JP2000243170A - Operation switch for heat-ray detection type load control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the cost of manufacture by facilitating assembling work. SOLUTION: A switch element 1 is made up by assembling a body 1A made of an insulating synthetic resin molding and a cover 1B made of an insulating synthetic resin molding and coveringly mounted on the body 1A. The cover 1B is integrally provided projecting downward from both end faces of the body 1A with lock pieces 13, 13 which have lock holes 12, 12 to be engaged with lock projection parts 11, 11 projectingly provided on both the end faces of the body 1A when the cover 1B is coveringly mounted on the body 1A. Lower ends of the lock pieces 13 are guided by slopes 11a formed on upper ends of the lock projection parts 11 and get on the lock projection parts 11, and the cover 1B is pressed toward the body 1A side, the lock projection parts 11 thereby engage with the lock holes 12 in the lock pieces 13, thus the cover 1B is connected/fixed to the body 1A. That is, the body 1A and the cover 1B can be assembled with a single motion and the assembly is made much easier than cases where an assembling frame 54 is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat ray detecting type load control device for detecting a heat ray radiated from a human body and controlling a power supply from a power supply to a load in accordance with the presence or absence of a person in a detection area. The present invention relates to an operation switch for switching a control state of a load by a detection-type load control device.

[0002]

2. Description of the Related Art Conventionally, a heat ray (far-infrared ray) from a human body is detected using a heat ray sensor such as a pyroelectric infrared sensor, and when the presence of a person is detected based on a heat dose, a load is applied from a power supply. There has been provided a heat ray detection type load control device that controls power supply to a power supply to turn on an illumination load, for example.

FIG. 9 is a block diagram showing an example of a heat ray detection type load control device X. A pyroelectric infrared sensor (hereinafter, referred to as a pyroelectric sensor) 60 is used as a heat ray sensor for detecting a heat ray from a human body. The output of the electric sensor 60 is
Are input to the microcomputer 61 after amplification. The microcomputer 61 outputs the output of the amplifier 62 to A
/ D conversion, and based on the output value of the pyroelectric sensor 60, the presence or absence of a person in a preset detection area is determined. Here, the detection area is set by an optical element such as a lens, a mirror, or a light-shielding plate disposed on a path of incidence of a heat ray to the pyroelectric sensor 60. Microcomputer 6
Inside 1, a detection signal is generated when it is determined based on the output of the pyroelectric sensor 60 that a person is present in the detection area.

A microcomputer 61 controls a driving unit 63
Through a bidirectional three-terminal thyristor (triac) 64
It has a function to turn it on and off. This triac 64
Is a power supply terminal F for connecting a commercial power supply AC.₁₁, F₁₂And lighting
Load terminal F for connecting load 70 ₁₃, F₁₄Between (power supply end
Child F₁₁And load terminal F₁₄Between) and the micro
The conduction angle is controlled by the computer 61 and the illumination load 70 is controlled.
The power supply is adjusted to change the light output.

The most basic operation of the microcomputer 61 is as follows. When a person is detected based on a change in the heat dose incident on the pyroelectric sensor 60 (ie, when a detection signal is generated), the illumination load 70 is turned off. In the lighting operation, the time during which the lighting load 70 is turned on is limited by a timer means configured by the microcomputer 61.

The timer means limits a predetermined holding time every time a detection signal is generated, and is configured to be retriggerable. That is, if the detection signal is generated before the expiration of the holding time, the time limit of the holding time is redone.If the detection signal is not generated before the expiration of the holding time from the detection signal that is generated latest, the holding time is retained after the elapse of the holding time. Time expires. Note that the holding time can be adjusted by the operation holding time setting unit 65.

Further, the power source of the internal circuit is a power source terminal F ₁₁ ,
Receiving the connected commercial power source AC to the F ₁₂ obtained by the DC stabilized power supply 66 that outputs a DC constant voltage. The microcomputer 61 is also connected to a reset circuit 67 formed of an integrated circuit for performing a reset when the power is turned on.

The heat ray detecting type load control device X is configured to be mounted on a ceiling. For example, when the load to be controlled is the lighting load 70, it is juxtaposed with the lighting load 70.
This is to make the detection area substantially coincide with the light irradiation range of the illumination load 70.

By the way, there is a demand to turn on or off the lighting load 70 irrespective of the output of the pyroelectric sensor 60. Therefore, the lighting load 70 is controlled by the heat ray detection type load control device X or not. Is provided with an operation switch S 'for selecting whether to turn on or off.

FIG. 10 shows a state in which the operation switch S 'is connected to the heat ray detection type load control device X. The operation switch S ′ includes a common terminal COM connected to one load terminal F ₁₃ of the heat ray detection type load control device X via the lighting load 70, and another load terminal F of the heat ray detection type load control device X. ₁₄ , a second terminal M connected to one end of the commercial power supply AC, a state where the common terminal COM is connected to the first terminal L, a second terminal A switch unit 51 for selectively switching between a state of connection to the unit M and a state of not connecting to any of the first and second terminal units L and M is provided in the body 50. That is, when the common terminal COM is connected to the first terminal L,
As in FIG. 9, the lighting load 70 is connected between the load terminals F ₁₃ and F ₁₄ of the heat ray detection type load control device X.
The power supply from the commercial power supply AC to the lighting load 70 is controlled by the heat ray detection type load control device X. Also, the common terminal C
When the OM is connected to the second terminal M, the illumination load 7
0 is a heat ray detection type load control device X and an operation switch S '.
Is connected to both poles of the commercial power supply AC via
The illumination load 70 can be turned on regardless of the control operation of the heat ray detection type load control device X. Further, when the common terminal COM is not connected to any of the first and second terminals L and M, one end of the lighting load 70 is completely disconnected from the commercial power supply AC, and the heat ray detection type load control device X The lighting load 70 can be turned off regardless of the control operation of.

The conventional operation switch S 'is shown in FIGS.
As shown in FIG. 13, a switch portion 51 is housed in a substantially central portion of a body 50a formed of a synthetic resin in a substantially box shape, and a common terminal portion COM and first and second terminal portions are provided above the body 50a. L and M are housed, and the switch unit 51 is connected to the common terminal unit COM and the first and second terminal units L and M by a lead wire 52. The switch unit 51 is composed of a commercially available rotary switch that functions alone, and is configured such that the internal contact can be switched by rotating the operation knob 53 to a predetermined position.

A cover 50b having a hole for exposing the operation knob 53 is attached to the opening side of the body 50a. The body 50a and the cover 50b are made of a metal assembly frame 54.
To form a body 50. Assembly frame 5
The reference numeral 4 designates a leg piece 54b which is suspended from substantially the center and both sides of the main piece to form a substantially E-shape as a whole.
The tip of b is forked. Then, FIG.
As shown in (c), the assembly frame 54 is attached so as to straddle the cover 50b in a state where the body 50a is fitted to the cover 50b, and the forked ends are expanded to be joined by the assembly frame 54. The main piece of the assembly frame 54 is provided with a pair of locking claws (not shown) and a substantially square-shaped rising piece (not shown). A notch 55 is provided on the side surface of the body 50a to expose the screw-type terminals COM, M, and L.
Door 56 rotatably attached to the side of cover 50b
When a power supply line, a load line, or the like is connected, the door 56 is opened and the connection is made by tightening with a terminal screw 57.

Here, the body 50 is formed in a three-module size of a large-sized continuous wiring device (refer to JIS C8304), and as shown in FIG. (See JIS C8375)
It is buried in a wall or the like by using. The body 50 is attached to the attachment frame 41 by attaching the boss 50c protruding to the front side of the cover 50b with the appliance attachment opening 41a of the attachment frame 41.
This is performed by engaging the fixing claw 41b provided on the mounting frame 41 so as to be exposed from the opening with the opening of the rising piece 54d of the assembly frame 54.

[0014]

However, in the above-mentioned conventional example, since the assembly frame 54 is used for assembling the body 50a and the cover 50b, there is a problem that the assembling work of the body 50 is very troublesome.

In addition, since a commercially available rotary switch is used as the switch unit 51, the switch unit 51 and each of the terminal units COM, M, and L must be connected by a lead wire 52. The problem is that the manufacturing cost increases due to the increase in the number of switches, and the switch unit 51 having the contact switching mechanism housed in a synthetic resin case is further housed in a synthetic resin body 50. There is also a problem that material loss occurs because parts are used repeatedly.

The present invention has been made in view of the above problems, and has as its object to provide an operation switch for a heat ray detection type load control device which is easy to assemble and can reduce the manufacturing cost. It is in.

[0017]

In order to achieve the above object, the invention of claim 1 detects a heat ray radiated from a human body and supplies power from a power supply to a load according to the presence or absence of a person in a detection area. A common terminal connected to the heat ray detection type load control device to be controlled and connected to one output terminal of the heat ray detection type load control device via a load, and connected to the other output end of the heat ray detection type load control device. A first terminal unit, a second terminal unit connected to one end of the power supply, a state in which the common terminal unit is connected to the first terminal unit, a state in which the common terminal unit is connected to the second terminal unit, and first and second terminals. A switching mechanism for selectively switching to a state in which the terminal is not connected to any of the two terminal portions is provided in the body, and the body is formed of a substantially box-shaped body and a cover made of synthetic resin. One or more locking projections on one outer surface of the body or cover And one or a plurality of locked portions which are elastically displaced over the respective locking projections and are locked to the locking projections on the other of the body and the cover. The body and the cover are joined by the locking parts going over the locking projections and being locked to the locking projections, so that the body can be easily assembled with one touch and the assembly work is simplified. You. In addition, since the connection state of each terminal is switched by the switching mechanism, the number of components can be reduced and material loss can be eliminated as compared with the case of using a commercially available switch as in the conventional example. As a result, assembling is facilitated and manufacturing costs can be reduced.

According to a second aspect of the present invention, in the first aspect of the present invention, the locked portion has a locking hole to be locked to the locking projection and gets over the locking projection when the body and the cover are assembled. It is characterized by comprising a locking piece which is elastically displaced and resiliently restored, and has the same effect as the first aspect of the present invention.

According to a third aspect of the present invention, in the second aspect of the present invention, the end surface of the locking projection which the locking piece contacts when the body and the cover are assembled is inclined toward the connecting surface of the body and the cover. In addition to the effect of the second aspect of the present invention, the inclined surface makes it easier for the locking pieces to get over the locking projections, thereby further facilitating assembly.

The invention of claim 4 is the invention of claim 1 or 2 or 3
A rotating shaft having a plurality of cam portions in the axial direction having one end rotatably supported on the bottom of the body and the other end protruding from the body surface, and having a cam surface formed on a circumferential surface around the axis. And a plurality of movable contact springs which are arranged around the rotating shaft corresponding to the respective cam portions, and which are pressed and released by the cam surfaces of the corresponding cam portions according to the rotation angle of the rotating shaft. The fixed contacts that contact the movable contact of the movable contact spring when the movable contact springs are pressed and are released from the contact with the movable contact when the pressing drive is released are respectively provided in the first and second terminal portions. 3. An end portion of each movable contact spring is provided and fixed to a common terminal portion.
Or, in addition to the operation of the invention of 3, the switching of a plurality of stages can be performed without a drive mechanism using gears, the number of parts is small, the material cost and the processing cost are lower than those of the conventional one, and the gears are used. The structure is simpler than in the case where it is used, and it is easy to incorporate it into a vessel, and as a result, it can be manufactured at low cost.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the bottom of the container supporting one end of the rotating shaft is elastically contacted with the peripheral surface of the rotating shaft to reduce the rotation of the rotating shaft. A click feeling spring portion for giving a feeling is provided, and in addition to the effect of the invention of claim 4, a click feeling is obtained in the rotation operation of the rotating shaft, and the operation feeling is good.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects of the present invention, the dimensions of the body are made to correspond to the dimensions of the fixture mounting opening of the mounting frame for mounting and mounting. A locking means for locking and fixing to the outer peripheral portion of the body is provided, which can be arranged using a mounting frame similarly to the embedded wiring device, and can be connected to other wiring devices. In addition to being able to be installed side by side, the combination is also easy, and the usage is expanded.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS.

The operation switch (hereinafter abbreviated as “operation switch”) S for the heat ray detection type load control device of the present embodiment is
Mounting frame 2 made of synthetic resin for the large-sized continuous wiring device shown in FIG.
Having a container body 1 formed to have dimensions (three module dimensions) corresponding to the size of the instrument mounting opening 2a in the longitudinal direction (three module dimensions), and made of a molded product of a synthetic resin (thermosetting resin) having insulation properties. The body 1 is constructed by assembling a cover 1B made of a molded product of an insulating synthetic resin (a thermoplastic resin such as an ABS resin) attached to the body 1A and the body 1A.

The body 1A is formed with a bearing recess 4 for rotatably supporting one end of the rotating shaft 3 at the center of the bottom, and a set of terminal plates provided with fixed contacts 5 and 5 on one end at one end. A housing 7 for housing 6a, 6b is provided, and a housing 10 for housing a common terminal plate 9 for supporting and fixing the _two movable contact springs 8 ₁ , 8 ₂ is provided on the opposite side of the housing 7 at the substantially center. is there.

An inner cover 29 made of a synthetic resin molded product is attached to the opening side of the body 1A. The middle cover 29 has a pair of bosses 30 protruding toward the back side (the body 1A side).
30 are protruded, and the mounting screws 33, 33 inserted into the screw insertion holes 30a of the respective bosses 30, 30, are attached to the body 1A.
The inner cover 29 is fixed to the body 1A by screwing into the holes 36a of the bosses 36, 36 on the side. Middle cover 2
9, a shaft insertion hole 14 through which the distal end portion 3c of the rotating shaft 3 penetrates to the outside while being attached to the body 1A, and a rotation inside the body 1A of the shaft insertion hole 14. A bearing 15 is provided for rotatably supporting a shaft 3 a slightly below the tip of the shaft 3. An inner periphery of the bearing 15 has a shaft 3 a housed in the bearing 15. A stopper portion (not shown) is formed to control the rotation of the rotating shaft 3 to a certain range in contact with the step 16 provided on the outer peripheral portion.

When the cover 1B is attached to the body 1A, the locking projections 11, 11 projecting from both end surfaces of the body 1A are provided.
Locking pieces 13, 13 provided with locking holes 12, 12 for engaging
1 is protruded downward from both end faces in FIG. 1, and a substantially circular exposure hole 38 for exposing an operation handle 31 described later is provided in the center. Here, the locking projection 1
The end surfaces of the body 1A on the opening side of the body 1A are formed as inclined surfaces 11a inclined toward the opening side of the body 1A. Also, on both side surfaces of the cover 1B, three pairs of locking holes 27, 27,.
Two pairs of locking claws 28 corresponding to the two pairs of locking holes 27.
.. Are projected, and the body 1 is attached to the instrument mounting opening 2a of the mounting frame 2 by locking the two pairs of locking claws 28, 28 into the locking holes 27, 27 of the mounting frame 2. . In addition, locking recesses 40 for locking to the metal mounting frame 41 as shown in FIG. It is provided.

Below the shaft portion 3a of the rotary shaft 3, two layers of cam portions 17A and 17B are formed in the axial direction. The upper cam portion 17A is composed of a circular cylindrical portion having a horizontal cross-sectional shape concentric with the center of the rotating shaft 3 and a pair of spire portions projecting in a direction shifted by 135 degrees from the center of the cylindrical portion. The surface is composed of the circumferential surface of the cylindrical portion and the side surface of the spire portion, and the tip corner of one of the spire portions constitutes the pressing drive portion 170 of the movable contact spring. Also, the lower cam portion 1
7B has a semicircular semicircular portion having a horizontal cross section concentric with the center of the rotating shaft 3 and a rectangular prism portion having a rectangular horizontal cross section connected to the chord side of the semicircular body. A semicircular surface of the semicircular portion and three side surfaces of the prism portion, and a corner of the prism portion on the movable contact spring side constitutes a pressing drive portion 171 of the movable contact spring.

The storage portions 7 of the cam portions 17A and 17B are provided.
On the side, a movable contact spring 8 having one end fixed to a common terminal plate 9
_1, 8 ₂ their sides are parallel arranged to elastically contact the cam surface.

Here, the movable contact springs 8 ₁ , 8 ₂ arranged at the upper and lower positions are formed by punching a single spring plate material, and the base ends are connected to each other by connecting pieces 80. The connecting piece 80 is fixed by caulking 18 to a fixing piece 90 extending from the common terminal plate 9 to the center line of the body 1A.

The common terminal plate 9 is bent in a U-shape. The common terminal plate 9 is accommodated in the accommodating portion 10 with both side pieces facing downward, and accommodates the fixed piece 90 integrally connected to one side piece. It is led out of the storage section 10 through a gap 10 a formed in the partition wall of the section 10. Further, the other side piece is divided into two branches, and a lock spring 19 constituting a quick connection terminal is housed inside the one piece together with the one piece, and the one side piece is locked and connected by the lock spring 19 and the side piece. A release button 20 for releasing the locked state by pushing the locking springs 19 on both sides when the core wire of the electric wire is pulled off.
Is stored.

The jig insertion hole 22 for operating the electric wire insertion hole 21 and the release button 20 is provided at the bottom of the body 1A corresponding to the storage portion 10 so as to correspond to the quick connection terminal stored in the storage portion 10. Has been drilled. And the quick connection terminal accommodated in the accommodation part 10 comprises the common terminal part COM.

The movable contact springs 8 ₁ , 8 ₂ are formed by bending a front end portion of a side surface resiliently contacting the cam surface into a substantially Z shape so that a free end parallel thereto is away from the storage portion 7. The movable contacts 23, 23 provided on the terminal plates 6a, 6b disposed in the storage section 7 are opposed to the fixed contacts 5, 5.

The terminal plates 6a and 6b are of the same shape formed by bending a metal plate into a U-shape. When the terminal plates 6a and 6b are stored in the storage section 7, they are stored upside down so that both side pieces face each other. An L-shaped piece 60 extends from the leading edge of the side piece located on the center side of the body 1A, and extends out of the storage section 7 through a groove provided in a partition wall of the storage section 7 to form a groove. Storage section 7
The tip of the L-shaped piece 60 is arranged along the wall surface of the L-shaped piece.
Here, the L-shaped piece 60 of the terminal plate 6a extends from the upper side of the side piece, and the L-shaped piece 60 of the terminal plate 6b extends from the lower side of the side piece. Will be located below. A fixed contact 5 is provided at each tip,
On, so that the fixed contacts 5 arranged below the opposing top and the movable contact springs _81, 82 of the movable contact 23, 23 is positioned below.

The terminal plates 6a, 6b are provided inside the terminal plates 6a, 6b.
6b and the locking springs 19 ', 19' constituting the quick-connecting terminal, respectively, and when the core wire of the electric wire connected to the quick-connecting terminal is to be pulled off, it is housed inside the terminal plates 6a, 6b on both sides. A release button 20 ′ for releasing the locked state by pressing the locking springs 19 ′, 19 ′ is stored in the storage section 7. Also, a jig for operating the wire insertion hole 21 'and the release button 20' is inserted into the bottom of the body 1A corresponding to the storage section 7 so as to correspond to the two sets of quick connection terminals stored in each storage section 7. A hole 22 'has been drilled.

Thus, two sets of quick connection terminals are stored in the storage portion 7, and these quick connection terminals constitute the first terminal portion L and the second terminal portion M.

The horizontal section of the shaft 3b slightly above the lower end of the rotary shaft 3 fitted in the bearing recess 4 provided at the center of the bottom of the body 1A is formed in a regular octagonal shape and parallel through the center. A pair of parallel leaf springs 24, 24 are arranged so that a pair of peripheral surfaces of the shaft portion 3b contact the respective peripheral surfaces when the rotating shaft 3 rotates to a position orthogonal to the longitudinal direction of the body 1A. , The rotation of the rotation shaft 3 is articulated, and a click feeling is given to the rotation operation.

That is, when the rotating shaft 3 rotates, the leaf springs 24, 24 are pushed and expanded as the peripheral surface of the rotating shaft 3 of the parallel leaf springs 24, 24 rotates, and the opening angle of the leaf springs 24, 24 is increased. However, after the line connecting one corner portion facing through the center becomes maximum at a position orthogonal to the parallel leaf springs 24, 24, the pushing force of the rotating shaft 3 rapidly decreases and again. Since the state returns to the original state, a click feeling can be obtained from a drop in the operating force when there is a pushing force and when there is no pushing force.

Here, the leaf springs 24, 24 are formed by both side pieces of a U-shaped spring body 25 obtained by bending a leaf spring material into a U-shaped cross section, and the spring body 25 is a square hole 25 opened in the center piece.
a is inserted on ribs 26, 26 projecting integrally from the bottom of the body 1A on both sides of the bearing recess 4, and is mounted on the body 1A. The displacement is prevented, and the leaf springs 24, 24 are in contact with the peripheral surface of the shaft portion 3b of the rotating shaft 3, thereby preventing the displacement in the vertical direction.

The inner surfaces of the ribs 26, 26 are
It has a concave curved surface that is in sliding contact with the peripheral surface of the upper rotating shaft 3.

The respective members are assembled into the body 1A, and the end 3c of the rotating shaft 3 is inserted into the shaft insertion hole 1 of the middle cover 29.
The middle cover 29 is attached to the body 1A side so as to protrude outward from the body 4, and the middle cover 29 is fixed to the body 1A by the mounting screws 33, 33 as described above.

Thus, the middle cover 29 is attached to the body 1A.
After that, the tip 3c of the rotating shaft 3 protruding upward from the middle cover 29 is inserted into an insertion hole 32 formed on the back surface of the operating handle 31, and the operating handle 31 is fitted on the tip 3c of the rotating shaft 3. Insert. Here, the cross-sectional shape of the distal end portion 3c is a semicircular shape, the cross-sectional shape of the insertion hole 32 is formed so as to correspond to the semicircular shape, and the rotating shaft 3 can be rotated by rotating the operation handle 31. It has become. In this state, the operating handle 31 is moved in the axial direction.
Moves and comes off the rotating shaft 3.

Then, the cover 1B is attached to the body 1A from above the middle cover 29 in a state where the operation handle 31 is inserted on the rotating shaft 3. At this time, while the lower end of the locking piece 13 is guided by the inclined surface 11a formed at the upper end of the locking projection 11,
Riding on the locking projection 11, the cover 1B further covers the body 1.
By being pushed to the A side, the locking projection 11 engages with the locking hole 12 of the locking piece 13, and the cover 1B is fixedly connected to the body 1A. That is, the body 1A and the cover 1B can be assembled with one touch, and the assembly is extremely easy as compared with the conventional example using the assembly frame 54.

A flange-shaped projection 34 having an outer diameter larger than the inner diameter of the exposure hole 38 of the cover 1B is formed at the lower end of the operation handle 31 so as to protrude, and as shown in FIG. A step 35 is provided on the peripheral edge on the back side of the rear surface 38, and the cover 1 </ b> B is attached to the middle cover 29 so that the projection 34 is locked to the step 35, so that the operation handle 31 is rotatable and axially Of the operating handle 31 is prevented. In addition, as shown in FIG. 2, the common terminal portion CO is provided on the peripheral edge of the surface of the exposed hole 38 of the cover 1B in accordance with the rotational position of the operation handle 31.
Characters ("OFF", "AUTO" and "CONTINUOUSLY ON") indicating the connection state between M and the first and second terminals L and M are shown.

The operation switch S completed in this manner is used by being mounted on the mounting frame 2 shown in FIG. 1 similarly to the embedded wiring device. In this case, the central projecting portion 3 of the body 1 is positioned from the back side of the mounting frame 2 with respect to the appliance mounting opening 2a of the mounting frame 2.
9, and the pair of locking claws 28 on both sides are engaged with the corresponding pair of locking holes 27 of both side frame pieces 2 A of the mounting frame 2 from the back side of the frame piece 2 A by this pressing. 1 is fixed to the mounting frame 2.

After fixing the operation switch S, the plate frame 42 is attached to the front side of the mounting frame 2. The plate frame 42 is made of a vertical piece 4 made of an insulating synthetic resin.
3. A rectangular frame integrally formed with a bellows-shaped mounting piece 46 having a horizontal piece 44 shorter than the vertical piece 43 and a screw insertion hole 46a through which a mounting screw 45 for mounting to the mounting frame 2 is inserted. An opening 47 for exposing the surface of the operation switch S attached to the attachment frame 2 to the front side is formed at the center thereof.

A plate 48 is attached to the front surface of the plate frame 42 in order to improve the appearance of the decoration or design. This plate 48 is made of a synthetic resin molded product, and has an exposure window 49 that exposes a central projection 39 of the operation switch S at substantially the center as shown in FIG. In addition,
Attachment of the plate 48 is performed by attaching locking projections (not shown) projecting from four corners of the rear surface of the plate 48 to the plate frame 42.
The locking is performed by locking the locking recesses 42a provided at the four corners of.

Next, the operation of this embodiment will be described with reference to FIG.

[0049] FIG. 7 (a) is in a state in contact with the movable contact spring ₈₁ to the side of spiers site of the upper cam portion 17A bullet as shown in (a), in this state, the movable contact springs 8 ₁
Is not in contact with the fixed contact 5. Also,
In a state in which the movable contact spring ₈₂ on the peripheral surface of the semi-cylindrical portion of the lower cam portion 17B as shown in FIG. (B) is in elastic contact, in this state, the movable contact spring ₈₂ of the movable contact 23 Are not in contact with the fixed contact 5. That is, the common terminal plate 9 is not energized between any of the first and second terminal plates 6a and 6b.
Is completely disconnected from the commercial power supply AC, and the lighting load 70 can be turned off regardless of the control operation of the heat ray detection type load control device X. The rotation position of the rotating shaft 3 is set to, for example, the “off” state of the heat ray detection type load control device X.

Next, when the operation handle 31 is rotated clockwise to rotate the rotary shaft 3 clockwise by 45 degrees, each cam portion 17 is rotated.
A and 17B also rotate to the state shown in FIG. In this case, the second movable contact on the sides of the prismatic portion of the lower cam portion 17B together with the first movable contact spring ₈₁ by the upper cam portion 17A one of the press drive portion 170 of the spire sites are driven pressed in a state where the spring ₈₂ is Tamasawa, in this state, only the movable contact 23 of the movable contact spring ₈₁ is in contact with the fixed contact 5. That is, the current is applied between the common terminal plate 9 and the terminal plate 6b corresponding to the upper fixed contact 5, and the load terminals F ₁₃ and F ₁₃ of the heat ray detection type load control device X are described as in the conventional example. _{Since the} lighting load 70 is connected between _{14, the} power supply from the commercial power supply AC to the lighting load 70 can be controlled by the heat ray detection type load control device X. The rotational position of the rotating shaft 3 is set to, for example, the “automatic” state of the heat ray detecting load control device X.

When the operating handle 31 is further rotated clockwise to rotate the rotating shaft 3 clockwise by 45 degrees, each cam portion 17 is rotated.
A and 17B rotate to the state shown in FIG. In this case, the second movable contact by press drive portion 171 of the prism portions of the lower cam portion 17B together with the movable contact spring ₈₁ to the side of spiers site of the upper cam portion 17A is elastically contacted spring 8
₂ is pressed and driven. In this state, only the movable contact 23 of the _second movable contact spring 82 is in contact with the fixed contact 5. That is, the common terminal plate 9 and the lower fixed contact 5
Is in a state of being energized with the terminal plate 6a corresponding to
As described in the conventional example, the lighting load 70 is connected to the commercial power supply AC via the heat ray detection type load control device X and the operation switch S.
The lighting load 70 can be turned on regardless of the control operation of the heat ray detection type load control device X. The rotational position of the rotating shaft 3 is set to, for example, the “continuously entering” state of the heat ray detection type load control device X.

By turning the operation handle 31 clockwise by 45 degrees from the "OFF" state in this manner, the common terminal COM is connected to both the first and second terminals L and M. State ("off" state), a state in which the common terminal section COM is connected to the first terminal section L ("automatic").
) And the state in which the common terminal section COM is connected to the second terminal section M (the “continuous input” state).

If the operation handle 31 is to be further rotated clockwise from the "continuously in" rotation position, the step 16 of the rotating shaft 3 hits the stopper in the bearing 15 and restricts further rotation. I do.

When the operating shaft 31 is rotated counterclockwise to rotate the rotating shaft 3 counterclockwise, the operation state of the heat ray detection type load control device X is switched every time the rotating shaft 3 is rotated by 45 degrees, and the "continuous inputting" is performed. When it is rotated 90 degrees from the rotation position of "", it returns to the original "off" position. At this time, the step 16 on the side opposite to the step 16 in the rotation direction hits the corresponding stopper, and restricts further rotation.

[0055]

The invention according to claim 1 is connected to a heat ray detection type load control device which detects a heat ray radiated from a human body and controls power supply from a power source to a load according to the presence or absence of a person in a detection area, A common terminal portion connected to one output terminal of the heat ray detection type load control device via a load, a first terminal portion connected to the other output terminal of the heat ray detection type load control device,
A second terminal connected to one end of the power supply, a state in which the common terminal is connected to the first terminal, a state in which the common terminal is connected to the second terminal, and connection to any of the first and second terminals; A switching mechanism for selectively switching to a non-conducting state is provided in the body, and the body is formed of a body and a cover formed of a synthetic resin into a substantially box shape, and one outer surface of the body or the cover is formed. One or a plurality of locking projections are provided on the other of the body or the cover, and one or a plurality of locked parts that are elastically displaced over the respective locking projections and locked by the locking projections are provided on the other of the body or the cover. Since the body and cover are joined by each locked part going over the locking projection and being locked to the locking projection, the body can be easily assembled with one touch. Assembly work is simplified, and each terminal Since the connection state is switched, the number of parts can be reduced and material loss can be reduced as compared with the case where a commercially available switch unit is used as in the conventional example. As a result, assembly is facilitated and manufacturing cost is reduced. There is an effect that can be achieved.

According to a second aspect of the present invention, the locked portion has a locking hole to be locked to the locking projection, and the locking portion is elastically displaced over the locking projection when the body and the cover are assembled. Since it is composed of one piece, the same effect as the first aspect of the invention can be obtained.

According to the third aspect of the present invention, the end face of the locking projection that the locking piece contacts when the body and the cover are assembled is formed as an inclined surface that is inclined toward the joint surface between the body and the cover. In addition to the effects of the invention, there is an effect that the inclined surface makes it easier for the locking pieces to get over the locking projections, and further facilitates assembly.

According to a fourth aspect of the present invention, the switching mechanism comprises a cam portion having one end rotatably supported at the bottom of the body and the other end protruding from the surface of the body, and having a cam surface formed around the axis. The pressing drive and the release of the pressing drive are performed by the cam surfaces of the corresponding cam portions according to the rotation angle of the rotating shaft and the corresponding cam portions disposed around the rotating shaft in accordance with the rotation angle of the rotating shaft. A fixed contact that contacts the movable contact of the movable contact spring when each movable contact spring is pressed and is released from contact with the movable contact when the pressing drive is released. Since one end of each of the movable contact springs is fixed to the common terminal part and is provided at each of the two terminal parts, in addition to the effect of the invention according to claim 1 or 2, there is no drive mechanism using gears. Multiple stages can be switched, the number of parts is small,
In addition, the material cost and processing cost are lower than those of the conventional one, and the structure is simpler than the case where the upper gear is used. .

According to a fifth aspect of the present invention, a click-feeling spring is provided on the bottom of the body supporting one end of the rotary shaft to elastically touch the peripheral surface of the rotary shaft to reduce the rotation of the rotary shaft to give a click feel. Since the unit is provided, in addition to the effect of the invention of claim 4, there is an effect that a click feeling is obtained in the rotation operation of the rotating shaft, and the operation feeling is improved.

According to a sixth aspect of the present invention, the dimensions of the body are made to correspond to the dimensions of the instrument mounting opening of the mounting frame for embedded installation, and the locking means for locking and fixing to the mounting frame is provided. Since it is provided on the outer periphery of the body, it can be installed using a mounting frame like an embedded wiring device, and it can be installed together with other wiring devices, and the combination becomes easy, This has the effect of widening its use.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment.

FIG. 2 is a front view of the same.

FIG. 3 is a sectional view taken along an arrow EFG in FIG. 2;

FIG. 4 is an ABD cross-sectional view of FIG. 2;

FIG. 5 is a front view showing a state where the middle cover and the cover are removed.

FIG. 6 is a back view of the above.

FIG. 7 is an operation explanatory diagram of the above.

FIG. 8 shows a state where the above is mounted on a metal mounting frame;
(A) is a front view, (b) is a side view.

FIG. 9 is a block diagram showing a heat ray detection type load control device.

FIG. 10 is a wiring diagram of an operation switch and a heat ray detection type load control device.

11A and 11B show a state of being mounted on a conventional metal mounting frame, where FIG. 11A is a front view, FIG. 11B is a side view, and FIG. 11C is a bottom view.

FIG. 12 is a front view showing a state in which the cover is removed.

FIG. 13 is a rear view showing a state where the display device is mounted on the metal mounting frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 1A Body 1B Cover 11 Locking protrusion 12 Locking hole 13 Locking piece

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Satoshi Tanaka 2856 Shiratsuka-cho, Tsu-shi, Mie Asahi Denki Kogyo Co., Ltd. F term (reference) 5G019 AA01 AF33 AM10 CY06 CY23 CY34 KK10 LL01 SK13 SY04 5G052 AA11 BB10 HA01 HA14 HB05 HC08

Claims (6)

[Claims] 1. A heat ray detection type load control device which detects a heat ray radiated from a human body and is connected to a heat ray detection type load control device which controls power supply from a power supply to a load according to the presence or absence of a person in a detection area. A common terminal connected to one of the output terminals via a load, a first terminal connected to the other output terminal of the heat ray detection type load control device, and a second terminal connected to one end of the power supply And a switching mechanism section for selectively switching between a state in which the common terminal section is connected to the first terminal section, a state in which the common terminal section is connected to the second terminal section, and a state in which the common terminal section is not connected to any of the first and second terminal sections. And a cover formed of a substantially box-shaped body made of synthetic resin, and one or more locking projections are provided on one outer surface of the body or the cover. And put each locking projection on the other side of the body or cover. An operation switch for a heat ray detection type load control device, comprising one or more locked parts which are elastically displaced beyond and are locked by the locking projections. 2. The locked portion has a locking hole to be locked to the locking projection, and is formed of a locking piece that is elastically displaced over the locking projection when the body and the cover are assembled. The operation switch for a heat ray detection type load control device according to claim 1. 3. An end face of a locking projection to which a locking piece abuts when assembling the body and the cover is formed as an inclined surface inclined toward a joint surface between the body and the cover. Operation switch for heat ray detection type load control device. 4. A switching mechanism having a plurality of cam portions having one end rotatably supported at the bottom of the body and the other end protruding from the surface of the body and having a cam surface formed on a peripheral surface around the axis, in the axial direction. A plurality of movable contacts that are arranged corresponding to each cam portion around the shaft and the rotation shaft, and are pressed and released by the cam surface of the corresponding cam portion according to the rotation angle of the rotation shaft. A fixed contact that is in contact with the movable contact of the movable contact spring when each movable contact spring is pressed and is released from contact with the movable contact when the pushing drive is released, in the first and second terminal portions. 3. The movable contact spring according to claim 1, wherein one end of each movable contact spring is fixed to the common terminal.
Or an operation switch for the heat ray detection type load control device according to 3. 5. A click-feeling spring portion for providing a click feeling by elastically contacting the peripheral surface of the rotating shaft to attenuate the rotation of the rotating shaft is provided at a bottom portion of the body supporting one end of the rotating shaft. The operation switch for a heat ray detection type load control device according to claim 4, characterized in that: 6. The dimensions of the body correspond to the dimensions of the instrument mounting opening of the mounting frame for embedding and disposing, and locking means for locking and fixing to the mounting frame is provided on the outer peripheral portion of the body. The operation switch for a heat ray detection type load control device according to claim 1, wherein the operation switch is provided.