A buffer hinge with adjustable buffer function

Abstract

The utility model discloses a buffering hinge with adjustable opening and closing buffering function, buffering adjusting parts are added in the buffering hinge, the abutment and separation of buffering adjusting parts and transmission parts are controlled, the transmission parts are locked and unlocked to buffering assembly, and thus the buffering function opening and closing adjustable of buffering hinge is realized.

Description

Technical Field

[0001] This utility model belongs to the field of hinges, specifically relating to a buffer hinge with adjustable buffer function. Background Technology

[0002] As a widely used connector in the furniture industry, soft-close hinges have a large number of related patented technologies. However, most existing soft-close hinges do not have an adjustable soft-close function, limiting the use to ordinary soft-close hinges or hinges without a soft-close function, which fails to meet the technical requirements when usage scenarios change.

[0003] Therefore, a new design is needed to make the buffering function of the buffer hinge adjustable to meet the usage requirements under complex changing scenarios. Utility Model Content

[0004] The purpose of this invention is to disclose a buffer hinge that, by adding a buffer adjustment component, enables the opening and closing adjustment of the hinge's buffering function.

[0005] To achieve the above objectives, this utility model discloses a buffer hinge with adjustable buffer function, comprising: a hinge cup, an outer connecting arm, an inner connecting arm, a hinge seat, a torsion spring, a buffer assembly, a transmission component, and a buffer adjustment component. The hinge cup has a cup cavity. The first end of the outer connecting arm is hinged to the hinge seat via a first hinge axis, and the second end of the outer connecting arm is hinged to the hinge cup via a second hinge axis. The first end of the inner connecting arm is hinged to the hinge seat via a third hinge axis, and the second end of the inner connecting arm is hinged to the hinge cup via a fourth hinge axis. Both the second ends of the inner and outer connecting arms are located within the cup cavity. The torsion spring is disposed between the outer connecting arm and the hinge seat, or between the inner connecting arm and the hinge seat. The buffer assembly is located outside the cup cavity, and the transmission component is connected to the second hinge shaft. The transmission component is used to abut against the outer connecting arm and to abut against the buffer assembly. When the buffer hinge closes, the outer connecting arm abuts against the transmission component and pushes the transmission component to swing, causing the transmission component to compress the buffer assembly. The buffer adjustment component is located in the hinge cup. The buffer adjustment component is engaged with or displaced by the transmission component, and the buffer assembly is locked and unlocked through the transmission component.

[0006] As an optional implementation, the buffer adjustment member is movably disposed in the hinge cup, and the transmission member has an initial position and a compressed position in which the buffer assembly is compressed by the push of the external connecting arm; the buffer adjustment member has at least a locked position that restricts the transmission member to remain in the compressed position and an unlocked position that releases the restriction on the swing of the transmission member.

[0007] As an optional implementation, the hinged cup includes a cup body and a cup mouth extension surface, with a cup cavity disposed within the cup body. The cup body and the cup mouth extension surface are integrally formed. An adjustment window is provided on the cup mouth extension surface. The buffer adjustment component includes an adjustment knob and a driven block. The adjustment knob is fixedly connected to the driven block and passes through and slides in the adjustment window. When the adjustment knob slides to the locked position, the driven block moves accordingly to the swing path of the transmission component and abuts against the transmission component to restrict the transmission component to the compressed position. When the adjustment knob slides to the unlocked position, the driven block moves accordingly to outside the swing path of the transmission component, releasing the interference with the reciprocating swing of the transmission component.

[0008] As an optional implementation, multiple grooves are provided on both sides of the adjustment window, and the multiple grooves are arranged sequentially along the sliding direction of the adjustment knob. At least one protrusion is provided on both sides of the adjustment knob. When the adjustment knob is slid to the locked position or the unlocked position, the protrusion engages with different grooves to restrict the adjustment knob.

[0009] As an optional implementation, the driven block has a guide bend at its end and an elastic waist section in its middle section. The bending direction of the guide bend is toward the connection between the side wall and the bottom wall of the hinge cup. The elastic waist section and the guide bend are integrally formed.

[0010] As an optional implementation, the transmission component includes an eccentric drive block, two paddles, and an abutment rod. The two paddles are respectively disposed on both sides of the cup body, and the abutment rod passes through the cup body and through the two paddles. The eccentric drive block is fixed to the paddles and abuts against the buffer assembly. When the buffer adjustment component is in the locked position, the gap between the guide bend and the hinge cup sidewall is less than the thickness of the paddle, but the gap between the elastic waist section and the hinge cup sidewall is greater than the thickness of the paddle. The paddle swings between the gap between the elastic waist section and the hinge cup sidewall. The guide bend has an inclined guide surface on the side facing the hinge cup sidewall. When the paddle swings and pushes against the inclined guide surface, it drives the driven block to move out of position. When the buffer adjustment component is in the unlocked position, the gap between the guide bend and the hinge cup sidewall is greater than the thickness of the paddle, so as to release the restriction on the paddle.

[0011] As an optional implementation, the paddle is provided with a boosting ramp and a locking groove. When the buffer adjustment member is in the locked position, when the transmission member pushes the guide bend in the direction away from the cup mouth extension surface, the guide bend slides and engages with the boosting ramp to lift the guide bend. When the transmission member swings in the direction closer to the cup mouth extension surface, the guide bend engages with the locking groove.

[0012] As an optional implementation, the second hinge shaft passes through the two opposite side walls of the cup cavity, and the two paddles are respectively connected to the two ends of the second hinge shaft extending out of the side wall of the cup cavity. The abutment rod passes through the two side walls of the cup cavity, and the two ends of the abutment rod are respectively fixed to the two paddles. The eccentric drive block is fixed to one of the paddles. The abutment rod is used to abut against the outer connecting arm, and the eccentric drive block is used to abut against the buffer assembly.

[0013] As an optional implementation, the buffer assembly includes a damper and a damping cover disposed at one end of the damper, wherein the damper drives the damping cover to elastically abut against the eccentric drive block.

[0014] As an optional implementation, both sides of the cup body are provided with arc-shaped holes for the abutment rod to pass through. The arc-shaped holes are set according to the movement trajectory of the abutment rod, and the arc-shaped holes limit the swing range of the abutment rod.

[0015] Compared with the prior art, the buffer hinge disclosed in this utility model can flexibly adjust the opening and closing of the hinge buffer function according to different usage scenarios to adapt to different technical requirements. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the exploded structure of a hinge.

[0018] Figure 2 This is a schematic diagram of the transmission component.

[0019] Figure 3 This is a separate display image of the buffer adjustment component.

[0020] Figure 4 This is a diagram showing the first state of the buffer adjustment component in the locked position, cooperating with the transmission component.

[0021] Figure 5 This is a diagram showing the second state of the buffer adjustment component in cooperation with the transmission component when it is in the locked position.

[0022] Figure 6 This is a diagram showing the third state of the buffer adjustment component in the locked position, cooperating with the transmission component.

[0023] Figure 7 This is a diagram showing the fourth state of the buffer adjustment component in the locked position, cooperating with the transmission component.

[0024] Figure 8This is a diagram showing the interaction between the buffer adjustment component and the transmission component when the buffer adjustment component is in the unlocked position.

[0025] Figure 9 This is a detailed illustration of the interaction between the buffer adjustment component and the adjustment window.

[0026] Explanation of key figure labels: 1. Hinge cup; 100. Cup cavity; 11. Cup body; 110. Arc-shaped hole; 12. Cup mouth extension surface; 121. Adjustment window; 2. Outer connecting arm; 21. First hinge shaft; 22. Second hinge shaft; 23. Mating groove; 3. Inner connecting arm; 31. Third hinge shaft; 32. Fourth hinge shaft; 4. Hinge seat; 5. Torsion spring; 6. Buffer assembly; 61. Damper; 62. Damping cover; 7. Transmission component; 71. Eccentric drive block; 72. Paddle; 721. Boosting ramp; 722. Locking groove; 73. Abutment rod; 8. Buffer adjustment component; 81. Adjustment knob; 82. Driven block; 820. Guide bend; 821. Elastic waist section. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0029] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0030] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0031] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0032] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0033] This utility model discloses an adjustable buffer hinge. By adding a buffer adjustment component to the buffer hinge, the transmission component can lock and unlock the buffer assembly by controlling the contact and separation between the buffer adjustment component and the transmission component, thereby realizing the adjustable buffer function of the buffer hinge.

[0034] See Figures 1 to 3The buffer hinge disclosed in this embodiment includes: a hinge cup 1, an outer connecting arm 2, an inner connecting arm 3, a hinge seat 4, a torsion spring 5, a buffer assembly 6, a transmission component 7, and a buffer adjustment component 8. The hinge cup 1 has a cup cavity 100. The two ends of the outer connecting arm 2 are respectively hinged to the hinge cup 1 and the hinge seat 4. Specifically, the first end of the outer connecting arm 2 is provided with a first hinge shaft 21, and the hinge seat 4 and the outer connecting arm 2 are hinged together via the first hinge shaft 21. The second end of the outer connecting arm 2 is provided with a second hinge shaft 22, and the hinge cup 1 and the second hinge shaft 22 are hinged together. The second end of the outer connecting arm 2 is located within the cup cavity 100 of the hinge cup 1. When closed, the inner connecting arm... Both the inner connecting arm 3 and the outer connecting arm 2 can be retracted into the cup cavity 100. The two ends of the inner connecting arm 3 are respectively hinged to the hinge cup 1 and the hinge seat 4. Specifically, the first end of the inner connecting arm 3 is provided with a third hinge shaft 31, and the hinge seat 4 and the inner connecting arm 3 are hinged together by the third hinge shaft 31. The second end of the inner connecting arm 3 is provided with a fourth hinge shaft 32, and the hinge cup 1 and the inner connecting arm 3 are hinged together by the fourth hinge shaft 32. The second end of the inner connecting arm 3 is located inside the cup cavity 100 of the hinge cup 1. There are no specific requirements or limitations on the objects to which the third hinge shaft 31, the fourth hinge shaft 32, and the first hinge shaft 21 are fixed during installation. They only need to satisfy the function of allowing the inner connecting arm 3 to rotate relative to the hinge cup 1 and the hinge seat 4, and to satisfy the function of allowing the outer connecting arm 2 to rotate relative to the hinge seat 4. A torsion spring 5 is located between the outer connecting arm 2 and the hinge seat 4. Specifically, the torsion spring 5 is sleeved on the first hinge shaft 21, with one end of the torsion spring 5 abutting against the outer connecting arm 2 and the other end abutting against the hinge seat 4. It is understood that the torsion spring 5 can also be located between the inner connecting arm 3 and the hinge seat 4. Specifically, the torsion spring 5 can be sleeved on the third hinge shaft, with one end of the torsion spring 5 abutting against the inner connecting arm 3 and the other end abutting against the hinge seat 4. This is sufficient to ensure that the torsion spring 5 can provide elastic torque. A buffer assembly 6 is located outside the cup cavity 100. A transmission member 7 is connected to the second hinge shaft 22, and the transmission member 7 abuts against the outer connecting arm 2, and consequently against the buffer assembly 6. Specifically, when the buffer hinge is closed, the outer connecting arm 2 abuts against the transmission member 7, forcing the transmission member 7 to swing and compress the buffer assembly 6 to complete the buffering; when the buffer hinge is open, the buffer assembly 6 resets and drives the transmission member 7 back to its initial position. The buffer adjustment component 8 can be engaged with or displaced by the transmission component 7, and the buffer function of the buffer assembly 6 can be indirectly controlled by locking or unlocking the transmission component 7.

[0035] See Figure 1The hinged cup 1 includes a cup body 11 and a cup mouth extension surface 12. The various walls of the cup body 11 form a cup cavity 100, and the cup mouth extension surface 12 is integrally formed with the cup body 11. Arc-shaped holes 110 are provided on both side walls of the cup body 11. Abutment rod 73 passes through the arc-shaped holes 110, and the arc-shaped holes are arranged according to the swing trajectory of the abutment rod 73. The transmission component includes an eccentric drive block 71, two levers 72, and an abutment rod 73. The two ends of the abutment rod 73 are inserted into the tips of the two levers 72. After the second hinge shaft 22 passes through the cup cavity 100, the two protruding ends are correspondingly hinged to the two levers 72 and the eccentric drive block 71. The eccentric drive block 71 is fixed to one of the levers. Specifically, the eccentric drive block 71 is fixed to the lever 72 on the side of the hinged cup 1 with the buffer assembly 6, and the eccentric drive block 71 abuts against the buffer assembly 6.

[0036] During the hinge closing process, the buffering process begins the instant the outer connecting arm 2 contacts and engages with the abutment rod 73. The outer connecting arm 2 presses against the abutment rod 73, and the abutment rod 73 drives the entire transmission component 7 to rotate around the second hinge axis 22. The eccentric drive block 71 rotates accordingly and compresses the buffer assembly 6 to achieve hinge buffering.

[0037] During the hinge opening process, the pressure of the outer connecting arm 2 on the abutment rod 73 gradually decreases, and the buffer component 6 gradually expands to push the eccentric drive block 71 to reset, and indirectly drives the entire transmission component 7 to reset, until the abutment rod 73 is blocked by the hole wall of the arc-shaped hole 110 and forced to stop swinging. At this time, the transmission component 7 completes the reset.

[0038] It should be noted that the arc-shaped hole 110 indirectly controls the initial position of the transmission component 7 by limiting the swing range of the abutment rod 73. Its significance is that by using the limiting effect of the arc-shaped hole 110, the outer connecting arm 2 and the abutment rod 73 can be separated or contacted at the initial position during the opening and closing process. That is, by using the limiting effect of the arc-shaped hole 110, the buffer component 6 only starts to play a buffering role at the preset opening and closing angle.

[0039] See Figures 4 to 8A buffer adjustment element 8 is also provided on one side of the buffer hinge. The buffer adjustment element 8 abuts or yields to the transmission element 7, and locks and unlocks the buffer assembly 6 through the transmission element 7. Preferably, the buffer adjustment element 8 includes an integrally formed adjustment knob 81 and a driven block 82. An adjustment window 121 is provided on the cup mouth extension surface. The adjustment knob 81 passes through the adjustment window 121 and can slide in the adjustment window 121 to change the position of the buffer adjustment element 8, so that the buffer adjustment element 8 is in a locked position or an unlocked position. When the buffer adjustment element 8 is in the locked position, it can restrict the transmission element 7 to remain in the compressed position. When the buffer adjustment element 8 is in the unlocked position, it can release the swing restriction on the transmission element 7, thereby allowing the transmission element 7 to swing between the initial position and the compressed position. With the sliding of the adjustment knob 81, the driven block 82 can move onto the swing path of the paddle 72 or leave the swing path of the paddle 72. Specifically, when the adjusting knob 81 is slid to the locked position, the driven block 82 will also move onto the swing path of the lever 72 as the adjusting knob 81 slides. At this time, the driven block 82 and the lever 72 abut against each other to restrict the transmission component 7 to the compressed position, thus locking the transmission component 7. When the adjusting knob 81 is slid to the unlocked position, the driven block 82 will leave the swing path of the lever 72 as the adjusting knob 81 slides, so that a sufficient gap is formed between the driven block 82 and the outer wall of the cup body 11. This gap allows the lever 72 to swing back and forth, thus releasing the lock on the transmission component 7.

[0040] Preferably, the driven block 82 has a guide bend 820 at its end, the driven block 821 has an elastic waist section 821 in its middle section, the paddle 72 has a push-assist slope 721 on the side away from the cup mouth extension surface 12, and the paddle 72 has a locking groove 722 on the side close to the cup mouth extension surface 12.

[0041] When the buffer adjustment element 8 is in the locked position, the paddle 72 is allowed to rotate from the reset position to the compressed position, but cannot rotate from the compressed position to the reset position. Specifically, when the buffer adjustment member 8 is in the locked position, during the process of the paddle 71 rotating from the reset position to the compression position, in the first stage, the boosting inclined surface 721 first abuts against the guide bending part 820; in the second stage, under the abutting cooperation of the boosting inclined surface 721 and the guide bending part 820, the elastic waist part 821 undergoes elastic deformation, and the end of the driven block 8 is lifted by the paddle 72; in the third stage, when the paddle 72 disengages from the elastic abutment of the guide bending part 820, the elastic waist part 821 elastically resets to the swing path of the paddle 72; in the fourth stage, when the paddle 72 begins to reset after rotating to the limit compression position, the guide bending part 820 engages with the locking groove 722 to lock the paddle 72 in this position. At this time, the buffer adjustment member 8 indirectly locks the buffer assembly 6 in the compression position by locking the paddle 72, thereby closing the buffer function of the buffer hinge.

[0042] When the buffer adjustment member 8 is in the unlocked position, the distance between the buffer adjustment member 8 and the side wall of the cup body 11 is greater than the thickness of the paddle 72. At this time, the buffer adjustment member 8 cannot contact the paddle 72 during the entire swing stroke of the transmission member 7, so it cannot restrict the movement of the transmission member 7, that is, it cannot lock the buffer assembly 6 in the compressed position and realize the buffer function of the buffer hinge.

[0043] It should be noted that the buffer assembly 6 includes a damper 61 and a damping cover 62 covering one end of the damper 61. The damper 61 drives the damping cover 62 to elastically abut against the eccentric drive 71 block. That is, regardless of whether the buffer function of the buffer hinge is closed or open, the damper 61 relies on its own elastic restoring force to always elastically push against the damping cover 62, and make the damping cover 62 elastically abut against the eccentric drive 71 block.

[0044] See Figure 9 Multiple grooves are provided on both sides of the adjustment window 121, and these grooves are arranged sequentially along the sliding direction of the adjustment knob 81. Correspondingly, at least one protrusion is provided on each side of the adjustment knob 81. When the adjustment knob 81 slides to the locked or unlocked position, the protrusion engages with different grooves. This engagement ensures the stability of the buffer adjustment member 8 in the current position. When the lever 72 pushes the buffer adjustment member 8, the adjustment knob 81 will not slip within the limiting window 121. This engagement is only one way to stabilize the buffer adjustment member 8 as described in this embodiment. Of course, other methods can also be used, but they will not be elaborated on in this embodiment.

[0045] It should be noted that when the buffer adjustment element 8 is in the locked position, it does not immediately lock the buffer assembly 6 in the compressed position. Instead, it automatically takes effect after a door closing action. This design allows the user to adjust the adjustment knob 81 to the locked position while the door is open. Without this delayed activation setting, it would be difficult for the user to operate the buffer adjustment element 8 while the door is closed. When the buffer adjustment element 8 is in the unlocked position, it is not necessary to operate the adjustment knob 81 while the buffer hinge is closed, therefore, the delayed activation setting is unnecessary.

[0046] It should be noted that in other preferred embodiments, the guide bend 820 may be omitted from the driven block 82 according to design requirements. In this case, the buffer adjustment member 8 will not have the function of delayed activation. During the use of the buffer hinge, the activation and deactivation of the buffer function need to be adjusted in advance. Alternatively, other methods may be used to achieve the function of delayed activation of the buffer adjustment member 8, which will not be described in detail here.

[0047] The technical means disclosed in this invention 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 principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A buffer hinge with adjustable buffer function, characterized in that, include: The hinge cup (1), outer connecting arm (2), inner connecting arm (3), hinge seat (4), torsion spring (5), buffer assembly (6), transmission component (7), and buffer adjustment component (8) are provided. The hinge cup (1) has a cup cavity (100). The first end of the outer connecting arm (2) is hinged to the hinge seat (4) via a first hinge shaft (21). The second end of the outer connecting arm (2) is hinged to the hinge cup (1) via a second hinge shaft (22). The first end of the inner connecting arm (3) is hinged to the hinge seat (4) via a first hinge shaft (21). The third hinge shaft (31) is hinged to the hinge seat (4), and the second end of the inner connecting arm (3) is hinged to the hinge cup (1) via the fourth hinge shaft (32). Both the second end of the inner connecting arm (3) and the second end of the outer connecting arm (2) are located within the cup cavity (100). The torsion spring (5) is disposed between the outer connecting arm (2) and the hinge seat (4), or the torsion spring (5) is disposed between the inner connecting arm (3) and the hinge seat (4). The buffer assembly (6) is disposed outside the cup cavity (100), the transmission member (7) is connected to the second hinge shaft (22), and the transmission member (7) is used to abut against the outer connecting arm (2) and to abut against the buffer assembly (6); When the buffer hinge is closed, the outer connecting arm (2) abuts against the transmission member (7) and pushes the transmission member (7) to swing, so that the transmission member (7) compresses the buffer assembly (6); The buffer adjustment member (8) is located on the hinge cup (1). The buffer adjustment member (8) is engaged with or displaced by the transmission member (7), and the buffer assembly (6) is locked and unlocked by the transmission member (7).

2. The buffer hinge with adjustable buffer function according to claim 1, characterized in that, The buffer adjustment member (8) is movably disposed on the hinge cup (1), the transmission member (7) has an initial position and a compressed position where the buffer assembly (6) is compressed by the outer connecting arm (2); the buffer adjustment member (8) has at least a locked position that restricts the transmission member (7) from being held in the compressed position and an unlocked position that releases the restriction on the swing of the transmission member (7).

3. The buffer hinge with adjustable buffer function according to claim 2, characterized in that, The hinged cup (1) includes a cup body (11) and a cup mouth extension surface (12). The cup cavity (100) is disposed in the cup body (11). The cup body (11) and the cup mouth extension surface (12) are integrally formed. An adjustment window (121) is provided on the cup mouth extension surface (12). The buffer adjustment member (8) includes an adjustment knob (81) and a driven block (82). The adjustment knob (81) is fixed to the driven block (82). The adjustment knob (81) passes through and... Sliding on the adjustment window (121), when the adjustment knob (81) is slid to the locked position, the driven block (82) moves to the swing path of the transmission member (7) and abuts against the transmission member (7) to restrict the transmission member (7) to the compressed position; when the adjustment knob (81) is slid to the unlock position, the driven block (82) moves to the outside of the swing path of the transmission member (7) to release the interference on the reciprocating swing of the transmission member (7).

4. The buffer hinge with adjustable buffer function according to claim 3, characterized in that, The adjustment window (121) has multiple grooves on its two side walls. The multiple grooves are arranged sequentially along the sliding direction of the adjustment knob (81). The adjustment knob (81) has at least one protrusion on its two side walls. When the adjustment knob (81) slides to the locked or unlocked position, the protrusion engages with different grooves to restrict the adjustment knob (81).

5. The buffer hinge with adjustable buffer function according to claim 3, characterized in that, The driven block (82) has a guide bending part (820) at its end and an elastic waist part (821) in its middle section. The bending direction of the guide bending part (820) is toward the connection between the side wall and the bottom wall of the hinge cup (1). The elastic waist part (821) and the guide bending part (820) are integrally formed.

6. The buffer hinge with adjustable buffer function according to claim 5, characterized in that, The transmission component (7) includes an eccentric drive block (71), two paddles (72), and an abutment rod (73). The two paddles (72) are respectively disposed on both sides of the cup body (11). The abutment rod (73) passes through the cup body (11) and through the two paddles (72). The eccentric drive block (71) is fixed to the paddles (72), and the eccentric drive block (71) abuts against the buffer assembly (6). When the buffer adjustment component (8) is in the locked position, the gap between the guide bend (820) and the side wall of the hinge cup (1) is smaller than the thickness of the paddle (72), but the elastic waist section (821) and the hinge cup are still connected. (1) The gap between the side walls is greater than the thickness of the lever (72). The lever (72) swings between the elastic waist section (821) and the side wall of the hinge cup (1). The guide bend (820) is provided with an inclined guide surface on the side facing the side wall of the hinge cup (1). When the lever (72) swings against the inclined guide surface, it drives the driven block (82) to give way. When the buffer adjustment member (8) is in the unlocked position, the gap between the guide bend (820) and the side wall of the hinge cup (1) is greater than the thickness of the lever (72) to release the restriction on the lever (72).

7. The buffer hinge with adjustable buffer function according to claim 6, characterized in that, The paddle (72) is provided with a push-in inclined surface (721) and a locking groove (722). When the buffer adjustment member (8) is in the locked position, when the transmission member (7) pushes the guide bend (820) away from the cup mouth extension surface (12), the guide bend (820) slides and engages with the push-in inclined surface (721) to lift the guide bend (820); when the transmission member (7) swings towards the cup mouth extension surface (12), the guide bend (820) engages with the locking groove (722).

8. The buffer hinge with adjustable buffer function according to any one of claims 6 to 7, characterized in that, The second hinge shaft (22) passes through the two opposite side walls of the cup cavity (100). The two paddles (72) are respectively connected to the two ends of the second hinge shaft (22) extending out of the side wall of the cup cavity (100). The abutment rod (73) passes through the two side walls of the cup cavity (100). The two ends of the abutment rod (73) are respectively fixed to the two paddles (72). The eccentric drive block (71) is fixed to one of the paddles (72). The abutment rod (73) is used to abut against the outer connecting arm (2). The eccentric drive block (71) is used to abut against the buffer assembly (6).

9. The buffer hinge with adjustable buffer function according to claim 8, characterized in that, The buffer assembly (6) includes a damper (61) and a damping cover (62) covering one end of the damper (61). The damper (61) drives the damping cover (62) to elastically abut against the eccentric drive block (71).

10. The buffer hinge with adjustable buffer function according to claim 9, characterized in that, Both sides of the cup body (11) are provided with arc-shaped holes (110), through which the abutment rod (73) passes. The arc-shaped holes (110) are set according to the movement trajectory of the abutment rod (73), and the arc-shaped holes (110) limit the swing range of the abutment rod (73).

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