JPH09167651A - Connecting terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance workability in inserting-installing to a housing by fixing a movable contact piece by folding back a pressing-down piece extendedly arranged on the front end of a top plate, and arranging a guide part in front of a folding-back part. SOLUTION: A front part of a movable contact piece 11 is fixed by a pressing-down piece 14 extended to the front of a top plate 10, and a mating side inserting contact terminal is inserted between a contact point 13 of the movable contact piece 11 and a contact part 6 of a bottom plate 7. A guide piece 18 as a guide part is extendedly arranged in front of a folding-back part 15 which rises further from one side plate 9 and is folded back in an inverse U shape and holds the top plate 10 when the tip comes into contact witch the top plate 10. By this constitution, even if an inverse U-shaped part of the folding-back part 15 stands up forward, since the guide piece 18 is extendedly arranged in the folding-back part 15, the guide piece 18 becomes a guide when it is inserted into an opening part of a housing, and a connecting terminal 1 can be smoothly inserted and installed. It is desirable that a recess part 20 is formed in an extendedly arranged place with the folding-back part 15 of the guide piece 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a female connection terminal having a movable contact piece and fitted with a mating insertion connection terminal.

[0002]

2. Description of the Related Art Usually, this type of female connecting terminal has a connecting portion for receiving a mating insertion connecting terminal on the front side and a wire crimping portion for connecting electric wires on the rear side. It is formed by punching and bending a metal plate.

In this case, the connecting portion is a bottom plate, two side plates standing up from both sides of the bottom plate, a top plate further bent horizontally from one of the side plates, and further standing up from the other side plate and having an inverted U shape. It folds downward in a letter shape, the tip comes into contact with the top plate and holds the top plate, and it is connected to the side of the top plate via a connecting piece, and the connecting piece is folded back so that it is superposed on the inside of the top plate. , A movable contact piece fixed to the top plate by folding back a pressing piece extending on the front end of the top plate, and a flat blade-shaped insert on the mating side between the movable contact piece and the top plate. It is known that a plug-in connection terminal is accepted (see Japanese Patent Publication No. 5-86033).

That is, to explain this prior art with reference to the drawing, in FIG. 8, the connection terminal 31 has a connection portion 32 and a wire crimp portion 33, and this connection portion 32 has a bottom plate 35 and a bottom plate 35. Both side plates 36 and 37 that are set up on both the left and right sides of
A top plate 38 which is further bent horizontally from one side plate 36 and a top plate 38 which is further raised from the other side plate 37 and is folded back downward in an inverted U shape so that the tip 39a abuts the top plate 38 and presses the top plate 38. The folded back 39 to be held is connected to the side of the top plate 38 via a connecting piece 40, and the connecting piece 40 is folded back so as to be superposed on the inside of the top plate 38, and extended to the front end of the top plate 38 thereon. Top plate 3 by folding back the presser piece 41
8 and a movable contact piece fixed to 8.

In FIG. 8, 42 is a core wire crimping portion, 4
Reference numeral 3 is a cover crimping portion.

[0006]

However, in this conventional technique, there are advantages such as less waste of material removal and easy and strong attachment of the movable contact piece, but the movable contact piece is connected to the top plate. It is a structure in which it is connected through, the connection piece is folded back and overlapped inside the top plate,
Since the connecting portion is formed into a rectangular tube shape as a whole, in the case of folding back in an inverted U shape, the inverted U-shaped portion is exposed to the front side, and the inverted U-shaped portion is When this connection terminal is inserted into the housing and assembled, it may hit the opening of the housing, making it difficult to insert the connection terminal smoothly.

In order to avoid this situation, it is conceivable to make a rounded chamfer on the inverted U-shaped portion in the prior art, but there is a new problem such as an increase in the number of processing steps or an increase in cost. .

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connection terminal which can improve workability when it is inserted and mounted in a housing.

[0009]

In order to solve the above-mentioned problems, the present invention has a rectangular tube-shaped connection for punching and forming one conductive metal plate and electrically connecting it to the mating insertion connection terminal in the front. A connection terminal provided with a wire crimping portion for connecting an electric wire to the rear, the connection portion including a bottom plate, two side plates standing up from both sides of the bottom plate, and a horizontal direction from one of the side plates. A top plate that is bent in a vertical direction, a fold-back that is further raised from the other of the side plates and that is folded back in an inverted U shape, and has a tip that abuts the top plate and holds the top plate, and a side of the top plate. To the inside of the top plate by folding the connecting piece over the inside of the top plate, and by pressing back a holding piece extending to the front end of the top plate, the movable piece is fixed to the top plate. A contact piece, and the movable contact piece has an inverted mountain shape toward the inside. Characterized in that the mating side insertion connection terminal is inserted between the movable contact piece and the bottom plate, and a guide portion serving as a guide when inserting into the housing is provided in front of the folding back. It is what

Further, the guide portion is characterized in that it is a guide piece extending in the folded portion.

Further, the guide piece is characterized in that an R chamfer is applied to a tip thereof.

Further, the present invention is characterized in that an escape portion is formed at a location where the guide piece extends from the folded back portion.

With the above structure, since the guide portion which serves as a guide when inserting into the housing is provided in front of the folded portion, the insertion into the housing can be performed smoothly.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of an embodiment according to the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a vertical sectional view of FIG. 2, and FIG.
1 is a bottom view, FIG. 5 is a rear view of FIG. 1, FIG. 6 is a left side view of FIG. 1, and FIG.

1 to 7, the connecting terminal 1 includes a front connecting portion 2 for receiving a mating insertion connecting terminal and a rear electric wire crimping portion 3, and all the portions are formed by folding one conductive metal plate. The wire crimping portion 3 is formed by bending and the core wire crimping portion 4 and the coating crimping portion 5 are respectively U-shaped as in the conventional one.
It is shaped like a letter.

The connecting portion 2 includes a bottom plate 7 having two contact portions 6 that bulge inward, side plates 8 and side plates 9 connected to both left and right sides of the bottom plate 7, and one side plate 8 bent horizontally. 10
The movable contact piece 11 connected to the side of the top plate 10 is folded back and fixed in a substantially rectangular tube shape surrounded by. The movable contact piece 11 includes a top plate 1
An inverted mountain-shaped contact 13 having an apex at an intermediate portion between the base portion connected to 0 and the free end 12 is formed, and the free end 12 slides on the inner surface of the top plate 10. Further, the front end portion of the movable contact piece 11 is fixed by a pressing piece 14 extending to the front of the top plate 10. Then, the contact 13 of the movable contact piece 11 and the bottom plate 7
The insertion contact terminal on the other side is inserted between the contact portion 6 and the contact portion 6.

The upper portion of the side plate 9 is raised further upward than the top plate 10, and the tip 16 of the folded back portion 15 which is folded downward in an inverted U shape is in contact with the top plate 10. Reference numeral 17 denotes a convex portion that bulges from the top plate 10 into the connecting portion 2 in order to prevent excessive deformation of the movable contact piece 11.

Further, in front of the folding back 15, there is a guide piece 18 as a guide portion extending to the folding back 15, and an R chamfer 19 is formed at the tip of this guiding piece 18 and the guiding piece 18 of the folding back 15 is formed. An escape portion 20 is formed at a location extended from.

Before the connection terminal 1 is bent and formed, it is punched out from a single conductive metal plate in a shape as shown in FIG. There, there are a bottom plate 7 having a contact portion 6, side plates 8 and 9 connected to the left and right sides of the bottom plate 7, a top plate 10 connected to one side plate 8, and a connecting piece 21 from the front end of the top plate 10 to the side.
A movable contact piece 11 is formed so as to be continuous through.

A core wire crimping portion 4 and a cover crimping portion 5 are formed behind the bottom plate 7 and both side plates 8 and 9. Top plate 1
A holding piece 14 is provided in front of 0, and a folding back 15 is provided on a side portion of the side plate 9 so as to be folded back on the top plate 10.

A guide piece 18 is extended on the turn-back portion 15, an escape portion 20 is formed at the extended portion, and an R chamfer 19 is formed on the tip of the guide piece 18.

Reference numeral 23 in FIG. 6 denotes an inverted U-shaped portion of the turnback 15.

The present embodiment has the configuration as described above,
Even if the inverted U-shaped portion 23 of the folded back 15 is erected forward, the folded back 15 has a guide piece 18 as a guide portion, so that the guide piece 18 serves as a housing (not shown). It serves as a guide when it is inserted into the opening (not shown), and the connection terminal 1 can be smoothly inserted and attached to the housing.

Further, the chamfer 19 is formed on the tip of the guide piece 18.
Therefore, the inverted U-shaped portion 23 does not come into contact with the opening portion of the housing at the time of the above-described insertion and attachment, and the operation can be performed extremely smoothly.

Further, since the escape portion 20 is formed at the extending portion of the folded portion 15 of the guide piece 18, the bending work of the folded portion 15 can be easily performed without the guide piece 18 interfering.

Moreover, since the guide piece 18 can be formed by punching out one conductive metal plate, there is no change in the advantage that the waste of material removal is the same as in the prior art, and the processing step is increased by one step. There will be no situation in which the cost will increase.

[0028]

As described above, according to the connecting terminal of the first aspect of the present invention, since the guide portion that serves as a guide when inserting into the housing is provided in front of the folded portion, insertion and mounting into the housing is easy. Can be done

According to the connection terminal of the second aspect of the present invention, since the guide piece extending in a folded manner is used as the guide portion, one conductive metal plate can be formed by press punching.

Further, according to the connecting terminal of the third aspect of the present invention, since the tip of the guide piece is chamfered, it can be inserted into the housing extremely smoothly.

Further, according to the connecting terminal of the fourth aspect of the present invention, since the escape portion is formed at the extended portion of the guide piece and the folded portion, the bending work in the folding step of the folded portion can be easily performed. it can.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a longitudinal sectional view of FIG. 2;

FIG. 4 is a bottom view of FIG. 1;

FIG. 5 is a rear view of FIG. 1;

FIG. 6 is a left side view of FIG. 1;

FIG. 7 is a plan view of the unfolded state.

FIG. 8 is a perspective view of a conventional technique.

[Explanation of symbols]

 1 Connection Terminal 2 Connection Part 3 Wire Crimping Part 7 Bottom Plate 8 One Side Plate 9 The Other Side Plate 10 Top Plate 11 Movable Contact Piece 14 Holding Piece 15 Folding Back 16 Tip 18 Guide Piece 19 R Chamfer 20 Relief Section 21 Connecting Piece

Claims (4)

[Claims] Claims: 1. A sheet of conductive metal is punched to form a rectangular tube-shaped connecting portion for electrically connecting with a mating insertion connecting terminal in the front and a wire crimping portion for connecting an electric wire in the rear. In the connection terminal, the connection portion includes a bottom plate, two side plates that are erected from both sides of the bottom plate, a top plate that is further bent in a horizontal direction from one of the side plates, and is further erected from the other of the side plates. Raising and folding downward in an inverted U-shape, the tip of which abuts against the top plate to hold the top plate, and the side of the top plate is connected via a connecting piece, and the connecting piece is folded back. And a movable contact piece fixed to the top plate by folding back a pressing piece extending from the front end of the top plate on top of the movable contact piece. To form an inverted mountain shape and insert the mating side between the movable contact piece and the bottom plate. Connection terminals as well as to plugging the connection terminals, characterized in that a guide portion serving as a guide during insertion into the housing in front of the folding. 2. The connection terminal according to claim 1, wherein the guide portion is a guide piece extending in the folded portion. 3. The connection terminal according to claim 2, wherein the leading end of the guide piece is rounded. 4. The connection terminal according to claim 2 or 3, wherein an escape portion is formed at a location where the guide piece extends from the folded back portion.