GB2149187A - Magnetic recording and reproducing apparatus - Google Patents
Magnetic recording and reproducing apparatus Download PDFInfo
- Publication number
- GB2149187A GB2149187A GB08424092A GB8424092A GB2149187A GB 2149187 A GB2149187 A GB 2149187A GB 08424092 A GB08424092 A GB 08424092A GB 8424092 A GB8424092 A GB 8424092A GB 2149187 A GB2149187 A GB 2149187A
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- GB
- United Kingdom
- Prior art keywords
- cassette
- movable section
- tape
- loading
- magnetic
- 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.)
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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
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
-
- 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
- G11B15/60—Guiding record carrier
- G11B15/66—Threading; Loading; Automatic self-loading
- G11B15/665—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container
- G11B15/6653—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container to pull the record carrier against drum
- G11B15/6656—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container to pull the record carrier against drum using two-sided extraction, i.e. "M-type"
-
- 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
Landscapes
- Automatic Tape Cassette Changers (AREA)
- Feeding And Guiding Record Carriers (AREA)
Abstract
A magnetic recording and reproducing apparatus has a housing (1) with a movable section (2) including a cassette holder (4) for moving a magnetic tape cassette (5) between an operative position and an eject position, a magnetic head assembly (48) for carrying out the recording and reproducing operations on magnetic tape withdrawn from the operatively positioned cassette, and a tape loading mechanism for loading or unloading the magnetic tape on or from the magnetic head assembly. The movable section (2) is slidably movable in the horizontal direction between an open position where the movable section extends forwardly from the housing (1) and a closed position where the movable section is contained within the housing (1). The cassette holder (4) is held in the operative position when the movable section (2) is at the closed position within the housing. Further, the tape loading mechanism and the cassette holder (4) are operated in correspondence with the motion of the movable section (2). <IMAGE>
Description
SPECIFICATION
Magnetic recording and reproducing apparatus
This invention relates to magnetic recording and reproducing apparatus for recording or reproducing an audio signal, a video signal or other signal on a magnetic tape contained within a tape cassette.
A variety of magnetic recording and reproducing apparatuses, for recording and reproducing an audio signal, a video signal or the like, are available. In particular, several different types of video tape recorder (VTR) which use a tape cassette holding a magnetic tape are available. A first type employs a cassette loading system in which the cassette is inserted horizontally into the VTR through an opening provided in a front panel of a housing of the VTR, and only the cassette itself is moved horizontally and vertically within the housing to be positioned in a predetermined operative position.A second type of VTR employs a cassette loading system in which the cassette is inserted into a cassette holder which initially projects upwardly from an upper panel of the housing, and the cassette holder is then moved downwardly to position the tape cassette in the predetermined operative position. Both cassette loading systems have distinct disadvantages. In the first type, since the cassette is moved vertically within the housing, the housing is required to have a vertical dimension large enough to accommodate this motion, so that the VTR is increased in height. In the second type, since the cassette holder projects from the upper panel of the housing for receiving or ejecting a cassette, additional apparatus cannot be positioned on the upper panel of the housing.
To remove the above-mentioned shortcomings inherent in these types of magnetic recording and reproducing apparatus, there has been proposed a magnetic recording and reproducing apparatus of front loading, linear motion type in which a cassette mounting section is inserted into and drawn out from the front of the housing. However, in this proposed magnetic recording and reproducing apparatus, only a tape driving section and a mangetic head assembly are provided as parts of the cassette mounting section, so that this front loading type magnetic recording and reproducing apparatus cannot play a cassette having a lid at its front which has to be opened upon use. Neither can it play a tape cassette in which the magnetic tape has to be withdrawn from the tape cassette and loaded onto the magnetic head assembly upon use.
Further, this proposed front loading magnetic recording and reproducing apparatus does not have a cassette holder which moves the casette from an eject position to a tape drive or operative position. Finally, in the proposed magnetic recording and reproducing apparatus having a tape loading mechanism for loading the magnetic tape onto a magnetic head assembly, the operations of moving the cassette horizontally within the housing and loading the tape are carried out independently, so that the entire operation in which the cassette is inserted into the cassette holder and the magnetic tape undergoes a loading step to establish the recording or reproducing mode takes up a relatively long period of time.
In addition, in the proposed magnetic recording and reproducing apparatus having a cassette holder, it has been necessary separately to operate an eject button to move the cassette holder to an eject position out of the housing.
According to a first aspect of the present invention there is provided magnetic recording and reproducing apparatus, for recording or reproducing a signal on a magnetic tape contained in a tape cassette, the apparatus comprising:
a housing including a front panel having an opening formed therein; and a movable section movable substantially horizontally through the opening between an open position in which the movable section extends forwardly from the housing and a closed position in which the movable section is contained within the housing; the movable section including cassette mounting means for receiving a tape cassette and moving the received cassette relative to the movable section between an operative position and an eject position wherein the cassette may be removed from the apparatus, and a magnetic head assembly for recording or reproducing a signal on the tape of a cassette in the operative position; and the cassette mounting means holding the cassette in the operative position when the movable section is moved to the closed position.
According to a second aspect of the present invention there is provided magnetic recording and reproducing apparatus, for recording or reproducing a signal on a magnetic tape accommodated or contained in a tape cassette, comprising a housing including a front panel having an openina formed therein, and a movable section slidable between an open position in which the movable section extends forwardly from the housing through the opening and a closed position in which the movable section is contained within the housing; the movable section including cassette mounting means for receiving the cassette and moving the received cassette between an operative position wherein the apparatus may record or reproduce the signal and an eject position wherein the cassette may be removed from the apparatus with the movable section in its open position, and further including a magnetic head assembly upon which the magnetic tape is loaded from the operatively positioned cassette; and wherein, when the cassette mounting means holds the cassette in the operative position, the movable section may be moved to the closed position.
The invention will now be further described, by way of illustrative and non-limiting example, with reference to the accompanying drawings, in which like references designate like elements throughout, and in which:
Figure 1 is a perspective view of a magnetic recording and reproducing apparatus embodying the present invention;
Figure 2 is a top plan view of drive and tape loading mechanisms of the apparatus of
Fig. 1, with a movable section being illustrated in an open position thereof;
Figure 3 is a top plan view similar to that of
Fig. 2, but illustrating the movable section in a closed position thereof;
Figure 4 is an enlarged cross-sectional view taken along line A-A in Fig. 2;
Figure 5 is an enlarged cross-sectional view taken along line B-B in Fig. 3;;
Figure 6 is a top plan view illustrating a cassette mounting mechanism, a lock mechanism and a tape loading mechanism of the movable section;
Figure 7 is a view similar to Fig. 4, but showing only the lock mechanism with other elements removed;
Figure 8 is a view similar to Fig. 5, but showing only the lock mechanism with other elements removed;
Figure 9 is a perspective view illustrating a magnetic head assembly and the tape loading mechanism included in the apparatus of Figs.
1 to 6; Figure 10 is a perspective view illustrating loading rings and loading blocks included in the tape loading mechanism; and
Figure 11 is a top plan view of a second magnetic recording and reproducing apparatus embodying the present invention.
Referring to the drawings, and initially to
Fig. 1 thereof, a first magnetic recording and reproducing apparatus embodying the present invention will now be described in detail.
The illustrated magnetic recording and reproducing apparatus has a housing 1 with a front panel 1a bearing operational switches and the like. A movable section 2 is movable through an opening 1 b formed in the panel 1 a. As will be described below in detail, the movable section 2 includes a cassette mounting mechanism for receiving a magnetic tape cassette 5 when the movable section 2 is at an open position illustrated in Fig. 1, a magnetic head assembly and a tape loading mechanism for withdrawing the magnetic tape from the cassette and loading the tape onto the magnetic head assembly section or unloading the same therefrom. In the illustrated open position of the movable section 2, a front panel 2a thereof extends forwardly beyond the housing panel 1a by a predetermined amount.The movable section 2 can be moved in the horizontal direction into the housing 1 to a closed position in which its front panel 2a is substantially flush with the housing panel 1a. An open/close button 3 is provided on front panel 2a for causing the movable section 2 to move between the open and closed positions.
A cassette holder 4 located on the movable section 2 forms a portion of the cassette mounting mechanism. The tape cassette 5 may be inserted into the cassette holder 4 through a cassette insertion opening 4a when the holder 4 is in a cassette-receiving and ejecting position as shown in Fig. 1. In the embodiment illustrated, the cassette 5 is of a type having a pivoted lid 5' at the front of the cassette for protecting the magnetic tape inside the cassette 5 when the cassette is not in use.
A drive mechanism for sliding the movable section 2 relative to the housing 1 will now be described with reference to Figs. 2 and 3.
Parallel racks 6a. 6b and rollers 7a. 7b are provided on the housing 1 adjacent opposed sides of the movable section 2. A drive motor 8 is located on the movable section 2 at one side near its rear. Pinions 9a. 9b on a shaft 9d (illustrated in dashed lines in Figs. 2 and 3) engage the racks 6a, 6b respectively, and a gear 9c is fixed to the shaft 9d, which is suitably journalled in the movable section 2.
The pinions 9a, 9b are driven by the drive motor 8 to move the movable section 2 relative to the housing 1. Specifically, a motor pulley 8a attached to a rotary shaft 8b of the drive motor 8 is coupled through a belt 10 to a pulley 1 1 b which has a shaft coupled to a gear 11 a. The gear 11 a meshes with the gear 9c. Open position and closed position detecting switches 1 2a and 1 2b, respectively, are located near the rack 6b to be actuated by the pinion 9b when the movable section 2 is at its open position and closed position, respectively. A pair of rails 1 3a, 1 3b, provided on the movable section 2 along the opposed sides thereof, engage support rollers 7a, 7b, respectively.
When it is desired to move the movable section 2 to its closed position, that is, when a closing operation mode is selected by actuation of the open/close button 3, and at a time after the cassette has been fully mounted or operatively positioned, as detected by a tape cassette mounting end detecting switch, which will be described later, the drive motor 8 is rotated in a predetermined or "positive" direction to move the movable section 2 to the closed position. When the movable section 2 is in its closed position, the pinion 9b contacts the closed position detecting switch 1 2b, thereby to detect that fact, and the drive
motor 8 stops in response thereto.Conversely, when the opening operation mode is selected by actuation of the open/close button 3 to move the movable section 2 to its open position, and at a time when the mag
netic recording and reproducing apparatus is
in a stop mode, as detected by a rotary encoder to be described below, the drive
motor 8 is rotated in the reverse direction to
move the movable section 2 to its open position. When the movable section 2 is in its
open position, the pinion 9b contacts the open position detecting switch 1 2a and the
drive motor 8 stops in response thereto.
The cassette mounting mechanism of the
movable section 2 will now be described with reference to Figs. 4, 5 and 6. A base plate 14
of the movable section 2 has two pairs of opposing side plates 1 spa, 1 sub, and 1 6a,
1 6b, respectively, (Fig. 6) that extend upwardly therefrom. A pair of elevating arms
1 7a, 1 7b that are approximately L-shaped are pivotally mounted at first ends 1 7a', 1 7b' thereof on the interior sides of the side plates
1 Sa, 1 5b near the front panel 2a by support shafts 1 8a, 1 8b, respectively. The cassette holder 4 is pivotally mounted by support shafts 1 9a, 1 9b on second ends 1 7a", 1 7b" of the elevating arms 1 7a, 1 7b which are in the form of bent portions.As the elevating arms 1 7a, 1 7b pivot, their second ends
1 7a", 1 7b" move up and down relative to the base plate 14 so that the cassette holder 4 is moved upwardly and downwardly between a lower cassette mounting or operative position, near the base plate 14, and an upper cassette inserting or ejecting insertion position. A coil spring 20 is stretched between the second end 1 7a" and the cassette holder 4 so that, when the cassette holder 4 is at the cassette inserting position, the spring 20 inclines the cassette holder 4 so that its opening 4a facing the front panel 2a is inclined upwardly, thus facilitating insertion of the cassette 5 (Fig. 4). On the other hand, in the cassette mounting or operative position, the cassette holder 4 and the cassette 5 inserted therein are held parallel to the base plate 14 (Fig. 5).
A A mounting detection operating pin 21 provided on the cassete holder 4 passes through a guide groove 22 in the side plate 1 spa. The guide groove 22 is substantially arcuate and extends over a range corresponding to a desired movable range of the mounting detection operating pin 21. A cassette mounting completion detecting switch 23, which may, for example, be a leaf switch, is provided on the side plate 1 5a near the lower end of the guide groove 22. When the cassette holder 4 is in the cassette mounting or operative position, the cassette mounting completion detecting switch 23 is actuated by the mounting detection operating pin 21 to indicate that the mounting or operative positioning of cassette 5 has been attained.
A pair of spring anchor pins 24a, 24b are provided on the elevating arms 17a and 17b, respectively, near the support shafts 18a,
18b, and a pair of spring anchor pins 25a, 25b are provided on the side plates 15a and 15b, respectively, at approximately upper middle locations. Coil springs 26a, 26b are stretched betwen the pins 24a, 25a and the pins 24b, 25b, respectively, to bias the second ends 17a", 17b" of the elevating arms
17a, 17b upwardly from the base plate 14, that is normally to bias the cassette holder 4 towards the cassette inserting and ejecting position.
Respective lock pins 27a, 27b are provided on the second ends 17a", 1 7b" to face the side plates 15a, 15b. When the elevating arms 17a, 17b are lowered towards the base plate 14 against the biasing force of the coil springs 26a, 26b and the cassette holder 4 is thereby moved to the cassette mounting or operative position (Fig. 5), the lock pins 27a, 27b are engaged by a lock mechanism, described in detail below, to lock the elevating arms 17a, 17b with the cassette holder 4 at the cassette mounting position.
A lid engaging pin 28 is provided on the inner surface of the side plate 15b to engage the lid 5' of the cassette 5 to open it as the cassette 5 is moved to the tape cassette mounting or operative position. An arcuate or sector gear 29 is formed on the peripheral edge portion of the first end 17a' of the elevating arm 17a, with the support shaft 1 8a as its axis. The sector gear 29 meshes with a so-called shock-absorbing gear 29a mounted on the side plate 15a for rotation against a damping or frictional resistance so that the elevating arms 17a and 17b are moved up and down slowly and softly.
The lock mechanism for the lock pins 27a, 27b will now be described with particular reference to Figs. 7 and 8, in which, for the sake of clarity, only the elements of Figs. 4 to 6 relating to the lock mechanism are illustrated. Lock levers 30a, 30b are provided, in association with the lock pins 27a, 27b, on the side plates 15a, 15b adjacent the elevating arms 17a, 17b. The lock levers 30a, 30b are provided with respective lock members or noses 31 a, 31 b which engage the lock pins 27a, 27b from the front when the cassette holder 4 is moved to the cassette mounting position. The lock levers 30a, 30b are pivotally attached by support shafts 32a, 32b to the side plates 15a, 15b at points lower than the noses 31 a, 31 b.By virtue of this, as the lock levers 30a, 30b pivot, the noses 31a, 31 b are moved out of range of the lock pins 27a, 27b. Upper edge portions 31a', 31b' of the noses 31a, 31b are inclined towards the front panel 2a, so that the lock levers 30a, 30b are pivoted in a direction moving the noses 31 a, 31 b outside of the range of the lock pins 27a, 27b in response to downward movement of the elevating arms 17a, 17b for operatively positioning a cassette. Anchor pins 33a, 33b are provided on the lock levers 30a, 30b at positions closer to the front panel 2a than the support shafts 32a, 32b. Pins 34a, 34b are provided on the side plates 15a, 15b. Coil springs 35a, 35b are stretched between the pins 33a, 33b and pins 34a.
34b, whereby the lock levers 30a, 30b are biased so that the noses 31 a, 31 b will engage the lock pins 27a, 27b when the cassette holder 4 is in the tape cassette mounting or operative position.
L-shaped operation levers 36a, 36b are pivotally attached to the side plates 15a, 15b adjacent the lock levers 30a, 30b, respectively. Central portions of the operation levers 36a, 36b are pivotally supported by support shafts 37a, 37b on the side plates 15a, 15b, and first ends 36a', 36b' of the operation levers 36a, 36b are engageable with the pins 33a, 33b. L-shaped transmission levers 38a, 38b are pivotally supported at central portions thereof by support shafts 39a, 39b to the side plates 16a, 16b. Second ends 36a", 36b" of the operation levers 36a, 36b are coupled by wires or rods 40a, 40b, respectively, to first ends 38a', 38b' of the transmission levers 38a, 38b. Rollers 41a, 41b are rotatably mounted on second ends 38a". 38b" of the transmission levers 38a, 38b.
V-shaped releasing levers 42a, 42b are pivotally supported at central portions thereof by support shafts 43a, 43b to the side plates 16a, 16b. Coil springs 44a, 44b are stretched between the support shafts 43a, 43b and the second ends 38a", 38b" of the transmission levers 38a, 38b so that, in the cassette mounting or operative position (Fig. 8), the axes of the rollers 41 a, 41 b of the transmission levers 38a, 38b are positioned along imaginary straight lines connecting the axes of the support shafts 43a, 43b of the releasing levers 42a, 42b and the axes of the support shafts 39a, 39b of the transmission levers 38a, 38b.Torsion springs 45a, 45b have respective coil portions mounted on the support shafts 43a, 43b with first ends bearing against the releasing levers 42a, 42b, respectively, and second ends engaged with an abutment 14a on the base plate 14 for urging the levers 42a, 42b to the position shown in
Fig. 8 and in which the rollers 41a, 41b of the transmission levers 38a, 38b are located between first ends 46a, 46b and second ends 47a, 47b of the releasing levers 42a, 42b.
A protruding member 1 c is provided inside the upper surface of the housing 1 near the opening 1 b in the panel 1 a. As the movable section 2 is moved from its closed position to an intermediate position near its open position (Figs. 4 and 7), the protruding member 1c contacts the upper or first ends 46a, 46b of the releasing levers 42a, 42b. Thus, as the movable section 2 is moved to the intemediate position, the releasing levers 42a, 42b are rotated clockwise (as viewed in Figs. 4 to 8) by the protruding member 1c against the biasing force of the torsion springs 45a, 45b.
The second ends 47a, 47b of the levers 42a.
42b then cause the transmission levers 38a, 38b to turn anticlockwise. The wires 40a, 40b are therefore pulled to the right and the operation levers 36a, 36b turn anticlockwise, releasing the lock pins 27a. 27b from engagement by the noses 31 a, 31 b so that the springs 26a, 26b can elevate the arms 17a.
17b and thereby position the holder 4 at its cassette inserting and ejecting position (Figs.
4 and 7).
Conversely, as the movable section 2 moves from the open position towards the closed position of Figs. 5 and 8. the releasing levers 42a, 42b are released by the protruding member 1c, so that they and the transmission levers 38a, 38b are turned by the biasing forces of the torsion springs 45a, 45b and coil springs 44a. 44b. Further, by virtue of the biasing forces of the coil springs 35a.
35b, the lock levers 30a, 30b are turned to their original positions so that the noses 31a.
31b engage the lock pins 27a, 27b when the holder 4 attains its operative position.
The magnetic head assembly for recording or playback and the tape loading mechanism for loading the magnetic tape onto the magnetic head assembly and unloading the tape therefrom will now be described with reference to Figs. 2, 3. 6, 9 and 10.
As can most clearly be seen in Fig. 9, a rotary magnetic head assembly 48 is provided at a predetermined position on the base plate 14. The rotary magnetic head assembly 48 includes a stationary lower drum 48a which is fixed to the base plate 14 at a predetermined inclination and a rotary upper drum 48b which is mounted on the fixed drum 48a and freely rotatable with respect thereto. One or more magnetic transducer heads (not illustrated) is or are fixed to the rotary drum 48b at a surface opposing the fixed drum 48a. An erase head 49 is located on the base plate 14 near one side of the rotary magnetic head assembly 48.
A pair of tape loading blocks 50a, 50b have generally V-shaped guide bases 51 a, 51b which are movable on the base plate 14.
Return guides 52a, 52b are provided on central portions of the guide bases Sla, 51b, and inclined guides 53a, 53b are mounted on first end portions thereof. Links 56a, 56b (Fig. 10) havin elongate slits 54a, 54b are positioned at the underside at the base plate 14 and are rotatably attached by pins 55a, 55b to the under surfaces of the guide bases Sla, 51 b at second end portions of the latter.
Guide grooves 57a, 57b (Fig. 9) extend through the base plate 14 over a range from the cassette mounting or operative position to opposite sides of the rotary magnetic head assembly 48. The pins 55a, 55b (Fig. 10) extend through guide grooves 57a, 57b and, in responses to turning of loading rings described below, the pins 55a, 55b are moved along the guide grooves 57a, 57b to correspondingly move the loading blocks 50a, 50b, as shown in Fig. 6, between the unloaded position shown by solid lines and the loading position shown by dot-dash lines.
Position defining blocks 58a, 58b, having substantially V-shaped grooves 59a, 59b for establishing the loading positions of the loading blocks 50a, 50b, respectively, are provided on the base plate 14 at the ends of the guide grooves 57a and 57b near the rotary magnetic head assembly 48. The return guides 52a, 52b engage in the grooves 59a, 59b of the blocks 58a, 58b in the loading position.
As illustrated in Fig. 2, a reversible loading motor 60 is fixed to the base plate 14 at a predetermined position. A motor pulley 60a is attached to a rotary shaft of the loading motor 60 and is coupled by a belt 61 to a pulley 62b on a shaft to which a worm 62a is also fixed. The worm 63a meshes with a worm wheel 63 (Fig. 10) rotatably supported by a shaft 63a on the base plate 14. Two gears 64a, 64b are also attached to the shaft 63a.
The gear 64a meshes with a rack formed on the periphery of a first loading ring 65a, while the gear 64b meshes through an idle gear 66 with a rack formed on the periphery of a second loading ring 65b. The first and second loading rings 65a, 65b are rotatably located beneath the base plate 14 so as to extend around the rotary head assembly 48. First and second actuating pins 66a and 66b are provided on the first and second loading rings 65a, 65b, respectively, at predetermined positions to respectively engage in the elongate slits 54a, 54b of the links 56a, 56b connected to the loading blocks 50a, 50b. When the loading motor 60 is rotated in a first or forward direction, the loading blocks 50a, 50b are moved by the first and second loading rings 65a, 65b to the loading positions.
When the motor 60 is operated in the reverse direction, the corresponding rotational movements of the rings 65a, 65b return the blocks 50a, 50b to their unloaded positions.
A rotary encoder 67 (Fig. 2) meshes with one of the racks on the rings 65a, 65b and may have alternate black and white patterns equally spaced around its circumference.
Thus, when the direction and the number of the patterns moved in accordance with the rotation of the loading ring 65a or 65b are read by a photo coupler (not illustrated), formed of a light emitting diode, a photo diode and so on, the mode of the magnetic recording and reproducing apparatus and the position of the loading blocks 50a, 50b may be detected.
When the drive motor 8 is rotated in the positive or forward direction so as to move the movable section 2 from its open to its closed position with the holder 4 in its operative or cassette mounting position, the loading motor 60 may be rotated simultaneously in response thereto in the positive direction, so that, as the movable section 2 is moved to its closed position, the loading blocks 50a, 50b also are moved to their loading positions. Then, when the rotary encoder 67 detects that the loading blocks 50a, 50b are in the loading positions, the operation of the loading motor 60 is stopped. The loading motor 60 may be caused to rotate in the positive direction in response to positive rotation of the drive motor 8 or in response to corresponding motion of the movable section 2 detector by the photocoupler.
Conversely, when the loading motor 60 is rotated in the reverse direction, the loading blocks 50a, 50b are moved by the first and second loading rings 65a, 65b to the unloaded positions. Again, when the drive motor 8 is rotated in the reverse direction so as to move the movable section 2 from its closed to its open position, the loading motor 60 may be rotated simultaneously in the reverse direction in response thereto so that, while the movable section 2 is moved to the position at which the second ends 46a, 46b of the releasing levers 42a, 42b contact the protruding member 1 c of the housing 1, the loading blocks 50a, 50b are moved to the unloaded position.Then, when the rotary encoder 67 detects that the loading blocks 50a, 50b are in the unloaded positions, the reverse operation of the loading motor 60 is stopped. The loading motor 60 may be rotated in the reverse direction in response to reverse rotation of the drive motor 8 or in response to corresponding motion of the movable section 2 detected by the photocoupler. Alternatively, the loading motor 60 may be responsive to the operation of the open/close button 3 on the magnetic recording and reproducing apparatus.
The tape loading mechanism further includes a capstan 68, and a pinch roller 69 which is in contact with or spaced apart from the capstan 68 in the loading mode or the unloading mode, respectively. A pair of reel shafts 70a, 70b are provided at the cassette mounting or operative position, and positioning pins 71a, 71b and height restricting pins 72a, 72b respectively determine the position and height of the cassette 5 at the cassette mounting or operative position. Of course, a conventional signal processing system also may be provided for the magnetic head assembly and other portions of the magnetic recording and reproducing apparatus may be provided as in known such apparatus.
The operation of the magnetic recording and reproducing apparatus set forth above will now be described.
As illustrated in Figs. 1 and 2, the cassette 5 is inserted into the cassette holder 4 held at the cassette insertion postion while the movable section 2 is at its open position outside of the housing 1. Then, the cassette holder 4 is manually moved down against the biasing force of the coil springs 20, 26a and 26b, so that the elevating arms 17a, 17b are pivoted downwardly for moving the cassette 5 in the holder 4 to the operative position, and the lid 5' of the cassette 5 is opened by the lid engaging pin 28 in the course of such movement of the cassette to its operative position.
In this position, the lock pins 27a, 27b of the elevating arms 17a, 17b are engaged with the noses 31a, 31 b of the lock levers 30a, 30b, so that the elevating arms 17a, 17b are locked to hold the cassette holder 4 at the cassette mounting or operative position. At the same time, the cassette mounting completion detecting switch 23 is actuated by the mounting detection operating pin 21 to indicate the end of the mounting or operative positioning of the cassette 5.
When the cassette 5 is in its operative position with its lid 5' opened to expose a run of the tape extending across an opening of the cassette housing, the return guides 52a, 52b and the inclined guides 53a, 53b project upwardly into the cassette housing at the inside of the tape run.
When the closing operation mode is then selected by actuation of the open/close button 3, the drive motor 8 is rotated in the positive or forward direction, and the rotational force of the drive motor 8 is transmitted through the motor pulley 8a, belt 10, pulley 11 b, gear 11 a, and gear 9c to the pinions 9a, 9b, so that the movable section 2 is moved along the racks 6a, 6b to the closed position within the housing 1. At the same time, the loading motor 60 is rotated in the positive or forward direction, and the rotational force of the loading motor 60 is transmitted through the motor pulley 60a, belt 61, pulley 62b, worm 62a, worm wheel 63, gears 64a 64b, and idle gear 66 to the first and second loading rings 65a, 65b.By virtue of this, the first and second loading rings 65a, 65b are rotated in opposed directions so that the loading blocks 50a, 50b are moved along the guide grooves 57a, 57b to their loading positions from the unloaded positions, thereby withdrawing the magnetic tape from the cassette 5 and loading or wrapping the withdrawn tape about the drums 48a, 48b of the magnetic head assembly section. The tape loading operation is completed before completion of the closing operation of the movable section 2, and the end of the loading operation is detected by the rotary encoder 67 to stop the loading motor 60.Thereafter, when the closing operation of the movable section 2 is completed, as shown in Fig. 3, the end of the closing operation is detected by contact of the pinion 9b and the closed position detecting swtich 12b to stop the drive motor 8. At this point, the magnetic recording and reproducing apparatus is placed in the stop mode and is now conditioned to be changed-over to the recording or reproducing modes immediately. Thus, the successive operations by which the cassette 5 is inserted and the recording or reproducing mode is established are effected in a relatively short time.
Next, the successive operations by which the cassette 5 is ejected from the housing 1.
as shown in Fig. 4, will be described. When the magnetic recording and reproducing appa- ratus is in the stop mode and the opening operation mode is selected by suitable actuation of the open/close button 3. the drive motor 8 and loading motor 60 are both rotated in their reverse directions. due to this reverse rotation, the movable section 2 is moved to its open position and the loading blocks 50a, 50b are moved to their unloaded positions (Fig. 2). In the tape unloading operation, one or both of the reel shafts 70a. 70b is or are suitably rotated to draw the magnetic tape completely into the cassette 5.The unloading operation is completed before the movable section 2 attains the intermediate position at which the first ends 46a, 46b of the releasing levers 42a, 42b initially contact the protruding member 1 c of the housing 1, and the end of the tape unloading operation is detected by the rotary encoder 67, and the loading motor 60 is stopped. As shown in
Figs. 4 and 7, when the movable 2 is moved forwardly to and beyond the intermediate position, the lock pins 27a, 27b are released.
That is, by the action of the protruding member 1 c, the releasing levers 42a, 42b are turned against the biasing force of the torsion springs 45a, 45b, and the second ends 47a, 47b of the releasing levers 42a, 42b cause turning of the lock levers 30a, 30b by the action of the transmission levers 38a, 38b, wires 40a, 40b, and operation levers 36a, 36b, thereby releasing the lock pins 27a, 27b from engagement by the noses 31a, 31b.
Then, the biasing forces of the coil springs 26a, 26b rock the elevating arms 17a, 17b upwardly, and the biasing force of the coil spring 20 places the cassette holder 4 at the cassette inserting and ejecting position extending above the movable section 1. Thereafter, as shown in Figs. 1 and 2, when the movement of the movable section 2 to the open position is completed, the end of the opening operation is detected by contact of the pinion 9b with the open position detecting switch 12a and the drive motor 8 is stopped.
Fig. 11 illustrates another magnetic recording and reproducing apparatus embodying the present invention In Fig. 11, parts corresponding to those described with reference to
Figs. 1 to 10 are designated by the same references and will not be described again in detail.
The embodiment of Fig. 11 differs substantially from that of Figs. 1-10 only in that a different drive source is provided for the moving and loading operations. More particularly, a common motor 73 mounted on the lower side of the base plate 14 is employed for powering the movements of the movable section 2 into and out of the housing 1, and for powering the tape loading and unloading operations. For the foregoing purpose, motor pulleys 8a, 60a are both mounted on the rotary shaft of the motor 73 and all other elements are similar to those in the first embodiment of the invention described above.
Accordingly, when the closing operation mode is selected by actuation of the open/close button 3 and the arrival of the holder 4 and a cassette 5 therein at the operative position is detected by the cassette mounting completion detection switch 23, the common motor 73 is rotated in the positive direction to move the movable section 2 to the closed position, and to effect loading of the magnetic tape onto the magnetic head assembly by the loading mechanisms 50a, 50b to 70a, 70b. When the opening operation mode is selected by actuation of the open/close button 3 with the apparatus in its stop mode, as detected by the rotary encoder 67, the motor 73 is rotated in the reverse direction to move the movable section 2 to its open position, and to unload the magnetic tape from the magnetic head assembly by the tape loading mechanisms 50a, 50b to 70a, 70b.
Thus, it will readily be understood that the embodiment shown in Fig. 11 achieves the same actions and effects as the embodiment shown in Figs. 1 to 10.
Although, in the above-described embodiments, the engagement and release of the lock pins 27a, 27b with the noses 31a, 31b is performed mechanically by the action of the protruding member 1 c on the releasing levers 42a, 42b this engagement and release may be controlled electrically by a detector (such as the rotary encoder 67 and a photocoupler) which detects the position of the movable section 2 and suitably controls operation of a solenoid (not shown) for actuating the lock levers 30a, 30b.
It will be appreciated that, in the apparatus described above, since the movable section 2 is moved horizontally into and out of the front of the housing 1, there is no need for a space within the housing large enough to move the tape cassette in the vertical direction. That is, vertical movements of the cassette holder 4 are effected with the section 2 withdrawn forwardly from the housing 1. As a result, the apparatus may be decreased in height. Additionally, the above-described apparatus can be stacked with other apparatus or components, that is, other apparatus can be mounted on the upper panel of the housing 1, because nothing extends upwardly therefrom.
Further, since the cassette holder 4 is provided in the movable section 2 and is moved relative to the latter between the cassette insertion and eject position, and the operative position, and the lid of the tape cassette can be opened and closed in association with the movements of the cassette holder, the abovedescribed magnetic recording and reproducing apparatus can operate with a tape cassette having a lid.
Furthermore, since the movable section 2 has the tape loading mechanism provided thereon, the above-described magnetic record- ing and reproducing apparatus can operate with a tape cassette of the type in which the tape is withdrawn from the cassette housing for recording and reproducing operations.
Moreover, since the tape loading mechanism is operated in association with the sliding operation of the movable section, the successive operations in which the tape cassette is inserted into the cassette holder and the magnetic tape is loaded to enable the apparatus to enter the recording or reproducing mode can be carried out in a relatively short time.
Finally, since the cassette holder 4 is moved automatically to the eject position in association with the sliding operation of the movable section 2 to its open position, the tape cassette can be removed without the further or independent operation of an eject button, so that such an eject button is not necessary.
Claims (10)
1. Magnetic recording and reproducing apparatus, for recording or reproducing a signal in a magnetic tape contained in a tape cassette, the apparatus comprising:
a housing including a front panel having an opening formed therein; and
a movable section movable substantially horizontally through the opening between an open position in which the movable section extends forwardly from the housing and a closed position in which the movable section is contained within the housing;
the movable section including cassette mounting means for receiving a tape cassette and moving the rpceived cassette relative to the movable section between an operative position and an eject position wherein the cassette may be removed from the apparatus, and a magnetic head assembly for recording or reproducing a signal on the tape of a cassette in the operative position;;
and the cassette mounting means holding the cassette in the operative position when the movable section is moved to the closed position.
2. Apparatus according to claim 1, wherein the cassette mounting means includes cassette holding means for receiving the cassette, the cassette mounting means being operative to move the cassette holding means relative to the movable section between the operative and eject positions.
3. Apparatus according to claim 2, for use with a tape cassette which has an opening through which the magnetic tape may be withdrawn to be loaded on the magnetic head assembly and a lid closing the opening when the cassette is not in use, the apparatus including lid opening and closing means for opening and closing the lid in correspondence with the movement of the cassette holding means.
4. Apparatus according to claim 2 or claim 3, including an automatic eject means for moving the cassette holding means from the operative position to the eject position in correspondence with the movement of the movable section from the closed position to the open position.
5. Apparatus according to claim 4, wherein the automatic eject means includes bias means for normally biasing the cassette holding means into the eject position, lock means for locking the cassette holder in the operative position against the biasing action of the bias means, and lock releasing means for releasing the lock means in accordance with the movement of the movable section from the closed position to the open position.
6. Apparatus according to any one of the preceding claims, wherein the movable section includes tape loading means for loading the magnetic tape from the tape cassette in the operative position onto the magnetic head assembly and for unloading the magnetic tape from the magnetic head assembly to the tape cassette.
7. Apparatus according to claim 6, so arranged that the movable section is moved from the open position to the closed position during a first period, the tape loading means accomplishes the loading of the magnetic tape entirely within the first period, the movable section is moved from the closed position to the open position during a second period, and the tape loading means accomplishes the unloading of the magnetic tape entirely within the second period.
8. Apparatus according to claim 6, comprising first drive means for driving the movable section, second drive means for driving the tape loading means, and operation switch means for actuating the first drive means, the second drive means being actuated in response to at least a selected one of the operations of the first drive means, the movable section and the operation switch means.
9. Apparatus according to claim 8, including detector means for detecting the state and position of the tape loading means, and wherein, in use, operation of the second drive means is initiated and stopped in accordance with the detected state and position.
10. Magnetic recording and reproducing apparatus substantially as herein described with reference to Figs. 1 to 10 or Fig. 11 of the accompanying drawings.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14668883U JPS6056949U (en) | 1983-09-24 | 1983-09-24 | Recording/playback device |
| JP14669083U JPS6056945U (en) | 1983-09-24 | 1983-09-24 | Recording/playback device |
| JP59170926A JPS6150242A (en) | 1984-08-16 | 1984-08-16 | Magnetic recording and reproducing device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8424092D0 GB8424092D0 (en) | 1984-10-31 |
| GB2149187A true GB2149187A (en) | 1985-06-05 |
| GB2149187B GB2149187B (en) | 1986-12-03 |
Family
ID=27319221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08424092A Expired GB2149187B (en) | 1983-09-24 | 1984-09-24 | Magnetic recording and reproducing apparatus |
Country Status (8)
| Country | Link |
|---|---|
| KR (1) | KR920002759B1 (en) |
| AT (1) | AT393176B (en) |
| CH (1) | CH666571A5 (en) |
| DE (1) | DE3435006A1 (en) |
| FR (1) | FR2552577B1 (en) |
| GB (1) | GB2149187B (en) |
| NL (1) | NL8402913A (en) |
| SE (1) | SE454474B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0177133A1 (en) * | 1984-09-29 | 1986-04-09 | Sony Corporation | Video tape recorders |
| EP0204585A1 (en) * | 1985-06-07 | 1986-12-10 | Sony Corporation | Magnetic tape cassette loading system in recording and/or reproducing apparatus |
| GB2200239A (en) * | 1987-01-21 | 1988-07-27 | Sony Corp | Cassette loading mechanism |
| GB2219427A (en) * | 1988-05-04 | 1989-12-06 | M4 Data Ltd | Tape drive machines |
| EP0391036A1 (en) * | 1989-02-10 | 1990-10-10 | Sony Corporation | Loading mechanism for a recording/reproducing apparatus |
| DE4119304A1 (en) * | 1991-06-12 | 1992-12-17 | Erkelenz Thomas | Road network information display system for motor vehicle - uses data entered on some form of storage medium processed to provide display on VDU screen |
| GB2378807A (en) * | 2001-06-12 | 2003-02-19 | Inc Technologies | Drawer support mechanism for electrical device. |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH071579B2 (en) * | 1984-05-30 | 1995-01-11 | ソニー株式会社 | Magnetic recording / reproducing device |
| DE3511848A1 (en) * | 1985-03-30 | 1986-10-09 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth | DEVICE FOR GUIDING A MAGNETIC TAPE IN A VIDEO MAGNETIC TAPE DEVICE |
| DE3519020A1 (en) * | 1985-05-25 | 1986-11-27 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth | DEVICE FOR DRIVING A CASSETTE PULL-IN MECHANISM AND A TAPE FEEDING MECHANISM IN A VIDEO RECORDER WITH MAGNETIC TAPE CASSETTE |
| JPH0792958B2 (en) * | 1985-05-27 | 1995-10-09 | ソニー株式会社 | Cassette type recording / reproducing device |
| EP0203784B1 (en) * | 1985-05-27 | 1991-05-29 | Sony Corporation | Apparatus for loading a record medium cassette |
| JP2531171B2 (en) * | 1987-03-26 | 1996-09-04 | ソニー株式会社 | Magnetic recording / reproducing device |
| KR910010165B1 (en) * | 1987-05-13 | 1991-12-17 | 마쯔시다덴기산교 가부시기가이샤 | Magnetic recording/reproducing apparatus |
| US5327306A (en) * | 1990-03-30 | 1994-07-05 | Sony Corporation | Compact magnetic recording and reproducing device having movable reels and reel spindles |
| DE4319863C2 (en) * | 1992-06-17 | 2001-03-29 | Gold Star Co | Tape running system for magnetic recording and playback devices |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL100514C (en) * | 1957-03-05 | |||
| US3661344A (en) * | 1969-05-24 | 1972-05-09 | Matsushita Electric Industrial Co Ltd | Magnetic recording and reproducing device |
| JPS5087010A (en) * | 1973-11-30 | 1975-07-12 | ||
| BE822012A (en) * | 1974-11-08 | 1975-05-09 | Cassette recorder with sliding cassette receiving drawer - has locking means retaining drawer in closed position | |
| US4071859A (en) * | 1975-08-19 | 1978-01-31 | Sanyo Electric Co., Ltd. | Tape cartridge positioning and ejection device |
| GB1578397A (en) * | 1976-07-02 | 1980-11-05 | Nihon Technical Kk | Cassette tape player |
| US4202021A (en) * | 1977-06-30 | 1980-05-06 | Pioneer Electronic Corporation | Front-loaded cassette tape deck |
| DE2822584A1 (en) * | 1978-05-24 | 1979-11-29 | Braun Ag | TAPE CASSETTE DEVICE WITH FRONT PANEL OPERATION |
| JPS6037725Y2 (en) * | 1978-12-28 | 1985-11-11 | クラリオン株式会社 | Auto loading device for tape player |
| JPS5680844A (en) * | 1979-12-07 | 1981-07-02 | Shinshirasuna Denki Kk | Cassette holder for tape recorder |
| JPS5694540A (en) * | 1979-12-27 | 1981-07-31 | Tanashin Denki Co | Cassette type tape recorder |
| GB2067002B (en) * | 1979-12-29 | 1984-12-05 | Pioneer Electronic Corp | Player for magnetic tape cassette recordings |
| JPS57135467A (en) * | 1981-02-14 | 1982-08-21 | Sony Corp | Cassette loading device |
| JPS57212649A (en) * | 1981-06-24 | 1982-12-27 | Hitachi Ltd | Magnetic recording and reproducing device |
| EP0088437B1 (en) * | 1982-03-10 | 1986-02-26 | Hitachi Maxell Ltd. | Recording tape cartridge |
| JPS5948861A (en) * | 1982-09-14 | 1984-03-21 | Matsushita Electric Ind Co Ltd | tape recorder |
| JPS5952451A (en) * | 1982-09-17 | 1984-03-27 | Sanyo Electric Co Ltd | Cassette loading and driving mechanism |
-
1984
- 1984-09-24 SE SE8404758A patent/SE454474B/en not_active IP Right Cessation
- 1984-09-24 GB GB08424092A patent/GB2149187B/en not_active Expired
- 1984-09-24 FR FR8414614A patent/FR2552577B1/en not_active Expired
- 1984-09-24 KR KR1019840005848A patent/KR920002759B1/en not_active Expired
- 1984-09-24 CH CH4571/84A patent/CH666571A5/en not_active IP Right Cessation
- 1984-09-24 AT AT3027/84A patent/AT393176B/en not_active IP Right Cessation
- 1984-09-24 NL NL8402913A patent/NL8402913A/en not_active Application Discontinuation
- 1984-09-24 DE DE19843435006 patent/DE3435006A1/en active Granted
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4706141A (en) * | 1984-09-29 | 1987-11-10 | Sony Corporation | Video tape recorder with first and second loading positions |
| EP0177133A1 (en) * | 1984-09-29 | 1986-04-09 | Sony Corporation | Video tape recorders |
| US4935895A (en) * | 1985-06-07 | 1990-06-19 | Sony Corporation | Magnetic tape cassette loading system in recording and/or reproducing apparatus |
| EP0204585A1 (en) * | 1985-06-07 | 1986-12-10 | Sony Corporation | Magnetic tape cassette loading system in recording and/or reproducing apparatus |
| US4799117A (en) * | 1985-06-07 | 1989-01-17 | Sony Corporation | Magnetic tape cassette loading system in recording and/or reproducing apparatus |
| GB2200239A (en) * | 1987-01-21 | 1988-07-27 | Sony Corp | Cassette loading mechanism |
| GB2200239B (en) * | 1987-01-21 | 1990-12-05 | Sony Corp | Magnetic tape cassette loading mechanism in recording and/or reproducing apparatus |
| GB2219427A (en) * | 1988-05-04 | 1989-12-06 | M4 Data Ltd | Tape drive machines |
| GB2219427B (en) * | 1988-05-04 | 1992-11-18 | M4 Data Ltd | Electric motors |
| EP0391036A1 (en) * | 1989-02-10 | 1990-10-10 | Sony Corporation | Loading mechanism for a recording/reproducing apparatus |
| US5708538A (en) * | 1989-02-10 | 1998-01-13 | Sony Corporation | Drive arrangement for both a cassette loading mechanism and a tape loading mechanism of a recording and reproducing apparatus |
| DE4119304A1 (en) * | 1991-06-12 | 1992-12-17 | Erkelenz Thomas | Road network information display system for motor vehicle - uses data entered on some form of storage medium processed to provide display on VDU screen |
| GB2378807A (en) * | 2001-06-12 | 2003-02-19 | Inc Technologies | Drawer support mechanism for electrical device. |
| GB2378807B (en) * | 2001-06-12 | 2005-06-22 | Inc Technologies | Drawer support mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CH666571A5 (en) | 1988-07-29 |
| KR920002759B1 (en) | 1992-04-02 |
| SE8404758D0 (en) | 1984-09-24 |
| AT393176B (en) | 1991-08-26 |
| KR850002539A (en) | 1985-05-13 |
| SE454474B (en) | 1988-05-02 |
| DE3435006A1 (en) | 1985-04-25 |
| DE3435006C2 (en) | 1993-04-15 |
| SE8404758L (en) | 1985-03-25 |
| GB8424092D0 (en) | 1984-10-31 |
| FR2552577A1 (en) | 1985-03-29 |
| ATA302784A (en) | 1991-01-15 |
| NL8402913A (en) | 1985-04-16 |
| FR2552577B1 (en) | 1987-08-07 |
| GB2149187B (en) | 1986-12-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19950924 |