Hydraulic hinge

Abstract

The utility model discloses a hydraulic hinge which comprises a convex plate, a concave plate and a hydraulic device, a second rotating body is provided with a pressure adjusting nut, a concentric ejector block and a pressure spring, one end of the pressure spring abuts against the pressure adjusting nut, and the other end of the pressure spring abuts against the concentric ejector block; a rotating pin is arranged in the concentric ejector block, a moving groove with the height gradually changing is formed in the side wall of the first rotating body, and the end of the rotating pin is arranged in the moving groove. The second rotating body is provided with a piston assembly, a pressure reduction spring and an adjusting nut, the adjusting nut is connected with the end of the second rotating body in a screwed mode, the adjusting nut is provided with an adjusting needle, one end of the pressure reduction spring abuts against the concentric ejector block, and the other end of the pressure reduction spring abuts against the piston assembly. The adjusting nut is rotated by a hexagonal key, the piston assembly is driven to move through the adjusting needle, the distance between the piston assembly and the concentric ejector block is adjusted, accordingly, the pressure of the pressure reducing spring is adjusted, the door closing speed is increased when the adjusting force is large, and the door closer has the same function as a door closer.

Description

Technical Field

[0001] The utility model relates to the field of hinges, in particular to a hydraulic hinge. Background Art

[0002] The hydraulic hinge of a door leaf is usually composed of a hinge and a hydraulic device. The hinge is used to connect the door leaf and the door frame, and provides the function of automatically closing the door leaf after it is unfolded. The hydraulic hinge is installed with door leaves of different weights. Door leaves of different weights require different forces. Therefore, it is necessary to adjust the pressure of the return spring in the hydraulic hinge according to the weight of the door leaf. However, the operation of adjusting the pressure of the return spring in the existing hydraulic hinge is extremely inconvenient, which wastes labor and time costs. Utility Model Content

[0003] The utility model solves the problem that the existing hydraulic hinge is inconvenient to operate in adjusting the pressure.

[0004] The technical scheme adopted by the utility model is: a hydraulic hinge, comprising a convex plate, a concave plate and a hydraulic device, the hydraulic device comprising a first rotating body and a second rotating body, the first rotating body is sleeved on the outer side of the second rotating body, one side of the convex plate is connected to the first rotating body, and one side of the concave plate is connected to the second rotating body, which can ensure that the concave and convex plates run in the same center; one end of the second rotating body is provided with a pressure regulating nut, a concentric top block and a pressure spring, one end of the pressure spring abuts against the pressure regulating nut and the other end abuts against the concentric top block; a rotating pin is provided in the concentric top block, a moving groove with a gradually changing height is provided in the side wall of the first rotating body, and the end of the rotating pin is provided in the moving groove; the other end of the second rotating body is provided with a piston assembly, a decompression spring and an adjusting nut, the adjusting nut is threadedly connected to the end of the second rotating body, the adjusting nut is provided with an adjusting needle, one end of the adjusting needle extends into the piston assembly, one end of the decompression spring abuts against the concentric top block and the other end abuts against the piston assembly.

[0005] Furthermore, a ball bearing ring is provided between the first rotating body and the second rotating body.

[0006] Compared with the prior art, the utility model has the following beneficial effects: it only needs to use a hexagonal key to rotate the adjusting nut in a clockwise direction to drive the piston assembly to move through the adjusting needle, and adjust the distance between the piston assembly and the concentric top block, thereby adjusting the size of the pressure of the decompression spring. The greater the adjustment force, the faster the door closing speed will be, and it can have the same function as the door closer. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the connection structure between the convex plate and the concave plate and the hydraulic device of the utility model;

[0008] Figure 2It is a cross-sectional view between the convex plate and the concave plate and the hydraulic device of the utility model;

[0009] Figure 3 It is a cross-sectional view of the hydraulic device of the utility model;

[0010] Figure 4 This is a schematic diagram of adjusting the hydraulic hinge of the utility model through a hexagonal key;

[0011] Figure 5 This is a schematic diagram of the structure of the adjusting nut of the utility model;

[0012] Figure 6 This is a diagram showing the use status of the hydraulic hinge of the utility model when it is installed with a door frame and a door leaf.

[0013] Figure numerals: convex plate 10; concave plate 20; hydraulic device 30; first rotating body 31; second rotating body 32; pressure regulating nut 311; concentric top block 312; pressure spring 313; rotating pin 314; moving groove 301; piston assembly 315; pressure relief spring 316; adjusting nut 317; adjusting needle 318; ball bearing ring 33. DETAILED DESCRIPTION

[0014] like Figures 1 to 6 The hydraulic hinge comprises a convex plate 10, a concave plate 20 and a hydraulic device 30, wherein the hydraulic device 30 comprises a first rotating body 31 and a second rotating body 32, wherein the first rotating body 31 is sleeved on the outer side of the second rotating body 32, wherein one side of the convex plate 10 is connected to the first rotating body 31, and one side of the concave plate 20 is connected to the second rotating body 32, thereby ensuring that the concave and convex plates run in the same center.

[0015] The second rotating body 32 has a pressure regulating nut 311 , a concentric top block 312 and a pressure spring 313 at one end. The pressure spring 313 abuts against the pressure regulating nut 311 at one end and the concentric top block 312 at the other end.

[0016] A rotating pin 314 is disposed in the concentric top block 312 . A moving groove 301 with a gradually changing height is disposed in the side wall of the first rotating body 31 . The end of the rotating pin 314 is disposed in the moving groove 301 .

[0017] The other end of the second rotating body 32 has a piston assembly 315, a pressure relief spring 316 and an adjusting nut 317. The adjusting nut 317 is threadedly connected to the end of the second rotating body 32. The adjusting nut 317 is provided with an adjusting needle 318. One end of the adjusting needle 318 extends into the piston assembly 315. One end of the pressure relief spring 316 abuts against the concentric top block 312 and the other end abuts against the piston assembly 315.

[0018] When in use, first use self-tapping screws to lock and install the convex or concave plate with the door frame and door leaf respectively. After the hydraulic hinges are installed on the door frame and the door leaf, first open and close the door leaf to check whether there is any friction between the door frame and the door leaf and whether it can be locked normally, and then tighten the other screws. When the convex plate 10 and the concave plate 20 are opened or closed, the rotating pin 314 moves up and down along the movable groove 301, and the pressure spring 313 and the decompression spring 316 are squeezed or released by the concentric top block 312, so that when there is no external force between the door leaf and the door frame after expansion, the contracted pressure spring 313 pushes the concentric top block 312 to drive the rotating pin 314 to move to achieve the effect of automatic door closing.

[0019] When the door closing speed needs to be set, it is only necessary to use an Allen key to turn the adjusting nut 317 clockwise to drive the piston assembly 315 to move through the adjusting needle 318, and adjust the distance between the piston assembly 315 and the concentric top block 312, thereby adjusting the pressure of the decompression spring 316. The greater the adjustment force, the faster the door closing speed will be. The adjustment force and speed are preferably such that the door can be automatically closed and locked.

[0020] A ball bearing ring 33 is disposed between the first rotating body 31 and the second rotating body 32 , and the ball bearing ring 33 can ensure that the door frame and the door leaf can run smoothly without resistance.

Claims

1. A hydraulic hinge, characterized in that: The invention comprises a convex plate (10), a concave plate (20) and a hydraulic device (30), wherein the hydraulic device (30) comprises a first rotating body (31) and a second rotating body (32), wherein the first rotating body (31) is sleeved on the outer side of the second rotating body (32), wherein one side of the convex plate (10) is connected to the first rotating body (31), and one side of the concave plate (20) is connected to the second rotating body (32), thereby ensuring that the concave and convex plates run in the same center; one end of the second rotating body (32) is provided with a pressure regulating nut (311), a concentric top block (312) and a pressure spring (313), wherein one end of the pressure spring (313) is in contact with the pressure regulating nut (311) and the other end is in contact with the concentric top block (312); A rotating pin (314) is provided in the concentric top block (312); a moving groove (301) with a gradually changing height is provided in the side wall of the first rotating body (31); the end of the rotating pin (314) is provided in the moving groove (301); the other end of the second rotating body (32) has a piston assembly (315), a pressure relief spring (316) and an adjusting nut (317); the adjusting nut (317) is threadedly connected to the end of the second rotating body (32); the adjusting nut (317) is provided with an adjusting needle (318); one end of the adjusting needle (318) extends into the piston assembly (315); one end of the pressure relief spring (316) abuts against the concentric top block (312) and the other end abuts against the piston assembly (315).

2. The hydraulic hinge according to claim 1, characterized in that: A ball bearing ring (33) is provided between the first rotating body (31) and the second rotating body (32).

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