Origin Company, Limited

Taro Isobe

Shunichi Watanabe

Watanabe Shunichi

Provided is a novel producing method for enabling to easily produce a high-quality joint member by powder metallurgy, where the joint member has a male engaging portion and a female engaging portion arranged coaxially at different positions in the axial direction. A male member () having a male engaging portion () and a female member () having a female engaging portion () are formed separately by powder metallurgy, and then, the male member () and the female member () are combined in a relatively non-rotatable manner.

Method for producing a joint member, and a method for producing an angular position holding apparatus by using a joint member produced by the producing method

A small and compact rotation transmitter includes a torque limiter and an angular position holding apparatus. An outer race member is installed in a housing, and a coil spring is mounted on the outer peripheral surface thereof. Inside the outer race member, an internal space is formed, and an inner race member is installed concentrically with the outer race member. In the annular space between the outer and inner race members, a thin-plate elastic piece is pressed against the outer and inner race members, and either the outer or inner race member is connected to an input-side device while the other is connected to an output-side device. Even without rotation torque, the position of the output-side device is held by the coil spring. When the rotation torque from the input-side device becomes excessive, slippage occurs on the thin-plate elastic piece, whereby the outer and inner race members are disconnected.

Angular position holding apparatus with overload prevention system

A bidirectional torque limier, which allows setting a slip torque for a case of inputting rotation from a driving part to be smaller than a slip torque for a case of inputting rotation from a driven part. The force of an external coil spring () to clamp an outer race () is set smaller than the force of an internal coil spring () to clamp an inner race (), so that the external coil spring () increases its diameter to slip with respect to the outer race () when a rotation torque is applied from the driving part, while the internal coil spring () increases its diameter to slip with respect to the inner race () when a rotation torque is applied from the driven part.

Bidirectional torque limiter

A bidirectional torque limiter between an inner race and an outer race. A first hook portion () of a first coil spring () and a second hook portion () of a second coil spring () are to be fixed by an intermediate race () and an outer race (), respectively.

Growing community of inventors

Saitama, Japan

Taro Isobe