JP2000251970A - Terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an excellent and small-sized terminal device surely showing completion of wire connection. SOLUTION: This terminal device is equipped with a load terminal of rapid joint structure including contacts S1, S2, a contact S1, a power supply terminal (DT), a wire insertion hole 1c, a body 1, a terminal board 4, and a lock spring 5, This terminal device is further provided with an internal switch 10. 11 synchronizing with the state of connection of the terminal board 4 to a conductor 3a of an electric wire 3 inserted through the wire insertion hole 1c, and a lamp L series-connected to the internal switch 10, 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal device for connecting a conductor such as an electric wire to a wiring device or a breaker.

[0002]

2. Description of the Related Art A conventional terminal device is shown in FIGS.
In this terminal device, as shown in FIG. 7 (B), when the conductor portion 3a, which is obtained by removing the coating of the wire 3 with the insulating coating and exposed from the wire insertion hole 1C, is inserted, the conductor 3a is arranged to oppose the terminal plate 4. The conductor 3a of the electric wire 3 is pressed against the terminal plate 4 by the contact pressure piece 5b of the lock spring 5 provided, and the conductor 3a and the terminal plate 4 are electrically connected.

At this time, since the tip of the conductor 3a presses the display member 6, the display member 6 pivotally supported by the body 1 rotates clockwise about the pivot point 6a. Then, the display section 6b provided with coloring or the like provided on the display member 6 can be visually recognized from the display window 1f provided in the housing 1.
This notifies the user that the terminal plate 4 and the conductor 3a of the electric wire 3 are electrically connected.

[0004]

However, the above terminal device has the following problems (1) and (2). (1) Since the completion of connection is confirmed by visually observing the display unit, when construction is performed in a dark environment such as indoor electrical work, the display unit is very difficult to see, so construction efficiency is reduced. (2) As the wire conductor presses the display member, the display member is rigid, and the display portion moves continuously. Therefore, it is difficult for the user to know at which stage the connection of the wire has been completed. give.

[0005] The present invention has been made in view of the above problems, and an object of the present invention is to provide a small terminal device that can surely inform a user of completion of wire connection.

[0006]

According to a first aspect of the present invention, there is provided a speed controller including a contact, a contact portion, a power supply terminal portion, an electric wire insertion hole, a body, a terminal plate, and a locking spring. In a terminal device having a load terminal portion having a connection structure, an internal switch synchronized with a connection state between the conductor portion of the electric wire inserted from the electric wire insertion hole and the terminal plate and a lamp connected in series with the internal switch are provided. It is assumed that:

According to a second aspect of the present invention, a power supply terminal of the internal switch and a power supply terminal of the main circuit are disconnected when the main circuit of the terminal device is connected. It is characterized by the following.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 is a top view and a side view of the terminal device. 2 is a top view and a side view of the internal switch block, FIGS. 3 and 4 are operation explanatory diagrams, and FIG. 5 is an operation explanatory circuit diagram. FIG. 6 is a top view and a side view in a state where the terminal device is incorporated in the circuit breaker.

The terminal device according to the present invention comprises four parts: an electric wire connecting part, an electric wire unlocking part, a lamp circuit part, and a container including these.

The electric wire connection part includes a terminal plate 4 and a locking spring 5.
And an electric wire insertion hole 1c. The lock spring 5
It has a contact pressure piece 5a and a lock piece 5b. The terminal plate 4
It is arranged at a position opposing the lock spring 5. The wire insertion hole 1c is a part of the body 1 arranged so as to be adjacent to the terminal plate 4.

The electric wire unlocking section comprises an unlocking button 8.
The unlocking button 8 is slidable along the guide portion 12 of the body 1 and is arranged so as to be able to press the locking piece 5b of the locking spring 5.

The lamp circuit section includes a substrate P, a lamp L, a resistor R, a power supply contact piece 9, a switch fixed contact piece 10, a switch movable contact piece 11, and a pressing member 7 shown in FIG.
And The substrate P is made of glass epoxy resin, and has a predetermined circuit pattern PA formed on the surface. The lamp L is a neon lamp. Although the resistor R is provided for adjusting the supplied current to a predetermined current, a chip resistor is used here to reduce the space. The power contact piece 9, the switch fixed contact piece 10, and the switch movable contact piece 11 are leaf springs made of a copper material. The power contact piece 9 is arranged such that when the main circuit is not connected, it comes into contact with the movable contact S2 that communicates with the main circuit power terminal portion to obtain electrical connection. The pressing member 7 is made of an insulating molded member, and is configured to slide as the distal end of the electric wire conductor 3a inserted from the electric wire insertion hole 1c presses the lower end. Movable contact piece 1
1 is in contact with the upper end of the pressing member 7, and the wire conductor 3
a, when the terminal plate 4 is connected, the switch fixed contact piece 1
It is arranged so as to contact with zero.

Next, the operation will be described. As shown in FIG. 3A, when the electric wire 3 with the exposed conductor portion 3a at the tip is inserted through the electric wire insertion hole 1c, the contact pressure piece 5a of the locking spring 5 presses the conductor portion 3a of the electric wire 3 against the terminal plate 4. Thus, the terminal plate 4 and the conductor 3a of the electric wire 3 are electrically connected. At this time, the locking piece 5b locks the conductor 3a of the electric wire 3 to prevent the electric wire from coming off due to vibration, impact, or the like without fixing it with screws or the like.

Then, when the wire is inserted further deeply,
The pressing member 7 is pressed by the tip of the conductor portion 3a, slides in the wire insertion direction, and the switch movable contact piece 11 bends. Further, a predetermined amount of electric wire is inserted, and the electric wire conductor portion 3a and the terminal plate 4 are in a connected state. As shown in FIG.
And is electrically connected. When inserting the wire,
Since the main circuit is not connected, the power supply contact piece 9 is electrically connected to the power supply terminal. Therefore, the circuit state shown in FIG. 5B is established, and the lamp L is turned on.

A description will be given of a case where the main circuit is in a connected state with reference to FIG. After confirming the completion of the wire connection by turning on the lamp L as described above, the main circuit is connected,
That is, when the switch movable contact piece 11 is brought into contact with the contact, the power supply contact piece 9 is disconnected from the movable contact S2, that is, the power supply contact piece 9 is insulated from the power supply. Therefore, the circuit state shown in FIG. 5C is established, and the lamp L is turned off.

An operation of pulling out the inserted electric wire 3 from the terminal device will be described with reference to FIG. As described above, the locking piece 5b of the locking spring 5 locks the conductor 3a of the inserted wire 3 so that it cannot be easily removed by simply pulling it out.

Therefore, in this terminal device, an unlocking button 8 for releasing the locking piece 5b of the locking spring 5 from locking the conductor portion 3a.
Is provided. When the unlocking button 8 is slid along the guide portion 12 provided on the body 1, the unlocking portion of the unlocking button 8 pushes down the locking piece 5b of the locking spring 5, and the locking piece 5b The portion 3a is no longer locked. During this time, if the electric wire 3 is pulled out, it can be easily removed from the terminal device.

After the wire is pulled out, the pressing member 7 loses the pressing force of the wire, and is urged in the direction of the wire insertion hole 1c by the elastic force of the movable contact piece 11 to return to the position shown in FIG. Become.

As a result, the following (1) to (3) can be performed. (1) When the wire conductor and the terminal plate are connected, the internal switch is connected to the power supply terminal, and the lamp connected in series with the internal switch is turned on. It can be recognized, which leads to an improvement in efficiency at the time of construction in a dark environment. Further, it is possible to make a binary determination of a connected state or a non-connected state (there is no ambiguous state), so that anxiety is eliminated. (2) The internal switch is provided with a movable contactor, that is, a connection changeover switch for connection to the power supply terminal. When the main circuit is connected, the power supply terminal of the internal switch is not connected to the power supply terminal of the main circuit. Therefore, if the terminal device is connected to the main circuit after confirming the connection completion by lighting the lamp, the power terminal of the internal switch and the power terminal of the main circuit are disconnected, the lamp is turned off, and power consumption is reduced. Can save money. (3) Since the circuit of the internal switch and the lamp is formed on the substrate and is divided into blocks, the assemblability is improved.

[0020]

According to the first aspect of the present invention, the internal switch synchronized with the connection state between the wire conductor and the terminal plate and the lamp connected in series with the internal switch are provided.
When the terminal plate and the wire conductor are connected, the internal switch is also connected and the lamp is turned on, so that the user can recognize the completion of the connection of the wire conductor to the terminal plate with light, and in a dark environment. Can improve efficiency at the time of construction at the same time, and judge the binary value of the connected state or the disconnected state (no ambiguous state)
This has the effect of eliminating anxiety.

According to the second aspect of the present invention, the first aspect is provided.
In addition to the effects of the invention described, furthermore, when the main circuit of the terminal device is in the connected state, the power supply terminal portion of the internal switch and the power supply terminal portion of the main circuit are provided with the connection switching portion in the disconnected state, so that After confirming the connection completion with the lighting of the lamp, when the terminal device is connected to the main circuit, the power terminal of the internal switch and the power terminal of the main circuit are disconnected,
Since the lamp is turned off, the power consumption can be saved.

[Brief description of the drawings]

FIG. 1A shows a terminal device according to an embodiment of the present invention.
It is a top view, (B) side view.

FIG. 2A shows an internal switch block of the terminal device.
It is a top view, (B) side view.

FIG. 3 is an operation explanatory view of the terminal device (a) before insertion of an electric wire, and (b) insertion of an electric wire and completion of connection.

FIG. 4 is an operation explanatory diagram of the terminal device in a state where the main circuit is connected in a state where the electric wire connection is completed, and in a state where the electric wire is unlocked.

FIG. 5 is a circuit explanatory diagram of the terminal device, in which (A) main circuit non-connection and electric wire non-connection, (B) main circuit non-connection and electric wire connection,
(C) It is a figure showing main circuit connection and electric wire connection.

6A is a top view and FIG. 6B is a side view showing a state where the terminal device is incorporated in the circuit breaker.

7A is a top view and FIG. 7B is a side view of a conventional terminal device.

8A is a top view and FIG. 8B is a side view showing a state in which a conventional terminal device is incorporated in a circuit breaker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 1c Electric wire insertion hole 1f Display window 2 Handle 3 Electric wire 3a Electric wire conductor 4 Terminal plate 5 Lock spring 5a Contact piece 5b Lock piece 6 Display member 6a Pivot point 6b Display part 7 Pressing member 8 Unlock button 9 Power contact piece 10 Switch fixed contact piece 11 Switch movable contact piece 12 Guide part L Lamp P board PA Circuit pattern R Resistance S1 Main circuit fixed contact S2 Main circuit movable contact S2 Main circuit movable contact DT Power terminal

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tomoyuki Sawada 1048 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Inventor Toshihiro Oido 1048 Kadoma Kadoma, Kadoma City, Osaka Matsushita Electric Works, Ltd. (72) Inventor Yasuhiro Sano 1048 Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Works Co., Ltd. (72) Inventor Takashi Inazuma 1048 Kadoma, Kazuma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Works Co., Ltd. 1048 Kadoma, Kadoma, Kazuma, Osaka Prefecture F-term in Matsushita Electric Works Co., Ltd. (reference) 2G014 AA01 AB43 AB44 AC08 AC15 2G035 AA23 AB07 AC13 AD10 AD38 AD44 5G030 EA00 XX20

Claims (2)

[Claims] 1. A terminal device having a quick-connecting load terminal portion including a contact, a contact portion, a power terminal portion, an electric wire insertion hole, a body, a terminal plate, and a locking spring. 3. The terminal device according to claim 1, further comprising an internal switch synchronized with a connection state between the conductor portion of the electric wire inserted through the electric wire insertion hole and the terminal plate, and a lamp connected in series with the internal switch. 2. The internal switch further includes a connection switching unit that disconnects the power supply terminal of the internal switch and the power supply terminal of the main circuit when the main circuit of the terminal device is connected. Item 2. The terminal device according to Item 1.