US Patent 10308475 Switching mechanism for traction device

A switching mechanism for traction device is provided, including: a push-pull button 1, a push-pull button decoration ring 2, a switching button 3, a reset spring 4, a right shell 5, a reel 6 and a left shell 7; wherein the push-pull button decoration ring 2 is sleeved on the push-pull button 1, in such a manner that the push-pull button 1 is fitted with a cambered surface of the left shell 7 and a cambered surface of the right shell 5; the switching button 3 is sleeved in the push-pull button 1; the push-pull button 1, the push-pull button decoration ring 2 and the switching button 3 form an integrated unit and are provided on the right shell 5 and the left shell 7. Sealing treatment is performed, in such a manner that deep hole directly entering internal part of the products is prevented.