Abstract: The present invention is to provide a quick release mount for holding handheld electronic device, comprises a mount base having an accommodating space inside, and a base hole on topside thereof; a constraint sliding plate movablely installed inside the accommodating space, having an upper side provided with a plate hole, a push button disposed on one end thereof, and having a free end exposed outside the mount base, when the push button is pushed, the stud element protruding on rear side of the handheld electronic device can pass through base and plate holes and freely access the accommodating space; and an resilient element abutted against the mount base and the constraint sliding plate, so that, when the push button is released, the resilient element can force the constraint sliding plate to move to a lock state not allowing the stud element to escape from the plate hole.

Abstract: The present invention is to provide a positioning structure for a handheld electronic device, which comprises a case being a rear case of the handheld electronic device or a protective case attached to the rear case, and two studs installed to the rear side of the case at positions adjacent to center and side edge of the case, respectively. The studs respectively include a stud pillar having one end fixed to the rear side of the case and a stud head having one end connected to the other end of the stud pillar, and maximum cross section of the stud head is larger than cross section of the stud pillar, so that the studs can be vertically standing on the rear side of the case, for enabling the case to be stably positioned on a wristband structure within a hand reachable and sight visible position through the studs.