Slider for double-sided slide fastener with automatic locking device

A slider for a double-sided slide fastener with an automatic locking device, comprising:

• a body, having a first body, a second body opposed to the first body, and a third body connected to the first body and the second body, wherein the first body, the second body, and the third body define a space;
• an operating member, attached to the body, and having a first member being parallel to the first body and formed with a first groove and a second member being parallel to the second body and formed with a second groove, the operating member adapted to slide on the first body and the second body in a direction;
• a pawl member, being in the body, and having a locking pawl configured to retractably project to the space in accordance with a sliding operation of the operating member;
• a first pull-tab, attached to the first groove;
• and
• a second pull-tab, attached to the second groove, wherein
• a shaft portion of the first pull-tab can abut against an end portion of the first groove in the direction,
• a shaft portion of the second pull-tab can abut against an end portion of the second groove in the direction,
• a position of the end portion of the first groove and a position of the end portion of the second groove are shifted with each other in the direction,
• the third body of the body includes a first part close to the first body and a second part close to the second body,
• the third body has a curved shape and a curvature of the first part and a curvature of the second part is different from each other,
• the operating member has a third member connected to the first member and the second member,
• the third member includes a third part close to the first member and a fourth part close to the second member,
• the third member has a curved shape and a curvature of the third part and a curvature of the fourth part is different from each other;
• wherein the third body of the body includes a sliding groove,
• the operating member has a third member connected to the first member and the second member,
• the third member includes a sliding concave portion having a thickness substantially equal to that of each of the first and second grooves and adapted to fit into and slide in the sliding groove;
• and
• wherein the end portions of the first and second grooves and the sliding concave portion are non-continuously connected to each other.