JPS60115059A - Magnetic recorder - Google Patents

Abstract

PURPOSE:To control the inserting direction of a disk cassette to a cassette holder and to prevent the malfunction of a magnetic recorder, by providing a hook projection at a single side corner of the inside of the cassette holder and fitting said projection to a single side corner of the disk cassette. CONSTITUTION:A sloping surface type cut 20 is formed at a corner where the front edge and the right edge of a hard case at the side of an insertion terminal of a disk cassette 4 cross each other. While a cassette holder 48 has a hook projection 54 which is fitted to the cut 20 of the cassette 4. Then the cassette 4 is inserted to the holder 48 from the front edge of the hard case regardless of the upper surface side or the rear surface side of the cassette 4 or with the rear edge turned to the front side. As a result, the corner of the hard case has interference to the projection 54 and therefore a part of the cassette 4 remains at a slit 49. This prevents the holder 48 from falling toward a base 1 and prevents the misinsertion of the cassette 4.

Description

[Detailed description of the invention] Technical field of invention The present invention relates to a magnetic recording device.

Technical background of the invention and its problems Conventionally, a disk cassette containing a magnetic disk stored in a seven-door case was inserted into a flat cassette holder through a slit in the front knob, and the cassette holder and the cassette disk were inserted into an extension of the slit. There is a device that is clamped by dropping it onto the side of the disk drive shaft perpendicular to the surface, and data processing is performed in this clamped state.

However, the node case of a disk cassette has a window facing the magnetic head, a write-inhibiting claw facing the sensor, a positioning hole, etc. formed at certain positions, but the direction in which the disk cassette is inserted into the cassette holder is Sometimes I get it wrong.

OBJECTS OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a magnetic recording device that can prevent malfunctions by determining the direction in which a disk cassette is inserted into a cassette holder.

Summary of the Invention This invention holds the cassette holder by dropping protrusions protruding from both sides of a cassette holder into which a disc cassette is inserted into the locking groove from the guide groove of the frame, and in this state, the disc drive shaft is used to hold the cassette holder. In a device that processes data by rotating the magnetic disk inside the case, when pushing the disk cassette until one side of the insertion side of the disk cassette comes into contact with the stopper on the back side of the cassette holder, By forming a locking protrusion on the cassette holder that engages with a notch formed in one corner of the insertion end, the disc cassette can be inserted upside down or inserted from the rear edge. Because it interferes with the locking protrusion, the insertion depth becomes shallow, and part of the disk cassette remains in the slit in the front panel, preventing the cassette holder from shifting toward the disk drive shaft, causing the hard case to become vertically long. Therefore, it is impossible to insert the disc cassette horizontally into the cassette holder. Therefore, the insertion direction of the disc cassette is regulated to prevent malfunction.

Examples of the invention An embodiment of the present invention will be described based on the drawings.

(1) is a die-cast pace, and the top surface of this pace (14) has a carrier block (2) and a carrier motor (3).
) is provided. Although not shown, the carrier block (2) has a carrier that holds a magnetic head and moves linearly by the rotational force of a carrier motor (3), and a head load arm that faces the magnetic head. In addition, on the top surface of the spacer (1) there are pillars (5) (6) that support the four corners of the lower surface of the disc cassette (4), and a conical protrusion (7) is formed at the upper end of the pillar (5) on the back side. has been done. A motor (8) is attached to the center of the pace (1), and a circular table (9) is attached to this motor (8).
A disk drive shaft (IT) having a table (IT) is connected to the table (9), and a bottle α sword is erected on the outer periphery of this table (9).
(See Figure 6).

As shown in FIGS. 7 and 8, the disk cassette (4) is a flat node case Q with a ring (2) supported by a table (9) and a magnetic disk fixed in the center.
→, and the ring (2) has the pin (11
) is formed to engage with the hole α9. Further, a positioning hole (1411) to be positioned on the conical protrusion (7) and a foldable write-inhibiting claw 0'h are formed on the back surface of the node case (B). A notch (A) is formed in the shape of a slope at the corner where the front edge (old) and the right side edge (U) intersect on the insertion end side.Furthermore, in the node case q4, a disc shutter is attached to the right side edge (11). It is attached so that it can slide freely while being biased toward the side.When this disk shutter Q is slid to the left, it opens the window (E) opposite to the window (C) formed in the hard case U4.
have. Furthermore, the front edge 08 of the node case 04
A locking recess (c) is formed in.

Next, on the upper surface of the pace (1), a front panel (C) is attached to the front opening surface, and a frame made of a metal plate having a pair of left and right side plates (C) is screwed. Two horizontal guide grooves and two downwardly bent locking grooves are continuously formed on the sides (c). In addition, three guide pins are erected at the bottom of the frame (A), and on the right side of the bottom, a lock plate 02 having a claw 0]) at the tip can be freely tilted back and forth around the pin (C). held and lock play on this pin 03) (
A spring (b) that raises I forward is held. Furthermore, there is a bushing plate (c) on the left side of the bottom of the frame.
is attached so that it can slide freely and is biased forward by a spring OQ.

The bushing plate (c) has a wide part 0 as shown in Figure 4.
and a narrow portion (b) that protrudes upward. Furthermore, the frame (a) is formed with a notch 0Q for holding the PC board and a mounting piece 6).

Next, on the bottom of the frame, a clamp release body (T) having a button (6) protruding from the front panel (2) is urged forward by a spring 11 to release the guide pin (7). It is held in such a way that it can slide freely. This clamp release body 01 is made of sheet metal,
On the right side thereof, a notch that engages with the claw 0 of the lock plate oa is formed, and on both sides there are push-up edges that slope downward from the upper edge (g) at the same level as the bottom of the guide groove (c). 6
71 is formed.

A cassette holder for slidably holding the disk cassette (4) is provided above the lamp release unit 4. This cassette holder @
The pass is open at the front and has a slit formed on the front panel (C)) facing II, the bottom side is wide open, and on each side there are two protrusions ■ made of bottles supported by the guide grooves (C). installed.

This cassette holder (c) is urged toward the front panel (c) and the base (1) by a spring φυ.

Furthermore, leaf springs are attached to both sides of the cassette holder (b) to press the disk cassette (4) into contact with the bottom of the cassette holder 1→. Furthermore, cassette holder 0
→ includes a stopper that contacts the rear edge of the disc cassette (4), a locking protrusion (b) that engages with the notch of the disc cassette (4), and a stopper (b) that engages with the notch of the disc cassette (4). ) and a groove (2) corresponding to the narrow portion (to) are formed on the protruding piece. Further, a lever @ is attached to the cassette holder Ωθ so as to be rotatable about the support shaft φ9 by being biased by a spring branch, and the tip of this lever 67) has a locking recess for the disk cassette (4). (To)
A pin that engages with... is fixed.

Guides 12 for vertically movably holding the front shutter (6) facing the slit @9 are integrally formed on both sides of the inner surface of the folded lambda rondo panel (c).

A projecting piece is integrally formed on the upper surface of the front shutter (on the cassette holder in 6) and is slidably inserted into the lower side of the par.

In this configuration, the clamp release body 13 is prevented from moving forward because its notch engages with the claw θ force of the lock plate 02. This state is as shown in FIGS. 1, 2, and 5.

When in use, insert the disk cassette (4) into the cassette holder (G) through the slit Ili of the rough front nozzle (E) and push the cassette holder @→ toward the carrier motor (3). As a result, the protrusion (on the cassette holder) reaches the top of the locking groove from the guide groove (c), but the upper edge (40) rising from both sides of the clamp release body I is supported by the base (1) side. It does not fall.The lever (51) rotates against the force of the spring because the bottle is pushed by the front edge Q8 of the disc cassette (4), and the bushing plate (to) is also pushed by the front edge Q8. When the carrier motor (3) is pushed into the cassette holder, the lock plate 02 is pushed by the front edge qa of the disk cassette (4) and the lock plate 02 loosens the spring (b) and tilts backward. As shown in FIG. 6, the claw C3 releases the clamp release body (G). As a result, as shown in FIG. 3, the clamp release body Q4 slides toward the front panel (C) by the force of the spring α, and the upper edge αQ retreats toward the front panel (C). Therefore, the cassette holder (g) is pulled together with the disk cassette (4) toward the base (1) by the force of the spring Gη, and the protrusion falls into the locking groove. The disk cassette (4) is supported by the pillars (5) and (6) under the pressure of the plate spring action, and is set in an accurate position by the engagement of the positioning hole (tg) and the conical protrusion (7). Disc α
'3 ring (2) is connected to the disk drive shaft OO.

Further, the switch IG attached to the base (1) is switched by the bushing spray [3→, thereby making it possible to take out the disk cassette mounting state as an electrical signal.

Unfortunately, the lever 6η rotates because the bottle is pushed by the disk cassette (4), but the bottle member is not pushed by the disk cassette (4).
4) leading edge (18)'! - During the sliding process, the disc shutter (2υ) is forced to slide to the left, and when the window (c) of the disc shutter Qυ and the window (a) formed in the hard case tS match, the bottle... (
14) into the locking recess (c). Therefore, even if you release your hand pushing the disk cassette (4), the lever 6'?
) does not return due to the force of the spring, and maintains the mounted state of the disk cassette (4). Due to the force of the spring OQ, the bushing plate (C) pushes the protrusion (7) on the cassette holder at the wide part 0'IJ, but the protrusion (7) does not fit into the locking groove (C).
) are engaged, so the cassette holder (9) does not move.

To take out the entire disk cassette (4), press button 04, push the clamp release body (g) toward the carrier motor (3), and use the push-up edges on both sides to push up between the protrusions to the level of the guide groove. Therefore, the cassette holder (G) returns to the front panel (C) side when the protrusion (7) goes toward the back of the guide groove (C), and the released lock plate 02 moves forward by the force of the spring (B). The clamp release body α is locked by the return claw (3]). So far Lever@
The pin ■ and the locking recess (c) of the disc cassette (4) were locked together, but when the cassette holder (c) lifted off the base (1), the protruding piece was attached to the button plate (to). Since it reaches the upper part of the wide part 0η of , the narrow part (b) enters the groove ring and pushes the disk cassette (4) toward the front panel (c). As a result, the pin of lever 0'i)...
comes off from the locking recess (c) of the disc cassette (4),
The lever ei is rotated by the spring force while pushing out the disk cassette (4) from the cassette holder (9) to the slit 1'4 by means of a pin.

In this way, just by pushing the disc cassette (4) into the cassette holder together with the disk cassette (4), the protrusion falls into the engagement groove (c) by the force of the spring η and the cassette holder 0
→ is clamped, so the structure as a clamping mechanism is extremely simple. Furthermore, the same purpose can be achieved even if the lock plate 0 which is pressed against the front edge of the disk cassette (4) is omitted and the clamp release body t41 is always positioned on the front panel (c) side by the force of the spring 14. I can do it. Thereby, the structure of the clamping mechanism of the cassette holder 013 can be further simplified.

Next, the effect of preventing incorrect insertion of the disk cassette (4) will be explained. When inserting the magnetic disk (ring (6) of 11 upwards into the hard case (14I) from the front edge aυ into the cassette holder Sakaki, the hard case Q
→ Hold the cassette holder (with the trailing edge (18 cL)' facing forward.
When inserted into the cassette holder 0→ (b), the corner of the hard case αφ interferes with the locking protrusion.
Prevent falling movement in the direction. Also, the hard case α4 is almost vertically long, specifically the width is 90+mn and the vertical length is 94m1, so it is impossible to insert it into the cassette holder @toge and slit t41 with the vertical side facing forward. . The front edge q of the ring α2 faces the base (1) 011I.
Only when the disk cassette 81 is facing forward, the disk cassette (4) can be installed in the cassette holder Qll and the cassette holder Ql
This makes it possible to clamp the connector and prevent incorrect insertion and malfunction.

Effects of the Invention Since the present invention is configured as described above, if the disk cassette is inserted in the wrong direction, the node case and the locking protrusion of the cassette holder will interfere with each other to prevent the cassette holder from clamping. Therefore, the insertion direction of the disk cassette can be set to one direction, thereby achieving the effect 'c7 of preventing malfunction.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view, FIGS. 2 and 3 are side views showing the operation of the skein/throat holder, FIG. 4 is an exploded perspective view, and FIGS. Figure 6 is the first
FIG. 7 is a perspective view of the disk cassette, and FIG. 8 is a perspective view of the disk cassette seen from the back. 4...disfusor casera), 10...disk drive shaft, 13...magnetic disk, 14...node case, 18...node case front line, 20...hard case notch , 25...front panel, 27...
Frame, 28... Guide groove, 29... Locking groove, 4
3... Clamp release body, 48... Cassette holder,
49...Slit, 50...Protrusion, 53...Stock, 54...Locking protrusion Applicant: Tokyo'Kameki Co., Ltd.

Claims (1)

[Claims] A front panel in which a slit for inserting and removing a disk cassette containing a magnetic disk stored in a substantially vertically elongated hard case is attached to the frame, and a flat cassette holder for holding the disk cassette so that it can be freely inserted and removed is attached along the extended surface of the slit. a disk drive shaft is provided opposite to the plane of the cassette holder and has an axis perpendicular to the plane of the cassette holder; a plurality of protrusions are provided on both sides of the cassette holder; and a plurality of projections are provided on both sides of the frame; A plurality of guide grooves for slidably holding the protrusion along the extended surface of the slit and a plurality of locking grooves for dropping the protrusion from these guide grooves onto the disk drive shaft side are formed, and A clamp release body that urges the cassette holder toward the front panel side and the disk drive shaft side and pushes out the protrusion of the cassette holder from the locking groove to the level of the guide groove is slidable on the frame. A stop hole is provided on one side of the back side of the cassette holder to receive the front line on the insertion end side of the disc cassette, and is engaged with a notch formed in one corner of the insertion end side of the disc cassette. A magnetic recording device characterized in that a locking protrusion is provided at one corner on the back side of the cassette holder.