Improved hydraulic cushion hinge

Abstract

The utility model relates to a hydraulic buffer hinge, which comprises a hinge cup and a hinge arm, and the hinge cup and the hinge arm are connected through a first connecting rod and a second connecting rod, the front end of the first connecting rod is provided with a buffer arm and a reset arm, the inner bottom of the hinge cup is slidably provided with a linkage plate, a damper is arranged between the linkage plate and the hinge cup, and the damper slows down the movement speed of the linkage plate; the buffer plate and the reset plate are arranged on the linkage plate at positions corresponding to the buffer arm and the reset arm, and the buffer plate and the reset plate are used for cooperating with the buffer arm and the reset arm. The utility model has the beneficial effects that the reset arm is arranged at the front end of the first connecting rod, the reset plate is arranged on the linkage plate, the reset arm cooperates with the reset plate when the hinge is opened, the linkage plate is actively driven to move forward, and reset is realized. The active reset mode of mechanical linkage greatly enhances the reset capacity of the linkage plate and overcomes the defect of insufficient self-reset force of the damper.

Description

Technical Field

[0001] This utility model relates to the field of hardware hinge technology, specifically an improved structure of a hydraulic buffer hinge. Background Technology

[0002] Hydraulic buffer hinges are a common type of connector and are widely used in furniture, home appliances, industrial equipment and other fields. Their main function is to enable doors to open and close smoothly and provide a buffering and shock absorption effect to avoid collisions and noise.

[0003] Traditional hydraulic damping hinges typically include a hinge cup, a hinge arm, a connecting rod, and a damping mechanism housed within the hinge cup. In existing technologies, the most common damping mechanism is a hydraulic damper. When the hinge is closed, the connecting rod compresses the damper, achieving a damping effect; when the hinge is open or needs to be reset, the damper relies on its own elasticity or internal structure to achieve self-resetting.

[0004] However, existing hydraulic damping hinges have some drawbacks in practical use, especially regarding the reliability of the linkage plate's reset. Specifically, in existing technologies, the reset of the linkage plate often relies excessively on the damper's own self-resetting force. This self-resetting force is usually small, and its magnitude is limited by various factors such as the strength of the internal spring of the damper, the viscosity of the hydraulic oil, and the friction of the seals.

[0005] This relatively small self-resetting force results in insufficient force when the linkage plate resets, affecting the hinge's ability to fully open or reset promptly, thus reducing reliability. In some cases, due to insufficient self-resetting force to overcome friction or external resistance during sliding, the linkage plate may even fail to reset, causing the hinge to malfunction. For example, it may fail to maintain a fully open position after the cabinet door is opened, or the buffering effect may be unstable when closing. Especially after long-term use, issues such as internal wear of the damper and aging of the hydraulic oil will further weaken its self-resetting capability, increasing the risk of reset failure. Therefore, further improvements are necessary. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an improved structure for a hydraulic buffer hinge that is simple in structure, easy to use, and can effectively enhance the reset capability of the linkage plate, thereby improving the overall reliability of the hydraulic buffer hinge.

[0007] The purpose of this utility model is achieved through the following means: an improved structure of a hydraulic buffer hinge, which includes a hinge cup and a hinge arm. The hinge cup and the hinge arm are hinged together by a first link and a second link. The hinge cup and the hinge arm rotate relative to the first link and the second link to realize the opening and closing of the hinge. The front end of the first link is provided with a buffer arm and a reset arm. The buffer arm and the reset arm swing around the hinge point between the first link and the hinge cup.

[0008] A linkage plate is slidably installed on the inner bottom of the hinge cup, and a damper is provided between the linkage plate and the hinge cup to slow down the movement speed of the linkage plate.

[0009] The linkage plate is provided with a buffer plate and a reset plate at the positions corresponding to the buffer arm and the reset arm, and the buffer plate and the reset plate are used to cooperate with the buffer arm and the reset arm.

[0010] When the hinge is closed, the buffer arm cooperates with the buffer plate to drive the linkage plate to move backward, thereby realizing the compression damping of the damper;

[0011] When the hinge is open, the reset arm cooperates with the reset plate to drive the linkage plate forward, thereby achieving the reset.

[0012] Furthermore, the buffer plate and reset plate are flanges formed by bending the main body material of the linkage plate upwards.

[0013] Furthermore, the linkage plate is provided with a damping plate for connecting to the damper.

[0014] Furthermore, the hinge cup is provided with a guide groove, and the damping plate is slidably installed in the guide groove.

[0015] Furthermore, a pressure plate is also installed inside the hinge cup, and a space is left between the pressure plate and the inner bottom of the hinge cup to form an accommodating area, in which the linkage plate slides.

[0016] Furthermore, the reset arm includes a first reset arm and a second reset arm, which extend from the front end of the first connecting rod to its upper and lower sides.

[0017] Furthermore, the first reset arm and the second reset arm are integrally formed from a metal sheet with the first connecting rod.

[0018] Furthermore, the damper is a compression-damped self-resetting hydraulic cylinder.

[0019] The beneficial effects of this utility model are: 1. Simple structure, low production cost, and improved market competitiveness.

[0020] 2. This utility model features a reset arm at the front end of the first connecting rod and a reset plate on the linkage plate. When the hinge opens, the reset arm and reset plate work together to actively drive the linkage plate forward, achieving reset. This active reset method of mechanical linkage greatly enhances the reset capability of the linkage plate, overcomes the shortcomings of insufficient self-reset force of the damper, and ensures that the linkage plate can accurately and thoroughly reset itself each time, thereby guaranteeing the continuous effectiveness of the hinge's buffering function.

[0021] 3. In this case, the reset arm includes a first reset arm and a second reset arm, extending from the front end of the first connecting rod to its upper and lower sides. This design allows the first and second reset arms to cooperate with the reset plate in stages or in a more stable manner during the hinge opening process, forming a "two-stage reset" effect. This further improves the smoothness and reliability of the reset, effectively avoiding situations where the linkage plate jams or fails to position properly.

[0022] 4. The buffer arm and reset arm are located at the front end of the first link and are tightly integrated with the core moving parts of the hinge, resulting in a compact structure. Meanwhile, the linkage plate, buffer plate, reset plate, and damper are cleverly integrated inside the hinge cup, and slide through a receiving area formed by the pressure plate, maximizing the utilization of the internal space of the entire mechanism while facilitating installation and maintenance. Attached Figure Description

[0023] Figure 1 This is a rendering of the hinge in the open state in this utility model.

[0024] Figure 2 This is a diagram showing the hinge in the closed state in this utility model.

[0025] Figure 3 This is a cross-sectional view of the structure of this utility model.

[0026] Figure 4 , 5 This is an exploded view of the structure of this utility model.

[0027] Figure 6 , Figure 7 , Figure 8 This is a schematic diagram of the action of the buffer arm pushing the buffer plate during the hinge closing process in this utility model.

[0028] Figure 9 , Figure 10 , Figure 11 This is a schematic diagram of the action of the reset arm pushing the reset plate during the hinge opening process in this utility model. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings. An improved structure of a hydraulic buffer hinge includes a hinge cup 1 and a hinge arm 2. The hinge cup 1 and the hinge arm 2 are hinged together by a first connecting rod 3 and a second connecting rod 4. The hinge arm 2 rotates relative to the first connecting rod 3 and the second connecting rod 4 to open and close the hinge. A buffer arm 5 and a reset arm 6 are provided at the front end of the first connecting rod 3. The buffer arm 5 and the reset arm 6 are driven by the first connecting rod 3 and swing around the hinge point between the first connecting rod 3 and the hinge cup 1. A linkage plate 7 is slidably installed on the inner bottom of the hinge cup 1, and a linkage plate 7 is provided between the hinge cup 1 and the hinge cup 1. A damper 8 is provided to slow down the movement speed of the linkage plate 7. A buffer plate 71 and a reset plate 72 are provided on the linkage plate 7 corresponding to the positions of the buffer arm 5 and the reset arm 6. The buffer plate 71 and the reset plate 72 are used to cooperate with the buffer arm 5 and the reset arm 6. When the hinge is closed, the buffer arm 5 cooperates with the buffer plate 71 to drive the linkage plate 7 to move backward, realizing the compression damping of the damper 8. When the hinge is open, the reset arm 6 cooperates with the reset plate 72 to drive the linkage plate 7 to move forward, realizing the reset.

[0030] In this embodiment, when the hinge operates, the hinge arm 2 rotates relative to the first link 3 and the second link 4. This rotation causes the first link 3 to swing, which in turn drives the buffer arm 5 and the reset arm 6 located at its front end to swing around the hinge point between the first link and the hinge cup.

[0031] At the final stage of hinge closure, the buffer arm 5 contacts and engages with the buffer plate 71 on the linkage plate 7. As the hinge continues to close, the buffer arm 5 drives the linkage plate 7 to slide backward. Since a damper 8 is connected between the linkage plate 7 and the hinge cup 1, the backward movement of the linkage plate 7 will compress the damper 8, thereby achieving a compression damping effect, slowing down the hinge closing speed and preventing the door from slamming shut.

[0032] When the hinge opens, the reverse swing of the first link 3 causes the reset arm 6 to contact and engage with the reset plate 72 on the linkage plate 7. At this time, the reset arm 6 actively drives the linkage plate 7 to slide forward. This active drive reset is one of the key technical advantages of this invention, overcoming the shortcomings of existing technologies that rely solely on the insufficient self-resetting force of the damper. While the linkage plate 7 moves forward, it also ensures the full reset of the damper 8, preparing for the next buffering action. This mechanically linked forced reset greatly improves the reliability of the linkage plate reset, ensuring the continuous effectiveness and stability of the hinge's buffering function.

[0033] In one embodiment: the buffer plate 71 and the reset plate 72 are flanges formed by bending the material of the linkage plate 7 body upward.

[0034] In this embodiment, by bending the body material of the linkage plate 7 upward to form a flange, both the functions of a buffer plate and a reset plate are achieved, while the manufacturing process is simplified. This one-piece molding design reduces the number of parts and assembly steps, improving production efficiency. At the same time, the flanged structure provides sufficient strength and contact area to ensure that the buffer arm 5 and the reset arm 6 can effectively transmit driving force when they cooperate with each other, thereby stably realizing the buffering and reset of the linkage plate.

[0035] In one embodiment, the linkage plate 7 is provided with a damping plate 73 for connection with the damper 8. Specifically, the damping plate 73, as a specific part of the linkage plate 7, functions as a connecting medium to firmly fix or connect the damper 8 to the linkage plate 7. Thus, when the linkage plate 7 slides under the drive of the buffer arm 5 or the reset arm 6, the damping plate 73 ensures that the damper 8 synchronously compresses or resets, thereby achieving its damping and reset functions. This design makes the force transmission between the linkage plate and the damper more stable and reliable.

[0036] In one embodiment, a guide groove 11 is provided within the hinge cup 1, and the damping plate 73 is slidably mounted within this guide groove 11. The guide groove 11 within the hinge cup 1 provides a precise sliding path for the damping plate 73 connected to the linkage plate 7. When the linkage plate 7 moves back and forth within the hinge cup 1, the sliding of the damping plate 73 within the guide groove 11 effectively limits the lateral displacement of the linkage plate 7, ensuring its smooth linear movement along a preset direction. This guiding mechanism avoids potential jamming or deviation of the linkage plate during sliding, thereby ensuring the smoothness and stability of the buffering and reset mechanism.

[0037] In one embodiment: a pressure plate 9 is also installed inside the hinge cup 1, and a space is left between the pressure plate 9 and the inner bottom of the hinge cup 1 to form a receiving area 91, and the linkage plate 7 slides within the receiving area 91.

[0038] In this embodiment, the installation of the pressure plate 9 within the hinge cup 1 forms a specific receiving area 91. The linkage plate 7 is cleverly positioned and confined within this receiving area 91 for sliding. This design not only effectively fixes the longitudinal position of the linkage plate 7, preventing it from detaching from the hinge cup, but also provides a closed and protected sliding environment for the linkage plate. Simultaneously, the presence of the pressure plate may also help to press down the damper or other internal components, making the entire mechanism more compact and stable, and improving the overall structural strength and reliability of the hinge.

[0039] In one embodiment: the reset arm 6 includes a first reset arm 61 and a second reset arm 62, which extend from the front end of the first connecting rod 3 to its upper and lower sides.

[0040] In this embodiment, the single reset arm 6 is split into a first reset arm 61 and a second reset arm 62. This design allows the reset arm 6 to contact and engage with the reset plate 72 at two or more points when the hinge opens and drives the linkage plate to reset. This "two-stage reset" operation provides a more stable and uniform driving force during the linkage plate reset process, especially when the reset stroke is long or a larger reset force is required. By distributing the force, wear or uneven force that may be caused by a single contact point can be effectively avoided, thereby further improving the smoothness, reliability, and durability of the linkage plate reset and the mechanism.

[0041] In one embodiment, the first reset arm 61 and the second reset arm 62 are integrally formed from a sheet metal. This integral forming process manufactures these components as a single unit, rather than assembling them through welding or riveting. This significantly improves the overall strength and rigidity of the components, avoiding stress concentration and failure risks at the joints. Simultaneously, it simplifies the production process, reduces manufacturing costs and errors, and improves product production efficiency and consistency. More importantly, the integral forming ensures more direct and efficient force transmission when the reset arm drives the linkage plate to reset, further enhancing the reliability of the reset mechanism.

[0042] In one embodiment: the damper 8 is a compression-damped self-resetting hydraulic cylinder.

[0043] When a compression-damped self-resetting hydraulic cylinder is subjected to external pressure, i.e., the linkage plate pushes it, its internal piston compresses the hydraulic oil, achieving a damping effect through the flow resistance of the oil. When the external pressure is removed, i.e., when the linkage plate resets, the spring or other energy storage element inside the hydraulic cylinder pushes the piston back to its original position, achieving its own reset. The advantage of choosing this type of damper is that it can provide controllable buffer resistance, and under the active reset mechanism of this invention, even with a small self-resetting force, the linkage plate can be completely reset by driving the reset arm. It effectively cooperates with the active reset mechanism of this invention to ensure the coordinated operation of the hinge's buffering and reset functions.

[0044] In summary, the core working principle of this utility model lies in achieving buffering and active reset functions through the mechanical linkage during hinge opening and closing.

[0045] Specifically: During the hinge closing process, the rotation of the hinge arm causes the first connecting rod to swing, which in turn causes the buffer arm 5 to contact the buffer plate 71 on the linkage plate 7, driving the linkage plate 7 to slide backward. The backward movement of the linkage plate 7 compresses the damper 8, and the oil flow resistance of the damper achieves a smooth buffering effect, effectively avoiding the impact and noise of the door leaf.

[0046] The main difference and significant advancement compared to existing technologies lies in its active reset mechanism. When the hinge opens, the reverse swing of the first link 3 causes the reset arm 6 to contact the reset plate 72 on the linkage plate 7, directly driving the linkage plate 7 forward, thereby achieving reliable reset. This mechanically driven reset method completely solves the problem of incomplete or failed reset of the linkage plate caused by the weak self-resetting force of the damper in traditional methods, greatly improving the reliability and service life of the hinge.

[0047] Furthermore, this utility model further improves the manufacturing efficiency, structural strength, and stability of the reset operation by designing the buffer plate 71 and reset plate 72 as the flanges of the linkage plate body, and by making the reset arm 6 disassembled into the first reset arm 61 and the second reset arm 62 and integrally formed with the first connecting rod 3. It can even achieve two-stage reset, ensuring that the linkage plate can be accurately and thoroughly reset in any usage environment. Therefore, it can be widely promoted and used.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An improved structure of a hydraulic buffer hinge, comprising a hinge cup (1) and a hinge arm (2), wherein the hinge cup (1) and the hinge arm (2) are hinged together by a first connecting rod (3) and a second connecting rod (4), and the hinge cup and the hinge arm (2) rotate relative to the first connecting rod (3) and the second connecting rod (4) to realize the opening and closing of the hinge, characterized in that: The front end of the first link (3) is provided with a buffer arm (5) and a reset arm (6), and the buffer arm (5) and the reset arm (6) swing around the hinge point between the first link (3) and the hinge cup (1). The hinge cup (1) is slidably mounted with a linkage plate (7) at its inner bottom. A damper (8) is provided between the linkage plate (7) and the hinge cup (1). The damper (8) slows down the movement speed of the linkage plate (7). The linkage plate (7) is provided with a buffer plate (71) and a reset plate (72) at the positions corresponding to the buffer arm (5) and the reset arm (6). The buffer plate (71) and the reset plate (72) are used to cooperate with the buffer arm (5) and the reset arm (6). When the hinge is closed, the buffer arm (5) cooperates with the buffer plate (71) to drive the linkage plate (7) to move backward, thereby realizing the compression damping of the damper (8); When the hinge is opened, the reset arm (6) cooperates with the reset plate (72) to drive the linkage plate (7) to move forward and achieve reset.

2. The improved structure of the hydraulic buffer hinge according to claim 1, characterized in that: The buffer plate (71) and reset plate (72) are flanges formed by bending the main body material of the linkage plate (7) upwards.

3. The improved structure of the hydraulic buffer hinge according to claim 1, characterized in that: The linkage plate (7) is provided with a damping plate (73) for connecting with the damper (8).

4. The improved structure of a hydraulic buffer hinge according to claim 1, characterized in that: The hinge cup (1) is provided with a guide groove (11), and the damping plate (73) is slidably installed in the guide groove (11).

5. The improved structure of a hydraulic buffer hinge according to claim 1, characterized in that: The hinge cup (1) is also covered by a pressure plate (9), and a space is left between the pressure plate (9) and the inner bottom of the hinge cup (1) to form a receiving area (91). The linkage plate (7) slides within the receiving area (91).

6. The improved structure of a hydraulic buffer hinge according to claim 1, characterized in that: The reset arm (6) includes a first reset arm (61) and a second reset arm (62), which extend from the front end of the first connecting rod (3) to its upper and lower sides.

7. The improved structure of a hydraulic buffer hinge according to claim 6, characterized in that: The first reset arm (61) and the second reset arm (62) are integrally formed from metal plates with the first connecting rod (3).

8. The improved structure of a hydraulic buffer hinge according to claim 1, characterized in that: The damper (8) is a compression damping self-resetting hydraulic cylinder.

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