Novel hinge with adjustable buffering stroke

Abstract

The utility model discloses a novel buffer stroke adjustable hinge which comprises a hinge cup and a hinge arm, and a connecting rod assembly is arranged between the hinge cup and the hinge arm to achieve hinge opening and closing. In addition, the hinge further comprises a buffer assembly and a shifting block, the buffer assembly is arranged at the hinge cup and comprises a buffer, a transmission piece in transmission connection with the telescopic end of the buffer and a driving block in transmission connection with the transmission piece, and the driving block is in transmission fit with the connecting rod assembly. The shifting block is arranged on the hinge cup in a sliding mode and matched with the transmission piece in an abutting mode, and the shifting block is provided with a first position and a second position on the hinge cup. When the shifting block is shifted to a second position and the hinge cup is driven to be opened to a certain angle, the transmission sheet is propped against the shifting block to limit the buffer from resetting; when the shifting block is shifted to the first position, the shifting block is separated from the transmission piece so that the buffer can be reset. Therefore, the buffer stroke of the buffer can be adjusted by shifting the shifting block, and a user can select a proper buffer stroke according to different use scenes and requirements, so that the requirements are met, and the use experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of buffer hinge technology, specifically to a novel adjustable buffer stroke hinge. Background Technology

[0002] This section provides only background information related to this application to enable those skilled in the art to understand this application more thoroughly and accurately, and it is not necessarily prior art.

[0003] In modern daily life, hardware hinges are widely used in the connection and opening / closing mechanisms of various containers, furniture, and electronic devices. To improve the comfort of using hinges and extend their service life, soft-close hinges have emerged. They mainly achieve smooth buffering during the hinge closing process by setting up a buffer device, preventing large impacts and noise caused by rapid closing.

[0004] Currently, most buffer hinges on the market do not allow for adjustment of their buffer travel, preventing users from selecting the appropriate buffer travel according to different usage scenarios and needs, thus reducing the user experience. Utility Model Content

[0005] In order to overcome the defects of the prior art, the present invention provides a novel adjustable buffer travel hinge, which can solve the problem mentioned in the background art of the inability to adjust the buffer travel of the buffer.

[0006] The technical solution adopted by this utility model to solve its problem is:

[0007] A novel adjustable-stroke, buffered hinge includes:

[0008] A hinge cup and a hinge arm, wherein a connecting rod assembly is provided between the hinge cup and the hinge arm to realize hinged opening and closing;

[0009] A buffer assembly is disposed at the hinge cup and includes a buffer, a transmission plate that is pulsatorically connected to the telescopic end of the buffer, and a drive block that is pulsatorically connected to the transmission plate. The drive block is pulsatorically engaged with the linkage assembly.

[0010] A lever, which is slidably disposed on the hinge cup and is used to abut against the transmission plate, the lever having a first position and a second position on the hinge cup;

[0011] When the lever is in the first position, the lever is separated from the transmission plate, and the telescopic end of the buffer can be fully reset. When the lever is moved to the second position and the hinge cup is opened, the telescopic end of the buffer is reset and the transmission plate is reset. Until the hinge cup is opened to a certain angle, the transmission plate abuts against the lever. At this time, the reset of the transmission plate is restricted, and the buffer cannot continue to reset.

[0012] Furthermore, when the lever is moved to the second position and the hinge cup is closed, the transmission plate can be moved, which in turn causes the telescopic end of the buffer to extend and retract until the hinge cup is closed to a certain angle, at which point the transmission plate abuts against the lever. Then, under the action of the hinge closing force, the transmission plate can be moved past the abutting position so that the hinge cup can continue to close.

[0013] Furthermore, the paddle block is provided with a first protrusion, and the transmission plate is provided with a second protrusion, wherein:

[0014] When the lever is moved to the second position and the hinge cup is closed to a certain angle, the second protrusion on the transmission plate can abut against the first protrusion of the lever. Then, under the action of the hinge closing force, the second protrusion can pass over the first protrusion, and the hinge cup can continue to close and drive the telescopic end of the buffer to extend and retract through the transmission plate until the hinge cup is completely closed.

[0015] When the hinge cup is then reopened, the buffer resets and drives the transmission plate to reset until the hinge cup is opened to a certain angle. At this point, the second protrusion on the transmission plate abuts against the first protrusion again, and the reset of the transmission plate is restricted, preventing the buffer from resetting. The hinge cup then continues to open until it is fully open.

[0016] Furthermore, the lever is made of plastic.

[0017] Furthermore, it also includes a mounting base installed on the hinge cup, with both the buffer and the transmission plate disposed within the mounting base; the toggle block is slidably disposed on the mounting base and partially passes through the hinge cup.

[0018] Furthermore, the lever includes a lever body, and the mounting base has a mounting groove, on which the lever body is slidably disposed;

[0019] The main body of the lever is provided with a lever part, and the hinge cup is provided with a limiting hole through which the lever part can pass so that the user can lever it; when the lever part is levered to be located at both ends of the limiting hole and restricted by the limiting hole, the lever is in the first position and the second position respectively.

[0020] Furthermore, the drive block is rotatably mounted on the hinge cup; a drive shaft passes through the drive block, and the drive shaft passes through the hinge cup and is connected to the connecting rod assembly in a transmission manner.

[0021] Furthermore, the linkage assembly includes an upper linkage and a lower linkage. One end of the upper linkage is hinged to the hinge cup, and the other end is hinged to the hinge arm. One end of the lower linkage is hinged to the hinge cup, and the other end is hinged to the hinge arm. The drive shaft passes through the hinge cup and is connected to the upper linkage in a driving manner.

[0022] Furthermore, it also includes a U-shaped needle, which includes a first pin and a second pin. One end of the upper connecting rod and the driving block are both hinged to the hinge cup via the first pin, and one end of the lower connecting rod is hinged to the hinge cup via the second pin.

[0023] Furthermore, a torsion spring is provided at the hinge joint between the upper connecting rod and the hinge arm. A first torsion arm and a second torsion arm extend from both ends of the torsion spring, respectively. The first torsion arm abuts against the inner side of the hinge arm, and the second torsion arm abuts against the lower connecting rod to provide hinge closing force.

[0024] In summary, this utility model provides a novel adjustable buffer travel hinge. When the user moves the lever to the second position and opens the hinge to a certain angle, the transmission plate abuts against the lever. At this point, the return of the transmission plate is restricted, and the buffer cannot continue to return to its original position, thus reducing the buffer travel. For kitchen cabinet doors, a smaller buffer travel allows for quick closing of the door, improving work efficiency. When the user moves the lever back to the first position, the transmission plate separates from the lever, and the buffer can fully return to its original position, thus increasing the buffer travel. For bedroom cabinet doors, a larger buffer travel allows the door to close slowly, reducing noise and impact, and improving the user experience. Therefore, users can select the appropriate buffer travel according to different usage scenarios and needs, thereby meeting their requirements and improving their user experience. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the adjustable buffer stroke hinge according to Embodiment 1 of this utility model;

[0026] Figure 2 This is an exploded view of the adjustable-stroke buffer hinge according to Embodiment 1 of this utility model;

[0027] Figure 3 for Figure 2 A structural diagram from another perspective;

[0028] Figure 4 This is a schematic diagram of the structure of the adjustable hinge with buffer stroke hidden from the mounting base according to Embodiment 1 of this utility model;

[0029] Figure 5 for Figure 4 A schematic diagram of the structure after hiding the buffer and transmission plate;

[0030] Figure 6 This is a structural schematic diagram of the adjustable hinge with buffer stroke according to Embodiment 1 of this utility model from another perspective;

[0031] Figure 7 for Figure 6 A structural diagram with the connecting rod assembly and U-shaped pin hidden;

[0032] Figure 8 This is a schematic diagram of the structure of the adjustable hinge with buffer stroke in Embodiment 1 of this utility model after the hinge arm is hidden;

[0033] Figure 9 This is a schematic diagram of the structure of the adjustable hinge with buffer stroke fully closed and the mounting base hidden in Embodiment 1 of this utility model;

[0034] Figure 10 This is a schematic diagram of the structure of the adjustable hinge with buffer stroke fully closed and the lever in the second position according to Embodiment 1 of this utility model;

[0035] Figure 11 for Figure 10 A structural diagram with the mounting bracket hidden.

[0036] Figure 12 This is a schematic diagram of the structure of the adjustable hinge with buffer stroke hidden from the mounting base in Embodiment 2 of this utility model;

[0037] Figure 13 for Figure 12 A structural diagram from another perspective.

[0038] The meanings of the reference numerals in the attached figures are as follows:

[0039] 1. Hinge cup; 101. Groove; 102. Limiting hole; 103. Clearance hole; 104. First hinge hole; 105. Second hinge hole; 106. Second locking hole; 107. Opening; 108. First locking hole; 2. Hinge arm; 3. Upper connecting rod; 301. Transmission hole; 302. Third hinge hole; 303. Fourth hinge hole; 4. Lower connecting rod; 5. Buffer; 501. Cylinder body; 502. Piston rod; 6. Transmission plate; 601. Protrusion; 602, Clearance groove; 7, Drive block; 701, Fifth hinge hole; 8, Drive shaft; 9, Mounting base; 901, Mounting slide; 902, Hook; 903, Locking block; 10, Toggle block; 1001, Toggle block body; 1002, Toggle part; 1003, Groove; 1004, Toggle lever; 11, U-shaped needle; 1101, First needle; 1102, Second needle; 12, Torsion spring; 1201, First torsion arm; 1202, Second torsion arm. Detailed Implementation

[0040] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0041] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0043] Example 1

[0044] See Figure 1-11 This utility model provides a novel adjustable buffer stroke hinge, including a hinge cup 1 and a hinge arm 2. A connecting rod assembly is provided between the hinge cup 1 and the hinge arm 2 to realize hinged opening and closing. In addition, it also includes a buffer assembly provided at the hinge cup 1. The buffer assembly includes a buffer 5, a transmission plate 6 that is driven to the telescopic end of the buffer 5, and a drive block 7 that is driven to the transmission plate 6. The drive block 7 is driven to cooperate with the connecting rod assembly.

[0045] Based on the above structure, when the hinge cup 1 is closed, the connecting rod assembly can be driven to swing synchronously. The connecting rod assembly can drive the drive block 7 to rotate. The drive block 7 can drive the transmission plate 6 to move, thereby driving the extension and retraction end of the buffer 5 to extend and retract, thus generating a buffering effect on the hinge cup 1.

[0046] It also includes a lever 10 that slides on the hinge cup 1 and abuts against the transmission plate 6. The lever 10 has a first position and a second position on the hinge cup 1. When the lever 10 is in the first position, the lever 10 is separated from the transmission plate 6. When the lever 10 is moved to the second position, the lever 10 can abut against the transmission plate 6 to limit the retraction end of the buffer 5 from resetting. Specifically, the lever 10 has a first protrusion; the transmission plate 6 has a second protrusion and a clearance groove 602. When the lever 10 is moved to the second position and the hinge cup 1 is closed to a certain angle, the second protrusion on the transmission plate 6 can abut against the first protrusion of the lever 10. Then, under the action of the hinge closing force, the second protrusion can pass over the first protrusion and allow the first protrusion to enter the clearance groove 602. At this time, the hinge cup 1 can continue to close and the transmission plate 6 can continue to drive the telescopic end of the buffer 5 to extend and retract until the hinge cup 1 is completely closed. Then, when the hinge cup 1 is opened again, the buffer 5 resets and drives the transmission plate 6 to reset. Until the hinge cup 1 is opened to a certain angle, the second protrusion on the transmission plate 6 abuts against the first protrusion of the lever 10 again. At this time, the resetting force of the telescopic end of the buffer 5 cannot drive the transmission plate 6 to reset, and the resetting of the transmission plate 6 is restricted, that is, the buffer 5 cannot continue to reset. Then the hinge cup 1 continues to open until it is fully open.

[0047] Specifically, the lever 10 includes a lever body 1001, the bottom of which has a groove 1003, and a lever 1004 protruding from the groove 1003 to form a first protrusion; a clearance groove 602 is formed on one side of the transmission plate 6, and a protrusion 601 is formed on the side of the transmission plate 6 near the clearance groove 602, which forms a second protrusion; when the lever 10 is moved to the second position and the hinge cup 1 is closed to a certain angle, the protrusion 601 on the transmission plate 6 can abut against the lever 1004 of the lever 10, and then the hinge closes. Under the action of force, the protrusion 601 can drive the lever 1004 to move and pass over the lever 1004, and make the lever 1004 enter the clearance groove 602; then when the hinge cup 1 is opened again, the telescopic end of the buffer 5 resets and drives the transmission plate 6 to reset, until the hinge cup 1 is opened to a certain angle, the protrusion 601 on the transmission plate 6 abuts against the lever 1004 again. At this time, the reset force of the telescopic end of the buffer 5 cannot drive the transmission plate 6 to reset, and the reset of the transmission plate 6 is restricted. At this time, the buffer 5 cannot continue to reset; then the hinge cup 1 continues to open until it is fully open.

[0048] Therefore, the buffer stroke of the buffer 5 can be adjusted by moving the toggle block 10. When the toggle block 10 is moved to the second position, the transmission plate 6 abuts against the toggle block 10, thus restricting the reset of the transmission plate 6 and preventing the buffer 5 from resetting further. This reduces the buffer stroke of the buffer 5. For kitchen cabinet doors, a smaller buffer stroke allows for quick closing of the cabinet door, improving work efficiency. When the user moves the toggle block 10 back to the first position, the transmission plate 6 separates from the toggle block 10, allowing the buffer 5 to reset completely. This increases the buffer stroke of the buffer 5. For bedroom cabinet doors, a larger buffer stroke allows the cabinet door to close slowly, reducing noise and impact, and improving the user experience. Therefore, users can choose the appropriate buffer stroke according to different usage scenarios and needs to meet their requirements and improve their user experience.

[0049] Preferably, the lever 10 is a plastic part that can deform under external force, so that when the hinge is closed, the protrusion 601 on the transmission plate 6 abuts against the lever 1004 and can easily pass over the lever 1004 under the hinge closing force, so that there will be no jamming or stagnation.

[0050] Preferably, the buffer 5 is a hydraulic cylinder, which includes a cylinder body 501 and a piston rod 502 disposed on the cylinder body 501. The piston rod 502 abuts against one end of the transmission plate 6 to achieve a transmission connection, and the transmission plate 6 abuts against the drive block 7 to achieve a transmission connection. Thus, when the hinge cup 1 is closed, the connecting rod assembly can be driven to swing synchronously. The connecting rod assembly can drive the drive block 7 to rotate, and the drive block 7 drives the transmission plate 6 to move, thereby compressing the piston rod 502 of the buffer 5, thereby producing a buffering effect on the hinge cup 1.

[0051] See Figure 2-3 as well as Figure 6-7 It also includes a mounting base 9 mounted on the hinge cup 1, and the buffer 5 and the transmission plate 6 are both disposed within the mounting base 9; the toggle block 10 is slidably disposed on the mounting base 9 and partially passes through the hinge cup 1. Preferably, the mounting base 9 has a mounting groove 901, and the toggle block body 1001 is slidably disposed on the mounting groove 901; wherein, the toggle block 10 also includes a toggle part 1002 disposed on the top of the toggle block body 1001, preferably, the toggle part 1002 is a protrusion integrally formed on the top of the toggle block body 1001; the hinge cup 1 has a limiting hole 102 through which the toggle part 1002 can pass to allow the user to toggle; when the toggle part 1002 is toggle to the ends of the limiting hole 102 and is limited by the limiting hole 102, the toggle block 10 is in a first position (e.g. Figure 1 (as shown) and the second position (as shown) Figure 10 (As shown).

[0052] The mounting base 9 has two hooks 902 spaced apart on one side and a locking block 903 protruding on the other side. The hinge cup 1 has a groove 101 in the middle, and an opening 107 is opened at one end of the side of the groove 101. Two first locking holes 108 are arranged at an interval on the opening 107. A second locking hole 106 is opened at the other end of the side of the hinge cup 1. When it is necessary to assemble the mounting base 9 with the buffer 5 onto the hinge cup 1, simply lock the two hooks 902 on one side of the mounting base 9 onto the two first locking holes 108 of the hinge cup 1, and then lock the locking block 903 on the other side of the mounting base 9 into the second locking hole 106 to achieve assembly and fixation.

[0053] Furthermore, the drive block 7 is rotatably mounted on the hinge cup 1, and a drive shaft 8 passes through the drive block 7. The drive shaft 8 passes through the hinge cup 1 and is connected to the linkage assembly for transmission. Specifically, the linkage assembly includes an upper linkage 3 and a lower linkage 4. One end of the upper linkage 3 is hinged to the hinge cup 1, and the other end is hinged to the hinge arm 2. One end of the lower linkage 4 is hinged to the hinge cup 1, and the other end is hinged to the hinge arm 2. The drive shaft 8 passes through the hinge cup 1 and is connected to the upper linkage 3 for transmission.

[0054] Preferably, the hinge cup 1 has a clearance hole 103 through which the drive shaft 8 can pass, and the upper connecting rod 3 has a transmission hole 301 through which the drive shaft 8 can pass and engage to achieve a transmission connection.

[0055] The device also includes a U-shaped needle 11, which includes a first needle 1101 and a second needle 1102. The drive block 7 has a fifth hinge hole 701, and one end of the upper connecting rod 3 has a third hinge hole 302. The hinge cup 1 has a first hinge hole 104. The first needle 1101 passes through the fifth hinge hole 701, the third hinge hole 302, and the first hinge hole 104 to hinge the drive block 7 and one end of the upper connecting rod 3 to the hinge cup 1. In addition, the hinge cup 1 also has a second hinge hole 105. The second needle 1102 passes through one end of the lower connecting rod 4 and the second hinge hole 105 to hinge one end of the lower connecting rod 4 to the hinge cup 1.

[0056] In this embodiment, the other end of the upper connecting rod 3 is provided with a fourth hinge hole 303 that is hinged to the hinge arm 2, and the other end of the lower connecting rod 4 is hinged to the hinge arm 2.

[0057] See Figure 8 A torsion spring 12 is also provided at the hinge joint between the upper connecting rod 3 and the hinge arm 2. The two ends of the torsion spring 12 extend to a first torsion arm 1201 and a second torsion arm 1202, respectively. The first torsion arm 1201 abuts against the inner side of the hinge arm 2, and the second torsion arm 1202 abuts against the lower connecting rod 4 to provide hinge closing force.

[0058] Example 2

[0059] See Figure 12-13 The difference between the hinge in this embodiment and that in Embodiment 1 lies in the arrangement of the buffer 5 and the transmission plate 6. In this embodiment, the cylinder 501 of the buffer 5 faces the drive block 7, while the piston rod 502 of the buffer 5 is positioned away from the drive block 7. The end of the transmission plate 6 closest to the drive block 7 abuts against the drive block 7 to achieve a transmission connection, and the end of the transmission plate 6 away from the drive block 7 is bent upward to form a bent portion, which abuts against the piston rod 502. Thus, when the drive block 7 is rotated counterclockwise, it can drive the transmission plate 6 to move to the right, thereby compressing the piston rod 502 through the bent portion to produce a buffering effect; when the buffer 5 is reset, it can drive the piston rod 502 to extend, thereby driving the transmission plate 6 to move to the left to reset.

[0060] Therefore, by positioning the piston rod 502 of the buffer 5 on the side away from the drive block 7, it does not need to occupy the space within the groove 101 of the hinge cup 1. Thus, unlike in Embodiment 1, it is not necessary to provide an opening 107 on the side of the hinge cup 1, and the side of the groove 101 of the hinge cup 1 can be sealed (e.g., Figure 13 (As shown). Thus, when the mounting base 9 is installed on the hinge cup 1, it can "hide" the buffer component, making the hinge overall simpler and more aesthetically pleasing.

[0061] In addition, a protrusion 601 is provided on the top of the bent portion of the transmission plate 6. The protrusion 601 forms a second protrusion and is used to abut against the lever 1004 of the lever block 10. Thus, when the hinge cup 1 is closed, the protrusion 601 can abut against and pass over the lever 1004 so that the hinge cup 1 continues to close with buffer. When the hinge cup 1 is opened, the protrusion 601 can abut against the lever 1004 again and be limited by the lever 1004, so that the buffer 5 cannot continue to reset. The cooperation process between the transmission plate 6 and the lever block 10 is the same as that in Embodiment 1, and will not be described again here.

[0062] In summary, this utility model provides a novel adjustable buffer travel hinge. When the user moves the lever 10 to the second position and opens the hinge to a certain angle, the transmission plate 6 abuts against the lever 10. At this time, the reset of the transmission plate 6 is restricted, and the buffer 5 cannot continue to reset, thereby reducing the buffer travel of the buffer 5. For kitchen cabinet doors, a smaller buffer travel allows for quick closing of the cabinet door, improving work efficiency. When the user moves the lever 10 back to the first position, the transmission plate 6 separates from the lever 10, and the buffer 5 can fully reset, thereby increasing the buffer travel of the buffer 5. For bedroom cabinet doors, a larger buffer travel allows the cabinet door to close slowly, reducing noise and impact, and improving the user experience. Therefore, users can select the appropriate buffer travel according to different usage scenarios and needs, thereby meeting their requirements and improving their user experience.

[0063] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0064] It should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0065] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0066] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A novel adjustable-stroke buffer hinge, characterized in that, include: A hinge cup and a hinge arm, wherein a connecting rod assembly is provided between the hinge cup and the hinge arm to realize hinged opening and closing; A buffer assembly is disposed at the hinge cup and includes a buffer, a transmission plate that is pulsatorically connected to the telescopic end of the buffer, and a drive block that is pulsatorically connected to the transmission plate. The drive block is pulsatorically engaged with the linkage assembly. A lever, which is slidably disposed on the hinge cup and is used to abut against the transmission plate, the lever having a first position and a second position on the hinge cup; When the lever is in the first position, the lever is separated from the transmission plate, and the telescopic end of the buffer can be fully reset. When the lever is moved to the second position and the hinge cup is opened, the telescopic end of the buffer is reset and the transmission plate is reset. Until the hinge cup is opened to a certain angle, the transmission plate abuts against the lever. At this time, the reset of the transmission plate is restricted, and the buffer cannot continue to reset.

2. The novel adjustable-stroke buffer hinge according to claim 1, characterized in that, When the lever is moved to the second position and the hinge cup is closed, the transmission plate can be moved, which in turn causes the telescopic end of the buffer to extend and retract until the hinge cup is closed to a certain angle. At this point, the transmission plate abuts against the lever, and then, under the action of the hinge closing force, the transmission plate can be moved past the abutting position so that the hinge cup can continue to close.

3. The novel adjustable-stroke buffer hinge according to claim 2, characterized in that, The paddle block has a first protrusion, and the transmission plate has a second protrusion, wherein: When the lever is moved to the second position and the hinge cup is closed to a certain angle, the second protrusion on the transmission plate can abut against the first protrusion of the lever. Then, under the action of the hinge closing force, the second protrusion can pass over the first protrusion, and the hinge cup can continue to close and drive the telescopic end of the buffer to extend and retract through the transmission plate until the hinge cup is completely closed. When the hinge cup is then reopened, the buffer resets and drives the transmission plate to reset until the hinge cup is opened to a certain angle. At this point, the second protrusion on the transmission plate abuts against the first protrusion again, and the reset of the transmission plate is restricted, preventing the buffer from resetting. The hinge cup then continues to open until it is fully open.

4. The novel adjustable-stroke buffer hinge according to claim 3, characterized in that, The lever is made of plastic.

5. The novel adjustable-stroke buffer hinge according to any one of claims 1-4, characterized in that, It also includes a mounting base installed on the hinge cup, and the buffer and the transmission plate are both disposed in the mounting base; the toggle block is slidably disposed on the mounting base and partially passes through the hinge cup.

6. The novel adjustable-stroke buffer hinge according to claim 5, characterized in that, The lever includes a lever body, and the mounting base is provided with a mounting groove, and the lever body is slidably disposed on the mounting groove. The main body of the lever is provided with a lever part, and the hinge cup is provided with a limiting hole through which the lever part can pass so that the user can lever it; when the lever part is levered to be located at both ends of the limiting hole and restricted by the limiting hole, the lever is in the first position and the second position respectively.

7. The novel adjustable-stroke buffer hinge according to any one of claims 1-4, characterized in that, The drive block is rotatably mounted on the hinge cup; a drive shaft passes through the drive block, and the drive shaft passes through the hinge cup and is connected to the connecting rod assembly for transmission.

8. The novel adjustable-stroke buffer hinge according to claim 7, characterized in that, The linkage assembly includes an upper linkage and a lower linkage. One end of the upper linkage is hinged to the hinge cup, and the other end is hinged to the hinge arm. One end of the lower linkage is hinged to the hinge cup, and the other end is hinged to the hinge arm. The drive shaft passes through the hinge cup and is connected to the upper linkage in a driving manner.

9. The novel adjustable-stroke buffer hinge according to claim 8, characterized in that, It also includes a U-shaped needle, which includes a first pin and a second pin. One end of the upper connecting rod and the driving block are both hinged to the hinge cup through the first pin, and one end of the lower connecting rod is hinged to the hinge cup through the second pin.

10. The novel adjustable-stroke buffer hinge according to claim 8, characterized in that, A torsion spring is also provided at the hinge joint between the upper connecting rod and the hinge arm. A first torsion arm and a second torsion arm extend from both ends of the torsion spring, respectively. The first torsion arm abuts against the inner side of the hinge arm, and the second torsion arm abuts against the lower connecting rod to provide hinge closing force.

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