JPH0430687Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a recording and reproducing device, and more particularly to a recording and reproducing device equipped with a rotating head cylinder in which a tape can be slidably contacted.

[Background of the idea]

Conventionally, recording and reproducing apparatuses to which a tape cassette is attached record and reproduce tapes using analog signals. By the way, recently, from the viewpoint of downsizing of tape cassettes and high-density recording, DAT (Digital Audio Tape)
2. Description of the Related Art There has begun to be a desire to record and reproduce audio using digital signals, and research and development is progressing in various places in response to this demand. However, despite such demands, a desirable recording/playback device for DAT has not yet been proposed.

[Purpose of invention]

The present invention has been made in view of the actual situation in the prior art, and its purpose is to provide a recording/playback device that can record and play back audio using digital signals.

[Summary of the idea]

To achieve this object, the present invention includes a rotating head cylinder on which the tape in the tape cassette can slide, a holder capable of holding the tape cassette, and a rotary head cylinder movably disposed within the holder and capable of holding the tape cassette. A pair of arms that can hold the
and arm driving means for pulling these arms into the holder and pushing the arms outside the holder, the arm driving means being movable to a receiving plate provided above the holder. It has a pair of levers attached thereto, one end of these levers is pivotally connected to the receiving plate of the holder, each of the arms is rotatably connected to the other end of both the levers, and each of the arms is connected to the other end of the lever. Guiding grooves are provided along the sides of the holder, and each groove is configured to open outward on the tape cassette insertion side.

[Embodiments of the invention] Hereinafter, embodiments of the invention will be described based on the drawings. The main structure of this embodiment consists of a tape cassette attachment/detachment mechanism and a loading mechanism. First, the tape cassette attachment/detachment mechanism provided in this embodiment will be described with reference to FIGS. 1 to 5 (a) and 5(b).

Fig. 1 is a perspective view showing only the tape cassette attaching/detaching mechanism, Fig. 2 is a front view also showing the loading mechanism described later, Fig. 3 is a side view of the main part showing the state before the holder is lowered, Fig. 4 5A is a side view of the main part showing the state after the holder is lowered, FIG.
FIG. b is a plan view of the main part showing the arm portion when the tape cassette is attached.

In FIGS. 1 and 2, 1 is a sub-chassis that holds the entire tape cassette attaching/detaching mechanism, and 2 is a chassis that supports the sub-chassis 1. 3 and 4 are brackets fixed to the sub-chassis 1, 5 indicated by a chain double-dashed line is a tape cassette, and 6 is a tape cassette 5.
This holder 6 is arranged between the brackets 3 and 4 mentioned above. Note that a digital audio tape 5a is stored in the tape cassette 5. Reference numeral 7 denotes a receiving plate disposed above the holder 6, which is rotatably supported by the brackets 3 and 4 by support shafts 8 and 9. This receiving plate 7
has a substantially straight elongated hole 7a in the center and an arcuate elongated hole 7b in the side.

10 and 11 are support shafts that support the holder 6 and the receiving plate 7 in a relatively rotatable manner; 12 is a support shaft provided in the holder 6 portion below the support shaft 10; and 13 is a support shaft located below the support shaft 8. The support shaft 14 provided in the brat 3 portion is connected to the support shaft 12 and the support shaft 13 as shown in FIGS. 3 and 4.
This is a link that connects the . The link 14, holder 6, and bracket 3 are rotatable relative to each other.

A slide plate 15 is arranged in parallel with the bracket 3 and is slidable with respect to the sub-chassis 1. This slide plate 15 has a cam portion 1 that is engaged with a pin 16 provided on the side surface of the holder 6 located on the bracket 3 side.
7, elongated holes 20 and 21 in which the guide pins 18 and 19 provided on the bracket 3 are arranged so as to be relatively movable, a rack 22, and a cavity 23.
have. Note that the above-mentioned cam portion 17 is located at the upper portion 1 located approximately parallel to the sub-chassis 1.
7a, a lower portion 17b, and an inclined portion 17c located at the boundary between the upper portion 17a and the lower portion 17b. 24 is a gear that engages with the rack 22 of the slide plate 15, 25 is a motor that drives this gear 24, and the gear 24 is rotatably supported by, for example, a support member (not shown).
The motor 25 is attached to the subchassis 1.

Further, 26 is a lever attached to the surface of the receiving plate 7;
Reference numeral 27 denotes a lever attached to the back surface of the receiving plate 7, which is rotatable in parallel to the front or back surface of the receiving plate 7 about support shafts 28 and 29 fixed to the receiving plate 7, respectively. Note that one end 26a of the lever 26 projects outward from the gap 23 of the slide plate 15, and is capable of engaging with a side end 23a of the gap 23. Reference numeral 30 denotes a pin fixed approximately at the center of the lever 27, and this pin 30 is inserted into the elongated hole 7a of the receiving plate 7.
The lever 26 is arranged so as to protrude upward from the groove 31 formed in the substantially central portion of the lever 26. Reference numeral 32 designates a toggle spring disposed on, for example, the surface of the receiving plate 7, one end of which is engaged with a support shaft 33 fixed to the lever 26, and the other end of which is engaged with a support shaft 34 fixed to the receiving plate 7. .

In addition, 35 shown in FIGS. 2 and 5 a and b,
Reference numeral 36 denotes an arm that is rotatably mounted on the levers 27 and 26, respectively, is movably arranged inside the holder 6, and is capable of holding the tape cassette 5. 37 and 38 are levers 27 and 2, respectively.
6 and the arms 35 and 36.
In addition, as shown in FIGS. 5a and 5b, the arms 35 and 3
6 have claws 41 and 4 that can be engaged with grooves 39 and 40 formed on the sides of the tape cassette 5.
2, and pins 45 and 46 that engage with grooves 43 and 44 provided on both sides of the holder 6. Also,
Ends 43a and 44a of the grooves 43 and 44 are formed to open outward. Further, the groove 39,
Distance to 40 and base 35 of arms 35, 36
The distances from a, 36a to the claws 41, 42 are set to be approximately equal.

Note that 47 shown in FIGS. 1, 3, and 4 presses and holds the tape cassette 5 housed in the holder 6, and 48 shown in FIG. The engaged spring 48 urges the receiving plate 7 in the direction of arrow 49 in FIG.

Next, the loading mechanism provided in this embodiment will be described with reference to FIGS. 6 to 8.

FIG. 6 is a plan view showing the state before loading starts, FIG. 7 is a front view of FIG. 6, and FIG. 8 is a plan view showing the state after loading.

In these figures, 1 and 2 are the aforementioned sub-chassis and chassis. Reference numeral 50 denotes a rotary head cylinder to which a magnetic head (not particularly shown) is attached, and consists of a rotatable upper part and a non-rotatable lower part, the lower part of which is fixed to the chassis 2. Reference numerals 51 and 52 denote a pair of linear guide holes formed in the sub-chassis 1, for example, forming an inverted V-shape, the tip portions 51a and 52a of which are housed in, for example, the aforementioned holder 6, as shown in FIG. It is positioned slightly beyond an imaginary line 53 passing through the diameter of the rotary head cylinder 50, which is parallel to the tip end 5a of the tape cassette 5.

Moving bodies 54 and 55 are movable along the guide holes 51 and 52, and move the tape 5b in the tape cassette 5 toward and away from the rotary head cylinder 50. Mobile body 54
For example, the base 54 is disposed on the subchassis 1.
a, fixedly installed below this base 54a, with guide hole 5
A pair of shaft portions 54b, 5 movably housed in
4c and a tape 5 fixed above the base 54a.
It is formed by a guide post 54d and an inclined post 54e that guide the shaft 54c, and a support portion 54f formed below the shaft portion 54c. Similarly,
The moving body 55 also includes, for example, a base portion 55a, a shaft portion 55b,
55c, guide post 55d, and inclined post 55
e and a support portion 54f.

Reference numerals 56 and 57 refer to connection members whose one ends are relatively rotatably connected to, for example, the support portions 54f and 55f of the movable bodies 54 and 55, and 58 refer to connection members whose other ends are relatively rotatable. A rotating body rotatably connected to, for example, a circular body. The rotating body 58 has a gear portion 58a on its circumferential side and is rotatable about a support shaft 59 fixed to the chassis 2, for example. Moreover, the other ends of the above-mentioned connecting members 56 and 57 are
They are connected by support shafts 60 and 61 to portions near the peripheral side of the rotating body 58 at a predetermined distance from each other and at different heights so that the connecting members 56 and 57 do not interfere with each other.

The support shafts 60 and 61 are movable as the rotating body 58 rotates, for example, from the state shown in FIG. 6 to the state shown in FIG. 8, that is, from the state shown in FIG. It is possible to move to a symmetrical position with respect to a support shaft 59 located at the center of. Further, the support shaft 60 is connected to the movable body 5 as shown in FIG.
The position of the support shaft 61 is set so as not to cross the imaginary line 60a connecting the support shaft 59 of the rotating body 58 and the shaft portion 54c of the moving body 54 when the support shaft 4 moves. When the movable body 55 moves to
The position is set so as to cross the virtual line 61a connecting the two.

A gear 62 has a small-diameter gear portion 62a that engages with the gear portion 58a of the rotating body 58, and a large-diameter gear portion 62b disposed, for example, below the gear portion 62a. It is now possible to rotate. 64 is a motor that rotates this gear 62;
For example, it is attached to the chassis 2.

Note that 65 and 66 indicated by two-dot chain lines are reels for supplying or winding up the tape 5b in the tape cassette 5, and reel driving means for rotating these reels 65 and 66 are not shown.

Next, the operation of the embodiment configured as described above will be explained.

First, the operation of attaching the tape cassette 5 to the holder 6 and the loading operation will be described.

Before the tape cassette is installed, as shown in FIG. It is arranged in an open state to allow insertion of the tape cassette 5. Further, the pin 30 connecting the lever 26 and the lever 27 is located at the end 7c shown in FIG. 1 of the elongated hole 7a formed in the center of the receiving plate 7.
Along with this, the end 26a of the lever 26 is connected to the cavity 2.
It is located at a sufficient distance from the side edge 23a of 3. Also, a pin 16 provided on the side of the holder 6
is the upper portion 17 of the cam portion 17 of the slide plate 15
It is located at a.

In this state, when the tape cassette 5 is inserted into the holder 6, the tape cassette 5 is pressed against the bottom of the holder 6 by the pressing spring 47.
The tip 5a is the base 35 of the arms 35, 36.
a, 36a, and the claws 4 of the arms 35, 36 are placed in the grooves 39, 40 of the tape cassette 5.
1 and 42 are engaged, whereby the tape cassette 5 is held between the arms 35 and 36. Then, when the tape cassette 5 is pushed further, the arm 35,
36 pins 45, 46 are guided in the grooves 43, 44, these arms 35, 36 move inward of the holder 6, and as the arms 35, 36 move, the supports shown in FIG. When the shafts 28, 33, 34 are aligned in a straight line at the "dead center" of the toggle spring 32, the elastic force of the toggle spring 32 causes the levers 26, 26 to
7 rotates around spindles 28 and 29, and arm 3
5, 36, that is, the tape cassette 5 is forcibly drawn into the holder 6. And lever 2
When the pin 30 connecting the tape cassettes 6 and 27 comes into contact with the tip of the elongated hole 7a, the levers 26 and 27 stop rotating, and the movement of the arms 35 and 36, that is, the movement of the tape cassette 5, stops.

Note that the above-described rotational movement of the levers 26 and 27 is permitted by the pin 30 moving within the groove 31 provided in the lever 26. Further, at this time, the positional relationship between the slide plate 15 and the end 26a is set so that the end 26a of the lever 26 does not come into contact with the side end 23a of the gap 23 of the slide plate 15, for example. In this way, the tape cassette 5 is
As shown in Figure b, Figure 3, and Figures 1 and 2,
It is positioned at a predetermined position on the reels 65 and 66.

In this state, when a drive signal from a control device (not shown) is sent to the motor 25, the motor 25
rotates, which causes the gear 24 to rotate, and the slide plate 1 is moved through the rack 22 that engages with the gear 24.
5 moves in the direction of arrow 67 in FIG. This causes the pin 16 of the holder 6 to move relatively from the upper portion 17a of the cam portion 17 of the slide plate 15 to the inclined portion 17c, and further from the inclined portion 17c to the lower portion 17b. Due to this movement of the pin 16 and the force of the spring 48 shown in FIG. It rotates in the direction of the same arrow 49 around the support shaft 13 fixed to the support shaft 8,
The rectangle surrounded by 10, 12, and 13 changes its form while always maintaining the shape of a parallelogram, and as a result, as shown in FIGS. 4 and 7, the holder 6 or the tape cassette 5 is held horizontal While being held in this state, it descends onto the reels 65 and 66, and is positioned at a position where it can perform a loading operation.

Note that after this positioning operation is completed, the rotation of the motor 25 is also stopped. Further, after this positioning operation is completed, as shown in FIG.
The guide posts 54d, 55d and the inclined posts 54e, 55e are located within the notch 5c formed in the tape cassette 5, thereby allowing the tape 5b in the tape cassette 5 to be pulled out.

In this state, when a drive signal from a control device (not shown) is sent to the motor 64 shown in FIGS. 6 to 8, the motor 64 rotates, thereby rotating the gear 62 via the gear portion 62b. The rotating body 58 rotates about the support shaft 59 in the direction of arrow 68 in FIG. 6 via the gear portion 62a of the gear 62 and the gear portion 53a that engages with the gear portion 62a. The support shafts 60 and 61 rotate integrally with the rotation of the rotating body 58, and the connecting members 56 and 57 move accordingly.
The movable bodies 54, 55 connected to one ends of these connecting members 56, 57 are connected to the respective shaft portions 54b,
54c, 55b, and 55c are guided by the guide holes 51 and 52, respectively, so that, for example, the sixth
The arrows 69 and 70 in FIG.
move in the direction.

By the movement of these movable bodies 54, 55, guide posts 54d, 55d, inclined posts 54e,
55e engages with the tape 5b in the tape cassette 5, and the tape 5b is pulled out from the tape cassette 5. When the rotating body 58 rotates approximately half a rotation, the shaft portions 54b, 55b of the movable bodies 54, 55 are connected to the tips 51 of the elongated holes 51, 52, as shown in FIG.
a, 52a, thereby moving the moving body 54,
The movement of the tape 55 is stopped, the tape 5b is circumferentially surrounded by the rotating head cylinder 50, and the loading operation is completed. At this time, the tape 5b is circumferentially wrapped around the rotary head cylinder 50 so that the winding angle is approximately 90 degrees, for example.

Note that after the movable bodies 54 and 55 stop moving, the rotation of the motor 64 also stops. Furthermore, when the movable bodies 54 and 55 are stopped, as mentioned above,
The support shaft 60 is located at a position that does not exceed an imaginary line 60a connecting the support shaft 59 of the rotating body 58 and the shaft portion 54c of the movable body 54, and the support shaft 61 is located at a position that does not exceed the imaginary line 60a connecting the support shaft 59 of the rotating body 58 and the shaft portion 55c of the movable body 55. Since the movable bodies 54 and 55 are at a position beyond the connecting imaginary line 61a, they are in a so-called locked state, that is, the rotational force of the rotary body 58 in the direction of arrow 68 is further applied to the movable body 54 via the connecting members 56 and 57. , 55, these moving bodies 54, 55 do not shift in position and are reliably positioned at positions where recording and reproducing operations can be performed.

By driving a reel driving means (not shown) and rotating the rotary head cylinder 50, the tape 5b runs while slidingly contacting the rotary head cylinder 50, and desired audio recording and reproduction operations are performed.

Next, the loading release operation and the ejecting operation of the tape cassette 5 will be described.

The motor 64 is rotated in the opposite direction to that described above, the rotating body 58 is rotated in the direction of the arrow 69 in FIG. 8 via the gear 62, and the reel 66 shown in FIG. 5b is rotated so as to be wound up, the movable bodies 54, 55 are guided to the guide holes 51, 52 via the support shafts 60, 61 and the connecting members 56, 57, and are guided by the arrows 71, 7 in FIG.
2, and its shaft portions 54c, 55c
The movement of the guide holes 51 and 52 is stopped by the ends of the guide holes 51 and 52, and the state shown in FIG. 6 is reached.
Note that after the moving bodies 54 and 55 stop moving, the motor 64
rotation stops.

In this state, the motor 25 shown in FIG.
2 through the slide plate 15 in the direction of arrow 73 in FIG.
When the pin 16 is moved in the direction, the pin 16, which was previously located in the lower part 17b of the cam part 17,
c to the upper portion 17a, thereby causing the receiving plate 7 and the link 14 to rotate in the direction of the arrow 74 in FIG. 4 against the force of the spring 48 shown in FIG. rises away from the reels 65 and 66, reaching the state shown in FIG. Then, when the slide plate 15 further moves in the direction of the arrow 73 in FIG. It rotates about shaft 28 in the direction of arrow 75 in FIG. 1 against the force of toggle spring 32.

As the lever 26 rotates, the pin 30 moves within the elongated hole 7a of the receiving plate 7, the lever 27 rotates, and the arms 35 and 36 move through the support shafts 37 and 38 as shown in FIG. 5b. Move in the directions of arrows 76 and 77. When the above-mentioned dead center of the toggle spring 32 is exceeded, the lever 26 is moved by the force of this toggle spring 32.
is forcibly rotated, and in conjunction with this lever 26, the pin 30, lever 27, support shafts 37, 38, and arm 3
5 and 36 move or rotate instantaneously, thereby ejecting the tape cassette 5 held by the arms 35 and 36 to the outside of the holder 6, and the ejecting operation is completed. In addition, lever 2
The rotation of the arms 6 and 27 is stopped when the pin 30 is locked in the end portion 7c of the elongated hole 7a of the receiving plate 7, and at this time the arms 35 and 36 are in an open state as shown in FIG. 5a. .

Further, after the ejection operation is completed, the motor 25 is reversed and stopped after a predetermined period of time by a drive signal from a control device (not shown).
It moves slightly in the direction of arrow 67 in the figure. As a result, the side end 23a of the slide plate 15 and the end portion 26a of the lever 26 are separated from each other to the extent that the lever 26 can be rotated without any trouble.

This operation allows the insertion operation of the tape cassette 5 to be performed at the next opportunity. That is, if the rotation of the motor 25 is temporarily stopped at the end of the eject operation as described above, when the tape cassette 5 is to be inserted into the holder 6 again, the end 26a of the lever 26 will not touch the side end of the slide plate 15. Since the lever 26 remains locked to the tape cassette 23a, the lever 26 does not move, resulting in inconvenience in inserting the tape cassette 5.

In the embodiment configured in this way, a tape cassette attaching/detaching mechanism having a pair of movable arms 35, 36 capable of holding the tape cassette 5 in the holder 6, one rotating body 58 and A pair of connecting members 56 connected to this rotating body 58,
Since the loading mechanism 57 is configured to operate sequentially, the tape cassette 5 can be reliably positioned at the loading start position, and the tape 5b in the tape cassette 5 can be reliably transferred to the rotating head cylinder 50. It can be brought into sliding contact with the device, making it possible to record and play back audio using digital signals.

Further, since the arms 35 and 36 are movably arranged within the holder 6, the receiving plate 7 etc. do not need to be made larger than necessary, and the device can be made smaller.

A pair of levers 27 and 26, which are movably attached to the front and back surfaces of the receiving plate 7 and connected to arms 35 and 36, are used to pull the tape cassette 5 into the holder 6 or to remove the tape cassette 5 from the holder 6. Since the liquid is discharged in the opposite direction, the space required for driving the arms 35 and 36 can be minimized, and the apparatus can be made more compact from another point of view.

In addition, in the above embodiment, one rotating body 5
8 via the connecting members 56 and 57 to the movable body 5
Since 4 and 55 are moved together, the loading mechanism is simple, the number of parts can be reduced, and manufacturing costs can be reduced. Further, since the movable bodies 54 and 55 are moved by one rotating body 58, there is no variation in the amount of movement between the movable bodies 54 and 55.

In the above embodiment, the guide holes 51 and 52 for guiding the movable bodies 54 and 56 were provided in the subchassis 1, but the shapes of the movable bodies 54 and 55 and the movable body 5
4, 55 and the guide holes 51, 52 are not limited to this, for example, the position of the chassis 2 is brought closer to the sub chassis 1, and one guide hole 51
may be formed in the chassis 2, and the other guide hole 52 may be formed in the sub-chassis 1.

Further, in the above embodiment, the rotating body 58 is formed into a circular shape, but the present invention is not limited to this, and may be formed into a shape with a portion cut away.

Further, in the above embodiment, the rotating body 58 is arranged to be located between the sub-chassis 2 and the chassis 1, but the present invention is not limited to this, and the rotating body 58 is arranged at a position approximately at the same height as the chassis 1 or the sub-chassis 2. It may be arranged.

Further, in the above embodiment, the connecting members 56 and 57 are both connected to one surface of the rotating body 58, but the present invention is not limited to this. For example, the connecting member 56 is connected to the back side of the rotating body 58. and connecting member 5
7 may be connected to the surface side of the rotating body 58.

Further, in the above embodiment, both the connecting members 56 and 57 are made of a single member, but the present invention is not limited to this, and these connecting members 56 and 57
may each be constructed from a plurality of members.

Further, in the above embodiment, the motor 25 that drives the slide plate 15 is mounted on the sub chassis 2, and the motor 64 that drives the rotary body 58 is mounted on the chassis 1, but the present invention is not limited to this, and the present invention is not limited to this. Both motors 25 and 64 may be mounted on the sub-chassis 2 or the chassis 1.

[Effect of idea]

As explained above, according to the present invention, the tape cassette can be reliably positioned at a predetermined position before proceeding to the loading operation or at a predetermined position before proceeding to the ejecting operation. Also, loading can be canceled with high precision, and audio can be recorded and played back using digital signals.

Also, since both arms are set to be open when the arm is on the tape cassette insertion side,
When inserting a tape cassette, the tape cassette and arm slide and do not create friction, allowing the tape cassette to be inserted smoothly, and the arm is simply rotatably connected to the lever. For example, there is no need to open and close the arm against elastic force, and the arm can be easily opened and closed with a small force.

[Brief explanation of the drawing]

1 to 5 a and b are explanatory diagrams mainly showing the tape cassette attaching/detaching mechanism of an embodiment of the recording/reproducing apparatus of the present invention, and FIG. 1 is a perspective view showing only the tape cassette attaching/detaching mechanism. , Fig. 2 is a front view also showing the loading mechanism, Fig. 3 is a side view of the main part showing the state before the holder is lowered, Fig. 4 is a side view of the main part showing the state after the holder is lowered, and Fig. 5 FIG. 5a is a plan view of the main part showing the arm part before the tape cassette is installed, FIG. 5b is a plan view of the main part showing the arm part when the tape cassette is installed, and FIGS. FIG. 6 is a plan view showing a state before loading starts, FIG. 7 is a front view of FIG. 6, and FIG. 8 shows a state after loading. FIG. 1... Sub-shape, 2... Seam, 3,4
...Bracket, 5...Tape cassette, 5b...
...tape, 6... holder, 7... receiving plate, 7a, 7
b...Long hole, 8, 9, 10, 11, 12, 13,
28, 29, 33, 34, 37, 38, 59, 6
0,61,63...Spindle, 14...Link, 15
...Slide plate, 16, 30, 45, 46...Pin, 17...Cam part, 22...Rack, 23...
Gap portion, 23a... side end, 24, 62... gear,
25, 64... motor, 26, 27... lever,
26a... end, 31, 39, 40, 43, 44
... Groove, 32 ... Toggle spring, 35, 36 ... Arm, 48 ... Spring, 50 ... Rotating head cylinder, 51, 52 ... Guide hole, 54, 55 ... Moving body, 54d, 55d ... Guide post, 54e,
55e... Inclined post, 56, 57... Connection member, 58... Rotating body, 58a, 62a, 62b...
...Gear part.

Claims (1)

[Claims for Utility Model Registration] A rotary head cylinder on which the tape in a tape cassette can slide, a holder capable of holding the tape cassette, and a holder movably disposed within the holder and capable of holding the tape cassette. a pair of arms, and arm driving means for drawing the arms into the holder and pushing the arms out of the holder, the arm driving means driving a receiver provided above the holder. It has a pair of levers movably attached to the plate, one end of these levers is pivotally connected to the receiving plate of the holder, and each arm is rotatably connected to the other end of both the levers. , a recording device characterized in that grooves for guiding each of the arms are provided along the sides of the holder, and each groove is formed in a shape that opens outward on the insertion side of the tape cassette. playback device.