DE4033095A1 - System for recording-reproducing signals on-from magnetic tape - Google Patents

Abstract

The system comprises cassettes (2, 201), with a magnetic tape on two reels in a housing (202) having two plane-parallel main walls (203, 20) interconnected by transverse walls, of which one transverse wall constitutes a cassette front wall (205), and apparatuses (1) constructed to cooperate with these cassettes. The cassettes have a shutter (212) which is slidable between an open position and a closed position and which comprises imperforate portions (217, 220, 221) and cover portions (222, 223) for covering openings (206, 207, 208, 209, 210) in the cassette in the closed position, and which is also formed with openings (218, 215, 225, 226) for exposing the openings in the cassette in the open position. The apparatus comprises urging parts (30) for moving the shutter and sensing parts (32) adapted to cooperate with cassettes (18) of a second type, for disabling the urging parts.

Description

The invention relates to an arrangement consisting with a magnetic tape cassette device with a drive and loading mechanism for magnetic tape cassettes and from one Magnetic tape cassette, which is provided with recesses, in each have a driver of the loading mechanism at hand have further charge and discharge function intervene can.

Such an arrangement of functionally with each other interacting magnetic tape cassette device and magnetic tape cassette is from German patent P 37 19 890.4 (PHD 87-101). The loading mechanism of this arrangement is in German patent P 39 04 483.1 (PHD 89-019) described. He has a cassette shaft in vertical direction from an ejection plane into a game lowerable level. The cassette slot is designed for playing analog tape cassettes, which are provided with two tape wraps, in the inside of the device engage the winding mandrels of the drive. The Magnetic tape is placed lengthwise on one against the tape pressed while the magnetic head is standing still. It a driver is provided, which is inserted by hand a cassette in the direction of insertion winding hole at the front can occur. This driver pulls the magnet after starting a feed motor continue to insert the tape cassette into the playing position.

Recently, there is a digitally playable magnetic tape cassettes in which a rotating magnetic head  Magnetic tape scans. The dimensions of this digital playable tapes are so different from that of analog playable tapes that a for these tapes completely different drive must be used.

It is an object of the invention to arrange the above mentioned type with a magnetic tape cassette device, the fro conventional analogue tape cassette types can play with a new magnetic tape cassette with which it becomes possible to create the magnetic tape cassette types with different tape playing standards to play.

The object is achieved according to the invention in that that for handling magnetic tape cassette types with under different tape game standards and housing designs for each type of magnetic tape cassette with its specially trained a special driver of the drawer mechanism is assigned.

The different types of magnetic tape cassettes so that everyone treats in their own special way.

In an arrangement in which the magnetic tape cassettes Magnetic tape cartridges of a first type with two parallel ones Main walls are, each with two as winding holes equipped wells are provided, in each a first driver of the loading mechanism can intervene, is featured according to a further embodiment of the invention see that the magnetic tape cassettes of a different Tape game standard with a second type of magnetic tape cassettes are two parallel main walls, one of which is in the main wall essentially closed and with a further deepening is provided, and the loading mechanism a second Mit includes participants who intervene in the further deepening can.  

According to a further embodiment of the invention is pre see that a driver is a type of cassette controlled by Housing parts of the cassette of this one type, by means of of a driver for a cassette of the other type in the Deepening the cassette of this one type to the driver is impressible.

There is a functional interaction here, between the carriers the loading mechanism for one type of cassettes with the recesses of the cassettes instead, the design of one type of cassette is the Intervention of the driver of this type is determined.

According to a further embodiment of the invention is pre see that in a device design on two types of Magnetic tape cassettes the two drivers used for this at the ends of one in the direction of insertion extending rocker bar are provided, the Rocker shaft by means of an adjustable by the loading mechanism Intermediate member is displaceable, the intermediate member via the rocker shaft when inserting a cassette Rocker beam moves in and when you push it out extends and the luffing shaft when extended to a Ramp runs up and moves away from the cassette. With the Rocker beams allow the interplay of recesses in the housings of the magnetic tape cassettes different Types with their assigned carriers on simple Solve way because the different magnetic tape cassette types their recesses at different Have positions. By running the seesaw on The drivers move away at the end of an extension movement as far from the inserted cassette that this, no matter what type it is, for Eject is released.  

According to a further embodiment of the invention is pre see that the seesaw shifting the seesaw beam the Only then seesaw beam in the engagement of a driver lowered into the corresponding deepening position, when the inserting cassette almost reaches this position Has. The drivers only grind over a short one Path length over the cassette housing.

According to a further embodiment of the invention is pre see that the first one is at the back in the direction of insertion Driver with a recess of the first cassette type in Shape of a winding hole and the front in the direction of insertion located second driver with a recess of the second Cassette type in the form of a groove on in the direction of insertion interact at the front edge of the housing. So it works always a driver on a cassette side wall on and pushes the other driver into the recess Cassette. The control of the respective deepening takes place all by itself only by moving the Magnetic tape cassette opposite the seesaw beam. Once a Carrier in the recess assigned to him a feed motor pulls over the magnetic tape cassette the driver further into the shaft of the loading mechanism a.

The magnetic tape cassette that can be played back is on hers Open front. The magnetic head can be inserted into the openings of the device and the pressure rollers. At If this cassette is not used, it will be used in one Storage container kept. So you usually have with each cassette always two parts, namely the cassette itself and the storage case. At the digital playable cassette is placed on the storage case waived because the front of the cassette with their  Openings is closed by a slide. Before starting such a digitally playable Cassette must slide the slide out of the closed position be moved to an open position in which the Openings in the cassette for insertion of the head, pressure roll and expose sound waves. So the slider needs only to be moved when the cassette is in operation is taken. Also, no slide valve needs to be moved if an analog playable cassette without Slider is used. So the loading mechanism must recognize whether he has to open a slide or not.

According to a further embodiment of the invention this purpose provided that the seesaw with a lateral approach is provided via a linkage an opening pin on the front of the cartridge a guide contour of the cassette can swivel in Moving a slide in its closed position Openings on the front of the magnetic tape cassette closes, the linkage on a fork-shaped Lever acts with two tine-forming arms that over the two side walls of the cassette are pivotable. A Arm carries the opening pin and guides it Swivel into the guide contour of one side wall and the other arm reaches under the other side wall.

The rocker bar that already recognizes which type of cassette inserted into the loading mechanism shaft is, therefore, ensures that the opening pin when Swiveling a digital cassette into a position is pivoted in which he holds the slide, so that the front of the digitally playable Magnetic tape cassette opens. When inserting one In contrast, the analog cassette remains outside the Magnetic tape cassette stand so that the analog playable  Cassette that has no guide contour for a slide exhibits, can pass without being disturbed.

So that the arms of the fork over the two flat sides of the Can pivot the cassette, the base web of the fork is in swivel in the vertical direction in front of the cassette front stored in cash. The further advantage of the fork arrangement is that one arm securely holds the opening pin can lead along the guide contour. Against one Jumping out of the guide contour is secured through the other fork arm, the other Cassette flat side overlaps and evasion of the Magnetic tape cassette not permitted due to tolerances. The opening pin must therefore always be in the guide contour remain as long as the cassette is inserted.

The invention is explained in more detail with reference to the drawing. Show it:

Fig. 1a is an audio magnetic tape cassette, the analog operation, and is analogous playable

FIG. 1b is an audio magnetic tape cassette, the recorded digital and digital playable with a slider, which closes openings of the cassette in the rest position at the front,

FIG. 1c, the front part of the magnetic tape cassette according to Fig. 1b with the slider pushed aside, wherein the slider is in the open position,

Fig. 2a shows a retraction mechanism for both an analog and a digital playable magnetic tape cassette with a cassette holder in the position in which the cartridge can be pulled out or pushed in by hand,

Figure 2b shows the retraction mechanism after the insertion of a playable analog magnetic tape cassette in which a driver is in a winding hole of the magnetic tape cartridge falls into, so that the driver can bring the magnetic tape cassette upon further retraction.,

Fig. 2c the retraction mechanism after the insertion of a digital playable magnetic tape cartridge, wherein a driver of the digital playable magnetic tape cassette is sunken in a recess of the housing and the magnetic tape cassette in the further drawing-entraining,

FIGS. 3a and 3b show two diagrammatic representations of parts of the retraction mechanism of FIG. 2a to 2c,

Fig. 4 is a pivoting lever, with the bar upon insertion of the digital playable magnetic tape cartridge of the apertures its front closing slide shifting aside in a position in which it is ineffective,

Fig. 5 the pivoting lever in a position in which it is pivoted over the housing of a digital playable cassette and the slide has pushed aside,

Fig. 6 is a linkage, which transmits the detection of the inserted magnetic tape cassette type to the pivoting lever according to FIGS . 4 and 5, either to pivot it into the engagement position with a digitally playable magnetic tape cassette or to pivot it out of the engagement area of the magnetic tape cassette in order to do so To allow playback of an analog playable magnetic tape cassette.

Fig. 1 shows a magnetic tape cassette 3 , in which a magnetic tape is guided on dashes 4 indicated by dash-dotted lines. The magnetic tape reel 4 are wound up on winding cores 5 , into the housing through winding holes 6 of the cassettes 7, not shown winding mandrels of a playback device can reach through. At the front 8 of the housing 7 provided with parallel upper ( 7 a) and lower ( 7 b) main walls, openings 9 are provided through which the pressure rollers of the device can be inserted from the outside against the magnetic tape guided in the cassette 3 . Another opening 10 in the middle is used to insert a magnetic head. If the magnetic tape cassette is used in a device with a loading mechanism, then it is inserted into a cassette slot 28 in the direction of an arrow 11 with a narrow front 8 lying at the front.

The cassette 3 which can be played back analogously according to FIG. 11 has winding holes 6 in both main walls 7 a, 7 b.

In Fig. 1b, a digitally playable magnetic tape cassette 13 is shown graphically, which has a housing 14 in which there are again magnetic tape reel 15 . The magnetic tape windings 15 are wound on winding cores 5 indicated by dashed lines. In the game position, the winding cores 5 sit on the winding mandrels of the device, not shown. This digitally playable cassette 13 thus has winding holes only in the lower main wall 19 of the parallel main walls 18 , 19 .

The magnetic tape cassette according to FIG. 1b is provided with a slide 16 which can close insertion openings 9 and 10 for the pressure rollers and magnetic head on the front 17 of the cassette. In the illustration of FIG. 1b, the slide 16 is in its closed position, in which it closes the openings 9 and 10. The slider 16 has a U-shaped shape and, in addition to the front 17, also runs over an upper main wall 18 and a lower main wall 19 of the magnetic tape cassette 13 .

As the magnetic tape cassette 13 for playing in an apparatus having Lademechanis mechanism in the direction of an arrow 11 is inserted with its narrow side forward rails 20 in the shaft of the device in the representation of FIG. 1. Near the front narrow side 20 , a groove 21 is brought into the cassette housing from the upper main wall 18 . A guide contour 22 is provided in the area of the front side 17 and the upper side wall 18 . This guide contour 22 is partially closed in the closed position of the slide 16 according to FIG. 1b and only one inlet part 23 with part of a guide edge 24 remains free. The guide edge 24 rises from a guide surface 25 , on which an opening pin 26 can run, which is shown in FIGS. 4 and 5.

The playing magnetic tape cassette device is provided with a loading mechanism 27 which can play both magnetic tape cassettes of the type shown in FIG. 1a and FIG. 1b. In Fig. 2a, this loading mechanism 27 is shown in section with a fictional magnetic tape cassette inserted into a cassette slot 28 , which has recesses serving both types of cassette for retraction. These are a winding hole 4 for the analog playable magnetic tape cassette and the groove 21 in the narrow side 20 for the digital playable magnetic tape cassette. A rocker beam 30 is mounted on the top of the cassette shaft 28 by means of a rocker shaft 29 . The rocker beam extends in the direction of the magnetic tape cassettes 3/13 and, seen from the front of the device 31 , has an analog cassette driver 32 and further to the inside of the device a digital cassette driver 33 . By rocking movements around the rocker shaft 29 , either the analog driver 32 or the digital driver 33 can be pressed into the respectively assigned recess 4 (winding hole) or 21 (driver groove 21 ).

For a better explanation of the operation of the loading mechanism 27 , the top 28 a of the cassette shaft 28 is shown in a diagram in Fig. 3a. It can be seen that this top 28 a has a ramp 28 b, over which the shaft wall of a part 28 c, in the area of which the cassette on the shaft wall 28 a rests, merges into a further from the cassette 28 d.

In the direction of insertion of the cassettes 3/13 extends a longitudinal slot 28 e, which runs over the ramp 28 b. About the top 28 a of the cassette shaft, the rocker shaft 29 is guided transversely to the direction of insertion. The rocker shaft is guided by a bow-shaped intermediate member 34 , which is shown diagrammatically in FIG. 3b. This intermediate member 34 has two legs 34 a and 34 b, which are connected in the insertion direction at the front by means of a base 34 c. The distance between the legs 34 a and 34 b is chosen so that the intermediate member in the slot 28 e of the cassette shaft is longitudinally displaceable. To make this clearer, the leg is shown in Fig. 3a b 34 shown aborted. Towards the front of the device 31 , the legs 34 a and 34 b end in leg heads 34 d and 34 e, in which slot guides 35 are located in the vertical direction. In this slot guides 35, the rocking shaft 29 up and down slidably. In the area of the base 34 c there is an actuating pin 36 which engages in a hole 37 of a feed lever 38 of the loading mechanism. On the underside of the intermediate member 34 , a sliding pin 39 is provided. So that the intermediate member 34 can not slip out of the slot 28 e, there is a cover plate 40 above half of the top 28 a of the cassette shaft.

In the illustration of FIG. 2a, the feed lever 38 has the intermediate member 34 wall as far toward the front pushed 31 that the rocking shaft is accumulated on the d abgehobe NEN shaft part 28 29. The rocker bar 30 has thus been lifted out of the cassette shaft interior 41 to such an extent that both cassette types 3/13 are exposed and can be removed from the loading mechanism 27 .

Fig. 2b now shows the insertion of a cash analog playback magnetic tape cartridge 3 in the cartridge well 28. The front narrow side 12 of the magnetic tape cassette 3 presses against the sliding pin 39 and the magnetic tape cassette 3 takes the intermediate member 34 in the feed direction (arrow 11 ). The rocking shaft 29 runs while c on the ramp 28 b down to the voltage applied to the cartridge shaft portion 28th The rocker beam 30 thus comes into the engagement area of the cassette. The digital driver 33 comes into contact with the upper main wall 7 a of the cassette 3 and presses the analog cassette driver 32 into the winding hole 6 . The feed lever 38 takes on the actuating pin 36, the intermediate member 34 in the direction of arrow 11 , because in the meantime a motor, not shown, has started for the mechanical feed. The analog driver 32 continues to pull the magnetic tape cassette through the winding hole 6 . In Fig. 2c of the functional end of the feeder shown in the drawing in the digital playable cassette 13. It is again assumed the position according to Fig. 2a, in which the intermediate member has moved towards the cassette front wall 31 34 and the rocking shaft 29 rests on the raised shaft part 28 d. If the digital cassette 13 is now pushed in, then the narrow side 20 in front pushes the sliding pin 39 back into the feed direction 11 . The luffing shaft 39 moves down from the lifted shaft part 28 d to the adjacent shaft part 28 c. The seesaw beam 30 thus comes into the interaction area with the cassette 13 . The analog driver 32 abuts the upper main wall 18 of the digital cassette 13 and presses the digital driver 33 into the groove 21 . The feed lever 38 is moved in the direction of the arrow 11 when the feed motor has started up in the meantime. He takes the link 34 and the digital cassette 13 with him via the adjusting pin 36 . In this way, the digital cassette reaches its playback position.

The position of the ramp 28 b is selected so that the luffing shaft 29 can only slide down from the lifted shaft part 28 d onto the adjacent shaft part 28 c when the drivers have already come into the vicinity of the depressions 6 and 21 as part of the pull-in movement . Thus the path along which the respective driver grinds over the upper main wall 7 a is only short and the possible formation of the grinding tracks is limited to a narrow area.

By pivoting the seesaw bar 30, this indicates which type of magnetic tape cassette, analog 3 or digital 13 , is being drawn in by the loading mechanism. This indication lends itself to also causing the slide 16 to be pushed aside into the open position.

A pivot lever 43 , which is shown in FIG. 4, is used to actuate the slide 16 . This pivoting lever 43 is pivotable about an axis 44 . The two-arm swivel lever carries the opening pin 26 on an arm 43 a and an adjusting pin 45 on a rear lever arm 43 b. In extension of the arm 43 a extends an arm 43 c beyond the axis 44 . The arms 43 a and 43 b together with a they connect the spacer 43 d fork, which can be pivoted via the upper main wall 18 and the lower main wall 19 of the digitally playable cassette. When playing an analog playable cassette, the opening pin 26 would be in the way. Therefore, the pivoting lever 43 is pivoted in the illustration according to FIG. 4 so that the arms 43 a and 43 b lie outside the cassette to be inserted. The analog cassette 3 can be performed at this position of the pivot lever 43 past the latter in the play position.

It is different when inserting a digitally playable cassette 13 , because with it the slide 16 must be pushed away in the direction of an arrow 46 . The pivot lever 43 is therefore pivoted with its arms 43 a and 43 c about the axis 44 into the guide contour 22 . The illustration of FIG. 5 is the end position in which the slider 16 is already completely pushed aside. The pushing away of the slider 16 takes place with gradually pivoting pivoting lever 43 a and begins at the front inlet part 23rd The slide is still at this moment with its edge in the drawing on the right on a stop edge 47 of the slide guide. The opening pin 26 now moves along the guide contour 22 when the cassette 13 is pushed in further and pushes the slide 16 until it falls behind a locking edge 48 in the end position according to FIG. 5. In this position, the slide 16 is securely blocked in the open position. When pivoting the pivot lever 43 , the arm 43 a is pivoted over the top of the side wall 18 and the second arm 43 b pivoted under the lower side wall 19 of the analog cassette 13 . The cassette is in this way between the two arms 43 a and 43 b and the pin 26 is exactly how deep it must engage in the guide contour 22 . This ensures that the pin cannot accidentally slip out of the guide contour.

A linkage is used to transmit the swivel movement. This linkage 49 is formed as a resilient plastic bracket of L-shaped shape with arms 49 a and 49 b. The end of the arm 49 a is rotatably supported about a bearing 58 on the cassette shaft 28 . In addition, the arm 49 a has a control edge 51st The end of the arm 49 b engages claws 52 over the setting pin 45 . On the seesaw bar 30 , as FIG. 3b clearly shows, an attachment 53 is provided above the analog driver 32 , which is shown broken off in FIG. 6. If the rocker bar 30 is lowered when inserting an analog cassette 3 with the analog driver 32 in a winding hole 6 , then when moving the intermediate member 34 in the feed direction according to arrow 11, the shoulder 53 cannot abut the control cam 51 . The approach is too deep. Therefore, the approach 53 runs under the arm 49 a of the linkage 49 . Between the arms 49 a and 49 there is such a tension that the pivot lever 43 assumes the position shown in FIG. 4, ie is pushed out of the drive-in area of the cassette. The linkage 49 lies against a stop 49 c. Instead of a bracing of the arms 49 a and 49 b, a biasing spring 49 d can also be seen, which strives to pivot the linkage 49 counterclockwise around the bearing 50 . If a digitally playable cassette is inserted and the digital driver 33 is pressed into the groove 21 , then the projection 53 comes up and runs onto the control edge 51 . This means that during the approach movement approach 53 presses lever arm 49 from position A for analog playback to position B for digital playback. The pivot lever 53 thus pivots in a clockwise direction and the opening pin 26 comes into the region of the guide contour 22 while pretensioning the spring of the inherently resilient rod 49 .

Claims (11)

1. Arrangement consisting of a magnetic tape cassette device with a drive and loading mechanism ( 27 ) for magnetic tape cassettes and a magnetic tape cassette ( 3 , 13 ) which is provided with depressions ( 6 ), in each of which a driver ( 32 ) of the loading mechanism ( 27 ) can intervene to handle further loading and unloading functions, characterized in that for handling magnetic tape cassette types ( 3 , 13 ) with different tape clearance standards and housing designs for each magnetic tape cassette type with its specially designed recess ( 6 , 21 ), a special driver ( 32 , 33 ) of the loading mechanism ( 27 ) is assigned. 2. Arrangement according to claim 1, wherein the magnetic tape cassettes magnetic tape cassettes ( 3 ) of a first type with two parallel main walls ( 7 a, 7 b), each provided with two recesses ( 6 ) equipped as winding holes, in each of which a first Carrier ( 32 ) of the loading mechanism ( 27 ) can intervene, characterized in that the magnetic tape cartridges of a different tape are standard magnetic tape cartridges ( 13 ) of a second type with two parallel main walls ( 18 , 19 ), one main wall of which is essentially closed and one Another recess ( 21 ) is provided, and that the loading mechanism ( 27 ) comprises a second driver which can engage in the further recess ( 21 ). 3. Arrangement according to claim 1 or 2, characterized in that a driver ( 32 , 33 ) for a cassette type ( 3 , 13 ), controlled by housing parts ( 42 , 18 ) of the cassette ( 3 , 13 ) of this one type, by means of a driver ( 33 , 32 ) for a cassette ( 3 , 13 ) of the other type in the recess ( 6 , 21 ) of the cassette of this one type to be pressed with. 4. Arrangement according to claim 3, characterized in that in a device design on two types of magnetic tape cassettes ( 3 , 13 ), the two drivers used therefor ( 32 , 33 ) at the ends of a device in the direction of insertion movement ( 11 ) extending rocker beam ( 30 ) are provided, the rocker shaft ( 29 ) of which can be displaced by means of an intermediate member ( 34 ) which can be adjusted by the loading mechanism ( 27 ). 5. Arrangement according to claim 4, characterized in that the intermediate member ( 34 ) on the rocker shaft ( 29 ) when pushing a cassette ( 3 , 13 ) the rocker bar ( 30 ) with and when they are pushed out, the rocker shaft ( 29 ) runs out on a ramp ( 28 b) and moves away from the cassette ( 1 , 13 ). 6. Arrangement according to claim 5, characterized in that the rocker beam ( 30 ) displacing rocker shaft ( 29 ) the rocker beam ( 30 ) only in the position of the intervention of a participant in the associated recess ( 6 , 21 ) lowering position when the rocker bar ( 30 ) has almost reached this position. 7. Arrangement according to claim 4, characterized in that the rear driver ( 32 ) located in the insertion direction with a recess ( 6 ) of the first cassette type ( 3 ) in the form of a winding hole and the second driver ( 33 ) located in the insertion direction at the front with a Recess ( 21 ) of the second type of cassette ( 13 ) cooperate in the form of a groove on the front edge of the housing ( 20 ) in the direction of insertion. 8. Arrangement according to claim 4, characterized in that the seesaw beam ( 30 ) is provided with a lateral extension ( 53 ), the opening pin ( 26 ) on the front ( 17 ) of the cassette ( 13 ) via a linkage ( 49 ) can pivot into a guide contour ( 22 ) of the cassette ( 13 ) to move a slide ( 16 ) which, in its closed position, closes openings ( 9 , 10 ) on the front side ( 17 ) of the magnetic tape cassette ( 13 ). 9. Arrangement according to claim 8, characterized in that the linkage ( 49 ) acts on a fork-shaped lever with two prong-forming arms ( 43 a, 43 b) which are pivotable about the two side walls ( 18 , 19 ) of the cassette ( 13 ) , wherein one arm ( 43 a) carries the opening pin ( 26 ) and engages when pivoting into the guide contour ( 22 ) of one side wall ( 18 ) and the other arm ( 43 b) engages under the other side wall ( 19 ). 10. Magnetic tape cassette device for use in one Arrangement according to one of the preceding claims. 11. Second type magnetic tape cassette for use in one Arrangement according to one of Claims 1 to 9 inclusive.