Yazaki Corporation

Ryo Fujikawa

Masanori Onuma

Yoshitaka Ito

Takahiro Yudate

Takahiro Matsuo

A first contact part in which three or more first indent parts are projectingly provided on the same circumference and a second contact part in which one second indent part is projectingly provided, in a terminal insertion process, the first indent part of the first contact part slides on the second contact part and the second indent part of the second contact part slides on the first contact part, and at a terminal insertion completion position, the second indent part intrudes into a position surrounded by the three or more first indent parts and outer circumference surfaces of the first indent parts come into contact with outer circumference surfaces of the second indent part, respectively.

Contact-connection structure

A connector includes a mat seal in which lips are protruded from an inner circumferential surface of a wire insertion hole, and a terminal to which an electric wire is connected and which has a cylindrical body to be inserted a mating terminal. The terminal is accommodated in a position that passes through the wire insertion hole, and the electric wire is arranged in a press-fitted state in the wire insertion hole. When a curvature radius of an edge part of the cylindrical body that contacts to the inner circumferential surface of the wire insertion hole in a process of passing through the wire insertion hole is denoted by Rand a compression ratio of the lip in the process of passing through the wire insertion hole is denoted by CR, the curvature radius Ris set based on a formula of difficulty of mat seal breakage =f(R/CR).

Connector

The first projecting portion () which is situated close to the entrance of the lock hole () imparts a reaction force to the lock arm () from therebehind so as to push the lock arm () towards the second projecting portion (). Therefore, the engagement force of the permanent locking projection () on the lock arm () with the second projecting portion () on the lock hole can be enhanced, thereby making it possible to enhance the lock holding force. In addition, without the pressure imparted from the first projecting portion () to a back of the lock arm (), the lock arm () would flex about the proximal end portion thereof, as a fulcrum, which is a support portion where to support the lock arm () which is the cantilever-shaped arm.

Resin molded parts lock mechanism

A mounting structure of a connector for a circuit board is provided. A circuit board is formed with a cutout, the cutout has a rectangular shape which is defined by three rectilinear side edges and one side edge is open, and one of the three side edge is a terminal arranging side edge part. Terminals are provided in the terminal arranging side edge part and are arranged along a longitudinal direction of the terminal arranging side edge part. A connector housing is formed with terminal containing grooves on a lower face thereof. The terminals are respectively contained in the terminal containing grooves when the connector housing is fitted into the cutout. By fitting the connector housing into the cutout, the terminals are contained in the terminal containing grooves, thereby to construct the connector for the circuit board in which the terminals are used as connector terminals.

Growing community of inventors

Shizuoka, Japan

Ryo Fujikawa