JPH01191088A - Human body detection switch - Google Patents

Abstract

PURPOSE:To change the direction of a detection area according to a construction place and to increase the degree of freedom of installation by incorporating a hot-wire sensor in a rotary frame which swings freely around an axis nearly parallel to the front surface of a case. CONSTITUTION:A hot wire P is incorporated in the rotary frame 30 which swings freely around the axis almost parallel to the front surface of the case 1. Consequently, the hot-wire sensor P can swings freely to the case 1 and the direction of the detection area can be changed according to the construction place. Further, a manual switch SW for switching between an automatic mode and an invariably on mode is provided and then a contact point output is turned on continuously irrelevantly to whether or not a person is in the detection area. Further, the rotary frame and case may be locked stepwise by a projection and recess part and a locking means.

Description

[Detailed Description of the Invention] [Industrial Application Field 1] The present invention relates to a human body detection switch that has a heat ray sensor and provides a contact output when there is an intruder within the detection area of the heat ray sensor. be.

[Prior Art] Generally, this type of human body detection switch is used to automatically turn on a light or operate a ventilation fan when entering a restroom or the like. therefore,
It is necessary to set the detection area appropriately according to the usage environment [Problem to be solved by the invention J In conventional human body detection switches, the detection area is generally fixed, so it is necessary to set the detection area appropriately according to the usage environment. There was a problem in that the installation location had to be changed, and in places where the installation location was limited, usage was restricted.

The present invention aims to solve the above-mentioned problems, and by making the detection area variable,
The present invention aims to provide a human body detection switch that has a high degree of freedom in all locations.

1 Means for Solving the Problem 1 The present invention achieves the above object by having a configuration in which a heat ray sensor is housed in a rotating frame that can freely swing around an axis substantially parallel to the front surface of the case. .

In addition, an uneven part is formed along the circumferential direction of the rotating frame on either one of the opposing surfaces of the case and the rotating frame, and the rotation of the rotating frame is controlled in stages in relation to the uneven part on the other opposing surface. A locking means for locking may be formed.

Furthermore, it is desirable to provide a manual switch for switching between an automatic mode in which a contact output is obtained in conjunction with the heat ray sensor, and a mode in which it is always turned on regardless of detection by the heat ray sensor.

1 Effect 1 According to the above configuration, since the heat ray sensor is housed in a rotating frame that is swingable with respect to the case, the direction of the detection area can be changed depending on the construction location.

In addition, in a device that swings the rotating frame by locking the rotating frame and the case in stages using the uneven portion and the locking means, the orientation of the detection area is variable, and the position of the detection area is variable. This makes fixing easier.

Furthermore, if a manual switch is provided that can switch between automatic mode and always-on mode, the contact output will be set to be continuously on, regardless of whether a person is present in the detection area. It is something that can be done.

[Example 11] As shown in Figs. 1 to 3, the case 1 is formed by combining a body 10 made of a synthetic resin molded product and a cover 20, and has the same size as the wiring device specified in the JIS standard. Square 3
The mounting portion has dimensions corresponding to that of a single monolayer, and is formed so that it can be mounted to a metal mounting frame or a synthetic resin mounting frame specified by the industrial association standards of the Wiring Box Industry Association. The mounting portions are formed on both sides of the cover 20, and for the metal mounting frame, the projecting pieces of the metal mounting frame are inserted into the locking holes 21, which are bored in pairs on both the left and right sides of the cover 20. They are connected by being inserted, and the synthetic resin mounting frame has four locking claws 22 protruding from each of the green sides of the cover 20. They are connected by inserting them into the holding holes.

One hook 23 is provided on each of the left and right edges and the rear edge of the lower surface of the cover 20, and the seven hooks 23 are connected to the body 1.
The cover 20 is fitted into a fitting hole 11 formed in the circumferential wall of the body 10 from the inside of the circumferential wall of the body 10 to couple the body 10 and the cover 20.

The inside of the body 10 is divided into a circuit storage chamber 13 by a partition plate 12.
and a pair of terminal storage chambers 14, and a pair of holding lips 1 are provided on the inner peripheral surfaces of both left and right walls of the circuit storage chamber 13.
5 is provided protrudingly, and a rotation frame support plate 1 is provided in the groove between the holding lips 15.
A rotation frame support lip 17 is formed on the inner circumference of the rear wall of the body 10, facing the zero rotation frame support plate 16, which holds both left and right ends of the body 10. Frame support plate 16
The upper surface of the rotating frame support rib 17 forms arc-shaped rotating surfaces 16m and 17m, respectively, with a concave center. 30 is rotatably supported.

A printed circuit board 40 @1 on which a power supply circuit section is mounted is mounted inside the body 10. The printed circuit board 40 is formed with cutouts 41m and 41b that expose the rotational surface 16m of the rotational frame support plate 16 and the rotational surface 17m of the rotational frame support rib 17, respectively. This printed circuit board 40 is placed on the partition 112 etc., and a space is formed between the inner bottom surface of the body 10 and the printed circuit board 40, and the circuit components mounted on the printed circuit board 40 are placed in this space. It is designed to be delivered inside. In particular, the main circuit components on the printed circuit board 40 will be stored in a portion corresponding to the circuit storage chamber 13. Further, a boss 18 is provided in the circuit storage chamber 13 to protrude from the inner bottom surface of the body 10, and a second printed circuit board 42 is held by a fixing screw 19 that is screwed into the boss 18. A fixing notch 43 into which the fixing screw 19 is inserted is formed at the periphery of the printed circuit board 42, and a variable resistor VR is mounted therein. The variable resistor VR is of a sliding type, and a handle 72 for twisting is exposed through a notch 41a formed at the periphery of the first printed circuit board 40.

Terminals 50 are loaded into the terminal storage chamber 14. The terminal 50 includes a terminal board 51, a locking spring 52 having a spring force directed toward the terminal board 51, and a release button 53 capable of suppressing the locking spring 52 against the spring force. It has a well-known structure. A pair of terminal plates 51 are provided in one terminal storage chamber 14.
and a pair of locking springs 52 are supplied in a bag, and a release button 53 is provided.
is arranged so as to be shared by both locking springs 52. A wire insertion hole (not shown) is formed in the bottom wall of the body 10 in correspondence with each locking spring 52, and a part of the release button 53 is exposed so that it can be inserted with a jig such as a screwdriver. The release button 53 can be pressed against the spring force of the lock spring 52. Here, the terminal 50 has a diameter of 1 and 6 for general residential wiring.
It is configured so that a single copper wire of am or 2.0 am can be connected. A connecting piece 54 is provided at one place of the #1 daughter board 51 to protrude upward, and this connecting piece 54 is soldered and fixed to the printed circuit board 40 to connect the terminal 50 and the circuit section on the printed circuit board 40. are electrically connected.

The rotating frame 30 is formed in a frame shape in which a pair of rotating plates 31a and 31b, which are formed in a disc shape and face each other at a distance from each other, are connected by a pair of mutually parallel side frames 32, and is used as a focal point as a heat ray sensor. Mounted electronic element P and its peripheral circuit @
0 rotation plate 31a, 3 on which the printed circuit board 44 of No. 3 is attached
1b is placed on the rotating surface 17a=16a, so that the rotating frame 30 can rotate relative to the body 10. A fixing notch 45 is formed on one side of the printed circuit board 44, and a fixing protrusion 46 is protruded from one side opposite to the negative side. One rotating plate 31m of the rotating frame 30 is formed with a boss 33 corresponding to the fixing notch 31a along the inner surface, and the other rotating plate 31 is formed with a boss 33 corresponding to the fixing notch 31a.
A support hole 34 into which the fixing protrusion 46 is inserted is formed in b. Therefore, by fitting the fixing protrusion 46 into the support hole 34 and screwing the fixing screw 35 made of a tapping screw into the boss 33 through the fixing notch 45, the printed circuit board 44 is fixed to the rotating frame 30. It will be done. The body 1 of the rotating frame 30 is provided on the circumferential surface of one rotating plate 31a.
An angle glW1 groove 36 is formed which is stirred when the angle with respect to 0 is *S. Furthermore, stoppers 37g and 37b, which limit the rotation range of the rotation frame 30 by coming into contact with the inner circumferential surface of the cover 20, are provided on the outer surfaces of the rotary plates 31a and 31b, respectively.

Incidentally, as shown in FIG. 4, an uneven portion 91 is formed on the circumferential surface of the rotating frame 30 at a portion facing the rotating surfaces 16a and 17a. , 17a is provided with a spring piece 92 that comes into elastic contact with the uneven surface 91. The uneven surface 91 corresponds to the rotating frame 30
When the rotating frame 30 rotates, the spring piece 92 falls into the concave part of the uneven part 91 and is locked, so that the rotating frame 30 gradually rotates. It locks and gives a click, ensuring the feeling of harvesting. Also, when removing debris, etc., use the rotation frame 3.
Since the rotating frame 30 does not move even if it lightly touches 0, it is possible to prevent the detection area from changing inadvertently. Furthermore, since the angle adjustment is performed in stages, the reproducibility of the angle adjustment is good.

As shown in FIG. 5, the means for applying the click includes an elastic piece 93 integrally formed on the rotating plates 31a and 31b of the rotating frame 30, and a rotating frame holding plate 24a facing the rotating plates 31a and 31b. , 24b may be provided with a plurality of ribs 94 protruding from the inner peripheral surface thereof to form the uneven portion 91.

In this case, the click is applied by the elastic piece 93 falling between the lips 94. Further, as shown in FIG. 6, a spring piece 96 is extended to the rotating frame 30 to form an uneven portion 91 on the spring piece 96, and projections 95 are formed on the rotating surfaces 16a and 17a.
may be formed.

The above-mentioned printed circuit boards 40, 42, and 44 are connected to each other via a no-amper #I47 made of a flat couple. The jumper wire 47 connecting the first printed circuit board 40 and C in the body 10/the second printed circuit board 42 and the third printed circuit board 44 in the rotation frame 30 is connected to the first
It is inserted into a notch 41a formed in a printed circuit board 40. An insulating sheet 48 is disposed on the upper surface of the printed circuit board 40 to prevent short circuits with the circuit section of the printed circuit board 44.

By the way, the pyroelectric element P mounted on the printed circuit board 44 is arranged between the both side frames 32 so that the upper surface side in FIG. A lens plate 60 for setting a detection area is provided.

The lens plate 60 is a flat 7-renel lens made of a material that transmits infrared rays, such as high-density polyethylene, and
It is formed into a rectangular shape, and has a pair of engaging 7 hooks 61 on each side edge.
is installed protrudingly. This lens plate 60 can be rotated in a semi-cylindrical shape by placing a local part of the lens plate 60 on a support lip 39 formed along the periphery of the rotating plate 31a*31b of the rotating frame 30. It is held by a moving frame 30. The lens plate 60 is composed of a plurality of regions.

Needless to say, the focus of each region is set on the detection surface of the pyroelectric element P. In this way, since the detection area is controlled by the lens plate 60, if a product with a different detection area is to be obtained, only the lens plate 60 needs to be replaced, and the design can be changed economically. Furthermore, since the flat lens plate 60 is curved as described above, manufacturing is easy, and in this respect, costs can be reduced.

On the upper surface of the cover 20, there are rotating plates 31m and 3 of the rotating frame 30.
A pair of rotating frame holding plates 24m, 2 each holding the ib
4b is provided protrudingly. Rotating frame holding plate 24a.

24b each has a peripheral wall, and rotary plates 31m and 31b rotate along the inner peripheral surface of the peripheral wall. That is, the rotating plate 31
m and 31b are the inner circumferential surfaces of the peripheral walls of the rotating frame holding plates 24a and 24b, the rotating frame supporting plate 16 and the rotating frame holding lip 17;
As described above, the rotation range of the rotation frame 30 is such that the stoppers 37a and 37b come into contact with the inner peripheral surface of the cover 20. The range is set to approximately 40° from side to side. That is, since the detection area with the rotation frame 30 fixed is approximately 90 degrees, by rotating the rotation frame 30, the detection area can be expanded to 170 degrees.
There are 114 verses within the range of 114 degrees. On the front surface of the cover 20, in a part different from the rotating frame holding plates 24a and 24b,
A handle insertion hole 25 through which a handle 71 of a switch SW, which will be described later, is exposed, and a light receiving element PDi? exposed light receiving hole 26;
Display holes 27 are formed through which display elements LD made of light emitting diodes are exposed. A nameplate 28 is provided at a portion spanning the handle insertion hole 25, the light receiving hole 26, and the display hole 27. Here, the nameplate 28 has a transparent hole 28a at a portion corresponding to the handle insertion hole 25, and transparent portions 28&, 28c at portions corresponding to the light receiving hole 26 and the display hole 27, respectively. A handle exposure hole 29 through which the operation handle 72 of the variable resistor VR is exposed is formed in the center of one side of the cover 20. As shown in FIG. 7, this part is the part covered by the flash plate 99 when the case 1 is mounted on the mounting frame and the JIS standard 7 lash plate 99 is arranged on the front side of the case 1. This prevents anyone other than the installer from accidentally touching the operating handle 72.

A lens cover 64 made of a synthetic resin molded product through which infrared rays can pass is attached between the rotating frame holding plates 24a and 24b in the cover 20. The lens cover 64 is formed in a semicylindrical shape, and a pair of locking pieces 65 are provided on each side edge of the lens cover 64.
is installed protrudingly. As shown in FIG. 3, this locking piece 65 is locked to the inner peripheral surface of the cover 20, thereby fixing the lens cover 64 to the cover 20. The lens cover 64 is arranged so as to be in close contact with the outer surface of the lens plate 60, thereby preventing direct contact with the lens plate 60 and preventing changes in detection sensitivity due to dirt on the lens plate 60. That's what I do. Second, the lens plate 60 is a 7-lens lens, so it is thin and bends easily, and if dirt gets on it, it is difficult to wipe it off, but the lens cover 64 has a smooth surface that prevents dirt from getting on it, and is hard. Since some dirt can be easily wiped off, changes in detection sensitivity can be prevented.

The circuit section is constructed as shown in FIG.

The four terminals 50 described above each constitute an input terminal of a commercial power source and an output terminal in which a contact r of a relay RF is inserted between the commercial power source and the input terminal. The commercial power source is rectified and smoothed by a power supply circuit 81 and stabilized by a 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, for example, CF
It is composed of an integrated circuit commercially available under a name such as 1651C with peripheral components attached externally, and when the infrared rays emitted from the human body are detected by the pyroelectric element P, the output level of the output terminal OUT remains high for a certain period of time. This time can be changed by setting the variable resistor VR to tS.The adjustment range is set, for example, from about 10 seconds to about 6 minutes. Furthermore, a light receiving element PD made of CdS is connected to the enable terminal EN^, and is set so that the operation of the processing circuit IC stops when the amount of light received by the light receiving element PD increases.Processing circuit IC The output terminal OUT of is connected to the relay 11111 circuit 83 via the switch SW.

The relay control circuit 83 has a series circuit of a switching element Q made of a transistor, a relay coil L, and a display element LD made of a light emitting diode connected to the power supply circuit 81, and the control terminal of the switching element Q is "H". While
Contact r of relay Ry closes, and display element LD lights up. The switch SW is a 3-contact, < slide switch, and is connected to the state where the control W terminal of the relay control circuit 83 is set to either 'H' or 'L', and to the output terminal OUT of the processing circuit IC. Therefore, by operating the switch SW, the control terminal of the relay control circuit 83 can be set to "H" and "L".
If you manually set it to either ", the contact r will be in either the on or off state accordingly.

Furthermore, if a state is selected in which the control terminal of the relay control circuit 83 is connected to the output terminal OUT of the processing circuit IC, when a human body is detected by the pyroelectric element P, the contact r is turned on for a certain period of time.

Here, the power supply circuit 81, constant voltage circuit 82, relay control circuit 83, switch SW, and light receiving element PD are mounted on the first printed circuit board 40, and the variable resistor VR is mounted on the second printed circuit board 42. , the processing circuit IC is the third
is mounted on a printed circuit board 44.

[Embodiment 21] In this embodiment, as shown in FIGS. 9 to 12, a switch SW is constructed using parts assembled in the case 1, without using a switch as a product. Furthermore, terminal storage chambers 14 are formed on both sides of the switch storage chamber 75 that stores the switch SW. The switch SW is a wave-type double-throw switch, and one of the pair of terminal plates 51 disposed in one terminal storage chamber 14 extends into the switch storage chamber 75 and is fixed to the tip thereof. After that, α76a is provided. This terminal board 51 does not have a connecting piece for connecting to the printed circuit board 40.

A contact plate 77 is disposed within the switch storage chamber 75, and a fixed contact 76b provided on the contact plate 77 faces the fixed contact 76a. Both fixed contacts 76a, 76b
A movable element 78 is disposed between them, and the movable element 78 is supported such that a contact 78a provided on the movable element 78 comes into contact with either one of the fixed contacts 76a, 76b. ! , board 7 board top 9
It is arranged so that it can be moved upward.

The fulcrum plate 79 is connected to one of the terminals 50 via a conductive pattern on the printed circuit board 40 or via a no-amplifier fi 47a (see FIG. 13). The movable element 78 is formed in a substantially U-shape, and an antipine spring 74 made of a coil spring is interposed between the movable element 78 and the handle 71. The handle 71 is swingably attached to the case 1, and when the handle 71 is swinged, the movable element 78 is reversed by a snap action due to the spring force of the reversal spring, similar to a well-known wave switch. Fixed contacts 76m, 76b
It comes into contact with. However, a double-throw switch is formed using the fulcrum plate 79 as a common contact, and as shown in FIG. 14, one terminal 50 on the power supply side and one terminal 50 on the load side are connected, and one The fixed contact 76m of the terminal is connected to the other terminal on the load side, the common contact is connected to the other terminal 50 on the power supply side, and the relay control circuit 83
Contact r of relay Ry controlled by both fixed contacts 76
Connect between a and 766. As a result, it is possible to select with the switch SW whether the load is turned on and off in conjunction with the contacts of relay R, or whether it is constantly supplied with power.In other words, when a person enters the detection area, the load You can choose between an automatic mode, where power is applied to the load whenever someone is present, or an always-on mode, where power is applied to the load regardless of the presence of a person in the sensing area.

According to this configuration, when the load is lighting and a person is detected by the pyroelectric element P in the automatic mode, the lighting is turned on for a certain period of time, and the energization time to the processing circuit IC and relay RV is Because it is limited, the amount of heat generated inside can be reduced. Also, if the lights are turned on only for a certain period of time, it is inconvenient when you want to stay in a certain place for a long time, but after the lights are turned on,
By switching the switch SW, it becomes an always-on mode and the lighting can be kept on, so there is no inconvenience.

[Effects of the Invention 1] As described above, the present invention has a heat ray sensor housed in a rotating frame that can freely swing around an axis substantially parallel to the front surface of the case, and the heat ray sensor is attached to the case. Since it can be swung against the ground, the direction of the detection area can be changed depending on the construction site, and has the advantage of a high degree of freedom in installation.

In addition, an uneven part is formed along the circumferential direction of the rotating frame on either one of the opposing surfaces of the case and the rotating frame, and the rotation of the rotating frame is controlled in stages in relation to the uneven part on the other opposing surface. If a locking means is formed to lock the rotation frame, when the rotation frame is swung, the rotation frame can be positioned by the uneven portion and the locking means. This makes it easier to fix the position while making the orientation variable. As a result, there is an advantage that the reproducibility of setting the detection area is high.

Furthermore, if a manual switch is provided to switch between an automatic mode that provides a contact output linked to the heat ray sensor and a mode that is always on regardless of the detection by the heat ray sensor, if a person is present in the detection area. This has the advantage that the contact output can be continuously set to the on state regardless of whether the contact output is turned on or not.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is a vertical cross-sectional view of the same as above, Fig. 3 is a cross-sectional view of the same as above,
(,)Cb) in Figures 6 to 6 are respectively a front view and a cross-sectional view of the main parts of the same, Figure 7 is a schematic cross-sectional view of the same, and Figure 8 is a schematic cross-sectional view of the same.
9 is an exploded perspective view showing another embodiment of the present invention; FIG. 10 is a partially cutaway front view of the same; FIG. 11 is a cross-sectional view of the same; FIG. 12 is a schematic longitudinal sectional view of the same as above, FIG. 13 is a front view of the vicinity of the switch of the above, and FIG. 14 is a block diagram of the same as above. DESCRIPTION OF SYMBOLS 1... Case, 30... Rotating frame, 91... Uneven part, 92... Spring piece, 93... Elastic piece, 94... Lip, 95... Protrusion, P...・Pyroelectric element, SW...switch. Agent Patent Attorney Stone 1) Ai 7Figure 2Figure 3Figure 9Figure 10Figure 12Figure 13Figure 14Figure n phantom

Claims (3)

[Claims] (1) In a human body detection switch that has a heat ray sensor inside the case and provides a contact output when an intruder is detected within the detection area of the heat ray sensor formed at the front of the case, an axis approximately parallel to the front of the case A human body detection switch characterized in that a heat ray sensor is housed within a rotating frame that can freely swing around the body. (2) In a human body detection switch that has a heat ray sensor inside the case and provides a contact output when an intruder is detected within the detection area of the heat ray sensor formed at the front of the case, an axis approximately parallel to the front of the case A heat ray sensor is housed in a rotating frame that can freely swing around the case, and an uneven part is formed along the circumferential direction of the rotating frame on the facing surface of either the case and the rotating frame, and the other side A human body detection switch characterized in that a locking means for locking the rotation of the rotating frame in stages in relation to the uneven portion is formed on the opposing surface of the switch. (3) In a human body detection switch that has a heat ray sensor inside the case and provides a contact output when an intruder is detected within the detection area of the heat ray sensor formed at the front of the case, the contact output linked to the heat ray sensor is The automatic mode obtained and
A human body detection switch comprising a manual switch for switching to a mode in which it is always on regardless of detection by a heat ray sensor.