JPH10289746A - Female connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a female connector in which the mis-insertion of a tab into a mold rapping hole for lance molding is surely prevented even if it exists. SOLUTION: A lance 35 provided in a female housing 11 is provided at a parting position from a terminal metal fitting. specifically, the main body portion 36 of the lance 35 and the connection portion 22 of the terminal metal fitting 12 face each other via a gap 39, and a lance protrusion portion 37 is contained in the gap 39 so as to face an engage protrusion portion 24 in a terminal insertion direction. Accordingly, the mold rapping hole 40 of a metal mold for molding a recessed portion 34 and the lance 35 is positioned in the front face of the female housing 11 parting from the terminal metal fitting 12. Thereby, the mis-insertion of a male tab 50 into the mold rapping hole 40 is not allowed, even if the male tab 50 is dislocated slightly from a tab insertion hole 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a female connector.

[0002]

2. Description of the Related Art Conventionally, as this type of female connector, the one shown in FIG. 6 or FIG. 7 is known. The female connector 1 has a female terminal fitting 3 inside a connector housing 2.
The female terminal fitting 3 is retained in the engagement hole 4 formed on the bottom surface of the female terminal fitting 3 by engaging a lance 5 integrally formed in the connector housing 2.

[0003]

However, in this type of connector housing 2, not only a tab insertion hole 6 for inserting a tab 8 into the front surface as shown in FIG. A punching hole 7 for pulling out a molding die for molding is inevitably generated. Then, if the alignment of both connectors is insufficient when mating with the male connector,
The tip of the tab 8 enters into the mold release hole 7, and the tab 8 is forcibly pressed into the narrow portion 7A as shown by a two-dot chain line in FIG. Was sometimes

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and even if there is a lance forming die hole, a female connector can be reliably prevented from being erroneously inserted into the hole. The purpose is to provide.

[0005]

[Means for Solving the Problems]

<Invention of Claim 1> According to the invention of Claim 1, a female terminal fitting is received and housed in a connector housing by a lance integrally formed therein, and a mating tab is inserted through a tab insertion hole formed in the front surface of the connector housing. In the connector, the lance can be inserted into the connection portion of the female terminal fitting, the lance is arranged at a position distant from the connection portion, and the engagement projection is projected from the connection portion. The feature is that the female terminal fitting is prevented from coming off by being engaged.

<Invention of claim 2> According to the invention of claim 2, in the connector according to claim 1, the front surface of the connector housing is divided into a tab insertion hole and a mold release hole for forming a lance. The feature is that the partition wall for it is provided.

[0007]

Actions and effects of the present invention

According to the first aspect of the present invention, since the engaging projection projecting from the connecting portion of the terminal fitting is provided as the engaging portion with the lance, the lance can be separated from the connecting portion and the lance can be separated. The die-cutting holes to be formed are arranged apart from the tab insertion holes. Thus, even if the mating tab is slightly displaced from the tab insertion hole, the tab is prevented from being erroneously inserted into the mold release hole.

According to the second aspect of the present invention, even if the tab is shifted to the side of the mold release hole, the tab abuts against the partition wall and erroneous insertion into the mold release hole is reliably prevented. It is.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, a female connector 10 of this embodiment includes a female connector housing 11 (hereinafter, referred to as a “female housing 11”) and a plurality of female terminal fittings 12 (hereinafter, referred to as “female housing”). ,
"Terminal fitting 12").

First, the terminal fitting 12 will be described.
As shown in FIG. 2, the electric wire D to be the target of the terminal fitting 12 has the core D <b> 2 exposed by stripping off the insulating coating D <b> 1 at the distal end. The terminal fitting 12 is an insulation barrel 20 that is crimped to the outer peripheral portion of the insulating coating D1.
And a wire barrel 21 crimped to the core wire portion,
Further, a connection portion 22 is provided in front of the wire barrel 21.

The connecting portion 22 is formed in a rectangular cylindrical shape, and a male tab 50 (see FIGS. 1 and 2) of a mating terminal fitting is inserted from an open portion at the front end of the rectangular tube to enable electrical connection. . On one side edge of the ceiling surface of the connection portion 22, an engagement protrusion 24 according to the present invention is provided to protrude. The engaging projection 24 is formed by cutting out the ceiling plate 23 (see FIG. 2), and the side plate 25 is formed.
It is flush. The engaging protrusion 24 has a trapezoidal shape as a whole, and forms a tapered portion 24A whose front side is inclined rearward and rises rearward, and serves as an engagement portion 24B whose rear side rises vertically. I have. And
A lance 35 described later provided on the female housing 11 is slidably brought into contact with the tapered portion 24A, is bent and returned, engages with the engaging portion 24B, and the terminal fitting 12 is prevented from coming off (see FIG. 1).

On the other hand, the female housing 11 is integrally formed of a synthetic resin material. As shown in FIGS. 1, 3, and 4, a plurality of cavities 31 into which the terminal fittings 12 are inserted are arranged in parallel. It is in a state and extends along the front-back direction. The cavity 31 is open to the rear end face of the female housing 11, and when the terminal fitting 12 is inserted therefrom, as shown in FIG. 1, the tip of the terminal fitting 12 abuts against the front wall 32 of the female housing 11 and is positioned. You. A tab insertion hole 33 for inserting the male tab 50 is opened at a position corresponding to each cavity 31 in the front wall 32. A guide inclined surface 33 </ b> A for guiding the male tab 50 into the tab insertion hole 33 is provided at an outer edge of the tab insertion hole 33.

At the front of the cavity 31, there is provided a recess 34 whose ceiling surface is raised one step. Inside the recess 34, a lance 35 for preventing the terminal fitting 12 from coming off is provided. The lance 35 is provided on the front surface 34 of the recess 34.
A cantilever-shaped main part 36 extending forward from A is provided with a lance protrusion 37 protruding toward the terminal fitting 12, and this lance protrusion 37 is engaged with the terminal fitting 12. 24. A space 3 for bending the lance 35 is provided between the lance 35 and the ceiling surface of the recess 34.
8 is secured, and a lance 35 is provided in this space 38.
Is bent, the engagement between the lance projection 37 and the engagement projection 24 is released, and the terminal fitting 12 can be pulled out of the cavity 31. In order to bend the lance 35, a later-described die cutting hole 40 formed in the front wall 32 of the female housing 11 is formed.
From a tool (not shown).

The lance 35 is located away from the terminal fitting 12 as described in the claims of the present application. Specifically, the main part 3 of the lance 35
6 and the connecting portion 22 of the terminal fitting 12 face each other via a gap 39 (see FIG. 1), and the lance projection 37 is accommodated in the gap 39 and faces the engaging projection 24 in the terminal insertion direction. ing. Accordingly, the mold release hole 40 for forming the concave portion 34 and the lance 35 is also arranged on the front surface of the female housing 11 away from the tab insertion hole 33. A partition wall 41 according to the present invention is formed between the punching hole 40 and the tab insertion hole 33. As a result, the tab insertion hole 33 and the die-cutting hole 40, which are communicated with each other in the conventional connector, are separated (see FIGS. 4 and 7 for comparison).
The partition wall 41 also has a guide inclined surface 33A for guiding the male tab 50 into the tab insertion hole 33.

As shown in FIGS. 3 and 4, the lance 35 engages the engaging projection 24 of the terminal fitting 12 with the cavity 31 so that the engaging projection 24 abuts at the center in the width direction. 24 is shifted laterally to the side corresponding to 24.

As shown in FIG. 1, the mating connector 51 includes a hood portion 52 into which the female connector 10 can be fitted and inserted, and a male tab 50 of a male terminal fitting protruding from the inner surface thereof. It has a configuration. Also, male tab 50
As shown in FIG. 2, the front end of each of the corners is chamfered to facilitate insertion into the tab insertion hole 33.

Next, the operation and effect of the present embodiment configured as described above will be specifically described. To accommodate the terminal fitting 12 in the female housing 11, the connection part 22 side of the terminal fitting 12 is fitted into the cavity 31 and pushed in. In the process of being pushed in, the tapered portion 24A of the engagement protrusion 24 is
The lance 35 is slid into contact with the rear end side, and the lance 35 is bent toward the space 38. Further, when the terminal fitting 12 is pushed into the normal accommodation position, the engaging projection 24 is positioned in front of the lance projection 37, and the lance 35 is Restore. As a result, the locking portion 24B of the engaging projection 24 is engaged with the front portion of the lance projection 37, and the terminal fitting 12 is prevented from falling off and is held at the regular accommodation position.

In order to connect the female connector 10 with the mating connector 51, the front surface of the female connector 10 faces the open portion of the hood 52 of the mating connector 51 and is pushed into the inside. Then, the female housing 11 is guided by the hood portion 52, and the tab insertion hole 33 and the male tab 50 face each other. However, for example, due to variations in fitting accuracy between the hood portion 52 and the female connector 10, the tab insertion holes 33 are not provided.
May face each other at a position shifted from the male tab 50.

Here, in the female connector 10 of the present embodiment, the engagement protrusion 2 protruding from the connection portion 22 of the terminal fitting 12 is provided.
By forming the engagement portion 4 with the lance 35, the lance 35 can be arranged farther from the terminal fitting 12 than the conventional one (refer to FIGS. 1 and 6), and the tab insertion hole is accordingly formed. The structure has a structure in which the die 33 and the punching hole 40 are separated from each other. Thereby, even if the male tab 50 is slightly displaced from the tab insertion hole 33, the male tab 50 is not erroneously inserted into the mold release hole 40. Further, in the present embodiment, since the tab insertion hole 33 and the mold release hole 40 are separated by the partition wall 41, even if the male tab 50 is pushed in while being shifted to the mold release hole 40 side, the male tab 50 is pressed. Abuts against the partition wall 41, and erroneous insertion into the mold release hole 40 can be reliably prevented. In addition, since the guide slope 33 </ b> A is formed in the partition 41, the male tab 50 is automatically guided to the tab insertion hole 33. And
The male tab 50 is inserted into the connection part 22 of the terminal fitting 12 through the tab insertion hole 33, and the terminal fitting 12 is electrically connected to the mating terminal fitting.

As described above, the female connector 10 of the present embodiment
According to this, it is possible to prevent the male tab 50 from being erroneously inserted into the mold release hole 40, and the fitting operation of the connectors 10 and 51 becomes easy. Further, according to the locking structure between the terminal fitting 12 and the lance 35 of the present embodiment, the lance projection 3 is attached to the terminal fitting 12.
Since it is not necessary to make a large hole for inserting the terminal 7, the strength of the terminal fitting 12 can be increased, and the lance projection 37 is not inserted into the terminal fitting 12, so that the lance 35 is not inserted.
It is not necessary to adjust the width of the lance to the terminal fitting 12, and the effect of increasing the degree of freedom in the design of the lance can be obtained.

<Second Embodiment> In the present embodiment, the structure of the locking projection of the terminal fitting is different from that of the first embodiment, and the other points are the same. The terminal fitting 60 of the present embodiment is shown in FIG. 5, and has a structure in which one side plate 61 and the ceiling plate 62 forming the connection part 22 are butted at a corner on the upper side of the connection part 22 in the figure. The engagement projection 63 is formed by bending a metal plate extending from the tip of the side plate 61. More specifically, the engagement protrusion 63 is formed by bending a metal plate extending flush with the side plate 61 above the ceiling plate 62, and furthermore, bending the distal end side toward the ceiling wall 62 side to hit the ceiling wall 62. It has a structure, and its cross-sectional shape is a square U-shape whose opening is closed by a ceiling wall 62. The front end face of the engaging projection 63 is a tapered face 63A approaching rearward, and the rear end face is an engaging face 63B rising vertically. Further, a notch 65 corresponding to the engaging protrusion 63 is formed at the tip of the ceiling wall 62, and a continuous portion of the engaging protrusion 63 with the side wall 61 is fitted into the notch 64. .

When the terminal fitting 60 is pushed into the cavity 31 of the female housing 11, the tapered surface 63 A of the engaging projection 63 slides against the rear end of the lance projection 37 and the lance 35.
Is bent toward the space 38, and when the terminal fitting 60 reaches the regular accommodation position, the lance 35 is restored, and the locking portion 63B of the engaging projection 63 engages with the front portion of the lance projection 37. Here, since the engagement protrusion 63 of the present embodiment has a bent structure of a metal plate, the strength is high, and the locking force between the engagement protrusion 63 and the lance 35 is high.

<Other Embodiments> The present invention is not limited to the above embodiments. For example, the following embodiments are also included in the technical scope of the present invention.
In addition to the following, various changes can be made without departing from the scope of the invention.

(1) Terminal fitting 12 of the first embodiment
Although the engagement protrusions 24 are provided on one side edge of the terminal fitting 12, a structure having engagement protrusions on both side edges of the terminal fitting 12 may be employed.

(2) The engaging projection 24 can also be used as a stabilizer for preventing the terminal fitting 12 from being inserted into the cavity 31 in the opposite direction.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a connector according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a terminal fitting.

FIG. 3 is a rear view of the female housing.

FIG. 4 is a front view of the female housing.

FIG. 5 is a perspective view showing a terminal fitting of a second embodiment.

FIG. 6 is a side sectional view of a conventional connector.

FIG. 7 is a front perspective view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Female connector 11 ... Connector housing 12 ... Female terminal fitting 22 ... Connection part 24 ... Engagement protrusion 33 ... Tab insertion hole 35 ... Lance 40 ... Die-release hole 41 ... Partition wall 50 ... Male tab 63 ... Engagement protrusion Department

Claims (2)

[Claims] 1. A female terminal fitting is housed in a connector housing in a state of being prevented from falling off by a lance integrally formed, and a mating tab is connected to the female terminal fitting through a tab insertion hole formed in a front surface of the connector housing. In the female connector which can be inserted into the connecting portion, the lance is arranged at a position away from the connecting portion, and an engaging protrusion is projected from the connecting portion, and the engaging protrusion and the lance are engaged. A female connector, wherein the female terminal fitting is prevented from coming off. 2. The connector housing according to claim 1, wherein a partition wall is provided on a front surface of the connector housing to separate the tab insertion hole from a die release hole forming the lance. Female connector.