Hydraulic hinge

Abstract

The utility model relates to a hydraulic hinge, and belongs to the technical field of hydraulic hinges, the hydraulic hinge comprises a hinge main body, the hinge main body comprises a hinge fixed piece, a hinge movable piece and a rotating shaft, a torsional spring is arranged in the rotating shaft, and an extrusion assembly used for adjusting the pre-tightening force of the torsional spring is arranged at the top end in the rotating shaft; the extrusion assembly comprises an extrusion plate, a threaded cylinder, an adjusting screw rod, an extension rod fixedly installed at the top end of the extrusion plate, a top block fixedly installed at the top end of the threaded cylinder, supporting blocks fixedly installed at the left end and the right end of the extension rod, and a rotating structure fixedly installed on the adjusting screw rod. When the hydraulic hinge extrudes a torsion spring, the torsion spring can be effectively prevented from being connected to the outer surface of a threaded cylinder or an extension rod in a sleeving mode, so that the pre-tightening force of the torsion spring can be effectively adjusted, the door closing speed can be conveniently adjusted, the length of the threaded cylinder can be adjusted, and therefore the extrusion range of an extrusion plate to the torsion spring can be enlarged; therefore, the adjusting range of the pre-tightening force of the torsional spring can be effectively increased, and the door closing speed range is increased.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic hinges, in particular to hydraulic hinges. Background Art

[0002] Hinges are the key components that connect doors and windows to frames. Traditional hinges have a simple structure and mainly serve to connect and rotate. With the advancement of technology, hydraulic hinges with buffering functions have gradually appeared on the market. They can provide buffering when doors and windows are closed to avoid violent impact.

[0003] Since the existing hydraulic hinges automatically close the door under the elastic force of the torsion spring when closing the door, but the pre-tightening force of the torsion spring is inconvenient to adjust, resulting in the inconvenience of adjusting the closing speed. A Chinese patent (Announcement No.: CN217897587U) discloses a hydraulic hinge with adjustable locking angle, which can adjust the pre-tightening force of the torsion spring by squeezing the torsion spring through the spring pressure adjusting screw, that is, the closing speed can be adjusted. However, since the diameter of the spring pressure adjusting screw in the above document is smaller than the diameter of the torsion spring, when the spring pressure adjusting screw squeezes the torsion spring, the torsion spring is easily sleeved on the outer surface of the spring pressure adjusting screw, making it inconvenient to squeeze the torsion spring to adjust its pre-tightening force, thereby making it inconvenient to adjust the closing speed. In addition, the length of the spring pressure adjusting screw is limited, resulting in certain limitations in the adjustment range of the torsion spring pre-tightening force. Utility Model Content

[0004] In response to the deficiencies of the prior art, the present application provides a hydraulic hinge, which has the advantages of facilitating the adjustment of the spring preload force, thereby solving the problem of the inconvenience of adjusting the spring preload force.

[0005] To achieve the above-mentioned object, the present application provides the following technical solution: a hydraulic hinge, comprising a hinge body, wherein the hinge body comprises a hinge fixed piece, a hinge movable piece and a rotating shaft, a torsion spring is provided inside the rotating shaft, and an extrusion assembly for adjusting the preload force of the torsion spring is provided at the top end of the rotating shaft;

[0006] The extrusion assembly includes an extrusion plate, a threaded barrel, an adjusting screw, an extension rod fixedly mounted on the top of the extrusion plate, a top block fixedly mounted on the top of the threaded barrel, support blocks fixedly mounted on the left and right ends of the extension rod, and a rotating structure fixedly mounted on the adjusting screw.

[0007] The above technical solution can effectively prevent the torsion spring from being sleeved on the outer surface of the threaded barrel or the extension rod, thereby effectively adjusting the preload force of the torsion spring and facilitating the adjustment of the door closing speed. It can extend the length of the threaded barrel and effectively increase the adjustment range of the torsion spring preload force.

[0008] Furthermore, the threaded barrel is cylindrical with a hollow interior and two ends of the upper end missing. The top end of the extension rod is provided with an extension groove for allowing the adjusting screw to extend into the interior thereof, and the adjusting screw is threadedly connected to the interior of the extension groove.

[0009] The above technical solution is adopted so that the extension rod and the adjusting screw can be located in the threaded barrel. When the adjusting screw is threadedly connected to the extension groove, the adjusting screw can drive the extension rod to move up and down through the extension groove, thereby extending the length of the threaded barrel, which can effectively increase the adjustment range of the torsion spring preload force and increase the adjustment range of the door closing speed.

[0010] Furthermore, both the left and right walls of the inner cavity of the threaded cylinder are provided with sliding grooves for the support blocks to slide on the inner walls.

[0011] By adopting the above technical solution, the extension rod can be prevented from falling out of the threaded barrel by the two support blocks, and the two support blocks can also limit the threaded connection between the adjusting screw and the extension groove of the extension rod, thereby preventing the adjusting screw from driving the extension rod to rotate through the extension groove, causing the adjusting screw to be unable to drive the extension rod to move up and down.

[0012] Furthermore, a through hole is provided at the top end of the rotating shaft for allowing the threaded barrel to pass through the inside thereof, and the threaded barrel is threadedly connected to the inner side of the through hole.

[0013] By adopting the above technical solution, the threaded barrel can move in or out of the rotating shaft through the through hole, so that the threaded barrel can drive the extrusion plate to move up and down in the rotating shaft, so that the extrusion plate can squeeze the torsion spring, and the threaded barrel is threadedly connected to the through hole, so that the threaded barrel can be fixed to the rotating shaft through the through hole, so that both the extension rod and the adjusting screw can be installed on the rotating shaft.

[0014] Furthermore, the rotating structure includes a connecting block fixed to the top of the adjusting screw, a rotating block is fixed to the top of the connecting block, support rods are fixed to both ends of the connecting block, and the rotating structure also includes a circular hole opened at the top of the top block.

[0015] By adopting the above technical solution, when the connecting block drives the adjusting screw to rotate, it can avoid driving the top block to rotate.

[0016] Furthermore, the circular hole corresponds to the top end of the threaded barrel, the circular hole is located inside the top end of the threaded barrel, and the connecting block is rotatably connected to the inside of the circular hole.

[0017] The above technical solution is adopted to prevent the user from driving the rotating block to rotate and contacting the top block, thereby driving the top block to rotate, causing the adjusting screw and the threaded barrel to rotate simultaneously.

[0018] Furthermore, the rotating block is rotatably connected to the top end of the top block, and the diameter of the rotating block is larger than the diameter of the circular hole.

[0019] By adopting the above technical solution, the adjusting screw located in the threaded barrel can be connected to the connecting block through the circular hole, so that the connecting block can rotate with the adjusting screw.

[0020] Furthermore, an annular sliding groove opened on the inner side of the top block is fixedly connected to the inner side of the circular hole, and the two support rods are both located inside the annular sliding groove and are slidably connected thereto.

[0021] By adopting the above technical solution, the connecting block can be stably rotated in the circular hole of the top block, so that the connecting block can be installed in the circular hole of the top block, thereby allowing the adjusting screw to be installed in the threaded barrel through the connecting block.

[0022] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0023] The hydraulic hinge is provided with an extrusion assembly, which can effectively prevent the torsion spring from being sleeved on the outer surface of the threaded barrel or the extension rod when the torsion spring is extruded, thereby effectively adjusting the preload force of the torsion spring and facilitating the adjustment of the door closing speed. The length of the threaded barrel can be adjusted to enhance the extrusion range of the torsion spring by the extrusion plate, thereby effectively enhancing the adjustment range of the torsion spring preload force and the adjustment range of the door closing speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of this application;

[0025] Figure 2 This is a schematic cross-sectional view of the rotating shaft and spring of this application;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the extruded plate and the extension rod of this application;

[0027] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the threaded barrel and the extension rod of this application;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the top block and connecting block of this application.

[0029] In the figure: 1. Hinge body; 11. Hinge fixed piece; 12. Hinge movable piece; 13. Rotating shaft; 2. Torsion spring; 31. Extrusion plate; 32. Extension rod; 33. Threaded barrel; 34. Top block; 35. Adjusting screw; 36. Support block; 37. Connecting block; 38. Rotating block; 39. Support rod; 310. Round hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] See also Figures 1 to 2 The hydraulic hinge in this embodiment includes a hinge body 1, which includes a hinge fixed piece 11, a hinge movable piece 12 and a rotating shaft 13. A torsion spring 2 is provided inside the rotating shaft 13, and an extrusion component for adjusting the preload force of the torsion spring 2 is provided at the top end of the rotating shaft 13.

[0032] See also Figures 1 to 5 The extrusion assembly in this embodiment includes an extrusion plate 31, a threaded barrel 33, an adjusting screw 35, an extension rod 32 fixedly mounted on the top of the extrusion plate 31, a top block 34 fixedly mounted on the top of the threaded barrel 33, support blocks 36 fixedly mounted on the left and right ends of the extension rod 32, and a rotating structure fixedly mounted on the adjusting screw 35.

[0033] Among them, the threaded barrel 33 is cylindrical with a hollow interior and missing both ends of the upper end, so that the extension rod 32 and the adjusting screw 35 can be located in the threaded barrel 33, so that the extension rod 32 can move up and down in the threaded barrel 33, and the adjusting screw 35 can rotate in the threaded barrel 33. The top of the extension rod 32 is provided with an extension groove for the adjusting screw 35 to extend into the interior thereof. The adjusting screw 35 is threadedly connected to the interior of the extension groove, so that the extension rod 32 can move up and down on the outer surface of the adjusting screw 35 through the extension groove, and when the adjusting screw 35 is threadedly connected to the extension groove, the adjusting screw 35 can drive the extension rod 32 to move up and down through the extension groove, thereby extending the length of the threaded barrel 33, which can effectively increase the adjustment range of the preload force of the torsion spring 2.

[0034] At the same time, the left and right walls of the inner cavity of the threaded barrel 33 are provided with sliding grooves for the support blocks 36 to slide on their inner walls, so that when the adjusting screw 35 drives the extension rod 32 to move up and down in the threaded barrel 33, the extension rod 32 can drive the two support blocks 36 to slide in the sliding grooves of the threaded barrel 33, so that the extension rod 32 can be prevented from falling out of the threaded barrel 33 by the two support blocks 36, and the two support blocks 36 can also limit the adjusting screw 35 from being threadedly connected to the extension groove of the extension rod 32, thereby preventing the adjusting screw 35 from driving the extension rod 32 to rotate through the extension groove, thereby causing the adjusting screw 35 to be unable to drive the extension rod 32 to move up and down.

[0035] In addition, a through hole is provided at the top of the rotating shaft 13 for allowing the threaded barrel 33 to pass through the interior thereof. The threaded barrel 33 is threadedly connected to the inner side of the through hole, so that the threaded barrel 33 can move in or out of the rotating shaft 13 through the through hole, so that the threaded barrel 33 can drive the extrusion plate 31 to move up and down in the rotating shaft 13, so that the extrusion plate 31 can squeeze the torsion spring 2, and the threaded barrel 33 is threadedly connected to the through hole, so that the threaded barrel 33 can be fixed to the rotating shaft 13 through the through hole, so that both the extension rod 32 and the adjusting screw 35 can be installed on the rotating shaft 13.

[0036] In addition, the diameter of the extrusion plate 31 is larger than the diameter of the torsion spring 2, and the outer wall of the extrusion plate 31 abuts against the inner wall of the rotating shaft 13, so that when the extrusion plate 31 squeezes the torsion spring 2, it can effectively prevent the torsion spring 2 from being sleeved on the outer surface of the threaded tube 33 or the extension rod 32, thereby effectively adjusting the preload force of the torsion spring 2 and facilitating the adjustment of the door closing speed.

[0037] See also Figure 1 、 Figure 2 and Figure 5 The rotating structure in this embodiment includes a connecting block 37 fixed to the top of the adjusting screw 35, a rotating block 38 is fixed to the top of the connecting block 37, support rods 39 are fixed to the left and right ends of the connecting block 37, and the rotating structure also includes a circular hole 310 opened at the top of the top block 34.

[0038] Secondly, the circular hole 310 corresponds to the top of the threaded barrel 33. The circular hole 310 is located on the inner side of the top of the threaded barrel 33. The connecting block 37 is rotatably connected to the inside of the circular hole 310, so that the adjusting screw 35 located in the threaded barrel 33 can be connected to the connecting block 37 through the circular hole 310, so that the connecting block 37 can rotate with the adjusting screw 35. When the connecting block 37 drives the adjusting screw 35 to rotate, it can avoid the phenomenon that the connecting block 37 drives the threaded barrel 33 to rotate through the top block 34, which makes it inconvenient for the adjusting screw 35 to drive the extension rod 32 to move up and down.

[0039] In addition, the rotating block 38 is rotatably connected to the top of the top block 34. The diameter of the rotating block 38 is larger than the diameter of the circular hole 310, so that the rotating block 38 can be located at the top of the top block 34 and rotate, so that the rotating block 38 and the top block 34 can form a convex block to prevent the user from contacting the top block 34 when driving the rotating block 38 to rotate, thereby driving the top block 34 to rotate.

[0040] In addition, the inner side of the circular hole 310 is fixedly connected to an annular groove opened on the inner side of the top block 34, and the two support rods 39 are both located inside the annular groove and are slidably connected thereto. The two support rods 39 rotate in the annular groove in the circular hole 310 of the top block 34, so that the two support rods 39 can stabilize the connecting block 37, so that the connecting block 37 can rotate firmly in the circular hole 310 of the top block 34, so that the connecting block 37 can be installed in the circular hole 310 of the top block 34, so that the adjusting screw 35 can be installed in the threaded barrel 33 through the connecting block 37.

[0041] It should be noted that the hinge body 1 is commonly known to the public in the prior art, and the connection methods of the hinge fixed piece 11, the hinge movable piece 12, the rotating shaft 13 and the torsion spring 2 are commonly known to the public in the prior art. Therefore, the present utility model does not provide a detailed explanation of its connection method and working principle.

[0042] The working principle of the above embodiment is:

[0043] When in use, when it is necessary to adjust the door closing speed, by rotating the top block 34, the top block 34 drives the threaded cylinder 33 to rotate, so that the threaded cylinder 33 is threadedly connected to the through hole of the rotating shaft 13, so that the threaded cylinder 33 can gradually move into the rotating shaft 13, and the threaded cylinder 33 drives the extrusion plate 31 to move downward, so that the extrusion plate 31 can squeeze the torsion spring 2, so that the preload force of the torsion spring 2 is gradually increased, thereby increasing the door closing force and improving the door closing speed. This can effectively prevent the torsion spring 2 from being sleeved on the outer surface of the threaded cylinder 33 or the extension rod 32, thereby effectively adjusting the preload force of the torsion spring 2 and facilitating the adjustment of the door closing speed.

[0044] Furthermore, if it is necessary to adjust the length of the threaded barrel 33, by rotating the rotating block 38, the rotating block 38 drives the connecting block 37 to rotate, so that the connecting block 37 can drive the two support rods 39 to rotate in the circular hole 310 of the top block 34, which can avoid the top block 34 from rotating when the connecting block 37 rotates, that is, the connecting block 37 can drive the adjusting screw 35 to rotate, so that the adjusting screw 35 can be threadedly connected to the extension groove of the extension rod 32, so that the adjusting screw 35 can drive the extension rod 32 to move downward, so as to enhance the extrusion range of the torsion spring 2 by the extrusion plate 31, thereby effectively enhancing the adjustment range of the preload force of the torsion spring 2 and enhancing the door closing speed range.

Claims

1. A hydraulic hinge comprising a hinge body (1), characterized in that: The hinge body (1) comprises a hinge fixing piece (11), a hinge movable piece (12) and a rotating shaft (13); a torsion spring (2) is provided inside the rotating shaft (13); and an extrusion component for adjusting the preload force of the torsion spring (2) is provided at the top end of the rotating shaft (13); The extrusion assembly includes an extrusion plate (31), a threaded barrel (33), an adjusting screw (35), an extension rod (32) fixedly mounted on the top of the extrusion plate (31), a top block (34) fixedly mounted on the top of the threaded barrel (33), support blocks (36) fixedly mounted on the left and right ends of the extension rod (32), and a rotating structure fixedly mounted on the adjusting screw (35).

2. The hydraulic hinge according to claim 1, characterized in that: The threaded barrel (33) is cylindrical with a hollow interior and two ends of the upper end missing. The top end of the extension rod (32) is provided with an extension groove for allowing the adjustment screw (35) to extend into the interior thereof. The adjustment screw (35) is threadedly connected to the interior of the extension groove.

3. The hydraulic hinge according to claim 1, characterized in that: The left and right walls of the inner cavity of the threaded cylinder (33) are both provided with sliding grooves for the support block (36) to slide on the inner wall.

4. The hydraulic hinge according to claim 1, characterized in that: A through hole is provided at the top end of the rotating shaft (13) for the threaded barrel (33) to penetrate into the interior thereof, and the threaded barrel (33) is threadedly connected to the inner side of the through hole.

5. The hydraulic hinge according to claim 1, characterized in that: The rotating structure includes a connecting block (37) fixed to the top of the adjusting screw (35), a rotating block (38) fixed to the top of the connecting block (37), support rods (39) fixed to the left and right ends of the connecting block (37), and a circular hole (310) opened at the top of the top block (34).

6. The hydraulic hinge according to claim 5, characterized in that: The circular hole (310) corresponds to the top end of the threaded barrel (33), the circular hole (310) is located inside the top end of the threaded barrel (33), and the connecting block (37) is rotatably connected to the inside of the circular hole (310).

7. The hydraulic hinge according to claim 5, characterized in that: The rotating block (38) is rotatably connected to the top end of the top block (34), and the diameter of the rotating block (38) is larger than the diameter of the circular hole (310).

8. The hydraulic hinge according to claim 5, characterized in that: The inner side of the circular hole (310) is fixedly connected to an annular chute opened on the inner side of the top block (34), and the two support rods (39) are both located inside the annular chute and slidably connected thereto.

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