A large angle door hinge with adjustable buffer stroke

Abstract

The utility model discloses a big angle door hinge with adjustable buffer stroke, including hinge cup and hinge arm, be equipped with rocker assembly between this hinge cup and hinge arm to realize the hinge open and close, and this rocker assembly includes inner rocker, outer rocker, first connecting piece and second connecting piece, in addition, still including adjustable buffer assembly, and the adjustable buffer assembly includes mounting seat and the buffer that sets up in the mounting seat, be equipped with the slidable knob on the mounting seat, the knob is formed with at least two abutting faces that stagger ahead and behind on, and the abutting face is used for with the fixed end abut of buffer, wherein, the knob has first position and second position on the mounting seat at least, through the knob to the first position or second position when dials, can make the different abutting face on the knob and the fixed end abut of buffer, thereby the buffer stroke size of adjusting buffer, and user can choose suitable buffer stroke according to different use scene and demand, thereby satisfy demand, improve the use experience.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically to a large-angle door hinge with adjustable buffer stroke. 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] A hinge is a mechanical device used to connect two fixed parts and allow relative rotation between them. To improve the comfort of using hinges and extend their service life, soft-close hinges were developed. They mainly achieve smooth buffering during the hinge closing process by incorporating a buffer device, preventing large impacts and noise caused by rapid closing.

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

[0005] In order to overcome the defects of the prior art, the present invention provides a large-angle door hinge with adjustable buffer stroke, which can solve the problem of the inability to adjust the buffer stroke mentioned in the background art.

[0006] The technical solution adopted by this utility model to solve its problem is: A large-angle door hinge with adjustable buffer travel 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: The rocker arm assembly includes an inner rocker arm, an outer rocker arm, a first connecting member, and a second connecting member. One end of the inner rocker arm is hinged to the hinge cup, and the other end is hinged to one end of the first connecting member. The other end of the first connecting member is hinged to the hinge arm. One end of the outer rocker arm is hinged to the hinge arm, and the other end is hinged to one end of the second connecting member. The other end of the second connecting member is hinged to the hinge cup. The first connecting member and the second connecting member intersect and are hinged together. It also includes an adjustable buffer assembly, which includes a mounting base fixedly disposed in the second connector and a buffer disposed in the mounting base. The mounting base is provided with a slidable lever, and the lever has at least two abutting surfaces that are staggered front to back. The abutting surfaces are used to abut against the fixed end of the buffer. When the hinge cup is closed, the rocker arm assembly can be swung simultaneously. When the hinge cup is closed to a certain angle, the first connector or the outer rocker arm is connected to the telescopic end of the buffer and drives the telescopic end to move relative to the fixed end to generate a buffering effect. The lever has at least a first position and a second position on the mounting base. When the lever is moved to the first position, at least one of the abutting surfaces on the front side is used to abut against the fixed end of the buffer. When the lever is moved to the second position, at least another abutting surface on the rear side is used to abut against the fixed end of the buffer.

[0007] As an optional implementation, the buffer includes a cylinder that is relatively telescopic and movable, and a piston rod. One of the cylinder and the piston rod is used to abut against the abutment surface to form a fixed end of the buffer, and the other is used to be driven to connect with the first connector or the outer rocker arm to form a telescopic end of the buffer.

[0008] As an optional implementation, one of the cylinder body and the piston rod abuts against the first connecting member or the outer rocker arm to achieve a transmission connection.

[0009] As an optional implementation, it also includes a transmission seat that slides on the mounting base, wherein one of the cylinder body and the piston rod abuts against the first connector or the outer rocker arm through the transmission seat to achieve a transmission connection.

[0010] As an optional implementation, the first connector includes two vertically spaced first side plates and a horizontally arranged first connecting plate connecting the tops of the two first side plates, wherein: When the first connector is used for transmission connection with the telescopic end of the buffer, after driving the hinge cup to close to a certain angle, the top wall of the first connecting plate is transmission connected with the telescopic end of the buffer.

[0011] As an optional implementation, the outer rocker arm includes two vertically spaced second side plates and a horizontally arranged second connecting plate connecting the tops of the two second side plates, wherein: When the outer rocker arm is used for transmission connection with the telescopic end of the buffer, the second connecting plate is transmission connected with the telescopic end of the buffer after the hinge cup is driven to close to a certain angle.

[0012] As an optional implementation, the second connecting plate is integrally bent into a bent plate portion, which is used for transmission connection with the telescopic end of the buffer.

[0013] As an optional implementation, it also includes an elastic component, which includes a spring seat fixedly disposed in the first connector, a spring disposed in the spring seat, and a spring fixing member hinged at the hinge point between the inner rocker arm and the first connector, wherein the spring fixing member abuts against the free extension end of the spring. When the hinge cup is closed or opened, the spring fixing member can be oscillated simultaneously to release or compress the spring.

[0014] As an optional implementation, a roller is further provided at the end of the spring seat away from the spring fixing member, and a cam seat is provided inside the hinge arm, with the roller rotatably disposed on the cam seat, wherein: The cam seat is provided with a locking position. When the hinge cup is fully closed, the roller is locked into the locking position to achieve a limiting position.

[0015] As an optional implementation, the inner rocker arm and the second connecting member are respectively hinged to different positions of the hinge cup.

[0016] In summary, the large-angle door hinge with adjustable buffer stroke provided by this utility model allows for increased buffer stroke. When the lever is moved to the first position, at least one abutment surface on the front side abuts against the fixed end of the buffer. When the hinge cup is closed until the rocker arm assembly is connected to the telescopic end of the buffer, the rocker arm assembly can extend or retract the telescopic end of the buffer to achieve buffering, thereby increasing the buffer stroke. For cabinet doors, a larger buffer stroke allows the cabinet door to close slowly, reducing noise and impact, and thus improving the user experience. When the lever is moved to the second position, the other abutment surface on the rear side is opposite to the fixed end of the buffer. When the hinge cup is closed until the rocker arm assembly is connected to the telescopic end of the buffer, the rocker arm assembly will move the buffer as a whole until the fixed end of the buffer abuts against the abutment surface on the rear side. Only then can the telescopic end of the buffer extend or retract to achieve buffering, thereby reducing the buffer stroke. For cabinet doors, a smaller buffer stroke allows for faster closing of the cabinet door, thereby improving closing efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a large-angle door hinge when the hinge cup is fully open (at this time, the toggle block is in the first position). Figure 2 for Figure 1 An explosion diagram; Figure 3 for Figure 2 A structural diagram from another perspective; Figure 4 for Figure 1 A structural diagram with the first connector hidden; Figure 5 for Figure 1 A schematic diagram of the structure when the first connector is hidden and the lever is moved to the second position; Figure 6 for Figure 1 A cross-sectional schematic diagram; Figure 7 This is a cross-sectional schematic diagram of the hinge cup in a large-angle door hinge of this utility model when it is closed to the start of buffering. Figure 8 This is a cross-sectional view of the hinge cup in a large-angle door hinge after it is fully closed, according to an embodiment of this utility model. Figure 9 This is a schematic diagram of the hinge cup in the large-angle door hinge of Embodiment 2 of this utility model when it is fully opened; Figure 10 for Figure 9 A structural diagram with the first connector hidden; Figure 11 for Figure 9 A schematic diagram of the structure when the first connector is hidden and the lever is moved to the second position; Figure 12 for Figure 9 A cross-sectional schematic diagram; Figure 13 This is a cross-sectional view of the hinge cup in the large-angle door hinge of Embodiment 2 of this utility model when it is closed to the start of buffering. Figure 14 This is a cross-sectional schematic diagram of the hinge cup in the large-angle door hinge of Embodiment 2 of this utility model when it is fully closed.

[0018] The meanings of the reference numerals in the attached figures are as follows: 1. Hinge cup; 2. Hinge arm; 3. Inner rocker arm; 4. Outer rocker arm; 41. Second side plate; 42. Second connecting plate; 421. Bending plate section; 5. First connecting piece; 51. First side plate; 52. First connecting plate; 6. Second connecting piece; 7. Adjustable buffer assembly; 71. Mounting base; 72. Buffer; 721. Cylinder body; 722. Piston rod; 73. Transmission base; 74. Pulley; 741. First abutment surface; 742. Second abutment surface; 743. Protrusion; 8. Elastic assembly; 81. Spring seat; 82. Spring; 83. Spring fixing piece; 84. Roller; 9. Cam seat; 91. Locking position. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Example 1 See Figure 1-8 This utility model provides a large-angle door hinge with adjustable buffer stroke, including a hinge cup 1 for fixing to a cabinet door and a hinge arm 2 for fixing to a cabinet body. A rocker arm assembly is provided between the hinge cup 1 and the hinge arm 2 to realize hinged opening and closing. Specifically, the rocker arm assembly includes an inner rocker arm 3, an outer rocker arm 4, a first connecting member 5, and a second connecting member 6. As shown in the figure, the left end of the inner rocker arm 3 is hinged to the hinge cup 1, and its right end is hinged to the left end of the first connecting member 5; the right end of the first connecting member 5 is hinged to the left end of the hinge arm 2; one end of the outer rocker arm 4 is hinged to the middle of the hinge arm 2, and its left end is hinged to the right end of the second connecting member 6; the left end of the second connecting member 6 is hinged to the hinge cup 1; wherein, the first connecting member 5 and the second connecting member 6 intersect and are hinged together.

[0023] Therefore, when the hinge cup 1 is opened or closed, the rocker arm assembly can be driven to swing simultaneously, which in turn drives the inner rocker arm 3, the outer rocker arm 4, the first connecting piece 5, and the second connecting piece 6 to swing simultaneously.

[0024] Preferably, the left end of the inner rocker arm 3 and the left end of the second connector 6 are respectively hinged to different positions of the hinge cup 1, so that the inner rocker arm 3 and the second connector 6 will not interfere with each other when the hinge is opened and closed.

[0025] It should be noted that in this embodiment, the rocker arm assembly is hinged to each other with the hinge cup 1, the hinge arm 2, and the internal parts of the rocker arm assembly via hinge shafts, which will not be described in detail here.

[0026] In addition, the large-angle door hinge also includes an adjustable buffer assembly 7, which includes a mounting base 71 fixedly disposed in the second connector 6 and a buffer 72 disposed in the mounting base 71. The mounting base 71 is provided with a slidable lever 74, on which a first abutment surface 741 and a second abutment surface 742 are formed, which are staggered front and rear. Both the first abutment surface 741 and the second abutment surface 742 are used to abut against the fixed end of the buffer 72. When the hinge cup 1 is closed, the rocker arm assembly can be driven to swing synchronously. When the hinge cup 1 is closed to a certain angle, the outer rocker arm 4 in the rocker arm assembly is connected to the telescopic end of the buffer 72 and drives the telescopic end to move relative to the fixed end to generate a buffering effect.

[0027] Specifically, the buffer 72 includes a cylinder 721 that can extend and retract relative to each other and a piston rod 722. The first abutment surface 741 and the second abutment surface 742 are both used to abut against the end of the piston rod 722, and the piston rod 722 forms the fixed end of the buffer 72. In addition, it also includes a transmission seat 73 that slides on the mounting base 71. The cylinder 721 of the buffer 72 is disposed in the transmission seat 73. The transmission seat 73 abuts against the cylinder 721 and the outer rocker arm 4 respectively to realize the transmission connection between the two. The transmission seat 73 can drive the cylinder 721 to extend and retract relative to the piston rod 722. Therefore, the cylinder 721 forms the telescopic end of the buffer 72.

[0028] Therefore, when the hinge cup 1 is closed, the rocker arm assembly can be driven to swing synchronously; when the hinge cup 1 is closed to a certain angle, the outer rocker arm 4 abuts against the transmission seat 73 and drives the cylinder 721 to compress and move relative to the piston rod 722 through the transmission seat 73 to produce a buffering effect on the hinge cup 1 until the hinge cup 1 is completely closed.

[0029] The lever 74 has a first position and a second position on the mounting base 71. When the lever 74 is moved to the first position (e.g., Figure 4 As shown), the first abutment surface 741 on the front side abuts against the end of the piston rod 722; when the lever 74 is moved to the second position, the second abutment surface 742 on the rear side abuts against the end of the piston rod 722 (as shown). Figure 5 (As shown).

[0030] Therefore, when the lever 74 is moved to the first position, the first contact surface 741 abuts against the end of the piston rod 722. When the hinge cup 1 is closed until the outer rocker arm 4 abuts against the transmission seat 73, the outer rocker arm 4 can drive the cylinder body 721 to move relative to the piston rod 722 through the transmission seat 73 to achieve buffering. This setting increases the buffer stroke. For the cabinet door, a larger buffer stroke allows the cabinet door to close slowly, thereby reducing noise and impact, and thus improving the user experience. When the lever 74 is moved to the second position, the rear side... The second contact surface 742 is opposite to the piston rod 722 of the buffer 72. When the hinge cup 1 is closed, the outer rocker arm 4 is in contact with the transmission seat 73. The outer rocker arm 4 drives the buffer 72 to move as a whole through the transmission seat 73 until the end of the piston rod 722 is in contact with the second contact surface 742 located on the rear side. At this time, the hinge cup 1 continues to close and drives the cylinder 721 to extend and retract relative to the piston rod 722 to achieve buffering. This setting reduces the buffer stroke. For cabinet doors, a smaller buffer stroke can achieve quick closing of the cabinet door, thereby improving closing efficiency.

[0031] Of course, it should be noted that in other embodiments, the buffer 72 can also be reversed, that is, the cylinder 721 and the piston rod 722 of the buffer 72 can be interchanged. In this case, the end of the cylinder 721 in the buffer 72 abuts against the first abutting surface 741 and the second abutting surface 742 on the lever 74 to achieve a limit. At this time, the cylinder 721 forms the fixed end of the buffer 72, while the piston rod 722 in the buffer 72 is set in the transmission seat 73 and drives and cooperates with the transmission seat 73. At this time, the piston rod 722 forms the telescopic end of the buffer 72. This arrangement can also achieve the same technical effect, and it is not limited here.

[0032] Additionally, it should be noted that in other embodiments, the transmission seat 73 can be omitted, and the cylinder 721 or piston rod 722 of the buffer 72 can be directly connected to the outer rocker arm 4 to achieve the transmission connection between the two, which can also achieve the same technical effect. Therefore, this embodiment is not limited.

[0033] Preferably, the lever 74 includes a lever body that slides within the mounting base 71, with the first abutment surface 741 and the second abutment surface 742 both formed on the lever body; in addition, it also includes a protrusion 743 protruding from the top of the lever body, and the second connector 6 has an clearance hole, through which the protrusion 743 passes to facilitate the user toggling it.

[0034] It should be noted that in other embodiments, three or more abutment surfaces that are staggered front to back can be set to form multiple buffer stroke adjustments. At the same time, the lever 74 has multiple adjustment positions corresponding to multiple abutment surfaces. When the lever 74 is moved to different positions, different abutment surfaces can abut against the fixed end of the buffer 72, thereby realizing multiple adjustments. This is not limited here.

[0035] See Figure 3 Specifically, the outer rocker arm 4 includes two vertically spaced second side plates 41 and a horizontally arranged second connecting plate 42 connecting the tops of the two second side plates 41. When the hinge cup 1 is driven to close to a certain angle, the second connecting plate 42 abuts against the transmission seat 73 to achieve a transmission connection. Preferably, the rear side of the second connecting plate 42 is integrally bent to form a bent plate portion 421, which is used to abut against the transmission seat 73 to achieve a transmission connection.

[0036] Thus, by forming a bent plate portion 421 on the second connecting plate 42 and abutting against the transmission seat 73 through the bent plate portion 421 to achieve transmission connection, not only is the stability and reliability of transmission improved, but also the transmission structure that does not need to be additionally provided on the second side plate 41 to abut against the transmission seat 73, as is the case with the traditional outer rocker arm 4 structure, makes the structure simpler and more compact.

[0037] See also Figure 1-8 It also includes an elastic component 8, which includes a spring seat 81 fixedly disposed in the first connecting member 5, a spring 82 disposed in the spring seat 81, and a spring fixing member 83 hinged at the hinge point between the inner rocker arm 3 and the first connecting member 5. The spring fixing member 83 abuts against the free extension end of the spring 82. When the hinge cup 1 is driven to close or open, the spring fixing member 83 can be driven to swing synchronously to release or compress the spring 82.

[0038] Therefore, by providing the elastic component 8, an elastic force can be provided for the opening or closing of the hinge cup 1.

[0039] In addition, a roller 84 is provided at the end of the spring seat 81 away from the spring fixing member 83. A cam seat 9 is provided inside the hinge arm 2, and the roller 84 is rotatably mounted on the cam seat 9. The cam seat 9 is provided with a locking position 91. When the hinge cup 1 is fully closed, the roller 84 is locked into the locking position 91 to achieve a limit, thereby improving the stability of the hinge cup 1 in the closed state.

[0040] See Figure 6-8 The closing process of the large-angle door hinge in this embodiment is as follows: See Figure 6When the hinge cup 1 is fully open, the outer rocker arm 4 is positioned away from the transmission seat 73, and the spring fixing member 83 presses down on the spring 82. Subsequently, the hinge cup 1 begins to close, and the outer rocker arm 4 swings towards the transmission seat 73. The spring 82 gradually releases its elastic force and pushes the spring fixing member 83 upward. The roller 84 at the bottom of the spring seat 81 rolls relative to the cam seat 9 until the hinge cup 1 closes to a certain angle. At this point, the bent plate portion 421 on the outer rocker arm 4 abuts against the transmission seat 73 to achieve a transmission connection. Figure 7 As shown; then it continues to drive the hinge cup 1 to close, and the outer rocker arm 4 drives the cylinder body 721 to compress and move relative to the piston rod 722 through the transmission seat 73 to produce a buffering effect on the hinge cup 1, until the hinge cup 1 is fully closed, at which point the cylinder body 721 is compressed to the bottom, as shown. Figure 8 As shown, at the same time, the spring 82 fully releases its elastic force, and the roller 84 at the bottom of the spring seat 81 rolls into the locking position 91 of the cam seat 9 to achieve a limit.

[0041] Example 2 See Figure 9-13 The difference between the large-angle door hinge in this embodiment and the first embodiment is that in this embodiment, the transmission connection is achieved by the first connecting member 5 in the rocker arm assembly abutting against the transmission seat 73; wherein, since the first connecting member 5 is located on the other side of the adjustable buffer assembly 7, the adjustable buffer assembly 7 needs to be reversed, and the transmission seat 73 needs to be partially extended out of the second connecting member 6.

[0042] Specifically, the first connecting member 5 includes two vertically spaced first side plates 51 and a horizontally arranged first connecting plate 52 connecting the tops of the two first side plates 51. When the hinge cup 1 is driven to close to a certain angle, the top wall of the first connecting plate 52 is connected to the transmission seat 73.

[0043] See Figure 10-11 The mounting base 71 is also provided with a lever 74. The lever 74 is also provided with a first abutment surface 741 and a second abutment surface 742 that abut against the end of the piston rod 722 of the buffer 72 to achieve a limiting position. When the lever 74 is moved to the first position or the second position, the first abutment surface 741 or the second abutment surface 742 can abut against the piston rod 722 of the buffer 72 respectively, thereby realizing the adjustment of the buffer stroke. Its structural principle is the same as that of Embodiment 1, so it will not be described again here.

[0044] See Figure 12-14 The closing process of the large-angle door hinge in this embodiment is as follows: See Figure 12When the hinge cup 1 is fully open, the first connecting plate 52 of the first connecting member 5 is positioned away from the transmission seat 73, and the spring fixing member 83 presses down on the spring 82. Subsequently, the hinge cup 1 begins to close, and the first connecting member 5 swings towards the transmission seat 73. The spring 82 gradually releases its elastic force and pushes the spring fixing member 83 upward. The roller 84 at the bottom of the spring seat 81 rolls relative to the cam seat 9 until the hinge cup 1 closes to a certain angle. At this point, the top wall of the first connecting plate 52 abuts against the transmission seat 73 to achieve a transmission connection. Figure 13 As shown; then, it continues to drive the hinge cup 1 to close. The first connecting plate 52 drives the cylinder body 721 to compress and move relative to the piston rod 722 through the transmission seat 73 to produce a buffering effect on the hinge cup 1, until the hinge cup 1 is fully closed. At this time, the cylinder body 721 is compressed to the bottom, as shown. Figure 14 As shown, at the same time, the spring 82 fully releases its elastic force, and the roller 84 at the bottom of the spring seat 81 rolls into the locking position 91 of the cam seat 9 to achieve a limit.

[0045] In summary, the large-angle door hinge with adjustable buffer stroke provided by this utility model allows for buffering when the lever 74 is moved to the first position. At least one abutment surface on the front side abuts against the fixed end of the buffer 72. When the hinge cup 1 is closed until the rocker arm assembly is connected to the telescopic end of the buffer 72, the rocker arm assembly can drive the telescopic end of the buffer 72 to extend and retract to achieve buffering, thereby increasing the buffer stroke. For cabinet doors, a larger buffer stroke allows the cabinet door to close slowly, thereby reducing noise and impact, and improving the user experience. When the lever 74 is moved to the second position, another abutment surface on the rear side is opposite to the fixed end of the buffer 72. When the hinge cup 1 is closed until the rocker arm assembly is connected to the telescopic end of the buffer 72, the rocker arm assembly will drive the buffer 72 to move as a whole until the fixed end of the buffer 72 abuts against the abutment surface on the rear side. Only then can the telescopic end of the buffer 72 extend and retract to achieve buffering, thereby reducing the buffer stroke. For cabinet doors, a smaller buffer stroke allows for quick closing of the cabinet door, thereby improving closing efficiency.

[0046] 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.

[0047] 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.

[0048] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0049] 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 large-angle door hinge with adjustable buffer travel, 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 rocker arm assembly includes an inner rocker arm, an outer rocker arm, a first connecting member, and a second connecting member. One end of the inner rocker arm is hinged to the hinge cup, and the other end is hinged to one end of the first connecting member. The other end of the first connecting member is hinged to the hinge arm. One end of the outer rocker arm is hinged to the hinge arm, and the other end is hinged to one end of the second connecting member. The other end of the second connecting member is hinged to the hinge cup. The first connecting member and the second connecting member intersect and are hinged together. It also includes an adjustable buffer assembly, which includes a mounting base fixedly disposed in the second connector and a buffer disposed in the mounting base. The mounting base is provided with a slidable lever, and the lever has at least two abutting surfaces that are staggered front to back. The abutting surfaces are used to abut against the fixed end of the buffer. When the hinge cup is closed, the rocker arm assembly can be swung simultaneously. When the hinge cup is closed to a certain angle, the first connector or the outer rocker arm is connected to the telescopic end of the buffer and drives the telescopic end to move relative to the fixed end to generate a buffering effect. The lever has at least a first position and a second position on the mounting base. When the lever is moved to the first position, at least one of the abutting surfaces on the front side is used to abut against the fixed end of the buffer. When the lever is moved to the second position, at least another abutting surface on the rear side is used to abut against the fixed end of the buffer.

2. The large-angle door hinge according to claim 1, characterized in that, The buffer includes a cylinder that can be telescopically moved relative to each other and a piston rod. One of the cylinder and the piston rod is used to abut against the contact surface to form a fixed end of the buffer, and the other is used to be driven to connect with the first connector or the outer rocker arm to form a telescopic end of the buffer.

3. The large-angle door hinge according to claim 2, characterized in that, One of the cylinder body and the piston rod abuts against the first connecting member or the outer rocker arm to achieve a transmission connection.

4. The large-angle door hinge according to claim 2, characterized in that, It also includes a transmission seat that slides on the mounting base, wherein one of the cylinder body and the piston rod abuts against the first connecting member or the outer rocker arm through the transmission seat to achieve a transmission connection.

5. The large-angle door hinge according to any one of claims 1-4, characterized in that, The first connector includes two vertically spaced first side plates and a horizontally arranged first connecting plate connecting the tops of the two first side plates, wherein: When the first connector is used for transmission connection with the telescopic end of the buffer, after driving the hinge cup to close to a certain angle, the top wall of the first connecting plate is transmission connected with the telescopic end of the buffer.

6. The large-angle door hinge according to any one of claims 1-4, characterized in that, The outer rocker arm includes two vertically spaced second side plates and a horizontally arranged second connecting plate connecting the tops of the two second side plates, wherein: When the outer rocker arm is used for transmission connection with the telescopic end of the buffer, the second connecting plate is transmission connected with the telescopic end of the buffer after the hinge cup is driven to close to a certain angle.

7. The large-angle door hinge according to claim 6, characterized in that, The second connecting plate has an integrally bent bending section, which is used for transmission connection with the telescopic end of the buffer.

8. The large-angle door hinge according to any one of claims 1-4, characterized in that, It also includes an elastic component, which includes a spring seat fixedly disposed in the first connector, a spring disposed in the spring seat, and a spring fixing member hinged at the hinge point between the inner rocker arm and the first connector, wherein the spring fixing member abuts against the free extension end of the spring. When the hinge cup is closed or opened, the spring fixing member can be oscillated simultaneously to release or compress the spring.

9. The large-angle door hinge according to claim 8, characterized in that, A roller is also provided at one end of the spring seat away from the spring fixing member, and a cam seat is provided inside the hinge arm. The roller is rotatably mounted on the cam seat, wherein: The cam seat is provided with a locking position. When the hinge cup is fully closed, the roller is locked into the locking position to achieve a limiting position.

10. The large-angle door hinge according to any one of claims 1-4, characterized in that, The inner rocker arm and the second connecting member are respectively hinged at different positions on the hinge cup.

Images