A concealed adjustable hinge

Abstract

The utility model discloses a hidden type adjustable hinge, include: hinge, the both ends of hinge are hinged respectively with first rotation subassembly and second rotation subassembly, first base is connected with first rotation subassembly, and hinge drives first rotation subassembly to rotate after rotating, second base is connected with second rotation subassembly, and hinge is driven to rotate through second rotation subassembly, mounting panel is equipped with first adjusting hole, first adjusting screw, passes through first adjusting hole and is connected with first base screw thread to with mounting panel and first base mutual fixed, and first base can move relative to mounting panel through the cooperation of first adjusting screw and first adjusting hole. When using the hidden type adjustable door hinge installation door provided by the utility model, if the deviation of the gap between the door body and the door frame appears, the relative movement between the mounting plate and the first base can be adjusted by unscrewing the first adjusting screw, so that the installation position of the door body is adjusted, thereby the deviation is corrected, and the efficiency and convenience of door installation are improved.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and in particular to a concealed adjustable hinge. Background Technology

[0002] Hinges are common door and window hardware, typically used for the rotating connection between door and window frames and sashes. When installing a door, a proper gap usually needs to be maintained between the door and the frame. However, installers may not drill precisely enough or the holes may be misaligned, leading to installation discrepancies after the door and frame are connected via hinges, causing inconvenience during installation.

[0003] Therefore, the existing technology still needs to be improved and enhanced. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a concealed adjustable hinge, which aims to solve the problem that in the prior art, when door installers drill holes, the hole positions are sometimes not precise enough or have deviations, resulting in installation deviations between the door body and the door frame after installation through the hinge, causing inconvenience to the installation.

[0005] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0006] In a first aspect, embodiments of the present invention provide a concealed adjustable hinge, comprising:

[0007] A hinge, wherein a first rotating assembly and a second rotating assembly are respectively hinged to both ends of the hinge;

[0008] A first base is connected to the first rotating assembly, and the hinge rotates to drive the first rotating assembly to rotate.

[0009] The second base is connected to the second rotating assembly and drives the hinge to rotate through the second rotating assembly;

[0010] Mounting plate, wherein the mounting plate is provided with a first adjustment hole;

[0011] A first adjusting screw passes through the first adjusting hole and is threadedly connected to the first base to fix the mounting plate and the first base to each other. The first base can move relative to the mounting plate through the cooperation of the first adjusting screw and the first adjusting hole.

[0012] Furthermore, the aforementioned concealed adjustable hinge also includes:

[0013] The first rotating assembly is provided with a second adjusting hole, and the second adjusting screw passes through the first adjusting hole and is threadedly connected to the first base to fix the first rotating assembly and the first base to each other. The first base can move relative to the first rotating assembly through the cooperation of the second adjusting screw and the second adjusting hole.

[0014] Both the first adjustment hole and the second adjustment hole are elongated holes, located on the same vertical horizontal plane and perpendicular to each other.

[0015] Furthermore, the aforementioned concealed adjustable hinge also includes:

[0016] The third adjusting screw; the second base has a built-in cavity with an opening on one side, the second rotating assembly is slidably disposed in the cavity of the second base, one end of the third adjusting screw is rotatably fixed on the second base, and the other end of the third adjusting screw is threadedly connected to the second rotating assembly to drive the second rotating assembly to slide along the third adjusting screw, and the third adjusting screw is arranged along the horizontal plane.

[0017] Furthermore, the hinge includes:

[0018] The first leaf piece, one end of which is connected to the first rotating assembly, and the other end of which is hinged to the second rotating assembly;

[0019] The second leaf piece has one end hinged to the first rotating assembly and the other end connected to the second rotating assembly;

[0020] A first pivot is used to hinge the middle portion of the first sheet to the middle portion of the second sheet.

[0021] Furthermore, the first rotating assembly includes:

[0022] Two first hinge seats are disposed opposite each other at both ends of the first base. Each of the two first hinge seats is provided with a second adjustment hole, and each second adjustment hole is provided with a second adjustment screw that is threadedly connected to the first base.

[0023] The first connecting shaft has opposing first sliding grooves on opposite sides of the two first hinge seats. The two ends of the first connecting shaft are slidably disposed in the two first sliding grooves, and the first connecting shaft passes through one end of the first leaf.

[0024] The second rotating shaft has its two ends respectively disposed on the two first hinge seats, and the two first hinge seats are hinged to one end of the second leaf through the second rotating shaft;

[0025] The first link has its two ends connected to the two first hinge seats respectively.

[0026] Furthermore, the second rotating assembly includes:

[0027] Two second hinge seats are respectively disposed opposite to each other at both ends of the second base. Each of the two second hinge seats is provided with a third adjustment hole, and a third adjustment screw that is rotatably connected to the second base is threaded into each of the third adjustment holes.

[0028] The second connecting shaft has two opposing second sliding grooves on opposite sides of the two second hinge seats. The two ends of the second connecting shaft are slidably disposed in the two second sliding grooves, and the second connecting shaft passes through the other end of the second leaf.

[0029] The third rotating shaft has its two ends respectively disposed on the two second hinge seats, and the two second hinge seats are hinged to the other end of the first leaf through the third rotating shaft;

[0030] The second link has its two ends connected to the two second hinge seats respectively.

[0031] Furthermore, the first base has a built-in cavity and an opening on one side, and the two first hinge seats are respectively disposed at both ends of the cavity of the first base, and there is a gap between the two first hinge seats and the inner wall of the first base.

[0032] The first base has a first serrated surface at both ends of its cavity, and a toothed bar is rotatably connected to each of the two first hinge seats. Each toothed bar corresponds to and meshes with each of the first serrated surfaces.

[0033] Furthermore, a first fixing screw is movably provided on the mounting plate, a second serrated surface is provided on the side of the mounting plate near the first base, and a third serrated surface is provided on the first base, with the first serrated surface engaging with the second serrated surface.

[0034] Furthermore, a second fixing screw is movably provided on the second base.

[0035] Furthermore, the aforementioned concealed adjustable hinge also includes:

[0036] A first cover plate is fixed to the first base by screws to cover the first adjusting screw, the second adjusting screw and the first fixing screw;

[0037] The second cover plate is fixed to the second base by screws to cover the third adjusting screw and the second fixing screw.

[0038] Compared with the prior art, the embodiments of this utility model have the following advantages:

[0039] This utility model embodiment provides a concealed adjustable hinge, comprising: a hinge, with a first rotating component and a second rotating component respectively hinged to both ends; a first base, the first base being connected to the first rotating component, the hinge rotating causing the first rotating component to rotate; a second base, the second base being connected to the second rotating component, and the second rotating component driving the hinge to rotate; a mounting plate, the mounting plate having a first adjustment hole; and a first adjustment screw, the first adjustment screw passing through the first adjustment hole and threadedly connected to the first base to fix the mounting plate and the first base to each other, the first base being movable relative to the mounting plate through the cooperation of the first adjustment screw and the first adjustment hole. The mounting plate in this invention is used to fix the door to the side of the door frame. The first base is movably embedded in the side of the door frame, and the second base is movably embedded in the side of the door body. When installing a door using the concealed adjustable door hinge provided by this invention, if there is a deviation in the gap between the door body and the door frame, the installation position of the door body can be adjusted by loosening the first adjusting screw, allowing the mounting plate and the first base to move relative to each other. After adjusting the position, the first adjusting screw is tightened to fix the mounting plate and the first base together, thereby correcting the deviation in time and improving the efficiency and convenience of door installation. Attached Figure Description

[0040] Figure 1 A first three-dimensional structural schematic diagram of a concealed adjustable hinge provided by this utility model;

[0041] Figure 2 This is a three-dimensional structural diagram of the mounting plate in this utility model;

[0042] Figure 3 This is an exploded view of the hinge in this utility model;

[0043] Figure 4 This is a schematic diagram of the assembly structure of the first rotating component, the second rotating component, and the hinge in this utility model;

[0044] Figure 5 This is an exploded view of the first rotating component, the second rotating component, and the hinge assembled in this utility model;

[0045] Figure 6 This is a three-dimensional structural diagram of the first rotating component in this utility model;

[0046] Figure 7 This is a three-dimensional structural diagram of the second rotating component in this utility model;

[0047] Figure 8This is a three-dimensional structural diagram of the second base in this utility model;

[0048] Figure 9 This is a three-dimensional structural diagram of the first base in this utility model;

[0049] Figure 10 This is a schematic diagram of a second three-dimensional structure of a concealed adjustable hinge provided by this utility model.

[0050] In the diagram: 1. Hinge; 101. First leaf piece; 102. Second leaf piece; 103. First pivot; 2. First rotating assembly; 201. First hinge seat; 2011. Second adjusting hole; 2012. First slide groove; 202. First connecting shaft; 203. Second pivot; 204. First connecting rod; 3. Second rotating assembly; 301. Second hinge seat; 3011. Third adjusting hole; 3012. Second slide groove; 302. Second connecting shaft; 303. Third... 304. Rotating shaft; 4. Second connecting rod; 5. First base; 6. First serrated surface; 7. Third serrated surface; 8. Mounting plate; 9. First adjusting screw; 10. Second adjusting screw; 11. Third adjusting screw; 12. Gear rod; 13. First fixing screw; 14. Second fixing screw; 15. First baffle; 16. Second baffle. Detailed Implementation

[0051] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0052] Example:

[0053] Please see Figures 1-10 The concealed adjustable hinge includes: a hinge 1, with a first rotating component 2 and a second rotating component 3 hinged to its two ends respectively; a first base 4, connected to the first rotating component 2, which rotates when the hinge 1 rotates; a second base 5, connected to the second rotating component 3, which in turn rotates the hinge 1; a mounting plate 6, with a first adjusting hole 601; and a first adjusting screw 7, which passes through the first adjusting hole 601 and is threadedly connected to the first base 4 to fix the mounting plate 6 and the first base 4 together. The first base 4 can move relative to the mounting plate 6 through the cooperation of the first adjusting screw 7 and the first adjusting hole 601.

[0054] like Figure 1 and Figure 2 As shown, in this embodiment, the concealed adjustable hinge includes a hinge 1, a first rotating assembly 2, a second rotating assembly 3, a first base 4, a second base 5, a mounting plate 6, and a first adjusting screw 7. The first rotating assembly 2 is hinged to the left end of the hinge 1, the second rotating assembly 3 is hinged to the right end of the hinge 1, the first base 4 is detachably and fixedly connected to the first rotating assembly 2, and when the hinge 1 rotates relative to the first base 4 via the first rotating assembly 2, the hinge 1 will drive the first base 4 to rotate via the first rotating assembly 2. The second base 5 is detachably and fixedly connected to the second rotating assembly 3, and the second base 5 rotates relative to the right end of the hinge 1 via the second rotating assembly 3. When in motion, the second base 5 will drive the hinge 1 to rotate through the second rotating assembly 3; one end of the mounting plate 6 is used to fix it on the door frame, and the other end is used to connect the first base 4. The mounting plate 6 is provided with a first adjustment hole 601. The first adjustment screw 7 passes through the first adjustment hole 601 and is threadedly connected to the first base 4 to fix the mounting plate 6 and the first base 4 to each other. The first base 4 can move relative to the mounting plate 6 through the cooperation of the first adjustment screw 7 and the first adjustment hole 601. When the first base 4 moves relative to the mounting plate 6, the first base 4, the first rotating assembly 2, the hinge 1, the second rotating assembly 3, the second base 5, and the door body form a whole and move simultaneously. In this embodiment, the shape of the first adjustment hole 601 can be elongated, cross-shaped, or star-shaped, etc., and is not limited here. For example, when the first adjustment hole 601 is elongated, if it is distributed vertically, it can be used to assist the door body in vertical adjustment; if it is distributed horizontally, it can be used to assist the door body in horizontal adjustment. For example, when the first adjustment hole 601 is cross-shaped, it can assist the door body in vertical or horizontal adjustment; if the first adjustment hole 601 is star-shaped, it can assist the door body in four-directional adjustment. The width of the first adjustment hole 601 is smaller than the width of the head of the first adjustment screw 7, and the head of the first adjustment screw 7 is provided with a hexagonal groove to facilitate turning the first adjustment screw 7. In this invention, the first base 4 is used to be movably embedded in the door frame, that is, the door frame embedding groove is larger than the first base 4. The mounting plate 6 is used to be fixed on the door frame. The second base 5 is used to be movably embedded in the door panel, that is, the door panel embedding groove is larger than the second base 5. When installing a door using the concealed adjustable door hinge provided by this invention, if there is a deviation in the gap between the door body and the door frame, the installation position of the door body can be adjusted by loosening the first adjusting screw 7 to allow the mounting plate 6 and the first base 4 to move relative to each other. After adjusting the position, the first adjusting screw 7 is tightened to fix the mounting plate 6 and the first base 4 to each other, thereby correcting the deviation in time and improving the efficiency and convenience of door installation.

[0055] Furthermore, the concealed adjustable hinge also includes a second adjusting screw 8; the first rotating component 2 is provided with a second adjusting hole 2011, the second adjusting screw 8 passes through the first adjusting hole 601 and is threadedly connected to the first base 4 to fix the first rotating component 2 and the first base 4 to each other, and the first base 4 can move relative to the first rotating component 2 through the cooperation of the second adjusting screw 8 and the second adjusting hole 2011; the first adjusting hole 601 and the second adjusting hole 2011 are both elongated holes, and are located on the same vertical horizontal plane and perpendicular to each other.

[0056] Specifically, the width of the second adjusting hole 2011 is smaller than the head of the second adjusting screw 8, and the head of the second adjusting screw 8 is provided with a hexagonal groove to facilitate turning the second adjusting screw 8; and both the second adjusting hole 2011 and the first adjusting hole 601 are elongated, the first adjusting hole 601 is opened vertically, and the second adjusting hole 2011 is opened horizontally, that is, after loosening the first adjusting screw 7, the base connected to the second base 5 can be adjusted in the vertical direction, and after loosening the second adjusting screw 8, the base connected to the second base 5 can be adjusted in the horizontal direction.

[0057] Furthermore, the concealed adjustable hinge also includes: a third adjusting screw 9; the second base 5 has a built-in cavity with an opening on one side, the second rotating component 3 is slidably disposed in the cavity of the second base 5, one end of the third adjusting screw 9 is rotatably fixed on the second base 5, and the other end of the third adjusting screw 9 is threadedly connected to the second rotating component 3 to drive the second rotating component 3 to slide along the third adjusting screw 9, and the third adjusting screw 9 is arranged along the horizontal plane.

[0058] Specifically, a first baffle 15 and a second baffle 16 are fitted onto one end of the third adjusting screw 9, respectively. The first baffle 15 and the second baffle 16 are fixedly connected to the third adjusting screw 9, with a gap between them. The first baffle 15 is disposed within the cavity of the second base 5 and abuts against the inner side of the second base 5, while the second baffle 16 abuts against the outer side of the second base 5. The first baffle 15 and the second baffle 16 can be connected to the third adjusting screw 9 by means of threaded connection or welding, and thus limit the movement of the third adjusting screw 9. Alternatively, only the second baffle 16 is provided on the third adjusting screw 9, with the threaded end of the other end of the third adjusting screw 9 abutting against the inner side of the second base 5, and the second baffle 16 abutting against the outer side of the second base 5. The threaded end of the third adjusting screw 9 and the second baffle 16 limit the third adjusting screw 9 to the second base 5. Simultaneously... The other end of the third adjusting screw 9 passes through the second rotating assembly 3 and is threadedly connected to the second rotating assembly 3. The end face of the other end of the third adjusting screw 9 is provided with a hexagonal groove to facilitate the rotation of the third adjusting screw 9. The third adjusting screw 9 drives the second rotating assembly 3 to slide in the second base 5 in the front-back direction by rotating forward or backward, thereby adjusting the position of the base connected to the first base 4 in the front-back direction.

[0059] like Figures 3-5 As shown, in this embodiment, the hinge 1 includes a first leaf 101, one end of which is connected to the first rotating assembly 2 for the first rotating assembly 2 to drive the first leaf 101 to rotate, and the other end of which is hinged to the second rotating assembly 3 for the first leaf 101 to rotate relative to the second rotating assembly 3; a second leaf 102, one end of which is hinged to the first rotating assembly 2 for the second leaf 102 to rotate relative to the first rotating assembly 2, and the other end of which is connected to the second rotating assembly 3 for the second rotating assembly 3 to drive the second leaf 102 to rotate; and a first pivot 103, through which the middle portion of the first leaf 101 and the middle portion of the second leaf 102 are hinged for the opening and closing of the first leaf 101 and the second leaf 102. The hinge 1 in this embodiment can also be a conventional folding hinge 1.

[0060] like Figure 6As shown, the first rotating assembly 2 further includes two first hinge seats 201, a first connecting shaft 202, a second rotating shaft 203, and a first connecting rod 204. The two first hinge seats 201 are disposed opposite each other at both ends of the first base 4. The two first hinge seats 201 are respectively provided with second adjustment holes 2011, and each second adjustment hole 2011 is provided with a second adjustment screw 8 threadedly connected to the first base 4. The opposite sides of the two first hinge seats 201 are respectively provided with opposite first sliding grooves 2012. The two ends of the first connecting shaft 202 are respectively slidably disposed in the two first sliding grooves 2012, and the first connecting shaft 202 passes through one end of the first leaf 101. The two ends of the second rotating shaft 203 are respectively disposed on the two first hinge seats 201, and the two first hinge seats 201 are hinged to one end of the second leaf 102 through the second rotating shaft 203. The two ends of the first connecting rod 204 are respectively connected to the two first hinge seats 201. Specifically, when the first base 4 rotates relative to the hinge 1, the first base 4 rotates relative to the left end of the second leaf 102 through the second rotating shaft 203. The first connecting shaft 202 slides in the first sliding groove 2012 and the first base 4 drives the first leaf 101 to rotate through the first connecting shaft 202. The first connecting rod 204 plays a connecting and supporting role for the two first hinge seats 201.

[0061] like Figure 7 and Figure 8 As shown, further, the second rotating assembly 3 includes two second hinge seats 301, a second connecting shaft 302, a third rotating shaft 303, and a second connecting rod 304. The two second hinge seats 301 are respectively disposed opposite to each other at both ends of the second base 5. Each of the two second hinge seats 301 is provided with a third adjusting hole 3011, and a third adjusting screw 9 rotatably connected to the second base 5 is threaded into each of the third adjusting holes 3011. Opposite sides of the two second hinge seats 301 are respectively provided with opposite second sliding grooves 3012. The two ends of the second connecting shaft 302 are respectively slidably disposed in the two second sliding grooves 3012, and the second connecting shaft 302 passes through the other end of the second leaf 102. The two ends of the third rotating shaft 303 are respectively disposed on the two second hinge seats 301, and both second hinge seats 301 are hinged to the other end of the first leaf 101 through the third rotating shaft 303. The two ends of the second connecting rod 304 are respectively connected to the two second hinge seats 301. Specifically, when the second base 5 rotates relative to the hinge 1, the second base 5 rotates relative to the right end of the first leaf 101 through the third rotating shaft 303. The second connecting shaft 302 slides in the second sliding groove 3012 and the second base 5 drives the second leaf 102 to rotate through the second connecting shaft 302. The second connecting rod 304 plays a connecting and supporting role for the two second hinge seats 301.

[0062] like Figure 9 As shown, in this embodiment, the first base 4 has a built-in cavity with an opening on one side. Two first hinge seats 201 are respectively disposed at both ends of the cavity of the first base 4. There is a gap between the two first hinge seats 201 and the inner wall of the first base 4 to facilitate relative movement between the first rotating assembly 2 and the first base 4. The two ends of the cavity of the first base 4 are respectively provided with first serrated surfaces 401. A toothed bar 10 is rotatably connected to each of the two first hinge seats 201. An arc-shaped limiting groove (not shown) adapted to the toothed bar 10 can be provided on the first hinge seat 201. The rack 10 is placed in the arc-shaped limiting groove and can rotate freely, or a rotating shaft is set on the first hinge seat 201, and the rack 10 is sleeved on the rotating shaft to achieve rotation. Each rack 10 corresponds to and meshes with each first sawtooth surface 401. When the second adjusting screw 8 is tightened, the cooperation between the rack 10 and the first sawtooth surface 401 can enhance the connection stability between the first base 4 and the first hinge seat 201. When the second adjusting screw 8 is loosened, the cooperation between the first sawtooth surface 401 and the rack 10 can guide the lateral movement of the first rotating component 2.

[0063] Furthermore, a first fixing screw 11 is movably provided on the mounting plate 6. The mounting plate 6 can be fixed to the door frame or other base through the first fixing screw 11. A second serrated surface 602 is provided on the side of the mounting plate 6 near the first base 4. The first base 4 is provided with a third serrated surface 402. The first serrated surface 401 and the second serrated surface 602 mesh to enhance the connection stability between the mounting plate 6 and the first base 4.

[0064] Furthermore, a second fixing screw 12 is movably provided on the second base 5, which can fix the second base 5 to the door or other base.

[0065] like Figure 10 As shown, in this embodiment, the concealed adjustable hinge further includes a first cover plate 13 and a second cover plate 14. The first cover plate 13 is fixed to the first base 4 by screws to cover and protect the first adjusting screw 7, the second adjusting screw 8, and the first fixing screw 11. The second cover plate 14 is fixed to the second base 5 by screws to cover and protect the third adjusting screw 9 and the second fixing screw 12. The first cover plate 13 and the second cover plate 14 also serve to enhance the appearance of the concealed adjustable hinge.

[0066] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0069] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0070] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0071] Of course, the above description of the embodiments of this utility model is quite detailed, but it should not be construed as a limitation on the scope of protection of this utility model. This utility model may have other various implementations. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model. The scope of protection of this utility model is subject to the appended claims.

Claims

1. A concealed adjustable hinge, characterized in that, include: A hinge, wherein a first rotating assembly and a second rotating assembly are respectively hinged to both ends of the hinge; A first base is connected to the first rotating assembly, and the hinge rotates to drive the first rotating assembly to rotate. The second base is connected to the second rotating assembly and drives the hinge to rotate through the second rotating assembly; Mounting plate, wherein the mounting plate is provided with a first adjustment hole; A first adjusting screw passes through the first adjusting hole and is threadedly connected to the first base to fix the mounting plate and the first base to each other. The first base can move relative to the mounting plate through the cooperation of the first adjusting screw and the first adjusting hole.

2. The concealed adjustable hinge according to claim 1, characterized in that, Also includes: The first rotating assembly is provided with a second adjusting hole, and the second adjusting screw passes through the first adjusting hole and is threadedly connected to the first base to fix the first rotating assembly and the first base to each other. The first base can move relative to the first rotating assembly through the cooperation of the second adjusting screw and the second adjusting hole. Both the first adjustment hole and the second adjustment hole are elongated holes, located on the same vertical horizontal plane and perpendicular to each other.

3. The concealed adjustable hinge according to claim 2, characterized in that, Also includes: The third adjusting screw; the second base has a built-in cavity with an opening on one side, the second rotating assembly is slidably disposed in the cavity of the second base, one end of the third adjusting screw is rotatably fixed on the second base, and the other end of the third adjusting screw is threadedly connected to the second rotating assembly to drive the second rotating assembly to slide along the third adjusting screw, and the third adjusting screw is arranged along the horizontal plane.

4. The concealed adjustable hinge according to claim 3, characterized in that, The hinge includes: The first leaf piece, one end of which is connected to the first rotating assembly, and the other end of which is hinged to the second rotating assembly; The second leaf piece has one end hinged to the first rotating assembly and the other end connected to the second rotating assembly; The first pivot is used to hinge the middle portion of the first sheet to the middle portion of the second sheet.

5. The concealed adjustable hinge according to claim 4, characterized in that, The first rotating assembly includes: Two first hinge seats are disposed opposite each other at both ends of the first base. Each of the two first hinge seats is provided with a second adjustment hole, and each second adjustment hole is provided with a second adjustment screw that is threadedly connected to the first base. The first connecting shaft has opposing first sliding grooves on opposite sides of the two first hinge seats. The two ends of the first connecting shaft are slidably disposed in the two first sliding grooves, and the first connecting shaft passes through one end of the first leaf. The second rotating shaft has its two ends respectively disposed on the two first hinge seats, and the two first hinge seats are hinged to one end of the second leaf through the second rotating shaft; The first link has its two ends connected to the two first hinge seats respectively.

6. The concealed adjustable hinge according to claim 4, characterized in that, The second rotating assembly includes: Two second hinge seats are respectively disposed opposite to each other at both ends of the second base. Each of the two second hinge seats is provided with a third adjustment hole, and a third adjustment screw that is rotatably connected to the second base is threaded into each of the third adjustment holes. The second connecting shaft has two opposing second sliding grooves on opposite sides of the two second hinge seats. The two ends of the second connecting shaft are slidably disposed in the two second sliding grooves, and the second connecting shaft passes through the other end of the second leaf. The third rotating shaft has its two ends respectively disposed on the two second hinge seats, and the two second hinge seats are hinged to the other end of the first leaf through the third rotating shaft; The second link has its two ends connected to the two second hinge seats respectively.

7. The concealed adjustable hinge according to claim 5, characterized in that, The first base has a built-in cavity and an opening on one side. The two first hinge seats are respectively disposed at both ends of the cavity of the first base, and there is a gap between the two first hinge seats and the inner wall of the first base. The first base has a first serrated surface at both ends of its cavity, and a toothed bar is rotatably connected to each of the two first hinge seats. Each toothed bar corresponds to and meshes with each of the first serrated surfaces.

8. The concealed adjustable hinge according to claim 3, characterized in that, The mounting plate is movably provided with a first fixing screw, and the mounting plate is provided with a second serrated surface on the side near the first base. The first base is provided with a third serrated surface, and the first serrated surface engages with the second serrated surface.

9. The concealed adjustable hinge according to claim 8, characterized in that, A second fixing screw is movably mounted on the second base.

10. The concealed adjustable hinge according to claim 9, characterized in that, Also includes: A first cover plate is fixed to the first base by screws to cover the first adjusting screw, the second adjusting screw and the first fixing screw; The second cover plate is fixed to the second base by screws to cover the third adjusting screw and the second fixing screw.

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