Insulated torque wrench

An insulated torque wrench including:

• a main body defining an axial direction and including a work portion, the work portion generating a warning sound when receiving a torque larger than a preset torque value;
• a torque adjustment member being rotatably disposed in the main body, the preset torque value being adjustable by rotating the torque adjustment member;
• a sleeve non-rotatably disposed around the main body and including a first engaging portion and a see-through portion;
• an adjustment assembly including a switching member, a driving member, a first limitation member and a second limitation member, the switching member being rotatably disposed on the main body, the switching member being movable between a first position and a second position in the axial direction relative to the main body, the switching member including a second engaging portion, the switching member being movable in the axial direction relative to the driving member and the first limitation member, the switching member and the driving member being rotatable with each other, the driving member and the torque adjustment member being rotatable with each other, the driving member and the first limitation member being connected to each other in the axial direction, in the axial direction the switching member being blocked by the first limitation member, the second limitation member being connected between the first limitation member and the driving member;
• an insulation layer including an insulated grip and an insulated sleeve, the insulated sleeve being disposed around the main body, the work head being protrusive out beyond the insulated sleeve, the insulated grip being disposed around the switching member, the insulated grip and the switching member being rotatable with each other;
• and
• a torque display assembly including a torque scale displaying barrel and a cover, the torque scale displaying barrel being disposed in the sleeve and rotatable with the torque adjustment member, the torque scale displaying barrel including a plurality of torque scale displaying portions, the plurality of torque scale displaying portions being configured to display torque values in different units respectively, the plurality of torque scale displaying portions being arranged in the axial direction, the plurality of torque scale displaying portions corresponding to the see-through portion, the cover being movably disposed on the sleeve, the cover being movable relative to the sleeve to be in one of a plurality of shielding positions so that the cover shields at least one of the plurality of torque scale displaying portions and so that the rest of the plurality of torque scale displaying portions are revealed;
• wherein when the switching member is in the first position, the second engaging portion is engaged with the first engaging portion so that the sleeve and the switching member are rotatable with each other;
• when the switching member is in the second position, the second engaging portion is disengaged from the first engaging portion.