To provide an auxiliary device for opening/closing a gate of a loading space capable of enhancing the assembling performance by attaching the auxiliary device to a truck to dispense with adjustment of elastic force of the auxiliary device.
An auxiliary device 6 for opening/closing a gate 5 openably and closably attached to a loading space 2 of a truck by a hinge 4, is provided with an auxiliary device main body 10 attached to the truck, an arm 13 fixed to the gate 5, an elastic member 21 attached to the auxiliary device main body for imparting the arm 13 the auxiliary opening/closing force, and a holding means 25 for holding the elastic member 21 in a compressed state so as to obtain proper auxiliary force before assembling, and releasing this holding state after the assembling to transmit the auxiliary force to the arm 13.
MARUYAMA HISANAO
SAKAGAWA TAKESHI
PRESS KOGYO KK