Drawer apparatus

A drawer apparatus comprising:

• a hollow housing having a front frame with at least one open front surface, an upper wall and a bottom wall with an open edge portion;
• a tray slidably retained in said hollow housing and having a tray body with a rear portion and a recessed portion for storage, said tray being entered or drawn out from said housing through the open front surface thereof;
• urging means for urging said tray in a direction in which said tray protrudes from the open front surface of said housing;
• locking means disposed inside said housing for locking said tray to a position where said tray is accommodated in said hollow housing against urging force of said urging means;
• and
• restriction means disposed inside said housing for restricting maximum protruding position of said tray,
• wherein said urging means includes a constant-pressure spring for providing a contracting force and for urging said tray to move in the direction in which said tray protrudes from the open front surface of said housing due to the contracting force of said urging means, a spool to which one end portion of said constant-pressure spring is fixed and around which said constant-pressure spring is wound, said spool being pivotally fixed to said tray, and a hook foxed to the other end portion of said constant-pressure spring, said hook being hooked to the open front edge portion of the bottom wall of said housing, said front frame having an opening through which said tray is entered or drawn out from said housing, said front frame having a retaining portion which faces the open front edge portion of said bottom wall of said housing with the hook provided on the other end portion of said constant-pressure spring.