Fireproof door closer signal feedback module mounting structure capable of automatically positioning

Abstract

The utility model relates to a fireproof door closer signal feedback module installation structure capable of automatically positioning, which comprises a feedback support, an installation cavity is arranged at the top of the feedback support, a signal feedback switch assembly is arranged in the installation cavity, and a first through hole and a second through hole are arranged on a bottom plate of the installation cavity. The first through hole is used for the trigger end of the signal feedback switch assembly to extend downwards, an auxiliary positioning hook is installed at the second through hole and composed of a metal elastic piece, the metal elastic piece is provided with a hook head portion protruding downwards through the second through hole, and the door closer sliding block can touch the trigger end and the hook head portion at the same time when moving along the sliding groove. When the feedback support and the sliding groove are not locked and positioned, the sliding block drives the feedback support to synchronously move along the sliding groove through the hook head part, and after the feedback support and the sliding groove are locked and positioned at the door closing in-place position, when the sliding block moves along the sliding groove and passes through the feedback support, the hook head part is upwards pressed into the second through hole by the sliding block. The device has the advantages of being capable of achieving automatic positioning of the feedback support, high in installation efficiency and good in applicability.

Description

Technical Field

[0001] This utility model belongs to the technical field of building fire protection equipment, specifically relating to an installation structure for a signal feedback module of an automatically positioning fire door closer. Background Technology

[0002] Fire door closers are mainly used on fire doors in various public or commercial settings, and their components have high requirements for fire safety. Intelligent fire door closers have remote control opening and closing functions and signal feedback capabilities. The installation of intelligent fire door closers is relatively complicated, especially the installation of the signal feedback module. Installers need to repeatedly adjust the opening and closing position during installation to ensure signal feedback after the door is in position. Because the slider and feedback bracket need to work together, the positioning requirements are high, and it is usually not possible to guarantee that it will be adjusted to the correct position on the first try. Therefore, structures or tools to assist in installation and positioning are required. Utility Model Content

[0003] This utility model provides an installation structure for an automatically positioning fire door closer signal feedback module, aiming to overcome, to some extent, the aforementioned deficiencies in the prior art.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An installation structure for a fire door closer signal feedback module with automatic positioning, comprising a feedback bracket installed in the door closer slide groove, the top of the feedback bracket having an upward-opening mounting cavity, the mounting cavity containing a signal feedback switch assembly, the bottom plate of the mounting cavity having a first through hole and a second through hole, the first through hole allowing the trigger end of the signal feedback switch assembly to extend downward to below the bottom surface of the bottom plate, the second through hole having an auxiliary positioning hook installed thereon, the auxiliary positioning hook being formed by multiple bending of a long strip of metal spring, the metal spring having a hook head protruding downward through the second through hole, when the door closer slider moves along the slide groove, it can simultaneously touch the trigger end and the hook head, when the feedback bracket is not locked and positioned with the slide groove, the slider can drive the feedback bracket to move synchronously along the slide groove through the hook head, after the feedback bracket is locked and positioned with the slide groove at the closed position, when the slider moves along the slide groove past the feedback bracket, the hook head is pressed upward into the second through hole by the slider.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] Furthermore, the feedback bracket is also provided with a fixing part, and the fixing part has a locking screw hole that runs vertically through it. A locking bolt is threaded into the locking screw hole. When the locking bolt is tightened, the feedback bracket is locked and positioned with the slide groove. When the locking bolt is loosened, the feedback bracket can slide left and right in the slide groove.

[0007] Furthermore, one end of the metal spring is fixedly connected to the base plate of the feedback bracket by a fixing screw, and the other end is bent in the direction of the fixing screw after passing around a stop block. It is first bent to form a right-angled step surface and then to form a slope surface. The hook head includes the right-angled step surface and the slope surface.

[0008] Furthermore, the end of the metal spring that bends toward the fixing screw is the free end. When the right-angled step surface or slope surface of the hook head is subjected to a force exceeding a set value, the metal spring undergoes elastic deformation, and the free end swings up and down.

[0009] Furthermore, the metal spring is made of stainless steel or titanium alloy.

[0010] Furthermore, the signal feedback switch assembly includes a micro switch, and a fixing groove formed by multiple limiting posts and multiple elastic buckles is provided around the first through hole in the mounting cavity. After the micro switch is pressed into the fixing groove, it is fixed by the limiting posts and elastic buckles.

[0011] Furthermore, the micro switch is electrically connected to the main control circuit board located on the limiting bracket via a spiral wire.

[0012] Furthermore, the micro switch is electrically connected to one end of the spiral wire via a sub-control circuit board located in the mounting cavity, and the other end of the spiral wire is electrically connected to the main control circuit board located on the limiting bracket. The sub-control circuit board integrates a manual door closing button, and the base plate is provided with a button hole corresponding to the manual door closing button.

[0013] Furthermore, the first through hole and the second through hole are respectively located on the front and rear sides of the feedback bracket base plate.

[0014] Furthermore, the feedback bracket is made of rigid plastic.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] Equipped with an auxiliary positioning hook, when the feedback bracket is positioned in the sliding groove to close the door, the auxiliary positioning hook can be pushed and moved synchronously by the slider that slides along the sliding groove when the door is closed. During the synchronous movement, the slider has triggered the trigger end of the signal feedback switch component on the feedback bracket and the hook head of the auxiliary positioning hook. Because of the presence of the auxiliary positioning hook, the feedback bracket moves synchronously with the slider. Therefore, the position of the feedback bracket in the sliding groove when the door is closed is its precise fixed position. Then, simply tighten the positioning bolt to achieve automatic positioning and significantly improve installation efficiency.

[0017] Furthermore, when the door closer is installed on a sliding door, during the opening and closing process, the slider will slide under the feedback bracket that is already positioned and fixed in the groove. When the auxiliary positioning hook is subjected to greater pressure, it can retract into the second through hole to make way for the slider. That is, the installation structure provided by this utility model can automatically and accurately position the installation position of the feedback bracket without affecting the installation of the door closer on the sliding door. It is applicable to both sliding and pulling door surfaces and has good applicability. The auxiliary positioning hook, which is made of bent metal spring sheet, has good durability and its rebound force and shape are easy to adjust. Auxiliary positioning hooks with specific mechanical properties can be easily produced in the factory. Attached Figure Description

[0018] Figure 1 A cross-sectional view of the installation structure of the fire door closer signal feedback module that can be automatically positioned according to this utility model after being applied to the fire door closer;

[0019] Figure 2 for Figure 1 A magnified schematic diagram of the feedback support and its adjacent related structures in the structure shown.

[0020] Figure 3 This is an isometric view of the feedback bracket after a section has been cut off (the figure shows the slider that mates with the feedback bracket).

[0021] Figure 4 for Figure 1 The isometric view of the feedback bracket and its components in the signal feedback module mounting structure shown.

[0022] Figure 5 for Figure 4 The diagram shows the feedback bracket cut open along the center line extending laterally from the metal spring sheet.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Slide groove; 2. Feedback bracket; 3. Slider; 4. Spiral; 5. Limit bracket; 6. Second through hole; 7. Auxiliary positioning hook; 8. Locking bolt; 9. Stop; 10. Right-angle stepped surface; 11. Sloping surface; 12. Micro switch. Detailed Implementation

[0025] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0026] In the description of this utility model, if terms such as "upper", "lower", "left", "right", "top", "bottom", "inner", and "outer" are used to indicate the orientation or positional relationship, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] When installing an electric door closer, it can be installed on either a sliding or push-type door. When installed on a push-type door, the slider in the track will move beyond the feedback bracket during opening and closing. Therefore, to ensure the electric door closer can be installed on both push and pull-type doors, it must also be ensured that, after the feedback bracket is fixed in the track, the slider can move beyond the feedback bracket if necessary. In other words, for the above reasons, in existing electric door closers, after the feedback bracket is fixed in the track, the slider can pass over the feedback bracket when sliding in the track. The feedback bracket does not significantly obstruct the slider, and the two can slide freely relative to each other. This is one reason why it is difficult to quickly and accurately locate the installation position of the feedback bracket when positioning it after the door is closed.

[0028] like Figures 1 to 5 As shown, this utility model provides an installation structure for an automatically positioning fire door closer signal feedback module, which includes a feedback bracket 2 installed in the closer slide groove 1. The top of the feedback bracket 2 has an upward-opening mounting cavity, in which a signal feedback switch assembly is installed. The bottom plate of the mounting cavity has a first through hole and a second through hole 6. The first through hole allows the trigger end of the signal feedback switch assembly to extend downward to below the bottom surface of the bottom plate. An auxiliary positioning hook 7 is installed at the second through hole 6. The auxiliary positioning hook 7 is formed by a long strip of metal spring that has been repeatedly... After bending, the metal spring has a hook head protruding downward through the second through hole 6. When the door closer slider 3 moves along the slide groove 1, it can simultaneously touch the trigger end and the hook head. When the feedback bracket 2 is not locked and positioned with the slide groove 1, when the door is closed, the slider 3 drives the feedback bracket 2 to move synchronously along the slide groove 1 through the hook head. After the feedback bracket 2 is locked and positioned with the slide groove 1 at the closed position, when the slider 3 moves along the slide groove 1 and passes the feedback bracket 2, the hook head is pressed upward into the second through hole 6 by the slider 3.

[0029] It should be noted that during the closing process, due to the presence of the auxiliary positioning hook, the slider will drive the feedback bracket to move synchronously to the closed position, achieving precise positioning. When the slider contacts the auxiliary positioning hook, the trigger end of the signal feedback switch component is also triggered. Therefore, when the door is closed, simply tightening the locking bolt is sufficient to fix the feedback bracket in the slide groove. When the door closer is installed on the push door surface, the slider will move back and forth to the front and rear positions of the feedback bracket during the closing process. Therefore, in order to ensure its application on the push door surface and not affect the slider's movement through the feedback bracket, the auxiliary positioning hook needs to deform towards the second through hole under significant pressure so that the slider can successfully pass under the feedback bracket. This ensures that the auxiliary positioning hook can accurately assist in positioning without affecting the installation on the push door surface, maintaining good applicability.

[0030] A fire door closer typically includes a fire door linkage track (referred to as the track), an opening and closing actuator, and a hydraulic device. During installation, the track is mounted on the fire door frame, and the hydraulic device is mounted on the fire door leaf. The hydraulic device and the slider on the track are connected via the opening and closing actuator. In on-site installation, the fire door closer is sometimes mounted on the push door surface and sometimes on the pull door surface, which are the front and back sides of the door, respectively. When mounted on the push door surface, the slider will move beyond the feedback bracket during opening and closing and then return to its original position. When mounted on the pull door surface, it will not move beyond the feedback bracket.

[0031] In one embodiment of this utility model, the feedback bracket 2 is further provided with a fixing part, and the fixing part is provided with a locking screw hole that runs vertically through the top and bottom. A locking bolt 8 is threaded into the locking screw hole. When the locking bolt 8 is tightened, the feedback bracket 2 is locked and positioned with the slide groove 1. When the locking bolt 8 is loosened, the feedback bracket 2 can slide left and right in the slide groove 1.

[0032] In one embodiment of this utility model, such as Figure 3 and Figure 5 As shown, one end of the metal spring is fixedly connected to the base plate of the feedback bracket 2 by a fixing screw (preferably two fixing screws spaced apart and side by side), and the other end is bent in the direction of the fixing screw after passing around a stop block 9. It is first bent to form a right-angled step surface 10 and then to form a slope surface 11. The hook head includes the right-angled step surface 10 and the slope surface 11.

[0033] It should be noted that when the right-angled stepped surface is acted upon by the slider, a relatively large force is required to press the hook head of the metal spring into the second through hole. If the feedback bracket is not fixed within the slide groove, the hook head of the metal spring will not be pressed into the second through hole; instead, the slider will push the feedback bracket to move synchronously to the closed position, achieving automatic positioning. Conversely, when the slider approaches the hook head from another direction and first contacts the ramp surface, due to the ramp surface design, a relatively small force is required to press the hook head into the second through hole.

[0034] In one embodiment of this utility model, the end of the metal spring sheet bent toward the fixing screw is the free end. When the right-angled step surface 10 or the ramp surface 11 of the hook head is subjected to a force exceeding a set value, the metal spring sheet undergoes elastic deformation, and the free end swings up and down.

[0035] In one embodiment of this utility model, the metal spring is made of stainless steel or titanium alloy.

[0036] In one embodiment of the present invention, the signal feedback switch assembly includes a micro switch 12. The mounting cavity is provided with a fixing groove surrounded by multiple limiting posts and multiple elastic buckles around the first through hole. After the micro switch 12 is pressed into the fixing groove, it is fixed by the limiting posts and elastic buckles.

[0037] In one embodiment of this utility model, the micro switch 12 is electrically connected to the main control circuit board disposed on the limiting bracket 5 via the spiral wire 4.

[0038] In one embodiment of this utility model, the micro switch 12 is electrically connected to one end of the spiral 4 via a sub-control circuit board disposed in the mounting cavity, and the other end of the spiral 4 is electrically connected to the main control circuit board disposed on the limiting bracket 5. The sub-control circuit board integrates a manual door closing button, and the base plate is provided with a button hole corresponding to the manual door closing button.

[0039] In one embodiment of the present invention, the first through hole and the second through hole 6 are respectively provided on the front and rear sides of the bottom plate of the feedback bracket 2.

[0040] It should be noted that, as Figure 3 As shown, the slider has protrusions on its front and rear sides to interact with the micro switch trigger ends and auxiliary positioning hooks at the first and second through holes.

[0041] In one embodiment of this utility model, the feedback bracket 2 is made of rigid plastic.

[0042] In the above embodiments, when the door closer slider pushes the feedback bracket in the closing direction, it needs to overcome the tension and friction of the spiral; conversely, it only needs to overcome the friction. From these characteristics, it can be seen that F1 > F2. Figure 2 As shown, the feedback bracket is pushed by the slider to move towards the closed position. The feedback bracket is designed with a guide hook (auxiliary positioning hook), which uses a cantilever beam structure and can deform vertically. One end is fixed with two screws, while the other end is bent and not fixed, remaining free. When the feedback bracket is fixed in the groove, the slider needs to overcome a certain force when passing the hook, causing the hook to elastically deform and retract into the second through hole, creating a clearance effect. The slider can move on the feedback bracket without affecting the opening and closing of the door. During the production process of the electric door closer, the slider is installed from the closing direction to the opening direction (i.e., from left to right in step 5). Due to the structural characteristics of the hook (a ramp is provided on this side), the slider can pass relatively easily. The hook, made of metal spring sheet, is fixed to the end of the base plate at one end by two hook screws, forming a cantilever structure. When subjected to force, it swings up and down. Because a stop is designed on the main body of the feedback bracket, the swing in one direction is restricted, preventing the hook from moving in an unfavorable direction when subjected to force (an unfavorable direction would damage the metal hook and cause it to jam).

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An installation structure for an automatically positioning fire door closer signal feedback module, characterized in that, The system includes a feedback bracket (2) installed in a door closer slide groove (1). The top of the feedback bracket (2) has an upward-opening mounting cavity. A signal feedback switch assembly is installed in the mounting cavity. A first through hole and a second through hole (6) are provided on the bottom plate of the mounting cavity. The first through hole allows the trigger end of the signal feedback switch assembly to extend downward to below the bottom surface of the bottom plate. An auxiliary positioning hook (7) is installed at the second through hole (6). The auxiliary positioning hook (7) is formed by bending a long strip of metal spring multiple times. The metal spring has a passage through the second through hole (6). When the door closer slider (3) moves along the slide groove (1), it can simultaneously touch the trigger end and the hook head. When the feedback bracket (2) is not locked and positioned with the slide groove (1), the slider (3) can drive the feedback bracket (2) to move synchronously along the slide groove (1) through the hook head. After the feedback bracket (2) is locked and positioned with the slide groove (1) at the door closing position, when the slider (3) moves along the slide groove (1) and passes through the feedback bracket (2), the hook head is pressed upward into the second through hole (6) by the slider (3).

2. The installation structure of the signal feedback module for an automatically positioning fire door closer according to claim 1, characterized in that, The feedback bracket (2) is also provided with a fixing part, and the fixing part is provided with a locking screw hole that runs vertically through the top and bottom. The locking screw hole is threaded with a locking bolt (8). When the locking bolt (8) is tightened, the feedback bracket (2) is locked and positioned with the slide groove (1). When the locking bolt (8) is loosened, the feedback bracket (2) can slide left and right in the slide groove (1).

3. The installation structure of the signal feedback module for an automatically positioning fire door closer according to claim 1, characterized in that, One end of the metal spring is fixedly connected to the base plate of the feedback bracket (2) by a fixing screw, and the other end is bent in the direction of the fixing screw after passing around a stop block (9). It is first bent to form a right-angled step surface (10) and then a slope surface (11). The hook head includes the right-angled step surface (10) and the slope surface (11).

4. The installation structure of the signal feedback module for an automatically positioning fire door closer according to claim 3, characterized in that, The end of the metal spring that is bent toward the fixing screw is the free end. When the right-angled step surface (10) or slope surface (11) of the hook head is subjected to a force exceeding the set value, the metal spring undergoes elastic deformation, and the free end swings up and down.

5. The installation structure of the signal feedback module for an automatically positioning fire door closer according to claim 1, characterized in that, The metal spring is made of stainless steel or titanium alloy.

6. The installation structure of the signal feedback module for an automatically positioning fire door closer according to claim 1, characterized in that, The signal feedback switch assembly includes a micro switch (12). The mounting cavity is provided with a fixing groove surrounded by multiple limiting posts and multiple elastic buckles around the first through hole. After the micro switch (12) is pressed into the fixing groove, it is fixed by the limiting posts and elastic buckles.

7. The installation structure of the signal feedback module for an automatically positioning fire door closer according to claim 6, characterized in that, The micro switch (12) is electrically connected to the main control circuit board located on the limiting bracket (5) via a spiral (4).

8. The installation structure of the signal feedback module for an automatically positioning fire door closer according to claim 6, characterized in that, The micro switch (12) is electrically connected to one end of the spiral (4) through a sub-control circuit board located in the mounting cavity. The other end of the spiral (4) is electrically connected to the main control circuit board located on the limiting bracket (5). The sub-control circuit board integrates a manual door closing button, and the base plate is provided with a button hole corresponding to the manual door closing button.

9. The installation structure of the signal feedback module for an automatically positioning fire door closer according to any one of claims 1 to 8, characterized in that, The first through hole and the second through hole (6) are respectively located on the front and rear sides of the bottom plate of the feedback bracket (2).

10. The installation structure of the signal feedback module for an automatically positioning fire door closer according to claim 9, characterized in that, The feedback bracket (2) is made of rigid plastic.

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