JPH0155735B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical field to which the invention pertains) The present invention relates to an electromagnetic coil terminal connection device, and more specifically, it is used for the terminal of an electromagnetic coil for overcurrent detection of circuit breakers and the current-carrying part of a switching mechanism. The present invention relates to a device for connecting flexible conductive wires.

(Prior art and its problems) In the electromagnetic coil for overcurrent detection installed in a circuit or disconnector, one coil wire terminal is connected to a terminal on the load side, and the other coil wire terminal is connected to a terminal on the load side. It is connected via a flexible conductive wire to a movable contact block built into the opening/closing mechanism that performs opening/closing operations.

FIG. 1 shows a conventional connecting device for a flexible conductive wire at the terminal of an electromagnetic coil, where 1 is an electromagnetic coil, 2 is a yoke thereof, and the electromagnetic coil 1 is connected to a case 3 via a yoke 2. It is inserted and fixed. 4 is a flexible conductive wire whose other end (not shown) is connected to the movable contact base, and the terminal 4A of the conductive wire 4 and the coil wire terminal 1A of the electromagnetic coil 1 are fixed to each other by welding or the like, or A tube member 5 as shown in this figure was fitted onto the coil wire end 1A and the end 4A of the conductive wire 4 which were integrated, and the tube member 5 was further crushed and fixed.

However, in such conventional terminal connection devices for electromagnetic coils in circuits and disconnectors, the diameter of the coil wire in the electromagnetic coil 1 differs depending on the rating, and the conductive wire 4 is a flexible wire and cannot be placed in a fixed position. Since it is unstable to hold the tube member 5 in place, a special tool or special skill is required whether the tube member 5 is welded or crimped using the tube member 5.

Furthermore, the connection part of the coil wire terminal 1A may break during the assembly work when assembling it into the case 3 after the connection is completed, or the connection part may shift and become disconnected after the assembly.

In particular, when connecting such coil terminals, case 3
Since it is difficult to work in a narrow space after assembling the case 3 into the case 3, it is possible to complete the connections as described above before assembling it into the case 3. This requires a lot of effort since it has to be combined with a different overcurrent detection section and incorporated into the case 3 at the same time.

Furthermore, from a productivity point of view, if such connection work is done after determining the rating of the approved product, it will take time to deliver. In this way, it is necessary to prepare assembled products connected to various rated products, resulting in an increase in inventory.

(Object of the invention) In view of the above problems, the object of the invention is to
To provide an electromagnetic coil terminal connecting device that has a simple structure, can be used commonly for electromagnetic coils of different ratings, is easy to connect and assemble, and can prevent disconnection.

(Summary of the Invention) That is, the present invention provides an end of a flexible conductive wire;
In an electromagnetic coil terminal connection device that electrically connects the coil wire terminal of an electromagnetic coil that is attached to the case of a circuit breaker or disconnector, a first connection portion that connects the conductive wire terminal and a coil wire terminal are connected to each other. It has a second connection part to which the terminal is connected, and a holding part that is integrated with the first connection part and the second connection part and can be inserted and fixed into an insertion hole provided in the case of the circuit or disconnector. The present invention is characterized in that it includes a conductive connecting member, and the end of the conductive wire and the end of the coil wire can be connected via the first and second connecting portions of the connecting member.

(Embodiments of the Invention) The present invention will be described in detail below based on the drawings.

FIG. 2 shows one embodiment of the invention, where 10
is a connecting member made of a conductive material. The connecting member 10 is an insertion part 10 for inserting into the case 3.
A, flexible wire attachment part 10B to which flexible conductive wire terminal 4A is bonded and coil wire terminal 1A of electromagnetic coil 1
It has a terminal connection part 11 for attaching.

Furthermore, in this example, a U-shaped clamping groove 11A is provided in the terminal connection portion 11, and one piece of this U-shaped parallel piece is made to protrude from the other piece to form a convex portion 11.
Form B. Note that 3A is an insertion hole drilled in the case 3, and the connection member 1 is inserted into this insertion hole 3A.
Insert and install the insertion part 10A of 0.

Next, the connection and assembly sequence of the electromagnetic coil terminal connection device configured as described above will be explained with reference to FIG.
The flexible wire terminal 4A is fixed to 0B by, for example, welding. Since the movable contact base 20 is attached to the other end of the flexible conductive wire 4 as shown in FIG. 3, the movable contact base 20 in such a state, the lever 21, the main spring 22, the handle member 23, etc. are combined to form a unit 24 as an opening/closing energizing part, and when this unit 24 is fitted into the case 3 and attached, the insertion part 10A of the connection part 10 is inserted into the insertion hole 3A of the case 3.

Next, the overcurrent detection unit 27, which is constructed by combining the yoke 25, the electromagnetic coil 1, the latch mechanism 26, etc., is housed in the case 3. At this time, the coil wire terminal 1A of the electromagnetic coil 1 is shown in FIG. The clamping groove 11 of the connecting member 10 fixed to the case 3 as shown in FIG.
A and can be easily connected, for example, by soldering or the like in that state.

Furthermore, if the coil wire is thin,
The coil wire end 1A is wound around the convex portion 11B provided at the tip of the connecting member 10 and soldered to connect the two ends.

In addition, in FIG. 3, 28 is an arc extinguishing device, 29
3 is a fixed contact block, 30 is a terminal plate on the load side, and 3B is a case cover, and a description of the other assemblies will be omitted.

FIG. 4 shows another embodiment of the invention. In this example, the connection member 40 is made of a thick plate and has a simple shape. 40A is an insertion part, 40B is a flexible wire attachment part, 40C is a coil terminal clamping groove, and groove 40C is a flexible wire attachment part.
The lower piece forming the extension extends to form a convex portion 40D.

The connection and assembly sequence using the electromagnetic coil terminal connection device constructed in this manner are the same as those described with reference to FIGS. 2 and 3, and the description thereof will be omitted.

(Effects of the Invention) As explained above, according to the present invention, the first connecting part of the conductive connecting member is connected to the other end of the flexible conductive wire used in the current-carrying part of the opening/closing mechanism. A holding part provided at one end of the conductive connecting member is inserted into the insertion hole of the case to be held, and the coil wire end of the electromagnetic coil can be easily connected to the other end of the conductive connecting member. A second connection part is provided so that the end of the electromagnetic coil and the end of the flexible conductive wire are connected via the connection member, and the connection part of the flexible wire and the electromagnetic coil is held in the case via the connection member. This makes it possible to easily connect the end of the electromagnetic coil to the second connection part with the holding part of the conductive connection member inserted into the insertion hole of the case, and to connect the end of the flexible conductive wire. Not only can the work and the connection work of the electromagnetic coil terminal be carried out in a stable state, but also because these connections are securely held by the case via the connecting member, the electromagnetic coil terminal is prevented from being shaken during the work. This can prevent wire breakage.

Furthermore, the connecting part of the connecting member is designed to allow connection of both small diameter coil wires and thick diameter coil wires, so even if overcurrent detection coils have different ratings, electrical connections can be made using a common connecting member. This connection member can be connected to the flexible conductive wire end of the current-carrying part, the opening/closing current-carrying part is attached to the case, and overcurrent detection parts with different ratings can be selected and incorporated in the final process. Unlike in the past, it is no longer necessary to combine the on/off current-carrying part and the overcurrent detection part each time depending on the rating, and to attach them to the case, which takes time and effort to connect, which shortens delivery times and reduces the number of parts in stock. reduction can be achieved.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of the structure of a conventional electromagnetic coil terminal connection device, FIG. 2 is a perspective view showing an example of the structure of the electromagnetic coil terminal connection device of the present invention, and FIG. 3 is a perspective view showing an example of the structure of the electromagnetic coil terminal according to the present invention. FIG. 4 is an exploded perspective view showing a circuit breaker constructed using a connecting device, and FIG. 4 is a perspective view showing, as an example, the structure of another embodiment of the present invention. 1... Electromagnetic coil, 1A... Coil wire terminal, 2
...Yoke, 3...Case, 3A...Insertion hole, 3B
... Cover, 4 ... Flexible conductive wire, 4A ... Conductive wire terminal, 5 ... Pipe member, 10 ... Connection member, 10A ...
...insertion part, 10B...attachment part, 11...connection part, 11A...pinching part, 11B...convex part, 20...
...Movable contact base, 21...Lever, 22...Main spring,
23...Handle member, 24...Unit, 25
... Yoke, 26 ... Latch mechanism, 27 ... Unit, 28 ... Arc extinguishing device, 29 ... Fixed contact block, 3
0... Terminal board, 40... Connection member, 40A... Insertion part, 40B... Mounting part, 40C... Clamping groove, 40D... Uneven part.

Claims (1)

[Claims] 1. An electromagnetic coil terminal connection device for electrically connecting the terminal of a flexible conductive wire and the terminal of a coil wire of an electromagnetic coil attached to a case of a circuit or disconnector, A first connection part to which the ends of the conductive wire are connected, a second connection part to which the ends of the coil wire are connected, and the first connection part and the second connection part are integrally configured, and the circuit A conductive connecting member having a holding part that can be inserted into an insertion hole provided in a case of a disconnector and fixed thereto, and connecting the end of the conductive wire and the end of the coil wire to the first and second ends of the connecting member. An electromagnetic coil terminal connection device characterized in that connection is possible via a second connection portion. 2. In the electromagnetic coil terminal connection device according to claim 1, the second connection portion includes a groove into which the end of the coil wire can be inserted, and one end of the groove is connected to the other end. and a convex portion that protrudes further outward than the coil wire and around which the coil wire can be wound, and an end of the coil wire can be electrically connected to at least one of the groove and the convex portion. Electromagnetic coil terminal connection device.