JP2003331965A - Connecting terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a connecting terminal with an improved structural strength of a connecting part. <P>SOLUTION: The connecting part 11 is made by forming a bottom plate 13, both side plates 14, 15 and a top plate 16 almost in a box shape. One or a plurality of slit-shaped locking holes 16a are formed in the vicinity of an overlapping end edge part of the side plate 15 with the top plate 16, with a locking jutted piece 15a having a height equivalent to the thickness of a conductive metal plate fitted at the end edge part of the side plate 15 insertion-coupled with the locking hole 16a. With this, the connecting part 11 is assembled firmly into nearly a box shape, without fear of deformation. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving connecting terminal for electrically connecting to a mating insertion connecting terminal.

[0002]

2. Description of the Related Art Conventionally, this type of connection terminal has a connection portion for receiving a mating insertion connection terminal on the front side, and a wire crimping portion for connecting electric wires on the rear side. Is formed by bending.

FIG. 6 is a longitudinal sectional view of a conventional connection terminal, and FIG.
Is a cross-sectional view of the connecting portion, 1 is a connecting portion of a connecting terminal, and 2 is a wire crimping portion. The connection part 1 is formed in a substantially box shape surrounded by a bottom plate 3, side plates 4 and 4 connected to both left and right sides thereof, and top plates 5 and 5 connected to both sides thereof.
The cut surfaces at the edges of the top plates 5 and 5 serve as mating surfaces for both. Further, 6 is a movable contact piece arranged in the connection portion 1.

There is also a case where the top plate 5 is continuously provided only on one side plate 4 and the end edges of the side plate 4 are abutted against the end edges of the top plate 5 as shown in FIG.

[0005]

However, in the conventional example shown in FIGS. 6 and 7, when a pressing force is applied from above the top plate 5 at the connecting portion 1, as shown in FIG. In some cases, the top plates 5 and 5 may open as shown in FIG. 10, depending on the direction of the force.

Further, in the conventional example shown in FIG. 8, the pressing force applied to the top plate 5 from above causes a lateral shift in the overlapping portion of the top plate 5 and the side plate 4, and as shown in FIG. 1 may be deformed.

[0007] Each of these modifications has a problem that the other party's plug-in connection terminal cannot be inserted, or even if it is inserted, sufficient electrical connection performance cannot be obtained.

An object of the present invention is to provide a connection terminal which solves the problems of the above-mentioned conventional example and improves the structural strength of the connection portion.

[0009]

A connection terminal according to the present invention for achieving the above-mentioned object is made by punching a conductive metal plate.
Formed by bending, a connection part for receiving the mating insertion connection terminal is provided in the front, a wire crimping part for connecting the electric wire is provided in the rear, and the connection part is connected to the bottom plate and to both left and right sides thereof. It is surrounded by first and second side plates and a top plate connected to the first side plate, and the edge of the second side plate is abutted with the edge of the top plate to form a substantially box shape. In the formed connection terminal,
A locking projection is formed at an end edge of the second side plate, and a slit-shaped locking hole for fitting the locking projection is provided in an edge portion of the top plate. The second by the locking hole
The side plate and the top plate are connected to each other.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail based on the embodiments shown in FIGS. FIG. 1 is a developed view of the connection terminal, and FIG. 2 is a vertical sectional view. As for the connection terminals, all parts including the connection part 11 for receiving the mating insertion connection terminal and the rear wire crimping part 12 are punched out from a conductive metal plate as shown in FIG. 1 and further bent as shown in FIG. Is formed.

The connecting portion 11 is formed by bending a bottom plate 13, side plates 14 and 15 connected to both left and right sides thereof, and a top plate 16 connected to one side plate 14 at a line segment indicated by a chain line in FIG. As a result, they are formed in a substantially box shape as shown in FIGS. The wire crimping portion 12 is formed with a first crimping portion 12a for crimping the core wire of the electric wire and a second crimping portion 12b for crimping the coating of the electric wire.

The bottom plate 13 has a contact portion 13 which bulges inward.
There is provided a bottom plate locking hole 13b that fits into the bottom locking part of the housing that accommodates a and this connection terminal. Top plate 1
6, one or a plurality of latch-shaped locking holes 16a are formed in the vicinity of the edge portions where the side plates 15 abut and overlap each other, and the thickness of the conductive metal plate provided at the edge ends of the side plates 15 is increased. The locking projection 15a having a corresponding height has a locking hole 16a.
Has been inserted into.

As shown in FIG. 1, a strip-shaped movable contact piece 17 extends obliquely behind the top plate 16. The movable contact piece 17 is folded back inside the connecting portion 11 via a gentle curved portion 17a in parallel to the top plate 16 as shown in FIG. The apex that bulges downward near the center is the contact point 17
It is formed in the shape of a leaf spring having an elastic property by forming an inverted mountain shape indicated by b. A hole 17c is provided at the tip of the movable contact piece 17.
Is provided, and a locking piece 16b obtained by bending a part of the top plate 16 downward is fitted into the hole 17c.

The side portion 18 extending forward from the top plate 16 is folded back inward to serve as a guide for the mating connecting terminal, and the movable contact piece 17 moves so that the hole portion 17c does not come off from the locking piece 16b. Thus, the tip of the movable contact piece 17 is held down. Further, the top plate 16 is formed with a protrusion 16c that is recessed in the connection portion 11 to prevent excessive deformation of the movable contact piece 17.

Further, as shown in FIG. 1, both side plates 14 and 15 are provided.
A relatively small locking strip 1 near the top plate 16 at the rear of the
9 and 20 are formed rearward, and are bent inward when assembled, so that the curved portion 17a of the movable contact piece 17 is bent.
It is supposed to be located behind.

This connection terminal is formed by punching and bending through a number of forming press steps.
The movable contact piece 17 is arranged at a predetermined position through the process shown in FIG. First, as shown in (a), the connecting portion 11 is formed into a box shape while largely folding back the movable contact piece 17 in which the contact portion 17b is formed in advance. In this process, as shown in (b), the movable contact piece 17 is pressed upward in the Y direction, and the tip is pulled forward, and as shown in (c), the top plate 16 is provided in the hole 17c at the tip. Locking piece 16
Insert b. After the locking piece 16b is fitted into the hole 17c, the side portion 18 of the top plate 16 is bent inward so as to press the tip of the movable contact piece 17 as shown in (d), and the movable contact piece 17 is The hole 17c is prevented from moving away from the locking piece 16b.

Further, the side plates 14 and 15 are raised and the top plate 1 is raised.
As shown in FIG. 3, both side plates 14 and 15 are stacked in the process of stacking
Bending inward the locking strips 19 and 20 provided on the
As shown in FIG. 4, the locking projection 15 provided at the end of the side plate 15
Insert a into the locking hole 16a of the top plate 16. The side plate 15 may be provided with the locking hole, and the top plate 16 may be provided with a locking projection that fits the locking hole.

In this housing, the bottom plate locking hole 13b is fitted into the bottom locking portion of the housing in the housing made of synthetic resin, and the locking lances of the housing are locked to the locking strips 19 and 20, respectively. By locking the tip of the connecting portion 11 with the tip locking portion of the housing, it is fixed to the housing, and the connecting terminal is prevented from slipping out in the front-back direction with respect to the housing.

Since the locking piece 16b of the top plate 16 is fitted into the hole 17c of the movable contact piece 17 to prevent the movable contact piece 17 from moving rearward, the flatness of the mating insertion connection terminal is eliminated. When the blade-shaped connecting portion is inserted between the leaf spring-shaped top portion 17b of the movable contact piece 17 and the contact portion 13a of the bottom plate 13 and fitted, the reverse of the movable contact piece 17 with which the tip of the insertion connecting terminal abuts. Even if a backward force is applied to the movable contact piece 17 due to the frictional force between the mountain-shaped slope, the movable contact piece 17 is not compressed backward and a smooth insertion operation is possible.

Further, even when the mating side insertion connection terminal is obliquely inserted and the frictional force with the movable contact piece 17 is larger, the risk of buckling the movable contact piece 17 can be reduced.

[0021]

As described above, in the connection terminal according to the present invention, the side plate and the top plate are provided with the locking projections and the locking holes, and these are fitted to each other, so that the structural strength of the connection portion is improved. Can be improved.

[Brief description of drawings]

FIG. 1 is a development view of a connection terminal.

FIG. 2 is a vertical sectional view of a connection terminal.

FIG. 3 is an enlarged plan view of a connecting portion.

FIG. 4 is an enlarged cross-sectional view of a connecting portion.

FIG. 5 is an assembly explanatory diagram of a movable contact piece.

FIG. 6 is a vertical sectional view of a connection terminal of a first conventional example.

FIG. 7 is a transverse sectional view of a first conventional example.

FIG. 8 is a transverse sectional view of a second conventional example.

FIG. 9 is a cross-sectional view of a deformed state of the first conventional example.

FIG. 10 is a transverse cross-sectional view of a deformed state of the first conventional example.

FIG. 11 is a transverse cross-sectional view of a modified second conventional example.

[Explanation of symbols]

11 Connection 12 Wire crimping part 13 Bottom plate 14 and 15 side plates 16 Top plate 16a Locking hole 16b locking piece 17 Movable contact piece 17a Curved part 17b top 17c hole 18 sides 19, 20 Locking strip

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yukifumi Machida             529-1 Toyohamakita, Nerima-ku, Tokyo Ryosei             Denso Co., Ltd. (72) Shinji Yamaguchi             529-1 Toyohamakita, Nerima-ku, Tokyo Ryosei             Denso Co., Ltd. (72) Inventor Seiichiro Hayashi             529-1 Toyohamakita, Nerima-ku, Tokyo Ryosei             Denso Co., Ltd. (72) Inventor Nobuhiro Kimura             10213-31 Tana, Sagamihara-shi, Kanagawa Union             Inside Machinery Co., Ltd.

Claims (2)

[Claims] 1. A conductive metal plate is formed by punching and bending, a connecting portion for receiving a mating insertion connecting terminal is provided in the front, and an electric wire crimping portion for connecting an electric wire is provided in the rear, and the connecting portion is provided. Is surrounded by a bottom plate, first and second side plates connected to the left and right sides of the bottom plate, and a top plate connected to the first side plate, and the second side plate of the second side plate is attached to an edge portion of the top plate. In a connection terminal formed by abutting the edges together in a substantially box shape, for forming a locking protrusion on the edge of the second side plate and for fitting the locking protrusion on the edge of the top plate. The slit-like locking hole is provided, and the second side plate and the top plate are connected by the locking projection and the locking hole. 2. The connection terminal according to claim 1, wherein a plurality of the locking projections and the locking holes are provided respectively.