the present invention discloses an internal safety structure for toasters comprising a circuit board , a motor , a lifting rack and others . the motor is a low voltage direct current motor driving the lifting rack to move upwards or downwards through a set of gears , a set of clutch gears and a driving gear bar . on the circuit board , an upper sensor and a lower sensor are installed to sense the lifting level of the lifting rack , and a transformer is installed to reduce the voltage of alternating current of power to the circuit board and the motor through a set of diode rectifiers changing alternating current to direct current . the present invention is of simple and reliable construction , susceptible of low production costs and consumes low energy . it is economical and durable and produces less noise .