A combined heavy-duty fire door eccentric shaft hinge device

Abstract

The utility model relates to the technical field of fire door hinges, and relates to a combined heavy-duty fire door eccentric shaft hinge device. It includes a first upper connecting plate arranged on one side of the top of the fire door and a lower connecting plate arranged on the same side of the bottom of the fire door. The first upper connecting plate is movably arranged on the top of the door frame through a fixed axis, and the lower connecting plate is arranged on a floor spring hinge, which is buried in the ground. The side of the fire door is arranged on the door frame through a number of eccentric hinges. The load-bearing installation box provides a stable installation space and protection for each internal component, and bears the pressure and force of the fire door. The reset spring can store energy after the fire door is pushed open, and quickly releases energy when it is released, pushing the extrusion slider and the push block to reset, so as to realize the automatic closing of the fire door. It has good elasticity and durability, and ensures a long-term and stable reset function. The heavy-duty hardware of this device has models JG‑MJL‑2 and JG‑MJL‑3, which can be adapted to heavy-duty fire doors.

Description

Technical Field

[0001] The utility model relates to the technical field of fire door hinges, in particular to a combined heavy-duty fire door eccentric shaft hinge device. Background Art

[0002] In the field of construction, fire doors are one of the important facilities to ensure the safety of buildings. With the continuous development of construction technology and the increasing requirements for safety performance, higher requirements are also placed on the performance of fire doors and related accessories.

[0003] Traditional fire door hinges often have some limitations in actual use, such as unstable connections, inflexible opening and closing movements, and unreliable reset functions. These problems may affect the normal use and safety performance of fire doors, and they cannot adapt well to various complex usage scenarios and strict safety standards. Utility Model Content

[0004] The utility model aims to provide a combined heavy-duty fireproof door eccentric shaft hinge device to solve the problems raised in the background technology.

[0005] To achieve the above object, the utility model provides the following technical solution, which includes a first upper connecting plate arranged on one side of the top of the fire door and a lower connecting plate arranged on the same side of the bottom of the fire door, the first upper connecting plate is movably arranged on a fixed shaft, the fixed shaft is arranged on the second upper connecting plate, the second upper connecting plate is arranged on the inner side of the top of the door frame, the lower connecting plate is arranged on a floor spring hinge, the floor spring hinge is buried in the ground, and the side of the fire door is arranged on the door frame through a plurality of eccentric hinges;

[0006] The floor spring hinge includes a load-bearing mounting box, a mounting plate is arranged on one side inside the load-bearing mounting box, a return spring is arranged on the side of the mounting plate, an extrusion slider is arranged on the side of the return spring away from the mounting plate, the extrusion slider is movably arranged in the load-bearing mounting box, a bearing is arranged on the top of the side of the load-bearing mounting box away from the mounting plate, a rotating shaft is movably arranged in the bearing, a rotating disk is arranged at the bottom of the rotating shaft, the rotating disk is located in the load-bearing mounting box, an eccentric rod is obliquely arranged on one side of the bottom of the rotating disk, and a push block is arranged at the other end of the eccentric rod.

[0007] As a preferred embodiment of the utility model, the part of the rotating shaft located above the bearing has a triangular cross-section, and a first sleeve is provided on one side of the lower connecting plate. The first sleeve is provided on the rotating shaft, and the inner cavity cross-section of the first sleeve is a triangle.

[0008] As a preferred embodiment of the utility model, a second socket is provided on one side of the first upper connecting plate, and the second socket is movably provided on the fixed shaft.

[0009] Compared with the prior art, the above technical solution of the utility model has the following beneficial technical effects:

[0010] 1. The utility model provides a stable installation space and protection for the internal components by setting a floor spring hinge and a load-bearing installation box, and bears the pressure and force from the fire door. The reset spring can store energy after the fire door is pushed open, and quickly release the energy when it is released, pushing the extrusion slider and the push block to reset, thereby realizing the automatic closing of the fire door. It has good elasticity and durability, ensuring a long-term and stable reset function.

[0011] 2. The utility model provides a plurality of eccentric hinges to ensure that the sides of the fire door are firmly connected to the door frame, thereby ensuring stable support and smooth movement of the sides of the fire door during opening and closing, while sharing the weight and force of the fire door.

[0012] 3. The utility model provides a stable connection and support for the top of the fire door by setting the first upper connecting plate at the top of the door frame through a fixed axis, ensuring that the top of the fire door has a reliable fixing point during the opening and closing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model installed on a fire door;

[0014] Figure 2 This is a schematic diagram of the floor spring hinge structure of the utility model;

[0015] Figure 3 This is a top view of the floor spring hinge of the utility model;

[0016] Figure 4 This is a side view of the floor spring hinge of the utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the lower connecting plate of the utility model;

[0018] Figure 6 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 7 This is a schematic diagram of the structure of the first upper connecting plate of the utility model;

[0020] Figure 8 for Figure 1 Enlarged view of point B in the middle;

[0021] Fig. 9 It is a structural schematic diagram of the eccentric hinge of the utility model after being unfolded.

[0022] Figure numerals: floor spring hinge 1, load-bearing mounting box 10, bearing 11, rotating shaft 12, mounting plate 13, return spring 14, extrusion slider 15, rotating disk 16, eccentric rod 17, push block 18, lower connecting plate 2, first socket 20, first upper connecting plate 3, fixed shaft 30, second socket 31, second upper connecting plate 32, eccentric hinge 4, fire door 5. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0024] like Figure 1-Figure 9 As shown, the utility model proposes a combined heavy-duty fire door eccentric shaft hinge device, which includes a first upper connecting plate 3 arranged on one side of the top of the fire door 5 and a lower connecting plate 2 arranged on the same side of the bottom of the fire door 5, wherein the first upper connecting plate 3 is movably arranged on a fixed shaft 30, the fixed shaft 30 is arranged on a second upper connecting plate 32, the second upper connecting plate 32 is arranged on the inner side of the top of the door frame, and a second plug sleeve 31 is arranged on one side of the first upper connecting plate 3, and the second plug sleeve 31 is movably sleeved on the fixed shaft 30; the lower connecting plate 2 is arranged on a floor spring hinge 1, and the floor spring hinge 1 is buried in the ground;

[0025] The floor spring hinge 1 includes a load-bearing installation box 10, a mounting plate 13 is arranged on one side of the load-bearing installation box 10, a return spring 14 is installed on the side of the mounting plate 13, an extrusion slider 15 is arranged on the side of the return spring 14 away from the mounting plate 13, and the extrusion slider 15 is movably arranged in the load-bearing installation box 10, a bearing 11 is arranged on the top of the side of the load-bearing installation box 10 away from the mounting plate 13, a rotating shaft 12 is movably installed in the bearing 11, and a bottom of the rotating shaft 12 is arranged A rotating disk 16 is disposed in the load-bearing mounting box 10. An eccentric rod 17 is obliquely disposed on one side of the bottom of the rotating disk 16. A push block 18 is disposed on the other end of the eccentric rod 17. The cross section of the portion of the rotating shaft 12 located above the bearing 11 is triangular. A first plug sleeve 20 is disposed on one side of the lower connecting plate 2. The first plug sleeve 20 is sleeved on the rotating shaft 12, and the inner cavity cross section of the first plug sleeve 20 is also triangular. The side of the fire door 5 is also disposed on the door frame through a plurality of eccentric hinges 4.

[0026] Furthermore, the heavy-duty hardware of the device has models JG-MJL-2 and JG-MJL-3, which can be adapted to heavy-duty fireproof doors.

[0027] As an optimization solution of the utility model, the setting of the first sleeve 20 ensures a close fit and transmission with the rotating shaft 12. The triangular inner cavity section matches the triangular cross-section of the rotating shaft 12, ensuring the accuracy and stability of the transmission without slipping, and can accurately transmit the force of the fire door 5 to rotate; the rotating shaft 12 realizes power transmission through rotation, and its triangular cross-section design increases the reliability of the transmission.

[0028] The working principle of the floor spring hinge 1 is as follows: when someone pushes to open the fire door 5, the rotation of the fire door 5 will drive the lower connecting plate 2 to rotate together. Since the first socket 20 is arranged on the rotating shaft 12, the rotating shaft 12 will also rotate therewith. When the rotating shaft 12 starts to rotate, it will also rotate with the rotating disk 16 at its bottom. Further, the rotating disk 16 will drive the eccentric rod 17 to rotate, thereby prompting the push block 18 to move in the load-bearing installation box 10. When the push block 18 contacts the extrusion slider 15, it will push the extrusion slider 15 to move to the left, thereby squeezing the reset spring 14 to make it contract. When the person releases the fire door 5, the reset spring 14 will rebound and reset quickly, and then push the push block 18 back to its original position through the extrusion slider 15, thereby restoring the entirety to its original position, and finally achieving the effect of automatically closing the fire door 5.

[0029] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A combined heavy-duty fire door eccentric shaft hinge device, comprising a first upper connecting plate (3) arranged on one side of the top of the fire door (5) and a lower connecting plate (2) arranged on the same side of the bottom of the fire door (5), characterized in that: The first upper connecting plate (3) is movably arranged on a fixed shaft (30), the fixed shaft (30) is arranged on a second upper connecting plate (32), the second upper connecting plate (32) is arranged on the inner side of the top of the door frame, the lower connecting plate (2) is arranged on a floor spring hinge (1), the floor spring hinge (1) is buried in the ground, and the side of the fire door (5) is arranged on the door frame through a plurality of eccentric hinges (4); The floor spring hinge (1) comprises a load-bearing installation box (10), a mounting plate (13) is arranged on one side of the load-bearing installation box (10), a return spring (14) is arranged on the side of the mounting plate (13), an extrusion slider (15) is arranged on the side of the return spring (14) away from the mounting plate (13), the extrusion slider (15) is movably arranged in the load-bearing installation box (10), a bearing (11) is arranged on the top of the side of the load-bearing installation box (10) away from the mounting plate (13), a rotating shaft (12) is movably arranged in the bearing (11), a rotating disk (16) is arranged at the bottom of the rotating shaft (12), the rotating disk (16) is located in the load-bearing installation box (10), an eccentric rod (17) is obliquely arranged on one side of the bottom of the rotating disk (16), and a push block (18) is arranged at the other end of the eccentric rod (17).

2. A combined heavy-duty fire door eccentric shaft hinge device according to claim 1, characterized in that: The portion of the rotating shaft (12) located above the bearing (11) has a triangular cross-section. A first plug sleeve (20) is provided on one side of the lower connecting plate (2). The first plug sleeve (20) is sleeved on the rotating shaft (12). The inner cavity of the first plug sleeve (20) has a triangular cross-section.

3. A combined heavy-duty fire door eccentric shaft hinge device according to claim 2, characterized in that: A second plug sleeve (31) is provided on one side of the first upper connecting plate (3), and the second plug sleeve (31) is movably arranged on the fixed shaft (30).

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