Buffering hinge

Abstract

The utility model discloses a buffering hinge which comprises a hinge cup and a hinge arm, and a rocker arm assembly is arranged between the hinge cup and the hinge arm to achieve hinge opening and closing. The buffer assembly comprises a buffer arranged at the hinge cup and located outside the groove and a driving support rotationally arranged on the hinge cup and in transmission fit with the buffer; when the hinge cup is driven to be closed, the driving support can be synchronously driven to be closed until the driving support abuts against the hinge arm, and under the action of hinge closing force, the hinge arm drives the driving support to rotate relative to the hinge cup and drives the buffer to act so as to buffer the hinge cup. According to the buffering hinge, due to the fact that the abutting portion of the driving support abuts against the upper end of the hinge arm and is located outside the hinge cup groove, the abutting portion does not occupy the depth space of the hinge cup groove, the depth of the hinge cup groove does not need to be increased, the thickness of the hinge cup can be thinned, then the hinge cup can be assembled on a thin door plate, and universality is higher.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically to a buffer 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, existing buffer hinges typically place the buffer device inside the hinge cup or hinge arm. While this design can achieve a certain length of buffering, it still has the following drawbacks: First, due to the limited internal space of the hinge cup and hinge arm, placing the buffer device inside will occupy the installation space of other components, making the hinge structure more complex and costly. Second, the limited internal space also restricts the size of the buffer; a smaller buffer cannot provide sufficient buffering force, making it difficult to achieve the expected buffering effect. Finally, due to the limited internal space, all components within the hinge need to be precision manufactured, which increases production costs.

[0005] To address this, some manufacturers place the damper on the outside of the hinge cup or hinge arm, effectively utilizing external space and avoiding the problem of limited internal space. Patent application number 202411939631.X discloses an external damper hardware hinge, comprising a hinge cup and a hinge arm, which are hinged together by an upper connecting rod and a lower connecting rod. The bottom of the hinge cup has a guide groove extending through the body and along its bottom. A drive plate is mounted on the outer bottom of the hinge cup, and a slider is mounted on the top of the drive plate, sliding within the guide groove. A drive arm extends outward from the end of the upper connecting rod facing the hinge cup; when the hinge is closed, the drive arm acts on the slider, pushing it to slide within the guide groove. A damper is mounted on the outer bottom of the hinge cup, with its piston rod or cylinder connected to the drive plate. The damper dampens the movement of the drive plate, thus achieving a damping effect when the hinge is closed.

[0006] Therefore, although the above-mentioned buffer hinge effectively utilizes external space and avoids the problem of limited internal space by placing the buffer at the bottom of the hinge cup, after the buffer hinge is fully closed, its upper connecting rod and slider are located in the hinge cup groove. Therefore, the manufacturer needs to increase the depth of the hinge cup groove to accommodate it, which results in a larger overall thickness of the hinge cup. It cannot be installed on thinner door panels and has poor versatility. Utility Model Content

[0007] In order to overcome the defects of the prior art, the present invention provides a buffer hinge that can solve the problem mentioned in the background art of needing to increase the depth of the hinge cup groove, which makes it impossible to make the hinge cup thin.

[0008] The technical solution adopted by this utility model to solve its problem is:

[0009] A buffer hinge includes a hinge cup and a hinge arm, wherein a rocker arm assembly is provided between the hinge cup and the hinge arm to achieve hinged opening and closing, wherein:

[0010] The hinge cup has a groove configured to accommodate at least a portion of the rocker arm assembly when the hinge is fully closed.

[0011] It also includes a buffer assembly, which includes a buffer disposed at the hinge cup and located outside the groove, and a drive bracket rotatably disposed on the hinge cup and in transmission cooperation with the buffer; when the hinge cup is driven to close, the drive bracket can be driven to close simultaneously until the drive bracket abuts against the hinge arm. Under the action of the hinge closing force, the hinge arm drives the drive bracket to rotate relative to the hinge cup and drives the buffer to move to produce a buffering effect on the hinge cup.

[0012] The drive bracket is provided with an abutment part for abutting against the hinge arm. When the hinge cup is fully closed, the abutment part abuts against the upper end of the hinge arm and is located outside the groove.

[0013] Furthermore, when the hinge cup is closed until the abutting part of the drive bracket abuts against the hinge arm, the abutting part is tangent to the upper end face of the hinge arm, and during the buffer closing process of the hinge cup, the abutting part can slide on the upper end face of the hinge arm.

[0014] Furthermore, the drive bracket includes a first support rod rotatably mounted on one side wall of the groove and a support block connected to one end of the first support rod, wherein:

[0015] The support block is provided with a wear-resistant sleeve, and the support block abuts against the hinge arm through the wear-resistant sleeve to form the abutting part;

[0016] The first support rod has a first protrusion at the other end away from the support block, and the first protrusion is in transmission engagement with the buffer.

[0017] Further, the buffer includes a cylinder and a piston rod disposed on the cylinder, wherein:

[0018] The first protrusion of the first support rod abuts against the piston rod through a transmission plate to achieve a transmission connection; or, the first protrusion of the first support rod abuts against the cylinder to achieve a transmission connection.

[0019] Furthermore, it also includes a lever slidably disposed on the hinge cup, the lever having a first position and a second position on the hinge cup, wherein:

[0020] The first support rod has a second protrusion at the other end away from the support block. When the lever is moved to the second position and the hinge cup is opened, the buffer resets and drives the drive bracket to rotate relative to the hinge cup until the second protrusion on the first support rod abuts against the lever. At this time, the reset of the buffer is restricted. When the lever is moved to the first position, the lever separates from the second protrusion and the buffer can continue to reset.

[0021] Furthermore, when the lever is moved to the second position and the hinge cup is closed, the second protrusion can abut against the lever and pass over the lever so that the hinge cup continues to close.

[0022] Furthermore, the drive bracket also includes a second support rod rotatably disposed on the other side wall of the groove and opposite to the first support rod, wherein the support block is located between the first support rod and the second support rod and is connected to one end of the second support rod, wherein:

[0023] The second support rod has a third protrusion at the other end away from the support block, and a limiting protrusion is provided on the other side wall of the groove. When the hinge cup is opened, the buffer is reset and drives the drive bracket to rotate relative to the hinge cup until the third protrusion abuts against the limiting protrusion. At this time, the drive bracket is limited and fixed.

[0024] Further, the rocker arm assembly includes an outer rocker arm and an inner rocker arm. One end of the outer rocker arm is hinged to the hinge cup, and the other end is hinged to the hinge arm. One end of the inner rocker arm is hinged to the hinge cup, and the other end is hinged to the hinge arm, wherein:

[0025] It also includes a torsion spring, which is disposed at the hinge of the outer rocker arm and the hinge arm to provide a hinge closing force; the two ends of the torsion spring are respectively provided with a first torsion arm and a second torsion arm, the first torsion arm abutting against the inner side of the hinge arm, and the second torsion arm abutting against the inner side of the inner rocker arm.

[0026] Furthermore, it also includes an adjustment assembly disposed on the hinge arm, wherein:

[0027] The adjustment assembly includes an adjustment knob and a transmission block. The adjustment knob is provided with a spiral rib, and the transmission block is provided with at least two protrusions spaced apart along the length of the hinge arm. The rib passes through and is engaged between two adjacent protrusions.

[0028] The transmission block is provided with an abutting inclined surface that abuts against the first torsion arm. When the adjustment knob is turned, the transmission block can be moved along the length direction of the hinge arm by the snap-fit ​​between the rib and the protrusion, and the first torsion arm can be compressed or released by the abutting inclined surface to adjust the torque of the torsion spring.

[0029] Furthermore, the adjustment component is located on the side of the hinge arm.

[0030] In summary, the buffer hinge provided by this utility model has the following beneficial effects:

[0031] (1) During the hinge closing process, the abutting part of the drive bracket abuts against the hinge arm, the hinge arm drives the drive bracket to rotate relative to the hinge cup and generates a buffering effect on the hinge cup through the buffer. When the hinge cup is fully closed, the abutting part abuts against the upper end of the hinge arm and is located outside the hinge cup groove. With this setting, since the abutting part of the drive bracket is located outside the hinge cup groove when the hinge is closed, it does not occupy the depth space of the hinge cup groove. Therefore, there is no need to increase the depth of the hinge cup groove, so the thickness of the hinge cup can be made thinner, so it can be assembled onto a thinner door panel, making it more versatile.

[0032] (2) By setting a toggle block on the hinge cup, which has a first position and a second position, when the user moves the toggle block to the second position, the buffer's reset is restricted, thereby reducing the buffer's buffer stroke, i.e., reducing the hinge's buffer angle. For kitchen cabinet doors, a smaller buffer angle allows for quick closing of the cabinet door, improving work efficiency. When the user moves the toggle block back to the first position, the buffer can fully reset, thereby increasing the buffer's buffer stroke, i.e., increasing the hinge's buffer angle. For bedroom cabinet doors, a larger buffer angle allows the cabinet door to close slowly, reducing noise and impact, and improving the user experience. Therefore, users can choose the appropriate buffer angle according to different usage scenarios and needs, thereby meeting their needs and improving their user experience.

[0033] (3) By setting an adjustment component on the hinge arm, when the adjustment knob is turned, the transmission block can be moved along the length of the hinge arm, and the torque of the torsion spring can be adjusted by compressing or releasing the first torsion arm through the abutting inclined surface on the transmission block, thereby adjusting the closing force of the door panel. The operation is simple and convenient. In addition, by setting the adjustment component on the side of the hinge arm, compared with the traditional adjustment by inserting screws through the top of the hinge arm, the impact on the overall aesthetics of the hinge is reduced, and the quality of the product is improved. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the buffer hinge of this utility model;

[0035] Figure 2 This is an exploded view of the buffer hinge of this utility model;

[0036] Figure 3 This is an exploded view of the buffer hinge of this utility model from another perspective;

[0037] Figure 4 This is a structural schematic diagram of the buffer hinge of this utility model from another perspective (the lever is located in the first position);

[0038] Figure 5 for Figure 4 A schematic diagram of the structure after hiding the drive bracket;

[0039] Figure 6 This is a schematic diagram of the structure of the buffer hinge of this utility model after concealing the hinge cup, hinge arm and mounting base;

[0040] Figure 7 This is a cross-sectional schematic diagram of the buffer hinge of this utility model;

[0041] Figure 8 This is a schematic diagram of the structure of the buffer hinge of this utility model when it starts to buffer;

[0042] Figure 9 for Figure 8 A structural diagram with the hinge cup and mounting base hidden;

[0043] Figure 10 This is a schematic diagram of the structure of the buffer hinge of this utility model after it is fully closed;

[0044] Figure 11 for Figure 10 A structural diagram with the hinge cup and mounting base hidden;

[0045] Figure 12 This is a schematic diagram of the structure of the buffer hinge of this utility model after the toggle block is moved to the second position;

[0046] Figure 13This is a schematic diagram of the structure of the buffer hinge of this utility model after the hinge arm is hidden.

[0047] Figure 14 This is a schematic diagram of the structure of a buffer hinge according to another embodiment of the present invention;

[0048] Figure 15 This is a schematic diagram of the structure of another embodiment of the present invention, showing the buffer hinge with the mounting base hidden.

[0049] The meanings of the reference numerals in the attached figures are as follows:

[0050] 1. Hinge cup; 101. Groove; 102. First locking hole; 103. Limiting protrusion; 104. Opening; 105. Sixth hinge hole; 106. Seventh hinge hole; 107. Second locking hole; 2. Hinge arm; 201. Eighth hinge hole; 202. Ninth hinge hole; 203. Second mounting hole; 3. Outer rocker arm; 301. First hinge hole; 302. Second hinge hole; 4. Inner rocker arm; 401. Third hinge hole; 402. Fourth hinge hole; 403. Fifth hinge hole; 5. Drive bracket; 501. First support rod; 5011. First protrusion; 5012. Second protrusion; 5013. First locking block; 502. Support block; 5021. Wear-resistant sleeve; 503. Second support... 5031, third protrusion; 5032, second locking block; 5033, fourth protrusion; 6, buffer; 601, cylinder; 602, piston rod; 7, transmission plate; 8, lever; 9, mounting base; 901, first mounting hole; 902, hook; 903, third locking block; 10, torsion spring; 1001, torsion spring body; 1002, first torsion arm; 1003, second torsion arm; 11, adjusting knob; 1101, rib; 1102, cross groove; 12, transmission block; 1201, protrusion; 1202, abutting slope; 13, double needle; 1301, first needle; 1302, second needle; 14, first pin; 15, second pin; 16, third pin. Detailed Implementation

[0051] 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.

[0052] 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.

[0053] 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.

[0054] Example 1

[0055] See Figure 1-13 This utility model provides a buffer hinge, including a hinge cup 1 fixed to a cabinet door and a hinge arm 2 fixed to the inside of the cabinet. A rocker arm assembly is provided between the hinge cup 1 and the hinge arm 2 to achieve hinged opening and closing. The hinge cup 1 has a groove 101 with a top opening, which is configured to accommodate at least part of the rocker arm assembly when the hinge is fully closed. The assembly also includes a buffer assembly, comprising a buffer 6 disposed at the hinge cup 1 and located outside the groove, and a drive bracket 5 rotatably disposed on the hinge cup 1 and drivingly engaging with the buffer 6. Thus, when the hinge cup 1 is closed, the drive bracket 5 is simultaneously closed until it abuts against the hinge arm 2. At this point, under the action of the hinge closing force, the hinge arm 2 can drive the drive bracket 5 to rotate relative to the hinge cup 1 and compress the buffer 6 to buffer the hinge cup 1, thereby achieving buffered closing of the hinge cup 1.

[0056] The drive bracket 5 is provided with an abutment portion for abutting against the hinge arm 2. When the hinge cup 1 is driven to close until the abutment portion abuts against the hinge arm 2, the abutment portion abuts against the upper end face of the hinge arm 2 at a tangential or approximately tangential angle (e.g., ...). Figure 8-9 As shown), during the buffer closing process of the hinge cup 1, the abutment portion can slide on the upper end face of the hinge arm 2 until the hinge cup 1 is fully closed. At this point, the abutment portion rests against the upper end face of the hinge arm 2 and is located outside the groove 101 (as shown). Figure 10-11 (As shown).

[0057] It should be noted that in most buffer hinges on the market, when closed, the drive bracket 5 abuts against the upper surface of the rocker arm assembly. Then, under the action of the hinge closing force, the rocker arm assembly drives the drive bracket 5 to rotate relative to the hinge cup 1 and compress the buffer 6 to produce a buffering effect. The disadvantage of this method is that when the hinge is fully closed, the abutting part of the drive bracket 5 will stay between the outer rocker arm 3 and the bottom of the groove 101. At this time, the manufacturer needs to increase the depth of the groove 101 to accommodate both the abutting part and the rocker arm assembly at the same time. This results in the thickness of the hinge cup 1 becoming larger, which makes it difficult to install on thinner door panels, which is quite troublesome.

[0058] In contrast, in this application, the abutment part of the drive bracket 5 abuts against the upper end face of the hinge arm 2 and drives the drive bracket 5 to rotate relative to the hinge cup 1. During the buffer closing process of the hinge cup 1, the abutment part slides on the upper end face of the hinge arm 2 until the hinge cup 1 is fully closed. At this time, the abutment part abuts against the upper end face of the hinge arm 2 and is located outside the groove 101. With this configuration, since the abutment part is located outside the groove 101 of the hinge cup 1, it does not occupy the depth space of the groove 101 of the hinge cup 1. Therefore, it is not necessary to increase the depth of the groove 101 of the hinge cup 1, so the thickness of the hinge cup 1 can be made thinner. This allows it to be assembled onto door panels with thinner thickness, making it more versatile.

[0059] It should be noted that the placement of the buffer 6 at the hinge cup 1 as referred to in this application includes not only fixing the buffer 6 directly to the outside of the hinge cup 1, but also first installing the hinge cup 1 onto the fixing base, and then connecting the fixing base to the hinge cup 1 to achieve the assembly and fixation of the buffer 6. Neither of these methods is limited.

[0060] See Figure 2-4 The drive bracket 5 has an inverted U-shaped structure and includes a first support rod 501 and a second support rod 503 arranged opposite to each other, and a support block 502 disposed between the first support rod 501 and the second support rod 503 and connected to the upper ends of both. The support block 502 is provided with a wear-resistant sleeve 5021, and the support block 502 abuts against the hinge arm 2 through the wear-resistant sleeve 5021 to form an abutment portion. The buffer 6 is a single unit disposed on the outer side of the hinge cup 1 and close to the first support rod 501. The other end of the first support rod 501 away from the support block 502 has a first protrusion 5011, which engages with the buffer 6 in a transmission cooperation. Preferably, the first protrusion 5011 is integrally formed at the bottom of the first support rod 501 and extends downwards as a first protrusion.

[0061] Therefore, when the hinge arm 2 abuts against the wear-resistant sleeve 5021 and drives the drive bracket 5 to rotate relative to the hinge cup 1, the first protrusion 5011 of the first support rod 501 will synchronously compress the buffer 6 to achieve damping buffering of the hinge cup 1.

[0062] In this embodiment, the two side walls of the groove 101 of the hinge cup 1 are provided with first locking holes 102, the outer side wall of the first support rod 501 is provided with a first locking block 5013, and the outer side wall of the second support rod 503 is provided with a second locking block 5032. By locking the first locking block 5013 and the second locking block 5032 into the two first locking holes 102 respectively, the drive bracket 5 can be rotated and set on the hinge cup 1.

[0063] See Figure 2-4The buffer 6 is a hydraulic cylinder and includes a cylinder body 601 and a retractable piston rod 602 mounted on the cylinder body 601. The first protrusion 5011 of the first support rod 501 abuts against the piston rod 602 through a transmission plate 7 to achieve a transmission connection. One side of the transmission plate 7 abuts against the first protrusion 5011, and the other side abuts against the piston rod 602. When the first support rod 501 is rotated relative to the hinge cup 1, the piston rod 602 can be compressed and buffered through the transmission of the transmission plate 7. Conversely, when the hinge cup 1 is opened, the piston rod 602 extends and resets, and the first support rod 501 rotates and resets relative to the hinge cup 1 through the transmission plate 7.

[0064] Of course, in other embodiments, the buffer 6 can also be reversed, that is, the cylinder 601 of the buffer 6 is aligned with the first protrusion 5011. Since the area on the cylinder 601 used to abut the first protrusion 5011 is large, there is no need to set an additional transmission plate 7. The first protrusion 5011 can be directly abutted with the cylinder 601 to achieve transmission connection.

[0065] Additionally, it includes a mounting base 9 installed on the side of the hinge cup 1. The mounting base 9 has a mounting groove, in which the buffer 6 and the transmission plate 7 are both engaged. The mounting base 9 has two hooks 902 arranged vertically on one side and a third locking block 903 on the other side. The hinge cup 1 has an opening 104 connecting to the groove 101 and a second locking hole 107 on its side. When the mounting base 9 needs to be assembled onto the hinge cup 1, the two hooks 902 on the mounting base 9 are first passed through the opening 104 and engaged there, and then the third locking block 903 on the mounting base 9 is engaged in the second locking hole 107 to achieve assembly and fixation of the mounting base 9. The operation is very simple.

[0066] The system also includes a lever 8 slidably mounted on the top of the mounting base 9. Specifically, the top of the mounting base 9 has a first mounting hole 901, and the lever 8 is slidably mounted on the first mounting hole 901. The top of the lever 8 has a protrusion, and the top of the hinge cup 1 has a through hole. The protrusion passes through the through hole to facilitate user movement. When the protrusion is moved to one side of the through hole, the lever 8 is in a first position; when the protrusion is moved to the other side of the through hole, the lever 8 is in a second position. Additionally, the lower end of the first support rod 501 has a second protrusion 5012 for abutting and engaging with the lever 8. Preferably, the second protrusion 5012 is integrally formed on the lower end of the first support rod 501 and extends along one side.

[0067] Therefore, when the user moves the protrusion on the lever 8 to the second position and causes the hinge cup 1 to close to a certain angle, the second protrusion 5012 on the first support rod 501 will abut against the lever 8 (as shown in the image). Figure 12As shown in the diagram, under the closing force of the hinge cup 1, it can drive the second protrusion 5012 past the lever 8 and make the hinge cup continue to buffer and close until it is completely closed; when the hinge cup 1 is opened, the buffer 6 resets and drives the drive bracket 5 to rotate and reset relative to the hinge cup 1 until it is opened to a certain angle, the second protrusion 5012 abuts against the lever 8 again. At this time, since the reset force of the piston rod 602 of the buffer 6 is small, it cannot drive the second protrusion 5012 past the lever 8. Therefore, the second protrusion 5012 will be limited and fixed by the lever 8. At this time, the piston rod 602 of the buffer 6 cannot continue to reset, thereby reducing the buffer stroke of the buffer 6, that is, reducing the buffer angle of the hinge; if the user moves the lever 8 to the first position, the lever 8 will separate from the second protrusion 5012 and the piston rod 602 of the buffer 6 can be fully reset, thereby increasing the buffer stroke of the buffer 6, that is, increasing the buffer angle of the hinge.

[0068] Therefore, when the user moves the toggle 8 to the second position, the buffer 6's reset is restricted, thus reducing the buffer stroke of the buffer 6, i.e., reducing the hinge's buffer angle. For kitchen cabinet doors, a smaller buffer angle allows for quick closing, improving work efficiency. When the user moves the toggle 8 back to the first position, the buffer 6 can fully reset, thus increasing the buffer stroke of the buffer 6, i.e., increasing the hinge's buffer angle. For bedroom cabinet doors, a larger buffer angle allows the door to close slowly, reducing noise and impact, and improving the user experience. Therefore, users can choose the appropriate buffer angle according to different usage scenarios and needs, thereby meeting their requirements and improving their user experience.

[0069] In this embodiment, the lever 8 is a plastic part that can deform under external force, so that the second protrusion 5012 can easily pass over the lever 8 during the closing process of the hinge without causing jamming or stagnation.

[0070] See also Figure 1-3 The second support rod 503 has a third protrusion 5031 at the other end away from the support block 502. Preferably, the third protrusion 5031 is an integrally formed third protrusion at the bottom of the second support rod 503 and extends along one side. The side wall of the groove 101 also has a limiting protrusion 103. When the hinge cup 1 is opened, the piston rod 602 of the buffer 6 is reset and drives the drive bracket 5 to reset and rotate until the third protrusion 5031 abuts against the limiting protrusion 103. The drive bracket 5 can be limited and fixed, thereby limiting the reset angle of the drive bracket 5 and ensuring that the drive bracket 5 can be reset to a fixed position after each return. This ensures that the abutting part on the drive bracket 5 can abut against the hinge arm 2 when the hinge cup 1 is closed, thereby ensuring the reliability of the buffer closure of the hinge cup 1.

[0071] See Figure 2-3 as well as Figure 6-7 The rocker arm assembly includes an outer rocker arm 3 and an inner rocker arm 4. One end of the outer rocker arm 3 is hinged to a hinge cup 1, and the other end is hinged to a hinge arm 2. One end of the inner rocker arm 4 is hinged to the hinge cup 1, and the other end is hinged to the hinge arm 2. Specifically, one end of the outer rocker arm 3 has a first hinge hole 301, and the other end has a second hinge hole 302. One end of the inner rocker arm 4 has a third hinge hole 401, and the other end has a fourth hinge hole 402. The hinge cup 1 also has a sixth hinge hole 105 and a seventh hinge hole 106, and the hinge arm 2 has an eighth hinge hole 201 and a ninth hinge hole 202. Additionally, it includes a double needle 13, a first pin 14, and... The second pin 15, the double needle 13 includes a first pin 1301 and a second pin 1302. The first pin 1301 passes through the first hinge hole 301 and the sixth hinge hole 105 respectively to realize the hinge between the outer rocker arm 3 and the hinge cup 1. The second pin 1302 passes through the third hinge hole 401 and the seventh hinge hole 106 respectively to realize the hinge between the inner rocker arm 4 and the hinge cup 1. The first pin 14 passes through the second hinge hole 302 and the eighth hinge hole 201 respectively to realize the hinge between the outer rocker arm 3 and the hinge arm 2. The second pin 15 passes through the fourth hinge hole 402 and the ninth hinge hole 202 respectively to realize the hinge between the inner rocker arm 4 and the hinge arm 2.

[0072] Additionally, a torsion spring 10 is included, which is disposed at the hinge joint between the outer rocker arm 3 and the hinge arm 2 to provide hinge closing force. Specifically, the torsion spring 10 includes a torsion spring body 1001 and a first torsion arm 1002 and a second torsion arm 1003 respectively disposed at both ends of the torsion spring body 1001 and extending outward. The torsion spring body 1001 is sleeved on the first pin 14, and the first torsion arm 1002 abuts against the inner side of the hinge arm 2, while the second torsion arm 1003 abuts against the inner side of the inner rocker arm 4. Under the torsion force of the torsion spring 10, a driving force can be provided for the closing of the hinge cup 1 to drive the door panel to close.

[0073] The system also includes a third pin 16, with a fifth hinge hole 403 at one end of the inner rocker arm 4. The third pin 16 passes through the fifth hinge hole 403, and the second torsion arm 1003 abuts against the third pin 16. Additionally, it includes an adjustment assembly located on the side of the hinge arm 2 for adjusting the torque of the torsion spring 10. This adjustment assembly includes an adjustment knob 11 and a transmission block 12 that drives the adjustment knob 11. The first torsion arm 1002 abuts against the transmission block 12.

[0074] Specifically, the adjustment knob 11 is provided with a spiral rib 1101, and the transmission block 12 is provided with three protrusions 1201 spaced apart along the length of the hinge arm 2. The rib 1101 passes through and is engaged between adjacent protrusions 1201. The transmission block 12 is also provided with an abutting inclined surface 1202 that abuts against the first torsion arm 1002. When the adjustment knob 11 is turned, the engagement between the rib 1101 and the protrusion 1201 can drive the transmission block 12 to move along the length of the hinge arm 2. The abutting inclined surface 1202 can compress or release the first torsion arm 1002 to adjust the torque of the torsion spring 10, thereby adjusting the closing force of the door panel. The operation is simple and convenient.

[0075] In this embodiment, a second mounting hole 203 is provided on the side of the hinge arm 2, and the adjustment knob 11 is installed in the second mounting hole 203. The transmission block 12 is slidably disposed on the inner side of the hinge arm 2. The outer end face of the adjustment knob 11 is also provided with a cross groove 1102 to facilitate the user to turn it with a screwdriver.

[0076] Therefore, by placing the adjustment component on the side of the hinge arm 2, its appearance is more aesthetically pleasing compared to the traditional method of adjusting by inserting a screw through the top of the hinge arm 2.

[0077] Example 2

[0078] See Figure 14-15 The difference between the buffer hinge in this embodiment and that in Embodiment 1 is that the buffer hinge in this embodiment has two buffers 6, which are respectively located on both sides of the hinge cup 1. The second support rod 503 has a fourth protrusion 5033 at the end away from the support block 502. Preferably, the fourth protrusion 5033 is integrally formed at the bottom of the second support rod 503 and extends along the lower end direction. The fourth protrusion and the piston rod 602 of the buffer 6 are connected by a transmission plate 7.

[0079] Therefore, when the hinge cup 1 is closed, the drive bracket 5 can be closed simultaneously until the wear-resistant sleeve 5021 in the support block 502 on the drive bracket 5 abuts against the hinge arm 2. Under the action of the hinge closing force, the hinge arm 2 can drive the drive bracket 5 to rotate relative to the hinge cup 1 and simultaneously compress the piston rods 602 of the two buffers 6, thereby generating a greater buffering effect, which is suitable for doors with larger volume and weight.

[0080] In summary, the buffer hinge provided by this utility model has the following beneficial effects:

[0081] (i) During the hinge closing process, by abutting the drive bracket 5 against the hinge arm 2, the hinge arm 2 drives the drive bracket 5 to rotate relative to the hinge cup 1 and generates a buffering effect on the hinge cup 1 through the buffer 6. When the hinge cup 1 is fully closed, the abutting part abuts against the upper end of the hinge arm 2 and is located outside the groove 101 of the hinge cup 1. With this setting, since the abutting part of the drive bracket 5 is located outside the groove 101 of the hinge cup 1 when the hinge is closed, it does not occupy the depth space of the groove 101 of the hinge cup 1. Therefore, there is no need to increase the depth of the groove 101 of the hinge cup 1, so the thickness of the hinge cup 1 can be made thinner, so it can be assembled onto a thinner door panel, making it more versatile.

[0082] (II) By setting a toggle block 8 on the hinge cup 1, and having a first position and a second position on the hinge cup 1, when the user moves the toggle block 8 to the second position, the reset of the buffer 6 is restricted, thereby reducing the buffer stroke of the buffer 6, that is, reducing the buffer angle of the hinge. For kitchen cabinet doors, a smaller buffer angle allows for quick closing of the cabinet door, improving work efficiency. When the user moves the toggle block 8 back to the first position, the buffer 6 can be fully reset, thereby increasing the buffer stroke of the buffer 6, that is, increasing the buffer angle of the hinge. For bedroom cabinet doors, a larger buffer angle allows the cabinet door to close slowly, reducing noise and impact, and improving the user experience. Therefore, users can choose the appropriate buffer angle according to different usage scenarios and needs, thereby meeting their needs and improving the user experience.

[0083] (III) By setting an adjustment component on the hinge arm 2, when the adjustment knob 11 is turned, the transmission block 12 can be driven to move along the length direction of the hinge arm 2. The first torsion arm 1002 is compressed or released by the abutting inclined surface 1202 on the transmission block 12 to adjust the torque of the torsion spring 10, thereby adjusting the closing force of the door panel. The operation is simple and convenient. In addition, by setting the adjustment component on the side of the hinge arm 2, compared with the traditional adjustment by inserting screws through the top of the hinge arm 2, the impact on the overall aesthetics of the hinge is reduced, and the sense of quality of the product is improved.

[0084] 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.

[0085] 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.

[0086] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0087] 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 buffer hinge, characterized in that, It includes a hinge cup and a hinge arm, and a rocker arm assembly is provided between the hinge cup and the hinge arm to realize hinged opening and closing, wherein: The hinge cup has a groove configured to accommodate at least a portion of the rocker arm assembly when the hinge is fully closed. It also includes a buffer assembly, which includes a buffer disposed at the hinge cup and located outside the groove, and a drive bracket rotatably disposed on the hinge cup and in transmission cooperation with the buffer; when the hinge cup is driven to close, the drive bracket can be driven to close simultaneously until the drive bracket abuts against the hinge arm. Under the action of the hinge closing force, the hinge arm drives the drive bracket to rotate relative to the hinge cup and drives the buffer to move to produce a buffering effect on the hinge cup. The drive bracket is provided with an abutment part for abutting against the hinge arm. When the hinge cup is fully closed, the abutment part abuts against the upper end of the hinge arm and is located outside the groove.

2. The buffer hinge according to claim 1, characterized in that, When the hinge cup is closed until the abutting part of the drive bracket abuts against the hinge arm, the abutting part is tangent to the upper end face of the hinge arm. During the buffer closing process of the hinge cup, the abutting part can slide on the upper end face of the hinge arm.

3. The buffer hinge according to claim 1 or 2, characterized in that, The drive bracket includes a first support rod rotatably mounted on one side wall of the groove and a support block connected to one end of the first support rod, wherein: The support block is provided with a wear-resistant sleeve, and the support block abuts against the hinge arm through the wear-resistant sleeve to form the abutting part; The first support rod has a first protrusion at the other end away from the support block, and the first protrusion is in transmission engagement with the buffer.

4. The buffer hinge according to claim 3, characterized in that, The buffer includes a cylinder and a piston rod disposed on the cylinder, wherein: The first protrusion of the first support rod abuts against the piston rod through a transmission plate to achieve a transmission connection; or, the first protrusion of the first support rod abuts against the cylinder to achieve a transmission connection.

5. The buffer hinge according to claim 3, characterized in that, It also includes a lever slidably disposed on the hinge cup, the lever having a first position and a second position on the hinge cup, wherein: The first support rod has a second protrusion at the other end away from the support block. When the lever is moved to the second position and the hinge cup is opened, the buffer resets and drives the drive bracket to rotate relative to the hinge cup until the second protrusion on the first support rod abuts against the lever. At this time, the reset of the buffer is restricted. When the lever is moved to the first position, the lever separates from the second protrusion and the buffer can continue to reset.

6. The buffer hinge according to claim 5, characterized in that, When the lever is moved to the second position and the hinge cup is closed, the second protrusion can abut against the lever and pass over the lever so that the hinge cup continues to close.

7. The buffer hinge according to claim 3, characterized in that, The drive bracket further includes a second support rod rotatably disposed on the other side wall of the groove and opposite to the first support rod. A support block is located between the first support rod and the second support rod, and the support block is connected to one end of the second support rod, wherein: The second support rod has a third protrusion at the other end away from the support block, and a limiting protrusion is provided on the other side wall of the groove. When the hinge cup is opened, the buffer is reset and drives the drive bracket to rotate relative to the hinge cup until the third protrusion abuts against the limiting protrusion. At this time, the drive bracket is limited and fixed.

8. The buffer hinge according to claim 1 or 2, characterized in that, The rocker arm assembly includes an outer rocker arm and an inner rocker arm. One end of the outer rocker arm is hinged to the hinge cup, and the other end is hinged to the hinge arm. One end of the inner rocker arm is hinged to the hinge cup, and the other end is hinged to the hinge arm. It also includes a torsion spring, which is disposed at the hinge of the outer rocker arm and the hinge arm to provide a hinge closing force; the two ends of the torsion spring are respectively provided with a first torsion arm and a second torsion arm, the first torsion arm abutting against the inner side of the hinge arm, and the second torsion arm abutting against the inner side of the inner rocker arm.

9. The buffer hinge according to claim 8, characterized in that, It also includes an adjustment assembly mounted on the hinge arm, wherein: The adjustment assembly includes an adjustment knob and a transmission block. The adjustment knob is provided with a spiral rib, and the transmission block is provided with at least two protrusions spaced apart along the length of the hinge arm. The rib passes through and is engaged between two adjacent protrusions. The transmission block is provided with an abutting inclined surface that abuts against the first torsion arm. When the adjustment knob is turned, the transmission block can be moved along the length direction of the hinge arm by the snap-fit ​​between the rib and the protrusion, and the first torsion arm can be compressed or released by the abutting inclined surface to adjust the torque of the torsion spring.

10. The buffer hinge according to claim 9, characterized in that, The adjustment component is located on the side of the hinge arm.

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