Method for manufacturing a reel
a manufacturing method and reel technology, applied in the field of magnetic tape cartridges, can solve the problems of reducing the mesh between the reel gear and the driving gear, and affecting the operation reliability of the reel-rotation restraining means, so as to reduce the contact area, and reduce the contact area
Inactive Publication Date: 2006-12-07
FUJIFILM CORP
View PDF13 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The solution ensures stable and reliable operation of the reel-rotation restraining mechanism, preventing tape jamming and ensuring reliable forwarding and rewinding of magnetic tape by maintaining a stable release operation and reducing friction resistance.
Problems solved by technology
However, piercing the reel gear and boring the through holes, as described above, will reduce the mesh between the reel gear and the driving gear and therefore become a problem with respect to driving the reel reliably.
If the through hole is reduced from such a respect, the shape of the portion of the releasing member inserted into this through hole will also become smaller and therefore there is a possibility that it will become unstable for the tooth edge of the driving gear to abut the reduced portion accurately and give a reliable pushing operation.
In addition, in the case where the pushing-up portions are formed in part of the releasing member and are inserted into the through holes of the reel and slid, as described above, the releasing member is subjected to the urging force of the urging member and gives rise to bending deformation.
As a result, since a tilting force acts on the push-up portion, part of the outside surface is pushed against the inner surface of the through hole and the friction resistance becomes greater, the sliding between the pushing-up portion and the through hole is disturbed, and there is a possibility that the releasing member will not be able to release the restraining member reliably.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0106] The present invention will hereinafter be described in detail, based on embodiments shown in the drawings. FIG. 1 is a sectional view of a magnetic tape cartridge of an embodiment in the non-operative condition, FIG. 2 an exploded perspective view of the essential parts, and FIG. 3 a sectional view of the essential parts in the operative condition.
[0107] The magnetic cartridge 1 is constructed so that magnetic tape (not shown) is wound on a single reel 2 and that the reel 2 is housed rotatably within a cartridge case 3. The cartridge case 3 is formed by fastening an upper case 31 and a lower case 32, which is provided at a center portion thereof with an opening 32a, together with vis screws, etc. The magnetic tape cartridge 1 is also equipped with reel-rotation restraining means 10 for allowing rotation of the reel 2 when being used, and restricting the rotation when not being used.
[0108] The reel 2 consists of a bottomed cylindrical reel hub 21, in which magnetic tape is w...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| wear-resisting property | aaaaa | aaaaa |
| angle | aaaaa | aaaaa |
| time | aaaaa | aaaaa |
Login to View More
Abstract
ingle reel with magnetic tape wound thereon is housed in a case. A restraining member, for restricting rotation of the reel by moving toward or away from the reel, is urged in a restraining direction by an urging member. The pushing-up portions of a releasing member are inserted into the through holes bored in the reel gear of the reel 2 so that the lower ends can abut a driving gear. The releasing member moves the restraining member in a releasing direction by moving according to the chucking operation of drive-side rotation drive. A method for manufacturing the reel includes molding a metal reel plate on a bottom surface thereof by insert molding by use of a metal mold in which a hold member for holding an inner peripheral surface of the reel plate is disposed on an outer periphery of a gate.
Description
TECHNICAL FIELD [0001] The invention relates to a magnetic tape cartridge and more particularly relates, in a magnetic tape cartridge for rotatably housing within a cartridge case a single reel having magnetic tape wound thereon, to the structure of reel-rotation restraining means for causing the reel to be in a rotation-restrained state when not being used. BACKGROUND ART [0002] In conventional tape cartridges used as storage media that are employed in external storage units for computers, etc., there is known a type in which magnetic tape is wound on a single reel and this reel is rotatably housed within a cartridge case. This magnetic tape is employed as a data storing tape for computers, etc., and because important information is stored, reel-rotation restraining means to restrict rotation of the reel is installed so that problems, such as tape jamming, etc., do not occur and so that the magnetic tape is not forwarded unexpectedly when not being used, such as when being archived...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & AuthorityApplications(United States)
IPC IPC(8): B29C45/14G11B23/04G11B23/107
CPCG11B23/107G11B23/043
InventorMORITA, KIYOOTAKAHASHI, DAISUKESHIGA, HIDEAKITSUYUKI, SEIJIISHIHARA, YUSUKE
OwnerFUJIFILM CORP