Three-dimensional adjusting flag-shaped blind hinge

Abstract

The utility model discloses a three-dimensional adjusting flag-shaped blind hinge which comprises a one-dimensional adjusting door frame supporting seat, a one-dimensional adjusting door leaf mounting seat, a rotating arm assembly, a mounting screw and a plane bearing. The one-dimensional adjusting door frame supporting seat is provided with a first connecting shaft, a second connecting shaft, a swing arm, a swing arm bracket, a screw hole plate, an adjusting screw A and an adjusting screw B; a screw hole A is formed in the screw hole plate, the screw hole plate penetrates through a rectangular connecting hole in the swing arm support to be installed, and the two ends of the screw hole plate are welded or riveted to the swing arm support; the adjusting screw A penetrates through a long hole formed in the swing arm support and is connected with a screw hole B in the swing arm, front-back swing of the swing arm can be adjusted, and left-right gap adjustment of the door leaf and the door frame is achieved. One end of the rotating arm assembly is connected with a second connecting shaft of the one-dimensional adjusting door frame supporting seat through a shaft hole A of a rotating arm, and the other end of the rotating arm assembly is connected with the one-dimensional adjusting door leaf mounting seat through a mounting screw to form a flag-shaped blind hinge.

Description

Technical Field

[0001] The utility model relates to a three-dimensional adjustable flag-shaped concealed hinge, which belongs to hardware products. Background Art

[0002] Flag hinges are typically surface-mounted due to their ease of installation and are widely used in door applications, particularly for non-standard gates and construction doors. Concealed hinges with a pivoting arm are located in the doorframe. Once installed, the frame and door opening are typically fixed and cannot be removed. Furthermore, the clearance between the door leaf and doorframe cannot be adjusted, particularly vertically and horizontally. Furthermore, the demand for high-end cast aluminum doors in recent years has led to an increasing use of concealed hinges. Furthermore, with increasing weight and size, the clearance between the door leaf and doorframe is adjusted at the factory. For cast aluminum and construction doors, the clearance between the door leaf and doorframe is packaged separately after the frame and door opening are installed. After delivery to the customer's home or construction site, no further clearance adjustment is required after the door leaf is mounted on the frame. Furthermore, the opening angle of concealed hinged doors with pivoting arms is generally limited to approximately 120 degrees, not 180 degrees. Therefore, it is increasingly important to develop a three-dimensional adjustable flag-shaped concealed hinge that is easy to assemble, debug and install, has a large opening angle, and can withstand heavy door leaves. Summary of the Invention

[0003] Based on the above-mentioned product defects and requirements, the technical problem to be solved by the present invention is to provide a three-dimensional adjustable flag-shaped concealed hinge structure.

[0004] The following is the technical solution adopted by this utility model:

[0005] A three-dimensional adjustable flag-shaped concealed hinge:

[0006] Solution 1: It includes a one-dimensionally adjustable door frame support seat, a one-dimensionally adjustable door leaf mounting seat, a rotating arm assembly, mounting screws and a plane bearing. The one-dimensional adjustable door frame support seat is designed with a first connecting shaft, a second connecting shaft, a swing arm, a swing arm bracket, a screw hole plate, an adjusting screw A and an adjusting screw B; the screw hole plate is provided with a screw hole A, the screw hole plate is installed through the rectangular connecting hole on the swing arm bracket and is welded or riveted to the swing arm bracket at both ends, and the screw hole plate can also be designed as an integral part of the arm bracket; the adjusting screw A is passed through the long hole provided on the swing arm bracket and is connected to the screw hole B on the swing arm, which can adjust the swing arm to swing back and forth, so as to adjust the left and right gaps between the door leaf and the door frame; the adjusting screw B is connected to the screw hole A on the screw hole plate and installed to tighten the swing arm, which can lock the left and right gaps between the door leaf and the door frame; the axis hole of the plane bearing passes through the second connecting shaft on the swing arm and is installed against the end face of the arc-shaped waist hole on the swing arm bracket, so that the swing arm is easy and flexible; one end of the swing arm assembly is connected to the second connecting shaft of the one-dimensional adjustable door frame support seat through the axis hole A of the swing arm, and the other end is connected to the one-dimensional adjustable door leaf mounting seat through the mounting screw to form a flag-shaped concealed hinge.

[0007] The one-dimensionally adjustable door mounting base includes a door screw hole plate, an eccentric shaft, and a screw C. The door screw hole plate is provided with a recessed groove for accommodating the eccentric shaft, a screw hole C, and a longitudinal or transverse rectangular fixing hole. The large-diameter end of the eccentric shaft is movably mounted in the recessed groove of the door screw hole plate. The eccentric shaft is rotated to adjust the vertical position of the rotating arm assembly relative to the one-dimensionally adjustable door mounting base via the small-diameter end of the eccentric shaft, thereby adjusting the vertical position of the door leaf and the door frame. The eccentric shaft is locked with screw C to prevent the door leaf from falling. In addition, the door screw hole plate is designed with a transverse rectangular fixing hole that can adjust the horizontal position of the door leaf and the door screw hole plate, thereby adjusting the front-back position of the door leaf relative to the door frame.

[0008] Further: the pivot arm assembly includes at least a pivot arm and a sleeve, the pivot arm includes an axis hole A, a mounting foot plate and a connecting section between the axis hole A and the mounting foot plate, the connecting section is composed of a connecting straight edge A, a forming angle A, a longitudinal connecting straight edge B, an R angle, a transverse connecting straight edge C, a forming angle B, a connecting straight edge D, a forming angle C, a transverse connecting straight edge E connected to the mounting foot plate to form a hook-shaped give way groove A from the end of the axis hole A, and the sleeve is arranged at the lower end of the axis hole A.

[0009] Furthermore: the mounting foot plate is provided with at least one circular positioning hole, and a number of longitudinal or transverse elongated or circular mounting holes are symmetrically designed on both sides of the circular positioning hole. The rotating arm assembly is connected to the small diameter end of the eccentric shaft on the one-dimensional adjustable door leaf mounting seat through the circular positioning hole.

[0010] Furthermore: the swing arm includes a first axial hole B, a second axial hole C and a screw hole B, the first connecting shaft passes through the axial hole D of the swing arm bracket and the first axial hole B of the swing arm and is riveted or welded to the swing arm bracket; the second connecting shaft passes through the second axial hole C and is riveted or welded to the swing arm.

[0011] Further: the swing arm bracket is provided with an arc-shaped waist-shaped hole, an axis hole D, a rectangular connecting hole for installing and adjusting the screw A, and a long hole for making way for the swing arm. The swing arm passes through the swing arm bracket axis hole D and the swing arm first axis hole B through the first connecting shaft and is connected to the axis hole D of the swing arm bracket and the first connecting shaft is fixed by riveting or welding.

[0012] Furthermore: the plane bearing is a plane bearing structure composed of a sleeve and a washer, or a steel ball plane bearing, or any plane bearing structure composed of two plane washers with a copper washer sandwiched between them.

[0013] In addition, further: the pivot arm assembly includes at least a pivot arm and a sleeve, the pivot arm includes an axial hole A, a mounting foot plate and a connecting section between the axial hole A and the mounting foot plate, the connecting section is composed of a connecting straight edge A, a forming angle A, a longitudinal connecting straight edge B, a forming angle D, an R-shaped arc surface, a forming angle E, a transverse connecting straight edge D extending from the forming angle E and connected to the mounting foot plate to form a hook-shaped clearance groove B, and the sleeve is arranged at the lower end of the axial hole A.

[0014] Option 2:

[0015] In addition, the swing arm assembly can be a double-axis hole structure swing arm assembly a, the double-axis hole structure swing arm assembly a includes a double-axis hole swing arm, a door leaf mounting foot plate, a third connecting axis, a positioning device A and a positioning device B; the double-axis hole swing arm includes an axis hole D, an axis hole E and a connecting section (3a-1-3) between the axis hole D and the axis hole E; the connecting section is composed of a connecting straight edge A, a forming angle A, a longitudinal connecting straight edge B, an R1 angle, a transverse connecting straight edge C, a forming angle B, a connecting straight edge D, a forming angle C, a transverse connecting straight edge E, a forming angle F, and an oblique straight edge connecting the axis hole E in sequence from the axis hole D end, forming a hook-shaped give way groove A or a connecting straight edge A, a forming angle A, a longitudinal connecting straight edge B, a forming angle D, The R arc surface, the forming angle E, the transverse connecting straight edge D extending from the forming angle E, the forming angle F, and the oblique straight edge connecting the axis hole E constitute a hook-shaped giveway groove B, and the shaft sleeve is arranged at the lower end of the axis hole D; the door leaf mounting foot plate includes an axis hole F and a hinge plate; the axis hole F is connected and rotatably matched with the axis hole E end of the double-axis hole rotating arm through a third connecting shaft, and a plane bearing is arranged on the inner side of the axis hole F and the outer side of the axis hole E of the double-axis hole rotating arm, and the outer end of the third connecting shaft is welded or riveted to the outer end of the axis hole F of the door leaf mounting foot plate; the hinge plate is provided with a longitudinal or transverse long or circular mounting hole for connecting the door leaf screw hole plate screw hole C of the one-dimensional adjustable door leaf mounting seat and a circular positioning hole.

[0016] The middle part of the outer circle of the shaft hole D and the shaft hole E of the double-axis hole rotating arm is provided with at least one outward boss A and an outward boss B. The boss A and the boss B are designed to be back to back, and screw holes are provided on them to install positioning devices A and positioning devices B to enable the rotating arm to rotate into place and position; the positioning devices A and positioning devices B are designed with screw sleeves, compression springs and steel balls.

[0017] This double-axis hole rotating arm hinge opens the door leaf around the first axis within an opening angle of 110 to 120 degrees, and opens the door leaf around the other axis when the opening angle is greater than 120 degrees to increase the opening angle. Compared with existing multi-axis hinges, it has a stronger bearing capacity and will not produce abnormal noise.

[0018] In summary, the beneficial effects of the present invention are:

[0019] 1. The door leaf and door frame can be adjusted in three directions simply and conveniently.

[0020] 2. A shaft sleeve is provided at the lower end of the shaft hole of the swing arm. The plane bearing structure composed of the large diameter end face of the sleeve and the washer acts as a plane bearing and a radial bearing. Compared with the steel ball bearing, it has a stronger load-bearing capacity and greatly improves the service life of the swing arm.

[0021] 3. Since the hinge arm is equivalent to the movable leaf of the flag hinge, the door leaf can be quickly installed and removed, which is convenient for daily maintenance of the door leaf.

[0022] 4. The double-axis hole rotating arm hinge door has a large opening angle, is quiet, and has strong load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional illustration of a flag-shaped concealed hinge.

[0024] Figure 2 This is a three-dimensional exploded diagram of a flag-shaped concealed hinge.

[0025] Figure 3 This is a three-dimensional illustration of the technical features of the rotating arm structure.

[0026] Figure 4 This is a three-dimensional illustration of the one-dimensional adjustable door frame support seat structure.

[0027] Figure 5 This is a three-dimensional exploded diagram of a one-dimensional adjustable door frame support seat.

[0028] Figure 6 This is a three-dimensional illustration of the one-dimensional adjustable door leaf mounting structure.

[0029] Figure 7 This is the diagram (1) illustrating the technical features of the cross section of the swing arm.

[0030] Figure 8 This is the diagram (2) illustrating the technical features of the cross section of the swing arm.

[0031] Figure 9 This is a diagram illustrating the structure of the arm assembly (3a).

[0032] Figure 10 Illustration of the technical features for installing the footboard (3a-2) for the door leaf.

[0033] Figure 11 This is an enlarged diagram illustrating the positioning device structure.

[0034] Figure 12 This is the technical feature illustration of the cross section of the double-axis hole arm (1).

[0035] Figure 13 This is the technical feature illustration of the cross section of the double-axis hole arm (2). DETAILED DESCRIPTION

[0036] Refer to the attached Figure 1-Figure 7 , the utility model is further described with reference to the embodiments:

[0037] Solution 1: A three-dimensional adjustable flag-shaped concealed hinge, which includes a one-dimensional adjustable door frame support seat 1, a one-dimensional adjustable door leaf mounting seat 2, a rotating arm assembly 3, a mounting screw 4 and a plane bearing 5. The one-dimensional adjustable door frame support seat 1 is designed with a first connecting shaft 1-1, a second connecting shaft 1-2, a swing arm 1-3, a swing arm bracket 1-4, a screw hole plate 1-5, an adjusting screw A1-6 and an adjusting screw B1-7; the screw hole plate 1-5 is provided with a screw hole A1-5-1, the screw hole plate 1-5 passes through the rectangular connecting hole 1-4-3 on the swing arm bracket 1-4, and is installed and welded or riveted to the swing arm bracket 1-4 at both ends. The screw hole plate 1-5 can also be designed as a whole with the arm bracket 1-4; the adjusting screw A1-6 passes through the long hole 1-4-4 provided on the swing arm bracket 1-4 and is connected to the screw hole B1-3-3 on the swing arm 1-3, so as to adjust the swing arm 1 -3 swings back and forth to adjust the left and right gaps between the door leaf and the door frame; the adjusting screw B1-7 is connected to the screw hole A1-5-1 on the screw hole plate 1-5 to install the swing arm 1-3, which can lock the left and right gaps between the door leaf and the door frame; the axial hole of the plane bearing 5 passes through the second connecting shaft 1-2 on the swing arm 1-3 and is installed against the end face of the arc-shaped waist hole 1-4-1 on the swing arm bracket 1-4, so that the swing arm is easy and flexible; one end of the swing arm assembly 3 is connected to the second connecting shaft 1-2 of the one-dimensional adjustment door frame support seat 1 through the axial hole A3-1-1 of the swing arm 3-1, and the other end is connected to the one-dimensional adjustment door leaf mounting seat 2 through the mounting screw 4 to form a flag-shaped concealed hinge.

[0038] The one-dimensionally adjustable door leaf mounting base 2 includes a door leaf screw hole plate 2-1, an eccentric shaft 2-2, and screws C2-3. The door leaf screw hole plate 2-1 is provided with a recessed groove 2-1-1 for accommodating the eccentric shaft 2-2, screw holes C2-1-2, and longitudinal or transverse rectangular fixing holes 2-1-3. The large diameter 2-2-1 end of the eccentric shaft 2-2 is movably fitted with the recessed groove 2-1-1 of the door leaf screw hole plate 2-1. The eccentric shaft 2-2 is rotated to adjust the vertical position of the rotating arm assembly 3 relative to the one-dimensionally adjustable door leaf mounting base 2 via the small diameter 2-2-2 end of the eccentric shaft 2-2, thereby adjusting the vertical position of the door leaf and the door frame. The eccentric shaft 2-2 is locked by screws C2-3 to prevent the door leaf from falling. In addition, the door leaf screw hole plate 2-1 is designed with transverse rectangular fixing holes 2-1-3 to adjust the horizontal position of the door leaf and the door leaf screw hole plate 2-1, thereby adjusting the front-rear position of the door leaf relative to the door frame.

[0039] Preferably: the pivot arm assembly 3 at least includes a pivot arm 3-1 and a sleeve 3-2, the pivot arm 3-1 includes an axial hole A3-1-1, a mounting foot plate 3-1-2 and a connecting section 3-1-3 between the axial hole A3-1-1 and the mounting foot plate 3-1-2, the connecting section 3-1-3 is composed of a connecting straight edge A3-1-3-1, a forming angle A3-1-3-2, a longitudinal connecting straight edge B3-1-3-2, an R angle 3-1-3-4, a transverse connecting straight edge C3-1-3-5, a forming angle B3-1-3-6, a connecting straight edge D3-1-3-7, a forming angle C3-1-3-8, a transverse connecting straight edge E3-1-3-9 connected to the mounting foot plate 3-1-2 to form a hook-shaped give way groove A3-1-4 from the end of the axial hole A3-1-1, and the sleeve 3-2 is arranged at the lower end of the axial hole A3-1-1.

[0040] Preferably: the mounting foot plate 3-1-2 is provided with at least one circular positioning hole 3-1-2-1, and a plurality of longitudinal or transverse elongated or circular mounting holes 3-1-2-2 are symmetrically designed on both sides of the circular positioning hole 3-1-2-1, and the rotating arm assembly 3 is connected with the small diameter 2-2-2 end of the eccentric shaft 2-2 on the one-dimensional adjustable door leaf mounting seat 2 through the circular positioning hole 3-1-2-1.

[0041] Preferably: the swing arm 1-3 includes a first axial hole B1-3-1, a second axial hole C1-3-2 and a screw hole B1-3-3, the first connecting shaft 1-1 passes through the axial hole D1-4-2 of the swing arm bracket 1-4 and the first axial hole B1-3-1 of the swing arm 1-3 and is riveted or welded to the swing arm bracket 1-4; the second connecting shaft 1-2 passes through the second axial hole C1-3-2 and is riveted or welded to the swing arm 1-3.

[0042] Preferably: the swing arm bracket 1-4 is provided with an arc-shaped waisted hole 1-4-1, an axial hole D1-4-2, a rectangular connecting hole 1-4-3 and a long hole 1-4-4 for giving way to the adjusting screw A1-6, and the swing arm 1-3 passes through the axial hole D1-4-2 of the swing arm bracket 1-4 and the first axial hole B1-3-1 of the swing arm 1-3 through the first connecting shaft 1-1 and is connected to the axial hole D1-4-2 of the swing arm bracket 1-4 and the first connecting shaft 1-1 is fixed by riveting or welding.

[0043] Preferably, the plane bearing 5 is a plane bearing structure composed of a sleeve and a washer, or a steel ball plane bearing, or any plane bearing structure composed of two plane washers with a copper washer sandwiched between them.

[0044] In addition, refer to the attached Figure 8 :

[0045] Preferably: the pivot arm assembly 3 includes at least a pivot arm 3-1 and a sleeve 3-2, the pivot arm 3-1 includes an axial hole A3-1-1, a mounting foot plate 3-1-2 and a connecting section 3-1-3 between the axial hole A3-1-1 and the mounting foot plate 3-1-2, the connecting section 3-1-3 is composed of a connecting straight edge A3-1-3-1, a forming angle A3-1-3-2, a longitudinal connecting straight edge B3-1-3-3, a forming angle D3134, an R-shaped arc surface 3135, a forming angle E3136, a transverse connecting straight edge D3137 extending from the forming angle E3136 connected to the mounting foot plate 3-1-2 to form a hook-shaped clearance groove B3138, and the sleeve 3-2 is arranged at the lower end of the axial hole A3-1-1.

[0046] Refer to the attached Figures 9 to 13

[0047] Solution 2: The arm assembly 3 can be a dual-axis hole structure arm assembly 3a, which includes a dual-axis hole arm 3a-1, a door leaf mounting foot plate 3a-2, a third connecting shaft 3a-3, a positioning device A3a-4 and a positioning device B3a-5; the dual-axis hole arm 3a-1 includes an axis hole D3a-1-1, an axis hole E3a-1-2 and a connecting section 3a-1-3 between the axis hole D3a-1-1 and the axis hole E3a-1-2; the connecting section 3a-1-3 is composed of a connecting straight edge A3-1-3-1, a forming angle A3-1-3-2, a longitudinal connecting straight edge B3-1-3-3, and R1 from the end of the axis hole D3a-1-1. Angle 3-1-3-4, horizontal connecting straight edge C3-1-3-5, forming angle B3-1-3-6, connecting straight edge D3-1-3-7, forming angle C3-1-3-8, horizontal connecting straight edge E3-1-3-9, forming angle F3a-1-4, oblique straight edge 3a-1-5 connecting shaft hole E3a-1-2, forming hook-shaped give way groove A3-1-4 or from the shaft hole D3a-1-1 end, it is composed of connecting straight edge A3-1-3-1, forming angle A3-1-3-2, longitudinal connecting straight edge B3-1-3-3, forming angle D3134, The R-shaped arc surface 3135, the forming angle E3136, the horizontal connecting straight edge D3137 extending from the forming angle E3136, the forming angle F3a-1-4, and the oblique straight edge 3a-1-5 connecting the axis hole E3a-1-2 form a hook-shaped clearance groove B3138. The shaft sleeve 3-2 is arranged at the lower end of the axis hole D3a-1-1; the door leaf mounting foot plate 3a-2 includes an axis hole F3a-2-1 and a hinge plate 3a-2-2; the axis hole F3a-2-1 is connected to the axis hole E3a-2-1 of the double-axis hole rotating arm 3a-1 through the third connecting shaft 3a-3. -1-2 ends are connected for rotation, and a plane bearing 5 is arranged on the inner side of the axis hole F3a-2-1 and the outer side of the axis hole E3a-1-2 of the double-axis hole rotating arm 3a-1. The outer end of the third connecting shaft 3a-3 is welded or riveted to the outer end of the axis hole F3a-2-1 of the door leaf mounting foot plate 3a-2; the hinge plate 3a-2-2 is provided with a longitudinal or transverse elongated or circular mounting hole 3-1-2-2 for connecting the screw hole C2-1-2 of the door leaf screw hole plate 2-1 of the one-dimensional adjustable door leaf mounting seat 2, and a circular positioning hole 3-1-2-1.

[0048] The middle part of the outer circle of the axial hole D3a-1-1 and the axial hole E3a-1-2 sleeve of the double-axial hole rotating arm 3a-1 is provided with at least one outward boss A3a-1-6 and an outward boss B3a-1-7. The boss A3a-1-6 and the boss B3a-1-7 are designed to be back to back, and a screw hole 3a-1-8 is provided on it, on which a positioning device A3a-4 and a positioning device B3a-5 are installed to rotate the rotating arm into position; the positioning device A3a-4 and the positioning device B3a-5 are designed with a screw sleeve 3a-1-9, a compression spring 3a-1-10 and a steel ball 3a-1-11.

[0049] This double-axis hole rotating arm hinge door has a large opening angle and a stronger bearing capacity than the existing multi-axis hinge. It can open to an angle of more than 170 degrees and will not produce abnormal noise.

[0050] Finally, it should be noted that the above examples are merely preferred embodiments of the present invention. Obviously, the present invention is not limited to the above examples and can be subjected to numerous variations. In particular, with respect to the arm assembly, all variations in structure, principle, and shape that can be directly derived or imagined by those skilled in the art from the disclosure of the present invention are considered to be within the scope of protection of the present invention.

Claims

1. A three-dimensional adjustable flag-shaped concealed hinge, comprising a one-dimensional adjustable door frame support seat (1), a one-dimensional adjustable door leaf mounting seat (2), a rotating arm assembly (3), a mounting screw (4) and a plane bearing (5), characterized in that: The one-dimensional adjustment door frame support seat (1) is designed with a first connecting shaft (1-1), a second connecting shaft (1-2), a swing arm (1-3), a swing arm bracket (1-4), a screw hole plate (1-5), an adjustment screw A (1-6) and an adjustment screw B (1-7); the screw hole plate (1-5) is provided with a screw hole A (1-5-1), the screw hole plate (1-5) passes through the rectangular connecting hole (1-4-3) on the swing arm bracket (1-4) and is installed and welded or riveted to the swing arm bracket (1-4) at both ends, or the screw hole plate (1-5) and the arm bracket (1-4) are designed as a whole; the adjustment screw A (1-6) passes through the long hole (1-4) provided on the swing arm bracket (1-4) -4-4) is connected to the screw hole B (1-3-3) on the swing arm (1-3); the adjusting screw B (1-7) is connected to the screw hole A (1-5-1) on the screw hole plate (1-5) for installation; the axial hole of the plane bearing (5) passes through the second connecting shaft (1-2) on the swing arm (1-3) and is installed against the end face of the arc-shaped waist hole (1-4-1) on the swing arm bracket (1-4); one end of the rotating arm assembly (3) is connected to the second connecting shaft (1-2) of the one-dimensional adjustment door frame support seat (1) through the axial hole A (3-1-1) of the rotating arm (3-1), and the other end is connected to the one-dimensional adjustment door leaf mounting seat (2) through the mounting screw (4) to form a flag-shaped concealed hinge.

2. The three-dimensional adjustable flag-shaped concealed hinge according to claim 1, characterized in that: The one-dimensionally adjustable door leaf mounting seat (2) comprises a door leaf screw hole plate (2-1), an eccentric shaft (2-2) and a screw C (2-3); the door leaf screw hole plate (2-1) is provided with a recessed groove (2-1-1) for accommodating the eccentric shaft (2-2), a screw hole C (2-1-2) and a longitudinal or transverse rectangular fixing hole (2-1-3); the large diameter (2-2-1) end of the eccentric shaft (2-2) is movably fitted with the recessed groove (2-1-1) of the door leaf screw hole plate (2-1).

3. The three-dimensional adjustable flag-shaped concealed hinge according to claim 1, characterized in that: The pivot arm assembly (3) at least comprises a pivot arm (3-1) and a shaft sleeve (3-2), the pivot arm (3-1) comprising an axis hole A (3-1-1), a mounting foot plate (3-1-2) and a connecting section (3-1-3) between the axis hole A (3-1-1) and the mounting foot plate (3-1-2), the connecting section (3-1-3) being sequentially composed of a connecting straight edge A (3-1-3-1), a forming angle A (3-1-3-2), a longitudinal connecting straight edge B (3-1-3-3), an R1 angle (3-1-3-4), The horizontal connecting straight edge C (3-1-3-5), the forming angle B (3-1-3-6), the connecting straight edge D (3-1-3-7), the forming angle C (3-1-3-8), and the horizontal connecting straight edge E (3-1-3-9) are connected to the mounting foot plate (3-1-2) to form a hook-shaped clearance groove A (3-1-4), and the shaft sleeve (3-2) is arranged at the lower end of the shaft hole A (3-1-1).

4. The three-dimensional adjustable flag-shaped concealed hinge according to claim 3, characterized in that: The mounting foot plate (3-1-2) is provided with at least one circular positioning hole (3-1-2-1), and a plurality of longitudinal or transverse elongated or circular mounting holes (3-1-2-2) are symmetrically designed on both sides of the circular positioning hole (3-1-2-1). The rotating arm assembly (3) is connected to the small diameter (2-2-2) end of the eccentric shaft (2-2) on the one-dimensional adjustment door leaf mounting seat (2) through the circular positioning hole (3-1-2-1).

5. The three-dimensional adjustable flag-shaped concealed hinge according to claim 1, characterized in that: The swing arm (1-3) comprises a first shaft hole B (1-3-1), a second shaft hole C (1-3-2) and a screw hole B (1-3-3); the first connecting shaft (1-1) passes through the shaft hole D (1-4-2) of the swing arm bracket (1-4) and the first shaft hole B (1-3-1) of the swing arm (1-3) and is riveted or welded to the swing arm bracket (1-4); the second connecting shaft (1-2) passes through the second shaft hole C (1-3-2) and is riveted or welded to the swing arm (1-3).

6. The three-dimensional adjustable flag-shaped concealed hinge according to claim 1, characterized in that: The swing arm bracket (1-4) is provided with an arc-shaped waisted circular hole (1-4-1), an axis hole D (1-4-2), a rectangular connecting hole (1-4-3), and an elongated hole (1-4-4) for allowing the adjusting screw A (1-6) to move. The swing arm (1-3) passes through the axis hole D (1-4-2) of the swing arm bracket (1-4) and the first axis hole B (1-3-1) of the swing arm (1-3) via a first connecting axis (1-1), and is connected to the axis hole D (1-4-2) of the swing arm bracket (1-4), and the first connecting axis (1-1) is fixed by riveting or welding.

7. The three-dimensional adjustable flag-shaped concealed hinge according to claim 1, characterized in that: The plane bearing (5) is a plane bearing structure composed of a sleeve and a washer, or a steel ball plane bearing, or any plane bearing structure composed of two plane washers with a copper washer sandwiched between them.

8. The three-dimensional adjustable flag-shaped concealed hinge according to any one of claims 1, 2, 4, 5, 6, and 7, characterized in that: The rotating arm (3-1) has a connecting section (3-1-3) which is composed of a connecting straight edge A (3-1-3-1), a forming angle A (3-1-3-2), a longitudinal connecting straight edge B (3-1-3-3), a forming angle D (3134), an R-shaped arc surface (3135), a forming angle E (3136), a transverse connecting straight edge D (3137) extending from the forming angle E (3136) and connected to the mounting foot plate (3-1-2) to form a hook-shaped clearance groove B (3138).

9. The three-dimensional adjustable flag-shaped concealed hinge according to any one of claims 1, 2, 4, 5, 6, and 7, characterized in that: The swing arm assembly (3) may be a double-axis hole structure swing arm assembly (3a), the double-axis hole structure swing arm assembly (3a) comprising a double-axis hole swing arm (3a-1), a door leaf mounting foot plate (3a-2), a third connecting shaft (3a-3), a positioning device A (3a-4) and a positioning device B (3a-5); the double-axis hole swing arm (3a-1) comprises an axis hole A (3-1-1), an axis hole E (3a-1-2) and a connecting section (3-1-3) between the axis hole A (3-1-1) and the axis hole E (3a-1-2); the connecting section (3-1-3) is sequentially composed of a connecting straight edge A (3-1-3-1), a forming angle A (3-1-3-2), a longitudinal connecting straight edge B (3-1-3-3), R1 Angle (3-1-3-4), horizontal connecting straight edge C (3-1-3-5), forming angle B (3-1-3-6), connecting straight edge D (3-1-3-7), forming angle C (3-1-3-8), horizontal connecting straight edge E (3-1-3-9), forming angle F (3a-1-4), oblique straight edge (3a-1-5) connected to the shaft hole E (3a-1-2), forming a hook-shaped give way groove A (3-1-4) or from the shaft hole A (3-1-1) end, it is composed of connecting straight edge A (3-1-3-1), forming angle A (3-1-3-2), longitudinal connecting straight edge B (3-1-3-3), forming angle D (3134), The R arc surface (3135), the forming angle E (3136), the horizontal connecting straight edge D (3137) extending from the forming angle E (3136), the forming angle F (3a-1-4), the oblique straight edge (3a-1-5) connected to the axis hole E (3a-1-2), constitute a hook-shaped clearance groove B (3138), and the shaft sleeve (3-2) is arranged at the lower end of the axis hole E (3a-1-2); the door leaf mounting foot plate (3a-2) includes an axis hole F (3a-2-1) and a hinge plate (3a-2-2); the axis hole F (3a-2-1) is connected to the axis hole E of the double-axis hole rotating arm (3a-1) through the third connecting shaft (3a-3). The ends of the hinge plates (3a-1-2) are connected and rotated together, and a plane bearing (5) is provided on the inner side of the shaft hole F (3a-2-1) and the outer side of the shaft hole E (3a-1-2) of the double-shaft hole rotating arm (3a-1), and the outer end of the third connecting shaft (3a-3) is welded or riveted to the outer end of the shaft hole F (3a-2-1) of the door leaf mounting foot plate (3a-2) for rigid fixation; the hinge plate (3a-2-2) is provided with a longitudinal or transverse long or circular mounting hole (3-1-2-2) for connecting the screw hole C (2-1-2) of the door leaf screw hole plate (2-1) of the one-dimensionally adjustable door leaf mounting seat (2) and a circular positioning hole (3-1-2-1).

10. The three-dimensional adjustable flag-shaped concealed hinge according to claim 9, characterized in that: At least one outward boss A (3a-1-6) and one outward boss B (3a-1-7) are provided in the middle of the outer circle of the sleeve of the shaft hole A (3-1-1) and the shaft hole E (3a-1-2) of the double-shaft hole rotating arm (3a-1); the boss A (3a-1-6) and the boss B (3a-1-7) are designed to be opposite to each other, and a screw hole (3a-1-8) is provided on the boss and a positioning device A (3a-4) and a positioning device B (3a-5) are installed thereon to rotate the rotating arm into position; the positioning device A (3a-4) and the positioning device B (3a-5) are designed with a screw sleeve (3a-1-9), a compression spring (3a-1-10) and a steel ball (3a-1-11).

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