Hidden type thick and heavy fire hydrant cabinet door opening structure

By designing a 180-degree concealed hinge and snap-fit ​​structure, the problem of the concealed fire hydrant box door being difficult to open on heavy materials was solved, achieving complete exposure of fire equipment and smooth, aesthetically pleasing operation.

CN223867835UActive Publication Date: 2026-02-03NO 1 CONSTR ENG CO LTD BEIJING CITY CONSTR
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Patent Information

Application Number
CN202520428886.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-12
Publication Date
2026-02-03
Estimated Expiration
2035-03-12

AI Technical Summary

Technical Problem

When using heavy materials such as stone, the doors of existing concealed fire hydrant boxes cannot meet the strength requirements for opening 180 degrees, resulting in difficulty in opening and affecting the access to fire-fighting equipment.

Method used

Employing a 180-degree concealed hinge and snap-fit ​​structure, the fire hydrant box door can be fully opened and flush against the wall through the cooperation of the first connecting frame, mounting rod, rotating rod, and L-shaped rotating rod. Combined with the design of clamping parts and springs, the structure's stability and aesthetics are ensured.

Benefits of technology

It achieves complete exposure of the equipment inside the fire hydrant box, ensuring smooth operation and aesthetics, avoiding obstruction, and meeting the opening requirements of heavy, concealed doors.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a hidden type thick and heavy fire hydrant cabinet door opening structure which comprises a fixed square block arranged in an inner cavity of a wall face, an embedded fire hydrant cabinet is fixedly installed in the inner cavity of the wall face, and a fire hydrant cabinet door is arranged on one side of the embedded fire hydrant cabinet. The left side of an inner cavity of the embedded fire hydrant cabinet is fixedly connected with a fixed square block, the right side of the fixed square block is fixedly connected with a first connecting frame, and one side of the fire hydrant cabinet door is fixedly connected with a second connecting frame. The embedded type fire hydrant cabinet has the beneficial effects that the first connecting frame, the mounting rod and the rotating rod are matched for use, so that the two rotating sleeves on the front side rotate on the surface of the connecting rod, and then the L-shaped rotating rod, the mounting rotating rod and the rotating rod are matched for use, so that the fire hydrant cabinet door rotates on one side of the embedded type fire hydrant cabinet; therefore, the fire hydrant cabinet door can be opened when being opened, and finally the fire hydrant cabinet door can be completely opened and attached to the wall face.
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Description

Technical Field

[0001] This utility model belongs to the technical field of fire hydrant box doors, and in particular relates to a concealed, heavy-duty fire hydrant box door opening structure. Background Technology

[0002] Indoor fire hydrant boxes are one of the core facilities of a building's fire protection system. They are mainly used for emergency fire extinguishing and fire rescue support in the early stages of a fire. Their structure consists of a box, fire hydrant valve body, fire hose, water gun, alarm button, and auxiliary equipment. They are usually made of materials such as cold-rolled steel plate and aluminum alloy, and the surface is sprayed with fire-retardant coating to enhance durability. The box design is divided into three forms: surface mounting, concealed mounting, and semi-concealed mounting, which can be selected according to the building layout to ensure that it does not affect the use of space and is easy to access in an emergency. The box is embedded in the wall, and the surface is flush with the wall, which is aesthetically pleasing and does not occupy indoor space.

[0003] Concealed design allows fire hydrant box doors to blend seamlessly with the wall. However, when using heavy, thick materials like stone as the door, ordinary hinges cannot meet the load-bearing requirements or achieve the required opening angle. This can lead to problems such as difficult door opening and hinge damage, affecting access to fire equipment. Therefore, we need to design a concealed, heavy-duty fire hydrant box door opening structure using a 180-degree hidden hinge and locking mechanism. The fire hydrant door can open 180 degrees, unlike some traditional designs that cannot. This design, which meets the strength and 180-degree opening angle requirements, is suitable for concealed doors made of thick stone. It allows the door to open completely and fit flush against the wall, fully exposing the fire hoses, nozzles, and valves inside the fire hydrant box without any obstruction, ensuring smooth operation. Utility Model Content

[0004] The purpose of this utility model is to provide a concealed, heavy-duty fire hydrant box door opening structure that meets the angle requirements. It is suitable for heavy stone concealed doors and has the advantage of being able to open fully and fit against the wall. It solves the problem of the fire hoses, nozzles, fire hydrant valves and other equipment inside the fire hydrant box being completely exposed without any obstruction.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A concealed heavy-duty fire hydrant box door opening structure, which includes a fixed square block set in the inner cavity of the wall: an embedded fire hydrant box is fixedly installed in the inner cavity of the wall, a fire hydrant box door is provided on one side of the embedded fire hydrant box, the left side of the inner cavity of the embedded fire hydrant box is fixedly connected to the fixed square block, the right side of the fixed square block is fixedly connected to a first connecting frame, and the side of the fire hydrant box door is fixedly connected to a second connecting frame. The inner cavities of the first connecting frame and the second connecting frame are each provided with two symmetrical rotating sleeves. An installation rod is fixedly connected to the surface of the rear rotating sleeve. The other end of the installation rod is rotatably connected to a rotating rod through a rotating shaft. The end of the rotating rod away from the installation rod is rotatably connected to a connecting rod through a rotating shaft. The end of the connecting rod away from the rotating rod is fixedly connected to the rotating sleeve on the rear side of the inner cavity of the second connecting frame. An L-shaped rotating rod is fixedly connected to the surface of the rotating sleeve on the front side of the inner cavity of the connecting rod. The bottom of the L-shaped rotating rod is rotatably connected to the rotating rod through a rotating shaft.

[0006] The present invention provides a further feature to the concealed heavy-duty fire hydrant box door opening structure described above: two symmetrical connecting rods are fixedly connected to the inner cavities of both the first and second connecting frames, and the four connecting rods are rotatably connected to the rotating sleeve.

[0007] The present invention further describes the opening structure for a concealed, heavy-duty fire hydrant box door as described above. The other end of the L-shaped rotating rod is rotatably connected to a mounting rod via a rotating shaft. The end of the mounting rod away from the L-shaped rotating rod is fixedly connected to a rotating sleeve on the front side of the inner cavity of the second connecting frame.

[0008] The present invention further describes the door opening structure for a concealed, heavy-duty fire hydrant box as described above. A fixed long plate is fixedly connected to the right side of the top of the inner cavity of the embedded fire hydrant box, and an mounting plate is fixedly connected to the surface of the fixed long plate.

[0009] The present invention further comprises the following: A door opening structure for a concealed, heavy-duty fire hydrant box as described above.

[0010] Two symmetrical arc-shaped plates are fixedly connected to the central axis on the front side of the mounting plate, and a fixing rod is fixedly connected to the opposite side of the two arc-shaped plates.

[0011] The present invention further comprises the following: A door opening structure for a concealed, heavy-duty fire hydrant box as described above.

[0012] The surface of the fixed rod is rotatably connected to two clamping members, and a side connecting plate is fixedly connected to each of the two clamping members on opposite sides.

[0013] The present invention further comprises the following: A door opening structure for a concealed, heavy-duty fire hydrant box as described above.

[0014] Both of the side connecting plates are fixedly connected to the rear side with sleeve rods, and springs are sleeved on the surface of the sleeve rods. The two ends of the springs are welded to the mounting plate and the side connecting plate, respectively.

[0015] The present invention further comprises the following: A door opening structure for a concealed, heavy-duty fire hydrant box as described above.

[0016] A fixing circle is fixedly connected to the right side of the top rear side of the fire hydrant box door, and the two clamping parts are adapted to the fixing circle.

[0017] The present invention further comprises the following: A door opening structure for a concealed, heavy-duty fire hydrant box as described above.

[0018] A square groove is provided on the front side of the fire hydrant box door.

[0019] The present invention further comprises the following: A door opening structure for a concealed, heavy-duty fire hydrant box as described above.

[0020] The surfaces of the two clamping members are provided with circular holes for the fixing rod to pass through, and the surfaces of the rotating rod and the L-shaped rotating rod are provided with circular grooves for the rotating shaft to rotate.

[0021] 1. The beneficial effects of this utility model are: through the coordinated use of the first connecting frame, the mounting rod and the rotating rod, the two rotating sleeves on the front side rotate on the surface of the connecting rod. Then, through the coordinated use of the L-shaped rotating rod, the mounting rotating rod and the rotating rod, the fire hydrant box door rotates on one side of the embedded fire hydrant box, thereby allowing the fire hydrant box door to open to a certain degree. Finally, the fire hydrant box door can be fully opened and fit against the wall. It is suitable for concealed doors made of thick stone, so that the fire hoses, water guns, fire hydrant valves and other equipment inside the fire hydrant box are fully exposed without any obstruction, ensuring smooth operation.

[0022] 2. This utility model uses a combination of a fixing rod and clamping parts. When the two clamping parts rotate on the surface of the fixing rod, the fixing rod guides the clamping parts, ensuring that the two clamping parts can tightly clamp the fixed circle when rotating, thus improving the tightness of the fit between the embedded fire hydrant box and the fire hydrant box door.

[0023] 3. This utility model uses the side connecting plate and spring in combination. The spring can provide appropriate elastic force between the side connecting plate and the fixed circle, so that the side connecting plate and the fixed circle can maintain a tight connection. The elastic force of the spring can ensure a tight fit between the clamping part and the spring, preventing the fixed circle from loosening due to vibration during an accident, thus ensuring the stability and reliability of the structure.

[0024] 4. This utility model achieves a concealed effect by setting a square groove in the fire hydrant box door. It is aesthetically pleasing, makes good use of space, and is safe and convenient. The concealed effect of the square groove makes the surface of the fire hydrant box door simpler and smoother, without any protruding handles or other protruding parts, making the embedded fire hydrant box more concealed when embedded in the wall cavity. Attached Figure Description

[0025] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention.

[0026] Figure 1 This is a combined front view perspective view of one embodiment of the present invention.

[0027] Figure 2 This is a front view of an embodiment of the present invention.

[0028] Figure 3 This is a perspective view of the first connecting frame and the rotating rod according to an embodiment of the present utility model;

[0029] Figure 4 This is a top plan view of the fixing rod and spring according to one embodiment of the present invention;

[0030] Figure 5 This is a perspective view of the clamping member and the side connecting plate according to one embodiment of the present utility model;

[0031] Figure 6 This is a cross-sectional plan view of a square groove according to an embodiment of the present invention.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Wall surface; 2. Embedded fire hydrant box; 3. Fire hydrant box door; 4. Fixed square block; 5. First connecting frame; 6. Second connecting frame; 7. Connecting rod; 8. Rotating sleeve; 9. Mounting rod; 10. Rotating rod; 11. Connecting rod; 12. L-shaped rotating rod; 13. Mounting rotating rod; 14. Fixed long plate; 15. Mounting plate; 16. Arc plate; 17. Fixed rod; 18. Clamping piece; 19. Side connecting plate; 20. Sleeve rod; 21. Spring; 22. Fixed circle; 23. Square groove. Detailed Implementation

[0034] In the following description, embodiments of the concealed, heavy-duty fire hydrant box door opening structure of this utility model will be described with reference to the accompanying drawings.

[0035] The embodiments described herein are specific implementations of this utility model, used to illustrate the concept of this utility model. They are all illustrative and exemplary, and should not be construed as limiting the implementation methods or scope of this utility model. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0036] The accompanying drawings in this specification are schematic diagrams used to illustrate the concept of this utility model, and schematically show the shapes of the various parts and their interrelationships. Please note that, in order to clearly show the structure of the components of the embodiments of this utility model, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0037] Figure 1-6This invention illustrates a concealed, heavy-duty fire hydrant box door opening structure according to an embodiment of the present invention. It includes a fixed square block 4 disposed within the inner cavity of a wall 1; an embedded fire hydrant box 2 is fixedly installed within the inner cavity of the wall 1; a fire hydrant box door 3 is provided on one side of the embedded fire hydrant box 2; the left side of the inner cavity of the embedded fire hydrant box 2 is fixedly connected to the fixed square block 4; a first connecting frame 5 is fixedly connected to the right side of the fixed square block 4; a second connecting frame 6 is fixedly connected to one side of the fire hydrant box door 3; two symmetrical rotating sleeves 8 are provided within the inner cavities of both the first connecting frame 5 and the second connecting frame 6; two symmetrical connecting rods 7 are fixedly connected to the inner cavities of both the first connecting frame 5 and the second connecting frame 6; the four connecting rods 7 are rotatably connected to the rotating sleeves 8; and the surface of the rear rotating sleeve 8 is fixedly... A mounting rod 9 is fixedly connected to the fire hydrant box 2. The other end of the mounting rod 9 is rotatably connected to a rotating rod 10 via a pivot. The end of the rotating rod 10 away from the mounting rod 9 is rotatably connected to a connecting rod 11 via a pivot. The end of the connecting rod 11 away from the rotating rod 10 is fixedly connected to a rotating sleeve 8 on the rear side of the inner cavity of the second connecting frame 6. An L-shaped rotating rod 12 is fixedly connected to the surface of the rotating sleeve 8 on the front side of the inner cavity of the connecting rod 7. The bottom of the L-shaped rotating rod 12 is rotatably connected to the rotating rod 10 via a pivot. The other end of the L-shaped rotating rod 12 is rotatably connected to a mounting rotating rod 13 via a pivot. The end of the mounting rotating rod 13 away from the L-shaped rotating rod 12 is fixedly connected to the rotating sleeve 8 on the front side of the inner cavity of the second connecting frame 6. A fixed long plate 14 is fixedly connected to the right side of the top of the inner cavity of the embedded fire hydrant box 2. The surface of the fixed long plate 14... A mounting plate 15 is fixedly connected to the front of the fire hydrant box 2. Two symmetrical arc-shaped plates 16 are fixedly connected to the central axis of the front side of the mounting plate 15. A fixing rod 17 is fixedly connected to the opposite side of the two arc-shaped plates 16. Two clamping parts 18 are rotatably connected to the surface of the fixing rod 17. Side connecting plates 19 are fixedly connected to the opposite side of each clamping part 18. Through the cooperation of the fixing rod 17 and the clamping parts 18, when the two clamping parts 18 rotate on the surface of the fixing rod 17, the fixing rod 17 guides the clamping parts 18, ensuring that the two clamping parts 18 can tightly clamp the fixed circle 22 during rotation, improving the tightness of the fit between the embedded fire hydrant box 2 and the fire hydrant box door 3. Sleeve rods 20 are fixedly connected to the rear side of each of the two side connecting plates 19. A spring 21 is fitted onto the surface of the rod 20. The two ends of the spring 21 are welded to the mounting plate 15 and the side connecting plate 19, respectively. Through the cooperation of the side connecting plate 19 and the spring 21, the spring 21 provides appropriate elastic force between the side connecting plate 19 and the fixed circle 22, ensuring a tight connection between them. The elastic force of the spring 21 ensures a tight fit between the clamping member 18 and the spring 21, preventing the fixed circle 22 from loosening due to vibration during accidents, thus guaranteeing the stability and reliability of the structure. A fixed circle 22 is fixedly connected to the right side of the top rear side of the fire hydrant box door 3. Two clamping members 18 are adapted to the fixed circle 22. A square groove 23 is provided on the front side of the fire hydrant box door 3. The square groove 23...A square groove 23 is provided on the fire hydrant box door 3 to achieve a concealed effect, which is aesthetically pleasing, space-efficient, safe, and convenient. The concealed effect of the square groove 23 makes the surface of the fire hydrant box door 3 more concise and smooth, without a protruding handle or other protruding parts, making the embedded fire hydrant box 2 more concealed within the cavity of the wall 1. The surfaces of the two clamping parts 18 have round holes for the fixing rod 17 to pass through, and the surfaces of the rotating rod 10 and the L-shaped rotating rod 12 have round grooves for the rotation of the shaft.

[0038] Working principle: The fire hydrant box door 3 needs to be rotated 180 degrees on one side of the embedded fire hydrant box 2. Then, the user puts their hand into the inner cavity of the square groove 23, causing the two clamping pieces 18 to disengage from the fixed circle 22. This allows the two clamping pieces 18 to rotate relative to each other on the surface of the fixed rod 17. The relative rotation of the two clamping pieces 18 causes them to press against the side connecting plate 19, which in turn presses against the spring 21. The two springs 21 then elastically shorten on the surface of the sleeve rod 20, thereby... This causes the embedded fire hydrant box 2 to disengage from the right side of the fire hydrant box door 3. Then, as the embedded fire hydrant box 2 rotates on the surface of the fire hydrant box door 3, the mounting rod 13 drives the L-shaped rod 12 to rotate via the rotating shaft. This causes the connecting rod 11 to drive the rotating rod 10 to rotate via the rotating shaft. The rotating rod 10 stops rotating, causing the mounting rod 9 to rotate. This causes the connecting rod 11 and the L-shaped rod 12 to rotate. Subsequently, the fire hydrant box door 3 rotates 180 degrees on the surface of the embedded fire hydrant box 2, leaving no obstructions and ensuring smooth operation.

[0039] The technical features disclosed above are not limited to the combinations of the disclosed features with other features. Those skilled in the art can also make other combinations of the technical features according to the purpose of the utility model in order to achieve the purpose of the utility model.

Claims

1. A concealed, heavy-duty fire hydrant box door opening structure, characterized in that, Includes a fixed square block (4) set in the inner cavity of the wall (1): an embedded fire hydrant box (2) is fixedly installed in the inner cavity of the wall (1), a fire hydrant box door (3) is provided on one side of the embedded fire hydrant box (2), the left side of the inner cavity of the embedded fire hydrant box (2) is fixedly connected to the fixed square block (4), a first connecting frame (5) is fixedly connected to the right side of the fixed square block (4), a second connecting frame (6) is fixedly connected to one side of the fire hydrant box door (3), and two symmetrical rotating sleeves (8) are provided in the inner cavities of the first connecting frame (5) and the second connecting frame (6). An mounting rod (9) is fixedly connected to the surface of the rear rotating sleeve (8). The other end of the mounting rod (9) is rotatably connected to a rotating rod (10) via a rotating shaft. The end of the rotating rod (10) away from the mounting rod (9) is rotatably connected to a connecting rod (11) via a rotating shaft. The end of the connecting rod (11) away from the rotating rod (10) is fixedly connected to the rotating sleeve (8) on the rear side of the inner cavity of the second connecting frame (6). An L-shaped rotating rod (12) is fixedly connected to the surface of the rotating sleeve (8) on the front side of the inner cavity of the connecting rod (7). The bottom of the L-shaped rotating rod (12) is rotatably connected to the rotating rod (10) via a rotating shaft.

2. The concealed, heavy-duty fire hydrant box door opening structure according to claim 1, characterized in that, The inner cavities of the first connecting frame (5) and the second connecting frame (6) are each fixedly connected with two symmetrical connecting rods (7), and the four connecting rods (7) are rotatably connected to the rotating sleeve (8).

3. The concealed, heavy-duty fire hydrant box door opening structure according to claim 2, characterized in that, The other end of the L-shaped rotating rod (12) is rotatably connected to the mounting rotating rod (13) via a rotating shaft. The end of the mounting rotating rod (13) away from the L-shaped rotating rod (12) is fixedly connected to the rotating sleeve (8) on the front side of the inner cavity of the second connecting frame (6).

4. The concealed, heavy-duty fire hydrant box door opening structure according to claim 3, characterized in that, A fixed long plate (14) is fixedly connected to the right side of the top of the inner cavity of the embedded fire hydrant box (2), and an mounting plate (15) is fixedly connected to the surface of the fixed long plate (14).

5. The concealed heavy-duty fire hydrant box door opening structure according to claim 4, characterized in that, Two symmetrical arc-shaped plates (16) are fixedly connected to the central axis on the front side of the mounting plate (15), and a fixing rod (17) is fixedly connected to the opposite side of the two arc-shaped plates (16).

6. The concealed, heavy-duty fire hydrant box door opening structure according to claim 5, characterized in that, The surface of the fixed rod (17) is rotatably connected to two clamping members (18), and a side connecting plate (19) is fixedly connected to each of the two clamping members (18) on opposite sides.

7. The concealed, heavy-duty fire hydrant box door opening structure according to claim 6, characterized in that, Both of the two side connecting plates (19) are fixedly connected to the rear side of the sleeve rod (20), and the surface of the sleeve rod (20) is fitted with a spring (21). The two ends of the spring (21) are welded to the mounting plate (15) and the side connecting plate (19) respectively.

8. The concealed heavy-duty fire hydrant box door opening structure according to claim 7, characterized in that, A fixing circle (22) is fixedly connected to the right side of the top rear side of the fire hydrant box door (3), and the two clamping parts (18) are adapted to the fixing circle (22).

9. The concealed, heavy-duty fire hydrant box door opening structure according to claim 8, characterized in that, A square groove (23) is provided on the front side of the fire hydrant box door (3).

10. The concealed heavy-duty fire hydrant box door opening structure according to claim 9, characterized in that, The surfaces of the two clamping members (18) are provided with circular holes through which the fixing rod (17) passes, and the surfaces of the rotating rod (10) and the L-shaped rotating rod (12) are provided with circular grooves for the rotating shaft to rotate.