Point-contact-type fire detection alarm

Abstract

The invention discloses a point-contact-type fire detection alarm, and relates to the technical field of fire-fighting and warning. The point-contact-type fire detection alarm comprises a base shell and a fixed shell. Clamping devices are fixedly connected to two sides of the bottom of the inner wall of the fixed shell, and the fixed shell is fixedly connected with the base shell by the clamping devices. Supporting bases are fixedly connected to the top of the inner wall of the base shell, and a circuit board assembly is fixedly connected to the bottoms of the supporting bases. A fixing plateis fixedly connected to the inner wall of the base shell, and elastic contacts are fixedly connected to the bottom of the circuit board assembly. A smoke sensor is fixedly connected to the bottom center of the inner wall of the fixed shell, and a battery compartment is fixedly connected to one side of the bottom of the inner wall of the fixed shell. The top of the fixed shell is fixedly connectedwith a panel, and fixed contacts are fixedly connected to the surface of the panel and located at the corresponding positions of the elastic contacts. The point-contact-type fire detection alarm solves the problem that communication connection lines need to be connected in a one-to-one corresponding mode, installation is convenient, and the problem of no place for placing the communication connection lines is avoided.

Description

technical field [0001] The invention relates to the field of fire alarm technology, in particular to a point-contact fire detection alarm. Background technique [0002] At present, there are two key points in the communication method between the independent smoke detection alarm and the base: 1. Use the general protocol CAN, RS485, RS422, RS232 two-wire connection with polarity; this method is the most general, and there are also Due to certain limitations, the connection lines between the two must be connected one-to-one, so that the space cannot be flexibly controlled during the design, and there are certain technical requirements for the use of customers, and the connection lines cannot be inserted backwards; 2. During the installation and construction process of engineers, the base will be installed on the ceiling first, and then the probe will be connected with a red and black communication line; if the communication line is connected to the probe at a high place due to...

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Problems solved by technology

[0002] At present, there are two key points in the communication method between the independent smoke detection alarm and the base: 1. Use the general protocol CAN, RS485, RS422, RS232 two-wire connection with polarity; this method is the most general, and there are also Due to certain limitations, the connection lines between the two must be connected one-to-one, so that the space cannot be flexibly controlled during the design, and there are certain technical requirements for the use of customers, and the connection lines cannot be inserted backwards; 2. During the installation and construction process of engineers, the base will be installed on the ceiling first, and then the probe will be connected with a red and black communication line; if the communication line is connected to the probe at a high place due to environmental factors, it will cause great harm to the construction personnel. Difficulties that affect the stability of the connecting line, resulting in product quality problems

After overcoming various difficulties and connecting the connection line, due to the limited space between the base and the probe, the connection line used for communication just now has nowhere to be placed between the two, causing the communication line to be broken during the construction process. , deformation and other phenomena, leaving quality hidden dangers

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