JPS61232582A - Housing for electric 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] [Industrial Application Field] The present invention provides a durable hinge arm that is provided with a rear holder that double prevents terminals from coming off backward, and the rear holder has flexible elasticity. The present invention relates to an electrical connector housing which is connected to the housing with a rear holder and has a structure in which the mounting state of a rear holder can be seen at a glance.

[Conventional technology]

In general, an electrical connector has a structure in which a flexible locking arm is provided in an internal chamber of an insulating housing, and an electrical connector is engaged with the arm to prevent it from being pulled out later. However, the locking arm may be deformed or damaged by, for example, pulling the connecting wire, and may be pulled out. To prevent this, for example, in Japanese Patent Publication No. 57-52715,
Figure fat ~ (as shown in C1, the front edge housing body a
Flap d with protrusion C facing the cavity opened in
A rear holder (rear holder) is coupled with a hinge e so as to be openable and closable, and a shoulder portion f of the rear holder double prevents the terminal g from coming off later.

According to the above configuration, the flap d is connected to the housing body a by an extremely short hinge e, and stress is concentrated on that portion each time the flap d is opened or closed.

Therefore, if the flap d is repeatedly attached and detached, the hinge e may break or become white.

Furthermore, if the terminal g is not fully inserted as shown in (C), the flap d cannot be closed and the terminal must be pushed in. Also, without noticing this, flap d
If you close it too tightly, there is a risk of damaging terminal g. moreover,
If the housing has multiple terminals, that is, if it is long horizontally, even if there is a terminal that is incompletely inserted, the flap d will be locked by the locking claws at both ends, and the terminal will not come out during use. , there is a risk that the flap d will be unlocked.

[Problem that the invention seeks to solve]

An object of the present invention is to solve the above-mentioned problems, so that the member connecting the rear holder and the housing has sufficient durability to be repeatedly attached and detached, and furthermore, the incomplete insertion of the terminal can be automatically resolved by attaching the rear holder. To provide a housing for a best-selling connector in which the locked state can be confirmed at a glance and the housing returns to its original position with its elasticity when a rear holder is incompletely supported.

Structure of the Invention [Means for Solving Problems] The electrical connector housing of the present invention has a flexible locking arm protruding from the inner wall of the terminal accommodating chamber formed inside the housing to prevent the terminal from coming off later. In the electrical connector housing, the housing has a rear holder locking hole formed on its outer peripheral wall facing the terminal accommodating chamber, and is inserted into the rear holder locking hole on the lower surface of the holder board. The present invention is characterized in that it includes a rear holder having a terminal locking portion formed at its front end, and a holder base plate of the rear holder is connected to the outer circumferential wall of the housing by a long flexible hinge arm.

[For production]

According to the present invention, the rear holder is connected to the housing by a durable long hinge arm that has flexible elasticity. Therefore, when the rear holder is attached and detached, stress is not concentrated on the fixed portions at both ends and the intermediate portion of the hinge arm, and there is no risk of breakage even if the hinge arm is repeatedly attached and detached. Further, since the rear holder is held by a long hinge arm, when it is not attached, it is separated from the housing by an appropriate distance, and its attachment/detachment state can be determined at a glance.

The terminal holding plate of the rear holder is inserted diagonally from above the rear part of the rear holder locking hole, and the terminal can be pushed forward using the lever principle, so incomplete insertion is automatically resolved and the terminal is securely inserted. Double locked.

Therefore, stable electrical connection can always be achieved.

〔Example〕

Hereinafter, the present invention will be specifically explained with reference to the drawings.

2 is an insulating housing for a male connector, and inside thereof a plurality of terminal accommodating chambers 2 are formed in upper and lower stages.

Each terminal accommodating chamber 2 has a projecting wall 3 at the front end to prevent the terminal 12 from coming off, and a flexible engagement wall 3 having a recess 4a at the tip is provided on the inner surface of the upper wall 1a (the upper and lower outer circumferential walls of the housing 1). A stop arm 4 is provided in a protruding manner, and the recess 4a is connected to the electrical contact portion 12 of the terminal 12.
It engages with the rear end of a to prevent it from coming off.

In addition, two slit-shaped carrier holder locking holes 5 are formed in the upper and lower outer peripheral walls 1a of the housing 1 facing both sides of each of the locking arms 40, and furthermore, in the left and right outer peripheral walls 1b, there are provided a rear suspension prevention mechanism, which will be described later. A locking hole 6 for the arm 9 is provided.

Reference numeral 7 denotes a rear holder, in which both ends of a holder board 8 extending across the housing 1 are supported by a rear floating prevention arm 9 having a locking claw 9a inside, and the arm 9 is a flexible long body. It is connected to the rear ends of the left and right outer peripheral walls 1b of the housing 1 via long hinge arms 10. The holder substrate 8 has a plurality of terminal holding plates 11 on the lower surface thereof corresponding to the two rear holder locking holes 5.

The terminal holding temporary 11 is a four-shaped plate body, and has a front floating prevention part 11a that slightly protrudes from the holder substrate 8 at the front end, and a terminal locking part 11c that hangs down via a front descending slope part 11b. It has a rear stopper portion lid that is substantially perpendicular to the rear end portion, and the terminal locking portion 11c and the rear stopper portion are continuous via a lower edge portion lie.

Before the terminal holding plate 11 is attached to the rear holder locking hole 5, the lower edge lie is located on the upper and lower outer circumferential wall 1a of the housing.
It is located above the rear part of the locking hole 5 with an appropriate distance C from the locking hole 5. Further, the hinge arm 1O has a length sufficient to support the rear holder 7 in a state before being mounted apart from the upper and lower outer circumferential walls 1a of the housing 1, and to move the rear holder 7 to the locking hole 5.

Next, a method for mounting the rear holder 7 and locking the terminal 12 will be explained.

As shown in FIG. 2, when the terminal 12 is inserted into the terminal housing chamber 2, the tip of the electrical contact portion 12a comes into contact with the projecting wall 3,
The rear end engages with the recess 4a of the locking arm 4, and is prevented from coming off forward and backward, respectively, resulting in a locked state.

Next, the rear holder 7 located above the rear part of the rear holder locking hole 5 is pushed down in the direction of the arrow A, its terminal holding plate 11 is inserted into the locking hole 5, and the holder board 8 is moved in the direction of the arrow A as shown in FIG. When pushed in the direction of line B, the hinge arm 10 is bent downward and the rear floating prevention arm 9 is pushed against the left and right outer peripheral walls 1b of the housing l.
The locking claw 9a engages the locking hole 6,
locked.

When the terminal holding plate 11 is pushed in, the original plate 11 rotates around the base end P of the front floating prevention portion 11a, and a large acting force is generated on the terminal locking portion 11c based on the lever principle. Therefore, even if the terminal 12 is incompletely inserted, the third
As shown in the figure, the terminal locking part 11C comes into contact with the stabilizer 12b provided at the rear of the electrical contact part 12a and pushes it out forcefully, so that the terminal 12 advances to its normal position. As a result, the terminal 12 is always engaged with the locking arm 4 and is securely locked. In addition, the locking arm 4 has terminal holding plates 1 on both sides.
Since the electric wire 13 is sandwiched between the electric wires m and 11 and its movement in the left and right direction is restricted, there is no risk of damage even if the electric wire 13 is pulled strongly.

In this way, the terminal 12 is doubly locked by the locking arm 4 and the terminal holding plate 11, so that the holding force is large, and even if the housing 1 is downsized, sufficient holding force can be obtained.

Further, even if an upward force acts on the rear holder 7, that is, the holder substrate 8, the front floating prevention portion 11 of the terminal holding plate 11
a engages with the inner wall of the terminal accommodating chamber 2 in front of the rear holder locking hole 5, so there is no risk of it being lifted up. Furthermore, since the rear stopper portion lid of the terminal holding plate 11 abuts against the back wall 5a of the locking hole 5, there is no fear of it coming off backward. In this way, the rear holder 7 is locked by the cooperative action of the terminal holding plate 11 and the rear holder locking hole 5, and by the rear floating prevention arm 9 and the locking hole 6.

To release this lock, the arm 9 is expanded outward to release its engagement with the locking hole 6, and the rear end of the holder board 8 is moved in the opposite direction to the arrow B in FIG. All you have to do is lift it around P.

In addition, since the hinge arm 10 has flexibility and is formed to be long, even if the rear holder 7 is repeatedly attached and detached, no strong stress is applied to the fixed portions at both ends thereof. Therefore, there is no risk of the hinge arm 10 being cut or the rear holder being separated.

5 to 7 show other embodiments of the invention.

The rear holder 7' is connected to the left and right outer peripheral walls 1b of the housing 1 by longer hinge arms 10' without the rear lifting prevention arm 9, and has a hook-shaped locking claw at the tip at the rear of the holder base plate 8. A rear floating prevention arm 9' having a designation 9'a is provided in a protruding manner.

In addition, a cutout groove 14 with a tapered inner edge 14 is provided on the terminal insertion side of the terminal accommodating chamber 2 in correspondence with the locking claw 9'a of the arm 9'.

In this case, the attachment of the carrier holder 7' is as shown in Figs. 6 and 7.
As shown in the figure, just insert the rear holder 7' from above the rear part of the rear holder locking hole 5 in the A direction and push it down in the B direction (the rear floating prevention arm 9' is The claw 9'a is engaged with the notch groove 14 and locked.Other functions are the same as described above.

As mentioned above, the electrical connector housing of the present invention is
Incomplete insertion of the terminal can be automatically resolved by attaching the rear holder.

In addition, the rear holder is connected to the housing by a durable long hinge arm with flexible elasticity, so it will not break even if it is repeatedly attached and detached, and the attachment status can be determined at a glance, and if the rear holder is incompletely attached. At times, its elasticity has the effect of returning it to its original position.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an electrical connector housing showing an embodiment of the present invention, Fig. 2 is a cross-sectional view of the main parts showing its assembled state, and Figs. 3 and 4 respectively show how to attach two rear holders. FIG. 5 is a perspective view showing another embodiment of the present invention, FIG. 6 is a cross-sectional view of main parts showing the assembled state, and FIG.
The figure is an explanatory view showing how to attach the rear holder, and Figs. 8(a-1-e) are explanatory views of conventional examples. 1...Housing, 2...Terminal storage chamber, 4...Register Locking arm, 5... Rear holder locking hole, 7, 7'...
Rear holder, 8... Holder board, 9, 9'... Rear floating prevention arm, 10, 10'... Hinge arm, 11
...Terminal holding temporary, Ila...Front floating prevention part, I
IC...terminal locking part. Patent applicant Yazaki Corporation Figure 1

Claims (1)

[Claims] A housing for an electrical connector comprising a flexible locking arm protruding from the inner wall of a terminal accommodating chamber formed inside the housing to prevent the terminal from coming off backward, the housing having a flexible locking arm protruding from the inner wall of the terminal accommodating chamber formed inside the housing, the housing having a flexible locking arm protruding from the inner wall of the terminal accommodating chamber formed inside the housing, the housing having a flexible locking arm protruding from the inner wall of the terminal accommodating chamber formed inside the housing. A rear holder is provided with a rear holder locking hole facing toward the front, and a rear holder inserted into the rear holder locking hole on the lower surface of the holder board and having a terminal locking part formed at the front end, and the holder board of the rear holder is movable. A housing for an electrical connector, characterized in that the housing is connected to an outer circumferential wall of the housing by a long hinge arm having elasticity.