JP3544730B2 - Connecting terminal - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a connection terminal provided with a protruding piece that locks to a locking portion of a housing of a connector at a rear portion of a wire crimping portion.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when a connection terminal is used by being housed in a housing of a connector, the connection terminal is locked by a locking mechanism provided so as not to come out of the housing. In particular, connection terminals used for wiring of automobiles and the like are small in size and easily come out of the housing, so that the locking mechanism is often provided in duplicate.
[0003]
For example, as shown in the partial cross-sectional view of FIG. 3, a connection terminal 5 in which the electric wire 3 is connected to the electric wire crimping piece 4 is accommodated in a terminal accommodating hole 2 formed in the housing 1 of the connector. The connection terminal 5 has a locking piece 7 locked by the locking portion 1a of the housing 1 fitted in the fitting hole 6 to prevent the connection terminal 5 from slipping backward. A rear holder 8 is engaged with the rear end of the housing 1, and the connection terminal 5 is locked at the rear end of the wire crimping piece 4 by a protruding piece 8 a of the rear holder 8, so that the force of the mating terminal from the front is reduced. Even if it is added, the rearward escape is double prevented.
[0004]
Note that, instead of the wire crimping piece 4 of the connection terminal 5 being locked, the stabilizer portion 9 may be locked by a flexible lance.
[0005]
[Problems to be solved by the invention]
However, in the conventional example described above, in order to lock the connection terminal 5 by the locking portion 1a of the housing 1 of the connector, it is necessary to previously form the fitting hole 6, the locking piece 7, the stabilizer portion 9, and the like. In addition, a rear holder 8 is required to lock the wire crimping piece 4 or the stabilizer portion 9, and the wire crimping piece 4 is bent accurately so as to be securely locked by the protruding piece 8 a of the rear holder 8. Because of the necessity, there are problems that the number of manufacturing steps is large and the processing is complicated, and it is difficult to reduce the manufacturing cost.
[0006]
An object of the present invention is to solve the above-described problems and to provide a connection terminal that can reduce the manufacturing cost by simply providing a protruding piece.
[0007]
[Means for Solving the Problems]
A connection terminal according to the present invention for achieving the above object is provided with a connection portion that fits with a terminal on the other side at the front end, and a wire crimp portion that crimps an electric wire at the rear end, and is connected to the wire crimp portion. The connecting terminal is connected to the carrier through one piece, and is sequentially fed and molded by the carrier, and at the connection terminal used in the housing, the boundary between the carrier and the connecting piece is cut to cut off. The connecting piece is bent slightly outward as a protruding piece, and is engaged with a projection provided on the housing.
[0008]
[Action]
In the connection terminal of the present invention having the above-described configuration, since the connecting piece is provided as a protruding piece for locking to the housing, the protruding piece is locked to the protrusion of the housing when housed in the housing.
[0009]
【Example】
The present invention will be described in detail based on the embodiment shown in FIGS.
FIG. 1 is a partial sectional view of the embodiment, in which a terminal housing hole 12 is provided in a housing 11 of the connector, and a first locking projection 13 is provided on an upper wall of the terminal housing hole 12. At the same time, a second locking projection 14 is provided on the lower wall. The first locking projection 13 projects from the flexible portion 15 of the housing 11 and is displaceable upward. The connection terminal 17 to which the electric wire 16 is connected is accommodated in the terminal accommodation hole 12 of the housing 11 thus formed.
[0010]
The connection terminal 17 is formed, for example, for insertion by punching, bending, cutting, embossing, or the like from the conductive metal plate, and an insertion end 21 inserted into a receiving connection terminal (not shown) of the mating side, and the housing 11. A fitting end 22 that fits into the terminal receiving hole 12 to stabilize the connection terminal 17, a core wire crimping piece 23 that crimps the core wire 16 a of the electric wire 16, and a coating crimping piece 24 that crimps the coating 16 b of the electric wire 16. They are provided in series. A projecting piece 25 projecting rearward is provided at the lower rear end of the covering crimping piece 24 by being slightly bent outward.
[0011]
FIG. 2 is a plan view of a conductive metal plate formed by punching to form the connection terminal 17 described above, in which an insertion end 31 formed on an insertion end 21 and a connection end formed on a fitting end 22 are shown. Fitting end part 32, core wire crimping piece part 33 formed on core wire crimping piece 23, covering crimping piece part 34 formed on covering crimping piece 24, and connecting piece part 35 formed on protruding piece 25. And a carrier unit 36 that is incorporated in the electric wire crimping device and conveyed are sequentially connected. Reference numeral 37 denotes a pilot hole provided in the carrier unit 36.
[0012]
These parts are formed on the connection terminals 17 by bending or cutting at dotted lines. That is, the insertion end portion 31 is folded back from both sides into a flat blade shape, the fitting end portion 32 is bent into a square tubular shape from both sides, and the core wire crimping piece portion 33 and the covering crimping piece portion 34 are each formed into a U-shape. Can be launched. Then, the connecting piece 35 and the carrier 36 are cut at the cutting section 38, and the connecting piece 35 is slightly bent backward and obliquely outward to form the protruding piece 25. Here, the connecting piece 35 is bent and cut when the electric wire 16 is crimped to the core wire crimping piece 33 and the covering crimping piece 34.
[0013]
Thus, when the connection terminal 17 to which the electric wire 16 is connected is inserted into the terminal receiving hole 12 of the housing 11, the fitting end 22 moves forward while pushing up the first locking projection 13, and the insertion end 21. Project forward from the housing 11, and the fitting end 22 fits into the front end of the terminal receiving hole 12. This prevents the connection terminal 17 from moving forward and prevents the connection terminal 17 from swinging. At this time, by restoring the flexible portion 15 of the housing 11 after bending outward, the rear portion of the fitting end 22 is locked by the first locking projection 13, and the connection terminal 17 comes out backward. Is primarily prevented. At the same time, the protruding piece 25 moves forward while being pressed by the second locking projection 14, and after returning over the second locking projection 14, is restored and locked by the second locking projection 14. Rearward escape is secondarily prevented.
[0014]
In this embodiment, since the rear part of the fitting end 22 of the connection terminal 17 is locked by the first locking projection 13, the conventionally required fitting holes, locking pieces, stabilizer parts and the like are omitted. Since the protruding piece 25 of the connection terminal 17 is locked by the second locking projection 14, a locking member such as a rear holder, which is conventionally required, can be omitted, and the manufacturing cost can be reduced. Can be.
[0015]
When the rear holder of the housing 11 is used, the protruding piece 25 may be locked to the projection of the rear holder instead of the second locking projection 14.
[0016]
In the present embodiment, since the connecting piece 35 for connecting the covering pressure-bonding piece 34 and the carrier section 36 is bent to form the protruding piece 25, waste of material removal can be omitted. It is possible to cope with a conventional mold having no new mold.
[0017]
In the embodiment described above, the connection terminal 17 for insertion is used. However, instead of the insertion end 21 and the fitting end 22, a connection terminal for reception having a terminal receiving portion may be used.
[0018]
【The invention's effect】
As described above, the connection terminal according to the present invention uses the connecting piece at the rear end of the wire crimping piece for the protruding piece that is to be locked to the protrusion of the housing, so that the locking member for double locking is omitted. In addition to this, it is possible to reduce waste of material removal and to cope with a conventional one without causing a new mold, leading to a reduction in manufacturing cost.
[Brief description of the drawings]
FIG. 1 is a sectional view of an embodiment.
FIG. 2 is a plan view of a punched conductive metal plate.
FIG. 3 is a side view of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Housing 12 Terminal accommodating hole 13 First locking projection 14 Second locking projection 17 Connection terminal 24 Coated crimping piece 25 Projecting piece 35 Connecting piece 36 Carrier

Claims (1)

The front end is provided with a connection portion to be fitted with a terminal on the other side, and the rear end is provided with an electric wire crimping portion for crimping an electric wire. In the connection terminal used in the housing to be progressively fed and housed in the housing, the boundary portion between the carrier portion and the connection piece portion is cut, and the connection piece portion is slightly outwardly bent as a projecting piece, A connection terminal which is engaged with a projection provided on the housing.

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