JPS59112459A - magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To realize a cassette holder of a complete correct standing transparent type by providing a spring for giving a force in the direction for contacting with a cassette centering around a cassette guide shaft, on a cassette guide, so that the cassette guide does not project from the front face of a device body in the first state. CONSTITUTION:A cassette guide 49 is rotatable centering around a cassette guide shaft 49a, energized clockwise by a coil spring 50, and at the time of a cassette loading motion, the cassette guide 49 contacts by pressing to a lower end part 51 of the body front face by a force of the coil spring 50, but when a cassette holder 16 shifts a cassette 15 from the first state that it is inserted, and displaces it to the second state, the cassette guide 49 follows it and contacts with around the rear end of the cassette 15. As a result, it starts to rotate counterclockwise centering around the cassette guide shaft 49a, and in a state that the cassette loading motion is completed, the cassette 15 is supported from the lower part by the cassette guide 49.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording/reproducing apparatus having a cassette holder that allows a cassette to be seen through the cassette in an upright position.

Conventional structure and problems Conventionally, for example, VH8 system VTIt cassette,
Using a cassette having an opening for tape loading and a guard panel for shielding the opening and designed to be inserted into a magnetic recording/reproducing device through said opening, a deck is provided in which the cassette is placed in an upright position. In most designs, a cassette holder like a so-called kangal pocket was arranged as shown in FIG. In this case, for example, in the VH8 type cassette as mentioned above, the letters, designs, labels, etc. written on the cassette are all upside down, which not only makes it difficult to see, but also significantly lowers the quality of the product. In FIG. 1, (1) is the main body of the magnetic recording/reproducing apparatus, (2) is a cassette holder, and the cassette (3), which can be seen through the transparent part in an ejected state, can now be taken out freely.

(4) is a push button for operation, and (5) is a handle rotatable around a fulcrum (5a).

OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned drawbacks of the conventional art, and aims to provide a completely erect transparent type cassette holder even when using, for example, a VH8 type cassette as described above.

Structure of the Invention In order to achieve the above object, the magnetic recording/reproducing device of the present invention has an opening for storing a magnetic tape therein and pulling out the magnetic tape, and a guard panel for shielding the opening. , a magnetic recording and reproducing device using a cassette made to be inserted into the magnetic recording and reproducing device from the guard panel side, wherein the cassette is in a first state in which the front side thereof is slightly raised from a horizontal state; A cassette holder is provided for opening the guard panel and shifting it to a second state in which the opening is located at the top, and the cassette holder is slid so as to perform recording and reproduction of signals in this second state, and the cassette holder is moved from the first state to the second state. A cassette guide is provided that contacts the cassette and guides the rear end surface of the cassette when transitioning to the state, and is rotatable about the cassette guide shaft, and the cassette guide is provided with a direction in which the cassette guide contacts the cassette about the cassette guide shaft. The cassette guide is provided with a spring for applying force to prevent the cassette guide from protruding from the front surface of the apparatus main body in the first state.

DESCRIPTION OF EMBODIMENTS Hereinafter, one embodiment of the present invention will be described with reference to the drawings (Figs. 2 to 8).
The explanation will be based on Figure).

In FIG. 2, the deck OI has a power switch 0 and an eject switch 04 on the right side when viewed from the front, and a cassette aθ which can be seen standing upright inside the cassette holder QQ is set in a predetermined position. Furthermore, a tape counter (II) and operation push buttons are located on the left side of the deck a0 when viewed from the front. FIG. 8 shows the arrangement of the main parts viewed from the front. In the state shown in Fig. 8, the magnetic tape (9) has been pulled out from the cassette (to), and the supply reel (15
From a) to the guide post), erase head αη, rotating head cylinder (to), inclined guide post 0, roller guide post 翰, audio control head (c) on head base (21B), to roller guide post) , reaches the inclined guide post (e), passes through the driving camp stan), passes through the pinch roller (c), passes through the guide post IA (support), and is wound onto the take-up reel (15b). Magnetic tape (9) pulled out from the cassette (G)
The rotary head cylinder (to) is installed inclined by approximately the lead angle so that it can be wound around the rotary head cylinder QlG while remaining approximately horizontal. The guide post 9I9) is connected to the opening (15c) (1) of the cassette aυ before pulling out the magnetic tape (9) from the cassette aO.
5d). The loading ring (b) runs from the rotating head cylinder (to) to the magnetic tape (9).
The ring is rotatably arranged with an inclination of about twice the lead angle near where it separates, and is connected to a ring drive means (not shown) such as a DC motor. The magnetic tape (9) coming out of the rotating head cylinder (to) is wrapped around the fixed inclined guide post 0, and with the inclination slightly corrected, it is turned in a U-turn by the roller guide post (e) on the loading ring (2). and comes into contact with the audio control head (c) installed on the head base (2ta), which is slightly inclined from the installation surface of the cassette Q0.

The magnetic tape (9) then wrapped around the loading ring) and the roller guide post connected by a coupling means (not shown) is attached to the fixed inclined guide post (2).
), the height, direction, twist, etc. are corrected so that it can be inserted almost horizontally into the cassette (end), and the pinch roller (hat) is connected by a loading ring (support) and a connecting means (not shown). ), this magnetic tape (9) runs through a capstan (A) that stands approximately perpendicular to the installation surface of the cassette (G), then passes through guide posts (E) and (C), and is pulled out horizontally from the cassette. It is a tape path that winds the tape horizontally into a cassette.

Next, the loading operation will be described. Cassette 01?
When the is in place, the guide post (H)
(to) have entered the openings (15c) and (15d) of the cassette O8. When a loading instruction is given, the guide post (to) follows the guide groove (not shown) to a predetermined position on the left side of Figure 8, and the guide post (to) follows the guide groove (not shown) to the guide post (to). e) reaches the specified position on the right side. After that, the loading ring) is rotated counterclockwise, and the tip is first tapered and the roller guide post (E) is rotated counterclockwise.
The magnetic tape mainly enters the loop formed by the guide post (A) from below, and then the roller guide post (support) and the pinch roller (C) enter the loop. When loading is completed, the roller guide post holder is fixed on the loading ring as shown in Figure 8, and the roller guide post is connected to the loading ring by a connecting means (not shown). It is positioned by a positioning means (not shown) outside the outer periphery of the loading ring. The pinch roller (c) is provided on a lever (not shown) that is rotatable around a fulcrum pin (not shown) on the loading ring, and the pinch roller (c) is provided on a lever (not shown) that is rotatable around a fulcrum pin (not shown) on the loading ring.
The pinch roller (C) and the capstan (C) are pressed together, and this series of operations makes it possible to record and reproduce signals.

Next, the configuration of the cassette loading device will be described based on FIG. FIG. 4 shows the cassette loading device from the side. In this state, the user can freely insert and remove the cassette 00. The guide base (80a) is attached to the cassette loading motor via the mounting base (80a). This guide base (A) has a drive gear 0 that can freely rotate around the support shaft (ala), a drive gear that can freely rotate around the support shaft (82B), and a drive gear that can freely rotate around the support shaft (aaa). A group of gears such as cam gears are arranged.

These gear groups are the cassette loading motor (7)
The worm gear (b) attached to the rotating shaft of the worm gear (b) meshes with the worm wheel part of the drive gear 0υ, and the spur gear part of the drive gear 01+ and the drive gear) are connected, and the drive gear (a) and the cam gear are connected. It becomes. (to) is the drive lever.

This drive lever (to) is rotatable around the support shaft (85a), and the drive pin (a5b) installed in the drive lever (to) is rotatable around the support shaft (88a). It fits into the cam groove (aab) formed in the cam gear. This cam groove (88b) is formed within an effective rotation angle range of approximately 150°, and is located at the portion closest to the rotation center of the cam gear (in Fig. 4).
) is inserted into the cam gear, and if the cam gear) is rotated clockwise, the cam groove (aab) will remain in contact with the support shaft (88) for a while.
They are located on a concentric circle centered on a), and then move toward the outer periphery. The tip of the drive lever (to) has a long hole (85c), which engages with a roller (86c) at one end of the drive lever (to). The drive lever (to) is rotatable around the support shaft (86b). In addition to the drive lever (to), a lever (not shown) having approximately the same shape as the drive lever (to) is provided integrally with the drive lever (to) so as to sandwich the cassette holder a. Drive lever (
The rollers (a6e) of
a) is engaged with. In FIG. 4, the cassette holder 〇 is in a slightly raised position to the right, allowing the cassette (to) to be slid in from the holder (16a) with a light force.

(7) is a cassette holding lever provided in the cassette holter o1, which is rotatable around a support shaft (aab), and is biased counterclockwise by a tension spring (to) to fix the fixing lever. is in contact with. (88c) is a cylindrical boss portion at one end of the cassette holding lever (end), and is engaged with a long hole portion (41b) at one end of the connection lever 61. The connecting lever θ is rotatable around the support shaft (+ta). The other end (410) of the connecting lever θη is not in contact with the shutter (A) in the state shown in FIG. ). The cassette holder OQ is provided with roller support shafts (16b) (16C). In FIG. 4, a cassette stopper (not shown) is provided in the cassette holder oQ to prevent the cassette (c) from entering the cassette holder OQ any further (to the left in the figure).The roller of the cassette holder 00 Support shaft (16e
) is engaged with the elongated hole (86a) of the drive lever (to), and the roller support shaft (16b) is a drive lever that can rotate around the support shaft (82a) integrally with the drive gear (to). - is engaged with the elongated hole (48a). Also, this roller support shaft (leh
) is the guide groove (29b) formed in the guide base)
It is also engaged with The roller support shaft (16b) has a guide groove (
29b), it passes through a position where it slightly interferes with the drive gear (to), but there is no problem because a sufficient gap is secured in the mutual thickness direction. (290) is a guide groove formed on the guide base (to) for guiding the shutter (6). The shutter (6) can slide from the left to the lower right in the drawing along the guide groove (29G). Although the shutter itself will not be described in detail, it is constructed like a blind and prevents the inside of the device from being seen from the outside in the state shown in FIG.

There is a spring catch at one end of the shutter (6), which is engaged with a tension spring (290), which causes the shutter (6) to move approximately clockwise along the guide groove (290). Force is being applied. - is a cassette guide which is rotatable around a cassette guide shaft (49a) and biased clockwise in FIGS. 4 and 6 by a coil spring ring (see FIG. 7). 151) is a coil spring)
This is the lower end of the front surface of the main body that is formed to prevent the cassette guide (1) from protruding toward the front of the main body by contacting the cassette guide (2) which is biased by (see FIG. 4). i2
When the cassette (to) moves to the specified position and when it is installed in the specified position (see Figure 6), the cassette 0
This is a stopper pin that comes into contact with the cassette guide 61 that is in contact with the cassette guide 61 and stops the further rotation of the cassette guide 61 in the counterclockwise direction. Figure 7 shows the cassette holder 0.
This shows the relationship in the width direction between the cassette guide and the cassette guide.
Make sure that the cassette holder a does not go any deeper.
This is the line of the rear end of the cassette when the cassette 0υ is positioned by a cassette stopper (not shown) provided in Q.

This part of the cassette holder 04, except for the holder openings (16B) which are bent at both ends, is all located deeper than the line where the rear end of the cassette (to) comes. This is for the ease of taking out the cassette (2), and also because the cassette guide, which has a width H2 smaller than this width (1), does not come into contact with the cassette holder (11), and also at this width (2) part. This is for the purpose of bringing the cassette α0 into contact.

Next, we will discuss the operation of the cassette holder.

In FIG. 4, when the cassette loading motor (1) rotates, the worm gear on the motor shaft rotates. As a result, the worm wheel portion of the drive gear 6]) connected to the worm gear (b) rotates clockwise around the support shaft (81a). This rotation is transmitted from the spur gear portion of the drive gear (B) to the drive gear (2), and the drive gear (2) rotates counterclockwise around the support shaft (82B). This rotation is transmitted to the roller support shaft (16b) of the cassette holder OQ by the drive lever (2) integrated with the drive gear (2), and the roller support shaft (16b) begins to rise along the guide.

On the other hand, the rotation of the drive gear (2) is also transmitted to the cam gear (to) that rotates around the support shaft (88a), and the cam gear (to) rotates clockwise around the support [13a]. The drive pin (as
The drive lever (7), which has a shaft (85B) and is rotatable around a support shaft (85B), rotates the cam gear (aa
b) in a clockwise direction. This movement is transmitted to the roller (860) on the drive lever (to) through the elongated hole (850) of the drive lever (to), so that the drive lever (to) moves counterclockwise around the spindle (86b). It can be rotated in any direction. When the cam gear (2) begins to rotate clockwise, the cam groove (sab) will remain on the support shaft (
88B), so the cassette holder D
As for the movement of I, the cam groove (29b) moves only, and the front part of the cassette 08 moves so as to be lifted. At this time, the other end (41c) of the connection lever (11])
When the cassette holder aQ comes into contact with the shutter (6) biased by the tension spring) and the cassette holder aQ becomes horizontal, the counterclockwise movement of the connecting levers H moves from the long hole part (41b) to the boss of the cassette holding lever (to). The cassette holding lever (88a) rotates clockwise around the support shaft (ASB) by stretching the tension spring ■, and the tip (88a) It touches the rear side,
Even when the entire cassette holder 〇Q starts to rotate clockwise, the cassette αυ is held and prevented from slipping off from the cassette holder OQ.

As the cassette loading motor continues to rotate, the coupling lever 0υ continues to push up the shutter, and as shown in Figure 5, the cassette moves from (a) to (c), and finally at the shutter. Then, the reel stand (b) on the chassis and the cassette support post (b) are attached to complete the cassette loading operation.

Figure 6 shows the state when cassette loading is completed, the cassette is mounted on the cassette support post on the chassis, and the guard panel (15e) of the cassette is open. In this state, the magnetic tape can be pulled out and stored from the opening. In addition, during the cassette loading (near the state (c) in Figure 5),
(to the connecting lever) and (to the shutter) will no longer come into contact with each other,
When the shutter (6) comes into contact with the case part (not shown) of the cassette holder 01 and the cassette loading movement is completed, the shutter (6) is in the state shown in FIG. 6. At the same time, in Figure 5 (
In the vicinity of state c), the cassette holding lever (to) is rotated counterclockwise by the tension spring () and comes into contact with the fixing pin (). At this time, the cassette 0υ is no longer supported by the cassette holding lever, but is supported from below by the cassette guide member. It has already been mentioned that the drive levers (to) are on both sides of cassette holder Needless to say, smoother movement can be achieved by transmitting the rotation of the loading motor (to) and driving the cassette holder θQ.

During these cassette loading movements, the cassette guide comes into contact with the front lower end of the main body due to the force of the coil spring in Fig. 4, when viewed from the side where the cassette is inserted (right side of the drawing). The interior of the main unit appears to be intentionally hidden from the bottom of the cassette holder IS. When the cassette holder α begins to move in the direction of bringing the cassette (C) into the state shown in Figure 6, the cassette guide () comes into contact with the rear end of the cassette a0, thereby moving the cassette guide shaft (4911). Start rotating counterclockwise around the center. When the cassette 0 moves from the position (C) to the position () in Figure 5, the cassette guide () contacts the cassette (G) with one end in contact with the stopper pin σ (2), and the cassette 0υ It serves as a guide to a predetermined position.

Effects of the Invention As described above, according to the present invention, a cassette, such as a VH8 type cassette, which has an opening and a guard panel for the opening and is designed to be inserted mainly from the guard panel side, can be used. When inserting the cassette into the cassette holder, insert it slightly diagonally downward with light force, and then move the cassette holder so that you can see through it upright, making it very easy to insert the cassette and making it easy to see the cassette after it is installed. , the quality of the product is greatly improved, and the practical effects are great.

In addition, the cassette guide, which is rotatable on the cassette guide shaft, serves as a guide for the cassette when the cassette is near a predetermined position, and on the other hand, when the force set holder is largely exposed outside of the main body, it is difficult to remove the cassette. This ensures sufficient external dignity so that the interior cannot be seen from the side.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional example, FIGS. 2 to 8 show an embodiment of the present invention, and FIG. 2 is an enlarged perspective view seen from the front.
Fig. 8 is a schematic cross-sectional front view showing the internal mechanism, Fig. 4 is a schematic cross-sectional side view showing the internal mechanism, Fig. 5 is a movement trajectory of the cassette and seat when the cassette is installed, and Fig. 6 is after the cassette is installed. FIG. 7 is a schematic cross-sectional side view showing the internal mechanism, FIG. 7 is a perspective view showing the relationship between the cassette holder and the cassette guide, and FIG.
It is a front view in the state shown in the figure. (9)...Magnetic tape, 0θ...cassette, (15
(+) (t5d)...Opening, (15e)...Guard panel, (II...Cassette holder, (E)-
・Guide base, (2sb) (29(1)・-・Guide groove, So・・Cassette loading motor, 01
)...Drive gear, 01)...Drive gear, 2)...Cam gear, 1..Drive lever, (to)--Cassette holding lever, 01)...Connection lever, 2)... ...Shutter, @ field... Drive lever, )... Cassette guide, (49B)... Cassette guide shaft, (E) -...
Coil spring, eave 1)...lower end of the front of the main unit, stopper bottle agent Yoshihiro Morimoto Figure 1 Figure 6 Figure 7 K

Claims (1)

[Claims] 1. A cassette that stores a magnetic tape inside and has an opening for pulling out the magnetic tape and a guard panel for shielding this opening, and is made so that a magnetic recording and reproducing device can be inserted from the guard panel side. A magnetic recording/reproducing device using a magnetic recording/reproducing device, wherein the cassette is in a first state in which the front side thereof is slightly raised from a horizontal state, and in a second state in which the cassette opens the guard panel and the opening is located at the top. A cassette holder for shifting is provided, and is configured to record and reproduce signals in the second state, and comes into contact with the cassette and guides the rear end surface of the cassette when transitioning from the first state to the second state. A cassette guide rotatable around a cassette guide shaft is provided, and a spring is provided on the cassette guide for applying force in a direction to contact the cassette around the cassette guide shaft, and the cassette guide is rotated in the first state. A magnetic recording/reproducing device that prevents the magnetic disk from protruding from the front of the device body.