A fixed seat structure of a swing arm hinge for compensating the opening angle of a door leaf

Abstract

The utility model discloses a kind of compensation door leaf opening angle rotating arm hinge fixed seat structure, it includes door leaf hinge plate, rotating member, connecting shaft, positioning device, gasket, flat head screw, plane support, set screw or elastic cylindrical pin and eccentric adjusting screw assembly.The eccentric adjusting screw assembly includes eccentric screw, washer and locking nut, the eccentric screw includes threaded portion, cylindrical eccentric head or conical eccentric head a.Threaded portion is fixed in rotating member's connecting portion A by locking nut movable connection through the long hole in rotating member's connecting portion A, and door leaf hinge plate can relatively rotate compensation door leaf opening angle by the shaft hole B movable connection of connecting shaft and rotating member, in addition, the design that the longitudinal or transverse long installation hole on the mounting footboard of door leaf hinge plate and rotating member's connecting portion A and rotating arm connecting portion B can adjust relative position makes door leaf and hinge can be realized at least two-dimensional adjustment.

Description

Technical Field

[0001] This utility model relates to a door leaf opening angle compensation arm hinge fixing seat structure, which belongs to the door hinge product component structure. Background Technology

[0002] Hinges are a crucial component of door products. The hinge arm is a key part of hinge arm products, typically used in concealed hinges. The hinge axis is usually a single axis located in the door frame. Single-axis hinge arm hinges are simple in structure and widely used in security doors. However, single-axis hinges, especially concealed hinges, have a limited opening angle due to their single-axis rotation, generally not allowing for a 180-degree opening. Hinges designed for large-angle opening employ multi-axis, multi-section hinge arm structures. These hinges, due to their loose multi-axis, multi-section structure, require high manufacturing precision, resulting in high processing costs. They are also prone to sagging and rattling during use. Furthermore, installation and adjustment of the hinge to the door frame are inconvenient. Therefore, developing a hinge arm mounting structure that enables concealed hinge arm hinges to achieve a 180-degree opening angle, providing strong load-bearing capacity and eliminating rattling, is becoming increasingly important. Summary of the Invention

[0003] Based on the above-mentioned product defects and requirements, the technical problem to be solved by this utility model is to provide a rotating arm hinge fixing seat structure that compensates for the opening angle of the door leaf. This rotating arm hinge door leaf fixing seat structure can increase the opening angle of the rotating arm hinge, and can even achieve the opening of the rotating arm hinge to 180 degrees.

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

[0005] A door leaf opening angle compensation hinge fixing seat structure includes a door leaf hinge plate, a rotating component, a connecting shaft, a positioning device, a washer, a flat-head screw, a flat support component, a set screw or a flexible cylindrical pin, and an eccentric adjustment screw assembly. The eccentric adjustment screw assembly includes an eccentric screw, a washer, and a locking nut. The eccentric screw includes a threaded portion, a cylindrical eccentric head, or a conical eccentric head a. The threaded portion passes through an elongated hole on the connecting portion A of the rotating component and is movably fixed to the connecting portion A of the rotating component by the locking nut. The door leaf hinge plate includes a shaft hole A, a threaded sleeve, a threaded hole A, and a mounting foot plate. The threaded sleeve is welded to the outer circle of the shaft hole A or integrally precision-cast. The threaded hole A of the threaded sleeve is perpendicular to and intersects the center line of the shaft hole A, passing through the hole wall of the shaft hole A. The positioning device is matched and installed with the threaded hole A. The mounting foot plate has at least several longitudinal or transverse elongated or circular mounting holes, which allow the position of the door leaf hinge plate relative to the door leaf in the longitudinal or transverse direction to be adjustable. The positioning device includes at least an external threaded... The device consists of a tubular body, a compression spring, and steel balls. The connecting shaft has a steel ball positioning and limiting groove or positioning hole at the corresponding circumferential position of the positioning device to restrict the relative free rotation or rotation to a fixed position between the door hinge plate and the connecting shaft. The door hinge plate is connected to the shaft hole B of the rotating component via the connecting shaft. Threaded holes C are provided at both ends of the connecting shaft, and washers are movably connected to the two shaft ends by flat-head screws to enhance the axial load-bearing capacity of the door hinge plate. The shaft hole A of the door hinge plate is rotatably connected to the connecting shaft. The rotating component and the connecting shaft are fixedly connected by set screws or elastic cylindrical pins to the shaft hole B of the rotating component. The planar support is located at the outer end of the shaft hole B of the rotating component and abuts against the inner end face of the shaft hole A of the door hinge plate, forming an adjustable door opening angle hinge fixing seat. The rotating component is connected to the connecting part B of the rotating arm hinge through the extended connecting part A. When the rotating arm of the rotating arm hinge rotates around the door frame axis to the limit angle, the rotational force overcomes the locking force of the positioning device, and the door hinge plate continues to rotate around the connecting axis, which can increase the opening angle of the rotating arm hinge (door leaf), and even allow the rotating arm hinge (door leaf) to open to a 180-degree angle.

[0006] The planar support includes a planar bearing structure consisting of a bushing with a planar shim or two planar shims with a copper shim sandwiched between them, or a steel ball planar bearing or a simple planar washer.

[0007] In addition, the structure of the connecting part of the outer extension of the rotating component and the connecting part B of the rotating arm hinge of this utility model has the following solutions:

[0008] Design Scheme 1: The rotating component includes a shaft hole B, an extended edge of the shaft hole, an outer bend A, a slanted edge, an outer bend B, a connecting part A, and a concave space slot. It is sequentially composed of the shaft hole B, the extended edge of the shaft hole, the outer bend A, the slanted edge, and the outer bend B forming the extended connecting part A and the concave space slot. The concave space slot is designed to accommodate the door leaf sealing strip on the T-shaped cover edge of the door leaf, increasing the sealing performance of the door product. The connecting part A has several threaded holes B and elongated holes for connection with the swivel arm hinge. The eccentric adjusting screw assembly is located on the connecting part A through the elongated hole, allowing adjustment of the relative position between the swivel arm of the swivel arm hinge and the rotating component (i.e., adjusting the left and right gaps between the door leaf and the door frame). The extended connecting part B of the swivel arm hinge has several elongated oval fixing holes, circular positioning holes, and guide support surfaces. A cylindrical eccentric head or a conical eccentric head a is positioned and installed with the circular positioning hole of the swivel arm. The connecting part A of the rotating component is connected and fixed by screws to form any type of swivel arm hinge.

[0009] Design Scheme 2: The rotating component is rotating component a, which includes a shaft hole B, a shaft hole extension edge, a bent outer angle A, a beveled edge, a bent outer angle B, a connecting part C, and a concave space slot. It is composed of the shaft hole B, the shaft hole extension edge, the bent outer angle A, the beveled edge, the bent outer angle B, the connecting part C, and the concave space slot in sequence. The connecting part C is provided with several elongated oval fixing holes, circular positioning holes, and guide support surfaces. The outer connecting part B of the rotating arm is provided with several threaded holes B and an upper elongated hole. The eccentric adjustment screw assembly is located in the upper elongated hole of the connecting part B and can adjust the relative position of the rotating arm of the rotating arm hinge with the rotating component a (i.e., adjust the left and right gaps between the door leaf and the door frame). The cylindrical eccentric head or the conical eccentric head is positioned and installed with the circular positioning hole of the connecting part C of the rotating component a. The connecting part C of the rotating component a is connected and fixed by screws 60 to form any kind of rotating arm hinge.

[0010] Design Scheme 3: The rotating component is rotating component b, which includes a shaft hole B, a shaft hole extension edge b, a bent outer angle Ab, a vertical folded edge b, a bent outer angle Bb, a connecting part D, a connecting plate b, and a slot b formed by the connecting part D and the connecting plate b. It consists of, in sequence, a shaft hole B, a shaft hole extension edge b, a bent outer angle Ab, a slanted folded edge b, a bent outer angle Bb, a connecting part D, and a slot b. The connecting plate b has several insertion clips b that engage with rectangular insertion holes b on the vertical folded edge b of the rotating component b. The insertion clips b are movably connected to or welded to the rectangular insertion holes b on the vertical folded edge b. The connecting part D has countersunk screw holes b, and the connecting plate b has threaded holes B. The connecting part D of the rotating component b is connected and fixed to the outer connecting part B of the rotating arm by screws. Any type of rotating arm hinge is formed by the movable or fixed connection of the outer connecting part B of the rotating arm to the slot b.

[0011] Design Scheme 4: The rotating component is rotating component c, which includes a shaft hole B, a shaft hole extension edge b, a bent outer angle Ab, a vertical folded edge b, a bent outer angle Bb, a connecting part D, a connecting plate b, and a slot b formed by the connecting part D and the connecting plate b. It consists of, in sequence, a shaft hole B, a shaft hole extension edge b, a bent outer angle Ab, a slanted folded edge b, a bent outer angle Bb, a connecting part D, and a slot b. The connecting plate b and the connecting part D are provided with several pin holes c for installing pins c. The connecting part D of the rotating arm c is provided with a T-slot c and a locking hole c for matching and connecting with the rotating component c. The locking hole c on the connecting part D of the rotating arm c is locked and fixed by a locking screw c. Any type of rotating arm hinge is formed by connecting the extended connecting part Bc of the rotating arm c with the slot b.

[0012] In summary, the beneficial technical effects of this swivel hinge door leaf fixing structure are as follows:

[0013] (i) It allows for a larger opening angle of the swivel arm hinge, even enabling 180-degree opening. When the opening angle of the hinge via the first axis (door frame connecting axis) is insufficient, the opening angle can be compensated by the second axis (door leaf connecting axis).

[0014] (ii) Due to the rotating parts, the concave space groove is designed to make way for the door frame when the door is opened, increasing the opening angle of the door. At the same time, it can accommodate the door sealing strip, so that the door sealing strip continuously improves the sealing performance between the door and the door frame.

[0015] (iii) Since the connecting shaft 3 has threaded holes C31 at both ends, the washer 5 is movably connected to the two shaft ends by the flat head screw 6, which greatly improves the axial load capacity of the door hinge plate 1. Compared with multi-axis multi-swivel arm hinges, the load capacity is strong, it is not easy to produce abnormal noise, and the manufacturing cost is low, which has a high cost performance.

[0016] (iv) The design of the longitudinal or transverse elongated mounting holes on the mounting foot plate of the door leaf hinge plate and the connection part A of the rotating part and the connection part B of the swivel arm can adjust the relative position so that the door leaf and the hinge can be adjusted in at least two dimensions. Attached Figure Description

[0017] Figure 1 This is a three-dimensional illustration of the structure of this utility model.

[0018] Figure 2 This is an exploded perspective view of the structure of this utility model.

[0019] Figure 3 This diagram illustrates the technical features of the door hinge plate of this utility model.

[0020] Figure 4 This is a three-dimensional diagram illustrating the structure of the positioning device.

[0021] Figure 5 This is a three-dimensional diagram illustrating the connecting shaft structure.

[0022] Figure 6 Figure 1 illustrates the technical features of an eccentric screw.

[0023] Figure 7 Figure (II) illustrates the technical features of eccentric screws.

[0024] Figure 8 This is a plan view illustrating the technical features of the rotating component.

[0025] Figure 9 This is a three-dimensional illustration of the technical features of the rotating component.

[0026] Figure 10 This is a diagram illustrating the technical features of the utility model structure and the hinge-connecting part of the hinge-connecting part.

[0027] Figure 11 This is a three-dimensional illustration of the technical features of the swing arm connection.

[0028] Figure 12 This is a plan view illustrating the technical features of rotating component 2a.

[0029] Figure 13 A three-dimensional illustration of the technical features of rotating component 2a.

[0030] Figure 14 This is a plan view illustrating the technical features of rotating component 2b.

[0031] Figure 15 A three-dimensional illustration of the technical features of rotating component 2b.

[0032] Figure 16 A three-dimensional illustration of the technical features of rotating component 2b.

[0033] Figure 17 This is a plan view illustrating the technical features of rotating component 2c.

[0034] Figure 18 A three-dimensional illustration of the technical features of rotating component 2c.

[0035] Figure 19 This is a three-dimensional illustration of the technical features of the connecting part of the swing arm C. Detailed Implementation

[0036] See attached document Figure 1 -picture 7The present invention will be further described in conjunction with the embodiments: A door leaf opening angle swivel arm hinge fixing seat structure includes a door leaf hinge plate 1, a rotating part 2, a connecting shaft 3, a positioning device 4, a washer 5, a flat-head screw 6, a flat support part 7, a set screw or an elastic cylindrical pin 8, and an eccentric adjusting screw assembly 9. The eccentric adjusting screw assembly 9 includes an eccentric screw 91, a washer 92, and a locking nut 93. The eccentric screw 91 includes a threaded part 911, a cylindrical eccentric head 912, or a conical eccentric head 912a. The threaded part 911 passes through an elongated hole 29 on the connecting part A26 of the rotating part 2 and is movably connected and fixed to the connecting part A26 of the rotating part 2 by the locking nut 93. The door leaf hinge plate 1 includes a shaft hole A11, a screw sleeve 12, a threaded hole A13, and a mounting foot plate 14. The threaded sleeve 12 is welded to the outer circle of the shaft hole A11 or integrally precision-cast. The threaded hole A13 of the threaded sleeve 12 is perpendicular to and intersects the center line of the shaft hole A11, passing through the hole wall of the shaft hole A11. The positioning device 4 is matched and installed with the threaded hole A13. The mounting foot plate 14 is provided with at least a plurality of longitudinal or transverse elongated or circular mounting holes 15. The longitudinal or transverse elongated mounting holes 15 allow the position of the door hinge plate 1 relative to the door leaf in the longitudinal or transverse direction to be adjustable. The positioning device 4 includes at least a tubular part with external threads. The device consists of a body 41, a compression spring 42, and steel balls 43. The connecting shaft 3 has a positioning and limiting groove 32 or positioning hole for the steel balls 43 at a position corresponding to the circumferential position of the positioning device 4, restricting the relative free rotation or rotation into position of the door hinge plate 1 relative to the connecting shaft 3. The positioning and limiting groove 32 is designed with an arc-shaped movable surface 321 and a stop surface 322. The door hinge plate 1 is connected to the shaft hole B21 of the rotating component 2 via the connecting shaft 3. The connecting shaft 3 has threaded holes C31 at both ends, and is secured by flat-head screws 6. The shim 5 is movably connected to the two shaft ends to enhance the axial load-bearing capacity of the door hinge plate 1; the shaft hole A11 of the door hinge plate 1 is rotatably connected to the connecting shaft 3; the rotating part 2 and the connecting shaft 3 are fixedly connected to the shaft hole B21 of the rotating part 2 by a set screw or a flexible cylindrical pin 8; the planar support 7 is provided at the outer end of the shaft hole B21 of the rotating part 2 and abuts against the inner end face of the shaft hole A11 of the door hinge plate 1 to form an adjustable door opening angle rotating arm hinge fixing seat. The rotating part 2 is connected to the connecting part B51 of the rotating arm hinge through the extended connecting part A26. When the rotating arm of the rotating arm hinge rotates around the door frame axis to the limit angle, the rotational force overcomes the locking force of the positioning device 4, and the door hinge plate 1 continues to rotate around the connecting shaft 3, which can increase the opening angle of the rotating arm hinge (door leaf), and even allow the rotating arm hinge (door leaf) to open to a 180-degree angle.

[0037] The planar support 7 includes a planar bearing structure consisting of a bushing with a planar shim or two planar shims with a copper shim sandwiched between them, or a steel ball planar bearing or a simple planar washer.

[0038] In addition, the connection part A26 of the rotating member 2 and the connection part B51 of the rotating arm 50 of the rotating arm hinge can have the following structures:

[0039] Preferred Option 1: Refer to Appendix Figures 8-11 The rotating component 2 includes a shaft hole B21, a shaft hole extension edge 22, a bent outer angle A23, a slanted folded edge 24, a bent outer angle B25, a connecting part A26, and a concave space slot 30. It is composed of the shaft hole B21, the shaft hole extension edge 22, the bent outer angle A23, the slanted folded edge 24, and the bent outer angle B25 forming the extended connecting part A26 and the concave space slot 30. The concave space slot 30 is designed to accommodate the door leaf sealing strip on the T-shaped cover edge of the door leaf, thereby increasing the sealing performance of the door product. The connecting part A26 is provided with several threaded holes B28 and elongated holes 29 for connecting with the swivel arm hinge; the eccentric adjusting screw assembly 9 is provided on the connecting part A26 with elongated holes 29 to adjust the relative position of the swivel arm 50 of the swivel arm hinge and the rotating part 2 (i.e., adjust the left and right gaps between the door leaf and the door frame); the outer connecting part B51 of the swivel arm 50 of the swivel arm hinge is provided with several elongated oval fixing holes 511, circular positioning holes 512 and guide support surfaces 513, and the cylindrical eccentric head 912 or the conical eccentric head 912a is positioned and installed with the circular positioning hole 512 of the swivel arm 50. The outer connecting part A26 of the rotating part 2 is connected and fixed by screws 60 to form any kind of swivel arm hinge.

[0040] Preferred Option 2: Refer to Appendix Figures 12-13 The rotating component 2 is a rotating component 2a, which includes a shaft hole B21, a shaft hole extension edge 22, a bent outer angle A23, a beveled edge 24, a bent outer angle B25, a connecting part C26a, and a concave space slot 30. It is sequentially composed of the shaft hole B21, the shaft hole extension edge 22, the bent outer angle A23, the beveled edge 24, the bent outer angle B25, the connecting part C26a, and the concave space slot 30. The connecting part C26a is provided with several elongated oval fixing holes 511, circular positioning holes 512, and guide support surfaces 513. The outer connecting part B51 of the swing arm 50 is provided with several threaded holes B28 and an upper elongated hole 29. The eccentric adjusting screw assembly 9 is provided in the upper elongated hole 29 of the connecting part B51 to adjust the relative position of the swing arm 50 and the rotating part 2 of the swing arm hinge (i.e., adjust the left and right gaps between the door leaf and the door frame). The cylindrical eccentric head 912 or the conical eccentric head 912a is positioned and installed with the circular positioning hole 512 of the connecting part C26a of the rotating part 2a. The connecting part C26a of the rotating part 2a is connected and fixed by screws 60 to form any kind of swing arm hinge.

[0041] Preferred Option 3: Refer to Appendix Figures 14-16The rotating component 2 is a rotating component 2b, which includes a shaft hole B21, a shaft hole extension edge 22b, a bent outer angle A23b, a vertical folded edge 24b, a bent outer angle B25b, a connecting part D26b, a connecting plate 27b, and the connecting part D26b forming an insertion slot 28b with the connecting plate 27b. It consists of the shaft hole B21, the shaft hole extension edge 22b, the bent outer angle A23b, the vertical folded edge 24b, the bent outer angle B25b, the connecting part D26b, and the insertion slot 28b in sequence. The connecting plate 27b is provided with several components that connect with the rotating component 2b. The rectangular insertion hole 2b1 on the vertical folded edge 24b of b is connected to the insertion clip 2b4, which is movably connected to or welded to the rectangular insertion hole 2b1 on the vertical folded edge 24b; the connecting part D26b is provided with a countersunk screw hole 2b2, and the connecting plate 27b is provided with a threaded hole D2b3; the connecting part D26b of the rotating part 2b is connected to and fixed to the outer connecting part B51 of the rotating arm 50 by screws 60; the outer connecting part B51 of the rotating arm 50 is movably connected to or fixedly connected to the insertion slot 28b to form any kind of rotating arm hinge.

[0042] Preferred Option 4: Refer to Appendix Figures 17-19 The rotating component 2 is a rotating component 2c, which includes a shaft hole B21, a shaft hole extension edge 22b, a bent outer angle A23b, a vertical folded edge 24b, a bent outer angle B25b, a connecting part D26b, a connecting plate 27b, and the connecting part D26b forming an insertion slot 28b with the connecting plate 27b. The connecting part D26b and the insertion slot 28b are formed sequentially by the shaft hole B21, the shaft hole extension edge 22b, the bent outer angle A23b, the vertical folded edge 24b, and the bent outer angle B25b. 8b; The connecting plate 27b and the connecting part D26b are provided with a plurality of hanging pin holes 2c3 for mounting hanging pins 2c1; The outer connecting part B51c of the rotating arm 50c is provided with a T-shaped slot 511c and a locking hole 512c for matching and connecting with the rotating part 2c, and the locking hole 512c on the outer connecting part B51c of the rotating arm 50c is locked and fixed by a locking screw 2c2; The outer connecting part B51c of the rotating arm 50c and the insertion slot 28b are connected to form any kind of rotating arm hinge.

[0043] Of course, there are many other solutions, which will not be elaborated here.

[0044] Finally, it should be noted that the above-listed embodiments are merely preferred embodiments of this utility model. Obviously, it is not limited to the above embodiments, and many variations are possible. All structural, principle, and shape variations (specifically referring to the connection method and structural shape of the connection between the rotating part and the hinge of the rotating arm) that can be directly derived or conceived by those skilled in the art from the content disclosed in this utility model should be considered within the protection scope of this utility model.

Claims

1. A door leaf opening angle compensation arm hinge fixing seat structure, comprising at least a door leaf hinge plate (1), a rotating component (2), a connecting shaft (3), a positioning device (4), a flat support component (7), a set screw or a resilient cylindrical pin (8), and an eccentric adjusting screw assembly (9), characterized in that: The eccentric adjusting screw assembly (9) includes an eccentric screw (91), a washer (92), and a locking nut (93). The eccentric screw (91) includes a threaded portion (911), a cylindrical eccentric head (912), or a conical eccentric head (912a). The threaded portion (911) passes through an elongated hole (29) on the connecting portion A (26) of the rotating part (2) and is movably fixed to the connecting portion A (26) of the rotating part (2) by the locking nut (93). The door hinge plate (1) includes a shaft hole A ( 11) A threaded sleeve (12), a threaded hole A (13), and a mounting foot plate (14). The threaded sleeve (12) is welded to the outer circle of the shaft hole A (11) or integrally precision-cast. The threaded hole A (13) of the threaded sleeve (12) is perpendicular to and intersects the center line of the shaft hole A (11) and passes through the hole wall of the shaft hole A (11). The positioning device (4) is matched and installed with the threaded hole A (13). The mounting foot plate (14) is provided with at least a number of longitudinal or transverse elongated or circular mounting holes (15). The positioning device (4) includes at least The device consists of a tubular body (41) with external threads, a compression spring (42), and steel balls (43). The connecting shaft (3) has at least a steel ball (43) positioning and limiting groove (32) or positioning hole at the circumferential position of the corresponding positioning device (4) to restrict the door hinge plate (1) from rotating freely relative to the connecting shaft (3) or rotating into position. The positioning and limiting groove (32) is designed with an arc-shaped movable surface (321) and a stop surface (322). The door hinge plate (1) is connected to the rotating part (2) via the connecting shaft (3). The shaft hole B (21) is connected, and the shaft hole A (11) of the door hinge plate (1) is rotatably connected to the connecting shaft (3). The rotating part (2) and the connecting shaft (3) are fixedly connected by a set screw or an elastic cylindrical pin (8). The planar support (7) is provided at the outer end of the shaft hole B (21) of the rotating part (2) and abuts against the inner end face of the shaft hole A (11) of the door hinge plate (1) to form a rotating arm hinge fixing seat that can adjust the opening angle of the door.

2. The door leaf opening angle compensation arm hinge fixing seat structure according to claim 1, characterized in that: The planar support (7) includes a planar bearing structure consisting of a bushing with a planar gasket or two planar gaskets with a copper gasket sandwiched between them, or a steel ball planar bearing or a simple planar washer.

3. A door leaf opening angle compensation arm hinge fixing seat structure according to any one of claims 1 to 2, characterized in that: The rotating component (2) includes a shaft hole B (21), a shaft hole extension edge (22), a bent outer angle A (23), a beveled edge (24), a bent outer angle B (25), a connecting part A (26), and a concave space slot (30), which are formed sequentially by the shaft hole B (21), the shaft hole extension edge (22), the bent outer angle A (23), the beveled edge (24), and the bent outer angle B (25) to form the extended connecting part A (26) and the concave space slot (30); the connecting part A (26) is provided with several threaded holes B (28) and elongated holes (29) for connection with the hinge of the rotating arm; the eccentric adjusting screw assembly The component (9) has an elongated hole (29) on the connecting part A (26) to adjust the relative position of the rotating arm (50) and the rotating part (2) of the rotating arm hinge; the outer connecting part B (51) of the rotating arm (50) of the rotating arm hinge is provided with several elongated oval fixing holes (511), circular positioning holes (512) and guide support surfaces (513). The cylindrical eccentric head (912) or the conical eccentric head (912a) is positioned and installed with the circular positioning hole (512) of the rotating arm (50). The outer connecting part A (26) of the rotating part (2) is connected and fixed by screws (60) to form any kind of rotating arm hinge.

4. A door leaf opening angle compensation arm hinge fixing seat structure according to any one of claims 1 to 2, characterized in that: The rotating component (2) is a rotating component (2a), which includes a shaft hole B (21), a shaft hole extension edge (22), a bent outer angle A (23), a slanted edge (24), a bent outer angle B (25), a connecting part C (26a), and a concave space slot (30). It is composed of the shaft hole B (21), the shaft hole extension edge (22), the bent outer angle A (23), the slanted edge (24), and the bent outer angle B (25) forming the connecting part C (26a) and the concave space slot (30). The connecting part C (26a) is provided with several elongated oval fixing holes (511), circular positioning holes (512), and guides. To the support surface (513), the extension connection part B (51) of the swing arm (50) is provided with several threaded holes B (28) and an upper elongated hole (29). The eccentric adjusting screw assembly (9) is provided on the upper elongated hole (29) of the connection part B (51) to adjust the relative position of the swing arm (50) and the rotating part (2) of the swing arm hinge. The cylindrical eccentric head (912) or the conical eccentric head (912a) is positioned and installed with the circular positioning hole (512) of the swing arm (50). The connection part C (26a) of the rotating part (2a) is connected and fixed by screws (60) to form any kind of swing arm hinge.

5. A door leaf opening angle compensation arm hinge fixing seat structure according to any one of claims 1 to 2, characterized in that: The rotating component (2) is a rotating component (2b), which includes a shaft hole B (21), a shaft hole extension edge (22b), a bent outer angle A (23b), a vertical fold edge (24b), a bent outer angle B (25b), a connecting part D (26b), a connecting plate (27b), and the connecting part D (26b) forming an insertion slot (28b) with the connecting plate (27b). It is formed by the shaft hole B (21), the shaft hole extension edge (22b), the bent outer angle A (23b), the vertical fold edge (24b), the bent outer angle B (25b), the connecting part D (26b), and the insertion slot (28b) in sequence. The connecting plate (27b) is provided with several vertical folds that connect with the rotating component (2b). A plug-in head (2b4) is inserted into a rectangular plug-in hole (2b1) on the edge (24b). The plug-in head (2b4) is movably connected to the rectangular plug-in hole (2b1) on the vertical folded edge (24b) or welded and fixed. The connecting part D (26b) is provided with a countersunk screw hole (2b2), and the connecting plate (27b) is provided with a threaded hole D (2b3). The extended connecting part D (26b) of the rotating part (2b) is connected and fixed to the extended connecting part B (51) of the rotating arm (50) by a screw (60). The extended connecting part B (51) of the rotating arm (50) is movably connected to or fixedly connected to the plug-in slot (28b) to form any kind of rotating arm hinge.

6. A door leaf opening angle compensation arm hinge fixing seat structure according to any one of claims 1 to 2, characterized in that: The rotating component (2) is a rotating component (2c). The rotating component (2c) includes a shaft hole B (21), a shaft hole extension edge (22b), a bent outer angle A (23b), a vertical folded edge (24b), a bent outer angle B (25b), a connecting part D (26b), a connecting plate (27b), and the connecting part D (26b) and the connecting plate (27b) forming an insertion slot (28b). It is formed by the shaft hole B (21), the shaft hole extension edge (22b), the bent outer angle A (23b), the vertical folded edge (24b), the bent outer angle B (25b), the connecting part D (26b), and the insertion slot (28b) in sequence. The connecting plate (27b) and the connecting part D (26b) are provided with a plurality of pin holes (2c3) for mounting pins (2c1); the outer connecting part B (51c) of the rotating arm (50c) is provided with a T-slot (511c) and a locking hole (512c) for matching and connecting with the rotating part (2c), and the locking hole (512c) on the outer connecting part B (51c) of the rotating arm (50c) is locked and fixed by a locking screw (2c2); any kind of rotating arm hinge is formed by connecting the outer connecting part B (51c) of the rotating arm (50c) and the insertion slot (28b).

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