| 摘要 |
A hook for a sewing machine comprising a hook body, a bobbin case holder arranged in the hook body, a bobbin case arranged in the bobbin case holder and a bobbin in the bobbin case. The bobbin case holder has a bottom wall from which extends a pin. The pin is provided with resilient check elements. A pin portion extends centrally from a bottom wall portion of the bobbin case defining a hole therein having a shape suitable to provide together with the pin of the bobbin case holder a locking system to lock the bobbin case to the bobbin case holder. A lever is positioned in the hole to ensure locking and release of the bobbin to and from the bobbin case. The bobbin is inserted in the bobbin case so as to close it upwardly. |
