Yazaki Corporation

Takuya Kitamura

Masanori Tsuji

Motohisa Kashiyama

Sakai Yagi

Seiji Koumatsu

A method of manufacturing a waterproof connector housing, that enables the formation of a uniform packing ring which is an integral part of the housing by engaging a hollow body of a housing with a trapezoidal engaging portion provided on a male mold, holding the housing by contacting tightly an inner wall of the hollow body with the trapezoidal engaging portion to align the center of the male mold with that of the housing, and injecting a rubber material into a packing ring forming space uniformly defined by one of both of the male and female mold through a rubber supply paths of the housing. The housing having the hollow body with tapered shoulder, a male mold having the trapezoidal engaging portion and a female mold beveled or thinned at the open edge are employed for implementing the method.

Housing having protrusions to bind with molds for molding integral

Method of manufacturing a waterproof connector housing

A connector in which a wire-arranging operation before attachment of a rear holder can be omitted, while securing the function of preventing rearward withdrawal of terminals, thereby enhancing the efficiency of a connector-assembling operation. In the connector, wires are extended outwardly from a rear open portion of a connector housing, and a rear holder for preventing rearward withdrawal of terminals is attached to the rear open portion. The rear holder is slid in a direction perpendicular to a direction of extending of the wires to be attached to the rear open portion, and arranging walls are formed on the rear holder, and extend in the direction of sliding of the rear holder. When the rear holder is attached to the rear open portion, each of the arranging walls is passed between the corresponding ones of the wires extended outwardly from the rear open portion. In the connector, preferably, when the rear holder is attached to the rear open portion, the arranging walls are abutted respectively against rear ends of rubber plugs fitted respectively in terminal receiving chambers. In the connector, preferably, a wire-bending cover for bending the wires is mounted on the rear holder.

Connector with rear holder

A lock release structure of a connector (23) for locking a male connector (21) with a female connector (27) having a lock portion (51) includes: a lock arm (33) formed in an outer surface of the male connector and having a lock projection (49) engaged with the lock portion (51) of the female connector when both the male and female connectors are locked with each other; and two lock release operation walls (39) formed on both sides of a free end (35) of the lock arm (33). Each of the lock release operation walls is formed with an inner lock engagement release surface (43) brought into contact with one of two free end side surfaces (37) of the lock arm, when the lock release operation walls are depress toward each other, to deform the lock arm by a predetermined distance and thereby to release the lock projection of the lock arm from the lock portion (51) of the female connector. The lock arm can be prevented from being released by an inadvertent external force and is protected from an excessive external force.

Lock release structure of connector

A connector housing assembly used for connection in an electrical wiring and having a pair of connector housings capable of being fitted to each other. A locking arm is provided on one of the pair of connector housings, while a lock hook capable of receiving the locking arm is provided on the other connector housing. The locking arm extends in the direction of fitting of the connector housings and forms a free end portion at its fitting end. The locking arm has an engagement projection and an operating lever extending in the direction opposite to the direction toward the free end. To detach the connector housings from each other, the operating lever is moved upward to be rotated on a fulcrum so as to downwardly move the free end portion of the locking arm, thereby unlocking the locking arm. Thus, a locking arm having an operating lever is provided to form a lock mechanism improved in handling, which enables a pair of connector housings to be easily fitted to or detached from each other.

Growing community of inventors

Haibara-gun, Japan

Takuya Kitamura