Rotary connecting structure and rotary coupler
AssigneeYKK Corporation
InventorRyoichiro Takazakura
Life of this patent
Estimating the term…
Abstract
A halter snap includes a hook member serving as a primary molded product and a holder member serving as a secondary molded product, the hook member and the holder member being injection-molded from resin and rotatably coupled to each other. The primary molded product includes a shaft formed irreducible in diameter. The secondary molded product includes a bearing portion coupled to the shaft and formed unincreasable in diameter. The shaft is configured to rotate after being moved in an X-axis direction from a state where the shaft is contact-coupled to the bearing portion. The hook member and the holder member include POM.
Claims13
A rotary coupling structure comprising a primary molded product and a secondary molded product, the primary molded product and the secondary molded product being injection-molded from resin, the primary molded product and the secondary molded product being rotatably coupled to each other, wherein
- the primary molded product comprises a shaft,
- the secondary molded product comprises a bearing portion coupled to the shaft,
- the shaft is configured to rotate after being moved from a state where the shaft is contact-coupled to the bearing portion,
- a distal portion of the shaft comprises a first guide circumferential portion having a first end and a second end, the first guide circumferential portion extending in a circumferential direction around an axial center of the shaft in an inclined manner such that the first end and the second end are at different positions in the axial direction, and
- the bearing portion comprises a second guide circumferential portion in a complementary shape fittable to the first guide circumferential portion.
A rotary coupler comprising a hook member and a holder member, the hook member and the holder member being injection-molded from resin, wherein
- the hook member comprises a shaft formed irreducible in diameter,
- the holder member comprises a bearing portion formed unincreasable in diameter,
- the shaft is configured to rotate after being moved from a state where the shaft is contact-coupled to the bearing portion,
- in a state where the shaft is rotatable with respect to the bearing portion, a gap in an axial direction of the rotary coupler between the hook member and the holder member is smaller than 0.5 mm,
- a distal portion of the shaft comprises a first guide circumferential portion having a first end and a second end, the first guide circumferential portion extending in a circumferential direction around an axial center of the shaft in an inclined manner such that the first end and the second end are at different positions in the axial direction, and
- the bearing portion comprises a second guide circumferential portion in a complementary shape fittable to the first guide circumferential portion.
Dependencies are inferred from the claim text.