Hinge with small-angle buffering function

Abstract

The utility model relates to the technical field of hinges, in particular to a hinge with a small-angle buffering function, which comprises a base, a hinge cup, a hinge arm mechanism and a buffering mechanism, the hinge arm mechanism comprises a first hinge arm and a second hinge arm, one end of the first hinge arm and one end of the second hinge arm are respectively connected with the base, and the other end of the first hinge arm and the other end of the second hinge arm are respectively hinged with the hinge cup. A swinging four-bar mechanism is formed among the base, the first hinge arm, the hinge cup and the second hinge arm, the buffer mechanism is arranged on the base, and the movable end of the buffer mechanism is in linkage connection with the hinge arm mechanism. Compared with the prior art, according to the hinge, through ingenious combination of the four-connecting-rod mechanism and the buffering mechanism, more optimized distribution of force is achieved. By means of the design, the load of a traditional large-diameter hinge cup is relieved, and the bearing capacity of the whole hinge system is improved through the synergistic effect of the multiple connecting points. Therefore, even if a large-diameter hinge cup is not used, stable installation and smooth operation of the door plate with the thickness of 25 mm can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware accessories, in particular to a hinge with a small-angle buffering function. Background Art

[0002] In traditional furniture design and manufacturing, hinges are key components connecting door panels to cabinets or frames. Their general structure consists of a base for connection to the cabinet or frame, a hinge cup for connection to the door panel, and a hinge arm connecting the base and cup. The design and selection of hinges directly impact the product's aesthetics, stability, and ease of use. Traditional hinges, in particular, face limitations when working with door panels of a certain thickness, such as 25mm.

[0003] To ensure stable installation and smooth opening and closing of door panels thicker than 25mm, existing hinge cups with a diameter of 40mm are often required. This design choice is primarily based on mechanical stability considerations. The larger hinge cup size provides sufficient support area, distributing the pressure from the door panel's weight and ensuring durability over long-term use. However, this approach also directly increases the size of the hinge cup opening in the door panel, requiring it to reach 40mm, which is quite unusual compared to other standard opening sizes on the market. This increase in special opening sizes presents multiple challenges for furniture manufacturers, installers, and end customers. First, for manufacturers, it requires additional drilling tools and molds of varying specifications, increasing production costs and management complexity. Second, during installation, the installer must precisely measure and drill the 40mm opening, which requires a high level of skill. Any inaccuracy can compromise the installation precision and aesthetics of the door panel. Finally, for customers, finding hinges that match this special opening size can be challenging if the door panel becomes damaged or needs replacement, limiting the flexibility and convenience of part replacement. Furthermore, as modern home styles trend toward simplicity and customization, consumers are increasingly demanding greater attention to detail in their furniture. Traditional Φ40mm hinge openings can not only appear visually bulky and inconsistent with the lightness sought by modern aesthetics, but in certain design scenarios, overly large openings can also disrupt the overall design of the door panel, affecting the aesthetic and harmony of the home environment.

[0004] In summary, the Φ40mm hinge cup and its corresponding opening size used in traditional hinges for 25mm thick door panels, while ensuring structural strength and stability to a certain extent, also bring about many problems such as increased production costs, increased installation difficulty, limited customer choices, and aesthetic deficiencies. Technological innovation within the industry is urgently needed to address these pain points. Utility Model Content

[0005] The purpose of the invention of the utility model is to solve the problems of high production cost, difficult installation, limited customer choices, etc. of the existing hinges for door panels thicker than 25 mm, and to provide a hinge with a small-angle buffering function.

[0006] In order to achieve the above invention objectives, the present invention adopts the following technical solutions:

[0007] A hinge with a small-angle buffering function includes a base, a hinge cup, a hinge arm mechanism and a buffer mechanism. The hinge arm mechanism includes a first hinge arm and a second hinge arm. One end of the first hinge arm and the second hinge arm are respectively connected to the base, and the other end is respectively hinged to the hinge cup, so that a swingable four-bar linkage is formed between the base, the first hinge arm, the hinge cup and the second hinge arm. The buffer mechanism is arranged on the base, and its movable end is linked to the hinge arm mechanism.

[0008] Compared with the existing technology, the hinge of the present invention achieves a more optimized force distribution through the ingenious combination of a four-bar linkage and a buffer mechanism. This design not only reduces the load of traditional large-diameter hinge cups (such as Φ40mm), but also improves the load-bearing capacity of the entire hinge system through the synergistic effect of multiple connection points. Therefore, even without using a large-diameter hinge cup, stable installation and smooth operation of door panels thicker than 25mm can be ensured. At the same time, it solves the problems of excessive opening size and visual bulkiness caused by traditional large-diameter hinge cups. During operation, the hinge cup of the hinge can rotate relative to the base, and the front end of the four-bar linkage swings with the rotation of the hinge cup. When the door body is opened or closed, the hinge cup rotates synchronously, driving the first hinge arm and the second hinge arm to rotate with their respective hinge holes as the rotation center, thereby realizing the folding and unfolding of the hinge.

[0009] Furthermore, the base comprises a fixed base plate, an adjustable base plate, and an intermediate element. The fixed base plate is provided with a first mounting portion and a second mounting portion. The intermediate element and the adjustable base plate form a U-shape. The adjustable base plate is mounted on the intermediate element so as to be movable forward and backward and protrude forward from the intermediate element to facilitate connection with the hinge mechanism. The buffer mechanism is disposed in the space formed between the upper end of the first mounting portion and the inner side of the adjustable base plate. Its movable end protrudes forward from the space to facilitate connection with the hinge mechanism. This solution illustrates the specific structural design of the base.

[0010] Furthermore, the hinge arm mechanism includes an elastic buffer, and the adjustable base plate is provided with an obliquely distributed first hinge hole and a second hinge hole on both sides, and the side wall of the hinge cup is provided with an obliquely distributed third hinge hole and a fourth hinge hole, the rear side of the first hinge arm is provided with a first axial hole to cooperate with the first hinge hole, and the front side is provided with a second axial hole to cooperate with the third hinge hole, the first hinge hole and the first axial hole are connected through a first connecting shaft, the elastic buffer is sleeved on the first connecting shaft, and the third hinge hole and the second axial hole are connected through a second connecting shaft, the rear side of the second hinge arm is provided with a third axial hole to cooperate with the second hinge hole, and the front side is provided with a fourth axial hole to cooperate with the fourth hinge hole, the second hinge hole and the third axial hole are connected through a third connecting shaft, and the fourth hinge hole and the fourth axial hole are connected through a fourth connecting shaft. This solution is a specific design of a four-bar linkage. Because the base is fixed to the cabinet or frame, the hinge cup can rotate relative to the base. Therefore, when the door is opened or closed, the hinge cup rotates synchronously, driving the first hinge arm to rotate about the first hinge hole and the second hinge arm to rotate about the second hinge hole. When the door is closed, the hinge arm mechanism swings downward, allowing the hinge to fold. When the door is opened, the hinge cup returns to its original position parallel to the base. The elastic buffer in this solution absorbs and mitigates the impact and vibration generated when the door closes, making the closing process smoother and quieter.

[0011] Furthermore, the center distance between the first hinge hole and the second hinge hole ranges from 12.8 to 14.8 mm; the center distance between the third hinge hole and the fourth hinge hole ranges from 7 to 9 mm; the center distance between the first axial hole and the second axial hole ranges from 18 to 20 mm; and the center distance between the third axial hole and the fourth axial hole ranges from 17.23 to 19.23 mm. This hinge has specific center distances between each hinge hole and axial hole. These designs, without increasing the overall size of the base and hinge cup, increase the center distance between adjacent nodes of the four-bar linkage, lengthening the force-bearing lever, reducing the spring load, and minimizing the impact damage of the closing force on the buffer mechanism, thereby improving the service life and stability of the hinge.

[0012] Furthermore, the elastic buffer is a torsion spring, and the front opposite sides of the adjustable base plate are provided with a first connecting portion protruding forward and a second connecting portion protruding downward. The middle of the front portion is also provided with an abutting portion adapted to the torsion spring, the first hinge hole is provided on the first connecting portion, and the second hinge hole is provided on the second connecting portion, and one end of the torsion spring abuts against the lower side of the abutting portion.

[0013] Furthermore, the buffer mechanism is a hydraulic cylinder with a small-angle buffer function.

[0014] Furthermore, the front end of the adjustable bottom plate is provided with an upwardly inclined shielding portion. The shielding portion of this solution can partially shield the hinge arm mechanism, and its upwardly inclined design can reserve accommodation space for the hinge arm mechanism to avoid interference with the hinge arm mechanism.

[0015] Furthermore, a driving protrusion is provided at the rear of the second articulated arm, and the buffer mechanism is connected to the second articulated arm by a transmission mechanism. The transmission mechanism includes a first transmission arm and a second transmission arm. The upper ends of the first transmission arm and the second transmission arm are hinged to form a V-shaped structure. The lower ends of the first transmission arm and the second transmission arm are hinged to the second articulated arm and the buffer mechanism, respectively, so that the V-shaped structure is folded or extended under the drive of the first articulated arm, and at the same time drives the buffer mechanism to stretch or compress. In this solution, when the hinge is in the expanded state, the hinge cup is parallel to the base, and the second transmission arm is in a parallel state. Its rear portion squeezes the V-shaped structure to fold it, and the movable end of the buffer mechanism is stretched forward. When the hinge is turned into a closed state, the hinge cup and the base are turned from parallel to vertical. The front end of the second hinge cup swings downward and the rear end moves forward, causing the U-shaped structure to be expanded, thereby causing the movable end of the buffer mechanism to be compressed toward its main body. Therefore, through the improvement of this solution, the traditional buffer cylinder tension buffer structure is changed to a compression buffer structure, realizing a small-angle buffer function.

[0016] Furthermore, the hinge cup includes a first accommodating portion and a second accommodating portion, the inner sides of the first accommodating portion and the second accommodating portion are grooves, the second accommodating portion is located on the rear side of the first accommodating portion, and the first accommodating portion is connected to the second accommodating portion, the second accommodating portion is provided with an air-avoiding opening passing through the rear part thereof, the front part of the hinge arm mechanism is arranged on the inner side of the second accommodating portion through the air-avoiding opening, and when the hinge is in a folded state, the first accommodating portion cover is arranged on the front part of the base.

[0017] Furthermore, a connecting boss is provided on the periphery of the first accommodating portion, and an outer flange is provided on the periphery of the second accommodating portion. The height of the outer flange is flush with the groove opening of the second accommodating portion. The connecting boss protrudes upward from the outer flange and is provided with a mounting structure for fixing to the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the hinge in the expanded state Figure 1 ;

[0019] Figure 2 This is the structural decomposition of the hinge's expanded state. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the structure of the hinge in the expanded state Figure 2 ;

[0021] Figure 4 This is the structural decomposition of the hinge's expanded state. Figure 2 ;

[0022] Figure 5 It is a structural diagram of the hinge in the folded state;

[0023] Figure 6 This is an exploded view of the hinge in its folded state;

[0024] Figure 7 is an assembly drawing of the second articulated arm, the transmission mechanism, and the buffer mechanism in the unfolded state;

[0025] Figure 8 It is an assembly drawing of the second articulated arm, the transmission mechanism and the buffer mechanism in a folded state.

[0026] Description of labels:

[0027] Base 1, fixed base plate 11, first mounting portion 111, second mounting portion 112, adjustable base plate 12, first hinge hole 121, second hinge hole 122, first connecting shaft 123, third connecting shaft 124, shielding portion 125, first connecting portion 126, second connecting portion 127, abutting portion 128, intermediate element 13, hinge cup 2, third hinge hole 21, fourth hinge hole 22, second connecting shaft 23, fourth connecting shaft 24, first accommodating portion 25, second accommodating portion 26, connecting boss 27, outer flange 28, air-avoiding opening 29, buffer mechanism 3, hinge arm mechanism 4, first hinge arm 41, first axis hole 411, second axis hole 412, second hinge arm 42, third axis hole 421, fourth axis hole 422, driving protrusion 423, elastic buffer 43, transmission mechanism 5, first transmission arm 51, second transmission arm 52. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below with reference to the accompanying drawings:

[0029] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by “front”, “rear”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] See also Figure 1-8As shown, the utility model discloses a hinge with a small-angle buffering function, including a base 1, a hinge cup 2, a hinge arm mechanism 4 and a buffer mechanism 3, the hinge arm mechanism 4 includes a first hinge arm 41 and a second hinge arm 42, one end of the first hinge arm 41 and the second hinge arm 42 are respectively connected to the base 1, and the other end is respectively hinged to the hinge cup 2, so that a swingable four-bar linkage is formed between the base 1, the first hinge arm 41, the hinge cup 2 and the second hinge arm 42, the buffer mechanism 3 is arranged on the base 1, and its movable end is linked to the hinge arm mechanism 4.

[0031] The specific structural design of the above-mentioned base 1 is as follows: it includes a fixed base plate 11, an adjustable base plate 12 and an intermediate element 13. The fixed base plate 11 is provided with a first mounting portion 111 and a second mounting portion 112. The intermediate element 13 and the adjustable base plate 12 are U-shaped. The adjustable base plate 12 can be movably mounted on the intermediate element 13 forward and backward, and protrudes forward from the intermediate element 13 so as to be connected to the hinge arm mechanism 4. The buffer mechanism 3 is arranged in the space formed by the upper end of the first mounting portion 111 and the inner side of the adjustable base plate 12, and its movable end protrudes forward from the space to be connected to the hinge arm mechanism 4.

[0032] The specific scheme of the above-mentioned four-bar linkage is designed as follows: the hinge arm mechanism 4 includes an elastic buffer 43, the two sides of the adjustable base plate 12 are provided with a first hinge hole 121 and a second hinge hole 122 that are obliquely distributed, the side wall of the hinge cup 2 is provided with a third hinge hole 21 and a fourth hinge hole 22 that are obliquely distributed, the rear side of the first hinge arm is provided with a first axis hole 411 to match the first hinge hole 121, and the front side is provided with a second axis hole 412 to match the third hinge hole 21, the first hinge hole 121 and the first axis hole 411 are connected by a first link The second hinge arm 42 is provided with a third axis hole 421 on the rear side thereof to match the second hinge hole 122, and a fourth axis hole 422 on the front side thereof to match the fourth hinge hole 22. The second hinge hole 122 is connected to the third axis hole 421 via a third connecting axis 124, and the fourth hinge hole 22 is connected to the fourth axis hole 422 via a fourth connecting axis 24. Since the base 1 is fixed to the cabinet or frame, the hinge cup 2 can rotate relative to the base 1. Therefore, when the door is opened or closed, the hinge cup 2 rotates synchronously, driving the first hinge arm 41 to rotate about the first hinge hole 121 and the second hinge arm 42 to rotate about the second hinge hole 122. When the door is closed, the hinge arm mechanism 4 swings downward to fold the hinge. When the door is opened, the hinge cup 2 returns to its original position parallel to the base 1. The elastic buffer member 43 of this solution can absorb and reduce the impact force and vibration generated when the door body is closed, thereby making the closing process smoother and quieter.

[0033] Each hinge hole and the shaft hole have a specific center distance range, as follows: the center distance between the first hinge hole 121 and the second hinge hole 122 is between 12.8-14.8 mm; the center distance between the third hinge hole 21 and the fourth hinge hole 22 is between 7-9 mm; the center distance between the first shaft hole 411 and the second shaft hole 412 is between 18-20 mm; and the center distance between the third shaft hole 421 and the fourth shaft hole 422 is between 17.23-19.23 mm. The hinge has a specific center distance range between each hinge hole and the shaft hole. These designs increase the center distance between adjacent nodes of the four-bar linkage without increasing the overall size of the base 1 and the hinge cup 2, thereby lengthening the force-bearing lever, reducing the spring load, and reducing the impact damage of the closing force on the buffer mechanism 3, thereby improving the service life and stability of the hinge.

[0034] The above-mentioned elastic buffer member 43 is a torsion spring. The front opposite sides of the adjustable base plate 12 are provided with a first connecting portion 126 protruding forward and a second connecting portion 127 protruding downward. The middle of the front part is also provided with an abutting portion 128 adapted to the torsion spring. The first hinge hole 121 is provided on the first connecting portion 126, and the second hinge hole 122 is provided on the second connecting portion 127. One end of the torsion spring abuts against the lower side of the abutting portion 128.

[0035] The buffer mechanism 3 is a hydraulic cylinder with a small-angle buffer function. It should be noted that the internal structure of the hydraulic cylinder of the present invention can adopt the existing hydraulic cylinder solution with a small-angle buffer function, which will not be described in detail in the present invention.

[0036] In order to shield the hinge arm mechanism 4, an upwardly inclined shielding portion 125 is provided at the top of the front end of the adjustable base plate 12, which can partially shield the hinge arm mechanism 4, and its upward inclined design can reserve accommodation space for the hinge arm mechanism 4 to avoid interference with the hinge arm mechanism 4.

[0037] See also Figure 7-8As shown, the specific connection scheme between the hinge arm mechanism 4 and the buffer mechanism is as follows: a driving protrusion 423 is provided at the rear of the second hinge arm 42. The buffer mechanism 3 and the second hinge arm 42 are connected by a transmission mechanism 5. The transmission mechanism 5 includes a first transmission arm and a second transmission arm 52. The upper ends of the first transmission arm and the second transmission arm 52 are hinged to form a V-shaped structure. The lower ends of the first transmission arm and the second transmission arm 52 are hinged to the second hinge arm 42 and the buffer mechanism 3, respectively. This allows the V-shaped structure to fold or extend under the drive of the first hinge arm 41, and simultaneously causes the buffer mechanism 3 to stretch or compress. In this scheme, when the hinge is in the expanded state, the hinge cup 2 is parallel to the base 1, and the second transmission arm 52 is parallel. Its rear portion squeezes the V-shaped structure to fold it, and the movable end of the buffer mechanism 3 is stretched forward. When the hinge is in the closed state, the hinge cup 2 and the base 1 rotate from parallel to perpendicular. The front end of the second hinge cup 2 swings downward, and the rear end moves forward, causing the U-shaped structure to unfold, thereby compressing the movable end of the buffer mechanism 3 toward its main body.

[0038] The specific scheme of the above-mentioned hinge cup 2 is: it includes a first accommodating portion 25 and a second accommodating portion 26, the inner sides of the first accommodating portion 25 and the second accommodating portion 26 are grooves, the second accommodating portion 26 is located on the rear side of the first accommodating portion 25, and the first accommodating portion 25 is connected to the second accommodating portion 26, the second accommodating portion 26 is provided with an air-avoiding opening 29 passing through the rear part thereof, and the front part of the hinge arm mechanism 4 is arranged on the inner side of the second accommodating portion 26 through the air-avoiding opening 29. When the hinge is in a folded state, the first accommodating portion 25 is covered on the front part of the base 1.

[0039] The outer periphery of the above-mentioned first accommodating portion 25 is provided with a connecting boss 27, and the outer periphery of the second accommodating portion 26 is provided with an outer flange 28. The height of the outer flange 28 is flush with the groove opening of the second accommodating portion 26. The connecting boss 27 protrudes upward from the outer flange 28 and is provided with a mounting structure for fixing to the door body.

[0040] Compared with the prior art, the hinge of the present invention achieves a more optimized force distribution through the ingenious combination of a four-bar linkage and a buffer mechanism 3. This design not only reduces the load of the traditional large-diameter hinge cup 2 (such as Φ40mm), but also improves the load-bearing capacity of the entire hinge system through the synergistic effect of multiple connection points. Therefore, even if a large-diameter hinge cup 2 is not used, the stable installation and smooth operation of a 25mm thick door panel can be ensured. At the same time, the problems of excessive opening size and visual bulkiness caused by the traditional large-diameter hinge cup 2 are solved. During operation, the hinge cup 2 of the hinge can rotate relative to the base 1, and the front end of the four-bar linkage swings with the rotation of the hinge cup 2. When the door body is opened or closed, the hinge cup 2 rotates synchronously, driving the first hinge arm 41 and the second hinge arm 42 to rotate with their respective hinge holes as the rotation center, thereby realizing the folding and unfolding of the hinge.

[0041] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. Based on the disclosure and teachings of the above description, those skilled in the art in the field to which the present invention belongs can also make changes and modifications to the above-mentioned embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the present invention.

Claims

1. A hinge with a small angle buffer function, characterized in that: The invention comprises a base (1), a hinge cup (2), a hinge arm mechanism (4) and a buffer mechanism (3); the hinge arm mechanism (4) comprises a first hinge arm (41) and a second hinge arm (42); one end of the first hinge arm (41) and the second hinge arm (42) are respectively connected to the base (1), and the other end is respectively hinged to the hinge cup (2), so that a swingable four-bar linkage is formed between the base (1), the first hinge arm (41), the hinge cup (2) and the second hinge arm (42); the buffer mechanism (3) is arranged on the base (1), and its movable end is linked to the hinge arm mechanism (4).

2. The hinge according to claim 1, characterized in that The base (1) comprises a fixed base plate (11), an adjustable base plate (12) and an intermediate element (13). The fixed base plate (11) is provided with a first mounting portion (111) and a second mounting portion (112). The intermediate element (13) and the adjustable base plate (12) are U-shaped. The adjustable base plate (12) is mounted on the intermediate element (13) in a manner that allows it to move forward and backward, and protrudes forward from the intermediate element (13) so as to be connected to the hinge arm mechanism (4). The buffer mechanism (3) is arranged in a space formed by the upper end of the first mounting portion (111) and the inner side of the adjustable base plate (12), and its movable end protrudes forward from the space so as to be connected to the hinge arm mechanism (4).

3. The hinge according to claim 2, characterized in that The hinge arm mechanism (4) includes an elastic buffer (43), a first hinge hole (121) and a second hinge hole (122) are provided on both sides of the adjustable base plate (12), a third hinge hole (21) and a fourth hinge hole (22) are provided on the side wall of the hinge cup (2), a first axis hole (411) is provided on the rear side of the first hinge arm (41) to match the first hinge hole (121), and a second axis hole (412) is provided on the front side to match the third hinge hole (21), the first hinge hole (121) and the first axis hole (411) are connected by a first connecting shaft (123), The elastic buffer (43) is sleeved on the first connecting shaft (123), the third hinge hole (21) and the second shaft hole (412) are connected through the second connecting shaft (23), the rear side of the second hinge arm (42) is provided with a third shaft hole (421) to match the second hinge hole (122), and the front side is provided with a fourth shaft hole (422) to match the fourth hinge hole (22), the second hinge hole (122) and the third shaft hole (421) are connected through the third connecting shaft (124), and the fourth hinge hole (22) and the fourth shaft hole (422) are connected through the fourth connecting shaft (24).

4. The hinge according to claim 3, characterized in that The center distance between the first hinge hole (121) and the second hinge hole (122) is in the range of 12.8-14.8 mm; the center distance between the third hinge hole (21) and the fourth hinge hole (22) is in the range of 7-9 mm; the center distance between the first axial hole (411) and the second axial hole (412) is in the range of 18-20 mm; and the center distance between the third axial hole (421) and the fourth axial hole (422) is in the range of 17.23-19.23 mm.

5. The hinge according to claim 3, characterized in that The elastic buffer (43) is a torsion spring. The front of the adjustable base plate (12) is provided with a first connecting portion (126) protruding forward and a second connecting portion (127) protruding downward on two opposite sides. The upper side of the front is also provided with an abutting portion (128) adapted to the torsion spring. The first hinge hole (121) is provided on the first connecting portion (126), and the second hinge hole (122) is provided on the second connecting portion (127). One end of the torsion spring abuts against the lower side of the abutting portion (128).

6. The hinge according to claim 1, wherein: The buffer mechanism (3) is a hydraulic cylinder with a small-angle buffer function.

7. The hinge according to claim 6, characterized in that A driving protrusion (423) is provided at the rear of the second articulated arm (42), and the buffer mechanism (3) is connected to the second articulated arm (42) by setting a transmission mechanism (5). The transmission mechanism (5) includes a first transmission arm (51) and a second transmission arm (52). The upper ends of the first transmission arm (51) and the second transmission arm (52) are hinged to form a V-shaped structure. The lower ends of the first transmission arm (51) and the second transmission arm (52) are hinged to the second articulated arm (42) and the buffer mechanism (3) respectively, so that the V-shaped structure is folded or stretched under the drive of the first articulated arm (41), and the buffer mechanism (3) is simultaneously driven to stretch or compress.

8. The hinge according to claim 5, characterized in that The front end top of the adjustable bottom plate (12) is provided with an upwardly inclined shielding portion (125).

9. The hinge according to claim 1, wherein: The hinge cup (2) comprises a first accommodating portion (25) and a second accommodating portion (26); the inner sides of the first accommodating portion (25) and the second accommodating portion (26) are grooves; the second accommodating portion (26) is located at the rear side of the first accommodating portion (25), and the first accommodating portion (25) is connected to the second accommodating portion (26); the second accommodating portion (26) is provided with an air-avoiding opening that passes through the rear side thereof; the front part of the hinge arm mechanism (4) is arranged on the inner side of the second accommodating portion (26) through the air-avoiding opening; when the hinge is in a folded state, the first accommodating portion (25) is covered at the front part of the base (1).

10. The hinge according to claim 9, characterized in that The outer periphery of the first accommodating portion (25) is provided with a connecting boss (27), and the outer periphery of the second accommodating portion (26) is provided with an outer flange (28). The height of the outer flange (28) is flush with the groove opening of the second accommodating portion (26). The connecting boss (27) protrudes upward from the outer flange (28) and is provided with a mounting structure for fixing to the door body.

Images