JPH0739029Y2 - Fire detector - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to a fire detector in a fire alarm facility that senses and notifies the occurrence of a fire.

[Prior Art] As shown in FIG. 3, a fire detector in a fire alarm system is an electric device that converts a detection signal from a detection unit 1 that detects heat, smoke, light, etc. generated by a fire into an electric signal. A sensor body 4 in which the circuit portion 2 is housed inside and a blade receiving member 3 as an output terminal for outputting the electric signal to the outside is provided on the outside, and although not shown, this sensor body 4 is mounted on the ceiling surface. In general, it is detachably installed on the device, etc., and is generally composed of a blade receiving member provided on the main body side for taking out an electric signal and a sensor base provided with a blade member to be inserted and connected. . Although the blade receiving member and the blade member are provided on either the sensor main body or the sensor base, it is an arbitrary matter, but in the following description of the present invention, the blade receiving member on the sensor main body side is
It is assumed that the blade member is installed on the sensor base side.

Now, looking at the electrical connection between the electric circuit section and the output terminal in the conventional sensor body, as shown in FIG. 4, the printed circuit board 5 on which the electric circuit section 2 is mounted and the blade receiving as the output terminal are shown. Between the member 6 and one conductive strut 7, two screws 9 and 10 for electrically connecting to the conductive strut 7 and fixing to the base 8 are provided.

[Problems to be Solved by the Invention] If the structure is made by connecting and fixing using the above-mentioned conductive columns 7 and screws 9 and 10, the number of parts increases and the product cost rises, and as an output terminal Blade receiving member 6
However, as the screw 9 loosens, it rotates around the screw 9,
There is a problem that it is difficult to insert and connect the blade member on the sensor base side.

[Means for Solving the Problems] In the fire detector according to the present invention, the blade member or the blade receiving member provided on the side of the detector body is provided with an extension portion at a portion deviating from the supporting portion, and the extension portion is provided. The above problem is solved by inserting the sensor body and connecting to the electric circuit section.

[Embodiment] An embodiment of the fire detector according to the present invention will be described below with reference to the drawings. At least one of the blade receiving fittings 11 constituting the blade receiving member has an extending portion 12 as shown in FIG. Is provided.

In this embodiment, the extending portion 12 is formed by making a notch in the center of the blade receiving metal fitting 11 and bending the blade at a right angle, but this is for the purpose of effectively taking parts by minimizing the area of the member. In order to adjust the spring pressure when it becomes a spring material at the time of insertion connection, it is formed in this way, but it is limited to this embodiment as long as it is integrally formed as shown in FIG. 2, for example. It goes without saying that it is not a thing.

A hole 13 through which a screw is inserted is formed in one end of the blade receiving metal fitting 11, and is screwed onto the base 8 together with the other blade receiving metal fitting 14 constituting the blade receiving member through this hole 13. At this time, the extending portion 12 is exposed on the back surface of the base 8 through the through hole 15 formed in the base 8. Then, the printed circuit board 5 on which the electric circuit portion 2 is mounted is soldered to the extending portion 12 that is exposed on the back surface. In this way, the blade receiving member is completed.

[Advantages of the Invention] As described above, in the fire detector according to the present invention, the blade member or the blade receiving member provided on the detector body side is provided with the extension portion at a position deviating from the supporting portion, and the extension portion is provided. Since I tried to connect it to the electric circuit part by inserting the sensor main body,
The electrical connection and fixing to the base can be performed only by using one screw and soldering, which makes it possible to reduce the number of parts and reduce the product cost. Further, since the blade member or the blade receiving member is supported on the base by the two points of the screw and the extending portion, the screw does not rotate even if the screw loosens to some extent, and the blade receiving member or the blade member on the sensor base side does not rotate. It is possible to make the insertion connection easily and surely.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an essential part of an embodiment of a fire detector according to the present invention, FIG. 2 is a perspective view of a blade receiving member in another embodiment of the fire detector according to the present invention, and FIG. FIG. 4 is an external view of the container, and FIG. 4 is an exploded perspective view of a main part of a conventional fire detector, in which the same parts are denoted by the same reference numerals. 2 ... electric circuit part, 4 ... sensor body, 6 ... blade receiving member, 12 ... extension part

Claims (1)

[Scope of utility model registration request] 1. An electrical connection between a sensor body having an electric circuit portion inside and a sensor base provided on a ceiling surface or the like is performed by inserting a blade member and a blade receiving member. In a fire detector in which the blade member or blade receiving member provided on the sensor body side is supported at one location on the sensor body, the blade member or blade receiving member provided on the sensor body side is supported by the blade member or blade receiving member. A fire detector, characterized in that an extension portion is provided at a portion deviated from the location, and the extension portion is inserted into the sensor body and connected to the electric circuit portion.