JPH0516245B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a panel such as a power distribution board or switchboard incorporating a time switch together with a circuit breaker, and relates to a panel such as a power distribution board or a power distribution board incorporating a time switch together with a circuit breaker. In a panel 10 such as a distribution board or switchboard, on which the circuit breaker 4 is fixed by locking the provided claws 5, the time switch body 3 is made to have the same external dimensions as the circuit breaker 4 body. A claw hole 6 is formed on both sides of the rear protrusion 41 of the time switch body 3 at the same position as the claw hole 6a provided in the circuit breaker 4. The output terminal 7 and the input terminal 8 are provided at the same positions as the output terminal 7a and the input terminal 8a provided in the time switch body 3, and a display device 1 for displaying the set time is provided on the front surface of the protruding surface portion 40 on the front surface of the time switch body 3. A time switch 9 formed by providing a time input operation part 2 is fixed to the board 10 by locking a claw 5 provided on the board 10 into a claw hole 6 of the time switch 9. It is something.

Since the conventional time switch 9' was fixed using a unique method different from that of the circuit breaker 4, etc., the time switch 9' can be installed in the iron box 13 of the panel 10 of the distribution board or switchboard as needed. When assembling the time switch 9', the fixing method was complicated and it took a long time to install the time switch 9'. In addition, since the external shape and dimensions of the time switch 9' are not unified and standardized with the circuit breaker 4, unnecessary space is required when installing and wiring the time switch 9', as shown in Figures 1 and 3. As a result, the board 10 itself became larger, leading to an overall price increase. Furthermore, the positions and shapes of the terminals will be irregular, which not only looks bad, but also makes it easy for the time switch 9' to be wired incorrectly.
For this reason, there was a problem that the time switch 9' or the equipment used as a load could be damaged, increasing the danger. Furthermore, on the front of the iron box 13, there is a second
The inner door 11 is installed as shown in FIG. In such cases, the only option is to remove the inner door 11, use a special panel 10, or fix the time switch 9' of the iron box 13. However, if the inner door 11 is removed, there is a risk that the human body will come into contact with the wiring during operation, and if a special panel 10 is ordered, the cost will be extremely high, and the iron box 1
If the time switch 9' is fixed outside of the time switch 3, there are problems in that the appearance is poor, the operability and safety are poor, and the original purpose of the power distribution board or switchboard is lost. Further, an opening 12 for the time switch 9' must be made in advance in the inner door 11 opposite to the location where the time switch 9' is installed, or it must be opened each time on site. Ta.

The present invention was made in view of the drawbacks of the conventional example described above, and its purpose is to enable the time switch to be attached using the claws provided on the panel for fixing the circuit breaker, and to improve the external shape and shape. A distribution board that eliminates the drawbacks of the above conventional examples, such as making the dimensions the same as the circuit breaker, simplifying installation on the panel, allowing the opening of the inner door to be shared with that for the circuit breaker, and making wiring mistakes less likely. We provide panels such as power distribution boards and switchboards.

The present invention will be described in detail below with reference to the accompanying drawings. What is shown in FIGS. 7a and 7b is a collective circuit breaker 4 for a lighting distribution board, and a protruding surface portion 40a provided on the front surface (top surface in the figure) of this circuit breaker 4 has an operating section. Claw holes 6a are provided on both sides of the rear protrusion 41a at the narrow rear end where the breaker 14 is exposed, and an output terminal 7a and an input terminal 8a each having a terminal screw 15a are provided on the side of the circuit breaker 4. is provided. The external shape, dimensions, etc. of this collective circuit breaker 4 for lighting distribution boards meet certain standards (Japan Electrical Manufacturers Association standard JEM-
1292 (established in 1961), and Figure 7a,
The one shown in b is for a single pole, and in the case of multiple poles with two or more poles as shown in Figure 8, etc., the thickness is an integral multiple of the basic thickness t in Figure 7 b, and the side surface is In this case, claw holes 6a and input/output terminals 8a, 7a are provided at regular pitches. What is shown in Fig. 5 is an electronic time switch 9 for collective wiring for lighting distribution boards, which is designed in accordance with the standards regarding the external shape and dimensions of the above-mentioned collective circuit breaker 4 for lighting distribution boards. It has the same external shape as circuit breaker 4. That is, similar to the circuit breaker 4, claw holes 6 are provided at regular pitches on both sides of the rear protrusion 4 at the narrow rear end of the time switch body 3. The output terminal 7 and input terminal 8 are provided at the same positions as the output terminal 7a and input terminal 8a provided in the circuit breaker 4, but the circuit breaker 4 is provided with an operating lever 14. The front projecting surface portion 40 is provided with a digital display device 1 and a time input operation portion 2 comprising a set switch 17 and the like. Moreover, the claw hole 6
The heights of the terminals 7 and 8 are also the same as that of the circuit breaker 4, and the height H of the time switch 9 is set to be less than the limit value (80 mm) of the height h of the circuit breaker 4.
This time switch main body 3 may share the housing of the circuit breaker 4. Also, this time switch 9
has a circuit configuration as shown in FIG. 6, with a commercial AC power supply A connected to an input terminal 8, 18 a power supply circuit section, 19 a microcomputer, and 20 a relay drive circuit section. However, the power supply circuit section 1
8 applies a necessary DC voltage to the microcomputer 19, the display device 1, and the relay drive circuit section 20. Adjust the current time, turn ON signal or
The timer time at which the OFF signal is desired to be obtained is set by operating the time input operation section 2. The microcomputer 19 has a clock input, and the microcomputer 19 counts this clock input to keep track of the current time, and the display device 1 displays the current time and timer time based on the signal from the microcomputer 19. The microcomputer 19 also counts the clock input and compares the current time with the timer time.
Generates an ON signal or an OFF signal, and this signal H from the microcomputer 19 is sent to the relay drive circuit section 20 to drive a relay (not shown).
Generates an ON or OFF signal to the output terminal 7, or supplies current to drive the load. In addition,
The three output terminals 7 are a common terminal C, a NO terminal NO, and an NC terminal NC.

Reference numeral 10 denotes a panel such as a power distribution board or switchboard, which has a door 16 attached to an iron box 13 with an open front. Inside the iron box 13, claws 5 having spring properties for fixing the circuit breaker 4 are provided. As shown in FIG. 8, a plurality of circuit breakers 4 are installed in the iron box 13 for branching purposes by fitting the pawl holes 6a into the pawls 5 and holding the narrow rear portions in the pawls 5. Similarly, a time switch 9 is compactly mounted in an iron box 13 adjacent to the circuit breaker 4 using claws 5. Furthermore, a large main circuit breaker 21 and an electromagnetic switch 22 are installed inside the iron box 13, and these are connected with a conductive bus bar 23, a wiring wire 24, etc., as shown in Fig. 10. The electromagnetic switch 22 is connected by the time switch 9.
can be opened or closed at a predetermined time. In this way, the time switch 9 can be fixed to the claw 5 for fixing the circuit breaker 4 through the claw hole 6, so the time switch 9 can be fixed to the circuit breaker 4 without any special mounting means.
It can be easily fixed with one touch using the fixing claws 5. Furthermore, as shown in FIG. 9, an inner door 11 is attached to the front of the iron box 13 to cover the equipment and ensure the safety of workers.
1. Openings 25, 26, 12, and 27 for operating the time switch 9 and the electromagnetic switch 22 are bored. In this way, since the time switch 9 is formed in the same shape as the circuit breaker 4, the fixing claw 5 and the operating opening 12 can be shared with the circuit breaker 4, and the time switch 9 is arranged integrally with the circuit breaker 4. Not only can it be installed compactly with a good appearance, the wiring method can be the same as that of the circuit breaker 4, so there is no wiring mistake, and the time switch 9 or equipment used as a load will not be damaged. The time switch 9 and the circuit breaker 4 can be interchanged as needed, and the design can be freely designed and used to suit the application. Further, since the time switch 9 is standardized like the circuit breaker 4, there is no fear that the inner door 11 cannot be fixed.

The one shown in FIG. 11 is another example of incorporating the time switch 9 into the board 10, in which two time switches 9 are provided, and the one shown in FIG. 12 is one in which an inner door 11 is attached to it.

The one shown in FIG. 13 is another example of the present invention, and is a motor type time switch 9. That is, a dial 28 that rotates with the passage of time is provided on the protruding surface portion 40 on the front surface of the time switch main body 3, and this dial 28 serves as the display device 1, and a 24-hour time scale 29 is provided on its outer periphery. The current time can be set and read by reading this time scale 29 with the current time indicator 30.
The timer time can be set by turning the time input operation section 2 such as the ON setting element 31 and the OFF setting element 32 on the outer periphery of the dial 28. This motor-type time switch 9 has a circuit configuration as shown in FIG. 14, and a commercial AC power supply I is connected to the input terminal 8.
33 is a rotational drive unit consisting of a synchronous motor and a gear train, and 34 is a synchronous motor drive circuit. Therefore, the power supply circuit section 18 causes the synchronous motor drive circuit 3 to
4. A necessary DC voltage is applied to the motor of the rotation drive section 33 and the relay drive circuit section 20. The synchronous motor drive circuit 34 generates a motor input waveform that rotates the synchronous motor, and this motor input waveform causes the synchronous motor to rotate, and the gear train decelerates the dial 28 so that it rotates once a day. The dial 28 rotates once a day and displays the current time using an indicator 30 on the front of the time switch 9.
In addition, the timer time is set by moving the ON setting element 31 or OFF setting element 32 provided on the dial 28, and the claws of the setting elements 31 and 32 open and close contacts of a micro switch, etc., thereby generating an ON signal or an OFF signal. occurs. This signal is sent to the relay drive circuit section 20 to drive the relay, generate an ON signal or an OFF signal at the output terminal 7, or cause current to operate the load to flow. Figure 15 shows this motor type time switch 9 in a metal box 13 on a panel 10.
Figure 16 shows the iron box 1.
3 shows a state in which the inner door 11 is fixed to the front surface of the case.

As described above, the present invention relates to a distribution board and a circuit breaker in which the circuit breaker is fixed by locking claws provided on the panel into claw holes provided on both sides of the rear protrusion of the main body of the hardwired circuit breaker. In a panel such as a power distribution board, the time switch body is formed to have the same external dimensions as the circuit breaker body, and claw holes are provided on both sides of the rear protrusion of the time switch body at the same positions as the claw holes provided in the circuit breaker. An output terminal and an input terminal are provided on the side of the time switch body at the same positions as the output terminal and input terminal provided on the circuit breaker, and a set time is provided on the front surface of the protruding surface of the time switch body. The time switch, which is formed by providing a display device for display and a time input operation section, is fixed to the board by locking the claws provided on the board into the claw holes of the time switch. The time switch can be fixed with one touch using the same fixing method as the circuit breaker using the circuit breaker fixing claws provided on the panel, and the time switch can be easily and quickly installed together with the circuit breaker on the distribution board without the need for any special installation method. It has the advantage of being able to be installed inside the equipment. Furthermore, the fixing means of the time switch is the same as that of the circuit breaker, the positions of the claw holes and input/output terminals are the same as those of the circuit breaker specified by certain standards, and the display device and time input operation section are the same. Since the time switch is located on the same front protruding surface as the operating knob of the circuit breaker, the time switch can be formed into the same shape and dimensions as the circuit breaker (that is, the time switch can be standardized to the same specifications as the circuit breaker), As a result, the time switch can be installed in a well-balanced manner or integrally with the circuit breaker within the panel, eliminating unnecessary space for installation and wiring, making the panel itself more compact, and furthermore, the location and shape of the time switch terminals. This has the advantage that the terminals are the same as the circuit breaker terminals, which improves the appearance, reduces wiring mistakes, and reduces the occurrence of accidents. Furthermore, since the time switch is standardized to be the same as the circuit breaker, there is no possibility that the inner door cannot be fixed, and the operability and safety of the power distribution section, which is the original function of the panel, is ensured. In addition, since the time switch and circuit breaker are compatible, you can freely design the time switch and circuit breaker by changing their positions when assembling the panel, and if retrofitting to an existing panel, you can use a spare circuit breaker. The time switch can be easily installed by replacing the time switch and the time switch, and the opening for the circuit breaker can be used as the opening for the time switch, which has the advantage that there is no need to process the inner door. Furthermore, a protruding surface portion that protrudes from the front surface of the time switch body is provided, and a display device for displaying the set time and a time input operation portion are provided on the front surface of this protruding surface portion. The display device can be arranged in an easy-to-see manner, and the time input operation section can be arranged in an easy-to-operate manner.
In addition, when an opening is provided in the inner door of the switchboard to which the time switch is installed, the protruding surface portion is fitted into this opening to expose the display device and time input operation section, making display and operation easier. Moreover, by providing a protruding surface part that protrudes from the time switch body, the display device and time input operation part provided on this protruding surface part can be connected to the output terminal on the side surface of the rear end of the time switch body. This has the advantage that the insulation distance from the input terminal and input terminal can be increased, and the time switch can be operated safely.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing a conventional time switch incorporated into the panel, Figure 2 is a perspective view showing the inner door fixed to the front of the same panel, and Figure 3 is a perspective view of the conventional time switch. Fig. 4 is a perspective view showing a state in which the inner door is fixed to the front surface of the same board, and Fig. 5 is a perspective view showing an embodiment of the present invention. , Fig. 6 is a block diagram showing the circuit of the above-mentioned time switch, Fig. 7 a and b are front and side views of the circuit breaker, and Fig. 8 shows how the time switch and circuit breaker of the present invention are assembled in the panel. Figure 9 is a perspective view showing the inner door fixed to the front of the same panel, Figure 10 is a wiring diagram showing the wiring inside the same panel, Figure 11 is the time switch. FIG. 12 is a perspective view showing a state in which the inner door is fixed to the front surface of the same panel as above, and FIG. FIG. 14 is a block diagram showing the circuit of the above time switch, FIG. 15 is a perspective view showing the above time switch incorporated in the board, and FIG. 16 is a front view of the above board. FIG. 3 is a perspective view showing a state in which the inner door is fixed. DESCRIPTION OF SYMBOLS 1... Display device, 2... Time input operation part, 3... Time switch main body, 4... Circuit breaker, 5... Claw, 6... Claw hole, 7... Output terminal, 8... Input terminal, 9... Time switch, 10... Panel , 40...Protrusion surface part, 41... Rear protrusion part.

Claims (1)

[Claims] 1. In a panel such as a power distribution board or switchboard in which the circuit breaker is fixed by locking claws provided on the panel into claw holes provided on both sides of the rear protrusion of the molded circuit breaker body, The time switch body is formed to have the same external dimensions as the circuit breaker body, and claw holes are provided on both sides of the rear protrusion of the time switch body at the same positions as the claw holes provided in the circuit breaker. Output terminals and input terminals are provided on the side of the switch body at the same positions as the output terminals and input terminals provided on the circuit breaker, and a display device for displaying the set time is provided on the front of the protruding surface on the front surface of the time switch body. A power distribution board, switchboard, etc., characterized in that a time switch formed by providing a time input operation part is fixed to the board by locking a claw provided on the board into the claw hole of the time switch. board.