Waterproof connector

• US 10,714,867 B2
• Filed: 07/09/2019
• Issued: 07/14/2020
• Est. Priority Date: 10/09/2018
• Status: Active Grant

• Current Assignee: SMK Corporation
• Original Assignee: SMK Corporation
• Inventors: Koyama, Yuki, Asai, Kiyoshi, Kato, Toshihiko
• Primary Examiner(s): Nguyen, Khiem M
• Application Number:
  US16/505,754
• Publication Number:
  US 20200112120A1
• Time in Patent Office: 371 Days
• Field of Search: 439271-277, 439587, 439660
• CPC Class Codes: H01R 13/22 Contacts for co-operating by abutting
• CPC Class Codes: H01R 13/426 Securing by a separate resilient retaining piece supported by base or case, e.g. collar or metal contact-retention clip
• CPC Class Codes: H01R 13/5202 Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
• CPC Class Codes: H01R 13/521 Sealing between contact members and housing, e.g. sealing insert

Abstract

A waterproof connector capable of maintaining high waterproof properties even under high water pressure is provided. The waterproof connector includes: a connector main body having connection terminals held by a housing; a casing having a connector accommodating portion in which the connector main body is accommodated; and a sealing material fixed to an outer peripheral portion of the housing and preventing water from entering between the housing and the casing. The sealing material includes a peripheral abutting portion configured to abut against an inner peripheral surface of the connector accommodating portion, and a rear abutting portion configured to abut against a rear wall portion of the connector accommodating portion, and the housing includes a sealing material supporting surface configured to support a rear surface portion of the rear abutting portion.

Claims

1. A waterproof connector comprising:

a connector main body having a connection terminal held by a housing;

a casing having a connector accommodating portion in a concave hole shape in which the connector main body is accommodated; and

a sealing material fixed to an outer peripheral portion of the housing and preventing water from entering between the housing and the casing, wherein

the sealing material includes a peripheral abutting portion configured to abut against an inner peripheral surface of the connector accommodating portion, and a rear abutting portion configured to abut against a rear wall portion of the connector accommodating portion, and

the housing includes a sealing material supporting surface configured to support a rear surface portion of the rear abutting portion.

2. The waterproof connector according to claim 1, wherein the rear side abutting portion includes a plurality of contact convex portions having a convex cross-sectional shape, and a groove-like deformation absorbing portion formed between the contact convex portions.

3. The waterproof connector according to claim 1, wherein

the connection terminal is formed in a stepped pin shape having a large diameter portion and a small diameter portion successively formed in the axial direction,

the connection terminal is inserted into the housing from the front side of the housing, and the small diameter portion protrudes from an end surface of the housing and is inserted through an insertion hole formed in any of the rear wall portion and a support plate portion supported on the rear wall portion on a rear surface side, and is locked to an opening edge portion of the insertion hole by a retainer member fixed to the tip of the small diameter portion, so that the connector main body is prevented from coming out from the casing by the retainer member.

4. The waterproof connector according to claim 1, wherein the sealing material is integrally molded with the housing by a liquid silicone rubber material.