JPH075748Y2 - Remote control terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a remote control terminal device for controlling a lighting load.

[Prior Art] FIG. 9 is a diagram showing an example of the configuration of a remote monitoring and controlling system of this type, which includes a central controller 1, a plurality of monitoring terminals 2 and control terminals to which unique addresses are set. 3 is connected by a pair of signal lines 4, and the transmission signal Vs sent from the central control unit 1 to the signal line 4 is a start pulse indicating the start of signal sending, as shown in FIG. 10 (a). Signal ST,
A mode data signal MD indicating a signal mode, an address data signal AD for calling the terminals 2 and 3, loads L ₁ , L ₂ , L ₃₁ , L ₃₂ ......
Control data signal CD, checksum data signal
It is a multi-pole (± 24V) time division multiplexed signal composed of a return standby signal WT for setting a return signal period from the CS and the terminals 2 and 3, and data is transmitted by pulse width modulation. Each of the terminals 2 and 3 takes in control data of the transmission signal Vs when the address data of the transmission signal Vs received via the signal line 4 and its own unique address data match, and returns the transmission signal Vs. In synchronization with the standby signal WT, the monitor data signal is sent back as a current mode signal (a signal sent by short-circuiting the signal lines 4 via an appropriate low impedance).

Further, to the central control unit 1, a dummy signal transmitting means for constantly transmitting the dummy transmission signal Vs in which the mode data signal MD is set to the dummy mode, and one of the monitoring terminal devices 2 for returning the dummy signal are shown in FIG. When the interrupt signal Vi as shown in (1) is received, an interrupt processing means for detecting the interrupt generating terminal device 2, accessing the terminal device 2 and returning the monitoring data is provided. On the other hand, when the monitoring terminal 2 receives a monitoring input by operating the switches S ₁ , S ₂₁ , S ₂₃ , S ₃₁ ... S ₃ n, it synchronizes with the start pulse signal ST of the dummy transmission signal Vs. And generate an interrupt signal Vi,
Transmission signal Vs from the central controller 1 in the address confirmation mode
Interrupt return means for returning its own unique address data in synchronism with the return standby signal WT, and the transmission signal Vs in the interrupt access mode in response to the interrupt from the central control unit 1.
And data return means for returning the monitor data corresponding to the monitor input when the data is transmitted. Further, the central control device 1 creates control data to be transmitted to the control terminal device 3 based on the monitoring data returned from the monitoring terminal device 2 to the central control device 1, and at the same time, the control terminal device 3
To control the loads L ₁ , L ₂ , L ₃₁ , L ₃₂ .... The control terminal 3 arranged in the distribution board 6 or the relay control board 6a has a contracted size for the distribution board, and its control output allows a remote control relay for load control (also turned on by a hand switch). , The latching relay 5 that can be turned off is controlled.

FIG. 11 shows the circuit configuration of the control terminal device 3. The control terminal device 3 uses the transmission signal Vs transmitted via the signal line 4.
A power supply circuit 10 that forms a circuit power supply, a signal processing circuit 11 that receives the transmission signal Vs and performs signal processing and forms a return signal V _B and transmits the signal, and an address setting unit 12 that sets a unique address, The load number setting unit 13 that selects a bit of control data, the drive circuit 14 that drives the output relay 15 for load control, and the monitoring circuit 16 that monitors the operating state, the signal processing circuit 11, A match between the address data of the transmission signal Vs and the unique address is detected, and when the address match is detected, the control data is fetched and the control output Vc is formed based on a predetermined control bit to drive the output relay 15 and the monitoring circuit 16 The monitor data for return is formed on the basis of the monitor input inputted via the, and is returned to the central controller 1 by the return signal V _B in the power mode. For setting the unique addresses of the monitoring terminal device 2 and the control terminal device 3, the lower 6 bits of the 8-bit address data are set by the user as a user setting unit, and the upper 2 bits are set as the terminal device. It is a maker setting section that indicates the type (for monitoring and control) of the
Both terminal units 2 and 3 can be easily made to correspond by simply setting the user setting part of the unique address of 3 to the same value, and based on the monitoring data returned from the monitoring terminal unit 2 set to the same value. In addition, the load connected to the control terminal 3 can be controlled.

The control terminal 3 is composed of a terminal block 21 and a relay unit 31 as shown in FIGS. 7 and 8, and the terminal block 21 and the relay unit 31 are of a separate type. A terminal portion 22 to which the signal line 4 is connected is formed at one end of the terminal block 21, and a load terminal portion 23 to which a power supply line for the power supply of the lighting load is connected is provided at the other end. There is. A terminal cover 24 made of an insulating material for insulation is attached to the terminal portion 23. Also, on the upper surface of the terminal block 21, a pair of blade insertion holes 2
Two sets of 5,26 are drilled. Further, locking holes 27 are formed at both ends of the terminal block 21, respectively.

The relay unit 31 is configured as follows. The flat body 32 made of insulating material has a blade insertion port for the terminal block 21.
Two pairs of plug blades 36, 37 to be inserted into 25, 26 are embedded. Two printed boards 34 and 35 are arranged on the upper surface of the body 32, and the lower printed board 35 and the upper ends of the blades 36 and 37 are connected to each other. On the other printed board 35, a switch such as a DIP switch that constitutes the address setting unit 12
A plurality of 41 are arranged. The cover 33 that covers the upper surface of the body 32 is formed in a box shape with an open lower surface.
Opening windows 33a, 33 exposing the address setting unit 12 on the lower surface of the
b is formed. From the bottom edge on both sides of the cover 33, fix pieces 3
9 are vertically provided integrally with each other, and a locking hole 40 is formed in this fixing piece 39. The locking projections 32a protruding from both sides of the body 32 are inserted and locked into the locking holes 40 of the fixing piece 39, and the cover 33 is fixed to the body 32. Further, an elastic fixing lever 38 is projected from the notch 42 on the side surface of the cover 33, and the locking portion 38a formed at the lower portion of the lever 38 is inserted and locked in the locking hole 27 of the terminal block 21. By doing so, the relay unit 31 is detachably attached to the terminal block 21. When removing the relay unit 31 from the terminal block 21, when pushing the upper part of the lever 38 inward, the lower locking portion 38a spreads outward and the engagement with the locking hole 27 is released, so that the relay unit 31 is released to the terminal. Stand 21
Can be easily removed from.

Then, the relay unit 31 is attached to the terminal block 21, the transmission signal from the signal line 4 is input into the relay unit 31 via the terminal portion 22 and the blade 36, and the signal is processed as described above, The control data drives the load control relay,
The contact output controls the lighting load via the blade 37 and the load terminal portion 23. In order to standardize the lighting fixtures as a method of mounting the control terminal 3, the terminal blocks 21 are mounted on all the lighting fixtures, and after determining the control unit, the relay unit 31 is mounted.

FIG. 12 shows an example of the arrangement. To mount the control terminal 3 in the lighting fixture F, the terminal block 21 is first mounted to the mounting portion on the ceiling as described above, and then the address is determined. Then, the address is set by the address setting unit 12, and the relay unit 31 is attached to the terminal block 21. In addition, 29 is a ballast and 30 is a power supply line.

A so-called quick-connect terminal is used on the side of the terminal block 21 that receives the blades 36, 37. This quick-connect terminal is composed of a terminal plate and a lock spring.The blades 36 and 37 of the relay unit 31 are inserted between the terminal plate and the lock spring, and the blade is pushed by the elastic contact force of the lock spring. It is the one that makes an elastic contact with. Such a configuration has a problem that the holding force is insufficient, and particularly in the load terminal portion 23 that constitutes the main circuit on the load side to which the load is connected, the heat radiation area and the contact area with the blade are small, and heat is easily generated. is there. Furthermore,
The quick-connect terminal and the terminal board to which the conductor of the wire from the outside is connected are connected with a lead wire.Since this lead wire has a cross-sectional area of 2 mm ² , there is a margin for the allowable current. There is a problem that heat is generated without a problem.

[Problems to be Solved by the Invention] The present invention has been provided in view of the above-mentioned points, and is a remote control for the purpose of withstanding a high capacity of a load terminal portion on the main circuit side and making it difficult to generate heat. A terminal device for use is provided.

[Means for Solving the Problems] In the present invention, a plug blade connected to the load terminal portion side of a terminal block is projected from a relay unit, and the load terminal portion is a terminal to which an electric wire from the outside of the load side is connected. A plate, a blade receiving spring for sandwiching the blade with a pair of blade receiving spring plates, and a lead wire having a large cross-sectional area of a conductor connecting the terminal plate and the blade receiving spring.

[Operation] A blade receiving spring is configured by a pair of blade receiving spring plates, the blade is clamped by the pair of blade receiving spring plates to increase the contact area, and the terminal plate and the blade receiving spring are connected. The allowable current is increased by increasing the cross-sectional area of the conductor of the lead wire.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. Since the entire function is the same as the conventional one, the description thereof will be omitted and only the gist part will be described. As shown in FIG. 3, the terminal block 21 of this embodiment is different from the conventional shape, but has the same function and the like. The terminal block 21 includes a body 21a, a cover 21b, and a back plate.
The outer shell is formed by 21c, and a pair of terminal plates 45 forming the terminal portion 22 to which the signal line for remote control is connected in the body 21a.
And a pair of terminal plates 47 constituting the load terminal portion 23 to which the load is connected are respectively arranged. A plurality of blade receiving springs 46 on the terminal portion 22 side are arranged in a row on one side of the body 21a, and a pair of blade receiving springs 48 on the load terminal portion 23 side are disposed on the other side of the body 21a.

As shown in FIG. 2, the blade receiving spring 48 on the side of the load terminal portion 23 has a base portion 48a formed in a U shape, and elastic blade flat blade receiving spring plates 48b from the upper end thereof are elastically contacted with each other. It is formed so as to integrally extend upward. Also, the base portion 48 of the blade receiving spring 48
A flat plate-like connecting piece 48c is vertically provided from the lower end of a, and a claw 48d is cut out on the side surface. Blade spring 48
Is placed on the body 21a, and the nail 48d is used to
The blade receiving spring 48 is inserted into the body 21a by being hooked on the inner wall surface of the 21a so as not to come off. Blade spring 48
The pair of blade receiving spring plates 48b is in the form of a flat plate having a wide lateral width as described above, and the contact area with the blade 37 of the relay unit 31 inserted between the blade receiving spring plates 48b is increased,
At the same time, the holding power of the blade 37 is improved and the heat radiation area is expanded.

The load terminal portion 23, as shown in FIG.
And a substantially L-shaped terminal plate 47 to which an electric current from the load side is connected, and a lead wire 57 connecting the blade receiving spring 48 and the terminal plate 47.
And the conductor 57a of this lead wire 57.
Has a cross-sectional area of 3.5 mm ² and has a margin for the permissible current. As shown in FIG. 1, the connection between the lead wire 57 and the blade receiving spring 48 is spot welded to the inner surface of the connecting piece 48c.
I am doing 8. That is, the blade receiving spring 48 is laterally arranged so that the height thereof is lowered. Similar to the connection with the terminal board 47, spot welding 58 is performed. In this way, the contact connection with the blade 37 is made by the blade receiving spring plate 48b of the blade receiving spring 48.
In addition, by using a lead wire 57 having a large cross-sectional area, the heat generation could be reduced by about 15 ° C. from the conventional one. The terminal plate 45 of the control signal terminal portion 22 and the blade receiving spring 46 are connected by lead wires 59, respectively, as shown in FIG. 3 (c).

(Embodiment 2) FIGS. 4 to 6 show another embodiment of the load terminal portion 23,
The terminal plate 47 and the blade receiving spring 48 are integrally formed. That is, as shown in FIG. 5, the blade receiving spring 48 is formed on one end side of the terminal main body 60, and the terminal plate 47 formed on the other end is formed in a U shape, and the terminal plate 47 and the blade receiving spring 48 are formed. A press-fitting piece 61 is hung between and. In addition, the terminal plate 47 has a lock spring having elasticity.
62 is arranged, and the lock spring 62 elastically contacts the conductor of the electric wire inserted from the outside with the terminal plate 47 to make contact connection. Terminal block 21 corresponding to terminal plate 47 and lock spring 62
Semi-circular recesses 63 are formed on the side surfaces of the body 21a and the cover 21b, and the upper and lower recesses 63 form a circular wire insertion hole 64.

By the way, the reason why the electric wire is connected by the terminal plate 47 and the lock spring 62 is as follows. That is, since the conventional load terminal portion 23 has a soldering terminal specification, it is very difficult to perform the soldering work in the lighting fixture. Therefore, in this embodiment, since the conductor of the electric wire is simply inserted, the workability is greatly improved as compared with the soldering terminal. A release button for pressing the lock spring 62 may be provided to release the connection between the terminal plate 47 and the conductor.

By the way, as shown in FIGS. 4 (a) and 4 (b), the terminal block 21
A contact fitting 52 for short-circuiting and opening the terminal plate 47 of the load terminal portion 23 is arranged at the bottom of the body 21a of the contact metal fitting 52. Is urged by. That is, when the relay unit 31 is not attached to the terminal block 21, the contact fitting 52 is biased by the spring 53 to come into contact with the terminal plate 47 and short-circuit between both terminal plates 47. On the other hand, a boss (not shown) is integrally provided on the surface of the relay unit 31 from which the blades 36, 37 project. When the relay unit 31 is attached to the terminal block 21, the boss is inserted through the insertion hole 55 of the cover 21b of the terminal block 21, the boss presses the contact fitting 52, and the terminal board 47 is pressed.
Open the contact fitting 52 from. Therefore, when the relay unit 31 is mounted on the terminal block 21, the lighting load is remotely controlled. When the relay unit 31 is not attached, the terminal plate 47 is short-circuited by the contact fitting 52 and is directly controlled by the switch on the lighting load side. The cover 21b is attached to the body 21a by engaging an elastic claw piece 51 formed on the side surface of the cover 21b with a recess 50 formed on the inner wall surface of the body 21a.

[Advantage of the Invention] As described above, the present invention has a blade connected to the load terminal side of the terminal block protruding from the relay unit, and the load terminal is a terminal to which an electric wire from the outside of the load side is connected. A plate, a blade receiving spring that sandwiches the blade with a pair of blade receiving spring plates, and a lead wire having a large cross-sectional area of a conductor that connects the terminal plate and the blade receiving spring. By configuring the blade receiving spring with the blade receiving spring plate, the blade can be sandwiched between the pair of blade receiving spring plates to increase the contact area, and the heat dissipation area and the contact area with the blade can be increased. Further, the effect that the cross-sectional area of the conductor of the lead wire connecting the terminal plate and the blade receiving spring is increased to increase the allowable current and to reduce the overall heat generation is obtained. Further, by holding the blade by the pair of blade receiving spring plates, the holding force of the blade can be improved.

Further, by providing a lock spring for elastically contacting the conductor of the electric wire inserted from the outside to the terminal plate of the load terminal portion, the conductor of the electric wire is simply inserted to be elastically connected to the terminal plate by the lock spring. Therefore, when compared with the soldered connection terminal, the connection workability is significantly improved.

[Brief description of drawings]

1 (a) and 1 (b) are a plan view and a side view showing a connection state of an embodiment of the present invention, and FIGS. 2 (a) to (d) are a front view, a side view, a plan view and a bottom view. , Fig. 3 (a) to (c)
Is a plan view of the above terminal block, a partially cutaway front view, and a bottom view with the back plate removed, and FIGS. 4A and 4B are exploded perspective views and perspective views of main parts of another embodiment. 5 and FIG. 5 are perspective views of the above terminal body, FIG. 6 is a perspective view of the above terminal block, and FIG.
FIG. 8 is an exploded perspective view of a conventional example, FIG. 8 is a perspective view of the same as above, and FIG.
FIG. 10 is a schematic configuration diagram of a remote control system, FIG. 10 is an operation explanatory diagram of the above, FIG. 11 is a block diagram of a control terminal device of the same,
FIG. 12 is a sectional view showing an arrangement example of the same. 1 is a central control unit, 2 is a monitoring terminal device, 3 is a control terminal device, 4 is a signal line, 12 is an address setting section, 21 is a terminal block, 22
Is a terminal portion, 23 is a load terminal portion, 31 is a relay unit, 36, 3
7 is a plug blade, 47 is a terminal plate, 48 is a blade receiving spring, 48b is a blade receiving spring plate, 57 is a lead wire, and 62 is a lock spring.

Claims (2)

[Scope of utility model registration request] 1. A load control relay is driven by appropriately fetching control data transmitted by a transmission signal transmitted from a central control unit through a pair of signal lines when its own address matches. A remote control terminal,
A terminal unit, a terminal block consisting of a terminal unit for connecting the signal line and a load terminal unit for connecting a control load, and a relay unit including the load control relay and an address setting unit for setting its own address. In the detachable detachable remote control terminal, the blade connected to the load terminal side of the above terminal block is projected from the relay unit, and the load terminal is connected to the electric wire from the outside of the load side. A terminal plate, a blade receiving spring that sandwiches the blade with a pair of blade receiving spring plates, and a lead wire having a large cross-sectional area of a conductor that connects the terminal plate and the blade receiving spring. Characteristic remote control terminal. 2. The remote control terminal device according to claim 1, wherein a lock spring for elastically contacting a conductor of an electric wire inserted from the outside is provided on the terminal plate of the load terminal portion.