Concealed cup hinge

Abstract

The embodiment of the present application provides a cup-shaped concealed hinge, which includes: a hinge arm, a connecting piece, a hinge cup and a buffer structure; the connecting piece is rotatably connected between the hinge arm and the hinge cup, and the hinge arm is provided with a first extension arm; wherein the connecting piece includes a first connecting piece, a second connecting piece, a third connecting piece and a fourth connecting piece; wherein the second connecting piece is provided with a first installation area and a second extension arm, and the buffer structure is located in the first installation area; wherein when the hinge is within a preset angle range, the third connecting piece conflicts with the buffer structure to form a buffer. The technical solution of the embodiment of the present application can increase the opening and closing angle and enhance the buffer effect during opening and closing.

Description

Technical Field

[0001] The present application relates to the technical field of furniture hardware, and in particular to a cup-shaped concealed hinge. Background Art

[0002] Furniture hardware accessories refer to metal products that play the role of connection, fixing, support, decoration, etc. in the process of furniture manufacturing and use. Hinge is a commonly used hardware accessory in traditional furniture, used to connect the cabinet body and cabinet door together. The existing hinges have a small opening and closing angle, and the buffering effect is poor during the opening and closing process, which is easy to cause noise and impact.

[0003] It should be noted that the above content is not necessarily prior art, nor is it intended to limit the scope of patent protection of this application. Utility Model Content

[0004] The embodiments of the present application provide a cup-shaped concealed hinge to solve or alleviate one or more of the technical problems mentioned above.

[0005] As one aspect of an embodiment of the present application, the embodiment of the present application provides a cup-shaped concealed hinge, comprising: a hinge arm, a connecting piece, a hinge cup and a buffer structure; the connecting piece is rotatably connected between the hinge arm and the hinge cup, and the hinge arm is provided with a first extension arm;

[0006] Wherein, the connecting member includes a first connecting member, a second connecting member, a third connecting member and a fourth connecting member;

[0007] The first end of the first connecting member is movably connected across the middle of the hinge arm;

[0008] The second connecting member is hinged between the second end of the first connecting member and the hinge cup;

[0009] The third connecting member has a first end movably connected to the end of the first extending arm;

[0010] The fourth connecting member is hinged between the second end of the third connecting member and the hinge cup;

[0011] The second connecting member and the third connecting member intersect and are hinged at the intersection;

[0012] Wherein, the second connecting member is provided with a first installation area and a second extending arm, and the buffer structure is located in the first installation area;

[0013] Wherein, when the hinge is within a preset angle range, the third connecting member conflicts with the buffer structure to form a buffer.

[0014] Optionally, the buffer structure includes a slide seat and a buffer;

[0015] The slide seat is fixed to the first installation area, and the slide seat is provided with a slideway with one end open;

[0016] The buffer is partially located in the slideway, and one end of the buffer extends out of the opening of the slideway.

[0017] Optionally, the buffer includes an oil cylinder and an oil rod;

[0018] The first end of the oil cylinder has an opening, and the second end has an inclined surface;

[0019] The first end of the oil cylinder is used to slidably mount the oil rod;

[0020] The second end of the oil cylinder serves as an end portion extending out of the slideway and is used to abut against the third connecting member within a preset angle range of the hinge.

[0021] Optionally, the buffer structure further comprises a fastener;

[0022] The fastener is arranged on the side wall at the opening of the slideway and partially extends into the slideway;

[0023] The outer wall of the oil cylinder is provided with a boss, and the boss is slidably located in the two side walls of the slideway;

[0024] When the oil cylinder slides to a predetermined position, the fastener abuts against the boss and limits the maximum stroke of the oil cylinder.

[0025] Optionally, two side walls of the first installation area are provided with protrusions that are recessed inwards, and the protrusions are used to fix the buffer structure.

[0026] Optionally, the third connecting member comprises a connected second installation area and a third extending arm, and two third extending arms are located on both sides of the same end of the second installation area;

[0027] The end of the second mounting area away from the third extending arm is hinged to the end of the first extending arm;

[0028] The end of the third extension arm is hinged to the hinge cup;

[0029] The third connecting member is provided with a spring structure, and the spring structure comprises a spring seat, a spring, a supporting portion and a spring pressure wheel;

[0030] The spring seat is fixed in the second installation area;

[0031] The spring is located in the spring seat, and the free telescopic end of the spring extends out of the spring seat;

[0032] The abutting portion has one end connected to the free telescopic end of the spring;

[0033] The spring pressure wheel is sleeved at the hinge between the third connecting member and the fourth connecting member, and fixed in the fourth connecting member;

[0034] Wherein, the other end of the abutting portion abuts against the wheel-shaped outer wall of the spring pressure wheel.

[0035] Optionally, the third connecting member and the fourth connecting member are hinged at different positions of the hinge cup.

[0036] Optionally, the connecting piece is hinged by means of rivets.

[0037] Optionally, a disassembly frame and an airfoil base are also included;

[0038] The disassembly frame is nested in the inner wall of the hinge arm, a first torsion spring and a bayonet are provided at the bottom of the front end of the disassembly frame, and a tail buckle is provided at the rear end;

[0039] A bulge is formed in the middle of the wing-shaped base and is located inside the disassembly frame;

[0040] Wherein, the first torsion spring conflicts with the bayonet pin, one end of the middle part of the airfoil base is limited by the bayonet pin, and the other end is buckled by the tail buckle.

[0041] Optionally, the tail buckle is provided with a second torsion spring, and the tail buckle and the second torsion spring are hinged to the end of the disassembly frame together.

[0042] The above technical solution adopted in the embodiment of the present application may have the following advantages:

[0043] In the cup-shaped concealed hinge provided by the embodiment of the present invention, when the hinge is within a preset angle range, the third connecting member conflicts with the buffer structure to form a buffer, thereby increasing the opening and closing angle and enhancing the buffering effect during opening and closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0045] Figure 1 It is a structural schematic diagram of the cup-shaped concealed hinge in the open state provided in an embodiment of the present application.

[0046] Figure 2 It is a cross-sectional view of the cup-shaped concealed hinge provided in an embodiment of the present application.

[0047] Figure 3 This is a diagram of the internal structure of the cup-shaped concealed hinge provided in an embodiment of the present application.

[0048] Figure 4 It is a structural schematic diagram of the second connecting member and the buffer structure provided in an embodiment of the present application.

[0049] Figure 5 It is a top view of a second connecting member provided in another embodiment of the present application.

[0050] Figure 6 It is a side view of a second connecting member provided in another embodiment of the present application.

[0051] Figure 7 It is a schematic diagram of the structure of the third connecting member and the fourth connecting member provided in the embodiment of the present application.

[0052] Figure 8 It is a schematic diagram of the structure of the hinge arm provided in an embodiment of the present application.

[0053] Fig. 9 It is a structural schematic diagram of the built-in buffer hinge provided in an embodiment of the present application in a state of not being completely closed.

[0054] Fig.10 It is a structural schematic diagram of the buffer structure in a non-fully closed state provided by an embodiment of the present application.

[0055] Fig.11 yes Fig.10 A magnified view of the structure at center.

[0056] Fig.12 It is a structural schematic diagram of the closed state provided in an embodiment of the present application.

[0057] Description of reference numerals:

[0058] 100, first connecting member; 200, second connecting member; 210, first installation area; 211, protrusion; 220, second extension arm; 300, third connecting member; 310, second installation area; 320, third extension arm; 330, spring structure; 331, spring seat; 332, spring; 333, abutment; 334, spring pressure wheel; 400, fourth connecting member; 500, buffer structure; 510, slide seat; 511, slideway; 520, buffer; 521, oil cylinder; 522, oil rod; 523, boss; 530, fastener; 600, hinge arm; 610, first extension arm; 620, disassembly frame; 621, first torsion spring; 622, bayonet; 623, tail buckle; 624, second torsion spring; 630, wing-shaped base; 700, hinge cup. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0060] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0061] The embodiment of the present application provides a cup-shaped concealed hinge technical solution. It mainly includes a hinge cup, a buffer and a hinge arm, and also includes a first connector, a second connector, a third connector and a fourth connector. The hinge cup is hinged to one end of the fourth connector, the other end of the fourth connector is hinged to one end of the third connector, the other end of the third connector is hinged to the hinge arm, and the other end of the second connector is hinged to the hinge arm. The buffer is arranged in the first connector and the end of the buffer is hinged to the third connector. The buffer is fixed with a slide seat and has a slideway inside. There are two fasteners with limit positions on both sides of the slide seat. The top rivet of the oil rod at the head of the buffer realizes the oil cylinder pressing into the start buffer. There are protrusions on both sides of the second connector to fix the slide seat. There are connecting rivet holes on both sides of the second connector. When the hinge is closed to 30-40 degrees, the inclined surface of the tail of the oil cylinder of the buffer conflicts with the third connector and presses into the start buffer. The housing of the buffer with a boss automatically resets when the hinge is opened, and the travel is limited by the fastener. This solution increases the opening and closing angle of the hinge and enhances the buffering effect during opening and closing. See below for details.

[0062] Hereinafter, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments can be implemented in many different forms and should not be construed as being limited to the embodiments described herein.

[0063] like Figures 1 to 12 As shown, the cup-shaped concealed hinge may include: a hinge arm 600 , a connecting piece, a hinge cup 700 and a buffer structure 500 ; in some embodiments, it may also include a disassembly frame 620 and an airfoil base 630 .

[0064] The connecting member is rotatably connected between the hinge arm 600 and the hinge cup 700, and the hinge arm 600 is provided with a first extension arm 610. The hinge cup 700 is fixed to the door / frame by a fixing member such as a bolt, and the hinge arm 600 is fixed to the frame / door by a wing-shaped base 630.

[0065] The connecting members include a first connecting member 100 , a second connecting member 200 , a third connecting member 300 and a fourth connecting member 400 .

[0066] The first end of the first connecting member 100 is movably connected to the middle of the hinge arm 600. The hinge connection between the first connecting member 100 and the hinge arm 600 can be realized through the through hole at the first end of the first connecting member 100, the corresponding hole in the middle of the hinge arm 600, and the rivet.

[0067] The second connecting member 200 is hinged between the second end of the first connecting member 100 and the hinge cup 700. The second connecting member 200 is inserted into the corresponding hole by means of a rivet to realize the hinge connection between the second end of the first connecting member 100 and the hinge cup 700.

[0068] The first end of the third connecting member 300 is movably connected to the end of the first extending arm 610 .

[0069] The fourth connecting member 400 is hinged between the second end of the third connecting member 300 and the hinge cup 700. The fourth connecting member 400 is inserted into the corresponding hole through the rivet to realize the hinge connection between the second end of the third connecting member 300 and the hinge cup 700.

[0070] The second connecting member 200 and the third connecting member 300 intersect and are hinged at the intersection.

[0071] The second connecting member 200 is provided with a first installation area 210 and a second extending arm 220, and the buffer structure 500 is located in the first installation area 210. The third connecting member 300 passes through a passage formed by the two second extending arms 220.

[0072] When the hinge is within the preset angle range, the third connector 300 contacts the buffer structure 500 to form a buffer. Under the damping force of the buffer structure 500, the first connector 100 slows down the movement speed of the hinge, absorbs and transforms the movement energy, and reduces vibration and noise.

[0073] The hinge cup 700 has a cup-shaped receiving portion. The second connecting member 200 and the fourth connecting member 400 are hinged at two ends of the cup-shaped receiving portion, respectively.

[0074] If the hinge cup 700 is installed on the door, during the door closing process, the angle between the fourth connecting member 400 and the third connecting member 300 gradually decreases, driving the third connecting member 300 and the second connecting member 200 to rotate around their hinge; when the third connecting member 300 and the second connecting member 200 rotate around their hinge at a certain angle, the outer wall of the third connecting member 300 contacts the buffer structure 500 located on the second connecting member 200. When the rotation continues, the buffer structure 500 is compressed, forming a damping force to resist the continued rotation of the second connecting member 200, thereby slowing down the rotation speed of the second connecting member 200. During the compression of the buffer structure 500, since the buffer structure 500 is fixed on the second connecting member 200, the second connecting member 200 is also pushed by the third connecting member 300 through the buffer structure 500 (the change of the pushing force is relatively gentle, and the impact force is absorbed by the buffer structure 500), and the pushing force drives the second connecting member 200 to swing, and the second connecting member 200 then drives the first connecting member 100 to rotate. It should be noted that if the hinge arm 600 is installed on the door, the door closing process can be pushed in the same way.

[0075] In this embodiment, Figure 9-11 When the hinge is closed to a state of 30-40°, the third connecting member 300 and the buffer structure 500 begin to conflict with each other to form a buffer, thereby increasing the opening and closing angle and enhancing the buffering effect during opening and closing.

[0076] In an optional embodiment, the buffer structure 500 includes a slide seat 510 and a buffer 520 .

[0077] The slide seat 510 is fixed to the first installation area 210, and the slide seat 510 is provided with a slideway 511 with an open end. The design of the open slideway 511 allows the buffer 520 to slide in the slideway 511. At the same time.

[0078] The buffer 520 is partially located in the slideway 511, and one end of the buffer 520 extends out of the opening of the slideway 511. At a preset angle, the extended portion of the buffer 520 can contact the third connecting member 300, so that the buffer 520 can start the buffering function in time.

[0079] In this embodiment, the buffer 520 can move on a correct track through the guidance of the slide 510. The buffer 520 reduces the speed of the moving parts and absorbs shock and vibration through its internal damping mechanism, thereby achieving an effective buffering effect.

[0080] In an optional embodiment, the buffer 520 includes an oil cylinder 521 and an oil rod 522 .

[0081] The first end of the oil cylinder 521 has an opening, and the second end has an inclined surface. The opening of the oil cylinder 521 allows the oil rod 522 to slide in the oil cylinder 521. The design of the inclined surface can make the third connecting member 300 and the oil cylinder 521 contact better.

[0082] The first end of the oil cylinder 521 is used to slidably mount the oil rod 522. The second end of the oil cylinder 521 is used as the end extending out of the slideway 511, and is used to contact the third connecting member 300 within the preset angle range of the hinge. When the oil cylinder 521 is acted upon by an external force, the oil cylinder 521 and the oil rod 522 move relative to each other, and the damping effect is achieved through the flow of the fluid medium in the oil cylinder 521 and the pressure change.

[0083] In this embodiment, the inclined surface structure of the oil cylinder 521 can make the oil cylinder 521 bear force better. When the oil rod 522 slides in the oil cylinder 521, a damping force is generated through the fluid medium to form a buffer.

[0084] In an optional embodiment, the buffer structure 500 further includes a fastener 530 .

[0085] The fastener 530 is disposed on the side wall of the opening of the slideway 511 and partially extends into the slideway 511. The fastener 530 is a rivet and is fixed through the mounting holes on both sides of the slideway 511.

[0086] The outer wall of the oil cylinder 521 is provided with a boss 523, and the boss 523 is slidably located in the two side walls of the slideway 511. The boss 523 is used to cooperate with the fastener 530.

[0087] When the oil cylinder 521 slides to a predetermined position, the fastener 530 abuts against the boss 523 and limits the maximum stroke of the oil cylinder 521 .

[0088] In this embodiment, the fastener 530 partially extends into the slide 511 and cooperates with the boss 523 to limit the movement of the cylinder 521. The boss 523 is located in the two side walls of the slide 511, so that the cylinder 521 remains stable during the sliding process and avoids shaking or deviation, thereby optimizing the buffering effect and improving the overall reliability and service life of the buffer system.

[0089] In an optional embodiment, two side walls of the first installation area 210 are provided with inwardly recessed protrusions 211, and the protrusions 211 are used to fix the buffer structure 500. The protrusions 211 may be a cuboid, and the protrusions 211 are located below the slide seat 510.

[0090] In this embodiment, the buffer structure 500 can be firmly fixed in the first installation area 210 through the protrusion 211, providing stable support and reducing vibration and displacement during operation.

[0091] In an optional embodiment, the third connecting member 300 includes a second installation area 310 and a third extending arm 320 that are connected, and two third extending arms 320 are located on both sides of the same end of the second installation area 310 .

[0092] The end of the second mounting area 310 away from the third extending arm 320 is hinged to the end of the first extending arm 610 . The end of the third extending arm 320 is hinged to the hinge cup 700 .

[0093] The third connecting member 300 is provided with a spring structure 330 , and the spring structure 330 includes a spring seat 331 , a spring 332 , a resisting portion 333 and a spring pressure wheel 334 .

[0094] The spring seat 331 is fixed in the second installation area 310, and can provide a stable installation base for the spring 332. The spring seat 331 is hinged with the second connecting member 200 and the third connecting member 300 at the intersection and at the intersection.

[0095] The spring 332 is located in the spring seat 331, and the free telescopic end of the spring 332 extends out of the spring seat 331. The spring 332 is used to provide elastic force.

[0096] One end of the abutting portion 333 is connected to the free telescopic end of the spring 332. The abutting portion 333 is used to transmit the elastic force of the spring.

[0097] The spring pressure wheel 334 is sleeved at the hinge between the third connecting member 300 and the fourth connecting member 400, and is fixed in the fourth connecting member 400. The other end of the abutting portion 333 abuts against the wheel-shaped outer wall of the spring pressure wheel 334 to form a force transmission system.

[0098] The other end of the abutting portion 333 abuts against the wheel-shaped outer wall of the spring pressure wheel 334. When the third connecting member 300 and the fourth connecting member 400 move relative to each other, the spring pressure wheel 334 drives the wheel-shaped portion of the spring pressure wheel 334 to rotate, and further drives the abutting portion 333 to move along the axial direction of the spring 332.

[0099] In this embodiment, the design of the spring structure 330 can provide better buffering for the hinge, provide the hinge with restoring power, and enhance the stability of the system.

[0100] In an optional embodiment, the third connecting member 300 and the fourth connecting member 400 are hinged at different positions of the hinge cup 700. The two are hinged at different positions so that the third hinge member 300 and the fourth connecting member 400 will not interfere with each other when the hinge is opened and closed.

[0101] In an optional embodiment, the connectors are hinged by means of rivets. The rivets are passed through the alignment holes at the hinges of the connectors to provide connection between the connectors, so that the connectors can rotate on the axis of the rivets.

[0102] In an optional embodiment, a disassembly frame 620 and an airfoil base 630 are further included.

[0103] The disassembly frame 620 is nested in the inner wall of the hinge arm 600 , and a first torsion spring 621 and a latch 622 are provided at the front bottom of the disassembly frame 620 , and a tail buckle 623 is provided at the rear end. The first torsion spring 621 provides an elastic clamping force for fixing the wing-shaped base 630 .

[0104] A protrusion is formed in the middle of the airfoil base 630 and is located inside the disassembly frame 620. The protrusion formed in the middle of the airfoil base 630 makes it more convenient for the disassembly frame 620 to clamp the airfoil base 630.

[0105] The first torsion spring 621 is in conflict with the bayonet 622, and one end of the middle of the airfoil base 630 is limited by the bayonet 622, and the other end is buckled by the tail buckle 623. One end of the middle of the airfoil base 630 is limited by the bayonet 622 to ensure that it is fixed in the correct position. The other end of the airfoil base 630 is buckled by the tail buckle 623 to provide additional fixing force to prevent it from loosening or shifting.

[0106] In this embodiment, the structural design of the disassembly frame 620 and the airfoil base 630 enables the disassembly frame 620 to fix the airfoil base 630, simplifies the installation and disassembly of the airfoil base 630, and facilitates the maintenance and replacement of the airfoil base 630.

[0107] In an optional embodiment, the tail buckle 623 is provided with a second torsion spring 624, and the tail buckle 623 and the second torsion spring 624 are hinged to the end of the disassembly frame 620. The second torsion spring 624 is provided to enable the tail buckle 623 to have the functions of elastic fixing and automatic return.

[0108] The difference from the above embodiment is that, Figure 5 , 6 As shown, the second connecting member 200 of the cup-shaped concealed hinge can also reduce the bending parts to make the processing easier, and can make the structure of the second connecting member 200 simpler and more beautiful.

[0109] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0110] For the convenience of description, the orientation or position relationship indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom" is usually based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Therefore, the exemplary term "above..." can include both "above..." and "below..." orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here are interpreted accordingly.

[0111] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0112] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0113] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0114] It should also be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0115] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0116] It should also be noted that the above are only preferred embodiments of the present application, and the patent protection scope of the present application is not limited thereto. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A cup-shaped concealed hinge, characterized in that: include: A hinge arm (600), a connecting piece, a hinge cup (700) and a buffer structure (500); the connecting piece is rotatably connected between the hinge arm (600) and the hinge cup (700), and the hinge arm (600) is provided with a first extending arm (610); Wherein, the connecting piece comprises a first connecting piece (100), a second connecting piece (200), a third connecting piece (300) and a fourth connecting piece (400); The first end of the first connecting member (100) is movably connected across the middle of the hinge arm (600); The second connecting member (200) is hinged between the second end of the first connecting member (100) and the hinge cup (700); The third connecting member (300) has a first end movably connected to the end of the first extending arm (610); The fourth connecting member (400) is hinged between the second end of the third connecting member (300) and the hinge cup (700); The second connecting member (200) and the third connecting member (300) intersect and are hinged at the intersection; Wherein, the second connecting member (200) is provided with a first installation area (210) and a second extending arm (220), and the buffer structure (500) is located in the first installation area (210); Wherein, when the hinge is within a preset angle range, the third connecting member (300) and the buffer structure (500) are in conflict with each other to form a buffer.

2. The cup-shaped concealed hinge according to claim 1, characterized in that: The buffer structure (500) comprises a sliding seat (510) and a buffer (520); The slide seat (510) is fixed to the first installation area (210), and the slide seat (510) is provided with a slideway (511) with one end open; The buffer (520) is partially located in the slideway (511), and one end of the buffer (520) extends out of the opening of the slideway (511).

3. The cup-shaped concealed hinge according to claim 2, characterized in that: The buffer (520) comprises an oil cylinder (521) and an oil rod (522); The oil cylinder (521) has an opening at a first end and an inclined surface at a second end; The first end of the oil cylinder (521) is used to slidably mount the oil rod (522); The second end of the oil cylinder (521) serves as the end extending out of the slideway (511) and is used to abut against the third connecting member (300) within a preset angle range of the hinge.

4. The cup-shaped concealed hinge according to claim 3, characterized in that: The buffer structure (500) further includes a fastener (530); The fastener (530) is arranged on the side wall at the opening of the slideway (511) and partially extends into the slideway (511); The outer wall of the oil cylinder (521) is provided with a boss (523), and the boss (523) is slidably located in the two side walls of the slideway (511); When the oil cylinder (521) slides to a predetermined position, the fastener (530) abuts against the boss (523) and limits the maximum stroke of the oil cylinder (521).

5. The cup-shaped concealed hinge according to claim 1, characterized in that: The two side walls of the first installation area (210) are provided with protrusions (211) which are recessed inwards, and the protrusions (211) are used to fix the buffer structure (500).

6. The cup-shaped concealed hinge according to claim 1, characterized in that: The third connecting member (300) comprises a connected second installation area (310) and a third extending arm (320), wherein the two third extending arms (320) are located on both sides of the same end of the second installation area (310); An end of the second mounting area (310) away from the third extending arm (320) is hinged to the end of the first extending arm (610); The end of the third extending arm (320) is hinged to the hinge cup (700); The third connecting member (300) is provided with a spring structure (330), and the spring structure (330) comprises a spring seat (331), a spring (332), a resisting portion (333) and a spring pressure wheel (334); The spring seat (331) is fixed in the second installation area (310); The spring (332) is located in the spring seat (331), and the free telescopic end of the spring (332) extends out of the spring seat (331); The abutting portion (333) has one end connected to the free telescopic end of the spring (332); The spring pressure wheel (334) is sleeved at the hinge between the third connecting member (300) and the fourth connecting member (400), and is fixed in the fourth connecting member (400); Wherein, the other end of the abutting portion (333) abuts against the wheel-shaped outer wall of the spring pressure wheel (334).

7. The cup-shaped concealed hinge according to claim 1, characterized in that: The third connecting member (300) and the fourth connecting member (400) are hinged at different positions of the hinge cup (700).

8. The cup-shaped concealed hinge according to claim 1, characterized in that: The connecting piece is hinged by means of rivets.

9. The cup-shaped concealed hinge according to claim 1, characterized in that: Also included is a disassembly frame (620) and an airfoil base (630); The disassembly frame (620) is nested in the inner wall of the hinge arm (600); a first torsion spring (621) and a bayonet (622) are provided at the bottom of the front end of the disassembly frame (620); and a tail buckle (623) is provided at the rear end; A protrusion is formed in the middle of the wing-shaped base (630) and is located inside the disassembly frame (620); The first torsion spring (621) is in conflict with the bayonet (622), one end of the middle part of the wing-shaped base (630) is limited by the bayonet (622), and the other end is buckled by the tail buckle (623).

10. The cup-shaped concealed hinge according to claim 9, characterized in that: The tail buckle (623) is provided with a second torsion spring (624), and the tail buckle (623) and the second torsion spring (624) are hinged to the end of the disassembly frame (620) together.

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