TH12239U - Self-reversing spring-loaded hinge. - Google Patents

Abstract

A self-returning spring hinge consists of a bottom base, a first hinge plate sleeve, a second hinge plate sleeve, an upper boot, and a long screw that runs the entire length from the upper boot to the bottom base. An inner sleeve, a hollow cylindrical rod with a diameter matching the inner diameter of the first hinge plate sleeve, houses the spring rod inside, which is positioned on the socket. The lower end of the spring rod engages with a vertical groove in the support shoulder. The first and second hinge plate sleeves fit over the inner sleeve. The top of the upper boot has several evenly spaced adjustment holes. These adjustment holes allow for adjusting the spring's flexibility by rotating two opposing holes with a locking device to achieve the desired spring tension. The side of the second hinge plate sleeve is drilled with holes for securing locking screws to lock the hinge in place between the upper boot and the socket. Fits into the second hinge plate sleeve.

Claims (1)

1. The self-returning spring hinge consists of a bottom base (1) which is a hollow cylindrical rod with a vertical through hole in the center, where the center top of the bottom base (1) is a socket (4) with a diameter smaller than the diameter of the bottom base (1), and on top of the socket (4) is a shoulder (6) with at least one vertical groove (7) for the attachment of the lower end of the spring rod (8), on one side of the bottom base (1) is drilled with a routing hole (2) for the fastening of a screw (3), and a first hinge sleeve (9) which is placed on the top edge of the bottom base (1), which is a hollow cylindrical rod with a diameter corresponding to the diameter of the bottom base (1). The diameter of the bottom base (1), where the side of the first hinge plate sleeve (9) is welded to the first hinge plate (11), where the body of the first hinge plate (11) has several through holes (12) for fastening with screws. A ridge (5) protrudes from the side wall of the socket (4), where the length of the ridge (5) corresponds to the lateral distance between the bottom base (1) and the socket (4), where the bottom edge of the first hinge plate sleeve (9) is grooved (10) for hooking onto the ridge (5) of the socket (4) to lock the first hinge plate sleeve (9) in place. An inner sleeve (13) is a hollow cylindrical rod with a corresponding diameter. With the inner diameter of the first hinge sleeve (9) and the inner area of the inner sleeve (13), a spring rod (8) is inserted inside the inner sleeve (13) and is positioned on the socket (4), with the lower end of the spring rod (8) fitting into the vertical groove (7) of the shoulder (6), on which the first hinge sleeve (9) and the second hinge sleeve (14) fit over the inner sleeve (13). The second hinge sleeve (14) is a hollow cylindrical rod with a diameter corresponding to the diameter of the first hinge sleeve (9), with the sides of the sleeve The second hinge plate (14) is welded to the second hinge plate (15), to which the body of the second hinge plate (14) is fitted over by a top boot (17). The top boot (17) is a cylindrical rod with a vertical hole through the center, and the lower center of the top boot (17) is a socket (19) with a smaller diameter than the size. The diameter of the top boot (17) and the bottom of the socket (19) form a receiving shoulder (20) with at least one vertical groove (21) for the attachment of the top end of the spring rod (8). A long screw (22) is inserted lengthwise from the top boot (17) to the bottom base (1), and is secured by a fastening screw (3) that is threaded through the fastening hole (2) of the bottom base (1) so that the bottom base (1), the first hinge sleeve (9), the second hinge sleeve (14) and the top boot (17) are fastened together, notably with the top perimeter of the top boot (17) having a number of equally spaced slots (18). The adjustment hole (18) helps to adjust the flexibility of the spring bar (8) by turning the two opposing holes (18) with a locking device (100) to twist the spring base (8) to the desired level of flexibility of the spring bar (8). The side of the second hinge sleeve (14) is drilled with a securing hole (23) to accommodate the securing screw (24) for locking the position between the socket (19) of the upper boot (17) and the second hinge sleeve (14).