JPS59228380A - Device for engaging terminal in connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a terminal locking device in a connector.

For example, as shown in Japanese Utility Model Application Publication No. 55-170772, a terminal inserted into a connector housing is fitted with a rear retainer to the connector housing to prevent the terminal from coming off. It is said that

FIGS. 1 and 2 show a conventional example, in which terminal housing chambers 1 are arranged horizontally in an orderly manner in two stages, upper and lower, in a connector housing A. After all the terminals B are inserted into the terminal storage chamber, the rear retainer C is inserted into the rear communication chamber 3.
are fitted and fixed by the locking hole 4 and projection 5,
The terminal retainer 6 is in contact with the terminal B to prevent it from being pulled out.

By the way, in the above-mentioned known technology, since the plurality of terminal accommodating chambers 1 in the connector housing A are arranged side by side in an orderly manner, the rear retainer C can be easily designed mainly in a flat plate shape, and the rear retainer C can be easily designed to have a flat plate shape. Installation work is also easy.

However, the terminal housing chambers were not arranged neatly in one direction.
For example, in cases where terminal housing chambers for 4 to 6 poles are provided in an irregular pinch in a nearly square end face shape, such as a relay connector that fits into a relay, a rear retainer with a conventional flat plate structure is used. cannot be used.

The present invention has been made with attention to the above-mentioned points, and its purpose is to reliably prevent terminals from coming off in connectors in which terminal accommodation chambers are provided at irregular pitches. To achieve this purpose, a communicating chamber for a rear retainer for the terminals is formed at the rear of a connector housing having a plurality of terminal chambers, and the rear retainer is connected to a partially cut frame body. The mill has a structure in which a plurality of receiving grooves for the electric wires are provided toward the inside and a locking member for the connector housing is provided, and the edge portion of the receiving groove engages with the wire connecting portion of the terminal.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows a connector housing A+ for a relay.

A2, A3, A<, 4, 5 or 6 terminal receiving chambers 1 are provided with irregular pitches, and a locking arm 8 for the relay is provided.

As shown in FIG. 4, each terminal accommodating chamber 1 is provided with a flexible locking piece 2 for the terminal, and a rear retainer accommodating chamber 9 is provided in communication with the rear part of each connector housing. A locking hole 10a is formed in the peripheral wall 10 of 9.

In FIG. 5, two types of rear retainers are shown. Fifth
Figure (A) shows the six-pole connector housing A3 and the corresponding rear retainer C1, and shows the opposing side 11a of the U-shaped frame 11 with a portion cut away.

Storage groove 1 for electric wire 12 connected to terminal B inside 11b
1a+ and 11b+, and one compartment side lid is provided protruding from the common side 11C to accommodate the two electric wires 12 of the two terminals B inserted into the two terminal accommodating chambers 1, respectively. Relatively deep housing grooves L1c+, 1lc for housing together
2 is formed.

Note that 11e is a deformable surface for preventing reverse fitting, and 11f is a locking arm.

FIG. 5(b) shows the five-pole connector housing A2 and the corresponding rear retainer C2, and shows the opposing side 12a of the U-shaped frame 12 with a portion cut away.

Storage of electric wires 12 inside 12b a12a+, L2azl
zb+, and two partition sides 12d and 12e are provided protruding from the common side 12C to form both partition side sides 11d and l.
A relatively deep accommodation groove 12C+ for accommodating two electric wires is formed between le.

Note that 12f is a locking arm.

As shown in FIG. 6, the edges of the wire receiving grooves in the rear retainers CI and C2 serve as retaining portions X for the wire connecting portions 6 of the terminals B to hold the terminals.

In the embodiment shown in FIG. 7, a rear retainer C3 for the four-pole connector housing A1 is shown, and a dividing side 13d is provided protruding from the common side 13C of the U-shaped frame 13. Comparatively deep accommodation grooves 13c+, 1 for accommodating two electric wires between the opposing sides 13at13b, respectively.
Form 3C2.

Locking protrusions 13e are provided at the tips of the opposing sides 13a, 13b and the partition side 13d, and a locking arm 13f is provided at the common side 13C.

During use, as shown in FIG. 7(b), after inserting two electric wires into the receiving grooves 13C+ and 13C2, the receiving chamber 9 is tilted with the locking protrusion 13e first.
the locking protrusion 13G is engaged with the locking hole 10b, and then the opposite side is pushed in to engage the locking arm 13f with the locking hole 10a.

Since the present invention is constructed as described above, a plurality of terminal accommodating chambers are arranged side by side in an orderly manner. This can reliably prevent the rear part from falling out.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing the rear terminal holding mechanism of a conventional connector, Fig. 2 is a cross-sectional view of the same as the above in an assembled state, and Figs. A perspective view of the target connector, Figure 4 is a sectional view of the same as above, and Figure 5 (A)
(B) is a perspective view showing the terminal locking device according to the present invention, FIG. 6 is a cross-sectional view of the same as above, and FIGS. 7 (A), (B), () and X) are exploded views of other embodiments. They are a perspective view, a perspective view of a joining process, and a partial sectional view of a locking process. A+, A2, A3, A4... Connector housing, 1... Terminal accommodation chamber, 9... Rear retainer accommodation chamber, C+. C2, C3... Rear retainer.

Claims (1)

[Claims] forming a communicating housing chamber for a rear retainer for the terminals at the rear of the connector housing having a plurality of terminal housing chambers;
The rear retainer consists of a partially cut-out frame body with a plurality of housing grooves for the electric wires directed inward, and a locking member for the connector housing. A locking device for a terminal in a connector, characterized in that it locks into a wire connection portion.