Collapsible security storage apparatus for truck beds

A collapsible security storage apparatus for use in combination with a truck bed having right and left inner side walls, a front side wall, a rear tailgate having raised and lowered positions, and a floor, said security storage apparatus comprising:

• (a) first and second rectangular rigid panel members positioned within said truck bed and extending between said right and left inner side walls, each said panel member having first and second longitudinal edges and right and left edges interjacent said longitudinal edges;
• (b) means for hingedly mounting said first longitudinal edge of said first panel to said truck bed floor;
• (c) means for hingedly securing said second longitudinal edge of said first panel to said first longitudinal edge of said second panel;
• (d) track means adapted to receive said second panel member, said track means being mounted on said right and left inner side walls, said track means comprising right and left brackets mounted on said right and left inner sidewalls, respectively, each of said brackets including first and second legs meeting at approximately a right angle, said first leg being secured to either of said right or left inner side walls, and said second leg receive either of said right or left edges of said second panel member whereby said second panel member is extendable to be received by said track means, with said first and second panel members forming front and top sides, respectively, of a second storage compartment, said truck bed floor forming a floor, and said right and left inner side walls forming right and left sides, respectively, of said security storage compartment;
• (e) said second panel member being dimensioned such that said right and left sides of said second panel member are sufficiently close to said track means when said second panel member is received by said track means to prevent purchase between said track means and each of said right and left sides of said second panel member;
• (f) said second panel member including means for releasably latching said second panel member to said rear tailgate when said rear tailgate is in said raised position;
• and
• (g) adjusting means for lengthening or shortening the longitudinal dimension of second panel mounted on the right and left edges of said second panel member, respectively, wherein said adjusting means comprises a generally "T"-shaped adjusting bracket having generally coplanar first and second legs and a third leg generally perpendicular to said first two legs, and said track bracket second leg includes a flange extending at approximately a right angle from said second leg to form a channel with said track bracket first leg receiving said adjusting bracket third leg whereby said right and left sides of said second panel member may be adjusted to be sufficiently close to said track means to prevent purchase between said second panel member and said track means.