TH12801Y - Tailgate lifting device for pickup trucks - Google Patents

Abstract

The tailgate lift assist device for pickup trucks consists of a base with a threaded rod attached to a polygonal rod; a connector with two opposing ends (one end and two end); a device to attach the connector to the polygonal rod; a device to attach the connector to the slot for the torsion spring rod; the torsion spring rod; a friction guard to prevent the torsion spring rod from rubbing against the bottom wall of the tailgate; another friction guard to prevent the torsion spring rod from rubbing against the tailgate opening; and a device to transmit force from the torsion spring rod to the tailgate. The tailgate lift assist device prevents the tailgate from rolling down forcefully when opening and reduces the effort required by the user when lifting and closing the tailgate.

Claims (10)

1. Tailgate Lifting Device for Pickup Trucks Pickup trucks have a bed with a tailgate. The tailgate can be rotated open and closed. On the side wall of the bed there are threaded holes, which are located at the pivot point of the tailgate. The tailgate has a specific shape and consists of a base (30) which is made up of a threaded rod (36) attached to a polygonal rod (37). The threaded rod (36) is fastened to the threaded hole on the side wall of the bed. The polygonal rod (37) is inserted into the first hole (39) of the connector (31). The connector (31) has two opposite ends, one end and the other end. The one end has the first hole (39), whose cross-section is shaped to fit the cross-section of the polygonal rod (37). The two end has the second hole (40), whose cross-section is shaped to fit the other end. With the cross-section of the insertion part (49), the connector is attached to the polygonal bar (37), the connector is attached to the insertion part (49), the torsion spring rod (32) which consists of the part attached to the connector (43), the part bent toward the end cap (44), the part that extends toward the hole in the end cap (45), the part that extends through the hole in the end cap (46), the part pointing toward the wall of the end cap (47), and the part parallel to the wall of the end cap (48), with the part attached to the connector (43) having an insertion part (49) at the end for insertion into the second hole (40) of the connector (31), a friction guard to prevent the torsion spring rod from rubbing against the bottom wall of the end cap, a friction guard to prevent the torsion spring rod from rubbing against the hole in the end cap, and a force transmission device from the torsion spring rod to the end cap. 2. A tailgate lift device for a pickup truck, according to claim 1, in which the cross-section of the polygonal bar (37) and the cross-section of the first hole (39) are hexagonal in shape. 3. The tailgate lifting device of the pickup truck, according to claim 2, also consists of a threaded hole (41) located adjacent to the first hole (39), a device to fasten the connector to the polygonal bar, consisting of a set screw (33), the set screw (33) is screwed through the threaded hole (41) until it makes contact and applies force to the polygonal bar (37). 4. A tailgate lift device for a pickup truck, according to claim 1, in which the cross-section of the second hole (40) and the cross-section of the insertion part (49) are cut circles, in which the cut part of the second hole (40) is a straight flat surface (55) and the cut part of the insertion part (49) is a straight flat surface (56). 5. The tailgate lift device of the pickup truck, in accordance with claim 4, also consists of a threaded hole (42) located adjacent to the second hole (40). The device that fastens the connector to the insertion part consists of a grub screw (34). The grub screw (34) is screwed through the threaded hole (42) until it makes contact with and applies force to the straight, flat surface (56) of the insertion part (49). 6. The tailgate lift assist device of a pickup truck, in accordance with claim 1, which is a friction device to prevent the torsion spring rod from rubbing against the underside of the tailgate, consists of two cylindrical tubes (58) made of flexible material, which have holes (59) along their length. The cylindrical tubes (58) are fitted over the extension portion that passes through the tailgate hole (45) of the torsion spring rod (32). The first cylindrical tube (58) is positioned near the extension portion that passes through the tailgate hole (44). The second cylindrical tube (58) is positioned near the extension portion that passes through the tailgate hole (46). 7. Tailgate lift assist device for pickup trucks, in accordance with claim 1, which is a friction-preventing device to prevent the torsion spring rod from rubbing against the hole in the tailgate, consisting of a cylindrical sleeve (62) made of a rigid material to fit into the hole (54) and has a hole (63) to fit over the part that passes through the hole in the tailgate (46). 8. A tailgate lift device for a pickup truck, according to claim 1, which transmits force from the torsion spring rod to the tailgate, consists of a cylindrical sleeve (35) and a force distribution plate (60) attached with double-sided tape (61). The cylindrical sleeve (35) has a hole (57) for fitting onto the section parallel to the tailgate wall (48). The force distribution plate (60) is attached to the tailgate wall with double-sided tape (61). The cylindrical sleeve (35) is positioned midway between the section parallel to the tailgate wall (48) and the force distribution plate (60). 9. A tailgate lift device for a pickup truck, according to claim 1, whose base (30) is made of a single piece of machined and threaded metal. 10. Pickup truck tailgate lift assist device, in accordance with claim 1, in which the torsion spring rod (32) is made of a single piece of solid spring steel with a circular cross-section, which is machined and bent.