Patent ID: 7784728

Claim:
A rotation control device for pet leash comprising: a casing, a cover, and a wheel disposed in said casing, wherein a locking button, an unlocking button, and a self lock slider are provided on said case, and are connected with a locking spring, an unlocking spring, and a self lock spring respectively, wherein said casing comprises an unlocking column and a locking column, and has an unlocking sliding groove and a self lock sliding groove, and said unlocking button has an unlocking retaining hole having a position corresponding to said unlocking column on said casing, said unlocking button includes an unlocking retaining pole inserted into said unlocking sliding groove of said casing, said locking button has a locking retaining rectangular hole having a position corresponding to said locking column on said casing, and said self lock slider includes a self lock retaining pole inserted into said self lock sliding groove in said casing, wherein said self lock retaining pole is resting against said unlocking retaining pole.