Hydraulic buffering hinge

Abstract

A hydraulic buffering hinge comprises a hinge cup and a hinge arm, the hinge cup and the hinge arm are hinged through an upper connecting rod and a lower connecting rod, the two sides of the hinge cup penetrate through a body to be provided with installation grooves, supporting shells are fixedly installed on the installation grooves respectively, and the supporting shells extend towards the interior of the hinge cup to form pressing plates. The space between the pressing plate and the inner bottom of the hinge cup is hollowed to form a limiting area; a sliding plate is mounted in the limiting area in a sliding manner; a damper is mounted between the sliding plate and the hinge cup; the upper connecting rod extends towards the direction of the sliding plate to be provided with a driving arm, and when the hinge is closed, the driving arm pushes the sliding plate to move to generate a damping effect when the hinge is closed. The buffer mechanism has the advantages that the size of the hinge arm is remarkably reduced, and the size of the hinge arm is greatly reduced due to the fact that the buffer mechanism does not occupy the space of the hinge arm any more. Due to the compact design, the physical occupied space of the hinge arm is reduced, so that the hinge arm is more flexible to install and use, and is suitable for various furniture sizes and styles.

Description

Technical Field

[0001] The invention relates to a hardware hinge, in particular to a hydraulic buffer hinge. Background Art

[0002] As an indispensable connecting component in furniture, cabinets and other household items, the performance of hydraulic buffer hinges directly affects the product's user experience and durability. As consumers' requirements for home quality increase, hydraulic buffer hinges have gradually become the focus of market attention due to their ability to reduce the impact force when the door panel is closed, reduce noise and extend service life. However, despite the significant functional advantages of hydraulic buffer hinges, the design in the prior art still has many deficiencies, especially in the location of the buffer device, the design of the transmission mechanism and the balance of the buffer force, which urgently need to be improved.

[0003] In the traditional design of hydraulic buffer hinges, the buffer device is usually set inside the hinge arm and connected to the upper link or lower link through a complex linkage mechanism to achieve the damping effect when the hinge is closed. Although this design achieves the buffer function to a certain extent, it exposes a series of problems in actual application: 1. For example, since the buffer device is directly installed inside the hinge arm, the size of the hinge arm must be increased to accommodate the buffer device and its related components. This design results in an oversized hinge arm, which not only limits the installation flexibility of the hinge, but also makes its appearance bloated, which is contrary to the simple and exquisite style pursued by modern home design and reduces the overall aesthetics.

[0004] 2. The buffer device needs to be connected to the upper or lower connecting rod through a multi-stage connecting rod mechanism. This complex design significantly increases the structural complexity of the hinge. The difficulty of manufacturing and assembly increases accordingly, resulting in a significant increase in production costs. In addition, the complex connecting rod mechanism is prone to failure due to wear or fatigue in long-term use, such as loose connecting rods or damping failure, which reduces the reliability and durability of the hinge. 3. The hydraulic buffer hinges in the prior art have significant defects in the control of buffer force, and it is difficult to achieve an ideal balance between closing speed and complete closing. This is specifically manifested in the following two aspects: A: When the buffer force is designed to be too small, the speed of the door leaf when closing cannot be effectively slowed down, resulting in too fast closing speed. This situation will not only produce a large impact force and noise, affecting the user experience, but also cause impact damage to the door leaf and the hinge itself. Under long-term use, frequent impacts will accelerate the wear of the hinge, shorten its service life, and may even pinch the user's fingers due to rapid closing, posing a safety hazard.

[0005] B: In order to avoid the problem of closing the door too quickly, some designs slow down the closing speed by increasing the buffer force. However, this approach often leads to another extreme problem: due to the excessive damping effect, the door leaf cannot be completely closed after closing to a certain extent, leaving a gap. This not only affects the sealing and aesthetics of the door leaf, but may also cause the door leaf to open accidentally under the action of slight external force, reducing the user experience and safety. Therefore, it is necessary to make further improvements. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a hydraulic buffer hinge with a simple structure, optimized setting position and transmission mode of the buffer device, and solving the problem of insufficient buffer force balance, so as to achieve a smooth, quiet and completely closed door leaf closing effect, thereby improving the overall performance of the hinge and user experience.

[0007] The object of the present invention is achieved in the following manner: a hydraulic buffer hinge, which includes a hinge cup and a hinge arm, the hinge cup and the hinge arm are hinged by an upper connecting rod and a lower connecting rod, the upper connecting rod and the lower connecting rod swing relative to the hinge arm and the hinge cup to realize the opening and closing of the hinge, the hinge cup is provided with mounting grooves on both sides thereof penetrating through its body, the mounting grooves are respectively fixedly provided with support shells, the support shells are provided with a pressure plate extending inwardly of the cup, and a limit zone is formed by hollowing out between the pressure plate and the inner bottom of the hinge cup; A slide plate is slidably installed in the limiting area, and a damper is installed between the slide plate and the hinge cup; The upper connecting rod is provided with a driving arm extending in the direction of the slide plate. When the hinge is closed, the driving arm pushes the slide plate to move, thereby generating a damping effect when the hinge is closed.

[0008] Furthermore: a plurality of elastic buckles are arranged on the inner side wall of the support shell, and correspondingly, a plurality of mounting holes are opened on the outer side wall of the hinge cup, and the support shell is fixed in the mounting holes by the elastic buckles.

[0009] Furthermore, a height limiting plate extends downward from the bottom of the pressing plate, the height limiting plate is supported on the inner bottom of the hinge cup, and the side wall of the sliding plate slides on the inner side of the height limiting plate.

[0010] Furthermore: a driving plate is extended upward from the top of the skateboard, a driving arm is connected to the driving plate, and the driving arm drives the skateboard to move through the driving plate.

[0011] Furthermore, a first damping plate and a second damping plate are extended outwardly from both sides of the slide plate, and the first damping plate and the second damping plate are respectively extended into the mounting grooves on both sides to be connected with the damper.

[0012] Furthermore: a receiving cavity is provided in the support shell, the damper is installed in the receiving cavity, a side wall of the receiving cavity is provided with an air avoidance groove which is connected to the inside of the hinge cup, and the first damping plate or the second damping plate passes through the air avoidance groove into the receiving cavity and is connected to the damper.

[0013] Furthermore: the front end of the first damping plate is extended upwardly to be provided with a first baffle, the rear end of the second damping plate is extended upwardly to be provided with a second baffle, and the piston rod portion of the damper extends into the movable stroke of the first baffle and the second baffle.

[0014] Further: the damper is a self-resetting hydraulic buffer cylinder.

[0015] Furthermore, the slide plate, the driving plate, the first damping plate, the second damping plate, the first baffle plate and the second baffle plate are integrally stamped from metal plates.

[0016] The beneficial effects of the present invention are: 1. Simple structure, low production cost and improved market competitiveness.

[0017] 2. The volume of the hinge arm is significantly reduced. Since the buffer mechanism no longer occupies the hinge arm space, the size of the hinge arm can be greatly reduced. This compact design reduces the physical space occupied by the hinge arm, making it more flexible in installation and use, and suitable for various furniture sizes and styles.

[0018] 3. The appearance is more beautiful and neat, and the smaller hinge arm presents a simpler and more modern appearance, which conforms to the exquisite and simple style pursued by current home design and enhances the overall visual effect of the furniture.

[0019] 4. The hinge cup and its internal buffer mechanism are designed to be embedded in the board and completely hidden from sight. This hidden installation not only further improves the flatness and aesthetics of the furniture surface, but also provides additional protection for the buffer mechanism to prevent damage from external dust, moisture or accidental impact, thereby improving the durability and reliability of the hinge.

[0020] 5. The synergistic effect of the dual dampers provides a smoother damping curve, allowing the door leaf to maintain a stable deceleration state throughout the closing process. Compared with the traditional single damper design, the closing action of the present invention is smoother, without obvious frustration, and improves the user's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a rendering of the hinge in the present invention in an open state.

[0022] Figure 2 This is a rendering of the hinge in the present invention in a closed state.

[0023] Figure 3 This is a cross-sectional view of the structure of the hinge in the open state in the present invention.

[0024] Figure 4 This is a cross-sectional view of the structure of the hinge in the closed state in the present invention.

[0025] Figure 5 It is a structural exploded view of the present invention.

[0026] Figure 6 This is an exploded view of the skateboard and support leg structure of the present invention.

[0027] Figure 7 It is a schematic diagram of the structure of the slide plate in the present invention.

[0028] Figure 8 It is a schematic diagram of the supporting shell structure in the present invention. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings. A hydraulic buffer hinge comprises a hinge cup 1 and a hinge arm 2, wherein the hinge cup 1 and the hinge arm 2 are hingedly connected via an upper connecting rod 3 and a lower connecting rod 4, wherein the upper connecting rod 3 and the lower connecting rod 4 swing relative to the hinge arm 2 and the hinge cup 1 to realize the opening and closing of the hinge, wherein mounting grooves 11 are provided on both sides of the hinge cup 1 through the main body thereof, wherein support shells 5 are fixedly installed on the mounting grooves 11, wherein a pressure plate 51 is extended inwardly of the support shell 5, wherein a limit zone 6 is formed by hollowing out between the pressure plate 51 and the inner bottom of the hinge cup 1; A slide plate 7 is slidably installed in the limiting area 6, and a damper 8 is installed between the slide plate 7 and the hinge cup 1; The upper connecting rod 3 is provided with a driving arm 31 extending toward the slide plate 7. When the hinge is closed, the driving arm 31 pushes the slide plate 7 to move, thereby generating a damping effect when the hinge is closed.

[0030] In one of the embodiments: a plurality of elastic buckles 52 are provided on the inner wall of the support shell 5 , and correspondingly, a plurality of mounting holes 12 are opened on the outer wall of the hinge cup 1 , and the support shell 5 is fixed in the mounting holes 12 by the elastic buckles 52 .

[0031] In one embodiment, a height limiting plate 53 extends downward from the bottom of the pressing plate 51 , the height limiting plate 53 is supported on the inner bottom of the hinge cup 1 , and the side wall of the sliding plate 7 slides on the inner side of the height limiting plate 53 .

[0032] In one embodiment, a driving plate 71 is extended upward from the top of the slide plate 7 , and the driving arm 31 is connected to the driving plate 71 . The driving arm 31 pushes the slide plate 7 to move through the driving plate 71 .

[0033] In one embodiment, a first damping plate 72 and a second damping plate 73 are extended outwardly from both sides of the slide plate 7 , and the first damping plate 72 and the second damping plate 73 are respectively extended into the mounting grooves 11 on both sides to be connected with the damper 8 .

[0034] In one of the embodiments: a receiving chamber 54 is provided in the support shell 5, and the damper 8 is installed in the receiving chamber 54. A side wall of the receiving chamber 54 is provided with a gas avoidance groove 55 which is connected to the inside of the hinge cup 1. The first damping plate 72 or the second damping plate 73 passes through the gas avoidance groove 55 and enters the receiving chamber 54 to be connected to the damper 8.

[0035] In one embodiment, a first baffle 74 is extended upward from the front end of the first damping plate 72, a second baffle 75 is extended upward from the rear end of the second damping plate 73, and a piston rod portion of the damper 8 extends into the movable travel of the first baffle 74 and the second baffle 75.

[0036] In one embodiment, the damper 8 is a self-resetting hydraulic buffer cylinder.

[0037] In one embodiment, the slide plate 7, the driving plate 71, the first damping plate 72, the second damping plate 73, the first baffle plate 74 and the second baffle plate 75 are integrally stamped from a metal plate.

[0038] Working principle: When the door leaf starts to close, the upper connecting rod 3 swings relative to the hinge arm 2 and the hinge cup 1, and the driving arm 31 extending therefrom starts to move. The driving arm 31 is connected to the driving plate 71 on the top of the slide plate 7, and by pushing the driving plate 71, the slide plate 7 is driven to slide in a straight line within the limit area 6. This direct transmission design simplifies the complex connecting rod mechanism in the traditional hinge, reduces the mechanical failure points, and improves reliability.

[0039] It should be noted that: a first damping plate 72 and a second damping plate 73 extend outwards on both sides of the slide plate 7, respectively, and are connected to the two dampers 8. A first baffle 74 is provided at the front end of the first damping plate 72. When the slide plate 7 slides, the first baffle 74 first contacts the piston rod of the first damper 8, pushing it to compress and generate an initial damping force. The damping effect at this stage slows down the initial closing speed of the door leaf, avoiding the impact and noise caused by too fast closing.

[0040] As the slide plate 7 continues to slide backward, the second baffle 75 provided at the rear end of the second damping plate 73 subsequently contacts the piston rod of the second damper 8, pushing it to compress. At this time, the two dampers work simultaneously, further enhancing the damping effect, ensuring that the door leaf slows down further when it is close to being fully closed, and finally achieves a gentle closing. This segmented damping mechanism - the first damper intervenes first, and the second damper intervenes later - divides the closing process into multiple controlled stages, significantly improving the smoothness and stability of closing the door.

[0041] When the door leaf is fully closed, the slide plate 7 slides to the end of the stroke, and the two dampers 8 are in a compressed state, providing a damping force to ensure that the door leaf is stable and in place without rebound or gap. This segmented damping design overcomes the defect of the traditional hinge buffer force being single, avoiding the problems of "closing the door too fast" or "not being able to close completely", while significantly reducing the noise during closing and achieving a silent effect.

[0042] When the door leaf is reopened, the upper connecting rod 3 swings in the opposite direction, and the driving arm 31 releases the thrust on the slide plate 7. The two dampers 8 are self-resetting hydraulic buffer cylinders. Under the action of the internal spring or hydraulic pressure, the piston rod automatically extends and pushes the slide plate 7 back to the initial position to prepare for the next closing action. This self-resetting feature ensures the cyclic performance of the hinge and enhances durability.

[0043] Compared with the conventional technology, in this case, the damping mechanism is arranged in the hinge cup 1 and fixed by the mounting groove 11 and the support shell 5, and the entire mechanism is embedded in the door leaf plate and hidden. This design simplifies the function of the hinge arm 2 into a connecting component, significantly reduces its volume, and makes its appearance more concise and neat. Compared with the bloated design of the conventional hinge buffer device installed in the hinge arm, the present invention improves the aesthetics of the furniture and protects the internal mechanism from external damage.

[0044] At the same time, the two dampers 8 intervene in the closing process, forming a unique damping curve: initial damping slows down the speed, and subsequent damping ensures a gentle closure. This segmented action not only makes the door closing process smoother and more stable, avoiding frustration, but also significantly reduces noise by controlling the impact force, which is particularly suitable for occasions that require a quiet environment, such as bedrooms or high-end furniture.

[0045] In addition, the slide plate 7 activates the damper by directly pushing the driving arm 31, replacing the traditional complex connecting rod mechanism, reducing the number of parts and the difficulty of assembly. This simplified transmission method reduces production costs and improves the reliability of the mechanical structure.

[0046] In summary, in this case, the driving arm 31 of the upper connecting rod 3 pushes the slide plate 7 to slide, and activates the two dampers 8 in the hinge cup 1 in turn, so as to achieve the segmented damping effect during the closing process. When the door leaf is closed, the first damper first slows down the speed, and the second damper then intervenes to ensure gentle closing; when opening, the damper resets itself and returns to the initial state. This process not only optimizes the function, but also brings the technical advantages of compact size, beautiful and neat appearance, smooth and stable operation, and quietness through design innovation, providing a higher quality solution for modern homes, so it can be widely promoted and used.

[0047] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. 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 hingedly connected via an upper connecting rod (3) and a lower connecting rod (4), and the upper connecting rod (3) and the lower connecting rod (4) swing relative to the hinge arm (2) and the hinge cup (1) to realize the opening and closing of the hinge, characterized in that: The hinge cup (1) has mounting grooves (11) extending through its body on both sides, and support shells (5) are fixedly mounted on the mounting grooves (11). The support shells (5) have a pressing plate (51) extending inwardly of the cup, and a limiting area (6) is formed by hollowing out between the pressing plate (51) and the inner bottom of the hinge cup (1); A slide plate (7) is slidably installed in the limiting area (6), and a damper (8) is installed between the slide plate (7) and the hinge cup (1); The upper connecting rod (3) is provided with a driving arm (31) extending in the direction of the slide plate (7); when the hinge is closed, the driving arm (31) pushes the slide plate (7) to move, thereby generating a damping effect when the hinge is closed.

2. A hydraulic buffer hinge according to claim 1, characterized in that: A plurality of elastic buckles (52) are provided on the inner side wall of the support shell (5), and correspondingly, a plurality of mounting holes (12) are provided on the outer side wall of the hinge cup (1), and the support shell (5) is fixed in the mounting holes (12) by means of the elastic buckles (52).

3. The hydraulic buffer hinge according to claim 1, characterized in that: A height limiting plate (53) extends downward from the bottom of the pressing plate (51); the height limiting plate (53) is supported on the inner bottom of the hinge cup (1); and the side wall of the sliding plate (7) slides on the inner side of the height limiting plate (53).

4. The hydraulic buffer hinge according to claim 1, characterized in that: A driving plate (71) is provided on the top of the slide plate (7) extending upwards, and the driving arm (31) is connected to the driving plate (71). The driving arm (31) pushes the slide plate (7) to move via the driving plate (71).

5. A hydraulic buffer hinge according to claim 1 or 4, characterized in that: A first damping plate (72) and a second damping plate (73) are extended outwardly from both sides of the slide plate (7); the first damping plate (72) and the second damping plate (73) respectively extend into the mounting grooves (11) on both sides to be connected to the damper (8).

6. A hydraulic buffer hinge according to claim 5, characterized in that: The support shell (5) is provided with a receiving chamber (54), the damper (8) is installed in the receiving chamber (54), a side wall of the receiving chamber (54) is provided with a clearance groove (55) which is in communication with the interior of the hinge cup (1), and the first damping plate (72) or the second damping plate (73) passes through the clearance groove (55) and enters the receiving chamber (54) to be connected with the damper (8).

7. The hydraulic buffer hinge according to claim 5, characterized in that: A first baffle (74) is provided at the front end of the first damping plate (72) extending upward, and a second baffle (75) is provided at the rear end of the second damping plate (73) extending upward, and a piston rod portion of the damper (8) extends into a movable stroke between the first baffle (74) and the second baffle (75).

8. The hydraulic buffer hinge according to claim 7, characterized in that: The damper (8) is a self-resetting hydraulic buffer cylinder.

9. The hydraulic buffer hinge according to claim 7, characterized in that: The slide plate (7) and the drive plate (71), the first damping plate (72), the second damping plate (73), the first baffle plate (74) and the second baffle plate (75) are integrally stamped from a metal plate.

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