Buffer hinge with transmission part

Abstract

The invention discloses a buffer hinge with a transmission part, which is characterized in that the transmission part is additionally arranged between a buffer assembly and an outer connecting arm, the original mode of compressing the buffer assembly by means of transmission of a second articulated shaft is changed into the mode of compressing the buffer assembly by means of transmission of the transmission part, and the transmission mode is changed into a labor-saving lever from the original labor-saving lever. The material strength requirements of the second hinge shaft and the outer connecting arm are greatly reduced, and the production cost is effectively reduced on the premise that the quality is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of hinge technology, and specifically relates to a buffer hinge. Background Technology

[0002] As a widely used connector in the furniture industry, soft-close hinges have a wide range of related patented technologies. Most existing soft-close hinges rely on a single hinge axis to directly bear the buffering torque, resulting in a lever that requires considerable effort to bear the torque. This not only weakens the buffering effect but also places higher demands on the materials of the hinge axis and the connecting arm fixed to it.

[0003] Therefore, a new design is needed to transform the way the buffer force is applied into a force-saving lever to avoid problems such as poor buffering effect and high material strength requirements. Summary of the Invention

[0004] The present invention discloses a buffer hinge with a transmission component. By adding the transmission component, the force-consuming lever of the hinge shaft is changed into a force-saving lever, thereby solving the problem of excessive force on the hinge shaft of the buffer hinge.

[0005] To achieve the above objectives, the present invention discloses a buffer hinge, comprising: a hinge cup, an outer connecting arm, an inner connecting arm, a hinge seat, a torsion spring, a buffer assembly, and a transmission component. The hinge cup has a cup cavity. A first end of the outer connecting arm is hinged to the hinge seat via a first hinge axis, and a second end of the outer connecting arm is hinged to the hinge cup via a second hinge axis. A first end of the inner connecting arm is hinged to the hinge seat via a third hinge axis, and a 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, it causes the outer connecting arm to abut against the transmission component and push the transmission component to swing, thereby compressing the buffer assembly.

[0006] As an optional implementation, it also includes an elastic element, which is disposed between the transmission element and the hinge cup. When the buffer hinge pushes the transmission element to swing, the swing of the transmission element stores energy in the elastic element. When the buffer hinge opens, the elastic element releases elastic force to drive the transmission element to remain in contact with the outer connecting arm until the transmission element swings back to its initial position, at which point the outer connecting arm separates from the transmission element.

[0007] As an optional implementation, the transmission component includes an eccentric drive block, two paddles, and an abutment rod. The second hinge shaft passes through the two opposite side walls of the cup cavity. 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 cup cavity, and the two paddles are respectively fixed to the two ends of the abutment rod. 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.

[0008] As an optional implementation, the elastic element includes a second torsion spring, which is sleeved on the second hinge shaft, with one end of the second torsion spring connected to a paddle and the other end of the second torsion spring connected to a hinge cup or a fourth hinge shaft.

[0009] As an alternative implementation, the paddle is provided with a socket, one end of the second torsion spring is inserted into the socket to form a fixed position, and the other end of the second torsion spring elastically abuts against the fourth hinge shaft.

[0010] As an optional implementation, the outer connecting arm is provided with a mating groove. During the closing of the buffer hinge, the mating groove abuts against the abutting rod and drives the abutting rod to close synchronously towards the bottom of the cup cavity. During this process, the paddle and eccentric drive block fixed to the abutting rod move with it. The eccentric drive block presses against the buffer assembly to compress it, thereby completing the buffering action when the buffer hinge closes.

[0011] As an alternative embodiment, the hinged cup includes a cup body, a cup mouth extension surface, and a side shell. The cup cavity is located in the cup body. The cup body and the cup mouth extension surface are integrally formed. The side shell is fixed to one side of the cup body. The buffer assembly and the eccentric drive block are located in the space enclosed by the outer wall of the cup body and the side shell. The buffer assembly includes a damper and a damping cover installed at one end of the damper.

[0012] As an optional implementation, both sides of the cup body are provided with arc-shaped holes, through which the abutment rod passes. The arc-shaped holes are set according to the movement trajectory of the abutment rod, and the arc-shaped holes are used to limit the swing range of the abutment rod.

[0013] As an optional implementation, it also includes a buffer adjustment member, which is movably disposed in the hinge cup. 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.

[0014] As an optional implementation, the hinged cup includes a cup body and a cup mouth extension surface. A cup cavity is disposed in 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 fixed 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 to the swing path of the lever. The driven block abuts against the lever to restrict the transmission component to the compressed position. When the adjustment knob slides to the unlocked position, the distance between the driven block and the outer wall of the cup body allows the lever to swing back and forth.

[0015] As an optional implementation, the end of the driven block is provided with an elastic bending portion. When the buffer adjustment member is in the locked position, the paddle is allowed to push the elastic bending portion to deform and make room during the process of the transmission member swinging from the initial position to the compression position. When the transmission member is in the compression position, the elastic bending portion elastically resets and abuts against the side of the paddle near the cup mouth extension surface to form a lock. 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 connection between the transmission component and the second torsion spring.

[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 8 This 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] 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; 13. Side shell; 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; 7. Transmission component; 71. Eccentric drive block; 72. Paddle; 721. Insertion hole; 73. Abutment rod; 8. Elastic component; 81. Second torsion spring; 9. Buffer adjustment component; 91. Adjustment knob; 92. Driven block; 920. Elastic bending part. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0032] This embodiment provides a buffer hinge, which adds a transmission component 7 between the buffer assembly 6 and the outer connecting arm 2. The original method of using the second hinge shaft 22 to drive the compression through the buffer assembly 6 is changed to using the transmission component 7 to drive the compression through the buffer assembly 6. This change changes the transmission form from the original force-consuming lever to a force-saving lever, which greatly reduces the material strength requirements of the second hinge shaft 22 and the outer connecting arm 2, and effectively reduces production costs while ensuring quality.

[0033] 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, and a transmission component 7. 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.

[0034] See Figure 1The transmission components include an eccentric drive block 71, two levers 72, and an abutment rod 73. The eccentric drive block 71 and the levers 72 adjacent to it are fixedly connected. The two ends of the abutment rod 73 are inserted into the tips of the two levers 72. A second hinge shaft 22 passes through the cup cavity 100, and its two protruding ends are correspondingly hinged to the two levers 72 and the eccentric drive block 71. The hinged cup 1 includes a cup body 11, a cup mouth extension surface 12, and a side shell 13. The various walls of the cup body 11 form the cup cavity 100. The cup mouth extension surface 12 is integrally formed with the cup body 11, and the side shell 13 is fixedly connected to both sides of the cup body 11. Both side walls of the cup body 11 are provided with arc-shaped holes 110, through which the abutment rod 73 passes, and the arc-shaped holes are set according to the swing trajectory of the abutment rod 73.

[0035] During the hinge retraction process, the buffering process begins the instant the mating groove 23 on 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.

[0036] See Figure 2 A second torsion spring 81 is also sleeved on the second hinge shaft 22. The paddle 72 is provided with a socket 721. One torsion arm of the second torsion spring 81 is inserted into the socket 721 and rotates synchronously with the paddle 72. The other torsion arm of the second torsion spring 81 is connected to the hinge cup 1 or the other torsion arm of the second torsion spring 81 is connected to the fourth hinge shaft 32. When the outer connecting arm 2 presses against the abutting rod 73 to drive the paddle 72 and the eccentric drive block 71 to rotate and compress the buffer assembly 6, the rotation of the paddle 72 also drives the second torsion spring 81 to twist and continuously accumulate elastic potential energy. When the abutting rod 73 contacts the bottom wall of the cup body 11, the hinge closing stage is completed. At this time, the buffer assembly 6 is in the state of being compressed to the limit, and the elastic potential energy stored in the second torsion spring 81 reaches its peak. When the hinge opens rapidly, the buffer assembly 6 resets slowly due to its own damping characteristics, and the outer connecting arm 2 disengages from the abutment rod 73. At this moment, without the participation of the second torsion spring 81, the transmission component 7 will be neither pressed by the outer connecting arm 2 nor pushed back by the buffer assembly 6, and will be in a loose state. Therefore, the second torsion spring 81 is introduced to take over the elastic limiting of the transmission component 7. The second torsion spring 81 begins to release the elastic potential energy stored in the closing process of the buffer hinge, and uses the torque generated by the release of elastic potential energy to drive the paddle 72 to rotate away from the bottom wall of the cup body 11. The entire transmission component 7 rotates synchronously with the paddle 72 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 its reset.

[0037] 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.

[0038] During the reset process of the transmission component 7, the damping characteristics of the buffer assembly 6 make it unable to keep up with the overall reset speed of the transmission component 7. Therefore, the second torsion spring 81 provides the power source for the entire reset process of the transmission component 7.

[0039] In practical operation, during normal closing, once the door panel closes past its dead point, the torsion spring 5 automatically drives the door panel to close. The buffering action during the closing process makes the closing process slower and gentler. During this process, when the outer connecting arm 2 begins to compress the abutment rod 73, the transmission component 7 begins to compress the buffer assembly 6. The buffering force of the buffer assembly 6 begins to slow down the closing action driven by the torsion spring 5, but the buffering force is less than the closing torque of the torsion spring 5. Therefore, it does not affect the automatic closing and makes the latter part of the closing action gentler, effectively reducing the impact of the door panel on the door frame at the moment of closing.

[0040] When the door is opened quickly while closed, the previously compressed buffer component 6 instantly loses the pressure from the transmission component 7, and begins to relax and reset. However, due to its own damping characteristics, the relaxation and reset process of the buffer component 6 is delayed. This delay manifests in the practical experience of opening and closing the door quickly while closed, as the second closing process lacks a buffering effect. Therefore, to address this specific operating condition, a second torsion spring 81 is introduced to fill the buffering gap during the delayed reset phase of the buffer component 6.

[0041] The second torsion spring 81 can make up for the above-mentioned problem of the phased buffer gap, but its function is not limited to this. The second torsion spring 81 can also enhance the buffering effect. Regardless of the working condition, regardless of whether the buffer component 6 is in the buffering lag stage, when the hinge passes the dead point and enters the buffer angle, the second torsion spring 81 is compressed. The process of the second torsion spring 81 being compressed is also the process of the buffer component 6 being compressed. Therefore, during the hinge closing stage, the second torsion spring 81 and the buffer component 6 jointly bear the force against the hinge closing, thus enhancing the buffering effect.

[0042] See Figures 4 to 8A buffer adjustment component 9 is also provided on one side of the buffer hinge. The buffer adjustment component 9 includes an integrally formed adjustment knob 91 and a driven block 92. An adjustment window 121 is provided on the cup mouth extension surface 12. The adjustment knob 91 passes through the adjustment window 121 and can slide in the adjustment window 121 to change the position of the buffer adjustment component 9, so that the buffer adjustment component 9 is in the locked position or the unlocked position. As the adjustment knob 91 slides, the driven block 92 can move to the swing path of the paddle 72 or leave the swing path of the paddle 72. Specifically, when the adjusting knob 91 is slid to the locked position, the driven block 92 will also move onto the swing path of the lever 72 as the adjusting knob 91 slides. At this time, the driven block 92 abuts against the lever 72 to restrict the transmission component 7 to the compressed position, thus locking the transmission component 7. When the adjusting knob 91 is slid to the unlocked position, the driven block 92 will leave the swing path of the lever 72 as the adjusting knob 91 slides, so that a sufficient gap is formed between the driven block 92 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.

[0043] Preferably, the driven block 92 has an elastic bending portion 920 at its end. The elastic bending portion 920 is located on the swing path of the paddle 72. The elastic bending portion 920 can only be deformed by the unidirectional pushing of the paddle 72 from top to bottom. When the buffer adjustment member 9 is in the locked position, the paddle 72 is allowed to push the elastic bending portion 920 to deform and make room during the swing of the transmission member 7 from the initial position to the compression position. When the transmission member 7 is in the compression position, the elastic bending portion 920 elastically resets and abuts against the side of the paddle 72 near the cup mouth extension surface 12 to form a lock.

[0044] Based on the above scheme, when the buffer adjustment component 9 is in the locked position, the buffer adjustment component 9 is close to the cup body 11, and there is a phase between the buffer adjustment component 9 and the transmission component 7: the first phase is as follows Figure 4 As shown, the elastic bending part 920 is tightly attached to the outer wall of the cup body 11. When the hinge is in the extended state, the abutment rod 73 is abutted and limited by the inner upper wall of the arc-shaped hole 110. The paddle 72 is in the gap between the outer wall of the cup body 11 and the buffer adjustment member 9. When the hinge begins to close, the transmission member 7, driven by the outer connecting arm 2, rotates around the second hinge axis 22 towards the bottom wall of the cup body 11. Because the bending of the elastic bending part 920 is angled downwards towards the connection between the bottom wall and the side wall of the cup body 11, the paddle 72 can use the elastic bending slope of the elastic bending part 920 as a guide slope to gradually push open the elastic bending part 920 during the rotation of the transmission member 7 from top to bottom. The second stage is as follows: Figure 5 As shown, the lever 72 lifts the elastically bent portion 920, causing the elastically bent portion 920 to detach from the side wall of the cup body 11 and elastically press against the outer side wall of the lever 72; the transmission component 7 continues to rotate downwards, and the third stage is as follows. Figure 6 As shown, the paddle 72 is completely disengaged from the elastic bending portion 920; the fourth stage is as follows: Figure 7 As shown, when the transmission component 7 is reset, it is blocked by the elastic bending portion 920 that is close to the outer wall of the cup body 11. Moreover, the bending angle of the elastic bending portion 920 cannot provide a sloped guide for the paddle 72 to swing from bottom to top. Therefore, the reset action of the transmission component 7 is locked.

[0045] See Figure 8 When the buffer adjustment member 9 is in the unlocked position, the transmission member 7 does not contact the buffer adjustment member 9 regardless of its position. The buffer adjustment member 9 cannot limit the transmission member 7, meaning that the buffer adjustment member 9 is in the unlocked position relative to the transmission member 7.

[0046] It should be noted that when the buffer adjustment element 9 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 easily adjust the adjustment knob 91 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 9 while the door is closed. When the buffer adjustment element 9 is in the unlocked position, it is not necessary to operate the adjustment knob 91 while the buffer hinge is closed, therefore, the delayed activation setting is unnecessary.

[0047] It should be noted that in other preferred embodiments, the elastic bending portion 920 can be omitted from the driven block 92 according to design requirements. In this case, the buffer adjustment member 9 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 can be used to realize the function of delayed activation of the buffer adjustment member 9, which will not be described in detail here.

[0048] 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, characterized in that, include: The components include 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), and a transmission component (7). 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 third hinge shaft. (31) Hinged to the hinge seat (4), the second end of the inner connecting arm (3) is hinged to the hinge cup (1) via the fourth hinge shaft (32), and the second end of the inner connecting arm (3) and the second end of the outer connecting arm (2) are both located in 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); wherein, 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).

2. The buffer hinge according to claim 1, characterized in that, It also includes an elastic element (8), which is disposed between the transmission element (7) and the hinge cup (1). When the buffer hinge pushes the transmission element (7) to swing, the swing of the transmission element (7) stores energy in the elastic element (8). When the buffer hinge opens, the elastic element (8) releases elastic force to drive the transmission element (7) to remain in contact with the outer connecting arm (2) until the transmission element (7) swings back to its initial position, and then the outer connecting arm (2) separates from the transmission element.

3. The buffer hinge according to claim 2, characterized in that, The transmission component (7) includes an eccentric drive block (71), two paddles (72), and an abutment rod (73). 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 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).

4. The buffer hinge according to claim 3, characterized in that, The elastic element (8) includes a second torsion spring (81), which is sleeved on the second hinge shaft (22). One end of the second torsion spring (81) is connected to the paddle (72), and the other end of the second torsion spring (81) is connected to the hinge cup (1) or the fourth hinge shaft (32).

5. The buffer hinge according to claim 4, characterized in that, The paddle is provided with a socket (721), one end of the second torsion spring (81) is inserted into the socket (721) to form a fixed position, and the other end of the second torsion spring (81) elastically abuts against the fourth hinge shaft (32).

6. The buffer hinge according to claim 3, characterized in that, The outer connecting arm (2) is provided with a mating groove (23). During the closing process of the buffer hinge, the mating groove (23) abuts against the abutting rod (73) and drives the abutting rod (73) to close synchronously towards the bottom of the cup cavity (100). During this process, the paddle (72) and the eccentric drive block (71) fixed to the abutting rod (73) move with it. The eccentric drive block (71) presses against the buffer assembly (6) to compress it, thereby completing the buffering action when the buffer hinge closes.

7. The buffer hinge according to claim 6, characterized in that, The hinged cup includes a cup body (11), a cup mouth extension surface (12), and a side shell (13). 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. The side shell (13) is fixed to one side of the cup body (11). The buffer assembly (6) and the eccentric drive block (71) are disposed in the space enclosed by the outer side wall of the cup body (11) and the side shell (13). The buffer assembly (6) includes a damper and a damping cover disposed at one end of the damper.

8. The buffer hinge according to claim 7, characterized in that, Both sides of the cup body (11) are provided with arc-shaped holes (110), and the two arc-shaped holes (110) are for the abutment rod (73) to pass through. The arc-shaped holes (110) are set according to the movement trajectory of the abutment rod (73), and the arc-shaped holes (110) are used to limit the swing range of the abutment rod (73).

9. The buffer hinge according to any one of claims 3-8, characterized in that, It also includes a buffer adjustment member (9) movably disposed on the hinge cup (1), the transmission member (7) having an initial position and a compressed position where the buffer assembly (6) is compressed by the outer connecting arm (2); the buffer adjustment member (9) 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).

10. The buffer hinge according to claim 9, 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 (9) includes an adjustment knob (91) and a driven block (92). The adjustment knob (91) is fixed to the driven block (92). The adjustment knob (91) passes through and... Sliding on the adjustment window (121), when the adjustment knob (91) is slid to the locked position, the driven block (92) moves to the swing path of the lever (72), and the driven block (92) abuts against the lever (72) to restrict the transmission member (7) in the compressed position; when the adjustment knob (91) is slid to the unlocked position, the distance between the driven block (92) and the outer wall of the cup body (11) allows the lever (72) to swing back and forth.

11. The buffer hinge according to claim 10, characterized in that, The driven block (92) has an elastic bending portion (920) at its end. When the buffer adjustment member (9) is in the locked position, the paddle (72) is allowed to push the elastic bending portion (920) to deform and make room during the swing of the transmission member (7) from the initial position to the compression position. When the transmission member (7) is in the compression position, the elastic bending portion (920) elastically resets and abuts against the side of the paddle (72) near the cup mouth extension surface (12) to form a lock.

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