Embedded hinge

Abstract

The embedded hinge is characterized in that: the hinge mechanism comprises a connecting seat, a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the first connecting rod and the second connecting rod are hinged with the fixed seat and the connecting seat, the connecting seat has a first position and a second position relative to the fixed seat, the third connecting rod and the fourth connecting rod are hinged with the connecting seat and the movable seat, the movable seat has a third position and a fourth position relative to the connecting seat, when the connecting seat is in the first position and the movable seat is in the third position, the embedded hinge is in an open position, when the connecting seat is in the second position and the movable seat is in the fourth position, the embedded hinge is in a closed position, and the movable seat is embedded in the hinge box. By adopting the above scheme, when the embedded hinge is in the closed position, the movable seat can be completely embedded in the hinge box, so that when the embedded hinge is installed on the cabinet door, it is not necessary to groove on the cabinet door, the installation requirement is lower, the operation is more convenient, and it can be applied to various types of cabinet doors, and the application range is wide.

Description

Technical Field

[0001] This invention relates to the field of hardware accessories technology, specifically to an embedded hinge. Background Technology

[0002] A hinge, also known as a joint, is a mechanical device used to connect two solid objects and allow relative rotation between them. Hinges can be made of movable components or foldable materials.

[0003] In wardrobes and cabinets, conventional wardrobe hinges can be categorized by the closing position of the cabinet door into straight arm, medium bend, and large bend. Using a straight arm hinge will completely cover the side panel of the cabinet, using a medium bend hinge will cover half of the side panel, and using a large bend hinge will bend the side panel to expose it. Depending on the actual needs, the appropriate hinge must be selected, as different hinges are not universally compatible.

[0004] In addition, some wardrobes and cabinets use top and bottom hinges, such as a top and bottom hinge with adjustable opening and closing force, which is published in application number CN114320052A. It includes a hinge box, a hinge cup, and a drive mechanism that connects the hinge box and the hinge cup. In use, the hinge box is installed on the cabinet body, the hinge cup is installed on the cabinet door, and the hinge is achieved through the drive mechanism.

[0005] However, top and bottom hinges are usually used for doors with profile frames, such as aluminum profile doors. The hinge cups are positioned and installed by embedding into the profile. Therefore, a cabinet door can usually only have two top and bottom hinges installed, that is, the top and bottom sides of the cabinet door. This results in poor connection stability, especially for tall cabinet doors with large vertical spacing. Relying solely on two top and bottom hinges cannot properly support the cabinet door.

[0006] Top-and-bottom hinges are unsuitable for ordinary wooden doors because using them requires not only slotting the cabinet body but also slotting the door itself. These two slots must be aligned to install the hinge box and hinge cup, respectively. This requires high precision and is difficult to manufacture. Even a slight misalignment can lead to misalignment of the cabinet body and door, resulting in an uneven surface. Furthermore, misalignment cannot be corrected and may render the door unusable. Additionally, installing hinge cups in the door requires increasing its thickness. Standard-thickness wooden doors cannot meet the requirements for slotting, and increasing the door's thickness significantly increases both weight and cost. Summary of the Invention

[0007] To overcome the shortcomings of the prior art, the present invention provides an embedded hinge.

[0008] The technical solution adopted in this invention is as follows: An embedded hinge includes a hinge box, a fixed seat, and a movable seat. The fixed seat is fixedly installed inside the hinge box, and the movable seat is movably engaged with the fixed seat through a hinge mechanism. The hinge mechanism includes a connecting seat, a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod. The first connecting rod and the second connecting rod are hinged to the fixed seat and the connecting seat, respectively. The connecting seat has a first position and a second position relative to the fixed seat. The third connecting rod and the fourth connecting rod are hinged to the connecting seat and the movable seat, respectively. The movable seat has a third position and a fourth position relative to the connecting seat. When the connecting seat is in the first position and the movable seat is in the third position, the embedded hinge is in the open position. When the connecting seat is in the second position and the movable seat is in the fourth position, the embedded hinge is in the closed position, and the movable seat is embedded inside the hinge box.

[0009] The side wall of the first connecting rod is formed with a first arc-shaped protrusion, and the fixed seat is provided with a first elastic mechanism that cooperates with the first arc-shaped protrusion;

[0010] When the first elastic mechanism abuts against one side of the first arc-shaped protrusion, the first elastic mechanism can drive the connecting seat to remain in the first position; when the first elastic mechanism abuts against the other side of the first arc-shaped protrusion, the first elastic mechanism can drive the connecting seat to remain in the second position.

[0011] The first elastic mechanism includes a first spring seat, a first slider, and a first spring. The first spring seat is mounted on a fixed base, and the first slider is slidably disposed on the fixed base. The two ends of the first spring are respectively connected to the first spring seat and the first slider, which can drive the first slider to maintain contact with the first arc-shaped protrusion of the first connecting rod.

[0012] A first damper is installed on the fixed seat, which corresponds to the connecting seat and is used to provide buffering for the connecting seat during the closing of the embedded hinge.

[0013] The connecting seat is connected to a second elastic mechanism that cooperates with the end of the fourth link. When the second elastic mechanism abuts against one side wall of the fourth link, the second elastic mechanism can drive the movable seat to remain in the fourth position.

[0014] The second elastic mechanism includes a second spring seat, a second slider, and a second spring. The second spring seat is hinged to a fixed seat, and the second slider is slidably disposed on a connecting seat and rotatably engaged with the connecting seat. The two ends of the second spring are respectively connected to the second spring seat and the second slider, which can drive the second slider to maintain contact with the end of the fourth connecting rod.

[0015] A second damper is installed on the fixed seat, which corresponds to the movable seat and is used to provide cushioning for the movable seat during the closing of the embedded hinge.

[0016] The end of the first connecting rod is formed with a clearance groove, and the end of the third connecting rod is formed with a limiting boss. When the connecting seat is in the second position, the clearance groove of the first connecting rod and the limiting boss of the third connecting rod cooperate with each other. When the connecting seat is in the first position, the limiting boss of the first connecting rod and the limiting boss of the third connecting rod cooperate with each other and keep the movable seat in the third position.

[0017] When the movable seat is in the third position, the two ends of the fourth link are in limiting contact with the third link and the second link, respectively.

[0018] The beneficial effects of the present invention are as follows: When the embedded hinge is in the closed position, the movable seat is completely embedded in the hinge box. Therefore, when the embedded hinge is installed on the cabinet door, there is no need to make a groove on the cabinet door. The installation requirements are lower, the operation is more convenient, and it can be applied to various types of cabinet doors, with a wide range of applications. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the embedded hinge in the open position according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the embedded hinge in the closed position according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the embedded hinge hidden hinge box in the open position according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the embedded hinge when the hinge box is hidden behind the hinge in the closed position according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of the embedded hinge connector in the second position and the movable seat in the third position according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the connection structure between the embedded hinge and the cabinet body and cabinet door in an embodiment of the present invention.

[0025] Figure 7 for Figure 6 Enlarged diagram of point A in the middle. Detailed Implementation

[0026] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0027] As shown in the figure, an embedded hinge includes a hinge box 1, a fixed seat 2, a movable seat 3, and a hinge mechanism. The fixed seat 2 is fixedly installed in the hinge box 1, and the movable seat 3 is movably engaged with the fixed seat 2 through the hinge mechanism.

[0028] The hinge mechanism includes a connecting seat 4, a first link 5, a second link 6, a third link 7, and a fourth link 8. The first link 5 and the second link 6 are hinged to the fixed seat 2 and the connecting seat 4, respectively. The connecting seat 4 can rotate relative to the fixed seat 2 through the first link 5 and the second link 6, so that the connecting seat 4 has a first position and a second position relative to the fixed seat 2. The third link 7 and the fourth link 8 are hinged to the connecting seat 4 and the movable seat 3, respectively. The movable seat 3 can rotate relative to the connecting seat 4 through the third link 7 and the fourth link 8, so that the movable seat 3 has a third position and a fourth position relative to the connecting seat 4.

[0029] like Figure 1 , Figure 3 As shown, at this time, the connecting seat 4 is in the first position relative to the fixed seat 2, and the movable seat 3 is in the third position relative to the connecting seat 4, with the embedded hinge in the open position.

[0030] like Figure 2 , Figure 4 As shown, at this time, the connecting seat 4 is in the second position relative to the fixed seat 2, and the movable seat 3 is in the fourth position relative to the connecting seat 4. The embedded hinge is in the closed position, and when the embedded hinge is in the closed position, the movable seat 3 is completely embedded in the hinge box 1.

[0031] like Figure 3-4 As shown, the right side wall of the first connecting rod 5 has a first arc-shaped protrusion 51, and the fixed base 2 is provided with a first elastic mechanism 9 that cooperates with the first arc-shaped protrusion 51.

[0032] The first elastic mechanism 9 is located on the right side of the first connecting rod 5. It includes a first spring seat 91, a first slider 92, and a first spring 93. The first spring seat 91 is mounted on the fixed base 2, and the first slider 92 is slidably mounted on the fixed base 2. The two ends of the first spring 93 are connected to the first spring seat 91 and the first slider 92 respectively, which drives the first slider 92 to maintain contact with the first arc-shaped protrusion 51 of the first connecting rod 5. A spring seat is provided between the first spring seat 91 and the first slider 92 to further position the first spring 93 and ensure stable and reliable operation. A roller is formed on the first slider 92, so that the first slider 92 and the first arc-shaped protrusion 51 form a rolling engagement, reducing friction and making the operation smoother and more reliable.

[0033] When the first slider 92 abuts against the lower side wall of the first arc-shaped protrusion 51, the first elastic mechanism 9 can drive the first connecting rod 5 to rotate counterclockwise and can hold the connecting seat 4 in the first position. When the first slider 92 abuts against the upper side wall of the first arc-shaped protrusion 51, the first elastic mechanism 9 can drive the first connecting rod 5 to rotate clockwise and can hold the connecting seat 4 in the second position.

[0034] In addition, a first damper 11 is installed on the fixed seat 2. The first damper 11 is arranged longitudinally and located on the right side of the fixed seat 2. A contact boss 41 is formed on the right side wall of the connecting seat 4. When the first elastic mechanism 9 can drive the first connecting rod 5 to rotate clockwise, the contact boss 41 can contact the first damper 11. The first damper 11 can provide buffer for the connecting seat 4 during the closing process of the embedded hinge.

[0035] like Figure 3-4 As shown, a second elastic mechanism 10, which cooperates with the lower end of the fourth connecting rod 8, is connected to the connecting seat 4. The second elastic mechanism 10 includes a second spring seat 101, a second slider 102, and a second spring 103. The second spring seat 101 is hinged to the fixed seat 2. The second slider 102 is slidably disposed on the connecting seat 4 and rotatably cooperates with the connecting seat 4. The two ends of the second spring 103 are respectively connected to the second spring seat 101 and the second slider 102, which can drive the second slider 102 to maintain contact with the lower end of the fourth connecting rod 8. A spring seat is provided between the second spring seat 101 and the second slider 102 to further position the second spring 103 and ensure stable and reliable operation. A roller is formed on the second slider 102, so that the second slider 102 and the fourth connecting rod 8 form a rolling cooperation, reducing friction and making the operation smoother and more reliable.

[0036] When the second slider 102 contacts the lower left side wall of the fourth link 8, the second elastic mechanism 10 can drive the fourth link 8 to rotate counterclockwise and can hold the movable seat in the third position.

[0037] In addition, a second damper 12 is installed on the fixed seat 2. The second damper 12 is arranged longitudinally and located on the left side of the fixed seat 2. When the second elastic mechanism 10 drives the fourth link 8 to rotate counterclockwise, the movable seat 3 can contact the second damper 12. The second damper 12 can provide buffer for the movable seat 3 during the closing of the embedded hinge.

[0038] like Figure 3-4 As shown, the upper end of the first connecting rod 5 has a clearance groove 52, and the end of the third connecting rod 7 has a limiting boss 71. Both the clearance groove 52 and the limiting boss 71 are arc-shaped structures. When the connecting seat 4 is in the second position, the clearance groove 52 of the first connecting rod 5 and the limiting boss 71 of the third connecting rod 7 make clearance cooperation. When the connecting seat 4 is in the first position, the first connecting rod 5 and the limiting boss 71 of the third connecting rod 7 make limiting cooperation and keep the movable seat 3 in the third position.

[0039] In addition, when the movable seat 3 is in the third position, the two ends of the fourth link 8 are respectively in limiting contact with the third link 7 and the second link 6.

[0040] When the aforementioned embedded hinge is applied to wardrobes and cabinets, the hinge box is embedded in the slot of the cabinet body 13, and the movable seat is fixed to the cabinet door with screws. The operation process of the aforementioned embedded hinge is as follows:

[0041] When the cabinet door is closed, the embedded hinge is positioned as follows: Figure 2 When the door is in the closed position as shown, the movable seat is in the fourth position, the connecting seat is in the second position, the movable seat is embedded in the hinge box, and the cabinet door and the cabinet body can fit together to remain closed.

[0042] When the cabinet door is pushed open, it will cause the movable seat to move. Initially, due to the constraint of the first elastic mechanism, the connecting seat remains stationary, and only the movable seat moves relative to the connecting seat via the third and fourth links until the movable seat reaches the third position relative to the connecting seat. At this time, as... Figure 5 As shown, the two ends of the fourth link are in limiting contact with the third link and the second link respectively, so that the third link, the fourth link and the movable seat form a relatively fixed structure.

[0043] Then, as the cabinet door continues to open, causing the movable seat to continue moving, the mutual restraint between the third and fourth links allows the movable seat to drive the connecting seat to move. The connecting seat moves relative to the fixed seat via the first and second links until it reaches the first position relative to the fixed seat. At this time, as... Figure 3 As shown, the connecting seat is stably held in the first position under the restriction of the first elastic mechanism, while the third link is limited and engaged with the first link through the limiting boss, so the movable seat can also be stably held in the third position, the embedded hinge is held in the open position, and the cabinet door and the cabinet body can be perpendicular to each other and kept open.

[0044] When the cabinet door is pushed to close, the door will cause the movable seat to move. First, because the third link is in a limiting engagement with the first link through the limiting boss, the movable seat remains fixed relative to the connecting seat, which can drive the connecting seat to move relative to the fixed seat. When the connecting seat rotates a certain angle through the first link and the second link, the connecting seat will contact the first damper. At the same time, the clearance groove of the first link corresponds to the limiting boss of the third link and releases the limiting of the third link.

[0045] Then, as the cabinet door continues to close, causing the movable seat to continue moving, the movable seat begins to move relative to the connecting seat through the third and fourth links due to the limiting effect of the first damper. After the movable seat rotates a certain angle through the third and fourth links, it comes into contact with the second damper.

[0046] At this point, the connecting seat can continue to move under the push of the first elastic mechanism until it reaches the second position, and the movable seat can continue to move under the push of the second elastic mechanism until it reaches the fourth position. The movable seat is embedded in the hinge box, the embedded hinge remains in the closed position, and the cabinet door and the cabinet body can fit together and remain closed.

[0047] With the above solution, when the embedded hinge is in the closed position, the movable seat can be fully embedded in the hinge box. When the embedded hinge is connected to the cabinet door, there is no need to cut grooves on the cabinet door for installation; it can be fixed directly with screws. Therefore, the above-mentioned embedded hinge not only has lower installation requirements and is more convenient to operate, but also has better versatility.

[0048] The connection position between the aforementioned embedded hinge and the cabinet door is easy to adjust. Compared with conventional cabinet door hinges, which require corresponding hinges to achieve the corresponding installation position, the aforementioned embedded hinges can change the position of the cabinet door relative to the cabinet body simply by adjusting the connection position between the cabinet door and the embedded hinge, thereby achieving different installation requirements such as straight arm, large bend, and medium bend, making it more versatile.

[0049] In addition to the top and bottom sides of the cabinet door, the aforementioned embedded hinges can also be connected to the middle of the cabinet door. Compared to conventional top and bottom hinges, which can only be installed in two parts within the profiles on the top and bottom sides of the cabinet door, the aforementioned embedded hinges are suitable for wooden doors and can increase the number of hinges according to actual needs, thereby improving the stability of the hinge connection.

[0050] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0052] Please note to all technical personnel: Although the present invention has been described according to the specific embodiments above, the inventive concept of the present invention is not limited to this invention. Any modifications that utilize the inventive concept will be included within the scope of protection of this patent.

Claims

1. An embedded hinge, comprising a hinge box (1), a fixed seat (2), a movable seat (3), the fixed seat (2) being fixedly installed in the hinge box (1), the movable seat (3) being movably connected with the fixed seat (2) through a hinge mechanism; characterized in that the hinge mechanism comprising a connecting seat (4), a first connecting rod (5), a second connecting rod (6), a third connecting rod (7), and a fourth connecting rod (8), the first connecting rod (5) and the second connecting rod (6) being hingedly connected with the fixed seat (2) and the connecting seat (4), the connecting seat (4) having a first position and a second position relative to the fixed seat (2), the third connecting rod (7) and the fourth connecting rod (8) being hingedly connected with the connecting seat (4) and the movable seat (3), the movable seat (3) having a third position and a fourth position relative to the connecting seat (4), when the connecting seat (4) is at the first position and the movable seat (3) is at the third position, the embedded hinge is at an open position, and when the connecting seat (4) is at the second position and the movable seat (3) is at the fourth position, the embedded hinge is at a closed position, and the movable seat (3) is embedded in the hinge box (1).

2. The flush mount hinge of claim 1, wherein: a first arc-shaped protrusion (51) is formed on a side wall of the first connecting rod (5), and a first elastic mechanism (9) is arranged on the fixed seat (2) and matched with the first arc-shaped protrusion (51); when one side of the first arc-shaped protrusion (51) abuts against the first elastic mechanism (9), the first elastic mechanism (9) can drive the connecting seat (4) to remain at the first position, and when the other side of the first arc-shaped protrusion (51) abuts against the first elastic mechanism (9), the first elastic mechanism (9) can drive the connecting seat (4) to remain at the second position.

3. The flush mount hinge of claim 2, wherein: the first elastic mechanism (9) comprises a first spring seat (91), a first sliding block (92), and a first spring (93), the first spring seat (91) is installed on the fixed seat (2), the first sliding block (92) is slidably arranged on the fixed seat (2), and the first spring (93) is connected with the first spring seat (91) and the first sliding block (92) at two ends, respectively, and can drive the first sliding block (92) to remain in contact with the first arc-shaped protrusion (51) of the first connecting rod (5).

4. The flush mount hinge of claim 2, wherein: a first damper (11) is installed on the fixed seat (2) and corresponds to the connecting seat (4), and is used for providing buffering for the connecting seat (4) during closing of the embedded hinge.

5. The flush mount hinge of claim 1, wherein: a second elastic mechanism (10) is connected with the fourth connecting rod (8) at an end of the fourth connecting rod (8), and when one side wall of the fourth connecting rod (8) abuts against the second elastic mechanism (10), the second elastic mechanism (10) can drive the movable seat (3) to remain at the fourth position.

6. The flush mount hinge of claim 5, wherein: The second elastic mechanism (10) comprises a second spring seat (101), a second sliding block (102) and a second spring (103), the second spring seat (101) is hinged on the fixed seat (2), the second sliding block (102) is slidingly arranged on the connecting seat (4) and is rotationally matched with the connecting seat (4), and the two ends of the second spring (103) are connected with the second spring seat (101) and the second sliding block (102) respectively, so that the second sliding block (102) is kept in contact with the end of the fourth connecting rod (8).

7. The flush mount hinge of claim 5, wherein: The fixed seat (2) is provided with a second damper (12) corresponding to the movable seat (3), which provides buffering for the movable seat (3) during the closing of the embedded hinge.

8. The flush mount hinge of claim 1, wherein: The end of the first connecting rod (5) is formed with a let-in slot (52), and the end of the third connecting rod (7) is formed with a limiting boss (71), when the connecting seat (4) is in the second position, the let-in slot (52) of the first connecting rod (5) is in let-in cooperation with the limiting boss (71) of the third connecting rod (7), when the connecting seat (4) is in the first position, the first connecting rod (5) is in limiting cooperation with the limiting boss (71) of the third connecting rod (7), and the movable seat (3) is kept in the third position.

9. The flush mount hinge of claim 1, wherein: When the movable seat (3) is in the third position, the two ends of the fourth connecting rod (8) are in limiting contact with the third connecting rod (7) and the second connecting rod (6) respectively.

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