Abstract: A portable electronic device includes a main body, a battery module, at least a cover, a latch, a resilient member and a knob. The battery module is connected to the main body. At least a cover is connected to the main body. The latch is to lock or unlock the battery module and the at least a cover to the main body. The resilient member has an end connected with the latch for recovering the latch to an original position. The knob is connected to the latch and exposed by the main body for controlling the latch to lock or unlock the battery module and the at least a cover.

Abstract: A rotary lock mechanism disclosed includes a housing, a linear latch, and a rotary latch. The linear latch is disposed next to the housing and slides corresponding to the housing. The rotary latch is pivoted at a side of the housing, which faces the position structure. The rotary latch includes a dual-angle ramp disposed facing the linear latch. The linear latch may touch the dual-angle ramp to rotate the rotary latch when the linear latch slides corresponding to the housing.

Abstract: A touch pad module assembly structure includes a housing, a touch pad module and a metal bracket. The housing includes a generally rectangular opening. The touch pad module is assembled into the opening. The touch pad module includes a support member and a circuit board. An edge of the support member has a through hole and a pair of resilient members. An opposite edge of the support member has a connection member secured to a surrounding surface of the opening. The circuit board is disposed over the support member and includes a switch aligned with the through hole. The metal bracket is secured to a surrounding edge of the opening to be in to contact with the switch and expose the connection member.

Abstract: A touch pad module assembly structure includes a housing and a touch module. The housing includes a generally rectangular concave area, which includes a bottom surface, two housing edges, a step, a position pin and a convex member. The step is disposed closer to one of the two housing edges than the other thereof. The position pin is disposed on an inner surface of the one of the two housing edges. The convex member is disposed closer to the other of the two housing edges. The touch module includes a support member, which includes a position member and a hook member. The position member is disposed at an edge of the support member and includes a position hole to be engaged with the position pin. The hook member is disposed at an opposite edge of the support member and coupled with the other of the two housing edges.

Abstract: A rotary lock mechanism disclosed includes a housing, a linear latch, and a rotary latch. The linear latch is disposed next to the housing and slides corresponding to the housing. The rotary latch is pivoted at a side of the housing, which faces the position structure. The rotary latch includes a dual-angle ramp disposed facing the linear latch. The linear latch may touch the dual-angle ramp to rotate the rotary latch when the linear latch slides corresponding to the housing.

Abstract: An electronic device comprises a battery and a main body. The battery comprises an engaging element. The engaging element comprises a hook, a depressed surface and an inclined surface. The hook protrudes from the battery. The inclined surface and the depressed surface are connected to two sides of the hook. The main body comprises a linkage. The linkage is slidably disposed on the main body. The linkage comprises a hole with two side walls. The hook is engaged with the hole.