Housing assembly for portable electronic device

A housing assembly for a portable electronic device, comprising:

• a first body having a first side, and a second side located corresponding to the first side, the first side having at least one first connection part, the second side having at least one second hole;
• a second body coupled to the first body and having a first side and a second side, the first and second sides of the second body located corresponding to the first and second sides of the first body respectively, the first side of the second body having a first release hole and at least one first hole, the second side of the second body having a second release hole and at least one second connection part;
• a first engaging member movably connected between the first and second bodies, the first engaging member being aligned with the first release hole of the second body, the first engaging member having at least one first engaging portion located corresponding to the at least one first hole of the second body;
• a first resilient member providing a force to the first engaging member to bias the first engaging member with respect to the first release hole of the second body;
• a second engaging member movably connected between the first and second bodies, the second engaging member being aligned with the second release hole of the second body, the second engaging member having at least one second engaging portion being aligned with the at least one second hole of the first body;
• a second resilient member providing a force to the second engaging member to bias the second engaging member to a pre-set position;
• a first housing connected to the second body and having a first side and a second side, the first side of the first housing having at least one first contact portion protruding therefrom toward the at least one first engaging portion of the first engaging member, the second side of the first housing having at least one first connection portion located corresponding to the at least one second connection part of the second body, the at least one first engaging portion of the first engaging member having a first contact face, the at least one first contact portion having a second contact face, a first protrusion extending from a portion of the first contact face of the at least one first engaging portion, the first protrusion contacting the second contact face of the at least one first contact portion, a second protrusion extending from a portion of the second contact face of the at least one first contact portion, the second protrusion contacting the first contact face of the at least one first engaging portion;
• and
• a second housing connected to the first body and having a first side and a second side, the first side of the second housing having at least one second connection portion located corresponding to the at least one first connection part of the first body, the second side of the second housing having at least one second contact portion protruding therefrom toward the at least one second engaging portion of the second engaging member;
• wherein when the first housing is connected to the second body, the at least one first connection portion of the first housing engages the at least one second connection part of the second body, the at least one first contact portion of the first housing passes through one first hole of the second body to engage and displace the at least one first engaging portion of the first engaging member, the first housing remaining retentively connected to the second body responsive to the bias force of the first resilient member applied to the first engaging member,
• wherein when the second housing is connected to the first body, the at least one second connection portion of the second housing engages the at least one first connection part of the first body, the at least one second contact portion of the second housing engages and displaces the at least one second engaging portion of the second engaging member, the second housing remaining retentively connected to the first body responsive to the bias force of the second resilient member applied to the second engaging member.