Abstract: The present invention provides a co-axial connector for a high frequency cable which includes a slit in the earth metal fittings. The slit enables the earth metal fittings to be widened and allows insertion of an insulating bushing into the earth metal fittings. After insertion, the slit returns to its home position by the spring tension of the earth metal fittings and retains the insulating bushing by spring tension. This configuration makes assembly easier. Furthermore, after the insertion of the insulating bushing into the earth metal fitting, a shielding cylinder is engaged with the earth metal fittings in order to cover the rear end of the earth metal fittings. This configuration prevents high-frequency signals from leaking, and does not require the widening of the slit, while connected to the other connectors, which loosens the engagement between the earth metal fittings and the insulating bushing.

Abstract: A contact piece for a rotary encoder is an unitary piece having a terminal, a thin plate spring, and a bent-back section on the tip of the thin plate spring. The bent-back section is bent at an angle of approximately 180 degrees in the plane. The contact brush is located on the bent-back section. In one embodiment, the terminal, thin plate spring, bent-back section and contact brush are stamped from the same metal plate. In another embodiment, the terminal, thin plate spring and bent-back section are stamped from the same metal plate and a separate contact brush is connected to the bent-back section. The contact piece is pushed in from the bottom side of the rotary encoder housing, and the contact brush is set such that contact is made with an electrode pattern. When a rotating plate turns, a pulse having a low or high signal is generated. This configuration provides the rotary encoder with an adequately long span S, which can be precisely set and easily produced.