Hardware door hinge with external buffering function

Abstract

A hardware door hinge with an external buffering function comprises a hinge cup and hinge arms, the hinge cup and the hinge arms are hinged through an upper connecting rod and a lower connecting rod, a mounting base and a sliding block are arranged on one outer side face of the hinge cup, 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 limiting 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 receding groove is formed in the inner side wall of the hinge cup, and the insertion plate 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, the outer side face of the upper connecting rod protrudes to form a driving table, the driving table is arranged away from the hinge point of the upper connecting rod and the upper hinge shaft, the driving base penetrates through a body of the driving base and is provided with a driving groove, and the driving table is sleeved with the driving groove. When the hinge is closed, the driving table drives the driving base to move through the driving groove, the sliding block pushes the buffer to move, and therefore resistance during door closing is generated.

Description

Technical Field

[0001] The invention relates to a door hinge, in particular to a hardware door hinge with an external buffering function. 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 with external buffering function that 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 an external buffer function, comprising a hinge cup and a hinge arm, the hinge cup is hinged between the hinge arm 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 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 limit 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, an air avoidance groove is opened on the inner side wall of the hinge cup, and the insert plate passes through the air avoidance 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, which is arranged away from the hinge point between the upper connecting rod and the upper hinge shaft. The driving seat is provided with a driving groove through its body, and the driving groove is sleeved outside the driving platform. When the hinge is closed, the driving platform drives the driving seat to move through the driving groove, so that the slider pushes the buffer to move, thereby generating resistance when closing the door; The top of the driving groove is recessed to form a limiting groove, the cross-sectional width of the limiting groove is smaller than the minimum cross-sectional width of the driving platform, and the driving platform is pressed under the limiting groove.

[0005] The lower part of the driving platform is formed by the depression of the upper connecting rod body to form a sliding surface, and one side end of the sliding surface is protrudingly provided with an inner limit platform; the driving seat is extended inward to provide an outer limit platform, and the inner limit platform is clamped on the outer limit platform to push the driving seat to move.

[0006] 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.

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

[0012] A step protruding toward the groove is arranged in the position of the limiting groove corresponding to the driving platform, and the driving platform contacts the step to push the driving seat to move.

[0013] The beneficial effects of the present invention are: 1. Simple structure, low production cost and improved market competitiveness.

[0014] 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.

[0015] The upper connecting rod body is used for linkage buffering drive, which ensures that the hinge moves stably and reliably during closing, avoids uneven force transmission caused by direct buffering of the buffer, and has a good buffering effect. 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 installation of the upper connecting rod 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 with an external buffer function, comprising a hinge cup 2 and a hinge arm 1, wherein the hinge cup 2 is hinged to the hinge arm 1 through an upper connecting rod 3 and a lower connecting rod 10, and the upper connecting rod 3 and the lower connecting rod 10 swing relative to the hinge cup 2 or the hinge arm 1 to realize the opening and closing of the door hinge, wherein a mounting seat 4 and a slider 5 are arranged on an outer side surface of the hinge cup 2, a buffer 7 is fixed in the mounting seat 4, and the other end of the buffer 7 is connected to the slider 5, and the buffer 7 is used to limit the movement speed of the slider 5; The inner side of the hinge cup 2 is provided with a driving seat 6, one side of the driving seat 6 extends outward to form an insert plate 61, and correspondingly, an air avoidance groove 21 is opened on the inner side wall of the hinge cup 2, and the insert plate 61 passes through the air avoidance groove 21 and is connected to the slider 5; The upper connecting rod 3 and the lower connecting rod 10 are hinged to the hinge cup 2 through the upper hinge shaft 11 and the lower hinge shaft 12. The outer side surface of the upper connecting rod 3 is protruded to form a driving platform 31, and the driving platform 31 is arranged away from the hinge point of the upper connecting rod 3 and the upper hinge shaft 11. The driving seat 6 is provided with a driving groove 62 through its body, and the driving groove 62 is sleeved outside the driving platform 31. When the hinge is closed, the driving platform 31 drives the driving seat 6 to move through the driving groove 62, so that the slider 5 pushes the buffer 7 to move, thereby generating resistance when closing the door; The top of the driving groove 62 is recessed to form a limiting groove 63 . The cross-sectional width of the limiting groove 63 is smaller than the minimum cross-sectional width of the driving platform 31 . The driving platform 31 is pressed under the limiting groove 63 .

[0025] The lower part of the driving platform 31 is recessed by the upper connecting rod 3 to form a sliding surface 32, and an inner limit platform 33 is protruding from one side end of the sliding surface 32; the driving seat 6 is extended inward to form an outer limit platform 65, and the inner limit platform 33 is clamped on the outer limit platform 65 to push the driving seat 6 to move.

[0026] The buffer 7 is a compression damping type hydraulic damper, a cylinder body 71 of the buffer 7 is fixed in the mounting seat 4 , and a piston rod 72 of the buffer 7 is connected to the slider 5 .

[0027] The piston rod 72 is provided with a clamping platform 73, and the slider 5 is provided with a clamping slot 51, one end of the clamping slot 51 is open, and the clamping platform 73 passes through the open end of the clamping slot 51 and is clamped in the clamping slot 51; The other end of the card slot 51 passes through the slider 5 body to form a slot 52 , and the inserting plate 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 clamping platform 73 is between the inserting plate 61 and the card slot 51 .

[0028] 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 72 .

[0029] 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 8 is looped on the upper spring column 53 and pressed against the end face of the slider 5; the other end is looped on the lower spring column 41 and pressed against the end face of the mounting seat 4. The spring 8 generates a thrust to push the slider 5 and the mounting seat 4 to move away from each other.

[0030] 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 .

[0031] The outer wall of the mounting seat 4 is obliquely provided with a mounting groove 42, and a hinge hole is opened through the inner wall of the mounting groove 42. The upper hinge shaft 11 and the lower hinge shaft 12 are connected by a connecting shaft 13, and the upper hinge shaft 11 is inserted into the hinge hole to fix the mounting seat 4 on the outer surface of the hinge cup 2.

[0032] A step 64 protruding toward the groove is provided in the limiting groove 63 at a position corresponding to the driving platform 31 , and the driving platform 31 contacts the step 64 to push the driving seat 6 to move.

[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, and the lower connecting rod is hinged to the lower hinge shaft. A driving platform is protrudingly formed on the outer side of the upper connecting rod, and the driving platform is distributed away from the hinge point between the upper connecting rod and the upper hinge shaft.

[0035] A driving seat is arranged on the inner side of the hinge cup, and the plug plate formed outward from the driving seat is sequentially passed through the air-avoiding groove of the hinge cup to connect with the slider, so that the movement of the driving seat and the movement of the slider are synchronously controlled. Corresponding to the position of the driving platform, a driving groove is opened in the driving seat, and the driving sleeve is mounted on the driving platform. When the hinge cup is closed, the hinge cup transitions from the open state to the closed state, and the upper connecting rod drives the driving platform to rotate. At this time, the driving platform is clamped on the top of the driving groove, 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 a sliding surface is formed by the depression of the upper connecting rod body below the driving platform, and an inner limit platform is protrudingly provided at one side end of the sliding surface. At the same time, an outer limit platform is formed by extending inward at the end of the driving seat. When the upper connecting rod starts to rotate, the outer limit platform rotates relatively along the sliding door. At this time, the driving platform has not yet been pressed and connected with the step at the top of the driving groove, and the driving platform does not drive the driving seat. The driving seat is stationary at this time. Until the required buffering angle is reached, the inner limit platform is pressed and connected with the outer limit platform. The inner limit platform generates a driving force on the driving seat through the outer limit platform. The driving platform is pressed and connected with the step of the driving groove, thereby bringing a driving force to the driving seat, driving the buffer to start buffering. Therefore, there is no buffering intervention in the initial stage of closing of this hinge, and buffering can only be performed after closing to the set angle, so that this hinge is lighter when closing.

[0038] Furthermore: 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 upper connecting rod body is used for linkage buffering drive, and the two 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 the buffer effect is ideal, which well protects the buffer body and extends its service life.

[0039] In addition, in the present case, 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 around the upper spring column and pressed against the end face of the slider; while the other end of the spring is looped around 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, thereby providing a buffering basis for the next opening and closing of the door hinge.

[0040] Furthermore, a guide platform is provided at the end of the slider, which is extended and installed in the air avoidance groove of the hinge cup to guide the movement trajectory of the slider, ensure the correct operation of the slider, and ensure that the buffer can operate normally, stably and efficiently 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. A hardware door hinge with an external buffer function, comprising a hinge cup (2) and a hinge arm (1), wherein the hinge cup (2) is hinged to the hinge arm (1) through an upper connecting rod (3) and a lower connecting rod (10), and the upper connecting rod (3) and the lower connecting rod (10) 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 (7) is fixed in the mounting seat (4), the other end of the buffer (7) is connected to the slider (5), and the buffer (7) is used to limit the movement speed of the slider (5); The inner side surface of the hinge cup (2) is provided with a driving seat (6), one side of the driving seat (6) extends outward to form an insert plate (61), and correspondingly, an air avoidance groove (21) is opened on the inner side wall of the hinge cup (2), and the insert plate (61) passes through the air avoidance groove (21) and is connected to the slider (5); The upper connecting rod (3) and the lower connecting rod (10) are hinged to the hinge cup (2) via an upper hinge shaft (11) and a lower hinge shaft (12); a driving platform (31) is protruded from the outer side surface of the upper connecting rod (3); the driving platform (31) is arranged away from the hinge point between the upper connecting rod (3) and the upper hinge shaft (11); a driving groove (62) is formed through the driving seat (6) and the driving groove (62) is sleeved outside the driving seat (31); when the hinge is closed, the driving seat (31) drives the driving seat (6) to move via the driving groove (62), so that the slider (5) pushes the buffer (7) to move, thereby generating resistance when closing the door.

2. The hardware door hinge with external buffer function according to claim 1, characterized in that: The top of the driving groove (62) is recessed to form a limiting groove (63), the cross-sectional width of the limiting groove (63) is smaller than the minimum cross-sectional width of the driving platform (31), and the driving platform (31) is pressed under the limiting groove (63).

3. The hardware door hinge with external buffer function according to claim 1, characterized in that: The lower part of the driving platform (31) is formed by a sliding surface (32) formed by a depression of the upper connecting rod (3) body, and an inner limit platform (33) is protrudingly provided at one side end of the sliding surface (32); the driving seat (6) is provided with an outer limit platform (65) extending inward, and the inner limit platform (33) is clamped on the outer limit platform (65) to push the driving seat (6) to move.

4. The hardware door hinge with external buffer function according to claim 1, characterized in that: The buffer (7) is a compression damping type hydraulic damper. The cylinder body (71) of the buffer (7) is fixed in the mounting seat (4), and the piston rod (72) of the buffer (7) is connected to the slider (5).

5. The hardware door hinge with external buffer function according to claim 4, characterized in that: The piston rod (72) is provided with a clamping platform (73), the slider (5) is provided with a clamping slot (51), one end of the clamping slot (51) is open, and the clamping platform (73) passes through the open end of the clamping slot (51) and is clamped in the clamping slot (51); The other end of the card slot (51) passes through the body of the slider (5) and is provided with a slot (52); the insert plate (61) passes through the avoidance groove (21) and is inserted into the slot (52); the slot (52) and the card slot (51) are connected to each other, and the clamping platform (73) is clamped between the insert plate (61) and the card slot (51).

6. The hardware door hinge with external buffer function according to claim 5, 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 (72).

7. The hardware door hinge with external buffer function 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 (8) 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 (8) generates a thrust to push the slider (5) and the mounting seat (4) to move away from each other.

8. The hardware door hinge with external buffer function 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).

9. The hardware door hinge with external buffer function according to claim 1, characterized in that: The outer wall of the mounting seat (4) is obliquely provided with a mounting groove (42), and a hinge hole is opened through the inner wall of the mounting groove (42). The upper hinge shaft (11) and the lower hinge shaft (12) are connected by a connecting shaft (13), and the upper hinge shaft (11) is inserted into the hinge hole to fix the mounting seat (4) on the outer side surface of the hinge cup (2).

10. The hardware door hinge with external buffer function according to claim 2, characterized in that: A step (64) protruding toward the inside of the groove is provided in the limiting groove (63) at a position corresponding to the driving platform (31), and the driving platform (31) contacts the step (64) to push the driving seat (6) to move.

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