Abstract: A waterproofing method and structure are applicable to an electronic device having a first casing and a second casing, the first casing having a first adjoining-brim peripherally disposed thereon, and the second casing having a peripheral second adjoining-brim for adjoining the first adjoining-brim. The method includes forming a convex portion circumferentially along the first adjoining-brim; forming a concave portion circumferentially along the second adjoining-brim, the concave portion corresponding in position to the convex portion; disposing a resilient unit in the concave portion, the resilient unit including a body and a soft interfering element protruding therefrom; coupling the first and second adjoining-brims together such that the convex portion presses against the soft interfering element to enable deformation thereof, thereby forming a first interfering structure.

Abstract: A curvature examining jig for examining the curvature of a circuit board quickly and accurately includes a platform and a carrier. An examining region is defined on the platform so as for the circuit board to be disposed flatly within the examining region. A recess is disposed in the examining region and configured to receive a protrusion of the circuit board. The carrier is slidably coupled to the platform, configured to move along the margin of the circuit board, and provided with a plurality of plug gauges facing the platform closely and configured to move to the examining region along with the carrier. Accordingly, the curvature examining jig is convenient in holding a circuit board having a protrusion, quick and accurate in examining the curvature of the circuit board, and effective in enhancing the efficiency of production lines.

Abstract: An attachment-enabling jig for attaching a soft strip to an attachment surface of an object quickly, precisely, and flatly includes a base; a first carrying unit disposed on the base and provided with a first roller oriented perpendicular to a first direction; a second carrying unit disposed on the base and provided with a second roller corresponding in position to the first roller, wherein the first and second carrying units carry the soft strip; a resilient unit connected to the first and second carrying units; and an actuating unit disposed on the base and configured to hold the object and controllably drive the attachment surface of the object to move to between the first roller and the second roller such that the first and second rollers attach the soft strip to the attachment surface. Accordingly, the attachment-enabling jig is effective in enhancing the efficiency of production lines.

Abstract: A hinge, configured to be stably positioned by a simple mechanism and advantageously characterized by ease of installation and uninstallation, includes a first connection member and a second connection member. The first connection member includes a first fixing unit and a support unit. The first fixing unit has a first fixing side and a connecting side. The support unit is connected to the connecting side, and has a cylindrical receiving chamber and a via in communication with the cylindrical receiving chamber. The via is penetrable by a rod-shaped tool. The second connection member includes a second fixing unit and a post connected to the second fixing unit. The second fixing unit has a second fixing side. The post is removably disposed in the cylindrical receiving chamber and has a positioning hole for receiving an end portion of the rod-shaped tool when aligned with the via.

Abstract: A latch structure prevents separation of first and second bodies of an electronic device which might otherwise occur as a result of a fall, requires little force to operate, and serves to switch a coupling status of the first and second bodies of the electronic device. The first body has a receiving unit and a coupling unit. The second body has an L-shaped groove. A base of the latch structure has a casing slidable in the receiving unit and a resilient element for providing a resilient restoring force. The casing has a protruding member for coupling with the L-shaped groove. A resilient coupling unit of the latch structure is disposed on the base and configured to engage the coupling unit.

Abstract: A portable electronic device includes a body, a casing, and a resilient element. The casing accommodates the body such that the body can slide within the casing. The casing has an opening through which an electrical connection unit connected to the body protracts out of, or retracts into, the casing. The resilient element has an end connected to the casing and another end abutting against the body. The resilient element exerts a resilient restoring force upon the body in response to the sliding of the body. The casing has a stop structure configured to operate in conjunction with an engagement structure of the body and thereby limit the range of the sliding of the body. The engagement structure can be disengaged from the stop structure to separate the body from the casing. Accordingly, the portable electronic device has multiple uses, namely quick maintenance, easy assembly, body protection, and automatic accommodation.

Abstract: A circuit system layout method for laying out a circuit system has a standby power supply unit. The circuit system includes a core circuit set and a non-core circuit set and operates on power supplied by a power source. The core circuit set is still enabled to finalize a temporary process with the power supplied by the standby power supply unit upon an unexpected interruption of the power supplied by the power source. The core circuit set is connected to an energy storing element for storing and discharging the power, and connected to a one-way element for ensuring that the power stored in the energy storing element is supplied to the core circuit set only. The core circuit set performs the temporary process even when the power source does not enable the circuit system to operate. The circuit system is further provided.

Abstract: A coupling mechanism for coupling together a first body and a second body of an electronic device includes a first engagement module and a second engagement module. The first engagement module is disposed at the first body and has an engagement groove and a first guiding slope connected thereto. The second engagement module is disposed in a receiving space of the second body and includes an engaging member and a resilient element. The engaging member has a pressing portion and an engaging portion. The pressing portion protrudes from the second body so as to be pressed. The engaging portion is slidable relative to the first guiding slope to thereby lift/lower the engaging member, and is engageable with the engagement groove to couple the first and second bodies together. The resilient element exerts a resilient force upon the engaging member according to the lifted/lowered state of the engaging member.

Abstract: A soft ring addresses issues, such as casing deformation, waterproof capacity, and dust control. The soft ring is configured for use with a casing of an electronic device, and the casing has a first housing and a second housing coupled together. A ring-shaped receiving groove is disposed on the first housing for receiving the soft ring and a ring-shaped flange is disposed on the second housing for pressing the soft ring along the coupling portion of the first housing and the second housing. The soft ring is characterized in that a channel is disposed along the soft ring. The soft ring advantageously features a high compressed capacity and a low reaction force to thereby prevent the casing from deformation and improve the waterproof capacity and dust control of the casing.

Abstract: An assembly fixture for fixing a part/component to a printed circuit board includes a platform, an elevating unit, and a carrying body. The platform has a receiving area and a plurality of positioning pillars. The elevating unit is disposed on the platform. The carrying body is coupled with the elevating unit, configured to correspond in position to the receiving area, configured to carry the printed circuit board, and provided therein with a plurality of through holes corresponding in position to the positioning pillars, respectively. The elevating unit is capable of descending to enable the positioning pillars to protrude from the printed circuit board and the through holes, respectively, for positioning the part/component on the printed circuit board. The assembly fixture is effective in positioning the part/component on the printed circuit board to render an assembly process of the printed circuit board easy, quick, safe, and precise.

Abstract: A calibration method for oscillation frequency and a calibration device embodying the calibration method are used to calibrate oscillation frequency of an electronic product, including steps of receiving radio time signals transmitted from a radio broadcast station and transforming the radio time signals into multiple pulse signals; calculating the pulse signals and clock signals corresponding to the oscillation frequency to generate a corresponding control signal; and using the control signal to adjust the clock signals generated by an adjustable frequency generating unit in the electronic product so as to calibrate the oscillation frequency corresponding to the clock signals.

Abstract: An assembly auxiliary jig facilitates assembly of an electronic device having a casing, a first fitting, a second fitting, and a wire. The assembly auxiliary jig includes: a base having therein a receiving space for positioning and receiving the casing and an accessing recess configured to communicate with the receiving space and facilitate access to the casing; a first platform disposed at the base and having a positioning groove in communication with the receiving space to thereby receive the first fitting; a first lid hinged to the first platform and configured to close the positioning groove; a second platform disposed at the base and defined with a positioning recess in communication with the receiving space to receive the second fitting; and a second lid hinged to the second platform and configured to close the positioning recess.

Abstract: The present invention provides a circuit board of a communication product and a manufacturing method thereof. The circuit board comprises a main body of a circuit board and an isolation cover. A surface of the main body of the circuit board has a power transistor, an insulating layer, a plurality of first openings disposed at intervals on the insulating layer and around the power transistor, and a plurality of soldering portions exposed from the first openings respectively. The isolation cover comprises a cover body and a plurality of second openings equidistantly opened on a lateral side of the cover body. The isolation cover is disposed on the surface of the main body of the circuit board, and is soldered to the soldering portions through a local spot soldering process.

Abstract: A notch positioning type soldering structure and a method for preventing a pin deviation can prevent a plurality of pins of an electronic component from being deviated when the pins are soldered onto a printed circuit board by a solder, and each of at least two solder pads includes at least one notch, and the solder pads are installed in an alignment direction on the printed circuit board, such that the notch positioning type soldering structure and the method for preventing a pin deviation can improve the efficiency of manufacturing processes and reduce the manufacturing cost.

Abstract: A cut-edge positioning type soldering structure and a method for preventing a pin deviation can prevent a plurality of pins of an electronic component from being deviated when the pins are soldered onto a printed circuit board by a solder, and each of at least two solder pads includes at least two cut edges, and the solder pads are installed in an alignment direction on the printed circuit board, such that the cut-edge positioning type soldering structure and the method for preventing a pin deviation can improve the efficiency of manufacturing processes and reduce the manufacturing cost.

Abstract: A device and a method for locking and calibrating a frequency is provided for receiving a precise external clock frequency to lock an adjustable oscillator that controls an oscillation frequency to a predetermined frequency. The device comprises a process unit and a frequency adjusting unit. The process unit is provided for comparing the oscillation frequency with a precise frequency to generate a frequency difference and a calibration signal according to the frequency difference. The frequency adjusting unit generates a locking voltage according to the comparison result of the calibration signal and the internal oscillation frequency for locking the oscillation frequency of the external adjustable oscillator to the predetermined frequency, so that the adjustable oscillator still can output a precise oscillation frequency without requiring a precise oscillator.