JPH037775Y2 - - Google Patents

Description

[Detailed description of the invention] This invention displays the monitoring area of a detector that detects and alerts when a moving heat generating element such as a person enters the monitoring area or a fire is detected. This invention relates to a detector angle adjustment device for changing the monitoring area.

Many types of detectors have been proposed or implemented in the past. For example, a radiant energy detector, which is an intruder detector, uses a condenser plate with multiple optical axes to collect radiant energy from multiple directions within a monitored area. By concentrating light and detecting changes in the amount of radiant energy, when a heating element (such as a person) enters the monitoring area and the amount of radiant energy changes, this is detected and an alarm buzzer is activated. I try to make it sound like this.

By the way, such detectors are designed to be installed on the ceiling or on the wall of a room, but in this case, it is necessary to know the monitoring area of the detector installed in each of these places and to check for deviations. If it is, you need to reset it to the required range. However, if the detector is equipped with an adjustment device for making such adjustments, it is possible for someone other than the staff member to move the adjustment device and change the monitoring area after the monitoring area has been set by the staff member. can be,
In this case, this detector sends a false signal to the monitoring room that monitors whether or not there is an intruder in the monitored area such as a room or hallway, so that it is overlooked when an intruder is detected. ) This could lead to problems.

Furthermore, if a display means to clearly indicate the monitored area is attached to the detector, anyone other than the staff in charge will know the monitored area indicated by the detector, and the detector will no longer function as a detector.

In view of the above points, this device is a removable detector that prevents anyone other than a specific staff member from changing the monitoring area and prevents accidents such as missed alarms caused by such changes. The purpose of the present invention is to provide an angle adjustment device.

In this invention, in order to achieve this purpose, the angle adjustment unit is equipped with an indicator plate that is attached to the installation surface and clearly indicates the monitoring area of the detector, and an indicator knob that is pivoted on this indicator plate. The sensor is characterized in that the shaft of this angle adjustment section is configured to be freely attachable and detachable to the shaft of an optical system provided within the detector.

An embodiment of this invention will be described below with reference to the drawings. First, prior to explaining the detector adjustment device according to this invention, a radiant energy detector, which is one of the intruder detectors to which this adjustment device is applied, will be described in detail.

FIG. 1 is a cross-sectional view of such a radiant energy detector.

In this figure, reference numeral 1 denotes a mounting plate, and a chassis 2 is provided on the lower surface of the mounting plate 1. The chassis 2 is composed of a disk-shaped substrate 4 having a cylindrical edge 3, and a convex portion 5 is provided at the center of the substrate 4. Here, this convex portion 5 is for securing a rotation space for a light condensing plate 6 provided on the lower surface of this chassis 2. Further, a concave protective cover 7 is provided at the bottom of the chassis 2. This protective cover 7 includes a printed circuit board 8 and a light condensing plate 6 provided on the lower surface of the chassis 2, and a radiant energy detection sensor 9 that detects the radiant energy collected by the light condensing plate 6.
The protective cover 7 is attached to the chassis 2 with screws 11, . . . .

Further, as shown in FIG. 2, the optical system 10 is supported by support arms 12 and 13 vertically provided on the lower surface of the substrate 2, and the optical system 10 is supported by a light condensing plate 6 (this light condensing plate acceptance angle is 60°)
The shafts 14 and 15 provided on each side of the shaft are supported by bearings 16 and 17 provided on the support arms 12 and 13, respectively, and one shaft 15 is provided with a gear 18, and one side of this gear is provided with a gear 18. There is a gear 1 in the part.
9 is provided so as to mesh with the gear 18. The gear 19 has 1/3 the number of teeth of the gear 18, and a shaft 20 is coaxially provided on the gear 19. The shaft 20 is rotatably supported by a bearing portion 21 provided on the substrate 2, and a convex connecting piece 22 is formed at the tip of the shaft 20. is provided with a blind cover 23 that can be attached or detached freely.

Next, the angle adjusting device for a detector according to this invention will be explained by taking the angle adjusting device for a radiant energy detector as an example.

3A and 3B are cross-sectional views showing an example of the configuration of a radiant energy detector angle adjustment device to which the detector angle adjustment device according to the present invention is applied. In this figure, reference numeral 24 denotes an indicator plate, and mounting portions 25 and 26 are vertically provided on one surface of the indicator plate 24 at a predetermined distance apart, as shown in FIG. These attachment parts 25 and 26 are provided with recesses 27 and 28 corresponding to the shape of the edge 3 of the chassis 2 on their tip sides, and these recesses 27 and 28 are brought into contact with the edge 3. This makes it possible to align the indicator plate 24 with the radiant energy detector 30 comprising the chassis 2, the protective cover 7, the mounting plate 1, etc. Also this instruction board 2
A bearing part 31 is provided at the center of 4, and
A shaft 32 is rotatably provided in this bearing portion 31 . The shaft 32 has a stopper 3 approximately in the center thereof.
3 (see FIG. 3), and a concave connecting portion 34 corresponding to the connecting portion 22 of the shaft 20 is formed at one end, and an indicator knob 35 is provided at the other end of the shaft 32. It is provided. The indicator knob 35 is provided with a protrusion 36 on its periphery, and this indicator knob 35 and the indicator plate 24
A coil spring 37 is coaxially connected to the shaft 32 between the
is fitted, and this coil spring 37 causes the shaft 32 to
is constantly biased in the direction of arrow A. That is,
This angle adjustment device 38 is used as the third angle adjustment device at times other than adjustment.
As shown in Figure A, the connecting portion 34 of the shaft 32 and the shaft 20
The connecting portion 22 is separated, and the indicator knob 35 is
The connecting portion 34 and the connecting portion 22 are connected to each other only during adjustment when the is pressed in the direction opposite to the arrow A (see FIG. 3B).

Further, as shown in FIG. 4, the upper half of the board surface of the indicator board 24 has a "ceiling" which indicates the adjustment range when the radiant energy detector 30 is installed on the ceiling.
Along with the characters “30°” to “90°”
The scale is engraved at equal intervals. Furthermore, on the left side of the lower half of the indicator plate 24, the word "wall" is engraved to indicate the adjustment range when the radiant energy detector 30 is installed on a wall, and the word "30°" is engraved to indicate the adjustment value at this time. "~"90°" scales are engraved at equal intervals.

Next, the operation of this embodiment having the above configuration will be explained in the fifth section.
This will be explained with reference to the side view shown in the figure.

First, a case will be described in which the radiant energy detector 30 is installed on the ceiling 40 as shown in FIG. 5A. In this case, first, this radiant energy detector 3
0, and attach the angle adjustment device 38 by inserting the shaft 32 into the bearing portion 21. Next, the indicator knob 3 of this angle adjustment device 38
5 while pressing down to connect the connecting part 22 and the connecting part 34, and then align the protrusion 36 of the indicator knob 35 to the "30°" position on the ceiling side, the radiant energy can be detected. The light receiving axis (center axis) of the condenser plate 6 in the device 30 points downward at 30 degrees from the horizontal direction (parallel to the ceiling), and the area from 0 degrees to 60 degrees in the horizontal direction is the monitoring area. . If the protrusion 36 of the indicator knob 35 is set at 50 degrees, the light receiving axis will be 50 degrees below the horizontal direction and will point 20 degrees below the horizontal direction, as shown in Figure 5A. The area to be monitored is 80 degrees from where it was.
Furthermore, if you set the indicator knob 35 to "90°", it will be "60°" from the horizontal direction, and "120°" from the downward direction.
The area up to is the monitoring area. In this way, when the angle adjusting device 38 is rotated by 1/2, the light receiving axis of the light condensing plate 6 is rotated by 1/6.

Next, a case will be explained in which the radiant energy detector 30 is installed on a wall 41 as shown in FIG. 5B. In this case as well, the angle adjustment device 38 is attached to the radiant energy detection device 30 as described above. Next, rotate the indicator knob 35 to set it to "30°" on the wall side.
If the light receiving axis of the light condensing plate 6 is set to the position , the light receiving axis of the light condensing plate 6 will be oriented 30 degrees away from the wall (30 degrees away from the vertical direction), and the light receiving axis will be oriented toward the wall from 0 degrees to 60 degrees. becomes the monitoring area. Again, this instruction knob 3
If 5 is set to 60 degrees, the area to be monitored will be from 30 degrees away from the wall to 90 degrees. and,
After such angle adjustment is completed, the angle adjustment device 38 is removed, and the bearing portion 21 of the radiant energy detector 30 is closed with the blind lid 23.

In this way, in this angle adjustment device 38,
This is attached to the radiant energy detector 30 only when adjusting the angle, and the opening of the bearing section 21 is closed by the blind cover 23 at times other than when adjusting the angle, so that outsiders cannot change the monitoring area. In addition, it is possible to prevent anyone other than the person in charge from knowing the monitoring area of the installed radiant energy detector 30. Furthermore, in this case, since the change in the light receiving angle of the radiant energy detector 30 is enlarged three times and displayed, the adjustment can be facilitated. Furthermore, if the angle of the radiant energy detector 30 is adjusted using this angle adjustment device 38, the frequency of adjusting the optical system 10 directly after removing the protective cover is eliminated, and the adjustment work can be simplified. can. In the above-mentioned embodiment, rearward monitoring can also be performed by setting the indicator knob 35 to "100°" to "120°" engraved on the indicator plate 24, but in this case, the radiation After the energy detector 30 is once removed and redirected to the rear, it may be attached to the ceiling 40 to monitor the rear.

Further, in this embodiment, the indicator board 24 is designed to display the center of the monitoring area, but it does not have to be the center, but the boundary angle of the monitoring area, e.g.
It may be displayed as 30° to 90°.

Further, in this embodiment, the angle adjustment device is illustrated by means of a radiant energy detector;
The detector angle adjustment device according to this invention is not limited to this type of detector, and may be used for other intruder detectors, or fire detectors that detect fire by detecting infrared and ultraviolet rays. etc. may be used.

As explained above, the detector angle adjustment device according to this invention consists of an instruction plate that is attached to the installation surface and clearly indicates the monitoring area of the detector, and an instruction knob that is pivotally supported on this instruction plate. An angle adjusting section is configured, and the axis of the angle adjusting section is configured to be attachable and detachable to a rotating shaft of an optical system provided in the detector, so that the detector and the angle adjusting section can be separated. Therefore, it is possible to prevent anyone other than a specific staff member from changing the monitored area, and it also prevents accidents such as failure to report an intruder caused by a person other than the staff member changing the monitored area. Furthermore, it is possible to prevent anyone other than the person in charge from knowing the scope of the monitoring area. In addition, in the detector angle adjusting device according to this invention, if the change in the light receiving angle of the detector is displayed after being enlarged several times, precise angle adjustment can be performed. Furthermore, if the display board has two display modes, the angle of the detector can be adjusted whether it is installed on a ceiling or on a wall.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a radiant energy detector, which is one of the devices whose angle is adjusted by the angle adjustment device according to this invention, and FIG. 2 is a sectional view of the optical system 10 shown in FIG. 1.
3A and 3B are cross-sectional views showing one embodiment of the angle adjustment device for a detector according to this invention, and FIG. 4 is an exploded perspective view of the angle adjustment device for this detector. Figures 5A and 5B are side views for explaining this embodiment. 10... Optical system, 18, 19... Gear (reduction mechanism), 20... Axis (optical system side axis), 23... Blind lid, 24... Instruction plate, 30... Radiation energy detector, 32 ... Axis (axis of angle adjustment section), 35 ... Indication knob, 38 ... Angle adjustment device, 40 ... Ceiling (installation surface), 41 ... Wall (installation surface).

Claims (1)

[Claims for Utility Model Registration] 1. An angle adjustment unit is constituted by an indication plate attached to the installation surface with letters clearly indicating the monitoring area of the detector, and an indication knob pivoted on this indication plate. , characterized in that the axis of the angle adjustment section is configured to be freely attached and detached to a rotating shaft of an optical system provided in the detector, so that the detector and the angle adjustment section are configured to be freely attached and detached. Detector angle adjustment device. 2. According to claim 1 of the utility model registration claim, the indicator board clearly indicates the direction of the center of the monitoring area at a predetermined magnification when the detector is attached to the installation surface. Angle adjustment device for the described detector. 3. The indicator plate includes letters indicating the central direction of the monitoring area when the detector is installed on the first installation surface, and the indicator plate is attached to an installation surface perpendicular to the first installation surface. 2. The angle adjusting device for a detector according to claim 1, wherein the angle adjusting device for a detector is characterized in that a letter indicating the direction of the center of the monitoring area when the sensor is in use is specified.