A hidden hinge for an out-swinging door

Abstract

This invention provides an outward-opening, concealed hinge, belonging to the field of hinge structure technology. It includes a fixing seat for fixing to the edge of a fixing plate and a movable piece for fixing to a movable fan. The fixing seat has a receiving groove that is embedded in the fixing plate. A rotating shaft is located within the receiving groove. The end of the movable piece away from the movable fan extends into the receiving groove and is rotatably connected to the rotating shaft. The movable piece has a bent recess that allows it to extend an arm to connect to the inner side of the movable fan. When the movable fan is closed relative to the fixing plate, the movable piece rotates around the rotating shaft, causing the recess to embed into the receiving groove. By embedding the fixing seat into the fixing plate and then using the movable piece as an extension arm to extend beyond the fixing seat and connect and fix to the movable fan, the hinge can be concealed from the outside when the movable fan is open, and when the movable fan is closed, the movable piece can be retracted into the receiving groove in the fixing seat from the inside, thus avoiding occupying storage space inside the movable fan.

Description

Technical Field

[0001] This invention relates to the field of hinge structure technology, and more particularly to an outward-opening concealed hinge. Background Technology

[0002] A hinge is a type of hinge structure, a mechanical device used to connect two solid objects and allow relative rotation between them. Hinges are used in furniture such as cabinets, cupboards, doors, and windows.

[0003] Commonly used hinges typically connect within the rotation angle between the fixed plate and the movable sash. In scenarios with outward-opening movable sashes, the hinges are exposed when the sash is closed, affecting the interior decoration. For hinge structures installed on the other side of the outward-opening movable sash, such as damping hinges and multi-pivot hinges, a large portion of the structure still protrudes from the fixed plate and the movable sash when the sash is closed, affecting the aesthetics of the inside of the movable sash and installation space. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, the present invention provides an outward-opening concealed hinge.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0006] A concealed outward-opening hinge is provided, comprising a fixing seat for fixing to the edge of a fixing plate and a movable piece for fixing to a movable fan. The fixing seat has a receiving groove that is embedded in the fixing plate. A rotating shaft is provided in the receiving groove. The end of the movable piece away from the movable fan extends into the receiving groove and is rotatably connected to the rotating shaft. The movable piece has a bent recess that extends out of the receiving groove to connect to the inner side of the movable fan. When the movable fan is closed relative to the fixing plate, the movable piece rotates around the rotating shaft and the recess is embedded in the receiving groove.

[0007] Furthermore, an elastic dustproof sheet is provided between the fixed base and the movable piece. Both ends of the elastic dustproof sheet are fixed with mounting pieces. The mounting piece at one end of the elastic dustproof sheet is detachably connected to the side of the movable piece facing away from the recess, and the other end is detachably connected to the side of the fixed base away from the edge of the fixed plate.

[0008] Furthermore, a mounting seat is provided inside the fixed seat, and the rotating shaft is fixedly mounted on the mounting seat. The mounting seat is movably mounted in the receiving groove of the fixed seat relative to the fixed seat. The fixed seat is provided with a first limiting device for limiting the position of the mounting seat parallel to the inner bottom wall of the receiving groove and perpendicular to the axis of the rotating shaft. The fixed seat is provided with a second limiting device for limiting the movement of the mounting seat relative to the depth direction of the receiving groove.

[0009] Furthermore, the first limiting device includes a first screw, a first movable hole communicating with the receiving groove is opened on the side of the fixed seat away from the rotating shaft, the first screw is movably connected in the first movable hole, one end of the first screw passes through the fixed seat and is fixedly connected to a first head, the fixed plate restricts the first head to move axially along the first movable hole, the other end of the first screw passes through the edge of the mounting seat and is threadedly connected to the mounting seat, and the end of the first screw away from the first head is provided with a first adjusting groove for adjustment by a wrench.

[0010] Furthermore, the second limiting device includes a connecting piece and a second screw. The connecting piece is located on the side of the mounting base near the bottom wall of the receiving groove. The side of the mounting base near the connecting piece has a guide groove along the depth direction of the receiving groove. The connecting piece is slidably connected to the guide groove along the depth direction of the guide groove. The second screw is vertically rotatably connected to the side of the connecting piece near the mounting base. The second screw passes through the mounting base and is rotatably connected to the mounting base. The end of the second screw away from the connecting piece has a second adjusting groove for adjustment by a wrench. The mounting base is slidably connected to the fixed base through the connecting piece.

[0011] Furthermore, the first movable hole is a strip-shaped hole extending along the depth direction of the receiving groove.

[0012] Furthermore, the bottom of the fixed base has an installation port that penetrates into the receiving groove. The cross-section of the installation port is trapezoidal, and the trapezoidal slope of the installation port is parallel to the sliding direction of the connecting piece. The long side of the trapezoid of the installation port is located on the side of the fixed base away from the receiving groove. The connecting piece passes through the installation port, and the two sides of the connecting piece have folded edges that correspond to and match the trapezoidal slopes on both sides of the installation port.

[0013] Furthermore, the movable piece is axially slidably connected to the rotating shaft, and the mounting base is provided with a third limiting device for restricting the position of the movable piece.

[0014] Furthermore, the third limiting device includes an adjusting rod and an adjusting block. The mounting base has a mounting hole that coaxially passes through the rotating shaft. The rotating shaft is interrupted in the middle with a first notch. The movable plate has a second notch with a width smaller than the first notch. The adjusting block is movably disposed within the first and second notches. The adjusting block and the second notch are of equal width. Both ends of the adjusting block are connected to adjusting rods. The adjusting rods pass through the mounting hole and are threaded to the mounting hole. At least one adjusting rod passes through the mounting hole and has a third adjusting groove at its end for adjustment by a wrench.

[0015] Furthermore, the adjusting rod and the adjusting block are connected by an interference fit, and the mounting base is riveted to a mounting ear, which is fixedly connected to a rotating shaft.

[0016] The beneficial effects of the present invention are as follows: 1. By embedding the fixed base into the fixed plate and then extending the movable piece as an extension arm to the outside of the fixed base and connecting and fixing it with the movable fan, the hinge can be hidden from the outside when the movable fan is open, and the movable piece can be retracted into the receiving slot in the fixed base from the inside when the movable fan is closed, so as to avoid occupying the storage space inside the movable fan.

[0017] 2. The mounting base moves within the receiving groove of the fixed base to adjust the gap between the movable fan and the fixed plate when the movable fan is closed, as well as the relative height of the movable fan, so that the movable fan and the fixed plate can fit tightly together, improving the installation and adjustment adaptability of the movable fan. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the active sector in the closed state according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the overall structure of the active fan in the open state according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the overall structure of the hinge in the open state according to an embodiment of this application;

[0021] Figure 4 This is a partial cross-sectional view of the fixing plate according to an embodiment of this application;

[0022] Figure 5 This is a partial cross-sectional view of the hinge structure according to an embodiment of this application;

[0023] Figure 6 This is an exploded view of the hinge mounting base and the connecting portion of the movable piece in an embodiment of this application.

[0024] Among them, 1. fixed base; 11. receiving groove; 14. first movable hole; 13. mounting port; 2. movable piece; 21. recess; 22. second notch; 3. rotating shaft; 31. mounting hole; 32. first notch; 4. elastic dustproof piece; 41. mounting piece; 5. mounting base; 51. first screw; 52. first head; 53. first adjusting groove; 54. connecting piece; 541. folded edge; 55. second screw; 56. guide groove; 57. second adjusting groove; 58. mounting ear; 6. adjusting rod; 61. adjusting block; 62. third adjusting groove; 101. fixed plate; 102. movable fan; 103. groove. Detailed Implementation

[0025] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0026] This invention provides an outward-opening, concealed hinge to solve the problem of bulky hinge structures that affect internal space in current outward-opening fan designs. (See also...) Figure 1 , 2 The assembly includes a fixed base 1 and a movable piece 2. The fixed base 1 is fixedly installed on the edge of the fixed plate 101 using tools such as rivets and screws. A groove 103 adapted to the shape of the fixed base 1 is drilled and milled on the fixed plate 101 so that the fixed base 1 is completely embedded in the fixed plate 101 when installed. In the installed state, a receiving groove 11 is opened on the exposed surface of the fixed base 1. A rotating shaft 3 is provided in the receiving groove 11. The rotating shaft 3 is parallel to the gap between the outwardly opening movable fan 102 and the fixed plate 101. The movable piece 2 is made of metal sheet by machine. One end of the movable piece 2 is bent into a cylinder and rotated and sleeved on the rotating shaft 3. The other end of the movable piece 2 can be fixed to the inner side of the movable fan 102 by means of screw connection, riveting, etc. The recess 21 extends the movable piece 2 into the receiving groove 11 to connect to the inner side of the movable fan 102. When the movable fan 102 rotates open relative to the fixed plate 101, the arm extended from the recess 21 fits against the inner side of the movable fan 102, causing the movable fan 102 to flip out around the edge of the fixed plate 101. When the movable fan 102 rotates closed relative to the fixed plate 101, the recess 21 of the movable piece 2 is retracted into the receiving groove 11, leaving only the connection between the movable piece 2 and the fixed plate 101 exposed. By processing the movable fan 102 so that the connection between the movable piece 2 and the movable fan 102 is embedded within the movable fan 102, the joint between the movable fan 102 and the fixed plate 101 when closed at a right angle is flush with a right angle, avoiding the hinge's impact on the interior space of the furniture. Furthermore, the hinge structure is simple, and the hinge cannot be directly observed from the outside, resulting in an aesthetically pleasing appearance after installation.

[0027] Furthermore, an elastic dustproof sheet 4 can be provided between the fixed base 1 and the movable piece 2. Each end of the elastic dustproof sheet 4 is fixed with a mounting piece 41. The two mounting pieces 41 can be detachably connected to the side of the movable piece 2 facing away from the recess 21 and the opening side of the receiving groove 11 of the fixed base 1, away from the edge of the fixed plate 101. Specifically, the elastic dustproof sheet 4 can be an elastic braided strip or a rubber strip, and the mounting piece 41 can be a U-shaped metal clip that clamps and fixes the end of the elastic dustproof sheet 4. A screw passes through the mounting piece 41, and the screw is then threadedly connected to the movable piece 2 or the fixed base 1, thereby fixing the mounting piece 41 to the movable piece 2 or the fixed base 1.

[0028] By incorporating the elastic dustproof sheet 4, when the movable fan 102 is open, the elastic dustproof sheet 4 seals the opening of the receiving groove 11, effectively preventing debris or human hands from entering the receiving groove 11 and causing damage to objects or injury to hands when the movable fan 102 is closed, thus improving hinge safety. Furthermore, the elastic dustproof sheet 4 reduces the amount of dust or dirt entering the receiving groove 11, keeping the internal structure of the hinge clean for a longer period and extending the hinge's lifespan.

[0029] Furthermore, the fixed base 1 also includes a mounting base 5, which is located within the receiving groove 11. The rotating shaft 3 is fixed to the mounting base 5. The mounting base 5 can move relative to the fixed base 1 along the depth direction of the receiving groove 11, and can also move relative to the fixed base 1 in a direction parallel to the surface of the fixed plate 101 and perpendicular to the axis of the rotating shaft 3. The fixed base 1 is provided with a first limiting device for limiting the position of the mounting base 5 parallel to the inner bottom wall of the receiving groove 11 and perpendicular to the axis of the rotating shaft 3, and a second limiting device for limiting the movement of the mounting base 5 relative to the depth direction of the receiving groove 11. By adjusting the first and second limiting devices, the position of the mounting base 5 within the receiving groove 11 can be slightly adjusted, so that the operator can appropriately adjust the position of the rotating shaft 3 in the hinge according to the installation gap and horizontal deviation between the movable fan 102 and the fixed plate 101, so that the movable fan 102 can achieve a better sealing effect after closing.

[0030] Reference Figure 4 Specifically, the first limiting device includes a first screw 51. A first movable hole 14 communicating with the receiving groove 11 is provided on the side of the fixed seat 1 away from the rotating shaft 3. The first screw 51 is movably connected within the first movable hole 14. One end of the first screw 51 extends out of the fixed seat 1 and is integrally fixedly connected to a first head 52. The other end of the first screw 51 passes through the edge of the mounting seat 5 and is threadedly connected to the mounting seat 5. A first adjusting groove 53 for wrench adjustment is provided at the end of the first screw 51 away from the first head 52. A guide groove adapted to the first head 52 is provided on the inner wall of the groove 103 on the fixed plate 101 for mounting the fixed seat 1. Both the guide groove and the first movable hole 14 on the fixed seat 1 are strip-shaped holes extending along the depth direction of the receiving groove 11. When the fixed seat 1 is installed on the fixed plate 101, the first head 52 is restricted by the fixed plate 101 and can only slide along the length direction of the guide groove, while its axial movement along the first movable hole 14 is restricted.

[0031] Reference Figure 5The second limiting device includes a connecting piece 54 and a second screw 55. The connecting piece 54 is located on the side of the mounting base 5 near the inner bottom wall of the receiving groove 11. The side of the mounting base 5 near the connecting piece 54 has a guide groove 56 along the depth direction of the receiving groove 11. A threaded hole is formed through the mounting base 5 along the depth direction of the receiving groove 11, and the threaded hole extends into the guide groove 56. The second screw 55 is rotatably mounted on the connecting piece 54. The second screw 55 passes through the threaded hole and is threadedly connected to the threaded hole. The width of the connecting piece 54 is the same as that of the guide groove 56, so that the connecting piece 54 can slide relative to the mounting base 5 along the depth direction of the guide groove 56. The connecting piece 54 is slidably connected to the inner bottom wall of the receiving groove 11 perpendicular to the axis of the rotating shaft 3. The mounting base 5 is slidably connected to the fixed base 1 through the connecting piece 54.

[0032] Reference Figure 6 A mounting opening 13 is provided at the bottom of the fixed base 1, penetrating into the receiving groove 11. The cross-section of the mounting opening is trapezoidal, and the trapezoidal inclined surface of the mounting opening 13 is parallel to the sliding direction of the connecting piece 54. The long side of the trapezoid of the mounting opening 13 is located on the side of the fixed base 1 away from the receiving groove 11. The connecting piece 54 passes through the mounting opening 13, and the two sides of the connecting piece 54 have folded edges 541 that correspond to and fit the trapezoidal inclined surfaces on both sides of the mounting opening 13. When installing the hinge, the connecting piece 54 is inserted into the mounting opening 13 of the fixed base 1, and then the mounting base 5 is connected to the second screw 55 and the first screw 51 in sequence, thus completing the basic assembly of the hinge. Then, the fixed base 1 is installed into the groove 103 of the fixed plate 101. The inner wall of the groove 103 can be used to limit the position of the connecting piece 54 and the first screw 51, thus completing the overall mating installation of the hinge.

[0033] Workers can use a hex wrench to rotate and adjust the first screw 51 and the second screw 55. When adjusting the first screw 51, the hex wrench is inserted into the first adjusting groove 53 of the first screw 51, and rotating the wrench allows the first screw 51 to engage with the mounting base 5 threadedly, causing the mounting base 5 to move laterally within the receiving groove 11. This adjusts the gap width between the movable fan 102 and the fixed plate 101 when the fixed plate 101 is closed. Next, the hex wrench is inserted into the second groove of the second screw 55, and the threaded engagement between the second screw 55 and the mounting base 5 adjusts the relative position between the connecting piece 54 and the mounting base 5, thereby adjusting the lateral relative position between the movable fan 102 and the fixed plate 101 when the fan is closed.

[0034] Furthermore, the movable piece 2 is axially slidably connected to the rotating shaft 3, and the mounting base 5 is also provided with a third limiting device for restricting the position of the movable piece 2. Specifically, the third limiting device includes an adjusting rod 6 and an adjusting block 61. The mounting base 5 has a mounting hole 31 that coaxially passes through the rotating shaft 3. The rotating shaft 3 is interrupted in the middle with a first notch 32. The movable piece 2 has a second notch 22 with a width smaller than the first notch 32. The adjusting block 61 is movably disposed within the first notch 32 and the second notch 22. The adjusting block 61 and the second notch 22 are of equal width. Both ends of the adjusting block 61 are connected to adjusting rods 6. The adjusting rods 6 pass through the mounting hole 31 and are threadedly connected to the mounting hole 31. At least one adjusting rod 6 passes through the mounting hole 31 and has a third adjusting groove 62 at its end for adjustment by a wrench.

[0035] By inserting a hex wrench into the third adjustment groove 62 of the adjustment rod 6 and rotating the hex wrench, the adjustment rod 6 can be rotated. In turn, the adjustment block 61 drives the movable piece 2 to move axially relative to the rotating shaft 3, thereby finely adjusting the relative height of the movable fan 102 relative to the fixed plate 101.

[0036] The adjusting rod 6 and the adjusting block 61 are fixed by an interference fit. The mounting base 5 is also fixedly connected with a mounting ear 58 by rivets. The mounting ear 58 is integrally fixedly connected to a rotating shaft 3. During hinge processing, the two adjusting rods 6 and the adjusting block 61 are integrally formed. One adjusting rod 6 has an external thread on its outer wall to allow it to be threadedly connected to the rotating shaft 3. First, the adjusting block 61 is inserted into the second notch 22 on the movable piece 2. Then, the two adjusting rods 6 are aligned, passed through the movable piece 2, and fixed to the adjusting block 61 with an interference fit. Next, the movable piece 2 and the adjusting rods 6 are connected and fixed to the rotating shaft 3 on the mounting base 5. Then, the mounting ear 58 is threaded onto the movable piece 2 and the adjusting rod 6. After the mounting ear 58 is aligned with the rivet position on the mounting base 5, the mounting base 5 and the mounting ear 58 are fixed together by rivets, completing the hinge assembly operation.

[0037] Those skilled in the art will understand that although preferred embodiments of the invention have been described, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention. Clearly, those skilled in the art can make various alterations and modifications to the invention without departing from its spirit and scope. Thus, if these modifications and modifications of the invention fall within the scope of the claims of the invention and their equivalents, the invention also intends to include these modifications and modifications.

Claims

1. An outward-opening concealed hinge, characterized in that, The device includes a fixing seat (1) for fixing to the upper edge of a fixing plate (101) and a movable piece (2) for fixing to a movable fan (102). The fixing seat (1) has a receiving groove (11) embedded in the fixing plate (101). A rotating shaft (3) is provided in the receiving groove (11). One end of the movable piece (2) away from the movable fan (102) extends into the receiving groove (11) and is rotatably connected to the rotating shaft (3). The movable piece (2) has a bent recess (21) through which the movable piece (2) extends out of the receiving groove (11) to connect to the inner side of the movable fan (102). When the movable fan (102) rotates and closes relative to the fixing plate (101), the movable piece (2) rotates around the rotating shaft (3) and the recess (21) is embedded in the receiving groove (11). The fixed base (1) is provided with a mounting base (5), and the rotating shaft (3) is fixedly mounted on the mounting base (5). The mounting base (5) is movably mounted in the receiving groove (11) of the fixed base (1) relative to the fixed base (1). The fixed base (1) is provided with a first limiting device for limiting the position of the mounting base (5) parallel to the inner bottom wall of the receiving groove (11) and perpendicular to the axis of the rotating shaft (3). The fixed base (1) is provided with a second limiting device for limiting the movement of the mounting base (5) relative to the depth direction of the receiving groove (11). The first limiting device includes a first screw (51). The side of the fixed base (1) away from the rotating shaft (3) is provided with a groove (11) 1) A first movable hole (14) is connected, and the first screw (51) is movably connected in the first movable hole (14). One end of the first screw (51) passes through the fixed seat (1) and is fixedly connected to the first head (52). The fixed plate (101) restricts the first head (52) from moving axially along the first movable hole (14). The other end of the first screw (51) passes through the edge of the mounting seat (5) and is threadedly connected to the mounting seat (5). The end of the first screw (51) away from the first head (52) is provided with a first adjusting groove (53) for adjustment by a wrench. The second limiting device includes a connecting piece (54) and a second screw (55). The connecting piece (54) 4) On the side of the mounting base (5) near the bottom wall of the receiving groove (11), a guide groove (56) is provided on the side of the mounting base (5) near the connecting piece (54) along the depth direction of the receiving groove (11). The connecting piece (54) is slidably connected in the guide groove (56) along the depth direction of the guide groove (56). The second screw (55) is vertically rotatably connected to the side of the connecting piece (54) near the mounting base (5). The second screw (55) passes through the mounting base (5) and is rotatably connected to the mounting base (5). The end of the second screw (55) away from the connecting piece (54) is provided with a second adjusting groove (57) for adjustment by a wrench. The mounting base (5) is connected to the connecting piece (54) via the connecting piece (54) 54) It is slidably connected to the fixed seat (1). The first movable hole (14) is a strip hole extending along the depth direction of the receiving groove (11). The bottom of the fixed seat (1) is provided with an installation port (13) that penetrates into the receiving groove (11). The cross section of the installation port (13) is trapezoidal. The trapezoidal inclined surface of the installation port (13) is parallel to the sliding direction of the connecting piece (54). The long side of the trapezoid of the installation port (13) is located on the side of the fixed seat (1) away from the receiving groove (11). The connecting piece (54) passes through the installation port (13). The two sides of the connecting piece (54) are provided with folded edges (541) that correspond one-to-one with the trapezoidal inclined surfaces on both sides of the installation port (13). The movable piece (2) is axially slidably connected to the rotating shaft (3). The mounting base (5) is provided with a third limiting device for limiting the position of the movable piece (2). The third limiting device includes an adjusting rod (6) and an adjusting block (61). The mounting base (5) is provided with a mounting hole (31) that coaxially passes through the rotating shaft (3). The rotating shaft (3) is interrupted in the middle with a first notch (32). The movable piece (2) is provided with a second notch with a width smaller than the first notch (32). (22) The adjusting block (61) is movably disposed in the first notch (32) and the second notch (22). The adjusting block (61) and the second notch (22) are of equal width. Both ends of the adjusting block (61) are connected to adjusting rods (6). The adjusting rods (6) pass through the mounting hole (31) and are threadedly connected to the mounting hole (31). At least one adjusting rod (6) passes through the mounting hole (31) and a third adjusting groove (62) for wrench adjustment is provided at the end of the adjusting rod (6).

2. The outward-opening concealed hinge according to claim 1, characterized in that, An elastic dustproof sheet (4) is provided between the fixed base (1) and the movable piece (2). Both ends of the elastic dustproof sheet (4) are fixed with mounting pieces (41). The mounting piece (41) at one end of the elastic dustproof sheet (4) is detachably connected to the side of the movable piece (2) facing away from the recess (21), and the other end is detachably connected to the side of the fixed base (1) away from the edge of the fixed plate (101) on the side of the opening of the receiving groove (11).

3. The outward-opening concealed hinge according to claim 1, characterized in that, The adjusting rod (6) is interference-fitted with the adjusting block (61), and the mounting base (5) is riveted and fixed with a mounting ear (58), which is fixedly connected to a rotating shaft (3).

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