JP2793199B2 - Human body detection switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention includes a human body detection sensor such as a heat ray sensor, and when a person is detected based on the output of the human body detection sensor, a detection output for load control is obtained. The present invention relates to a human body detection switch.

2. Description of the Related Art Generally, a human body detection switch of this type is used, for example, to turn on a light when a visitor is present at an entrance or to automatically turn on a light when entering a toilet. .

When installing and constructing such a human body detection switch, it is necessary to set the detection area so as to meet the purpose of use. In order to satisfy this requirement, a human body detection sensor such as a heat ray sensor is mounted on a rotatable rotating frame with respect to the case so that the detection direction is variable,
It has been considered to dispose a filter for controlling the shape of the detection area in front of the detection surface of the human body detection sensor.

As a filter, a Fresnel lens and a lens cover that covers the Fresnel lens are generally used.

[Problem to be Solved by the Invention] According to the above-described conventional configuration, three members of the rotating frame, the Fresnel lens, and the lens cover are required as members for adjusting the detection area. There were problems that the number of points was increased, the workability of the assembly work was poor, and the cost was increased. Further, since the Fresnel lens and the lens cover are overlapped with each other, when an optical sensor such as a heat ray sensor is used as the human body detection sensor, the amount of transmitted light (also the heat ray) decreases, There is a problem that the sensitivity is reduced.

An object of the present invention is to solve the above-described problems, and a component for controlling a shape of a detection area is integrally formed with a rotation frame for changing a detection direction, thereby providing a component. An object of the present invention is to provide a human body detection switch in which the number of points is reduced and the lens cover is eliminated, thereby suppressing a reduction in the amount of transmission by a filter.

Means for Solving the Problems In order to achieve the above object, the present invention provides a case in which locking claws inserted into holding holes provided in a mounting frame for a wiring tool are provided on both side edges thereof, A rotating frame that is rotatable with respect to the front surface and is mounted so that the heat ray sensor rotates integrally,
A circuit that generates an output when an intruder is detected in the detection area of the heat ray sensor formed in front of the case, and an operation section that can change the operation of the circuit section. The filter in which the lens is divided into a number of small areas forms the rotary frame continuously and integrally.

[Operation] According to the above configuration, the detection area can be changed according to the installation conditions and the like, and the operation of the circuit unit can be changed by providing the rotatable frame that is rotatable with respect to the front surface of the case. By providing a changeable operation unit, it is possible to change the operation according to installation conditions and use conditions. Moreover,
Since the filter has sufficient strength by being formed integrally with the rotating frame, the filter can be replaced with a Fresnel lens and a lens cover provided separately from the rotating frame in the conventional configuration, As a result, a lens cover becomes unnecessary. That is, while the conventional configuration requires three parts, namely, the rotating frame, the filter, and the lens cover, the present invention can realize the same function with one part, and reduces the number of parts. As a result, the workability of the assembling work is improved, and the cost is reduced. Further, since the lens cover is not provided, a decrease in the transmission amount is small, and a decrease in sensitivity due to the presence of the filter can be suppressed. In addition, since the locking claw is provided so that it can be mounted on the mounting frame for wiring equipment, there is no need to prepare a new mounting member when mounting on a wall or the like, and the mounting member for the mounting equipment is diverted. You can do
An increase in manufacturing cost and inventory cost of the mounting member can be suppressed, and the burden on the installer for learning a new construction technique is small.

[Embodiment] As shown in FIGS. 1 to 3, a case 1 is formed by combining a body 10 made of a synthetic resin molded product and a cover 20, and is a large-sized wiring device defined by the JIS standard. It has dimensions equivalent to three modules, and has a mounting portion formed so that it can be attached to a metal mounting frame or a synthetic resin mounting frame specified by the industry standard of the Wiring Equipment Manufacturers 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 storage chamber 13 and a pair of terminal storage chambers 14, and a pair of holding ribs 15 project from the inner peripheral surfaces of the left and right side walls of the circuit storage chamber 13. The left and right ends of the rotating frame support plate 16 are held in 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.

Terminals 50 are housed in the terminal storage chamber 14. The terminal 50 includes a terminal plate 51 and a locking spring 52 having a spring force directed toward the terminal plate 51.
And a release button 53 capable of pressing the locking spring 52 against the spring force, and has a structure known as a quick connection terminal. One terminal storage chamber 14 has a pair of terminal plates 51 and a pair of locking springs 52.
The release button 53 is provided so as to be shared by both the lock springs 52. Each lock spring is on the bottom wall of the body 10.
An electric wire insertion hole (not shown) is formed corresponding to 52, and a part of the release button 53 is exposed so that the release button 53 is released against the spring force of the locking spring 52 by a jig such as a driver. The button 53 can be pressed. Here, the terminal 50 is configured such that a single copper wire having a diameter of 1.6 or 2.0 for general residential wiring can be connected thereto. At one place of the terminal board 51, a connecting piece 54 is provided so as to protrude upward.
The terminal 50 and the circuit portion on the printed circuit board 40 are electrically connected by being fixed to the solder by soldering.

The rotating frame 30 is formed in a substantially cylindrical shape with a material that transmits far infrared rays such as high-density polyethylene, and has an opening on the lower surface side in FIG. Both ends of the rotating frame 30 in the axial direction are disk-shaped rotating plates 31a and 31b, and both rotating plates 31a and 31b are continuously and integrally connected via a filter 32 that also serves as a lens forming a Fresnel lens. . A third printed circuit board 44 on which a pyroelectric element P as a human body detection sensor for detecting a human body by a heat ray and a peripheral circuit portion thereof are mounted inside the rotating frame 30. Since the rotating plates 31a and 31b are placed on the rotating surfaces 17a and 16a, the rotating frame 30 can rotate with respect to the body 10. 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. A boss (not shown) corresponding to the fixing notch 31a is formed on one rotating plate 31a of the rotating frame 30 along the inner side surface, and the other rotating plate is formed.
The support hole 34 into which the fixing projection 46 is fitted is formed in the base 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 into the boss, the printed board 44 is fixed to the rotating frame 30. One rotating plate 31a
A handle 36 that is operated to adjust the angle of the rotating frame 30 with respect to the body 10 is provided on the peripheral surface of the device. Also, both rotating plates
Stoppers 37a, 37b for restricting the rotation range of the rotation frame 30 by contacting the outer peripheral surfaces of the cover 31 with the outer surfaces of the 31a, 31b.
Are protruded from each other. The filter 32 is a rotating frame.
The rotary frame 30 is formed integrally with the rotary frame 30, and is formed to be sufficiently thinner (0.5 to 1 mm) than other portions of the rotary frame 30, so that far infrared rays can be easily transmitted. Parts other than the filter 32 are formed to be thick, so that mechanical strength is maintained. The filter 32 is a Fresnel lens and is divided into a number of areas, and divides the detection area of the pyroelectric element P into a number of small areas. As described above, by forming the filter 32 continuously and integrally with the rotating frame 30, the occurrence of distortion and the like is reduced even though the filter 32 has a curved surface,
As a result, the detection area is set accurately.

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 in a notch 41a formed in the printed circuit board 40. It is designed to be inserted. Further, the jumper wire 47 connecting the printed board 44 in the rotating frame 30 and the other printed boards 40 and 42 is connected to the rotating frame 30 so as not to be disconnected when the rotating frame 30 is rotated.
Is set to have a margin greater than the rotatable length of. An insulating sheet 48 is provided on the upper surface of the printed board 40 so as not to short-circuit with the circuit section of the printed board 44.

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,
37b is regulated by contacting the inner peripheral surface of the cover 20, and the range is set to approximately 40 ° on the left and right. Further, the detection area when the rotating frame 30 is fixed is approximately 90 °, and by rotating the rotating frame 30, the detection area can be adjusted within a range of 170 °. A handle 71 for operating a switch SW, which will be described later, is provided on a portion of the front surface of the cover 20 which is different from the rotating frame holding plates 24a and 24b.
Are formed, a light receiving hole 26 exposing the light receiving element PD, and a display hole 27 exposing the light emitting diode LD. 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 portion corresponding to the handle insertion hole 25, and has light transmitting portions 28b and 28c at portions corresponding to the light receiving hole 26 and the display hole 27, respectively. Cover 2
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 variable resistor VR. 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.

The circuit section is configured as shown in FIG. The above-mentioned four terminals 50 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 commercial power supply. 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 by externally attaching peripheral components to an integrated circuit that is commercially available under the name of CF1651C, for example. When the infrared ray radiated from the human body is detected by the pyroelectric element P, the output terminal OUT is connected. The output level is set to “H” for a certain time. This time, variable resistor VR
It can be changed by adjusting. This adjustment range is set, for example, from about 10 seconds to about 6 minutes. Further, a light receiving element PD made of CdS is connected to the enable terminal ENA, and the operation of the processing circuit IC is set to stop when the amount of light received by the light receiving element PD increases. The output terminal OUT of the processing circuit IC is connected to the relay control circuit 83 via the switch SW. The relay control circuit 83 includes a switch element Q composed of a transistor.
Element LD consisting of a coil, a relay coil L and a light emitting diode
Is connected to the power supply circuit 81, and while the control terminal of the switch element Q is at "H", the contact r of the relay Ry is closed and the display element LD is turned on.
The switch SW is a three-contact slide switch that sets a control terminal of the relay control circuit 83 to either “H” or “L” and a state connected to the output terminal OUT of the processing circuit IC. 3 states can be selected. Therefore, if the control terminal of the relay control circuit 83 is manually set to either “H” or “L” by operating the switch SW, 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

[Effects of the Invention] As described above, the present invention provides a case in which locking claws inserted into holding holes provided in a mounting frame for a wiring tool are provided on both side edges,
A rotatable frame that is rotatable with respect to the front of the case and is mounted so that the heat ray sensor rotates integrally, and detects an intruder in the detection area of the heat ray sensor formed in front of the case Then, there is provided a circuit section that generates an output, an operation section that can change the operation of the circuit section, and a filter that forms a lens that divides the detection area of the heat ray sensor into a number of small areas is continuously integrated with the rotating frame The detection area can be changed according to the installation conditions, etc., of course, by providing a rotatable frame that is rotatable with respect to the front surface of the case.
The provision of the operation unit capable of changing the operation of the circuit unit has an advantage that the operation can be changed according to the installation conditions and use conditions. Moreover, since the filter is formed continuously and integrally with the rotating frame, the filter has a sufficient strength. Therefore, it is possible to replace the Fresnel lens and the lens cover provided separately from the rotating frame in the conventional configuration. Yes, as a result, the lens cover becomes unnecessary. That is, while the conventional configuration requires three parts, namely, the rotating frame, the filter, and the lens cover, the present invention can realize the same function with one part, and reduces the number of parts. This has the advantage that the workability of the assembly work is improved and the cost is reduced. In addition, since a lens cover is not required, a decrease in the transmission amount is small, and a decrease in sensitivity due to the presence of the filter can be suppressed. In addition, since the locking claw is provided so that it can be attached to the mounting frame for wiring equipment, there is no need to prepare a new mounting member when mounting on a wall or the like, and the mounting member for wiring equipment is diverted Therefore, it is possible to suppress an increase in the manufacturing cost and the inventory cost of the mounting member, and there is an advantage that the burden on the installer for learning a new construction technique is small.

[Brief description of the drawings]

1 (a) and 1 (b) are exploded perspective views showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the same, FIG. 3 is a transverse sectional view of the same, and FIG. It is a circuit diagram of a part. 1 ... case, 30 ... rotating frame, 32 ... filter, P ...
Pyroelectric element.

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01H 35/00 H03K 17/78

Claims (1)

(57) [Claims] 1. A case in which locking claws inserted into holding holes provided in a mounting frame for a wiring tool are protruded from both side edges, and a heat ray sensor which is rotatable with respect to a front surface of the case and is integrated with the case. Change the operation of the circuit part, comprising a rotating frame installed so as to rotate and a circuit part that generates an output when an intruder is detected in the detection area of the heat ray sensor formed in front of the case A human body detection switch, comprising: a filter having a possible operation unit and a lens formed to divide a detection area of the heat ray sensor into a number of small areas, and the filter is formed continuously and integrally with the rotating frame.