JPH067584Y2 - Waterproof connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a waterproof connector for accommodating a connection terminal used for electric wiring of a vehicle or the like.

(Prior Art) A conventional waterproof connector for a vehicle will be described with reference to FIG. 4, and a housing 3 for accommodating a connection terminal 1 to which an electric wire 2 is attached and a waterproof plug 4 in which the electric wire 2 is inserted. A rear holder 5 that receives the waterproof plug 4 is provided.

The housing 3 is made of a synthetic resin, and a plurality of terminal accommodating chambers 7 accommodating the connection terminals 1 are provided through the front and rear sides thereof, and a rear accommodating chamber 8 into which the rear holder 5 is fitted. Are formed. Then, there is a positioning groove 9 for positioning and locking the rear holder 5, and a locking hole 1
0 is provided.

The waterproof plug 4 is made of an elastic member such as rubber, has an insertion hole 12 through which the electric wire 2 is inserted, and is provided with a plurality of annular projections 13 for liquid tightness on the outer peripheral surface. When the wire 2 is press-fitted into the terminal accommodating chamber 7, the watertightness is maintained between the waterproof plug 4 and the terminal accommodating chamber 7 and between the waterproof plug 4 and the electric wire 2 due to elasticity.

The rear holder 5 is composed of a plate-shaped block having the wire insertion holes 15 and 15, and is provided with a positioning protrusion 16 and a locking protrusion 17. The electric wire 2 is held by the electric wire insertion port 15 by being fitted into the holder accommodating chamber 8, and the positioning projection 16 and the locking projection 17 have the positioning groove 9 and the locking hole 10.
And is held by the housing 3.

To connect the connection terminal 1 to the connector having the above structure, after inserting the electric wire 2 into the waterproof plug 4, the connection terminal 1 is caulked and connected to the end of the electric wire 2, and the waterproof plug 4 is also fixed by caulking. It is press-fitted into the terminal accommodating chamber 7 of the housing 3. And wire 2
The rear holder 5 inserted through the is attached to the holder accommodating chamber 8 of the housing 3. As a result, the waterproof plug 4 closes the terminal accommodating chamber 7 in a liquid-tight manner, so that a function as a waterproof connector can be obtained.

As described above, the rear holder 5 is mounted in the holder accommodating chamber 8 so as to press the outer surface of the waterproof plug 4 press-fitted into the terminal accommodating chamber 7, so that the waterproof plug 4 is surely prevented from falling off. be able to.

The above-described conventional connector has no problem because rainwater or the like can be prevented from entering the inside of the connector by the waterproof plug 4 described above, but there is a possibility that a problem may occur in the case of a car wash where high-pressure washing is performed.

That is, when high-pressure washing water is sprayed on the connector, as shown in FIG. 5, the high-pressure water W that has passed through the gap between the electric wire insertion port 15 of the rear holder 5 and the electric wire 2 directly hits the waterproof plug 4, and the sixth As shown in the figure, the waterproof plug 4 is elastically deformed in the longitudinal direction, and a gap is generated between the electric wire 2 and the inner diameter portion of the waterproof plug 4 or between the terminal accommodating chamber 7 and the outer peripheral part of the waterproof plug 4 to form a terminal accommodating chamber. There is a risk that water may enter the inside of 7 and adversely affect the connection terminals 1 and the like.

(Problems to be Solved by the Invention) As described above, in the conventional waterproof connector, when high-pressure water is sprayed, there is a risk that water may enter the terminal accommodating chamber.

The present invention has been made to eliminate the above-mentioned problems, and provides a waterproof connector that can reliably prevent water from entering the terminal housing chamber even when high-pressure water is sprayed. With the goal.

[Means for Solving the Problems] (Means for Solving the Problems) In order to achieve the above-mentioned object, a connector of the present invention includes a housing having a plurality of terminal accommodating chambers, and a waterproof member press-fitted into the terminal accommodating chambers of the housing. The waterproof cover includes a stopper, a rear holder mounted on the rear portion of the housing for receiving the waterproof stopper, and a waterproof cover integrally provided on the rear side of the rear holder. One end of the waterproof cover is at least outside the rear portion of the rear holder. It is characterized in that it is composed of a pair of lids that cover the end face, have an electric wire outlet on the other end side, and are connected continuously to the rear holder so as to be openable and closable.

(Function) In the present invention, the rear holder is provided with the waterproof cover that covers the rear end surface of the rear holder so that the rear end surface can be opened and closed. be able to. As a result, it is possible to prevent deformation of the waterproof plug and damage to the wire coating, and it is possible to prevent water from entering the terminal accommodating chamber.

(Embodiment) The details of the present invention will be described below with reference to an embodiment shown in FIGS.

The waterproof connector according to the present embodiment includes a housing 21 accommodating the connection terminal 1 to which the electric wire 2 is attached, a waterproof plug 31 into which the electric wire 2 is inserted, a rear holder 41 for receiving the waterproof plug, and a rear portion of the rear holder 41. It is composed of a waterproof cover 51 that covers the end surface 45 and is connected to the rear holder 41 so as to be openable and closable.

The housing 21 is formed with six terminal accommodating chambers 22 for accommodating the connection terminals 1 to which the electric wires 2 are connected, and a recessed holder accommodating chamber 23, in which a positioning groove 24 for positioning and a locking groove for locking are formed. Locking holes 25 are provided.

Similar to the conventional example, the waterproof plug 31 is provided with a plurality of annular protrusions 32 on the outer peripheral surface thereof, and is press-fitted into the terminal accommodating chamber 22 together with the inserted electric wire 2 so that the space between the waterproof plug 31 and the terminal accommodating chamber 22 is reduced. Also, the waterproof plug 31 and the electric wire 2 are kept liquid-tight.

The rear holder 41 is composed of a plate-like block as in the conventional example, and has an electric wire insertion port 42. These correspond to the arrangement positions of the terminal accommodating chambers 22, and the three electric wires 2 are inserted and held in the respective electric wire insertion openings 42. Further, the positioning protrusion 43 and the locking protrusion 44 are provided, and the positioning groove 24 of the housing 21 and the locking hole 2 are provided.
It is fitted and fixed in the holder accommodating chamber 23 by engagement with 5.

Next, the waterproof cover 51 will be described. This is composed of a pair of lids 52 and 53, one end of each of which is connected to the upper surface and the lower surface of the rear holder 41 by a flexible belt-shaped member 54, and both lids are shown by a chain line in FIG. Bodies 52, 5
3 covers the outer end surface 45 of the rear holder 41 so that it can be opened and closed. A locking claw 55 is attached to the lid 53. On the other hand, the lid 52 is provided with a locked projection 56, and when both are closed, they engage with each other to keep both lids 52 and 53 in that state. Further, when the lids 52 and 53 are opened, the electric wire 2 can be taken in and out from the electric wire insertion openings 42 and 43 from the side, and these electric wires 2 are led out to the outside from the lead-out opening 57 formed at the other end. You can do it.

The waterproof connector of this embodiment is constructed as described above, and the operation of this will be described below. In order to assemble, the connection terminal 1 is inserted and connected in the terminal accommodating chamber 22 as in the conventional case, and the waterproof plug 31 in which the electric wire 2 is inserted is pressed into the terminal accommodating chamber 22 of the housing 21. Next, the lids 52 and 53 of the waterproof cover 51 are opened, the electric wires 2 are inserted into the electric wire insertion openings 42 and 42 of the rear holder 41 from the sides thereof, the both lids 52 and 53 are closed, and the electric wires 2 are bundled from the outlet 57. The rear holder 41 is fitted into the holder accommodating chamber 23 of the housing 21, and the assembly is completed.

Even when the waterproof connector assembled in this manner is exposed to the jet of high-pressure water such as when washing a car, the high-pressure water W hits the lid bodies 52 and 53 and flows around the lid bodies 52 and 53 as shown in FIG. Even if the part enters the inside, the pressure is small unlike the direct hit, and the waterproof plug 31 is not deformed. Therefore, it is possible to reliably prevent water from entering the terminal accommodating chamber 22.

In this embodiment, since the electric wires are collectively taken out from the outlet formed by the two lids, the electric wires are easy to handle and the workability is good.

[Advantages of the Invention] As described in detail above, in the present invention, since the waterproof cover is continuously provided so as to cover the outer end surface of the rear holder, it is possible to prevent jetting of high-pressure water from directly hitting the waterproof plug. Therefore, the waterproof plug is not deformed, the electric wire is not damaged, and the terminal accommodating chamber is not flooded. Further, since the waterproof cover is configured to be openable and closable, it is easy to insert and remove the electric wire and the workability is good.

[Brief description of drawings]

FIG. 1 (a) is an exploded perspective view showing an embodiment of the present invention, FIG. 1 (b) is a perspective view showing essential parts of the same, FIG. 2 is a front view explanatory view of the same, and FIG. FIG. 4 is an exploded perspective view of a conventional example, and FIGS. 5 and 6 are cross-sectional explanatory views showing the main part of the same. 2 ... Electric wire 21 ... Housing 22 ... Terminal accommodating chamber 31 ... Waterproof plug 41 ... Rear holder 45 ... Outer end surface 51 ... Waterproof cover

Claims (1)

[Scope of utility model registration request] 1. A housing having a plurality of terminal accommodating chambers,
The waterproof plug press-fitted into the terminal accommodating chamber of the housing, a rear holder mounted on the rear portion of the housing to receive the waterproof plug, and a waterproof cover integrally connected to the rear side of the rear holder, The waterproof cover is characterized in that one end covers at least the rear outer end surface of the rear holder, has a wire outlet on the other end, and is composed of a pair of lids connected to the rear holder so as to be openable and closable. Waterproof type connector.