JP2675796B2 - Human body detection switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention has a heat ray sensor, and when an intruder is present within the detection area of the heat ray sensor, human body detection capable of obtaining a contact output of no voltage or a voltage. It is about switches.

[Prior Art] Generally, this type of human body detection switch is used, for example, to automatically turn on a light when a toilet is entered, or to automatically operate a ventilation fan (for example, , Japanese Utility Model Publication No. 62-76227).

[Problems to be Solved by the Invention] When installing and constructing such a human body detection switch, it is necessary to set the detection area to suit the purpose of use, but only after the load is actually connected. It was not possible to confirm how the detection area was set.

Also, when the detection area is narrower than the surrounding space, it is necessary to approach the human body switch and enter the detection area so that contact output can be obtained. Sometimes I couldn't turn on the lights because I didn't know the location.

An object of the present invention is to solve the above-mentioned problems, and it is possible to perform an operation check even when a load is not connected, and to provide a human body detection switch that allows the placement location to be known even in the dark. It is the one we are trying to provide.

[Means for Solving the Problems] The invention according to claim 1 is directed to a case in which locking claws inserted into holding holes provided in a mounting frame for a wiring device are projecting from both side edges, and a front surface of the case. A rotating frame, which is rotatable and is installed so that the heat ray sensor rotates integrally, and a contact output is generated when an intruder is detected in the detection area of the heat ray sensor formed in front of the case. A heat ray sensor is provided on the rotating frame, which includes a circuit portion and a display element that lights up while the contact output is on, and a light transmitting hole that transmits light from the display element faces the front surface of the case. A lens plate which is arranged in front of and which sets a detection area is mounted so as to rotate together with the rotating frame.

According to a second aspect of the present invention, there is provided a case in which locking claws, which are inserted into holding holes provided in a mounting frame for a wiring device, project from both side edges, and a heat ray sensor which is rotatable with respect to a front surface of the case. A rotating frame that is installed so as to rotate integrally, a circuit unit that generates contact output when an intruder is detected in the detection area of the heat ray sensor formed in front of the case, and at least the contact output is turned off. A position display element that lights up during a period is formed, and a light transmitting hole that transmits light from the position display element is formed so as to face the front surface of the case, and the rotating frame is arranged in front of the heat ray sensor. The lens plate that sets the detection area is mounted so as to rotate integrally with the rotation frame.

[Operation] According to the configuration of the invention of claim 1, since the heat ray sensor is mounted so as to rotate integrally with the rotating frame in the rotating frame that is rotatable with respect to the front surface of the case, it is installed. The detection area can be easily adjusted later according to the purpose of use. here,
Since the display element that lights up according to the ON period of the contact output is provided so as to face the front side of the case, the setting state of the detection area can be set even when the load is not connected when adjusting the detection area after installation. It can be easily confirmed. Moreover, since the case can be attached to the mounting frame for the wiring device, the mounting frame for the wiring device can be diverted and construction can be performed, and there is no need to newly design a dedicated mounting device, and the equipment cost can be reduced. In addition to reducing inventory costs, there are few new parts to learn about construction technology, and education costs can be reduced. Particularly, by mounting the lens plate, which is arranged in front of the heat ray sensor and sets the detection area, on the rotating frame so as to rotate integrally with the rotating frame, the detection area can be formed by a relatively small lens plate. Since it can be set, it is possible to use a relatively small case that can be attached to the mounting frame as the case, and since the lens plate rotates together with the rotating frame, the detection area The direction of the detection area can be adjusted without changing the shape of the.

According to the configuration of the second aspect of the invention, as in the first aspect of the invention, the heat ray sensor is mounted on the rotatable frame rotatable with respect to the front surface of the case so as to rotate integrally with the rotatable frame. Therefore, the detection area can be easily adjusted according to the purpose of use after installation, and since the case can be attached to the mounting frame for wiring equipment, the mounting frame for wiring equipment can be diverted. Since it can be installed, there is no need to newly design a dedicated mounting device, which leads to a reduction in equipment costs and inventory costs, and there are few new parts to learn about construction technology, which can reduce education costs. it can.
Furthermore, at least the position display element that lights up when the contact output is in the off period is provided so as to face the front surface of the case, so that the presence location can be indicated even in the dark during the off period. Further, similarly to the invention of claim 1, the lens plate which is arranged in front of the heat ray sensor and sets the detection area is attached to the rotating frame so as to rotate integrally with the rotating frame. Since the detection area can be set with a relatively small lens plate, it is possible to use a relatively small one that can be attached to the mounting frame as a case, and the lens plate can be used as a rotating frame. Since they rotate integrally, the direction of the detection area can be adjusted without changing the shape of the detection area.

[Example 1] As shown in Figs. 1 to 6, a case 1 is formed by connecting a body 10 made of a synthetic resin molded product and a cover 20 to each other. The mounting portion is formed so as to have a size corresponding to that of a three-square module and can be mounted on a metal mounting frame or a synthetic resin mounting frame defined by the industrial association standards of the wiring equipment industry association. These mounting frames are adapted to be mounted on an embedded box such as a switch box. The mounting portions are formed on both side surfaces of the cover 20, respectively.
A pair of locking holes 21 perforated on both left and right sides of 20
The projection is inserted by inserting a protruding piece of a metal mounting frame into the mounting frame.
4 are inserted into holding holes formed in the synthetic resin mounting frame. One hook 23 projects from each of the left and right edges and the rear edge of the lower surface of the cover 20, and the hook 23 fits into a fitting hole 11 formed in the peripheral wall of the body 10 from the inside of the peripheral wall of the body 10. Then, the body 10 and the cover 20 are joined.

The inside of the body 10 is separated by a partition rib 12 into a circuit portion storage chamber 13 and a pair of terminal storage chambers 14, and a pair of holding ribs 15 project on the inner peripheral surfaces of the left and right side walls of the circuit portion storage chamber 13. The left and right ends of the rotary frame support plate 16 are held in the grooves between the holding ribs 15. The rotating frame support plate 16 is formed in a substantially T-shape in which the left and right middle portions protrude upward, and a step 16b is formed on a side edge of the vertical piece. A turning frame support rib 17 is formed on the inner peripheral portion of the rear wall of the body 10 so as to face the turning frame support plate 16. The upper surfaces of the rotation frame support plate 16 and the rotation frame support rib 17 are arc-shaped rotation surfaces 16a and 17a, each of which has a concave central portion.
The rotation frame 30 is rotatably supported between the upper surfaces of the rotation frame support plate 16 and the rotation frame support rib 17. Body 10
Inside, a first printed circuit board 40 on which a power supply circuit unit is mounted is mounted. The printed circuit board 40 has cutouts 41a and 41b that expose the rotation surface 16a of the rotation frame support plate 16 and the rotation surface 17a of the rotation frame support rib 17, respectively. The printed board 40 is placed on the partition ribs 12, the step 16b of the rotating frame support plate 16, and the like, and a space is formed between the inner bottom surface of the body 10 and the printed board 40, The circuit components mounted on the printed board 40 are housed in this space. In particular, the main circuit components on the printed circuit board 40 will be placed in the portion corresponding to the circuit section storage chamber 13. A boss 18 protrudes from the inner bottom surface of the body 10 in the circuit portion storage chamber 13, and a second printed circuit board 42 is held by a fixing screw 19 screwed to the boss 18. A fixing notch 43 into which the fixing screw 19 is inserted is formed on the periphery of the printed circuit board 42, and a variable resistor VR having a slidable handle 72 is mounted on the printed circuit board 42. A cutout portion 41c from which the handle 72 of the variable resistor VR protrudes is formed on the periphery of the first printed circuit board 40.

The terminals 50a to 50d are installed in the terminal storage chamber 14. Terminal 50
a to 50d have a terminal plate 51, a locking spring 52 having a spring force toward the terminal plate 51, and a release button 53 that can press the locking spring 52 against the spring force, and serve as a connecting terminal. It has a well-known structure. A pair of terminal plates 51 and a pair of locking springs 52 are housed in one terminal storage chamber 14, and the release button 53 is disposed so as to be shared by both locking springs 52. A wire insertion hole 54 is formed in the bottom wall of the body 10 corresponding to each locking spring 52, and a part of the release button 53 is exposed so that the locking spring 52 can be secured by a jig such as a screwdriver. The release button 53 can be pressed against the spring force. Here, the terminals 50a to 50d are configured so that a single copper wire having a diameter of 1.6 or 2.0 for general house wiring can be connected thereto. A connection piece 54 is provided at one place of the terminal plate 51 so as to project upward, and the connection piece 54 is soldered and fixed to the printed circuit board 40 to connect the terminals 50a to 50d and the printed circuit board.
Electrical connection is made with the circuit section on 40.

The rotating frame 30 is formed in a disk shape and is formed in a frame shape in which a pair of rotating plates 31a and 31b facing each other apart from each other are connected by a pair of parallel side frames 32, and a pyroelectric sensor as a heat ray sensor. A third printed circuit board 44 on which the element P and its peripheral circuit section are mounted is mounted. The rotating plates 31a and 31b are the above-mentioned rotating surfaces 17
The rotation frame 30 can be rotated with respect to the body 10 by being placed on a and 16a. A fixing notch 45 is formed on one side of the printed circuit board 44, and a fixing protruding piece 46 protrudes from one side opposite to this one side. Rotating frame
One of the rotating plates 31a has a notch 3 for fixing along the inner surface.
A boss 33 corresponding to 1a is formed, and a support hole 34 in which the fixing projection 46 is fitted is formed on the other rotating plate 31b. Therefore, the fixing projection 46 is fitted into the support hole 34,
Fixing screw consisting of tapping screw through fixing notch 45
By screwing the 35 to the boss 33, the printed circuit board 44 is fixed to the rotating frame 30. One rotating plate 31
A handle 36 that is operated when adjusting the angle of the rotating frame 30 with respect to the body 10 is provided on the peripheral surface of a. Further, the stoppers 37a, 37 for restricting the rotation range of the rotation frame 30 by contacting the inner peripheral surface of the cover 20 on the outer surfaces of both the rotary plates 31a, 31b.
Each b is projected.

The above-described printed circuit boards 40, 42, and 44 are connected to each other via jumper wires 47. A jumper line 47 connecting the first printed circuit board 40 and the second printed circuit board 42 in the body 10 and the third printed circuit board 44 in the rotating frame 30 is formed by a notch formed in the first printed circuit board 40. It is designed to be inserted into the part 41a. In addition, the printed circuit board in the rotating frame 30
Jumper wire 47 connecting 44 to other printed circuit boards 40 and 42
Is set to have a margin larger than the rotatable length of the rotating frame 30 so that the rotating frame 30 does not break when rotating. Insulation sheet 48 on the top surface of the printed circuit board 40
Are provided to prevent short circuit with the circuit portion of the printed circuit board 44.

By the way, the pyroelectric element P mounted on the printed circuit board 44
Are arranged between the two side frames 32 such that the upper surface side in FIG. 1 becomes a detection surface, and in front of the detection surface of the pyroelectric element P,
A lens plate 60 for setting a detection area is provided.
The lens plate 60 is a flat Fresnel lens made of a material through which infrared light is transmitted, such as high-density polyethylene, and is formed in a rectangular shape, and a pair of engaging hooks 61 protrude from both side edges. Reinforcing ribs 62 are formed along both side edges provided with the engaging hooks 61, and press-fitting protrusions 63 are formed at each corner of the lens plate 60. This lens plate 60 is a rotating frame.
The peripheral portion of the lens plate 60 is placed on a supporting rib 39 formed along the peripheral edges of the rotating plates 31a and 31b of the rotating plate 30 and a rotating frame.
By engaging the engaging hook 61 with the engaging recess 38 formed in the lower portion of the inner peripheral surface of the both side frames 32 of 30, it is held in the rotating frame 30 in a curved shape like a semi-cylindrical shape. There is. The lens plate 60 is composed of a plurality of regions so as to form a desired detection area. It goes without saying that the focal point for each area is set on the detection surface of the pyroelectric element P. Here, a range of about 90 ° in a plane substantially orthogonal to the rotation axis is set as a detection area. Since the detection area is controlled by the lens plate 60 in this manner, when a product having a different detection area is obtained, it is sufficient to replace only the lens plate 60 and the design can be economically changed. Further, as described above, since the flat lens plate 60 is curved, it is easy to manufacture,
Also in that respect, the cost can be reduced.

On the upper surface of the cover 20, a pair of rotating frame holding plates 24a, 24b that respectively hold the rotating plates 31a, 31b of the rotating frame 30 are protruded. Each of the rotating frame holding plates 24a and 24b has a peripheral wall, and the rotating plates 31a and 31b rotate along the inner peripheral surface of the peripheral wall. That is, the rotating plates 31a, 31b are sandwiched between the inner peripheral surfaces of the peripheral walls of the rotating frame holding plates 24a, 24b and the rotating surfaces 16a, 17a of the rotating frame support plate 16 and the rotating frame holding ribs 17. That is, it turns in the form of a circle. As described above, the rotation range of the rotation frame 30 is the stopper 37a,
The 37b is regulated by abutting on the inner peripheral surface of the cover 20, and its range is set to about 40 ° to the left and right. That is, since the detection area in the state where the rotary frame 30 is fixed is approximately 90 °, the detection area can be adjusted in the range of 170 ° by rotating the rotary frame 30. On the front surface of the cover 20, a handle insertion hole 25 through which a knob 71 of a switch SW, which will be described later, is exposed, a light receiving hole 26 through which a light receiving element PD is exposed, and a light emitting diode are provided in a portion different from the rotating frame holding plates 24a, 24b. The display holes 27 through which the display elements LD are exposed are formed. A nameplate 28 is provided at a portion straddling the handle insertion hole 25, the light receiving hole 26, and the display hole 27. here,
The nameplate 28 has a through hole 28a at a position corresponding to the handle insertion hole 25.
And light transmitting portions 28b and 28c at portions corresponding to the light receiving hole 26 and the display hole 27, respectively. A handle exposure hole 29 through which a handle 72 of the variable resistor VR is exposed is formed at the center of one side surface of the cover 20. This part is the part covered by the flash plate when the case 1 is mounted on the mounting frame and the JIS standard flash plate is arranged on the front side of the case 1. To prevent them from touching.

A lens cover made of a synthetic resin molded product that is transparent to infrared rays is provided between the rotating frame holding plates 24a and 24b in the cover 20.
64 is installed. The lens cover 64 is formed in a semi-cylindrical shape, and a pair of locking pieces 65 project from both side edges thereof. As shown in FIG. 5, the locking piece 65 is locked to the inner peripheral surface of the cover 20 and the lens cover 64 is fixed to the cover 20. The lens cover 64 is arranged so as to be substantially in close contact with the outer surface of the lens plate 60, so that it is possible to prevent the lens plate 60 from being directly touched by the hand and to prevent a change in detection sensitivity due to dirt on the lens plate 60. I have to. Here, since the lens plate 60 is a Fresnel lens, it is thin and easy to bend, and it is difficult to wipe off stains, but the surface of the lens cover 64 is smooth, stains do not easily adhere, and it is hard. Some dirt can be easily wiped off, and changes in detection sensitivity can be prevented. Further, since the lens cover 62 only needs to transmit infrared rays, it can be formed of a material that is opaque to visible light. By covering the rotating frame 30 with this lens cover 62, It is possible to prevent the user from feeling psychological anxiety, because the circuit portion inside the rotating frame 30 is not visible from the outside.

The circuit section is constructed as shown in FIG. The above-mentioned four terminals 50a to 50d constitute an input terminal of the commercial power supply and an output terminal in which the contact r of the relay Ry is inserted between the commercial power supply and the terminal. The commercial power supply is rectified and smoothed by the power supply circuit 81 and stabilized by the constant voltage circuit 82. The DC power thus obtained is supplied to the processing circuit IC to which the pyroelectric element P is connected. The processing circuit IC is configured, for example, by adding peripheral parts to an integrated circuit marketed under the name CF1651C or the like, and when infrared rays emitted from the human body are detected by the pyroelectric element P, the output terminal OUT The output level is configured to be "H" for a certain period of time. This time can be changed by adjusting the variable resistor VR. This adjustment range is set, for example, from about 10 seconds to about 6 minutes. Further, the enable terminal ENA is connected to the light receiving element PD made of CdS, and the light receiving element P
The operation of the processing circuit IC is set to stop when the amount of received light at D increases. Output terminal OUT of processing circuit IC
Is connected to the relay control circuit 83 via the switch SW. The relay control circuit 83 is configured by connecting a series circuit of a switch element Q formed of a transistor, a relay coil L, and a display element LD formed of a light emitting diode to a power supply circuit 81, and a control terminal of the switch element Q is "H". While
The contact r of the relay Ry is closed and the display element LD is turned on. The switch SW is a slide switch having three contacts, and the control terminals of the relay control circuit 83 are set to “H” and “L”.
Set to either "and the output terminal of the processing circuit IC
It is possible to select three states, one for connecting to OUT. Therefore, when the switch SW is operated to manually set the control terminal of the relay control circuit 83 to either "H" or "L", the contact r is turned on or off accordingly. . Further, if the state where the control terminal of the relay control circuit 83 is connected to the output terminal OUT of the processing circuit IC is selected, when the pyroelectric element P detects a human body, the contact r is turned on for a certain period of time.

Here, power supply circuit 81, constant voltage circuit 82, relay control circuit
83, switch SW, light receiving element PD are the first printed circuit board
The variable resistor VR and the capacitor C are mounted on the second printed circuit board 42, and the processing circuit IC is mounted on the third
Mounted on the printed circuit board 44 of

[Embodiment 2] In this embodiment, as shown in FIG. 8, a light transmitting portion 28d for display corresponding to the position display element LE is formed on the nameplate 28. It goes without saying that the case 1 has a display hole corresponding to the translucent portion 28d.

The position display element LE is, for example, as shown in FIG.
In the case of a neon lamp connected via a resistor R between both ends of a contact r of a relay Ry, and a lighting fixture such as a fluorescent lamp is used as a load, a preheating current of the filament when the contact r is opened. And so on.
When the contact r is closed, the position display element LE goes out. Display element
It is desirable to set the display color of the LD and the position display element LE different, and set the display element LD as red and the position display element LE as green. Although the position display element LE is a neon lamp here, it goes without saying that it may be another light emitting element such as a light emitting diode.

With this configuration, the position display element can be used even in a dark place.
If you search for the light from the LE and bring it closer, it will enter the detection area, further improving usability.

[Effect of the invention] As described above, the invention of claim 1 is provided with respect to the case in which the locking claws inserted into the holding holes provided in the mounting frame for the wiring device are projected on both side edges and the front surface of the case. A rotating frame that is rotatable and has a heat ray sensor installed so as to rotate integrally, and a contact output is generated when an intruder is detected in the detection area of the heat ray sensor formed in front of the case. A circuit part and a display element that lights up while the contact output is on,
A light-transmitting hole for transmitting light from the display element is formed so as to face the front surface of the case, and a lens plate, which is arranged in front of the heat ray sensor and sets a detection area, is integrally formed with the rotating frame. It is mounted so that it can be moved, and the heat ray sensor is mounted on a rotating frame that can rotate with respect to the front of the case so that it can rotate together with the rotating frame. The detection area can be easily adjusted according to the purpose.
Since the display element that lights up according to the ON period of the contact output faces the front side of the case, the display element lights up even when the load is not connected when adjusting the detection area after installation. -There is an advantage that the setting state of the detection area can be easily confirmed by checking the off state, and as a result, the setting work of the detection area becomes easy. Moreover, since the case can be attached to the mounting frame for the wiring device, the mounting frame for the wiring device can be diverted and construction can be performed, and there is no need to newly design a dedicated mounting device, and the equipment cost can be reduced. It also has the effect of reducing the cost of inventory and the cost of education because there are few new parts to learn about construction technology. In addition, the lens plate that is placed in front of the heat ray sensor and sets the detection area is attached to the rotation frame so as to rotate integrally with the rotation frame, so that the detection area is relatively small. Can be set, there is an advantage that it is possible to use a relatively small thing that can be attached to the mounting frame as a case,
Moreover, since the lens plate rotates integrally with the rotating frame, the direction of the detection area can be adjusted without changing the shape of the detection area.

As described above, the invention according to claim 2 is rotatable with respect to the case in which the locking claws inserted into the holding holes provided in the mounting frame for the wiring device are projected on both side edges and the front surface of the case. And a circuit frame that generates a contact output when an intruder enters the detection area of the heat ray sensor formed in front of the case, and a rotating frame that is installed so that the heat ray sensor integrally rotates. A position display element that is turned on when the contact output is in the off period, and a light transmitting hole for transmitting light from the position display element is formed so as to face the front surface of the case. And a lens plate for setting the detection area is mounted so as to rotate integrally with the rotation frame, and is rotatable with respect to the front surface of the case as in the invention of claim 1. Attach the heat ray sensor to the rotating frame so that it can rotate together with the rotating frame. Since there can easily adjust the detection area in accordance with the intended use after installation, moreover,
Since the case can be attached to the mounting frame for wiring equipment, the mounting frame for wiring equipment can be diverted for construction, and there is no need to newly design a dedicated mounting device, equipment cost and inventory. As well as reducing costs,
With regard to construction technology, there is little new learning, and educational costs can be reduced. Furthermore, since the position display element that lights up at least when the contact output is in the off period is provided so as to face the front surface of the case, since the position display element lights up during the off period, it is possible to indicate the location even in the dark. Therefore, it is possible to enter the detection area by approaching the place where the position display element emits light, and the switch can be easily operated even when the surrounding space is wider than the detection area.

In addition, similarly to the invention of claim 1, by mounting the lens plate arranged in front of the heat ray sensor and setting the detection area on the rotating frame so as to rotate integrally with the rotating frame, Since the detection area can be set with a relatively small lens plate, there is an advantage that it is possible to use a relatively small lens plate that can be attached to the mounting frame as a case. Since it rotates integrally with the moving frame, the direction of the detection area can be adjusted without changing the shape of the detection area.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a longitudinal sectional view of the same, and FIG. 4 is a front view of the same with a cover removed, 5 is a horizontal cross-sectional view of the same as above, FIG. 6 is a horizontal cross-sectional view of a state in which the rotary frame is rotated, FIG. 7 is a circuit diagram of a circuit portion used in the same, and FIG. And FIG. 9 is a circuit diagram of a circuit portion used in the above. 1 ... Case, 22 ... Locking claw, 28b ... Translucent part, 28d ... Translucent part,
30 ... Rotating frame, 60 ... Lens plate, LD ... Display element, LE ... Position display element, P ... Pyroelectric element.

Continuation of the front page (56) Reference JP-A-58-94797 (JP, A) JP-A-61-195021 (JP, A) JP-A-62-277529 (JP, A) Practical application Sho-61-152931 (JP , U) Actual development Sho 59-119744 (JP, U)

Claims (2)

(57) [Claims] 1. A case in which locking claws inserted into holding holes provided in a mounting frame for wiring equipment project from both side edges, and a heat ray sensor integrally rotatable with respect to the front surface of the case. A rotating frame that is installed to rotate, a circuit section that generates contact output when an intruder is detected in the detection area of the heat ray sensor formed in front of the case, and the period when the contact output is on A display element that is lit inside is formed, and a light transmitting hole that transmits light from the display element is formed so as to face the front surface of the case, and the rotating frame is arranged in front of the heat ray sensor to set a detection area. A human body detection switch, wherein a lens plate is mounted so as to rotate together with a rotating frame. 2. A case in which locking claws inserted into holding holes provided in a mounting frame for wiring equipment project from both side edges and a heat ray sensor which is rotatable with respect to the front surface of the case. A rotating frame that is installed to rotate, a circuit section that generates contact output when an intruder is detected in the detection area of the heat ray sensor formed in front of the case, and at least the contact output is in the off period. A position display element that lights up at a certain time is formed, and a light transmitting hole that transmits light from the position display element is formed so as to face the front surface of the case. A human body detection switch characterized in that a lens plate for setting is attached so as to rotate integrally with a rotation frame.