Rapid adjustable wrench

A rapid adjustable wrench comprising:

• a body having a handle and a fixed jaw opposite to the handle, wherein the body defines a first side and a second side opposite to the first side, wherein the body includes a sliding groove and a containing recess disposed between the first and second sides, wherein the sliding groove is adjacent to the fixed jaw, wherein the containing recess is communicated with the sliding groove and disposed opposite to the fixed jaw, wherein the containing recess includes an external portion adjacent to the sliding groove and an internal portion connected to one side of the external portion opposite to the sliding groove, wherein the containing recess has a pivoting portion connected to one side of the external portion adjacent to the first side;
• a movable jaw including a sliding portion and a first toothed portion adjacent to the sliding portion, wherein the sliding portion is movably arranged in the sliding groove so that the movable jaw is movable closer to or away from the fixed jaw;
• and
• an engaging device including an engaging member and a toggle switch, wherein the engaging member is arranged in the external portion of the containing recess and has a second toothed portion, wherein one end of the toggle switch is connected to the engaging member and the other end of the toggle switch protrudes out from the first side, wherein the toggle switch is able to drive the engaging member to move between an engaging position and a releasing position, wherein the engaging device further includes a biasing member disposed on one side of the engaging member opposite to the movable jaw and located in the internal portion, and wherein the biasing member normally biases against the engaging member to the engaging position, wherein the engaging member is connected with a pivotal stem inserting into the pivoting portion, wherein the engaging member and the toggle switch synchronously rotate about the pivotal stem when the engaging member is moved between the engaging position and the releasing position;
• wherein when the engaging member is in the engaging position, the second toothed portion is engaged with the first toothed portion and the movable jaw cannot move away from the fixed jaw;
• wherein when the engaging member is in the releasing position, the second toothed portion is disengaged from the first toothed portion, and the movable jaw can arbitrarily move to closer to or away from the fixed jaw.