JPH11339154A - Testing tank for smoke sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a testing tank for smoke sensor without affecting smoke flowing-in property. SOLUTION: In this testing tank for smoke sensor executing the sensitivity test of the smoke sensor by circulating smoke, etc., for testing sensitivity, the fixing plate 2 of the sensor is fixed to the outer wall of the upper surface of the testing tank, a sensor base 15 is fixed to the plate 2, a sensor head 12 is connected to the base 15 by rotation and then a contact probe is brought into contact with a printed substrate inside of the smoke sensor through the opening 16 of the base 15 and the openings 14 of the head 12 to execute the test.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a test tank for a smoke detector.

[0002]

2. Description of the Related Art As a test tank for testing the sensitivity of a generally used smoke detector, a circulation type test tank 1 shown in FIG. 4 is widely used. The test tank 1 circulates smoke and the like for a sensitivity test in the tank, thereby forming a smoke detector 1.
A sensitivity test of 0 is performed. Then, using the mounting plate 2 shown in FIGS. 4 and 5, the smoke detector 10 to be inspected is set in the test tank 1, and the contact probe 20 is inserted from the upper surface of the smoke detector 10, and the smoke detector is inserted. Electrical continuity is performed to the printed circuit board 10 inside to perform a sensitivity test and a sensitivity adjustment.

[0003]

As a method for setting the smoke detector 10, as shown in FIG.
1 and the contact probe 20 is held down by the holding bar 3, so that the smoke and the substance that substitutes for the smoke flowing through the test tank 1 of the smoke detector adversely affect the inflow of smoke entering the smoke detector 10. I was

The present invention has been made to solve the above problems, and an object of the present invention is to provide a test tank for a smoke detector which does not affect smoke inflow.

[0005]

According to the first aspect of the present invention, there is provided a smoke detector for performing a sensitivity test of a smoke sensor by circulating smoke for a sensitivity test. In the test tank, a mounting plate for the sensor is fixed to the outer wall of the upper surface of the test tank, a sensor base is mounted on the mounting plate, and a sensor head is connected to the sensor base by rotation. The test is performed by contacting the printed circuit board inside the smoke sensor through the opening of the sensor base and the opening of the sensor head.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a top view of the sensor base and the sensor head, FIG. 2 is a top view of the sensor head, and FIG. 3 is a front view showing a mounting portion of the smoke sensor.

As shown in FIGS. 1 and 2, the smoke detector 10 includes a sensor head 12 and a sensor base 15. As shown in FIG. 2, the sensor head 12 has two receiving blades 13, 13, and two plug blades (not shown) are provided corresponding to the sensor base 15. By rotating the sensor head 12 with respect to the sensor base 15,
The sensor head 12 is attached to the sensor base 15 by electrically and mechanically connecting the blades 3 and 13 and the blade.

In this embodiment, as shown in FIG. 3, the detector base 15 is mounted on the mounting plate 2 of the test tank 1 of the smoke detector. Further, the sensor head 12 is connected to the sensor base 15 by rotating, and the smoke detector 10 to be inspected is fixed to the test tank 1.

Next, the contact probe 20 has a support portion 21 and an acrylic portion 22, and the contact probe 2
Reference numeral 0 designates a contact with the printed circuit board inside the smoke detector 10 through the opening 16 of the sensor base 15 and the openings 14, 14,... Of the sensor head 12.

Further, support plates 4 and 4 are provided upright on the mounting plate 2, and the support plates 4 and 4 are provided with lock rods 5 and 5 for locking the support portion 21 at a lower position.

A method of attaching the smoke detector 10 to the test tank 1 with the above configuration will be described. The mounting plate 2 is mounted on the upper surface of the test tank 1 in advance, and the sensor base 15 is also mounted in advance. The smoke detector 10 (detector head 12) to be inspected is pivotally attached to the detector base 15. Next, the contact probe 20 is brought into contact with the internal printed circuit board through the opening 16 of the sensor base 15 and the opening 14 of the sensor head 12. Thereafter, a test for a predetermined smoke sensitivity is performed.

Since the position of the plug blade of the sensor base 15 is fixed, the position of the opening 14 of the connected sensor head 12 is also constant, and the contact probe 20 can be inserted through the opening 14. .

In addition, since the suppression bar 3 which is present in the conventional example can be eliminated, the influence of the smoke inflow of the smoke detector as the inspection object is eliminated.

[0014]

According to the first aspect of the present invention, it is possible to eliminate the restraining bar existing in the conventional example, and to improve the smoke inflow into the smoke detector as the inspection object. Play.

[Brief description of the drawings]

FIG. 1 is a top view of a sensor base and a sensor head according to an embodiment of the present invention.

FIG. 2 is a top view of the same sensor head.

FIG. 3 is a front view showing a mounting portion of the smoke detector.

FIG. 4 is a perspective view showing a test tank of the smoke detector.

FIG. 5 is a view showing a mounting structure of a conventional smoke detector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Smoke detector test tank 2 Mounting plate 3 Holding bar 4 Support plate 5 Lock bar 10 Smoke detector 11 Smoke detector head 12 Detector head 13 Receiving blade 14 Opening 15 Sensor base 16 Opening 20 Contact probe

Claims (1)

[Claims] In a test chamber for a smoke detector for performing a sensitivity test of a smoke detector by circulating smoke or the like for a sensitivity test, a mounting plate of the sensor is fixed to an outer wall of an upper surface of the test chamber. After attaching the sensor base to the mounting plate and pivotally connecting the sensor head to the sensor base, the contact probe is passed through the opening of the sensor base and the opening of the sensor head to the printed circuit board inside the smoke sensor. A test tank for a smoke detector, characterized in that the test is carried out by contacting the test tank.