Tool box assembly

A tool box assembly comprising:

• multiple tool boxes;
• wherein:
• each of the tool boxes includes a first body, a first receiving portion, two first locking units, a second body, three second locking units, a third locking unit, and a fourth locking unit;
• the first body has a shape of a case or box and is used to receive hand tools;
• the first body is a tool box structure or tool case structure or cabinet;
• the first receiving portion is mounted on the first body;
• the first receiving portion is located at a middle position of a front side of the first body;
• the first receiving portion and the first body are formed integrally;
• the first receiving portion is provided with a first receiving recess having an open bottom;
• the first receiving portion is provided with an opening connected to the first receiving recess;
• the opening is directed upward;
• the two first locking units are mounted on a bottom of the first body;
• each of the two first locking units is provided with a projecting piece;
• the projecting piece has two sides each provided with at least one first locking portion;
• the projecting piece has another side provided with a first restriction portion misaligning with the first receiving portion;
• the first locking portions at the two sides of the projecting piece and the first restriction portion are arranged at three sides of the projecting piece;
• the second body is assembled with the first body, covers the first body, or is pivotally connected with the first body;
• the second body and the first body are opened or closed;
• the second body is a cover;
• the second body has a shape matching that of the first body;
• the three second locking units are mounted on a side of the second body and are arranged linearly;
• a middle one of the three second locking units aligns with the first receiving portion, and other two of the three second locking units misalign with the first receiving portion and align with the first restriction portions of the two first locking units;
• each of the three second locking units is provided with a second receiving recess;
• the second receiving recess has two sides each provided with a second locking portion;
• the second receiving recess has an open front having two sides each provided with a first inclined face;
• the first inclined face expands outward from the second receiving recess and aligns with the second locking portion;
• the third locking unit is locked on the two first locking units so that the second body and the first body are assembled and cannot be detached from each other;
• the third locking unit is provided with a receiving space receiving the two first locking units;
• the receiving space of the third locking unit is provided on a top face of the second body;
• the receiving space has two sides each provided with at least one third locking portion;
• the at least one third locking portion has a side provided with a fourth locking portion connected to the at least one third locking portion;
• the at least one third locking portion and the fourth locking portion align with the at least one first locking portion;
• the at least one third locking portion and the fourth locking portion are locked on the at least one first locking portion;
• the at least one first locking portion is initially introduced into the at least one third locking portion and then inserted into and locked in the fourth locking portion;
• the receiving space has another side provided with three second restriction portions for receiving and locking the first restriction portion;
• two of the three second restriction portions are locked on the first restriction portions of the two first locking units;
• the three second restriction portions and the three second locking units have the same number;
• the three second restriction portions are opposite to the three second locking units;
• the three second restriction portions are spaced from each other and are arranged linearly;
• the fourth locking unit is mounted on the first receiving portion or mounted in the first receiving recess;
• the fourth locking unit is locked on one of the three second locking units;
• when the fourth locking unit is driven or pressed, the fourth locking unit is controlled to be detached from the three second locking units;
• the first body and the second body are moved mutually or are not moved mutually by control of the fourth locking unit and the three second locking units, so that the two first locking units and the third locking unit are detached mutually or are not detached mutually;
• the fourth locking unit includes a first block, a second block, two third blocks, and an elastic member;
• the first block is provided with two slots spaced from each other;
• each of the two slots has a rectangular hollow shape;
• the second block is received in the first receiving recess;
• the second block is pressed and moved through the opening;
• the second block is spaced from the first block with an interval;
• the second block is provided with a channel transversely extending through the second block;
• the second block is provided with four second inclined faces arranged in the channel;
• the four second inclined faces form a trapezoid groove;
• the two third blocks are opposite to each other relative to the second block;
• the two third blocks are received in the channel;
• the two third blocks are transversely moved in the channel synchronously;
• each of the two third blocks has a first end provided with two third inclined faces slidably abutting two of the four second inclined faces;
• each of the two third blocks has a second end provided with a fifth locking portion protruding from one of the two slots;
• the fifth locking portion is locked on the second locking portion of one of the three second locking units;
• each of the two third blocks is provided with a receiving hole close to the two third inclined faces;
• the receiving holes of the two third blocks face each other;
• and
• the elastic member is elastically biased in the receiving hole of each of the two third blocks and is compressed by movement of the two third blocks to provide a restoring force to the two third blocks.