Hydraulic buffering hinge

Abstract

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, a containing cavity is formed in the hinge arm, a damper is installed in the containing cavity, and the damper is connected with the hinge arm. The damper is connected with the linkage block through the pull arm, when the hinge is closed, the linkage block pushes the damper to move through the pull arm, and the damping effect is achieved when the hinge is closed. The hinge structure has the beneficial effects that the problem of stress concentration caused by a limited contact area between a hinge hole and a hinge shaft in a traditional hinge structure is avoided by improving the connection mode between the pull arm and the linkage block. The novel design effectively increases the contact area between parts, can disperse stress generated in the opening and closing process, reduces local abrasion, and prolongs the service life of the hinge.

Description

Technical Field

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

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

[0003] The hydraulic buffer hinge can provide 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 has a significant effect on improving the overall quality and user experience of furniture products. In the prior art, the structural design of the hydraulic buffer hinge is diverse, among which the common technical solution is usually connected to the lower connecting rod through a damper to achieve the buffering function. For example, the hydraulic buffer hinges disclosed in Chinese patent numbers: 2015207027842, 2011201225080 and 2016211894445 mainly adopt a structural design in which the damper is connected to the lower connecting rod through a pull rod.

[0004] However, although these existing technical solutions have achieved the buffering function to a certain extent, they still have some disadvantages that cannot be ignored in practical applications, which are specifically reflected in the following aspects: 1. In the existing structure, the contact area between the hinge hole and the hinge shaft is small, usually concentrated in a part of the circumference. This limited contact area causes the contact stress to be concentrated in a local area during the opening and closing process, which easily causes local stress concentration and aggravates wear. This not only shortens the service life of the hinge, but may also cause functional failure or reduce its buffering effect in long-term use.

[0005] 2. With the long-term use of the hinge, the contact surface between the hinge hole and the hinge shaft will gradually wear, causing the original matching gap to further expand. The increase in the gap will aggravate the shaking of the hinge. At the same time, due to the instability of the hinge structure, the buffering effect will gradually decrease, and it will be impossible to achieve stable buffering at a small angle. This wear process not only affects the service life of the hinge, but also has a negative impact on the user experience. Especially in occasions where precise control of slow closing is required, such as high-end furniture or precision doors and windows, the expansion of the gap seriously affects the aesthetics and sealing of the product. 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 prior art and provide a hydraulic buffer hinge which has a simple structure, is easy to use and can effectively extend the service life of the hinge.

[0007] The objective of the present invention is achieved in the following manner: 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 hinged to the 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 chamber is arranged in the hinge arm, a damper is installed in the accommodating chamber, the damper is connected to the linkage block through a pull arm, when the hinge is closed, the linkage block pushes the damper to move through the pull arm to realize the damping effect when the hinge is closed.

[0008] Furthermore: the linkage block is a boss protruding from the tail of the lower connecting rod, a hanging groove is arranged on the top of the boss, a front hanging plate is arranged at the front end of the pulling arm and is hooked in the hanging groove; a rear hanging plate is arranged at the rear end of the pulling arm, and the rear hanging plate is connected to the damper.

[0009] 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.

[0010] 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.

[0011] Furthermore, the pulling arm is made of a metal plate, and a clearance zone is arranged on the pulling arm corresponding to the position of the linkage block.

[0012] Furthermore: reinforcing ribs are stamped on the pull arm.

[0013] Furthermore: the linkage block is connected with a hinge shaft, and the pull arm is connected to the hinge shaft.

[0014] The beneficial effects of the present invention are: 1. Simple structure, low production cost and improved market competitiveness.

[0015] 2. By setting a connection structure between the damper and the linkage block, when the hinge is closed, the linkage block pushes the damper through the pull arm, thereby achieving an effective buffering effect on the hinge.

[0016] 3. By improving the connection between the pull arm and the linkage block, the stress concentration problem caused by the limited contact area between the hinge hole and the hinge shaft in the traditional hinge structure is avoided. The new design effectively increases the contact area between the components, can disperse the stress generated during the opening and closing process, reduce local wear, and extend the service life of the hinge. In addition, the problem of gap expansion caused by local wear is avoided, thereby maintaining the stable working performance of the hinge for a long time.

[0017] 4. The present invention adopts a design in which the linkage block and the pull arm are mutually hooked, which not only makes the hinge structure more compact, but also facilitates production and assembly. This connection method can reduce complex assembly procedures and improve production efficiency.

[0018] 5. The arm is made of metal sheet, and is provided with a clearing area and reinforcing ribs. This design improves the strength and rigidity of the arm, enhances its ability to resist bending and deformation, and further improves the durability and service life of the hinge. At the same time, the use of metal materials ensures that the hinge can still maintain its good mechanical properties under high-frequency use, reducing the risk of failure caused by deformation or wear during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the hinge in the open state of the present invention.

[0020] Figure 2 This is a cross-sectional view of the hinge structure in the open state of the present invention.

[0021] Figure 3 This is a schematic diagram of the hinge closed state in the present invention.

[0022] Figure 4 This is a cross-sectional view of the hinge structure in the closed state in the present invention.

[0023] Figure 5 It is a cross-sectional view of the structure of the present invention.

[0024] Figure 6 It is a structural exploded view of the present invention.

[0025] Figure 7 It is a structural schematic diagram of the second embodiment of the linkage block in the present invention.

[0026] Figure 8 It is a schematic diagram of the pull arm structure in the present invention. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings. A hydraulic buffer hinge includes 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 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 extends 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, the damper 7 is connected to the linkage block 5 through a pull arm 8, when the hinge is closed, the linkage block 5 pushes the damper 7 to move through the pull arm 8 to realize the damping effect when the hinge is closed.

[0028] In one of the embodiments: the linkage block 5 is a boss protruding from the tail of the lower connecting rod 3, a hanging groove 51 is provided on the top of the boss, a front hanging plate 81 is provided at the front end of the pulling arm 8 and is hooked in the hanging groove 51; 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, the pulling arm 8 is made of a metal plate, and a clearance area 83 is provided on the pulling arm 8 at a position corresponding to the linkage block 5 .

[0032] In one embodiment, a reinforcing rib 84 is also stamped on the pull arm 8 .

[0033] In one embodiment, the linkage block 5 is connected to a hinge shaft 52, and the pull arm 8 is connected to the hinge shaft.

[0034] Working principle: In the structure of this hinge, the hinge cup 1 and the hinge arm 9 are hingedly connected by the upper connecting rod 2 and the lower connecting rod 3. The opening and closing action of the hinge is realized by the swing of the upper and lower connecting rods. When the hinge is opened, the upper connecting rod and the lower connecting rod rotate around their hinge points, so that the hinge arm moves away from the hinge cup and the cabinet door is opened; conversely, when the cabinet door is closed.

[0035] When the hinge is closed, the lower connecting rod drives the linkage block to tilt upward, and pulls the piston rod of the damper through the pull arm, causing the oil in the damper to flow, thereby producing a hydraulic damping effect. This damping effect slows down the closing speed of the hinge, provides a smooth slow closing function, and avoids the impact and noise caused by the rapid closing of the cabinet door.

[0036] It should be noted that: Figure 1-6 As shown, the front end of the pull arm 8 is connected to the hanging groove 51 of the linkage block 5 through the front hanging plate 81, and the rear end is connected to the piston rod of the damper 7 through the rear hanging plate 82. When the hinge is closed, the linkage block pushes the pull arm, and the pull arm drives the damper to work. Among them, the contact area between the hanging groove 51 and the front hanging plate 81 is large, which can disperse the stress generated during the opening and closing process, reduce local wear, and extend the service life of the hinge. In addition, the problem of gap expansion caused by local wear is avoided, thereby maintaining the stable working performance of the hinge for a long time.

[0037] Similarly, if Figure 7 As shown, the linkage block 5 is connected to a hinge shaft 52, and the pull arm 8 is connected to the hinge shaft. Specifically, the linkage block is a hinge seat arranged at the tail of the lower connecting rod, and the hinge shaft is installed transversely in the hinge seat. The front hanging plate at the front end of the pull arm is directly hooked to the hinge shaft and connected and fixed thereto. Also, because the contact area between the hinge shaft and the front hanging plate is large, the stress generated during the opening and closing process can be dispersed, local wear is reduced, and the service life of the hinge is extended.

[0038] Furthermore, the housing chamber 6 in this case is provided with a guide sleeve 10 and a guide groove 11, so that the arm can slide smoothly in the guide groove when closing, ensuring that the relative movement of the arm and the damper is smoother and more precise. This design effectively avoids the problem of offset in the movement of the arm and improves the working stability of the hinge. At the same time, the housing chamber can also play a role in fixing the damper, so that the thrust received by the damper during operation can be transmitted to the hinge arm through the guide sleeve, so that the damper is evenly stressed and its working stability is ensured.

[0039] In summary, the hook structure of the linkage block 5 and the pull arm 8 is adopted in this case, which effectively increases the contact area between the pull arm and the linkage block, reduces stress concentration and local wear, and thus improves the stability and durability of the hinge, so it can be widely promoted and used.

[0040] 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), 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 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), and a receiving chamber (6) is provided in the hinge arm (9). A damper (7) is installed in the receiving chamber (6), and the damper (7) is connected to the linkage block (5) through a pull arm (8). When the hinge is closed, the linkage block (5) pushes the damper (7) to move through the pull arm (8), thereby achieving a damping effect when the hinge is closed.

2. A hydraulic buffer hinge according to claim 1, characterized in that: The linkage block (5) is a boss protruding from the rear of the lower connecting rod (3), a hanging groove (51) is provided on the top of the boss, a front hanging plate (81) is provided at the front end of the pulling arm (8) and is hooked in the hanging groove (51); 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).

3. A hydraulic buffer hinge according to claim 2, 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.

4. The 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).

5. A hydraulic buffer hinge according to any one of claims 1 to 4, characterized in that: The pulling arm (8) is made of a metal plate, and a clearance area (83) is provided on the pulling arm (8) at a position corresponding to the linkage block (5).

6. A hydraulic buffer hinge according to claim 5, characterized in that: The pull arm (8) is also provided with a reinforcing rib (84) by stamping.

7. The hydraulic buffer hinge according to claim 1, characterized in that: The linkage block (5) is connected to a hinge shaft (52), and the pull arm (8) is connected to the hinge shaft.

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