Sumitomo Wiring Systems, Limited

Other

Kabushiki Kaisha Tokai Rika Denki Seisakusho

Keiichi Itou

Masanori Wakui

Kazuyuki Shiraki

Shigekazu Wakata

Atsushi Nishida

Masaaki Tabata

Toshifumi Ichio

Masahiko Aoyama

Hiroshi Nakano

Masato Minakata

Eiji Kojima

Hideki Matsunaga

Kouji Nemoto

Shigeru Hayashi

Tetsuya Hattori

Hirotaka Noguchi

Kiyokazu Takada

Toshiaki Kohno

Atushi Nishida

Noriaki Sai

A connector includes a connector body and bases formed on the lower surface of the connector body. When the connector is fixed to a printed board, a part of each base or the lower surface of the connector body contacts the surface of the printed board in accordance with the thickness of the board. Therefore, the connector can be fixed to any one of printed boards having different thicknesses with common fixing pins.

Connector and fixing structure of connector and board

A connector ( ) has a holder ( ), auxiliary connectors ( ) and a retainer ( ). The retainer ( ) has slanted surfaces ( A) and a vertical wall ( A). The slanted surfaces ( A) engage an opening-end surface ( A) of a mating connector ( ) to guide the retainer ( ) into a proper position if the auxiliary connectors ( ) are inserted to proper positions. However the vertical wall ( A) contacts the opening-end surface ( A) if the auxiliary connectors ( ) are not pushed to the proper positions. Thus, the fitting operation cannot be completed and the improperly inserted auxiliary connector ( ) is detected.

Connector and a connector assembly

There is provided a male contact having improved electrical contact reliability with a female contact. The male contact has a mating section capable of being formed compactly using a plate member having a plate thickness satisfying a desired strength requirement. The male contact has a mating section formed in such a manner that two plate members and , which individually extend from a base , are superimposed on one another by folding on the base . The mating section has flat sections extending in a mating direction P, wherein outer surfaces of the two plate members - and - are formed flat. A tip of one of the two plate members is folded to overlap a tip of the other plate member . This feature makes it hard to open the plate members and when the male contact is mated with the female contact.

Male contact

A waterproof resilient plug ( ) has a trunk portion ( ) to be brought into close contact with the inner circumferential surface of a terminal insertion hole (C) and a fixing portion ( ) extending from the leading end of the trunk ( ) and to be pressed against the outer circumferential surface of a wire (W) by insulation barrels ( ). The plug ( ) is formed along its longitudinal axis with a wire insertion hole ( ) that can be brought into close resilient contact with the outer surface of the (W). An inner diameter of the wire insertion hole ( ) aligned with the fixing portion ( ) is smaller than the one at the side of trunk ( ), whereby the fixing portion ( ) can be held strongly in close contact with the outer surface of the wire (W).

Waterproof resilient plug to provide sealing between a wire and a housing

A terminal cap ( ) is provided to prevent erroneous use of a booster cable to connect batteries that have different specifications. The terminal cap ( ) is mounted to cover a battery terminal (T) to be connected with one of electrodes of a 32V-battery. The terminal cap ( ) has protection walls ( ) that extend from a first accommodating portion ( ) for accommodating a connecting portion ( ) of the battery terminal (T). The protection walls ( ) are formed to be higher than a threaded shaft ( ) of the electrode. Thus, even if an attempt is made to erroneously connect a booster cable, the protection walls ( ) will interfere with the booster cable and prevent connection with the electrode located inside the protection walls ( ).

Construction and a terminal cap for preventing an erroneous connection

Cavities capable of housing terminal fittings connected with the ends of electric wires W are provided inside of a housing. A rear assembly is assembled at the rear of the housing. The rear assembly includes a cover formed of a quality of material having no elasticity and a waterproof member formed of a quality of material having elasticity. The waterproof member further includes a wire seal part that surrounds and waterproofs electric wires, and a housing seal part that seals between the two housings. A clearance is provided about a periphery between the outer peripheral face of the wire seal part and the housing seal part. Even if the material of the wire seal part is deformed during the insertion operation of the electric wires, the insertion operation of the electric wires can be smoothly carried out to the last wire because the clearance absorbs the deformation of the entire wire seal part.

Waterproof connector

A connector has a housing ( ) with cavities ( ) for accommodating both crimping and insulation-displacement terminal fittings ( ). Locks ( ) extend into the cavities ( ) to elastically engage the terminal fittings ( ). A retainer mount opening ( ) extends through an outer wall of the housing ( ) and communicates with the cavities ( ), and a retainer ( ) is mounted in the opening ( ) for doubly locking the terminal fittings ( ). Connecting portions ( ) of the same shape are provided at the front of the terminal fittings ( ). The height of insulation-displacement portions ( ) is shorter than that of the connecting portion ( ) in the insulation-displacement terminal fitting ( ), and terminal locks ( ) of the retainer ( ) engage with steps ( A) at the rear of the connecting portions ( ). The retainer ( ) can be pushed to a full locking position after the terminal fittings ( ) are mounted with the housing ( ) to redundantly lock the terminal fittings ( ) in the cavities ( ).

Connector and a set of terminal fittings

A battery (B) includes electrodes ( ) and engaging portions ( ) formed by recessing portions of the battery (B) around the electrodes ( ), and recesses ( ) are formed in side surfaces of the engaging portions ( ). The recesses ( ) are symmetrically arranged in the left and right engaging portions ( ). Transversely symmetrical identification pieces ( ) project from the leading ends of terminals ( ). In the case of a correct correspondence of the electrodes ( ) and the terminals ( ), the identification pieces ( ) fit into the recesses ( ), enabling assembling of the terminals ( ) with the electrodes ( ). In the case of an incorrect correspondence, the identification pieces ( ) cannot be fitted into the recesses ( ) and interfere with the upper surface of the battery (B), making assembling impossible.

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Toyota, Japan

Keiichi Itou