JPS60115060A - Magnetic recorder - Google Patents

Abstract

PURPOSE:To attain the accurate positioning of a cassette holder by having the coincidence between the distance between counter faces of two projections and the distance between the inside edges of two hook grooves, and fixing the play of the projections to the hook grooves at each side of a frame and the cassette holder. CONSTITUTION:Two horizontal guide grooves 28 and hook grooves bent downward are formed continuously at the right and left side of a side plate 26 of a frame 27. Then two projections 50 using pins which support a cassette holder 48 are attached at both sides of the holder 48 via a guide groove 28. In an action mode, the holder 48 is dropped toward a medium drive shaft. In this case, the coincidence is obtained between a distance (a) between projections 50 and a distance (b) between the inside edges of grooves 29. Then the plate 26 is held horizontally by the projections 50 and therefore the projection 50 has no horizontal play to the groove 29. Thus the accurate positioning is possible for the holder 48.

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 flat cassette holder that holds a magnetic disk stored in a hard case so that it can be taken in and out is provided, and two protrusions such as bottles are provided on both sides of the cassette holder. Horizontal guide grooves and locking grooves that are directly connected to these guide grooves are continuously formed on both sides of the frame that holds the front panel at the front, and the cassette holder is attached to the front panel side and the cassette holder. The protrusion of the cassette holder is guided by the entire guide groove, and the cassette holder is pushed in with the disk cassette, and the protrusion engages from the guide groove to the locking groove. There is a magnetic recording device with a clamp structure in which the cassette holder is dropped into the disk drive shaft and the disk drive shaft and the disk cassette are maintained in a connected state.

However, in the clamped state, the cassette holder is biased by a spring toward the shift lot panel side and the disk drive shaft side, and the protrusion elastically contacts one side of the locking groove. Since the clearance must be thrown between the upper protrusion and the locking groove, there is a risk that the position of the cassette holder may be misaligned.

OBJECTS OF THE INVENTION The present invention was made in view of the above points, and an object of the present invention is to provide a complete magnetic recording device capable of accurately positioning a cassette holder.

Summary of the Invention This invention provides two protrusions on each side of a flat cassette holder that holds a disc cassette, two guide grooves for sliding the protrusions on both sides of a frame to which a front panel is attached, and two guide grooves for sliding the protrusions. When in use, the cassette holder is pushed together with the disk cassette, the protrusion is engaged from the guide groove to the locking groove, and the cassette holder is dropped, thereby causing the disk drive shaft to In a device that is completely connected to the magnetic disk of the disk cassette, the width of the locking groove is made easy to manufacture with an allowance for the outer diameter of the protrusion of the cassette holder, and the frame and one side of the cassette holder are The distance between the opposing surfaces of the two protrusions and the inner edge of the two locking grooves is made to completely match, so that when the protrusions are engaged with the locking grooves, the cassette holder will move in the front-rear direction. The cassette holder is configured to be able to accurately position the entire cassette holder by fixing its movement.

Embodiment of the Invention An embodiment of the invention will be described with reference to the drawings. 8 (1) is a die-cast base, and on the top surface of this base (1) are a carrier 10 (2) and a carrier motor (3). is provided. The carrier block (2) is 7iL as shown.
This system includes a carrier that holds the JK magnetic head and moves linearly by the rotational force of a carrier motor (3 motors), and a head load arm that faces the magnetic head.
A column (11+) (6) that supports the four corners of the lower surface of the disk cassette (4) is erected on the upper part of the base (1), and a conical protrusion (7) is formed on the upper part of the column (5) on the back side. has been done. In addition, a motor (8) is attached to the center of the base (1).
A disk pivot shaft (2) having a table (9) is connected to the disk, and a pin (B) is erected on the outer periphery of this table (9) (FIG. 5).

(See Figure 6).

As shown in Figures 7 and 8, the 6iJ disk cassette (4) is a flat hard case (141) with a magnetic disk <1.1k fixed in the center and a ring (6) supported by a table (9). A hole is formed in the ring 0 which engages with the pin Ut+.(On the back of the hard case 0Φ...1 conical protrusion (7)
A predetermined hole QO and a breakable write-protection claw are formed at the position 1, and a diagonal
) is formed. Further, a disk shutter (2) is attached to the hard case α→ so as to be slidable while being biased toward the right side edge α. This disk shutter (2D has a window facing the window (2) formed in the hard case 141 when sliding to the left). Furthermore, a notch is formed in the front edge (c) of the hard case a41.

Next, on the top surface of the AiJ base (1), several front panels (c) are placed between the front openings, and a metal plate frame (a) having a pair of side plates (a) is screwed to the top. On the side plate (A), two horizontal guide grooves (C) and two downwardly bent locking grooves are formed in a continuous state.In addition, there are three on the bottom of the frame ■υ. A guide pin ■ is set upright, and on the right side of the bottom, a lock plate 6'4 with a claw 6◇ at the tip is held so as to be tiltable in the front and rear directions centering on the pin (c). A spring (2) that raises the frame forward is held.Furthermore, a footstool plate (2) is attached to the bottom left side of the frame (A) so that it can slide freely and is biased forward by a spring (2).

(on the bushing plate) is wide part 07 as shown in Figure 4.
) and a narrow branch protruding upward. moreover,
The frame (2) is formed with a notch @Q and a number of pieces 0 for holding the entire PC board (2).

Next, on the bottom of the front 6-way frame ψ, a clamp release body (2) having a button (6) protruding from the afro/done panel (C) is biased forward by a spring (B) to release the guide pin. (To) The system slide is freely held. This clamp release body (c) is made of sheet metal, and on the right side there is a claw 6υ on the lock plate marked BR: J.
A notch (c) is formed to engage with the guide groove (c), and push-up edges are formed on both sides of the guide groove (c) that slope downward from the upper edge 00 at the same level as the bottom of the guide groove (c).

A cassette holder (c) for slidably holding the disk cassette (4) is provided on the upper part of the wrap release body (goods). This cassette holder (c) has an open front l facing the slit formed in the front panel (c), and is wide open downward.
On both sides, two protrusions (2) made of bottles supported by guide grooves (Stl) are attached.

The width of the locking groove 4 is set to be as large as possible relative to the outer diameter of these arrow parts. In addition, there are two protrusions on each side of the frame (B) and the cassette holder...The distance α between the opposing surfaces of the two protrusions and the distance between the inner lines of the two engaging grooves (4) are as shown in Figure 2. is determined to be equal to It is biased toward the cassette holder (which is attached to the front panel by sublime/glue) and the base (1). Also,
Both 1 tlF of this cassette holder are attached to a plate that presses against the bottom of the disk cassette (4) (to the set holder).

Furthermore, the cassette holder (c) has a disc cassette (
4) The receiving plate that touches the rear edge and the disc cassette (4)
A receiving piece (goods) that comes into contact with the slope of )), and a protruding piece that faces the wide part (b) of
A notch 1 o'clock corresponding to the narrow part is formed in the tile. Furthermore, is there lever 1 on the cassette holder (c)? ) is biased by the sublinograph and is rotatably mounted as the center of the support shaft, and at the tip of this lever there is a pin 1 that engages with the notch (C) of the disk cassette (4). is fixed.

Also, on both sides of the inner side of the front door panel 09, there are integrally molded guides ←4 that hold the front shutter facing the front shutter so as to be movable up and down. A protrusion (JJl) is integrally inserted into the lower side of the holder (fixed to Ueda 1 of the wire) in a slidable manner under the bar ←p.

In this configuration, the notch II of the clap release body (2) engages with the claw 0]) of the lock plate 0'4, so that forward movement of the body 11LIIN is prevented. This state is shown in FIGS. 1, 2, and 5e.

When in use, insert the disk cassette (4) into the slit of the rough loft bin (c) into the cassette holder (c) and push it toward the cassette holder (1119 & carrier motor (3). The protrusion ... reaches from the guide groove (E) to the locking groove (E), but it does not fall onto the base (1) 11 because it is supported by the upper edge spools rising from both sides of the clamp release body.Lever 6 The front of the disc cassette (4) rotates against the force of the spring (because it is pressed by the target), and the bushing plate ζ
The front edge is also pushed to the 0th stage and slides toward the carrier motor (3). When the cassette holder □□□ is pushed in again, the lock plate m is pushed by the front θ barrel of the disk cassette (4), relaxes the spring ■, tilts backward, and the claw 0η releases the clamp, as shown in Figure 6. Release the body □□□. As shown in Figure 3, the γr removal ring is attached to the front panel by the force of the spring (b).
Ic slides and the upper edge θQ retreats to the front panel (c) side 2). Turn around and insert it into the cassette holder (c).
Together with the disk cassette (4), the base (1) is pulled by the force 1t of the spring ψ]), and the protrusion falls into the locking member. The disk cassette (4) has a leaf spring 6
Second pressure? Supported by support column (5,) (G) ft,
L, the position of the magnetic disk (L field plate (6) is connected to the disk drive shaft (L), and the magnetic disk (L field plate (6) is connected to the disk drive shaft (L) In addition, by switching the switch (1) attached to the base (1) to the bushing plate (1), it is possible to take out the installed state of the P1 disk cassette as an electric key.

Also, the lever I71 rotates because the pin is pressed against the disk cassette (4), but in the process of the pin 11 sliding on the front edge (g) of the disk cassette (4), the disk shutter 12 Forcibly slide it to the left, and when the window (A) of the disk shutter Qυ and the window (A) formed in the hard case a are aligned, the pin falls into the notch (c) of the hard case (141). In the past, even if you released your hand from the disk cassette (4), it would not return due to the force of the lever 6, and the disk cassette (4) would not return due to the force of the lever 6.
4) Maintain the complete wearing condition. The force of the push plate (on the spring) pushes the protrusion on the cassette holder (c) with the wide part), but since the protrusion on the cassette holder (c) is engaged with the locking groove (a), the cassette holder ( C) does not move.

To take out the entire disc cassette (4), press the button () and press the clamp release body () towards the carrier motor (3), and use the push-up edges 0υ on both sides to push the protrusion (2) up to the level of the guide groove (E). Therefore, the cassette holder (c) is inserted into the front panel (
2) Return to the side, and the released lock plate Q returns to the front by the force of the spring () and locks the clamp release body () with the claw C1,). Lever I so far? ) was still engaged with the notch (c) of the disc cassette (4), but the cassette holder (c) was not attached to the base (1).
When it lifts up, the protruding piece becomes the wide part of the bushing plate).
As it reaches the top of the disk cassette (4), the narrow part () enters the notch () and pushes out the entire disk cassette (4) toward the front panel (c). As a result, the pin/- of the lever 671 comes off the notch (c) of the disk cassette (4), and the lever 071
is pushed out from the slit (4) from the 2-cassette holder (c) to the slit (4) by the pin ring, and is rotated by the force of the sublinograph.

As mentioned above, the cassette holder (c) falls toward the media drive shaft 01 side during use, but the protrusions arranged in the front and rear...
The distance a between the facing surfaces of the two locking grooves is equal to the distance between the inner edges of the locking groove surfaces.
Since it is held in the front-back direction, there is no play in the front-back direction of the protrusion against the locking part. Therefore, the cassette holder (goods) can be properly positioned. In addition, the width of the locking part (6 degrees) relative to the outer diameter of the protrusion (2) should be wide enough (even if the cassette holder (C) is positioned accurately) Easy.

Effects of the Invention Since the present invention is configured as described above, when in use, the protrusions of the cassette holder are engaged with the locking grooves from the guide grooves on both sides of the frame, and the cassette holder is dropped onto the disk drive shaft side. It is possible to accurately position the cassette holder by fixing the play of the protrusion with respect to the groove, and the width margin of the locking groove can be increased with respect to the outer diameter of the protrusion, making production easier. This has the effect of making things more interesting.

[Brief explanation of drawings]

Drawing t shows an embodiment of the present invention; FIG. 1 is a plan view, FIGS. 2 and 3 are side views showing the operation of the cassette holder, FIG. 4 is a perspective view of the cassette holder, and FIG. 6 is a vertical cross-sectional side view showing the operation of the 10 cassette holder taken along line A-A in FIG. 1, FIG. 7 is a perspective view of the disk cassette, and FIG. 8 is an SrF view of the disk cassette seen from the back side. It is a diagram. 4... Disk cassette, 10... Disk drive shaft, 13... Magnetic disk, 14... Hard case,
z5...Front panel, 27...Frame, 28
... Guide groove, 29 ... Locking groove, 43 ... Clap release body, 48 ... Cassette holder, 49 ... Slit, 50 ... Projection, a ... Opposing surface of projections interval,
L... Inner hardness of the locking groove [for the corner between the pair of edges] Toji Electric Co., Ltd. - ■, 1i

Claims (1)

[Claims] A front panel having a slit for inserting and removing a disk cassette containing a magnetic disk stored in a hard case is attached to the frame, and a flat cassette holder for holding the disk cassette so as to be freely inserted and removed is provided 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 that is directly fired with respect to the plane of the cassette holder, two protrusions are provided on both outer sides of the cassette holder, and two protrusions are provided on both sides of the frame. Two guide grooves are formed in which the protrusion is slidably held along the extended surface of the slit, and two locking grooves are formed in which the protrusion is dropped from these guide grooves toward the disk drive shaft side. A clamp release body is slidably provided on the frame to urge the cassette holder toward the front panel side and the disk drive shaft side, and to cause the entire cassette holder to escape from the locking groove, and the outer diameter of the protrusion is set in the locking groove. The width of the groove is set to be smaller than the width of the groove, and the distance between the facing surfaces of the two protrusions and the distance between the inner edges of the locking grooves are made to match each other on each side of the frame and the cassette holder. magnetic recording device.