JPH08185918A - Connection terminal - Google Patents

Abstract

PURPOSE: To reduce the production cost of a connection terminal. CONSTITUTION: The terminal housing hole 12 of a connector housing 11 has the first and second locking projections 13 and 14, and the projection 13 is positioned at the flexible section 15 of the housing 11. A connection terminal 17 housed in the hole 12 is formed out of a conductive metal plate with a drawing process, a bending process, a cutting process or the like, and is provided with an insertion end 21, a locking end 22, a conductor crimp piece 23, a cover crimp piece 24 and a projection piece 25 in order. In this case, the projection piece 25 is extended back from the lower side of the piece 24 and slightly bent externally. Furthermore, the rear section of the end 22 is locked by a locking projection 13, and the projection piece 25 is locked by the second locking projection 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting terminal provided with a projecting piece for engaging with an engaging portion of a housing of a connector at a rear portion of an electric wire crimping portion.

[0002]

2. Description of the Related Art Conventionally, when a connection terminal is housed in a housing of a connector for use, the connection terminal is locked by a locking mechanism provided so as not to come out of the housing. In particular, since the connection terminals used for wiring of automobiles and the like are small and easily come out of the housing, the locking mechanism is often provided in duplicate.

For example, as shown in the partial sectional view of FIG.
The terminal housing hole 2 formed in the housing 1 of the connector houses the connection terminal 5 in which the wire 3 is connected to the wire crimping piece 4. The connection terminal 5 has a locking piece 7a locked by the locking portion 1a of the housing 1 fitted in the fitting hole 6 to prevent the connection terminal 5 from coming out backward. Further, the rear holder 8 is engaged with the rear end of the housing 1, and the rear end of the wire crimping piece 4 of the connection terminal 5 is locked by the projecting piece 8a of the rear holder 8 so that the force from the mating terminal from the front side is applied. Even if it is added, it is prevented from slipping out backward.

In some cases, the stabilizer portion 9 may be locked by a flexible lance instead of the wire crimping piece 4 of the connection terminal 5.

[0005]

However, in the above-mentioned conventional example, in order to lock the connection terminal 5 by the locking portion 1a of the housing 1 of the connector, the fitting hole 6, the locking piece 7, and the stabilizer portion 9 are provided. And the like, the rear holder 8 is required to lock the wire crimping piece 4 or the stabilizer portion 9, and the wire crimping piece 4 is securely locked by the protruding piece 8a of the rear holder 8. Since it needs to be bent accurately as described above, there are problems in that the manufacturing process is complicated and the processing is complicated, and it is difficult to reduce the manufacturing cost.

An object of the present invention is to solve the above-mentioned problems and to provide a connection terminal capable of reducing the manufacturing cost by simply providing the protruding piece.

[0007]

To achieve the above object, a connection terminal according to the present invention is provided with a wire crimping portion for crimping an electric wire at a rear end, which is provided with a connecting portion for fitting a mating terminal at a front end. In the connection terminal provided with, a protruding piece for engaging with the housing is protruded rearward at the lower portion of the wire crimping portion, and is bent outward slightly.

[0008]

In the connection terminal of the present invention having the above-mentioned structure, since the projecting piece for engaging with the housing is bent at the lower part of the wire crimping portion and bent slightly downward, when it is housed in the housing, The protruding piece is locked by the locking portion of the housing or the locking portion of the rear holder.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is a partial cross-sectional view of the embodiment, in which a housing 11 of a connector is provided with a terminal accommodating hole 12, and an upper wall of the terminal accommodating hole 12 is provided with a first locking projection 13. At the same time, the second locking projection 14 is provided on the lower wall. The first locking protrusion 13 is provided so as to project from the flexible portion 15 of the housing 11 and is displaceable upward. Housing 11 formed in this way
The connection terminal 1 having the electric wire 16 connected to the terminal receiving hole 12 of
7 are accommodated.

The connection terminal 17 is punched from a conductive metal plate,
Bending, cutting, embossing, or the like, for example, is formed for insertion, and is inserted into an insertion end 21 to be inserted into a mating receiving terminal (not shown) and a terminal accommodating hole 12 of the housing 11 for connection. Fitting end 2 that stabilizes the terminal 17
2 and the core wire crimping piece 23 obtained by crimping the core wire 16a of the electric wire 16
And a coated crimping piece 24 to which the coating 16b of the electric wire 16 is crimped are sequentially connected and provided. A projecting piece 25 projecting rearward is provided at the lower rear end of the cover crimping piece 24 so as to be bent outward.

FIG. 2 is a plan view of a conductive metal plate punched to form the above-mentioned connection terminal 17, in which an insertion end portion 31 formed at the insertion end 21 and a fitting end. 22
The fitting end portion 32 formed on the core wire crimping piece 23, the core wire crimping piece portion 33 formed on the core wire crimping piece 23, the covering crimping piece portion 34 formed on the covering crimping piece 24, and the connecting piece formed on the protruding piece 25. A portion 35 and a carrier portion 36 that is incorporated in the electric wire crimping device and conveyed are provided so as to be sequentially connected. 3
Reference numeral 7 is a pilot hole provided in the carrier portion 36.

Each of these parts is bent or cut along the dotted line to form the connection terminal 17. 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 from both sides into a rectangular tube shape, and the core wire crimping piece portion 33 and the covering crimping piece portion 34 are respectively U-shaped. Can be launched. Then, the connecting piece portion 35 and the carrier portion 36 are cut at the cutting portion 37, and the connecting piece portion 35 is gently bent rearward and 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 portion 33 and the covering crimping piece portion 34.

As described above, when the connecting terminal 17 to which the electric wire 16 is connected is inserted into the terminal accommodating hole 12 of the housing 11, the fitting end 22 moves forward while pushing up the first locking projection 13 and is inserted. The receiving end 21 projects forward from the housing 11, and the fitting end 22 fits into the front end portion of the terminal accommodating hole 12. This prevents the connection terminal 17 from moving forward and prevents the connection terminal 17 from swinging. At this time, the flexible portion 15 of the housing 11 is restored after being bent outward, so that the rear portion of the fitting end 22 is locked by the first locking projection 13 and the connection terminal 17 is pulled out rearward. Is temporarily prevented. At the same time, the protruding piece 25 is
Of the connecting terminal 17 is moved forward while being pressed by the locking projection 14 of the second terminal, and is restored after it has passed over the second locking projection 14 and is locked by the second locking projection 14. To be prevented.

In this embodiment, the fitting end 2 of the connection terminal 17 is
Since the rear part of 2 is locked by the first locking projection 13, the fitting hole, locking piece, stabilizer part, etc., which are conventionally required, can be omitted, and the projecting piece 25 of the connection terminal 17 can be removed. Since it is locked by the two locking protrusions 14, a locking member such as a rear holder which is conventionally required can be omitted, and the manufacturing cost can be reduced.

When the rear holder is used, the second
The locking projection 14 may be omitted, and the protruding piece 25 may be locked to the locking portion of the rear holder.

In this embodiment, the projecting piece 25 is formed by bending the connecting piece portion 35 connecting the coated crimping piece portion 34 and the carrier portion 36.
Since it is possible to eliminate the waste of material taking, it is possible to cope with the conventional one having the connecting piece portion 35 without causing a new mold, and it is possible to reduce the manufacturing cost. .

Although the connection terminal 17 for insertion is used in the above-mentioned embodiment, the insertion end 21 and the fitting end 2 thereof are used.
Instead of 2, a receiving connection terminal having a terminal receiving portion may be used.

[0018]

As described above, in the connection terminal according to the present invention, since the projecting piece for locking the locking portion of the housing is provided at the rear end of the wire crimping piece, the locking member for double locking is provided. In addition to being able to omit it, it is possible to reduce the waste of material removal, and it is possible to cope with the conventional one without raising a new mold, and it is possible to reduce the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a sectional view of an example.

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]

 Reference Signs List 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 coupling piece part 36 carrier part

Claims (2)

[Claims] 1. A connection terminal having a connecting portion at a front end for fitting with a mating terminal and an electric wire crimping portion for crimping an electric wire at a rear end, which is locked to a housing at a lower portion of the electric wire crimping portion. The connecting terminal is characterized in that the protruding piece for protruding is protruded rearward and is bent outwards. 2. The connection terminal according to claim 1, wherein the protruding piece is formed by using a connecting portion that connects the carrier portion and the wire crimping portion.