Improved structure of hydraulic buffer hinge

Abstract

An improved structure of a hydraulic buffering hinge comprises a hinge cup, an upper connecting rod and a lower connecting rod are installed on the hinge cup in a hinged mode, the other end of the upper connecting rod and the other end of the lower connecting rod are hinged to a hinge arm, a spring is arranged between the upper connecting rod and the hinge arm, the tail of the lower connecting rod extends backwards to form a linkage block, and a containing cavity is formed in the hinge arm. A damper is mounted in the accommodating cavity; a linkage arm is further installed in the hinge arm in a hinged mode, one end of the linkage arm is connected with the linkage block, and the other end of the linkage arm is connected with the pull arm. When the hinge is closed, the linkage block pushes the linkage arm to swing, the damper is indirectly pushed to move through the pull arm, and the damping effect is achieved when the hinge is closed. The utility model has the beneficial effects that the linkage block is designed at the tail part of the lower connecting rod and is connected with the pull arm through the linkage arm, and then the damper is pushed by the pull arm to buffer. Compared with a traditional hydraulic hinge structure, the linkage design is more complex and exquisite, and force transmission is more stable.

Description

Technical Field

[0001] The utility model relates to a hinge, in particular to an improved structure of a hydraulic buffer hinge. Background Art

[0002] Hardware hinges, as key components connecting cabinet doors and cabinet bodies, are widely used in furniture, doors, and windows. Especially in modern furniture, doors, and windows, hinges must not only facilitate the opening and closing of cabinet doors but also provide a cushioning effect to prevent impact on the cabinet body, door, and user when the door closes quickly. Therefore, hydraulic hinges with cushioning functions are becoming a mainstream product in the market.

[0003] Hydraulic buffer hinges utilize a built-in hydraulic damping device to cushion and decelerate the closing motion of cabinet doors, enabling a smooth, controlled opening and closing process. This design effectively reduces the clatter and impact force caused by rapid door closing, enhancing the overall quality and user experience of the furniture. Consequently, hydraulic buffer hinges are widely used in applications requiring a smooth closing effect, such as high-end furniture and precision doors and windows.

[0004] A variety of hydraulic buffer hinge designs exist in the prior art. Most achieve this by connecting a damper to a lower link or pull rod. For example, Chinese Patents Nos. 2015207027842, 2011201225080, and 2016211894445 disclose hydraulic buffer hinge structures connected to a lower link via a damper. These prior art solutions address the impact of rapidly closing cabinet doors and improve the user experience of the furniture.

[0005] However, although the existing hydraulic buffer hinge can provide a certain buffer function in structure, it still has some obvious shortcomings and deficiencies in practical application, which are mainly manifested in the following aspects:

[0006] 1. In existing hydraulic buffer hinge designs, the contact area between the hinge hole and the hinge shaft is small, typically concentrated only along a portion of the hinge shaft's circumference. This limited contact area results in localized contact stress, which can easily lead to localized stress concentration and, in turn, increased wear. Frequent opening and closing of the hinge further increases wear in the contact area, shortening the hinge's service life. Over extended use, wear can also lead to functional failure of the hinge, particularly a significant reduction in its cushioning effectiveness.

[0007] 2. Over time, the clearance between the hinge hole and the hinge shaft gradually increases, affecting the original stability and precision. This widening clearance makes the hinge more susceptible to wobble during operation, which not only affects the cushioning effect but also reduces the ability to close smoothly at tight angles. This wobble is particularly prominent in applications that require precise and slow closing, such as high-end furniture and precision doors and windows. Instability in the hinge structure can reduce the sealing of cabinet doors or windows, affecting both aesthetics and user experience.

[0008] 3. As the hinge ages, the performance of the internal damper gradually degrades, especially after play develops in the hinge. This further reduces the damper's effectiveness. This prevents the hinge from providing a stable cushioning effect during slow closing, preventing the door or window from achieving the desired deceleration. This shortcoming is particularly pronounced in applications requiring long-term use or high-frequency operation, impacting the long-term reliability and user experience of the hydraulic cushioning hinge.

[0009] In view of the above problems, the hydraulic buffer hinge in the existing technology still has deficiencies in service life, stability and buffering effect, and is in urgent need of further improvement and optimization to improve its durability and performance stability in long-term use. Utility Model Content

[0010] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide an improved structure of a hydraulic buffer hinge which has a simple structure, is easy to use and can effectively extend the service life of the hinge.

[0011] The purpose of the utility model is achieved in the following manner: an improved structure of a hydraulic buffer hinge, which includes a hinge cup, an upper connecting rod and a lower connecting rod hingedly mounted on the hinge cup, the other ends of the upper connecting rod and the lower connecting rod being hingedly connected to a hinge arm, a spring being provided between the upper connecting rod and the hinge arm, the upper connecting rod and the lower connecting rod swinging relative to the hinge cup and the hinge arm to realize the opening and closing of the hinge, a linkage block extending rearward from the tail of the lower connecting rod, an accommodating chamber being provided in the hinge arm, and a damper being installed in the accommodating chamber;

[0012] A linkage arm is also hingedly installed in the hinge arm, one end of the linkage arm is connected to the linkage block, and the other end of the linkage arm is connected to the pulling arm; when the hinge is closed, the linkage block pushes the linkage arm to swing, and indirectly pushes the damper to move through the pulling arm, thereby achieving a damping effect when the hinge is closed.

[0013] Furthermore, the middle part of the linkage arm is hingedly installed in the hinge arm, the front end of the linkage arm extends forward with a front arm in contact with the linkage block, and the rear end of the linkage arm extends backward with a rear arm connected to the pulling arm.

[0014] Furthermore, a receiving platform is extended from the front end of the pulling arm to both sides thereof, and the rear arm is pressed on the receiving platform; a rear hanging plate is provided at the rear end of the pulling arm, and the rear hanging plate is connected to the damper.

[0015] Furthermore, the damper is a compression damping type hydraulic damper, the rear hanging plate is hooked on the piston rod of the damper, and the cylinder part of the damper is fixedly connected to the hinge arm.

[0016] Furthermore, a guide sleeve is fixedly installed in the accommodating cavity, the damper is installed in the guide sleeve, a guide groove is provided in the guide sleeve, and the pulling arm is slidably installed in the guide groove.

[0017] Furthermore, the pull arm is also stamped with reinforcing ribs.

[0018] The beneficial effects of the utility model are:

[0019] 1. Simple structure, low production cost and improved market competitiveness.

[0020] 2. This utility model incorporates a linkage block at the tail end of the lower link, connected to the pull arm via a linkage arm. The pull arm then pushes the damper to provide cushioning. This linkage design is more complex and sophisticated than traditional hydraulic hinges, resulting in smoother force transmission. This linkage structure allows for more uniform force transmission during the hinge closing process, enhancing the cushioning effect and effectively reducing wear caused by localized force concentration.

[0021] 3. This utility model incorporates a housing within the hinge arm and secures the damper via a guide sleeve, ensuring the damper's stable position during operation. The guide groove guides the sliding movement of the arm. This design effectively reduces friction between the arm and damper, preventing structural damage caused by component shake, thereby extending the service life of the hinge and damper.

[0022] 4. The hinge structure of this utility model reduces interference between components by adding linkage blocks and clearance zones. Furthermore, the arm is equipped with reinforcing ribs, further enhancing the strength and durability of the structure. This structural design effectively avoids the shaking and wear problems caused by long-term use of the hinge, ensuring that the hinge can maintain a stable cushioning effect under long-term and frequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the hinge in the open state of the present invention.

[0024] Figure 2 This is a cross-sectional view of the structure of the hinge in the open state in the utility model.

[0025] Figure 3 This is a schematic diagram of the hinge closed state in the present invention.

[0026] Figure 4 This is a cross-sectional view of the hinge structure in the closed state in the present invention.

[0027] Figure 5 This is a structural exploded view of the utility model.

[0028] Figure 6 This is a schematic diagram of the pull arm structure of the utility model. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings. An improved structure of a hydraulic buffer hinge comprises a hinge cup 1, on which an upper connecting rod 2 and a lower connecting rod 3 are hingedly mounted. The other ends of the upper connecting rod 2 and the lower connecting rod 3 are hingedly connected to a hinge arm 9. A spring 4 is disposed between the upper connecting rod 2 and the hinge arm 9. The upper connecting rod 2 and the lower connecting rod 3 swing relative to the hinge cup 1 and the hinge arm 9 to open and close the hinge. A linkage block 5 extends rearward from the tail of the lower connecting rod 3. A receiving chamber 6 is disposed within the hinge arm 9, and a damper 7 is mounted within the receiving chamber 6.

[0030] A linkage arm 12 is also hingedly installed in the hinge arm 9, one end of the linkage arm 12 is connected to the linkage block 5, and the other end of the linkage arm 12 is connected to the pulling arm 8; when the hinge is closed, the linkage block 5 pushes the linkage arm 12 to swing, and indirectly pushes the damper 7 to move through the pulling arm 8, thereby achieving a damping effect when the hinge is closed.

[0031] In one embodiment, the middle part of the linkage arm 12 is hingedly installed in the hinge arm 9, the front end of the linkage arm 12 extends forward with a front arm 13 to contact the linkage block 5, and the rear end of the linkage arm 12 extends backward with a rear arm 14 to connect with the pulling arm 8.

[0032] In one embodiment, a receiving platform 81 extends from the front end of the pulling arm 8 to both sides thereof, and the rear arm 14 is pressed on the receiving platform 81 ; a rear hanging plate 82 is provided at the rear end of the pulling arm 8 , and the rear hanging plate 82 is connected to the damper 7 .

[0033] In one embodiment, the damper 7 is a compression damping type hydraulic damper, the rear hanging plate 82 is hooked on the piston rod of the damper 7, and the cylinder part of the damper 7 is fixedly connected to the hinge arm.

[0034] In one embodiment, a guide sleeve 10 is fixedly installed in the accommodating chamber 6 , the damper 7 is installed in the guide sleeve 10 , a guide groove 11 is provided in the guide sleeve 10 , and the pulling arm 8 is slidably installed in the guide groove 11 .

[0035] In one embodiment, a reinforcing rib 84 is further stamped on the pull arm 8 .

[0036] Working Principle: This hydraulic buffer hinge consists of several key components, including a hinge cup 1, an upper connecting rod 2, a lower connecting rod 3, a hinge arm 9, a spring 4, a linkage block 5, a receiving chamber 6, a damper 7, a pull arm 8, and a linkage arm 12. Throughout the hinge's operation, these components work together through a sophisticated linkage structure, ensuring smooth opening and closing of the cabinet door and providing a buffered opening and closing function.

[0037] When the hinge is open, the cabinet door rotates by the swinging of the upper and lower connecting rods 2 and 3 relative to the hinge cup 1 and hinge arm 9. One end of the upper and lower connecting rods 2 and 3 is hinged to the hinge arm 9, while the other end is hinged to the hinge cup 1. This hinged structure allows the cabinet door to be opened and closed flexibly.

[0038] When the hinge is closed, the linkage block 5 extending backward from the tail of the lower link 3 will push the linkage arm 12 in the hinge arm 9 to move as the lower link moves. One end of the linkage arm 12 is connected to the linkage block 5, and the other end is connected to the pulling arm 8 through the rear arm 14. As the linkage arm 12 swings around its hinge point. The pulling arm 8 cooperates with the rear arm 14 through the receiving platform 81 at its front end to push the piston rod of the damper 7 to displace. The damper 7 is a compression damping type hydraulic damper. When pressure is applied to the pulling arm 8, the piston rod begins to compress, and the hydraulic oil inside the damper flows slowly through a specific channel, thereby providing a hydraulic damping effect. This damping effect can provide effective deceleration and buffering when the cabinet door is closed, avoiding the impact force and noise generated by the rapid closing of the cabinet door.

[0039] The damper 7 is stably mounted by a guide sleeve 10 secured within the housing 6. The sleeve 10 is provided with a guide slot 11 within which the arm 8 slides. The guide slot limits the arm's movement, ensuring smoother and more precise motion and preventing lateral movement or unnecessary friction. This design significantly increases the hinge's service life.

[0040] Compared with traditional technologies, the present invention achieves smoother force transmission through the sophisticated linkage between the linkage block 5, linkage arm 12, and pull arm 8, thus avoiding the impact and wear caused by direct force application. During the hinge closing process, the damper 7 generates a hydraulic buffering effect through the movement of the piston rod, ensuring deceleration and smooth closing of the cabinet door. Compared with traditional hydraulic buffer hinges, the present invention can provide a more precise buffering effect in the final stage of cabinet door closing, avoiding the impact sound and impact on the cabinet door and cabinet body caused by rapid closing, and improving the user experience.

[0041] Furthermore, the damper 7 of the utility model, precisely guided by the guide sleeve 10 and guide groove 11, ensures smooth movement of the arm 8 and damper, avoiding wear and tear caused by shaking or friction between components. This structural design effectively prevents structural instability and wear caused by long-term use, thereby significantly extending the life of the hinge and ensuring its stability during long-term, high-frequency use.

[0042] At the same time, the arm 8 of the present invention is provided with reinforcing ribs 84, which not only improve the structural strength of the arm, but also enhance its bending and compression resistance. The design of the reinforcing ribs can provide additional support when the hinge is subjected to external forces, thereby preventing structural deformation.

[0043] The accommodating cavity 6 used in this invention tightly embeds the damper 7 inside the hinge arm 9, while the linkage arm 12 and the pull arm 8 provide a buffering function. This compact structural design not only saves space on the entire hinge, but is also suitable for use in various cabinet doors and windows, especially in concealed hinge applications where space is a concern.

[0044] This new hydraulic buffer hinge achieves precise and stable cushioning through the coordinated use of components such as a linkage block, linkage arm, pull arm, and damper. This solves the problems of localized stress concentration, wear, and reduced cushioning effectiveness found in existing technologies. Its unique guide structure and the use of reinforcing ribs significantly extend the hinge's service life and stability, making it suitable for applications requiring high cushioning precision and durability.

[0045] 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 to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. An improved structure of a hydraulic buffer hinge, comprising a hinge cup (1), an upper connecting rod (2) and a lower connecting rod (3) being hingedly mounted on the hinge cup (1), the other ends of the upper connecting rod (2) and the lower connecting rod (3) being hingedly connected to a hinge arm (9), a spring (4) being provided between the upper connecting rod (2) and the hinge arm (9), the upper connecting rod (2) and the lower connecting rod (3) swinging relative to the hinge cup (1) and the hinge arm (9) to realize the opening and closing of the hinge, and characterized in that: A linkage block (5) is extended backward from the tail of the lower connecting rod (3), and a receiving chamber (6) is provided in the hinge arm (9), wherein a damper (7) is installed in the receiving chamber (6); A linkage arm (12) is also hingedly installed in the hinge arm (9), one end of the linkage arm (12) is connected to the linkage block (5), and the other end of the linkage arm (12) is connected to the pull arm (8); when the hinge is closed, the linkage block (5) pushes the linkage arm (12) to swing, and indirectly pushes the damper (7) to move through the pull arm (8), thereby achieving a damping effect when the hinge is closed.

2. The improved structure of the hydraulic buffer hinge according to claim 1, characterized in that: The middle part of the linkage arm (12) is hingedly mounted in the hinge arm (9), the front end of the linkage arm (12) extends forward with a front arm (13) in contact with the linkage block (5), and the rear end of the linkage arm (12) extends backward with a rear arm (14) in connection with the pulling arm (8).

3. The improved structure of the hydraulic buffer hinge according to claim 2, characterized in that: The front end of the pulling arm (8) is provided with a receiving platform (81) extending to both sides thereof, and the rear arm (14) is pressed on the receiving platform (81); the rear end of the pulling arm (8) is provided with a rear hanging plate (82), and the rear hanging plate (82) is connected to the damper (7).

4. The improved structure of the hydraulic buffer hinge according to claim 3, characterized in that: The damper (7) is a compression damping type hydraulic damper, the rear hanging plate (82) is hooked on the piston rod of the damper (7), and the cylinder part of the damper (7) is fixedly connected to the hinge arm.

5. The improved structure of the hydraulic buffer hinge according to claim 1, characterized in that: A guide sleeve (10) is fixedly installed in the accommodating chamber (6), the damper (7) is installed in the guide sleeve (10), and a guide groove (11) is provided in the guide sleeve (10), and the pulling arm (8) is slidably installed in the guide groove (11).

6. The improved structure of the hydraulic buffer hinge according to claim 1, characterized in that: The pull arm (8) is also provided with a reinforcing rib (84) by stamping.

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