Cup-shaped dark hinge

Abstract

The embodiment of the present application provides a cup-shaped concealed hinge, which comprises a hinge cup, a hinge arm, a connecting piece and a buffer assembly; the connecting piece is rotatably connected between the hinge cup and the hinge arm; wherein the connecting piece comprises a first connecting piece, one end of which is hingedly connected to the end of the hinge arm away from the hinge cup, and the other end is hingedly connected to a second connecting piece; the second connecting piece is connected between the first connecting piece and the hinge cup; a third connecting piece is in a bent shape, one end of which is hingedly connected to the end of the hinge arm close to the hinge cup, and the other end is hingedly connected to a fourth connecting piece, and the bent part of the third connecting piece is hingedly connected to the second connecting piece; the fourth connecting piece is connected between the third connecting piece and the hinge cup; wherein the buffer assembly is externally arranged on the second connecting piece, and is used for slowing down the rotation speed of the third connecting piece. The embodiment of the present application improves the opening and closing angle of the cup-shaped concealed hinge, and enhances the buffering effect when the cup-shaped concealed hinge is opened and closed.

Description

Technical Field

[0001] This invention relates to cup-shaped concealed hinges for furniture hardware. Background Technology

[0002] Cup-shaped concealed hinges typically consist of a hinge cup, connecting plate, hinge arm, base, fastening screw, and adjusting screw. As a commonly used furniture hardware component, these cup-shaped concealed hinges are installed between lightweight cabinet doors and door frames, allowing the door to rotate relative to the frame. However, existing cup-shaped concealed hinges suffer from a small opening angle and poor cushioning effect. Summary of the Invention

[0003] The purpose of this invention is to provide a cup-shaped concealed hinge that can solve the problems of small opening and closing angle and poor buffering effect of existing cup-shaped concealed hinges.

[0004] One aspect of the present invention provides a cup-shaped concealed hinge, comprising:

[0005] Hinge cup, hinge arm, connector, and buffer assembly;

[0006] The connector is rotatably connected between the hinge cup and the hinge arm;

[0007] The connectors include a first connector, a second connector, a third connector, and a fourth connector.

[0008] The first connector has one end hinged to the end of the hinge arm away from the hinge cup, and the other end hinged to the second connector;

[0009] The second connector is connected between the first connector and the hinge cup;

[0010] The third connector is bent, with one end hinged to the end of the hinge arm near the hinge cup, and the other end hinged to the fourth connector. The bent part of the third connector is hinged to the second connector.

[0011] The fourth connector is linked between the third connector and the hinge cup;

[0012] The buffer component is externally mounted on the second connector to slow down the rotation speed of the third connector.

[0013] Optionally, the second connector includes:

[0014] A buffer base, comprising a base plate and base side plates located on both sides of the base plate; the side of the base plate near the hinge arm and the base side plates form an accommodating space for accommodating the first connector and the hinge arm; the side of the base plate away from the hinge arm is used to fix the buffer assembly; and

[0015] The extension arm is fixedly connected at one end to the side plate of the base and hinged at the other end to the hinge cup.

[0016] Optionally, the base side plate is provided with a first convex wing hole at the end away from the extension arm, and the second connector is hinged to the first connector through the first convex wing hole via a first rotating shaft;

[0017] The base side plate has a second convex wing hole at one end near the extension arm; the second connector is hinged to the bend of the third connector by passing through the second convex wing hole via a second rotating shaft.

[0018] Optionally, the buffer component includes:

[0019] Buffer bracket, buffer mounting bracket and buffer body;

[0020] The bottom of the buffer bracket is provided with an outwardly extending first locking foot; the tail of the buffer bracket is provided with an inwardly extending second locking foot.

[0021] The base plate is provided with a first slot for engaging the first locking foot and a second slot for engaging the second locking foot;

[0022] The buffer bracket is fixedly connected to the base plate by the first latch and the second latch respectively, and forms a fixing bracket receiving cavity with the base plate for accommodating the buffer fixing bracket;

[0023] The buffer mounting bracket is provided with a buffer receiving cavity for accommodating the buffer body;

[0024] The buffer body is disposed in the buffer receiving cavity, with one end abutting against the side wall of the second locking foot, and the other end extending out of the buffer bracket abutting against the side of the third connector near the bend.

[0025] Optionally, the buffer body further includes:

[0026] Buffer cylinder and buffer rod;

[0027] The buffer rod has a piston at one end that extends into the buffer cylinder, and the piston is elastically connected to the buffer cylinder through a buffer spring. The other end has a plastic sleeve that extends out of the buffer cylinder.

[0028] The third connector has a groove on its side near the bend, and the buffer oil rod abuts against the groove through the plastic sleeve.

[0029] When the third connector rotates, it squeezes the plastic sleeve through the groove, causing the buffer spring to deform, thereby activating the buffer assembly under the spring force.

[0030] Optionally, the buffer component further includes:

[0031] The buffer outer cover and the base plate form a support cavity for accommodating the buffer bracket;

[0032] The bottom of the side wall of the buffer cover is provided with a locking block; the side plate of the base is provided with a slot for engaging the locking block;

[0033] The outer cover of the buffer is fixedly connected to the buffer base by a locking block that snaps into the slot.

[0034] Optionally, the hinge cup includes:

[0035] Hinge cup side wings and hinge cup cavity;

[0036] The hinge cup side wing arm is provided with a hinge cup fixing hole, and the hinge cup is connected to the first arm surface through the hinge cup fixing member passing through the hinge cup fixing hole;

[0037] The hinge cup cavity has a first concave cavity and a second concave cavity at both ends inside;

[0038] The first concave cavity is used to accommodate the extension arm, and the second concave cavity is used to accommodate the extension of the fourth connector;

[0039] The hinge cup is rotatably connected to the second connector via a third rotating shaft passing through the first concave cavity and the extension arm; the hinge cup is rotatably connected to the fourth connector via a fourth rotating shaft passing through the second concave cavity and the extension of the fourth connector.

[0040] Optionally, the connector further includes:

[0041] Fifth connector;

[0042] The fifth connector has one end hinged to the end of the hinge arm near the hinge cup, and the other end hinged to the bend of the third connector.

[0043] Optionally, the hinge arm includes:

[0044] Hinge arm base and hinge arm body;

[0045] The hinge arm base includes a hinge arm side wing, and the wing arm of the hinge arm side wing is provided with a first fixing hole and a first adjusting hole. The top of the hinge arm body is provided with a second fixing hole and a second adjusting hole.

[0046] The hinge base is connected to the second arm surface through the first fixing member passing through the first fixing hole, and through the first adjusting member passing through the first adjusting hole to adjust the relative position of the hinge cup and the second arm surface in the first direction;

[0047] The hinge arm body is connected to the hinge arm base through the second fixing member passing through the second fixing hole, and the relative position of the hinge arm and the second arm surface in the second direction is adjusted through the second adjusting member passing through the second adjusting hole.

[0048] Optionally, the top of the hinge arm body is also provided with a connecting eave;

[0049] The connecting eaves are provided with an eaves hole, and the hinge arm is hinged to the first connecting member through the eaves hole via the fifth rotating shaft;

[0050] The side wing of the hinge arm body is provided with a second fixing hole and a second adjusting hole;

[0051] The hinge arm is hinged to the third connector via a sixth rotating shaft passing through the second fixing hole, wherein the end of the third connector away from the second fixing hole is hinged to the fourth connector via a seventh rotating shaft;

[0052] The hinge arm is hinged to the fifth connector via the eighth rotating shaft passing through the second adjusting hole. The end of the fifth connector away from the second adjusting hole is coaxially hinged to both the second connector and the third connector at the bend of the third connector via the second rotating shaft.

[0053] The cup-shaped concealed hinge provided in this embodiment of the invention improves the opening and closing angle of the cup-shaped concealed hinge by cooperating with the first connector and the second connector, as well as cooperating with the third connector and the fourth connector, thus solving the problem of the small opening and closing angle of the existing cup-shaped concealed hinge. Furthermore, by placing an external buffer component on the second connector, the buffering effect of the cup-shaped concealed hinge during opening and closing is enhanced, thus solving the problem of the poor buffering effect of the existing cup-shaped concealed hinge. Attached Figure Description

[0054] Figure 1 This schematic diagram illustrates the overall shape of the cup-shaped concealed hinge in this embodiment.

[0055] Figure 2 A schematic diagram of the buffer component of the cup-shaped dark hinge in this embodiment is shown.

[0056] Figure 3 A schematic diagram of some connecting parts of the cup-shaped concealed hinge in this embodiment is shown.

[0057] Figure 4A schematic diagram of the hinge cup of the cup-shaped concealed hinge in this embodiment is shown.

[0058] Figure 5 A schematic diagram of the hinge arm of the cup-shaped concealed hinge in this embodiment is shown.

[0059] Figure 6 A schematic diagram of the fourth connector of the cup-shaped concealed hinge in this embodiment is shown.

[0060] Figure 7 A perspective view of the cup-shaped concealed hinge of this embodiment is shown schematically.

[0061] Figure 8 The schematic diagram illustrates the closed state of the cup-shaped concealed hinge in this embodiment;

[0062] Figure 9 The schematic diagram illustrates the open state of the cup-shaped concealed hinge in this embodiment;

[0063] Figure 10 A schematic diagram of the cup-shaped concealed hinge of this embodiment is shown. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0065] It should be noted that the descriptions involving "first," "second," etc., in the embodiments of the present invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0066] It should be noted that the cup hinges protected by this invention conform to and exceed the relevant definitions, requirements and inspection standards of the People's Republic of China Light Industry Standards QB / T1242-1991 and QBT2189-2013, and also conform to and exceed the relevant definitions, requirements and inspection standards of EU Standard 15570-2008.

[0067] The patented cup-shaped concealed hinge will be described exemplarily below through embodiments.

[0068] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. It should be understood that these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein.

[0069] like Figure 1-10 As shown, in this embodiment, the cup-shaped concealed hinge includes:

[0070] Hinge cup 1000, the hinge cup 1000 includes: hinge cup side wings 1100 and hinge cup cavity 1200;

[0071] The hinge arm 2000 includes: a hinge arm base 2100 and a hinge arm body 2200;

[0072] The connector includes: a first connector 3100, a second connector 3200, a third connector 3300, a fourth connector 3400, and a fifth connector 3500;

[0073] The buffer assembly 4000 includes: a buffer bracket 4100, a buffer fixing bracket 4200, a buffer body 4300, and a buffer outer cover 4400.

[0074] Rotating shaft 5000, wherein the rotating shaft 5000 comprises: a first rotating shaft 5100, a second rotating shaft 5200, a third rotating shaft 5300, a fourth rotating shaft 5400, a fifth rotating shaft 5500, a sixth rotating shaft 5600, a seventh rotating shaft 5700, and an eighth rotating shaft 5800.

[0075] In this embodiment, the connector is rotatably connected between the hinge cup 1000 and the hinge arm 2000;

[0076] The connectors include a first connector 3100, a second connector 3200, a third connector 3300, and a fourth connector 3400.

[0077] The first connector 3100 has one end hinged to the end of the hinge arm 2000 away from the hinge cup 1000, and the other end hinged to the second connector 3200;

[0078] The second connector 3200 is connected between the first connector 3100 and the hinge cup 1000;

[0079] The third connector 3300 is bent, with one end hinged to the end of the hinge arm 2000 near the hinge cup 1000, and the other end hinged to the fourth connector 3400. The bent part of the third connector 3300 is hinged to the second connector 3200.

[0080] The fourth connector 3400 is connected between the third connector 3300 and the hinge cup 1000;

[0081] The buffer component 4000 is externally mounted on the second connector 3200 to slow down the rotation speed of the third connector 3300.

[0082] In this embodiment, the second connector 3200 includes a buffer base 3210 and an extension arm 3220. The buffer base 3210 includes a base plate 3230 and base side plates 3240 located on both sides of the base plate 3230. The side of the base plate 3230 near the hinge arm 2000 and the base side plate 3240 form an accommodating space for accommodating the first connector 3100 and the hinge arm 2000. The side of the base plate 3230 away from the hinge arm 2000 is used to fix the buffer assembly 4000. One end of the extension arm 3220 is fixedly connected to the base side plate 3240, and the other end is hinged to the hinge cup 1000.

[0083] In this embodiment, the base side plate 3240 is provided with a first convex wing hole 3241 at one end away from the extension arm 3220, and the second connector 3200 is hinged to the first connector 3100 through the first convex wing hole 3241 via a first rotating shaft 5100; the base side plate 3240 is provided with a second convex wing hole 3242 at one end near the extension arm 3220; the second connector 3200 is hinged to the bend of the third connector 3300 through the second convex wing hole 3242 via a second rotating shaft 5200.

[0084] In this embodiment, the buffer assembly 4000 includes: a buffer bracket 4100, a buffer fixing frame 4200, and a buffer body 4300; the bottom of the buffer bracket 4100 is provided with an outwardly extending first locking foot 4101; the tail of the buffer bracket 4100 is provided with an inwardly extending second locking foot 4102; the base plate 3230 is provided with a first locking slot 3231 for engaging the first locking foot 4101 and a second locking slot 3232 for engaging the second locking foot 4102; the buffer bracket 4100 is connected by the first locking foot 4101 and the second locking foot 4102. 2. The first latch 3231 and the second latch 3232 are respectively inserted into the base plate 3230 and fixedly connected to it, forming a mounting cavity for accommodating the buffer mounting bracket 4200; the buffer mounting bracket 4200 is provided with a buffer accommodating cavity for accommodating the buffer body 4300; wherein, the buffer body 4300 is disposed in the buffer accommodating cavity, and one end abuts against the side wall of the second latch 4102, and the other end extends out of the buffer bracket 4100 and abuts against the side of the third connector 3300 near the bend.

[0085] In this embodiment, the buffer body 4300 includes a buffer cylinder 4310 and a buffer rod 4320. One end of the buffer rod 4320 has a piston (not shown in the example diagram) extending into the buffer cylinder 4310, which is elastically connected to the buffer cylinder 4310 via a buffer spring (not shown in the example diagram). The other end has a plastic sleeve 4321 extending out of the buffer cylinder 4310. The third connecting member 3300 has a groove 3301 on its side near the bend, and the buffer rod abuts against the groove via the plastic sleeve. When the third connecting member 3300 rotates, it squeezes the plastic sleeve 4321 through the groove 3301, causing the buffer spring to deform, thereby activating the buffer body 4300 under the spring force of the buffer spring.

[0086] In this embodiment, the buffer assembly 4000 further includes: a buffer outer cover 4400, the buffer outer cover 4400 and the base plate 3230 forming a support cavity for accommodating the buffer bracket 4100; a locking block 4401 is provided inwardly at the bottom of the side wall of the buffer outer cover 4400; the base side plate 3240 is provided with a slot 3243 for locking the locking block 4401; the buffer outer cover 4400 is fixedly connected to the buffer base 3210 by locking the locking block 4401 into the slot 3243.

[0087] In this embodiment, the hinge cup 1000 includes: a hinge cup side wing 1100 and a hinge cup cavity 1200; the wing arm of the hinge cup side wing 1100 is provided with a hinge cup fixing hole 1101, and the hinge cup 1000 is connected to the first arm surface through the hinge cup fixing hole 1101 via a hinge cup fixing member 1102; the hinge cup cavity 1200 has a first concave cavity 1210 and a second concave cavity 1220 at both ends; the first concave cavity 1210 is used to accommodate the extension arm 3220, and the... The second concave cavity 1220 is used to accommodate the extension 3401 of the fourth connector 3400; wherein, the hinge cup 1000 is rotatably connected to the second connector 3200 via a third rotating shaft 5300 passing through the first concave cavity 1210 and the extension arm 3220; the hinge cup 1000 is rotatably connected to the fourth connector 3400 via a fourth rotating shaft 5400 passing through the second concave cavity 1220 and the extension 3401 of the fourth connector 3400.

[0088] In this embodiment, the connector further includes a fifth connector 3500; one end of the fifth connector 3500 is hinged to the end of the hinge arm 2000 near the hinge cup 1000, and the other end is hinged to the bend of the third connector 3300.

[0089] In this embodiment, the hinge arm 2000 includes a hinge arm base 2100 and a hinge arm body 2200. The hinge arm base 2100 includes a hinge arm side wing 2110, and a first fixing hole 2111 and a first adjusting hole 2112 are distributed on the wing arm of the hinge arm side wing 2110. The top of the hinge arm body 2200 is provided with a second fixing hole 2201 and a second adjusting hole 2202. The hinge arm base 2100 is connected to the second arm surface through a first fixing member 2113 passing through the first fixing hole 2111, and through a first adjusting member 2114 passing through the first adjusting hole 2112 to adjust the relative position of the hinge cup 1000 and the second arm surface in a first direction. The hinge arm body 2200 is connected to the hinge arm base 2100 through a second fixing member 2203 passing through the second fixing hole 2201, and through a second adjusting member 2204 passing through the second adjusting hole 2202 to adjust the relative position of the hinge arm 2000 and the second arm surface in a second direction.

[0090] In this embodiment, the top of the hinge arm body 2200 is further provided with a connecting eave 2210; the connecting eave 2210 is provided with an eave hole 2211, and the hinge arm 2000 is hinged to the first connecting member 3100 through the eave hole 2211 via a fifth rotating shaft 5500; the side wings of the hinge arm body 2200 are provided with a second fixing hole 2201 and a second adjusting hole 2202; the hinge arm 2000 is hinged to the third connecting member 3300 through the second fixing hole 2201 via a sixth rotating shaft 5600, wherein the third connecting member... One end of connector 3300 away from the second fixing hole 2201 is hinged to the fourth connector 3400 via the seventh rotating shaft 5700; the hinge arm 2000 passes through the second adjusting hole 2202 via the eighth rotating shaft 5800 and is hinged to the fifth connector 3500, wherein one end of the fifth connector 3500 away from the second adjusting hole 2202 is coaxially hinged to both the second connector 3200 and the third connector 3300 at the bend of the third connector 3300 via the second rotating shaft 5200.

[0091] To make the embodiments of the present invention easier to understand, the installation and use process of the cup-shaped concealed hinge will be described below, in detail as follows.

[0092] like Figure 1-10 As shown, an embodiment of the present invention provides a cup-shaped concealed hinge, including a hinge cup 1000, a hinge arm 2000, a connector, a buffer assembly 4000, and a rotating shaft 5000, wherein: the connector is rotatably connected between the hinge cup 1000 and the hinge arm 2000.

[0093] The hinge cup 1000 includes a hinge cup side wing 1100 and a hinge cup cavity 1200; the wing arm of the hinge cup side wing 1100 is provided with a hinge cup fixing hole 1101, and the hinge cup 1000 is connected to the first arm surface through the hinge cup fixing hole 1101 via a hinge cup fixing member 1102. The first arm surface can be the arm surface of a wall, door panel, window, etc., that can accommodate a cup-shaped concealed hinge.

[0094] The hinge arm 2000 includes a hinge arm base 2100 and a hinge arm body 2200. The hinge arm base 2100 includes a hinge arm side wing 2110, and a first fixing hole 2111 and a first adjusting hole 2112 are distributed on the wing arm of the hinge arm side wing 2110. The top of the hinge arm body 2200 is provided with a second fixing hole 2201 and a second adjusting hole 2202. The hinge arm base 2100 is connected to the second arm surface through a first fixing member 2113 passing through the first fixing hole 2111, and through a first adjusting member 2114 passing through the first adjusting hole 2112, so as to adjust the relative position of the hinge cup 1000 and the second arm surface in a first direction. The hinge arm body 2200 is connected to the hinge arm base 2100 through a second fixing member 2203 passing through the second fixing hole 2201, and through a second adjusting member 2204 passing through the second adjusting hole 2202, so as to adjust the relative position of the hinge arm 2000 and the second arm surface in a second direction. In this embodiment, the hinge base 2100 is fixed to the second arm surface by the first fixing member 2113, and the hinge body 2200 is fixed to the hinge base 2100 by the second fixing member 2203. The second arm surface can be the arm surface of a wall, door panel, window, etc., where a cup-shaped concealed hinge can be installed. When adjusting the relative position of the hinge cup 1000 and the second arm surface in the first direction using the first adjusting member 2114, the first fixing member 2113 needs to be removed from the first fixing hole 2111. When adjusting the relative position of the hinge arm 2000 and the second arm surface in the second direction using the second adjusting member 2204, the second fixing member 2203 needs to be removed from the second fixing hole 2201.

[0095] The connecting components include a first connecting component 3100, a second connecting component 3200, a third connecting component 3300, and a fourth connecting component 3400, wherein: the first connecting component 3100 has one end hinged to the end of the hinge arm 2000 away from the hinge cup 1000, and the other end hinged to the second connecting component 3200; the second connecting component 3200 is connected between the first connecting component 3100 and the hinge cup 1000; the third connecting component 3300 is bent, with one end hinged to the end of the hinge arm 2000 near the hinge cup 1000, and the other end hinged to the fourth connecting component 3400, the bent portion of the third connecting component 3300 being hinged to the second connecting component 3200; the fourth connecting component 3400 is connected between the third connecting component 3300 and the hinge cup 1000; wherein, the buffer assembly 4000 is externally mounted on the second connecting component 3200 to reduce the rotational speed of the third connecting component 3300.

[0096] For example, the specific connection relationships of the hinge cup 1000, the hinge arm 2000, the connector, and the buffer assembly 4000 are as follows:

[0097] The first end of the first connector 3100 is connected to the hinge arm 2000. The top of the hinge arm body 2200 is also provided with a connecting eave 2210; the connecting eave 2210 is provided with an eave hole 2211, and the hinge arm 2000 is hinged to the first connector 3100 through the eave hole 2211 via a fifth rotating shaft 5500.

[0098] The second end of the first connector 3100 is connected to the first end of the second connector 3200, and the second end of the second connector 3200 is connected to the hinge cup 1000. The second connector 3200 includes a buffer base 3210 and an extension arm 3220. The buffer base 3210 includes a base plate 3230 and base side plates 3240 located on both sides of the base plate 3230. The side of the base plate 3230 near the hinge arm 2000 and the base side plate 3240 form an accommodating space for accommodating the first connector 3100 and the hinge arm 2000. The side of the base plate 3230 away from the hinge arm 2000 is used to fix the buffer assembly 4000. The end of the base side plate 3240 away from the extension arm 3220 is provided with a first convex wing hole 3241, and the second connector 3200 is hinged to the first connector 3100 through the first convex wing hole 3241 via a first rotating shaft 5100. Additionally, one end of the extension arm 3220 is fixedly connected to the base side plate 3240, and the other end is hinged to the hinge cup 1000. The hinge cup cavity 1200 has a first concave cavity 1210 inside; the first concave cavity 1210 is used to accommodate the extension arm 3220, and the hinge cup 1000 is rotatably connected to the second connector 3200 through the first concave cavity 1210 and the extension arm 3220 via a third rotating shaft 5300 passing through the first concave cavity 1210 and the extension arm 3220.

[0099] The first end of the third connector 3300 is connected to the hinge arm 2000. The hinge arm body 2200 has a second fixing hole 2201 and a second adjusting hole 2202 on its side. The hinge arm 2000 is hinged to the third connector 3300 through the second fixing hole 2201 via a sixth rotating shaft 5600.

[0100] The second end of the third connector 3300 is connected to the first end of the fourth connector 3400, and the second end of the fourth connector 3400 is connected to the hinge cup 1000. The end of the third connector 3300 furthest from the second fixing hole 2201 is hinged to the fourth connector 3400 via a seventh rotating shaft 5700. The hinge cup cavity 1200 also has a second concave cavity 1220; the second concave cavity 1220 is used to accommodate the extension 3401 of the fourth connector 3400; the hinge cup 1000 is rotatably connected to the fourth connector 3400 via the fourth rotating shaft 5400, which passes through the second concave cavity 1220 and the extension 3401 of the fourth connector 3400.

[0101] The connector further includes a fifth connector 3500. The fifth connector 3500 may also be an elastic element. For example, the material of the fifth connector 3500 may be an elastic material. The fifth connector 3500 may also have an inner cavity, in which a spring may be provided to increase the elasticity of the elastic element.

[0102] The fifth connector 3500 is hinged at one end to the end of the hinge arm 2000 near the hinge cup 1000, and at the other end to the bend of the third connector 3300. The hinge arm 2000 is hinged to the fifth connector 3500 via an eighth rotating shaft 5800 passing through the second adjusting hole 2202. The end of the fifth connector 3500 furthest from the second adjusting hole 2202 is coaxially hinged to both the second connector 3200 and the third connector 3300 via the second rotating shaft 5200 at the bend of the third connector 3300.

[0103] The buffer assembly 4000 is externally mounted on the second connector 3200 to slow down the rotation speed of the third connector 3300.

[0104] The buffer assembly 4000 includes: a buffer bracket 4100, a buffer fixing frame 4200, and a buffer body 4300; the bottom of the buffer bracket 4100 is provided with an outwardly extending first locking foot 4101; the tail of the buffer bracket 4100 is provided with an inwardly extending second locking foot 4102; the base plate 3230 is provided with a first locking slot 3231 for locking the first locking foot 4101 and a second locking slot 3232 for locking the second locking foot 4102; the buffer bracket 4100 is respectively secured by the first locking foot 4101 and the second locking foot 4102. The first latch 3231 and the second latch 3232 are fixedly connected to the base plate 3230, and together with the base plate 3230, form a mounting cavity for accommodating the buffer mounting bracket 4200; the buffer mounting bracket 4200 is provided with a buffer accommodating cavity for accommodating the buffer body 4300; wherein, the buffer body 4300 is disposed in the buffer accommodating cavity, and one end abuts against the side wall of the second latch 4102, and the other end extends out of the buffer bracket 4100 and abuts against the side of the third connector 3300 near the bend.

[0105] The buffer body 4300 includes a buffer cylinder 4310 and a buffer rod 4320. One end of the buffer rod 4320 has a piston (not shown in the example drawing) extending into the buffer cylinder 4310, which is elastically connected to the buffer cylinder 4310 via a buffer spring (not shown in the example drawing). The other end has a plastic sleeve 4321 extending out of the buffer cylinder 4310. The third connecting member 3300 has a groove 3301 on its side near the bend, and the buffer rod abuts against the groove via the plastic sleeve. When the third connecting member 3300 rotates, it squeezes the plastic sleeve 4321 through the groove 3301, causing the buffer spring to deform, thereby activating the buffer body 4300 under the spring force of the buffer spring.

[0106] The buffer assembly 4000 further includes: a buffer outer cover 4400, which forms a support cavity with the base plate 3230 for accommodating the buffer bracket 4100; a locking block 4401 is provided inwardly at the bottom of the side wall of the buffer outer cover 4400; the base side plate 3240 is provided with a slot 3243 for locking the locking block 4401; the buffer outer cover 4400 is fixedly connected to the buffer base 3210 by locking the locking block 4401 into the slot 3243.

[0107] This embodiment improves the opening and closing angle of the cup-shaped concealed hinge by cooperating with the first connector 3100 and the second connector 3200, as well as the third connector 3300 and the fourth connector 3400, thus solving the problem of the small opening and closing angle of the existing cup-shaped concealed hinge. Furthermore, by placing a buffer component 4000 on the second connector 3200, the buffering effect of the cup-shaped concealed hinge during opening and closing is enhanced, thus solving the problem of the poor buffering effect of the existing cup-shaped concealed hinge.

[0108] In an exemplary embodiment, the hinge cup 1000 can be mounted on a first arm surface (e.g., a door panel), and the hinge arm 2000 can be mounted on a second arm surface (e.g., a wall). When the first arm surface is pushed by an external force, the first arm surface will drive the hinge cup 1000, thereby causing the hinge cup 1000 to push the second connector 3200 and the fourth connector 3400 connected to the hinge cup 1000. Specifically, when the second connector 3200 is pushed, the second connector 3200 will move away from the hinge cup 1000 and push the first connector 3100, causing the first connector 3100 to rotate around the convex hole 2211 as an axis until one side of the first connector 3100 abuts against the hinge arm 2000. When the fourth connector 3400 is pushed, it pushes the third connector 3300, causing the third connector 3300 to rotate around the second fixing hole 2201 and move closer to the hinge arm 2000 until one side of the first connector 3100 abuts against the hinge arm 2000, at which point the third connector 3300 stops rotating. Furthermore, the middle part of the second connector 3200 and the bend of the third connector 3300 are rotatably connected via the second rotating shaft 5200, improving the stability of the connectors.

[0109] The above are merely preferred embodiments of the present invention and do not limit the scope of the invention. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A cup-shaped concealed hinge, characterized in that, include: Hinge cup, hinge arm, connector, and buffer assembly; The connector is rotatably connected between the hinge cup and the hinge arm; The connectors include a first connector, a second connector, a third connector, and a fourth connector. The first connector has one end hinged to the end of the hinge arm away from the hinge cup, and the other end hinged to the second connector; The second connector is connected between the first connector and the hinge cup; The third connector is bent, with one end hinged to the end of the hinge arm near the hinge cup, and the other end hinged to the fourth connector. The bent part of the third connector is hinged to the second connector. The fourth connector is linked between the third connector and the hinge cup; The buffer component is externally mounted on the second connector to slow down the rotation speed of the third connector; The second connector includes: The buffer base includes a base plate and base side plates located on both sides of the base plate; the side of the base plate near the hinge arm and the base side plates form an accommodating space for accommodating the first connector and the hinge arm. The side of the base plate away from the hinge arm is used to fix the buffer assembly; and The extension arm is fixedly connected at one end to the side plate of the base and hinged at the other end to the hinge cup; The buffer assembly includes a buffer bracket, a buffer fixing frame, and a buffer body; The buffer body also includes: Buffer cylinder and buffer rod; The buffer rod has a piston at one end that extends into the buffer cylinder, and the piston is elastically connected to the buffer cylinder through a buffer spring. The other end has a plastic sleeve that extends out of the buffer cylinder. The third connector has a groove on its side near the bend, and the buffer oil rod abuts against the groove through the plastic sleeve. When the third connector rotates, it squeezes the plastic sleeve through the groove, causing the buffer spring to deform, thereby activating the buffer assembly under the spring force.

2. The cup-shaped concealed hinge according to claim 1, characterized in that: The base side plate is provided with a first convex wing hole at the end away from the extension arm, and the second connector is hinged to the first connector through the first convex wing hole via a first rotating shaft; The base side plate has a second convex wing hole at one end near the extension arm; the second connector is hinged to the bend of the third connector by passing through the second convex wing hole via a second rotating shaft.

3. The cup-shaped concealed hinge according to claim 1, characterized in that, The bottom of the buffer bracket is provided with an outwardly extending first locking foot; the tail of the buffer bracket is provided with an inwardly extending second locking foot. The base plate is provided with a first slot for engaging the first locking foot and a second slot for engaging the second locking foot; The buffer bracket is fixedly connected to the base plate by the first latch and the second latch respectively, and forms a fixing bracket receiving cavity with the base plate for accommodating the buffer fixing bracket; The buffer mounting bracket is provided with a buffer receiving cavity for accommodating the buffer body; The buffer body is disposed in the buffer receiving cavity, with one end abutting against the side wall of the second locking foot, and the other end extending out of the buffer bracket abutting against the side of the third connector near the bend.

4. The cup-shaped concealed hinge according to claim 1 or 3, characterized in that, The buffer component also includes: The buffer outer cover and the base plate form a support cavity for accommodating the buffer bracket; The bottom of the side wall of the buffer cover is provided with a locking block; the side plate of the base is provided with a slot for engaging the locking block; The outer cover of the buffer is fixedly connected to the buffer base by a locking block that snaps into the slot.

5. The cup-shaped concealed hinge according to any one of claims 1 to 3, characterized in that, The hinge cup includes: Hinge cup side wings and hinge cup cavity; The hinge cup side wing arm is provided with a hinge cup fixing hole, and the hinge cup is connected to the first arm surface through the hinge cup fixing member passing through the hinge cup fixing hole; The hinge cup cavity has a first concave cavity and a second concave cavity at both ends inside; The first concave cavity is used to accommodate the extension arm, and the second concave cavity is used to accommodate the extension of the fourth connector; The hinge cup is rotatably connected to the second connector via a third rotating shaft passing through the first concave cavity and the extension arm; the hinge cup is rotatably connected to the fourth connector via a fourth rotating shaft passing through the second concave cavity and the extension of the fourth connector.

6. The cup-shaped concealed hinge according to claim 2, characterized in that, The connector also includes: Fifth connector; The fifth connector has one end hinged to the end of the hinge arm near the hinge cup, and the other end hinged to the bend of the third connector.

7. The cup-shaped concealed hinge according to claim 6, characterized in that, The hinge arm includes: Hinge arm base and hinge arm body; The hinge arm base includes a hinge arm side wing, and the wing arm of the hinge arm side wing is provided with a first fixing hole and a first adjusting hole. The top of the hinge arm body is provided with a second fixing hole and a second adjusting hole. The hinge base is connected to the second arm surface through the first fixing member passing through the first fixing hole, and through the first adjusting member passing through the first adjusting hole to adjust the relative position of the hinge cup and the second arm surface in the first direction; The hinge arm body is connected to the hinge arm base through the second fixing member passing through the second fixing hole, and the relative position of the hinge arm and the second arm surface in the second direction is adjusted by the second adjusting member passing through the second adjusting hole.

8. The cup-shaped concealed hinge according to claim 7, characterized in that: The top of the hinge arm body is also provided with a connecting eave; The connecting eaves are provided with an eaves hole, and the hinge arm is hinged to the first connecting member through the eaves hole via the fifth rotating shaft; The side wing of the hinge arm body is provided with a second fixing hole and a second adjusting hole; The hinge arm is hinged to the third connector via a sixth rotating shaft passing through the second fixing hole, wherein the end of the third connector away from the second fixing hole is hinged to the fourth connector via a seventh rotating shaft; The hinge arm is hinged to the fifth connector via the eighth rotating shaft passing through the second adjusting hole. The end of the fifth connector away from the second adjusting hole is coaxially hinged to both the second connector and the third connector at the bend of the third connector via the second rotating shaft.

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