Cup-shaped dark hinge

Abstract

The cup-shaped hidden hinge provided by the embodiment of the present application comprises a hinge arm, a connecting piece and a hinge cup; the connecting piece comprises a first connecting piece, a second connecting piece, a third connecting piece and a fourth connecting piece; the first connecting piece comprises a first slot body, a first extension, a sliding push block and an abutting structure; when the hinge cup and the hinge arm are within a first preset angle range, the sliding push block is pushed by the elastic force of the elastic member, the first connecting piece generates a rotary swing force, the first connecting piece, the third connecting piece and the fourth connecting piece are linked based on the rotary swing force, and the movement of the hinge cup is driven. The cup-shaped hidden hinge provided by the embodiment of the present application can push the sliding push block by the elastic force of the elastic member when the cup-shaped hidden hinge is at a predetermined angle, the pushing force drives the rotary swing of the second connecting piece, the rotary swing force of the second connecting piece drives the hinge cup to rotate and close in a mutual linkage mode through the first connecting piece, the third connecting piece and the fourth connecting piece, and the opening and closing effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a cup-shaped concealed hinge of furniture hardware. BACKGROUND

[0002] The cup-shaped concealed hinge is generally composed of a hinge cup, a connecting plate, a hinge arm, a base, a fastening screw and an adjusting screw. The cup-shaped concealed hinge is a commonly used furniture hardware, which is installed between a light cabinet door and a door frame, so that the door can rotate relative to the door frame. However, the inventor finds that the cup-shaped concealed hinge in the prior art has poor opening and closing effect. SUMMARY

[0003] The present application aims to provide a cup-shaped concealed hinge, which can solve the problem of poor opening and closing effect of the cup-shaped concealed hinge in the prior art.

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

[0005] a hinge arm, a connecting piece and a hinge cup;

[0006] the connecting piece is rotatably connected between the hinge cup and the hinge arm;

[0007] wherein the connecting piece comprises a first connecting piece, a second connecting piece, a third connecting piece and a fourth connecting piece:

[0008] the first connecting piece is hingedly connected at a first position of the hinge cup at a first end, and hingedly connected at a first end of the second connecting piece at a second end;

[0009] the second connecting piece is hingedly connected at a middle part of the hinge arm at a second end;

[0010] the third connecting piece is hingedly connected at a first end of the hinge arm at a first end, and hingedly connected at a first end of the fourth connecting piece at a second end; wherein a middle part between the two ends of the third connecting piece is hingedly connected with a middle part of the first connecting piece;

[0011] the fourth connecting piece is hingedly connected at a second position of the hinge cup at a second end, and the first position and the second position are different;

[0012] wherein the first connecting piece comprises a first slot body, a first extension, a sliding push block and an abutting structure;

[0013] the first slot body comprises a top wall and side walls located on both sides of the top wall;

[0014] the first extension is located at a connecting end of the first slot body, and is an extension part of the side walls;

[0015] The sliding push block is slidably located in the first groove body; the sliding push block is internally provided with an elastic member, one end of the elastic member extends from one end of the sliding push block, and the other end abuts against the sliding push block;

[0016] The abutting structure is fixed at the connecting end of the first groove body and is used for limiting the sliding of the sliding push block;

[0017] The first end of the second groove body serves as the second end of the second connecting member and is used for being hingedly connected with the first end of the second connecting member; the first end of the second connecting member abuts against the sliding push block; when the hinge cup and the hinge arm are within a first preset angle range, the sliding push block is driven to rotate by the elastic force of the elastic member to generate a whirling force, the first connecting member, the third connecting member and the fourth connecting member are linked based on the whirling force, and the movement of the hinge cup is driven.

[0018] Optionally, an end of the first extension part away from the first groove body serves as the first end of the first connecting member;

[0019] An end of the first extension part close to the first groove body is provided with a through hole used for being hingedly connected with the third connecting member; and

[0020] The inner side of the first extension part is further provided with an annular protrusion surrounding the through hole and used for limiting the leftward and rightward movement of the third connecting member.

[0021] Optionally, the inner sides of the side walls on both sides of the top wall are respectively provided with one or more protrusions and used for limiting the leftward and rightward movement of the sliding push block.

[0022] Optionally, the sliding push block and the first end of the second connecting member have mutual cooperation.

[0023] The end of the sliding push block abutting against the second connecting member is in a stepped shape or a notch shape;

[0024] The second connecting member comprises a second groove body, a second extension part and a special-shaped cam;

[0025] The second groove body is located at the first end of the second connecting member;

[0026] The second extension part is located at the second end of the second connecting member and is an extension part of the side walls on both sides of the second groove body;

[0027] The concave bottom of the second groove body is provided with a bayonet;

[0028] The special-shaped cam is provided with a clamping block;

[0029] The special-shaped cam is fixed in the second groove body through the bayonet and the clamping block.

[0030] The special-shaped cam, which is used to abut against one side of the sliding push block, comprises an arc-shaped convex surface for rotation.

[0031] Optionally, the concave bottom of the second groove body is further provided with a positioning block, which abuts against the other side of the special-shaped cam.

[0032] Optionally, the third connecting member comprises a third groove body and a third extension;

[0033] The third groove body is located at the first end of the third connecting member.

[0034] The third extension is located at the second end of the third connecting member, and is an extended part of the side walls of the third groove body.

[0035] The end of the third extension away from the third groove body serves as the first end of the third connecting member and is used for hingedly connecting the end of the hinge arm; the end of the third groove body away from the third extension serves as the second end of the third connecting member and is used for hingedly connecting the first end of the fourth connecting member; and a hinge hole is arranged at the connection between the third groove body and the third extension and is used for hingedly connecting the middle part of the first connecting member.

[0036] Optionally, the fourth connecting member comprises a fourth groove body and a buffer device.

[0037] The first end of the fourth groove body serves as the first end of the fourth connecting member.

[0038] The second end of the fourth groove body serves as the second end of the fourth connecting member.

[0039] The buffer device is located in the fourth groove body.

[0040] The buffer device comprises:

[0041] A damping oil cylinder seat is fixed in the fourth groove body.

[0042] A damping oil cylinder is located in the damping oil cylinder seat, and the movable end of the damping oil cylinder at least partially extends out of the damping oil cylinder seat.

[0043] When the third connecting member and the fourth connecting member are within a second preset angle range, the movable end abuts against the inner wall of the concave bottom of the third groove body, and the damping oil cylinder generates a damping force to slow down the rotation speed in a predetermined direction.

[0044] Optionally, the damping oil cylinder comprises an oil cylinder jacket, a spring and a damping rod, and the oil cylinder jacket is provided with a containing cavity.

[0045] The first end of the oil cylinder sleeve is a hemispherical head, which is the movable end of the damping oil cylinder;

[0046] The second end of the oil cylinder sleeve is the opening of the accommodating cavity;

[0047] The spring is located in the accommodating cavity;

[0048] The damping rod, one end of which is connected against the spring, the other end of which extends out of the opening and abuts against the blocking plug of the fourth connecting piece.

[0049] Optionally, the cup-shaped concealed hinge is used in a furniture cabinet door.

[0050] One aspect of the embodiment of the present application provides a cup-shaped concealed hinge, comprising:

[0051] A hinge arm, a connecting piece and a hinge cup;

[0052] The connecting piece is rotatably connected between the hinge cup and the hinge arm;

[0053] The connecting piece comprises a first connecting piece and a second connecting piece;

[0054] The first connecting piece is hingedly connected at a first position of the hinge cup at a first end and hingedly connected at a first end of the second connecting piece at a second end;

[0055] The second connecting piece is hingedly connected at a second end to a middle part of the hinge arm;

[0056] The first connecting piece comprises a first slot body, a first extension, a sliding push block and an abutting structure;

[0057] The first slot body comprises a top wall and side walls located on both sides of the top wall;

[0058] The first extension is located at a connecting end of the first slot body and is an extension of the side walls;

[0059] The sliding push block is slidably located in the first slot body; the sliding push block is internally provided with an elastic member, one end of the elastic member extends out of one end of the sliding push block, and the other end of the elastic member abuts against the inside of the sliding push block;

[0060] The abutting structure is fixed at the connecting end of the first slot body and is used for limiting the sliding of the sliding push block;

[0061] The first end of the second groove body is used as the second end of the second connecting piece, and is hinged with the first end of the second connecting piece. The first end of the second connecting piece abuts against the sliding push block. When the hinge cup and the hinge arm are in the first preset angle range, the sliding push block is driven to rotate to generate a swing force under the elastic force of the elastic piece. The swing force links the first connecting piece, and drives the movement of the hinge cup.

[0062] The cup-shaped blind hinge provided by the embodiment of the application can push the sliding push block by the elastic force of the elastic piece when the cup-shaped blind hinge is at a predetermined angle. The pushing force drives the second connecting piece to swing. The swing force of the second connecting piece drives the hinge cup to rotate and close in a linkage mode through the first connecting piece, the third connecting piece and the fourth connecting piece, thereby improving the opening and closing effect. BRIEF DESCRIPTION OF DRAWINGS

[0063] Figure 1 A product perspective view of the cup-shaped blind hinge after assembly is schematically shown;

[0064] Figure 2 A cross-sectional view of the cup-shaped blind hinge after assembly is schematically shown;

[0065] Figure 3 A partially exploded view of the cup-shaped blind hinge after assembly is schematically shown;

[0066] Figure 4 A perspective view of the hinge arm is schematically shown;

[0067] Figure 5 A perspective view of the second connecting piece is schematically shown;

[0068] Figure 6 A perspective view of the second groove body and the second extension in the second connecting piece is schematically shown;

[0069] Figure 7 A perspective view of the special-shaped cam in the second connecting piece is schematically shown;

[0070] Figure 8 A perspective view of the sliding push block in the first connecting piece is schematically shown;

[0071] Figure 9 A side view of the sliding push block in the first connecting piece is schematically shown;

[0072] Figure 10 A perspective view of the first groove body and the first extension in the first connecting piece is schematically shown;

[0073] Figure 11Fig. 6 schematically shows a side view of the first slot and the first extension of the first connecting piece in the embodiment;

[0074] Figure 12 Fig. 7 schematically shows a perspective view of the fourth connecting piece in the embodiment;

[0075] Figure 13 Fig. 8 schematically shows a sectional view of the fourth connecting piece in the embodiment;

[0076] Figure 14 Fig. 9 schematically shows a perspective view of the fourth slot of the fourth connecting piece in the embodiment;

[0077] Figure 15 Fig. 10 schematically shows a perspective view of the damping oil cylinder seat in the embodiment;

[0078] Figure 16 Fig. 11 schematically shows a perspective view of the damping oil cylinder in the embodiment;

[0079] Figure 17 Fig. 12 schematically shows a perspective view of the hinge cup in the embodiment;

[0080] Figure 18 Fig. 13 schematically shows a door closing action diagram;

[0081] Figure 19 Fig. 14 schematically shows a closed state diagram of the cup-shaped hidden hinge in the embodiment. DETAILED DESCRIPTION

[0082] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0083] It should be noted that the description of "first", "second" and the like in the embodiments of the present application is only for the purpose of description and should not be understood as indicating or implying the relative importance of the technical features indicated or the number of the technical features indicated. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those of ordinary skill in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0084] It should be noted that "middle" and "intermediate" are not strictly defined as the middle, but refer to the region between the two ends.

[0085] It should be noted that the cup-shaped dark hinge (Cup hinges) protected by the invention meets and is superior to the relevant definitions, requirements and test standards of the People's Republic of China Light Industry Standard QB / T1242-1991, QBT2189-2013, and at the same time, meets and is superior to the relevant definitions, requirements and test standards in European Union Standard 15570-2008.

[0086] The following will be described by way of example, the cup-shaped dark hinge protected by the patent.

[0087] As shown in the embodiment, the cup-shaped dark hinge comprises: a hinge arm 7, a wing-shaped base 8, a connecting piece, a hinge cup 9. Figures 1-19

[0088] The hinge cup 9 is fixed on the door / frame by bolts and other fixing members.

[0089] The hinge arm 7 is fixed on the frame / door through the wing-shaped base 8. The wing-shaped base 8 is fixed on the frame / door by bolts and other fixing members. The wing-shaped base 8 is used to fix the hinge arm 7. The arrangement of the hinge arm 7 and the wing-shaped base 8 can facilitate the replacement of the hinge arm 7.

[0090] The connecting piece is rotatably connected between the hinge cup 9 and the hinge arm 7.

[0091] The connecting piece comprises a first connecting piece 1, a second connecting piece 2, a third connecting piece 3 and a fourth connecting piece 4.

[0092] The first connecting piece 1 is hingedly connected at the first position of the hinge cup 9 at the first end, and is hingedly connected at the second end to the first end of the second connecting piece 2. Specifically, the hinge connection between the first connecting piece 1 and the hinge cup 9 can be achieved through the hole 15 of the first connecting piece 1, the hole 91 of the hinge cup 9 and the shaft pin. The hinge connection between the first connecting piece 1 and the second connecting piece 2 can be achieved through the hole 11 of the first connecting piece 1, the hole 211 of the second connecting piece 2 and the shaft pin.

[0093] The second connecting piece 2 is hingedly connected at the second end to the middle of the hinge arm 7. Specifically, the hinge connection between the second connecting piece 2 and the hinge arm 7 can be achieved through the hole 212 of the second connecting piece 2, the hole 712 of the hinge arm 7 and the shaft pin.

[0094] ​The third connecting piece 3 is hingedly connected to the end of the hinge arm 7 at the first end, and hingedly connected to the first end of the fourth connecting piece 4 at the second end; wherein the middle part of the third connecting piece 3 between the two ends is hingedly connected to the middle part of the first connecting piece 1. Specifically, the hinge connection between the third connecting piece 3 and the hinge arm 7 can be achieved through the hole 33 of the third connecting piece 3, the hole 711 of the hinge arm 7, and the shaft pin. The hinge connection between the third connecting piece 3 and the first connecting piece 1 can be achieved through the hole 31 of the third connecting piece 3, the hole 13 of the first connecting piece 1, and the shaft pin. The hinge connection between the third connecting piece 3 and the fourth connecting piece 4 can be achieved through the hole 32 of the third connecting piece 3, the hole 413 of the fourth connecting piece 4, and the shaft pin.

[0095] The second end of the fourth connecting piece 4 is hingedly connected to the second position of the hinge cup 9, and the first position and the second position are different. Specifically, the hinge connection between the fourth connecting piece 4 and the hinge cup 9 can be achieved through the hole 412 of the fourth connecting piece 4, the hole 92 of the hinge cup 9, and the shaft pin. The first position corresponds to the hole 91, and the second position corresponds to the hole 92.

[0096] The first connecting piece 1 includes a first groove body, a first extension, a sliding push block 5, and an abutting structure. As an example, a plug pin passes through the hole 12 in the first connecting piece 1, so that the plug pin forms the abutting structure.

[0097] The first groove body includes a top wall and side walls on both sides of the top wall;

[0098] The first extension is an extension of the side walls at the connecting end of the first groove body;

[0099] The sliding push block 5 is slidably located in the first groove body; the sliding push block 5 is provided with a one-end-open cavity 51 for containing an elastic member (such as a spring 6), one end of the elastic member 6 extends out of one end of the sliding push block 5 (the opening of the cavity 51), and the other end abuts against the inside of the sliding push block 5 (the bottom of the cavity 51);

[0100] The abutting structure is fixed at the connecting end of the first groove body and is used to limit the sliding of the sliding push block 5; specifically, the other end of the elastic member 6 can abut against the plug pin (the plug pin passing through the hole 12 as the abutting structure).

[0101] The first end of the second groove body is the second end of the second connecting piece 2, used for being hinged with the first end of the second connecting piece 2, the first end of the second connecting piece 2 abuts against the sliding push block 5, when the hinge cup 9 and the hinge arm 7 are in the first preset angle range, the sliding push block 5 is driven to rotate to generate a swing force under the elastic force of the elastic member 6, the swing force is linked with the first connecting piece 1, the third connecting piece 3 and the fourth connecting piece 4, and the movement of the hinge cup 9 is driven.

[0102] As Figure 19 When the cup-shaped hidden hinge is at the angle, the elastic force of the elastic member 6 pushes the sliding push block 5, the pushing force drives the second connecting piece 2 to swing around the hole 212 as the axis, the swing force of the second connecting piece 2 drives the hinge cup 9 to rotate and close in a linkage manner through the first connecting piece 1, the third connecting piece 3 and the fourth connecting piece 4, and the opening and closing effect is improved.

[0103] As a preferred embodiment, the end of the first extension part away from the first groove body is the first end (corresponding to the hole 15) of the first connecting piece 1, the end of the first extension part close to the first groove body is provided with a through hole (corresponding to the hole 13) used for being hinged with the third connecting piece 3, and the inner side of the first extension part is further provided with an annular protrusion 131 surrounding the through hole, used for limiting the left and right movement of the third connecting piece 3. Through limiting the left and right movement of the third connecting piece 3, the preferred embodiment reduces mechanical wear and service life.

[0104] As a preferred embodiment, the inner sides of the side walls on both sides of the top wall are respectively provided with one or more protrusions 16, used for limiting the left and right movement of the sliding push block 5. The preferred embodiment prevents the sliding push block 5 from being separated through the protrusions 16. In other embodiments, holes 14 can also be provided on the side walls on both sides of the top wall, and a pin is inserted through the holes 14 and fixed between the side walls on both sides, further preventing the sliding push block 5 from being separated.

[0105] As a preferred embodiment, the sliding push block 5 and the first end (corresponding to the hole 211) of the second connecting piece 2 have a mutual cooperation wheel movement, and the end 52 of the sliding push block 5 abutting against the second connecting piece 2 is in a stepped shape or a notched shape.

[0106] The second connecting piece 2 comprises a second groove body 21, a second extension part and a special-shaped cam 22.

[0107] The second groove body 21 is located at the first end (corresponding to the hole 211) of the second connecting piece 2.

[0108] The second extension part is located at the second end (corresponding to the hole 212) of the second connecting piece 2, and is an extension part of the side walls on both sides of the second groove body 21.

[0109] Wherein, the concave bottom of the second groove body 21 is provided with a clamping hole 213;

[0110] Wherein, the special-shaped cam is provided with a clamping block 223;

[0111] Wherein, through the clamping hole 213 and the clamping block 223, the special-shaped cam 22 is fixed in the second groove body 21 (the special-shaped cam 22 can be provided with a hole 221, which passes through the same shaft pin as the hole 211 and the hole 11 of the first connecting piece, so that the special-shaped cam 22 is fixed);

[0112] Wherein, the side of the special-shaped cam 22 for abutting against the sliding push block 5 comprises an arc convex surface, which is used for wheeling.

[0113] In the above preferred embodiment, the elastic force of the elastic piece 6 pushes the sliding push block 5, and the pushing force drives the combined second connecting piece 2 to swing around the shaft 212 through the special-shaped cam 22 which is always in abutment. The swing force of the second connecting piece 2 drives the hinge cup 9 to rotate and close through the first connecting piece 1, the third connecting piece 3 and the fourth connecting piece 4, so as to improve the opening and closing effect. The special-shaped cam 22 of the second connecting piece 2, and the clamping block 223 on the special-shaped cam 22 and the clamping hole 213 on the second groove body 21 cooperate, so as to enhance the stability of the special-shaped cam 22 in the second groove body 21.

[0114] As a preferred embodiment: the concave bottom of the second groove body 21 is further provided with a positioning block 214, which abuts against the other side 222 of the special-shaped cam. This preferred embodiment enhances the bearing force of the special-shaped cam 22 through the positioning block 214.

[0115] As a preferred embodiment: the third connecting piece 3 comprises a third groove body and a third extension. Wherein, the third groove body is located at the first end of the third connecting piece 3. The third extension is located at the second end of the third connecting piece 3, which is an extension of the two side walls of the third groove body. The end of the third extension away from the third groove body (corresponding to hole 33) serves as the first end of the third connecting piece 3 (corresponding to hole 33), which is used for hinging the end of the hinge arm 7 (corresponding to hole 711). The end of the third groove body away from the third extension (corresponding to hole 32) serves as the second end of the third connecting piece 3 (corresponding to hole 32), which is used for hinging the first end of the fourth connecting piece 4 (corresponding to hole 413). The connection between the third groove body and the third extension is provided with a hinge hole (corresponding to hole 31), which is used for hinging the middle part of the first connecting piece 1 (corresponding to hole 13).

[0116] As a preferred embodiment: the fourth connecting piece 4 comprises a fourth groove body 41 and a buffer device;

[0117] The first end of the fourth slot body 41 is the first end of the fourth connecting member 4 (corresponding to hole 413);

[0118] The second end of the fourth slot body 41 is the second end of the fourth connecting member 4 (corresponding to hole 412);

[0119] The buffer device is located in the fourth slot body 41;

[0120] The buffer device includes:

[0121] The damping oil cylinder seat 42 is fixed in the fourth slot body 41 (the damping oil cylinder seat can be provided with a hole 421, which passes through the same shaft pin 44 as the hole 413 and the hole 32 of the third connecting member, so that the damping oil cylinder seat 42 is fixed);

[0122] The damping oil cylinder 43 is located in the damping oil cylinder seat 42, and the movable end of the damping oil cylinder 43 at least partially protrudes from the damping oil cylinder seat 42;

[0123] When the third connecting member 3 and the fourth connecting member 4 are in the second preset angle range, the movable end abuts against the concave bottom inner wall of the third slot body, and the damping oil cylinder 43 generates a damping force to slow down the rotation speed in the predetermined direction.

[0124] In this preferred embodiment, the movable end of the damping oil cylinder 43 in the fourth connecting member 4 abuts against the concave bottom inner wall of the third slot body, and the abutting damping force slows down the closing operation speed of the hinge cup 9 and the associated connecting members, so that the door panel is slowly and gently closed.

[0125] As a preferred embodiment, the damping oil cylinder 43 includes an oil cylinder sleeve 431, a spring, and a damping rod 432, and the oil cylinder sleeve is provided with a containing cavity;

[0126] The first end of the oil cylinder sleeve 431 is a hemispherical head 433, which is the movable end of the damping oil cylinder 43;

[0127] The second end of the oil cylinder sleeve 431 is the opening of the containing cavity;

[0128] The spring is located in the containing cavity;

[0129] The damping rod 432 is connected to abut against the spring at one end and protrudes from the opening and abuts against the blocking latch of the fourth connecting member 4 at the other end.

[0130] It should be noted that the damping oil cylinder seat 42 has an opening 422 for the blocking pin to pass through, and the fourth groove body 41 has a hole 411 for the blocking pin to pass through. In the preferred embodiment, the first end of the oil cylinder sleeve 431 is provided as a hemispherical head and serves as the movable end of the damping oil cylinder 43, which can improve the service life of the buffer device.

[0131] As a preferred embodiment: the cup-shaped concealed hinge is used in furniture cabinet doors. For example, it is particularly effective in light furniture cabinet doors.

[0132] One aspect of an embodiment of the present application provides a cup-shaped concealed hinge, comprising:

[0133] a hinge arm, a connecting piece, and a hinge cup;

[0134] the connecting piece is rotatably connected between the hinge cup and the hinge arm;

[0135] wherein the connecting piece comprises a first connecting piece and a second connecting piece;

[0136] the first connecting piece is hingedly connected at a first end to a first position of the hinge cup and at a second end to a first end of the second connecting piece;

[0137] the second connecting piece is hingedly connected at a second end to a middle part of the hinge arm;

[0138] wherein the first connecting piece comprises a first groove body, a first extension, a sliding push block, and an abutting structure;

[0139] the first groove body comprises a top wall and side walls on both sides of the top wall;

[0140] the first extension is an extension of the side walls at a connecting end of the first groove body;

[0141] the sliding push block is slidably located in the first groove body; the sliding push block has an elastic member built therein, one end of the elastic member extends out of one end of the sliding push block, and the other end abuts against the inside of the sliding push block;

[0142] the abutting structure is fixed at the connecting end of the first groove body and is used to limit the sliding of the sliding push block;

[0143] wherein a first end of the second groove body serves as a second end of the second connecting piece and is used to be hingedly connected to a first end of the second connecting piece, the first end of the second connecting piece abuts against the sliding push block, when the hinge cup and the hinge arm are within a first predetermined angle range, the sliding push block is driven to rotate by the elastic force of the elastic member to generate a whirling force, the whirling force links the first connecting piece and drives the movement of the hinge cup.

[0144] The above merely describes the preferred embodiments of the present application, and is not intended to limit the scope of the present application, and any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, are also included in the scope of protection of the present application.

Claims

1. A cup-shaped concealed hinge, characterized in that, include: Hinge arm, connector, and hinge cup; 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 a first end hinged to the first position of the hinge cup, and a second end hinged to the first end of the second connector; The second connector has its second end hinged to the middle of the hinge arm; The third connector has a first end hinged to the end of the hinge arm and a second end hinged to the first end of the fourth connector; wherein the middle part of the third connector located between the two ends is hinged to the middle part of the first connector. The fourth connector has its second end hinged to the hinge cup at a second position, where the first position and the second position are different. The first connector includes a first groove, a first extension, a sliding push block, and abutment structure. The first tank includes a top wall and side walls located on both sides of the top wall; The first extension is located at the connecting end of the first groove and is an extension of the side walls on both sides; The sliding push block is slidably located in the first groove; the sliding push block has an elastic element built in it, one end of which extends out from one end of the sliding push block and the other end abuts against the inside of the sliding push block; The abutment structure is fixedly located at the connecting end of the first groove body and is used to restrict the sliding of the sliding push block; Wherein, the first end of the second groove serves as the second end of the second connector, and is used to hinge with the first end of the second connector. The first end of the second connector abuts against the sliding push block. When the hinge cup and the hinge arm are within a first preset angle range, the sliding push block drives the second connector to rotate under the elastic force of the elastic member to generate a swing force. Based on this swing force, the first connector, the third connector, and the fourth connector are linked to drive the movement of the hinge cup. The sliding push block and the first end of the second connecting member have a mutual rotating interaction; The end of the sliding push block that abuts against the second connecting member is in a stepped or notched shape; The second connecting member includes: a second groove, a second extension, and a shaped cam; The second groove is located at the first end of the second connector; Wherein, the second extension is located at the second end of the second connector and is an extension of the two side walls of the second groove; The second groove body has a slot at its concave bottom; The irregularly shaped cam is equipped with a locking block; The irregularly shaped cam is fixed in the second groove body through the bayonet and the locking block; The irregularly shaped cam has an arc-shaped convex surface on one side that abuts against the sliding push block, for rotating; The second groove body is further provided with a positioning block at its concave bottom, and the positioning block abuts against the other side of the irregular cam. Wherein, the end of the first extension that is away from the first groove is the first end of the first connector; The first extension portion, near the end of the first groove, is provided with a through hole for hinged connection with the third connector; and The inner side of the first extension is also provided with an annular protrusion around the through hole, which is used to restrict the left and right movement of the third connector; One or more protrusions are provided on the inner side of the sidewalls on both sides of the top wall to restrict the left and right movement of the sliding push block.

2. The cup-shaped concealed hinge according to claim 1, characterized in that: The third connector includes a third groove and a third extension. The third groove is located at the first end of the third connector; The third extension is located at the second end of the third connector and is an extension of the two side walls of the third groove. Wherein, the end of the third extension away from the third groove serves as the first end of the third connector and is used to hinge the end of the hinge arm; the end of the third groove away from the third extension serves as the second end of the third connector and is used to hinge the first end of the fourth connector; a hinge hole is provided at the connection between the third groove and the third extension for hinged connection with the middle part of the first connector.

3. The cup-shaped concealed hinge according to claim 2, characterized in that: The fourth connector includes a fourth groove and a buffer device; The first end of the fourth groove serves as the first end of the fourth connector. The second end of the fourth groove serves as the second end of the fourth connector. The buffer device is located within the fourth groove. The buffer device includes: The damping cylinder seat is fixed inside the fourth groove. A damping cylinder is located in the damping cylinder seat, and the movable end of the damping cylinder extends at least partially out of the damping cylinder seat; When the third connector and the fourth connector are within the second preset angle range, the movable end abuts against the concave inner wall of the third groove, and the damping cylinder generates a damping force to slow down the rotation speed in the predetermined direction.

4. The cup-shaped concealed hinge according to claim 3, characterized in that: The damping cylinder includes a cylinder sleeve, a spring, and a damping rod, and the cylinder sleeve is provided with a receiving cavity; The first end of the cylinder sleeve is a hemispherical head, which is the movable end of the damping cylinder; The second end of the cylinder sleeve is the opening of the receiving cavity; The spring is located within the receiving cavity; The damping rod has one end connected to and abuts against the spring, and the other end extends out of the opening and abuts against the blocking pin of the fourth connector.

5. The cup-shaped concealed hinge according to claim 1, characterized in that: The cup-shaped concealed hinge is used in furniture cabinet doors.

6. A cup-shaped concealed hinge, characterized in that, include: Hinge arm, connector, and hinge cup; The connector is rotatably connected between the hinge cup and the hinge arm; The connector includes a first connector and a second connector; The first connector has a first end hinged to the first position of the hinge cup, and a second end hinged to the first end of the second connector; The second connector has its second end hinged to the middle of the hinge arm; The first connector includes a first groove, a first extension, a sliding push block, and abutment structure. The first tank includes a top wall and side walls located on both sides of the top wall; The first extension is located at the connecting end of the first groove and is an extension of the side walls on both sides; The sliding push block is slidably located in the first groove; the sliding push block has an elastic element built in it, one end of which extends out from one end of the sliding push block and the other end abuts against the inside of the sliding push block; The abutment structure is fixedly located at the connecting end of the first groove body and is used to restrict the sliding of the sliding push block; Wherein, the first end of the second groove serves as the second end of the second connector, and is used to hinge with the first end of the second connector. The first end of the second connector abuts against the sliding push block. When the hinge cup and the hinge arm are within a first preset angle range, the sliding push block drives the second connector to rotate under the elastic force of the elastic member to generate a swing force. This swing force is linked to the first connector and drives the movement of the hinge cup. The sliding push block and the first end of the second connecting member have a mutual rotating interaction; The end of the sliding push block that abuts against the second connecting member is in a stepped or notched shape; The second connecting member includes: a second groove, a second extension, and a shaped cam; The second groove is located at the first end of the second connector; Wherein, the second extension is located at the second end of the second connector and is an extension of the two side walls of the second groove; The second groove body has a slot at its concave bottom; The irregularly shaped cam is equipped with a locking block; The irregularly shaped cam is fixed in the second groove body through the bayonet and the locking block; The irregularly shaped cam has an arc-shaped convex surface on one side that abuts against the sliding push block, for rotating; The concave bottom of the second groove is also provided with a positioning block, which abuts against the other side of the irregular cam; Wherein, the end of the first extension that is away from the first groove is the first end of the first connector; The first extension portion, near the end of the first groove, is provided with a through hole for hinged connection with the third connector; and The inner side of the first extension is also provided with an annular protrusion around the through hole, which is used to restrict the left and right movement of the third connector; One or more protrusions are provided on the inner side of the sidewalls on both sides of the top wall to restrict the left and right movement of the sliding push block.

Images