JPH07123059B2 - connector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector provided with locking means for preventing a terminal fitting in a housing from coming off.

[0002]

2. Description of the Related Art Conventionally, in order to prevent a terminal fitting from being pulled out by damaging a terminal locking claw due to repeated attachment and detachment of a connector, a terminal fitting is inserted into a housing. It is known later that the terminal locking member is engaged with the rear part of the housing. However, after inserting the terminal fittings to which the wires are individually connected into the housing, inserting the wires into the terminal locking members one by one and then mounting the terminal locking members is very complicated in terms of work and is efficient. is not.

As disclosed in Japanese Patent Laid-Open No. 55-19797, a terminal engaging member is slid on the rear end surface of the housing to partially close the opening of the terminal receiving hole of the housing. It is also known to lock the terminal fitting with a part of the stop member.

[0004]

However, in the device disclosed in the above publication, the terminal locking member cannot be slid unless all the terminal fittings are properly positioned in the terminal accommodating holes. Even if only one terminal protrudes from the terminal accommodating hole, it is an obstacle and cannot be closed.

The object of the present invention is to overcome the above-mentioned drawbacks,
In order to lock the terminal fitting by the terminal locking member, the housing and the terminal locking member are tentatively engaged, and a required number of terminal fittings to which electric wires are connected are inserted into the housing through the terminal locking member. After that, push the terminal locking member into the housing, and even if the terminal fitting is not fully inserted in the terminal accommodating hole, push the terminal fitting back to the normal position, and with one touch, engage the housing and the terminal locking member. The purpose is to provide a connector for reassembling.

[0006]

SUMMARY OF THE INVENTION A connector according to the present invention for achieving the above object comprises a housing made of a synthetic resin material, and a terminal fitting inside the housing fitted to a rear end portion of the housing. A connector configured by a terminal locking member made of a synthetic resin material for retaining locking, wherein engagement between the housing and the terminal locking member is achieved by fitting the housing and the terminal locking member. Temporary locking engagement in a state in which both of them are engaged with each other and the center axis of the terminal accommodating hole is aligned with the through hole for inserting the terminal fitting into the terminal accommodating hole of the housing from the through hole of the terminal locking member. Means for preventing the terminal fittings housed in the terminal housing holes of the housing from coming out of the insertion holes of the terminal locking members, with respect to the housing in the direction of the central axis. By relatively moving in a direction perpendicular to the central axis line direction as well as relative movement in,
The terminal having the main engagement means in a state in which the terminal locking member is moved diagonally forward to shift the center axis lines of the insertion hole and the terminal accommodating hole, and the electric wire is connected in the temporary fixing engagement state. The metal fitting is inserted into the terminal accommodating hole of the housing through the insertion hole of the terminal locking member, and after the insertion is completed, the metal fitting is moved to the main engagement state, and a part of the terminal locking member causes the terminal metal fitting to It is characterized in that it is configured so as to prevent slipping and locking.

[0007]

In the connector having the above structure, the terminal fitting with the wire is inserted into the terminal receiving hole of the housing with the terminal locking member being temporarily locked in the housing, and then the terminal locking member is attached to the housing. The terminal fitting is locked by a part of the terminal locking member by relatively moving in a direction orthogonal to and parallel to the central axis direction and finally locking.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the illustrated embodiments. 1 and 2 show a state of a preparation stage for inserting a terminal fitting between the housing 1 and the terminal locking member 2, FIG. 1 is a side view, and FIG. 2 is a longitudinal sectional view thereof. In the housing 1,
For example, three-stage double-row terminal accommodating holes 3 are provided, terminal locking claws 4 project downward from the upper side of the terminal accommodating holes 3, and a frame-shaped terminal is provided at the front of the terminal accommodating hole 3. A tip contact portion 5 is formed. A flange 6 is provided on the outer periphery of the housing 1 so as to contact the front end surface of the terminal locking member 2, and the outer shape of the flange 6 and the outer shape of the terminal locking member 2 are substantially the same. .

An insertion hole 7 corresponding to the terminal accommodating hole 3 of the housing 1 is provided in the rear half of the terminal locking member 2, and the front half is a rectangular opening when viewed from the front. The inner side surface 8 of the lower side of the rectangular opening serves as a guide surface for the rear end surface of the housing 1 and is provided with a stepped portion 9. The rear end surface of the housing 1 is located at the position of the chain line in FIG. The step portion 9 is brought into contact with and temporarily engaged with the step portion 9. With the rear end surface of the housing 1 in contact with the stepped portion 9 of the terminal locking member 2, the terminal fitting is inserted into the insertion hole 7 of the terminal locking member 2.
It can be inserted into the terminal receiving hole 3 of the housing 1.

A locking arm 10 is provided on the outer surface of the terminal locking member 2, and the arm 10 also has a sloped portion 11 of the guide groove 11 of the housing 1 in the temporarily fixed state.
In addition, the convex portion 12 provided on the surface of the edge portion of the housing 1 is also fitted in a receiving portion (not shown) on the inner surface of the terminal locking member 2 in a temporarily fixed state. The locking engagement is adapted to be in place. In addition,
As will be described later, when the flange 6 and the front end surface of the terminal locking member 2 come into contact with each other, the rocking arm 10 will not move.
The claw portion 10a is fitted into the lock portion 13 provided on the flange 6 of the housing 1 so as to be locked.

To insert the terminal fitting into the housing 1,
As shown in FIG. 3, the step fitting 9 of the lower inner surface 8 of the rectangular opening of the terminal locking member 2 holds the temporary fixing engagement state in which the rear end surface of the housing 1 is in contact with the terminal fitting 15 to which the electric wire 14 is connected. Is inserted into the insertion hole 7 of the terminal locking member 2, and then inserted into the terminal accommodating hole 3. When inserting, the locking piece 16 of the terminal fitting 15
Is displaced downward by the terminal locking claw 4, and when it passes through the terminal locking claw 4, it is restored to its original position and the first retaining lock is made to the rear side. Abutment 5
The forward position is restricted by.

After this is repeated and the insertion of the predetermined number of terminal fittings 15 is completed, the terminal locking member 2 is pushed forward to push the flange 6 of the housing 1 and the terminal locking as shown in FIG. The main engagement state where the front end surface of the member 2 abuts is achieved. In this process, the claw portion 10 of the arm 10
Since "a" advances along the inclined surface portion 11a, the terminal accommodation hole 3 of the housing 1 and the insertion hole 7 of the terminal locking member 2 are vertically displaced. In this position, the locking arm 1 of FIG.
The claw portion 10a at the tip of 0 passes through the through hole provided in the flange 6 and fits with the lock portion 13, so that the housing 1 and the terminal locking member 2 are locked and the terminal fitting 15
The rear end face of the wire coating crimping portion 19 of the
The second retaining lock of the terminal fitting 15 is performed. In this case, it is preferable that the wire coating crimping portion 19 is largely swollen to the outside so that the wire coating crimping portion 19 can be easily locked.

In the present invention, since the pushing operation of the terminal locking member 2 is indispensable at the time of the final locking state, some of the terminal fittings 15 are tentatively inserted into the terminal accommodating holes 3. Even when it is not inserted, the terminal fitting 15 can be pushed into a predetermined position by the end portion 7a of the terminal locking member 2.

FIGS. 5 and 6 show another embodiment, which is shown in FIG.
The same reference numerals as those in FIG. 2 indicate the same members, and this embodiment is functionally almost the same as the previous embodiment, but a plurality of flat plate projecting portions 20 extend from the rear end face to the lower side of the housing 1. Has been done. On the other hand, the housing 1 is provided below the terminal locking member 2.
The dovetail groove 21 that fits with the protruding portion 20 is provided, and the depth of the dovetail groove 21 is shallow.

Therefore, when the terminal fitting 15 is inserted into the housing 1 in the temporarily engaged state, the protrusion 20 is formed into the dovetail groove 21.
, The stability of the housing 1 and the terminal locking member 2 is maintained by the action of the dovetail groove 21, and a predetermined number of terminal fittings 15 are inserted into the terminal accommodating holes 3 through the insertion holes 7 of the terminal locking member 2. Each terminal metal fitting 1 with locking claws 4
The first retaining lock of No. 5 is made. Next, once the dovetail groove fitting between the terminal locking member 2 and the housing 1 is removed and then pushed in, the terminal locking member 2 is advanced obliquely while being guided by the inclined surface portion 11a, and the flange 6 and the terminal locking member 2 are pushed. Similar to the previous embodiment, the front end face of the above-mentioned abuts to be in the final engagement state.

FIGS. 7 to 10 also show another embodiment, in which two rows of guide grooves 23a and 23b having a chevron cross section are provided on the inner side surface 22 of the terminal locking member 2. A guide convex piece 24 having a cross-sectional shape that selectively matches is formed on the outer surface of the housing 1. Also, the terminal locking member 2
Inside each of the terminal receiving holes 3, there is a locking piece 25 which is inserted into the terminal receiving hole 3 of the housing 1 when the main engagement state is reached to perform the second retaining lock of the terminal fitting 15. They are provided individually. Incidentally, 26, 27 and 28 are locking arms, which are claws 29 provided on the housing 1.
And 30 in cooperation with each other to perform a locking action.

Here, when the terminal locking member 2 is pushed in while fitting the guide convex piece 24 of the housing 1 into the guide groove 23a of the terminal locking member 2, as shown in FIG.
The inner end portion 31 of the locking member 26 abuts on the rear end surface of the housing 1, and the locking arm 26 is locked with the claw portion 29 to temporarily engage. In this state, the accommodation hole 3 and the insertion hole 7 are aligned with each other, and the terminal fitting 15 can be inserted.

After inserting all the terminal fittings 15, FIG.
When the terminal locking member 2 is lifted with respect to the housing 1 as shown in FIG. 5, the guide protrusion 24 rides over the ridge of the guide groove 23a and moves to the guide groove 23b, the locking arm 26 disengages from the claw 29, and the locking arm 26 moves. 28 is housing 1
Stick to the bottom surface of. In this state, when the terminal locking member 2 is pushed toward the housing 1 as shown in FIG. 10, the guide convex piece 24 advances along the guide groove 23b, and the locking piece 25 moves the electric wire 14 in the terminal accommodating hole 3. To reach the position facing the rear end surface of the crimping portion 19 of the terminal fitting 15 and prevent the second fitting of the terminal fitting 15 from coming off. At this time, the locking arm 26 is locked to the claw 29, and the locking arm 28 is locked to the claw 30 to be in the main engagement state.

[0019]

As described above, in the connector according to the present invention, the terminal fitting to which the electric wire is connected passes through the insertion hole of the terminal locking member in the housing by the temporary engaging means of the housing and the terminal locking member. Can be inserted into the terminal receiving hole of
Then, the terminal locking member is moved with respect to the housing, and the terminal locking member locks the terminal fitting with respect to the terminal fitting so that the number of required steps can be significantly reduced. Further, even if the terminal arrangement has three or more stages or the rows are staggered as described above, there is no problem, and there is an advantage that the retainer can be locked by the terminal locking member with one touch. There is.

[Brief description of drawings]

FIG. 1 is a side view of a preparation stage for inserting a terminal fitting.

FIG. 2 is a vertical sectional view thereof.

FIG. 3 is a vertical cross-sectional view of a temporarily fixed engagement state.

FIG. 4 is a vertical cross-sectional view of a fully fitted state.

FIG. 5 is a side view of another embodiment in a state of preparation for insertion of terminal fittings.

FIG. 6 is a vertical sectional view thereof.

FIG. 7 is a vertical cross-sectional view of still another embodiment.

FIG. 8 is a vertical cross-sectional view showing a temporarily fixed engagement state.

FIG. 9 is a vertical cross-sectional view showing a state in which the terminal engaging member is moved.

FIG. 10 is a vertical cross-sectional view of the main engagement state.

[Explanation of reference numerals] 1 housing 2 terminal locking member 3 terminal accommodating hole 7 insertion hole 9, 14 wire 15 terminal metal fitting 19 wire coating crimping part 21 dovetail groove 23a, 23b guide groove 24 guide convex part 25 locking piece

Claims (3)

[Claims] 1. A housing made of a synthetic resin material, and a terminal locking member made of a synthetic resin material which is fitted to a rear end portion of the housing to lock and prevent a terminal fitting in the housing from coming off. A connector, the engagement between the housing and the terminal locking member ,
Engage both the fitting between the terminal retaining member, the central axis each other of the insertion hole and the terminal accommodating holes for inserting the terminal fitting from the insertion hole of the terminal retaining member into the terminal accommodating hole of the housing The terminal locking member in order to prevent the terminal engaging member in the terminal accommodating hole of the housing from coming out from the insertion hole of the terminal engaging member. Relative to the central axis direction and relative to the direction orthogonal to the central axis direction to move the terminal locking member diagonally forward to center the insertion hole and the terminal accommodating hole. Inserting the terminal fitting having the main engagement means in a state where the axes are displaced from each other and connecting the electric wire in the temporary engagement engagement state into the terminal accommodation hole of the housing through the insertion hole of the terminal locking member. Then Wherein the process moves to the engagement state after insertion completion, the connector being characterized in that a configuration in which the locking engagement omission of the terminal fitting by a part of the terminal engaging member. 2. The connector according to claim 1, wherein the retaining lock of the terminal fitting is performed by locking an electric wire crimping portion of the terminal fitting by an edge portion of an insertion hole of the terminal locking member. 3. The connector according to claim 1, wherein the retaining lock of the terminal fitting is performed by locking a wire crimping portion of the terminal fitting by a locking piece protruding from the terminal locking member.