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 utility model relates to the technical field of hardware hinges, in particular to a hinge with a buffer function. Background Art

[0002] Hardware hinges, as crucial components connecting cabinet doors and cabinet bodies, are widely used in furniture, doors, windows, and other applications. In daily use, hinges frequently open and close, requiring a certain degree of cushioning to prevent impact on connected components or users when the cabinet door rapidly closes. To this end, hydraulic hinges with cushioning functions are becoming increasingly popular in the market. Hydraulic cushioning hinges offer smooth, controlled opening and closing, making them highly sought after in the furniture industry.

[0003] In the prior art, hydraulic buffer hinges typically utilize a design in which a damper is connected to a lower link via a pull rod. This design is clearly disclosed in Chinese Patent Nos. 2015207027842, 2011201225080, and 2016211894445. In this typical design, the pull rods are provided with hinge holes at both ends. One end is connected to the damper through the hinge hole, and the other end is connected to the hinge shaft on the lower link through the hinge hole. While this structure achieves a buffering effect, it still suffers from numerous drawbacks in practical applications, seriously affecting the performance and durability of the hydraulic buffer hinge.

[0004] The main shortcomings of existing hydraulic buffer hinges are manifested in the following aspects: 1. The through-hole hinge hole and the hinge shaft in 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 getting stuck 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 shortcoming of the existing technology.

[0005] 2. The contact area between the hinge hole and the hinge shaft in existing designs is small, and the contact force is primarily concentrated on a small area around the hinge shaft. This design results in concentrated contact stress and increased wear during the hinge's opening and closing process. Wear on the contact area shortens the hinge's service life, leading to frequent repairs and replacements and increased maintenance costs for users.

[0006] 3. After long-term use, the contact surface between the hinge hole and the hinge shaft gradually wears, and the gap widens. This wear effect causes the hinge to wobble more during closing, reducing stability. As wear progresses, the hinge's cushioning effect significantly decreases, especially during slow closing at small angles, making it difficult to maintain a stable cushioning, affecting the user experience. Furthermore, the widening gap reduces the stability of the overall structure, making it more susceptible to loosening or even failure, further affecting product reliability.

[0007] 4. Due to gap fit issues, small contact area, and gap expansion due to wear, existing hinges have significant deficiencies in achieving a cushioning function, particularly when it comes to precisely controlling the opening and closing angles. In applications requiring a slow-close function, excessive gaps and the resulting wobbling not only affect the aesthetics but also negatively impact the door's sealing and service life. Furthermore, achieving precise slow-close is difficult.

[0008] In summary, existing hydraulic buffer hinges have numerous structural design issues, particularly regarding manufacturing precision, wear resistance, and service life. To address these issues, providing an improved hinge structure design, specifically one that improves hinge fit precision, increases contact area, reduces wear, and enhances buffering effectiveness, is a key issue that urgently needs to be addressed in the current technical field. Utility Model Content

[0009] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a hinge with a buffer function that has a simple structure, is easy to use, and can achieve a more stable and reliable hinge action and a long service life.

[0010] The purpose of the utility model is achieved in the following way: 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:

[0011] The hinge arm is provided with an accommodating cavity, a guide shell is installed in the accommodating cavity, a slide is provided in the guide shell, and a slider is slidably installed in the slide;

[0012] It also includes a driving arm arranged at the tail end of the lower connecting rod, the driving arm is connected to the slider through the pulling arm and pulls the slider to move;

[0013] 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;

[0014] 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 produce a damping effect when the hinge is closed.

[0015] 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 slider.

[0016] 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.

[0017] Furthermore: the slide is extended in an arc shape, and correspondingly, the slider is set in an arc shape that matches the shape of the slide, the pull arm is hooked on one end face of the slider, and the other end face of the slider is connected to the damper.

[0018] Furthermore: a damping cavity is provided in the guide shell, and the damper is installed in the damping cavity.

[0019] Furthermore: a guide cavity is provided in the guide shell, and the pulling arm is slidably installed in the guide cavity.

[0020] Furthermore: the damper is of self-resetting compression damping type.

[0021] Furthermore, the guide shell includes a first shell and a second shell that are relatively installed, and the slideway and the guide cavity are concavely arranged on the opposite surfaces of the first shell and the second shell.

[0022] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0023] 2. This invention incorporates a guide housing and slideway within the hinge arm, and a slider mounted within the slideway, which contacts the damper, creating a more stable cushioning structure. When the hinge is closed, the slider connects to the drive arm via the pull arm, driving the damper to move. This effectively provides a smooth cushioning effect, avoiding the shaking and instability caused by poor clearance fit in the prior art, resulting in a more precise and stable cushioning effect.

[0024] 3. By adopting a coordinated structure of slideways and sliders, particularly the design of a close fit between the slider and the slideway, this utility model 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, and effectively reduces local wear, significantly improving the durability of the hinge and extending its service life.

[0025] 4. The guide housing of this utility model is provided with a guide cavity, into which the arm slides, ensuring smooth and reliable movement of the arm. This structural design avoids the loosening problem caused by gap expansion in the prior art, ensuring the structural stability of the hinge during long-term use and reducing the risk of loosening and failure.

[0026] 5. The slider, arm, guide housing, and other components of the present invention feature a relatively simple geometric design. The connection and assembly of these components are also relatively straightforward, avoiding the complex hinge hole and hinge axis coupling mechanisms found in existing designs. This simplifies hinge manufacture and assembly, reducing production costs and complexity while improving product consistency and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a diagram showing the hinge of the present invention in an open state.

[0028] Figure 2 This is a cross-sectional view of the structure of the hinge in the open state in the present invention.

[0029] Figure 3 This is a diagram showing the hinge in the closed state in the present invention.

[0030] Figure 4 This is a cross-sectional view of the structure of the hinge in the closed state in the present invention.

[0031] Figure 5 This is a structural exploded view of the utility model.

[0032] Figure 6 This is a schematic diagram of the structure after the hinge arm is hidden in the present invention. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings. A hinge with a buffering function comprises a hinge cup 1 and a hinge arm 2. The hinge cup 1 and the hinge arm 2 are hingedly connected via an upper connecting rod 3 and a lower connecting rod 4. The upper connecting rod 3 and the lower connecting rod 4 move relative to the hinge cup 1 and the hinge arm 2 to achieve the opening and closing of the hinge:

[0034] The hinge arm 2 is provided with a receiving cavity 21, a guide housing 5 is installed in the receiving cavity 21, a slideway 51 is provided in the guide housing 5, and a slider 7 is slidably installed in the slideway 51;

[0035] It also includes a driving arm 41 provided at the tail end 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;

[0036] The damper 6 is also provided in the accommodating chamber 21 , wherein the cylinder portion 61 or the piston rod portion 62 of the damper 6 extends into the slideway 51 and contacts the slider 7 ;

[0037] When the hinge is closed, the driving arm 41 pulls the slider 7 to move through the pulling arm 8, and the slider 7 pushes the damper to move to generate a damping effect when the hinge is closed.

[0038] In one embodiment, a first buckle 81 and a second buckle 82 are respectively provided at both ends of the pulling arm 8 . The first buckle 81 is buckled on the driving arm 41 , and the second buckle 82 is buckled on the slider 7 .

[0039] In one embodiment, the first buckle 81 and the second buckle 82 are arranged perpendicular to the pull arm 8 , and are formed by integrally bending a metal wire.

[0040] In one embodiment, the slide 51 is extended in an arc shape, and correspondingly, the slider 7 is set to be an arc shape matching the shape of the slide 51. The pull arm 8 is hooked on one end face of the slider 7, and the other end face of the slider 7 is connected to the damper.

[0041] In one embodiment, a damping chamber 52 is provided in the guide housing 5 , and the damper 6 is installed in the damping chamber 52 .

[0042] In one embodiment, a guide cavity 53 is provided in the guide housing 5 , and the pulling arm 8 is slidably installed in the guide cavity 53 .

[0043] In one embodiment, the damper 6 is of a self-resetting compression damping type.

[0044] In one embodiment, the guide housing 5 includes a first shell 54 and a second shell 55 that are installed opposite to each other, and the slideway 51 and the guide cavity 53 are concavely disposed on opposite surfaces of the first shell 54 and the second shell 55 .

[0045] Working Principle: When the hinge is closed, a driving arm 41 is provided at the tail end of the lower link 4, which is connected to the slider 7 via 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 via the pull arm 8. The slider 7 pushes the damper 6, generating a damping effect and preventing the hinge from closing quickly.

[0046] The cylinder portion 61 or piston rod portion 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 its internal hydraulic mechanism, achieving a smooth and cushioning effect. This design avoids the impact of rapid door closing, protecting the cabinet body and door panel, and reducing potential dangers to users.

[0047] After the hinge opens, the compression structure in damper 6 automatically resets itself, pushing the slider and arm in the opposite direction. This ensures that the hinge returns to its initial state each time it closes. This design not only maintains consistent cushioning but also avoids cushioning failure caused by the damper failing to reset. The addition of this self-reset feature significantly improves the hinge's durability and ease of use.

[0048] The slider 7 slides within the guide housing 5 in a slideway 51. The slideway's arc-shaped design allows for a perfect match and coordination between the slider and the slideway. This not only ensures smooth movement but also increases the contact area between the slider and the slideway, eliminating the gap problem that occurs between the hinge shaft and the hinge hole in traditional hinges. In this utility model, the slider's arc-shaped design and precise matching significantly reduce wobble and extend the hinge's service life.

[0049] Furthermore, one end of the pulling arm 8 is connected to the driving arm 41 via a first buckle 81, and the other end is connected to the slider 7 via a second buckle 82. The provision of the pulling arm not only enables the driving arm to effectively pull the slider, but also, through its specific structural design, increases the contact area between the pulling arm, the driving arm, and the slider, thereby reducing local pressure, reducing wear on the moving parts, and extending their service life.

[0050] Compared with traditional technologies, in this case, the hinge can provide a stable and controllable buffering effect when closing through the direct cooperation between the damper and the slider, avoiding the impact of traditional hinges when closing. Especially in the process of closing 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 utility model 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.

[0051] Furthermore, thanks to the precise matching of the slider, guide housing, and damper in this invention, the cushioning stroke and angle can be more precisely controlled. This allows the hinge to achieve not only wide-angle cushioning but also good cushioning at shallow angles during actual use, making it suitable for applications requiring precise control of opening and closing angles, such as high-end furniture cabinet doors or electronic equipment cabinets.

[0052] 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. A hinge with a buffering 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: Its characteristics are: The hinge arm (2) is provided with a receiving cavity (21), a guide shell (5) is installed in the receiving cavity (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 end 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; 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. The hinge with a buffer function according to claim 1, characterized in that: The pulling arm (8) is provided with a first buckle (81) and a second buckle (82) at both ends, respectively. The first buckle (81) is buckled on the driving arm (41), and the second buckle (82) is buckled on the slider (7).

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

4. The hinge with a 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 that matches the shape of the slideway (51). The pull arm (8) is hooked on one end face of the slider (7), and the other end face of the slider (7) is connected to the damper.

5. The hinge with a 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 a 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 a 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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