Abstract: A hinge assembly (100) includes a shaft (10), a follower (12), a cam (20), a friction-reducing mechanism (30), and an urging means. The shaft includes a securing portion (11) formed thereon. The follower is connected with the shaft. The cam essentially is in the shape of a cylinder, and includes a cam surface (24) and defines a cam hole (22) extending therethrough. The cam hole receives the shaft therethrough. The friction-reducing mechanism is located around the shaft, and includes a rolling means. A first end of the urging means abuts against the shaft, and an opposite second end of the urging means biases the friction-reducing mechanism. The friction-reducing mechanism is disposed between the cam and the urging means. The cam surface of the cam is rotatably and movably engaged with the follower under force of the urging means.

Abstract: A battery cover latching mechanism (300) is used in a portable electronic device. The portable electronic device has a housing (10) and a battery cover (20). The battery cover latching mechanism comprises a fixing portion (206) formed on the battery cover, a locking member (30) and a switch (40). The locking member is mounted on the housing and slidable between a first position where the locking member engages with the housing and the battery cover and a second position where the locking member detaches with the housing and the battery cover relative to the housing. The switch is rotatably mounted on the housing. The switch engages with the locking member. The rotation of the switch urges the locking member to slide from the first position to a second position.

Abstract: A vacuum chamber inlet device includes a gas providing element (10), a plurality of flow control element (20), and a plurality of gas input elements (30). The gas providing element has an inlet (11) and a plurality of outlets (12). The flow control elements are connected to the outlets of the gas input element. Each of the gas input elements has a first end (31) and a second end (32). The first end is connected to the flow control elements, and the second end is disposed in the vacuum chamber. A gas vent (33) is formed on the second end.

Abstract: A surface contact card latching assembly (100) is located in a portable electronic device (200). The latching assembly includes a receiving portion (11) and a latch portion (12). The receiving portion is configured for receiving a surface contact card (20). The receiving portion includes an aperture (113) formed at a first end thereof via which the surface contact card enters or exits, and a latching containing portion (114) formed at an opposite second end thereof The latch portion is received in the latching containing portion. The latch portion is operable to move in the latching containing portion so as to drive the surface contact card to move out of the receiving portion through the aperture.

Abstract: A battery cover assembly (100) is for use in a portable electronic device. The battery cover includes a housing (10) and a battery cover (20). The housing has a first engaging portion (13) at one end thereof, and a holding portion (11) at an opposite end. The holding portion has an latch plate (1111). The battery cover has a second engaging portion (214) formed at one end thereof for engaging with the first engaging portion and defines a latch opening therein for engaging with the latch plate. The latch plate is integrated with the housing for being elastically deformed by an outside force so as to releasably lock with battery cover.

Abstract: A battery cover latching mechanism (300) for latching a battery cover (20) on a housing (10) of a portable electronic device. The battery cover has a fixing portion (204) defining a hollow (206) therein. The latching mechanism includes a button (30), a locking member (40) and an elastic member (60). The button (30) has an inclined surface (308). The locking member has a claw (408) engaged with the hollow and a slanted surface (414) that resists the inclined surface. The button is mounted in the housing and is movable along a first direction. When the button moves along the first direction, the locking member is driven to slide along a second direction perpendicular to the first direction, so as to move the claw from a first position where the claw engages in the hollow to a second position where the claw releases from the hollow.

Abstract: A SIM card holder includes a base (10) and a catching mechanism (20). The base defines a receiving groove (114) and a slot (110). The receiving groove is configured for receiving the SIM card therein. The base comprises a protrusion (108). The protrusion and the slot are arranged at two opposite sides of the receiving groove. The catching mechanism comprises a main board (201) having a bending piece (202) and a bending hem (204) at two opposite ends thereof. The bending hem is engaged in the slot. The bending piece is engagable with the base so as to lock the SIM card in the receiving groove. The main board comprises an elastic slice resisting the protrusion when the bending piece is engaged with the base.

Abstract: A surface contact card holder (200) for an electronic device includes a latching portion (30) and an elastic frame (40). The electronic device has a device body (10) with a receiving groove (20) defined therein for receiving a surface contact card (50) therein and the receiving groove has a card entrance (1002). The latching portion (30) is located adjacent to the card entrance of the receiving groove and the elastic frame is configured for attaching to the device body. The elastic frame has a first frame end (402) located adjacent to the card entrance, and an opposite second frame end (4013). The first frame end has a pressing portion configured for pressing the surface card against the body. The second frame end and the latching portion are configured for sandwiching the surface card therebetween.

Abstract: A battery cover latching assembly (50) is for a portable electronic device (100) including a housing (20), a first cover (10) configured for attaching to a first side of the housing, and a second cover (30) configured for attaching to a second side of the housing. The battery cover latching assembly includes a locking portion (131) and a latch (342). The locking portion is formed on the first cover. The latch is formed on the second cover. The latch includes a body (343) and a button portion (344) extending from the body. The body is engageable with the locking portion so as to lock the first cover and second cover with each other. The button portion is configured so as to be retained by the housing, and is operable to deform the body of the latch so as to unlock the first cover and the second cover.

Abstract: A keypad (20) includes a plurality of keytops (22) and an elastic base (24). The keytops are integrally formed at one side of the elastic base. A manufacturing method of the keypad (20) is provided. An electronic device (30) employing the keypad is also provided. The keypad has good adhesion between the keytops and the elastic base, which can prevent separation between the keytop and the elastic base.

Abstract: A slide mechanism (100) includes a main plate (20), a slide plate (10). The main plate has a post (24) protruding from one surface thereof The slide plate is slidably relative to the main plate, and has a guiding slot (162) defined therein. The post is slidably engaged with the guiding slot. The guiding slot is configured in a manner such that the post slides automatically to a desired position in the guiding slot when the post slides from one end of the guiding slot to the other and reaches a critical point.

Abstract: A battery cover latching assembly (50) is for a portable electronic device (100) including a housing (20), a first cover (10) configured for attaching to a first side of the housing, and a second cover (30) configured for attaching to a second side of the housing. The battery cover latching assembly includes a locking portion (114), a resisting portion (342), and a latch (40). The locking portion is formed on the first cover. The resisting portion is formed on the second cover. The latch is attached to the housing and abutting the resisting portion. The latch includes an engaging portion (44) and a button portion (42). The engaging portion is engageable with the locking portion so as to lock the first cover and the housing with each other. The button portion is movable so as to disengage the engaging portion from the locking portion, thereby unlocking the first cover from the housing.

Abstract: A housing (100) includes a housing base (10), a chromium film (12), and a chromium carbide film (14). The housing base is made of a material of metal or metal alloys. The chromium film is formed on a surface of the housing base, and the chromium carbide film is formed on a surface of the chromium film. The present invention also provides a method for making the housing.

Abstract: A surface contact card latching assembly (100) is formed in a portable electronic device. The latching assembly includes a receiving portion (11) and a latch module (12). The receiving portion is configured for receiving the surface contact card, and a first end of the receiving portion forms an entrance (112) via which the surface contact card can enter or exit. The latch module includes a blocking tab (120) and an elastic latch (122). The blocking tab extends from the receiving portion for partially covering the receiving portion. The elastic latch is disposed at the first end of the receiving portion.

Abstract: A SIM card holder includes a base (10) and a catching mechanism (20). The base defines a receiving groove (114) and a slot (110). The receiving groove is configured for receiving the SIM card therein. The base comprises a protrusion (108). The protrusion and the slot are arranged at two opposite sides of the receiving groove. The catching mechanism comprises a main board (201) having a bending piece (202) and a bending hem (204) at two opposite ends thereof. The bending hem is engaged in the slot. The bending piece is engagable with the base so as to lock the SIM card in the receiving groove. The main board comprises an elastic slice resisting the protrusion when the bending piece is engaged with the base.

Abstract: A chip card retaining mechanism for retaining a chip card (30) mounted in a electronic device (100) is provided. The electronic device includes a housing (10) having a battery compartment (12) defined therein. The chip card retaining mechanism includes a receiving portion (14) formed on the housing for fittingly receiving the chip card therein, and a locking assembly The receiving portion is opening in the battery compartment of the electronic device. The locking assembly includes a stop mechanism configured for preventing the chip card retreating from the receiving portion, and a latch plate (28). A first end portion of the latch plate is rotatably connected with the housing such that an opposite second end portion of the latch plate is capable of opening or closing the opening of the receiving portion.

Abstract: A SIM card holder includes a base (10) and a catching mechanism (20). The base defines a receiving groove (114) and a slot (110). The receiving groove is configured for receiving the SIM card therein. The base comprises a protrusion (108). The protrusion and the slot are arranged at two opposite sides of the receiving groove. The catching mechanism comprises a main board (201) having a bending piece (202) and a bending hem (204) at two opposite ends thereof The bending piece is detachably engaged with the base, and the bending hem is constantly retained in the slot of the base. The main board comprises an elastic slice resisting the protrusion of the base when the bending piece being engaged with the base. The catching mechanism is movable relative to the base and rotatable about the end of the bending hem when the slice disengages from the protrusion.

Abstract: A camera socket (100) includes a base (10) and a film (12). The base defines a receiving cavity (14) for receiving a camera module therein. The base has a transparent section (106) aligned with lenses of the camera module. The film is formed on a surface of the base. A portion (120) of the film formed on the transparent section of the base is transparent, the other portion of the film is coated with a metal coating (122). The metal coating is opaque, and the metal coating can be made of aluminum, copper, nickel, and stainless steel. The base is made of transparent plastic such as polycarbonate or polymethyl methacrylate. The present invention also provides a method for making the housing.

Abstract: A portable electronic device (101) includes a battery cover (200), a latch (200) and a housing (300). The battery cover has a resisting portion (114). One end of the latch has a limiting portion (207), another end of the latch having an engaging portion (208). The housing has a positioning portion. The latch moveably engages with the housing, and the resisting portion of the cover locks with the engaging portion for releasably locking the battery cover. The limiting portion engages with the positioning portion so as to limit the cover to open relative to the housing. This release provides a user with convenient and easy to use disassembly mechanism for the device.

Abstract: A battery cover latching assembly (50) for a portable electronic device (100) includes a housing (20), a first cover (10) configured for attaching to a first side of the housing, and a second cover (30) configured for attaching to a second side of the housing. The battery cover latching assembly includes a locking portion (131), a latch (342), and a button (40). The locking portion is formed on the first cover. The latch is formed on the second cover, the latch is engageable with the locking portion so as to lock the first cover and second cover with each other. The button is configured so as to be retained by the housing, the button is operable to deform the latch so as to unlock the first cover and the second cover.