JP2849897B2 - Simple waterproof 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 simple waterproof connector suitable for use in a branch connection of a wire harness for an automobile, and more particularly, to ensure waterproofness of a fitting connection between connectors without using a packing or the like. The present invention relates to a structure of a simple waterproof connector.

[0002]

2. Description of the Related Art FIG. 7 shows an example of a conventional waterproof connector. Female connector housing A in which a connection terminal to which an electric wire 33a having a rubber stopper 35a is crimped is accommodated.
This is a waterproof connector in which a male connector housing B accommodating a connection terminal formed by crimping an electric wire 33b to which a rubber stopper 35b is attached is housed. The male housing B is
A skirt tube portion 37 for receiving the insertion tube portion 36 of the female housing A and an inner tube portion 38 accommodating connection terminals are provided.
9 is fitted.

Accordingly, when the female housing A is fitted and connected to the male housing B, the waterproof property is improved by the waterproof packing 39 fitted on the outer peripheral surface of the inner cylindrical portion 38 of the male housing B. Infiltration of moisture from the cylindrical portion 38 side can be prevented. Further, since the outer peripheral surface of the waterproof packing 39 is in pressure contact with the inner peripheral surface of the insertion tube portion 36, moisture that tends to infiltrate from the insertion tube portion 36 is prevented. Further, the rubber stoppers 35a and 35b attached to the electric wires 33a and 33b prevent the water transmitted through the electric wires 33a and 33b from infiltrating to ensure waterproofness.

[0004]

However, in the waterproof connector having the above structure, the waterproof packing 39 may be detached from the inner cylindrical portion 38 or twisted at the time of maintenance, and the waterproof property may be impaired. Further, a waterproof packing 39 and a rubber stopper 35a, which are formed of an elastic material such as rubber,
The workability is poor because the mountability of the 35b is not very good.
Furthermore, the use of the waterproof packing 39 and the rubber stoppers 35a and 35b causes a problem that the number of parts is increased and the cost is increased. In particular, for a waterproof connector used in the interior of an automobile where the use environment is not severe, strict watertightness is not required, and it is sufficient to prevent water droplets adhering to the connector housing from infiltrating to the connection terminal by cooling or the like. is there.

An object of the present invention is to provide a simple waterproof connector which can ensure waterproofness without using a packing or the like, can easily perform an assembling operation, and can reduce costs by reducing the number of parts. It is in.

[0006]

The object of the present invention SUMMARY OF], together with a plurality of connection terminals are accommodated, the insertion opening for inserting a connector is formed, the first to off over de portion outwardly is formed A connector housing, a second connector housing fitted to the first connector housing and accommodating a plurality of connection terminals connected to the connection terminals, and fitted to a rear end of the second connector housing; And a lock cover provided with a double locking portion that prevents the connection terminal from falling off, while providing a seal projection on the upper surface and side surfaces of the front outer periphery of the hood portion,
A seal surface is provided on the upper surface and the side surface of the inner peripheral front end of the lock cover, and when the first connector housing and the second connector housing are fitted, the seal surface comes into contact with the seal protrusion. This can be achieved by a simple waterproof connector featured.

Further, the object of the present invention is to provide a connector housing accommodating a plurality of connection terminals, and a double locking portion fitted to a rear end of the connector housing to prevent the connection terminals from coming off. A simple waterproof connector comprising a lock cover, a seal projection is provided on an upper surface and a side surface of a rear outer periphery of the connector housing, and a seal surface is provided on an upper surface and a side surface of an inner peripheral front end of the lock cover. This can be achieved by a simple waterproof connector characterized in that the seal surface comes into contact with the seal projection when the cover is fitted.

[0008]

In the simple waterproof connector according to the present invention having the above-described structure, the connection terminals are double-locked by fitting the lock cover after the connection terminals are accommodated in the second connector housing, and the first terminals are locked. When the lock cover is fitted to the connector housing, the seal surface of the lock cover comes into contact with the seal projection of the first connector housing, thereby ensuring waterproofness. In the simple waterproof connector of the present invention having the above configuration, the connection terminals are double-locked by receiving the connection terminals in the connector housing and then fitting the lock cover, and the sealing surface of the lock cover is in the connector housing. Abutting against the seal projection to ensure waterproofness.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a simple waterproof connector according to the present invention will be described in detail with reference to FIGS. FIG. 1 is an exploded perspective view showing the configuration of the simple waterproof connector of the present invention, and FIG.
Is a sectional view in FIG. 1, and FIG. 3 is a sectional view showing a fitted state.

As shown in FIG. 1, a simple waterproof connector 1 according to this embodiment is an embodiment applied to a joint connector. The configuration is roughly divided into a female connector housing 2, a male connector housing 3, and a lock cover 4. It is configured. The female connector housing 2 is composed of a hood 6 forming a housing insertion port 9 for inserting a male connector to be described later, and a terminal holding portion 2a for holding a bus bar 7. A lock arm 5 for stopping is provided. In addition, seal protrusions 6a are provided on the outer upper surface and side surfaces in front of the hood portion 6 to ensure waterproofness.
Are formed continuously.

The male connector housing 3 has female terminals 11 (see FIG. 2) fixed to the ends of a plurality of electric wires 10 inserted into the terminal accommodating chamber 8. The plurality of electric wires 10 are arranged in a downward direction, wound around a tape, and bundled together. A lock beak 3 for locking a lock cover to be described later is provided at the rear end of the outer periphery of the male connector housing 3.
b are formed in plurality.

The lock cover 4 is provided with a double locking portion 4 c for retaining the female terminal 11 housed in the male connector housing 3, corresponding to the terminal housing chamber 8. Further, a lock portion 4b corresponding to the lock beak 3b of the male connector housing 3 and a seal surface 4d which comes into contact with the seal protrusion 6a of the female connector housing 2 are formed continuously on the inner upper surface and side surfaces. Further, a locking projection 4a for locking the lock arm 5 of the female connector housing 2 is provided at the tip of the outer upper surface.

Next, with reference to FIGS. 2 and 3, the waterproof property when the female connector housing 2 and the male connector housing 3 are fitted will be described. As shown in FIG. 2, the lock cover 4 is fitted to the rear end of the male connector housing 3 in which the female terminal 11 is accommodated. That is, the double locking portion 4c is positioned and pushed so as to be inserted into each terminal accommodating chamber 8 of the male connector housing 3 so that the locking portion 4b is formed.
Is engaged over the lock beak 3b of the male connector housing 3. Thereby, the lock cover 4 is integrally fitted to the male connector housing 3.

Then, as shown in FIG.
Is inserted along the inner surface of the hood 6 from the insertion opening 9 of the female connector housing 2. Then, the connection portion 7 of the bus bar 7 is inserted into the terminal insertion hole 3 a opened at the front end of the male connector housing 3.
When a is inserted and further pushed in, the claw 5a at the tip of the lock arm 5 of the female connector housing 2 rides over the locking projection 4a provided at the front end of the lock cover 4 and is locked. As a result, the female connector housing 2 and the male connector housing 3 are fitted and connected, and the female terminals 11 accommodated in the male connector housing 3 are electrically connected via the bus bars 7 of the female connector housing 2. You. At this time, the sealing protrusions 6a provided on the upper front surface and the side surfaces on the outer front side of the hood portion 6 and the sealing surface 4d on the inner upper surface of the lock cover 4 are in contact with each other, so that the infiltration of water or the like from above is prevented and the waterproof property Is secured.

Next, a simple waterproof connector 12 according to a second embodiment having a configuration different from that of the above-described embodiment will be described with reference to FIG. The description of the same components as in the first embodiment is omitted. As shown in FIG. 4, the lock cover 17 is integrated with the female connector housing 13 by a hinge 18 formed on the upper surface of the hood 16 of the female connector housing 13. A lock receiving portion 15 for engaging with the male connector housing 14 is provided on an outer lower surface of the female connector housing 13.
A lock arm 19 is provided at a position corresponding to the lock receiving portion 15 of FIG.

The male connector housing 14 accommodating the female terminals 11 having the above-described structure is replaced with the female connector housing 13.
Is inserted along the inner side surface of the hood portion 16, the connection portion of the bus bar 7 is inserted into the terminal insertion hole 14 a, and further pushed in, so that the lock arm 19 of the male connector housing 14 is engaged with the lock receiving portion of the female connector housing 13. 15 locked. In this state, the male connector housing 14 is fitted into the female connector housing 13, and the female terminals 11 accommodated in the male connector housing 3 are electrically connected via the bus bar 7. And finally, hinge part 1
The lock cover 17 connected by the connector 8 is fitted into the front end opening of the female connector housing 13 so that the seal projection 16 a provided on the upper front surface and the side surface of the outer side of the hood 16 and the inner side of the lock cover 17. The contact with the sealing surface on the upper surface prevents infiltration of water or the like from above, thereby ensuring waterproofness.

Next, as shown in FIG. 5, a simple waterproof connector 20 as a third embodiment can secure waterproofness with a lock cover 21 fitted on a male connector housing 22. That is, the male connector housing 2
The seal projections 2 are continuously formed on the outer rear upper surface and side surfaces of the
2a is provided on the inner upper surface of the lock cover 21 .
A locking groove 2 corresponding to the seal protrusion 22a is provided on the seal surface.
1a is provided. After the female terminal 11 is accommodated in the male connector housing 22, the double locking portion 21 b of the lock cover 21 is moved to the male connector housing 22.
The terminals are fitted so as to be fitted into the respective terminal accommodating chambers 24 opened at the rear end. At this time, by pushing the lock cover 21 until the front end thereof gets over the seal protrusion 22a, the seal protrusion 22a is engaged with the locking groove 21a on the seal surface . Thereby, in the male connector housing 22, the female terminal 11 is double-locked, and the infiltration of water or the like from above is prevented, so that waterproofness is secured. Note that a lock arm 23 provided on the outer upper surface of the male connector housing 22 is provided.
To engage with the corresponding female connector housing.

Next, as a fourth embodiment, a simple waterproof connector 25 combining the first embodiment and the third embodiment will be described with reference to FIG. As shown in FIG. 6, a male terminal 27 fixed to the end of the electric wire 10a is inserted into a terminal accommodating chamber 28 of the female connector housing 26, and a rear end opening of the female connector housing 26 is provided. Is fitted with a lock cover 21. As described with reference to FIG. 5, the waterproofness of the rear end opening of the female connector housing 26 has already been secured by the engagement of the lock cover 21 with the sealing projection 22a engaged with the locking groove 21a as described in FIG. . Also,
The female terminal 11 fixed to the end of the electric wire 10b is inserted into the terminal accommodating chamber 28 of the male connector housing 3, and the lock cover 4 is covered on the rear end opening of the male connector housing 3. It is fitted.

Accordingly, the male connector housing 3 fitted with the lock cover 4 in advance is fitted along the inner surface of the hood 6 of the female connector housing 26 fitted with the lock cover 21 in advance. Thereby, the male connector housing 3 and the female connector housing 26 are fitted, and the female terminal 11 and the male terminal 27 are electrically connected. At this time, as described with reference to FIG.
The contact between the a and the sealing surface 4d of the lock cover 4 prevents water or the like from infiltrating from above, thereby ensuring waterproofness.

[0020]

As described above, according to the simple waterproof connector according to the present invention, the first connector housing is provided with the seal projections on the upper and side surfaces of the front outer periphery of the hood portion, and the inner periphery of the lock cover. Seal surfaces are provided on the upper surface and side surfaces of the front end portion, and when the first connector housing and the second connector housing are fitted, the seal surface comes into contact with the seal projection. In addition, a seal projection is provided on the upper surface and side surface of the rear outer periphery of the connector housing, and a seal surface is provided on the upper surface and side surface of the inner peripheral front end of the lock cover. When the lock cover is fitted, the seal surface is provided with the seal protrusion. Abut the part. Therefore, infiltration of water or the like into the connection terminal portion is prevented without using a waterproof packing or a rubber stopper, and the waterproof property is secured. In addition, since no waterproof packing or rubber stopper is used, the assembling work can be easily performed, and the cost can be reduced by reducing the number of parts.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of a simple waterproof connector according to a first embodiment of the present invention.

FIG. 2 is a sectional view of FIG.

FIG. 3 is a sectional view showing a fitted state in FIG. 1;

FIG. 4 is a sectional view showing a fitted state of the second embodiment.

FIG. 5 is a sectional view showing a third embodiment.

FIG. 6 is a sectional view showing a fitted state of the fourth embodiment.

FIG. 7 is a perspective view showing a configuration of a conventional waterproof connector.

[Explanation of symbols]

1,12,20,25 Simple waterproof connector 2,13,26 Female connector housing (first connector housing) 3,14,22 Male connector housing (second connector housing) 3a, 14a Terminal insertion hole 3b Lock beak 4 , 17, 21 Lock cover 4a Lock projection 4b Lock section 4c, 17a, 21b Double lock section 4d, 17b Seal surface 5, 19, 23 Lock arm 5a Claw section 6, 16 Hood section 6a, 16a, 22a Seal projection Part 7 Bus bar 8, 24, 28 Terminal accommodating room 9 Housing insertion port 10 Connection wire 11 Female terminal 15 Lock receiving part 18 Hinge part 21a Locking groove 27 Male terminal

Claims (4)

(57) [Claims] 1. A with a plurality of connection terminals are accommodated, the insertion opening for inserting a connector is formed, a first connector housing off over de part outside is formed, fitted into the first connector housing A second connector housing in which a plurality of connection terminals to be connected to the connection terminals are accommodated, and a double lock that is fitted to a rear end of the second connector housing to prevent the connection terminals from coming off. A simple waterproof connector comprising a lock cover provided with a seal portion, wherein a seal projection is provided on an upper surface and a side surface of a front outer periphery of the hood portion, and a seal surface is formed on an upper surface and a side surface of an inner peripheral front end of the lock cover. A simple waterproof connector, wherein when the first connector housing and the second connector housing are fitted, the sealing surface comes into contact with the sealing projection. 2. A connector housing accommodating a plurality of connection terminals, and a lock cover fitted with a rear end of the connector housing and having a double locking portion for preventing the connection terminals from coming off. In the simple waterproof connector, a seal projection is provided on an upper surface and a side surface of a rear outer periphery of the connector housing, and a seal surface is provided on an upper surface and a side surface of an inner peripheral front end of the lock cover, and when the lock cover is fitted. A simple waterproof connector characterized in that the seal surface comes into contact with the seal protrusion. Wherein the lock cover, the first connector <br/> simple waterproof connector of claim 1 Symbol placement is hinged to motor housing. 4. The simple waterproof connector according to claim 2 , wherein a groove for locking the seal projection is provided on the seal surface.