Abstract: A hand-driven mechanical screwdriver includes a holding assembly, a drive mechanism supported by the holding assembly, and a working element. The holding assembly includes a bracket and a sliding channel defined in the bracket. The drive mechanism includes a connecting element and a screw rod threadably engaged within the connecting element. An activator is rotatably connected to the connecting element and slidably positioned within the holding assembly bracket sliding channel. The working element is attached to the second end of the screw rod. When the activator is slid along the sliding channel, the connecting element moves from near the second end of the bracket towards the first end of the bracket rotating the threadably engaged screw rod and the working element attached to the screw rod.

Abstract: A testing tray includes a receiving member and a connector. The receiving includes a tray and a latching member. The tray includes a bottom wall, a peripheral sidewall protruded from the bottom wall, a resisting member and a guide groove. The resisting member includes a resisting portion and two elastic portions coupling the resisting portion with the peripheral sidewall. The tray includes at least one latching portion protruded from the peripheral sidewall. The latching member includes a sliding portion slidably mounted on the bottom wall to cover the guide groove and an elastic member located between the sliding portion and the bottom wall. The connector includes a fixed member detachably mounted on the at least one latching portion and a conducting member detachably mounted on the fixed member. The conducting member is capable of coupling the electronic device with a testing device.

Abstract: A housing structure includes a shell integrally formed in aluminum and at least one mounting member. The shell includes a bottom wall, a first end wall, a second end wall and a top wall connected to the first end wall and the second end wall. The first end wall and the second end wall extend from opposite ends of the bottom wall. The bottom wall, the first end wall, the second end wall, and the top wall cooperatively form a receiving space with at least one opening. A first installation rail and a second installation rail protrude respectively from inners wall of the first end wall and the second end wall. The at least one mounting member is connected with the first installation rail and the second installation rail to enclose the at least one opening. The disclosure also supplies an electronic device using the same.

Abstract: A testing tray includes a receiving member and a connector. The receiving includes a tray and a latching member. The tray includes a bottom wall, a peripheral sidewall protruded from the bottom wall, a resisting member and a guide groove. The resisting member includes a resisting portion and two elastic portions coupling the resisting portion with the peripheral sidewall. The tray includes at least one latching portion protruded from the peripheral sidewall. The latching member includes a sliding portion slidably mounted on the bottom wall to cover the guide groove and an elastic member located between the sliding portion and the bottom wall. The connector includes a fixed member detachably mounted on the at least one latching portion and a conducting member detachably mounted on the fixed member. The conducting member is capable of coupling the electronic device with a testing device.

Abstract: A hand-driven mechanical screwdriver includes a holding assembly, a drive mechanism supported by the holding assembly, and a working element. The holding assembly includes a bracket and a sliding channel defined in the bracket. The drive mechanism includes a connecting element and a screw rod threadably engaged within the connecting element. An activator is rotatably connected to the connecting element and slidably positioned within the holding assembly bracket sliding channel. The working element is attached to the second end of the screw rod. When the activator is slid along the sliding channel, the connecting element moves from near the second end of the bracket towards the first end of the bracket rotating the threadably engaged screw rod and the working element attached to the screw rod.