Functional tube structure of a hinge

Abstract

The utility model discloses a hinge's function pipe structure, including cylinder sleeve, piston, main core shaft, compression spring, installation shaft, connecting pin shaft and mechanical damping device, the piston cover is established in the cylinder sleeve, and one end of main core shaft is connected with the piston through connecting pin shaft, and the other end projects cylinder sleeve, and the both ends of installation shaft are through piston after, and fixed on the cylinder sleeve, and compression spring cover is established on main core shaft, and the one side of piston is first accommodating cavity, and the other side is second accommodating cavity, and main core shaft is located in first accommodating cavity, and mechanical damping device is located in second accommodating cavity, and mechanical damping device and piston abut. Be equipped with mechanical damping device in second accommodating cavity therefore, provide buffer damping to the movement of piston through mechanical damping device, and the movement speed of piston plays the role of deceleration, replaces the hydraulic buffer device of existing, and need not add hydraulic oil in the hinge, and it is favorable for reducing the cost of whole hinge.

Description

Technical Field

[0001] This utility model relates to an important component of a hinge, and in particular to a functional tube structure for a hinge. Background Technology

[0002] Currently, hinges are widely used as hinge components for building doors and windows. To buffer the closing speed of doors and windows and improve safety, many existing hinges are hydraulic hinges. The closing speed is adjusted by controlling the flow rate of hydraulic oil in the oil chambers on both sides of the piston. For example, application number 202422530083.7 discloses a structure of the hydraulic pipe for a concealed three-dimensional hydraulic hinge assembly, where the flow rate of hydraulic oil on both sides of the piston is controlled by adjusting the oil needle. This type of hinge requires the injection of hydraulic oil during use, making it unsuitable for hinges without hydraulic oil. Summary of the Invention

[0003] The purpose of this invention is to provide a hinge functional tube structure that can solve at least one of the above problems.

[0004] According to one aspect of the present invention, a functional tube structure for a hinge is provided, comprising a cylinder liner, a piston, a main spindle, a compression spring, a mounting shaft, a connecting pin, and a mechanical damping device. The piston is sleeved inside the cylinder liner. One end of the main spindle is connected to the piston via the connecting pin, and the other end extends out of the cylinder liner. Both ends of the mounting shaft pass through the piston and are fixed to the cylinder liner. The compression spring is sleeved on the main spindle. One side of the piston is a first accommodating cavity, and the other side is a second accommodating cavity. The main spindle is located in the first accommodating cavity, and the mechanical damping device is located in the second accommodating cavity, abutting against the piston.

[0005] The beneficial effects of this utility model are: by providing a mechanical damping device in the second accommodating cavity, the movement of the piston is buffered and damped by the mechanical damping device, which slows down the movement speed of the piston, replacing the existing hydraulic buffer device. There is no need to add hydraulic oil to the hinge, which helps to reduce the cost of the entire hinge.

[0006] In some embodiments, the mechanical damping device includes a buffer spring, one end of which abuts against the piston. Thus, the buffer spring, through its rebound force, acts on the piston, slowing its movement and achieving a door-closing buffering effect.

[0007] In some embodiments, the mechanical damping device includes a pneumatic damping tube, the cylinder of which is fixed within a second accommodating cavity, and the piston rod of which abuts against a piston. Thus, by providing damping to the piston through the pneumatic damping tube, the piston's movement speed can be slowed down, thereby buffering the closing of the door.

[0008] In some embodiments, the hinge's functional tube structure further includes a cap, which is fitted and fixed within the second accommodating cavity, and the mechanical damping device abuts against the cap. Thus, by providing a cap, the limiting installation of the mechanical damping device is facilitated.

[0009] In some implementations, the outer diameter of the buffer spring is smaller than that of the compression spring. This ensures that the compression spring can push the piston towards the buffer spring side, guaranteeing the proper closure of the door and window.

[0010] In some embodiments, the cylinder liner includes a first sleeve and a second sleeve. One end of the second sleeve is fitted inside the first sleeve. The second sleeve has a first mounting hole and a second mounting hole, the diameter of the second mounting hole being smaller than the diameter of the first mounting hole. The piston is located in the first mounting hole, and the mechanical damping device is fixed in the second mounting hole. Thus, the first and second sleeves facilitate the installation of various structures within the cylinder liner, and the second mounting hole facilitates the installation of the mechanical damping device.

[0011] In some embodiments, the piston is provided with a helical groove and a vertical groove. The vertical groove is arranged along the length of the main spindle. The two ends of the mounting shaft pass through the helical groove and are fixed to the cylinder liner. The connecting pin is fixed to one end of the main spindle and cooperates with the vertical groove. Thus, under the guidance of the helical groove, the mounting shaft can make the piston rotate accordingly along the direction of the helical groove when it moves, achieving the effect of easy opening and powerful closing.

[0012] In some embodiments, the hinge's functional tube structure also includes a needle roller bearing. The outer side of the second sleeve has an mounting step, and the needle roller bearing is fitted onto the second sleeve and abuts against the mounting step. Thus, the needle roller bearing facilitates the installation of the corresponding structure on the cylinder liner. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the functional tube structure of the hinge of this utility model.

[0014] Figure 2 This is a cross-sectional structural schematic diagram of one embodiment of the functional tube structure of the hinge of this utility model.

[0015] Figure 3 This is a cross-sectional structural diagram of another embodiment of the hinge functional tube structure of this utility model.

[0016] Figure 4 yes Figure 3 A schematic diagram of the explosion structure.

[0017] Figure 5 yes Figure 3 Schematic diagram of the structure inside the cylinder liner. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] Reference Figures 1-5 The hinge's functional tube structure includes a cylinder liner 1, a piston 2, a main spindle 3, a compression spring 4, a mounting shaft 5, a connecting pin 6, and a mechanical damping device 7. The piston 2 is fitted inside the cylinder liner 1. One end of the main spindle 3 is connected to the piston 2 via the connecting pin 6, and the other end extends out of the cylinder liner 1. Both ends of the mounting shaft 5 pass through the piston 2 and are fixed to the cylinder liner 1. The compression spring 4 is fitted onto the main spindle 3. One side of the piston 2 is a first receiving cavity 11, and the other side is a second receiving cavity 12. The main spindle 3 is located in the first receiving cavity 11, and the mechanical damping device 7 is located in the second receiving cavity 12, abutting against the piston 2.

[0020] The functional tube structure of this invention is installed in the hinge. After installation, it can be connected to the door leaf. When external force is applied to the door leaf, it drives the hinge to rotate, thereby driving the main spindle 3 to rotate. When the door leaf is opened, the piston 2 is connected via the connecting pin 6, and the main spindle 3 drives the piston to rotate. When the piston rotates, it can move relative to the main spindle 3, thereby further compressing the compression spring 4.

[0021] like Figure 2 As shown, in one embodiment, the mechanical damping device 7 includes a buffer spring 71, one end of which abuts against the piston 2.

[0022] In this embodiment, when the door is closed, the compression spring 4 rebounds, pushing the piston 2 toward the buffer spring 71; as the door gradually closes, the buffer spring 71 is gradually compressed, and the degree of compression increases. At this time, the rebound force of the buffer spring 71 acts on the piston 2, providing damping force for the movement of the piston 2, slowing down the movement speed of the piston 2, and achieving the effect of door closing buffer.

[0023] like Figure 3 As shown in Figure 5, in another embodiment, the mechanical damping device 7 includes a pneumatic damping tube 72. The cylinder of the pneumatic damping tube 72 is fixed inside the second accommodating cavity 12, and the piston rod of the pneumatic damping tube 72 abuts against the piston 2. The pneumatic damping tube 72 is prior art, therefore its specific structure will not be described in detail. The pneumatic tube 72 uses air pressure to dampen the piston, slowing down the piston's movement speed, thereby buffering the closing of the door.

[0024] In this embodiment, when the door is closed, the compression spring 4 rebounds, pushing the piston 2 toward the buffer spring 71; as the door gradually closes, the piston rod of the pneumatic damping tube 72 acts on the piston 2, providing damping force for the movement of the piston 2, slowing down the movement speed of the piston 2, and achieving the effect of door closing buffer.

[0025] The functional tube structure of this hinge also includes a cap 8, which is sleeved and fixed inside the second accommodating cavity 12, and the mechanical damping device 7 abuts against the cap 8. The cap 8 is a screw structure, fixed to the inner wall of the second accommodating cavity 12 by threads.

[0026] The outer diameter of the buffer spring 71 is smaller than that of the compression spring 4. Therefore, it is convenient for the compression spring 4 to smoothly push the piston 2 toward the buffer spring 71.

[0027] The cylinder liner 1 includes a first sleeve 13 and a second sleeve 14. One end of the second sleeve 14 is fitted inside the first sleeve 13. The second sleeve 14 has a first mounting hole 141 and a second mounting hole 142. The diameter of the second mounting hole 142 is smaller than the diameter of the first mounting hole 141. The piston 2 is located inside the first mounting hole 141, and the mechanical damping device 7 is fixed inside the second mounting hole 142.

[0028] The second sleeve 14 has an external thread at one end, and the corresponding inner wall of the first sleeve 13 has an internal thread. One end of the second sleeve 14 is inserted into the first sleeve 13, and the two are threaded together to facilitate their fixation, forming the cylinder liner 1, which facilitates the installation of various structures inside the cylinder liner 1.

[0029] The piston 2 is provided with a spiral groove 21 and a vertical groove 22. The vertical groove 22 is set along the length direction of the main spindle 3. After the two ends of the mounting shaft 5 pass through the spiral groove 21, they are fixed on the cylinder liner 1. The connecting pin 6 is fixed to one end of the main spindle 3 and cooperates with the vertical groove 22.

[0030] During the opening and closing of the door, the main spindle 3 drives the piston 2 to rotate. Since the mounting shaft 5 is fixed on the cylinder liner 2, when the piston 2 rotates, the spiral groove 21 rotates relative to the mounting shaft 5 under the action of the mounting shaft 5, and moves along the spiral groove 21, that is, the piston 2 moves towards or away from the compression spring 4. When the door is closing, the mechanical damping effect of the buffer spring 71 or the pneumatic damping tube 72 slows down the movement speed of the piston 2 and the rotation speed of the main spindle 3, so that the door gradually decelerates from rapid closing. When the door is closed to about 10~30°, the speed slows down significantly, achieving the effect of quiet closing.

[0031] Therefore, the functional tube structure of the hinge of this utility model replaces the existing hydraulic buffer with the mechanical damping device 7, eliminating the need to add hydraulic oil to the hinge, thus achieving energy saving and quiet closing.

[0032] The functional tube structure of the hinge of this utility model also includes a needle roller bearing 9. An installation step 143 is provided on the outer side of the second sleeve 14. The needle roller bearing 9 is sleeved on the second sleeve 14 and abuts against the installation step 143. By providing the needle roller bearing 9, it is convenient for the cylinder liner 1 to be sleeved and installed on the hinge.

[0033] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A functional tube structure for a hinge, characterized in that, The assembly includes a cylinder liner (1), a piston (2), a main spindle (3), a compression spring (4), a mounting shaft (5), a connecting pin (6), and a mechanical damping device (7). The piston (2) is fitted inside the cylinder liner (1). One end of the main spindle (3) is connected to the piston (2) via the connecting pin (6), and the other end extends out of the cylinder liner (1). Both ends of the mounting shaft (5) pass through the piston (2) and are fixed to the cylinder liner (1). The compression spring (4) is fitted on the main spindle (3). One side of the piston (2) is a first accommodating cavity (11), and the other side is a second accommodating cavity (12). The main spindle (3) is located in the first accommodating cavity (11), and the mechanical damping device (7) is located in the second accommodating cavity (12). The mechanical damping device (7) abuts against the piston (2).

2. The hinge functional tube structure according to claim 1, characterized in that, The mechanical damping device (7) includes a buffer spring (71), one end of which abuts against the piston (2).

3. The hinge functional tube structure according to claim 1, characterized in that, The mechanical damping device (7) includes a pneumatic damping tube (72), the cylinder of which is fixed in the second accommodating cavity (12), and the piston rod of which is in contact with the piston (2).

4. The hinge functional tube structure according to any one of claims 1 to 3, characterized in that, It also includes a head (8), which is fitted and fixed inside the second accommodating cavity (12), and the mechanical damping device (7) abuts against the head (8).

5. The hinge functional tube structure according to claim 2, characterized in that, The outer diameter of the buffer spring (71) is smaller than the outer diameter of the compression spring (4).

6. The hinge functional tube structure according to claim 2 or 3, characterized in that, The cylinder liner (1) includes a first sleeve (13) and a second sleeve (14). One end of the second sleeve (14) is fitted inside the first sleeve (13). The second sleeve (14) has a first mounting hole (141) and a second mounting hole (142). The diameter of the second mounting hole (142) is smaller than the diameter of the first mounting hole (141). The piston (2) is located inside the first mounting hole (141). The mechanical damping device (7) is fixed inside the second mounting hole (142).

7. The hinge functional tube structure according to claim 6, characterized in that, The piston (2) is provided with a spiral groove (21) and a vertical groove (22). The vertical groove (22) is arranged along the length direction of the main spindle (3). The two ends of the mounting shaft (5) pass through the spiral groove (21) and are fixed on the cylinder liner (1). The connecting pin (6) is fixed at one end of the main spindle (3) and cooperates with the vertical groove (22).

8. The hinge functional tube structure according to claim 7, characterized in that, It also includes a needle roller bearing (9), and the outer side of the second sleeve (14) is provided with an installation step (143). The needle roller bearing (9) is sleeved on the second sleeve (14) and abuts against the installation step (143).

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