Abstract: A hinge mechanism includes a fixed member (20), two rolling elements (40), an elastic member (60), a rotational member (50) and a shaft (30). The fixed member has a flange (201) and a stop portion (202) thereof. Two first hollows (2022) are defined in the end part of the flange. Each rolling element has two rolling portions (402, 403). The rotational member includes a main portion (51) defined two hemisphere second hollows (511), and a middle portion (53) defining two receiving chambers (531) therein for receiving the rolling bodies. The first and second rolling portions of each rolling element are respectively received in the first hollow and the second hollow. The shaft extends through the fixed member, the elastic member and the rotational member. One end of the elastic member resists the rotational member and the other end of the elastic member is fixed in the longitudinal direction of the shaft.

Abstract: A surface contact card holder (100) includes a body (10), a frame (30) and a sliding groove (14). The frame is configured for carrying a surface contact card therein. The sliding groove is provided on the body for receiving the frame. The frame is slidably received in the sliding groove to allow insertion and removal of the surface contact card.

Abstract: A cover (200) for portable electronic device includes a foil film (30) and a housing (40). The foil film includes a transparent view panel (31) and a keypad (33) integrally formed thereon. The housing is integrally formed with the foil film. The housing has a view panel opening (41) and a keypad opening (43) defined therein. The view panel opening and the keypad opening respectively correspond to the view panel and the keypad of the foil film. A method for making the cover includes the following steps: forming a foil film by injection molding, the foil film having a transparent view panel and a keypad; and integrally forming a housing on an inner surface of the foil film by injection molding, the housing having a view panel opening and a keypad opening respectively corresponding to the view panel and the keypad of the foil film.

Abstract: A side key assembly is mounted on a housing (60) which comprises a sidewall (610). A socket (62) is formed in the sidewall (610) of the housing. The side key assembly includes a button (70), two switches (80) and the socket. The button includes an operating portion (710), two touching blocks (740) and at least one elastic arm (750). The operating portion is slidingly received in the socket. One end of the at least one elastic arm connects with the operating portion while the other end is firmly fixed on the housing. Each switch includes a contact portion. Each contact portion is positioned adjacent to a corresponding touching block. Each switch is turned on when the corresponding touching block is moved to touch the contact portion thereof.

Abstract: A chip card retaining mechanism for detachably retaining a chip card (50) and allowing the chip card to be connected to terminals (20) formed on a printed circuit board (60). The chip card retaining mechanism includes a base (10), two locking members (30). The base has a first surface (11) for exposing the terminals. The locking members are arranged at lateral sides of the base. Each locking member has a top plate (32) configured for limiting movement of the chip card along a horizontal direction. Each locking member further includes a stopper (324) formed at one end thereof and disposed at a movement path of the chip card in a horizontal direction. The base, and the locking members cooperatively define a receiving space for receiving the chip card therein.

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 battery cover assembly mechanism (200) of a portable electronic device (100) includes a housing (10), a battery cover (20), and an elastic member (30) mounted on the housing. The housing has at least one latching portion (126). The battery cover includes at least one latching block (28), a first stopper (24), and a second stopper (26). The elastic member includes a first elastic portion (34) and a second elastic portion (36). In assembly, the latching block of the battery cover is engaged with the latching portion of the housing, and the first stopper and the second stopper respectively engage with the first elastic portion and the second elastic portion. Therefore, the battery cover is stably attached to the housing.

Abstract: A keypad assembly used in a portable electronic device (100) includes at least one key button (40) and at least one fixing member (30). Each key button is slidingly received in a receiving hole (26) defined in a cover (20) of the portable electronic device. The at least one fixing member is fixed on the cover. Each fixing member includes at least one latching portion (31) and a plurality of curved portions (32). Each latching portion connects with the curved/bias portions. Each latching portion firmly connects with at least one key button. The corresponding latching portion of the fixing member is configured for selectably pressing into a chosen switch (12) in the portable electronic device, so as to form/prompt an electronic signal when the key button is given an appropriate horizontal force to initiate such contact with a given switch.

Abstract: An exemplary housing mechanism (100) for an electronic device includes a front cover (10), a back cover (20), and an elastic sealing element (12). The front cover has a projecting edge (18) defined thereon. The back cover has a recessed edge (26) defined therein. The elastic sealing element has a tip portion (122) and is formed or sealed together with the front cover. The projecting edge of the front cover and the tip portion of the elastic sealing element are configured to be press fit into the recessed edge of the back cover.

Abstract: A portable electronic device (40) includes a housing (41), a display section (42) formed on the housing, and a stylus (20) connected to the housing. The display section has a screen. The stylus includes a writing portion (21), a sleeve (23), and a holder (25) formed on the sleeve. The writing portion is for moving on the screen of the display section. The sleeve has a first end (231) connecting with the writing portion, and an opposite second end being open.

Abstract: A method for producing a shell (100) with three-dimensional decoration, via a surface treatment process, is provided. The method includes four steps as follows. A base body (10) of the shell is firstly formed or otherwise provided. A base-coat layer (20) is then sprayed and formed on an exterior surface (12) of the base body. After that, an ink layer (30) is printed onto the base-coat layer. Finally, a protecting top-coat layer (40) is sprayed and formed upon the ink layer and the base-coat layer in such a manner that the ink layer is thereby enclosed within a combination of the base-coat layer and the top-coat layer.

Abstract: A housing assembly (100), used, e.g., in a mobile device (300), includes a housing body (10) and an attached unit (20). The housing body defines a display opening (110). The attached unit includes a base layer (21) and an electronic ink layer (22). The attached unit is received in the display opening and is configured for providing/displaying information and/or graphics thereon. The housing body moldingly receives the display lens therein, via an injection molding process.

Abstract: A housing mechanism (100) includes a body (10). A hook (14) is formed on the body. The body has a receiving portion (12) defined therein and correspondingly has a first wall (1222) and a second wall (1224, 1242, 1244). The hook has a hook body (142) and at least one arm (144). The hook body extends from the first wall, towards the second wall, and above the receiving portion. The at least one arm extends from the hook body and above the receiving portion. There is a first space between the hook body and the second wall. There is a second space between the at least one arm and the second wall. The receiving portion and the hook together are able to receive a line to allow, e.g., decorative items to be hung upon the body.

Abstract: A housing assembly (100), used, e.g., in a mobile electronic device (300), includes a housing body (10) and a display unit (20). The housing body defines a display opening (110). The display unit contains electronic ink. The display unit is received in the display opening and is configured for providing information and/or graphics. The housing body moldingly receives the display lens therein, via an injection molding process.

Abstract: A testing system for testing flatness of a surface of a workpiece includes a testing apparatus (10) and a processor (20). The testing apparatus includes a testing box (12) and a measuring apparatus (14). The testing box includes a plurality of holders (122); the holders define a datum plane. The measuring apparatus comprises a plurality of movable testing poles (142) extending out of the testing box and a plurality of gauges (141) configured for measuring distance of the testing poles retracting into the testing box. Ends (1421) of the testing poles away from the testing box are located at the datum plane and configured for supporting the surface of the workpiece thereon to allow the gauges measuring retracting distance of the testing poles under the pressure of the workpiece. The retracting distance of the testing poles is equal to distances between testing points on the surface of the workpieces and the datum plane.

Abstract: A housing mechanism (100) includes a main body (10) and a shield (20). The main body includes a pair of guiding portions (142) and at least one port (146) defined through the sidewall (14) thereof. The shield includes a pair of guiding poles (242) provided on an inner surface (24) thereof. The shield cooperates with the main body. The guiding poles slide in the corresponding guiding portions and are selectively positionable/slidable between one of two ends of the respective guiding portions to allow the shield to cover/uncover the at least one port.