JP2512674Y2 - Branch circuit structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention mainly relates to a branch circuit structure used for forming a branch circuit in a wire harness of an automobile.

[Conventional technology]

In FIG. 6, in the female connector housing a, joint terminals b and b ′ in which a plurality of tab-shaped contact portions b ₁ are arranged in series are fixed, and in the male connector housing c, they are opposed to the tab-shaped contact portions b ₁ . The female terminal metal fitting d previously connected to the electric wire w is mounted in the terminal accommodating chamber c ₁ provided by
A branch circuit is formed from a specific electric wire to the other electric wire through the joint terminal b and the female terminal fitting d when the female and male connector housings a and c are connected.

[Problems to be solved by the device]

In the above prior art, it is difficult to confirm whether or not the joint terminal and the female terminal fitting are completely connected in the wire harness production line, and when the waterproof type is used, the male connector housing is waterproof. There was a problem such as having to install packing.

This invention pays attention to such a point, and provides the branch circuit structure of a structure which can detect the insertion state of a terminal metal fitting easily and can be applied to a waterproof type.

[Means for solving the problem]

In order to achieve the above object, in the present invention, a housing in which a plurality of terminal accommodating chambers are continuously arranged in parallel in a common plug accommodating chamber, and the terminal accommodating chamber is arranged from a side opposite to the plug accommodating chamber. A plurality of terminal fittings that are inserted and locked; a plug that fits into the plug housing chamber; and a short-circuit fitting that has a plurality of contact portions that are provided on the plug and that are connected to the terminal fittings. The terminal accommodating chamber has a cantilevered flexible support piece that projects from the wall surface and forms a detection gap between the terminal housing chamber and the wall surface in a state of abutting against the terminal fitting in the completely inserted state, The plug has a structure having an insertion detection bar of a terminal fitting that enters the detection gap.

〔Example〕

1 to 5, A is a synthetic resin housing, B is a female terminal fitting, and C is a short-circuit fitting.

A plurality of terminal accommodating chambers 1 are arranged side by side in the housing A, and an accommodating chamber 2 for the rubber stopper C ′ of the short-circuit metal fitting C is formed at one end of the terminal accommodating chamber 1 continuously to each terminal accommodating chamber 1. There is.

In each terminal accommodating chamber 1, an engagement step portion 1b for the female terminal fitting B is formed at the rear portion of the upper wall 1a, and a cantilevered flexible support piece 1d is urged upward on the opposing lower wall 1c. A detection gap 1e is formed between the flexible support piece 1d and the lower wall 1c, into which an insertion detection bar of a terminal fitting described later enters.
See figure).

In the short-circuit metal fitting C, male tab-shaped contact portions 3 are continuously provided corresponding to the respective terminal accommodating chambers 1 in the upper stage, and in the lower stage, the male tab-shaped contact portions 3 are paired with the male tab-shaped contact portions 3 to detect the insertion of the terminal metal fitting 4. Are lined up. A rubber plug C ′ is provided on the base 5 of the short-circuit fitting C.
Is provided. When waterproofing is not required, a plug may be formed of a synthetic resin material or the plug may be omitted.

The female terminal fitting B has a female electric contact portion B ₁ and an electric wire connecting portion B ₂ , the female electric contact portion B ₁ has an engaging shoulder portion 6 at the rear side, and an elastic contact piece 7 inside. As is well known, the electric wire connecting portion B ₂ is provided with a conductor crimping piece 8 and an insulating coating crimping piece 9 of the electric wire w, and the rubber plug D fitted around the electric wire w by the insulating coating crimping piece 9. Is fixed.

In the above structure, first the female terminal fitting B is attached to the housing
The respective terminal accommodating chambers 1 are inserted from the rear. During insertion, the female terminal fittings B is entered while depressing the flexible support piece 1d which is positioned in the insertion path downwardly, flexible support where female electrical contact portion B ₁ is beyond the engagement step 1b The piece 1d pushes the terminal fitting B upward to engage the engagement shoulder portion 6 with the engagement step portion 1b, whereby the detection gap 1e is directed forward between the flexible support piece 1d and the lower wall 1c. Will be released.

In this state, the male tab-shaped contact portion 3 of the short-circuit metal fitting C is inserted into the female electric contact portion B ₁ while the rubber plug C ′ is fitted into the accommodation chamber 2 from the front of the housing A, and the terminal metal fittings B are connected to each other. The insertion detection bar 4 enters the detection gap 1e at this time.

If any of the terminal fittings B is not completely inserted, the corresponding insertion detection bar 4 cannot enter the detection gap 1e, so that the entire short-circuit fitting C cannot be attached and the terminal fitting B The incomplete insertion state of can be detected.

In the embodiment shown in FIG. 6, the locking projections 1f formed on the flexible support piece 1d engage with the locking holes 6'of the female terminal fitting B to prevent the female terminal fitting B from coming off and to prevent the short-circuit fitting. The male tab-shaped contact portion 3 in FIG. 2 has its base portion 3 ′ embedded and supported in a synthetic resin stopper C ″, and the insertion detection bar corresponding to each male tab-shaped contact portion 3 in the synthetic resin stopper C ″. 4'is continuously provided.

In each of the above embodiments, the short-circuit fitting C is a male type, and the terminal fitting B is
Is a female type, but male and female may be reversed.

[Effect of device]

As described above, the present invention is a housing in which a plurality of terminal accommodating chambers are continuously arranged in parallel in a common plug accommodating chamber, and is inserted and locked in the terminal accommodating chamber from the side opposite to the plug accommodating chamber. A plurality of terminal fittings, a plug body fitted in the plug housing chamber, and a short-circuit fitting having a plurality of contact portions provided on the plug body and connected to the terminal fitting. The chamber has a cantilevered flexible support piece which projects from the wall surface and forms a detection gap with the wall surface in a state of contacting with the terminal fitting in the fully inserted state, and the plug body is the detection member. Since it has an insertion detection bar for the terminal fitting that enters the gap, the incomplete insertion of the terminal fitting and the short-circuit fitting provided on the plug is detected by fitting the plug into the housing. While it can be easily connected, it is also suitable for use as a waterproof type A.

[Brief description of drawings]

1 is a perspective view of an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same as above, FIG. 3 is a perspective view of a short-circuit fitting, FIG. 4 is a sectional view of a housing, and FIG. 5 is FIG. 6 is a sectional view of another embodiment, FIG. 7 is a partially cutaway plan view of a conventional example, and FIG. 8 is a sectional view taken along line VIII-VIII of the same. A ... Housing, B ... Terminal fitting, C ... Short-circuit fitting, C ', D
... rubber plug, 1 ... terminal housing, 2 ... plug housing, 1d ...
Flexible support piece, 1e ... Detection gap, 3 ... Contact portion, 4 ... Insertion detection bar.

Claims (3)

(57) [Scope of utility model registration request] 1. A housing in which a plurality of terminal accommodating chambers are continuously arranged side by side in a common stopper accommodating chamber, and a plurality of housings which are inserted into the terminal accommodating chamber from a side opposite to the stopper accommodating chamber and are engaged therewith. The terminal accommodating chamber comprises a terminal fitting, a stopper fitted into the stopper accommodating chamber, and a short-circuit fitting having a plurality of contact portions provided on the stopper and connected to the terminal fitting. A cantilevered flexible support piece that forms a detection gap with the wall surface in a state of protruding from the wall surface and in contact with the terminal fitting in the completely inserted state;
The branch circuit construction body, wherein the plug body has an insertion detection bar of a terminal fitting that enters the detection gap. 2. The branch circuit structure according to claim 1, wherein the insertion detection bar is formed of the same material as the plug body. 3. The branch circuit structure according to claim 1, wherein the plug body is formed of a rubber material.