High edge adjustable invisible hinge

Abstract

The invention discloses a high-pass-edge adjustable invisible hinge which comprises a hinge box body and a connecting arm panel, an adjusting mounting groove is formed in the hinge box body in a concave mode, adjusting blocks are symmetrically installed on the two sides in the adjusting mounting groove, and a connecting arm assembly is movably connected between the adjusting blocks and the connecting arm panel. The connecting arm assembly comprises a first connecting arm, a second connecting arm and a third connecting arm, one end of the first connecting arm is connected with the connecting arm panel, one end of the second connecting arm is connected with the other end of the first connecting arm, one end of the third connecting arm is connected with the middle of the first connecting arm, and the other end of the third connecting arm is connected with the other end of the second connecting arm. The other end of the second connecting arm and the other end of the third connecting arm are respectively connected with the adjusting block. Through a rotating mechanism of the two-stage combination body, when the first-stage combination body conducts conventional rotating opening and closing, the second-stage combination body provides additional movement, the high edge passing effect is achieved, the bearing capacity is also greatly improved, and all installation requirements are met.

Description

Technical Field

[0001] The present invention belongs to the technical field of hinges, and particularly relates to a high over-edge adjustable invisible hinge. Background Art

[0002] As a modern door and window accessory, the invisible hinge has been widely used in high-end doors, windows, furniture and other fields due to its hidden design, especially in places pursuing a minimalist and tidy appearance. The invisible hinge can not only effectively improve the aesthetics of doors and windows, but also enhance the stability of the overall structure. However, there is a common technical problem with the invisible hinges on the current market - the distance from the slot to the edge is too small (usually 3 - 6 mm), which causes many practical problems in use and restricts the further development of the invisible hinge design.

[0003] First of all, the too small distance from the slot to the edge limits the selection and application of the decorative materials on the door leaf surface. For the need to attach thicker decorative boards (such as wooden decorative boards, leather or composite materials) to the door surface, the too small edge distance makes the door frame unable to bear the thicker decorative materials, greatly restricting the design function of the door. Especially in the market environment where the decorative needs are becoming more and more diverse and personalized, the demand for a larger edge distance from designers and users is increasing day by day, while the slot design of traditional invisible hinges cannot meet this demand.

[0004] Secondly, for solid wood doors, the too small slot edge distance also brings the risk of the door edge cracking. The material of solid wood doors is relatively fragile. When the slot distance is too small, the door edge is easily affected by uneven stress, resulting in the cracking or splitting of the door frame, affecting the service life and aesthetics of the door. Especially during the installation process, when the hinge slot position is too close to the door edge, the edge of the door body will bear a large shear force, easily causing material damage. For metal doors, the too small distance from the slot to the edge not only increases the processing difficulty, but also may lead to inaccurate hinge positions, thus affecting the stability and safety of the door.

[0005] In addition, for invisible hinges with slots not in the center position of the door frame, the door often has uneven stress during the force application process. This uneven stress makes the door prone to problems such as sagging and deformation, resulting in unsmooth opening and closing of the door, abnormal noises during use, and even accelerating the aging and damage of the door body. More seriously, due to the asymmetric installation of the hinges, the appearance effect of the door will also be affected, and phenomena such as the door leaf being skewed and misaligned may occur, destroying the original design intention of the invisible hinge to improve aesthetics and stability.

[0006] In view of this, overcoming the above-mentioned defects of the existing technology is an urgent problem to be solved in this technical field. Summary of the Invention

[0007] In view of the technical problems mentioned in the background art, the object of the present invention is to provide a [solution] to solve the technical problems mentioned in the above background art.

[0008] To achieve the above object, the technical solution provided by the present invention is: a highly adjustable over-edge invisible hinge, which includes a hinge box body and a connecting arm panel. An adjusting installation groove is recessed inside the hinge box body. Adjusting blocks are symmetrically installed on both inner sides of the adjusting installation groove. A connecting arm assembly is movably connected between the adjusting block and the connecting arm panel. The connecting arm assembly includes a first connecting arm, a second connecting arm, and a third connecting arm. One end of the first connecting arm is connected to the connecting arm panel. One end of the second connecting arm is connected to the other end of the first connecting arm. One end of the third connecting arm is connected to the middle of the first connecting arm. The other ends of the second connecting arm and the third connecting arm are respectively connected to the adjusting block.

[0009] Further, a first connecting slot is provided at the rear end of the first connecting arm. A first movable connecting portion is provided at the upper end of the second connecting arm. The first movable connecting portion is connected in the first connecting slot. A first connecting pin is connected between the first movable connecting portion and the first connecting slot. A first movable connecting hole is opened on the side wall of the adjusting block. A second movable connecting portion is provided at the lower end of the second connecting arm. The second movable connecting portion is arranged between the adjusting blocks. The second movable connecting portion corresponds to the first movable connecting hole. A second connecting pin is connected between the first movable connecting hole and the second movable connecting portion, so that the second connecting arm is movably connected between the first connecting arm and the adjusting block.

[0010] Further, a second connecting slot is opened in the middle of the first connecting arm. A first hinged connecting portion is provided at the upper end of the third connecting arm. The first hinged connecting portion is connected in the second connecting slot. A third connecting pin is connected between the first hinged connecting portion and the second connecting slot. A second movable connecting hole is opened on the side wall of the adjusting block. The second movable connecting hole is arranged above the first movable connecting hole. A second hinged connecting portion is provided at the lower end of the third connecting arm. The second hinged connecting portion is arranged between the adjusting blocks. The second hinged connecting portion corresponds to the second movable connecting hole. A fourth connecting pin is connected between the second hinged connecting portion and the second movable connecting hole, so that the third connecting arm is movably connected between the first connecting arm and the adjusting block.

[0011] Further, connecting jacks are symmetrically opened on the surface of the connecting arm panel. Connecting blocks are symmetrically protruded at the front end of the first connecting arm. The connecting blocks are correspondingly inserted into the connecting jacks, and the connecting blocks and the connecting jacks are fixed by welding.

[0012] Furthermore, first buffer rubber rings are symmetrically sleeved on both sides of the first connecting pin. The first buffer rubber rings are arranged between the first movable connecting part and the first connecting slot. Second buffer rubber rings are symmetrically sleeved on both sides of the second connecting pin. The second buffer rubber rings are arranged between the first movable connecting hole and the second movable connecting part. Third buffer rubber rings are symmetrically sleeved on both sides of the third connecting pin. The third buffer rubber rings are arranged between the first hinged connecting part and the second connecting slot. Fourth buffer rubber rings are symmetrically sleeved on both sides of the fourth connecting pin. The fourth buffer rubber rings are arranged between the second hinged connecting part and the second movable connecting hole.

[0013] Furthermore, adjustment grooves are symmetrically recessed on both sides of the adjustment installation groove. An up-and-down adjustment convex block is provided at the upper end of the adjustment block. The size of the adjustment groove is larger than that of the up-and-down adjustment convex block. The up-and-down adjustment convex block is embedded in the adjustment groove. An oval up-and-down adjustment perforation is formed on the surface of the up-and-down adjustment convex block. A circular fixing perforation is formed on the surface of the adjustment groove. The up-and-down adjustment perforation and the fixing perforation are correspondingly arranged, and an up-and-down adjustment screw is connected between the up-and-down adjustment perforation and the fixing perforation.

[0014] Furthermore, a front-and-back adjustment perforation is formed on the surface of the up-and-down adjustment convex block. A front-and-back adjustment screw is connected in the front-and-back adjustment perforation. The front-and-back adjustment screw passes through the front-and-back adjustment perforation and abuts and fixes against the adjustment groove. The size of the adjustment installation groove is larger than that of the adjustment block.

[0015] Furthermore, first installation perforations are respectively formed on both sides of the hinge box body, and second installation perforations are respectively formed on both sides of the connecting arm panel.

[0016] Furthermore, the box body decorative board and the hinge box body are fixedly adhered by glue, and the door leaf decorative board and the connecting arm panel are fixedly adhered by glue.

[0017] Furthermore, a box body decorative board is provided on the surface of the hinge box body, and a door leaf decorative board is provided on the surface of the connecting arm panel.

[0018] The present invention mainly has the following beneficial effects: A connecting arm assembly is movably connected between the adjusting block and the connecting arm panel. The connecting arm assembly includes a first connecting arm, a second connecting arm, and a third connecting arm. The front end of the first connecting arm is connected to the connecting arm panel. The upper end of the second connecting arm is connected to the rear end of the first connecting arm. The upper end of the third connecting arm is connected to the middle part of the first connecting arm. The lower ends of the second connecting arm and the third connecting arm are respectively connected to the adjusting block. Through the rotation mechanism of the two-stage combination, when the first-stage combination rotates and opens / closes conventionally, the second-stage combination provides additional movement, enabling the door leaf to be lifted and move along a parabolic trajectory when opening, thus avoiding the door frame or other possible restricted areas, achieving the effect of high over-edge, and the load-bearing capacity has also been greatly improved, which can meet the installation requirements of most residential entrance doors. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic three-dimensional structure diagram of the whole of the present invention.

[0020] Figure 2 It is a schematic three-dimensional structure diagram of the hinge box body, connecting arm panel, adjusting block, and connecting arm assembly of the present invention.

[0021] Figure 3 It is an exploded structure diagram of the hinge box body, connecting arm panel, adjusting block, and connecting arm assembly of the present invention.

[0022] Figure 4 It is a schematic connection structure diagram of the adjusting block, first connecting arm, second connecting arm, and third connecting arm of the present invention.

[0023] Figure 5 It is an exploded structure diagram of the adjusting block, first connecting arm, second connecting arm, and third connecting arm of the present invention.

[0024] Figure 6 It is a schematic structure diagram of the hinge box body and the adjusting block of the present invention.

[0025] Reference numerals: hinge box body 10; connecting arm panel 20; adjusting installation groove 11; adjusting block 30; connecting arm assembly 40; first connecting arm 41; second connecting arm 42; third connecting arm 43; first connecting slot 411; first movable connecting portion 421; first connecting pin 44; first movable connecting hole 31; second movable connecting portion 422; second connecting pin 45; second connecting slot 412; first hinge connecting portion 431; third connecting pin 46; second movable connecting hole 32; second hinge connecting portion 432; fourth connecting pin 47; connecting jack 21; connecting plug 413; first buffer rubber ring 441; second buffer rubber ring 451; third buffer rubber ring 461; fourth buffer rubber ring 471; adjusting groove 111; up and down adjusting convex block 33; up and down adjusting perforation 331; fixing perforation 112; up and down adjusting screw 34; front and back adjusting perforation 332; front and back adjusting screw 35; first installation perforation 12; second installation perforation 22; box body decorative panel 13; door leaf decorative panel 23; panel adjusting box 24; movable convex block 241; movable slot 25. Detailed implementation manners

[0026] As Figures 1 to 6 shown, a high over-edge adjustable invisible hinge includes a hinge box body 10 and a connecting arm panel 20. An adjusting installation groove 11 is recessed inside the hinge box body 10. Adjusting blocks 30 are symmetrically installed on both inner sides of the adjusting installation groove 11. A connecting arm assembly 40 is movably connected between the two adjusting blocks 30 and the connecting arm panel 20. When in use, the hinge box body 10 is connected to the frame, and the connecting arm panel 20 is connected to the door leaf.

[0027] In specific implementation, the connecting arm assembly 40 includes a first connecting arm 41, a second connecting arm 42, and a third connecting arm 43. Among them, a first connecting slot 411 is provided at the rear end of the first connecting arm 41. A first movable connecting portion 421 adapted to the first connecting slot 411 is provided at the upper end of the second connecting arm 42. The first movable connecting portion 421 is connected in the first connecting slot 411. A first connecting pin 44 is connected between the first movable connecting portion 421 and the first connecting slot 411. First movable connection holes 31 are formed in the side walls of both the adjusting blocks 30. A second movable connecting portion 422 is provided at the lower end of the second connecting arm 42. The second movable connecting portion 422 is arranged between the two adjusting blocks 30. The second movable connecting portion 422 corresponds to the first movable connection holes 31. A second connecting pin 45 is connected between the first movable connection holes 31 and the second movable connecting portion 422, so that the second connecting arm 42 can be movably connected between the first connecting arm 41 and the two adjusting blocks 30. A second connecting slot 412 is formed in the middle of the first connecting arm 41. A first hinged connecting portion 431 adapted to the second connecting slot 412 is provided at the upper end of the third connecting arm 43. The first hinged connecting portion 431 is connected in the second connecting slot 412. A third connecting pin 46 is connected between the first hinged connecting portion 431 and the second connecting slot 412. Second movable connection holes 32 are formed in the side walls of both the adjusting blocks 30. The second movable connection holes 32 are arranged above the first movable connection holes 31. A second hinged connecting portion 432 is provided at the lower end of the third connecting arm 43. The second hinged connecting portion 432 is arranged between the two adjusting blocks 30. The second hinged connecting portion 432 corresponds to the second movable connection holes 32. A fourth connecting pin 47 is connected between the second hinged connecting portion 432 and the second movable connection holes 32, so that the third connecting arm 43 can be movably connected between the first connecting arm 41 and the two adjusting blocks 30. Connecting jacks 21 are symmetrically formed on the surface of the connecting arm panel 20. Connecting blocks 413 adapted to the connecting jacks 21 are symmetrically protruded at the front end of the first connecting arm 41. The connecting blocks 413 are correspondingly inserted into the connecting jacks 21, and the connecting blocks 413 and the connecting jacks 21 are fixed by welding, so that the connecting arm assembly 40 can be movably connected between the connecting arm panel 20 and the two adjusting blocks 30. When in use, the first-stage rotating hinge structure: responsible for the opening and closing actions of the door leaf, mainly completed through the connection between the first connecting arm 41, the second connecting arm 42, and the adjusting block 30. Through the first connecting pin 44 and the second connecting pin 45, the door leaf can freely open and close along the standard rotation axis. The second-stage rotating hinge structure: when the first-stage rotating hinge completes the normal opening and closing of the door leaf, the cooperation of the third connecting arm 43 with the third connecting pin 46 and the fourth connecting pin 47 enables the door leaf to move outward along a parabolic direction, avoiding collision with the door frame or other obstacles.This process is similar to the operation of a complex robotic arm. When the door leaf rotates along the first - stage hinge, the third connecting arm 43 drives the door leaf to rise through the second - stage hinge system, enabling the door leaf to bypass the restricted area or obstacle of the door frame and finally achieving the effect of being higher than the edge. Through the rotation mechanism of the secondary combination, when the first - stage combination (composed of the first connecting arm, the second connecting arm, and the adjustment block) performs normal rotational opening and closing, the second - stage combination (composed of the third connecting arm) provides additional movement, allowing the door leaf to rise and move along a parabolic trajectory during opening, thus avoiding the door frame or other possible restricted areas. This design enables the door leaf to open smoothly even in a space - restricted situation and can completely avoid the common problems in traditional hinge structures where the door leaf gets stuck or cannot be opened smoothly. The load - bearing capacity has also been greatly improved, meeting the installation requirements of most residential entrance doors.

[0028] During specific implementation, first buffer rubber rings 441 are symmetrically sleeved on both sides of the first connecting pin 44. The first buffer rubber rings 441 are arranged between the first movable connection part 421 and the first connection slot 411. Second buffer rubber rings 451 are symmetrically sleeved on both sides of the second connecting pin 45. The second buffer rubber rings 451 are arranged between the first movable connection hole 31 and the second movable connection part 422. Third buffer rubber rings 461 are symmetrically sleeved on both sides of the third connecting pin 46. The third buffer rubber rings 461 are arranged between the first articulated connection part 431 and the second connection slot 412. Fourth buffer rubber rings 471 are symmetrically sleeved on both sides of the fourth connecting pin 47. The fourth buffer rubber rings 471 are arranged between the second articulated connection part 432 and the second movable connection hole 32. When the connecting arm assembly 40 is in motion, due to the elastic characteristics of the first buffer rubber rings 441, the second buffer rubber rings 451, the third buffer rubber rings 461, and the fourth buffer rubber rings 471, the rubber rings can absorb and disperse the impact force, avoid excessive stress concentration on mechanical components, slow down the wear between components, and extend the overall life of the hinge.

[0029] In specific implementation, adjustment grooves 111 are symmetrically recessed on both sides of the adjustment installation groove 11. Upper and lower adjustment protrusions 33 are provided at the upper ends of the two adjustment blocks 30. The size of the adjustment groove 111 is larger than that of the upper and lower adjustment protrusions 33. The upper and lower adjustment protrusions 33 are embedded in the adjustment groove 111. An oval upper and lower adjustment through-hole 331 is formed on the surface of the upper and lower adjustment protrusions 33, and a circular fixing through-hole 112 is formed on the surface of the adjustment groove 111. The upper and lower adjustment through-hole 331 and the fixing through-hole 112 are correspondingly arranged, and an upper and lower adjustment screw 34 is connected between the upper and lower adjustment through-hole 331 and the fixing through-hole 112. When the position of the door leaf needs to be adjusted, the user can loosen the upper and lower adjustment screw 34 by screwing. At this time, the upper and lower adjustment protrusions 33 can slide up and down in the adjustment groove 111. Due to the precise fit between the upper and lower adjustment through-hole 331 and the fixing through-hole 112, the up and down position of the adjustment block 30 can be precisely controlled, so as to adjust the up and down relative position between the door leaf and the door frame. The structure is simple and the adjustment is convenient.

[0030] In specific implementation, a front and rear adjustment through-hole 332 is formed on the surface of the upper and lower adjustment protrusions 33, and a front and rear adjustment screw 35 is connected in the front and rear adjustment through-hole 332. The front and rear adjustment screw 35 passes through the front and rear adjustment through-hole 332 and abuts and fixes against the adjustment groove 111. The size of the adjustment installation groove 11 is larger than that of the adjustment block 30. When adjustment is needed, the user can loosen the front and rear adjustment screw 35 by screwing. At this time, the adjustment block 30 can slide back and forth in the adjustment installation groove 11, so as to achieve the effect of fine adjustment back and forth.

[0031] In specific implementation, first installation through-holes 12 are respectively formed on both sides of the hinge box body 10, and second installation through-holes 22 are respectively formed on both sides of the connecting arm panel 20. During use, the hinge box body 10 is connected and fixed to the door frame through the first installation through-hole 12 passing through fasteners, so that the hinge box body 10 is connected to the door frame. The connecting arm panel 20 is connected and fixed to the door leaf through the second installation through-hole 22 passing through fasteners, so that the connecting arm panel 20 is connected to the door leaf.

[0032] In specific implementation, a box body decorative panel 13 is provided on the surface of the hinge box body 10, and the box body decorative panel 13 is fixedly adhered to the hinge box body 10 with glue. A door leaf decorative panel 23 is provided on the surface of the connecting arm panel 20, and the door leaf decorative panel 23 is fixedly adhered to the connecting arm panel 20 with glue. During use, the box body decorative panel 13 and the door leaf decorative panel 23 ensure the neat and elegant appearance of the hinge system after installation. Since there are no exposed fixing parts on the decorative panel, the overall look is more concise, avoiding visual clutter and making the hinge and the door leaf more coordinated as a whole.

[0033] In specific implementation, a panel adjustment box 24 is sleeved outside the connecting arm panel 20. Two movable bumps 241 are symmetrically protruded on both sides of the panel adjustment box 24. Two movable slots 25 are symmetrically formed on both sides of the connecting arm panel 20. The size of the movable slots 25 is larger than that of the movable bumps 241. The movable bumps 241 are embedded in the movable slots 25. During use, the movable bumps 241 can move left and right along the movable slots 25, so as to finely adjust the connecting arm panel 20 in the left-right direction.

[0034] In summary, a connecting arm assembly 40 is movably connected between the adjusting block 30 and the connecting arm panel 20. The connecting arm assembly 40 includes a first connecting arm 41, a second connecting arm 42 and a third connecting arm 43. The front end of the first connecting arm 41 is connected to the connecting arm panel 20. The upper end of the second connecting arm 42 is connected to the rear end of the first connecting arm 41. The upper end of the third connecting arm 43 is connected to the middle part of the first connecting arm 41. The lower ends of the second connecting arm 42 and the third connecting arm 43 are respectively connected to the adjusting block 30. Through the rotation mechanism of the two-stage combination in the adjustable invisible hinge with a high over-edge of the present invention, when the first-stage combination performs conventional rotational opening and closing, the second-stage combination provides additional movement, enabling the door leaf to be lifted and move along a parabolic trajectory when opening, so as to avoid the door frame or other possible restricted areas, achieving the effect of a high over-edge, and the load-bearing capacity is also greatly improved, which can meet the installation requirements of most residential entrance doors. At the same time, we innovatively designed a door frame adjustment box structure, enabling the main body part and the adjustment part of the hinge to be separately installed on the door frame and the door leaf in the door factory. The door frame and the door leaf can be separately packaged. When arriving at the construction site, the door frame and the door leaf only need to be simply assembled to complete the installation and adjustment, which greatly facilitates transportation and the protection of the door body.

Claims

1. A high-over-edge adjustable invisible hinge, characterized in that: The invention comprises a hinge box body (10) and a connecting arm panel (20); an adjusting installation groove (11) is concavely arranged inside the hinge box body (10); adjusting blocks (30) are symmetrically installed on both sides of the adjusting installation groove (11); a connecting arm assembly (40) is movably connected between the adjusting block (30) and the connecting arm panel (20); the connecting arm assembly (40) comprises a first connecting arm (41), a second connecting arm (42) and a third connecting arm (43); one end of the first connecting arm (41) is connected to the connecting arm panel (20); one end of the second connecting arm (42) is connected to the other end of the first connecting arm (41); one end of the third connecting arm (43) is connected to the middle part of the first connecting arm (41); and the other ends of the second connecting arm (42) and the third connecting arm (43) are respectively connected to the adjusting block (30).

2. The adjustable invisible hinge according to claim 1, characterized in that: A first connection slot (411) is provided at the rear end of the first connection arm (41), a first movable connection portion (421) is provided at the upper end of the second connection arm (42), the first movable connection portion (421) is connected to the first connection slot (411), a first connection pin (44) is connected between the first movable connection portion (421) and the first connection slot (411), a first movable connection hole (31) is provided on the side wall of the adjustment block (30), a second movable connection portion (422) is provided at the lower end of the second connection arm (42), the second movable connection portion (422) is arranged between the adjustment block (30), the second movable connection portion (422) corresponds to the first movable connection hole (31), and a second connection pin (45) is connected between the first movable connection hole (31) and the second movable connection portion (422), so that the second connection arm (42) can be movably connected between the first connection arm (41) and the adjustment block (30).

3. The adjustable invisible hinge according to claim 2, characterized in that: A second connection slot (412) is provided in the middle of the first connection arm (41), a first hinged connection portion (431) is provided at the upper end of the third connection arm (43), the first hinged connection portion (431) is connected to the second connection slot (412), a third connection pin (46) is connected between the first hinged connection portion (431) and the second connection slot (412), a second movable connection hole (32) is provided on the side wall of the adjustment block (30), the second movable connection hole (32) is arranged on the first movable connection hole A second hinged connection portion (432) is provided at the lower end of the third connecting arm (43), the second hinged connection portion (432) being arranged between the adjusting block (30), the second hinged connection portion (432) corresponding to the second movable connection hole (32), and a fourth connecting pin (47) being connected between the second hinged connection portion (432) and the second movable connection hole (32), so that the third connecting arm (43) can be movably connected between the first connecting arm (41) and the adjusting block (30).

4. The adjustable invisible hinge according to claim 3, characterized in that: The surface of the connecting arm panel (20) is symmetrically provided with connecting sockets (21); the front end of the first connecting arm (41) is symmetrically provided with connecting plugs (413); the connecting plugs (413) are correspondingly plugged into the connecting sockets (21); and the connecting plugs (413) and the connecting sockets (21) are fixed by welding.

5. The adjustable invisible hinge according to claim 4, characterized in that: The first connecting pin (44) is symmetrically sleeved with a first buffer rubber ring (441) on both sides, and the first buffer rubber ring (441) is arranged between the first movable connection part (421) and the first connection slot (411). The second connecting pin (45) is symmetrically sleeved with a second buffer rubber ring (451) on both sides, and the second buffer rubber ring (451) is arranged between the first movable connection hole (31) and the second movable connection part (422). The third connecting pin (46) is symmetrically sleeved with a third buffer rubber ring (461) on both sides, and the third buffer rubber ring (461) is arranged between the first hinged connection part (431) and the second connection slot (412). The fourth connecting pin (47) is symmetrically sleeved with a fourth buffer rubber ring (471) on both sides, and the fourth buffer rubber ring (471) is arranged between the second hinged connection part (432) and the second movable connection hole (32).

6. The adjustable invisible hinge according to claim 1, characterized in that: The adjusting installation groove (11) is symmetrically provided with adjusting grooves (111) on both sides, and the upper end of the adjusting block (30) is provided with an upper and lower adjusting protrusion (33). The size of the adjusting groove (111) is larger than the size of the upper and lower adjusting protrusion (33). The upper and lower adjusting protrusion (33) is embedded in the adjusting groove (111). The surface of the upper and lower adjusting protrusion (33) is provided with an elliptical upper and lower adjusting through hole (331). The surface of the adjusting groove (111) is provided with a circular fixing through hole (112). The upper and lower adjusting through holes (331) and the fixing through holes (112) are arranged correspondingly, and an upper and lower adjusting screw (34) is connected between the upper and lower adjusting through holes (331) and the fixing through holes (112).

7. The adjustable invisible hinge according to claim 6, characterized in that: A front-rear adjustment through-hole (332) is provided on the surface of the upper and lower adjustment protrusion (33), a front-rear adjustment screw (35) is connected to the front-rear adjustment through-hole (332), the front-rear adjustment screw (35) passes through the front-rear adjustment through-hole (332) and is abutted and fixed with the adjustment groove (111), and the size of the adjustment installation groove (111) is larger than the size of the adjustment block (30).

8. The adjustable invisible hinge according to claim 1, characterized in that: The hinge box body (10) is provided with first installation through holes (12) on both sides, and the connecting arm panel (20) is provided with second installation through holes (22) on both sides.

9. The adjustable invisible hinge according to claim 8, characterized in that: The box body decorative plate (13) and the hinge box body (10) are fixed by gluing, and the door leaf decorative plate (23) and the connecting arm panel (20) are fixed by gluing.

10. The adjustable invisible hinge according to claim 9, characterized in that: The surface of the hinge box body (10) is provided with a box body decorative panel (13), and the surface of the connecting arm panel (20) is provided with a door leaf decorative panel (23).

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