Abstract: A laser marking machine includes a support portion, a laser marking device fixed on the support portion, a control chip and a fixing mechanism fixed on the support portion. The fixing mechanism includes a support board configured for supporting a workpiece, and four positioning blocks moved, and four motors being able to control the four positioning blocks to slide in the support board. The fixing mechanism further includes at least two position detectors. The two position detectors are able to position detector a distance data of the workpiece deviating from a center of the support board along X and Y axes, and transmit the distance data to the control chip. The control chip analyzes the distance data to control the four motors to respectively drive the four positioning blocks to slide in the support board until the workpiece is centered on the support board.

Abstract: A laser marking machine includes a support portion, a laser marking device fixed on the support portion, a control chip and a fixing mechanism fixed on the support portion. The fixing mechanism includes a support board configured for supporting a workpiece, and four positioning blocks moved, and four motors being able to control the four positioning blocks to slide in the support board. The fixing mechanism further includes at least two position detectors. The two position detectors are able to position detector a distance data of the workpiece deviating from a center of the support board along X and Y axes, and transmit the distance data to the control chip. The control chip analyzes the distance data to control the four motors to respectively drive the four positioning blocks to slide in the support board until the workpiece is centered on the support board.

Abstract: A shock absorber includes a cylinder defining a sliding hole, at least two sliders, absorbing particles filled in to the sliding hole, and a cap. The at least two sliders are slidably fitted in the sliding hole. The cap is connected to the sliding hole of the cylinder to prevent the sliders from sliding out of the sliding hole.

Abstract: An electrical connector includes a socket and a plug. The socket includes a sidewall and defines at least one latching hole. One end of each of the at least one latching hole is defined in the sidewall. The plug includes a main body, at least one latching mechanism, and a switch. The main body includes a first surface and a second surface. The main body defines at least one receiving space, a first groove, and a second groove. The at least one latching mechanism is partially received in the receiving space. The switch is positioned in the second groove and partially external to the first groove. The at least one latching mechanism can slide to engage the switch by an external force, and the switch can cause the at least one latching mechanism to disengage from the switch by an external force.

Abstract: An electrical connector includes a socket and a plug. The socket includes a sidewall and defines at least one latching hole. One end of each of the at least one latching hole is defined in the sidewall. The plug includes a main body, at least one latching mechanism, and a switch. The main body includes a first surface and a second surface. The main body defines at least one receiving space, a first groove, and a second groove. The at least one latching mechanism is partially received in the receiving space. The switch is positioned in the second groove and partially external to the first groove. The at least one latching mechanism can slide to engage the switch by an external force, and the switch can cause the at least one latching mechanism to disengage from the switch by an external force.

Abstract: A display device includes a glass sheet, a front frame, and a fastening device. The glass sheet is used for protecting a display module disposed in an enclosure of the display device. The front frame is a part of the enclosure of the display device. The fastening device has a first surface and a second surface opposite to the first surface. The first surface is glued to the glass sheet with adhesive. The second surface is detachedly attached to the front frame.