Pallet

A pallet, comprising a base board and first secondary boards movably coupled to two opposite sides of the base board, and first coupling axles connecting between the base board and the first secondary boards, the first coupling axles each comprising a first base and a first extension section extending from the first base, the first extension section forming a plurality of first flexible engagement keys at locations close to an end thereof that is adjacent to the first base, the base board forming first receiving sections respectively corresponding to the first bases and also forming first track channels respectively corresponding to the first extension sections, the first track channels each forming therein a plurality of groups of first retention slots corresponding to the first flexible engagement keys, the first bases being respectively received in the first receiving slots and movable in the first receiving slots, the first flexible engagement keys being receivable in and retained by the first retention slots to retain the first coupling axles in the base board, the first extension sections having free ends respectively fixed in the first secondary boards to movably couple the first secondary boards to the base board;

• wherein the first secondary boards each form a first mounting hole corresponding to the first extension section of each of the first coupling axles, the first extension sections of the first coupling axles being mounted in the first mounting holes so as to movably couple the first secondary boards to the base board;
• wherein the first extension section of each of the first coupling axles is cylindrical and the first flexible engagement keys are circumferentially formed on an outside surface of the first extension section at locations close to the first base;
• wherein the first flexible engagement keys are of a number of four and each of the groups of the first retention slots comprises four slots, the four slots respectively receiving four first flexible engagement keys;
• wherein the base board is rectangular and has another two sides to which second secondary boards are movably coupled, the second secondary boards being movably connected to the base board by second coupling axles;
• wherein the second coupling axles each comprise a second base and a second extension section extending from the second base, the second extension section forming a plurality of second flexible engagement keys at locations close to an end thereof that is adjacent to the second base, the base board forming second receiving sections corresponding to the second bases and also forming second track channels corresponding to the second extension sections, the second track channels each forming therein a plurality of groups of second retention slots corresponding to the second flexible engagement keys, the second bases being respectively received in the second receiving slots and being movable in the second receiving slots, the second resilient engagement keys being receivable in and retained by the respective second retention slots to thereby retain the second coupling axles in the base board, the second extension sections having free ends that are respectively fixed in the second secondary boards to thereby movably couple the second secondary boards to the base board;
• wherein the second secondary boards each form a second mounting hole corresponding to the second extension section of each of the second coupling axles, the second extension sections of the second coupling axles being respectively mounted in the second mounting holes so as to movably couple the second secondary boards to the base board;
• further comprising third secondary boards movably connected to opposite sides of each of the second secondary boards, the third secondary boards being movably connected to the second secondary boards by third coupling axles;
• wherein the third coupling axles each comprise a third base and a third extension section extending from the third base, the third extension section forming a plurality of third flexible engagement keys at locations close to an end thereof that is adjacent to the third base, the second secondary boards each forming third receiving sections corresponding to the third bases and also forming third track channels corresponding to the third extension sections, the third track channels each forming therein a plurality of groups of third retention slots corresponding to the third flexible engagement keys, the third bases being respectively received in the third receiving slots and being movable in the third receiving slots, the third resilient engagement keys being receivable in and retained by the respective third retention slots to thereby retain the third coupling axles in the second secondary boards, the third extension sections having free ends that are respectively fixed in the third secondary boards to thereby movably couple the third secondary boards to the second secondary boards;
• and
• wherein the third secondary boards each form a third mounting hole corresponding to the third extension section of each of the third coupling axles, the third extension sections of the third coupling axles being respectively mounted in the third mounting holes so as to movably couple the third secondary boards to the second secondary boards.