JP3268944B2 - Connector with rear holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector with a rear holder in which a rear holder having a terminal insertion hole at a rear portion of a housing is engaged in order to prevent a connection terminal accommodated in a housing of the connector from coming out backward. is there.

[0002]

2. Description of the Related Art Conventionally, as this kind of connector with a rear holder, there is known a connector in which a housing 2 having a terminal receiving hole 1 and a rear holder 4 having a terminal insertion hole 3 are manufactured as separate members as shown in FIG. ing. The housing 2 and the rear holder 4 are connected to the rear holder 4 as shown in FIG.
Is engaged with the rear end of the housing 2 in a so-called temporary engagement state, the connection terminal to which the electric wire 5 is connected is inserted into the terminal receiving hole 1 through the terminal insertion hole 3, and then the rear holder 5 is pushed in the direction A. The rear holder 4 prevents the inserted connection terminal from being pulled out rearward in the fully engaged state.

[0003]

However, in the above-described conventional example, since the housing 2 and the rear holder 4 are manufactured as separate members, there is inconvenience such as loss of parts during assembly and repair, and the like. There is a problem that the number increases.

An object of the present invention is to solve the above-mentioned problems and to provide a connector with a rear holder which is easy to handle by integrating the rear holder with a housing.

[0005]

A connector with a rear holder according to the present invention for achieving the above object has a housing having a terminal accommodating hole for inserting and accommodating a connection terminal from the rear, and is located at the rear of the housing. A rear holder having a terminal insertion hole and a terminal locking piece, wherein the rear holder is engageable with the housing at a first position during temporary engagement and a second position during full engagement; In the position 1, the connection terminal is inserted into the terminal receiving hole of the housing via the terminal insertion hole, and after the connection terminal is inserted into the terminal receiving hole, the rear holder is moved to the second position. A connector with a rear holder that locks the terminal locking piece to a part of the connection terminal to prevent the connection terminal from slipping out, wherein the rear holder has a flexible connection portion in the housing. With coupling and, wherein said terminal insertion hole said at temporary engagement is integrally molded so as to be located behind the terminal accommodating hole of the housing.

[0006]

In the connector with a rear holder having the above-described structure, the rear holder is integrally formed on the housing via the flexible connecting portion, and the terminal insertion hole of the rear holder is arranged behind the terminal receiving hole of the housing. At the time of temporary locking, the connection terminal is inserted into the terminal receiving hole of the housing through the terminal insertion hole of the rear holder, and then, when the rear holder is moved to the full engagement position, the rear holder locks the connection terminal by the terminal locking piece.

[0007]

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 longitudinal sectional view of an embodiment, in which a housing 11 made of a synthetic resin material has, for example, a plurality of terminal receiving holes 12, and the terminal 1 has an electric wire 1.
3 and a connection terminal 15 having a seal member 14 are inserted. On the peripheral wall of the terminal accommodating hole 12, a stopper 16 for locking the locking portion 15a of the connection terminal 15 to prevent the connection terminal 15 from slipping forward, and a locking portion 15b for the connection terminal 15
And a flexible locking arm 17 for locking the connection terminal 15 to prevent the connection terminal 15 from slipping backward. In addition, connection terminal 1
5 has an insertion end 15c inserted into the mating connection terminal.
The core wire 13a of the electric wire 13 is crimped to the core wire crimping portion 15d at the rear part of the connection terminal 15, and the sheath crimping portion 15e and the trunk portion 14 of the sealing member 14 together with the sheath 13b of the electric wire 13.
a is crimped.

[0008] Engagement projections 18 and 19 are provided on the upper and lower portions of the rear portion of the housing 11, and flexible hinge portions 20 and 21 having an appropriate length are formed integrally with the housing 11. , These hinge parts 20, 21
, A rear holder 22 as a rear holder is integrally connected. The rear holder 22 is engaged with a rear portion of the housing 11 to connect the connection terminals 1 housed in the housing 11.
This is for preventing the rearward escape of the fifth member 5 together with the flexible locking arm 17.

The rear holder 22 has terminal insertion holes 23 through which the connection terminals 15 to which the electric wires 13 are connected, and engagement projections 18 and 1 when the rear holder 22 is engaged with the housing 11.
9 and fitting holes 24 and 25 for fixing the rear holder 22 to the housing 11, and upper and lower guides having an inclined surface 26a for guiding the rear holder 22 to the engaging position when the rear holder 22 is engaged with the housing 11. Of the connection terminal 15 when the rear holder 22 is engaged with the housing 11 to prevent the connection terminal 15 from being pulled out rearward.

[0010] Here, the rear holder 22 is used to insert the connection terminal 15 to which the electric wire 13 is connected into the terminal insertion hole 23 during molding.
It is formed so as to be at a position where it can be inserted into the terminal receiving hole 12 through the hole. The guide projection 26 is provided in the terminal receiving hole 1.
When the rear holder 22 is pushed in parallel to the housing 11 in the axial direction, the rear holder 22 abuts against the rear end wall of the large-diameter portion 12b of the housing 11 and is positioned as it is. 11 are not engaged. In order to engage the rear holder 22 with the housing 11, the rear holder 22 is slightly pushed in the obliquely upward direction B and then pushed in parallel to the axial direction.

With such a configuration, when the connection terminal 15 to which the electric wire 13 is connected is inserted into the terminal accommodating hole 12 through the terminal insertion hole 23 of the rear holder 22, the locking projection 15b of the connection terminal 15 is The connection terminal 15 is moved forward while pushing upward, and the locking projection 15a of the connection terminal 15 abuts against the stopper 16 so that the movement of the connection terminal 15 to the front is stopped.
5 is prevented from slipping forward. At the same time, the flexible locking arm 17 is restored and locked to the locking projection 15b, and the connection terminal 1
5 is prevented from coming out backward. Further, the seal member 14 is fitted into the large diameter portion 12b of the terminal receiving hole 12 to prevent water or the like from entering the terminal receiving hole 12 from the outside.

Thereafter, when the rear holder 22 is pushed toward the housing 11 while being slightly shifted in the direction B, the inclined surface 26 a of the guide projection 26 is moved to the large diameter portion 12 of the terminal receiving hole 12.
2B, the rear holder 22 moves toward the housing 11 while being guided further in the direction B, and the engaging projections 18 and 19 fit into the respective fitting holes 24 and 25 as shown in FIG. Then, the rear holder 22 is completely engaged with the housing 11. At this time, the hinge portions 20 and 21 are largely bent, and the locking projection 27 of the rear holder 22 is
5 is locked, so that the connection terminal 15 is prevented from coming out backward together with the flexible locking arm 17.

In this embodiment, since the rear holder 22 is formed integrally with the rear end of the housing 11 via the flexible hinge portions 20 and 21, the terminal insertion holes 23 of the rear holder 22 are formed.
Through this, the operation of inserting the connection terminal 15 into the terminal receiving hole 12 and engaging the rear holder 22 with the housing 11 can be easily achieved.

In the above-described embodiment, after the connection terminal 15 is inserted into the rear holder, the rear holder is pushed in the housing direction to lock the connection terminal 15, but the operation direction of the rear holder is in the axial direction of the housing. May be set only in a direction orthogonal to.

If the connector is disposable and will not be disassembled again, the hinge portions 20, 21 may be cut off after the connector is assembled.

[0016]

As described above, in the connector with the rear holder according to the present invention, since the rear holder is integrally formed with the housing via the flexible connecting portion, the operation of inserting the connection terminal into the terminal receiving hole and the operation of attaching the rear holder to the housing are performed. The engaging operation can be easily performed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment.

FIG. 2 is an operation explanatory view.

FIG. 3 is an exploded perspective view of a conventional example.

FIG. 4 is an assembled perspective view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Housing 12 Terminal accommodation hole 13 Electric wire 15 Connection terminal 20 and 21 Hinge part 22 Rear holder 23 Terminal insertion hole 18 and 19 Locking projection

Continuation of the front page (56) References JP-A-4-315779 (JP, A) JP-A-59-90179 (JP, U) JP-A-3-119968 (JP, U) JP-A-58-162579 (JP , U) (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 13/42-13/652

Claims (2)

(57) [Claims] A housing having a terminal accommodating hole for inserting and accommodating a connection terminal from the rear;
A rear holder having a terminal insertion hole and a terminal locking piece , wherein the rear holder is temporarily engaged with the housing.
At the first position at the time of engagement and the second position at the time of full engagement.
In the first position, the connecting terminal is positioned forward.
The terminal receiving hole of the housing through the terminal insertion hole
After the connection terminal is inserted into the terminal receiving hole.
Moving the rear holder to the second position,
In the rear holder with the connector to prevent the locking piece coming off of the engagement locks the connection terminal portion of the connecting terminal, the rear holder via the flexible coupling portion in said housing communicating
At the same time as the temporary engagement,
A connector with a rear holder, which is integrally formed so as to be located behind a terminal receiving hole of a housing . 2. The connector with a rear holder according to claim 1, wherein the rear holder is formed at a position where the connection terminal to which the electric wire is connected can be inserted into the terminal receiving hole through the terminal insertion hole.