Buckle assembly with locking arrangement

A buckle assembly, comprising:

• a first buckle member which comprises a first buckle body comprising an insertion member;
• a second buckle member which comprises a second buckle body having a receiving slot formed at a position corresponding to said insertion member of said first buckle body, said receiving slot being shaped and sized to receive at least said insertion member, said insertion member being detachably inserted in said receiving slot for detachably engaging said second buckle member with said first buckle member;
• and
• a locking arrangement, which comprises:
• a locking slot indently formed on said insertion member;
• a locking member movably mounted in said second buckle member at a position corresponding to said locking slot when said insertion member is fittedly inserted in said receiving slot;
• a releasing key detachably attached on said second buckle member to drive said locking member to move between a locked position and a releasing position, wherein in said locked position, said locking member is moved to engage with said locking slot to prevent said insertion member from detaching from said receiving slot, wherein in said releasing position, said locking member is driven by said releasing key to retract from said locking slot so as to allow said insertion member to be pulled out of said receiving slot for disengaging said first buckle member from said second buckle member;
• and
• a resilient element provided in said second buckle member to normally retain said locking member in said locked position.