JPS61110926A - Electromagentic relay - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnetic relay, and particularly to a structure that facilitates the manufacture of a t-magnetic relay in which a plurality of electromagnetic coils are wound around the same bobbin.

[Conventional technology]

Fig. 5 is a perspective view showing the conventional configuration of an electromagnetic coil incorporated in a normal small electromagnetic relay, and Fig. 6 is a t-magnetic coil of an electromagnetic self-holding relay in which two electromagnetic coils are wound on the same bobbin. FIG. 1 is a perspective view (A) showing a conventional structure of the magnetic coil 1, and a perspective view (TI) showing a conventional structure of a box-shaped base that houses a magnetic coil.

In FIG. 5, 1 is an electromagnetic coil, 2 is a winding from which a winding start end 2a and a winding end end 2b are led out, 3 is a cylindrical portion 3a and a pair of flanges 3b. 3c, a coil bobbin consisting of a through hole 3d of the iron core, and a groove 3e for leading out the winding start end 2a of the winding 2; 4 and 5 are coil connection terminals; The winding start end 2a or the winding end end 2b is connected.

In the electromagnetic coil 1 configured in this way, the bobbin 3
The terminals 4 and 5 are insert molded, and the cylindrical part 3a
The beginning end 2a and the end end 2b of the winding vA2 are as follows:
Immediately after the winding is completed, the terminals 4 and 5 are soldered.

Therefore, compared to the conventional configuration in which the coil connection terminals are installed separately on an insulator, the terminal processing of the winding 2 of the am coil L is reliable and easy, and there is an advantage of downsizing the tfff relay. be.

In Fig. 6, in which the same reference numerals are used for parts common to Fig. 5,
11 is an electromagnetic coil, 12 is a first winding from which a winding start @12a and a winding end 12b are derived, and 13 is a winding start end 13a.
and the second winding from which the winding end 13b is derived, 14 is t
A box-shaped base having a recess 14a for housing the fa coil 11 and a through hole 14b for the terminal 4.5, 15 and 16 are coil connection terminals implanted in the base 14, and 17 is a contact spring (not shown) welded to it. The terminal 4.5 installed on the flange 3c is connected to the beginning end 12a of the first winding 12.
The winding end 12b is connected to the terminal 15.1 of the base body 14.
6 has a winding start end 13a and a winding end end 13 of the second winding 13.
b is connected.

In the electromagnetic coil 11 configured in this manner, the two pairs of terminals 4.5 and 15.16 are implanted in the flange 3C, that is, the terminals 4.5.15. Planting 16 is the flange 3c
In order to make the relay larger (thicker or wider), one coil terminal Is, 16 is connected to the base 14.
It is planted in

Therefore, the windings 12 and 13 wound around the bobbin 3 must be temporarily fixed, for example, to the terminals 4.5, and after the electromagnetic coil 11 is housed in the base body 14, they must be soldered.

(Problems to be Solved by the Invention) As mentioned above, in the case of a magnetic joint in which at least some of the connection terminals are implanted in the bobbin flange, up to two terminals can be implanted in the conventional 7 langes. For example, when four coil connection terminals are required for a self-holding type electromagnetic relay, two of them are implanted in the bobbin 7 flange, and the other two are implanted in the base or the like.

Therefore, for self-holding electromagnetic relays etc. in which multiple electromagnetic coils are wound on the same bobbin, the terminals of the coils cannot be treated immediately after winding, so work such as eliminating looseness after winding is required when processing the terminals. However, due to the loosening, there was a manufacturing problem in that it was difficult to automatically insert the t-magnetic coil into the base body.

[Means for solving problems]

The present invention, which aims to eliminate the above-mentioned problems, is such that the flange of the bobbin around which the IIM coil is wound is bent from the middle part along the electromagnetic coil, and the bent part has at least a The conductor terminal is characterized in that some of the four-piece terminals are implanted in a plurality of parts, and further that the conductor terminal is bent in a groove provided in advance in the middle part of the flange, and the conductor terminal is a coil connecting terminal. The electromagnetic relay is characterized in that the conductor terminal is a plurality of types of connection terminals including a coil connection terminal.

[Effect]

According to the above method, more terminals than conventional ones are inserted into the bobbin flange, the winding ends are connected to each terminal, and the structure is bent from the middle part of the flange along the coil. Therefore, even though the number of connection terminals installed on the flange increases, it does not result in an increase in size, and the connection process can be performed immediately after winding, so there is no need for post-processes such as inserting the electromagnetic coil into the base body. automation is easy to implement.

〔Example〕

Below, aVi1 according to an embodiment of the present invention will be explained using the drawings.
Explain relays.

FIG. 1 shows T! which is an embodiment of the present invention. j, a perspective view showing the t magnetic coil of the N-type self-holding relay, FIG. 2 is a perspective view showing the state of the electromagnetic coil shown in FIG. 1 before the bobbin flange is bent, and FIG. 4 is a perspective view showing a magnetic coil of an electromagnetic relay according to an embodiment. FIG. 4 is a perspective view for explaining one method of manufacturing the electromagnetic coil shown in FIG. 3.

In Figure 1, where the same symbols are used for parts common to Figure 6,
21 is an electromagnetic coil, 22 is a cylindrical portion 22a, a pair of flanges 22b, 22c, a core through hole 22d, and windings 12, 13.
To derive the beginning ends 12a and 13a of ? g22
The flange 22c is a coil bobbin equipped with a coil bobbin and has a U-shape in plan view. Terminals 4 and 15 are implanted in one of the portions along winding &i12.13, and terminals 5 and 16 are implanted in the other.

In the electromagnetic coil 21 configured in this way, before the flange 22c is bent at its middle part into a U-shape, the second
As shown in the figure, it is straight, and a pair of cut grooves 22f and 22g are provided at the bent portions, respectively.

Therefore, the winding 12 with the winding start end 12a wound around the terminal 4
is wound around the bobbin cylindrical portion 22a, and the winding end 12b is wound around the terminal 5. Then, the winding 13 whose winding start end 13a is wound around the terminal 15 is wound onto the winding vA12, and the winding end 12b is wound around the terminal 5. 13b is wound around the terminal 16.

Next, each winding end 12a, 12b, 13a, 13
B is wound around the terminals 4.5 and 15.16 by soldering, and then the flange 22c is bent from 71122f and 22g to form a U-shape.

As a result, T:1. The electromagnetic coil 21, which has approximately the same width as the magnetic coil 11, has four terminals 4.5.15.16, and the terminals 15, 16 are located on the sides of the winding 12.13.
It does not get in the way when winding wires 12° and 13.

In Figure 3, where the same symbols are used for parts common to Figure 1,
31 is a tiff coil cut out from a lead frame and includes three pairs of connection terminals; 32 is a cylindrical portion 32a and a pair of flanges 32b; 32C is a through hole 32d in the core; and the beginning end 12a of the winding 12.13. The coil bobbin is equipped with a groove 32e for leading out the coil bobbin 13a, and the flange 32c, which is U-shaped in plan view, connects the first coil connecting terminal 33
．． 34, second coil connection terminals 35, 36, and common terminals 37 and 38 are implanted.

However, the flange 32c has the terminals 33, 35, and 37 planted in one part along the winding 12.13, and the terminal 34 in the other part.
, 36 and 38 are implanted, the winding start end 12a and the terminal 33, the winding end end 12b and the terminal 34. S first end t3a and terminal 35 are soldered, winding end 13b and terminal 36 are soldered,
The common terminal 37 and a first contact spring (not shown) are welded, and the common terminal 38 and a second contact spring (not shown) are welded.

In the electromagnetic coil 31 which has been formed with tS in this way, the bobbin 32 is molded by inserting a predetermined portion of the lead frame 41 into a straight flange 32c, as shown in FIG. A pair of cut grooves 32f and 32g are provided in each of the grooves.

The lead frame 41 is connected to dotted lines H-H and L-L.
Each terminal 33 to 38 is separated, but 1 L9
t12 and t13 are wound in the same manner as in the previous embodiment before or after the cutting, and the terminal processing (soldering) is carried out by cutting off each terminal 33 to 38, and then the flange 32c is connected to the groove 32f, Starting from 32g, bend it into a U-shape.

As a result, the electromagnetic coil 3 has almost the same width as the electromagnetic coil 11.
1 includes six terminals 33 to 38, and terminals 35 to 38.
The winding vA12.13 is located on the side of the winding 12.13.
Since the terminals 33 to 38 are formed on the lead frame 41 without interfering with the winding process, productivity is extremely high.

〔Effect of the invention〕

As explained above, according to the present invention, after the electromagnetic coil is wound around the coil bobbin, at least a part of the required conductor terminal is embedded in the bent part of the bobbin flange that is bent from the middle part along the electromagnetic coil. Because of this structure, the degree of freedom in manufacturing and design related to the arrangement of the required conductor terminals is increased, and the effect of facilitating the manufacture of the electromagnetic relay itself, Tg, and the board on which the magnetic relay is mounted is extremely large. .

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an electromagnetic coil of an electromagnetic self-holding relay according to an embodiment of the present invention, FIG. 2 is a perspective view showing a state of the electromagnetic coil shown in FIG. 1 before the bobbin flange is bent, 3 is a perspective view showing an electromagnetic coil of an electromagnetic relay according to another embodiment of the present invention; FIG. 4 is a perspective view illustrating a method of manufacturing the electromagnetic coil shown in FIG. 3; FIG. Figure 6 is a perspective view showing the conventional configuration of an electromagnetic coil incorporated in a normal small electromagnetic relay, and Figure 6 is a perspective view showing the conventional configuration of an electromagnetic coil for an electromagnetic self-holding relay in which two electromagnetic coils are wound on the same bobbin. FIG. 3(a) and a perspective view (ET) showing the conventional configuration of a box-shaped base body housing the electromagnetic coil. In the figure, 1.11.21.31 is an electromagnetic coil, 3.22.32 is a coil bobbin, 3a, 3b, 22a, 22b, 32a, 32
b is a flange, 22f, 22g, 32f, 3
2g indicates a bending groove, and 4.5.15.16.33 to 38 indicate conductor terminals (connection terminals). 'rizzZ 3rd

Claims (4)

[Claims] (1) The flange of the bobbin around which the electromagnetic coil is wound is bent from the middle part along the electromagnetic coil, and at least some of the required plurality of conductor terminals are implanted in the bent part. An electromagnetic relay characterized by: (2) Claim 1, characterized in that the flange is bent at a groove provided in advance in the middle part of the flange.
Electromagnetic relays listed in section. (3) The electromagnetic relay according to claim 1, wherein the conductor terminal is a coil connection terminal. (4) The electromagnetic relay according to claim 1, wherein the conductor terminal is a plurality of types of connection terminals including a coil connection terminal.