JPH044381Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a terminal block used for connection processing of conductive wires.

<Prior art> A connection seat is formed on a main body frame made of an insulating material,
A terminal board is mounted on the connection seat, and a connecting bolt is screwed onto the terminal board at the position of the connection seat, so that the exposed end of the conductor is held between the terminal board and the bolt head. , a terminal block for making required connections to the conductive wires is well known.

<Problems to be solved by the invention> On the other hand, the printed circuit board to which the terminal block is mounted is provided with a light emitting diode based on a required open circuit design for checking the electrical connection state. There is. By the way, when light emitting diodes are provided as appropriate, the causal relationship between the blinking and the circuit tends to become unclear unless the circuit design is carefully designed. Since it is necessary to avoid providing multiple connections, there are drawbacks such as the fact that only the approximate connection state can be known.

The present invention is equipped with a light emitting diode on the terminal block,
The object of the present invention is to provide a terminal block that allows the state of terminal connections to be checked for each terminal block and also allows the mode of connection of light emitting diodes to be changed.

<Means for resolving the problem> The present invention provides a terminal having a structure in which a terminal plate and a connecting bolt are provided in a connecting seat, and an exposed end of a conductor is connected between the terminal plate and the bolt head. In the stand, an LED resin unit with a light emitting diode on the top and two protruding input/output connection legs connected to the light emitting diode is removably housed in a tight fit, and emits light in the housed state. A storage chamber in which the bright part of the diode projects upward is formed in the main body frame at a position beside the connection seat, and a connection leg of the terminal plate is made to project downward from the main body frame, and The connection end formed on the terminal board is exposed to the storage chamber side, and the LED resin unit where the connection end and one connection foot are connected, and the LED resin unit where the connection end and one connection foot are not connected are connected. The device is characterized in that it can be selectively housed to selectively connect or disconnect the light emitting diode and the terminal board.

<Function> The LED resin unit stored in the storage chamber has the following functions:
Two input/output connection legs are formed, and if one of the connection legs is connected to the connection end exposed on the storage chamber side of the terminal board in the attached state, the light will emit light. The diode and the terminal block are connected in series, and the conductive wire between the terminal plate and the bolt head is electrically branched to the connection leg side of the terminal plate and the light emitting diode side.

In addition, by configuring the input/output connection foot of the LED resin unit not to be connected to the connection end of the terminal board, the series connection between the light emitting diode and the terminal board is broken, and two connections are made. By arbitrarily connecting the light emitting diodes using the foot rods, it is possible to arbitrarily connect the light emitting diodes and to associate the conducting wires with the light emitting diodes in different forms.

Therefore, in such a configuration, by arranging the light emitting diode near the connection seat, the relationship between them can be made clear, and two types of LED resin units can be prepared and applied selectively to the storage room. This allows the connection of the light emitting diodes to be selected from two modes.

<Example> An example of the present invention will be described with reference to FIGS. 1 to 3.

Reference numeral 1 denotes a terminal block, which is made of an insulating resin material such as polycarbonate, and configured as a collective terminal block in which a plurality of connection seats 2 are arranged in a row. Each connection seat 2 is partitioned by a partition wall 3.

The connection seat 2 is constituted by the upper plane of the thick portion 4 between the partition walls 3, 3, and a hollow portion below the center of the connection seat 4 in the thick portion 4 serves as a screw accommodating portion 5. Further, vertical insertion holes 6 and 7 are formed in the thick wall portion 4 on both sides of the connection seat 2.

A U-shaped terminal plate 8 is placed on the connection seat 2 in an inverted manner, and has a rod-like connecting foot 9 formed on the left end in FIGS. 2 and 3, and a short rod-shaped terminal plate 8 formed on the right end The connecting ends 10 are inserted into the through holes 6 and 7, respectively. A screw tube 11 is formed in the horizontal mounting portion of the terminal plate 8 at a position that coincides with the upper part of the screw accommodating portion 5,
A connecting bolt 13 is screwed onto the threaded cylinder 11 from above, and its threaded rod portion 14 is accommodated in the screw housing portion 5 . Further, a crimp piece 16 is loosely fitted into the base of the threaded rod portion 14 of the connecting bolt 13, and is linked to the bolt head 15 of the connecting bolt 13 as the connecting bolt 13 screws forward. Then, it is pressed against the upper surface side of the connection seat 2. and the screw rod part 1
4 has a crimp terminal 41 fixed to the exposed end of the conductor 40.
is fitted onto the outside and held between the crimp piece 16 and the connection seat 2.

A cylindrical frame 20 is provided adjacent to the connection seat 2 and connected to the thick wall portion 4 . The cylindrical frame 20 extends above the position of the connection seat 2 and has a square plane. Inside thereof, a storage chamber 23 is formed by vertically connecting a circular mouth hole 21 and a mounting hole 22. A cutout 25 is formed in the lower inner wall of the storage chamber 23, through which the connection end 10 of the terminal plate 8 is exposed.
The storage chamber 23 includes LED resin units 30a,
30b is stored.

The LED resin units 30a, 30b are provided with a light emitting diode 31 having the same diameter as the opening 21 in the upper part, and one of the rod-shaped input/output connection legs 33a, 33b, 34 connected to the light emitting diode 31. A resistor 35 is connected to the connecting leg 34 of the connecting leg 34, and a resin mold 36 is molded into the same shape as the inner diameter of the storage chamber 23, excluding the ends of the connecting leg 33a, 33b, and 34.
It is made by applying. Then, it is housed in the storage chamber 23 from the bottom, and the light emitting diode 31 is inserted into the mouth hole 21, so that its hemispherical luminescent part 37 projects outward from the top.

Although the LED resin units 30a and 30b have a built-in resistor 35 connected to the connecting leg 34, the resistor 35 is provided separately and the LED
It can be removed from the resin units 30a, 30b.

One type of LED resin unit 30a with this basic configuration has a connecting leg 33a as shown in FIG.
The resin mold 36 is bent diagonally in advance.
It is formed so as to protrude diagonally downward from the inner surface of the.
Then, in the state accommodated in the storage chamber 23, the inclined end of the connecting leg 33a is inserted into the connecting end 10 through the notch 25.
I'm trying to get in touch with. In this case, the contact is held in pressure contact with the connecting end 10 by the spring elasticity of the connecting leg 33a itself.

In the terminal block 1 to which this LED resin unit 30a is applied, the connection foot 9 and the connection foot 34 of the LED resin unit 30a are inserted into the through hole of the printed circuit board 42 to form a part of the required circuit. Then, the connecting leg 9 and the light emitting diode 31
is in parallel with the conducting wire 40. and,
As a result, for example, as shown in FIG. 44 are connected in parallel to the power supply side 45 to form a circuit. In this case, an accident such as a poor connection with the printed circuit board 42 can be detected by the light emitting diode 31.

In other LED resin units 30b, the third
As shown in the figure, the end of the connecting leg 33b protrudes from the lower end in the same way as the connecting leg 34. In this case, the terminal block 1 is connected to the printed circuit board 42.
The terminals connected to the connecting foot lever 9, the connecting foot lever 33b,
The connecting foot lever 34 has a three-terminal structure. In such a configuration, since the light emitting diode 31 has an independent configuration, it is possible to appropriately select its connection form.

In addition, a transparent resin cover 50 is attached to the upper part of the terminal block 1 having the above structure. The resin cover 50 has a locking hook 51 formed on its side surface hooked onto a locking protrusion 52 formed on the side surface of the terminal block 1.
The interlocking protrusion 53 at the center comes into elastic contact with a contact surface formed on the partition wall 3, and is held on the terminal block 1. A mounting groove 54 into which a name plate 55 is fitted is formed on the back surface of the resin cover 50 at a portion located above the connection seat 2.

The resin cover 50 protects the terminal block 1 from dust and the like, and the name plate 55 allows the connection relationship to be clearly indicated.

<Effects of the invention> As clarified by the above explanation, the present invention forms the connection seat 2 on the terminal block 1, and
Beside it, there are LED resin units 30a, 30b.
Select one of the LED resin units 30a, 30b and place the LED resin unit 30a, 30b against the terminal board 8.
The light emitting diode 31 is connected in a conductive or non-conductive manner, and in either case, the connection state on the conductor 40 side can be detected by the light emitting diode 31. Since the light emitting diode 31 is placed in close contact with the light emitting diode 31, the meaning of the display of the light emitting diode 31 can be clearly understood, and since the light emitting diode 31 is arranged for each terminal block 1, it is possible to precisely detect the electrical connection state. In addition, since two types of connection of the light emitting diode 31 can be selected by selecting the LED resin units 30a and 30b, there are excellent effects such as the ability to detect a state that matches the state of the circuit.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the terminal block 1 of the present invention, and Fig. 2 is a plan view of the terminal block 1 of the present invention.
A longitudinal side view to which the LED resin unit 30a is applied;
FIG. 3 is a longitudinal sectional side view to which the LED resin unit 30b is applied, and FIG. 4 is a circuit diagram showing an example of a circuit constituted by the terminal block 1 to which the LED resin unit 30a is applied. 1...Terminal block, 2...Connection seat, 8...Terminal board,
9... Connection foot lever, 10... Connection end, 13... Connection bolt, 20... Cylindrical frame, 23... Storage chamber, 3
0a, 30b...LED resin unit, 31...
Light emitting diode, 33a, 33b... connection leg,
50...Resin cover.

Claims (1)

[Claim for Utility Model Registration] A connection seat is formed on a main body frame made of an insulating material, a terminal board is installed on the connection seat, and a connection bolt is screwed onto the terminal board. In the terminal block that connects the exposed end of the conductor between A storage chamber is formed in the main body frame at a position adjacent to the connection seat, and the storage chamber is housed in a tight-fitting manner so that the bright part of the light emitting diode projects upward in the stored state, and the connection leg of the terminal board The rod is made to protrude downward from the main body frame, and the connecting end formed on the terminal board is exposed to the storage chamber side, and the connecting end and one connecting leg are connected to an LED resin unit, and the connecting end and A terminal block characterized in that one connection leg selectively accommodates an unconnected LED resin unit, thereby selectively enabling connection or non-connection between a light emitting diode and a terminal board.