External linkage buffer door hinge

Abstract

An external linkage buffering door hinge 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, the upper connecting rod and the lower connecting rod swing relative to the hinge cup or the hinge arm to achieve opening and closing of the door hinge, a mounting seat and a sliding block are arranged on one outer side face of the hinge cup, a buffer is fixed in the mounting seat, and the other end of the buffer is connected with the sliding block. 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 end of the driving seat extends outwards to form a driving table, correspondingly, a receding groove is formed in the side wall of the hinge cup, and the driving table penetrates through the receding 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, a gear is installed on the upper hinge shaft or the lower hinge shaft, a gear groove is formed in the driving base, the gear is meshed with the gear groove, and when the hinge is closed, the gear drives the driving base to move through the gear groove, so that the sliding block pushes the buffer to move. Therefore, damping force during door closing is generated.

Description

Technical Field

[0001] The invention relates to a door hinge, in particular to an external linkage buffer door hinge. 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 an external linkage buffer door hinge with simple structure, low production cost, ideal buffering effect, convenient disassembly and assembly, improved impact resistance and pressure resistance, and suitable for use with door hinges of various types and specifications.

[0004] The object of the present invention is achieved in the following manner: an external linkage buffer door hinge, 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, 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, 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; A driving seat is arranged on the inner side of the hinge cup, one end of which extends outward to form a driving platform. Correspondingly, a clearance groove is opened on the side wall of the hinge cup, and the driving platform passes through the clearance 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. A gear is installed on the upper hinge shaft or the lower hinge shaft. A gear groove is provided on the driving seat. The gears are engaged with the gear grooves. When the hinge is closed, the gears drive the driving seat to move through the gear grooves, so that the slider pushes the buffer to move, thereby generating a damping force when closing the door.

[0005] The buffer is a compression damping type hydraulic damper, the cylinder body of the buffer is fixed in the mounting seat, and the piston rod of the buffer is connected with the sliding block.

[0006] The piston rod is provided with a clamping platform, the slider is provided with a clamping slot, 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.

[0007] The other end of the card slot is provided with a slot penetrating through the slider body, and the driving platform is inserted into the slot through the avoidance groove; the slot is connected with the card slot to clamp the card platform between the driving platform and the card slot.

[0008] 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.

[0009] An upper spring column is arranged on the slider, and correspondingly, a lower spring column is arranged on the mounting seat. One end of the spring is looped on the upper spring column and pressed against the end surface of the slider; the other end is looped on the lower 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.

[0010] The air avoidance groove is arranged through the side surface of the hinge cup, and the end of the slider protrudes from the end surface of the body and is provided with a guide platform, which extends into the air avoidance groove and slides along the air avoidance groove.

[0011] The gear is fixedly connected to the upper hinge shaft or the lower hinge shaft through a shaft sleeve.

[0012] The outer wall of the mounting seat is obliquely provided with a mounting groove, and a hinge hole is opened through the inner wall of the mounting groove. The upper hinge shaft and the lower hinge shaft are connected by a connecting shaft, and the upper hinge shaft is inserted into the hinge hole to fix the mounting seat on the outer side of the hinge cup.

[0013] The lower end surface of the driving seat is provided with a sliding surface, and the sliding surface covers and slides on the cup bottom of the hinge cup.

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

[0015] The buffer is installed on the outside of the hinge cup and is no longer limited by the narrow space inside the hinge cup. This significantly improves the buffer's buffering performance and is suitable for installation and use on hinges of various types and specifications, with stronger impact resistance and durability.

[0016] The gears and gear grooves cooperate with each other to ensure stable and reliable movement of the hinge during closing, avoid uneven force transmission caused by direct buffering of the buffer, achieve ideal buffering effect, protect the buffer body and extend its service life.

[0017] The buffer is automatically reset by a spring, which further improves the user's convenience and efficiency and ensures the buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the open state of the door hinge in the present invention.

[0019] Figure 2 It is a schematic diagram of the closed state of the door hinge in the present invention.

[0020] Figure 3 It is a structural assembly diagram of the hinge cup and hinge arm in the present invention.

[0021] Figure 4-5 This is a schematic diagram of the installation after the sliding hinge cup and hinge arm are hidden in the present invention.

[0022] Figure 6 It is a structural assembly diagram of the mounting seat, slider and driving seat in the present invention. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below with reference to the accompanying drawings. An external linkage buffer door hinge, comprising a hinge cup 2 and a hinge arm 1, the hinge cup 2 and the hinge arm 1 are hinged via an upper connecting rod 31 and a lower connecting rod 32, the upper connecting rod 31 and the lower connecting rod 32 swing relative to the hinge cup 2 or the hinge arm 1 to achieve the opening and closing of the door hinge, a mounting seat 4 and a slider 5 are provided on an outer side of the hinge cup 2, a buffer 9 is fixed in the mounting seat 4, the other end of the buffer 9 is connected to the slider 5, and the buffer 9 is used to control the movement speed of the slider 5; The inner side of the hinge cup 2 is provided with a driving seat 6, one end of the driving seat 6 extends outward to form a driving platform 61, and correspondingly, a clearance groove 21 is opened on the side wall of the hinge cup 2, and the driving platform 61 passes through the clearance groove 21 and is connected to the slider 5; The upper connecting rod 31 and the lower connecting rod 32 are hinged to the hinge cup 2 through the upper hinge shaft 71 and the lower hinge shaft 72. The upper hinge shaft 71 or the lower hinge shaft 72 is equipped with a gear 8. The drive seat 6 is provided with a gear groove 62. The gear 8 is engaged with the gear groove 62. When the hinge is closed, the gear 8 drives the drive seat 6 to move through the gear groove 62, so that the slider 5 pushes the buffer 9 to move, thereby generating a damping force when closing the door.

[0024] The buffer 9 is a compression damping type hydraulic damper. The cylinder 91 of the buffer 9 is partially fixed in the mounting seat 4 , and the piston rod 92 of the buffer 9 is connected to the slider 5 .

[0025] The piston rod 92 is provided with a clamping platform 63 , and the slider 5 is provided with a clamping slot 51 . The end of the clamping slot 51 is open, and the clamping platform 63 passes through the open end of the clamping slot 51 and is clamped in the clamping slot 51 .

[0026] The other end of the card slot 51 penetrates through the slider 5 body to form a slot 52 , and the driving platform 61 passes through the avoidance groove 21 and is inserted into the slot 52 ; the slot 52 is connected to the card slot 51 , and the card platform 63 is clamped between the driving platform 61 and the card slot 51 .

[0027] The clamping groove 51 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 92 .

[0028] The slider 5 is provided with an upper spring column 53, and correspondingly, the mounting seat 4 is provided with a lower spring column 41. One end of the spring 10 is looped on the upper spring column 53 and pressed against the end surface of the slider 5; the other end is looped on the lower spring column 41 and pressed against the end surface of the mounting seat 4. The spring 10 generates a thrust to push the slider 5 and the mounting seat 4 to move away from each other.

[0029] The air avoidance groove 21 is arranged through the side surface of the hinge cup 2 , and the end of the slider 5 protrudes from the end surface of the body and is provided with a guide platform 54 . The guide platform 54 extends into the air avoidance groove 21 and slides along the air avoidance groove 21 .

[0030] The gear 8 is fixedly connected to the upper hinge shaft 71 or the lower hinge shaft 72 via a shaft sleeve 81 .

[0031] The outer wall of the mounting seat 4 is obliquely provided with a mounting groove, and a hinge hole is opened through the inner wall of the mounting groove. The upper hinge shaft 71 and the lower hinge shaft 72 are connected by a connecting shaft 73, and the upper hinge shaft 71 is inserted into the hinge hole to fix the mounting seat 4 on the outer surface of the hinge cup 2.

[0032] The lower end surface of the driving seat 6 is provided with a sliding surface, and the sliding surface covers and slides on the cup bottom of the hinge cup 2 .

[0033] Working principle: A mounting seat is provided on the outer end surface of one side of the hinge cup, and the buffer is fixedly connected in the mounting seat. At the same time, a slider is provided above the mounting seat, and the piston rod of the buffer is connected to the slider, and the running speed of the slider is controlled by the buffer.

[0034] The hinge cup and the hinge arm are hinged by an upper connecting rod and a lower connecting rod, wherein the upper connecting rod is hinged to the upper hinge shaft, the lower connecting rod is hinged to the lower hinge shaft, and the two hinge shafts are connected as a whole by a connecting shaft. A gear is fixedly installed on the upper hinge shaft or the lower hinge shaft through a shaft sleeve, and the gear is coaxially fixedly connected with the upper connecting rod or the lower connecting rod.

[0035] Among them, a driving seat is arranged on the inner side of the hinge cup, and the driving platform formed by the driving seat extending outward is connected to the slider, so that the movement of the driving platform and the movement of the slider are synchronously controlled. Corresponding to the position of the gear, a plurality of gear grooves are arranged on the driving seat, and the gears are meshed and assembled with the gear grooves. When the hinge cup is closed, the hinge cup transitions from the open state to the closed state, and the upper hinge shaft or the lower hinge shaft drives the gear to rotate. At this time, the gear is meshed with the gear groove, thereby driving the driving seat to move linearly, which can drive the slider to drive the buffer to work buffering.

[0036] Furthermore, since the buffer is a compression damping type damper, the slider pushes the piston rod to move in the cylinder body, providing a certain damping force to the movement of the slider, and the two cooperate with each other to buffer and offset the impact force, thereby achieving a buffering effect for the door hinge during the closing process. Among them, the piston rod clamping platform and the slider clamping groove are closely matched with each other, and the T-shaped structure of the clamping groove ensures the stable connection between the slider and the piston rod, while facilitating the user to assemble the buffer.

[0037] It should be noted that when the upper connecting rod or the lower connecting rod starts to rotate, the gear and the gear groove have not yet started to mesh, the gear is idling in the end face direction of the driving seat, the gear does not drive the driving seat, and the driving seat is stationary. When the required buffering angle is reached, the gear and the gear groove begin to mesh, bringing driving force to the driving seat, which is transmitted to the slider through the movement of the driving seat, driving the buffer to start buffering. This design prevents the hinge from participating in buffering in the initial stage of closing, making it easier and more convenient for users to close the door.

[0038] In this case, the buffer is different from the traditional one embedded inside the hinge cup. The buffer is installed on the outside of the hinge cup, so that the buffer is no longer limited by the narrow space inside the hinge cup. The buffer can be designed with a larger capacity, significantly improving the buffer's buffering performance, and is suitable for installation and use of hinges of various types and specifications, with stronger impact resistance and durability. At the same time, the gears and gear grooves cooperate with each other to ensure the stable and reliable movement of the hinge during closing, avoiding the uneven force transmission caused by the direct buffering of the buffer, and achieving an ideal buffering effect, which well protects the buffer body and extends its service life.

[0039] In addition, an upper spring column is provided on the slider, and a lower spring column is provided on the mounting seat corresponding to the position of the upper spring column. One end of the spring is looped on the upper spring column and pressed against the end face of the slider; the other end of the spring is looped on the lower spring column and pressed against the end face of the mounting seat. The spring generates an outward thrust on the slider body, always pushing the slider to move away from the mounting seat end, prompting the buffer to return to its initial position, providing a buffering basis for the next door hinge opening and closing.

[0040] Furthermore, a guide platform is provided at the end of the slider, and the guide platform is extended and installed in the air avoidance groove of the hinge cup to guide and limit the movement trajectory of the slider, ensuring that the slider can work stably and smoothly for a long time, so it can be widely promoted and used.

[0041] 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. An external linkage buffer door hinge, comprising a hinge cup (2) and a hinge arm (1), wherein the hinge cup (2) and the hinge arm (1) are hingedly connected via an upper connecting rod (31) and a lower connecting rod (32), wherein the upper connecting rod (31) and the lower connecting rod (32) swing relative to the hinge cup (2) or the hinge arm (1) to realize the opening and closing of the door hinge, characterized in that: An outer side surface of the hinge cup (2) is provided with a mounting seat (4) and a slider (5), a buffer (9) is fixed in the mounting seat (4), the other end of the buffer (9) is connected to the slider (5), and the buffer (9) is used to control the movement speed of the slider (5); A driving seat (6) is provided on the inner side surface of the hinge cup (2), one end of the driving seat (6) extends outward to form a driving platform (61), and correspondingly, a clearance groove (21) is provided on the side wall of the hinge cup (2), and the driving platform (61) passes through the clearance groove (21) and is connected to the slider (5); The upper connecting rod (31) and the lower connecting rod (32) are hinged to the hinge cup (2) via an upper hinge shaft (71) and a lower hinge shaft (72); a gear (8) is mounted on the upper hinge shaft (71) or the lower hinge shaft (72); a gear groove (62) is arranged on the drive seat (6); the gear (8) meshes with the gear groove (62); when the hinge is closed, the gear (8) drives the drive seat (6) to move via the gear groove (62), causing the slider (5) to push the buffer (9) to move, thereby generating a damping force when the door is closed.

2. The external linkage buffer door hinge according to claim 1, characterized in that: The buffer (9) is a compression damping type hydraulic damper. The cylinder body (91) of the buffer (9) is fixed in the mounting seat (4), and the piston rod (92) of the buffer (9) is connected to the slider (5).

3. The external linkage buffer door hinge according to claim 2, characterized in that: The piston rod (92) is provided with a clamping platform (63), the slider (5) is provided with a clamping slot (51), the end of the clamping slot (51) is open, and the clamping platform (63) passes through the open end of the clamping slot (51) and is clamped in the clamping slot (51).

4. The external linkage buffer door hinge according to claim 3, characterized in that: The other end of the card slot (51) passes through the body of the slider (5) and is provided with a slot (52), and the driving platform (61) passes through the air-avoiding groove (21) and is inserted into the slot (52); the slot (52) and the card slot (51) are connected to each other, and the card platform (63) is clamped between the driving platform (61) and the card slot (51).

5. The external linkage buffer door hinge according to claim 3, characterized in that: The clamping groove (51) 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 (92).

6. The external linkage buffer door hinge according to claim 1, characterized in that: The slider (5) is provided with an upper spring column (53), and correspondingly, the mounting seat (4) is provided with a lower spring column (41). One end of the spring (10) is looped on the upper spring column (53) and pressed against the end surface of the slider (5); the other end is looped on the lower spring column (41) and pressed against the end surface of the mounting seat (4). The spring (10) generates a thrust to push the slider (5) and the mounting seat (4) to move away from each other.

7. The external linkage buffer door hinge according to claim 1, characterized in that: The air avoidance groove (21) is arranged through the side surface of the hinge cup (2); the end of the sliding block (5) protruding from the end surface of the main body is provided with a guide platform (54); the guide platform (54) extends into the air avoidance groove (21) and slides along the air avoidance groove (21).

8. The external linkage buffer door hinge according to claim 1, characterized in that: The gear (8) is fixedly connected to the upper hinge shaft (71) or the lower hinge shaft (72) via a shaft sleeve (81).

9. The external linkage buffer door hinge according to claim 1, characterized in that: The outer wall of the mounting seat (4) is obliquely provided with a mounting groove, and a hinge hole is opened through the inner wall of the mounting groove. The upper hinge shaft (71) and the lower hinge shaft (72) are connected by a connecting shaft (73), and the upper hinge shaft (71) is inserted into the hinge hole to fix the mounting seat (4) on the outer side surface of the hinge cup (2).

10. The external linkage buffer door hinge according to claim 1, characterized in that: The lower end surface of the driving seat (6) is provided with a sliding surface, and the sliding surface covers and slides on the cup bottom of the hinge cup (2).

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