Hardware door hinge driven and buffered by connecting rod

Abstract

A hardware door hinge driven and buffered by connecting rods 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, one outer side face of the hinge cup is provided with a mounting base and a sliding block embedded in the mounting base, a buffer is fixed in the mounting base, the other end of the buffer is connected with the sliding block, and the buffer is used for controlling the movement speed of the sliding block; a driving seat is arranged on the inner side face of the hinge cup, one side of the driving seat extends outwards to form an insertion plate, correspondingly, a guide groove is formed in the inner side wall of the hinge cup, and the insertion plate penetrates through the guide groove to be connected with the sliding block; the upper connecting rod and the lower connecting rod are hinged to the hinge cup through an upper hinge shaft and a lower hinge shaft, the outer side face of the upper connecting rod protrudes to form a driving table, the driving table is arranged far away from the upper hinge shaft, the tail of the driving base extends backwards to form a supporting foot, and the supporting foot extends into the moving track of the driving table. The driving table is pressed on the end faces of the supporting legs to drive the driving base and the sliding block to move, and a damping effect is generated when the door is closed.

Description

Technical Field

[0001] The invention relates to a door hinge, in particular to a hardware door hinge driven and buffered by a connecting rod. Background Art

[0002] In order to improve the comfort of hinges and extend their service life, buffered hardware hinges have emerged. They mainly achieve smooth buffering during the opening and closing of hinges by setting a damping device to prevent the impact and noise caused by rapid closing. In the prior art, buffered hardware hinges usually set the damping device inside the hinge cup or the hinge arm. The internal space of the hinge cup and the hinge arm is limited, and the installation position of the damping device is greatly restricted. In traditional technology, in order to cope with the narrow installation space, the buffer needs to be designed to be relatively small, so its volume is usually small, which directly leads to a narrow range of impact forces that the buffer can withstand. The smaller buffer cannot provide sufficient buffering effect, so the buffer is subjected to greater stress. The buffer is prone to wear during long-term operation, which accelerates the performance decay of the buffer and shortens its service life, eventually causing the buffer to be damaged or unable to achieve the expected buffering effect. The unsatisfactory buffering effect also increases the risk of noise generation, and cannot meet the demand for silent performance. At the same time, the buffer and other components need to be assembled in a very compact structure, which is difficult to install and has high installation costs, which is not conducive to the widespread use of hinges. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a hardware door hinge driven by a connecting rod for buffering, which has a simple structure, low production cost, ideal buffering effect, convenient disassembly and assembly, improved impact resistance and pressure resistance, and is suitable for use with door hinges of various types and specifications.

[0004] The object of the present invention is achieved in the following manner: a hardware door hinge with buffer driven by a connecting rod, comprising 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, the upper connecting rod and the lower connecting rod swing relative to the hinge cup or the hinge arm to realize the opening and closing of the door hinge, an outer side surface of the hinge cup is provided with a mounting seat and a slider embedded therein, the buffer is fixed in the mounting seat, the other end of the buffer is connected to the slider, and the buffer is used to control the movement speed of the slider; The inner side of the hinge cup is provided with a driving seat, one side of the driving seat extends outward to form an insert plate, and correspondingly, a guide groove is opened on the inner side wall of the hinge cup, and the insert plate passes through the guide groove and is connected to the slider; The upper connecting rod and the lower connecting rod are hinged to the hinge cup through the upper hinge shaft and the lower hinge shaft. The outer side surface of the upper connecting rod protrudes to form a driving platform, and the driving platform is arranged away from the upper hinge shaft. The tail of the driving seat extends backward with a supporting foot, and the supporting foot extends into the movable track of the driving platform. When the hinge is closed, the driving platform presses on the end surface of the supporting foot, driving the driving seat and the slider to move, thereby pushing the buffer to move, generating a damping effect when closing the door.

[0005] Furthermore: the driving platform is a boss formed by punching outwards from the upper connecting rod body material.

[0006] Furthermore, a guide truncated platform is formed on the side wall of the driving platform around the center of the upper hinge shaft, and the driving platform is located on the outer circle of the guide truncated platform.

[0007] Furthermore, a limiting foot is extended backward from the tail of the driving seat, and the limiting foot and the supporting foot are arranged at intervals up and down to form a guide area between the limiting foot and the supporting foot, and the guide area is clamped outside the guide truncated table.

[0008] Furthermore: the buffer is a compression damping type hydraulic damper, the cylinder part of the buffer is fixed in the mounting seat, and the piston rod of the buffer is connected to the slider.

[0009] Furthermore: a clamping platform is arranged on the piston rod, a clamping slot is arranged on the slider, the end of the clamping slot is open, the clamping platform passes through the open end of the clamping slot and is clamped in the clamping slot.

[0010] Furthermore: the clamping groove is arranged in a T-shape, and the width of the upper section is smaller than the width of the lower section, and is also smaller than the diameter of the piston rod.

[0011] Furthermore: a lower spring column is provided on the slider, and correspondingly, an upper spring column is provided on the mounting seat. One end of the spring is looped on the lower spring column and pressed against the end surface of the slider; the other end is looped on the upper spring column and pressed against the end surface of the mounting seat. The spring generates thrust to push the slider and the mounting seat to move away from each other.

[0012] The beneficial effects of the present invention are: 1. Simple structure, low production cost and improved market competitiveness.

[0013] 2. Unlike the common prior art method of installing the buffer inside the hinge cup, the present invention installs the buffer outside the hinge cup. This innovative design avoids the limitation of the narrow space inside the hinge cup. The buffer can be designed and configured more freely, and more space is obtained to optimize its structure and performance. Through this design, the working efficiency of the buffer is significantly improved, and the movement speed of the slider can be more effectively controlled, thereby providing a smoother door opening and closing operation.

[0014] 3. Since the buffer is installed externally, it is no longer limited by the internal size of the hinge cup, so the design can be adapted to various specifications and types of hardware door hinges. Whether it is a large-sized door hinge or a small door hinge, efficient buffering can be achieved, which greatly enhances the application applicability of the present invention in different scenarios.

[0015] 4. By optimizing the position and installation method of the buffer, the buffer can better absorb the impact force and reduce the mechanical vibration and impact caused by the hinge opening and closing, thereby improving the impact resistance and overall durability of the door hinge. The stability and effectiveness of the buffer are enhanced, which can effectively extend the service life of the door hinge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the open state of the door hinge in the present invention.

[0017] Figure 2 It is a schematic diagram of the closed state of the door hinge in the present invention.

[0018] Figure 3 It is a structural assembly diagram of the hinge cup and hinge arm in the present invention.

[0019] Figure 4 It is a schematic diagram of the structure after the hinge cup and hinge arm are hidden in the present invention.

[0020] Figure 5 It is a structural assembly diagram of the upper connecting rod, the driving seat and the mounting seat in the present invention.

[0021] Figure 6 It is a schematic diagram of the installation of the slider and the mounting seat in the present invention.

[0022] Figure 7 It is a schematic structural diagram of the upper connecting rod in the present invention.

[0023] Figure 8 It is a structural schematic diagram of the driving seat in the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings. A hardware door hinge driven by a connecting rod and buffered, comprising a hinge cup 1 and a hinge arm 2, the hinge cup 1 and the hinge arm 2 are hinged by an upper connecting rod 3 and a lower connecting rod 4, the upper connecting rod 3 and the lower connecting rod 4 swing relative to the hinge cup 1 or the hinge arm 2 to realize the opening and closing of the door hinge, an outer side surface of the hinge cup 1 is provided with a mounting seat 5 and a slider 6 embedded therein, a buffer 7 is fixed in the mounting seat 5, the other end of the buffer 7 is connected to the slider 6, and the buffer 7 is used to control the movement speed of the slider 6; The inner side of the hinge cup 1 is provided with a driving seat 8, one side of the driving seat 8 extends outward to form an insert plate 81, and correspondingly, a guide groove 11 is opened on the inner side wall of the hinge cup 1, and the insert plate 81 passes through the guide groove 11 and is connected to the slider 6; The upper connecting rod 3 and the lower connecting rod 4 are hinged to the hinge cup 1 through the upper hinge shaft 31 and the lower hinge shaft 41. The outer side surface of the upper connecting rod 3 is protruded to form a driving platform 32, and the driving platform 32 is arranged away from the upper hinge shaft 31. The tail of the driving seat 8 extends backward with a supporting foot 82, and the supporting foot 82 extends into the movable track of the driving platform 32. When the hinge is closed, the driving platform 32 presses on the end surface of the supporting foot 82, driving the driving seat 8 and the slider 6 to move, thereby pushing the buffer 7 to move, generating a damping effect when closing the door.

[0025] In one embodiment, the driving platform 32 is a boss formed by punching outwards from the main material of the upper connecting rod 3 .

[0026] In one embodiment, the side wall of the driving platform 32 is further formed with a guide truncated platform 33 around the center position of the upper hinge shaft, and the driving platform 32 is located on the outer circle of the guide truncated platform 33 .

[0027] In one embodiment, a limiting foot 84 is extended backward from the tail of the driving seat 8 , and the limiting foot 84 and the supporting foot 82 are arranged with an interval up and down, and a guide area 85 is formed between the limiting foot 84 and the supporting foot 82 , and the guide area 85 is clamped outside the guide cone 33 .

[0028] In one of the embodiments, the buffer 7 is a compression damping type hydraulic damper, the cylinder part of the buffer 7 is fixed in the mounting seat 5, and the piston rod 71 of the buffer 7 is connected to the slider 6.

[0029] In one embodiment, a clamping platform 72 is provided on the piston rod 71 , a clamping slot 61 is provided on the slider 6 , the end of the clamping slot 61 is open, and the clamping platform 72 passes through the open end of the clamping slot 61 and is clamped in the clamping slot 61 .

[0030] In one embodiment, the slot 61 is T-shaped, and the width of the upper section is smaller than the width of the lower section, and is smaller than the diameter of the piston rod 71 .

[0031] In one of the embodiments: the slider 6 is provided with a lower spring column 62, and correspondingly, the mounting seat 5 is provided with an upper spring column 51, one end of the spring 9 is looped on the lower spring column 62 and pressed against the end surface of the slider 6; the other end is looped on the upper spring column 51 and pressed against the end surface of the mounting seat 5, the spring 9 generates a thrust to push the slider 6 and the mounting seat 5 to move away from each other.

[0032] Working principle: When the door hinge is opened or closed, the upper connecting rod 3 and the lower connecting rod 4 are connected to the hinge cup 1 and the hinge arm 2 through the upper hinge shaft 31 and the lower hinge shaft 41 respectively. The movement of the upper connecting rod and the lower connecting rod swings relative to the hinge cup and the hinge arm, pushing the door hinge to open or close the door.

[0033] The buffer 7 is fixed by a mounting seat 5 mounted on the outside of the hinge cup 1. A slider 6 is embedded in the mounting seat, and the other end of the buffer is connected to the slider. The movement of the slider 6 is controlled by the buffer, and its movement speed is restricted by the buffer during the closing process of the door hinge, thereby avoiding the impact force generated when the door body is closed too quickly.

[0034] When the door hinge approaches the closed position, the damping effect of the buffer gradually takes effect, slowly and smoothly controlling the movement of the slider 6, reducing impact and noise, and ensuring that the door body closes smoothly.

[0035] The driving seat 8 is located on the inner side of the hinge cup 1, and one side thereof extends outward to form an insert plate 81. The insert plate 81 passes through the guide groove 11 on the inner wall of the hinge cup and is connected to the slider 6. The tail of the driving seat is provided with a support foot 82, which cooperates with the driving platform 32 to ensure that when the hinge is closed, the driving platform is pressed on the end surface of the support foot.

[0036] When the door hinge is closed, the driving platform 32 applies pressure through the end surface of the supporting foot 82 to push the driving seat 8 and the slider 6 forward, thereby pushing the buffer 7 to move. The buffer provides a damping effect when closing the door by controlling the movement speed of the slider, thereby preventing the door hinge from being damaged due to too fast closing.

[0037] The buffer 7 is a compression damping type hydraulic damper, the cylinder part is fixed in the mounting seat 5, and the piston rod 71 is connected to the slider 6. When the slider 6 moves, the piston rod 71 produces a buffering effect under the damping effect of the liquid in the buffer. The design of the buffer effectively controls the movement speed of the slider, slows down the speed of the door hinge when closing, plays a role in reducing impact and friction, and thus effectively prolongs the service life of the door hinge.

[0038] Specifically: When the door hinge is closed to the designed angle, the driving platform 32 presses on the end surface of the supporting foot 82, pushing the driving seat 8 and the slider 6 to move along the guide groove 11, thereby driving the buffer 7 to move. The buffer 7 controls the movement speed of the slider through hydraulic damping to close the door smoothly. At the same time, the design of the clamping platform and the clamping slot ensures the stability of the connection between the components. The action of the spring further improves the smoothness of the movement of the slider. This structure not only improves the buffering effect through the external installation of the buffer, but also ensures the service life and impact resistance of the door hinge, so that the door hinge of the present invention is suitable for the installation of hinges of various specifications, and has stronger durability and adaptability.

[0039] In order to ensure that the track of the driving seat is more stable when sliding, the tail of the driving seat 8 in this case also extends backward with a limit foot 84, and the limit foot 84 and the support foot 82 are arranged at intervals, and a guide area 85 is formed between the limit foot 84 and the support foot 82, and the guide area 85 is clamped outside the guide truncated platform 33. The cooperation between the guide truncated platform and the guide area limits the motion track of the driving seat, so that the driving seat can work stably and efficiently for a long time, 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 hardware door hinge driven by a connecting rod for buffering, 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) swing relative to the hinge cup (1) or the hinge arm (2) to realize the opening and closing of the door hinge, characterized in that: An outer side surface of the hinge cup (1) is provided with a mounting seat (5) and a slider (6) embedded therein, a buffer (7) is fixed in the mounting seat (5), the other end of the buffer (7) is connected to the slider (6), and the buffer (7) is used to control the movement speed of the slider (6); The inner side surface of the hinge cup (1) is provided with a driving seat (8), one side of the driving seat (8) extends outward to form an insert plate (81), and correspondingly, a guide groove (11) is provided on the inner side wall of the hinge cup (1), and the insert plate (81) passes through the guide groove (11) and is connected to the slider (6); The upper connecting rod (3) and the lower connecting rod (4) are hinged to the hinge cup (1) via an upper hinge shaft (31) and a lower hinge shaft (41); a driving platform (32) is formed on the outer side surface of the upper connecting rod (3); the driving platform (32) is arranged away from the upper hinge shaft (31); a supporting foot (82) extends backward from the tail of the driving seat (8); the supporting foot (82) extends into the moving track of the driving platform (32); when the hinge is closed, the driving platform (32) presses on the end surface of the supporting foot (82), driving the driving seat (8) and the slider (6) to move, thereby pushing the buffer (7) to move, thereby generating a damping effect when closing the door.

2. A hardware door hinge driven and buffered by a connecting rod according to claim 1, characterized in that: The driving platform (32) is a boss formed by punching outwards from the main body material of the upper connecting rod (3).

3. The hardware door hinge driven and buffered by a connecting rod according to claim 1, characterized in that: The side wall of the driving platform (32) is also formed with a guide circumferential platform (33) around the center position of the upper hinge shaft, and the driving platform (32) is located on the outer circle of the guide circumferential platform (33).

4. A hardware door hinge driven and buffered by a connecting rod according to claim 3, characterized in that: A limiting foot (84) is further extended backward from the tail of the driving seat (8), the limiting foot (84) and the supporting foot (82) are arranged vertically and spaced apart, and a guide area (85) is formed between the limiting foot (84) and the supporting foot (82), and the guide area (85) is clamped outside the guide truncated table (33).

5. The hardware door hinge driven and buffered by a connecting rod according to claim 1, characterized in that: The buffer (7) is a compression damping type hydraulic damper. The cylinder part of the buffer (7) is fixed in the mounting seat (5), and the piston rod (71) of the buffer (7) is connected to the slider (6).

6. A hardware door hinge driven and buffered by a connecting rod according to claim 5, characterized in that: The piston rod (71) is provided with a clamping platform (72), the slider (6) is provided with a clamping slot (61), the end of the clamping slot (61) is open, and the clamping platform (72) passes through the open end of the clamping slot (61) and is clamped in the clamping slot (61).

7. The hardware door hinge driven and buffered by a connecting rod according to claim 6, characterized in that: The clamping groove (61) is arranged in a T-shape, and the width of the cross section at the upper end is smaller than the width of the cross section at the lower end, and is also smaller than the diameter of the piston rod (71).

8. The hardware door hinge driven and buffered by a connecting rod according to claim 1, characterized in that: The slider (6) is provided with a lower spring column (62), and correspondingly, the mounting seat (5) is provided with an upper spring column (51). One end of the spring (9) is looped on the lower spring column (62) and pressed against the end surface of the slider (6); the other end is looped on the upper spring column (51) and pressed against the end surface of the mounting seat (5). The spring (9) generates a thrust to push the slider (6) and the mounting seat (5) to move away from each other.

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