Abstract: An assembly change detection method based on attention mechanism, including: establishing a three-dimensional model of an assembly body, adding a tag to each part in the three-dimensional model, setting several assembly nodes, obtaining depth images of the three-dimensional model under each assembly node in different viewing angles, and obtaining a change tag image of a added part at each assembly node; selecting two depth images at front and back moments in different viewing angles as training samples; performing semantic fusion, feature extraction, attention mechanism processing and metric learning sequentially on the training samples, training a detection model, continuously selecting training samples to train the detection model, saving model parameters with optimal similarity during training, completing training; and obtaining depth images of successive assembly nodes during assembling the assembly body, inputting depth images into trained detection model, and outputting change image of added part of the

Abstract: An assembly change detection method based on attention mechanism, including: establishing a three-dimensional model of an assembly body, adding a tag to each part in the three-dimensional model, setting several assembly nodes, obtaining depth images of the three-dimensional model under each assembly node in different viewing angles, and obtaining a change tag image of a added part at each assembly node; selecting two depth images at front and back moments in different viewing angles as training samples; performing semantic fusion, feature extraction, attention mechanism processing and metric learning sequentially on the training samples, training a detection model, continuously selecting training samples to train the detection model, saving model parameters with optimal similarity during training, completing training; and obtaining depth images of successive assembly nodes during assembling the assembly body, inputting depth images into trained detection model, and outputting change image of added part of the

Abstract: Fullerene surfactant compounds useful as interfacial layer in polymer solar cells to enhance solar cell efficiency. Polymer solar cell including a fullerene surfactant-containing interfacial layer intermediate cathode and active layer.

Abstract: Fullerene surfactant compounds useful as interfacial layer in polymer solar cells to enhance solar cell efficiency. Polymer solar cell including a fullerene surfactant-containing interfacial layer intermediate cathode and active layer.

Abstract: An electronic device includes a main body and a cover. The main body includes an elastic latch. The latch has a latching opening. The cover is coupled to the main body and forms a receiving tab. The latch is at least partially deformable to allow the receiving tab to enter the latch opening and engage the latch.

Abstract: An accessory strap securing mechanism is positioned on a portable electronic device to assemble an accessory strap thereon. The portable electronic device defines an assembling slot. The accessory strap securing mechanism includes a securing member and a holder. The securing member is received in the assembling slot. The securing member defines a space and includes a stopper portion and a latching portion. The latching portion defines two pin holes. The holder rotatably engages in the pin holes and is received in the space, and the holder has a position abutting the stopper portion.

Abstract: A battery cover latching mechanism is provided. The battery cover latching mechanism includes a body member defining a battery receiving space, a battery cover attached to the body member to cover the battery receiving space, and a button assembly. The battery cover including a clamping portion. The button assembly includes a button. The button includes a latching portion. The latching portion releasbly locks the latching portion to the clamping portion.

Abstract: A battery cover assembly for a portable electronic device, the battery cover assembly includes a housing, a removeable battery cover, and a locking mechanism. The housing defines a receiving hole. The battery cover forms a latching portion. The locking mechanism latches the cover to the housing. The locking mechanism includes a disked-shape operating member and an elastic member. The operating member rotatably engages in the receiving hole of the housing, and the operating member disposes a locking block releasably and elastically engaging with the latching portion of the battery cover. The elastic member is arranged along one portion of an outer peripheral wall of the operating member. One end of the elastic member abuts the housing, and the other end thereof abuts the operating member.

Abstract: A cover assembly used in a portable electronic device is described. The cover assembly includes a body member defining an earphone hole and a cover member defining a through hole. The cover member is rotatably mounted to the body member to cover or expose the earphone hole.

Abstract: A stylus ejecting mechanism includes a housing, a control mechanism, a driving mechanism and a stylus. The housing defines a cavity and forming a latching portion. The control mechanism includes a button, the button forms a projection, the button engaging with the latching portion. The stylus is received in the cavity, the stylus defines a groove. The projection is engaged in the groove for releasably locking the stylus, and the driving mechanism is positioned at one end of the stylus for ejecting the stylus from the cavity of the housing.

Abstract: A stylus ejecting mechanism includes a housing, a control mechanism, a driving mechanism and a stylus. The housing defines a cavity and forming a latching portion. The control mechanism includes a button, the button forms a projection, the button engaging with the latching portion. The stylus is received in the cavity, the stylus defines a groove. The projection is engaged in the groove for releasably locking the stylus, and the driving mechanism is positioned at one end of the stylus for ejecting the stylus from the cavity of the housing.

Abstract: A holder for a surface contact card includes a main body, a cover and an impeller. The main body provides a receiving bay receiving the surface contact card therein. The cover is disposed on the main body. The cover defines an opening. The impeller is slidably received in the opening for pushing the surface contact card to remove it from the receiving bay. A portable electronic device with the holder mounted on it is also disclosed.

Abstract: An electronic device includes a main body and a cover. The main body includes an elastic latch. The latch has a latching opening. The cover is coupled to the main body and forms a receiving tab. The latch is at least partially deformable to allow the receiving tab to enter the latch opening and engage the latch.

Abstract: A battery cover assembly for a portable electronic device, the battery cover assembly includes a housing, a removeable battery cover, and a locking mechanism. The housing defines a receiving hole. The battery cover forms a latching portion. The locking mechanism latches the cover to the housing. The locking mechanism includes an operating member and an elastic member. The operating member rotatably engages in the receiving hole of the housing, and the operating member disposes a locking block releasably and elastically engaging with the latching portion of the battery cover. One end of the elastic member abuts the housing, and the other end thereof abuts the operating member.

Abstract: A cover assembly used in a portable electronic device is described. The cover assembly includes a body member defining an earphone hole and a cover member defining a through hole. The cover member is rotatably mounted to the body member to cover or expose the earphone hole.

Abstract: An accessory strap securing mechanism is positioned on a portable electronic device to assemble an accessory strap thereon. The portable electronic device defines an assembling slot. The accessory strap securing mechanism includes a securing member and a holder. The securing member is received in the assembling slot. The securing member defines a space and includes a stopper portion and a latching portion. The latching portion defines two pin holes. The holder rotatably engages in the pin holes and is received in the space, and the holder has a position abutting the stopper portion.

Abstract: A battery cover latching mechanism is provided. The battery cover latching mechanism includes a body member defining a battery receiving space, a battery cover placed above the body member to cover the battery receiving space, and a button assembly. The battery cover including a engaging portion. The button assembly includes a button. The button includes a latching portion. The button is pivotably mounted to the body member to lock the latching portion to the engaging portion or release the latching portion from the engaging portion.

Abstract: A holder for a surface contact card includes a main body, a cover and an impeller. The main body provides a receiving bay receiving the surface contact card therein. The cover is disposed on the main body. The cover defines an opening. The impeller is slidably received in the opening for pushing the surface contact card to remove it from the receiving bay. A portable electronic device with the holder mounted on it is also disclosed.

Abstract: A battery cover latching mechanism is provided. The battery cover latching mechanism includes a body member defining a battery receiving space, a battery cover attached to the body member to cover the battery receiving space, and a button assembly. The battery cover including a clamping portion. The button assembly includes a button. The button includes a latching portion. The latching portion releasbly locks the latching portion to the clamping portion.

Abstract: A hinge assembly for joining a cover to a main body of a folding phone, includes a housing (1), a cam (2), a cam follower (3), a spring (4), and an end cover (5). The cam and the cam follower are received in the housing with a connector (21) of the cam extending through a rear end (11) of the housing. The cam follower has a cylindrical main body (30) with a protrusion (31) extending from each opposite end thereof. The cylindrical main body can move along a cam surface (20) of the cam for being received in valleys (22) of the cam surface while the protrusions sliding in the housing. The end cover is inserted into the housing for locking the hinge components in the housing. The spring is compressively coupled between the cam follower and the end cover.