JP3084668U - Magnetic tape unit - Google Patents

Abstract

(57) Abstract: A tape cassette can be positioned at a reference position for tape loading or the like by utilizing the elasticity provided on a synchronous shaft for moving a pair of left and right cassette receivers. To do. SOLUTION: Left and right cassette receiving tables 32 include a cassette receiving section 32a and a cassette pressing section 32c. A pair of left and right receiving tray drive levers 40 provided corresponding to the left and right cassette receiving trays 32, and seats 21, 22 for seating the tape cassette 100 in the course of lowering the cassette receiving tray 32 toward the cassette transfer position. Is provided. The pedestal drive levers 40 are connected to each other by a synchronous shaft 41 having elasticity. The downward swinging operation by the pedestal driving lever 40 at a stage after the tape cassette 100 is seated on the receiving seats 21 and 22 is allowed by the bending deformation of the synchronous shaft 41.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a magnetic tape device, and more particularly to a magnetic tape device in which a reference position of a tape cassette is regulated by pressing the tape cassette against a seat.

[0002]

[Prior art]

 Principal parts of this type of magnetic tape device are illustratively shown in FIGS. In this magnetic tape device, seats 21, 22, 23 which are set at the same level as shown in FIG. 15 or FIG. 16 are provided at a plurality of positions of a metal chassis 10 having left and right side plate portions 11. ing. Of these, the two seats 21 and 23 in the figure are formed by the upper end surfaces of the rising pieces 13 and 14 formed by cutting and raising a part of the chassis 10, and the other seat 22 is It is formed by the upper end surface of a cylindrical body 15 made of synthetic resin attached to the chassis 10. Pointed guide pins 24 and 25 are attached to each of the two receiving seats 21 and 22 arranged side by side.

[0005] A cassette holding frame 30 is attached to each of the left and right side plates 11 of the chassis 10 as shown in FIG. The cassette holding frame 30 includes a receiving plate 31 formed of a metal plate that is long in the left and right directions, and left and right cassette receiving tables 32 fixed to left and right ends of the receiving plate 31, respectively. The cassette receiving table 32 is a synthetic resin molded body integrally provided with a cassette receiving portion 32a, a side wall portion 32b, and a cassette pressing portion 32c provided at an upper end portion of the side wall portion 32b. As shown in FIGS. 13 and 14, a leaf spring 34 is provided on the cassette pressing portion 32c of the one cassette receiving table 32, and a stopper 37 is provided on the side wall 32. The other cassette receiver 32 has the same configuration. As shown in FIG. 11, a projection 35 and a guide pin portion 36 are provided on each of the left and right cassette receivers 32 so as to project outward, and these projections 35 and the guide pin portion 36 are provided on the left and right sides of the chassis 10. Each of the side plate portions 11 is slidably fitted into cam grooves 16 and 17 indicated by phantom lines in FIG. A reciprocating path A1 extending in the front-rear direction and a hoistway A2 extending in the vertical direction are formed by the cam grooves 16 in which the projections 35 are fitted. The cam groove 17 in which the guide pin portion 36 is fitted has the same configuration.

As shown in FIG. 11, pedestal driving levers 40 are provided inside the left and right side plates 11 of the chassis 10. These cradle drive levers 40 are configured so that their swinging operations are synchronized by a synchronous shaft 41 made of metal, and can swing around an axis P indicated by a chain line in FIG. As can be inferred from a combination of FIG. 12 showing the pedestal driving lever 40 on one side, the pedestal driving lever 40 has its base attached to the side wall 11 of the chassis 10 via the support shaft 42, and The axis of the support shaft 42 coincides with the axis P. The pedestal driving lever 40 is provided with an elongated groove 43 in which the projection 35 is fitted, and a torsion coil spring that presses the projection 35 against a groove wall 43a of the groove 43. 44 are attached. Then, the pedestal driving lever 40 on one side is swung in the front-rear direction or the up-down direction about the axis P by a driving source (not shown).

In the conventional magnetic tape device having the above-described configuration, the cassette holding frame 30 moves along a cassette loading / unloading path extending between a cassette insertion / removal position and a cassette transfer position lower than the cassette insertion / removal position. Then, the cassette carry-in / out path A is formed by the reciprocating path A1 and the hoistway A2 described with reference to FIG.

When the cassette holding frame 30 is located at the cassette insertion / removal position, as shown by the solid line in FIG. 12, the projection 35 is located on the reciprocating path A 1, and the box-shaped tape cassette 100 is inserted / removed from the cassette. It is inserted into the cassette holding frame 30 waiting at the position. When the tape cassette 100 is inserted into the cassette holding frame 30, as shown in FIG. 13, the tape cassette 100 abuts against the stopper 37 while being mounted on the receiving plate 31 and the cassette receiving portion 32a, and It is pressed against the receiving plate 31 and the cassette receiving portion 32a by the spring force. As a result, the tape cassette 100 is positioned at a fixed position of the cassette holding frame 30.

In this state, when the pedestal driving lever 40 is swung rearward as indicated by an arrow R in FIG. 12, the projection 35 pressed against the groove wall 43 a by the spring body 44 moves the reciprocating path A 1 backward. Then, when the cradle drive lever 40 swings downward, the projection 35 pressed against the groove wall 43a by the spring body 44 enters the hoistway A2 from the reciprocating path A1 and moves up and down the hoistway A2. Since the cassette holding frame 30 moves down along A2, the cassette holding frame 30 moves along with the protrusions 35 along the reciprocating paths A1 and A2. When the projection 35 is pushed down the hoistway A2 by the swinging operation of the pedestal driving lever 40, the cassette holding frame 30 is also lowered together with the projection 35. During the lowering of the cassette holding frame 30, the positioning holes 110, 110 provided in the tape cassette 100 on the receiving plate 31 as shown in FIG. 100 is seated on the seats 21 and 22 and the seat 23 described with reference to FIG.

On the other hand, the pedestal driving lever 40 is slightly swung downward even after the tape cassette 100 is seated on the receivers 21, 22 and 23. At this stage, during the swinging of the pedestal driving lever 40, the cassette holding frame 30 is also lowered as the projection 35 is pushed down, and the cassette pressing portion 32c is moved to the upper surface of the tape cassette 100 as shown in FIG. Abut. After the cassette pressing portion 32c abuts on the upper surface of the tape cassette 100 in this manner, the spring body 44 engaged with the projection 35 which has stopped descending is deformed against its elasticity, so that the pedestal driving lever 40 Swing (arrow R1) until reaching the limit position is allowed. Therefore, in a state where the cradle driving lever 40 has swung to the limit position, the cassette pressing portion 32a is pressed by a force corresponding to the reaction force of the elastic deformation of the spring body 44 as shown by the arrow d in FIG. The tape cassette 100 is pressed downward against the seats 21, 22, 23 (see FIGS. 15 and 16). Thus, the tape cassette 100 is positioned at the reference position for tape loading, recording and reproduction, and the like.

On the other hand, JP-A-63-50963 (Prior-art 1), JP-A-63-64665 (Prior-art 2) and JP-A-10-199079 (Prior-art 3) disclose cassettes. There is a description about using a leaf spring material to position a tape cassette inserted into a holder (corresponding to the cassette holding frame 30 in FIG. 11) with respect to the cassette holder. Further, in the above-mentioned Prior Examples 1 to 3 and Japanese Utility Model Application Laid-Open No. Sho 62-48036 (Prior Art 4), the cassette holder corresponding to the cassette holding frame 30 in FIG. And a member that supports the entire width of the lower surface of the tape cassette.

[0010]

[Problems to be solved by the invention]

 In the conventional magnetic tape device described with reference to FIGS. 11 to 16, the leaf spring 34 for positioning the tape cassette 100 with respect to the cassette holding frame 30 and the tape cassette 100 seated on the receivers 21, 22, 23 are provided. A spring body 44 is required to be pressed against the seats 21, 22, 23 and positioned at the reference position, and a process of assembling them is required, which increases the number of parts and the number of assembling steps, thereby increasing cost. There was a problem that led to.

On the other hand, since the members corresponding to the spring body 44 are shown in Prior Examples 1 to 3, the above-mentioned problems cannot be solved by each of these Prior Examples.

The present invention has been made in view of the above.

That is, according to the present invention, in the conventional magnetic tape device, as described in FIG. 11, the synchronous shaft 41 connecting the left and right cradle driving levers 40 is made of metal. Paying attention to the fact that metal has a unique elasticity and utilizing the elasticity of the synchronous shaft, the spring body 44 and the leaf spring 34 used in the conventional magnetic tape device can be omitted. It is intended to provide a magnetic tape device.

[0014]

[Means for Solving the Problems]

 In the magnetic tape device according to the present invention, the pair of left and right cassette receiving trays moving on the cassette loading / unloading path extending between the cassette loading / unloading position and the cassette transfer position lower than the cassette loading / unloading position is provided with a tape cassette mounting rack. And a cassette pressing portion provided integrally with the cassette receiving portion so as to face the tape cassette mounted on the cassette receiving portion from above, and a pair of left and right cassettes is provided. The pair of left and right receiving tray press-down means are respectively lowered from above the cassette receiving position toward the cassette receiving position, and the pair of left and right receiving trays is being lowered toward the cassette receiving position. And a seat for seating the tape cassettes on the cassette receivers. The pedestal press-down means are linked by a synchronous shaft for synchronizing them. Is, so that its tape cassette by the cassette pressing portion for interlocking the tape cassette seated on the seat to the downward movement of the cassette receiving stand is pressing down is positioned in the reference position. In this respect, it is common to conventional magnetic tape devices.

[0015] In the magnetic tape device of the present invention, the synchronous shaft is formed of an elastic rod material whose both ends are respectively fixed to the pair of left and right pedestal pressing means. In addition, the operation for lowering the cassette cradle by the cradle pressing means at the stage after the tape cassette is seated on the cradle causes the cassette cradle to move the cradle pressing means in the left-right direction. When pressed outward, the pedestal pressing means is tilted while bending and deforming the synchronous shaft.

According to this, after the tape cassette is seated on the receiver, when the receiver lowering means further presses the cassette receiver, the elastic resetting force of the flexurally deformed synchronous shaft causes the cassette pressing portion of the cassette receiver to return. And the cassette pressing part presses the tape cassette to the seat. For this reason, since the synchronous shaft exerts the same action as the spring body 44 described in FIG. 12, the spring body 44 can be omitted.

In the present invention, the operation for lowering the cassette receiving table by the receiving table pressing means at a stage after the tape cassette is seated on the receiving table is performed by sliding the cassette pressing section against the tape cassette. The cassette pedestal presses the pedestal pressing means by the moving operation, the displacement of the cassette pedestal to the outside in the left-right direction due to the sliding operation of the cassette pressing portion, and the displacement of the cassette pedestal. The operation is performed through an operation in which the tilting unit is depressed to the right and left in the left-right direction, and an operation in which the tilted receiving table pressing means bends and deforms the synchronous shaft against elasticity. Also in this case, the synchronization shaft exerts the same action as the spring body 44 described with reference to FIG. 12, so that the spring body 44 can be omitted.

In the present invention, the pedestal press-down means engages with the projection provided on the cassette pedestal and swings downward about a fixed position as a fulcrum, thereby pushing down the projection and receiving the cassette. The pedestal drive lever lowers the pedestal from above the cassette delivery position toward the cassette delivery position, and is pressed against the free end of the pedestal drive lever by the cassette cradle displaced outward in the left-right direction. It is possible to adopt a configuration in which a pressure receiving portion is provided. According to this, it is possible to configure the pedestal pressing means without making a significant change to the configuration of the conventional magnetic tape device described in FIG.

In the present invention, when the cassette receiving table into which the tape cassette is inserted is drawn from the cassette insertion / removal position to a predetermined position behind the insertion / removal position, the pressure receiving portion overlaps the cassette receiving table and the receiving table overlaps with the cassette receiving table. The drive lever is tilted outward in the left-right direction, and the tilting of the pedestal drive lever causes the synchronous shaft to bend and deform against the elasticity. It is possible to adopt a configuration in which the pressure is applied to the tape cassette via the pressure receiving portion of the table driving lever and the cassette pressing portion of the cassette receiving table. According to this, since the synchronous shaft exerts the same action as the conventional leaf spring 34 described in FIG. 13, the leaf spring 34 can be omitted.

Further, the magnetic tape device of the present invention can be configured as follows. By doing so, the conventional leaf springs 34 and spring bodies 44 become unnecessary. It is possible to configure a magnetic tape device without using a member that replaces the magnetic tape device.

That is, this operation is achieved by a pair of left and right cassette receiving trays moving on a cassette loading / unloading path extending between a cassette insertion / removal position and a cassette transfer position lower than the cassette insertion / removal position. A cassette receiving portion and a cassette pressing portion integrally provided in the cassette receiving portion so as to face the tape cassette mounted on the cassette receiving portion from above are provided. A pair of left and right receiving tray pressing means for lowering the cassette receiving position from above the cassette receiving position to the cassette receiving position, and the cassettes while the pair of left and right cassette receiving trays are being lowered toward the cassette receiving position; A seat for seating the tape cassette on the receiving portion, and a synchronous shaft for the receiving platform pressing means to synchronize them. The tape cassette seated on the seat is pressed downward by the cassette pressing part interlocking with the lowering operation of the cassette receiver, so that the tape cassette is positioned at the reference position. In the tape device, the pair of left and right pedestal pressing means is engaged with the projection provided on the cassette pedestal and swings downward about a fixed position as a fulcrum, thereby pushing down the projection and causing the cassette to be depressed. A tray drive lever that lowers the tray from above the cassette transfer position toward the cassette transfer position. When it is retracted, the pressure receiving part provided at the free end of the above-mentioned pedestal drive lever overlaps the upper end of the cassette pedestal, and By tilting the pedestal drive lever outward in the left-right direction, the synchronous shaft is bent and deformed against elasticity, and the elastic return force of the bent and deformed synchronous shaft is reduced by the pedestal drive lever. The pressure receiving part and the cassette pressing part of the cassette receiving stand are adapted to be applied to the tape cassette, and the tape driving lever at the stage after the tape cassette is seated on the receiving seat. The downward swinging operation for lowering the cassette receiver is caused by the sliding operation of the cassette pressing part with respect to the tape cassette and the lateral movement of the cassette receiving part with the sliding operation of the cassette pressing part. Due to the displacement operation and the displacement operation of the cassette cradle, the upper end of the cassette cradle presses the pressure receiving portion of the cradle drive lever outward in the left-right direction to tilt the cradle drive lever. Operation and, tilting the said pedestal pressing means is exhibited by adopting the structure that is adapted to be allowed through, and operations to be deformed against the elasticity of the synchronization shaft.

[0022]

[Embodiment of the invention]

 FIG. 1 is a front view illustratively showing a main part of an embodiment of a magnetic tape device according to the present invention. FIG. 2 is a schematic side view of a cassette receiving stand 32 viewed from the outside in the left-right direction. FIG. 4B is a schematic side view for explaining the relationship between the set receiving table 32 and the cam groove 16 and the like, FIG. 4B is a schematic cross-sectional view of a portion along the line IIIB-IIIB in FIG. FIG. 5B is a schematic cross-sectional view showing a mounting structure of the rotation shaft 41 and the pedestal driving lever 40, FIG. 5B is a schematic cross-sectional view of a portion along the line IVB-IVB of FIG. FIG. 6B is a schematic cross-sectional view taken along the line VB-VB of FIG. 6A, and FIG. 6A is a state of the initial stage of loading the tape cassette. (B) is a schematic partial front view of the same as viewed from the left and right sides, and FIG. 7 (A) is a tape cassette. FIG. 8B is a schematic partial front view of the state of the loading intermediate stage viewed from the inside in the left-right direction, and FIG. 8A is a schematic partial view of the state of the final stage of loading the tape cassette viewed from the left-right inside. FIG. 9B is a side view, FIG. 9B is a schematic partial front view, FIG. 9 is a schematic partial cross-sectional view in a state where the tape cassette 100 is seated on the receivers 21 and 23, and FIG.

When the configuration of the magnetic tape device according to this embodiment is compared with the configuration of the conventional magnetic tape device described with reference to FIGS. 11 to 16, the leaf spring 34 and the spring body used in the conventional magnetic tape device are compared. 44 is omitted, the receiving plate 31 of the cassette holding frame 30 is omitted, and the tape cassette 100 can be held only by the pair of left and right cassette receiving stands 32; The configuration of the cassette receiving table 32 and the receiving table driving lever 40, the coupling structure between the synchronous shaft 41 and the receiving table driving lever 40, and the like are different.

In this embodiment, a pair of left and right cassette receivers 32 includes a cassette receiver 32a, a side wall 32b, an arm 32d connected to the upper end of the side wall 32b, and a tip end of the arm 32d. It is a U-shaped synthetic resin integral molded body provided with a cassette pressing portion 32c provided downward. Then, as can be seen in FIG. 3B, the projection 35 fitted into the cam groove 16 of the side plate 11 of the chassis 10 has a large-diameter portion 35a located inside the side plate 11 and the side plate 11. And a flange portion 35b located outside of the main body. The guide pin portion 36 shown in FIG. 3A has a similar structure and is assembled to the cam groove 17. Further, in this embodiment, one guide pin portion 38 is added, and this guide pin portion 38 has the same structure as the guide pin portion 36 and is assembled to another cam groove 18 added to the side plate portion 11. Then, the cassette receiving base 32 can be tilted in the left-right direction with a slight swing width with respect to the side plate part 11, and the cassette receiving base 32 is moved by the action of the projections 35 and the guide pin parts 36, 38. It can be smoothly slid back and forth and up and down along 16, 17, and 18.

In the above-described cassette receiving table 32, it is desirable that the vertical interval between the cassette receiving section 32 a and the cassette pressing section 32 c is slightly shorter than the thickness of the tape cassette 100. With such a configuration, when the tape cassette 100 is inserted into the left and right cassette receivers 32 at the cassette insertion / removal position and mounted on the cassette receiver 32a, the tape cassette 100 is inserted into the cassette as shown in FIG. Since the tape cassette 100 is inserted between the cassette receiving portion 32a and the cassette pressing portion 32c, the tape cassette 100 is nipped by the cassette receiving portion 32a and the cassette pressing portion 32c, and is temporarily positioned with respect to the cassette receiving table 32.

The rocking operation of the pair of left and right cradle drive levers 40 is synchronized by a synchronous shaft 41. Further, as shown in FIGS. 4A and 4B, one end of the synchronous shaft 41 is bent at a right angle, and the bent portion 41a is inserted into the holding hole 42 provided in the pedestal driving lever 40 on one side. It is fitted. The other end of the synchronous shaft 41 and the pedestal driving lever 40 on the other side are also coupled in the same configuration. Therefore, when the left and right cradle drive levers 40 are tilted in the left-right direction, the synchronous shaft 41 bends and deforms against its own elasticity. The pedestal driving lever 40 can swing about an axis P indicated by a dashed line in FIG. 1, and the pedestal driving lever 40 has a base portion via a support shaft 42 as shown in FIG. 11 and that the axis of the support shaft 42 coincides with the axis P is the same as that of the conventional magnetic tape device described with reference to FIGS. However, the groove width of the elongated groove portion 43 of the pedestal driving lever 40 shown in FIG. 5 is formed to be substantially the same as the diameter of the projection 35 of the cassette pedestal 32, and the projection 35 is fitted into the groove portion 43. (See FIGS. 6 to 8), and is different in that the conventional spring body 44 described in FIG. 12 is omitted. Further, it differs from the conventional one in that pressure receiving portions 45 and 46 protruding inward are provided at the free end of the cradle driving lever 40.

The other configuration is the same as that of the conventional magnetic tape device described with reference to FIGS. 11 to 16, so that the same or corresponding portions are denoted by the same reference numerals and detailed description thereof in order to avoid redundant description. Description of the structure is omitted.

Next, the operation will be described.

When the cassette receiving table 32 is located at the cassette insertion / removal position, the projection 35 is located on the reciprocating path A 1 as shown in FIG. When the box-shaped tape cassette 100 is inserted into the cassette receiving stand 32 waiting at the cassette insertion / removal position, the tape cassette 100 hits the stopper 37 while being mounted on the cassette receiving portion 32a, and 12 (A) and 12 (B), the tape cassette 100 is sandwiched between the cassette receiving portion 32a and the cassette pressing portion 32c, and is temporarily positioned with respect to the cassette receiving table 30.

When the pedestal driving lever 40 swings rearward from this state, the projection 35 fitted in the groove 45 of the pedestal driving lever 40 moves rearward on the reciprocating path A1. At the same time, when the cassette receiver 32 is retracted to the predetermined position shown in FIG. 7A, the pressure receiving portion 45 of the receiver drive lever 40 is moved to the upper end of the cassette receiver 32 as shown in FIGS. Ride on the side of the department and overlap. As a result, the cradle drive lever 40 is pushed outward and tilted, so that the synchronous shaft 41 is bent and deformed by the width a shown in FIG. Then, the elastically reset force of the synchronous shaft 41 deformed and deformed is applied to the tape cassette 100 via the pressure receiving portion 45 of the receiving table drive lever 40 and the cassette pressing section 32c of the cassette receiving table 32, so that the tape cassette 100 is released. It is clamped by the cassette receiving portion 32a and the cassette pressing portion 32c, and is reliably positioned with respect to the cassette receiving table 32. This eliminates the need to use the conventional leaf spring 34 described with reference to FIG.

When the cradle driving lever 40 is subsequently swung downward in the state described with reference to FIG. 7, the protrusion 35 enters the hoistway A2 from the reciprocating path A1 shown in FIG. 8A. Since the cassette receiver 32 moves down the hoistway A2, the cassette receiving table 32 moves along with the protrusion 35 along the reciprocating path A1 and the hoistway A2. When the projection 35 is pushed down the hoistway A2 by the operation of the pedestal driving lever 40, the cassette pedestal 32 is also lowered together with the projection 35. Then, during the lowering of the cassette receiving table 32, the positioning holes 110, 110 provided in the tape cassette 100 are fitted into the guide pins 24, 25 as shown in FIGS. Are seated on the seats 21 and 22 and the seat 23 described with reference to FIG.

On the other hand, the pedestal driving lever 40 is slightly swung downward even after the tape cassette 100 is seated on the receivers 21, 22 and 23. During the swinging movement of the pedestal driving lever 40 at this stage, the projection 35 is pressed down, so that the cassette pressing portion 32a abutting on the upper surface of the tape cassette 100 turns the upper surface of the tape cassette 100 outward. As a result, the cassette receiving table 32 is displaced outward in the left-right direction, and the side of the upper end of the cassette receiving table 32 presses the pressure receiving portion 46 of the receiving table drive lever 40 outward in the left-right direction by the displacing operation. The table drive lever 40 is tilted outward in the left-right direction. Further, the tilted receiving table drive lever 40 causes the synchronous shaft 41 to bend and deform against the elasticity as shown in FIG. 8B. b indicates the width of the bending deformation of the synchronous shaft 41 at this time.

As a result, at the stage after the tape cassette 100 is seated on the receivers 21, 22, 23, the downward swing operation for lowering the cassette receiver 32 by the receiver driving lever 40 is performed by the synchronous shaft 41. Allowed through bending deformation and the like. Further, at this stage, by the swing of the pedestal driving lever 40, the cassette pressing portion 32c presses the tape cassette 100 against the receiving seats 21, 22, 23 to position the tape cassette 100 at the reference position. This eliminates the need to use the conventional spring body 44 described with reference to FIG.

In this embodiment, when the cassette pressing portion 32c presses the tape cassette 100 against the receiving seats 21, 22, 23 to position the tape cassette 100 at the reference position, as shown in FIG. The pressing direction of the pressing portion 32c is a direction inclined inward in the left-right direction as shown by the arrow F. Since a pair of cassette receivers 32 are provided on the left and right, the cassette pressing portions 32c of both cassette receivers 32 press the tape cassette 100 in a direction inclined inward in the left-right direction. The force is obtained, and the tape cassette 100 is reliably positioned at the reference position. Y indicates the direction of the force by which the pedestal driving lever 40 presses the projection 35.

Although the loading operation until the tape cassette 100 inserted into the cassette receiving table 32 at the cassette removal position is positioned at the reference position has been described above, the tape cassette 100 positioned at the reference position is moved to the cassette removal position. The unloading action when unloading is as follows.

That is, when the pedestal drive lever 40 is swung in the opposite direction to that described above, and the protrusion 35 lifts the hoistway A 2, the cassette pedestal 32 is moved up accordingly, and the rise is caused. The tape cassette 100 sitting on the receivers 21, 22, and 23 on the way is received by the cassette receiver 32 a of the cassette receiver 32 and mounted. Then, as the projection 35 moves forward on the reciprocating path A1, the cassette receiving table 32 also moves forward to reach the cassette insertion / removal position, and the pressure receiving portions 46, 45 of the receiving table driving lever 40 receive the cassette receiving table. The synchronous shaft 41 returns to the initial state by its own elasticity away from the table 32.

According to this embodiment, since the receiving plate 31 employed in the conventional cassette holding frame can be omitted, the cost can be reduced accordingly.

The other configuration is the same as that of the conventional magnetic tape device described with reference to FIG. 11 and the like. Therefore, in order to avoid repetition of description, the same or corresponding portions are denoted by the same reference numerals, and details of the same portions are described. Detailed description of the structure is omitted.

[0039]

[Effect of the invention]

 As described above, according to the present invention, by utilizing the elasticity of the synchronous shaft, which is essential for synchronizing the left and right pedestal drive levers, the tape cassette can be positioned on the cassette pedestal, Since the tape cassette can be positioned at the reference position, it is possible to omit spring bodies and leaf springs used in the conventional magnetic tape device. As a result, the number of components can be reduced and the cost can be easily reduced. Even in such a case, there is an effect that the performance of the loading, unloading operation, recording / reproducing operation, etc. of the magnetic tape device is not impaired.

[Brief description of the drawings]

FIG. 1 is a front view illustratively showing a main part of an embodiment of a magnetic tape device according to the present invention.

FIG. 2 is a schematic side view of the cassette receiver as viewed from the outside in the left-right direction.

FIG. 3A is a schematic side view for explaining a relationship between a cassette receiving table and a cam groove, etc., and FIG.
FIG. 3 is a schematic cross-sectional view of a portion along line -IIIB.

FIG. 4A is a schematic cross-sectional view showing a mounting structure of a synchronous shaft and a pedestal driving lever, and FIG. 4B is an IVB-IVB of FIG.
It is a schematic sectional drawing of the part which follows a line.

5A is a schematic side view of the cradle driving lever viewed from the outside in the left-right direction, and FIG. 5B is a schematic cross-sectional view of a portion taken along line VB-VB in FIG.

FIG. 6A is a schematic partial side view of the state at the initial stage of tape cassette loading, as viewed from the inside in the left-right direction, and FIG. 6B is a schematic partial front view thereof.

FIG. 7A is a schematic partial side view of the intermediate state of tape cassette loading when viewed from the inside in the left-right direction, and FIG. 7B is a schematic partial front view thereof.

FIG. 8A is a schematic partial side view of the state at the final stage of loading the tape cassette as viewed from the left-right inner side, and FIG. 8B is a schematic partial front view thereof.

FIG. 9 is a schematic partial cross-sectional view showing a state where the tape cassette is seated on a receiver.

FIG. 10 is an operation explanatory view.

FIG. 11 is a front view illustratively showing a main part of a conventional magnetic tape device.

FIG. 12 is an explanatory view showing the operation of a conventional cradle drive lever and the like.

FIG. 13 is a schematic cross-sectional view of a portion along the line XIII-XIII in FIG.

FIG. 14 is a schematic cross-sectional view of a conventional magnetic tape device in a state where a cassette pressing portion presses a tape cassette.

FIG. 15 is an explanatory view showing the arrangement of seats.

FIG. 16 is a schematic cross-sectional view of a portion along the line XVI-XVI in FIG.

[Explanation of symbols]

 A Cassette loading / unloading path 21, 22, 23 Receiving seat 32 Cassette receiving table 32a Cassette receiving section 32c Cassette pressing section 35 Projection 40 Receiving table drive lever (receiving table pressing means) 41 Synchronous shaft 45, 46 Pressure receiving section 100 Tape cassette

Claims (5)

[Utility model registration claims] 1. A pair of left and right cassette receiving trays moving on a cassette loading / unloading path extending between a cassette loading / unloading position and a cassette transfer position lower than the cassette loading / unloading position.
A cassette receiving portion on which the tape cassette is mounted, and a cassette pressing portion provided integrally with the cassette receiving portion so as to face the tape cassette mounted on the cassette receiving portion from above; And a pair of left and right receiving table pressing means for lowering the cassette receiving table from above the cassette receiving position toward the cassette receiving position, and the pair of left and right receiving tables are lowered toward the cassette receiving position. A seat for seating the tape cassettes on those cassette receivers on the way is provided, and the pedestal press-down means are connected by a synchronous shaft for synchronizing them, and the tape cassette seated on the seat is The tape cassette is positioned at the reference position by the downward pressing of the cassette pressing portion interlocking with the lowering operation of the cassette receiving table. In the magnetic tape device, the pair of left and right pedestal pressing means is engaged with a projection provided on the cassette pedestal and swings downward with a fixed position as a fulcrum, thereby pressing down the projection. A cassette drive lever for lowering the cassette receiver from above the cassette transfer position toward the cassette transfer position. The cassette receiver into which the tape cassette has been inserted is located at a predetermined position behind the cassette insertion / removal position. When the cassette is retracted, the pressure receiving portion provided at the free end of the pedestal driving lever overlaps the upper end of the cassette pedestal, and the pedestal driving lever is tilted outward in the left-right direction. Are bent and deformed against elasticity, and the elastic return force of the bent and deformed synchronous shaft is applied to the pressure receiving portion of the cradle driving lever and the pressure receiving portion. The cassette receiving part of the cassette receiving part is joined to the tape cassette via the cassette pressing part. In order to lower the cassette receiving part by the receiving part driving lever at a stage after the tape cassette is seated on the receiving part. The downward swinging motion is caused by the sliding operation of the cassette pressing portion with respect to the tape cassette, the displacement operation of the cassette receiving tray to the right and left outward due to the sliding motion of the cassette pressing portion, and the displacement of the cassette receiving tray. By the operation, the upper end of the cassette receiving tray presses the pressure receiving portion of the receiving tray driving lever outward in the left-right direction to tilt the receiving tray driving lever, and the tilted receiving tray driving lever elastically resilients the synchronous shaft. A magnetic tape device, wherein the magnetic tape device is allowed to bend and deform in response to the pressure. 2. A pair of left and right cassette receiving trays for moving a cassette loading / unloading path extending between a cassette loading / unloading position and a cassette transfer position lower than the cassette loading / unloading position.
A cassette receiving portion on which the tape cassette is mounted, and a cassette pressing portion provided integrally with the cassette receiving portion so as to face the tape cassette mounted on the cassette receiving portion from above; And a pair of left and right receiving table pressing means for lowering the cassette receiving table from above the cassette receiving position toward the cassette receiving position, and the pair of left and right receiving tables are lowered toward the cassette receiving position. A seat for seating the tape cassettes on those cassette receivers on the way is provided, and the pedestal press-down means are connected by a synchronous shaft for synchronizing them, and the tape cassette seated on the seat is The tape cassette is positioned at the reference position by the downward pressing of the cassette pressing portion interlocking with the lowering operation of the cassette receiving table. In the magnetic tape device, both ends of the synchronous shaft are formed by elastic rods respectively fixed to the pair of left and right receiving stand pressing means, and the tape cassette is attached to the receiving seat. By the operation for lowering the cassette cradle by the cradle pressing means at the stage after sitting, the cassette cradle presses the cradle pressing means outward in the left-right direction, and the cradle lowers. A magnetic tape device characterized in that the means tilts while bending and deforming the synchronous shaft. 3. An operation for lowering the cassette receiving table by the receiving table pressing means at a stage after the tape cassette is seated on the receiving table is a sliding operation of the cassette pressing section with respect to the tape cassette. And a displacement operation of the cassette receiver to the left and right outward due to the sliding operation of the cassette pressing portion, and the displacement of the cassette receiver causes the cassette receiver to push the pedestal pressing means outward to the left and right. An operation of pressing and tilting, and an operation of tilting the cradle pressing means to bend and deform the synchronous shaft against elasticity,
3. The magnetic tape device according to claim 2, wherein the magnetic tape device is configured to be permitted via a magnetic tape. 4. The cassette receiving platform pressing means engages with a projection provided on the cassette receiving platform and swings downward with a fixed position as a fulcrum, thereby pushing down the projection and moving the cassette receiving platform into a cassette. A receiving table drive lever for lowering the transfer table from above the transfer position toward the cassette transfer position, and a free end portion of the support table drive lever provided with a pressure receiving section pressed by the cassette support table displaced outward in the left-right direction. The magnetic tape device according to claim 3, wherein 5. When the cassette receiver into which the tape cassette is inserted is drawn from a cassette insertion / removal position to a predetermined position behind the insertion / removal position, the pressure receiving portion overlaps the cassette receiver and the tray driving lever Are tilted outward in the left-right direction, and the tilting of the pedestal driving lever causes the synchronous shaft to bend and deform against the elasticity. The magnetic tape device according to claim 4, wherein the magnetic tape device is configured to be applied to a tape cassette via the pressure receiving portion of a lever and the cassette pressing portion of the cassette receiving stand.