Fireproof door closing state monitoring device
By designing a fire door closing state monitoring device with a signal base and a bent signal shield, the problem of difficulty in accurately detecting the closed state of a normally closed fire door in the prior art is solved, and higher detection accuracy and safety are achieved.
Patent Information
- Application Number
- CN202421226026.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-05-30
AI Technical Summary
Existing infrared monitoring devices are difficult to accurately detect the closed state of normally closed fire doors, especially when the door leaf is not closed tightly, it is impossible to effectively determine whether the door leaf is completely closed, which poses safety hazards.
A fire door closed state monitoring device including a signal base and a signal shield is designed. A groove is provided on the signal base, and a signal transmitting module and a signal receiving module are provided in the groove. The signal blocking member is bent. When the door leaf is closed, its end is inserted into the groove to block the signal transmitting and receiving module, and the signal path is cut off to determine the closed state of the door leaf.
Through the counter-radiation characteristics of the signal transmitting module and the signal receiving module, the closed state of the normally closed fire door can be accurately judged, avoiding safety hazards caused by lax closure of the door leaf, and with higher detection accuracy.
Smart Images
Figure CN223050836U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of normally closed fire doors, in particular to a monitoring device for the closed state of a fire door. Background Art
[0002] Normally closed fire doors are the main facilities to ensure that there is no smoke in the evacuation passage during a fire, and are used to construct a safe evacuation passage for people. Normally closed fire doors need to be kept in a normally closed state, and the daily monitoring of the normally closed state generally uses an infrared monitoring device. When a normally closed fire door cannot be closed normally, the infrared rays emitted by the infrared monitoring device installed on the fire door are not cut off, and the infrared monitoring device sends this information to the monitoring host. The monitoring host controls the alarm module to emit alarm sound and light, so that the fire duty personnel can know and then take measures to repair it. Existing infrared monitoring devices are generally installed on the end face of the door frame. When the door leaf is closed, the top or bottom of the door leaf will coincide with the end face of the door frame, thus cutting off the infrared rays emitted by the infrared device, so that the monitoring device detects that the door leaf is in the closed state. However, when the door leaf is not tightly closed, there is still an overlapping area between the door leaf and the end face of the door frame, and the infrared rays may still be cut off, so that the monitoring device always detects a normally closed signal and it is difficult to detect the state that the door leaf is not tightly closed, which poses a safety hazard. Content of the Utility Model
[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a monitoring device for the closed state of a fire door with higher detection accuracy.
[0004] According to the monitoring device for the closed state of a fire door of an embodiment of the utility model, it includes a signal seat, at least one groove is provided on the signal seat, a corresponding signal transmitting module and a signal receiving module are respectively provided on two opposite inner side walls of the groove, and the signal seat is used to be arranged on the door frame; a signal shielding member, the signal shielding member corresponds to the groove one by one, the signal shielding member is in a bent shape, one end of the signal shielding member is arranged on the surface of the door leaf, and when the door leaf is closed, the other end of the signal shielding member is inserted into the groove to shield the signal transmitting module and the signal receiving module.
[0005] According to some embodiments of the utility model, the signal shielding member includes a connecting seat and a bent part, the connecting seat is used to be arranged on the door leaf, the bent part includes a first bent part, a second bent part and a shielding part which are connected in sequence, the first bent part is connected with the connecting seat, the shielding part is perpendicular to the door leaf, and when the door leaf is closed, the shielding part is inserted into the groove to shield the signal transmitting module and the signal receiving module.
[0006] According to some embodiments of the utility model, the signal shielding member is an integrally injection-molded structure.
[0007] According to some embodiments of the present utility model, the length of the shielding portion is not greater than the vertical distance from the top of the shielding portion to the doorframe.
[0008] According to some embodiments of the present utility model, the signal base includes a housing with an open bottom, a bottom plate for sealing the open bottom of the housing, and a circuit board disposed in the housing. The signal transmitting module and the signal receiving module are respectively disposed on the circuit board. The groove is formed in the housing, and through holes are respectively formed in two opposite inner sidewalls of the groove for passing through the corresponding signal transmitting module and signal receiving module.
[0009] According to some embodiments of the present utility model, the groove penetrates through the edge of the housing and the bottom plate.
[0010] According to some embodiments of the present utility model, a main control module and a communication module are provided on the circuit board. The main control module is electrically connected to the signal transmitting module, the signal receiving module, and the communication module respectively. The main control module detects the status information of the signal transmitting module and the signal receiving module and uploads the status information to the host computer through the communication module. The host computer determines the closing state of the fire door according to the status information.
[0011] According to some embodiments of the present utility model, a status display module electrically connected to the main control module is further included. The status display module includes a lamp bead D5 and a lamp bead D6 respectively electrically connected to the main control module. The lamp bead D5 is used to display the communication status between the main control module and the host computer, and the lamp bead D6 is used to display the opening and closing status of the door leaf.
[0012] According to some embodiments of the present utility model, an anti-reverse connection module electrically connected to the communication module is further included. The host computer inputs a control command to the main control module through the anti-reverse connection module and the communication module to control the working states of the signal transmitting module and the signal receiving module.
[0013] The monitoring device for the closed state of a fire door according to the embodiment of the present utility model has at least the following beneficial effects: By using the opposed characteristics of the signal transmitting module and the signal receiving module, when the door leaf is closed, the end of the bent signal shielding member can be inserted into the groove of the signal seat to shield the signal transmitting module and the signal receiving module, cutting off the opposed path between the signal transmitting module and the signal receiving module, so that the signal receiving module cannot receive the signal emitted by the signal transmitting module. At this time, it can be judged that the normally closed fire door is closed normally. On the contrary, when the normally closed fire door is not closed normally (including not being closed tightly, resulting in partial misalignment between the door leaf and the door frame), since the signal seat is arranged on the door frame and the signal shielding member is arranged on the surface of the door leaf, the end of the signal shielding member cannot be well inserted into the groove, thus unable to completely shield the opposed path between the signal transmitting module and the signal receiving module. The signal receiving module can still receive the emitted signal. At this time, it can be judged that the normally closed fire door is not closed normally, and the detection accuracy is higher.
[0014] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The following further describes the specific embodiments of the present utility model with reference to the drawings;
[0016] Figure 1 is a structural diagram of the monitoring device for the closed state of a fire door;
[0017] Figure 2 is a schematic diagram of the monitoring device for the closed state of a fire door applied to a fire door;
[0018] Figure 3 is a structural diagram of the signal shielding member;
[0019] Figure 4 is a rear structural diagram of the signal seat;
[0020] Figure 5 is an exploded structural diagram of the signal seat;
[0021] Figure 6 is a circuit schematic diagram of the monitoring device for the closed state of a fire door. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to visually and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.
[0023] In the description of the present utility model, it should be understood that for the orientation descriptions, such as the orientations or positional relationships indicated by up, down, front, back, left, right, etc., they are based on the orientations or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0024] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more. Understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0025] Referring to Figures 1 to 6 , a fire door closed state monitoring device of the present utility model includes a signal base 10 provided on the front / back of the door frame and a signal shielding member 20 provided on the surface of the door leaf. At least one groove 100 is provided on the signal base 10, and a corresponding signal transmitting module 31 and a signal receiving module 32 are respectively provided on two opposite inner side walls of the groove 100; the signal shielding member 20 corresponds to the groove one by one and includes a connecting seat 21 and a U-shaped bending portion 22. The connecting seat 21 is used to be provided on the front / back of the door leaf. One end of the U-shaped bending portion 22 is vertically connected to the connecting seat 21. When the door leaf is closed, the other end of the U-shaped bending portion 22 is inserted into the groove 100 to shield the signal transmitting module 31 and the signal receiving module 32.
[0026] As Figure 3, the U-shaped bending part 22 includes a first bending part 221, a second bending part 222 and a shielding part 223 connected in sequence. The first bending part 221 is vertically connected to the connecting seat 21, the second bending part 222 is parallel to the door leaf, and the shielding part 223 is parallel to the first bending part 221. When the door leaf is closed, the shielding part 223 is inserted into the groove 100 to shield the signal transmitting module 31 and the signal receiving module 32. By using the opposed characteristics of the signal transmitting module 31 and the signal receiving module 32, when the door leaf is closed, the shielding part 223 is inserted into the groove 100 of the signal seat 10 to shield the signal transmitting module 31 and the signal receiving module 32, cutting off the opposed path between the signal transmitting module 31 and the signal receiving module 32, so that the signal receiving module 32 cannot receive the signal transmitted by the signal transmitting module 31. At this time, it can be judged that the normally closed fire door is closed normally; on the contrary, when the normally closed fire door is not closed normally (including not being closed tightly, resulting in partial misalignment between the door leaf and the door frame), since the signal seat 10 is arranged on the front / back of the door frame and the signal shielding member 20 is arranged on the front / back of the door leaf, the shielding part 223 cannot be well inserted into the groove 100, so that the opposed path between the signal transmitting module 31 and the signal receiving module 32 cannot be completely shielded, and the signal receiving module 32 can still receive the transmitted signal. At this time, it can be judged that the normally closed fire door is not closed normally, and the detection accuracy is higher.
[0027] Preferably, the signal transmitting module 31 uses an infrared emitting tube, the signal receiving module 32 uses an infrared receiving tube, and the signal shielding member 20 is an integrally injection-molded structure, which can shield the infrared opposed path, and the plastic signal shielding member 20 is convenient for cutting the length of the shielding part 223 to be suitable for grooves 100 with different depths or signal transmitting modules 31 and signal receiving modules 32 arranged at different depths in the groove 100. For example, some grooves 100 have a deeper depth and the signal transmitting module 31 and the signal receiving module 32 are respectively arranged at positions close to the door frame, and a larger length of the shielding part 223 is required to completely cut off the opposed path. In some embodiments, the signal transmitting module 31 and the signal receiving module 32 are respectively arranged at the middle positions of the inner side walls of the groove 100. At this time, the length of the shielding part 223 is not greater than the vertical distance from the top of the shielding part 223 to the door frame, that is, as long as the signal transmitting module 31 and the signal receiving module 32 can be completely shielded when the door leaf is closed, and the end of the shielding part 223 is preferably not in contact with the door frame to avoid the door frame hitting the shielding part 223 when the door leaf closes violently.
[0028] Such as Figure 4 And Figure 5, the signal base 10 includes a housing 11 with an open bottom, a bottom plate for blocking the open bottom of the housing 11, and a circuit board 13 disposed in the housing 11. The signal transmitting module 31 and the signal receiving module 32 are respectively disposed on the circuit board 13. A groove 100 is formed on the housing 11, and through holes 110 are respectively formed on two opposite inner side walls of the groove 100 for passing the corresponding signal transmitting module 31 and signal receiving module 32. Preferably, the groove 100 penetrates through the edge and the bottom plate of the housing 11, which is convenient for processing and manufacturing.
[0029] As Figure 6 , a main control module 30, a communication module 33, a step-down module 35, and a status display module 34 are provided on the circuit board 13. The main control module 30 is electrically connected to the signal transmitting module 31, the signal receiving module 32, the communication module 33, the step-down module 35, and the status display module 34 respectively. The step-down module 35 converts the external higher voltage into a working voltage to supply power to the main control module 30, the communication module 33, the status detection module, etc. respectively. The main control module 30 detects the status information of the signal transmitting module 31 and the signal receiving module 32 and uploads the status information to the host computer through the communication module 33. The host computer judges the closing state of the fire door according to the status information. The status display module includes a lamp bead D5 and a lamp bead D6 which are respectively electrically connected to the main control module. The lamp bead D5 is used to display the communication status between the main control module and the host computer. Blinking at 1 Hz indicates that the above functions are normal, and not lighting or lighting constantly indicates that the above functions are abnormal; the lamp bead D6 is used to display the opening and closing state of the door leaf. The lamp does not light in the closed state, and lights or blinks in the open state. In some embodiments, two grooves 100 are provided on the signal base 10, and there are two corresponding signal shielding members 20. The signal transmitting module 31 includes a first transmitting module 311 and a second transmitting module 312, and the signal receiving module 32 includes a first receiving module 321 and a second receiving module 322.
[0030] It further includes an anti-reverse connection module 36 electrically connected to the communication module 33. For example, during on-site debugging simulation, the host computer inputs control commands to the main control module 30 through the anti-reverse connection module 36 and the communication module 33 to control the signal transmitting module 31 and the signal receiving module 32 to emit or turn off signals, which is convenient for simulation debugging.
[0031] Those skilled in the art can easily understand that, on the premise of no conflict, the above preferred methods can be freely combined and superimposed.
[0032] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, are included in the patent protection scope of the present invention.
Claims
1. A fire door closing state monitoring device, characterized in that: include: A signal seat (10), wherein at least one groove (100) is provided on the signal seat (10), and corresponding signal transmitting modules (31) and signal receiving modules (32) are respectively provided on two opposite inner side walls of the groove, and the signal seat (10) is used to be arranged on a door frame; A signal shielding member (20), the signal shielding member (20) corresponding to the groove (100) one by one, the signal shielding member (20) being in a bent shape, one end of the signal shielding member (20) being arranged on the surface of the door leaf, and when the door leaf is closed, the other end of the signal shielding member (20) is inserted into the groove (100) to shield the signal transmitting module (31) and the signal receiving module (32).
2. The fire door closing state monitoring device according to claim 1, characterized in that: The signal shielding member (20) comprises a connecting seat (21) and a bending portion (22); the connecting seat (21) is used to be arranged on a door leaf; the bending portion (22) comprises a first bending portion (221), a second bending portion (222) and a shielding portion (223) which are connected in sequence; the first bending portion (221) is connected to the connecting seat; the shielding portion (223) is perpendicular to the door leaf; when the door leaf is closed, the shielding portion (223) is inserted into the groove to shield the signal transmitting module and the signal receiving module.
3. The fire door closing state monitoring device according to claim 2, characterized in that: The signal shielding member is an integrated injection-molded structure.
4. The fire door closing state monitoring device according to claim 3, characterized in that: The length of the shielding portion (223) is no greater than the vertical distance from the top of the shielding portion (223) to the door frame.
5. The fire door closing state monitoring device according to claim 1, characterized in that: The signal socket (10) comprises a shell (11) with a bottom opening, a bottom plate (12) for sealing the bottom opening of the shell (11), and a circuit board (13) arranged in the shell (11); the signal transmitting module (31) and the signal receiving module (32) are respectively arranged on the circuit board (13); the groove (100) is provided on the shell (11); and through holes (110) are respectively provided on two opposite inner side walls of the groove (100) for passing the corresponding signal transmitting module (31) and the signal receiving module (32).
6. The fire door closing state monitoring device according to claim 5, characterized in that: The groove (100) passes through the edge of the housing (11) and the bottom plate (12).
7. The fire door closing state monitoring device according to claim 5, characterized in that: The circuit board (13) is provided with a main control module (30) and a communication module (33); the main control module (30) is electrically connected to the signal transmitting module (31), the signal receiving module (32) and the communication module (33) respectively; the main control module (30) detects status information of the signal transmitting module (31) and the signal receiving module (32) and uploads the status information to a host computer through the communication module (33); and the host computer determines the closed state of the fire door according to the status information.
8. The fire door closing state monitoring device according to claim 7, characterized in that: It also includes a status display module (34) electrically connected to the main control module (30), the status display module includes a lamp bead D5 and a lamp bead D6 electrically connected to the main control module respectively, the lamp bead D5 is used to display the communication status between the main control module and the host computer, and the lamp bead D6 is used to display the open and closed status of the door leaf.
9. The fire door closing state monitoring device according to claim 8, characterized in that: It also includes an anti-reverse connection module (36) electrically connected to the communication module (33); the host computer inputs control commands to the main control module (30) through the anti-reverse connection module (36) and the communication module (33) to control the working states of the signal transmitting module (31) and the signal receiving module (32).