Fireproof door closer reverse installation structure

Abstract

The utility model discloses a fireproof door closer reverse installation structure, including the door frame of setting in the wall, the door frame is hinged with the door leaf, is provided with the closer between the door leaf and the door frame, the closer is located in the room, the closer includes the closer main part of installing through bolt on the door leaf, relate to closer reverse installation structure technical field, through installing L shape expansion plate on the door frame, the hinging seat of closer is installed to L shape expansion plate to need not to carry out the reform to the door frame, realize the direct installation of closer, thereby make the reverse installation of closer more convenient, because L shape expansion plate is directly fixed on the door frame, thus being convenient for the reverse installation reformation to normal fireproof door, the length of L shape expansion plate can adjust, thereby to the clearance between the indoor face of door leaf and the door frame, through the length of L shape expansion plate to adjust the included angle of the connecting rod of closer, thereby make closer normal use, make the installation of the closer of different fireproof door more flexible.

Description

Technical Field

[0001] This utility model relates to the technical field of door closer reverse installation structure, specifically a fire door closer reverse installation structure. Background Technology

[0002] Utility model patent CN222350530U discloses a reverse-mounted structure for a fire door closer, including an adapter, a reverse-mounted plate, and a door closer. The adapter is fixed to the door frame fixing keel on the outside of the door frame's push-door surface by anchor bolts, and the bottom end of the adapter is flush with the bottom end of the door frame's push-door surface. The reverse-mounted plate is an L-shaped plate, with its outer horizontal section fixed to the adapter by connecting bolts, its inner horizontal section abutting against the bottom surface of the door frame, and its vertical plate extending vertically downward from the outer end of its horizontal section. The door closer is located on the closed side of the door leaf, its body fixed to the door leaf, and the connecting seat at the end of its connecting rod fixed to the vertical plate of the reverse-mounted plate. The adapter is made of channel steel, with the channel steel opening facing the door frame. The length of the lower wing plate of the adapter is shorter than the length of its upper wing plate, and the anchor bolts are located on the portion of the upper wing plate that extends beyond the lower wing plate. The outer surface of the inverted mounting plate is flush with the outer surface of the adapter seat web. A reinforcing lining plate is provided on the inner side of the door leaf push surface corresponding to the fixing position of the door closer body. By adding an adapter seat before fixing the keel (or building the wall lintel) to the door frame, a stable anchor point is provided for the door closer. Furthermore, the inverted mounting plate securely installs the door closer between the push surface on the closing side of the door leaf and the adapter seat, ensuring good stress distribution on the door closer, increasing its service life, and improving construction quality.

[0003] The above-mentioned patents have the following shortcomings:

[0004] A door frame fixing keel needs to be installed at the top of the door frame. Therefore, when designing fire doors, a larger door opening needs to be reserved to accommodate the door frame fixing keel and the door frame.

[0005] Normally, the top of a door frame is a wall. Therefore, if a door closer needs to be modified from a standard door closer to a reverse door closer, it is impossible to modify the door closer because it is not possible to fix the keel to the top of the door frame.

[0006] When the door is closed, the back of the door (outdoor side) is aligned with the wall. However, there is a gap between the front of the door panel (indoor side) and the edge of the door frame. Therefore, after the hinge seat and the door closer body are installed on the door frame and the door panel respectively, the angle of the door closer linkage is not suitable and cannot be adjusted, which affects the normal use of the door closer. Utility Model Content

[0007] In view of the problems existing in the reverse installation structure of a fire door closer, this utility model is proposed.

[0008] Therefore, the purpose of this utility model is to provide a reverse-installation structure for fire door closers, which solves the problem of the aforementioned patents requiring the installation of a door frame fixing keel at the top of the door frame. This necessitates reserving a larger door opening to accommodate the door frame fixing keel and the door frame during fire door design. Furthermore, since the wall is above a normal door frame, it is impossible to modify a normally installed door closer into a reverse-installation structure because a door frame fixing keel cannot be installed at the top of the door frame. After the door is closed, the back of the door (outdoor) is aligned with the wall, but there is a gap between the front of the door panel (indoor side) and the edge of the door frame. Therefore, after installing the hinge seat and the door closer body onto the door frame and door panel respectively, the angle of the door closer linkage is unsuitable and cannot be adjusted, thus affecting the normal use of the door closer.

[0009] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0010] A reverse-mounted structure for a fire door closer includes a door frame installed in a wall, a door leaf hinged to the door frame, a door closer installed between the door leaf and the door frame, the door closer being located indoors, the door closer including a door closer body bolted to the door leaf, the door closer body being connected to a hinge seat via a connecting rod, the hinge seat being mounted on an L-shaped telescopic plate, and the L-shaped telescopic plate being mounted on the door frame.

[0011] As a preferred embodiment of the reverse installation structure of the fire door closer described in this utility model, the L-shaped telescopic plate includes an L-shaped mounting plate, a threaded rod is welded on the L-shaped mounting plate, the other end of the threaded rod is threadedly connected to a support pipe, and the support pipe is installed on the door frame.

[0012] In a preferred embodiment of the reverse mounting structure of the fire door closer described in this utility model, the hinge seat is mounted on the L-shaped mounting plate by bolts.

[0013] As a preferred embodiment of the reverse installation structure of the fire door closer described in this utility model, wherein: the end of the support tube is welded with an installation piece, and the installation piece is installed on the door frame by bolts.

[0014] As a preferred embodiment of the reverse installation structure of the fire door closer described in this utility model, the hinge seat is made of channel steel, and the opening of the channel steel is set facing the door frame side.

[0015] Compared with existing technologies:

[0016] By installing an L-shaped telescopic plate on the door frame, the hinge seat of the door closer can be installed on the L-shaped telescopic plate, thus eliminating the need to modify the door frame and enabling direct installation of the door closer, making reverse installation of the door closer more convenient.

[0017] Since the L-shaped telescopic plate is directly fixed to the door frame, it is easy to reverse the installation of a normal fire door.

[0018] The length of the L-shaped telescopic plate is adjustable, which allows for adjustment of the angle of the door closer's connecting rod to address the gap between the interior surface of the door leaf and the door frame. This ensures the door closer functions properly and makes the installation of door closers for different fire doors more flexible. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the present invention;

[0020] Figure 2 Provided by this utility model Figure 1 Side sectional view;

[0021] Figure 3 Provided by this utility model Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 A schematic diagram of the wall and door frame provided for this utility model.

[0023] In the diagram: 1. Wall; 2. Door frame; 3. L-shaped mounting plate; 4. Door closer body; 41. Connecting rod; 42. Hinge seat; 5. Door leaf; 6. Threaded rod; 7. Support tube; 7. Mounting piece; 71. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] This utility model provides a reverse-installation structure for a fire door closer. Please refer to [link / reference]. Figure 1-4 The system includes a door frame 2 installed in wall 1, a door leaf 5 hinged to the door frame 2, and a door closer installed between the door leaf 5 and the door frame 2. The door closer is located indoors and includes a door closer body 4 bolted to the door leaf 5. The door closer body 4 is connected to a hinge seat 42 via a connecting rod 41. The hinge seat 42 is made of channel steel with its opening facing the door frame 2. The hinge seat 42 is mounted on an L-shaped telescopic plate, which is mounted on the door frame 2. By simply mounting the L-shaped telescopic plate on the door frame 2, the door closer can be reversed. Therefore, if it is necessary to modify the original upright door closer, only the door closer needs to be removed without modifying the door frame or wall, making the modification of the upright door closer convenient and cost-effective.

[0026] The L-shaped telescopic plate includes an L-shaped mounting plate 3, on which a threaded rod 6 is welded. The other end of the threaded rod 6 is threadedly connected to a support pipe 7. The support pipe 7 is used depending on the distance between the door frame and the wall of the fire door (i.e., the distance between the door frame and the wall). Figure 3 The depth of the threaded rod 6 inserted into the support tube 7 is adjusted to adjust the length of the L-shaped telescopic plate, so that the included angle of the connecting rod 41 is normal. The support tube 7 is installed on the door frame 2. Specifically, the end of the support tube 7 is welded with a mounting plate 71, which has a mounting hole. The mounting plate 71 is installed on the door frame 2 by bolts, and the hinge seat 42 is installed on the L-shaped mounting plate 3 by bolts.

[0027] In practical use, the door closer body 4 is installed from the inside onto the door leaf 5, and then the hinge seat 42 is installed onto the L-shaped mounting plate 3 using bolts. The mounting piece 71 is then fixed onto the door frame 2 using bolts, thus allowing the door closer to be installed in reverse.

[0028] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fire door closer reverse installation structure, comprising a door frame (2) installed in a wall (1), a door leaf (5) hinged to the door frame (2), and a door closer provided between the door leaf (5) and the door frame (2), characterized in that: The door closer is located indoors. The door closer includes a door closer body (4) that is bolted to the door leaf (5). The door closer body (4) is connected to a hinge seat (42) via a connecting rod (41). The hinge seat (42) is mounted on an L-shaped telescopic plate, which is mounted on the door frame (2).

2. The reverse-installation structure of a fire door closer according to claim 1, characterized in that, The L-shaped telescopic plate includes an L-shaped mounting plate (3), on which a threaded rod (6) is welded. The other end of the threaded rod (6) is threadedly connected to a support pipe (7), which is installed on the door frame (2).

3. The reverse-installation structure of a fire door closer according to claim 2, characterized in that, The hinge seat (42) is bolted to the L-shaped mounting plate (3).

4. A reverse-installation structure for a fire door closer according to claim 2 or 3, characterized in that, The end of the support tube (7) is welded with an mounting plate (71), which is mounted on the door frame (2) by bolts.

5. The reverse-installation structure of a fire door closer according to claim 4, characterized in that, The hinge seat (42) is made of channel steel, and the opening of the channel steel is set towards the door frame (2).

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