JP3356567B2 - Wireless receiver for remote monitoring and control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a plurality of terminals to a transmission control device via a two-wire signal line and for transmitting data between the transmission control device and the terminals by a time-division multiplexing transmission method. The present invention relates to a wireless receiver for a remote monitoring and control system that is used in a remote monitoring and control system configured to control a load by exchanging data and that functions as a terminal device that receives a wireless signal by light.

[0002]

2. Description of the Related Art Conventionally, a load control system using a remote monitoring control system for controlling loads such as lighting loads has been proposed. For example, as shown in FIG. 10, an operation terminal 42 having a switch SW and a control terminal 43 for controlling a lighting load L are branched and connected to a two-wire signal line Ls, and are operated through the signal line Ls. There is proposed a configuration in which a communication terminal 42 and a control terminal 43 are connected to a transmission control device 41.

In such a remote monitoring and control system, each transmission terminal 41 transmits a transmission signal Vs having a format as shown in FIG.
Data is exchanged with the communication devices 2 and 43. That is, the transmission signal Vs includes a start pulse ST indicating the start of signal transmission,
Mode data MD indicating the mode of the signal, terminals 42 and 4
Address data AD for individually recognizing 3, control data CD indicating the control contents for the lighting load L, and error correction code C such as checksum data for detecting a transmission error.
S, a bipolar (± 24 V) time-division multiplexed signal including a signal return period WT for setting a return period from the terminals 42 and 43, and data is transmitted by pulse width modulation (FIG. 11 (b)). Each terminal unit 42, 43
When the address included in the address data AD of the transmission signal Vs received via the signal line Ls matches an address set in advance, the transmission signal Vs
s of control data CD and the transmission signal Vs
The monitoring data is returned as a current mode signal (a signal transmitted by short-circuiting the signal line Ls via an appropriate low impedance) in synchronization with the signal return period WT.

On the other hand, the transmission control device 41 is provided with a dummy signal transmitting means and an interrupt processing means. The dummy signal transmitting means constantly transmits a transmission signal Vs in which the mode data MD is set to the dummy mode and the address data AD is cyclically changed. Further, the interrupt processing means, when an interrupt signal Vi as shown in FIG. 11C is generated from the operation terminal 42 in synchronization with the start pulse ST of the transmission signal Vs in the dummy mode, the operation terminal 42 And the address data is returned as monitoring data together with the monitoring data.

When the transmission control device 41 receives the address data from the operation terminal device 42 as described above,
The control data CD to the control terminal 43 in which the correspondence by the address is set in advance is created based on the monitoring data, and time-division multiplexed via the signal line Ls. That is, the lighting load L connected to the designated control terminal 43 is turned on / off, or dimmed according to the control data CD. The power for operating the operation terminal 42 and the control terminal 43 is obtained by full-wave rectification of the transmission signal Vs. In the dimming control, a control terminal 43 capable of dimming control is used, and a dimming level is instructed by control data.

The above operations can be summarized as follows.
When the switch SW is operated, the transmission signal Vs is transmitted to the signal line Ls when the switch SW is operated, and the transmission signal Vs is transmitted in the transmission control device 41 which receives the interruption signal Vi. The monitoring data and the address data corresponding to the control of L are received. Transmission control device 41
Stores the address data of the other party to which the control data CD should be transmitted in response to the received address data. By transmitting the transmission signal Vs including the address data AD, the control data CD is transmitted to the target control terminal 43. Can be transmitted to control the lighting load L.

By the way, the present inventors have previously proposed that the use of a wireless signal using light such as infrared light instead of the above-mentioned operation terminal 42 eliminates the need for wiring of an operation section having a switch SW. (Japanese Patent Application No. 3-24397)
No. 3). That is, a wireless receiver 44 having a function as an operation terminal device 42 and receiving a wireless signal from the outside is arranged on a ceiling surface or the like, and a wireless signal is transmitted by a wireless switch 45 provided with a switch SW by operating the switch. When the wireless receiver 44 receives a wireless signal, the wireless receiver 44 transmits monitoring data corresponding to the operation of the switch to the signal line Ls.

In the above configuration, in order to mount the wireless receiver 44 on the ceiling, the case 1 having the structure shown in FIG.
Is used. That is, the case 1 includes a disk-shaped body 11 serving as a flange portion, and a cover 12 serving as a main body portion coupled to the center of the upper surface of the body 11, and the body 11 and the cover 12 are inserted from the cover 12 and inserted into the body. 11 are connected by a pair of assembling screws 13 which are screwed into the same. Body 1
A circuit board 14 formed of a printed circuit board on which a terminal processing unit for realizing the above-described operation is mounted is accommodated in a space surrounded by the cover 1 and the cover 12. Also, the circuit board 1
A light receiving module 15 having a light receiving element for receiving a wireless signal is mounted on a lower surface side of 4 as a light receiving unit. A circular opening window 11a is formed in the center of the body 11 at a position corresponding to the light receiving module 15, and the opening window 11a is formed.
In a, an infrared transmission filter 16 and a light receiving lens 17 are fitted and held. The circuit board 14 has lead wires 18.
And a pair of terminals 19 for connecting the signal line Ls, which has terminal screws exposed on the upper surface of the case 1 through the terminals. The terminal 19 is covered with a flat terminal cover 20 that covers the upper surface of the cover 12, and the terminal cover 20 is detachably fixed with fixing screws 21 screwed to the cover 12.

A pair of insertion holes 22 are formed in the periphery of the body 11, and a fixing screw 23 is inserted through each of the insertion holes 22. A mounting bracket 24 is inserted through an intermediate portion of the fixing screw 23, and a nut 25, which is prevented from rotating with respect to the mounting bracket 24, is screwed into a distal end of the fixing screw 23. The base end of the mounting bracket 24 is pivotally attached to a bearing 26 provided on the upper part of the cover 12, and the distal end can change the distance from the periphery of the body 11. In addition, a return spring 27 formed of a wire spring is connected to the mounting bracket 24, and the distal end portion is urged in a direction away from the peripheral portion of the body 11.

Therefore, when the case 1 is fixed to a ceiling surface or the like, as shown in FIG. 13, a mounting hole 3 large enough to allow the cover 12 and both mounting brackets 24 to be inserted into the ceiling plate 2 as a mounting plate. By perforating and loosening the fixing screw 23, the tip of the mounting bracket 24 is separated from the body 11 by the spring force of the return spring 27 (that is,
The distance between the tips of the mounting brackets 24 is reduced). In this state, the body 11 and the mounting bracket 24 are inserted into the mounting holes 3, and the upper surface of the body 11 is brought into contact with the surface of the ceiling plate 2.
Next, when the fixing screw 23 is tightened, the distal end of the mounting bracket 24 approaches the peripheral portion of the body 11, and the ceiling plate 2 is formed between the peripheral portion of the body 11 and the mounting bracket 24 at the peripheral portion of the mounting hole 3. Can be clamped.

After fixing the case 1 to the ceiling plate 2 as described above, a decorative plate 28 is attached so as to cover the lower surface of the body 11. The decorative plate 28 has a circular window hole 28 a corresponding to the light receiving lens 17, and is formed so as to cover another portion of the body 11. By forming the case 1 in the shape described above, the case 1 can be easily attached to an attachment plate such as a ceiling panel. The body 11 also has a pair of fixing holes 29 for inserting a box screw screwed into the embedding box so as to cope with a case where an embedding box such as a switch box for wiring equipment is embedded in the ceiling. Is formed.

[0012]

If the case 1 having the above structure is used, the case 1 is tightened by fastening the fixing screw 23.
Can be fixed to the mounting plate, and the mounting work of the case 1 is relatively easy. However, when the case 1 is inserted into the mounting hole 3 formed in the ceiling plate 2, the fixing screw 23 is loosened and the mounting bracket 24 is set up. When the case 1 is fixed to the ceiling plate 2, the mounting bracket 24 is expanded horizontally, so that there is an inconvenience that the amount of rotation of the fixing screw 23 when attaching and detaching the case 1 becomes extremely large. Further, a fixing hole 29 for inserting a box screw is formed, and the mounting bracket 24 is removed from the case 1 at the time of construction using the embedding box.
When the is removed from the case 1, the fixing screw 23, the nut 25, and the return spring 27 come off from the mounting bracket 24, and the work of reassembling is troublesome, and the parts are easily dissipated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to shorten the work time required for attaching and detaching work to and from a mounting plate to further facilitate construction, and to reduce the peripheral portion of the mounting hole. Provided is a wireless receiver for a remote monitoring and control system in which a mounting member does not dissipate when a fixing method different from a fixing method in a sandwiched state is adopted, and the mounting member can be easily attached and detached. Is to do.

[0014]

According to a first aspect of the present invention, a plurality of terminals each having an address individually set are branched and connected to a transmission control device via a two-wire signal line.
The terminal unit is individually accessed by transmitting a transmission signal containing address data to the signal line in a time division multiplex transmission system, and monitoring data generated by any terminal unit during a signal return period set in synchronization with the transmission signal. When the control data is received, the control data is generated based on the monitoring data, and the control data is transmitted to another terminal in which the correspondence between the terminal and the terminal that generated the monitoring data is set in advance and connected to the terminal. A wireless receiver for use in a remote monitoring and control system for controlling a load, comprising: a light receiving unit that receives a wireless signal by light; and a monitoring data created based on the wireless signal received by the light receiving unit and transmitted to a signal line. The case has a built-in terminal processing unit, and the case has a flange part that contacts the periphery of the mounting hole drilled in the mounting plate and a flange part And a fixing block pieces had a tongs part for holding the mounting plate between the freely have been attached is inserted into the mounting hole flange detachable, fixed block,
Mounting holes that are detachably attached to the flange and stand upright
With an opening on the outer periphery of the flange.
And a column that is arranged along the length of the column
Screw that is rotatably fixed and screwed into the mounting screw
Protruding from the opening surface of the column with the rotation of the mounting screw
A pinch that moves in the longitudinal direction of the column in the
Attach to the side wall farther from the flange on the body
Allow the pinch to rotate around the screw and insert the pin
A notch is formed to retract to a position where it does not protrude from the opening.
The flanges are attached to the parts corresponding to each column.
Each pair of hook holes running from the circumferential side to the inner circumferential side is formed.
The pillars are slid in the hook holes at the ends on the flange side.
A pair of hooking pieces that are freely engaged with the
To regulate the sliding range of the hook and
Stopper with a step that can be attached to and detached from the hook hole
Is formed .

[0015]

According to the second aspect of the present invention, an address is separately set for each.
Transmission control over a specified number of terminals via a two-wire signal line.
Branch connection to the control device, and the transmission control device
A transmission signal containing a time-division multiplex to the signal line
Access each terminal individually to transmit signals.
Synchronize with any terminal during the set signal return period
When the generated monitoring data is received, it is controlled based on the monitoring data.
Control data, and the terminal and
Other terminals for which the correspondence by
Control data is transmitted to the terminal and connected to that terminal.
Used in remote monitoring and control systems to control
Wireless receiver that receives wireless signals by light
Based on the wireless signal received by the
Terminal processing unit that creates monitoring data and sends it to the signal line
And a case with a built-in
The flange that contacts the periphery of the mounting hole
Multiple are detachably attached and inserted into the mounting holes
A fixed plate with a clip that clamps the mounting plate between it and the flange
A fixed block, wherein the fixed block is detachably attached to the flange portion, is inserted into the mounting hole, is inserted into the mounting hole, and has an opening surface on the outer peripheral side of the flange portion; A holding shaft that is arranged to be able to advance and retreat in the direction and is rotatable with respect to the column, and a holding piece that is movable in the longitudinal direction of the column while the holding shaft is inserted and protrudes from the opening surface of the column, A pressing spring for inserting the holding piece through the holding shaft and biasing the holding piece closer to the flange portion with respect to the column body; and a holding piece against the pressing spring on an end side wall of the pillar body that is farther from the flange portion. A notch is formed to allow rotation of the pinch piece about the holding shaft when the button is pressed away from the flange portion and to retract the pinch piece to a position where it does not protrude from the opening surface of the column. .

According to a third aspect of the present invention, a driver groove for receiving a tip portion of a driver is formed on an end surface of the holding shaft on the flange side. According to the invention of claim 4 , the flange portion is formed with a pair of hook holes running from the outer peripheral side toward the inner peripheral side at portions corresponding to the respective columns, and the column is formed at the end on the flange side. A pair of hook pieces slidably engaged in each hook hole are provided in a protruding manner, and a stopper for regulating a sliding range of the hook piece is formed in the hook hole.

[0018]

According to the construction of the first aspect of the present invention, a plurality of fixed blocks are detachably attached to the flange portion, and each fixed block is provided with a clip piece for holding the mounting plate between the fixed block and the flange portion. Therefore, if necessary, simply attach the fixing block to the flange part, not only the fixing method of clamping the peripheral part of the mounting hole formed in the mounting plate with the flange part and the holding piece, but also remove the fixing block. Therefore, it is possible to easily cope with other fixing methods.

[0019] Moreover, fixed block includes a columnar body having an open face on the outer peripheral side of the flange portion while being inserted into freely mounted to the mounting holes detachably in a manner erected on the flange portion, the longitudinal of the cylindrical body A mounting screw which is arranged along the direction and is rotatably fixed to the column, and which is screwed to the mounting screw and protrudes from the opening surface of the column with the rotation of the mounting screw, and In the column, the end side wall remote from the flange portion in the column is allowed to rotate around the mounting screw so that the pin does not protrude from the opening surface of the column. Since the notch portion to be retracted is formed, each component constituting the fixed block will be connected by the column, and by detaching the column to the flange portion, without disassembling other components individually The fixed block can be separated from the case . That is, the work of attaching and detaching the fixing block is facilitated. In addition, the notch is formed with a notch so that the notch is retracted to a position where it does not protrude from the opening surface of the pillar when the mounting plate is not held between the flange and the flange. The difference between the maximum value and the minimum value of the thickness of the various mounting plates is only required, and the amount of rotation of the mounting screws when attaching and detaching to and from the mounting plate can be reduced as compared with the conventional configuration. That is, the amount of work for attaching and detaching is reduced, and the attaching and detaching work is easier than in the conventional configuration. Addition
The flange is formed from the outer circumference to the inner circumference.
The hook piece provided on the pillar is slidably engaged with the hook hole
And the sliding range of the hooking piece is inside the hooking hole.
The hook can be attached to and detached from the hook hole
Since a stopper with a level difference of about
Position the fixed block at the desired position according to the size of the hole
And can be used to regulate the slide range.
By installing the topper, it can be installed in the mounting hole with standard dimensions.
When attaching, the proper position of the fixed block is easily understood
Attach the fixed block to the body
Prevents the column from easily falling off the body
Can be stopped.

According to the construction of the second aspect of the present invention, the flange
Multiple fixed blocks are detachably attached to the part, and each fixed
Holder for holding the mounting plate between the block and the flange
Since a piece is provided, if necessary,
Just by attaching the fixed block, the mounting formed on the mounting plate
How to fix the periphery of the hole between the flange and the clip
Of course, if you remove the fixing block, it is easy to use other fixing methods
Can be handled. In addition, the fixed block is detachably attached to the flange portion, and is inserted into the mounting hole . The fixed block has an opening surface on the outer peripheral side of the flange portion. A holding shaft that is rotatable with respect to the pillar, is disposed in the holding member, and a holding piece that is inserted in the holding shaft and that is movable in the longitudinal direction of the pillar while protruding from the opening surface of the pillar, and the holding shaft is inserted. And a pressing spring for urging the holding piece toward the flange portion with respect to the pillar body, and the holding piece is moved from the flange portion against the pressing spring on the end side wall of the pillar body that is farther from the flange portion. The invention according to claim 2, wherein a notch is formed to allow the pinch piece to rotate about the holding shaft and to retract the pinch piece to a position where it does not protrude from the opening surface of the column when pressed in a direction away from the column. Similarly, each component of the fixed block is a column Would be more binding, by attaching and detaching the column body to the flange portion can be separated from the case of the fixed block without disassembling individually other components. That is, the work of attaching and detaching the fixing block is facilitated. In addition, the holding piece can be retracted to a position where it does not protrude from the opening surface of the pillar when the mounting plate is not held between the holding piece and the flange portion, and the holding piece is urged by the pressing spring in a direction approaching the flange portion. Therefore, in order to fix the mounting plate to the flange, the clamping plate retracted to the notch is rotated, and the clamping plate approaches the flange by the spring force of the pressing spring. When the case is to be removed from the mounting plate, on the contrary, it is sufficient to push the holding piece away from the flange part against the spring force of the pressing spring and then retract it to the notch. Therefore, the mounting work is easier than when the mounting screw is used as in the first aspect of the present invention.

According to the configuration of the third aspect of the present invention, the third aspect
Since the driver groove for receiving the tip of the driver is formed on the end surface of the holding shaft on the flange side, the use of a driver as a normal tool without the need for a special tool is possible. The case can be attached and detached. According to the configuration of the fourth aspect of the present invention, the hook pieces provided on the column are slidably engaged with the hook holes formed in the flange portion from the outer peripheral side to the inner peripheral side. Since a stopper for regulating the sliding range of the hooking piece is formed in the inside, the fixing block can be located at a desired position according to the size of the mounting hole, and a stopper for regulating the sliding range is provided. This makes it possible to easily find the proper position of the fixing block when mounting in a mounting hole having a standard size.

[0022]

【Example】

(Embodiment 1) This embodiment has the configuration shown in FIGS. That is, members having the same reference numerals as those of the conventional configuration shown in FIG. 12 have the same functions, and only the member for fixing the case 1 to the mounting plate is different from the conventional configuration. Therefore, the following mainly describes this difference.

In this embodiment, a pair of fixing blocks 30 detachably attached to the peripheral portion of the body 11 are used as means for fixing the case 1 to the mounting plate. The fixed block 30 includes a prism 31 having a prism shape, and one side surface of the pillar 31 is an opening surface 31a. The column body 31 holds an attachment screw 32 so as to penetrate vertically. The mounting screw 32 has a head at a lower end, and an E-ring is attached to an upper end to prevent the column 31 from coming off. That is, the mounting screw 32 is allowed to rotate with respect to the column 31, but is prevented from falling off from the column 31. A clip 33 whose one end can protrude from the opening surface 31 a of the column 31 is screwed to the mounting screw 32. Therefore, when the mounting screw 32 is rotated with one end of the sandwiching piece 33 protruding from the opening surface 31a, the mounting screw 3
The pinch piece 33 moves up and down in accordance with the rotation direction of No. 2. In a state where the sandwiching piece 33 protrudes from the opening surface 31a, the sandwiching piece 33 comes into contact with the inner peripheral surfaces of both side walls of the column 31 and is prevented from rotating.

A notch 31b is formed at the upper end of one side wall of the column 31 so as to retract the sandwiching piece 33 so as not to protrude from the opening surface 31a. Since the mounting screw 32 is a right-hand screw, the notch 31b is formed on the left side wall when the opening surface 31a of the column 31 is viewed from the front, and the notch 31b is formed.
When the mounting screw 32 is rotated clockwise from the state in which the holding piece 33 is retracted to b, the tip of the holding piece 33 is
It moves downward while projecting from 1a. Conversely, when the mounting screw 32 is rotated counterclockwise in a state where the tip of the clip 33 protrudes from the opening surface 31a, the clip 33 rises,
When it is raised to a position corresponding to the notch 31b, the clip 33
Rotates and is introduced into the notch 31b.

A pair of left and right hooking pieces 31 are provided on the lower surface of the column 31.
c is projected. The side part closer to each other (the inner side part of the hooking piece 31c) among the side parts of the both hooking pieces 31c is separated from the lower surface of the column 31 and between the lower surface of the column 31 and the hooking piece 31c. Is formed with a gap. Further, the hooking pieces 31c protrude forward from the opening surface 31a of the column 31. The fixing block 30 is fixed to the body 11 by engaging the hook 31c with the body 11.

A pair of hook holes 35 running from the outer peripheral portion toward the inner peripheral portion are formed in the upper surface peripheral portion of the body 11 in correspondence with the mounting positions of the fixed blocks 30. Hook hole 3
As shown in FIGS. 3 and 4, the locking piece 3 is provided on the side edge of the pair of hook holes 35 which is closer to each other.
6 are protrudingly provided. The engaging piece 36 is formed at the inner peripheral end of the body 11 in the engaging hole 35, and the outer peripheral end of the engaging hole 35 has a width substantially equal to the engaging piece 31 c provided in the column 31. . Therefore, the hook 31c is connected to the body 1
When the gap between the lower surface of the column 31 and the hook 31c is brought into engagement with the locking piece 36 by being introduced into the hook hole 35 from the outer peripheral side of the body 1, the body 11 is prevented from moving vertically. Can be attached to Hook hole 35 is hook piece 31
c is long enough to slide and move.
At this time, the opening surface 31 a of the column 31 faces the outer peripheral side of the body 11.

4 and 5, a stopper 37 is formed at the portion of the hook hole 35 where the hook piece 31c is introduced. The stopper 37 allows the hook piece 31c to be attached to and detached from the hook hole 35. It has a level difference. However, when the hook piece 31c slides in the hook hole 35, the stopper piece 37 comes into contact with the stopper 37, thereby restricting the movement of the column 31 and preventing the column 31 from prying against the body 11. The body 31 is prevented from coming off the body 11. That is, it is possible to prevent the column 31 from easily falling off the body 11. Moreover, the stopper 37
The movement of the column 31 is regulated by the stopper 37.
The distance between the two pillars 31 is determined at the position where the hooking piece 31c is locked, and the standard size is defined as the size of the mounting hole formed in the mounting plate. It can correspond to the dimensions.

The fixing block 30 can be detachably connected to the body 11 as described above. In a state where the fixing block 30 is connected to the body 11, the head of the mounting screw 32 has a fixing hole formed in the body 11. 29 (see FIG. 3). That is, the fixing hole 29 has a long hole shape that is long in the diameter direction of the body 11, the outer end has a width through which the head of the mounting screw 32 can pass, and the inner side has the head of the mounting screw 32. It is a so-called daruma hole having a width through which the part cannot pass. Thus, the hook 3
1c is locked in the hooking hole 35, and at the same time, the head of the mounting screw 32 is also locked in the insertion hole 22.
The fixing strength of the body 11 to the body 11 is increased.

When fixing the case 1 to the ceiling surface, FIG.
As shown in FIG. 5, the cover 12 and the fixing block 30 are inserted into the mounting hole 3 in a state where the mounting hole 3 is provided in the ceiling plate 2 as the mounting plate, and the body 11 is in contact with the lower surface of the ceiling plate 2. I do. At this time, the sandwiching piece 33 is the notch 31 of the column 31.
Save to b. Next, when the mounting screw 32 is tightened clockwise, the sandwiching piece 33 rotates and the opening surface 3 of the column 31 is rotated.
1a, and moves downward with the tightening of the mounting screw 32. Therefore, the clip 33 abuts on the upper surface of the ceiling plate 2, and the ceiling plate 2 can be clamped around the mounting hole 3 by the body 11 and the clip 33, and as a result, the case 1 is attached to the ceiling plate 2. It is fixed. At this time, since the amount of movement of the sandwiching piece 33 may be small, the amount of rotation of the mounting screw 32 is small. That is, the time required for the mounting operation can be made shorter than in the conventional configuration, and the mounting operation becomes easier than in the conventional configuration.

The case 1 can be removed from the ceiling plate 2 by performing the reverse of the procedure described above. In this case, the case 1 can be removed from the ceiling plate 2 in a shorter time than in the conventional configuration. Here, the mounting screw 32 is prevented from coming off with respect to the column 31, and the sandwiching piece 33 is introduced into the notch 31b so that the notch 31b
When it comes into contact with the upper edge of the
2 and the clip 33 do not fall off the column 31. That is, the components of the fixed block 30 can be easily handled without being separated. Also, as described above, the body 11
Since the fixing block 30 can be collectively attached to and detached from the mounting block, it is easy to remove the fixing block 30 in order to adopt another mounting method (such as mounting to the mounting box using the fixing hole 29). Further, at that time, the components are not separated and dissipated unlike the conventional configuration.

(Embodiment 2) This embodiment relates to FIGS.
As shown in FIG. 7, a fixed block 30 having a configuration different from that of the first embodiment is used. That is, the mounting screw 32
Instead, a holding shaft 38 that is rotatably held at the upper end of the column 31 is provided, and the holding shaft 38 is inserted through the holding piece 33. The holding shaft 38 is inserted through a pressing spring 39 formed of a coil spring for urging the holding piece 33 downward. At the lower end of the holding shaft 38, a driver groove 38a capable of receiving a Phillips screwdriver like a screw (see FIG. 9).
Is formed. Here, the sandwiching piece 33 rotates together with the holding shaft 38 and is movable up and down. This function is realized by fixing the holding piece 33 to the holding shaft 38 and allowing the holding shaft 38 to slide up and down with respect to the column 31.

In order to mount the case 1 on the ceiling surface, as in the first embodiment, the clip 33 is inserted into the mounting hole 3 of the ceiling plate 2 while being retracted into the notch 31b. Insert a screwdriver into the groove 38a
When the pinch piece 33 comes out of the notch 31b, the pinch piece 33 moves downward by the spring force of the pressing spring 39, and moves between the body 11 and the pinch piece 33 by the spring force of the pressing spring 39. Ceiling plate 2 can be sandwiched between them. Also,
When the case 1 is removed, after the holding shaft 38 is pushed up against the spring force of the pressing spring 39 by a driver, the holding piece 33 is rotated so as to be introduced into the notch 31b, so that the holding piece 33 is retracted. Then, the case 1 can be removed. That is, in the configuration of the present embodiment, the attachment and detachment of the case 1 is further facilitated because the rotation of the mounting screw 32 is not involved. Further, the fixing hole 29 does not need to be formed as a round hole, but may be formed in an elliptical shape such that the holding shaft 38 can be operated in the sliding range of the fixing block 30. Other configurations are the same as in the first embodiment.

[0033]

According to the first aspect of the present invention, a plurality of fixed blocks are detachably attached to the flange portion, and each fixed block is provided with a clip piece for holding the mounting plate between the fixed block and the flange portion. Therefore, if necessary, just attach the fixing block to the flange part, as well as the fixing method of clamping the peripheral part of the mounting hole formed in the mounting plate with the flange part and the holding piece,
There is an advantage that if the fixing block is removed, it is possible to easily cope with other fixing methods.

[0034] Moreover, the columnar body having an open face on the outer peripheral side of the flange portion while being inserted into freely mounted to the mounting holes detachably in a manner erected on flange portion, along the longitudinal direction of the columnar body A mounting screw that is arranged and rotatably fixed to the column, and is screwed to the mounting screw and moves in the longitudinal direction of the column while projecting from the opening surface of the column with the rotation of the mounting screw. The clip is provided on the fixed block, and on the side wall of the column farther from the flange, the clip is rotated around the mounting screw and retracted to a position where it does not protrude from the opening surface of the column. Since the notch part to be formed is formed, each part constituting the fixing block will be connected by the pillar, and by attaching and detaching the pillar to the flange part, it will be fixed without disassembling other parts individually Blocks can be separated from the case, There is an effect that mounting and dismounting of the constant block is facilitated. In addition, the notch is formed with a notch so that the notch is retracted to a position where it does not protrude from the opening surface of the pillar when the mounting plate is not held between the flange and the flange. The difference between the maximum value and the minimum value of the thickness of various mounting plates is sufficient, and the amount of rotation of the mounting screws when attaching and detaching to and from the mounting plate can be reduced compared to the conventional configuration. There is an advantage that the amount is reduced and the attaching / detaching operation is easier than the conventional configuration. In addition
Formed on the flange from the outer circumference to the inner circumference.
Slidably engages with the hook pieces provided on the column
Therefore, the sliding range of the hook piece is
So that the hook can be attached and detached from the hook hole
Since a stopper with a step of degree is formed,
Position the fixing block at the desired position according to the hole size.
That can restrict the slide range.
Attached to a mounting hole with standard dimensions by providing a lid
When mounting, the proper position of the fixed block can be easily identified.
Also, do not removably attach the fixed block to the body.
Prevents pillars from easily falling off the body
can do.

According to the construction of the second aspect of the present invention, the flange
Multiple fixed blocks are detachably attached to the part, and each fixed
Holder for holding the mounting plate between the block and the flange
Since a piece is provided, if necessary,
Just by attaching the fixed block, the mounting formed on the mounting plate
How to fix the periphery of the hole between the flange and the clip
Of course, if you remove the fixing block, it is easy to use other fixing methods
Can be handled. In addition, the fixed block is detachably attached to the flange portion, and is inserted into the mounting hole . The fixed block has an opening surface on the outer peripheral side of the flange portion. A holding shaft that is rotatable with respect to the pillar, is disposed in the holding member, and a holding piece that is inserted in the holding shaft and that is movable in the longitudinal direction of the pillar while protruding from the opening surface of the pillar, and the holding shaft is inserted. The fixed block is provided with a pressing spring that urges the holding piece toward the flange with respect to the column, and the holding piece is opposed to the pressing spring on the end side wall of the pillar that is farther from the flange. A notch is formed to allow the pinch piece to rotate about the holding shaft and to retract the pinch piece to a position where it does not protrude from the opening surface of the column when pressed in a direction away from the flange portion. In the same manner as in the invention of Each part is connected by a pillar, and by attaching and detaching the pillar to and from the flange, the fixed block can be separated from the case without disassembling other parts individually. There is an advantage that it becomes easy. Also,
The sandwiching piece is retracted to the notch so that it does not project from the opening surface of the pillar when the mounting plate is not sandwiched between the flange and the flange,
In addition, since the holding piece is urged by the pressing spring in a direction approaching the flange portion, when the holding piece retracted in the notch is rotated for fixing to the mounting plate, the holding piece is spring-forced by the pressing spring. By approaching the flange, the mounting plate can be clamped between the flange and the holding piece. Conversely, when removing the case from the mounting plate, the holding piece is pressed against the spring force of the pressing spring. It is only necessary to retract in the notch portion after pushing in the direction to separate from, and there is an effect that mounting work becomes easier than when using mounting screws as in the first aspect of the present invention.

According to a third aspect of the present invention, in the configuration of the second aspect of the present invention, a driver groove for receiving the tip of the driver is formed on the end surface of the holding shaft on the flange portion side.
There is an advantage that the case can be attached and detached only by using a driver as a normal tool without requiring a special tool. According to a fourth aspect of the present invention, the hook provided on the pillar is slidably engaged with the hook formed in the flange from the outer periphery toward the inner periphery. Since the stopper that regulates the slide range of one piece is formed, the fixed block can be located at a desired position according to the size of the mounting hole, and the stopper that regulates the slide range is standard. There is an advantage that the proper position of the fixing block can be easily known when the fixing block is mounted in the mounting hole having the following dimensions.

[Brief description of the drawings]

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

FIG. 2 is a partially cutaway side view showing the first embodiment.

FIG. 3 is a bottom view showing the first embodiment.

FIG. 4 is a plan view showing the first embodiment.

FIG. 5 is a plan view illustrating the first embodiment in a state where the position of the fixed block is regulated by a stopper.

FIGS. 6A and 6B show the first embodiment, and FIGS. 6A and 6B are cross-sectional views showing different construction states.

FIG. 7 is an exploded perspective view showing the second embodiment.

FIG. 8 is a partially cutaway side view showing the second embodiment.

FIG. 9 is a bottom view showing the second embodiment.

FIG. 10 is a diagram illustrating a configuration example of a remote monitoring control system.

FIG. 11 is an explanatory diagram of the operation of the remote monitoring control system.

FIG. 12 is an exploded perspective view showing a conventional example.

FIG. 13 is a cross-sectional view showing a construction state of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Ceiling plate 3 Mounting hole 11 Body 12 Cover 30 Fixed block 31 Column 31a Opening surface 31b Notch 31c Hook piece 32 Mounting screw 33 Nipping piece 35 Hook hole 37 Stopper 38 Holding shaft 38a Driver groove 39 Push spring 41 Transmission control Device 42 Operation terminal 43 Control terminal 44 Wireless receiver Ls signal line

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁷ Identification code FI H05K 7/12 H05K 7/12 AD (56) References JP-A-6-101707 (JP, A) JP-A-6-294865 (JP, A) JP-A-6-252847 (JP, A) JP-A-6-56986 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 3/00-3 / 04 H03J 9/00-9/06 H04M 1/02-1/23 H04Q 9/00-9/16 H05K 5/00-5/06

Claims (4)

(57) [Claims] 1. A plurality of terminals each having an address set separately are branched and connected to a transmission control device via a two-wire signal line, and the transmission control device transmits a transmission signal including address data to the signal line. Each terminal is individually accessed by transmitting in the division multiplex transmission system, and when receiving monitoring data generated by any terminal during a signal return period set in synchronization with a transmission signal, control data is transmitted based on the monitoring data. A remote monitoring and control system that generates and transmits control data to another terminal that has a preset correspondence between the terminal that generated the monitoring data and the address and controls the load connected to that terminal. A wireless receiver for use, a light receiving unit for receiving a wireless signal by light,
A terminal processing unit that creates monitoring data based on the wireless signal received by the light receiving unit and sends the monitoring data to a signal line; and a case that is in contact with a peripheral portion of a mounting hole formed in the mounting plate. When, and a fixed block having a tongs part for holding the mounting plate between the flange portion having a plurality on the flange portion is inserted into freely mounted to have mounting holes detachably, fixed block, the flange portion Wearing standing up
Removably attached and inserted into the mounting hole and flange
A column having an opening surface on the outer peripheral side of the portion, and in the longitudinal direction of the column
Attached along the column and rotatably fixed to the column
Screw and the mounting screw
Moves in the longitudinal direction of the column while projecting from the opening surface
And a clamping piece that is far from the flange in the column.
Rotation of the pinch around the mounting screw on the side wall at the end
To allow the clip to move to a position where it does not protrude from the opening of the column.
A notch is formed to evacuate, and the flange is
Run from the outer side to the inner side of the corresponding area
A pair of hook holes are formed, and the pillar has an end on the flange side.
A pair of hooks slidably engaged in each hook hole in the part
Pieces are projected and the sliding range of the hook pieces is defined in the hook holes.
The degree to which the hook can be attached and detached from the hook hole
Characterized in that a stopper having a step is formed.
Wireless receiver for remote monitoring and control system. 2. A plurality of terminals each having an address set separately.
Branch connection to transmission control device via two-wire signal line
The transmission control device transmits a transmission signal including the address data.
By transmitting the signal to the signal line using the time division multiplex transmission method,
The end device individually near access, set in synchronization with the transmission signal
Monitoring data generated by any terminal during the signal return period
And generates control data based on monitoring data
And the terminal that generated the monitoring data and the corresponding address
Control over other terminals with pre-set relationships
Control data to control the load connected to the terminal
Wireless receivers for remote monitoring and control systems
A light receiving unit for receiving a wireless signal by light;
Monitoring data based on wireless signals received by the receiver
And a terminal processing unit that sends the data to the signal line.
The case is provided around the periphery of the mounting hole perforated in the mounting plate.
And a plurality of flanges
With the flange that is attached to the
And a fixed block having a sandwiching piece for holding the mounting plate therebetween.
The fixed block is detachably attached in a form standing on the flange portion, is inserted into the mounting hole, and has a column having an opening surface on the outer peripheral side of the flange portion.
A holding shaft that is arranged to be movable back and forth and is rotatable with respect to the column,
With the holding shaft inserted and projecting from the opening surface of the column, the column
The holding piece is inserted through the holding piece that can be moved in the longitudinal direction of the
To the flange so that the tab is close to the flange.
A biasing pressing spring, and a pinch piece is pressed against the pressing spring on a side wall of an end of the column far from the flange.
When the lever is pressed away from the flange, the holding shaft
Wireless receiver for remote monitoring and control system, wherein a cutout portion for retracting the clamping pieces allowing the rotation of tongs part to heart position not protruding from the opening surface of the columnar body is formed
Bowl . 3. An end face of the holding shaft on a flange side is provided.
A driver groove is formed to receive the tip of the driver
The wireless receiver for a remote monitoring and control system according to claim 2, wherein: 4. The flange portion has a portion corresponding to each column.
Each pair of hooks running from the outer side to the inner side
A hole is formed.
A pair of hooks slidably engaged in the
In the hook hole, a strike restricts the sliding range of the hook piece.
The wireless receiver for a remote monitoring and control system according to claim 2, wherein a hopper is formed .