| 摘要 |
A rotation control device for pet leash includes a casing, a cover, and a wheel disposed in the casing. The casing includes a locking button, an unlocking button, and a self lock slider connected with a locking spring, an unlocking spring, and a self lock spring respectively. The unlocking button has an unlocking retaining hole having a position corresponding to an unlocking column on the casing. The unlocking button includes an unlocking retaining pole is inserted into an unlocking sliding groove of the casing. The locking button has a locking retaining rectangular hole having a position corresponding to a locking column on the casing. The self lock slider includes a self lock retaining pole is inserted into a self lock sliding groove in the casing, wherein the self lock retaining pole is against an unlocking retaining pole.
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