Composite panel assembly

1. A composite panel assembly comprising:

a first composite panel including upper and lower protective layers, each of which includes a core-abutment portion and an extending portion that extends from said core-abutment portion, and a first core sandwiched between said core-abutment portion of said upper protective layer and said core-abutment portion of said lower protective layer, said extending portion of said upper protective layer defining a first contact surface, said extending portion of said lower protective layer defining a second contact surface; and

a second composite panel including upper and lower protective layers, each of which includes a core-abutment portion and an extending portion extending from said core-abutment portion of a corresponding one of said upper and lower protective layers of said second composite panel, and a second core sandwiched between said core-abutment portions of said upper and lower protective layers of said second composite panel, said core-abutment portion of said upper protective layer of said second composite panel defining a third contact surface, said extending portion of said upper protective layer of said second composite panel defining a fourth contact surface,

wherein a space is defined between said first and second cores, said extending portion of said upper protective layer of said first composite panel extending beyond said space and overlapping said core-abutment portion of said upper protective layer of said second composite panel in such a manner that said first contact surface abuts against said third contact surface, said extending portion of said lower protective layer of said first composite panel and said extending portion of said upper protective layer of said second composite panel extending into said space in such a manner that said second contact surface abuts against said fourth contact surface; and

wherein said core-abutment portion of said lower protective layer of said first composite panel defines a fifth contact surface, said extending portion of said lower protective layer of said second composite panel extending beyond said space and overlapping said core-abutment portion of said lower protective layer of said first composite panel and defining a sixth contact surface which abuts against said fifth contact surface.

2. The composite panel assembly of claim 1 , wherein said third contact surface of said second composite panel is formed with a recess, said extending portion of said first composite panel that defines said first contact surface has a free end that is folded backward to form an insert, and said insert protrudes into said recess from said first contact surface.

3. A composite panel assembly comprising:

a first composite panel including upper and lower protective layers, each of which includes a core-abutment portion and an extending portion that extends from said core-abutment portion, and a first core sandwiched between said core-abutment portion of said upper protective layer and said core-abutment portion of said lower protective layer, said extending portion of said upper protective layer defining a first contact surface, said extending portion of said lower protective layer defining a second contact surface; and

a second composite panel including upper and lower protective layers, each of which includes a core-abutment portion and an extending portion extending from said core-abutment portion of a corresponding one of said upper and lower protective layers of said second composite panel, and a second core sandwiched between said core-abutment portions of said upper and lower protective layers of said second composite panel, said core-abutment portion of said upper protective layer of said second composite panel defining a third contact surface, said extending portion of said upper protective layer of said second composite panel defining a fourth contact surface,

wherein a space is defined between said first and second cores, said extending portion of said upper protective layer of said first composite panel extending beyond said space and overlapping said core-abutment portion of said upper protective layer of said second composite panel in such a manner that said first contact surface abuts against said third contact surface, said extending portion of said lower protective layer of said first composite panel and said extending portion of said upper protective layer of said second composite panel extending into said space in such a manner that said second contact surface abuts against said fourth contact surface; and

wherein each of said core-abutment portions of said lower protective layer of said first composite panel and said upper protective layer of said second composite panel is formed with a recess, and each of said extending portions of said upper protective layer of said first composite panel and said lower protective layer of said second composite panel includes an insert, said insert of said extending portion of said upper protective layer of said first composite panel being fitted into said recess in said core-abutment portion of said upper protective layer of said second composite panel, and said insert of said extending portion of said lower protective layer of said second composite panel being fitted into said recess in said core-abutment portion of said lower protective layer of said first composite panel.

4. The composite panel assembly of claim 3 , wherein said inserts are formed by folding respectively said extending portions of said upper protective layer of said first composite panel and said lower protective layer of said second composite panel.

5. A composite panel assembly comprising:

a first composite panel including upper and lower protective layers, each of which includes a core-abutment portion and an extending portion that extends from said core-abutment portion, and a first core sandwiched between said core-abutment portion of said upper protective layer and said core-abutment portion of said lower protective layer, said extending portion of said upper protective layer defining a first contact surface, said extending portion of said lower protective layer defining a second contact surface; and

a second composite panel including upper and lower protective layers, each of which includes a core-abutment portion and an extending portion extending from said core-abutment portion of a corresponding one of said upper and lower protective layers of said second composite panel, and a second core sandwiched between said core-abutment portions of said upper and lower protective layers of said second composite panel, said core-abutment portion of said upper protective layer of said second composite panel defining a third contact surface, said extending portion of said upper protective layer of said second composite panel defining a fourth contact surface,

wherein a space is defined between said first and second cores, said extending portion of said upper protective layer of said first composite panel extending beyond said space and overlapping said core-abutment portion of said upper protective layer of said second composite panel in such a manner that said first contact surface abuts against said third contact surface, said extending portion of said lower protective layer of said first composite panel and said extending portion of said upper protective layer of said second composite panel extending into said space in such a manner that said second contact surface abuts against said fourth contact surface;

wherein said extending portion of said lower protective layer of said first composite panel and said extending portion of said upper protective layer of said second composite panel respectively include bend segments that define respectively said second contact surface and said fourth contact surface, said bend segments of said first and second composite panels being releasably press-fitted against each other in the space; and

wherein said bend segments are substantially V-shaped, and each have a vertex and a free end, said bend segments bending toward each other near said vertex to make contact between said second and fourth contact surfaces and bending away from each other at said free ends.