Abstract: An electronic device casing can be used in a projector and includes a first casing member and a second casing member. The first casing member includes a first side wall. The first casing member and the second casing member are engaged with each other to form an internal accommodating space. The second casing member includes a second side wall. The first side wall and the second side wall are oppositely disposed to form a narrow passage therebetween. The internal accommodating space is connected to an external space of the electronic device casing through the narrow passage. The narrow passage has a non-straight traveling path. Furthermore, the electronic device can includes an air flow bypass passage near the narrow passage.

Abstract: An electronic device casing can be used in a projector and includes a first casing member and a second casing member. The first casing member includes a first side wall. The first casing member and the second casing member are engaged with each other to form an internal accommodating space. The second casing member includes a second side wall. The first side wall and the second side wall are oppositely disposed to form a narrow passage therebetween. The internal accommodating space is connected to an external space of the electronic device casing through the narrow passage. The narrow passage has a non-straight traveling path. Furthermore, the electronic device can includes an air flow bypass passage near the narrow passage.

Abstract: A power board and ballast module includes a housing, a power board, a ballast and an electrical connector. The power board is disposed in the housing. The ballast is disposed in the housing and electrically connected to the power board. The electrical connector is disposed in the housing and exposed out of the housing, wherein the power board and the ballast are electrically connected to the electrical connector respectively. Projectors using the power board and ballast module are also provided.

Abstract: A power board and ballast module includes a housing, a power board, a ballast and an electrical connector. The power board is disposed in the housing. The ballast is disposed in the housing and electrically connected to the power board. The electrical connector is disposed in the housing and exposed out of the housing, wherein the power board and the ballast are electrically connected to the electrical connector respectively. Projectors using the power board and ballast module are also provided.

Abstract: An optical disc drive includes an optical pickup unit and a carrying mechanism. The optical pickup unit has a first clamping portion and a second clamping part. The carrying mechanism includes a mounting plate, a first guiding component and a second guiding component. The mounting plate has a locking hole. At least one of the first guiding component and the second guiding component is a plate structure and has a hook. The hook is plugged into the locking hole for enabling the first guiding component or the second guiding component to be engaged with the mounting plate. The first clamping portion or the second clamping portion is respectively coupled to the first guiding component or the second guiding component for sliding the optical pickup unit along a first direction.

Abstract: The present invention relates to a disc data storage apparatus with a structure for preventing cracked discs from jetting out. The disc data storage apparatus has a tray for receiving a disc, a cover and a housing. The cover has a first portion and a second portion. The first portion is connected to a front flange of the housing, and the second portion is extended into the housing to form a barrier portion. When a disc cracks, the barrier portion is configured to stop and prevent the cracked disc from jetting out.

Abstract: An optical disk drive includes a case, a main body and a vibration reducing apparatus. The main body is disposed in the case. The vibration reducing apparatus is disposed between the case and the main body, generating a force at a distance to reduce vibration of the main body with respect to the case.

Abstract: While a tray moves into a disk drive, a clamper and a turntable are used to clamp a disk. While the tray is moving into the disk drive without a disk thereon, the clamper and turntable hit with each other, which generates an uncomfortable noise. The apparatus for reducing the noise is an improved clamper with holes thereon. Alternatively, the clamper is replaced by a clamping part, which includes a metal plate and a plastic plate. The plastic plate has a holder, which clips tight an extension of the metal plate. Therefore, the noise, which is generated from the collision of metal plate and the turntable, is reduced.

Abstract: A disc reading apparatus for preventing a cracked disc from jetting out is provided. The disc reading apparatus includes a disc tray and a housing. The disc tray includes a recess for receiving a disc, and the recess defines a recess flange. The housing includes an upper plate parallel to the disc tray, and the upper plate includes a barrier portion. The barrier portion further includes a plurality of bending boundaries and prevents a cracked disc from jetting out.

Abstract: An optical disk drive with a protected pick-up unit. The optical disk drive includes a core body, a guide bar, a pick-up unit and an impact-reducing mechanism. The core body has an operating zone. The guide bar is connected to the core body. The pick-up unit is movably supported by the guide bar to access an optical disk in the operating zone. The impact-reducing mechanism is disposed outside the operating zone to sustain impact of the pick-up unit when the pick-up unit moves outside the operating zone and collides with the impact-reducing mechanism.

Abstract: A disc drive includes a loader, a tray, a base, an OPU, and a restraining element. The base and the tray are movably disposed on the loader respectively. The OPU is movably disposed on the base. The restraining element is detachably disposed on the tray. When the disc drive is closed (the tray is in the disc drive), the restraining element substantially holds the OPU at a first position.

Abstract: A nozzle of a surface mount device (“SMD”) includes a shaft and a sleeve. The shaft includes a passage at an end and a passage at an opposite end. The passages are communicated for communicating air. The sleeve includes, at an end, a seat engaged with the shaft and, at an opposite end, an enlarged opening. The enlarged opening and an external diameter of the sleeve form a sucking surface. Because of the friction of sleeve of the nozzle with electronic components, a sleeve of a single can substitute for a plurality of nozzles of different sizes in order to reduce the frequency of replacement of nozzles.

Abstract: An apparatus for preventing a cracked disc from flying out of a disc data reading apparatus is provided. The apparatus includes a housing and a panel. The panel selectively connects with the housing. The housing has a protrusion connecting with a front edge of the housing. The panel has a first surface corresponding to the protrusion. While the disc within the disc data reading apparatus cracks, a force existing between the protrusion and the first surface prevents a cracked disc flying out.

Abstract: The present invention provides an optical disc drive that comprises a loader, a top case, and a bottom case. The loader is used for loading electronic parts of the optical disc drive. The top case covers the loader to form a top exterior of the optical disc drive. The bottom case covers the loader to form a bottom exterior of the optical disc drive. The top and bottom cases can be detached from the loader. A left side and a right side of the loader form the left exterior and the right exterior of the optical disc drive respectively.

Abstract: An optical disk drive is provided in the present invention. The optical disk drive includes a housing, a chassis connected to the housing for supporting a pickup, a support device connected to the housing for supporting the chassis, and an elastic device. When accidental forces are applied on the optical disk drive, the elastic device prevents the optical disk drive from breakdown caused by the vibration from the accidental force, to maintain the function and operational stability of the optical disk drive.

Abstract: A manually guided vehicle capable of working on rails is described. The manually guided vehicle has a frame, a set of moving wheels, a guiding wheel, and a supporting device. The moving wheels provide the manually guided vehicle with the capability of moving on rails or on the ground. The guide wheel provides the manually guided vehicle with the capability of moving along rails. The guide wheel can be raised to move the manually guided vehicle off of the rails directly. The supporting device provides double direction forking and horizontal rotating capabilities. The rails include a U-type guiding rail to limit the guide wheel to motion thereon. The manually guided vehicle further has a laser pointer to indicate the position of the manually guided vehicle and further cooperates with position labels stuck on working stations along the rail to enhance the parking position accuracy of the manually guided vehicle.

Abstract: The present invention relates to a disc data storage apparatus with a structure for preventing cracked discs from jetting out. The disc data storage apparatus has a tray for receiving a disc, a cover and a housing. The cover has a first portion and a second portion. The first portion is connected to a front flange of the housing, and the second portion is extended into the housing to form a barrier portion. When a disc cracks, the barrier portion is configured to stop and prevent the cracked disc from jetting out.

Abstract: An apparatus for preventing a cracked disc from flying out of a disc data reading apparatus is provided. The apparatus includes a housing and a panel. The panel selectively connects with the housing. The housing has a protrusion connecting with a front edge of the housing. The panel has a first surface corresponding to the protrusion. While the disc within the disc data reading apparatus cracks, a force existing between the protrusion and the first surface prevents a cracked disc flying out.

Abstract: A disc reading apparatus for preventing a cracked disc from jetting out is provided. The disc reading apparatus includes a disc tray and a housing. The disc tray includes a recess for receiving a disc, and the recess defines a recess flange. The housing includes an upper plate parallel to the disc tray, and the upper plate includes a barrier portion. The barrier portion further includes a plurality of bending boundaries and prevents a cracked disc from jetting out.

Abstract: While a tray moves into a disk drive, a clamper and a turntable are used to clamp a disk. While the tray is moving into the disk drive without a disk thereon, the clamper and turntable hit with each other, which generates an uncomfortable noise. The apparatus for reducing the noise is an improved clamper with holes thereon. Alternatively, the clamper is replaced by a clamping part, which includes a metal plate and a plastic plate. The plastic plate has a holder, which clips tight an extension of the metal plate. Therefore, the noise, which is generated from the collision of metal plate and the turntable, is reduced.