JPH0718938B2 - Time switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a time switch to be incorporated into a distribution board or the like, and its gist is to provide a back surface of a display unit (35) provided with a time display means and a time setting operation means. One set of electrical connection pins (43) (44) projecting from the set, and a plurality of sets of pin receiving holes (48) (49) are provided in the time switch body (3) provided with terminals and mounting means for electrical connection. Pins (43) (44)
The display unit (35) and the time switch body (3) are electrically coupled by inserting the pin into the pin receiving holes (48) and (49) so that the display unit (35) can be inserted into the time switch body (3). The display unit (35) of the above-mentioned plurality of sets of pin receiving holes (48) (49) is mounted on the
The time switch is characterized in that it is arranged and provided at a position corresponding to the electric connection pins (43, 44) for each mounting angle.

In the prior art, as shown in FIG. 1, a time switch (9) ', which is wholly assembled integrally, is provided with a main circuit breaker (21), a branch circuit breaker (4), an electromagnetic switch ( 22), etc., and install it in the iron box (13) and wire as shown in Fig. 3,
As shown in Fig. 2, the inner door (11) was fixed to the front of the iron box (13) for safety. In this time switch (9) ', the positional relationship between the time display and the input / output terminals is shown. Since the time switch (9) 'is fixed, the mounting position and mounting direction of the time switch (9)' are limited, wiring becomes complicated and unnecessary space is created, and the distribution board and the like become large. If it is mounted sideways, the display may be difficult to read, and the equipment may be damaged by an incorrect operation, or four types of time switches (9) 'with different display directions must be prepared. It was

The present invention has been made in view of the above-mentioned drawbacks of the conventional example, and an object thereof is to change the direction of the force output terminal up and down.
It can be installed in either the left or right direction, and the display and operating means are oriented in the correct direction for easy use, there is no risk of erroneous operation, and the display unit can be easily repaired. To provide a switch.

The present invention will be described in detail below with reference to the accompanying drawings. FIG. 4 shows an electronic time switch (9) for agreement type wiring for a light distribution board, in which the time switch body (3) and the display unit (35) are formed separately. The rear end of the time switch body (3) is formed narrow, and the output terminal (7) having the terminal screw (15) is provided on one side surface of the rear end portion.
An input terminal (8) having a terminal screw (15) is provided on the other side surface of the rear end portion, and a rectangular parallelepiped recess (36) having a square opening is formed on the front surface. Engagement portions (39) are provided on the inner peripheral surfaces of the recesses (36), respectively. The display unit (35) is formed into a substantially rectangular parallelepiped whose front surface is a square shape. On the front surface, a time input means including a digital display device (1) as time display means and a set switch (17) as operation means. Operation part (2)
And the housing (40) of the display unit (35) is made of synthetic resin.
As shown in the figure, each of the outer peripheral surfaces of the housing (40) is provided with a flexible elastic engaging piece (38), and the elastic engaging piece (3
A projection (41) for fitting with the engaged portion (39) is provided at the tip of 8), and the display unit (35) is fitted into the recess (36) of the time switch body (3). And the projection (41) of the elastic locking piece (38) are locked in the engaged part (39), and the display unit (35) does not rattle in the recess (36) and can be easily attached and detached. It is fixed so that it is strong against vibration and shock. Also, with the display unit (35) fitted in the recess (36), fingertips may be caught on each of the outer peripheral surfaces of the housing (40) protruding from the recess (36). The recessed portion (37) is provided as a recess so that the connection is easy and the display unit (35) is easily gripped. As shown in Fig. 6, one electrical connection pin (44) for signal transmission is provided in the center of the rear surface of the display unit (35), and two electrical connection pins for power supply are provided around it. The display unit (35) is provided with a set of three electrical connection pins (43) (44). Also, as shown in FIG. 5, one pin receiving hole (49) for signal transmission is provided at the center of the inner surface of the recess (36) of the time switch body (3). Four sets of pin receiving holes (48) for the power supply are provided around it at 90 degree angles, and the corresponding pin receiving holes (48) are electrically connected by lead wires (50). The time switch body (3) has a plurality of sets of pin receiving holes (48) (4) with a common pin receiving hole (49).
9) is provided. Display unit (35)
Put your finger on the recessed part (37) and insert the time switch body (3).
Pull out from the unit and insert it again into the recess (36) while rotating it by 90 degrees, and insert the electrical connection pins (43) (44) of the display unit (35) into the pin receiving holes of the time switch body (3). (48) (49) can be inserted and electrically connected to each other, and the display unit (35) can be attached to the time switch body (3) at four angles (for example, , Figures 10 and 11). The time switch (9) has a circuit configuration as shown in FIG. 9, and the time switch body (3) has input / output terminals (8) and (7) mounted on the outside and a power circuit section inside. (18) and the relay drive circuit section (20) are built-in, while the display unit (35) is provided with the display device (1) and the time input operation section (2) on the front side. Printed circuit board (45)
A micro computer (19) is mounted on the top, and the time switch body (3) and the display unit (35) are two power supply electrical connection pins (43) for driving the display unit (35). , One electrical connection pin (4 for transmitting ON signal or OFF signal to the relay drive circuit (20)
4) is electrically coupled to the input terminal (8) of the time switch body (3), and the commercial AC power supply (a) is connected to the input terminal (8). Then, the power supply circuit section (18) applies a necessary DC voltage (b) to the microcomputer (19), the display device (1) and the relay drive circuit section (20).
The correction of the current time and the setting of the timer time for obtaining the ON signal or the OFF signal are performed by operating the time input operation unit (2). The micro computer (19) has a clock input (c), and the micro computer (19)
Counts this clock input (c) to mark the current time, and the display device (1) displays the current time and the timer time by the signal (d) from the microcomputer (19). Further, the micro computer (19) counts the clock input (c) and compares the current time with the timer time to generate an ON signal or an OFF signal, and this signal (e) is relay-driven from the micro computer (19). Circuit part (2
0) to drive a relay (not shown) to generate an ON signal or an OFF signal at the output terminal (7), or to supply a current for operating the load. The three output terminals (7) are common terminal (C), NO terminal (NO) and NC terminal (N).
C).

(4) is an agreement type wiring circuit breaker for a light distribution board, and the operation terminal (14) is exposed on the front surface of the circuit breaker (4),
Nail holes (not shown) are provided on both sides of the narrow rear end with constant pitches, and an output terminal (not shown. Same shape and shape as those of the time switch) is provided on one side face of the rear end. Position) is provided by a constant hitch, and an input terminal (not shown; the same shape and position as that of the time switch) is provided by a constant pitch on the other side surface of the rear end portion. The external shape, dimensions, etc. of the agreement type circuit breaker (4) for the distribution board have been set to a certain standard (Japan Electric Industry Association standard JEM, classification: control 12, page 2-1). The time switch (9) is formed in the same shape and the same size as the circuit breaker (4) in accordance with this standard except for the display device (1) and the time input operation unit (2) on the front surface.

(10) is a panel such as a distribution board or a distribution board in which a door (16) is attached to an iron box (13) having a front opening, and the iron box (13) has a spring property for fixing the breaker (4). A claw (5) having is provided.
Any mounting means may be used to mount the time switch (9) in the iron box (13) of the board (10), but the same pawl hole as that of the circuit breaker (4) is provided to provide the same pawl (4) as the circuit breaker (4). You may make it fit in 5). Further, a plurality of circuit breakers (4) are mounted in the iron box (13) by the pawls (5) as in the prior art, and the time switch (9) is compactly installed adjacent to the circuit breaker (4). Further, a large main circuit breaker (21) for main trunk and an electromagnetic switch (22) are mounted in the iron box (13), and these are connected to a conductive bus bar (23) and a wiring electric wire (24). The wiring is made in the same manner as in FIG. 3 by connecting them with each other, and the electromagnetic switch (22) can be opened or closed at a predetermined time by the time switch (9). Furthermore, as shown in Fig. 13, the iron box (1
The inside door (11) is attached to the front of (3) to cover the equipment for operator safety. The inside door (11) has a breaker (4).
(21), openings (25), (26), (12) and (27) for operating the time switch (9) and the electromagnetic switch (22) are perforated. FIG. 14 shows another state in which the time switch (9) is incorporated in the board (10). In this way, the time switch (9) is easy to use in the field depending on the convenience of use, and the input terminal (8) and the output terminal (7) face in either the up, down, left, or right direction in a case-by-case manner so as to be compact. In any case, the display unit (35) can be set so as to be oriented in the correct direction by taking it out from the time switch body (3) once. When repairing the display unit (35), etc., the display unit (3) should be fixed with the time switch body (3) fixed to the panel (10).
5) You can remove it and repair it.

FIG. 15 shows another example of the present invention, which is a motor type time switch (9). That is, display unit (35)
A dial (28) that rotates with the passage of time is provided on the front of the, and a 24-hour time scale (29) is provided on the outer periphery of the dial.
The time scale (29) can be read with the current time index (30) to set and read the current time (timetable time means), and the ON set (31) on the outer circumference of the dial (28). ) And an OFF setter (32), etc. can be turned to set the timer time (operation means). This motor type time switch (9) has a circuit configuration as shown in FIG. 16. The display unit (35) includes a rotary drive unit (33) including a synchronous motor and a gear train, and a motor drive circuit (34) for the same unit. Is built in, and a commercial AC power supply (a) is connected to the input terminal (8). Then, the synchronous motor drive circuit (3
4) The necessary DC voltage (b) is applied to the motor of the rotation drive section (33) and the relay drive circuit section (20). The synchronous motor drive circuit (34) creates a motor input waveform (f) that rotates the synchronous motor, and this synchronous motor input waveform (f) causes the synchronous motor to rotate.
Is slowed down to make one revolution per day. The dial (28) rotates once a day and displays the present time by the index (30) on the front of the time switch (9). Also, dial (2
8) The ON setter (31) or OFF setter (32) provided in it is moved to set the timer time, and the contacts of the microswitch etc. are opened and closed by the pawls of the setters (31) (32). Generates an ON signal or OFF signal. This signal (g) 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), and supply a current for driving the load.

As described above, according to the present invention, one set of electrical connection pins is provided on the rear surface of the display unit provided with the time display means and the operation means for setting the time, and a plurality of sets are provided in the time switch body provided with the terminal portion and the attachment means. A pin receiving hole is provided, and the electrical connection pin is inserted into the pin receiving hole so that the display unit and the time switch body can be electrically coupled and the display unit can be attached to the time switch body in a variable relative angle and detachably. Since each set of the above-mentioned plurality of sets of pin receiving holes is arranged at a position corresponding to the electric connecting pin for each mounting angle of the display unit, the electric connecting pin is inserted into each set corresponding to the pin receiving hole. Allows the display unit to be attached to the time switch body at different relative angles while ensuring the electrical connection between the display unit and the time switch body. It is possible to freely change the positional relationship between the terminal part of the main body of the switch and the time display means of the display unit, so that there is no restriction on the mounting state of the time switch depending on the terminal position, and there is no unnecessary space for the time switch body. It can be installed compactly, the size of the panel can be reduced, and the display unit can be installed in the correct direction regardless of the orientation of the time switch body. There is no fear, and there is an advantage that the device is not damaged by the operation. Also, one type of time switch can handle each mounting state. Further, when the display unit is to be repaired, there is an advantage that only the display unit can be removed from the panel and the repair can be easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a conventional time switch is incorporated in a board, FIG. 2 is a perspective view showing a state in which an inner door is fixed to the front surface of the board, and FIG. Fig. 4 is a partially exploded perspective view showing an embodiment of the present invention, Fig. 5 is a front view of the time switch body, Fig. 6 is a rear view of the display unit, and Fig. 7 is the same as above. Fig. 8 is a perspective view showing the back of the display unit of Fig. 8, Fig. 8 is an enlarged sectional view of the same unit with a part broken away, and Fig. 9 is a block diagram showing the circuit of the time switch.
10 and 11 are perspective views showing a set state in which the display unit in the time switch body is different, and FIG. 12 is a perspective view showing a state in which the time switch, the circuit breaker, etc. of the present invention are incorporated in the panel. , FIG. 13 is a perspective view showing a state in which the middle door is fixed to the front surface of the above board, FIG. 14 is a perspective view showing another state in which a time switch, a circuit breaker and the like are incorporated in the board, FIG. Is a perspective view showing another example of the present invention, and FIG. 16 is a block diagram showing a time switch circuit of the above. (3) …… Switch main unit, (35) …… Display unit,
(43) (44) …… electrical connection pins, (48) (49) …… pin receiving holes.

Claims (4)

[Claims] 1. A set of electrical connection pins projecting from the back of a display unit provided with a time display means and a time setting operation means, and a plurality of sets of pins on a time switch body provided with a terminal portion and mounting means. A receiving hole is provided, and an electric connection pin is inserted into the pin receiving hole so that the display unit and the time switch body are electrically coupled, and the display unit is detachably attached to the time switch body in a variable relative angle. A time switch, wherein each set of the plurality of sets of pin receiving holes is arranged and provided at a position corresponding to an electric connection pin for each mounting angle of the display unit. 2. A regular square recess is provided on the front surface of the time switch main body, and a regular square display unit is detachably fitted in the recess. Time switch. 3. The time switch according to claim 1 or 2, wherein a concave portion for hooking a finger is provided on the outer peripheral surface of the display unit. 4. An outer peripheral surface of a display unit is formed of synthetic resin, an elastic engaging piece is provided on the outer peripheral surface, and an engaged portion for engaging with the elastic engaging piece is provided on the time switch body. The time switch according to claim 1, claim 2, or claim 3.