JP2015220188A - Terminal, terminal fixing structure and circuit breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal capable of suppressing deformation of a hole into which a screw is inserted when the terminal is manufactured by bending and processing a terminal plate.SOLUTION: Disclosed is a terminal comprising: a first flat plate having a hole into which a screw is inserted; a second flat plate arranged in the direction intersecting with the first flat plate and a bent part which connects the first flat plate and the second flat plate. This terminal has an opening in an intermediate region of the bent part.

Description

  The present invention relates to a terminal to which a crimp terminal or the like is connected and a fixing structure for fixing the terminal.

Conventionally, what was described in Unexamined-Japanese-Patent No. 10-134859 (patent document 1) is known as terminal part structures, such as a circuit breaker.
In Patent Document 1, in a terminal device of an electrical apparatus in which a round crimp terminal or the like is connected to a fixed terminal having a screw hole fixed to a terminal housing portion of a frame partitioned by an insulating wall, a tip of the screw hole has a tip. A terminal screw composed of a male screw to be coupled and a reverse L-shaped washer having a guide plate portion which is rotatably held by the male screw and is bent to one side of the fixed terminal; When the guide plate portion of the inverted L-shaped washer is inserted to guide the movement of the guide plate portion in the vertical direction, the guide of the guide plate portion is released when the tip of the male screw is coupled to the fixed terminal. An engaging portion that holds a guide plate portion that is guided by the guide groove so that a front end of the male screw has a constant interval with the fixed terminal, and a guide plate portion of the inverted L-shaped washer. And what is formed on the guide groove side is described And that (see claim 1 of Patent Document 1).

Japanese Patent Laid-Open No. 10-134859

In the terminal device described in Patent Document 1, the inverted L-shaped washer is composed of a guide plate portion and a horizontal portion having a hole through which a male screw penetrates, and the washer having such a shape usually folds and presses the plate material. It is formed by processing.
In such bending and pressing, the hole provided in the horizontal portion of the inverted L-shaped washer is generally formed by punching or the like before bending or pressing.
However, in the case of performing the process of bending a plate material in which holes are formed in advance into an inverted L shape, if the distance between the bent portion and the horizontal hole is short, the plate material made of a conductive metal such as copper at the time of the bending process Since the material flows, there is a problem that the material of the horizontal portion forming the hole flows toward the bent portion, and the shape of the round hole formed in the horizontal portion is deformed.
In particular, when the size and thickness of the horizontal part of the terminal itself are desired to be smaller and lighter in order to make the terminal device as a whole compact and lightweight, the hole becomes closer to the bent part, so the deformation of the hole becomes more prominent. End up.
Therefore, the present invention provides a terminal capable of suppressing deformation of a hole through which a screw is inserted when a terminal is manufactured by bending a terminal plate.

  As a configuration for solving the above problem, the terminal of the present invention includes a first flat plate having a hole through which a screw is inserted, a second flat plate arranged in a direction intersecting the first flat plate, A bent portion that connects the first flat plate and the second flat plate, and has an opening in an intermediate region of the bent portion.

ADVANTAGE OF THE INVENTION According to this invention, when manufacturing a terminal by bending a terminal board, the terminal which can suppress the deformation | transformation of the hole which penetrates a screw can be provided.
Moreover, the terminal of this invention can also simplify the structure for fixing the said terminal to an electric equipment.
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a perspective view which shows the specific shape of the terminal of this invention. It is a perspective view which shows the modification of the shape of the terminal of this invention. It is a figure which shows the example which applied the terminal of this invention as a contact of a circuit breaker. It is the cross-sectional perspective view which cut | disconnected one side in the circuit breaker of the state which fixed the terminal of FIG. 3, the case, and the cover integrally. It is the schematic perspective view which extracted the vicinity of the fixing structure of the terminal of a circuit breaker, a case, and a cover. It is the schematic perspective view which extracted the vicinity of the fixing structure of the terminal of a circuit breaker, a case, and a cover.

Embodiments of the present invention will be described below with reference to the drawings.
Example 1
FIG. 1 is a perspective view showing a specific shape of the terminal of the present invention.
As shown in FIG. 1, the terminal 10 of the present invention includes a first flat plate 11, a second flat plate 12, a bent portion 13 that connects the first flat plate 11 and the second flat plate 12, and the first flat plate 11. And a round hole 14 through which a screw is inserted, and an opening 15 formed in the bent portion 13 at an intermediate position of the width of the first flat plate.

In manufacturing the terminal 10 of the present invention, first, a plate material having a size necessary for the terminal 10 is cut out from a plate material of a conductive material for a terminal such as a copper alloy, for example, by punching.
At this time, the round hole 14 through which the screw is inserted and the penetrating opening 15 provided at a position corresponding to the bent portion 13 are simultaneously formed by punching. Thereby, the connection area | region 16 is formed between the round hole 14 and the opening part 15 of the cut-out board | plate material.

The plate material cut out in this way is bent at the bent portion 13 by, for example, pressing. By performing the bending process, the shape of the terminal 10 as shown in FIG. 1 is obtained.
At this time, by forming the opening 15 in the bent portion 13 before the bending process, it is possible to suppress or prevent the round hole 14 after the bending process from being deformed.
For example, when the terminal plate is bent at the bent portion 13 without forming the opening 15 of the present invention, the first flat plate 11 and the second flat plate are continuously connected via the bent portion 13. Therefore, the shape of the round hole 14 is deformed when the material flows along with the plastic deformation of the metal.
In contrast, by forming the opening 15 in the bent portion 13 as in the present invention, the first flat plate 11 and the second flat plate 12 are discontinuous in the region of the opening 15. The influence of the material flow accompanying the plastic deformation described above is reduced, and as a result, the deformation of the round hole 14 can be suppressed or prevented.

(Modification of Example 1)
FIG. 2 is a perspective view showing a modification of the shape of the terminal of the present invention.
In the embodiment shown in FIG. 1, the opening 15 has a rectangular cross section. However, as described above, there is no flow of material during bending between the first flat plate 11 and the second flat plate 12. As long as a discontinuous portion can be formed as described above, an arbitrary cross-sectional shape may be used.
For example, as shown in FIG. 2, a cross-sectional shape in which the side of the opening 15 on the connection region 16 side has an arc shape can be applied.
According to the opening 15 having such a cross-sectional shape, the crimping terminal or the like that is electrically connected to the normal terminal 10 often has a circular tip, so that it makes contact with the entire tip of the circular crimping terminal. Can be secured.

(Example 2)
FIG. 3 is a diagram showing an example in which the terminal of the present invention is applied as a contact of a circuit breaker.
As shown in FIG. 3, the circuit breaker has a structure in which the terminal 10 of the present invention is fixed in such a manner as to be sandwiched between the case 20 and the cover 30 from above and below.

4 is a cross-sectional perspective view of the circuit breaker in which the terminal 10, the case 20, and the cover 30 shown in FIG.
As shown in FIG. 4, in the circuit breaker of the present embodiment, a recess having a shape corresponding to the second plane of the terminal 10 is formed in the case 20, and the cover 30 is attached after the terminal 10 is fitted in the recess. When fitting from the upper side of the terminal 10, the claw portion 31 provided on the inner surface side of the cover 30 is inserted into the opening 15 of the terminal 10, thereby ensuring the positioning of the terminal 10 in the circuit breaker. it can.
Further, in the circuit breaker using the terminal of the present invention, it is not necessary to perform screw fastening or the like when fixing the terminal 10 to the case 20, and it is not necessary to consider the space for the head of the bolt. The number of parts can be reduced and the structure can be simplified.

5 and 6 are schematic perspective views of the vicinity of the fixing structure of the terminal 10, the case 20, and the cover 30 of the circuit breaker according to the present embodiment.
As shown in FIG. 5, in the circuit breaker according to the present embodiment, the interior of the case 20 is divided into three parts, the terminals 10 are fitted in the respective spaces, and then the cover 30 is attached from above to form a fixing structure.
The cover 30 has substantially the same width as that of the case 20 in appearance, and the interior of the cover 30 is divided into three like the case 20, and a claw portion 31 is formed in each space.
By inserting the three claw portions 31 of the cover 30 into the openings 15 of the three terminals 10, the terminal 10, the case 20, and the cover 30 are integrated as shown in FIG. A strong fixing structure is formed.

In Example 2 mentioned above, it is preferable that the width | variety of the terminal 10 is substantially the same as the width | variety of the space where the case 20 was divided | segmented.
With such a configuration, when a crimp terminal or the like is bolted to the terminal 10, the side surface of the terminal 10 and the side surface of the space of the case 20 come into contact with each other. Done.

In addition, this invention is not limited to an above-described Example, Various modifications are included.
For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
Furthermore, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  In the above-described embodiments, the example in which the terminal portion structure of the present invention is applied to a circuit breaker has been shown. The present invention can also be applied to connecting portions of other electric devices and electronic devices that form the above.

DESCRIPTION OF SYMBOLS 10 Terminal 11 1st flat plate 12 2nd flat plate 13 Bending part 14 Round hole 15 Opening part 16 Connection area 20 Case 30 Cover 31 Claw part

Claims (5)

A first flat plate having a hole through which a screw is inserted, a second flat plate arranged in a direction intersecting the first flat plate, and a bent portion connecting the first flat plate and the second flat plate A terminal consisting of
A terminal having an opening in an intermediate region of the bent portion. The terminal according to claim 1,
A terminal having a circular arc shape on a side of the opening located on the first flat plate side. A terminal fixing structure comprising a terminal, a case for holding the terminal on an upper surface, and a cover fixed by contacting the case with the terminal interposed therebetween,
The terminal is a terminal described in claim 1 or 2,
The cover has a claw projecting toward the case, and the terminal, the case, and the cover are integrated by fitting the claw into the opening of the terminal. Terminal fixing structure characterized by this. A circuit breaker comprising: a terminal; a case for holding the terminal on an upper surface; and a cover fixed by coming into contact with the case across the terminal;
The terminal is a terminal described in claim 1 or 2,
The cover has a claw projecting toward the case, and the terminal, the case, and the cover are integrated by fitting the claw into the opening of the terminal. A circuit breaker characterized by that. The circuit breaker according to claim 4,
The circuit breaker according to claim 1, wherein the case has a partitioned space for holding the terminal, and the width of the space and the width of the terminal are the same.

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