JPH0244463Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention has a double locking structure in which a spacer is inserted from the rear of the storage chamber to the connection terminal that is stored and locked in the terminal storage chamber of the connector housing. Concerning improvements to connectors.

[Conventional technology]

As a conventional known technique, there is one shown in FIG. 8, for example.

That is, a is a housing in which a plurality of terminal accommodating chambers b are arranged side by side, and c is a plate-shaped spacer with a locking protrusion d for the connection terminal stored and locked in the terminal accommodating chamber and a locking part e for the housing a. We are prepared. The housing a includes a rear part of the terminal accommodation chamber b,
In addition to providing a spacer storage chamber f on the wire connection side,
The chamber f is provided with a locking hole g that engages with the locking protrusion _e1 of the housing locking portion e.

As shown in Fig. 9, the above connector is manufactured by inserting the connecting terminal h into the terminal accommodating chamber b and locking it with the lance i, and then inserting the spacer c from the rear of the accommodating chamber. If there is a connecting terminal, the locking protrusion d of the spacer c is used to advance it to the normal position of the lance i.

[Problem that the invention attempts to solve]

In the connector having the above-described structure, the housing a and the spacer c are formed separately and are usually separated, so that the spacer must be separately attached after the connection terminal is inserted, resulting in poor workability.
Further, if a spacer is inserted while leaving one of the connection terminals to be accommodated, the spacer must be removed, which is inconvenient.

The purpose of the present invention is to eliminate the above-mentioned inconvenience, to allow the housing and spacer to be integrally locked, and to improve workability by allowing connection terminals to be inserted even with the spacer attached. The purpose is to provide a spacer.

[Means for solving problems]

In order to achieve the above object, the present invention provides a connector housing in which a plurality of terminal accommodating chambers are arranged in parallel, a connecting terminal stored and locked in the terminal accommodating chamber, and a connecting terminal that is inserted and inserted from the rear end side of the connector housing. and a spacer for doubly preventing the connection terminal from running out, the spacer includes a spacer body, a flexible terminal locking arm protruding in front of the spacer body, and a flexible terminal locking arm corresponding to each terminal accommodating chamber; a flexible housing locking arm protruding from the spacer body, the terminal locking arm having a protrusion having a substantially chevron-shaped cross section at its tip that engages with the connection terminal; The connector housing has a locking hole in the middle and a locking claw at the tip.
A hood for housing the main body of the spacer is provided at an appropriate interval on the rear end side, and a locking protrusion that fits into the locking hole of the housing locking arm and has a tapered rear surface is provided on the housing side wall. , a groove portion for allowing the protrusion of the terminal locking arm to enter is provided in the upper wall portion facing the connection terminal in the terminal accommodating chamber, and when the spacer is inserted into the hood, the housing locking arm The locking pawl engages with the rear tapered surface of the locking protrusion to restrict forward movement of the spacer, and the rear end of the locking pawl engages with the front edge of the hood to prevent the spacer from moving backward. This feature is characterized in that the spacer is temporarily locked to the connector housing to prevent the spacer from coming off.

[Effect]

In the present invention, the spacer is housed in the hood on the rear end side of the connector housing, and the locking claw at the tip of the housing locking arm is connected to the locking protrusion on the side wall of the housing, especially its rear tapered surface and the front edge of the hood. Since the spacer and the connector housing are integrally locked by restricting movement in the front-back direction by engagement, the two are not separated as in the past, and workability is improved.

In addition, the chevron-shaped protrusion of the terminal locking arm of the spacer is able to bend and displace upward due to the presence of the groove on the upper wall of the terminal housing chamber, so even when the spacer is attached to the connector housing, the connecting terminal can be Can be inserted.

〔Example〕

In Figures 1 to 4, A indicates a connector housing, B a spacer, and C a hood.The hood C is provided with an appropriate gap on the rear end side of the connector housing A in which a plurality of terminal accommodation chambers 1 are arranged side by side. Although they are formed integrally bulging around the entire circumference, a pair may be provided on the side wall.

As shown in FIGS. 4A to 4C, the spacer B has a flexible terminal locking arm 3 protruding from the front edge of a plate-shaped spacer body 2 corresponding to the terminal accommodating chamber 1, and Flexible housing locking arms 4 are provided protruding from both sides of the spacer body 2, and in the illustrated example, the spacer body 2 is connected in two stages, upper and lower. The terminal locking arm 3 is provided at its tip with a chevron-shaped protrusion 3a that engages with the connection terminal. Further, the housing locking arm 4 has a locking hole 4a in the middle, and a locking claw 4 at the tip.
b is provided. The locking pawl 4b has a triangular or trapezoidal shape with tapered surfaces _4b1 on both front sides, and a hook portion 4 that protrudes outward at the rear thereof.
It is formed as b ₂ .

In the hood C, a groove 6 into which the plate-shaped spacer main body 2 of the spacer B is inserted is provided in the upper part of the partition wall 5 that partitions each terminal accommodating chamber 1 .

On the other hand, in the side wall of the connector housing A, a locking hole 4a of the housing locking arm 4 in the spacer B is provided.
A locking protrusion 7 is provided which fits into the locking protrusion 7. The rear side of this locking projection 7 is a tapered surface 7b.
In addition, in each terminal accommodation chamber 1, its upper wall portion 1
As shown in FIG.
The inner wall of the groove 1b is a tapered surface 1c that descends in the direction in which the connection terminal is inserted. 1d is a wall abutting against the protrusion 3a, and 8 is a known terminal locking lance for locking the connection terminal inserted into the terminal accommodating chamber 1, which has a protrusion 8a at its tip.

In the above configuration, a spacer B is attached shallowly from the rear of the hood C along the groove 6, and the locking claw 4b at the tip of the housing locking arm 4 is connected to the locking protrusion 7 on the housing side wall and the front edge _C1 of the hood C. When the spacer B is fixed between the connector housing A and the connector housing A, the spacer B is temporarily locked with the connector housing A and is held integrally with the connector housing A.

That is, the spacer B receives a backward force due to the engagement between the rear tapered surface 7a of the locking protrusion 7 and the tapered surface _4b1 of the locking claw 4b, and is prevented from slipping out forward. Furthermore, when the spacer B is pulled rearward, the hook portion _4b2 of the locking pawl 4b is attached to the front edge of the hood.
Since it comes into contact with _B1 and stops, it prevents it from coming off backwards. Figures 2A and 2B show this temporarily locked state.

In this state, the terminal locking arm 3 of the spacer B
As shown in FIG.
It is located in a groove 1b formed in the upper wall portion 1a. Therefore, for example, the locking claw 4 of the spacer B
When the connecting terminal 9 is inserted while pressing b with a finger, its electrical contact portion 9a will come into contact with the lower surface _3a1 of the protrusion 3a, and the terminal locking arm 3 will bend upward, or the lower surface 3
Since it passes through the space between a ₁ and the bottom wall of the terminal accommodating chamber 1, the connecting terminal 9 can be inserted with the spacer B attached.

FIG. 6 shows the action of the terminal locking arm 3 when the connection terminal 9 is incompletely inserted. When the spacer B is pressed forward, the top 3a ₂ of the protrusion 3a aligns with the groove 1b.
The front slope 3 is pushed down by the back wall 1c of
a ₃ enters while contacting the rear end of the electrical contact portion 9a. Then, as shown in Fig. 7, the front slope 3a ₃
comes into contact with the abutting wall 1d, and the connecting terminal 9 is also pushed to the normal position (protrusion 8a) of the terminal locking lance 8, the protrusion 8a engages in the locking hole 9b, and the connecting terminal 9 and the terminal housing chamber 1 are separated. locking is achieved.

At the same time, the locking claw 4b of the housing locking arm 4 of the spacer B advances over the locking protrusion 7 on the housing side wall, and the locking protrusion 7 fits into the locking hole 4a, and the spacer B and the connector housing A
is locked.

As described above, the connection terminal 9 is doubly locked by the terminal locking lance 8 in the terminal housing chamber and the terminal locking arm 3a of the spacer B.

[Effect of idea]

As explained above, according to the present invention, a connector with good workability is obtained in which a connecting terminal can be inserted in a state in which a lance that double-locks the connecting terminal is temporarily locked in the connector housing.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the connector of the present invention, and FIGS. 2A to 2C are a front view A, a plan view B, and a side view C, respectively, showing the spacer in a temporarily locked state. FIG. 3 is a front view showing the same spacer as above in a locked state. FIGS. 4A to 4C are a front view A, a plan view B, and a side view C of the same spacer, respectively. FIG. 5 is a cross-sectional view showing the spacer in a temporarily locked state, FIG. 6 is a cross-sectional view showing the connecting terminal in the incompletely inserted state, and FIG. 7 is a cross-sectional view showing the connecting terminal in the completely inserted state. FIGS. 8 and 9 are explanatory diagrams of conventional examples. A... Connector housing, B... Spacer,
C...Hood, 1...Terminal housing chamber, 1a...Top wall portion, 1b...Groove, 2...Spacer body, 3...
Terminal locking arm, 3a... protrusion, 4... housing locking arm, 4a... locking hole, 4b... locking claw, 7...
...Latching protrusion, 8...Terminal locking lance, 9...Connection terminal.

Claims (1)

[Scope of utility model registration request] A connector housing in which a plurality of terminal accommodating chambers are arranged side by side, a connecting terminal housed and locked in the terminal accommodating chamber, and a connecting terminal inserted from the rear end side of the connector housing to double prevent the connecting terminal from leaving behind. In the connector, the spacer includes a spacer body, a flexible terminal locking arm protruding in front of the spacer corresponding to each terminal accommodating chamber, and a flexible housing protruding from the spacer body. a locking arm, the terminal locking arm has a protrusion at its tip that has a substantially chevron-shaped cross section that engages with the connection terminal, and the housing locking arm has a locking hole in the middle and is locked at its tip. The connector housing has a claw, and the connector housing is provided with a hood at an appropriate interval on the rear end side to house the main body of the spacer,
A locking protrusion that fits into the locking hole of the housing locking arm and has a tapered surface on the rear side is provided on the housing side wall, and a locking protrusion of the terminal locking arm is provided on the upper wall portion facing the connection terminal in the terminal accommodating chamber. A groove is provided to allow the protrusion to enter, and when the spacer is inserted into the hood, the locking claw of the housing locking arm engages with the rear tapered surface of the locking protrusion and moves forward of the spacer. At the same time, the rear end of the locking claw engages with the front edge of the hood to prevent the spacer from coming off backwards, thereby temporarily locking the spacer to the connector housing. Characteristic connectors.