A concealed hinge for armored doors

Abstract

The utility model discloses a hidden hinge for armored door, including first hinge fixed seat and second hinge fixed seat, be connected with hinge leaf subassembly between first hinge fixed seat and second hinge fixed seat, the inside of first hinge fixed seat and second hinge fixed seat all have first chamber, the inside fixed connection of first chamber has first connecting rod and second connecting rod, hinge leaf subassembly includes pivot and with pivot rotation connection's first hinge leaf, second hinge leaf, third hinge leaf and fourth hinge leaf, the utility model discloses first hinge fixed seat and second hinge fixed seat, can be embedded door body or door frame inside installation, when armored door closes, only can see the closure gap of door body and door frame from outside, and the beautiful performance of installation is hiddenly increased, and also can prevent external force direct impact or pry hinge fixed seat, reduce the risk of hinge being destroyed.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically to a concealed hinge for armored doors. Background Technology

[0002] Armored doors are a new type of security door, characterized by a robust steel structure in the center of the door leaf, with attractive and easily replaceable finishing materials on both the front and back surfaces. These finishes can be made of aluminum, copper, glass, composite wood, solid wood, etc., offering many unique advantages. With technological advancements, armored doors now offer not only anti-theft functions but also fireproofing, explosion-proofing, bulletproofing, sound insulation, heat insulation, and security features. Traditional armored doors often use hinge structures that expose the hinge mounting points on the outside of the door or frame. These exposed hinge mounting points not only disrupt the overall aesthetics of the door but also make it an easy target for external attacks. Attackers can directly impact or pry the exposed mounting points, reducing the security performance of the armored door.

[0003] Based on the above, this utility model proposes a concealed hinge for armored doors, which can effectively solve the above problems. Utility Model Content

[0004] This utility model addresses the shortcomings of the existing technology by providing a concealed hinge for armored doors.

[0005] This utility model is achieved through the following technical solution:

[0006] A concealed hinge for an armored door includes a first hinge fixing seat and a second hinge fixing seat, with a hinge piece assembly connected between the first and second hinge fixing seats. Each of the first and second hinge fixing seats has a first chamber, with a first connecting rod and a second connecting rod fixedly connected inside the first chamber. The hinge piece assembly includes a pivot and a first hinge piece, a second hinge piece, a third hinge piece, and a fourth hinge piece rotatably connected to the pivot. One end of the first and third hinge pieces is rotatably connected to the first connecting rod on the first hinge fixing seat, and the other end of the first and third hinge pieces is rotatably connected to the second connecting rod on the second hinge fixing seat. One end of the second and fourth hinge pieces is rotatably connected to the second connecting rod on the first hinge fixing seat, and the other end of the second and fourth hinge pieces is rotatably connected to the first connecting rod on the second hinge fixing seat.

[0007] According to the above technical solution, as a further preferred technical solution, both ends of the first hinge fixing seat and the second hinge fixing seat have a second chamber, and hollow fixing columns are fixedly connected to the two sides of the interior of the second chamber respectively; the top of the fixing column abuts against a connecting piece for closing the second chamber, and the two sides of the connecting piece are respectively provided with a first fixing hole corresponding to the fixing column.

[0008] According to the above technical solution, as a further preferred technical solution, one side of the connecting piece is fixedly connected to an outwardly extending opening portion.

[0009] According to the above technical solution, as a further preferred technical solution, a groove is provided on the top of one side wall of the second chamber for the opening part to pass through.

[0010] According to the above technical solution, as a further preferred technical solution, both ends of the first hinge fixing seat and the second hinge fixing seat are fixedly connected to fixing plates, and the fixing plates are provided with multiple second fixing holes.

[0011] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0012] This utility model provides a concealed hinge for armored doors. By setting a first hinge fixing seat and a second hinge fixing seat, it can be embedded inside the door body or door frame for installation. When the armored door is closed, only the closed gap between the door body and the door frame is visible from the outside, which increases the aesthetics of the installation. It can also prevent external forces from directly impacting or prying the hinge fixing seat, reducing the risk of hinge damage. At the same time, the first connecting rod and the second connecting rod inside the first chamber of the first hinge fixing seat and the second hinge fixing seat form a stable connection structure with the hinge plate assembly. Even if the fixing seat is hidden, the load-bearing capacity of the hinge can still be ensured, and structural loosening caused by hidden installation can be avoided. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the hinge plate assembly structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the first hinge fixing seat or the second hinge fixing seat of this utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the first or second hinge fixing seat of this utility model. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0018] A concealed hinge for an armored door includes a first hinge fixing seat 1 and a second hinge fixing seat 2, with a hinge piece assembly 3 connected between them. Both the first and second hinge fixing seats 1 and 2 have a first chamber 4 inside, with a first connecting rod 5 and a second connecting rod 6 fixedly connected inside the first chamber 4. The hinge piece assembly 3 includes a pivot 7 and a first hinge piece 8, a second hinge piece 9, a third hinge piece 10, and a fourth hinge piece 11 rotatably connected to the pivot 7. One end of the first hinge piece 8 and the third hinge piece 10 is rotatably connected to the first connecting rod 5 on the first hinge fixing seat 1, and the other end is rotatably connected to the second connecting rod 6 on the second hinge fixing seat 2. One end of the second hinge piece 9 and the fourth hinge piece 11 is rotatably connected to the second connecting rod 6 on the first hinge fixing seat 1, and the other end is rotatably connected to the first connecting rod 5 on the second hinge fixing seat 2.

[0019] This utility model, by setting a first hinge fixing seat 1 and a second hinge fixing seat 2, can be embedded inside the door body or door frame for installation. When the armored door is closed, only the closed gap between the door body and the door frame can be seen from the outside, which increases the aesthetic performance of the installation. It can also prevent external forces from directly impacting or prying the hinge fixing seat, reducing the risk of the hinge being damaged. At the same time, the first connecting rod 5 and the second connecting rod 6 inside the first chamber 4 of the first hinge fixing seat 1 and the second hinge fixing seat 2 form a stable connection structure with the hinge piece assembly 3. Even if the fixing seat is hidden, the load-bearing capacity of the hinge can still be ensured, and structural loosening caused by hidden installation can be avoided.

[0020] Furthermore, in another embodiment, both ends of the first hinge fixing seat 1 and the second hinge fixing seat 2 have a second chamber 12, and hollow fixing posts 13 are fixedly connected to the inner sides of the second chamber 12 respectively; the top of the fixing post 13 abuts against a connecting piece 14 for closing the second chamber 12, and the two sides of the connecting piece 14 are respectively provided with first fixing holes 15 corresponding to the fixing posts 13.

[0021] By setting a hollow fixed column 13 inside the second chamber 12, it is easy to insert bolts. With the first fixed hole on the connecting piece 14, it is easy to embed the entire concealed hinge into the door body or door frame.

[0022] Furthermore, in another embodiment, an outwardly extending opening portion 16 is fixedly connected to one side of the connecting piece 14. A groove 17 is provided on the top of one side wall of the second chamber 12 for the opening portion 16 to pass through.

[0023] By providing the opening part 16, when it is necessary to disassemble or maintain the concealed hinge, the connecting piece 14 can be quickly lifted through the opening part 16, and the second chamber 12 can be opened without additional tools; at the same time, the groove 17 on the top of the side wall of the second chamber 12 cooperates with the opening part 16 to provide a passage for the opening part 16, ensuring that the connecting piece 14 can be opened and closed normally after installation.

[0024] Furthermore, in another embodiment, both ends of the first hinge fixing seat 1 and the second hinge fixing seat 2 are fixedly connected with fixing pieces 18, and the fixing pieces 18 are provided with a plurality of second fixing holes 19.

[0025] By setting fixing pieces 18 at both ends of the first hinge fixing seat 1 and the second hinge fixing seat 2, the fixing pieces 18 can be bolted to the door body or door frame through multiple second fixing holes 19. This makes the connection between the hinge and the door body more secure, and is especially suitable for heavy doors such as armored doors.

[0026] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the concealed hinge for armored doors of this utility model, and can produce the positive effects described in this utility model.

[0027] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0028] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A concealed hinge for an armored door, characterized in that: The system includes a first hinge fixing seat (1) and a second hinge fixing seat (2), with a hinge plate assembly (3) connected between the first hinge fixing seat (1) and the second hinge fixing seat (2). Both the first hinge fixing seat (1) and the second hinge fixing seat (2) have a first chamber (4). A first connecting rod (5) and a second connecting rod (6) are fixedly connected inside the first chamber (4). The hinge plate assembly (3) includes a pivot (7) and a first hinge plate (8), a second hinge plate (9), a third hinge plate (10), and a fourth hinge plate (11) rotatably connected to the pivot (7). One end of the first hinge piece (8) and the third hinge piece (10) are rotatably connected to the first connecting rod (5) on the first hinge fixing seat (1), and the other end of the first hinge piece (8) and the third hinge piece (10) are rotatably connected to the second connecting rod (6) on the second hinge fixing seat (2); one end of the second hinge piece (9) and the fourth hinge piece (11) are rotatably connected to the second connecting rod (6) on the first hinge fixing seat (1), and the other end of the second hinge piece (9) and the fourth hinge piece (11) are rotatably connected to the first connecting rod (5) on the second hinge fixing seat (2).

2. The concealed hinge for an armored door according to claim 1, characterized in that: Both ends of the first hinge fixing seat (1) and the second hinge fixing seat (2) have a second chamber (12), and hollow fixing posts (13) are fixedly connected to the two sides of the interior of the second chamber (12); the top of the fixing post (13) abuts against a connecting piece (14) for closing the second chamber (12), and the two sides of the connecting piece (14) are respectively provided with a first fixing hole (15) corresponding to the fixing post (13).

3. A concealed hinge for an armored door according to claim 2, characterized in that: One side of the connecting piece (14) is fixedly connected to an outwardly extending opening (16).

4. A concealed hinge for an armored door according to claim 3, characterized in that: The top of one side wall of the second chamber (12) is provided with a groove (17) through which the opening part (16) passes.

5. A concealed hinge for an armored door according to claim 1, characterized in that: The top ends of the first hinge fixing seat (1) and the second hinge fixing seat (2) are fixedly connected with fixing pieces (18), and the fixing pieces (18) are provided with multiple second fixing holes (19).

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