Hinge with buffering function

Abstract

A hinge with a buffering function 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, a containing cavity is formed in the hinge arm, a guide shell is installed in the containing cavity, a sliding way is arranged in the guide shell, and a sliding block is installed in the sliding way in a sliding mode. The driving arm is arranged at the tail of the lower connecting rod and connected with the sliding block through a pulling arm, the damper is arranged in the containing cavity, when the hinge is closed, the driving arm pulls the sliding block to move through the pulling arm, and the sliding block is used for pushing the damper to move to generate a damping effect when the hinge is closed. The damping hinge has the beneficial effects that the guide shell and the sliding way are arranged in the hinge arm, the sliding block is installed in the sliding way, and the sliding block makes contact with the damper, so that a more stable buffering structure is formed. When the hinge is closed, the sliding block is connected with the driving arm through the pulling arm to drive the damper to move, and the stable buffering effect can be effectively provided.

Description

Technical Field

[0001] The invention relates to the technical field of hardware hinges, in particular to a hinge with a buffer function. Background Art

[0002] As an important component connecting the cabinet door and the cabinet body, hardware hinges are widely used in furniture, doors and windows and other fields. In daily applications, hinges are frequently opened and closed, and need to have a certain buffering function to prevent the cabinet door from causing impact on the connecting parts or users when closing quickly. For this reason, hydraulic hinges with buffering function have gradually become the mainstream of the market. Hydraulic buffer hinges can provide smooth and controllable opening and closing actions, and are highly favored in the furniture industry.

[0003] In the prior art, hydraulic buffer hinges usually adopt a structural design in which a damper is connected to a lower connecting rod through a pull rod, which is clearly disclosed in Chinese Patent Nos. 2015207027842, 2011201225080 and 2016211894445. The typical design of the prior art is that hinge holes are provided at both ends of the pull rod, one end is connected to the damper through the hinge hole, and the other end is connected to the hinge shaft on the lower connecting rod through the hinge hole. Although this structure achieves a buffering effect, it still has many defects in actual applications, which seriously affects the performance and durability of the hydraulic buffer hinge.

[0004] The main disadvantages of existing hydraulic buffer hinges are as follows: 1. The through-hole hinge hole and the hinge shaft in the existing hydraulic hinges are usually coaxial. However, due to the limitations of manufacturing tolerances and assembly accuracy, the size of the gap is difficult to accurately control. If the gap between the through-hole and the hinge shaft is too small, the hinge is prone to jamming during the opening and closing process, resulting in unsmooth opening and closing; if the gap is too large, the shaking between the through-hole and the hinge shaft will increase significantly when the hinge is closed, affecting its stability and user experience. Therefore, it is difficult to ensure an ideal fit during manufacturing and assembly, which has become the primary disadvantage of the prior art.

[0005] 2. The contact area between the hinge hole and the hinge shaft in the prior art is small, and the contact force is mainly concentrated in a small area of ​​the hinge shaft circumference. This design leads to concentrated contact stress and increased wear during the opening and closing of the hinge. As the contact parts wear, the service life of the hinge is shortened, resulting in frequent repairs and replacements, which increases the maintenance cost for users.

[0006] 3. After long-term use, the contact surface between the hinge hole and the hinge shaft gradually wears, and the gap expands. This wear effect causes the hinge to shake more when closed and reduces stability. As wear further develops, the hinge's cushioning effect decreases significantly, especially during the slow closing process at a small angle, it is difficult to maintain a stable cushion, affecting the user experience. At the same time, the widening gap will also reduce the stability of the overall structure, making it prone to loosening or even failure, further affecting the reliability of the product.

[0007] 4. Due to the gap matching problem, small contact area and gap expansion caused by wear, the hinges in the prior art have obvious deficiencies in achieving the buffering function, especially when accurately controlling the opening and closing angles. In application scenarios that require a slow-closing function, the excessive gap and the resulting shaking not only affect the appearance, but also have an adverse effect on the sealing and service life of the cabinet door, especially the accuracy of the slow-closing is difficult to achieve.

[0008] In summary, the existing hydraulic buffer hinge has many problems in structural design, especially in manufacturing accuracy, wear resistance and service life. In order to solve these problems, it is a key problem to be solved in the current technical field to provide an improved hinge structure design, especially to improve the matching accuracy of the hinge, increase the contact area, reduce wear and improve the buffering effect. Summary of the invention

[0009] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a hinge with a buffer function which has a simple structure, is easy to use, and realizes a more stable and reliable hinge action and a long service life.

[0010] The object of the present invention is achieved in the following manner: A hinge with a buffer function, 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, and the upper connecting rod and the lower connecting rod move relative to the hinge cup and the hinge arm to realize the opening and closing of the hinge: The hinge arm is provided with a receiving cavity, a guide shell is installed in the receiving cavity, a slideway is provided in the guide shell, and a slider is slidably installed in the slideway; It also includes a driving arm arranged at the tail of the lower connecting rod, the driving arm is connected to the sliding block through the pulling arm, and pulls the sliding block to move; Also included is a damper disposed in the accommodating chamber, wherein a cylinder portion or a piston rod portion of the damper extends into the slideway and contacts the slider; When the hinge is closed, the driving arm pulls the slider to move through the pulling arm, and the slider pushes the damper to move to generate a damping effect when the hinge is closed.

[0011] Furthermore, a first buckle ring and a second buckle ring are respectively provided at both ends of the pulling arm, the first buckle ring is buckled on the driving arm, and the second buckle ring is buckled on the sliding block.

[0012] Furthermore, the first buckle ring and the second buckle ring are arranged perpendicular to the pull arm, and the three are formed by bending metal wire in one piece.

[0013] Furthermore: the slide is extended in an arc shape, and correspondingly, the slider is arranged in an arc shape matching the shape of the slide, the pull arm is hooked on one end surface of the slider, and the other end surface of the slider is connected to the damper.

[0014] Furthermore: a damping cavity is arranged in the guide shell, and the damper is installed in the damping cavity.

[0015] Furthermore: a guide cavity is provided in the guide shell, and the pulling arm is slidably installed in the guide cavity.

[0016] Furthermore: the damper is of self-resetting compression damping type.

[0017] Furthermore, the guide shell includes a first shell and a second shell installed relatively to each other, and the slideway and the guide cavity are concavely arranged on the opposite surfaces of the first shell and the second shell.

[0018] The beneficial effects of the present invention are: 1. Simple structure, low production cost and improved market competitiveness.

[0019] 2. The present invention forms a more stable buffer structure by arranging a guide shell and a slideway in the hinge arm, and installing a slider in the slideway, and the slider contacts the damper. When the hinge is closed, the slider is connected to the driving arm through the pull arm, driving the damper to move, which can effectively provide a stable buffering effect, avoiding the shaking and instability caused by poor clearance fit in the prior art, and the buffering effect is more accurate and stable.

[0020] 3. By adopting the matching structure of the slideway and the slider, especially in the design where the slider and the slideway are closely fitted, the present invention avoids the wear problem caused by the excessive gap between the traditional hinge hole and the hinge shaft. The arc-shaped design of the slider and the slideway further increases the contact area, reduces stress concentration, effectively reduces local wear, significantly improves the durability of the hinge, and extends its service life.

[0021] 4. The guide housing of the present invention is provided with a guide cavity, and the arm is slidably installed in the guide cavity, ensuring the stability and reliability of the arm movement. This structural design avoids the problem of structural loosening caused by the expansion of the gap in the prior art, ensures the structural stability of the hinge in long-term use, and reduces the risk of loosening and failure.

[0022] 5. The design of the slider, pull arm, guide shell and other components of the present invention has a relatively simple geometric structure, and the connection and installation methods between the components are relatively simple, avoiding the complicated hinge hole and hinge shaft matching structure in the prior art. Therefore, the manufacture and assembly of the hinge are easier, reducing production costs and complexity, while improving product consistency and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0027] Figure 5 It is a structural exploded view of the present invention.

[0028] Figure 6 It is a schematic diagram of the structure after the hinge arm is hidden in the present invention. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings. A hinge with a buffer function 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, and the upper connecting rod 3 and the lower connecting rod 4 move relative to the hinge cup 1 and the hinge arm 2 to realize the opening and closing of the hinge: The hinge arm 2 is provided with a receiving chamber 21, a guide shell 5 is installed in the receiving chamber 21, a slideway 51 is provided in the guide shell 5, and a slider 7 is slidably installed in the slideway 51; It also includes a driving arm 41 disposed at the tail of the lower connecting rod 4, the driving arm 41 is connected to the slider 7 through the pulling arm 8, and pulls the slider to move; The damper 6 is also provided in the accommodating chamber 21, and the cylinder part 61 or the piston rod part 62 of the damper 6 extends into the slideway 51 and contacts the slider 7; When the hinge is closed, the driving arm 41 pulls the slider 7 to move through the pulling arm 8, and the slider 7 is used to push the damper to move to generate a damping effect when the hinge is closed.

[0030] In one embodiment, a first buckle ring 81 and a second buckle ring 82 are respectively provided at both ends of the pulling arm 8 . The first buckle ring 81 is buckled on the driving arm 41 , and the second buckle ring 82 is buckled on the slider 7 .

[0031] In one embodiment, the first buckle ring 81 and the second buckle ring 82 are disposed perpendicular to the pull arm 8 , and the three are formed by bending metal wire in one piece.

[0032] In one embodiment, the slide 51 is extended in an arc shape, and correspondingly, the slider 7 is arranged in an arc shape matching the shape of the slide 51, the pull arm 8 is hooked on one end surface of the slider 7, and the other end surface of the slider 7 is connected to the damper.

[0033] In one embodiment, a damping chamber 52 is provided in the guide shell 5 , and the damper 6 is installed in the damping chamber 52 .

[0034] In one embodiment, a guide cavity 53 is provided in the guide shell 5 , and the pulling arm 8 is slidably installed in the guide cavity 53 .

[0035] In one embodiment, the damper 6 is of a self-resetting compression damping type.

[0036] In one embodiment, the guide shell 5 includes a first shell 54 and a second shell 55 which are installed opposite to each other, and the slideway 51 and the guide cavity 53 are concavely arranged on the opposite surfaces of the first shell 54 and the second shell 55 .

[0037] Working principle: When the hinge is closed, the tail of the lower link 4 is provided with a driving arm 41, and the driving arm 41 is connected to the slider 7 through the pull arm 8. When the hinge is closed, the driving arm 41 pulls the slider 7 along the slideway 51 in the guide housing 5 through the pull arm 8, and the slider 7 pushes the damper 6 to produce a damping effect to prevent the hinge from closing quickly.

[0038] The cylinder part 61 or the piston rod part 62 of the damper 6 extends into the slideway 51 and contacts the slider 7. When the slider pushes the damper, the damper effectively controls the closing speed of the hinge through the internal hydraulic mechanism, thereby achieving a smooth buffering effect. This design avoids the impact caused by the rapid closing of the cabinet door, protects the cabinet body and the door panel, and also reduces the potential danger to the user.

[0039] After the hinge is opened, the compression structure in the damper 6 enables it to automatically reset and push the slider and the arm in the opposite direction to reset, which ensures that the hinge can be restored to its initial state every time it is closed. This design not only maintains the consistency of the buffering effect, but also avoids the problem of buffering failure caused by the inability of the damper to reset. The addition of the self-reset function greatly improves the durability and convenience of the hinge.

[0040] The slider 7 slides in the slideway 51 in the guide housing 5. The slideway is designed to be arc-shaped, so that the slider and the slideway can be well matched and matched, which not only ensures the smoothness of the slider movement, but also increases the contact area between the slider and the slideway, avoiding the gap problem caused by the matching of the hinge shaft and the hinge hole in the traditional hinge. In the present invention, the arc-shaped design and precise matching of the slider greatly reduce the shaking and extend the service life of the hinge.

[0041] Furthermore, one end of the pulling arm 8 is connected to the driving arm 41 through a first buckle 81, and the other end is connected to the slider 7 through a second buckle 82. The setting of the pulling arm not only enables the driving arm to effectively pull the slider, but also increases the contact area between the pulling arm, the driving arm and the slider through its specific structural design, thereby reducing local pressure, reducing the movement wear of the moving parts, and extending their service life.

[0042] Compared with traditional technologies, in this case, through the direct cooperation between the damper and the slider, the hinge can provide a stable and controllable buffering effect when closing, avoiding the impact of traditional hinges when closing. In particular, during the closing process of the cabinet door, the hydraulic or pneumatic damping can be gradually released by pushing the damper through the slider, so that the door panel can be closed slowly and smoothly, avoiding the noise and impact caused by rapid closing. At the same time, the arc-shaped matching design between the slider and the slide can significantly reduce the gap problem caused by manufacturing errors or long-term use. Compared with the traditional hinge hole and hinge shaft structure, the present invention increases the contact area through the cooperation of the slide and the slider, avoids excessive concentration of local stress, reduces wear, and also plays a role in extending the service life of the product.

[0043] In addition, due to the precise matching design of the slider, guide shell and damper adopted in the present invention, the buffer stroke and angle can be controlled more accurately. This enables the hinge to achieve not only large-angle buffering but also good buffering effect at small angles during actual use, and is suitable for application scenarios that require precise control of the opening and closing angles, such as high-end furniture cabinet doors or electronic equipment cabinets.

[0044] 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 hinge with a buffer function, 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) move relative to the hinge cup (1) and the hinge arm (2) to realize the opening and closing of the hinge: Features: The hinge arm (2) is provided with a receiving chamber (21), a guide shell (5) is installed in the receiving chamber (21), a slideway (51) is provided in the guide shell (5), and a slider (7) is slidably installed in the slideway (51); It also includes a driving arm (41) arranged at the tail of the lower connecting rod (4), the driving arm (41) being connected to the sliding block (7) via the pulling arm (8) and pulling the sliding block (7) to move; It also includes a damper (6) disposed in the accommodating chamber (21), wherein a cylinder portion (61) or a piston rod portion (62) of the damper (6) extends into the slideway (51) and contacts the slider (7); When the hinge is closed, the driving arm (41) pulls the slider (7) to move via the pulling arm (8), and the slider (7) pushes the damper to move, thereby generating a damping effect when the hinge is closed.

2. A hinge with a buffering function according to claim 1, characterized in that: The two ends of the pulling arm (8) are respectively provided with a first buckle ring (81) and a second buckle ring (82); the first buckle ring (81) is buckled on the driving arm (41), and the second buckle ring (82) is buckled on the slider (7).

3. A hinge with a buffering function according to claim 2, characterized in that: The first buckle ring (81) and the second buckle ring (82) are arranged perpendicular to the pull arm (8), and the three are formed by bending metal wire in one piece.

4. The hinge with buffer function according to claim 1, characterized in that: The slideway (51) is extended in an arc shape. Correspondingly, the slider (7) is arranged in an arc shape matching the shape of the slideway (51). The pull arm (8) is hooked on one end surface of the slider (7), and the other end surface of the slider (7) is connected to the damper.

5. The hinge with buffer function according to claim 1, characterized in that: A damping chamber (52) is provided in the guide shell (5), and the damper (6) is installed in the damping chamber (52).

6. The hinge with buffer function according to claim 1, characterized in that: A guide cavity (53) is provided in the guide shell (5), and the pulling arm (8) is slidably mounted in the guide cavity (53).

7. A hinge with a buffering function according to any one of claims 1, 4 or 5, characterized in that: The damper (6) is of a self-resetting compression damping type.

8. The hinge with buffer function according to claim 6, characterized in that: The guide shell (5) comprises a first shell (54) and a second shell (55) which are relatively mounted, and the slideway (51) and the guide cavity (53) are concavely arranged on the opposite surfaces of the first shell (54) and the second shell (55).

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