摘要:
A tape reel for a tape cassette capable of substantially preventing deformation thereof, even when it is thin-walled to substantially reduce a cycle time required for a molding step of the tape reel. The tape reel includes a reel hub and a disc-like flange. Reinforcing ribs include an annular rib arranged on an outer periphery of a disc-like flange and a plurality of linear ribs arranged on an outer surface of the disc-like flange so as to extend from a core stabilizing surface rib to the annular rib. The linear ribs are so arranged that each of the linear ribs intersects at least one of the other linear ribs at a position which is further than a midpoint between the core stabilizing surface rib and the annular rib.
摘要:
In a tape cartridge of the single-reel type having a hub on which a length of tape is wound, a brake mechanism contained in the hub is movable up and down to apply and release the brake on the tape reel. The brake mechanism and a brake lock release member disposed between it and the hub remain in sliding engagement after the release of the brake, and the resulting friction hampers smooth turning of the hub. Moreover, after the brake lock has been released, the center of the tape reel can be off the center of a rotating shaft of a recorder. The hub of the tape reel has holes formed in its bottom wall for engagement with the brake release plate, the brake release plate is mounted in the hub with legs fitted in the holes of the latter, the brake lock rests on the brake release plate, the brake lock is formed with a dent (or lug) with a spherical end and the brake release plate is formed with a corresponding lug (or dent) with a spherical end on its upper surface. A highly slippery sheet member is interposed between the contacting parts of the brake lock and the brake release plate.
摘要:
A tape cartridge including a single tape reel around which a length of magnetic tape is wound and which is turnably held within a housing, the beginning of the tape being fixed to a leader so that it can be drawn out through an opening formed in the housing by a tape drawing-out member of a recorder which has a pin-like or hooked end capable of engaging the tape end, said leader comprising a center part (pin-like member) on which the beginning of the tape is wound and a pair of engaging members joined to the upper and lower ends of the member so as to engage the tape drawing-out member of the recorder, said engaging members having a plurality of recesses each for engaging the drawing-out member. Thus the engaging members can consist of members identical in structure. In another embodiment the center member has position-confining portions formed close to its both ends to confine the positions of the engaging members.
摘要:
In a tape cassette comprising a housing made up of upper and lower casings, a pair of reels around which a tape is wound and contained altogether in the housing, the housing having openings formed at the front so that the tape supplied from one reel travels as exposed along the front and is taken up by the other reel, a front lid swingably attached to the housing to cover its front surface, and a spring member having a coiled portion fitted onto a pivot of the front lid and also having a free end secured to the inner surface of the upper casing to force the front lid in the closing direction by the spring action; a bend angled toward a direction away from the inner surface of the upper casing is formed at the free end of the spring member that applies the spring action to the front lid, and a rib to secure the free end of the spring member in place is formed at the front of the upper casing to which the front lid is attached.
摘要:
A tape reel for a tape cassette includes stabilizing ribs positioned on opposite sides of a deposition rib. The stabilizing ribs are lower in height than the deposition rib and are provided with an abutment surface which extends parallel to the joining surfaces of the reel hub and reel flange. As the deposition rib is melted to join the reel hub and reel flange together, the melt distributes uniformly between the joining surfaces of the reel hub and reel flange, thereby preventing any deformation of the tape reel, such as deflection and/or warpage of the outer periphery thereof. A simplified manufacturing process yielding uniform product quality results.
摘要:
A tape cartridge includes a single tape reel around which a length of magnetic tape is wound and which is turnably held within a housing. The beginning of the tape is drawn out through an opening formed in the housing by a tape drawing-out member of a recorder. The drawing-out member has an engaging member at the outer end. The housing has a cell in which a hook member to catch an engaging end of a leader tape, when the leader tape holding the beginning of the magnetic tape is used, is detachably fitted and a cell in which a leader member to hold the beginning of the magnetic tape, when the leader member is used, is contained. The housing is made using a mold which forms a cell having a leader member holding the beginning of the magnetic tape or which forms the cell without the leader member.
摘要:
A tape cartridge comprising a housing, a single tape reel around which a length of tape is wound and which is turnably held within the housing, a leader to which the beginning of the tape is secured, and a tape draw-out member by which the tape is pulled out through an opening formed in the housing into a recorder, characterized in that the leader is composed of a pin member, an elastomer clamp which is fitted around the pin member, a metal clamp fitted around the elastomer clamp, and a highly slippery member of synthetic resin placed between the elastomer clamp and metal clamp.
摘要:
A tape reel for a tape cassette wherein a pair of such reels are contained, comprising an upper flange and a hub which consists of a drum formed integrally with (formed in one piece with, or solidly joined to) a lower flange. The drum comprises an outer cylindrical part on which a tape is wound and an inner cylindrical part which permits the insertion of a driving shaft of a recording-reproducing device for the tape cassette. The inner cylindrical part has projections adapted to engage with the driving shaft, each said projection having a groove formed on the back side for thickness reduction, and the inner cylindrical part and inner ends and both side walls of the projections all have the same thickness. A plurality of connecting ribs are provided joining the outer and inner cylindrical parts of the drum, and extensions are formed outwardly on the inner cylindrical part, on both shoulder portions close to each said connecting rib. Alternatively, a plurality of ribs are formed along the inner circumference of the outer cylindrical part, extending from the outer cylindrical part toward, but short of, the inner cylindrical part.
摘要:
A reel spring for tape cassettes includes at least two mounting holes which are formed in the base portion at opposite sides with respect to a tape reel centerline connecting reel centers and in such a manner to be spaced in the direction of the tape reel centerline, and which is used for melt-bonding with the cassette housing. The base portion is arranged so as to have a center laid on the tape reel centerlines, respective end portions are arranged so as to have their centerlines passed through respective contact points for urging a pair of tape reels, extended in parallel with each other and deviated with respect to the tape reel centerlines. The width of the base portion is substantially the same as that of the end portions. The reel spring is prepared through a cutting step for cutting a stock up to positioning holes from opposite edges of the stock so that the cutting is made with the same width as the width of a reel spring end portion, along separation lines which deviate with respect to the tape reel centerline, extend in parallel with one another and pass in the vicinity of the mounting holes, the separation lines including separation lines for reel spring end portions at one side and separation lines for reel spring end portions at the other side which are out of alignment.
摘要:
A tape cassette comprises a cassette casing composed of an upper casing and a lower casing; a pair of tape reels rotatably installed in the cassette casing and wound with a tape; a guide pin for controlling a running position of the tape; and a rotatable opening and closing lid for covering an opening portion of the cassette casing for drawing out the tape. A protrusion or protrusions are provided for restraining a height of the guide pin on a bottom face of a recess for inserting the guide pin provided on an inner face of the upper casing.