Self-adaptive pressure piston device applied to hinge shaft core

Abstract

The utility model relates to the technical field of door and window accessories, and particularly discloses a piston device with self-adaptive pressure applied to a hinge shaft core, which is provided with a shell and a piston head positioned in the shell, the piston head can reciprocate in the shell, a piston rod is arranged at one end of the piston head, and an oil seal is sleeved on the piston rod in an elastic moving manner. The oil seal can press the piston head through elasticity, and a first hydraulic oil cavity is formed between the piston head and the oil seal. According to the piston device, in the moving process of the piston head, when hydraulic oil in the first hydraulic oil cavity is transferred to the other oil cavity, the oil seal can automatically press the piston head under the action of elasticity when the pressure of the first hydraulic oil cavity is gradually reduced, so that the first hydraulic oil cavity is closed, and the hydraulic oil in the first hydraulic oil cavity is completely transferred out; complete transfer of hydraulic oil can be achieved without using a specified installation direction traditionally, so that the first hydraulic oil cavity can be closed in a self-adaptive mode, and the structure is simple and practical.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window accessories, in particular to a piston device with self-adaptive pressure applied to a hinge shaft core. Background Art

[0002] The concealed three-dimensional hinge is one of the most common hinges with door closer function on the market. This type of concealed three-dimensional hinge usually uses an internal hydraulic shaft core to achieve a buffering function. This hydraulic shaft core usually has a cam inside that drives the drive shaft to move inside the shell, thereby driving the piston to move, so that the internal hydraulic oil is transferred between the two oil chambers through the flow difference, thereby achieving buffering.

[0003] However, existing concealed three-dimensional hinges usually require the installation direction to be marked on the hinge before leaving the factory. This is because when the door is closed, the hydraulic oil slowly transfers to another oil chamber. However, after the door is closed, it needs to automatically flow back cleanly under the load-bearing force or the weight of the hydraulic oil to maintain the hydraulic effect. If it is installed upside down, the hydraulic oil cannot be completely transferred, resulting in hydraulic failure or unclear effect. Utility Model Content

[0004] In order to overcome the defects of the prior art, the present invention provides a piston device with adaptive pressure applied to a hinge shaft core to solve the above problems.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a piston device with adaptive pressure applied to a hinge axis core, which has a shell, including a piston head located in the shell, and the piston head can move back and forth in the shell. A piston rod is provided at one end of the piston head, and an elastically movable sleeve on the piston rod is provided with an oil seal so that the oil seal can be elastically pressed toward the piston head, and a first hydraulic oil chamber is formed between the piston head and the oil seal.

[0006] In the above-mentioned piston device with adaptive pressure applied to the hinge axis core, a valve hole is provided at the other end of the piston head, a conical valve core is passed through the valve hole, the conical valve core is rotatably installed in the valve seat, and the valve seat is fixedly installed in the shell to form a second hydraulic oil chamber between the valve seat and the piston head, a sealing ring is provided on the outer wall of the piston head, and a connecting hole is provided on the side of the sealing ring close to the first hydraulic oil chamber on the outer wall of the piston head, and the first hydraulic oil chamber is connected to the second hydraulic oil chamber through the connecting hole and the valve hole.

[0007] In the above-mentioned piston device with adaptive pressure applied to the hinge axis core, a threaded section is provided at the end of the piston rod away from the piston head, and the threaded section is threadedly connected to a transmission rod. A pin is provided on the side of the end of the transmission rod away from the threaded section, and a cam is sleeved on the end of the transmission rod close to the pin. A spiral hole is provided on the outer wall of the cam, and the pin is clamped in the spiral hole. A long spring is sleeved on the transmission rod.

[0008] In the above-mentioned piston device with adaptive pressure applied to the hinge shaft core, an oil seal seat is fixedly installed on the end of the oil seal away from the piston head, and a short spring sleeved on the piston rod is provided between the oil seal seat and the transmission rod, one end of the short spring abuts against the oil seal seat, and the other end abuts against the transmission rod.

[0009] In the above-mentioned piston device with adaptive pressure applied to the hinge shaft core, the oil seal is a Y-shaped sealing ring.

[0010] In the above-mentioned piston device with adaptive pressure applied to the hinge shaft core, one end of the conical valve core is connected to an adjusting rod, the adjusting rod is threadedly connected to the valve seat through an external thread, and an adjusting knob is provided at the end of the adjusting rod.

[0011] The beneficial effect of the present invention is that when the hydraulic oil in the first hydraulic oil chamber is transferred to another oil chamber during the movement of the piston head, the oil seal can, under the action of elasticity, automatically press toward the piston head when the pressure in the first hydraulic oil chamber gradually decreases, thereby closing the first hydraulic oil chamber and completely transferring the hydraulic pressure in the first hydraulic oil chamber. There is no need to follow the traditional method of using a specified installation direction to achieve complete transfer of the hydraulic oil, so that the first hydraulic oil chamber can be adaptively closed, and the structure is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the three-dimensional structure of the hydraulic shaft core of this embodiment.

[0013] Figure 2 Schematic diagram of the internal structure of the hydraulic shaft core of this embodiment.

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the piston head, oil seal and short spring.

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the conical valve core and the piston head.

[0016] In the figure: housing 1, transmission rod 2, pin 3, cam 4, long spring 5, piston head 6, oil seal 7, short spring 8, valve seat 9, threaded section 10, sealing ring 11, connecting hole 12, valve hole 13, external thread 14, tapered valve core 15, adjusting knob 16. DETAILED DESCRIPTION

[0017] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0018] Combine Figures 1 to 4 The shown embodiment is a piston device with adaptive pressure for hinge axis core, which has a shell 1, including a piston head 6 located in the shell 1, the piston head 6 can move back and forth in the shell 1, a piston rod is provided at one end of the piston head 6, and an oil seal 7 is elastically movable on the piston rod, so that the oil seal 7 can be elastically pressed toward the piston head 6, and a first hydraulic oil chamber is formed between the piston head 6 and the oil seal 7; in the present embodiment, during the movement of the piston head, when the hydraulic oil in the first hydraulic oil chamber is transferred to another oil chamber, the oil seal 7 can, under the action of elasticity, automatically press toward the piston head 6 when the pressure in the first hydraulic oil chamber gradually decreases, thereby closing the first hydraulic oil chamber, so that the hydraulic pressure in the first hydraulic oil chamber is completely transferred out, and there is no need to follow the traditional method of using a specified installation direction to achieve complete transfer of the hydraulic oil, so that the first hydraulic oil chamber can be adaptively closed, and the structure is simple and practical.

[0019] The other end of the piston head 6 of this embodiment is provided with a valve hole 13, and a tapered valve core 15 is penetrated in the valve hole 13. The tapered valve core 15 is rotatably mounted in the valve seat 9, and the valve seat 9 is fixedly mounted in the housing 1 to form a second hydraulic oil chamber between the valve seat 9 and the piston head 6. A sealing ring 11 is sleeved on the outer wall of the piston head 6. A communicating hole 12 is provided on the outer wall of the piston head 6 on the side of the sealing ring 11 close to the first hydraulic oil chamber. The first hydraulic oil chamber is connected to the second hydraulic oil chamber through the communicating hole 12 and the valve hole 13; when the piston head 6 moves on the tapered valve core 15, the distance between the valve hole 13 and the tapered valve core 15 will change, thereby changing the flow rate of the hydraulic oil transfer, thereby achieving a buffering effect. The sealing ring 11 can seal and separate the first hydraulic oil chamber and the second hydraulic oil chamber to prevent oil leakage. Similarly, a sealing ring can also be sleeved on the valve seat 9.

[0020] The piston rod of this embodiment is provided with a threaded section 10 at the end away from the piston head 6, and the threaded section 10 is threadedly connected to the transmission rod 2. A pin 3 is provided on the side of the end of the transmission rod 2 away from the threaded section 10, and a cam 4 is sleeved on the end of the transmission rod 2 close to the pin 3. A spiral hole is provided on the outer wall of the cam 4, and the pin 3 is clamped in the spiral hole, and a long spring 5 is sleeved on the transmission rod 2; the cam 4 is connected to the inner wall of the outer shell 1, and when the outer shell 1 rotates during the door opening and closing process, the cam 4 follows the rotation, so that the pin 3 is guided to move in the spiral hole, thereby pulling the transmission rod 2 to move, causing the piston head 6 to move back and forth, thereby transferring the hydraulic oil between the first hydraulic oil chamber and the second hydraulic oil chamber; at the same time, the long spring 5 can be compressed to store energy and release and recover during the movement of the transmission rod 2, so that the buffering effect is more obvious.

[0021] The oil seal 7 of this embodiment is fixedly installed with an oil seal seat at one end away from the piston head 6, and a short spring 8 sleeved on the piston rod is provided between the oil seal seat and the transmission rod 2, with one end of the short spring 8 abutting against the oil seal seat and the other end abutting against the transmission rod 2; when the hydraulic oil is transferred from the first hydraulic oil chamber to the second hydraulic oil chamber, as the hydraulic oil in the first hydraulic oil chamber decreases, the short spring 8 recovers and presses the oil seal 7 toward the piston head 6 until the hydraulic oil is completely transferred to the second hydraulic oil chamber; and when the hydraulic oil is transferred from the second hydraulic oil chamber to the first hydraulic oil chamber, the hydraulic oil presses the oil seal 7, causing the short spring 8 to be compressed, and the first hydraulic oil chamber between the piston head 6 and the oil seal 7 to increase.

[0022] It is worth noting that the oil seal 7 of this embodiment is a Y-shaped sealing ring. After the hydraulic oil enters the first hydraulic oil chamber, the Y-shaped sealing ring can expand, making the oil seal 7 and the housing 1 tighter, preventing the hydraulic oil from seeping into the space outside the first hydraulic oil chamber.

[0023] One end of the conical valve core 15 of this embodiment is connected to an adjusting rod, which is threadedly connected to the valve seat 9 through an external thread 14, and an adjusting knob 16 is provided at the end of the adjusting rod; the different tapers of the conical valve core 15 in the valve hole 13 can be adjusted by the adjusting knob 16, thereby adjusting the transfer flow of the hydraulic oil, thereby realizing the adjustment of the buffer force.

[0024] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A piston device with adaptive pressure for a hinge axis, comprising a housing (1) and characterized in that: The invention comprises a piston head (6) located in a housing (1), wherein the piston head (6) can reciprocate in the housing (1), a piston rod is provided at one end of the piston head (6), and an oil seal (7) is provided on the piston rod so as to be elastically movable so that the oil seal (7) can be elastically pressed toward the piston head (6), and a first hydraulic oil chamber is formed between the piston head (6) and the oil seal (7).

2. A piston device with adaptive pressure applied to a hinge axis according to claim 1, characterized in that: The other end of the piston head (6) is provided with a valve hole (13), and a conical valve core (15) is inserted into the valve hole (13). The conical valve core (15) is rotatably mounted in the valve seat (9), and the valve seat (9) is fixedly mounted in the housing (1) so that a second hydraulic oil chamber is formed between the valve seat (9) and the piston head (6). A sealing ring (11) is sleeved on the outer wall of the piston head (6), and a connecting hole (12) is provided on the side of the sealing ring (11) close to the first hydraulic oil chamber. The first hydraulic oil chamber is connected to the second hydraulic oil chamber through the connecting hole (12) and the valve hole (13).

3. The piston device with adaptive pressure applied to a hinge axis according to claim 1, characterized in that: A threaded section (10) is provided at one end of the piston rod away from the piston head (6), the threaded section (10) is threadedly connected to a transmission rod (2), a pin (3) is provided on the side of one end of the transmission rod (2) away from the threaded section (10), a cam (4) is sleeved on one end of the transmission rod (2) close to the pin (3), a spiral hole is provided on the outer wall of the cam (4), the pin (3) is clamped in the spiral hole, and a long spring (5) is sleeved on the transmission rod (2).

4. A piston device with adaptive pressure applied to a hinge axis according to claim 3, characterized in that: An oil seal seat is fixedly mounted on one end of the oil seal (7) away from the piston head (6), and a short spring (8) sleeved on the piston rod is provided between the oil seal seat and the transmission rod (2). One end of the short spring (8) abuts against the oil seal seat, and the other end abuts against the transmission rod (2).

5. A piston device with adaptive pressure applied to a hinge axis according to claim 4, characterized in that: The oil seal (7) is a Y-shaped sealing ring.

6. The piston device with adaptive pressure applied to a hinge axis according to claim 2, characterized in that: One end of the conical valve core (15) is connected to an adjusting rod, and the adjusting rod is threadedly connected to the valve seat (9) through an external thread (14). An adjusting knob (16) is provided at the end of the adjusting rod.

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