Waterproof connector

Patent metadata

Field	Value
Publication number	US-9570839-B2
Application number	US-201514935520-A
Country	US
Kind code	B2
Filing date	Nov 9, 2015
Priority date	Dec 1, 2014
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

A seal ( 40 ) includes an annular portion ( 41 ) to be fit externally on a housing main body ( 11 ) and resiliently sandwiched between the housing main body ( 11 ) and a receptacle ( 71 ) when two housings ( 10, 70 ) are connected and projections ( 42 ) protruding radially out after projecting back from the annular portion ( 41 ) and configured such that protruding parts thereof resiliently contact the tip of the receptacle ( 71 ) when the two housings ( 10, 70 ) are connected. The housing ( 10 ) includes deformation guides ( 24 ) configured to deform the seal ( 40 ) such that a radially outward protruding amount of the projections ( 42 ) gradually increases by sliding on the projections ( 42 ) in the process of moving the annular portion ( 41 ) externally fit on the housing main body ( 11 ) toward a proper mounted position.

First claim

What is claimed is:

1. A waterproof connector, comprising:
a housing including a main body fittable into a receptacle of a mating housing; and
a seal including an annular portion to be fit externally on the main body from a front of the main body and being resiliently sandwiched in a radial direction perpendicular to a front-back direction between the main body and the receptacle when the two housings are connected and two circumferentially spaced projections projecting back from opposite positions on the annular portion, a rear end of each of the projections remote from the annular portion defining a radially protruding part that protrudes radially out, the radially protruding parts having forwardly facing surfaces that resiliently contacts the tip of the receptacle in the front-back direction when the two housings are connected;
wherein the housing includes a deformation guide curved out and configured to deform the projections of the seal radially out such that a radially outward protruding amount of the projection gradually increases by sliding on the deformation guide while rearwardly moving the annular portion externally on the main body toward a proper mounted position.

2. The waterproof connector of claim 1 , wherein the deformation guide includes a slant curved radially outwardly.

3. The waterproof connector of claim 2 , wherein the radially protruding part of each of the projections includes a backlash preventing portion projecting forward and capable of contacting the tip of the receptacle in a state where the annular portion reaches a proper mounted position on the main body.

4. A waterproof connector, comprising:
a housing including a main body, a fitting tube spaced out from the main body, a coupling connecting a rear end of the fitting tube to the main body and a forwardly open connection space between the main body and the fitting tube for receiving a tubular receptacle of a mating housing, the coupling defining a closed rear end of the forwardly open connection space; and
a seal including an annular portion fit in the forwardly open connection space and engaged sealingly around an outer surface of the main body so that the annular portion of the seal is sandwiched resiliently in a radial direction perpendicular to a front-back direction between the main body and the receptacle when the two housings are connected, two circumferentially spaced projections projecting back from opposite positions on the annular portion, a rear end of each of the projections remote from the annular portion defining a radially protruding part that protrudes radially out toward the fitting tube and engages against a forwardly facing surface of the coupling between the main body and the fitting tube, the radially protruding parts having forwardly facing surfaces, and the forwardly facing surface of each radially protruding part includes a backlash preventing portion projecting forward and capable of contacting a tip of the receptacle in a state where the annular portion reaches a proper mounted position on the main body.

5. The waterproof connector of claim 4 , wherein the housing includes a deformation guide curved out and extending from the main body to the coupling and configured to deform the projections of the seal radially out such that a radially outward protruding amount of the projection gradually increases by sliding on the deformation guide while rearwardly moving the annular portion externally on the main body toward the proper mounted position.

6. The waterproof connector of claim 4 , wherein inwardly facing surfaces of the projections are formed with rib-like fittings between the annular portion and the radially protruding parts and the main body of the housing has fitting recesses that engage the rib-like fittings when the annular portion of the seal is in the proper mount position.

Assignees

• Sumitomo Wiring Systems

Inventors

• Hashimoto Norihito

Classifications

• H01R13/5202 Primary

  Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings · CPC title

• H01R13/5219 Primary

  Sealing means between coupling parts, e.g. interfacial seal · CPC title