Torque wrench with overload warning mechanism

A torque wrench, comprising:

• a wrench body, comprising a working section and a gripping section coupled to the working section;
• a deformable rod, fixed to the working section and the gripping section respectively by two ends thereof, and comprising a middle section disposed in-between;
• a torque adjustment mechanism, installed on the gripping section, and comprising a knob and an abutting member, and the knob configured to adjust the abutting member to a position proximate to or away from the middle section;
• a switch, installed in the gripping section and disposed between the middle section and the torque adjustment mechanism;
• an alarm, installed on the gripping section and electrically coupled to the switch;
• a fastener, placed and fixed in the gripping section;
• a passive member, movably embedded in the knob and screwed with the fastener, wherein the abutting member is fixed to the passive member, and at least a portion of the abutting member protrudes from the passive member;
• and
• a stop bolt, wherein the passive member comprises an adjusting inner thread, the abutting member comprises an adjusting outer thread disposed on an outer periphery thereof, the adjusting outer thread is screwed with the adjusting inner thread, and the stop bolt is screwed with the adjusting inner thread and fastens the abutting member;
• wherein, when load of the working section is greater than a set torque, the middle section is in a bending deformation toward the abutting member to touch the switch and trigger the alarm to generate a warning signal.