WO1993005509A1 - Magnetbandkassette - Google Patents
Magnetbandkassette Download PDFInfo
- Publication number
- WO1993005509A1 WO1993005509A1 PCT/EP1992/002054 EP9202054W WO9305509A1 WO 1993005509 A1 WO1993005509 A1 WO 1993005509A1 EP 9202054 W EP9202054 W EP 9202054W WO 9305509 A1 WO9305509 A1 WO 9305509A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- magnetic tape
- wall pieces
- tape cassette
- movable
- Prior art date
Links
- 230000008719 thickening Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000000295 complement effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
- G11B23/04—Magazines; Cassettes for webs or filaments
- G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
- G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores
- G11B23/08707—Details
- G11B23/08785—Envelopes
Definitions
- the invention relates to a magnetic tape cassette according to the preamble of claim 1.
- the thickening of the housing provided essentially as protection of the magnetic tape in the area of the housing engagement openings for sound recording and reproducing heads determines the overall thickness of the housing, which is thereby increased by about a third.
- the object of the invention is to reduce the housing thickness considerably without overriding the known component functions.
- playability on all conventional playback and recording devices is desirable.
- the movability achieved in the area of the thickenings leads to sufficient space for the recording and playback heads when using (recording, playback, rewinding) the magnetic tape cassette.
- the wall pieces forming the thickening are moved towards one another against a spring force, so that, ideally, they plunge so far into the remaining housing body that they are completely flush with the other wall surfaces.
- the storage dimension for the storage and transport (storage) of the magnet net tape cassette significantly reduced.
- some other measures, which are not part of the subject matter of the invention such as material thickness reductions that are readily possible, it is then even possible to accommodate two such magnetic tape cassettes in the same space that was previously used by a single magnetic tape cassette.
- the movable wall pieces of the housing body with the rest of the housing body or the corresponding housing body half (the housing bodies are usually constructed from two interconnected halves), in the transition area between the movable wall pieces and the rest of the housing body the material thickness and shape are selected so that there is a bellows-like or fil sharpening-like situation.
- this connecting element can also simultaneously apply the spring force required according to the invention.
- the movable wall pieces are designed as separate components from the rest of the housing body and are movably arranged on the rest of the housing body via springs and suitable guides.
- FIG. 1 shows a magnetic tape cassette half made from transparent housing material in internal view A according to FIG. 2;
- FIG. 2 shows the same component in a narrow side view (view B according to FIG. 1);
- FIG. 3 shows a (full) magnetic tape cassette corresponding to FIG. 1, an end-side broadside view (sound head side - view C according to FIG. 1 with movable pieces immersed inward);
- FIG. 4 the same magnetic tape cassette in the view corresponding to FIG. 3, but with wall pieces pushed outward and forming housing thickenings;
- FIG. 7 From the same magnetic tape cassette a (lower) front broadside view (corresponding to view D of FIG. 1); 6 shows a movable wall piece in a side view of a magnetic tape cassette corresponding to FIGS. 1 to 5 (view E according to FIG. 7);
- FIG. 7 the same wall piece in end view (view F according to FIG. 6);
- FIG. 8 shows an alternative embodiment of a movable wall piece in a side view (view G according to FIG. 9);
- FIG. 9 shows the same wall piece in frontal view (view H according to FIG. 8);
- FIG. 10 shows a spring and guide arrangement for a magnetic tape cassette according to the invention in the compressed state of the movable wall pieces
- FIG. 12 shows a cross-sectional illustration of the guide arrangement according to FIG. 11 (section along the line XI-XI); FIG.
- FIG. 13 alternative embodiments to the arrangements and 14 according to FIGS. 10 and 11;
- FIGS. 10 and 11 shows a further alternative embodiment to the and 16 arrangement according to FIGS. 10 and 11;
- 17 shows a third alternative for the arrangement according to FIGS. 10 and 11; 18 shows a further alternative to the arrangement according to FIG. And 19 10 and 11 without spring element.
- first housing half 1 which has engagement openings 11 and 12 for the tape drive, a further engagement opening 13 for the (sound) reproducing head and engagement openings 14 and 15 for (sound) recording and / or (sound) erasing heads .
- FIG. 3 it can be seen from FIG. 3 that the wall pieces 6 and 7 forming the housing thickenings 3 and 4 can be pushed into the two large side surfaces of the magnetic tape cassette to such an extent that they are aligned with the wall parts of each housing half 1 and 2.
- Two embodiments for such movable wall pieces 6 and 7 can be seen in FIGS. 6 and 7 and 8 and 9.
- the shape and size of the movable wall parts are selected such that they are located exclusively in the part of the housing which is used for winding the magnetic tape 5 (see magnetic tape reel 8 in Fig. 1) are not required. This is made clear by comparing the shape and size between FIGS. 1 and 6. As a result, a sufficiently high mechanical strength of the housing can be ensured in a simple manner, in particular in the area of the engagement openings 13 to 15.
- the movable wall pieces 6 and 7 cover at least one partial area their circumference with end walls or end wall pieces 9 can be seen. These can be interrupted to provide space for stiffening crosspieces 16 when the wall pieces are pushed inwards. Otherwise, the end walls 9 protect the gap between the housing and the wall pieces, which arises when the wall pieces are designed as components separate from the housing, which is the case in all of the exemplary embodiments shown in the drawing.
- 10 to 12 show complementary, cylindrically shaped guide elements 17 and 18 which project from each other from the wall pieces 6 and 7 and, preferably on their outer circumference, accommodate a spiral spring 21 which urges the two wall pieces 6 and 7 apart.
- a concentrically arranged screw 19 serves as an end stop when the wall pieces 6 and 7 are pushed apart (FIG. 11).
- circumferentially distributed guide pieces 22 can be used to guide the spring in the area of the inner guide element 18.
- the guide and suspension arrangements for the wall pieces 6 and 7 to be described and to be described below can be provided centrally and / or off-center on the wall pieces.
- 6 and 7 show an arrangement with three guide or spring elements, whereas in FIGS. 8 and 9 only two (eccentrically arranged) guide elements are shown.
- the cylindrical components 23 and 24 in connection with a retaining and guide pin 26 having double-sided end disks 25 likewise assume a certain leadership task, while in the embodiment according to FIGS 12 essentially the two guide elements 17 and 18 take on the main management role through their complementary design and complementary management areas.
- corresponding stop means 27, 28 on the wall pieces 6 and 7 on the one hand and the rest of the housing on the other hand ensure that the wall pieces 6 and 7 are always uniform on both sides of the rest of the housing to the outside be pushed.
- finger-shaped guide elements 29 and 30 are therefore also used (instead of cylindrical guide elements). B. u catch distributed, are mutually attached to the wall pieces 6 and 7 respectively.
- FIGS. 18 and 19 show an arrangement and securing of finger-shaped guide elements 31 and 32 which basically correspond to FIGS. 15 and 16, a spring not being provided at this point, but the guide again (as in FIGS. 15 and 16) in each case with respect to the housing halves 1 and 2 (and not in interplay with the complementary guide elements, as is the case in the embodiment according to FIGS. 10 to 12 and - conditionally - according to FIGS. 13 and 14).
Landscapes
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92919649A EP0602166A1 (de) | 1991-09-05 | 1992-09-04 | Magnetbandkassette |
JP5504965A JPH07500689A (ja) | 1991-09-05 | 1992-09-04 | 磁気テープカセツト |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG9110977.9U | 1991-09-05 | ||
DE9110977U DE9110977U1 (de) | 1991-09-05 | 1991-09-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993005509A1 true WO1993005509A1 (de) | 1993-03-18 |
Family
ID=6870927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1992/002054 WO1993005509A1 (de) | 1991-09-05 | 1992-09-04 | Magnetbandkassette |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0602166A1 (de) |
JP (1) | JPH07500689A (de) |
DE (1) | DE9110977U1 (de) |
WO (1) | WO1993005509A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3796394A (en) * | 1971-04-22 | 1974-03-12 | Polygon Concepts Inc | Cassette |
GB2150532A (en) * | 1983-11-28 | 1985-07-03 | Fukutake Shoten | Postable slim cassette |
US4633354A (en) * | 1983-04-26 | 1986-12-30 | Fuji Photo Film Co., Ltd. | Magnetic tape cassette |
DE9014777U1 (de) * | 1990-10-25 | 1991-10-31 | Basf Magnetics Gmbh, 6800 Mannheim, De |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6257980U (de) * | 1985-10-01 | 1987-04-10 | ||
NL8600423A (nl) * | 1986-02-20 | 1987-09-16 | Philips Nv | Magneetbandcassette, alsmede bandaandrukorgaan toepasbaar in een dergelijke cassette. |
-
1991
- 1991-09-05 DE DE9110977U patent/DE9110977U1/de not_active Expired - Lifetime
-
1992
- 1992-09-04 WO PCT/EP1992/002054 patent/WO1993005509A1/de not_active Application Discontinuation
- 1992-09-04 EP EP92919649A patent/EP0602166A1/de not_active Withdrawn
- 1992-09-04 JP JP5504965A patent/JPH07500689A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3796394A (en) * | 1971-04-22 | 1974-03-12 | Polygon Concepts Inc | Cassette |
US4633354A (en) * | 1983-04-26 | 1986-12-30 | Fuji Photo Film Co., Ltd. | Magnetic tape cassette |
GB2150532A (en) * | 1983-11-28 | 1985-07-03 | Fukutake Shoten | Postable slim cassette |
DE9014777U1 (de) * | 1990-10-25 | 1991-10-31 | Basf Magnetics Gmbh, 6800 Mannheim, De |
Also Published As
Publication number | Publication date |
---|---|
EP0602166A1 (de) | 1994-06-22 |
JPH07500689A (ja) | 1995-01-19 |
DE9110977U1 (de) | 1993-01-14 |
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