Abstract: A roller assembly includes a workbench, a roller module located above the workbench, and a locking assembly coupled to the roller module and configured to position the roller module above the workbench. The roller module includes a driving device and a pressure roller. The driving device is coupled to the pressure roller through a crank assembly. The crank assembly drives the pressure roller to move along a track to roll on a work-piece positioned on the workbench.

Abstract: A pivoting clamping assembly includes a carrier, clamping arm pivotably coupled to the carrier and configured to clamp or release a workpiece on the carrier, a lock arranged on the carrier and configured to lock the clamping arm when the clamping arm is rotated toward the workpiece, and at least one clamping block coupled to the clamping arm by a shaft and at least one resilient member. The shaft pivotably couples a pivoting joint of the at least one clamping block to the clamping arm. The at least one resilient member is coupled between the clamping block and the clamping arm.

Abstract: A pressing assembly includes a button, a first connection portion, a receiving portion, a first elastic element, a pressing rod, and a pressing portion. The first connection portion includes a first end movably connected to the button and a second end connected to the receiving portion. The receiving portion defines a receiving space. A part of the pressing rod is movably received in the receiving space. The first elastic element is received in the receiving space. One end of the first elastic element is fixed, another end of the first elastic element resists the pressing rod. The pressing portion is connected to the pressing rod.

Abstract: A support for video playback devices includes a headwear device, a support mechanism, and a holding mechanism. The support mechanism is connected to the headwear device. The holding mechanism is connected to the support mechanism, and is used to hold a video playback device. Viewing distance and angle of the video playback device is adjusted by varying relative positions of the headwear device and the support mechanism and by varying relative positions of the support mechanism and the holding mechanism. The structure of the support for video playback devices is simple. The support for video playback devices is useful when a user lies down, thus improving the user's sense of experience.

Abstract: A roller assembly includes a workbench, a roller module located above the workbench, and a locking assembly coupled to the roller module and configured to position the roller module above the workbench. The roller module includes a driving device and a pressure roller. The driving device is coupled to the pressure roller through a crank assembly. The crank assembly drives the pressure roller to move along a track to roll on a work-piece positioned on the workbench.

Abstract: A device with a processing unit and a storage device also has a base, a cover including a plurality of guiding holes, a plurality of receiving members, an installation member, a plurality of first sensing devices, and a plurality of second sensing devices. The processing unit determines by a specific one of the first sensing devices corresponding to a specific one of the receiving members that the installation member is to acquire a fastening element from the specific receiving member. Then, the processing unit determines by a specific one of the second sensing devices corresponding to a specific one of the guiding holes that the installation member is to move towards the specific guiding hole. The processing unit controls the installation member to fasten the fastening element to an electronic device through the specific guiding hole when the specific first sensing device corresponds to the specific second sensing device.

Abstract: A pivoting clamping assembly includes a carrier, clamping arm pivotably coupled to the carrier and configured to clamp or release a workpiece on the carrier, a lock arranged on the carrier and configured to lock the clamping arm when the clamping arm is rotated toward the workpiece, and at least one clamping block coupled to the clamping arm by a shaft and at least one resilient member. The shaft pivotably couples a pivoting joint of the at least one clamping block to the clamping arm. The at least one resilient member is coupled between the clamping block and the clamping arm.

Abstract: An electronic device includes a casing defining a receiving space in a back surface thereof. A receiving space is defined in an edge portion of the back surface. The receiving space is configured for receiving a battery therein. A cover is rotationally secured in the receiving space. The cover in a closed state is fully received in the receiving space. The cover in an open state is not fully received in the receiving space. The cover is rotatable between the closed state and the open state.

Abstract: A device for installing an elastic sealing ring on an electronic device includes a clamp module and a pressing module. The clamp module includes a sliding column defining two grooves, two linkage plates, and two pins secured on the bottom end of the linkage plates. The pressing module includes a bracket and a knockout plate. The linkage plates are rotatably installed on the bracket and the sliding column can slide relative to the bracket. The knockout plate can slide relative to the bracket, to install the sealing ring on an electronic device.

Abstract: An electronic device includes a casing defining a receiving space in a back surface thereof. A receiving space is defined in an edge portion of the back surface. The receiving space is configured for receiving a battery therein. A cover is rotationally secured in the receiving space. The cover in a closed state is fully received in the receiving space. The cover in an open state is not fully received in the receiving space. The cover is rotatable between the closed state and the open state.

Abstract: A device with a processing unit and a storage device also has a base, a cover including a plurality of guiding holes, a plurality of receiving members, an installation member, a plurality of first sensing devices, and a plurality of second sensing devices. The processing unit determines by a specific one of the first sensing devices corresponding to a specific one of the receiving members that the installation member is to acquire a fastening element from the specific receiving member. Then, the processing unit determines by a specific one of the second sensing devices corresponding to a specific one of the guiding holes that the installation member is to move towards the specific guiding hole. The processing unit controls the installation member to fasten the fastening element to an electronic device through the specific guiding hole when the specific first sensing device corresponds to the specific second sensing device.

Abstract: A support for video playback devices includes a headwear device, a support mechanism, and a holding mechanism. The support mechanism is connected to the headwear device. The holding mechanism is connected to the support mechanism, and is used to hold a video playback device. Viewing distance and angle of the video playback device is adjusted by varying relative positions of the headwear device and the support mechanism and by varying relative positions of the support mechanism and the holding mechanism. The structure of the support for video playback devices is simple. The support for video playback devices is useful when a user lies down, thus improving the user's sense of experience.

Abstract: A pressing assembly includes a button, a first connection portion, a receiving portion, a first elastic element, a pressing rod, and a pressing portion. The first connection portion includes a first end movably connected to the button and a second end connected to the receiving portion. The receiving portion defines a receiving space. A part of the pressing rod is movably received in the receiving space. The first elastic element is received in the receiving space. One end of the first elastic element is fixed, another end of the first elastic element resists the pressing rod. The pressing portion is connected to the pressing rod.

Abstract: A device for installing an elastic sealing ring on an electronic device includes a clamp module and a pressing module. The clamp module includes a sliding column defining two grooves, two linkage plates, and two pins secured on the bottom end of the linkage plates. The pressing module includes a bracket and a knockout plate. The linkage plates are rotatably installed on the bracket and the sliding column can slide relative to the bracket. The knockout plate can slide relative to the bracket, to install the sealing ring on an electronic device.

Abstract: An adjusting device for adjusting orientation of an energy conversion board comprises a first frame member, a second frame member, a third frame member and a base. The first frame member contains the energy conversion board. The second frame member holds the first frame member. The third frame member holds the second frame member. The base supports the third frame including the other frames and the energy conversion board. The first frame member is rotatable relative to the second frame member, the second frame member is rotatable relative to the third frame, and the third frame member is rotatable relative to the base. The first rotating axis is perpendicular to the second rotating axis, and the third rotating axis is coaxial with the first rotating axis.

Abstract: A screw releasing device with a guiding function includes a first housing, a control mechanism, and a guiding hole, the first housing defines a first receiving groove, the control mechanism is received in the first receiving groove, and includes a first cam, a second cam, and a third cam, the third cam includes a serrated member, the guiding hole receives a number of screws, and defines a first opening, when the first cam is not driven, the serrated member extends to the guiding hole via the first opening, so that the serrated member is at a supporting location and supports a bottommost screw, when the first cam is driven, the first cam drives the third cam to be not limited by the second cam and rotate, thus the serrated member is rotated to release the bottommost screw.

Abstract: A screw releasing device with a guiding function includes a first housing, a control mechanism, and a guiding hole, the first housing defines a first receiving groove, the control mechanism is received in the first receiving groove, and includes a first cam, a second cam, and a third cam, the third cam includes a serrated member, the guiding hole receives a number of screws, and defines a first opening, when the first cam is not driven, the serrated member extends to the guiding hole via the first opening, so that the serrated member is at a supporting location and supports a bottommost screw, when the first cam is driven, the first cam drives the third cam to be not limited by the second cam and rotate, thus the serrated member is rotated to release the bottommost screw.

Abstract: An automatic installation device for automatic procuring and fixing an object to a product is mounted on a base. The automatic installation device comprises an elevating mechanism, a loading mechanism for procuring the object, and a flexing mechanism connected between the elevating mechanism and the loading mechanism. The flexing mechanism is capable of driving the loading mechanism moving between the object and the product for aligning the object with the product in a first orientation. The elevating mechanism is capable of driving the loading mechanism to move in a second orientation perpendicular to the first orientation to drive the loading mechanism moving adjacent to the product and fixing the object to the product.

Abstract: An exemplary embodiment of a testing device for testing a pulling force includes a shell having a test platform, a load sensor mechanism, a control system, a drive and transmission mechanism and a material clamping mechanism. Two portions of a test object are clasped by the load sensor mechanism and the clamp. When the load sensor mechanism is driven to move further away from the clamp via the drive and transmission mechanism, a pulling force perpendicular to the test platform is generated between the two portions of the test object. The load sensor mechanism detects the pulling force and feeds back the detection to the control system.

Abstract: An exemplary embodiment of a testing device for testing a pulling force includes a shell having a test platform, a load sensor mechanism, a control system, a drive and transmission mechanism and a material clamping mechanism. Two portions of a test object are clasped by the load sensor mechanism and the clamp. When the load sensor mechanism is driven to move further away from the clamp via the drive and transmission mechanism, a pulling force perpendicular to the test platform is generated between the two portions of the test object. The load sensor mechanism detects the pulling force and feeds back the detection to the control system.