JP2626092B2 - Electromagnetic coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to an electromagnetic coil mainly used for an electromagnetic relay.

[Prior art]

In recent years, there has been an increasing demand for electromagnetic relays having an electronic circuit unit such as a surge absorbing device or an operation display device (for example, for an electromagnetic relay with an operation display device,
See JP-A-62-64014). These units are composed of electronic components such as light emitting diodes and capacitors, and are connected in parallel or series to the terminals of the electromagnetic coil to perform their functions. On the other hand, there is a standard type that does not have an electronic circuit unit in the electromagnetic coil.However, in the past, this standard type and a type that has an electronic circuit unit, especially those that are connected in series, cannot be shared, I was making electromagnetic coils. One example is shown in FIGS. 2 (A) to (C) and FIG. 3 (A) to
This will be described below with reference to (C). Here, FIG.
3 (C) is a side view of the electromagnetic coil, and FIGS. 3 (A) to 3 (C) are connection diagrams respectively corresponding to FIGS. 2 (A) to 2 (C). 2 (A) to 2 (C), 1 is a coil frame, 1a is its collar, 2 is a winding applied to the coil frame, 2a is a lead wire at the beginning of winding of the winding 2, and 2b is the same winding end. The lead wires 3 and 4 are coil terminals embedded in the collar 1a by molding. FIG. 2 (A) shows a standard type electromagnetic coil without the electronic circuit unit. The lead wire 2a at the beginning of winding is connected to the coil terminal 3, and the lead wire 2b at the end of winding is connected to the coil terminal 4, respectively. ing. The circuit configuration is as shown in FIG. Next, FIG. 2 (B) shows that a CR element 5 or a diode 6 for surge absorption is connected between the coil terminals 3 and 4, and these elements 5 and 6 are circuitally shown in FIG. 3 (B). As shown in FIG. FIG. 2C shows a display device 10 in which the light emitting diode 7, the resistor 8, and the protection diode 9 are connected in parallel with each other.
Are connected in series to the winding 2 as shown in FIG. 3 (C). In this case, one terminal 10 a of the display device 10 is directly connected to the lead wire 2 b at the end of winding of the winding 2, and the other terminal 10 b is connected to the coil terminal 4. The lead wire 2a at the beginning of winding is connected to the coil terminal 3.
Note that such a display device 10 basically performs the same function even when connected in parallel to the winding 2, but may cause an erroneous display in the case of parallel connection when a failure such as coil disconnection occurs in rare cases. Therefore, the series connection shown in the figure is performed.

[Problems to be solved by the invention]

Now, in the conventional electromagnetic coil, when the electronic circuit unit is connected in parallel to the winding 2, the standard type shown in FIG. 2A can be used as it is, as can be seen from FIG. 2B. However, in the case of serial connection, the lead wires 2a and 2b at the beginning or end of winding are directly connected to one terminal 10a of the electronic circuit unit as shown in FIG. The wires 2a and 2b need to be kept in stock without being connected. That is, conventionally, the standard type electromagnetic coil cannot be shared with the one with the electronic circuit unit, and there is a problem in that the electromagnetic coils are divided into two lines, and parts management is troublesome. SUMMARY OF THE INVENTION It is an object of the present invention to provide an electromagnetic coil which can be used with all types of standard type and electronic circuit units with parallel connection and series connection with one kind of electromagnetic coil.

[Means for Solving the Problems]

In order to achieve the above object, according to the present invention, a winding is applied to a coil frame, and a lead wire at the beginning and end of winding of the winding is connected to a coil terminal implanted in a flange of the coil frame. An electromagnetic coil in which at least three coil terminals are provided, one of the leading and trailing lead wires is connected to one of the coil terminals, and the other lead terminal is connected to the other coil terminal in a bridging manner. It is.

[Action]

In the case of parallel connection, an electronic circuit unit is connected between the one coil terminal and any of the remaining coil terminals. In the case of the parallel connection type and the standard type, the one coil terminal and one of the remaining coil terminals may be used as input terminals. In the case of a series connection, a lead wire bridging between coil terminals is cut, and an electronic circuit unit is connected therebetween. Then, the coil terminal on the side connected to the lead wire may be used as a relay terminal, and the coil terminal on the other side and the one coil terminal may be used as input terminals.

【Example】

1 (A) to 1 (C) show an embodiment of the present invention. In the drawing, a third coil terminal 11 is newly provided on the collar 1a of the coil frame 1 in addition to the coil terminals 3 and 4 in FIG. And the lead wire at the beginning of winding of winding 2
2a is connected to the coil terminal 3 by soldering or the like, and the lead wire 2b at the end of winding is similarly connected to the coil terminal 11, and further connected to the coil terminal 4 in a bridging manner.
Therefore, the coil terminals 4 and 11 are electrically at the same potential,
In the case of use as the standard type shown in Fig.
One of the terminals 4 and 11 and the coil terminal 3 may be used as input terminals. FIG. 1 (B) shows an example in which a CR element 5 or a diode 6 for surge absorption is connected in parallel to the winding 2, and a lead wire at the beginning of winding in the electromagnetic coil of FIG. 1 (A). The CR element 5 or the diode 6 is connected between the coil terminal 3 to which 2a is connected and the coil terminal 11 to which the lead wire 2b at the end of winding is connected. Therefore, coil terminal 4,
If any one of the terminals 11 and the coil terminal 3 are used as input terminals, a circuit configuration of parallel connection as shown in FIG. 3B can be obtained. The elements 5 and 6 may be connected between the coil terminals 3 and 4. FIG. 1 (C) shows an example in which a display device 10 comprising a light emitting diode 7, a resistor 8 and a protection diode 9 is connected in series to the winding 2, and a connection between the coil terminals 4 and 11 is shown. The lead wire 2b for bridging is cut, and the display device 10 is connected between them. Therefore, if the coil terminals 3 and 4 are used as input terminals, the circuit configuration of the series connection shown in FIG. 3C can be obtained. In this case, the coil terminal 11 is a lead wire
It serves as a relay terminal for connecting 2b to one terminal 10a of the display device 10. As described above, according to the illustrated configuration, the electromagnetic coil with the parallel connection of the surge absorbing elements 5 or 6 and the series connection of the display device 10 can be manufactured by diverting the standard type electromagnetic coil as it is. Although the illustrated embodiment shows the case where the number of coil terminals is three, an electromagnetic coil having both parallel connection and series connection of elements can be manufactured by using four or more coil terminals.

【The invention's effect】

According to the present invention, if a standard type electromagnetic coil is stocked, it can be easily manufactured with the parallel connection and the serial connection of the electronic circuit unit by diverting it. Accordingly, the parts management cost is reduced by half, and the operation display device and the like can be mounted in the final step of assembly, so that the assembly line can be shared with the standard type.

[Brief description of the drawings]

FIG. 1 is a side view of an electromagnetic coil according to an embodiment of the present invention. FIG. 1 (A) shows a case where a standard type is used, and FIG. 1 (B) shows a case where an electronic circuit unit is connected in parallel. 1
FIG. 4C shows the case where the connection is made in series. FIG. 2 is a side view of a conventional example. FIG. 2 (A) shows a standard type, and FIG. 2 (B) shows a case where electronic circuit units are connected in parallel.
FIG. 2 (C) shows a case where they are similarly connected in series. 3 (A) to 3 (C) are FIGS. 2 (A) to 2 (C), respectively.
FIG. DESCRIPTION OF SYMBOLS 1 ... Coil frame, 1a ... Collar, 2 ... Winding, 2a ... Lead wire at the beginning of winding, 2b ... Feeding wire at the end of winding, 3, 4, 11 ... Coil terminal.

Claims (1)

(57) [Claims] An electromagnetic coil in which a winding is applied to a coil frame, and lead wires at the beginning and end of winding of the winding are connected to a coil terminal implanted in a flange of the coil frame. An electromagnetic coil, wherein at least three coils are provided, one of the lead wires at the beginning and end of the winding is connected to one of the coil terminals, and the other is connected to the other coil terminal in a bridging manner.