A modular fire door for ease of installation

Abstract

The utility model discloses a modularization fireproof door convenient to installation. The transmission structure is constituted by door closer, upper guide rail, lower guide rail, connecting seat, connecting rod, upper gear and lower gear, and the transmission structure is arranged on the upper end of the door body, the upper guide rail and the lower guide rail are arranged in parallel and are spaced apart along the door width direction of the upper edge of the door body, the door closer is a strip-shaped shell and is fixed on the upper end of the door body, the upper gear and the lower gear are rotatably arranged at the two ends of the door closer and are engaged with the corresponding guide rail, the connecting seat is located on the upper side of the door closer and is detachably limited and cooperated with the upper guide rail to realize hanging positioning, the connecting rod is connected with the output mechanism of the door closer, and the gear is driven to roll along the guide rail in the opening and closing process of the door body, the door body is provided with slow closing and resetting by the door closer, so that the transmission structure and the door leaf form the functional module that can be integrally assembled and disassembled, the standardization preassembly, the quick alignment and the maintenance are convenient, the hinge adopts the detachable mounting plate structure, and the lock is arranged in the middle part of the vertical edge of the opening and closing side.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and more specifically to a modular fire door that is easy to install. Background Technology

[0002] Most existing fire doors use surface-mounted or concealed door closers. The former requires the installation of supports and connecting rods on the door leaf and frame, involving multiple steps of on-site positioning, drilling, and alignment, and installation errors can easily lead to unsmooth return. The latter requires the creation of a large cavity in the door leaf, which compromises the integrity of the door leaf and increases the difficulty of processing. At the same time, the guide components are mostly set at a single point or on one side, resulting in uneven force on the upper edge of the door. Long-term opening and closing can easily cause swaying and scratching. The maintenance and replacement of the upper door edge components are also more complicated, which is not conducive to mass assembly and subsequent maintenance.

[0003] As shown in application number CN205605023U, "A normally closed fire door with a door closer", the existing fire door has a door closer installed at the top of the door frame. The door closer consists of a sliding assembly, a hydraulic assembly and a straight beam, and cooperates with the door frame through a sliding rail. The door leaf and the door frame are connected by a pin-type mounting assembly with a reset structure to realize opening, reset and closing, which aims to avoid exposed hinges from causing obstacles to pedestrians and improve safety. However, the door closer and guide components of this solution mainly rely on the arrangement on the side of the door frame, and the upper edge of the door leaf lacks a positioning structure. On-site assembly still requires alignment at multiple points on both sides of the door frame and door leaf, and maintenance and replacement also require disassembly and assembly above the door frame. The overall ease of assembly and disassembly and the degree of independent modularity of the door leaf end are limited. Utility Model Content

[0004] The purpose of this utility model is to provide a modular fire door that is easy to install in order to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: This utility model proposes a modular fire door that is easy to install, including a door body, a door lock, a hinge, and a transmission structure disposed at the upper end of the door body. The transmission structure includes a door closer, an upper guide rail, a lower guide rail, a connecting seat, a connecting rod, an upper gear, and a lower gear. The upper and lower guide rails are arranged parallel to each other along the width direction of the upper edge of the door body. The door closer is a strip-shaped shell fixed to the upper end of the door body. The upper and lower gears are respectively rotatably disposed at both ends of the door closer. The upper gear meshes with the upper guide rail, and the lower gear meshes with the lower guide rail. The connecting seat is disposed on the upper side of the door closer for connecting the door closing hinge. The connecting rod is connected to the output mechanism of the door closer and is used to link the gear and the door closer during the opening and closing of the door body, so that the gear rolls along the guide rail and drives the door closer to provide slow closing and reset of the door body, thereby forming a door leaf functional module that can be assembled and disassembled as a whole.

[0006] As a preferred embodiment of this utility model, the upper and lower guide rails are linear rack structures, and the upper and lower gears are involute pinions that are matched with them. The rack teeth are arranged parallel to the upper edge of the door body.

[0007] As a preferred technical solution of this utility model, the upper gear and the lower gear are respectively arranged on the same side at both ends of the door closer, and the door closer is provided with a synchronization mechanism to keep the two gears meshing synchronously for stable guidance.

[0008] As a preferred technical solution of this utility model, the hinge is installed on the vertical side of the door opening and closing side. The hinge is a detachable mounting plate structure and is connected to the door body and door frame by bolts.

[0009] As a preferred embodiment of this utility model, the door lock is installed in the middle of the vertical side of the door's opening and closing side.

[0010] The beneficial effects of this utility model are as follows: This utility model sets up a transmission structure and a door body to form a functional module that can be assembled and disassembled as a whole, supporting factory pre-assembly and quick on-site replacement, reducing the workload of alignment and debugging; the upper and lower guide rails are set parallel and spaced along the door width direction, and with the rolling meshing of the upper and lower gears, they provide stable double-rail guidance at the top edge, reducing the risk of door leaf swaying. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another angle; Figure 3 This is a schematic diagram of the transmission structure of this utility model; Figure 4 This is a schematic diagram of the back structure of the door closer of this utility model.

[0012] Reference numerals in the attached diagram: 1. Transmission structure; 2. Door body; 3. Door lock; 4. Hinge; 11. Door closer; 12. Lower guide rail; 13. Upper guide rail; 14. Connecting seat; 15. Connecting rod; 16. Upper gear; 17. Lower gear. Detailed Implementation Example 1

[0013] like Figures 1 to 4 As shown, this utility model proposes: a modular fire door that is easy to install, including a door body 2, a door lock 3, a hinge 4, and a transmission structure 1 disposed at the upper end of the door body; The transmission structure 1 is pre-installed on the upper edge of the door body 2 and includes a door closer 11, an upper guide rail 13, a lower guide rail 12, a connecting seat 14, a connecting rod 15, an upper gear 16, and a lower gear 17. The upper guide rail 13 and the lower guide rail 12 are arranged parallel to each other along the door width direction and are preferably made of metal rack profiles with the tooth direction parallel to the upper edge of the door body. The door closer 11 is a strip-shaped shell and is fixed in the installation area at the upper end of the door body 2. The upper gear 16 and the lower gear 17 are respectively rotatably equipped at both ends of the door closer 11. The upper gear 16 meshes with the upper guide rail 13 and the lower gear 17 meshes with the lower guide rail 12. The connecting seat 14 is located on the upper side of the door closer 11, and is preferably configured as a slidable snap-fit ​​block. It cooperates with the upper cavity of the upper guide rail 13. The connecting seat 14 is provided with locking elements (such as pressure plates and locking screws) for connecting with the door closer 11 and the door closing structure of the door frame. The connecting rod 15 on the back of the door closer 11 is rotatably connected to the gear structure of the door closer 11 to help the door closer move. Hinges 4 are installed on the opening and closing side of the door body 2 and are connected to the door body and door frame by means of detachable mounting plates and bolts; door locks 3 are arranged in the middle of the opening and closing side of the door body 2; the interior of the door body 2 is made of fireproof core material and covered by metal panels, and the upper and lower guide rails and door closers are reliably connected to the reinforcing members by fasteners.

[0014] The installation and debugging process in this embodiment is as follows: During construction, first fix the hinge 4 to the door frame; then lift the transmission structure 1 as a whole module to the upper edge of the door body, hook it into the upper guide rail 13 through the connecting seat 14 and initially lock it, so that the upper and lower gears mesh with the corresponding guide rails respectively; check the door closer return speed and closing torque to complete the installation; this arrangement concentrates the guiding, slow closing and positioning functions on the upper edge of the door body, forming a functional module that can be assembled and disassembled as a whole, which is convenient for quick replacement and maintenance. Example 2

[0015] In this embodiment, the connecting seat 14 moves back and forth along the upper guide rail 13, which is equivalent to changing the position of the connection point between the output end of the door closing hinge and the door body: when the connecting seat 14 slides closer to the door lock side, the initial angle between the output arm of the door closing hinge and the upper edge of the door body increases, the effective lever arm of the door closer 11 in the initial opening stage decreases, the opening resistance decreases, and the return force and sealing and pressing effect in the closing stage are enhanced. When the connecting seat 14 slides towards the hinge side, the initial included angle decreases, the lever arm of the initial opening section increases, and the opening and closing are smooth. The lever arm of the later closing section decreases relatively, which helps to reduce impact and rebound. It is suitable for lightweight door leaves or scenarios with high requirements for quietness. It can quickly achieve on-site adaptation for different door weights, different sealing conditions and left and right opening directions without changing the specifications of the closing hinge and door closer. Moreover, since the adjustment only occurs on the upper edge of the door body, no secondary drilling or modification is required on the side of the door frame, making maintenance and resetting convenient. To ensure long-term stable operation, positioning scales and positioning holes or toothed baffles are set along the sliding groove to form a slight self-locking at commonly used working positions; anti-loosening washers are used for the locking screws of the connecting seat 14; end blocks are set at the end of the sliding groove to prevent interference with the tooth surface area due to overtravel; if necessary, a safety snap ring is added at the connection between the connecting seat 14 and the door hinge to prevent movement.

[0016] When the closing curve needs to be adjusted or maintenance is required, simply loosen the locking piece of the connecting seat 14 to slide along the upper guide rail 13 to the new setting position or remove it for replacement, without disassembling the door frame end components; the entire transmission structure 1 still maintains its modular characteristics and can be removed as a whole or quickly replaced.

[0017] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0018] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A modular fire door that is easy to install, comprising a door body (2), a door lock (3), a hinge (4), and a transmission structure (1) disposed at the upper end of the door body (2). Its features are, The transmission structure (1) includes a door closer (11), an upper guide rail (13), a lower guide rail (12), a connecting seat (14), a connecting rod (15), an upper gear (16), and a lower gear (17); the upper guide rail (13) and the lower guide rail (12) are arranged parallel to each other along the door width direction of the upper edge of the door body (2); the door closer (11) is a strip-shaped shell and is fixed to the upper end of the door body (2); the upper gear (16) and the lower gear (17) are respectively rotatably arranged at both ends of the door closer (1 ... The wheel (16) meshes with the upper guide rail (13), and the lower gear (17) meshes with the lower guide rail (12); the connecting seat (14) is set on the upper side of the door closer (11) for connecting the door closing hinge; the connecting rod (15) is connected to the output mechanism of the door closer (11) for linking the gear with the door closer (11) during the opening and closing of the door body (2), so that the gear rolls along the guide rail and drives the door closer (11) to provide slow closing and reset to the door body (2), thereby forming a door leaf functional module that can be assembled and disassembled as a whole.

2. The modular fire door for easy installation according to claim 1, characterized in that, The upper guide rail (13) and the lower guide rail (12) are linear rack structures, and the upper gear (16) and the lower gear (17) are involute pinions that match them. The rack teeth are set parallel to the upper edge of the door body (2).

3. The modular fire door for easy installation according to claim 1, characterized in that, The upper gear (16) and the lower gear (17) are respectively set on the same side at both ends of the door closer (11). The door closer (11) is provided with a synchronization mechanism to keep the two gears meshing synchronously for stable guidance.

4. The modular fire door for easy installation according to claim 1, characterized in that, The hinge (4) is installed on the opening and closing side of the door (2). The hinge (4) is a detachable mounting plate structure and is connected to the door (2) and door frame by bolts.

5. A modular fire door that is easy to install according to claim 1, characterized in that, The door lock (3) is installed in the middle of the opening and closing side of the door body (2).

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