Mitsubishi Steel Mfg. Co., Ltd.

Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Masayoshi Shimoseki

Seiichi Inukai

Minoru Sawayama

Minoru Shibuya

A coiled disk spring is prepared by closely winding a strip having a noncircular cross section into a coil shape with the face inclined at a predetermined angle with respect to the axis of the coil. The sectional shape of the strip may be appropriately selected in accordance with the intended use and, for example, when it is triangular or trapezoidal, a coiled disk spring having progressive nonlinear characteristics can be obtained. A coiled wave disk spring having progressive nonlinear characteristics can also be prepared by closely coiling the strip while bending the strip into a wavy form in the circumferential direction of the coiled spring.

Coiled disk spring

A coiled wave spring obtained by winding a corrugated wire into a coil shape, wherein mutually overlapping top portions and mutually overlapping base portions of the spring are in mutual contact and predetermined gaps are defined between mutually overlapping slope portions which connect the top and base portions, the first loop of the spring, that is, on the upper side, and the second loop, that is, on the lower side, are in mutual contact in an axial direction thereof only between the top portions and between the base portions, and the gaps are defined between the slope portions to prevent mutual contact. When the spring receives a load and undergoes deformation, the top portions and the base portions come into mutual contact, respectively, but hardly generate friction. Since the gaps are defined between the mutually overlapping slope portions, friction does not occur at these portions, either.

Growing community of inventors

Tokyo, Japan

Masayoshi Shimoseki