JPH0237555B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a time switch to be incorporated into a distribution board or the like.

[Background Art] This type of time switch 9' is assembled as a whole, and the distribution board has the following components as shown in FIG.
It was built into an iron box 13 together with a main circuit breaker 21, a branch circuit breaker 4, an electromagnetic switch 22, etc., and wired as shown in FIG. Reference numeral 11 in FIG. 2 is an inner door 11 fixed to the front of the iron box 13 for safety.

Here, the conventional time switch 9' is
Because the positional relationship between the time display section, operation section, and input/output terminals is constant, the mounting position and mounting direction of the time switch 9' are limited, which complicates wiring and creates unnecessary space, making it difficult to distribute electricity. This increases the size of the panel, and if the time switch is intentionally installed sideways to ensure proper display, the display becomes difficult to read and operation becomes difficult, leading to incorrect operation. In order to avoid this, it was necessary to prepare four types of time switches 9' with different orientations of the display section and operation section.

[Object of the Invention] The present invention has been made in view of the above points, and its purpose is to enable the terminal to be attached in any direction, up or down or left or right, and to be able to attach the terminal regardless of the direction of attachment. To provide a time switch which is easy to use, allows display means, operation means, etc. to be oriented in the correct direction without any problems, and is free from the risk of erroneous operation.

[Disclosure of the Invention] The present invention provides a time switch main body that is provided with a terminal portion and a fixing means on the side and a substantially rectangular opening on the front surface, and a time display means and all operation means for setting the time. The display unit has a substantially rectangular outer shape that is removably fitted into the opening of the time switch body, and the direction in which the display unit is attached to the time switch body can be changed at predetermined angles. It is characterized by having a mounting part with a By changing the orientation of the display unit relative to the clock, the time display means and all operating means can be placed in the normal orientation.

The present invention will be described in detail below based on the illustrated embodiment. What is shown in FIG. It is constructed of a main body 3 and a display unit 35.

The time switch main body 3 has a narrow rear end, and an output terminal 7 having a terminal screw 15 is provided on one side of the rear end, and an input terminal 8 having a terminal screw 15 on the other side of the rear end. A rectangular parallelepiped recess 36 with a square opening is formed on the front surface, and engaged portions 39 are recessed on each inner peripheral surface of the recess 36. has been done.

The display unit 35 is formed into a substantially rectangular parallelepiped with a square front face, and is equipped with a digital display device 1 as a time display means on the front face, and a time input operation section 2 consisting of a set switch 17 etc. as an operation means. It is equipped with The housing 40 of the display unit 35 is made of synthetic resin, and as shown in FIGS. 6 and 7, the rear end side of each surface of the outer peripheral surface of the housing 40 has flexibility, and the tip has flexibility. An elastic engagement piece 38 is provided with a protrusion 41 that engages with the engaged portion 39 .

In addition, the display unit 35 is the time switch main body 3.
It is electrically connected to the time switch body 3 by twistable lead wires 43 and 44 led out from the recess 36 and passed through the back cover 42.

When the rear end side of the display unit 35 is inserted into the recess 36 through the front opening of the time switch body 3, the projection 41 of the elastic engagement piece 38 is engaged with the engaged portion 39, and the display unit 35 is recessed. It is fixed within the location 36. At this time, the display unit 35 is fixed to the time switch body 3 in a manner that it can be attached to and detached from the time switch body 3 and not shake even when subjected to impact or vibration.

Further, the housing 4 protrudes from inside the recess 36 when the display unit 35 is fitted into the recess 36.
Since there are recesses 37 on the front end of each surface of the outer circumferential surface of the time switch body 3, in which the fingertips can get stuck, when the display unit 35 is removed from the time switch body 3, the fingers are likely to get caught, and the display unit may get stuck. 36 is easy to grasp.

Then, put your finger in the recess 37 and pull out the display unit 35 from the time switch body 3, rotate it every 90 degrees, and fit it into the recess 36 again to set the display unit 35 to the timer. It can be attached to the switch body 3 at four different angles. (For example, Figures 8 and 9
figure).

This time switch 9 has a circuit configuration as shown in FIG. 5, and the time switch main body 3 is equipped with the above-mentioned input/output terminals 8 and 7 on the outside, and also has a power supply circuit section 18 and a relay drive circuit inside. It has a built-in section 20. The display unit 35 has a display device 1 and a time input operation section 2 on the front, and also has a built-in printed circuit board 45 on which a microcomputer 19 is mounted, and the time switch main body 3 and the display unit 35 are Display unit 35
Two power lead wires 43 for driving the
and one lead wire 44 for transmitting an on signal or an off signal to the relay drive circuit section 20. Time switch body 3
A commercial AC power supply I is connected to the input terminal 8 of the .

The power supply circuit section 18 applies a necessary DC voltage to each section such as the microcomputer 19, the display device 1, and the relay drive circuit section 20.
Correction of the current time and setting of the timer time at which an on signal or an off signal is desired are performed by operating the time input operation section 2 arranged on the front of the display unit 35.

The microcomputer 19 has a clock input clock, and the microcomputer 19 counts this clock input clock to mark the current time, and the display device 1 displays the current time and timer time based on a signal from the microcomputer 19. Further, the microcomputer 19 counts the clock input and compares the current time with the timer time to generate an on signal or an off signal, and this signal from the microcomputer 19 is sent to the relay drive circuit section 20. , relay (not shown)
and controls the load by switching the output terminal 7. Note that the three output terminals 7 are formed by a common terminal C, a normally open terminal NO, and a normally closed terminal NC.

FIG. 10 shows the time switch 9 installed in a power distribution board together with a collective circuit breaker 4 for a lighting distribution board. The circuit breaker 4 has an operating handle 14 exposed on its front surface, claw holes (not shown) provided at a constant pitch on both ends of the narrow rear end, and one end of the rear end. Output terminal 7 on the side (not shown. Same shape as the time switch,
On the other side of the rear end side, input terminals (not shown; the same shape and the same position as those of the time switch) are provided at a constant pitch.

The external shape, dimensions, etc. of this collective type molded circuit breaker 4 for power distribution boards meet certain standards (Japan Electrical Manufacturers Association regulations)
JEM, Classification: Regulation 12, Page 2-1), and the time switch body 3 of the time switch 9 mentioned above also has the same shape as the circuit breaker 4 in accordance with this standard.
are formed to have the same dimensions.

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, there is provided a spring-like claw 5 for fixing the circuit breaker 4. . The time switch 9 can be installed in the iron box 13 of the panel 10 by any mounting means, but the same pawl hole as the circuit breaker 4 is provided and the pawl 5 is inserted in the same way as the circuit breaker 4.
It is recommended that it be fitted into the In this case, nail 5
This allows a plurality of circuit breakers 4 to be installed in the iron box 13 and, at the same time, the time switch 9 to be installed adjacent to the circuit breakers 4, so that the structure can be made compact.

A large main circuit breaker 21 and an electromagnetic switch 22 are installed inside the iron box 13, but these, the circuit breaker 4, and the time switch 9 are connected to a conductive bus bar 23, a wiring wire 24, etc. connected by the third
The connections are made in the same manner as shown in the figure, and the electromagnetic switch 22 can be turned on and off at a predetermined time using a time switch 9.

Figure 11 shows the inner door 1 that covers the equipment on the front of the iron box 13.
1 is shown. The inner door 11 here has openings 25 and 2 for operating the circuit breakers 4 and 21, the time switch 9, and the electromagnetic switch 22.
6, 12, and 27 are perforated. FIG. 12 shows another state in which the time switch 9 is incorporated into the board 10.

The input terminal 8 and output terminal 7 of the time switch 9 are oriented either up, down, left or right on a case-by-case basis in order to make the time switch 9 easier to use and more compact depending on the site, but in any case the display unit 35 can be taken out of the time switch body 3 once and set to face in the correct direction, so the display device 1 and the operating means can be oriented in the normal direction without being affected by the orientation of the time switch body 3. can.

What is shown in FIG. 13 is another example of the present invention,
This is a motor type time switch 9. That is,
A dial 28 that rotates with the passage of time is provided on the front surface of the display unit 35, and a 24-hour time scale 29 is provided on its outer periphery.This time scale 28 is read with a current time indicator 30 to indicate the current time. The time can be set and read, and the timer time can be set by turning the time input operation section 2 such as the ON setting element 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. 8 is connected to a commercial AC power supply A.

The synchronous motor drive circuit 3 is powered by the power supply circuit section 18.
4. Necessary DC voltage is supplied to the motor of the rotation drive unit 33, the relay drive circuit unit 20, etc., and the synchronous motor drive circuit 34 creates a motor input waveform that rotates the synchronous motor, and synchronizes with this motor input waveform. The motor is rotated and the speed is reduced by a gear train so that the dial 28 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 and control the load connected to the output terminal 7.

[Effects of the Invention] As described above, in the present invention, the display unit having the time display means and all operation means for time setting on the front surface is removably fitted into the approximately rectangular opening of the time switch body. It also has a mounting part with a substantially rectangular shape that allows the mounting direction of the display unit to the time switch body to be changed at predetermined angles. Even if the mounting direction of the time switch body is reversed from left to right or reversed from top to bottom and left to right, it is possible to maintain the normal vertical direction of the time display means and all operation means for time setting in the display unit. Therefore, it is possible not only to avoid misreading the time displayed on the time display means, but also to easily and reliably set the time by operating all the operation means for setting the time. Furthermore, there is no need to prepare multiple types of display units with different orientations, and furthermore, the mounting part of the display unit having a substantially rectangular outer shape is fitted into the substantially rectangular opening. Therefore, the display unit will not move inadvertently after it is installed, making the display difficult to see.

[Brief explanation of drawings]

Figure 1 is a perspective view of a panel incorporating a conventional time switch, Figure 2 is a perspective view of the same panel with the inner door fixed, Figure 3 is a circuit diagram showing the wiring inside the same panel, Figure 4 is an exploded perspective view of one embodiment of the present invention;
The figure is a block circuit diagram of the same as the above, FIG. 6 is a perspective view showing the back side of the same as the above display unit, FIG. 7 is a partial sectional view of the same as the above display unit, and FIGS. Fig. 10 is a perspective view showing the state in which the inner door is fixed to the above board, Fig. 11 is a perspective view showing the state in which the inner door is fixed to the above board, Fig. 12 13 is a perspective view showing another example of how it is assembled into the same board as above.
The figure is a perspective view of another embodiment, and FIG. 14 is a block circuit diagram of the same as above, in which 1 is a display device, 2 is a time input operation section, 3 is a time switch body, and 35 is a display unit.

Claims (1)

[Scope of Claims] 1. A time switch main body which is provided with a terminal portion and attachment/fixing means on the side and has a substantially rectangular opening on the front, and a time display means and all operation means for setting the time on the front. The display unit is removably fitted into the opening of the time switch body, and has a substantially rectangular outer shape that allows the direction of attachment of the display unit to the time switch body to be varied at predetermined angles. A time switch characterized by having a part. 2. The time switch according to claim 1, wherein the display unit has a recessed portion on its outer peripheral surface for catching a finger. 3. The display unit has an outer circumferential surface made of synthetic resin and is provided with an elastic engagement piece on the outer circumference, and the time switch main body has an engaged part in which the elastic engagement piece engages in the opening. 3. The time switch according to claim 1 or 2, further comprising a joint portion.