Steel fireproof door push rod lock support with magnetic lock
By designing a push rod lock bracket for steel fire doors with magnetic locks, and using limiting and fixing devices to adjust the position of the lock rod, the problem of collision between the push rod lock and the magnetic lock during installation was solved, ensuring the stable installation of the fire door.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JUNTONG DOOR CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-17
AI Technical Summary
During the installation of existing fire doors, the push-bar lock and magnetic lock are prone to collision, affecting installation efficiency and stability.
A steel fire door push rod lock bracket with magnetic lock was designed. Through the cooperation of limit device, fixing device, mounting plate and slot, the position of lock rod is adjusted to ensure that the push rod lock and magnetic lock do not collide during installation.
This allows for the normal use of push-rod locks and magnetic locks during installation, avoiding collisions and improving installation efficiency and stability.
Smart Images

Figure CN224134394U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire door installation, and more specifically, to a steel fire door push rod lock bracket with magnetic lock. Background Technology
[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity, and heat insulation for a certain period of time. They play a vital role in buildings, mainly to prevent the spread of fire, protect people's lives, and reduce property damage.
[0003] Existing fire doors use both magnetic locks and push-bar locks during installation to provide stable locking force and prevent external forces from damaging the fire door. However, during installation, the push-bar lock and magnetic lock may collide, affecting the actual installation on site.
[0004] Therefore, it is necessary to redesign the magnetic lock bracket for the steel fire door push rod to address the above issues. Utility Model Content
[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a steel fire door push rod lock bracket with magnetic lock.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A magnetic lock steel fire door push rod lock bracket includes a door frame, a door body rotatably connected to the inner wall of the door frame, a push rod lock on the door body, a locking rod on the push rod lock, and an installation plate fixedly installed on the inner bottom wall of the door frame. Two symmetrically arranged moving grooves are formed within the installation plate, and two symmetrically arranged sliding grooves are formed on one side of the installation plate, with each sliding groove communicating with a corresponding moving groove. A limiting device is provided between the two moving grooves, and the locking rod is connected to the output end of the limiting device. Two fixing devices are provided on the output end of the limiting device, and the output ends of the two fixing devices pass through the output ends of the corresponding limiting devices and connect to the inner wall of the moving groove.
[0008] like Figure 1-4 As shown, the specific implementation method is as follows: by setting up a limiting device, a fixing device, a mounting plate, a slot, etc., the limiting device can be fixed in the slot corresponding to the position by the cooperation of the fixing device and the slot. By sliding the fixing plate of the limiting device, the position of the limiting hole can be adjusted, thereby realizing the downward adjustment of the position of the locking rod in the limiting hole, ensuring that the push rod lock and the magnetic lock can be used normally during installation.
[0009] In a preferred embodiment, the limiting device includes two sliders, which are respectively slidably locked in corresponding moving slots. One side of the two sliders is fixedly connected to a fixing plate, and the output ends of the two fixing devices are respectively fixedly connected to the fixing plate. A limiting hole is opened on the lower end face of the fixing plate, and one end of the locking rod is inserted into the limiting hole.
[0010] In a preferred embodiment, a baffle is fixedly installed on the lower end face of the fixing plate.
[0011] In a preferred embodiment, each of the fixing devices includes a spring, and the spring is fixedly connected to one side of the fixing plate. The end of the spring away from the fixing plate is fixedly connected to a fixing block. A limit rod is fixedly installed on one side of the fixing block. The end of the limit rod away from the fixing block passes through the fixing plate and the slider and extends into the moving groove.
[0012] In a preferred embodiment, each of the movable slots has multiple slots equidistantly spaced on its inner sidewall, and the limiting rod is inserted into the corresponding slot.
[0013] In a preferred embodiment, the length and width of each of the chutes are smaller than the length and width of the moving chute.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] This utility model incorporates a limiting device, a fixing device, a mounting plate, and a slot. The fixing device and the slot work together to fix the limiting device in the corresponding slot. By sliding the fixing plate of the limiting device, the position of the limiting hole can be adjusted, thereby lowering the position of the locking rod engaged in the limiting hole, ensuring that the push rod lock and magnetic lock can be used normally during installation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the steel fire door push rod lock bracket with magnetic lock proposed in this utility model;
[0017] Figure 2 This is a schematic diagram of the door frame portion of the steel fire door push rod lock bracket with magnetic lock proposed in this utility model.
[0018] Figure 3 This is a schematic diagram of the limiting device of the push rod lock bracket for a steel fire door with a magnetic lock proposed in this utility model;
[0019] Figure 4 This is a schematic diagram of the fixing device of the push rod lock bracket for a steel fire door with a magnetic lock proposed in this utility model.
[0020] In the diagram: 1. Door frame, 2. Door body, 3. Push rod lock, 4. Locking rod, 5. Mounting plate, 6. Fixing plate, 7. Limiting plate, 8. Limiting hole, 9. Baffle, 10. Spring, 11. Fixing block, 12. Limiting rod, 13. Slide groove, 14. Slider, 15. Moving groove, 16. Card slot. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Reference Figure 1-4 A magnetic lock steel fire door push rod lock bracket includes a door frame 1, a door body 2 rotatably connected to the inner wall of the door frame 1, a push rod lock 3 on the door body 2, a locking rod 4 on the push rod lock 3, an installation plate 5 fixedly installed on the inner bottom wall of the door frame 1, two symmetrically opened moving grooves 15 in the installation plate 5, two symmetrically opened sliding grooves 13 on one side of the installation plate 5, and the two sliding grooves 13 are respectively connected to the moving grooves 15 in corresponding positions, a limiting device is provided between the two moving grooves 15, and the locking rod 4 is connected to the output end of the limiting device, and two fixing devices are provided on the output end of the limiting device, and the output ends of the two fixing devices respectively pass through the output end of the corresponding limiting device and are connected to the inner wall of the moving groove 15.
[0023] like Figure 1-4 As shown, the specific implementation method is as follows: by setting up a limiting device, a fixing device, a mounting plate 5, a slot 16, etc., the limiting device can be fixed in the slot 16 corresponding to the position by the cooperation of the fixing device and the slot 16. By sliding the fixing plate 6 of the limiting device, the position of the limiting hole 8 can be adjusted, thereby realizing the downward adjustment of the position of the locking rod 4 engaged in the limiting hole 8, ensuring that the push rod lock 3 and the magnetic lock can be used normally during installation.
[0024] The limiting device includes two sliders 14, which are respectively slidably locked in corresponding moving grooves 15. A fixing plate 6 is fixedly connected to one side of both sliders 14, and the output ends of the two fixing devices are respectively fixedly connected to the fixing plate 6. A limiting hole 8 is opened on the lower end face of the fixing plate 6, and one end of the locking rod 4 is inserted into the limiting hole 8. By sliding the fixing plate 6, the slider 14 can be moved in the moving groove 15, thereby lowering the position of the fixing plate 6 and the limiting hole 8, adjusting the position of the locking rod 4 and the limiting hole 8, and thus preventing the locking rod 4 from being locked by the magnetic force.
[0025] A baffle 9 is fixedly installed on the lower end face of the fixing plate 6. The baffle 9 can prevent the locking rod 4 from rotating excessively with the door body 2.
[0026] Each fixing device includes a spring 10, which is fixedly connected to one side of the fixing plate 6. The end of the spring 10 away from the fixing plate 6 is fixedly connected to a fixing block 11. A limiting rod 12 is fixedly installed on one side of the fixing block 11. The end of the limiting rod 12 away from the fixing block 11 passes through the fixing plate 6 and the slider 14 and extends into the moving groove 15. Multiple slots 16 are equally spaced on the inner side wall of each moving groove 15. The limiting rod 12 is inserted into the corresponding slot 16. The spring 10 can ensure that the limiting rod 12 can always be inserted into the corresponding slot 16.
[0027] The length and width of each slide groove 13 are smaller than the length and width of the moving groove 15. It should be noted that this design prevents the slider 14 from disengaging from the moving groove 15.
[0028] When using this utility model, during the installation of the door body 2, the mounting plate 5 can first be fixedly installed on the inner top wall of the door frame 1 according to the position of the magnetic lock. Then, the two fixing blocks 11 can be pulled. At this time, the two fixing blocks 11 will simultaneously stretch the two springs 10 and drive the limiting rod 12 to disengage from the slot 16. Then, the fixing plate 6 can be slid, and the fixing plate 6 can drive the slider 14 to move synchronously. Then, the slider 14 can be slid to the position to be adjusted, that is, the position of the fixing plate 6 can be adjusted. Then, the pulling of the fixing blocks 11 can be stopped. At this time, the springs 10 will return to their original position. The return of the springs 10 can drive the fixing blocks 11 and the limiting rod 12 to move synchronously. Then, the limiting rod 12 will be re-inserted into the slot 16 after the adjustment position. At this time, the position adjustment of the fixing plate 6 can be completed. At this time, the push rod lock 3 can be opened and the door body 2 can be pushed. The lock rod 4 will not collide with the magnetic lock.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A steel fire door push rod lock bracket with magnetic lock, including a door frame (1), characterized in that: The inner wall of the door frame (1) is rotatably connected to the door body (2). The door body (2) is provided with a push rod lock (3). The push rod lock (3) is provided with a locking rod (4). The inner bottom wall of the door frame (1) is fixedly installed with an installation plate (5). Two moving grooves (15) are symmetrically opened in the installation plate (5). Two sliding grooves (13) are symmetrically opened on one side of the installation plate (5). The two sliding grooves (13) are respectively connected to the moving grooves (15) with corresponding positions. A limiting device is provided between the two moving grooves (15). The locking rod (4) is connected to the output end of the limiting device. Two fixing devices are provided on the output end of the limiting device. The output ends of the two fixing devices pass through the output ends of the limiting devices with corresponding positions and are connected to the inner wall of the moving groove (15).
2. The steel fire door push bar lock bracket with magnetic force lock according to claim 1, characterized in that: The limiting device includes two sliders (14), and the two sliders (14) are respectively slidably locked in the corresponding moving grooves (15). One side of the two sliders (14) is fixedly connected to a fixing plate (6), and the output ends of the two fixing devices are respectively fixedly connected to the fixing plate (6). The lower end face of the fixing plate (6) is provided with a limiting hole (8), and one end of the locking rod (4) is inserted into the limiting hole (8).
3. The steel fire door push bar lock bracket with magnetic force lock according to claim 2, characterized in that: A baffle (9) is fixedly installed on the lower end face of the fixing plate (6).
4. The steel fire door push bar lock bracket with magnetic latch of claim 2, wherein: Each of the fixing devices includes a spring (10), and the spring (10) is fixedly connected to one side of the fixing plate (6). The end of the spring (10) away from the fixing plate (6) is fixedly connected to a fixing block (11). A limit rod (12) is fixedly installed on one side of the fixing block (11). The end of the limit rod (12) away from the fixing block (11) passes through the fixing plate (6) and the slider (14) and extends into the moving groove (15).
5. The steel fire door push bar lock bracket with magnetic force lock according to claim 4, characterized in that: Each of the moving slots (15) has multiple slots (16) evenly spaced on its inner sidewall, and the limiting rod (12) is inserted into the corresponding slot (16).
6. The steel fire rated door push bar lock bracket with magnetic lock of claim 1, wherein: The length and width of each of the grooves (13) are smaller than the length and width of the moving groove (15).