Samsung Electronics Co., Ltd.

Do-young Choi

Bong-joo Kim

Seung-Woo Lee

Young-Ho Cho

Hyeong-Seok Choi

Jun-young Kim

Sung-hee Hong

Jeong-Hyeob Oh

Jae-kab Seo

Jae-hoon Sim

Chung-hum Baik

Tae-gil Kang

Byeng-Bae Park

Seung-Han Lee

Byeng-bae Park

Choong-Hum Baik

Myoung-Joon Kim

A power supply device of a tape-end detecting sensor for a tape recorder. The power supply device comprises a reel cover disposed on a sub-chassis, with a tape-end detecting sensor being seated on the reel cover for detecting the passing of a terminal end of a magnetic portion of a magnetic tape, a first power transmitting member mounted in the reel cover to be connected to the detecting sensor and having a first contacting portion, and a second power transmitting member disposed on the sub-chassis and having a second contacting portion that comes into contact with the first contacting portion when the reel cover is mounted on the sub-chassis. The power supply device further comprises a resilient pressing member integrally formed with the sub-chassis, for resiliently pressing the second contacting portion toward the first contacting portion to improve a contacting force between the first and the second contacting portions.

Electric power supply device of a tape-end detecting sensor for a tape recorder

A head drum assembly for a compact-size camcorder such as a digital video camera comprised of a drum cover, stationary and rotating drum, a subcircuit board, a stationary and rotating transformer and a motor stator and rotor. By forming the drum cover, which is attached to the shaft of the rotary drum above the rotary drum, with a conductive material such as an aluminum alloy, the need for a conductive bushing member and earthing plate for the insulating drum cover of the head drum assembly can be omitted, resulting in an overall simpler. As the number of components and manufacturing steps decreases, the manufacturing costs decrease and productivity increases.

Head drum assembly for a tape recorder

A head drum assembly of a tape recorder in which an inner race and an outer race of an upper bearing are press-fitted onto a shaft and a rotary drum, respectively, thereby applying a preload. A resilient body, such as a compressed coil spring, is disposed between a lower bearing disposed between the rotary drum and the shaft and a stationary drum. The resilient body upwardly presses the inner race of the lower bearing, thereby applying a preload. Accordingly, the head drum assembly of the tape recorder provides enhanced assembling efficiency and reduced manufacturing costs.

Head drum assembly of a tape recorder having a resilient body to preload bearings thereof

A deck mechanism for a magnetic recording/reproducing apparatus comprises a main deck provided with a head drum, a capstan motor, and a sub-deck installed on the main deck to be loaded/unloaded. The sub-deck is provided with a pair of reel discs, onto which tape reels of a tape cassette are seated; a pole base loading unit; a pinch roller unit for compressing the tape against a spindle of the capstan motor when the sub-deck is loaded; a brake unit; a main sliding member mounted on the main deck to be capable of reciprocatingly sliding, the main sliding member controlling the driving of the pinch roller unit; and a main cam gear mounted on the main deck. The main cam gear causes the sub-deck, the pole base loading unit, the brake unit, and the main sliding member to perform linked movements while the main cam gear is rotationally driven.

Tape deck mechanism with main cam gear moving sub-deck, pole base loading unit, brake unit and main sliding memeber

An improved magnetic tape guiding device for use with a magnetic tape transport system of a tape recorder and the like, and a method for using the same. The magnetic tape guiding system of the tape recorder transport system has a supply reel pole base assembly having a slant pole with a first guide unit having portions formed at both ends of the slant pole to function as a conventional roller for regulating upward and downward movement of the upper and lower edges of a moving magnetic tape, and a tension pole assembly having a tension pole with a second guide unit having portions formed at both ends of the tension pole to function as a conventional impedance roller for regulating upward and downward movement of the upper and lower edges of the moving magnetic tape. This arrangement can thus achieve 2-dimensional plane-traveling of the magnetic tape while also reducing the number of the parts of the guiding system.

Magnetic tape guiding device for use with a tape transport system of a tape recorder and method for using the same

A power supply device of a tape-end detecting sensor for a tape recorder. The power supply device comprises a reel cover disposed on a sub-chassis, with a tape-end detecting sensor being seated on the reel cover for detecting the passing of a terminal end of a magnetic portion of a magnetic tape, a first power transmitting member mounted in the reel cover to be connected to the detecting sensor and having a first contacting portion, and a second power transmitting member disposed on the sub-chassis and having a second contacting portion that comes into contact with the first contacting portion when the reel cover is mounted on the sub-chassis. The power supply device further comprises a resilient pressing member integrally formed with the sub-chassis, for resiliently pressing the second contacting portion toward the first contacting portion to improve a contacting force between the first and the second contacting portions. Accordingly, the contacting force between the first and the second contacting portions can be improved without employing a separate resilient pressing member and thus, the number of manufacturing process and the manufacturing cost can be decreased.

A moving deck plate for a camcorder has a sub-chassis slidably moving with respect to a main chassis. A drum base is integrally formed with the main chassis. A pair of stationary guide rails are integrally protruded from both sides of the drum base. A pair of movable guide rails provided at the sub-chassis are docked to the pair of stationary guide rails to form a moving path, along which a pair of pole bases move to draw a magnetic tape from the tape cassette. One of the stationary guide rails is coupled to the drum base by a first bridge-type reinforcing rib.

Moving deck plate for camcorder

A reel brake assembly for a magnetic recording/reading apparatus comprises a sub-deck slidably disposed on a main-deck in which a head drum is mounted, a reel table rotatably disposed in the sub-deck, for selectively driving a tape reel of a tape cassette, a brake unit pivotably disposed on the sub-deck, for selectively braking the reel table, and a cam gear rotated by a driving force of a driving motor, for moving the sub-deck to load and unload the sub-deck. The brake unit is selectively brought into contact with and separated from the reel table in relation to movement of the cam gear when the sub-deck is loaded and unloaded.

Reel brake assembly for a magnetic recording/reading apparatus

A tape guide device for a magnetic recording/reproducing apparatus includes a pole base assembly to guide a tape supplied from a supply reel and passed through a predetermined path to be moved horizontally to a read surface of a head drum. The pole base assembly includes a pole base installed adjacently to or separately from one side of the head drum during a loading/unloading operation of the tape. The pole base assembly also includes a pole unit including a spiral flange inclined to the pole base to be in a horizontal direction to the read surface of the head drum, to guide the tape entering the head drum to be inclined at a predetermined angle and positioned in the horizontal direction to the read surface.

Tape guide device for magnetic recording/reproducing apparatus

A head drum apparatus comprises: a lower drum; a stationary shaft pressed and fitted into a center hole of the lower drum; an upper drum rotatably coupled to the stationary shaft via at least one bearing; a boss fixed to the top portion of the stationary shaft by means of a set-screw; a motor rotor mounted to the top surface of the upper drum; a motor stator fixed to the boss, the motor stator being opposite to the motor rotor; and a ground device. The ground device includes an anchor member anchored to the upper surface of the boss and an elastic member fixed to the bottom surface of the anchor member. The elastic member extends downwardly through a bore in the boss, and a ground member is fixed to tile lower end of the elastic member. The ground member is in elastic contact with an outer race of an upper bearing. Accordingly, the assembly and the disassembly operations of the components of the ground device become simpler and easier, thereby increasing the productivity and enhancing the service operation efficiency thereof.

Ground device of head drum apparatus

A tape loading apparatus for a tape recorder having a structure for moving a sub-chassis of the tape recorder such as a compact camcorder. The loading apparatus for a tape recorder includes a pair of first links which are rotatably installed about a predetermined supporting point on a first chassis, and are movably connected to a second chassis by a predetermined distance, to thereby rotate by a predetermined angle according to the movement of the second chassis. An elastic member is provided which applies a retroactive force to the first links at a predetermined rotation position of the first links, by mutually connecting the first links while interposing the supporting point of the first links. Moreover, a pair of second links is provided for imparting moving forces to the pole bases according to the rotation of the first links by connecting the first links with the pole bases, respectively. The loading apparatus of the tape recorder reduces the number of the necessary components as well as a loss of a movement force. Since the various procedures are performed simultaneously, it takes a short time to load a magnetic tape. Further, deformation of the components due to the compression retroactive force and lowering of the precision does not occur.

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Suwon, South Korea

Do-young Choi