JPH05151854A - Terminal structure - Google Patents

Abstract

PURPOSE:To enable making thin the thickness of a formed body which is integrally formed with terminals. CONSTITUTION:A formed body 3 is integrally formed with two terminals 1, 2 in a condition in which intermediate portions 1c, 2c having flat portions 1f, 2f which are bent substantially orthogonally to both end portions 1a, 1b and 2a, 2b thereof, respectively, are embedded in the formed body 3 so as to cause the both end portions 1a, 1b and 2a, 2b to be drawn out from both side faces of the formed body 3, respectively. Since, therefore, the intermediate portions 1c, 2c of the terminals 1, 2 are disposed within the formed body with the thicknesswise direction thereof being in coincidence with the thicknesswise direction of the flat portions 1f, 2f, it is possible to make thin the thickness of the formed body 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal structure used in electromagnetic relays and the like.

[0002]

2. Description of the Related Art Conventionally, the following types of terminal structures have been known, which will be described with reference to FIGS.

This terminal structure is a contact switching device used in an electromagnetic relay that is driven by an electromagnet device (not shown) to open and close a current. Two terminals A and B are provided on both sides of the molded body C. From the above, the intermediate portions A ₃ and B ₃ are integrally molded by inserting the intermediate portions A ₃ and B ₃ into the molded body C so as to lead out both end portions A ₁ and A ₂ and B ₁ and B ₂ , respectively.

More specifically, the two terminals A and B are made of flat conductive plates and connected to the outside through intermediate portions A ₃ and B _{3 each} having one end A ₁ and B ₁ having a substantially L shape. It is formed by connecting the other end parts A ₂ and B ₂ to each other, the terminal A fixes the fixed contact A ₄ to the one end part A ₁ , and the terminal B connects the one end part B ₁ to the movable contact B ₄ to the tip part. Both ends A ₁ , A ₂ from both sides in the thickness direction of the molded body C, which has the fixed base end of the movable spring B ₅ fixed and is formed of an insulating material such as synthetic resin in a substantially flat plate shape. And B ₁ and B ₂ respectively, so that the movable contact B ₄ can be contacted with and separated from the fixed contact A ₄ .
The respective intermediate portions A ₃ and B ₃ are integrally molded in a state where they are put inside the molded body C. At this time, two terminals A and B
Is formed by punching out a hoop-shaped conductive plate having a plate width of at least W, as shown in FIG.

Then, when the movable spring B ₅ is driven in the substantially central portion by a non-illustrated electromagnet device mounted on the molded body C which is the base of the electromagnetic relay, the movable contact B ₄ contacts the fixed contact A ₄ . Separated, the current is opened and closed.

[0006]

In the above-mentioned conventional terminal structure, two terminals A and B made of a flat conductive plate are used.
From the both sides in the thickness direction of the molded body C, which is made of an insulating material and has a substantially flat plate shape and is the base of the electromagnetic relay.
Intermediate parts A ₃ , B _{3 to} derive A ₁ , A ₂ and B ₁ , B ₂ respectively
The terminals A and B can be easily and accurately fixed to the molded body C because they are formed by integrally molding the molded body C inside the molded body C. If the direction of deriving both ends A ₁ , A ₂ and B ₁ , B ₂ of the terminals A, B from the surface of is thin, the strength of the molded body C itself becomes weak and it is in the thickness direction of the molded body C. Since the plate width of the intermediate parts A ₃ and B ₃ of the terminals A and B must also be made thin, the terminal strength at that part becomes weak and the conductor resistance becomes large, which adversely affects the characteristics of the electromagnetic relay. Therefore, there was a limit in trying to reduce the thickness of the molded body C in order to reduce the size of the electromagnetic relay.

Further, when the two terminals A and B are formed by punching out a hoop-shaped conductive plate, the plate width W of the hoop-shaped conductive plate is at least at both ends as shown in FIG.
A crossover dimension including the outermost portions of A ₁ , A ₂ and B ₁ , B ₂ is required, and a material having a large plate width is used accordingly, resulting in a large material loss.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a terminal structure capable of reducing the thickness of a molded body.

[0009]

In order to solve the above-mentioned problems, in the terminal structure of the present invention, an intermediate portion is provided inside the molded body so that the terminal can lead out both ends from both sides of the molded body. In the terminal structure that is put and integrally molded,
The intermediate portion of the terminal is formed to have a flat portion that is bent substantially at right angles to both end portions.

[0010]

According to the terminal structure of the present invention, the intermediate portion of the terminal, which is inserted into the molded body and integrally molded, is formed to have a flat portion which is bent substantially at right angles to both end portions. From
In the middle part of the terminal, the thickness direction of the molded body, that is, the direction in which both end parts of the terminal are led out from the surfaces on both sides thereof is not the plate width direction of the middle part of the terminal as in the conventional example, but the plate thickness of the flat part. Since it is arranged inside the molded body in conformity with the direction, the thickness of the molded body can be made thinner than in the conventional example.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.

This terminal structure is a contact switching device used in an electromagnetic relay which is driven by an electromagnet device to be described later to open and close a current. Two terminals 1 and 2 are provided on both sides of the molded body 3. From the above, the intermediate portions 1c and 2c are integrally molded by inserting the intermediate portions 1c and 2c into the molded body 3 so as to lead out the both end portions 1a and 1b and 2a and 2b, respectively.

More specifically, as shown in FIG. 2, the two terminals 1 and 2 are formed by connecting hoop-shaped conductive plates having at least a plate width W at intermediate portions 1c and 2c so that both end portions 1a and 1b are connected. 2a, 2b
Are punched into a substantially U shape so that they face each other, and then the two bent portions 1d, 1e of the intermediate portions 1c, 2c shown by the alternate long and short dash line
2a and 2d and 2d and 2e, both ends 1a and 1b and 2a and 2b are formed by bending in opposite directions at substantially right angles. That is, the intermediate portions 1c, 2c are formed to have the U-shaped flat portions 1f, 2f bent substantially at right angles to the both end portions 1a, 1b and 2a, 2b.

Then, the terminal 1 fixes the fixed contact 1g to the one end 1a, the terminal 2 fixes the base end of the movable spring 2h having the movable contact 2g fixed to the one end 2a, and the synthetic resin or the like. Both ends 1a, 1b and 2a, 2b are respectively led out from both sides in the thickness direction of the molded body 3 formed in a substantially flat plate shape with the insulating material of 2 so that the movable contact 2g can be brought into contact with and separated from the fixed contact 1g. , The respective intermediate portions 1c and 2c are put into the molded body 3 and integrally molded.

Next, the movable spring 2h is driven to move the movable contact 2g.
An electromagnet device for bringing the fixed contact 1g into and out of contact with the fixed contact 1g will be described.
Is attached to the bobbin 5 in which the coil 5a is wound through and the tip of the other piece 4b has a magnetic pole surface 6a.
It is press-fitted and fixed to form a substantially U-shaped electromagnet. One end 7a of the armature 7 is supported by one piece 4a of the iron core 4, and the other end 7b can be attracted to the magnetic pole surface 6a of the yoke 6. The above-mentioned molded body 3 serves as a base of the electromagnetic relay, and one of the iron core 4 and the receiving groove provided at both ends of the substantially flat plate-shaped portion in which the two terminals 1 and 2 are integrally molded. The piece 4a, the yoke 6, and the one end 7a of the armature 7 are mounted, respectively.

When the coil 5a is excited, the other end 7b of the armature 7 is attracted to the magnetic pole surface 6a of the yoke 6, so that the movable spring 2h is driven by the driving portion 7c of the armature 7 to a substantially central portion. The movable contact 2g comes in contact with and separates from the fixed contact 1g.

In such a terminal structure, the intermediate portions 1c and 2 of the two terminals 1 and 2 which are integrally molded by being placed in the molded body 3 are formed.
Since c is formed with flat portions 1f, 2f bent at substantially right angles to both ends 1a, 1b and 2a, 2b, the intermediate portions 1c, 2c of the terminals 1, 2 are The thickness direction of the body 3, that is, the direction in which the both ends 1a, 1b and 2a, 2b of the terminals 1 and 2 are respectively derived from the surfaces on both sides is not the plate width direction of the intermediate part of the terminal as in the conventional example, but the flat part. Since it is arranged inside the molded body 3 so as to match the plate thickness direction of 1f and 2f, the molded body 3
Can be made thinner than the conventional example, and the height of the electromagnetic relay can be reduced, and the size can be reduced accordingly.

Further, the thickness direction of the molded body 3 is flat in the flat portions 1f, 2f.
This means that the flat surface of the flat parts 1f, 2f receives the external force even if an external force is applied to both ends 1a, 1b and 2a, 2b of the terminals 1, 2 because the flat surface of the flat parts 1f, 2f receives the external force. It is difficult for deformation and loosening of 1 and 2 to occur, and if the flat surface of the flat parts 1f and 2f is formed widely along the molded body 3, the strength of the molded body 3 as a whole can be increased and the conductor resistance can be increased. ..

Further, the shapes of the terminals 1 and 2 in which the flat portions 1f and 2f of the intermediate portions 1c and 2c bent substantially at right angles to the both end portions 1a and 1b and 2a and 2b are developed are as shown in FIG. On both ends 1a, 1b
And 2a and 2b have a U-shape that is opposed to each other. Therefore, when the terminal is formed by punching, the plate width W of the hoop-shaped conductive plate is smaller than that of the conventional example, and the material loss can be reduced. ..

In this embodiment, the number of terminals is two, but the number of terminals is not limited to this.

Further, in this embodiment, the flat portions 1f, 2f of the intermediate portions 1c, 2c have a U-shape, and both end portions 1a, 1b and 2a, 2b are
It is designed to be located on the same plane orthogonal to the flat plate shaped body 3, but the flat parts 1f and 2f are rectangular and both end parts are formed.
Alternatively, 1a, 1b and 2a, 2b may be positioned so as to face each other on the same two planes orthogonal to the flat plate shaped body 3.

[0022]

According to the terminal structure of the present invention, the intermediate portion of the terminal which is integrally molded by being inserted into the molded body is formed to have the flat portion which is bent substantially at right angles to both end portions. From
In the middle part of the terminal, the thickness direction of the molded body, that is, the direction in which both end parts of the terminal are led out from the surfaces on both sides thereof is not the plate width direction of the middle part of the terminal as in the conventional example, but the plate thickness of the flat part. Since it is arranged inside the molded body in conformity with the direction, the thickness of the molded body can be made thinner than in the conventional example.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part showing an embodiment of the present invention.

FIG. 2 is a plan view showing a developed shape of two terminals of the same.

FIG. 3 is an exploded perspective view showing an entire electromagnetic relay of the above.

FIG. 4 is a perspective view of a main part showing a conventional example.

FIG. 5 is a front view of the main part of the above.

[Explanation of symbols]

 1 terminal 1a one end 1b other end 1c middle part 1f flat part 2 terminal 2a one end 2b other end 2c middle part 2f flat part 3 molded body

Front page continuation (72) Inventor Kiyohide Katsutani 1048 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Ltd. (72) Inventor Tatsuya Suzuki, 1048, Kadoma, Kadoma City, Osaka Matsushita Electric Works Ltd.

Claims (1)

[Claims] 1. A terminal structure integrally formed by inserting an intermediate portion into the inside of a molded body so that the terminal can be led out from both side surfaces of the molded body, respectively, and the intermediate portion of the terminal has both end portions. A terminal structure characterized in that it is formed with a flat portion that is bent substantially at a right angle to.