JPH033329B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an automatic flasher that detects ambient brightness and automatically turns on a night lighting load.

[Background technology]

In conventional automatic flashers, the so-called sensor part that detects the illuminance is integrated into the body that is attached to the outer wall surface, and it is possible to remove only the sensor part when repairing, or to install sensors with different sensitivities. There was a problem in that it was very difficult to replace the sensor section, and the sensor section alone could not be easily removed or replaced.

[Purpose of the invention]

The present invention has been provided in view of the above-mentioned points, and an object of the present invention is to provide an automatic flasher in which the sensor part and the body are separated, and the sensor part can be easily and detachably fitted to the body. It is something to do.

[Disclosure of the invention]

Hereinafter, embodiments of the present invention will be explained in detail with reference to the drawings.
In FIGS. 3, 4, and 5, reference numeral 6 denotes a sensor section that detects the surrounding brightness and outputs a detection output, and the contact mechanism section A of this sensor section 6 is shown in FIG. In the figure, 7 is a bridging piece made of a metal plate bent into a U-shape, and one side piece 7 of this bridging piece 7
The lower end of the actuating bimetal plate 1 is fixed to the inner surface of the side piece a, and the lower ends of the compensating bimetal plate 3 and the contact spring plate 2 are overlapped and fixed to the inner surface of the other side piece 7b. A terminal plate 8 is arranged between 7b, and the bridging piece 7 is insert-molded together with the terminal plate 8 on the synthetic resin mounting base 4 to constitute an integrated contact mechanism section A. A fixed contact 9 is provided at the upper end of the terminal plate 8, and is arranged opposite to a movable contact 10 provided at the lower end of the contact spring plate 2 so as to be openable and closable.
In the figure, 5 is a heater. The mounting base 4 also has a light receiving element 2 such as a CdS element that detects illuminance.
0, and both contacts 9 and 10.
A terminal plate 13 that outputs an output is integrally molded. The lower part of each terminal plate 8, 12, 13 protruding from the lower surface of the mounting base 4 is used as a plug blade part 11. This plug blade part 11 has a connecting terminal shape so that it can be connected to other equipment in the future and expanded.
Many types of sensor sections 6 with different sensitivities are available.

Reference numeral 14 denotes a cover for lighting that covers the upper part of the mounting base 4, and a collar part 15 is integrally formed around the lower part of the cover 14 and extends laterally. This flange portion 15 improves waterproofness as will be described later. Attachment bosses 16 for attaching and fixing are integrally formed on the lower surface of both sides of the flange portion 15. FIG. 4 shows the cover 14, in which a recess is formed to cover the contact mechanism section A of the mounting base 4. As shown in FIG. cover 1
4 and the mounting base 4 are fitted in the following manner.
That is, a pair of engagement pieces 17 are formed at the front and rear ends of the green opening of the cover 14.
The cover 14 is fitted to the mounting base 4 by engaging the engagement groove 18 cut into the mounting base 4. The electrical circuit diagram of this sensor section 6 is constructed as shown in FIG. In addition, the light receiving element 2
Since the cover 14 has a single layer structure compared to 0, there is little characteristic deterioration due to aging.

In FIG. 1, reference numeral 21 denotes a blade holder 23 that fits into the blade part 11 of the sensor section 6, and a terminal block 24 that is electrically connected to the blade holder 23 and connected to an electric wire 25 such as an external power line. This body 21 is attached to a construction surface X, for example, an outdoor exterior wall surface. The terminal block 24 is fixed to a mounting rib 26 integrally projecting from the inner wall surface of the body 21 with a tapping screw 29. That is,
One fixed piece 24 of the terminal block 24 and the blade holder 23
a, 23a directly to the body 2 via the mounting rib 26.
1, and the other fixed piece 24b, 2
3b are overlapped and fixed to the mounting rib 26 with tapping screws 29. Further, the end portion of the blade holder 23 is locked and positioned with locking pieces 27 and 28 of the body 21. The blade holder 23 is the sensor part 6
A recess 22 with a bottom opening is formed on the lower surface of the body 21 below the blade holder 23. When the sensor part 6 is inserted into the recess 22 and the blade part 11 is fitted into the blade holder 23, the tip surface of the collar part 15 of the sensor part 6 comes into close contact with the inner peripheral surface of the recess 22. As shown, the flange portion 15 is formed. Therefore, the collar portion 15 of the sensor portion 6 is connected to the body 21.
By coming into close contact with the inner peripheral surface of the recess 22, the recess 22
It can be made waterproof and prevent the intrusion of rainwater and small animals such as insects. Incidentally, the sensor section 6 is screwed onto the blade holder 23 with a screw 19 via a mounting boss 16. This is to prevent theft and to prevent it from falling off due to impact or the like.

FIG. 10 shows the circuit configuration of the sensor section 6, the blade holder 23, and the terminal block 24.
The three terminals of 4 are connected with lead wires respectively,
Furthermore, the terminal block 24 is adapted to be connected to a power source and a lighting load. Now, when the surroundings are bright, the resistance value of the light receiving element 20 becomes low and a current flows to the heater 5, and the actuating bimetal plate 1 is bent by the heater 5, forcing the fixed contact 9 and the movable contact 10. The lights are disconnected, the power is cut off, and the lighting load is turned off. On the other hand, at night, when the resistance of the light receiving element 20 increases, no current flows and the heater 5 does not generate heat, so the operating bimetal plate 1
is not working. Therefore, both contacts 9, 10 are closed and the lighting load is turned on.

6 and 7 show the structure of the blade holder 23, which is made of a never-green material. Blade holder 23
A fixed base 30 is protruded from the upper surface of the fixed base 3.
Blade socket 3 into which three blade socket springs 31 are inserted and fitted
2 are perforated through the top and bottom. Furthermore, fixed pieces 23a and 23b for fixing are integrally provided on both sides of the blade holder 23 in a protruding manner. The blade holder spring 31 has a two-piece shape, and the blade holder spring 31 is inserted into the blade holder 32,
The blade holder spring 31 is bent and fixed on the lower surface of the blade holder 23, and the two blade holder springs 3 are bent and fixed on the upper surface of the blade holder 23.
1 is bent as shown in FIG. 8b. Reference numeral 35 designates a short circuit plate that is conductive and elastic.
1 and 31 are electrically short-circuited. As will be described later, the function of this shorting plate 35 is that when the sensor unit 6 is removed from the body 21, the two blade receiving springs 31, 31 are used to keep the lighting load lit at all times.
This short-circuits the circuit, especially at night. That is, as shown in FIG. 10, when the sensor part 6 is removed from the body 21, the blade holder 2
The blade receiving spring 31 of No. 3 is in an open state, and the lighting load cannot be turned on. Therefore, whenever the sensor section 6 is removed, the double-edged receiving spring 31 is short-circuited by the short-circuit plate 35 so that the lighting load is turned on. The shorting plate 35 is attached to the blade holder 23 as follows. The shorting plate 35 is bent into a substantially Z-shape, and its base is located in a recess 33 with open top and front surfaces at the rear of the blade holder 23, and is screwed into the screw hole 34 with a driving stud 36 from above. and short circuit plate 3
5 is fixed to the blade holder 23 by driving rivets 36.
On the other hand, the tip of the shorting plate 35 is connected to a pin 37 inserted into a pin hole 38 penetrated through the front part of the blade holder 22.
is biased downward. Connect sensor part 6 to body 2
If it is not inserted into the recess 22 of No. 1, see Fig. 8a.
As shown in FIG.
It protrudes downward from the lower surface of the short circuit plate 35 by the urging force of the short circuit plate 35. At this time, as shown in FIG.
The lighting load is turned on by shorting it. Next, the sensor part 6 is inserted into the recess 22 of the body 21.
When the blade part 11 is connected to the blade spring 31 of the blade socket 32, the upper surface of the sensor part 6 pushes up the lower end 37a of the pin 37, and the pin 37 moves as shown in FIG. 9a. Therefore, as shown in FIG. 9b, the shorting plate 35 is pushed up.
is separated from the double-edged receiving spring 31, and the sensor section 6 enters a detection state. In addition, the blade holder spring 31 of the blade holder 23
and the terminal block 24 are connected by a lead wire 39.

FIG. 2 is a cross-sectional view taken along line a-a' shown in FIG.
1 and a lock release push button 42.
is provided. Therefore, the electric wire 25 can be connected with one touch using the quick connection terminal 43.

Therefore, when fixing to the construction surface
As shown in the figure, a circumferential green 21a protruding rearward from the rear circumference of the body 21 is fitted into a circumferential fitting groove 45 of a frame-shaped rubber waterproof packing 44, and the waterproof packing 44 is attached to the body. 21, and the body 21 is brought into contact with the construction surface X via the waterproof gasket 44. Here, on the construction surface
A fixing screw 48, which can be inserted into the screw hole of the nut 47 provided above and below the mounting frame 46 from above and below the body 21 through the waterproof gasket 44,
48 are screwed together to fix the body 21.
The waterproof packing 44 has an opening 44a corresponding to the opening 46a of the mounting frame 46, and the openings 46a, 4
4a to the conductor insertion ports 49, 49 of the terminal block 24.
It is possible to connect an electric wire 25 such as a power line to... Incidentally, since the sensor section 6 is a plug-in type, the sensor section 6 can be inserted arbitrarily.

In FIG. 11, a box 50 is provided in the construction plane X, and the body 21 is attached to the box 50. Basically the same as above.
Attachment frame 4 to box 50 buried in construction surface
6 and screwing the box screw 51 onto the tongue piece 52, the mounting frame 46 is fixed to the box 50. Then, the body 21 is fixed to the mounting frame 46 by screwing the fixing screw 48 into the mounting frame 46 through the rubber gasket 53 from the front side of the body 21.

FIG. 12 shows the case of exposure work without using a box. This is also the same as described above, and the mounting frame 46 is fixed to the construction surface X with screws 53, and the body 21 is similarly fixed to the mounting frame 46.

〔Effect of the invention〕

As described above, the present invention includes a light receiving element that detects ambient illuminance, a contact mechanism section that opens and closes a contact based on the output of the light receiving element, and a plug blade section that electrically connects the contact mechanism section and the light receiving element with the outside. A blade holder that is removably fitted to the blade part of the sensor part, and a terminal block that is electrically connected to the blade holder and connected to an external lighting load or power source. A body is formed which is placed inside and attached to the construction surface via a waterproof gasket, the blade holder is placed in a recess that opens on the bottom surface of the body, and the blade part is provided on the top surface of the sensor part. In addition, a collar portion is formed on the circumferential surface of the upper part of the sensor portion below the protruding portion of the plug blade portion, and is in close contact with the inner circumferential surface of the recess above the opening surface of the recess. The sensor part is provided with a blade part, and a blade holder that removably fits into the blade part is provided in a recess opened on the lower surface of the body, so that the sensor part can be attached to the construction surface. An automatic flasher can be easily configured by fitting the blade part and the blade holder into the recess of the body, and since the sensor part can be easily removed from the body, it is easy to repair the sensor part. It has the advantage that it is easy to change the sensor part or replace it with a sensor part with a different sensitivity, making it easier to develop products in the future. Furthermore, since the electrical connection between the sensor part and the blade holder is provided in a recess that opens on the underside of the body, there is an advantage that the electrical connection is not directly exposed to wind and rain. .
In addition, even if rainwater, etc. tries to blow in through the opening of the recess provided on the lower surface of the body, the rainwater, etc. is blocked by the brim that is in close contact with the inner circumferential surface of the recess, and the electrical This has the effect of almost completely blocking rainwater from entering the connection. In particular, since the flange is in close contact with the inner circumferential surface of the recess above the opening surface of the recess, the area from the opening surface of the recess to the flange acts as a drain, allowing water to flow along the outer periphery of the body. Rainwater and the like that reach the lower end of the body are not sucked up into the electrical connections due to capillary action.

[Brief explanation of drawings]

Figures 1a and b are a front view and a bottom view of the embodiment of the present invention, Figure 1c is a cutaway side view showing the installation state of the same as above, Figure 1d is a broken rear view of the same as above, and Figure 2 is the same as above. Fig. 3 is a perspective view of the sensor section of the above, and Fig. 4 a to d are a plan view, a cutaway front view, a bottom view, and a cutaway of the cover of the sensor section of the above. A side view, FIGS. 5a to 5c are front views, side views, and bottom views of the contact mechanism section of the sensor section, FIG. 6 is an exploded perspective view of the blade holder, and FIGS. 7a to d are the same as above. The plan view, sectional view, bottom view, and side view of the blade holder shown in FIGS. b is a cross-sectional view and a front view showing the state in which the sensor part is fitted into the same body, FIG. 10 is a circuit diagram of the same as above, and FIGS.
The figure shows the same construction method as above. 6 is a sensor part, 11 is a blade part, 20 is a light receiving element, 21 is a body, 22 is a recess, 23 is a blade holder,
24 is a terminal block, 44 is a waterproof gasket, and X is a construction surface.

Claims (1)

[Claims] 1. Forms a sensor section consisting of a light-receiving element that detects the ambient illuminance, a contact mechanism section that opens and closes a contact based on the output of the light-receiving element, and a plug blade section that electrically connects the contact mechanism section and the light-receiving element with the outside. A waterproof gasket is constructed by arranging a blade holder that removably fits into the plug blade of the sensor part and a terminal block that is electrically connected to the blade holder and connected to an external lighting load or power source. form a body that is attached to the construction surface through An automatic flasher comprising a collar portion formed on a circumferential surface below a protruding portion of the plug blade portion and tightly contacting an inner circumferential surface of the recess above an opening surface of the recess.