Connecting rod type door closer for monitoring opening and closing states of door body of fireproof door

Abstract

The connecting rod type door closer used for monitoring the opening and closing state of the door body of the fireproof door comprises a main body, a hydraulic press, a first connecting rod and a second connecting rod, and the main body comprises a shell, a main control board, a door opening in-place detection mechanism, a door closing in-place detection mechanism, a positioning and releasing mechanism and a bottom plate. The door opening in-place detection mechanism detects that a door body of the fireproof door is opened in place and sends a signal to the main control board, the main control board sends the signal to the monitoring center, when the fireproof door is closed in place, the door closing in-place detection mechanism detects that the door body of the fireproof door is closed in place and sends the signal to the main control board, and the main control board sends the signal to the monitoring center. In this way, the opening and closing state of the door body of the fireproof door can be accurately monitored, potential safety hazards are avoided, and the fireproof door is easy to install, low in debugging difficulty and suitable for various installation scenes through a small machine body.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of indoor fire-fighting equipment, especially relates to a connecting rod type door closer for monitoring the opening and closing state of a fireproof door. BACKGROUND

[0002] The fireproof door is composed of a fixedly arranged door frame and a door body rotatably connected with the door frame, and the fireproof door closer is installed on the door frame and the door body of the fireproof door and used for opening or closing the door body of the fireproof door. The existing connecting rod type door closer usually cannot effectively monitor the opening and closing state of the door body of the fireproof door, is not conducive to the centralized management of the fireproof door by the monitoring center, and has a fire-fighting hidden danger. The existing door closer that can be used for monitoring the opening and closing state of the door body of the fireproof door usually adopts a sliding groove structure. For example, a door closer for monitoring the opening state of a fireproof door disclosed in No. CN204326805U is used for judging the opening and closing state of the door body of the fireproof door by monitoring the position of a sliding block. When the door closer is installed, the relative positions of a magnetron and the sliding block need to be accurately adjusted to ensure that the magnetron and the sliding block can be in an effective magnetic induction distance when the door body of the fireproof door is opened to the position, otherwise, the opening state of the door body of the fireproof door monitored by the door closer will not match the actual situation. Therefore, the installation and debugging of the door closer are extremely troublesome, and the sliding groove structure of the door closer leads to an excessively long and large machine body, which has many installation limitations in actual installation and has the problem of installation difficulty in a relatively narrow space. SUMMARY

[0003] The utility model aims at overcoming the defects of the prior art, providing a connecting rod type door closer for monitoring the opening and closing state of a door body of a fireproof door, which is simple to install, low in debugging difficulty, can effectively monitor the opening and closing state of the door body of the fireproof door, avoids the occurrence of a safety hidden danger, and can be applied to various installation scenes by virtue of a small and exquisite machine body.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the embodiment of the present application is as follows: a connecting rod type door closer for monitoring the opening and closing state of a door body of a fireproof door, comprising a main body, a hydraulic device, a first connecting rod and a second connecting rod.

[0005] The main body comprises an outer shell, a main control board, an opening-to-position detection mechanism, a closing-to-position detection mechanism, a positioning and releasing mechanism and a bottom plate.

[0006] The outer shell and the bottom plate are detachably connected, the main control board, the opening-to-position detection mechanism, the closing-to-position detection mechanism and the positioning and releasing mechanism are fixedly arranged on the bottom plate, the main control board is electrically connected with a monitoring center, and the main control board is electrically connected with the opening-to-position detection mechanism, the closing-to-position detection mechanism and the positioning and releasing mechanism respectively.

[0007] One end of the first connecting rod is rotatably connected with the bottom plate, the other end of the first connecting rod is rotatably connected with one end of the second connecting rod, and the end of the second connecting rod away from the first connecting rod is rotatably connected with the hydraulic device;

[0008] The hydraulic device is fixed on the door body of the fireproof door, when the door body of the fireproof door is opened, the hydraulic device drives the second connecting rod to rotate, the second connecting rod drives the first connecting rod to rotate, when the fireproof door is opened to the position, the first connecting rod and the bottom edge of the bottom plate or the extension line of the bottom edge form an included angle a, the positioning and releasing mechanism locks the first connecting rod, the door opening to the position detection mechanism detects that the door body of the fireproof door is opened to the position by detecting the position of the first connecting rod and sends a signal to the main control board, and the main control board transmits the signal to the monitoring center;

[0009] When it is needed to close the door body of the fireproof door, the monitoring center sends a door closing signal to the main control board, the main control board drives the positioning and releasing mechanism to release the locking of the first connecting rod, or directly applies a door closing direction force to the door body of the fireproof door, when the door closing direction force reaches a predetermined value, the first connecting rod is unlocked from the positioning and releasing mechanism;

[0010] The main body is fixed on or near the door frame, when the door body of the fireproof door is closed to the position, the door closing to the position detection mechanism detects that the door body of the fireproof door is closed to the position and sends a signal to the main control board, and the main control board transmits the signal to the monitoring center.

[0011] Specifically, the door opening to the position detection mechanism is a first micro switch, the first micro switch is provided with a first elastic sheet, the first elastic sheet is arranged towards the first connecting rod, when the first connecting rod and the bottom edge of the bottom plate form an included angle a, it represents that the door is opened to the position, the first connecting rod is pressed on the first elastic sheet, at this time, the first micro switch changes from the off state to the on state or from the on state to the off state, the main control board receives the state change signal of the first micro switch and transmits the state change signal to the monitoring center.

[0012] Specifically, the bottom plate is provided with a mounting column, the door closing to position detection mechanism comprises a second micro switch, a torsional spring and a flap, the second micro switch is provided with a second elastic sheet, the torsional spring is sleeved on the mounting column, the flap is provided with a mounting hole in the middle part, the torsional spring is fixed in the mounting hole, two ends of the flap are a first end and a second end respectively, the second micro switch is fixed on the bottom plate and is arranged close to the first end, when the door body of the fireproof door is not closed to position, the first end is pressed on the second elastic sheet under the action of the torsional force of the torsional spring, the second micro switch is always in the on or off state, when the door body of the fireproof door is closed to position, the door body of the fireproof door presses the second end, the first end is raised away from the second elastic sheet, the second micro switch changes from the on state to the off state or from the off state to the on state, and the main control board receives the state change signal of the second micro switch and transmits the state change signal to the monitoring center.

[0013] Preferably, the door opening to position detection mechanism can also be a pressure sensor, an angular displacement sensor, a photoelectric sensor or a magnetic induction sensor.

[0014] Preferably, the door closing to position detection mechanism can also only comprise a micro switch, a pressure sensor, an angular displacement sensor, a photoelectric sensor or a magnetic induction sensor.

[0015] Preferably, the positioning and releasing mechanism is an electromagnetic locking mechanism, a mechanical buckle or a mechanical lock tongue mechanism.

[0016] Specifically, the first connecting rod and / or the second connecting rod is a telescopic connecting rod with adjustable length, and a locking structure is arranged between the first connecting rod and the second connecting rod, and the locking structure is a slide rod locking structure or a gear locking structure.

[0017] Specifically, when the door body of the fireproof door is opened to position, the included angle a formed by the first connecting rod and the bottom edge of the bottom plate is 60-150°.

[0018] The door opening to position detection mechanism directly detects the position of the first connecting rod, so that whether the door body of the fireproof door is opened to position can be directly and accurately judged, the door closing to position detection mechanism directly detects the position of the door body of the fireproof door, so that whether the door body of the fireproof door is closed to position can be directly and accurately judged, and the position of the door body of the fireproof door does not need to be judged through other additional components, the opening and closing state of the fireproof door can be directly and reliably monitored, the probability of monitoring error is reduced, potential safety hazards are avoided, the installation and debugging difficulty is reduced, and the compact body of the utility model can also reduce the installation difficulty and is suitable for various installation scenes. BRIEF DESCRIPTION OF DRAWINGS

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram showing the assembly of the main body, hydraulic unit, first link, and second link of the linkage-type door closer for monitoring the opening and closing status of fire doors, as provided in this embodiment of the utility model.

[0021] Figure 2 This is a structural diagram of the main body of the linkage-type door closer for monitoring the opening and closing status of fire doors provided in this embodiment of the utility model.

[0022] Figure 3 This is a bottom view of the linkage-type door closer for monitoring the opening and closing status of a fire door, as provided in this embodiment of the utility model, installed on a fire door (the fire door is in the open position).

[0023] Figure 4 This is a bottom view of the linkage-type door closer for monitoring the opening and closing status of a fire door, as provided in this embodiment of the utility model, installed on a fire door (the fire door is in the process of opening).

[0024] Figure 5 This is a bottom view of the linkage-type door closer for monitoring the opening and closing status of a fire door, as provided in this embodiment of the utility model, installed on a fire door (the fire door is in the closed position).

[0025] Figure 6 This is a schematic diagram of another angle of the linkage-type door closer for monitoring the opening and closing status of a fire door provided in this embodiment of the utility model (the fire door is in the process of opening). Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] like Figures 1-2 As shown in the figure, an embodiment of the present invention provides a linkage-type door closer for monitoring the opening and closing status of a fire door, comprising a main body 1, a hydraulic unit 2, a first linkage 3, and a second linkage 4.

[0028] The main body 1 includes an outer shell 11, a main control board 12, a door opening detection mechanism 13, a door closing detection mechanism 14, a positioning and release mechanism 15, and a base plate 16;

[0029] The outer shell 11 is detachably connected to the base plate 16. The main control board 12, the door opening detection mechanism 13, the door closing detection mechanism 14, and the positioning and release mechanism 15 are all fixed on the base plate 16. The main control board 12 is electrically connected to the monitoring center. The main control board 12 is also electrically connected to the door opening detection mechanism 13, the door closing detection mechanism 14, and the positioning and release mechanism 15, respectively.

[0030] One end of the first connecting rod 3 is rotatably connected to the base plate 16, the other end of the first connecting rod 3 is rotatably connected to one end of the second connecting rod 4, and the end of the second connecting rod 4 away from the first connecting rod 3 is rotatably connected to the hydraulic device 2.

[0031] The hydraulic actuator 2 is fixed to the fire door. When the fire door is opened, the hydraulic actuator 2 drives the second connecting rod 4 to rotate, and the second connecting rod 4 drives the first connecting rod 3 to rotate. When the fire door is fully opened, the first connecting rod 3 forms an angle α with the bottom edge or the extension line of the bottom edge of the base plate 16. The positioning and release mechanism 15 locks the first connecting rod 3. The door opening detection mechanism 13 detects that the fire door is fully opened by detecting the position of the first connecting rod and sends the signal to the main control board 12. The main control board 12 then transmits the signal to the monitoring center.

[0032] When the fire door needs to be closed, the monitoring center sends a closing signal to the main control board 12. The main control board 12 drives the positioning and release mechanism 15 to release the lock on the first link 3, or directly applies a closing force to the fire door. When the closing force reaches a predetermined value, the first link 3 is unlocked from the positioning and release mechanism 15.

[0033] The main body 1 is fixed on or near the door frame. When the fire door is closed in place, the closing detection mechanism 14 detects that the fire door is closed in place and sends a signal to the main control board 12. The main control board 12 then transmits the signal to the monitoring center.

[0034] This invention directly detects the position of the first connecting rod 3 through the door opening detection mechanism 13, which can directly and accurately determine whether the fire door is fully open. Similarly, it directly detects the position of the fire door through the door closing detection mechanism 14, which can directly and accurately determine whether the fire door is fully closed. This design eliminates the need for additional components to determine the position of the fire door, allowing for direct and reliable monitoring of the door's opening and closing status. This reduces the probability of detection errors, avoids safety hazards, and simplifies installation and debugging. Furthermore, the compact design of this invention reduces installation difficulty and makes it suitable for various installation scenarios.

[0035] Specifically, refer to Figure 2The door opening detection mechanism 13 is a first micro switch 131. The first micro switch 131 is equipped with a first spring 1311. The first spring 1311 is set towards the first connecting rod 3. When the first connecting rod 3 forms an angle α with the bottom edge of the base plate 16, it means that the door is open. The first connecting rod 3 presses on the first spring 1311, and the first micro switch 131 changes from the off state to the on state or from the on state to the off state. The main control board 12 receives the state change signal of the first micro switch 131 and transmits the state change signal to the monitoring center. With this setting, the monitoring center can directly detect the position of the first connecting rod 3 through the door opening detection mechanism 13 to determine whether the fire door is open. This is very accurate and effective.

[0036] Specifically, refer to Figures 1-2 The base plate 16 is provided with a mounting post (not shown). The door closing detection mechanism 14 includes a second micro switch 141, a torsion spring 14, and a rocker 143. The second micro switch 141 is provided with a second spring 1411. The torsion spring 142 is sleeved on the mounting post (not shown). The rocker 143 has a mounting hole 1433 in the middle, and the torsion spring 142 is fixed in the mounting hole 1433. The two ends of the rocker 143 are the first end 1431 and the second end 1432, respectively. The second micro switch 141 is fixed on the base plate 16 and is located near the first end 1431. When the fire door is not closed to the correct position, the first end 1431 is pressed against the second spring 1411 under the torsional force of the torsion spring 142. The second micro switch 141 is always closed. When the fire door is closed, it is in either a conducting or disconnected state. When the fire door is closed to the correct position, the fire door presses against the second end 1432, and the first end 1431 is lifted away from the second spring 1411. The second micro switch 141 changes from a conducting state to a disconnected state or vice versa. The main control board 12 receives the state change signal of the second micro switch 141 and transmits the state change signal to the monitoring center. Through the combination of the second micro switch 141, the torsion spring 14, and the rocker 143, the fire door can more easily contact the closing position detection mechanism 14 when it is closed to the correct position and trigger the closing position detection mechanism 14 to output a signal. In this way, the monitoring center can more accurately and effectively detect whether the fire door is closed to the correct position.

[0037] Preferably, the door opening detection mechanism 13 can also be a pressure sensor, an angular displacement sensor, a photoelectric sensor, or a magnetic induction sensor.

[0038] Preferably, the door closing detection mechanism 14 may also include only a micro switch, a pressure sensor, an angular displacement sensor, a photoelectric sensor, or a magnetic induction sensor.

[0039] Preferably, the positioning and release mechanism 15 is an electromagnetic locking mechanism, a mechanical latch, or a mechanical locking tongue mechanism.

[0040] Specifically, the first link 3 and / or the second link 4 is an adjustable telescopic link, and a locking structure is provided between the first link 3 and the second link 4. The locking structure is a sliding rod locking structure or a gear locking structure, which facilitates adjusting the opening angle of the fire door as needed.

[0041] Specifically, when the fire door is fully open, the angle α formed by the first connecting rod 3 and the bottom edge or the extension line of the bottom edge of the base plate 16 is 60-150°, which makes it easier to accurately monitor the opening position of the fire door.

[0042] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A linkage-type door closer for monitoring the opening and closing status of fire doors, characterized in that: It includes the main body (1), the hydraulic unit (2), the first connecting rod (3), and the second connecting rod (4); The main body (1) includes a shell (11), a main control board (12), a door opening detection mechanism (13), a door closing detection mechanism (14), a positioning and release mechanism (15), and a base plate (16). The outer shell (11) is detachably connected to the base plate (16). The main control board (12), the door opening detection mechanism (13), the door closing detection mechanism (14), and the positioning and release mechanism (15) are all fixed on the base plate (16). The main control board (12) is electrically connected to the monitoring center. The main control board (12) is electrically connected to the door opening detection mechanism (13), the door closing detection mechanism (14), and the positioning and release mechanism (15) respectively. One end of the first connecting rod (3) is rotatably connected to the base plate (16), the other end of the first connecting rod (3) is rotatably connected to one end of the second connecting rod (4), and the end of the second connecting rod (4) away from the first connecting rod (3) is rotatably connected to the hydraulic device (2); The hydraulic actuator (2) is fixed to the fire door. When the fire door is opened, the hydraulic actuator (2) drives the second connecting rod (4) to rotate, and the second connecting rod (4) drives the first connecting rod (3) to rotate. When the fire door is opened to the correct position, the first connecting rod (3) forms an angle α with the bottom edge or the extension line of the bottom edge of the base plate (16). The positioning and release mechanism (15) locks the first connecting rod (3). The door opening detection mechanism (13) detects the door opening to the correct position by detecting the position of the first connecting rod (3) and sends the signal to the main control board (12). The main control board (12) then transmits the signal to the monitoring center. When the fire door needs to be closed, the monitoring center sends a closing signal to the main control board (12). The main control board (12) drives the positioning and release mechanism (15) to release the lock on the first link (3), or directly applies a closing force to the fire door. When the closing force reaches a predetermined value, the first link (3) is unlocked from the positioning and release mechanism (15). The main body (1) is fixed on or near the door frame of the fire door. When the fire door is closed in place, the closing detection mechanism (14) detects that the fire door is closed in place and sends a signal to the main control board (12). The main control board (12) then transmits the signal to the monitoring center.

2. The linkage-type door closer for monitoring the opening and closing status of a fire door according to claim 1, characterized in that, The door opening detection mechanism (13) is a first micro switch (131). The first micro switch (131) is provided with a first spring (1311). The first spring (1311) is set in the direction of the first connecting rod (3). When the first connecting rod (3) forms an angle α with the bottom edge of the base plate (16), it means that the door is open. The first connecting rod (3) presses on the first spring (1311). At this time, the first micro switch (131) changes from the off state to the on state or from the on state to the off state. The main control board (12) receives the state change signal of the first micro switch (131) and transmits the state change signal to the monitoring center.

3. The linkage-type door closer for monitoring the opening and closing status of a fire door according to claim 1, characterized in that, The base plate (16) is provided with a mounting post. The door closing detection mechanism (14) includes a second micro switch (141), a torsion spring (142), and a rocker (143). The second micro switch (141) is provided with a second spring (1411). The torsion spring (142) is sleeved on the mounting post. The rocker (143) is provided with a mounting hole (1433) in the middle. The torsion spring (142) is fixed in the mounting hole (1433). The two ends of the rocker (143) are a first end (1431) and a second end (1432), respectively. The second micro switch (141) is fixed on the base plate (16) and is located near the first end (1431). When the fire door is not closed, the first end (1431) is pressed against the second spring (1411) under the torsional force of the torsion spring (142). The second micro switch (141) is always in the on or off state. When the fire door is closed, the fire door presses against the second end (1432), and the first end (1431) lifts up away from the second spring (1411). The second micro switch (141) changes from the on state to the off state or from the off state to the on state. The main control board (12) receives the state change signal of the second micro switch (141) and transmits the state change signal to the monitoring center.

4. The linkage-type door closer for monitoring the opening and closing status of a fire door according to claim 1, characterized in that, The door opening detection mechanism (13) can also be a pressure sensor, angular displacement sensor, photoelectric sensor or magnetic induction sensor.

5. The linkage-type door closer for monitoring the opening and closing status of a fire door according to claim 1, characterized in that, The door closing detection mechanism (14) may also include only a micro switch, pressure sensor, angular displacement sensor, photoelectric sensor or magnetic induction sensor.

6. The linkage-type door closer for monitoring the opening and closing status of a fire door according to claim 1, characterized in that, The positioning and release mechanism (15) is an electromagnetic locking mechanism, a mechanical buckle, or a mechanical locking tongue mechanism.

7. The linkage-type door closer for monitoring the opening and closing status of a fire door according to claim 1, characterized in that, The first link (3) and / or the second link (4) are telescopic links with adjustable lengths. A locking structure is provided between the first link (3) and the second link (4). The locking structure is a slide lock structure or a gear lock structure.

8. The linkage-type door closer for monitoring the opening and closing status of a fire door according to claim 1, characterized in that, When the fire door is fully open, the angle α formed by the first connecting rod (3) and the bottom edge or the extension line of the bottom edge of the base plate (16) is 60-150°.

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