Single-axis large-angle three-dimensional blind hinge

Abstract

The utility model discloses a single axle big angle three -dimensional hidden hinge, it mainly includes door frame fixed seat, swing arm subassembly, mandrel, T type adjusting support leg and plane bearing are composed. The swing arm subassembly includes swing arm A, swing arm B and countersunk screw and is composed of detachable structure or integral structure, swing arm A is equipped with fixed portion A, connecting portion A and the connecting section between fixed portion A and connecting portion A, and the connecting section is multiple edge shape or arc formation structure, swing arm B fixed portion B and connecting portion B 90 degrees form, be equipped with a group of screw hole A with countersunk screw matching on connecting portion B, swing arm A is fixedly connected through countersunk screw and swing arm B, and the brain head of countersunk screw is level swing arm A connecting portion A mounting surface design, and the swing arm subassembly's axle hole B is movably connected with door frame fixed seat axle hole A through mandrel and forms big angle hidden hinge structure, and the both ends of mandrel are welded or riveted or screw connection fixed with the outside of door frame fixed seat axle hole A.

Description

Technical Field

[0001] This utility model relates to a single-axis large-angle three-dimensional concealed hinge structure, which belongs to door hinge product components. Background Technology

[0002] Hinges are a crucial component of door products. Especially for steel doors, concealed hinges are typically concealed arm hinges, with a single pivot mounted on the door frame, and the pivot arm fixed and non-removable. Single-pivot pivot arm hinges are simple in structure and widely used in security doors. Single-pivot hinges, especially concealed hinges, have a limited opening angle due to their single-pivot rotation, generally opening to around 115-120 degrees. This limitation results in a larger door gap (2.5-3.5mm) that cannot be adjusted, making assembly and installation of the door leaf and frame inconvenient. In recent years, the market demand for concealed hinges for security doors has been increasing. Therefore, developing a concealed arm hinge that is easy to assemble, adjust, and install, allows for door leaf removal, has a small door gap, a large opening angle, and can withstand heavy door leaves 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 concealed hinge structure with single-axis three-dimensional adjustment and a large opening angle, which can achieve a hinge opening of more than 160 degrees.

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

[0005] Option 1: A single-axis, large-angle, three-dimensional concealed hinge, mainly composed of a door frame fixing base, a swivel arm assembly, a spindle, a T-shaped adjusting foot, and a plane bearing. The swivel arm assembly includes swivel arm A, swivel arm B, and countersunk screws forming a detachable or integral structure. Swivel arm A has a fixing part A, a connecting part A, and a connecting section between the fixing part A and the connecting part A. The connecting section is a multi-folded or arc-shaped structure. Swivel arm B has a 90-degree angled fixing part B and a set of threaded holes A matching the countersunk screws. Swivel arm A is fixedly connected to swivel arm B via countersunk screws or is movable in one direction, allowing adjustment of the distance between the two swivel arms and fixing them into a swivel arm assembly structure. The countersunk screws rotate flush with the head. The mounting surface design of the arm A connection part A results in better arm connection strength, stronger hinge load-bearing capacity, and an overall aesthetically pleasing appearance. The shaft hole B of the arm assembly is movably connected to the shaft hole A on the door frame fixing seat through a spindle to form a large-angle concealed hinge structure. The two ends of the spindle are welded, riveted, or screwed to the outside of the shaft hole A on the door frame fixing seat, and the angle limiting connection plate design greatly improves the load-bearing capacity of the upper and lower mounting plates A of the door frame fixing seat. The mounting plate B of the arm B fixing part B is equipped with a pair of T-shaped adjusting feet, which are threaded to the mounting plate B to adjust the distance between the door leaf and the door frame.

[0006] The door frame fixing seat includes a connecting part C and a fixing part C. The connecting part C includes a symmetrically designed mounting plate A, an angle limiting connecting plate, and a shaft hole A. The door frame fixing seat is welded together from the connecting part C, the mounting plate A, and the fixing part C, or is an integral precision-cast structure. The fixing part C is provided with at least one set of horizontal or vertical elongated mounting holes A, which can adjust the front-back or vertical position of the hinge relative to the door frame.

[0007] In addition, the connecting part A of the rotating arm A is designed with a U-shaped positioning groove or without a U-shaped positioning groove. The U-shaped positioning groove can enhance the connection strength between the two arms and can also guide and adjust the distance between the two arms. The connecting part A is provided with a set of open and set with matching countersunk screw conical holes or closed circular / slender conical surface connecting holes. The open conical surface connecting holes facilitate the installation and adjustment of the door leaf and the door frame.

[0008] Furthermore, the mounting plate B of the fixing part B of the rotating arm B is provided with at least one set of vertical or horizontal elongated mounting holes B and two threaded holes B. The vertical or horizontal elongated mounting holes B can realize the vertical or horizontal position adjustment of the door leaf and the door frame.

[0009] Furthermore: the aforementioned planar bearing is a combination of a planar washer and a shaft hole sleeve, or a ball bearing, or a planar washer.

[0010] Furthermore: the T-shaped adjusting leg is provided with an external thread that matches the threaded hole B, and the threaded end is provided with an internal hexagonal hole.

[0011] Option 2: Based on the previous technical solution, the connecting part of the hinge arm assembly can be designed as follows: The hinge arm assembly includes hinge arm Aa, hinge arm Ba, and countersunk screws. Hinge Aa has a fixing part A, a connecting part Aa, and a connecting section between the fixing part A and the connecting part Aa. The connecting section is a multi-folded or arc-shaped structure. The connecting part Aa has a set of threaded holes A that match the countersunk screws. Hinge Ba has a fixing part B and a connecting part B. a. The connecting part Ba of the rotating arm Ba is designed without a U-shaped positioning groove or with a U-shaped positioning groove positioning structure. The connecting part Ba has a set of openings and is provided with circular / slender conical connecting holes with matching countersunk screw conical holes or closed openings. The rotating arm Aa is fixedly connected to the rotating arm Ba by countersunk screws or is movably connected and fixed in one direction to form a rotating arm assembly. The head of the countersunk screw is flush with the mounting surface A of the connecting part Ba of the rotating arm Ba. The rotating arm assembly is movably connected to the shaft hole A on the door frame fixing seat through the spindle to form a large-angle concealed hinge. The two ends of the spindle are welded, riveted or fixed to the door frame fixing seat 1 by screws. The mounting plate B of the fixing part B of the rotating arm Ba is provided with a pair of T-shaped adjusting feet. The T-shaped adjusting feet are threadedly connected to the mounting plate B.

[0012] In summary, the beneficial technical effects of this utility model are as follows:

[0013] (i) Due to the design of the swing arm assembly, a larger concave space groove is provided to allow room for the door frame when the door is opened, increasing the door opening angle. The hinge opening angle is larger, achieving an opening angle of over 160 degrees. The hinge is equipped with an angle limiting connecting plate that is welded, riveted, or screwed to the upper and lower mounting plates A of the door frame fixing seat at both ends of the spindle. This prevents the door from damaging the door frame when opening and improves the hinge's load-bearing capacity.

[0014] (ii): The door leaf sealing strip is continuously installed to improve the sealing performance between the door leaf and the door frame.

[0015] (III): By designing horizontal or vertical elongated mounting holes A and B in the fixing part (door leaf connection part) of the rotating arm A and the rotating arm B, combined with the T-shaped adjustment foot, the three-dimensional adjustment function of the hinge can be easily realized. Compared with the three-dimensional adjustment component, it is more economical to adjust the three-dimensional adjustment function. Compared with multi-axis multi-rotor hinges, it has a strong load-bearing capacity, is not easy to produce abnormal noise, and has a low manufacturing cost, thus having a high cost performance. Attached Figure Description

[0016] Figure 1 This is a three-dimensional illustration of the concealed hinge assembly of this utility model.

[0017] Figure 2 This is an exploded perspective view of the door frame fixing seat and rotating arm assembly of this utility model.

[0018] Figure 3 This is a three-dimensional illustration of the door frame fixing seat structure of this utility model.

[0019] Figure 4 This is a three-dimensional illustration of the rotating arm B structure of this utility model.

[0020] Figure 5 This is a front view illustration of the rotating arm B of this utility model.

[0021] Figure 6 This is a front view of the rotating arm A of this utility model.

[0022] Figure 7 Figure 1 illustrates the technical features of the side of the rotating arm A of this utility model.

[0023] Figure 8 Figure 2 illustrates the technical features of the side of the rotating arm A of this utility model.

[0024] Figure 9 This is a diagram illustrating the technical features of the rotating arm A of this utility model.

[0025] Figure 10 This is a three-dimensional structural illustration of Scheme 2 of this utility model.

[0026] Figure 11 This is a three-dimensional illustration of the rotating arm assembly of the second embodiment of this utility model.

[0027] Figure 12 This is an exploded perspective view of the rotating arm assembly of the second embodiment of this utility model.

[0028] Figure 13 This diagram illustrates the technical features of the T-shaped adjustable support leg of this utility model.

[0029] Figure 14 This is a schematic diagram showing the connection between the concealed hinge of this utility model and the door leaf and door frame, and the door opening angle. Detailed Implementation

[0030] See attached document Figures 1-14 The present invention will be further described in conjunction with the embodiments: Scheme 1: A single-axis large-angle three-dimensional concealed hinge, which mainly comprises a door frame fixing base 1, a rotating arm assembly 2, a spindle 3, a T-shaped adjusting support 4, and a plane bearing 5. The rotating arm assembly 2 includes a rotating arm A21, a rotating arm B22, and a countersunk screw 23. The rotating arm A21 is provided with a fixing part A211, a connecting part A212, and a connecting section 213 between the fixing part A211 and the connecting part A212. The connecting section 213 is a multi-folded edge or arc-shaped structure. The fixing part B221 and the connecting part B222 of the rotating arm B22 are formed at 90 degrees. The connecting part B222 is provided with a set of threaded holes A223 that match the countersunk screw 23. The rotating arm A21 is fixedly connected to the rotating arm B22 by the countersunk screw 23 or is movable in one direction, which can adjust the distance between the two rotating arms and fix them to form a rotating arm assembly 2. Structure; The countersunk screw 23 is flush with the mounting surface (215) of the connecting part A212 of the rotating arm A21. This design makes the connecting strength of the rotating arm better, the bearing capacity of the hinge stronger, and the overall appearance more beautiful; The shaft hole B216 of the rotating arm assembly 2 is movably connected to the shaft hole A15 on the door frame fixing seat 1 through the spindle 3 to form a large-angle concealed hinge structure. The two ends of the spindle 3 are welded, riveted or screwed to the outside of the shaft hole A15 of the door frame fixing seat 1 and the angle limiting connecting plate 14 are designed to greatly improve the bearing capacity of the upper and lower mounting plates A13 of the door frame fixing seat 1; The mounting plate B226 of the fixing part B221 of the rotating arm B22 is provided with a pair of T-shaped adjusting feet 4. The T-shaped adjusting feet 4 are threadedly connected to the mounting plate B226 to adjust the distance between the door leaf and the door frame.

[0031] The door frame fixing seat 1 includes a connecting part C11 and a fixing part C12. The connecting part C11 includes a symmetrically designed mounting plate A13, an angle limiting connecting plate 14, and a shaft hole A15. The door frame fixing seat 1 is welded together from the connecting part C11, the mounting plate A13, and the fixing part C12 or is an integral precision-cast structure. The fixing part C12 is provided with at least one set of horizontal or vertical elongated mounting holes A16, which can adjust the front-back or vertical position of the hinge relative to the door frame.

[0032] In addition, the connecting part A212 of the rotating arm A21 is designed with a U-shaped positioning groove 217 or without a U-shaped positioning groove. The U-shaped positioning groove can enhance the connection strength between the two arms and can also guide and adjust the distance between the two arms. The connecting part A212 is provided with a set of open and set with matching countersunk screws 23 conical holes or closed circular / slender conical surface connecting holes 214. The open conical surface connecting holes facilitate the installation and adjustment of the door leaf and the door frame.

[0033] Furthermore, the mounting plate B226 of the fixing part B221 of the rotating arm B22 is provided with at least one set of vertical or horizontal elongated mounting holes B224 and two threaded holes B225. The vertical or horizontal elongated mounting holes B224 can realize the vertical or horizontal position adjustment of the door leaf and the door frame.

[0034] Furthermore: the plane bearing 5 is a combination of a plane washer and a shaft hole sleeve, or a steel ball plane bearing or a plane washer.

[0035] Furthermore: the T-shaped adjusting foot 4 is provided with an external thread 41 that matches the threaded hole B225, and the threaded end is provided with an internal hexagonal hole 42.

[0036] Option 2: Based on the previous technical solution, the connecting part of the hinge arm assembly can be designed as follows: The hinge arm assembly 2 includes a hinge arm Aa21a, a hinge arm Ba22a, and a countersunk screw 23. The hinge arm Aa21a has a fixing part A211, a connecting part Aa212a, and a connecting section 213 between the fixing part A211 and the connecting part Aa212a. The connecting section 213 is a multi-folded or arc-shaped structure. The connecting part Aa212a has a set of threaded holes A223 that match the countersunk screw 23. The hinge arm Ba22a has a fixing part B221 and a connecting part Ba222a. The connecting part Ba22a of the hinge arm Ba22a... 222a is designed without a U-shaped positioning groove 217 or with a U-shaped positioning groove positioning structure. The connecting part Ba222a has a set of openings and is provided with a circular / slender conical connecting hole 214 with a matching countersunk screw 23 conical hole or a closed opening. The rotating arm Aa21a is fixedly connected to the rotating arm Ba22a by the countersunk screw 23 or is movably connected and fixed in one direction to form the rotating arm assembly 2. The head of the countersunk screw 23 is flush with the mounting surface A215a of the connecting part Ba22a of the rotating arm Ba22a. The rotating arm assembly 2 is movably connected to the shaft hole A15 on the door frame fixing seat 1 by the spindle 3 to form a large-angle concealed hinge. The two ends of the spindle 3 are welded, riveted or fixed to the door frame fixing seat 1 by screws. The mounting plate B226 of the fixing part B221 of the rotating arm Ba22a is provided with a pair of T-shaped adjusting feet 4. The T-shaped adjusting feet 4 are threadedly connected to the mounting plate B226.

[0037] 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 shape of the swing arm) that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A single-axis large-angle three-dimensional concealed hinge, mainly comprising a door frame fixing seat (1), a swivel arm assembly (2), a spindle (3), a T-shaped adjusting foot (4), and a plane bearing (5), characterized in that: The rotating arm assembly (2) includes a rotating arm A (21), a rotating arm B (22), and countersunk screws (23) forming a detachable or integral structure. The rotating arm A (21) is provided with a fixing part A (211), a connecting part A (212), and a connecting section (213) between the fixing part A (211) and the connecting part A (212). The connecting section (213) is a multi-folded or arc-shaped structure. The rotating arm B (22) is provided with a fixing part B (221) and a connecting part B (222). The connecting part B (222) is provided with a set of threaded holes A (223) that match the countersunk screws (23). The rotating arm A (21) is fixedly connected to the rotating arm B (22) by the countersunk screws (23) or is movable in one direction. The fixed assembly of the rotating arm (2) is designed with countersunk screws (23) flush with the mounting surface (215) of the connecting part A (212) of the rotating arm (21); the shaft hole B (216) of the rotating arm assembly (2) is movably connected to the shaft hole A (15) on the door frame fixing seat (1) through the spindle (3) to form a large-angle concealed hinge. The two ends of the spindle (3) are welded, riveted or screwed to the outside of the shaft hole A (15) of the door frame fixing seat (1); a pair of T-shaped adjusting feet (4) are provided on the mounting plate B (226) of the fixing part B (221) of the rotating arm (22), and the T-shaped adjusting feet (4) are threadedly connected to the mounting plate B (226).

2. The single-axis large-angle three-dimensional concealed hinge according to claim 1, characterized in that: The door frame fixing seat (1) includes a connecting part C (11) and a fixing part C (12). The connecting part C (11) includes a symmetrically designed mounting plate A (13), an angle limiting connecting plate (14), and a shaft hole A (15). The door frame fixing seat (1) is composed of the connecting part C (11) and the fixing part C (12) welded together or integrally precision cast. The fixing part C (12) is provided with at least one set of horizontal or vertical elongated mounting holes A (16).

3. The single-axis large-angle three-dimensional concealed hinge according to claim 1, characterized in that: The connecting part A (212) of the rotating arm A (21) is designed with a U-shaped positioning groove (217) or without a U-shaped positioning groove; the connecting part A (212) is provided with a set of openings and circular / slender conical connecting holes (214) with matching countersunk screws (23) conical holes or closed openings.

4. A single-axis large-angle three-dimensional concealed hinge according to claim 1, characterized in that: The mounting plate B (226) of the fixing part B (221) of the rotating arm B (22) is provided with at least one set of vertical or horizontal elongated mounting holes B (224) and two threaded holes B (225).

5. A single-axis large-angle three-dimensional concealed hinge according to claim 1, characterized in that: The planar bearing (5) is a combination of a planar washer and a shaft hole sleeve, or a steel ball planar bearing or a planar washer.

6. A single-axis large-angle three-dimensional concealed hinge according to claim 1, characterized in that: The T-shaped adjusting foot (4) is provided with an external thread (41) that matches the threaded hole B (225), and the threaded end is provided with an internal hexagonal hole (42).

7. A single-axis large-angle three-dimensional concealed hinge according to any one of claims 1 to 6, mainly comprising a door frame fixing seat (1), a swivel arm assembly (2), a spindle (3), a T-shaped adjusting support (4), and a plane bearing (5), characterized in that: The rotating arm assembly (2) includes a rotating arm Aa (21a), a rotating arm Ba (22a), and a countersunk screw (23). The rotating arm Aa (21a) is provided with a fixing part A (211), a connecting part Aa (212a), and a connecting section (213) between the fixing part A (211) and the connecting part Aa (212a). The connecting section (213) is a multi-folded or arc-shaped structure. The connecting part Aa (212a) is provided with a set of threaded holes A (223) that match the countersunk screw (23). The rotating arm Ba (22a) is provided with a fixing part B (221) and a connecting part Ba (222a). The connecting part Ba (222a) of the rotating arm Ba (22a) is designed without a U-shaped positioning groove (217) or with a U-shaped positioning groove positioning structure. (222a) is provided with a set of openings and round / slender conical connecting holes (214) with matching countersunk screws (23) conical holes or closed holes; the rotating arm Aa (21a) is fixedly connected to the rotating arm Ba (22a) by countersunk screws (23) or is movably connected in one direction and fixed to form a rotating arm assembly (2), the head of the countersunk screws (23) is flush with the mounting surface A (215a) of the connecting part Ba (222a) of the rotating arm Ba (22a); the rotating arm assembly (2) is movably connected to the shaft hole A (15) on the door frame fixing seat (1) by the spindle (3) to form a large-angle concealed hinge, the two ends of the spindle (3) are welded, riveted or fixedly connected to the door frame fixing seat (1); the mounting plate B (226) of the fixing part B (221) of the rotating arm Ba (22a) is provided with a pair of T-shaped adjusting feet (4), the T-shaped adjusting feet (4) are threadedly connected to the mounting plate B (226).

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