JP3140886B2 - Operation terminal 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 terminal for operating a remote monitoring and control system which is used in a remote monitoring and control system for monitoring and controlling a load and has a switch for instructing a load control.

[0002]

2. Description of the Related Art Conventionally, a remote monitoring and control system in which a plurality of operation terminals and control terminals are connected to a transmission processing device via a two-wire signal line in a time division multiple access system has been considered. ing. An address is set for each of the operation terminal and the control terminal, and the transmission processing device individually recognizes each operation terminal and each control terminal by the address. The operation terminal includes a switch, and transmits an interrupt signal generated by operating the switch to the transmission processing device. Upon receiving the interrupt signal, the transmission processing device searches for the operation terminal device requesting the interrupt,
Further, the control data is transmitted to the control terminal in which the correspondence between the retrieved operation terminal and the address is set in advance. The control terminal receiving the control data controls the connected load in accordance with the operation of the switch.

More specifically, the remote monitoring control system has a configuration shown in FIG. 14, for example. A plurality of operation terminals 82 for monitoring the operation state of the switch SW and a plurality of control terminals 83 for controlling the load L are connected to the transmission processing device 81 via a two-wire signal line Ls. You. An individual address is set for each of the operation terminal 82 and the control terminal 83, and the transmission processing device 81 uses the addresses to operate the transmission terminal 81 and the control terminal 83.
Are individually recognized.

[0004] The transmission processing device 81 transmits a signal to the signal line Ls.
The transmission signal V having a format as shown in FIGS.
Send s. That is, the transmission signal Vs includes a start pulse ST indicating the start of signal transmission, a mode data signal MD indicating a signal mode, an operation terminal 82 and a control terminal 83.
, An address data signal AD for transmitting address data for calling each of them separately, a control data signal CD for transmitting control data for controlling the load L, a checksum data signal CS for detecting a transmission error, an operation terminal 82, A multipole (± 24) consisting of a signal return period WT which is a time slot for receiving a return data signal from the control terminal 83
V) is a time division multiplexed signal, and data is transmitted by pulse width modulation.

In each operation terminal 82 and each control terminal 83, if the address data transmitted by the transmission signal Vs received via the signal line Ls matches the address data set in advance, the transmission signal Vs And the return data as a current mode signal (a signal transmitted by short-circuiting the signal line Ls via a suitable low impedance) in synchronization with the signal return period WT of the transmission signal Vs. I will send it back.

Further, the transmission processing device 81 is provided with a dummy signal transmitting means and an interrupt signal processing means. The dummy signal transmitting means always transmits a dummy transmission signal in which the mode data signal MD is set to the dummy mode. Further, the interrupt signal processing means receives an interrupt signal Vi generated in accordance with the operation of the switch S in one of the operation terminals 82 as shown in FIG.
Is retrieved, and the address data set in the operation terminal 82 is returned as reply data. That is, the dummy transmission signal is always transmitted to the signal line Ls by the dummy signal transmission means, and the interrupt signal Vi generated from the operation terminal 82 in accordance with the operation of the switch SW is synchronized with the start pulse signal ST of the dummy transmission signal. Then, a transmission signal Vs in which the mode data signal MD is set to the address confirmation mode is transmitted from the transmission processing device 81 to the signal line Ls by the interrupt processing means. Each of the operation terminals 82 sets an interrupt flag for requesting an interrupt when the interrupt signal Vi is generated,
When the mode data signal MD receives the transmission signal Vs in the address confirmation mode in the operation terminal 82 in which the interrupt flag is set, the signal return period W of the transmission signal Vs is received.
The address data set in the operation terminal 82 is returned as return data in synchronization with T. In this way, the transmission processing device 81 can acquire the address of the operation terminal device 82 that has generated the interrupt signal Vi.

In the transmission processing device 81, the interrupt signal Vi
When the address of the operation terminal 82 that has generated
In addition to generating control data to be transmitted to the control terminal 83 connected to the load L in which the correspondence with the switch SW is set in advance, a transmission signal Vs including the control data is transmitted to the signal line Ls, and the corresponding control signal is transmitted. The load L is controlled by transmitting control data to the terminal 83 for use.

[0008] In the operation terminal 82 and the control terminal 83, the transmission signal Vs transmitted through the signal line Ls, respectively.
Is stabilized by full-wave rectification to obtain a power supply for operating the internal circuit. A power supply is separately provided for the load L connected to the control terminal 83. By the way, the present inventors formed the case 1 of the operation terminal device 82 thin as shown in FIG. 16, and inserted the rear portion of the case 1 into the mounting frame 60 attached to the construction surface.
There is proposed a configuration in which the case 1 is attached to the mounting frame 60 such that the rear surface of the case 1 is located forward of the construction surface. In this configuration, a connector 50 for relaying the signal line Ls is provided in the embedding box 4 embedded in the construction surface, and the connector 5
The signal line Ls is connected to an internal circuit of the operation terminal device 82 by connecting the signal line Ls to a connection portion provided on the back surface of the case 1.

When two or more cases 1 are connected in series,
In order to be able to work with only the individual embedding boxes 4, lead plates 3 ′ electrically connected to the signal lines Ls are protruded from both sides of the case 1, and the conductive pieces 71 fixed to the mounting frame 60 are provided. Has been proposed to allow transmission of a transmission signal between adjacent cases 1 by bringing a lead plate 3 'into contact with the case. As shown in FIG. 17, a conductive piece 71 is fixed to an insulating base 70 which is fitted to a central piece 67 between adjacent opening windows 61 of a mounting frame 60, and a tip of a lead plate 3 'is a case. It is bent so as to protrude from the side surface of the first conductive piece 71 and elastically contact the front surface of the conductive piece 71.

[0010]

In the above configuration, the insulating base 70 is fitted to the central piece 67 of the mounting frame 60. Therefore, the width of the central piece 67 and the width of the insulating base 70 are set. And the width of the conductive piece 71 are also substantially the same. As a result, the lead plate 3 '
It is necessary to protrude the lead plate 3 ′ from the side surface of the case 1 so that a part of the tip of the case 1 overlaps a part of the central piece 67 of the mounting frame 60. The lead plates 3 ′ are formed on both side surfaces of the case 1. Even if the lead plate 3 ′ is used for electrical connection with another operation terminal 82 on one side of the case 1, Are often not used for connection with other operation terminals 82. In this case, the unused lead plate 3 ′ faces the periphery of the mounting frame 60, and the distance between the conductive piece 71 and the mounting frame 60 is substantially constant. 'And mounting frame 60
Is smaller than the distance between the conductive piece 71 and the mounting frame 60, and the unused lead plate 3 'is more likely to contact the mounting frame 60. As a result, when the metal mounting frame 60 is used, the lead plate 3 'comes into contact with the mounting frame 60 and the signal line L
The possibility that the transmission signal Vs cannot be transmitted due to a short circuit between the s lines increases.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and it is possible to attach a mounting frame having a plurality of mounting windows to feed and route signal lines along the mounting frame. An operating terminal for a remote monitoring and control system that prevents conductive parts that are not used for contact with the mounting frame and prevents a short circuit accident between signal lines even when a metal mounting frame is used. It is something to offer.

[0012]

According to a first aspect of the present invention, a plurality of terminals each having a different address are connected to a transmission processing apparatus via a two-wire signal line by a time division multiple access system, and transmission is performed. The processing device individually accesses the terminal by transmitting a transmission signal including address data to the signal line, and receives operation data from the terminal during a signal return period set in synchronization with the transmission signal, and converts the operation data into operation data. The control data is generated based on the control data, and the control data is transmitted to another terminal in which the correspondence between the terminal and the terminal that has generated the operation data is set in advance and the load connected to the terminal is controlled. An operation terminal that is used in a remote monitoring and control system and generates operation data based on the operation of a switch. The operation terminal is attached with the rear part inserted into the mounting window of the mounting frame fixed to the construction surface. A case in which the rear surface is located forward of the construction surface, and a pair of terminals that are electrically connected to signal lines via connectors that are detachably coupled to the rear surface of the case and that each end is exposed on each side of the case. The signal transmission plate has a first terminal portion at one end located in front of the mounting frame when the case is mounted on the mounting frame, and the other end has a tip portion more than the side surface of the case. A second terminal portion that is retracted;
A first connection portion at one end of a conductive plate inserted into an insulating base disposed on the front side of the mounting frame between adjacent mounting windows of the mounting frame having a plurality of mounting windows is a first terminal portion. And the second connection portion at the other end of the conductive plate is coupled to the second terminal portion, and the distance between the first connection portion and the mounting frame is set to be larger than other portions of the conductive plate. It is characterized by comprising.

According to a second aspect of the present invention, in the configuration of the first aspect, the second connecting portion of the conductive plate is formed in a flat plate shape, and the second terminal portion of the signal transmission plate is a hollow into which the second connecting portion is inserted and connected. It is characterized by being formed in a cross-sectional shape having a portion. According to a third aspect of the present invention, in the configuration of the first aspect, the second terminal portion of the signal transmission plate is formed in a flat plate shape, and the second connection portion of the conductive plate has a hollow portion into which the second terminal portion is inserted and connected. It is characterized by being formed in a cross-sectional shape.

According to a fourth aspect of the present invention, in the first to third aspects, the signal transmission plate is bent between the first terminal portion and the second terminal portion in a plane along the inner peripheral surface of the case. It has a bent portion, and the bent portion is engaged with a holding groove formed on the inner peripheral surface of the case.

[0015]

According to the first aspect of the present invention, there is provided a signal transmission plate which is electrically connected to the signal line and has each end exposed at each side of the case, and is attached to one end of the signal transmission plate. A first terminal portion is provided at the front of the frame, and a second terminal portion is provided at the other end portion, the tip of which is recessed from the side surface of the case, and a conductive base is provided on the insulating base provided on the front side of the mounting frame. A first connecting portion elastically contacting the first terminal portion from the rear side and a second connecting portion coupled to the second terminal portion at each end of the conductive plate at each end of the conductive plate. Since the distance between the first connection portion and the mounting frame is set to be larger than other portions of the conductive plate, the first terminal portion is not electrically connected to the conductive plate. Even in the state, the distance between the first terminal portion and the mounting frame can be increased, so that the first terminal portion does not contact the mounting frame, and the second terminal We have never in contact with the mounting frame even in a state in which they are not electrically connected to the conductive plate by being set back from the side surface of the case for. That is, even if the mounting frame is made of metal, the signal transmission plate does not come into contact with the mounting frame, and a short circuit between the signal lines can be prevented. Further, since the insulating base provided with the conductive plate is disposed on the front side of the mounting frame, the size of the insulating base is not restricted by the size between the mounting windows of the mounting frame, and the conductive plate is It can be formed longer than the distance between the cases. Thus, the second terminal portion can be provided so as to be retracted with respect to the side surface of the case.

According to the second and third aspects of the present invention, one of the second connection portion of the conductive plate and the second terminal portion of the signal transmission plate is formed in a flat plate shape, and the other is a hollow into which the one is inserted and connected. The signal transmission plate and the conductive plate can be electrically connected only by inserting one of the above into the other, and the position of the conductive plate with respect to the case is fixed. You can do it. Since the conductive plate is inserted through the insulating base, when the conductive plate is fixed to the case, the insulating base is also fixed to the case.

According to the fourth aspect of the present invention, a bent portion is provided between the first terminal portion and the second terminal portion of the signal transmission plate, the bent portion being bent in a plane along the inner peripheral surface of the case. By engaging the bent portion with the holding groove formed on the surface, even if an external force acts in a direction connecting both ends of the signal transmission plate, the bent portion is engaged with the holding groove, so that the signal transmission is performed. The displacement of the plate can be prevented.

[0018]

Embodiment 1 FIG. 7 is a block diagram of an operation terminal 82. The operation terminal 82 is a signal processing unit 9 composed of a dedicated integrated circuit having a microprocessor as a main component.
1, the signal processing unit 91 is connected to the signal line Ls through the transmission / reception circuit unit 92. The signal processing unit 91 is provided with four switches SW. The signal processing section 91 operates based on the function data and the address data stored in the storage section 93 formed of a nonvolatile memory. The address data defines an address unique to the operation terminal 82. The function data includes data indicating that the type of the terminal device is for operation, and data indicating a correspondence relationship indicating whether each load L is associated with the operation of the switch SW on a one-to-one basis or a plurality of loads L are associated with the switch SW. And data on a timer operation for operating the load L for a certain time after the operation of the switch SW, or stopping the operation of the load L with a delay for a certain time after the operation of the switch SW. The function data and address data stored in the storage unit 93 are transmitted to and received from the address setting unit 85 (FIG. 14) transmitted and received by the wireless transmission / reception unit 94 via the light receiving element LR and the light emitting element LE.
) Can be rewritten by a wireless signal such as an infrared ray from The power of the internal circuit of the operation terminal 82 is obtained by performing full-wave rectification and stabilization of the transmission signal Vs on the signal line Ls by a power supply circuit unit (not shown) provided in the transmission / reception circuit unit 92. Moreover, the off indicator LD ₂ made of light-emitting diode and ON display lamp LD ₁ made of light-emitting diode that lights in response to ON of the load L with the operation of the switch SW is turned on in response to the off load L, It is provided corresponding to each switch SW. The signal processing unit 91 includes a crystal oscillator 9 for generating a clock signal.
7 and a reset circuit unit 98 that resets the signal processing unit 91 at startup.

The address setting unit 85 sends out a wireless signal by infrared rays, and sets, confirms, and corrects function data and address data stored in the storage unit 93. That is, when the wireless transmission / reception unit 94 receives the wireless signal from the address setting unit 85, the signal processing unit 91 operates the data in the storage unit 93 in accordance with the operation requested by the wireless signal. When the data setting is requested, the storage unit 93 is set in accordance with the content of the wireless signal.
, And a reception confirmation signal indicating that the wireless signal has been normally received.
To the address setter 85 through When data confirmation is requested, the data in the storage unit 93 is read and transmitted to the address setting unit 85. When data correction is requested, required data is written in the same manner as in the setting, and the written data is written. It is returned to the address setting device 85.

As shown in FIG. 1, the circuit is mounted on a circuit board 2 which is a printed wiring board, and the circuit board 2 is mounted in a case 1. The case 1 is formed by a rectangular parallelepiped body 10 with a small thickness before and after the front surface is opened, and a cover 20 formed in a small rectangular shape with a small thickness before and after the rear surface is opened and covering the front opening of the body 10. 1
A decorative cover 30 that covers the front surface of the case 1 is attached to the front surface. The body 10 and the cover 20 engage an assembly claw (not shown) protruding from the rear surface of the cover 20 with a peripheral portion of an assembly hole (not shown) formed on one side edge of the body 10. At the same time, an assembly screw (not shown) inserted through the through hole 12 formed in the body 10 is screwed into a boss 22 (see FIG. 4) protruding from the back surface of the cover 20 to be joined. Here, the cover 20 is the body 1
The vertical dimension is larger than 0, and the rear part of the body 10 projects rearward from the rear surface of the cover 20. Makeup cover 3
The rear surface of the cover 2 is provided with an engaging claw (not shown).
The engaging claw is engaged with the periphery of the four engaging holes 23 formed on the cover 20 so that the decorative cover 30
Are detachably connected. A nameplate 40 made of a synthetic resin sheet is attached to the front surface of the decorative cover 30.

A pair of mounting claws 13 is provided on the right side of the body 10.
And a cover 20 is provided on a part of the left side surface of the body 10.
The mounting tongue pieces 24 (see FIG. 4) formed continuously and integrally face each other. At the tip of the mounting tongue piece 24, an engagement claw 25 is formed at the same position as the mounting claw 13 in the front-rear direction of the case 1 and protrudes to the left of the body 10. At the base of the mounting tongue piece 24 in the cover 20, there is formed a release hole 35 which penetrates the cover 20 back and forth. The mounting tongue piece 24 can be bent as described above.

An operation piece 2 for transmitting an operation force to the switch SW is provided on the cover 20 at a position corresponding to each of the four switches SW, which are pushbutton switches mounted on the circuit board 2.
6 are provided. The operation piece 26 is inserted into an operation hole 27 formed in the cover 20, and a key portion of the periphery of the operation piece 26 is continuously and integrally connected to the periphery of the operation hole 27 so as to be able to move back and forth elastically. ing. That is, when a pressing force is applied to the operation piece 26 from the front (upward in FIG. 1), each switch SW can be operated. When the pressing force applied to the operation piece 26 is released, the periphery of the operation hole 27 and the operation piece 26
The operation piece 26 returns to the original position due to the elasticity of the part connecting the two. The front portion of the operation piece 26 protrudes forward from the cover 20. The cover 20, on the display lamp LD ₁ and OFF indicator lamp LD ₂ and display aperture 28 for insertion in pairs corresponding to each switch SW is formed, a light-receiving element LR and a light emitting element LE to exchange further wireless signal A transmitting / receiving hole 29 to be exposed is also formed.

In the decorative cover 30, insertion holes 31 through which the front portions of the operation pieces 26 are inserted are perforated corresponding to the operation pieces 26, and are further provided at positions corresponding to the display holes 28 and the transmission / reception holes 29 of the cover 20. , A display hole 32 and a transmission / reception hole 33 are perforated. Here, the front of the operation piece 26 is a decorative cover 30.
Dimensions are set so as to slightly protrude from the front surface of the. When the decorative cover 30 is attached to the cover 20, the removal hole 35 is covered by the decorative cover 30.

The nameplate 40 is provided with an operation portion 41 having a step on its periphery so as to protrude slightly forward at a portion corresponding to the operation piece 26. The operation portion 41 is formed in a thickness direction so that the operation piece 26 can be operated. It has flexibility. The nameplate 40 is mostly transparent so that characters and the like written on a name card 45 sandwiched between the operation unit 41 and the operation piece 26 can be read. Display hole 3 on nameplate 40
A non-light-transmitting portion 42 is formed in a band-like portion at which the transmission / reception holes 33 are arranged, and a light-transmitting portion 43 that transmits visible light is formed at a portion corresponding to the display hole 32 in the non-light-transmitting portion 42. An infrared transmitting portion 44 for transmitting infrared light is formed in a portion of the light transmitting portion 42 corresponding to the transmitting / receiving hole 33.

The circuit board 2 is housed in a space formed between the body 10 and the cover 20. One left and right side of the circuit board 2 projects from one side of the body 10. The circuit board 2 is sandwiched between the holding claws 15 and the rear wall of the body 10, and the other side of the circuit board 2 is positioned by engaging the notch 2 a with an assembly screw. Further, a pair of signal transmission plates 3 formed of a conductive material and penetrating both side walls of the body 10 are connected to a conductive pattern electrically connected to the signal lines Ls on the circuit board 2.

As shown in FIG. 3, the signal transmission plate 3 is formed in a band shape, and has a first terminal portion 3a which is bent in a substantially U shape at one end portion, and has an eyeglass-like shape at the other end portion. A second terminal portion 3b having a cross-sectional shape having a hollow portion 3c is provided. A pair of holding grooves 16 are formed on the inner peripheral surface of the body 10 so as to engage with portions of each signal transmission plate 3 between the first terminal portion 3a and the second terminal portion 3b.

A connector 50 is provided at the center of the body 10.
A coupling hole 17 for mechanically coupling (see FIG. 16) and a connection hole 18 for introducing the conductive portion of the connector 50 into the case 1 are formed as connection portions with the connector 50. The coupling hole 17 and the connection hole 18 are provided in a pair, and are formed in an arc shape. The connector 50 has a substantially L-shaped hooking claw 55 that engages with the periphery of the coupling hole 17. When the hooking claw 55 is inserted into the coupling hole 17 and the connector 50 is rotated, the connector 50 is coupled to the case 1. The contact 54 is pressed against the conductive pattern. The signal line Ls is connected to the contact 54 of the connector 50, and the signal line Ls is connected to the conductive pattern of the circuit board 2 via the connector 50.

The case 1 formed as described above is attached to a metal mounting frame 60 (see FIG. 16). Mounting frame 6
Numeral 0 has two mounting windows 61 so that the case 1 can be attached to each of the mounting windows 61. Each mounting window 61
A first receiving portion 62 with which the mounting claw 13 provided on the case 1 can be engaged is formed on the right side of the case 1, and a second receiving portion 63 with which the engaging claw 25 can be engaged on the left side of each mounting window 61. Is formed.
The first receiving portion 62 and the second receiving portion 63 are formed by projecting a part of the mounting frame 60 forward in the thickness direction, insert the mounting claw 13 into the first receiving portion 62, and form the second receiving portion. 6
The case 1 is fixed to the mounting frame 60 by the rear surface of the cover 20 abutting against the front surface of the mounting frame 60 when the engaging claw 25 is inserted into the mounting claw 3. Case 1
Is attached to the mounting frame 60, the dimensional relationship is set such that the rear surface of the case 1 is positioned substantially flush with the rear surface of the mounting frame 60 or slightly forward of the rear surface of the mounting frame 60.

To attach the case 1 detached from the mounting frame 60 as shown in FIG. 4A to the mounting frame 60, FIG.
When the mounting claw 13 formed on the left end of the case 1 is engaged with the first receiving portion 62 of the mounting frame 60 as shown in FIG.
Is pressed toward the mounting frame 60. Here, the engaging claw 25 provided at the tip of the mounting tongue piece 24
4 is inclined forward toward the tip of the engaging claw 25, so that when the case 1 is pressed against the mounting frame 60, the rear surface of the engaging claw 25 comes to the front of the second receiving portion 63. By the contact, the mounting tongue piece 24 bends in a direction to bring the engaging claw 25 closer to the mounting claw 13, and then the engaging claw 25 is introduced into the second receiving portion 63 as shown in FIG. 1
Is fixed to the mounting frame 60.

On the other hand, in order to remove the case 1 attached to the mounting frame 60 from the mounting frame 60, the decorative cover 30 is removed from the cover 20, and a tool such as the tip of a driver is inserted into the removal hole 35. The attachment tongue piece 24 bends to release the engagement between the engagement claw 25 and the second receiving portion 63, and the case 1 can be removed from the attachment frame 60. Mounting frame 60
At the top and bottom of each of the mounting windows 61, a pair of left and right long elongated mounting holes 64 into which box screws are respectively inserted are formed. The distance between the upper and lower mounting holes 64 is set so that a box screw that is screwed into the tongue piece 4a of the embedding box 4 used at the time of installation of the embedding wiring device standardized by JIS standards or the like can be inserted. Have been. That is,
The space between the upper and lower mounting holes 64 is set to be equal to the mounting frame for three large squares that can mount up to three embedded wiring devices having standardized unit dimensions. As a result, the mounting frame 61 can be attached to a ready-made embedding box for wiring equipment.

Further, plate screw holes 65 into which plate screws are respectively screwed are formed above and below each of the mounting windows 61 of the mounting frame 60, and through the middle frame 6 fixed to the mounting frame 60 by the plate screws. The decorative plate 5 used at the time of construction of the standardized embedded wiring device can be attached to the mounting frame 60. That is, the middle frame 6 is a through hole 6 through which a plate screw screwed into the plate screw hole 65 is inserted.
The decorative plate 5 is connected to the mounting frame 60 by a plate screw, and the decorative plate 5 is detachably attached to the middle frame 6 by a claw (not shown). Decorative plate 5
Has an exposed window 5a through which the front part of the case 1 can be inserted.
Opens. Therefore, the portion where the pressing force acts on the operation piece 26 can be exposed through the exposure window 5a of the decorative plate 5. Thus, the ready-made decorative plate 5 used for the embedded wiring device is attached to the mounting frame 60.
As a result, not only the embedding box 4 but also the decorative plate 5 can be diverted from the existing one, and an increase in the manufacturing cost of the members required for construction can be suppressed.

Incidentally, the cover 20 constituting the case 1
A pair of lift prevention ribs 19 are provided on both upper and lower peripheral surfaces of the pair. When the case 1 is attached to the mounting frame 60, the lifting prevention rib 19 contacts the front surface of the mounting frame 60. When the middle frame 6 is connected to the mounting frame 60, the lifting prevention rib 19 is sandwiched between the mounting frame 60 and the middle frame 6. Therefore, the case 1 is prevented from moving back and forth, and the case 1 is firmly fixed.

A pair of hook holes 66 are also formed above and below each mounting window 61 in the mounting frame 60, and a peripheral portion of the mounting hole formed in the wall panel or the like is sandwiched between the mounting frame 60 and the mounting hole 60. With one end of the clip fitting inserted into the hook hole 66,
By tightening the attraction screw screwed into the clamp through the mounting hole 64, the end of the clamp is attached to the mounting frame 6.
It can be made to approach zero.

The mounting frame 60 has two cases 1
The transmission signal is transmitted between the two cases 1 using the signal transmission plate 3. That is, the conductive plate 7 for electrically connecting between the second terminal portion 3b of the signal transmission plate 3 provided in one case 1 and the first terminal portion 3a of the signal transmission plate 3 provided in the other case 1 is provided. Provided. Also,
An insulating base 8, which is a synthetic resin molded product, is simultaneously and integrally formed on the conductive plate 7. The conductive plate 7 is, as shown in FIG.
One end is a first connecting portion 7a that is inclined forward toward the front end, and the other end is a flat second connecting portion 7b inserted and connected to the second terminal portion 3b. Further, as shown in FIG. 7, the insulating base 8 includes a connection base 8a opened forward at a portion corresponding to the first connection part 7a, and the first connection part 7a and the second connection part
There is provided a holding table 8b through which the conductive plate 7 is inserted at a portion corresponding to the connection portion 7b. A projection 8d is formed on the rear surface of the insulating base 8. Further, a substantially U-shaped support base 8c which is opened forward and holds the first connection part 7a is provided on the connection base 8a.
Is formed.

Using the conductive plate 7 described above, two cases 1
When the signal transmission plate 3 is electrically connected between the two terminals, the second connection portion 7b of the conductive plate 7 is connected to the second terminal portion 3b of the signal transmission plate 3 of one case 1 as shown in FIG. The first terminal portion 7a of the signal transmission plate 3 of the other case 1 is resiliently contacted from the front with the insulating base 8 being inserted and disposed on the front side of the center piece 67 between the adjacent mounting windows 61. At this time, the protrusion 8d of the insulating base 8 is pressed against the central piece 67 of the mounting frame 60 to prevent the insulating base 8 from being displaced. As described above, the signal transmission plates 3 of both cases 1 are electrically connected via the conductive plate 7. That is, the signal transmission plate 3 is connected to the connector 5
0, the signal is connected to the signal line Ls, so that the transmission signal can be transmitted between the two cases 1. Thus, the connector 50 is connected to one of the two cases 1.
To connect the signal line Ls to one of the cases 1,
For the other case 1, the signal transmission plate 3 and the conductive plate 7
, The signal line Ls is connected via the connector. Therefore, even if two cases 1 are provided, only one connector 50 needs to be provided.

According to the above-described configuration, the insulating base 8 is disposed on the front side of the center piece 67 of the mounting frame 60, and the first connecting portion 7a of the conductive plate 7 is inclined forward toward the tip. Therefore, the first terminal portion 3a of the signal transmission plate 3 and the mounting frame 6
0, and the second terminal portion 3b of the signal transmission plate 3 is provided so as to be recessed with respect to the side surface of the case 1, so that the first terminal portion 3a which is not used and The short circuit between the signal lines Ls can be prevented without the second terminal portion 3b coming into contact with the mounting frame 60.

(Embodiment 2) This embodiment is similar to the embodiment shown in FIGS.
As shown in FIG. 0, the second terminal portion 3b of the signal transmission plate 3 is formed in a flat plate shape, and the second first terminal portion 7b of the conductive plate 7 has a hollow portion 7c into which the second terminal portion 3b is inserted and connected. It is formed in a cross-sectional shape. That is, the second terminal 3b and the second
The shape of the first terminal portion 7b is reversed from that of the first embodiment.
In addition, as shown in FIG.
Although a is not inclined, it is formed so as to protrude forward from other portions, and the connecting base 8a of the insulating base 8 also has a cross-sectional shape adapted to the shape of the conductive plate 7 as shown in FIG. ing. Therefore, the signal transmission plates 3 of both cases 1 are electrically connected via the conductive plate 7 in the form as shown in FIG. The other configuration is the same as that of the first embodiment, and the description is omitted.

(Embodiment 3) This embodiment is different from the embodiment 2 in that the first terminal portion 3a and the second
A crank-shaped bent portion 3c as shown in FIG. 13 is formed in a portion between the terminal portion 3b. The bent portion 3c is bent in a plane along the inner peripheral surface of the body 10, and the holding groove 16 formed in the inner peripheral surface of the body 10 is formed in a shape that matches the bent portion 3c. Therefore, the second terminal portion 3b
Even if an external force acts on the signal transmission plate 3 in the left-right direction of FIG. 13 when attaching and detaching the signal transmission plate 3 to and from the second connection portion 7b, the signal transmission plate 3 is prevented from being displaced left and right. Other configurations are the same as those of the second embodiment, and the configuration of this embodiment is the same as that of the first embodiment.
It is applicable also in.

[0039]

According to the first aspect of the present invention, there is provided a signal transmission plate which is electrically connected to a signal line and has each end exposed at each side of the case, and is attached to one end of the signal transmission plate. A first terminal portion is provided at the front of the frame, and a second terminal portion is provided at the other end portion, the tip of which is recessed from the side surface of the case, and a conductive base is provided on the insulating base provided on the front side of the mounting frame. A first connecting portion elastically contacting the first terminal portion from the rear side and a second connecting portion coupled to the second terminal portion at each end of the conductive plate at each end of the conductive plate. Since the distance between the first connection portion and the mounting frame is set to be larger than other portions of the conductive plate, the first terminal portion is not electrically connected to the conductive plate. Even in the state, the distance between the first terminal portion and the mounting frame can be increased, so that the first terminal portion does not contact the mounting frame, and the second terminal We have never in contact with the mounting frame even in a state in which they are not electrically connected to the conductive plate by being set back from the side surface of the case for. That is, even if the mounting frame is made of metal, there is an advantage that the signal transmission plate does not contact the mounting frame and a short circuit between the signal lines can be prevented. Also, since the insulating base provided with the conductive plate is disposed on the front side of the mounting frame,
The size of the insulating base is not restricted by the size between the mounting windows of the mounting frame, and the conductive plate can be formed longer than the distance between the cases. Thus, the second terminal portion can be provided so as to be retracted with respect to the side surface of the case.

According to a second or third aspect of the present invention, one of the second connection portion of the conductive plate and the second terminal portion of the signal transmission plate is formed in a flat plate shape, and the other is inserted into and connected to the hollow. Since it is formed in a cross-sectional shape having a portion, the signal transmission plate and the conductive plate can be electrically connected only by inserting one of the above into the other, and the position of the conductive plate with respect to the case is easily fixed. There is an advantage that can be. Moreover, since the conductive plate is inserted through the insulating base, when the conductive plate is fixed to the case, the insulating base is also fixed to the case.

According to a fourth aspect of the present invention, a bent portion is provided between the first terminal portion and the second terminal portion of the signal transmission plate, the bent portion being bent in a plane along the inner peripheral surface of the case. Since the bent portion is engaged with the formed holding groove, the bent portion is engaged with the holding groove even when an external force acts in a direction connecting both ends of the signal transmission plate, so that the position of the signal transmission plate is There is an advantage that displacement can be prevented.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of a main part showing a use state of the first embodiment.

3A and 3B show a signal transmission board used in the first embodiment, wherein FIG. 3A is a front view, FIG. 3B is a bottom view, and FIG. 3C is a side view.

FIG. 4 is a cross-sectional view showing a procedure for attaching the case to the mounting frame in the first embodiment.

5A and 5B show a conductive plate used in Example 1, wherein FIG. 5A is a front view and FIG. 5B is a bottom view.

6A and 6B show an insulating base used in the first embodiment, wherein FIG. 6A is a front view, FIG. 6B is a right side view, FIG. 6C is a left side view, and FIG.

FIG. 7 is a block diagram of an embodiment.

FIG. 8 is an exploded perspective view of the second embodiment.

FIG. 9 is a cross-sectional view of a main part showing a use state of the second embodiment.

10A and 10B show a signal transmission plate used in the second embodiment, and FIG.
Is a front view, and (b) is a bottom view.

11A and 11B show a conductive plate used in Example 2, (a) is a front view, (b) is a right side view, (c) is a left side view, and (d) is a bottom view.

12A and 12B show an insulating base used in the second embodiment, where FIG. 12A is a front view, FIG. 12B is a right side view, FIG. 12C is a left side view, and FIG.
Is a sectional view.

FIG. 13 shows a signal transmission plate used in the third embodiment, and (a)
Is a front view, and (b) is a bottom view.

FIG. 14 is a schematic configuration diagram of a remote monitoring control system.

FIG. 15 is an operation explanatory diagram illustrating a transmission signal used in the remote monitoring control system.

FIG. 16 is an exploded perspective view showing a use state of a conventional example.

FIG. 17 is a sectional view of a main part showing a use state of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 3 Signal transmission board 3a 1st terminal part 3b 2nd terminal part 3c hollow part 3d bending part 7 conductive plate 7a 1st connection part 7b 2nd connection part 7c hollow part 8 Insulation base 16 holding groove 50 connector 60 mounting frame 61 mounting window 81 transmission processing device 82 operation terminal device 83 control terminal device L load Ls signal line SW switch

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04Q 9/00-9/16

Claims (4)

(57) [Claims] A plurality of terminals each having an address are connected to a transmission processing device via a two-wire signal line by a time division multiple access method, and the transmission processing device transmits a transmission signal including address data. The terminal device is individually accessed by transmitting to the signal line, and when operation data from the terminal device is received during a signal return period set in synchronization with the transmission signal, control data is generated based on the operation data, and the operation data is generated. Used in a remote monitoring and control system that transmits control data to another terminal that has a preset correspondence with the generated terminal and address and controls the load connected to that terminal, and operates the switch. An operation terminal for generating operation data based on a rear surface of a mounting frame fixed to a construction surface, wherein the rear portion is attached to the mounting window with the rear portion inserted, and the rear surface is located forward of the construction surface. A pair of signal transmission plates electrically connected to signal lines via connectors detachably coupled to the rear surface of the case and having respective ends exposed on each side of the case. Is provided at one end with a first terminal located at the front of the mounting frame when the case is mounted on the mounting frame, and at the other end is provided with a second terminal having a tip retreated from a side surface of the case. The first connection portion at one end of the conductive plate inserted into the insulating base provided on the front side of the mounting frame between the adjacent mounting windows of the mounting frame having the plurality of mounting windows serves as the first terminal portion. On the other hand, the second connection portion at the other end of the conductive plate is elastically contacted from the rear surface side and is coupled to the second terminal portion, and the first connection portion is set to have a greater distance from the mounting frame than other portions of the conductive plate. An operation terminal for a remote monitoring and control system. 2. The second connecting portion of the conductive plate is formed in a flat plate shape, and the second terminal portion of the signal transmission plate is formed in a cross-sectional shape having a hollow portion into which the second connecting portion is inserted and connected. The terminal for operation of a remote monitoring and control system according to claim 1. 3. The signal transmission plate according to claim 1, wherein the second terminal portion is formed in a flat plate shape, and the second connection portion of the conductive plate is formed in a cross-sectional shape having a hollow portion into which the second terminal portion is inserted and connected. The terminal for operation of a remote monitoring and control system according to claim 1. 4. The signal transmission plate has a bent portion between the first terminal portion and the second terminal portion in a plane along the inner peripheral surface of the case, and the bent portion is formed on the inner peripheral surface of the case. The operating terminal of the remote monitoring control system according to claim 1, wherein the operating terminal engages with the holding groove.