Hand tool with reliable connections

A hand tool with reliable connections, comprising:

• a working unit having a working end and a handle end opposite to the working end;
• a handle being mounted on the handle end of the working unit and having a working unit end and a knocking unit end;
• a knocking unit mounted on the knocking unit end of the handle;
• wherein a connecting part between the knocking unit and the handle end of the working unit is a contacting surface, the handle end or the contacting surface being configured as a deformable and non-rigid contact, realizing the reliable connection between the working unit and the knocking unit;
• wherein at least one of the contacting surface and the handle end is configured to be tooth-shaped, the tooth-shape can be deformed so as to form a gapless engagement with the contacting surface;
• wherein the knocking unit has a tongue part having a recess for accommodating part of the handle end, a closed end of the recess being the contacting surface;
• and
• wherein the handle end has a turnup part, a through hole engaged with the turnup part is configured on the tongue part of the knocking unit, and the working unit and the knocking unit are fixedly connected by the turnup part and the through hole.