GB2212971A - Head connecting flexible flat cable for tape recorder of the automatic reversing type - Google Patents
Head connecting flexible flat cable for tape recorder of the automatic reversing type Download PDFInfo
- Publication number
- GB2212971A GB2212971A GB8809101A GB8809101A GB2212971A GB 2212971 A GB2212971 A GB 2212971A GB 8809101 A GB8809101 A GB 8809101A GB 8809101 A GB8809101 A GB 8809101A GB 2212971 A GB2212971 A GB 2212971A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flat cable
- flexible flat
- head
- magnetic head
- curved section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
- H01R12/592—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connections to contact elements
Landscapes
- Magnetic Heads (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Insulated Conductors (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
Abstract
A magnetic head connecting flexible flat cable for a tape recorder of the automatic reversing type (11) is connected between the magnetic head (6) and an amplifier circuit (12) for driving the magnetic head (6) and has, adjacent a head side connecting section (13) thereof at which it is connected to a terminal (7) of the magnetic head (6), a curved section (16) which is curved in such a manner as to extend substantially in an arc around the axis of turning motion of the magnetic head (6). When the magnetic head (6) is turned over, the curved section (16) of the cable (11) is operated to wrap around or unwrap from the head holder (3) (Fig 1,2) so that the turning force is absorbed by the curved section (16) and hence transmitted to neither of the connecting portions (13,14) of the cable (11). <IMAGE>
Description
HEAD CONNECTING FLEXIBLE FLAT CABLE FOR TAPE
RECORDER OF THE AUTOMATIC REVERSING TYPE
BACKGROUND OF THE INVENTION 1) Field of the Invention
This invention relates to a head connecting flexible flat cable for a tape recorder of the automatic reversing type which is used to establish an electric connection between a magnetic head of the turnover type and an amplifier circuit for driving the magnetic head.
2) Desori#tion of the Prior Art
Tape recorders of the automatic reversing type are already known wherein a magnetic head is turned over by 180 degrees as the tape feeding direction reverses.
Such a magnetic head is electrically connected to an amplifier or driver circuit for driving the magnetic head by suitable connecting means. Since the magnetic head is turned over by 180 degrees around a horizontal axis while the amplifier circuit is provided at a stationary portion of the tape recorder, the connecting means must be such that it does not resist turning motion of the magnetic head.
An exemplary one of conventional connecting means is illustratively shown in FIG. 4. Referring to FIG. 4, a head holder c is supported for rotation around a horizontal axis on a base member b secured to a head mounting plate a, and a magnetic head d is secured at a frond end of the head holder c. The magnetic head d has electric terminals e on a rear end face thereof, and a thin conductor line g is securely connected at one end thereof to each of the electric terminals e of the magnetic head d by soldering or by some other suitable means. Each of the conductor lines g is covered by a vinyl insulator coating f.
Where the magnetic head d is of the 2-channel type, it has a total of 5 terminals e including 4 signal terminals and one shield terminal which is provided to ground the entire magnetic head d. Accordingly, a total of 5 conductor lines g are individually connected to the terminals 3 of the magnetic head d. In order to prevent an error in wiring of the individual conductor lines g from the terminals e, the vinyl insulator coatings f are made different in color from one another. The conductor lines g are passed through a conductor line passing hole h formed along the axis of rotation of the head holder c and are led out rearwardly from the rear end of head holder c.The other ends of the conductor lines g are securely connected to an amplifier circuit i by soldering or by some other suitable means, thereby establishing an electric connection between the magnetic head d and the amplifier circuit i.
In the conventional head connecting structure described above, the vinyl insulator coatings f which cover the individual conductor lines g are necessarily made different in color from one another. Accordingly, construction and operation of wiring of the conductor lines g are complicated.
Further, since the conductor lines g present a smallest thickness at boundary portions j between the soldered portions and the conductor line portions, they may be broken or disconnected at one of such boundary portions j after the conductor lines g have been repetitively bent by rotation of the magnetic head d or by back and forth movement of the head mounting plate a.
In order to prevent such a disconnection of the conductor lines g at the boundary portions j near the soldered portions, end portions of the conductor lines g near the soldered portions must be securely fixed by a bonding agent or by some other suitable means together with the vinyl insulators f. This makes construction and wiring operation of the conductor lines g further complicated.
Meanwhile, the 5 conductor lines g are bundled together and are passed through the conductor line passing hole h provided along the axis of rotation of the head holder c. The conductor lines g thus resist rotation of the head holder c in either of the opposite forward and reverse directions, and this tendency particularly increases as the temperature lowers.
Accordingly, the turning force of a turning over mechanism not shown for the magnetic head d must be increased. Besides, since it is difficult to increase the diameter of the conductor line passing hole h from a point of view of. the spacing; it is impossible to pass a flexible printed circuit board in place of the plurality of conductor lines g.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a magnetic head connecting flexible flat cable for a tape recorder of the automatic reversing type which is simplified in structure and wiring operation, eliminates a trouble of breaking of wire at a soldered portion, and does not resist against turning over of a head holder.
In order to attain the object, according to the present invention, there is provided a head connecting flexible flat cable for a tape recorder of the automatic reversing type for establishing an electric connection between an amplifier circuit and a magnetic head which is turned over by 180 degrees around an axis perpendicular to a tape contacting face of the magnetic head as the feeding direction of a magnetic tape for recording or reproduction reverses, the flexible flat cable having, adjacent a head side connecting section thereof at which the flexible flat cable is connected to a terminal of the magnetic head, a curved section which is curved in such a manner as to extend substantially in an arc around the axis of turning motion of the magnetic head.
With the flexible flat cable of the present invention, since the curved section of the flat cable which establishes an electric connection between the amplifier circuit and the magnetic head which is turned over by 180 degrees as the feeding direction of a magnetic tape reverses extends substantially in an arc around the axis of rotation of the head holder, the turning force when the magnetic head makes a turning over operation is absorbed by the curved section and is not transmitted to the head side connecting section nor to the amplifier side connecting section of the flexible flat cable.Accordingly, neither of the head side connecting section and the amplifier side connecting section of the flexible flat cable is broken or disconnected by an influence of a turning over operation of the magnetic head, and therefore a turning over operation of the head holder can be performed smoothly.
A specific embodiment of the present invention will now be described in detail by way of example with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a magnetic head supporting structure in which a flexible flat cable of the present invention is incorporated;
FIG. 2 is a sectional view taken along line Il-Il of FIG. 1;
FIG. 3 is a fragmentary perspective view of the flexible flat cable of FIG. 1 connecting to a magnetic head and an amplifier circuit; and
FIG. 4 is a view similar to FIG. 2 but illustrating a conventional means for connecting a magnetic head and an amplifier circuit to each other.
DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENT
Referring to FIGS. 1 to 3, a magnetic head supporting structure in which a flexible flat cable of the present invention is incorporated is shown. The magnetic head supporting structure shown includes a head mounting plate 1, and a base member 2 having a channel shaped vertical section and secured to an upper face of the head mounting plate 1. A head holder 3 is supported for rotation around a horizontal axis on the base member 2. As particularly seen in FIG. 2, a front half 4 of the head holder 3 in the direction of the axis thereof has a larger diameter than a rear half 5 thereof. The larger diameter portion 4 of the head holder 3 is supported for rotation in a front wall 2a of the base member 2 while the smaller diameter portion 5 is supported for rotation on the other rear wall 2b.
The larger diameter portion 4 of the head holder 3 has an inner bore or fitting hole 4a formed therein, and magnetic head 6 is fitted in and secured to the fitting hole 4a. Referring to FIG. 3, the magnetic head 6 has a plurality of (5, for example) terminals 7 provided projectingly on a rear face 6b thereof remote from a tape contacting face 6a thereof at which the magnetic head 6 is to contact with a magnetic tape not show for recording or reproduction.
A gear 8 is secured at the rear end of the smaller diameter portion 5 of the head holder 3 and normally meshes with another gear not shown of a turning over mechanism not shown.
Referring back to FIG. 2, an opening 9 is perforated in a contiguous relationship to the fitting hole 4a in the axis direction in a radial wall 10 of the head holder 3 between the larger and smaller diameter portions 4 and 5. The opening 9 preferably extends in an arc, which may be eccentric, around the axis of rotation of the head holder 3, and a flexible flat cable 11 according to the present invention extends through the opening 9. The opening 9 thus has a circumferential extent sufficient for the flexible flat cable 11 to pass therethrough.
The flexible flat cable 11 is secured at one end thereof to the terminals 7 of the magnetic head 6 by soldering or by some other suitable means while the other end portion thereof is secured to an amplifier or driver circuit 12 for driving the magnetic head 6. An electric connection between the magnetic head 6 and the amplifier circuit 12 is thus established by the flexible flat cable 11.
Referring to FIG. 3, the flexible flat cable 11 includes a head side connecting section 13 provided at one end thereof and connected to the terminals 7 of the magnetic head 6, an amplifier side connecting section 14 provided at the other end thereof and connected to the amplifier circuit 14, and a communicating section 15 communicating both connecting sections 13, 14 with each other. The communicating section 15 of the flexible flat cable 11 has, adjacent the head side connecting section 13, a curved section 16 which is curved in such a manner as to extend in an eccentric arc around the axis of rotation of the head holder 3 and the magnetic head 6 over the smaller diameter portion 5 of the head holder 3. The curved section 16 is bent at the opposite ends thereof substantially perpendicularly in opposite directions to each other.
Referring to FIG. 2, the head side connecting section 13 of the flexible flat cable 11 is introduced into the fitting hole 4a through the opening 9 of the head holder 3 and is secured to the terminals 7 of the magnetic head 6. The curved section 16 is thus arranged in such a manner as to extend along an outer face of the smaller diameter portion 5 of the head holder 3. A portion of the communicating section 15 adjacent the curved section 16 between the curved section 16 and the amplifier side connecting section 14 is fitted and held in a slit 17 which is formed at the center of the top of the rear wall 2b of the base member 2 by a pair of horizontally inwardly extending tabs 17b. An opening 17a is left between the tabs 17b in order for the flexible flat cable 11 to be fitted into the slit 17 therethrough.
Referring to FIG. 1, as the feeding direction of a magnetic tape not shown reverses, the head holder 3 is turned over by 180 degrees around the horizontal axis in the clockwise or counterclockwise direction in FIG. 1 by the turning over mechanism not shown via the gear 8 held in meshing engagement with the gear not shown of the turning over mechanism. Upon rotation of the head holder 3 by 180 degrees around the horizontal axis perpendicular to the plane of tape contacting face 6a of the magnetic head 6, the curved section 16 is moved by the magnetic head 6 in such a manner as to wrap around or unwrap from the head holder 3.In particular, when the head holder 3 rotates in the clockwise direction in
FIG. 1, the curved section 16 of the flexible flat cable 11 is wrapped around the outer periphery of the smaller diameter portion 5 of the head holder 3, and when the head holder 3 rotates reversely in the counterclockwise direction, the curved section 16 is unwrapped from the outer periphery of the smaller diameter portion 5. The curved section 16 of the flexible flat cable 11 thus has a sufficient extent to allow such wrapping and unwrapping movement of the cable 11 around the smaller diameter portion 5 of the head holder 3.Due to such wrapping and unwrapping movement of the flexible flat cable 11, a turning over operation of the head holder 3 can be performed smoothly, and the turning force of the head holder 3 is not transmitted to fixing portions of the head side connecting section 13 of the flexible flat cable 11 to the terminals 7 of the magnetic head 6 nor to a fixing portion of the amplifier side connecting section 14 to the amplifier circuit 12. Therefore, no disconnection will be caused at such fixing portions of the flexible flat cable 11 by an influence of rotation of the head holder 3.
It is to be noted that the present invention is not limited to the specific embodiment described above and shown in the drawings. For example, while in the embodiment described above the curved section 16 of the flexible flat cable 11 is curved in such a manner as to partially surround the outer periphery of the smaller diameter portion 5 of the head holder 3, the flexible flat cable 11 may be wrapped around the head holder 3 in such a manner as to permit rotation of the head holder 3.
Further, the flexible flat cable 11 may be either a flexible printed circuit board as shown in the drawings or a flat vinyl wire.
Claims (5)
1. A head connecting flexible flat cable for a tape recorder of the automatic reversing type for estatlishing an electric connection between an amplifier circuit and a magnetic head which is turned over by 180 degrees around an axis perpendicular to a tape contacting face of said magnetic head as the feeding direction of a magnetic tape for recording or reproduction reverses, said flexible flat cable having, adjacent a head side connecting section thereof at which said flexible flat cable is connected to a terminal of said magnetic head, a curved section which is curved in such a manner as to extend substantially in an arc around the axis of turning motion of said magnetic head.
2. A flexible flat cable as set forth in claim 1, wherein said flexible flat cable is bent substantially perpendicularly in the opposite directions at the opposite ends of said curved section thereof.
3. A flexible flat cable as set forth in claim 1 or 2, wherein a portion of said flexible flat cable between said curved section and said head side connecting section extends through an opening formed in a radial wall of a head holder in which said magnetic head is securely mounted.
4. A flexible flat cable as set forth in any one of the preceding claims, wherein said flexible flat cable is fitted, at a portion thereof between said curved section and an amplifier side connecting section at-which said flexible flat cable is connected to said amplifier circuit, in a slit which is formed at a top portion of a wall of a stationary member by a pair of horizontally inwardly extending tabs with an opening left therebetween.
5. A head connecting flexible flat cable for a tape recorder of the automatic reversing type substantially as hereinbefore described with reference to, and as shown in, the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18458087U JPH0542574Y2 (en) | 1987-12-02 | 1987-12-02 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8809101D0 GB8809101D0 (en) | 1988-05-18 |
| GB2212971A true GB2212971A (en) | 1989-08-02 |
| GB2212971B GB2212971B (en) | 1991-11-06 |
Family
ID=16155696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8809101A Expired - Fee Related GB2212971B (en) | 1987-12-02 | 1988-04-18 | Printed flexible ribbon cable |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH0542574Y2 (en) |
| CN (2) | CN2054194U (en) |
| GB (1) | GB2212971B (en) |
| HK (1) | HK134493A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5130874A (en) * | 1991-02-07 | 1992-07-14 | International Business Machines Corporation | Disk file actuator with heat dissipation and simplified component mounting |
| EP0615230A2 (en) * | 1993-03-12 | 1994-09-14 | Koninklijke Philips Electronics N.V. | Magnetic-tape apparatus and magnetic-head unit for use in the magnetic-tape apparatus |
| EP0631282A2 (en) * | 1993-06-28 | 1994-12-28 | Koninklijke Philips Electronics N.V. | Magnetic cassette recorder |
| US5383074A (en) * | 1991-12-11 | 1995-01-17 | U.S. Philips Corporation | Auto-reverse magnetic-head unit having a flexible conductor board |
| US5644452A (en) * | 1994-04-18 | 1997-07-01 | Seagate Technology, Inc. | Apparatus connecting a flexible circuit to an actuator arm of a disc drive |
| US5677898A (en) * | 1992-09-30 | 1997-10-14 | Hasegawa; Norio | Disc cartridge container and apparatus having a plurality of cartridges arranged for simultaneous shutter opening closing |
| US5862014A (en) * | 1996-01-11 | 1999-01-19 | Quantum Corporation | Multi-channel magnetic tape head module including flex circuit |
| US5950789A (en) * | 1998-04-27 | 1999-09-14 | Caterpillar Inc. | End of fill detector for a fluid actuated clutch |
| EP0965980A1 (en) * | 1998-06-19 | 1999-12-22 | Deutsche Thomson-Brandt Gmbh | Device for amplifying and converting current signals into voltage signals |
| EP0965982A1 (en) * | 1998-06-19 | 1999-12-22 | Deutsche Thomson-Brandt Gmbh | Device for amplifying and converting current signals into voltage signals |
| EP1182749A1 (en) * | 1998-12-10 | 2002-02-27 | Japan Aviation Electronics Industry, Limited | Hinge connector extensible to a longitudinal direction |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3207583B2 (en) * | 1992-09-21 | 2001-09-10 | 松下電器産業株式会社 | Temperature distribution measurement device |
| JP3116826B2 (en) * | 1996-07-15 | 2000-12-11 | トヨタ自動車株式会社 | Preignition detection device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4436190A (en) * | 1981-07-29 | 1984-03-13 | Combustion Engineering, Inc. | Torsionless multiple connector reel device |
-
1987
- 1987-12-02 JP JP18458087U patent/JPH0542574Y2/ja not_active Expired - Lifetime
-
1988
- 1988-04-18 GB GB8809101A patent/GB2212971B/en not_active Expired - Fee Related
- 1988-11-22 CN CN88220184U patent/CN2054194U/en not_active Expired - Lifetime
- 1988-11-22 CN CN 88108047 patent/CN1023161C/en not_active Expired - Fee Related
-
1993
- 1993-12-09 HK HK134493A patent/HK134493A/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4436190A (en) * | 1981-07-29 | 1984-03-13 | Combustion Engineering, Inc. | Torsionless multiple connector reel device |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5130874A (en) * | 1991-02-07 | 1992-07-14 | International Business Machines Corporation | Disk file actuator with heat dissipation and simplified component mounting |
| US5383074A (en) * | 1991-12-11 | 1995-01-17 | U.S. Philips Corporation | Auto-reverse magnetic-head unit having a flexible conductor board |
| US5677898A (en) * | 1992-09-30 | 1997-10-14 | Hasegawa; Norio | Disc cartridge container and apparatus having a plurality of cartridges arranged for simultaneous shutter opening closing |
| EP0615230A2 (en) * | 1993-03-12 | 1994-09-14 | Koninklijke Philips Electronics N.V. | Magnetic-tape apparatus and magnetic-head unit for use in the magnetic-tape apparatus |
| EP0615230A3 (en) * | 1993-03-12 | 1995-04-05 | Koninkl Philips Electronics Nv | Magnetic-tape apparatus and magnetic-head unit for use in the magnetic-tape apparatus. |
| EP0631282A2 (en) * | 1993-06-28 | 1994-12-28 | Koninklijke Philips Electronics N.V. | Magnetic cassette recorder |
| EP0631282A3 (en) * | 1993-06-28 | 1995-03-22 | Philips Electronics Nv | Magnetic cassette recorder. |
| US5644452A (en) * | 1994-04-18 | 1997-07-01 | Seagate Technology, Inc. | Apparatus connecting a flexible circuit to an actuator arm of a disc drive |
| US5862014A (en) * | 1996-01-11 | 1999-01-19 | Quantum Corporation | Multi-channel magnetic tape head module including flex circuit |
| US5950789A (en) * | 1998-04-27 | 1999-09-14 | Caterpillar Inc. | End of fill detector for a fluid actuated clutch |
| EP0965980A1 (en) * | 1998-06-19 | 1999-12-22 | Deutsche Thomson-Brandt Gmbh | Device for amplifying and converting current signals into voltage signals |
| EP0965982A1 (en) * | 1998-06-19 | 1999-12-22 | Deutsche Thomson-Brandt Gmbh | Device for amplifying and converting current signals into voltage signals |
| US6954407B1 (en) | 1998-06-19 | 2005-10-11 | Deutsche Thomson-Brandt Gmbh | Current to voltage converter amplifier for use in a data reading device |
| EP1182749A1 (en) * | 1998-12-10 | 2002-02-27 | Japan Aviation Electronics Industry, Limited | Hinge connector extensible to a longitudinal direction |
| US6447314B1 (en) | 1998-12-10 | 2002-09-10 | Japan Aviation Electronics Industry, Limited | Hinge connector extensible to a longitudinal direction |
Also Published As
| Publication number | Publication date |
|---|---|
| HK134493A (en) | 1993-12-17 |
| CN1043033A (en) | 1990-06-13 |
| JPH0188420U (en) | 1989-06-12 |
| JPH0542574Y2 (en) | 1993-10-27 |
| GB2212971B (en) | 1991-11-06 |
| CN2054194U (en) | 1990-03-07 |
| GB8809101D0 (en) | 1988-05-18 |
| CN1023161C (en) | 1993-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19950418 |