JPH0329596A - Terminal equipment for controlling remote monitor - Google Patents

Abstract

PURPOSE:To simplify the assembling by covering an operation block incorporated with an operation handle for a load control switch to the front face of a terminal equipment case. CONSTITUTION:An operating block 22 comprising switches S1-S4 is fitted to a front face of a cover 20b by engaging an engagement claw 28a with an engagement hole 28a of the cover 20b and the operation block 22 is integrated by connecting one end of 4 operating handles 23 to a connection piece 25 via a thin elastic piece 24, a name cover 26 is press-fit to a front face recessed part of each operating handle 23. Thus, the assembling is simplified and a locking at the operation of the operation handles is avoided.

Description

[Detailed Description of the Invention] [Industrial Application] The present invention provides time-division multiplex transmission from a centrally controlled 41fJ device.
This relates to a remote monitoring and control terminal that receives transmission signals and performs switch monitoring, load control, etc. [Prior Art] Fig. 9 shows a schematic configuration of a remote monitoring and control system using a terminal for remote monitoring and control according to the present invention. ，
A plurality of monitoring terminals 2 for monitoring, a control terminal 3 for loading and controlling ~L4, a wireless relay terminal 7, an external interface terminal 8, and a pattern setting terminal 9 form a pair of signals 1&i4. The transmission signal VE+ is sent from the central #9 device 1 to the signal line 4.
As shown in FIG. 10(a), the start pulse signal ST indicates the start of signal transmission, the mode data signal MD indicates the signal mode, and the terminals 2, 3 . Address data signal A that transmits 8-bit address data calling 7 to 9
D, a control data signal CD transmitting control data for controlling ~L, a checksum data signal CS, and terminals 2, 3 . This is a bipolar (±24V) time-division multiplexed signal consisting of a return standby signal WT that sets the return period from 7 to 9, and data is transmitted by pulse width modulation. In each terminal device 2.3.7 to 9, when the address data of the transmission signal V3 received via the signal line 4 matches its own unique address data, it takes in the control data of the transmission signal Vs, and The monitoring data signal is returned as a current mode signal (a signal sent by short-circuiting the signal lines 4 via an appropriate low impedance) in synchronization with the return standby signal WT of the signal Vs. Further, the central control device 1 includes a dummy signal transmitting means for constantly transmitting a dummy transmission signal with the mode data signal MD in a dummy mode, and either a monitoring terminal 2 or a wireless relay terminal 7 or an external interface terminal. 8. When the interrupt signal Vi as shown in FIG. 10(b) returned from the pattern setting terminal 9 is received, the interrupt generating terminals 2.7 to 9 are detected and the terminals 2, 7 are Interrupt processing means is provided for accessing .about.9 and returning monitoring data. The central control device 1 also uses the monitoring data sent back to the central control device 1 from the monitoring terminal 2 or the wireless relay terminal 7, the external interface terminal 8, and the pattern setting terminal 9 as described above. At the same time, the control data is transmitted to the control terminal device 3 via the signal line 4 via time division multiplexing to control the load L, ~L4. It is designed to control L, ~L4. The wireless relay terminal 7 is a terminal that relays data of an optical wireless system consisting of an optical wireless transmitter Y, an optical wireless receiver The optical wireless receiver X receives the received data via the wireless signal line 4a, and at the same time transfers this data to the central control unit 1. The external interface terminal 8 is a terminal that performs data transmission with the external control device 8a, and the pattern setting terminal 9 transmits pattern control data input from the data input section 9a to the central control device 1. This is the terminal device that transfers data. In addition, switchboard 6 or relay system fil'! 1
The monitoring terminal 2 and the control terminal 3 installed in 1 6 a have the dimensions agreed upon on the distribution board, and their control output enables the remote control relay for load control (which can also be turned on and off with a hand switch). By the way, conventionally, as shown in FIG. 11, in the monitoring terminal 2 provided with a plurality of load control switches SI to S, The operating handles 23' of the switches S, -S4 are formed from individual parts and are integrated into the terminal case 20.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional example, since the operating handle 23' is an individual component, there is a problem that assembly is troublesome, and also there is a problem that variations in component dimensions or If there are variations in assembly accuracy, the operation handle 2
There was a problem in that the handle 3' could get caught when being operated.

Therefore, it may be possible to simplify the assembly by integrating a plurality of operating handles to form an operating block and covering the front surface of the terminal case with this operating block. However, when the operation block is covered with the terminal case, the operation display opening provided in the operation block and the operation display light emitting diode provided inside the terminal case (however, However, there was a problem in that the distance between the light emitting diode (in which an aperture corresponding to the light emitting diode for operation display is formed) becomes long, making it difficult to see the operation display. That is, since the light emitting diodes LDa and LDb are located at the back of the operation display opening, there is a problem that the operation display cannot be seen from an oblique direction.

The present invention has been made in view of the above-mentioned points, and its purpose is to simplify assembly, eliminate the problem of getting caught when operating the operating handle, and improve the operation of the operating handle. It is an object of the present invention to provide a terminal for remote monitoring and control whose display can be easily viewed.

[Means for Solving the Problems] A remote monitoring and controlling terminal according to the present invention is a remote monitoring and controlling terminal in which a load control switch and a light emitting diode for displaying load operation are disposed on the front surface of a terminal case. , an operation block with an integrated operation handle of a load control switch is covered on the front of the terminal case, and an opening for protruding the light emitting diode is provided on the front of the terminal case, and the operation block is An operation display opening is provided, and a light emitting diode protruding from the front of the terminal case is exposed to the operation display opening through the protrusion opening. [Function] The present invention is oval as described above, and the operation block, which is formed by integrating the operation handle of the load control switch, is covered on the front of the terminal case, so assembly is easy. In addition to simplifying the operation, it also eliminates the problem of getting caught when operating the operating handle.Furthermore, an opening for protruding the light emitting diode is provided on the front of the terminal case. The operation display light emitting diode protruding through the opening faces the operation display opening provided in the operation block, so that the operation display can be easily seen. [Embodiment] Figures 1 to 6 show an embodiment of the present invention, and show the structure and arrangement of a switch terminal 2'' in which switches S, to S4 are integrated into a monitoring terminal 2. It is something. That is, on the front surface of the terminal case 20, four load control switches S, -S and corresponding light emitting diodes LDa, LDb for displaying load operation are arranged in correspondence. Here, the terminal device case 20 is composed of a box-shaped case body 20a that is open to the front, and a cover 20b that has an integrally formed mounting piece 21.
The cover 20b can be assembled by engaging the engaging protrusion 27b provided on the side surface of the cover 20b with the engaging hole 27a of the engaging piece a. The mounting piece 21 is provided with a decorative cover mounting screw hole 21d and a mounting hole 2lb for direct wall mounting. A mounting portion is formed by the scissor fitting mounting hole 21c. Also,
The operation block 22 of the switches S to S4 is covered with the front surface of the cover 20b by engaging the retaining claw 28 with the engagement hole 28a of the cover 20b. One end of each operating handle 23 is connected to a connecting piece 25 via a thin elastic piece 24, and a name force bar 26 is attached to the front four parts of each operating handle 23 by press fitting. It looks like this.

Further, on the back surface of the operating handle 23, a switch pressing rib 23b is provided to protrude, and a return spring piece 23a is integrally provided to protrude.
It is designed to provide elastic force to return the operation handle 23 by elastic contact with the front surface of the handle 0b. Furthermore, two engaging protrusions for preventing lifting are integrally provided on the back surface of the other end of the operating handle 23, and can be operated by engaging with an engaging hole 29a formed in the cover 20b. It is designed to prevent the handle 23 from lifting up. Further, on the front surface of the cover 20b, a protective rib 24a having a triangular cross section that protects the hinge portion made of the elastic piece 24 is formed so as to be able to freely come into contact with the base of the elastic piece 24, so that the operating handle 23 can be moved with a large force. When pressed, this protective rib 2
By supporting the hinge portion at the apex of 4a, the elastic piece 24 is prevented from being excessively deformed and destroyed, thereby improving reliability. Note that the protective rib 24a is
Since it has a triangular cross-section, the operating handle 23 does not come into contact with the protective rib 24a in the normal operating range.

In addition, load operation display light emitting diodes LDa, LDb,
Photodiodes PD and light emitting diodes LD for transmitting and receiving optical wireless signals are mounted in one row on a printed circuit board 30, and this printed circuit board 30 is housed in the terminal case 20, and the front surface of the terminal case 20, that is, the cover. 20b includes light emitting diodes LDa, LDb.
A light emitting diode LD. A protrusion opening 31 for protruding the a and LDb, an optical signal transmission/reception aperture 32 corresponding to the photodiode PD and the light emitting diode LD, and a protrusion hole 34 for protruding the operation parts 33 of the switches S1 to S are provided. . In addition, the operation block 22
The connecting piece 25 is also provided with an opening 32a corresponding to the operation display opening 31a of the opening 31 and the opening 32, and both openings 31a and 32a are covered with a light guide 35 made of a translucent resin. 71!136 which was drilled in the hole). Further, a filter 37 such as an infrared transmission filter that selectively transmits and receives only optical signals is fitted into the opening 32a. By the way, when installing the switch terminal 82' in the embedded wiring box 40, as shown in FIG. 20 wiring box 4
0, fit the operation block 22 to the front of the terminal case 20, attach the cosmetic bar frame 42 to the mounting piece 21 with the mounting screws 43, and attach the cosmetic cover 44 to the cosmetic bar frame 42. Just fit it in. In this case, since the operation block 22 is installed after the terminal case 20 is attached, the operation block 22 should be formed in a size that covers the attachment part (that is, covers the entire front surface of the terminal case 20). This means that the operating handle 23 can be made as large as possible. FIG. 7 shows light emitting diodes LDa.corresponding to each switch 81 to S4. LDb with each operation handle 23
If the light emitting diodes LDa and LDb at the upper and lower ends become an obstacle when disposed in the wiring box 40 as shown in FIG. be. Therefore, in the embodiment, FIG.
), the light emitting diodes LDa, L at the upper and lower ends
Move Db to the center side and connect each light emitting diode LDa, LDb.
are arranged at equal intervals l'. Figure 8 shows a monitoring terminal 2 that monitors switches S, ~S4.
, which shows an example of a circuit configuration including a signal processing circuit 10 made of a microcomputer, an address setting section 11 formed of an EEPROM, a photodiode PD and transistors Q, . Q. an optical signal receiving section 12 consisting of a light emitting diode LD and a transistor Q4, an optical signal transmitting section 13 consisting of a light emitting diode LD and a transistor Q4, a power supply circuit 14 consisting of a Zener diode ZD and a transistor Q2, a return circuit l5 consisting of a resistor R and a transistor Q3, and a reset circuit. circuit 1
It is shaped like 6. Here, the transmission signal Vs transmitted via the signal line 4 is transmitted through the diode bridge DB''C'
．． f{I and is input to the signal input terminal of the signal processing circuit 10 via the transistor Q1, and the signal processing circuit 1
The circuit power of each terminal device circuit including 0 is supplied via a power supply circuit 14 that makes the rectified voltage of the transmission signal Vs a constant voltage. In addition, in the signal processing circuit ■0, the address setting section 1
Determine whether the unique address data set to 1 and the address data of the received transmission signal Vs match, and store the control data to be transmitted subsequently when the addresses match,
In addition to controlling the light emitting diodes LDa and LDb for displaying load operation (on→red, off→green), the switches S, ~
A return signal V8 that checks the state of S, forms monitoring data, and returns the monitoring data from the return circuit 15 to the central controller 1 as a current mode signal (a resistor R with a low resistance value is inserted between the signal lines 4). is sent to signal line 4. On the other hand, writing of data to the EEPROM constituting the address setting section 11 is performed by the signal processing circuit 10, and the data to be written is processed by signal processing of the signal received by the optical signal receiving section 12. 32-bit predetermined data is written. Here, the signal received by the optical signal receiving section 12 is an optical wireless signal transmitted from a data setting device (not shown), and the response signal such as a reception confirmation signal from the optical signal transmitting section 13 is an optical wireless signal. The data is transmitted as a signal, and data can be reliably transmitted wirelessly between the monitoring terminal 2 and the data setting device.

[Effects of the Invention] The present invention has been completed as described above, and since the operation block formed by integrating the operation handle of the load control switch is attached to the front of the terminal case, assembly is not necessary. It is possible to simplify the operation and eliminate the problem of getting caught when operating the operating handle.Moreover, an ejection opening for protruding the light emitting diode is provided on the front of the terminal case, and this ejection opening is Since the operation display light emitting diode projected through the operation block faces the operation display opening provided in the operation block, there is an effect that the operation display can be easily seen.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of one embodiment of the present invention, Fig. 2 is an exploded perspective view showing an example of installation in the embedded wiring box of the same, Fig. 3 is a perspective view of the main parts of the same, and Fig. 4 is the same as the above. Main part sectional view,
Fig. 5 is a front view of the main parts of the same as above, Fig. 6 is a sectional view of the main parts of the same as above, Fig. 7 is an explanatory diagram of the same as above, Fig. 8 is a circuit diagram of same as above,
FIG. 9 is a schematic configuration diagram of a remote monitoring and control system, FIG. 10 is an explanatory diagram of the same operation as above, and FIG. 11 is a front view of a conventional example. 20 is a terminal case, 20a is a case body, 20b is a cover, 22 is an operation block, 23 is an operation handle, 31
．． 31a is an opening, sI to s4 are load control switches, L
Da and LDb are light emitting diodes.

Claims (1)

[Claims] (1) In a terminal for remote monitoring and control, which includes a load control switch and a light emitting diode for displaying load operation on the front of the terminal case, an operation block is formed by integrating the operation handle of the load control switch. is covered on the front surface of the terminal case, an ejection opening is provided on the front surface of the terminal case to allow the light emitting diode to protrude, an operation display opening is provided on the operation block, and the front surface of the terminal case is provided through the ejection opening. 1. A remote monitoring and control terminal device, characterized in that a light emitting diode projected from the top faces an operation display opening.