JPH04351865A - Water proof connector - Google Patents

Abstract

PURPOSE:To improve water proof performance of a wire leading side against super high pressure car wash water and the like in a water proof connector. CONSTITUTION:A rubber plug 8, which is cover fitted to wires 5, is press contacted to the inner periphery of the terminals containing room 6 of a connector housing 7 so as to perform waterproofing. A water proof cover 11, composed of half covers 10A, 10B being free in uniting closing and dissociating, is provided. The half covers 10A, 10B, having drain holes 15 in the inner wall of a middle position thereof, are united and closed so as to be the water proof cover 11, being a single cover body, which includes the back end portion of the connector housing 7 and the leading wires 5 out of the connector housing 7 so as to prevent water penetration into a connector out of the wire 5 leading side.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof connector used in automotive wire harnesses and the like.

0002

[Prior Art] Waterproof connectors are made by press-fitting a rubber plug onto an electric wire into which a terminal is inserted and pulled out from the connector. It has a structure that prevents water from seeping into the connector from the wire extraction side.

0003

[Problem to be Solved by the Invention] Although the above-mentioned waterproof connector with a rubber plug inserted prevents water from seeping in from the wire pull-out side, these days, ultra-high pressure water exceeding 100 Kgf/cm2 is used for washing cars. If this ultra-high pressure water is directly sprayed onto the connector, the rubber stopper described above cannot provide waterproofing, and water may seep into the connector.

[0004] Therefore, as a measure to prevent water from seeping into the connector due to the ultra-high pressure water mentioned above, attempts have been made to cover the rear end of the connector housing and the lead-out wire with a rubber boot. There are defects that are unbearable and impractical.

The present invention provides a waterproof connector that solves the above-mentioned problems.

[0006]

[Means for Solving the Problems] The waterproof connector of the present invention, which solves the above technical problems, has the following features:
A waterproof connector that is press-contacted to the inner periphery of a terminal accommodating chamber to make the inside of the connector waterproof;
Further, a waterproof cover is provided that encloses the rear end of the connector housing and the lead-out electric wire of the connector housing and draws out the electric wire rearward, and further includes a water drain hole communicating with the outside of the cover in the peripheral wall of the waterproof cover. It has become a "structure established".

[0007] As a variation of the waterproof connector having the above structure, a waterproof strip may be provided in the inner cavity of the waterproof cover in a transverse direction of the cover in a direction intersecting the electric wires contained therein; , the waterproof cover is formed integrally with the connector housing via a hinge, or
It may be made separately from the connector housing.

[0008]

[Function] The waterproof connector of the present invention having the above structure includes a waterproof cover that encloses the rear end of the connector housing and the lead-out wire, and has a drain hole, so that ultra-high pressure cleaning water is not sprayed onto the connector. The waterproof cover protects the connector's wire pull-out area, which is prone to water intrusion, and prevents the sprayed water from reaching the rubber stopper and the wire pull-out area with a strong impact force, and the waterproof function of the rubber stopper is maintained. Secured. Even if water seeps through the wire pull-out hole of the waterproof cover due to continuous spraying of the cleaning water, the water will naturally flow down through the drain hole and be drained outside, preventing water from seeping inside the connector. Ru. Further, in the case of the waterproof cover having the above-mentioned waterproof stripes, the force of water that enters the waterproof cover is reduced by the waterproof strips, and the water is prevented from advancing toward the housing, making the waterproofing effect of the waterproof cover even more remarkable.

[0009]

[Example] A detailed explanation will be given below based on an example. First, referring to FIG. 1 showing a first embodiment of the present invention, an electric wire 5
Insert the male terminal 4 crimped onto the tip of the connector into the terminal accommodating chamber 6 of the connector housing 7 and pull out the electric wire 5 backward,
A male waterproof connector 1 in which a rubber plug 8 is fitted onto an electric wire 5, and a seal strip provided around the outer periphery of the rubber plug 8 is pressed against the inner periphery of a terminal accommodating chamber 6 to seal the terminal accommodating chamber 6. In,
A waterproof cover 11 consisting of a pair of half covers 10A10B that can be combined and released is provided at the rear end of the connector housing 7.

For details, refer to the front view indicated by the symbol A and the plan view indicated by the symbol B. It is a resin lid body that can be opened and closed in shape, and when the front edges 13 of each are joined and closed and locked, they are combined to form a single cover body, and the cover body is pulled out from the connector housing 7 into the internal cavity 14. Electric wire 5
It has a structure in which the rear end portion of the connector housing 7 and the rear end portion of the connector housing 7 are enclosed together, and the electric wire 5 is pulled out from the wire extraction hole 16 at the rear end.

A drain hole 15 is formed in the peripheral wall of the half cover 10A10B near the connector housing 7 at an intermediate position, and the cavity 14 and the outside of the cover communicate through the drain hole 15. Water that has entered through the draw-out hole 16 is drained through this drain hole 15.

[0012] The waterproof cover 11 of this embodiment has the following features:
Several waterproof strips 17 are provided to partition the hollow portion 14 in the closed position in the transverse direction (in the direction intersecting the enclosed electric wires 5), and water intrusion from the wire extraction hole 16 is directed toward the terminal accommodating chamber 6. It has a structure that prevents it from progressing. Note that the front edge 13 of the half cover 10A10B has a locking mechanism consisting of an elastic locking piece 18 on one side and a locking claw 19 on the other side, and by engaging and disengaging this locking mechanism, the combined closed position is established. is locked or released.

Furthermore, as shown in FIG. 2, the connector housing 7 of this embodiment includes a locking pin 20 erected on the connector housing 7 near the hinge portion 12, and a half cover 10A.
A locking mechanism for the waterproof cover 11 is provided, which consists of a locking hole 21 inside the half cover 10A, and when the half cover 10A10B is in the closed position, the locking hole 21 and the locking pin 20 fit together, preventing the hinge portion 12 from being damaged. The structure is such that the half cover 10A10B is locked to the connector housing 7 even when the connector housing 7 is connected.

Next, another embodiment of the present invention will be described with reference to FIG. 3 shows a female waterproof connector 2 which is paired with the male waterproof connector 1 of the FIG. 1 embodiment and whose front half parts are fitted together to establish electrical continuity. That is,
A rubber plug 8 is fitted onto the electric wire 5, and a rubber seal ring 22 is fitted around the outer periphery of the terminal housing chamber 6 housing the female terminal 3, and the front end of the male waterproof connector 1 is inserted through the seal ring 22. In the female waterproof connector 2 that waterproofly receives the hood portion 23 of the connector housing 7, a waterproof cover 11 consisting of a half cover 10A10B, which is the same as the embodiment in FIG. 1, is provided at the rear end of the connector housing 7.

The female waterproof connector 2 is a sealed type in which the connector housing 7 does not have a locking hole or the like for locking the insertion position of the seal ring 22 in order to prevent water from entering when the seal ring 22 is inserted. A separate spacer 24 for inserting and locking the seal ring 22 is attached to the housing.

In the above-described waterproof connector shown in FIGS. 1 and 3, after the terminal is inserted into the terminal housing chamber 6, the half cover 10A10B is closed and locked to enclose the electric wire 5 and the rear end of the connector housing 7 and insert the terminal into the connector housing 7. It is locked, and the waterproof cover 11 is set on the wire extraction portion.

[0017]

[Effects of the Invention] As explained above, the waterproof connector of the present invention prevents water from entering the connector from the wire pull-out side even when ultra-high pressure car body cleaning water is sprayed, and
This has the effect of stabilizing the function of the rubber plug in the terminal housing chamber and further stably improving waterproof performance.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a waterproof connector according to a first embodiment of the present invention.

[
FIG. 2 is an explanatory diagram of the locking mechanism of the waterproof cover in the embodiment shown in FIG.

FIG. 3 is an explanatory diagram of a waterproof connector according to another embodiment of the present invention.

[Explanation of symbols]

1 Male waterproof connector 2 Female waterproof connector 5 Electric wire 6 Terminal accommodation chamber 7 Connector housing 8 Rubber stopper 10A Half cover 10B Half cover 11 Waterproof cover 12 Hinge part 13 Front edge of half cover 14 Cavity part 15 Drain hole 17 Waterproof strip 20 Locking pin 21 Locking hole 22 Seal ring 24 Spacer A Front view B. Floor plan

Claims (3)

[Claims] Claim 1: A waterproof connector in which a rubber plug fitted over an electric wire is press-contacted to the inner periphery of a terminal accommodating chamber to make the inside of the connector waterproof. A waterproof cover is provided which is locked to the end of the connector housing, encloses the rear end of the connector housing and the lead-out electric wire of the connector housing, and pulls out the electric wire rearward, and further includes, on a peripheral wall of the waterproof cover,
A waterproof connector characterized by a structure with a water drain hole that communicates with the outside of the cover. 2. The waterproof connector according to claim 1, wherein the waterproof cover comprises a pair of opposing half covers integrally formed with the connector housing via a hinge portion at the rear end of the connector housing. 3. The waterproof connector according to claim 1, wherein a waterproof strip is provided on the inside of the waterproof cover in a transverse direction intersecting the enclosed electric wire.