GB2248515A - A cassette loading/unloading apparatus for a tape recorder - Google Patents
A cassette loading/unloading apparatus for a tape recorder Download PDFInfo
- Publication number
- GB2248515A GB2248515A GB9109671A GB9109671A GB2248515A GB 2248515 A GB2248515 A GB 2248515A GB 9109671 A GB9109671 A GB 9109671A GB 9109671 A GB9109671 A GB 9109671A GB 2248515 A GB2248515 A GB 2248515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cassette
- spring
- turning
- ejecting
- tape
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/675—Guiding containers, e.g. loading, ejecting cassettes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/675—Guiding containers, e.g. loading, ejecting cassettes
- G11B15/6751—Guiding containers, e.g. loading, ejecting cassettes with movement of the cassette parallel to its main side, i.e. front loading
Landscapes
- Feeding And Guiding Record Carriers (AREA)
- Replacement Of Web Rolls (AREA)
Abstract
An automobile cassette loading/unloading apparatus has a spring receptacle member (13) pivotable on a pivoting member (8) to support a cassette holder (9), a cassette engaging member (15) movable in the cassette loading direction, and a turning spring (20) between the cassette engaging member (15) and the spring receptacle member (13), in which spring (20) turns in the cassette inserting direction so that the cassette (12) is inserted by the resilient force of the spring (20). For unloading, pivot (14) of the spring receptacle member (13) allows the turning spring (20) to be turned in the cassette ejecting direction to eject the cassette by the resilient force of the turning spring (20). Turning of the spring (20) is promoted by forming a gap (G) on a joint portion between the cassette ejecting member and the spring receptacle member. <IMAGE>
Description
A CASSETTE LOADING/UNLOADING APPARATUS FOR A TAPE RECORDER
Field of the Invention
The present invention relates to a cassette loading/unloading for a tape recorder which improves a turning operation of a turning spring to allow a tape cassette to be entered into or separated from a cassette holder by the resilient force thereof.
Background of the Invention
The following conventional tape recorder for a vehicle is well-known in the art.
The conventional tape recorder includes a spring receptacle member pivotable on the pivoting member to connect and support the cassette holder, a cassette engaging member movable in the cassette inserting direction, and a turning spring located between the cassette engaging member and the spring receptacle member. Where the tape cassette is in the midist of entering into the cassette holder, the movement of the cassette engaging member allows the turning spring to be turned in the cassette inserting direction. The cassette is inserted to a predetermined position in the cassette holder by the resilient force of the turning spring after turning.
For cassette ejecting operation, the pivot of the spring receptacle member allows the turning spring to be turned in the cassette ejecting direction.
The cassette is ejected in the cassette ejecting direction by the resilient force of the turning spring after turning.
In these kind of tape recorders, while the cassette may be surely loaded if the resilient force of the turning spring becomes stronger and stronger, the cassette may not be surely loaded when inserting it or unloaded due to the deficiency of the turning force of the turning spring when ejecting it if the resilient force of the turning spring is weak.
Attention is paid to the method of smooth insertion of the cassette with maintaining reliability of the cassette loading/unloading operation.
This kind of conventional cassette loading/unloading apparatus of the tape recorder is disclosed, for example, in a Japanese Utility Model Laid Open
No. 133250 /87. The conventional apparatus includes a torsion spring mounted on a pivoting member. Where a spring receptacle member is pivoted by the cassette ejecting operation, the spring receptacle member pushes one end of the torsion spring so that the torsion spring itself stores a resilient force in the cassette ejecting direction. With this resilient force of the torsion spring, the turning operation of the torsion spring in the cassette ejecting direction is improved. While the mechanism disclosed in the Japanese Utility Model Laid Open No. 133250 / 87 relatively provides reliability of the cassette ejecting operation, one torsion spring should be separately added.Moreover, since no function is made by the torsion spring when inserting the cassette, the added torsion spring makes the turning spring weak so that a reduction effect of the cassette inserting force can not be expected.
Summary of the Invention
It is an object of the present invention to provide a cassette loading / unloading apparatus for a tape recorder which promote a turning operation of a turning spring in both loading and unloading direction of a tape cassette without separately adding any of the parts so that the cassette inserting force is reduced.
In order to achieve the object of the invention, the invention resides in a cassette loading/unloading apparatus for a tape recorder including a spring receptacle member pivotable on the pivoting member to support a cassette holder and a cassette engaging member reciprocally movable in the cassette loading/unloading direction, wherein, where a tape cassette is loaded into the cassette holder, the movement of said cassette engaging member allows a turning spring positioned between said cassette engaging member and said spring receptacle member to be turned in the cassette inserting direction so that said tape cassette is inserted in said cassette holder by the resilient force of said turning spring after turning, where said tape cassette is unloaded from said cassette holder, the pivot of said spring receptacle member allows said turning spring to be turned in the cassette ejecting direction so that said tape cassette is engaging in the cassette ejecting direction by the resilient force of said turning spring after turning, characterized in that a turning operation of said turning spring is promoted by forming a gap approximately in running direction of a cassette ejecting member on the joint portion between said cassette ejecting member and said spring receptacle member.
With the existence of the gap on the joint portion between the cassette ejecting member and the spring receptacle member, where the turning spring just passes by the dead point, the spring receptacle member rapidly pivots just as much as the gap so that the turning operation of the turning spring is promoted.
Brief Description of Drawings
The present invention will become more readily apparent from the following description of a preferred embodiment thereof shown, by way of example only, in the accompanying drawings, wherein:
FIG 1 is a plan view of the cassette loading/unloading appratus for
the tape recorder according to the invention when the tape cassette
is unloaded
FIG 2 and FIG 3 are cross-sectional views for illustrating the
tape cassette loading operation of the apparatus ;
FIG 4A is a plan view of the apparatus when the tape cassette is in
the midst of loading ;
FIG 4B is an enlarged view of the spring receptacle member portion
in the FIG 4A ;;
FIG 5 is a plan view of the apparatus when the tape cassette is
completely loaded
FIG 6A is a plan view of the apparatus when the tape cassette is
beginning to be unloaded
FIG 6B is an enlarged view of the spring receptacle member portion
in the FIG 6A ; and
FIG 7 is a plan view of the apparatus just before the tape cassette
is finished to be unloaded.
Detailed Description of the Invention
A preferred embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawings.
FIG 1 is a plan view of a cassette loading/unloading apparatus of a tape recorder according to the invention when the tape cassette is unloaded.
In the drawing, a main base plate is designated as 1. Disposed on the main base plate 1 is a tape driving mechanism which includes a pair of reel shafts 2a and 2b, a pair of capstans 3a and 3b, and a motor 4 which drives the reel shafts and the capstans. The motor 4 makes it possible to simultaneously rotate both capstans 3a and 3b in each tape transport direction and to selectively rotate both reel shafts 2a and 2b in each tape take-up directiion.
There are also shown a magnetic head 5 for use in recording/reproducipq and a pair of pinch rollers 6a and 6b corresponding to both capstans 3a and 3b.
The magnetic head 5 is fixed to a head mounting plate 7 which is installed to move forwardly or backwardly on the main base plate 1. Both pinch rollers 6a and 6b are selectively contacting to the corresponding capstan linked with the head mounting plate 7.
As shown in FIG 2 and FIG 3 along with FIG 1, a pivoting member 8 is mounted on the upper portion of the main base plate 1 so as to pivot upward or downward (that is, perpendicular direction with the paper surface of FIG 1) with making the upper end portion of the FIG 1 as a shaft A cassette holder 9 is connected to the pivoting end of the pivoting member 8 so as to make upward or downward parallel movement (that Is perpendicular direction with the paper surface of FIG 1).
The upward pivoting amount is regulated by contacting the cassette holder 9 to a bent piece 10 formed on the upper portion of the side wall of the main base plate 1. With the existence of the bent piece 10, the pivoting member 8 and the cassette holder 9 are maintained in roughly parallel with the main base plate 1 where they are moved upward.
The cassette holder 9 includes a cassette entrance 11 in the lower side in
FIG 1 (right side in FIG 2). A tape cassette 12 may be loaded or unloaded through the cassette entrance 11 as illustrated in FIG 1 in which the cassette holder 9 is positioned in upward movement state (a cassette unloaded position). As shown in FIG 3 in which the tape cassette 12 is loaded in the cassette holder 9, if the pivoting member 8 pivots in the lower direction by a spring (not shown) so that the cassette holder 9 reaches a cassette loaded position (that is operating position), the tape cassette 12 is engaged into the reel shafts 2a and 2b and the capstan 3a and 3b.
Where the cassette holder 9 moves from the cassette unloaded position to the cassette loaded position, the head mounting plate 7 moves left side in
FIG 1 so that the magnetic head 5 is inserted into the tape cassette 12 so as to contact the head 5 to a magnetic tape (not shown) in the cassette.
Both pinch rollers 6a and 6b in coupled with the movement of the head mounting plate 7 approach the tape cassette 12. In particular, a pinch roller located in same side with a reel shaft which is driven by the motor 4 contacts the corresponding capstan through the magnetic tape. As described above, the magnetic tape is running one direction so as to make recording or reproducing.
Mounted on the upper surface of the pivoting member 8 is a spring receptacle member 13 of which one end is pivotably mounted by a pivot pin 14. Also mounted on the pivoting member 8 is a cassette engaging member 15 which is movable on the loading/unloading direction (upper/lower direction in FIG 1) of the tape cassette 12.
As shown in FIG 2, one end of the cassette engaging member 15 (upper portion in FIG 1) includes a contacting portion 16 which contacts the tape cassette 12 loaded in the cassette holder 9, and the other end of the member 15 includes a projecting portion 17 which engages one of reel hub space 12a of the tape cassette 12 loaded in the cassette holder 9. The cassette engaging member 15 is also contacting to a long track 18 formed in the pivoting member 8.
On the other hand, the pivoting end of the spring receptacle member 13 is mounted to be directed toward the cassette engaging member 15. There is a turning spring 20 such as an unfolding spring between the cassette engaging member 15 and the pivoting end of the spring receptacle member 13.
A toggle mechanism includes the spring receptacle member 13, the cassette engaging member 15, and the turning spring 20.
Mounted under the pivoting member 8 is a engaging plate 21 pivotably formed with the common pivot pin 14 with the spring receptacle member 13.
The engaging plate 21 may selectively engage a contacting piece 22 located on the running line of the cassette engaging member 15 or a stading piece 23 of the main base plate 1 so that an engaging portion 24 allows the cassette holder 9 to be engaged in the cassette loading position.
A restoring spring 22a allows the engaging plate 21 to always direct toward an engaging direction of the engaging portion 24 with the standing piece 23 of the main base plate 1.
As shown in FIG 1, a cassette ejecting member 25 is mounted on the outer surface of the side plate of the main base plate 1 so as to become movable upward or downward. The cassette ejecting member 25 is connected to the spring receptacle member 13 through a connecting lever 26. The connection of the connecting lever 26 to the spring receptacle member 13 is made by inserting one end bent portion 28 of the connecting lever 26 into a long opening 27 provided in the spring receptacle member 13. There is provided a gap G roughly in the moving direction of the cassette ejecting member 25 between the long opening 27 and the one end bent portion 28 so that the spring receptacle member 13 can pivot by the gap G regardless of the connecting lever 26 (See FIG 4B and FIG 6B).
The cassette ejecting member 25 is always directed to the lower side in
FIG 1 by the returning spring (not shown). Where the cassette ejecting member 25 is in the returning position as shown in FIG 1, the spring receptacle member 13 pivots clockwise (returning direction). Where the cassette ejecting member 25 is pressed, the spring receptacle member 13 pivots counterclockwise (running direction) as shown in FIG 6A.
The operation of the apparatus will now be described. FIG 1 shows the state when the cassette is unloaded. In this state, the cassette holder 9 is in the cassette unloaded position and the cassette engaging member 15 moves a tape cassette ejecting direction through the long track 18 by a resilient force of the turning spring 20. While the spring receptacle member 13 is in the position pivoted clockwise because the cassette ejecting member 25 is in the returning position, it pivots counterclockwise by the gap G with respect to the connecting lever 26 due to the resilient force of the turning spring 20 so as to make a gap in the running side of the connecting lever 26.
As shown in FIG 2, where the tape cassette 12 is inserted into the cassette holder 9, firstly the projecting portion 17 of the cassette engaging member 15 is slidably contacted to the upper surface of the tape cassette 12 and then upwardly bent against its own resilient force. Where the tape cassette 12 is further pressed into the cassette holder 9 in the state of FIG 2, the projecting portion 17 is positioned with facing the reel hub space 12a of the tape cassette 12, returned downward by its own resilient force, and engaged with the reel hub space 12a (See FIG 3).
Subsequently, where the tape cassette 12 is further pressed into the cassette holder 9, it contacts and presses the contacting portion 16 of the cassette engaging member 15 positioned in the cassette insertion line so that the cassette engaging member 15 moves upward in FIG 1 with lessening the distance between the two ends of the turning spring 20. The distance between the two ends of the turning spring 20 becomes minimum when the straight line connecting both ends becomes vertical to the moving direction of the cassette engaging member 15, that is, when the turning spring 20 reaches the dead point.When the turning spring 20 just passes by the dead point which is a position shown in solid line in FIG 4A and shown in FIG 4B after the cassette engaging member 15 further moves upward, the spring receptacle member 13 becomes a clockwise rotatable state without engaging in the connecting lever 26 by the gap G so that the spring recepatcle member 13 pivots clockwise by the gap G due to the resilient force of the turning spring 20 and becomes a state shown in solid-dotted line in FIG 4A. In order words, when the turning spring 20 just passes by the dead point, it turns rapidly to the state as shown in solid-dotted line in FIG 4A. Subsequently the spring receptacle member 13 remains an unloaded state and then the turning spring 20 rapidly pivots counterclockwise in FIG 4A due to its own resilient force after turned so that the cassette engaging member 15 allows the tape cassette 12 to be rapidly moved to the predetermined position in the cassette holder 9.
Since the contacting portion of the cassette engaging member 15 contacts the contacting piece 22 of the engaging plate 21 so as to pivot the engaging plate 21 in non-biasing direction (counterclockwise in FIG 4A), the engaging portion 24 of the engaging plate 21 separates from the standing piece 23 of the main base plate 1 and the pivoting member 8 moves downwardly. The cassette holder 9 also moves downwardly to the operating position and then allows the tape cassette 12 to engage the reel shafts 2a and 2b and capstans 3a and 3b (See FIG 5).Where the motor 4 drives according to descending the cassette holder 9 to the operating position, one of reel shafts, for example, the reel shaft 2b and both capstans 3a and 3b start to rotate in predetermined direction At the same time, the head mounting plate 7 moves toward the tape cassette 12 so as to allow the magnetic head 5 to contact to the magnetic tape in the tape cassette 12.
The pinch roller 6b also contacts the capstan 3b through the magnetic tape so as to become recording or reproducing state.
In the cassette loaded state shown in FIG 5, the spring receptacle member 13 is pressed clockwise by the turning spring 20 so that the gap G is formed by the long opening 27 in the returning side of one end bent portion 28 of the connecting lever 26.
On the other hand, in case of removing the tape cassette 12 after finishing a recording or reproducing, it is sufficient to press the cassette ejecting member 25 in the direction of arrow in FIG 6A.
With pressing the cassette ejecting member 25, the connecting lever 26 moves upwardly in FIG 6, but the spring receptacle member 13 is not moved in the solid line position of FIG 6A (i.e. the state of FIG 6B) for the time when one end bent portion 28 of the connecting lever 26 moves in the long opening 27 of the spring receptacle member 13 just as much as the gap
G. Where the connecting lever 26 is further moved upwardly, the pivoting member 8 starts to pivot counterclockwise.
While the cassette holder 9 moves up to the cassette unloading position by pressing the cassette ejecting member 25, the spring receptacle member 13 is pressed by the connecting lever 26 to pivot counterclockwise in FIG 6a so that the end of the turning spring so position in the spring receptacle member 13 pivots clockwise on the basis of the end of the turning spring 20 positioned in the cassette engaging member 15 so as to close the two ends. With the existence of the gap G owing to the long opening 27 in the returning side of one end bent portion 28 of the connecting lever 26, the spring receptacle member 13 pivots freely without engaging in the connecting lever 26 although the turning spring 20 reaches the dead point.
Where the turning spring 20 just passes by the dead point, the spring receptacle member 13 receives the resilient force of the turning spring 20 from an unloaded state, and then rapidly pivots by the gap G so as to become a state shown in solid-dotted line in FIG 6A.
Therefore, the turning spring 20 rapidly gives a resilint force to the cassette engaging member 15 in the cassette ejecting direction. The cassette engaging member 15 moves rapidly through the long track 18 so that the tape cassette 12 is thrusted from the contacting portion 16 to the outside of the cassette holder 9 (See FIG 7). Where the user takes his hands off from the cassette ejecting member 25, the cassette ejecting member 25 returns by the biasing force of the returning spring so that the spring receptacle member 13 pivots clockwise according to the returning of the connecting lever 26 (See FIG 1).
It will be understood that the above description of the present invention is susceptible to various modification, changes, and adaptations, and the same are intended to be comprehended within the meaning and range of equivalents of the of the appended claim.
For example, while the long opening 27 to make the gap according to the present invention is formed on the side of the spring receptacle member 13 in the joint portion between the connecting lever 26 and the spring receptacle member 13, it is not limited to form the gap on the joint portion between the connecting lever 26 and the cassette ejecting member 25
Firstly, the long opening 27 to make the gap may be formed on the side of the connecting lever 26 in the joint portion between the connecting lever 26 and the spring receptacle member 13. It will be necessary in this case to mount a pin on the spring receptacle member 13.
Secondly, the long opening 27 to make the gap may be formed on either side of the connecting lever 26 or the cassette ejecting member 25 in their joint portion. It is also necessary to mount a pin on the cassette ejecting member 25 if the long opening 27 is formed on the connecting lever 26. It is sufficient to appropriately bend a front end of the connecting lever 26 if the long opening 27 is formed on the cassette ejecting member 25.
Thirdly, If the cassette ejecting member 25 is directly connected to the spring receptacle member 13 to delete the connecting lever 26, the long opening 27 may be formed on either the cassette ejecting member 25 or the spring receptacle member 13 and a pin may be mounted on the other one.
As described hereinbefore, since the cassette loading/unloading apparatus for the tape recorder according to the present invention enables the gap to be formed approximately in running direction of the cassette ejecting member on the joint portion between the cassette ejecting member and the spring receptacle member, it is not necessary to separately and additionally mount a conventional torsion spring. Additionally, it also enables to promote the turning operation of the turning spring in any direction of loading or unloading of the tape cassette, and to reduce the inserting force of the cassette by weakening the resilient force of the turning spring.
Claims (5)
1. A cassette loading/unloading apparatus for a tape recorder including a spring receptacle member pivotable on a pivoting member to support a cassette holder and a cassette engaging member reciprocally movable in the cassette loading/unloading direction, wherein, where a tape cassette is loaded into the cassette holder, movement of said cassette engaging member allows a turning spring positioned between said cassette engaging member and said spring receptacle member to be turned in the cassette inserting direction so that said tape cassette is inserted in said cassette holder by resilient force of said turning spring after turning; and where said tape cassette is unloaded from said cassette holder, a pivot of said spring receptacle member allows said turning spring to be turned in the cassette ejecting direction so that said tape cassette is ejected in the cassette ejecting direction by the resilient force of said turning spring after turning; a turning operation of said turning spring being promoted by a gap approximately in running direction of a cassette ejecting member on a joint portion between said cassette ejecting member and said spring receptacle member
2.A cassette loading/unloading apparatus for a tape recorder as claimed in Claim 1, wherein the cassette ejecting member is connected to the spring receptacle member through a connecting lever, and the gap is formed in approximately running direction of the cassette ejecting member on the joint portion between the connecting lever and the spring receptacle member.
3. A cassette loading/unloading apparatus for a tape recorder as claimed in Claim 1, wherein the cassette ejecting member is connected to the spring receptacle member through a connecting lever, and the gap is formed in approximately running direction of the cassette ejecting member on the joint portion between the connecting lever and the cassette ejecting member.
4. A cassette loading/unloading apparatus for a tape recorder as claimed in Claim 1, wherein an end of the cassette ejecting member is directly connected to the spring receptacle member, and the gap is formed in approximately running direction of the cassette ejecting member on either side of the cassette ejecting member or the spring receptacle member.
5. A cassette loading/unloading apparatus arranged and adapted to operate substantially as herein described with reference to and as shown in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2268099A JPH04146557A (en) | 1990-10-05 | 1990-10-05 | Cassette loading/unloading device for tape recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9109671D0 GB9109671D0 (en) | 1991-06-26 |
| GB2248515A true GB2248515A (en) | 1992-04-08 |
Family
ID=17453882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9109671A Withdrawn GB2248515A (en) | 1990-10-05 | 1991-05-03 | A cassette loading/unloading apparatus for a tape recorder |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH04146557A (en) |
| KR (1) | KR920008699A (en) |
| CN (1) | CN2087804U (en) |
| GB (1) | GB2248515A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69525220T2 (en) * | 1994-05-20 | 2002-08-29 | Sony Corp | RECORDING AND / OR PLAYING DEVICE WITH TAPE CASSETTE |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1213192A (en) * | 1967-03-14 | 1970-11-18 | Motorola Inc | Tape cartridge locking and ejector mechanism |
| GB1397972A (en) * | 1971-07-17 | 1975-06-18 | Blaupunkt Werke Gmbh | Magnetic tape machine |
-
1990
- 1990-10-05 JP JP2268099A patent/JPH04146557A/en active Pending
- 1990-10-23 KR KR1019900016993A patent/KR920008699A/en not_active Application Discontinuation
-
1991
- 1991-04-06 CN CN91205435U patent/CN2087804U/en not_active Withdrawn
- 1991-05-03 GB GB9109671A patent/GB2248515A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1213192A (en) * | 1967-03-14 | 1970-11-18 | Motorola Inc | Tape cartridge locking and ejector mechanism |
| GB1397972A (en) * | 1971-07-17 | 1975-06-18 | Blaupunkt Werke Gmbh | Magnetic tape machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN2087804U (en) | 1991-10-30 |
| JPH04146557A (en) | 1992-05-20 |
| GB9109671D0 (en) | 1991-06-26 |
| KR920008699A (en) | 1992-05-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |