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] This utility model relates to a door hinge, specifically a metal door hinge driven and buffered by a linkage. Background Technology

[0002] To improve the comfort and extend the lifespan of hinges, damping hinges have emerged. They primarily utilize damping devices to smoothly buffer the hinge's opening and closing process, preventing impacts and noise caused by rapid closing. In existing technologies, damping hinges typically place the damping device inside the hinge cup or hinge arm. However, the limited internal space of the hinge cup and arm significantly restricts the installation location of the damping device. Traditionally, to cope with this confined installation space, the damper needs to be designed to be quite small, resulting in a narrow impact force range that the damper can withstand. Smaller dampers cannot provide sufficient cushioning, leading to greater stress on the damper. Over time, the damper is prone to wear, accelerating performance degradation, shortening its lifespan, and ultimately causing damage or failure to achieve the desired cushioning effect. Furthermore, the inadequate cushioning increases the risk of noise generation, failing to meet the demand for quiet operation. Simultaneously, the damper requires a very compact assembly with other components, making installation difficult and costly, hindering its widespread use. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a metal door hinge with a linkage-driven buffer that is simple in structure, low in manufacturing cost, has an ideal buffering effect, is easy to assemble and disassemble, improves impact resistance and pressure resistance, and is compatible with various types and specifications of door hinges.

[0004] The purpose of this utility model is achieved in the following way: a metal door hinge driven by a connecting rod and a buffer, which includes a hinge cup and a hinge arm. The hinge cup and the hinge arm are hinged together 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. A mounting base is provided on one outer side of the hinge cup and a slider is embedded therein. The buffer is fixed in the mounting base and the other end of the buffer is connected to the slider. The buffer is used to control the movement speed of the slider.

[0005] The inner side of the hinge cup is provided with a drive seat, and one side of the drive seat extends outward to form an insert plate. Correspondingly, a guide groove is provided on the inner side wall of the hinge cup, and the insert plate passes through the guide groove to connect with the slider.

[0006] The upper and lower connecting rods are hinged to the hinge cup via the upper and lower hinge shafts. The outer side of the upper connecting rod protrudes to form a drive platform, which is located away from the upper hinge shaft. The tail of the drive seat extends rearward with a support foot, which extends into the movement trajectory of the drive platform. When the hinge is closed, the drive platform presses against the end face of the support foot, driving the drive seat and the slider to move, thereby pushing the buffer to move and generating a damping effect when the door is closed.

[0007] Furthermore, the drive platform is a boss formed by stamping the upper connecting rod body material outward.

[0008] Furthermore, the sidewall of the drive platform is also formed with a guide frustum around the center position of the upper hinge shaft, and the drive platform is located on the outer circle of the guide frustum.

[0009] Furthermore, the tail of the drive seat extends rearward with a limiting foot, which is spaced vertically from the support foot, forming a guide area between the limiting foot and the support foot. The guide area is clamped outside the guide frustum.

[0010] Furthermore: the buffer is a compression damping type hydraulic damper, the cylinder part of the buffer is fixed in the mounting base, and the piston rod of the buffer is connected to the slider.

[0011] Furthermore: the piston rod is provided with a locking platform, and the slider is provided with a locking groove. The port of the locking groove is open, and the locking platform passes through the open end of the locking groove and is locked in the locking groove.

[0012] Furthermore, the slot is T-shaped, with its upper cross-sectional width being smaller than its lower cross-sectional width and smaller than the piston rod diameter.

[0013] Furthermore: The slider is provided with a lower spring post, and correspondingly, the mounting base is provided with an upper spring post. One end of the spring is looped around the lower spring post and presses against the end face of the slider; the other end is looped around the upper spring post and presses against the end face of the mounting base. The spring generates a thrust, pushing the slider to move away from the mounting base.

[0014] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0015] 2. Unlike existing technologies that commonly install the buffer inside the hinge cup, this invention installs the buffer on the outside of the hinge cup. This innovative design avoids the limitations of the confined space inside the hinge cup. The buffer can be designed and configured more freely, gaining more space to optimize its structure and performance. Through this design, the buffer's working efficiency is significantly improved, enabling more effective control of the slider's movement speed, thereby providing a smoother door opening and closing operation.

[0016] 3. Because the buffer is externally mounted, it is no longer limited by the internal dimensions of the hinge cup, allowing this design to adapt to various specifications and types of door hinges. Whether it's a large or small door hinge, it can achieve efficient buffering, greatly enhancing the applicability of this invention in different scenarios.

[0017] 4. By optimizing the position and installation method of the damper, it can better absorb impact force, reducing mechanical vibration and impact generated when the hinge opens and closes, thereby improving the impact resistance and overall durability of the door hinge. The stability and effectiveness of the damper are enhanced, which can effectively extend the service life of the door hinge. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the open state of the door hinge in this utility model.

[0019] Figure 2 This is a schematic diagram of the closed state of the door hinge in this utility model.

[0020] Figure 3 This is a structural assembly drawing of the hinge cup and hinge arm in this utility model.

[0021] Figure 4 This is a schematic diagram of the rear structure of the concealed hinge cup and hinge arm in this utility model.

[0022] Figure 5 This is a structural assembly drawing of the upper connecting rod, drive seat, and mounting seat in this utility model.

[0023] Figure 6 This is a schematic diagram of the installation of the slider and mounting base in this utility model.

[0024] Figure 7 This is a schematic diagram of the upper connecting rod in this utility model.

[0025] Figure 8 This is a schematic diagram of the drive seat in this utility model. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings. A metal door hinge driven by a linkage and buffer includes a hinge cup 1 and a hinge arm 2. The hinge cup 1 and the hinge arm 2 are hinged together by an upper linkage 3 and a lower linkage 4. The upper linkage 3 and the lower linkage 4 swing relative to the hinge cup 1 or the hinge arm 2 to realize the opening and closing of the door hinge. A mounting base 5 is provided on one outer side of the hinge cup 1, and a slider 6 is embedded therein. A buffer 7 is fixed in the mounting base 5, and the other end of the buffer 7 is connected to the slider 6. The buffer 7 is used to control the movement speed of the slider 6.

[0027] The inner side of the hinge cup 1 is provided with a drive seat 8, and one side of the drive seat 8 extends outward to form an insert plate 81. 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 connects with the slider 6.

[0028] The upper connecting rod 3 and the lower connecting rod 4 are hinged to the hinge cup 1 via the upper hinge shaft 31 and the lower hinge shaft 41. The outer side of the upper connecting rod 3 protrudes to form a drive platform 32, which is located away from the upper hinge shaft 31. The tail of the drive seat 8 extends rearward to form a support foot 82, which extends into the movement trajectory of the drive platform 32. When the hinge is closed, the drive platform 32 presses on the end face of the support foot 82, driving the drive seat 8 and the slider 6 to move, thereby pushing the buffer 7 to move and generating a damping effect when the door is closed.

[0029] In one embodiment: the drive platform 32 is a boss formed by stamping the upper connecting rod 3 body material outward.

[0030] In one embodiment: the sidewall of the drive platform 32 is also formed with a guide frustum 33 around the center position of the upper hinge shaft, and the drive platform 32 is located on the outer circle of the guide frustum 33.

[0031] In one embodiment: the tail of the drive seat 8 extends rearward with a limiting foot 84, the limiting foot 84 and the support foot 82 are arranged vertically at intervals, and a guide area 85 is formed between the limiting foot 84 and the support foot 82, the guide area 85 is clamped outside the guide frustum 33.

[0032] In one embodiment: the buffer 7 is a compression damping type hydraulic damper, the cylinder part of the buffer 7 is fixed in the mounting base 5, and the piston rod 71 of the buffer 7 is connected to the slider 6.

[0033] In one embodiment: the piston rod 71 is provided with a locking platform 72, and the slider 6 is provided with a locking groove 61. The port of the locking groove 61 is open, and the locking platform 72 passes through the open end of the locking groove 61 and is locked in the locking groove 61.

[0034] In one embodiment: the slot 61 is T-shaped, with its upper cross-sectional width being smaller than its lower cross-sectional width and smaller than the diameter of the piston rod 71.

[0035] In one embodiment: a lower spring post 62 is provided on the slider 6, and correspondingly, an upper spring post 51 is provided on the mounting base 5. One end of the spring 9 is looped around the lower spring post 62 and presses against the end face of the slider 6; the other end is looped around the upper spring post 51 and presses against the end face of the mounting base 5. The spring 9 generates a thrust, pushing the slider 6 to move away from the mounting base 5.

[0036] Working principle: When the door hinge opens or closes, the upper connecting rod 3 and the lower connecting rod 4 are connected to the hinge cup 1 and the hinge arm 2 respectively through the upper hinge shaft 31 and the lower hinge shaft 41. The movement of the upper and lower connecting rods causes them to swing relative to the hinge cup and the hinge arm, pushing the door hinge to open and close the door.

[0037] The buffer 7 is fixed by a mounting base 5 installed on the outside of the hinge cup 1. A slider 6 is embedded in the mounting base, 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 closes too quickly.

[0038] As the door hinge approaches the closed position, the damping effect of the buffer gradually kicks in, slowly and smoothly controlling the movement of slider 6, reducing impact and noise, and ensuring the door closes smoothly.

[0039] The drive seat 8 is located on the inner side of the hinge cup 1, with one side extending outward to form an insert plate 81. The insert plate 81 passes through the guide groove 11 in the inner wall of the hinge cup and connects with the slider 6. The tail of the drive seat has a support foot 82, which cooperates with the drive platform 32 to ensure that the drive platform presses against the end face of the support foot when the hinge is closed.

[0040] When the door hinge closes, the drive platform 32 applies pressure through the end face of the support foot 82, pushing the drive seat 8 and the slider 6 forward, thereby driving the buffer 7 to move. The buffer provides a damping effect when the door closes by controlling the movement speed of the slider, preventing the door hinge from being damaged due to closing too quickly.

[0041] The buffer 7 is a compression-damping hydraulic damper, with the cylinder body fixed inside the mounting base 5 and the piston rod 71 connected to the slider 6. When the slider 6 moves, the piston rod 71 produces a buffering effect under the liquid damping action within the buffer. The buffer design effectively controls the movement speed of the slider, slows down the closing speed of the door hinge, reduces impact and friction, and thus effectively extends the service life of the door hinge.

[0042] Specifically: When the door hinge closes to the designed angle, the drive platform 32 presses against the end face of the support foot 82, pushing the drive 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 slider's movement speed through hydraulic damping, ensuring smooth door closing. Simultaneously, the design of the locking platform and slot ensures the stability of the component connection. The spring further improves the smoothness of the slider's movement. This structure, through external installation of the buffer, not only enhances the buffering effect but also ensures the door hinge's service life and impact resistance, making the door hinge of this invention suitable for various hinge specifications and possessing greater durability and adaptability.

[0043] To ensure a more stable trajectory during the sliding of the drive seat, the tail of the drive seat 8 in this design extends rearward with a limiting foot 84. The limiting foot 84 and the support foot 82 are spaced vertically apart, forming a guide area 85 between them. The guide area 85 is clamped outside the guide frustum 33. The cooperation between the guide frustum and the guide area limits the movement trajectory of the drive seat, enabling it to operate stably and efficiently over a long period, thus allowing for widespread application.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hardware door hinge driven by connecting rod and buffer, 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, characterized in that: The outer side of the hinge cup (1) is provided with a mounting seat (5), and a sliding block (6) embedded in the mounting seat (5), a buffer (7) is fixed in the mounting seat (5), and the other end of the buffer (7) is connected with the sliding block (6), and the buffer (7) is used for controlling the movement speed of the sliding block (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 a plug plate (81), and a guide groove (11) is correspondingly formed in the inner side wall of the hinge cup (1), and the plug plate (81) is connected with the sliding block (6) through the guide groove (11). The upper connecting rod (3) and the lower connecting rod (4) are hinged with the hinge cup (1) through an upper hinge shaft (31) and a lower hinge shaft (41), and the outer side of the upper connecting rod (3) protrudes to form a driving table (32), which is arranged away from the upper hinge shaft (31), and the tail of the driving seat (8) extends backward to form a supporting leg (82), which extends into the movement track of the driving table (32), and when the hinge is closed, the driving table (32) is pressed on the end face of the supporting leg (82), so as to drive the driving seat (8) and the sliding block (6) to move, thereby driving the buffer (7) to move, and generating the damping effect when the door is closed.

2. A hinge for a hardware door according to claim 1, wherein: The driving table (32) is a boss formed by outward stamping of the upper connecting rod (3).

3. A hardware door hinge with a link driven buffer according to claim 1, characterized in that: The side wall of the driving table (32) is further formed with a guide circular table (33) around the center position of the upper hinge shaft, and the driving table (32) is located on the outer circle of the guide circular table (33).

4. A hardware door hinge with a link driven buffer according to claim 3, characterized in that: The tail of the driving seat (8) further extends a limiting leg (84), which is arranged in an upper and lower interval with the supporting leg (82), and a guide area (85) is formed between the limiting leg (84) and the supporting leg (82), and the guide area (85) is clamped outside the guide circular table (33).

5. A hardware door hinge with a link driven buffer according to claim 1, characterized in that: The buffer (7) is a compression damping type hydraulic damper, and 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 with the sliding block (6).

6. A hardware door hinge with a link driven buffer according to claim 5, characterized in that: The piston rod (71) is provided with a clamping table (72), and the sliding block (6) is provided with a clamping groove (61), and the port of the clamping groove (61) is open, and the clamping table (72) passes through the open end of the clamping groove (61) and is clamped in the clamping groove (61).

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

8. A hardware door hinge with a link driven buffer according to claim 1, characterized in that: The sliding block (6) is provided with a lower spring column (62), and correspondingly, an upper spring column (51) is arranged on the mounting seat (5), one end of the spring (9) is sleeved on the lower spring column (62) and is pressed on the end face of the sliding block (6), and the other end is sleeved on the upper spring column (51) and is pressed on the end face of the mounting seat (5), the spring (9) generates a pushing force to push the sliding block (6) and the mounting seat (5) to move away from each other.

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