JP2002334740A - Multi-pole connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance a life and reliability by preventing a housing from being worn and damaged. SOLUTION: A housing 14 has many terminal storing holes 27 to store connecting terminals 13, a locking arm 28 to lock the connecting terminal 13 stored in the terminal storing hole 27, an end wall 29 to lock the front end surface of the connecting terminal 13, and a latching protrusion 30 to latch a front holder 15. The front holder 15 has a lattice part entering into the inner cylindrical part 22 of the housing 14, and many pressing arms 32 extending along axial lines from the lattice part. The pressing arm 32 has a wedge-shaped part 33 to hold the back surface of the locking arm 28, a projecting bar part 34 to hold the side surface of the connecting terminal 13, a flange part 35 to lock the front end surface of the connecting terminal 13, and a latching protrusion 36 to be latched on the latching protrusion 30 of the housing 14. The latching protrusion 36 is made small, and only required numbers to secure latching force between the housing 14 and the front holder 15 are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-pole connector in which a plurality of connection terminals each having an electric wire connected to a rear portion are accommodated in a housing, and the connection terminals are held by a front holder locked at a front portion of the housing. is there.

[0002]

2. Description of the Related Art As shown in FIG. 8, for example, a conventional multi-pole connector of this type includes a housing 1 for accommodating a large number of connection terminals having electric wires connected to a rear portion thereof, and a lock at a front portion of the housing 1. And a front holder 2 for holding connection terminals. The housing 1 has a large number of terminal receiving holes for individually receiving the connection terminals, locking arms for individually locking the connection terminals stored in these terminal receiving holes, and a space 4 for receiving the outer frame 3 of the front holder 2. , Front holder 2
And a plurality of spaces 6 for receiving the plurality of partition walls 5.

[0003]

However, in the above-mentioned prior art, since the partition 5 of the front holder 2 is integrated with the outer frame 3, the front holder 2 is inserted into the housing 1 when the front holder 2 is inserted into the housing 1. Even if the front part in the insertion direction easily enters the housing 1, if the front part is forced into the housing 1, the rear part may strongly contact a part of the housing 1, and the housing 1 may be worn or damaged.

An object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide a multi-pole connector that has improved life and reliability by preventing abrasion and breakage of a housing.

[0005]

A multi-pole connector according to the present invention for achieving the above object has a housing for accommodating a large number of connection terminals having electric wires connected to a rear portion, and a multi-pole connector inserted from a front portion of the housing. A front holder for holding the connection terminals housed in the housing at a predetermined position, the housing having flexible locking arms for individually locking the housed connection terminals. Is characterized by having a pressing arm for individually pressing the locking arms toward the connection terminal side with a rear end in a direction of insertion into the housing as a free end.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is an assembled perspective view of the embodiment, and FIG. 2 is a horizontal sectional view. The multipolar connector in this embodiment accommodates a large number of connection terminals 13 in which a wire 11 and a sealing member 12 are connected at a rear portion. It comprises a housing 14 and a front holder 15 which is locked to the front part of the housing 14 and cooperates with the housing 14 to hold the individual connection terminals 13 housed in the housing 14.

FIG. 3 shows the housing 14 and the front holder 1.
5 is an exploded perspective view of FIG. 5, wherein a housing 14 is made of a synthetic resin material, and an inner cylindrical portion 22 is
Supported by These outer cylinder part 21 and inner cylinder part 22
A seal member (not shown) is arranged in a space 24 in the front surrounded by the support wall 23, and the mating housing is fitted thereto. A guide groove 25 for guiding the mating housing and a support shaft 26 for supporting a lever (not shown) are provided on the left and right side walls of the outer cylindrical portion 21.

FIG. 4 is a partially enlarged view of FIG. 2, in which a plurality of terminal receiving holes 27 for receiving the connection terminals 13 are provided in the inner cylindrical portion 22 of the housing 14 in parallel with the axis. The terminal receiving hole 27 is provided on one side wall of the terminal receiving hole 27.
7, a locking arm 28 for locking the connection terminal 13 housed in the connector terminal 7 and preventing the connection terminal 13 from coming off, an end wall 29 for locking the front end face of the connection terminal 13 and restricting the forward movement thereof, and the front holder 1
5 is provided with a locking projection 30 for locking.

The front holder 15 is made of a synthetic resin material, and has a rectangular lattice portion 31 that enters the inside of the inner cylindrical portion 22 of the housing 14, and a direction in which the lattice portion 31 is inserted into the housing 14 along the axis. A large number of pressing arms 3 extending in parallel to the opposite rear side and having a rear end as a free end
And 2.

FIG. 5 is a partially enlarged perspective view of the front holder 15 shown in FIG.
In the rear part, a wedge-shaped part 33 is provided integrally with the lattice part 31 in a cantilever manner to press the back surface of the locking arm 28.
On one surface of the pressing arm 32, there is provided a ridge 34 for pressing the side surface of the connection terminal 13, and the front end of the ridge 34 has a flange 3 for locking the front end of the connection terminal 13.
5 are formed. On the other surface of the pressing arm 32, a locking projection 36 for locking with the locking projection 30 of the housing 14 is provided.

The locking projection 3 of the front holder 15
6 need not be provided on all the pressing arms 32, but may be provided as many as necessary to secure the locking force between the housing 14 and the front holder 15.

When assembling the multipolar connector, the connection terminal 13 connecting the electric wire 11 and the seal member 12 is pushed into the terminal receiving hole 27 of the housing 14 from behind.
As a result, the connection terminal 13 advances while bending the locking arm 28 to the side, abuts on the end wall 29, and stops its advance. At the same time, the locking arm 28 is restored and locks the connection terminal 13 to prevent the connection terminal 13 from coming off. Thus, all the connection terminals 13 are housed in the housing 14.

After all the connection terminals 13 are housed in the housing 14, the front holder 15 is inserted into the inner cylindrical portion 22 of the housing 14 from the front as shown in FIG.
As shown in FIG. Thereby, each pressing arm 32 of the front holder 15 is
Moves between the connection terminal 13 and the locking projection 30 of the housing 14.

When the front holder 15 is sufficiently pushed into the housing 14, the locking projections 36 of the front holder 15 ride over the locking projections 30 of the housing 14, and are restored as shown in FIGS. And housing 1
4 and the locking projection 30 is locked. At the same time, each wedge-shaped portion 33 of the front holder 15 presses the back surface of each locking arm 28 of the housing 14 to reinforce the locking force of the locking arm 28 with respect to the connection terminal 13. The pressing arm 32
Of the connection terminal 13 presses the side surface of the connection terminal 13 to prevent the connection terminal 13 from moving laterally. Then, the flange portion 35 of the pressing arm 32 locks the front end face of the connection terminal 13, and cooperates with the end wall 29 of the housing 14 to connect the connection terminal 13.
Regulate the progress of

[0015]

As described above, in the multipolar connector according to the present invention, since the rear portion of the pressing arm of the front holder is a free end, the front holder does not come into sliding contact with the housing, and the housing is worn. The life and reliability thereof can be improved without being broken or broken.

[Brief description of the drawings]

FIG. 1 is an assembled perspective view of an embodiment.

FIG. 2 is a horizontal sectional view.

FIG. 3 is an exploded perspective view of a housing and a front holder.

FIG. 4 is a partially enlarged view of FIG. 2;

FIG. 5 is a partial perspective view showing the opposite side of the pressing arm.

FIG. 6 is an operation explanatory view.

FIG. 7 is an operation explanatory view.

FIG. 8 is an exploded perspective view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Electric wire 12 Seal member 13 Connection terminal 14 Housing 15 Front holder 27 Terminal accommodating hole 28 Locking arm 29 End wall 30, 36 Locking projection 31 Lattice part 32 Pressing arm 33 Wedge-shaped part 34 Convex part 35 Flange part

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hirose Tetsu 1-8-1, Kotakecho, Nerima-ku, Tokyo Ryosei Denso Co., Ltd. F-term (reference) 5E087 EE14 FF06 FF13 GG15 GG24 GG31 GG32 RR06 RR26

Claims (2)

[Claims] 1. A housing for accommodating a large number of connection terminals having electric wires connected to a rear portion thereof, and a front holder for inserting the electric wires from a front portion of the housing and holding the connection terminals accommodated in the housing at predetermined positions. The housing has a flexible locking arm for individually locking the accommodated connection terminals, and the front holder has the locking arm individually with a rear end in a direction of insertion into the housing being a free end. A multi-pole connector, further comprising a pressing arm for pressing the connection terminal. 2. The pressing arm includes a wedge-shaped portion that contacts the locking arm, a ridge that contacts a side surface of the connection terminal, and a flange that contacts a front end surface of the connection terminal.
The multi-pole connector according to claim 1, further comprising a locking portion that locks the locking portion of the housing.