JP2896086B2 - Electromagnetic coil terminal mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic coil terminal mounting structure, and more particularly to a structure of a coil terminal mounted on a coil spool for mounting an electromagnetic coil.

[0002]

2. Description of the Related Art Conventionally, for example, an electromagnetic coil housed in an electromagnetic relay has a conductive wire wound around a core 11 of a coil spool 10 made of synthetic resin as shown in FIG. It is constituted by inserting an iron core into a through hole 11a formed inside. Coil spool 10
The end frame 12 has a mounting surface 12a for mounting the coil terminal 13, and a flat hole 12b formed to have an opening in the mounting surface 12a.

The coil terminal 13 is formed by bending a single plate material, and includes a mounting base 13a, and a mounting plate 13b formed by being bent at a right angle above the mounting base 13a. , A coil connecting portion 13c formed on the opposite side of the mounting base 13a, and a terminal piece 13d protruding downward from the lower center of the mounting base 13a. The coil terminal 13 is configured such that the mounting plate portion 13b is
0, and is fixed in a state where the mounting base 13a is in contact with the mounting surface 12a of the coil spool 10. In addition, the coil terminal 14 in the figure is the coil terminal 1 described above.
3, which is attached to the opposite side of the coil spool 10.

[0004]

However, in the above-described conventional terminal structure of the electromagnetic coil, the shape of the coil terminals 13 and 14 is complicated in order to ensure the positioning of the terminals, and the coil terminals 13 and 14 are complicated. Since the parts 14 cannot have the same shape, there is a problem that the cost of parts and the number of parts cannot be reduced. Also, in order to share the coil terminals between different models, the asymmetric shape like the coil terminals 13 and 14 has been a great hindrance. Accordingly, the present invention is to solve the above problems, and an object of the present invention is to realize a novel terminal mounting structure capable of forming a common coil terminal in the same model and sharing the coil terminal between different models. It is in.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a coil spool for mounting an electromagnetic coil, and a pair of coil terminals mounted and fixed to the coil spool and conductively connected to the electromagnetic coil. Is provided with a rod-shaped part press-fitted into the coil spool, a coil connection part for connecting a lead wire of the electromagnetic coil, and a terminal piece led out to the outside, and the rod-shaped part is press-fitted into the coil spool. In the terminal mounting structure for an electromagnetic coil having a pair of mounting holes, the rod terminal and the coil connection part are formed in the coil terminal in a symmetrical shape about the axis of the terminal piece part. Both the rod portion and the coil connection portion are configured to be mountable in the mounting hole, and the coil spool is provided with the coil terminal centered on the axial direction of the mounting hole. Characterized in that a guide portion for regulating the movement.

In this case, it is preferable that the coil terminal is formed in a substantially T-shape.

It is preferable that the rod-shaped portion is a prismatic portion having a square cross section, and the mounting hole is a round hole having a circular cross section.

[0008]

According to the first aspect, the rod-shaped portion, the coil connection portion, and the terminal piece portion are provided on the coil terminal, and the mounting hole and the guide portion are provided on the coil spool, so that the rod-shaped portion is press-fitted into the mounting hole. In addition, the rotation of the coil terminal about the axis in the mounting hole can be restricted by the guide portion. Since the rod-shaped part of the coil terminal and the coil connection part are configured symmetrically with respect to the axis of the terminal piece part, the coil terminal is configured to be mounted in any of the pair of mounting holes of the coil spool. In addition, the same coil terminal can be used for any of the pair of coil terminals, and parts can be shared between products of the same type and between different types of products, thereby reducing product manufacturing costs. .

[0009]

According to the third aspect of the present invention, the prismatic portion having a rectangular cross section and the round hole having a circular cross section are fitted by press-fitting. It can be raised, and the rotation of the rod portion or the mounting hole around the axis can be suppressed.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an electromagnetic coil terminal mounting structure according to the present invention. In this embodiment, as shown in FIG. 1, a coil terminal 30 is mounted on a coil spool 20 composed of a core 21 and an end frame 22. 2, 3, and 4 are a front view, a side view, and a bottom view showing the entire configuration of the coil spool 20. The coil spool 20 has a concave portion 23 at a corner of the end frame portion 22. A mounting round hole 24 is formed in one side surface of the concave portion 23, and a guide gap is formed from a position immediately below the opening of the mounting round hole 24 in parallel with the axis of the mounting round hole 24. , A pair of guide frame portions 25, 25 are formed.

On the other hand, the coil terminal 30 is
1 and 32 and a terminal piece 33 are formed in a substantially T-shape. Each of the prism portions 31 and 32 has a square wire pin shape having a square cross section. As shown in FIG. 5, the prism-shaped portions 31 and 32 are normally configured symmetrically with respect to the axis of the terminal piece portion 33. One of the prism-shaped portions 31 and 32 is a portion to be attached to the coil spool 20, and the other is an electromagnetic member. It can be used as a coil connecting part for connecting the end of the lead wire 26 of the coil. In the case shown in the figure, the prism 31 is pressed into the mounting round hole 24,
The base of the terminal piece 33 is fixed in a state of being fitted between the guide frames 25. The prismatic portion 32 of the coil terminal 30 attached in this manner has a coil lead wire 2.
6 is wound and brazed with solder or the like.

According to this embodiment, the terminal piece 33 is automatically guided and fixed between the guide frame portions 25 simply by press-fitting the prismatic portion 31 of the coil terminal 30 into the mounting round hole 24. Therefore, it can be mounted very easily. Also, since the prismatic portion 31 is press-fitted into the mounting round hole 24 and the base of the terminal piece 33 is regulated by the guide frame 25, the coil terminal piece 30 is mounted on the coil spool 20. Fixing can be performed reliably.

The coil terminal 30 of the present embodiment has a terminal piece 3
Since the prism-shaped portions 31 and 32 are formed symmetrically with respect to the axis 3 of FIG. 3, for example, the prism-shaped portion 32 is used as a mounting portion for the coil spool 20 instead of the prism-shaped portion 31, and the recess 23 'shown in FIG. It can also be attached to In addition, since the coil terminals 30 are formed symmetrically in the front and rear directions, the prismatic portions 32 can be respectively mounted in the mounting round holes 24 of the concave portions 23. Further, since the prism-shaped portions 31 and 32 have the shape of square wire pins, they can be easily applied to various coil spools.

In this embodiment, the coil terminals are formed in a substantially T-shape, and either of the prism-shaped portions 31 and 32 may be press-fitted into the coil spool. Not limited to this, one side may have a prism-shaped portion (for example, 3
1) may be formed, and a coil connection portion (for example, 32) having a circular cross section may be formed on the other side. Also in this case, since the coil terminals are formed symmetrically in the front and rear, the concave portions 23 and 23 '
It is possible to correspond to both.

In this embodiment, the guide frame portion 25 is provided below the axis of the mounting round hole 24. However, the guide frame portion 25 is provided with a protruding portion parallel to the terminal piece portion at the upper end portion. It can also be provided above the axis of the hole 24. The guide frame does not necessarily have to form a gap through which the terminal piece 33 is inserted. If the guide frame can prevent displacement of the coil terminal piece 30 in the rotation direction, for example, the prism-shaped portion 3
It may be constituted by an abutting surface which abuts on a surface constituting the surface of the prism between 1 and 32.

[0017]

As described above, according to the present invention, the rod-shaped portion of the coil terminal and the coil connection portion are formed symmetrically with respect to the axis of the terminal piece, and the coil terminal is formed by a pair of coil spools. The same coil terminal can be used for any of a pair of coil terminals because it is configured so that it can be installed in any of the mounting holes, and parts can be shared within the same product and between different products And the manufacturing cost of the product can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part showing a structure of an embodiment according to the present invention.

FIG. 2 is a front view showing a structure of a coil spool in the embodiment.

FIG. 3 is a rear view showing the structure of the coil spool in the embodiment.

FIG. 4 is a side view showing the structure of the coil spool in the embodiment.

FIG. 5 is an enlarged front view showing, in an enlarged manner, a mounting portion of the coil spool and the coil terminal in the embodiment.

FIG. 6 is a perspective view showing a conventional structure for mounting a coil spool and a coil terminal.

[Explanation of symbols]

 Reference Signs List 20 Coil spool 22 End frame part 23, 23 'concave part 24 Round hole for mounting 25 Guide frame part 30 Coil terminal 31, 32 Prismatic shape part 32 (coil connection part) 33 Terminal piece part

Claims (3)

(57) [Claims] And 1. A coil spool implementing an electromagnetic coil, is mounted and fixed to the coil spool, have a pair of coil terminals which are electrically connected to said electromagnetic coil, said co
Into the coil terminal.
Coil connection for connecting the rod-shaped part and the lead wire of the electromagnetic coil
Part and a terminal piece part led out to the outside, the coil
The spool is provided with a pair of mounting holes into which the rods are pressed.
In the terminal mounting structure for the electromagnetic coil obtained above,
The rod-shaped part and the coil connection part of the
Formed symmetrically about the axis of one part, and the rod-shaped part
Any of the coil connection portions can be mounted in the mounting hole.
And the coil spool has the
Rotation of the coil terminal about the axial direction of the mounting hole
A terminal mounting structure for an electromagnetic coil, wherein a guide portion for regulating the pressure is provided. 2. The coil terminal according to claim 1, wherein the coil terminal is substantially
A terminal mounting structure for an electronic coil, wherein the terminal mounting structure is formed in a T-shape . 3. The terminal mounting structure for an electromagnetic coil according to claim 1, wherein the rod-shaped portion is a prism-shaped portion having a rectangular cross section, and the mounting hole is a round hole having a circular cross section.