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 connecting rod has the beneficial effects that the linkage block is designed at the tail of the lower connecting rod and connected with the pull arm through the linkage arm, and then the damper is pushed through the pull arm for buffering. 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 invention relates to a hinge, in particular to an improved structure of a hydraulic buffer hinge. Background Art

[0002] As the key component connecting the cabinet door and the cabinet body, the hardware hinge is widely used in furniture, doors and windows, etc. Especially in modern furniture and doors and windows, the use of hinges not only needs to realize the opening and closing function of the cabinet door, but also requires a certain buffering effect to prevent the cabinet door from causing impact on the cabinet body, cabinet door and user when closing quickly. Therefore, hydraulic hinges with buffering function have gradually become the mainstream products in the market.

[0003] The hydraulic buffer hinge provides buffering and deceleration effects during the closing process of the cabinet door through the built-in hydraulic damping device, thereby achieving a smooth and controllable opening and closing process. This design can effectively avoid the impact sound and impact force caused by the rapid closing of the cabinet door, and improve the overall quality and user experience of the furniture product. Therefore, hydraulic buffer hinges have been widely used in high-end furniture, precision doors and windows and other occasions that require a high slow closing effect.

[0004] In the prior art, there are various design schemes for hydraulic buffer hinges. Most technical schemes realize the buffering function by connecting a damper with a lower connecting rod or a pull rod. For example, Chinese patent Nos. 2015207027842, 2011201225080 and 2016211894445 disclose hydraulic buffer hinge structures connected to a lower connecting rod through a damper. These prior arts solve the impact problem when the cabinet door is closed quickly to a certain extent and improve the use 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: 1. In the design of existing hydraulic buffer hinges, the contact area between the hinge hole and the hinge shaft is small, usually concentrated only in a part of the hinge shaft circumference. This limited contact area causes the contact stress to be concentrated in a local area, which easily leads to local stress concentration and aggravates wear. With the frequent opening and closing of the hinge, the wear of the contact area will further increase, resulting in a shortened service life of the hinge. During long-term use, wear may also cause the hinge to fail, especially a significant reduction in the buffering effect.

[0006] 2. As the use time increases, the clearance between the hinge hole and the hinge shaft will gradually increase, affecting the original stability and precision. The expansion of the gap makes the hinge easy to shake during operation, which not only affects the buffering effect, but also reduces the ability to close smoothly at a small angle. This shaking phenomenon is particularly prominent in scenes that require precise slow closing, such as high-end furniture and precision doors and windows. The instability of the hinge structure will cause the sealing of the cabinet door or window to decrease, thus affecting the aesthetics and user experience.

[0007] 3. As the hinge is used, the performance of the internal damper will gradually decay, especially after the hinge has a gap, the working effect of the damper will further decrease. This makes the hinge unable to provide a stable buffering effect when closing slowly, resulting in the cabinet door or door window unable to achieve the ideal deceleration effect. This shortcoming is particularly evident in applications that require long-term use or high-frequency operation, affecting the long-term reliability and user experience of the hydraulic buffer hinge.

[0008] In view of the above problems, the hydraulic buffer hinge in the prior art 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. Summary of the invention

[0009] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an improved structure of a hydraulic buffer hinge which is simple in structure, easy to use and can effectively extend the service life of the hinge.

[0010] The object of the present invention 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 are hingedly installed on the hinge cup, the other ends of the upper connecting rod and the lower connecting rod are hingedly connected to a hinge arm, a spring is arranged between the upper connecting rod and the hinge arm, the upper connecting rod and the lower connecting rod swing relative to the hinge cup and the hinge arm to realize the opening and closing of the hinge, a linkage block is extended backward at the tail of the lower connecting rod, an accommodating cavity is arranged in the hinge arm, and a damper is installed in the accommodating cavity; 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.

[0011] 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 with the pulling arm.

[0012] 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 arranged at the rear end of the pulling arm, and the rear hanging plate is connected to the damper.

[0013] 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.

[0014] Furthermore: a guide sleeve is fixedly installed in the accommodating cavity, the damper is installed in the guide sleeve, a guide groove is also arranged in the guide sleeve, and the pulling arm is slidably installed in the guide groove.

[0015] Furthermore: reinforcing ribs are stamped on the pull arm.

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

[0017] 2. The present invention designs a linkage block at the tail of the lower link, connects it to the pull arm through a linkage arm, and then pushes the damper through the pull arm for buffering. This linkage design is more complex and sophisticated than the traditional hydraulic hinge structure, making the force transmission more stable. Through this linkage structure, the hinge can transmit the force more evenly during the closing process, thereby improving the buffering effect and effectively reducing the wear problem caused by local force concentration.

[0018] 3. The present invention sets a receiving cavity in the hinge arm and fixes the damper with a guide sleeve to ensure the stability of the damper during operation and guide the sliding movement of the pull arm with a guide groove. This design can effectively reduce the friction between the pull arm and the damper, avoid structural damage caused by component shaking, and thus extend the service life of the hinge and the damper.

[0019] 4. The hinge structure of the present invention reduces the mutual interference between the components by adding linkage blocks and avoidance areas, and the arm is also provided with reinforcing ribs to further improve the strength and durability of the structure. Such a 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 buffering effect under long-term and high-frequency use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the hinge in the open state of the present invention.

[0021] Figure 2 This is a cross-sectional view of the hinge structure in the open state of the present invention.

[0022] Figure 3 This is a schematic diagram of the hinge closed state in the present invention.

[0023] Figure 4 This is a cross-sectional view of the hinge structure in the closed state in the present invention.

[0024] Figure 5 It is a structural exploded view of the present invention.

[0025] Figure 6 It is a schematic diagram of the pull arm structure in the present invention. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings. An improved structure of a hydraulic buffer hinge, comprising a hinge cup 1, an upper connecting rod 2 and a lower connecting rod 3 are hingedly mounted on the hinge cup 1, the other ends of the upper connecting rod 2 and the lower connecting rod 3 are hingedly mounted to a hinge arm 9, a spring 4 is arranged 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 realize the opening and closing of the hinge, a linkage block 5 is extended backward from the tail of the lower connecting rod 3, a receiving chamber 6 is arranged in the hinge arm 9, 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 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.

[0027] 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.

[0028] In one embodiment, a receiving platform 81 is extended 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 .

[0029] 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.

[0030] In one of the embodiments: a guide sleeve 10 is fixedly installed in the accommodating cavity 6, the damper 7 is installed in the guide sleeve 10, a guide groove 11 is also provided in the guide sleeve 10, and the pulling arm 8 is slidably installed in the guide groove 11.

[0031] In one embodiment, a reinforcing rib 84 is also stamped on the pull arm 8 .

[0032] Working principle: The hydraulic buffer hinge of the present invention is composed of multiple key components, including hinge cup 1, upper connecting rod 2, lower connecting rod 3, hinge arm 9, spring 4, linkage block 5, accommodating chamber 6, damper 7, pull arm 8, linkage arm 12 and other components. During the entire hinge working process, the various components are linked by a sophisticated linkage structure to achieve the smooth opening and closing of the cabinet door and the buffering function.

[0033] When the hinge is in the open state, the cabinet door rotates by the swing of the upper connecting rod 2 and the lower connecting rod 3 relative to the hinge cup 1 and the hinge arm 9. One end of the upper connecting rod 2 and the lower connecting rod 3 is hinged to the hinge arm 9, and the other end is hinged to the hinge cup 1. Through this hinge structure, the cabinet door can be opened and closed flexibly.

[0034] When the hinge is closed, the linkage block 5 extending backward from the tail of the lower connecting rod 3 will push the linkage arm 12 in the hinge arm 9 to move as the lower connecting rod 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 move. The damper 7 is a compression damping type hydraulic damper. When the pulling arm 8 applies pressure, 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.

[0035] The damper 7 is stably installed by a guide sleeve 10 fixed in the accommodating cavity 6, and a guide groove 11 is provided in the guide sleeve 10, and the pull arm 8 is slidably installed in the guide groove. The function of the guide groove is to limit the moving direction of the pull arm, ensure that the movement of the pull arm is more stable and accurate, and avoid lateral shaking or unnecessary friction. This design greatly improves the service life of the hinge.

[0036] Compared with the conventional technology, the present invention uses the sophisticated linkage between the linkage block 5, the linkage arm 12 and the pull arm 8 to make the force transmission smoother, thus avoiding the impact and wear caused by direct force application. During the closing process of the hinge, the damper 7 generates a hydraulic buffering effect through the movement of the piston rod, thus ensuring the deceleration and smoothness of the cabinet door when closing. Compared with the conventional hydraulic buffer hinge, the present invention can provide a more precise buffering effect in the final stage of the cabinet door closing, avoiding the impact sound and the impact on the cabinet door and cabinet body caused by rapid closing, thus improving the user experience.

[0037] In addition, the damper 7 of the invention ensures the smooth movement of the pull arm 8 and the damper through the precise guidance of the guide sleeve 10 and the guide groove 11, avoiding wear caused by shaking or friction between components. This structural design can effectively prevent structural instability and wear problems caused by long-term use, thereby greatly extending the service life of the hinge and ensuring its stability in long-term high-frequency use.

[0038] At the same time, the arm 8 of the present invention is provided with reinforcing ribs 84, which not only improves the structural strength of the arm, but also enhances its bending and compression resistance. The design of the reinforcing ribs can provide additional support when the hinge is subjected to external force to avoid structural deformation.

[0039] The accommodating cavity 6 used in the present invention tightly embeds the damper 7 into the hinge arm 9, and at the same time realizes the buffering function through the linkage arm 12 and the pull arm 8. This compact structural design not only saves the space occupied by the hinge as a whole, but is also suitable for use in various cabinet doors and doors and windows, especially in hidden hinge applications with high space requirements, and has obvious advantages.

[0040] The hydraulic buffer hinge of the present invention achieves accurate and stable buffering effect through the coordination of linkage block, linkage arm, pulling arm and damper, solving the problems of local stress concentration, wear and reduced buffering effect in the prior art. Its unique guide structure design and the application of reinforcing ribs greatly improve the service life and stability of the hinge, and is suitable for applications requiring high buffering accuracy and durability.

[0041] 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. 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 arranged 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, characterized in that: A linkage block (5) is extended backward from the tail of the lower connecting rod (3), a receiving chamber (6) is provided in the hinge arm (9), and 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 a hydraulic buffer hinge according to claim 1, characterized in that: 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) in contact with the linkage block (5), and the rear end of the linkage arm (12) extends backward with a rear arm (14) connected to the pulling arm (8).

3. The improved structure of a hydraulic buffer hinge according to claim 2, characterized in that: A receiving platform (81) is extended 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).

4. The improved structure of the hydraulic buffer hinge according to claim 3 is 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 a hydraulic buffer hinge according to claim 1, characterized in that: A guide sleeve (10) is fixedly installed in the accommodating cavity (6), the damper (7) is installed in the guide sleeve (10), a guide groove (11) is also provided in the guide sleeve (10), and the pulling arm (8) is slidably installed in the guide groove (11).

6. The improved structure of a 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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