An audible and visual alarm device suitable for identifying the state of normally closed doors in production workshops

Abstract

This utility model discloses an audible and visual alarm device suitable for identifying the status of normally closed doors in production workshops. It includes a cable protection housing with two connecting cables inside. An insulating mounting box is installed in the middle of the housing, and audible and visual buzzers are installed on the inner sides of both ends of the box. Opening and closing monitoring units are installed at both ends of the housing, each including a protective box with a cover fixedly installed at its front end. A limit switch is fixedly installed inside the box, with two contact plates mounted on the upper surface of each limit switch. A pressure sensor is fixedly installed in the middle of each contact plate. Both audible and visual buzzers are connected to a power supply via connecting cables. This utility model, by adding limit switches in parallel, can continuously and promptly monitor the status of workshop doors and issue alarms via audible and visual buzzers, effectively improving the accuracy of door closure and monitoring fault tolerance.

Description

Technical Field

[0001] This utility model relates to the field of door status detection technology, specifically to an audible and visual alarm device suitable for identifying the status of normally closed doors in production workshops. Background Technology

[0002] Due to environmental control requirements such as cleanliness and pressure differential, cosmetic production workshops often install normally closed doors in non-functional areas to ensure environmental control and the entry and exit of materials and personnel. These doors are typically required to be normally closed, and door closers are installed to achieve this. However, when the door closers have been closed a certain number of times, the normally closed door may fail to close automatically after being opened, causing uncertainty in workshop cleanliness and pressure differential between functional areas.

[0003] Existing door closers cannot monitor the status of workshop doors in real time when malfunctions occur, thus failing to guarantee stable and timely closure of the doors. Therefore, they do not meet current requirements. To address this, we propose an audible and visual alarm device suitable for identifying the status of normally closed doors in production workshops. Utility Model Content

[0004] The purpose of this utility model is to provide an audible and visual alarm device suitable for identifying the status of normally closed doors in production workshops, in order to solve the problem mentioned in the background art that when existing door closers are used to close workshop doors, the status of the workshop doors cannot be monitored in real time when a malfunction occurs, thus failing to ensure the stable and timely closing of the workshop doors.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an audible and visual alarm device suitable for identifying the state of normally closed doors in a production workshop, comprising a cable protection shell, two connecting cables on the inner side of the cable protection shell, an insulating mounting box installed in the middle of the cable protection shell, audible and visual buzzers installed on the inner sides of both ends of the insulating mounting box, an opening and closing monitoring unit installed at both ends of the cable protection shell, the opening and closing monitoring unit comprising a protective box, a cover fixedly installed at the front end of the protective box, a limit switch fixedly installed on the inner side of the protective box, two contact pieces installed on the upper surface of the limit switch, a pressure sensor fixedly installed in the middle of the contact pieces, and both audible and visual buzzers connected to a power supply via connecting cables.

[0006] Preferably, both ends of the cable protective housing are fixedly connected to the two protective boxes, the two opening and closing monitoring units are symmetrically installed relative to the cable protective housing, and the two audible and visual buzzers and limit switches are electrically connected to the two power supplies through connecting cables.

[0007] Preferably, the two sound and light buzzers and limit switches are arranged in parallel, and both ends of the two connecting cables pass through the cable protection shell and the protective box and are fixedly connected to the limit switch.

[0008] Preferably, a door frame is installed on the rear end face of the two opening and closing monitoring units, and the door frame is fixedly connected to the two protective boxes, which are located on the sides at both ends of the door frame.

[0009] Preferably, the bottom end of the contact piece passes through the protective box and is fixedly connected to the limit switch, the pressure sensor is electrically connected to the limit switch, and the surface of the pressure sensor is in contact with the door frame.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model electrically connects two audible and visual buzzers and two limit switches to two power supplies via connecting cables, keeping the two audible and visual buzzers and two limit switches in parallel. This allows both power supplies to provide synchronous and continuous power to the two audible and visual buzzers and limit switches, effectively preventing the workshop door from not closing and the audible and visual alarm from failing to be activated in time if one of the connecting cables, audible and visual buzzers, limit switches, or power supplies is damaged or malfunctions. 2. This utility model connects the pressure sensor to the workshop door and the door frame via a contact piece, so that the limit switches in the two opening and closing monitoring units can sense and monitor the opening and closing status of the workshop door through the pressure sensor. When the workshop door is not in contact with the pressure sensor, an electrical signal is generated and transmitted to the audible and visual buzzer through the limit switch and connecting cable to realize timely audible and visual alarm. The two opening and closing monitoring units are symmetrically installed with respect to the cable protection shell and installed on the sides of both ends of the door frame, which effectively improves the fault tolerance of the audible and visual alarm for opening and closing the workshop door. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded structural diagram of the opening and closing monitoring unit of this utility model; Figure 3 This is the overall wiring diagram of this utility model.

[0012] In the diagram: 1. Cable protection housing; 2. Connecting cable; 3. Insulating mounting box; 4. Audible and visual buzzer; 5. Protective box; 6. Cover; 7. Limit switch; 8. Contact plate; 9. Pressure sensor; 10. Opening and closing monitoring unit; 11. Power supply. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Please see Figure 1 and Figure 2 This utility model provides an embodiment of an audible and visual alarm device suitable for identifying the status of normally closed doors in a production workshop. It includes a cable protection housing 1, with two connecting cables 2 inside the cable protection housing 1. Opening and closing monitoring units 10 are installed at both ends of the cable protection housing 1, and the two opening and closing monitoring units 10 are symmetrically installed relative to the cable protection housing 1. Each opening and closing monitoring unit 10 includes a protective box 5. Both ends of the cable protection housing 1 are fixedly connected to the two protective boxes 5. A cover 6 is fixedly installed at the front end of the protective box 5. A limit switch 7 is fixedly installed inside the protective box 5. Both ends of the two connecting cables 2 pass through the cable protection housing 1 and the protective box 5 and are fixedly connected to the limit switch 7. The protection of the protective box 5 facilitates the limit switch 7 in identifying the opening and closing of the workshop door. Two contact pieces 8 are installed on the upper surface of the limit switch 7. A pressure sensor 9 is fixedly installed in the middle of the contact piece 8. A door frame is installed on the rear end of the two opening and closing monitoring units 10. The door frame is fixedly connected to two protective boxes 5. The two protective boxes 5 are located on the sides of both ends of the door frame. The bottom end of the contact piece 8 passes through the protective box 5 and is fixedly connected to the limit switch 7. The pressure sensor 9 is electrically connected to the limit switch 7. The surface of the pressure sensor 9 is in contact with the door frame. When the workshop door does not contact the pressure sensor 9, an electrical signal is generated and transmitted to the audible and visual buzzer 4 through the limit switch 7 and the connecting cable 2 to realize timely audible and visual alarm.

[0015] Please see Figure 1 and Figure 3 An insulating mounting box 3 is installed in the middle of the cable protection shell 1. A sound and light buzzer 4 is installed on the inner side of both ends of the insulating mounting box 3. Both sound and light buzzers 4 are connected to power supply 11 through connecting cables 2. Both sound and light buzzers 4 and limit switches 7 are electrically connected to the two power supply 11 through connecting cables 2. The two sound and light buzzers 4 and limit switches 7 are set in parallel, so that both power supply 11 can provide synchronous and continuous power supply to the two sound and light buzzers 4 and limit switches 7. This effectively avoids the failure to perform sound and light alarm operation in time if one of the connecting cables 2, sound and light buzzers 4, limit switches 7 and power supply 11 is damaged or malfunctions.

[0016] In summary, when monitoring and alarming the opening and closing status of the door frame in the cosmetics production workshop, two audible and visual buzzers 4 are fixedly installed in the middle of the cable protection housing 1 through an insulating mounting box 3. This ensures that the two audible and visual buzzers 4 and the two limit switches 7 are electrically connected to the two power supplies 11 through connecting cables 2, maintaining the two audible and visual buzzers 4 and the two limit switches 7 in parallel. This allows both power supplies 11 to provide synchronous and continuous power to the two audible and visual buzzers 4 and the limit switches 7, effectively preventing the workshop door from not closing and the audible and visual alarm from failing to be activated in time if one of the connecting cables 2, the audible and visual buzzers 4, the limit switches 7, or the power supplies 11 is damaged or malfunctions. When the workshop door is opened or closed, the pressure sensor 9 is connected to the workshop door and the door frame through the contact piece 8, so that the limit switches 7 in the two opening and closing monitoring units 10 can sense and monitor the opening and closing status of the workshop door through the pressure sensor 9. When the workshop door is not in contact with the pressure sensor 9, an electrical signal is generated and transmitted to the audible and visual buzzer 4 through the limit switch 7 and the connecting cable 2 to realize timely audible and visual alarm. The two opening and closing monitoring units 10 are symmetrically installed with respect to the cable protection shell 1 and installed on the sides of both ends of the door frame, which effectively improves the fault tolerance of the audible and visual alarm for opening and closing the workshop door.

[0017] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An audible and visual alarm device for identifying the state of normally closed doors in a production workshop, comprising a cable protection housing (1), characterized in that: The inner side of the cable protection shell (1) is provided with two connecting cables (2). An insulating mounting box (3) is installed in the middle of the cable protection shell (1). A sound and light buzzer (4) is installed on the inner side of both ends of the insulating mounting box (3). An opening and closing monitoring unit (10) is installed on both ends of the cable protection shell (1). The opening and closing monitoring unit (10) includes a protective box (5). A cover (6) is fixedly installed on the front end of the protective box (5). A limit switch (7) is fixedly installed on the inner side of the protective box (5). Two contact pieces (8) are installed on the upper surface of the limit switch (7). A pressure sensor (9) is fixedly installed in the middle of the contact piece (8). The two sound and light buzzers (4) are connected to a power supply (11) through the connecting cables (2).

2. The audible and visual alarm device for identifying the state of normally closed doors in a production workshop according to claim 1, characterized in that: The two ends of the cable protection shell (1) are fixedly connected to the two protective boxes (5). The two opening and closing monitoring units (10) are symmetrically installed relative to the cable protection shell (1). The two sound and light buzzers (4) and limit switches (7) are electrically connected to the two power supplies (11) through connecting cables (2).

3. The audible and visual alarm device for identifying the state of normally closed doors in a production workshop according to claim 1, characterized in that: The two sound and light buzzers (4) and the limit switch (7) are connected in parallel. Both ends of the two connecting cables (2) pass through the cable protection shell (1) and the protective box (5) and are fixedly connected to the limit switch (7).

4. The audible and visual alarm device for identifying the state of normally closed doors in a production workshop according to claim 1, characterized in that: A door frame is installed on the rear end face of the two opening and closing monitoring units (10), and the door frame is fixedly connected to two protective boxes (5). The two protective boxes (5) are located on the sides of both ends of the door frame.

5. The audible and visual alarm device for identifying the state of normally closed doors in a production workshop according to claim 1, characterized in that: The bottom end of the contact piece (8) passes through the protective box (5) and is fixedly connected to the limit switch (7). The pressure sensor (9) is electrically connected to the limit switch (7). The surface of the pressure sensor (9) is in contact with the door frame.

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