JPH0411322Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to the structure of an automatic flasher that detects ambient brightness and automatically turns on a night lighting load.

[Background technology]

In conventional automatic flashers, when the sensor part that detects the surrounding brightness is attached to the body, a separate drip-proof cover is used to make it waterproof. Another problem was that the drip structure required a separate member and was not completely drip-proof.

[Purpose of invention]

The present invention has been proposed in view of the above-mentioned points, and is intended to prevent water and insects from entering from the fitting part in a so-called plug-in tamp in which a sensor part is fitted into a body. The present invention provides a structure for an automatic flasher.

[Disclosure of invention]

Hereinafter, embodiments of the present invention will be described 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 includes 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 of the terminal plates 8, 12, 13 protruding from the lower surface of the mounting base 4 serves as a plug blade part 11.

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 on the front and rear edges of the opening edge of the cover 14, and the engagement pieces 1
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 FIG. 1, reference numeral 21 denotes a body in which a bulging portion 50 that bulges forward is formed at the upper front surface, a blade holder 23 that fits with the plug blade part 11 of the sensor part 6, and an electrical connection between the blade holder 23 and the The terminal block 24 is connected to the terminal block 24 and is connected to the electric wire 25 such as an external power line.
It is built in and attached to a construction surface X, for example, an outdoor exterior wall surface. Terminal block 24 is body 2
It is fixed to a mounting rib 26 integrally projecting from the inner wall surface of 1 with a tapping screw 29. That is, one fixed piece 24a of the terminal block 24 and the blade holder 23,
23a is directly screwed and fixed to the body 21 via the mounting rib 26, and the other fixed piece 24b, 23b
They are overlapped and fixed to the mounting rib 26 with tapping screws 29. Further, the end of the blade holder 23 is positioned by being engaged with the body 21 by engagement pieces 27 and 28. The blade holder 23 is fitted and electrically connected to the blade part 11 of the sensor section 6, and the lower surface of the bulge 50 below the blade holder 23 is open. When the sensor part 6 is inserted into the opening 22 and the plug blade part 11 is fitted with the blade holder 23, the bulging part 5
The flange portion 15 is formed such that the tip end surface of the flange portion 15 of the sensor portion 6 is in close contact with the inner circumferential surface of the sensor portion 6. Therefore, the collar portion 1 of the sensor portion 6
5 is in close contact with the inner peripheral surface of the bulging portion 50, it is possible to prevent rainwater from entering through the opening 22 and small animals such as insects from entering. In addition, the sensor part 6 is attached to the screw 1.
At 9, it is screwed onto the blade holder 23 via a mounting boss 16. This is to prevent theft and to prevent it from falling off due to impact or the like. Furthermore, the structure is such that the upper front surface of the body 21 bulges forward and the sensor section 6 is detachably inserted into the opening 22 formed on the lower surface of the bulge 50, so that the sensor section 6 does not protrude. In addition to being able to be inserted visually into the
When inserting the sensor section 6 into the opening 22, the lower front surface of the body 21 acts as a guide surface that guides the sensor section 6 straight into the opening 22, so there is an advantage that the sensor section 6 can be easily inserted.

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, the resistance of the light-receiving element 20 increases and 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 an insulating 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 conductive and elastic shorting plate, and the center portion of this shorting plate 35 makes elastic contact between the bent portions 31a, 31a of the blade receiving spring 31, electrically connecting the double-edged receiving springs 31, 31. This causes a short circuit.
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 and 3 are used to keep the lighting load lit at all times.
1 is short-circuited, especially at night. That is, as shown in FIG. 10, when the sensor section 6 is removed from the body 21, the blade holder spring 31 of the blade holder 23 becomes open, making it impossible to light up the lighting load. 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 whose top and front surfaces are open at the rear of the blade holder 23, and is screwed into the screw hole 34 with a driving stud 36 from above. However, the shorting plate 35 is fixed to the blade holder 23 by driving rivets 36. On the other hand, the tip of the short circuit plate 35 urges the pin 37 inserted into the pin hole 38 penetrated through the front part of the blade holder 23 downward. When the sensor part 6 is not inserted into the opening 22, the lower end 37a of the pin 37 projects downward from the lower surface of the blade holder 23 due to the biasing force of the shorting plate 35, as shown in FIG. 8a. At this time, as shown in FIG. 8b, the shorting plate 35 short-circuits the double-edged receiving springs 31, 31 as described above.
I am trying to turn on the lighting load. Next, when the sensor part 6 is inserted into the opening 22 and the blade part 11 is connected to the blade receiving spring 31 of the blade socket 32, the upper surface of the sensor part 6 pushes up the lower end part 37a of the pin 37, and the pin 37 pushes up the shorting plate 35 as shown in FIG. 9a, and as a result, the shorting plate 35 separates from the double-edged receiving spring 31 as shown in FIG. 9b.
The sensor unit 6 enters a detection state. The blade holder spring 31 of the blade holder 23 and the terminal block 24 are connected to the lead wire 3.
Connected at 9.

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, when fixing to the construction surface
As shown in the figure, a peripheral edge 21a protruding rearward from the rear peripheral part of the body 21 is fitted into a peripheral fitting groove 45 of a frame-shaped rubber waterproof packing 44, and the peripheral edge 21a is inserted through the waterproof packing 44. It is attached to the back surface of the body 21, and the body 21 is brought into contact with the construction surface X via the waterproof gasket 44. Here, a mounting frame 46 is provided on the construction surface
The body 21 is fixed by screwing together fixing screws 48, which can be inserted from below through the waterproof gasket 44. The waterproof gasket 44 has an opening 44a corresponding to the opening 46a of the mounting frame 46, and this opening 4
6a, 44a to the conductor insertion port 4 of the terminal block 24
It is possible to connect an electric wire 25 such as a power line to the terminals 9, 49, . . . Incidentally, since the sensor section 6 is a plug-in type, the sensor section 6 can be inserted arbitrarily.

[Effects of the invention] As described above, the present invention includes a light receiving element that detects the ambient illuminance, a contact mechanism that opens and closes the contact based on the output of the light receiving element, and an electrical connection between the contact mechanism and the light receiving element with the outside. The sensor part includes a blade part that fits into the blade part of the sensor part, and a blade holder that fits into the blade part of the sensor part, and a blade holder that is electrically connected to the blade holder and connected to an external lighting load or power source. A terminal block is housed in a bulge formed at the upper part of the front surface, the body has a back side that is attached to a construction surface, and an opening is formed on the lower surface of the bulge of the body into which the sensor part is removably inserted, Since the outer periphery of the sensor part is provided with a flange that comes into close contact with the inner periphery of the bulging part, when the sensor part is inserted into the opening, the outer periphery of the flange of the sensor part is aligned with the inner periphery of the bulging part. The sensor part and the body are waterproofed in close contact with the surface, which prevents rainwater from entering through the opening and small animals such as insects. There are advantages to being able to do so. Furthermore, the front upper part of the body bulges forward and the sensor part is removably inserted into the opening formed on the bottom of this bulge, so the collar of the sensor part does not have to be made of rubber or the like. In addition to being able to obtain a drip-proof effect even when
The sensor part can be inserted visually without protruding, and when inserting the sensor part into the opening, the front lower part of the body acts as a guide surface to guide the sensor part straight into the opening, so the sensor part can be inserted easily. It also has the advantage of being easy to insert and attach. Furthermore, since the sensor section can be removably inserted into the body, there is an advantage that a sensor section with different characteristics can be replaced and connected to one type of body.

[Brief explanation of drawings]

Figures 1a and b are front and bottom views of the embodiment of the present invention, Figure 1c is a cutaway side view showing the installation state of the above, Figure 1d is a broken rear view of the same, and Figure 2 is the same as the 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 sectional view and a front view showing a state in which the sensor section is fitted into the body of the same as above, and FIG. 10 is a circuit configuration diagram of the same as above. 6 is a sensor part, 11 is a plug blade part, 15 is a collar part, 20 is a light receiving element, 21 is a body, 22 is an opening, 23 is a blade holder, 24 is a terminal block, 50 is a bulge part, X is a construction surface shows.

Claims (1)

[Scope of utility model registration request] Equipped with a sensor section consisting of a light receiving element that detects the ambient illuminance, a contact mechanism section that opens and closes the 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. At the same time, a blade holder that fits with the plug blade part of the sensor part and a terminal block that is electrically connected to the blade holder and connects to an external lighting load or power source are installed in the bulge formed at the top of the front surface. It has a body whose back side is attached to the construction surface, an opening into which the sensor section is removably inserted is formed on the lower surface of the bulge of the body, and the inner peripheral surface of the bulge is formed on the outer periphery of the sensor section. The structure of an automatic flasher consists of a collar that is in close contact with the surrounding area.