Auto-lock safety buckle

A female buckle member for operating with a corresponding male buckle member with a plurality of locking members between a locked position and a released position, comprising:

• a housing comprising an opening for receiving said locking members and a surface facing said opening, wherein said surface faces the male buckle member in the locked position, said housing having a first wall with a pit and a slot formed therein, a second wall opposite to said first wall, and two side walls,
• an opening formed on each said side wall for engaging with said corresponding locking member,
• a latch member slidably disposed in said housing for preventing said locking member from disengaging with said opening in the locked position, having a handle moveable along said pit and slot, and at least one guide rail groove formed on said latch member,
• at least one corresponding guide rail formed inside said housing on said second wall for said latch member to slide thereon, and
• a bias device disposed between said surface and the latch member, wherein the latch member is disposed between the bias device and said opening,
• wherein, the latch member is pushed by the locking members to press against the bias device into the locked position, the bias device is then released to engage the latch member with the locking members in the locked position,
• wherein said latch member is moved by the handle against said bias device for said locking members to disengage with said engaging portions from the locked position to the released position.

A buckle operating between a locked position and a released position, comprising:

• a male buckle member comprising a plurality of locking members;
• a female buckle member comprising
• a housing comprising an opening for receiving said locking members and a surface facing said opening, wherein said surface faces the male buckle member in the locked position,
• a plurality of engaging portions formed on said housing for engaging with said corresponding locking members,
• a latch member slidably disposed in said housing for preventing said locking members from disengaging with said engaging portions in the locked position comprising a handle, wherein said latch member is moved against said bias device by the handle for said locking members to disengage with said engaging portions from the locked position to the released position, and
• a bias device disposed between said surface and the latch member, wherein the latch member is disposed between the bias device and said opening,
• wherein, the latch member is pushed by the locking members to press against the bias device into the locked position, the bias device is then released to engage the latch member with the locking members in the locked position.