured to extend and contract with the pivoting of the cover and including a cover-side end portion configured to be fitted to the cover and a housing-side end portion configured to be fitted to the housing, wherein the housing further includes a guide portion configured to restrict a movement range of the gas spring unit by bringing a housing-side shaft into contact with the guide portion and guide the housing-side shaft to a position where the housing-side shaft fits to a housing-side fitting portion in inserting the housing-side end portion of the gas spring unit into the housing from the opening portion.

A vehicle hood hinge assembly includes a first bracket and a second bracket. The first bracket has a base flange and a side flange that extends upward from the base flange. The side flange has a rear end with a pivot shaft defining a main pivot axis. A front end of the side flange is spaced apart from the base flange and includes a pivot mount. The second bracket has a forward end and a rearward end. The rearward end is connected to the pivot shaft of the side flange of the first bracket for pivoting movement. A linear piston device is fixed to the pivot mount of the side flange of the first bracket. The second bracket is shaped and dimensioned such that during pivoting movements the linear piston has a non-contacting relationship with the second bracket.

An actuation system for facilitating opening and closing of a closure panel of a vehicle via a hinge, the actuation system comprising: a pop up safety system mounted to a body of the vehicle adjacent to the hinge, the pop up safety system including a bracket connected to the closure panel; and a coupling mechanism coupling the hinge to the body in order to facilitate moving the closure panel from a closed hinge position to an open hinge position, such that the bracket is also connected to the coupling mechanism; wherein when the pop up safety system is operated, the bracket is decoupled from the coupling mechanism in order to facilitate movement of the closure panel away from the coupling mechanism.

An electric tailgate strut for automobiles includes telescopic rod, gas spring, nut and driving unit. Telescopic rod includes outer tube and inner tube, wherein the outer tube can move along the axial direction of inner tube. Gas spring is arranged inside the telescopic rod and is included of thread tube, piston and piston rod, wherein distance between piston rod and inner tube remains constant, wherein piston is located at the free end of piston rod and in the sliding seat with inner wall of thread tube, wherein seal guide assembly is provided between piston rod and thread tube. Driving unit serves to drive thread tube in the rotation. Thread tube is driven to rotate by motor, so that outer tube can move along axial direction of inner tube to achieve rise or fall of strut. Thread tube itself, piston rod and piston form a gas spring.

An electric tailgate strut includes telescopic rod, gas spring, driving unit and tailgate connection assembly. Telescopic rod comprises outer tube and inner tube, wherein the outer tube can move along the axial direction of inner tube. Gas spring is arranged inside telescopic rod and includes thread tube with thread on inner wall, piston and piston rod. Driving unit is fixedly arranged in the outer tube and serves to drive piston rod in the rotation so that piston rod drives outer tube to move along axial direction of inner tube. Tailgate connection assembly is located at both ends of telescopic rod and is used for connection between telescopic rod and tailgate. Piston rod is driven to rotate by motor, so that outer tube can move along axial direction of inner tube to achieve rise or fall of strut. Thread tube itself, piston rod and piston form a gas spring.

A hood assembly for a work vehicle includes a hood and a hood pivot joint configured to pivotally couple the hood to a chassis of the work vehicle. The hood pivot joint is configured to enable the hood to rotate between an open position and a closed position. The hood assembly also includes a lift mechanism having a linkage assembly pivotally coupled to the hood and configured to pivotally couple to the chassis of the work vehicle. In addition, the lift mechanism includes a linear actuator coupled to the linkage assembly. The linear actuator is configured to drive the linkage assembly to rotate the hood between the open and closed positions.

A supporting rod assembly, which is applicable to a vehicle door of a vehicle, and includes a first supporting rod and a second supporting rod. A second end of the first supporting rod is configured to be hinged to the vehicle door, and a first end of the first supporting rod is configured to be hinged to a vehicle body. A second end of the second supporting rod is configured to be hinged to the vehicle door, and a first end of the second supporting rod is configured to be hinged to the vehicle body. At least one of the first supporting rod and the second supporting rod is an electric supporting rod.