Adjustable spanner capable of adjusting size of an opening rapidly

An adjustable spanner capable of adjusting size of an opening rapidly comprising:

• a handle having a head and a fixing jaw;
• the handle having a sliding groove and a sliding path;
• the sliding path being at a hole communicated to the sliding groove and penetrated through the head;
• an inner sliding path being extended with a shoulder;
• a movable jaw having a guide portion at one end thereof;
• a lower side of the guide portion having a teeth portion;
• the guide portion being received in the sliding groove so that the movable jaw being movable along the sliding groove;
• a sliding block movable along a direction approach to or away from the movable jaw;
• the sliding block being installed in the sliding path;
• the sliding block having a teeth portion at a position near the movable jaw and an elastic unit at a position far away from the movable jaw for engaging the teeth portion of the sliding block and the teeth portion of the movable jaw;
• and
• at least one pressible unit having a connecting unit and an operation portion;
• the connecting portion being connected to the sliding block;
• and the operation portion being at one side of the handle;
• an inner side of the pressible unit having a buckling unit for resisting against a surface of the shoulder of the sliding path;
• and
• wherein the buckling unit is a spring and a steel ball.