JPH03194761A - Mis-insertion prevention device for disc caddy - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for preventing erroneous insertion of a disc caddy, which is provided in an apparatus that uses a separate disc caddy for a recording medium such as a CD-ROM.

[Prior Art] As shown in FIG. 10, a separate type disc caddy has a cartridge insert 2 holding a disc 3, which is a recording medium, in a curved gripping portion 2a, and an opening in one side as shown in FIG. By inserting the cartridge cover I into the cartridge cover I as shown in FIG.
The grip portion 2a and the disk 3 are housed inside to protect the disk 3. When the recorded information on the disc 3 is read out by the reading device, the disc 3 and the cartridge insert 2 are inserted into the reading device, and the cartridge cover 1 is taken out from the reading device. In addition, Fig. 12 shows the cartridge cover 1 with the cartridge insert 2 inside.
A part of the upper surface 1a of the cartridge cover 1 is shown cut away to clearly show the state in which the disk 3 is housed. Furthermore, in the cartridge insert 2, the gripping portion 2
When the disc caddy is inserted into the reading device, the side surface facing the opening 2b of the cartridge a has a cartridge insert 2.
A fixing portion 2c is provided for engaging with a fixing claw provided in the reading device in order to fix the device in the reading device. The fixed portion 2C is provided with a protector 4 that operates to prevent information recorded on the disc 3 from being accidentally erased.

In order to read out the recorded information, the disc 3 housed in the cartridge cover (1) is inserted into a reading device as shown in FIG. It is inserted in the six directions indicated by the arrow.

The reading device includes a device that guides the cartridge cover 1 from the left and right through grooves 6a when the disc caddy is inserted.
Two channel-shaped guide rails 6-1, 6-2 (
(representatively referred to as guide rails 6) are installed in parallel with each other with their grooves 6a facing each other, and a disk holder ti on which the disk 3 taken out from the cartridge cover 1 is placed is located between the two guide rails 6. is installed in the center of the

In addition, in the space between the grooves 6a of the two guide rails 6 at the cartridge cover insertion opening of the reading device, there is a front-side detection device to prevent the disk 3 from being inserted into the reading device with the wrong side facing up. A plate 8 is provided. This front/back detection plate 8 has a triangular cross-sectional shape in which an inclined surface 8b that slopes upward as it advances in the insertion direction from the insertion opening, and the left and right ends of the front/back detection plate 8 are A protruding triangular protrusion 8a is formed. Such front and back detection plates 8 are installed so as to connect the lower surfaces 6b of the respective grooves 6a of the left and right guide rails 6. Although not shown in FIG. 13, when the disc caddy is inserted into the insertion slot in the normal direction without making a mistake with the front and back sides of the disc 3, an arrow C is displayed on the front/back detection plate 8 as the disc caddy enters. An appropriate mechanism for moving the front/back detection plate 8 in the direction shown by is provided.

Such front/back detection plate 8 functions as follows. That is, when the disc caddy containing the disc 3 is correctly inserted into the insertion slot without turning the disc 3 upside down, both the left and right ends of the fixing portion 2C of the cartridge insert 2 are inserted as shown in Fig. 1θ. The fixing portion 2c does not interfere with the projection 8a due to the notch 2d provided in the portion.

Therefore, the end surface 2e of the fixing portion 2c comes into contact with the inclined surface 8b of the front/back detection plate 8. Therefore, since the front/back detection plate 8 moves in the direction of arrow C as the disc caddy is inserted, the disc caddy can be inserted into the reading device as it is. On the other hand, when an attempt is made to insert the disc 3 between the front and back sides, the protrusion 8a and the end surface 2f located above the notch 2d of the fixing part 2c interfere in a substantially parallel manner, and the cartridge cover 1 is not inserted into the reading device. This prevents the disk 3 from being inserted into the reading device with its front and back sides erroneously inserted.

Further, when the disc caddy is inserted to a predetermined position in the reading device, the fixing part 2 of the cartridge insert 2
Two fixing claws 12 and 13 are provided in each reading device for engaging with the fixing portions 2C and fixing the fixing portion 2C.

[Problems to be Solved by the Invention] As described above, when inserting a new disc 3 into the reading device, front and back detection [8
However, the conventional reading device is not provided with a mechanism to prevent the cartridge cover 1 from being erroneously inserted again after the disk 3 has been inserted into the reading device. That is, in the case of a separate type disc caddy, the cartridge cover 1 is taken out from the reading device after the disc 3 is inserted as described above, so it is not necessary to insert the cartridge cover into the reading device as in the case of a type of device in which the cartridge cover is inserted into the reading device. The problem is that a new disc caddy that is trying to insert into a previously used cartridge cover does not interfere with the disc caddy and become impossible to insert, and even if disc 3 has already been inserted into the reading device, a new disc caddy is mistakenly tried to be inserted again. There is a point.

If you accidentally try to insert the disc caddy again in this way, it may damage the installed disc 3, or a part of the disc caddy you are trying to insert may be scraped, creating a dust gap that may have a negative impact on the reading device. There is a problem with giving.

The present invention has been made to solve these problems, and an object of the present invention is to provide a mechanism for preventing incorrect insertion of a disc caddy, which can prevent the disc caddy from being reinserted into a reading device in which a disc is already installed. do.

[Means for Solving the Problems] In the present invention, a disc on which information is recorded is stored in a cartridge cover by inserting a disc caddy to a predetermined position in a reading device and then taking out the cartridge cover from the reading device. In a disc caddy mis-insertion prevention device used in a disc caddy-in mechanism in which the above-mentioned disc is inserted into the reading device, when the disc is inserted into the reading device, the cartridge cover is inserted into the reading device. An inclined surface that contacts the end surface of the cartridge cover when the cartridge cover is inserted to enable insertion of the cartridge cover, and a side surface that contacts the end surface of the disc caddy parallel to the end surface when the disc caddy is inserted into the reading device. an erroneous insertion prevention plate having a contact portion formed to protrude further, and the insertion prevention plate being movable from a retracted position to a disc caddy insertion opening of the reading device when the disc caddy is inserted into the reading device. and an erroneous insertion prevention plate moving means for holding the erroneous insertion prevention plate at the retracted position when the disc caddy is removed from the reading device.

[Operation] As the disc caddy is inserted into the reading device, the erroneous insertion prevention plate moving means makes the erroneous insertion prevention plate movable from the retracted position to the disc caddy insertion opening position of the reading device. Therefore, after the disc is inserted into the reading device,
Even if an attempt is made to insert a new disc caddy, the end surface of the disc caddy comes into contact with the abutting part formed on the erroneous insertion prevention plate located in the insertion slot, so the erroneous insertion prevention plate prevents the new disc caddy from being read. Prevent insertion into the device. On the other hand, even when a disc is installed in the reading device, when an attempt is made to insert the cartridge cover, the end surface of the cartridge cover comes into contact with the sloped surface of the incorrect insertion prevention plate located in the insertion slot, preventing incorrect insertion. The plate can be moved toward the retracted position. Therefore, when an attempt is made to insert the cartridge cover, the erroneous insertion prevention plate does not prevent the insertion. Further, when taking out the disc caddy from the reading device, the erroneous insertion prevention plate moving means moves the erroneous insertion prevention plate from the insertion opening to the retracted position.

Embodiment] In FIG. 1 showing an embodiment of the erroneous insertion prevention mechanism of the present invention, the same components as those shown in FIG.

As shown in FIG. 2, the erroneous insertion prevention plate 9 has a triangular cross-sectional shape similar to the front/back detection plate 8 described above, and triangular protrusions 9a are provided at both left and right ends from inclined surfaces 9b. It is formed at a position facing the protrusion 8a formed on the detection plate 8. Moreover, the back surface 9 which is the opposite side to the above-mentioned inclined surface 9b
Support rods 15a, 1 protrude from the back surface 9c at both ends of C.
5b is integrally formed with the erroneous insertion prevention plate 9.

Such an erroneous insertion prevention plate 9
b and the inclined surface 9b of the erroneous insertion prevention plate 9, the inclined surfaces are faced to each other so that the interval formed by The support rod 15a is arranged so that the portion 8a and the protrusion 9a provided on the erroneous insertion prevention plate 9 face each other with an appropriate gap.

It is supported by a support pin 20 inserted through 15b.

The fact that the incorrect insertion prevention plate 9 is positioned above the front/back detection plate 8 in this way means that the upper surface 6c of the groove 6a of the left and right guide rails 6 is
The erroneous insertion prevention plate 9 is positioned so as to connect the sides.

Note that the support pin 20 is not shown in FIG.

Among the support rods 15a and 15b, an end of the support rod 15a is provided with a wrong insertion prevention plate 9 parallel to the longitudinal direction of the wrong insertion prevention plate 9.
A flat support rod rotating plate IB extending toward the end of the support rod 15g is integrally formed with the support rod 15g.

Incidentally, as shown in FIG.
It bends downward in a right angle direction along the side surface 6e of the guide rail 6-2, extends to approximately the center of the side surface 6e of the guide rail 6-2, and further extends along the side surface 6e of the guide rail 6-2 opposite to the incorrect insertion prevention plate 9. An L-shaped bent portion 16b is formed that extends in the longitudinal direction of the guide rail 6-2. In addition, the bent portion 16
The length of the support rod rotation plate 16 is determined so that there is an appropriate gap between the back surface 16c of the support rod rotation plate 16 and the side surface 6e of the guide rail 6-2. The support rod 15a is suspended by a support pin 20 so as to leave an appropriate gap from the upper surface 6d of the support rod 15a. Therefore, the incorrect insertion prevention plate 9, support rod 15a, and
As shown in FIG. 3, the bent portion 16b rotates around the support pin 20 to positions indicated by a solid line and a two-dot chain line. In addition, the integrally constructed incorrect insertion prevention plate 9, etc., is moved by the arrow D shown in FIGS. 2 and 3 by a spring or the like.
It is biased in the I force direction.

As shown in Fig. 1, this is the position inside the reading device where the insertion of the cartridge cover (2) into the reading device is almost completed, and is the position inside the reading device for driving the disk 3 and reading recorded information on the disk 3. A groove 1 is made in the lower part of the guide rail 6-2 from the side surface 6e side of the guide rail 6-2 to a portion that does not block the opening 18 made in the bottom surface 17 of the guide rail 6-2.
A slide plate 10 passing through the guide rail 6-2 and extending perpendicularly to the guide rail 6-2 is installed so as to slide on the bottom surface 17. Note that the groove 19 is the groove part 6a of the guide rail 6-2.
It does not interfere with the lower surface 6b of , but is opened below the lower surface 6b.

As shown in FIG. 3, such a slide plate 10 includes:
When the disc caddy is inserted into the reading device, the disc caddy is placed in parallel contact with the side surface 2e of the fixing portion 2C of the cartridge insert 2 housed in the cartridge cover 1.
In the slide plate 10, a contact portion 10 is bent in the vertical direction from the extension end portion of the flat plate portion 10b that slides on the bottom surface 17.
A is provided. Also, the side surface 6 of the guide rail 6-2
On the e side, the slide plate IO is bent in the vertical direction along the side surface 6e, and then bent and extended in an L-shape toward the insertion opening of the disc caddy along the side surface 6e. The back surface 10d of the L-shaped portion lOc located on the side surface 6e side is
It slides while contacting the side surface 6e. Furthermore, a pin 14 having a conical shape, for example, is provided approximately at the center of the end portion 10r of the cross-shaped shadow portion 10c so as to protrude from the surface 10e.

Such a slide plate IO moves in the direction of arrow E1 as shown in FIG. 4 when the fixed part 2c of the cartridge insert 2 of the inserted disc caddy comes into contact with the contact part 10a. Therefore, the pin 14 also moves in the direction of arrow E1. Note that since the slide plate 10 is urged in the direction of arrow E2 by a spring or the like, it automatically returns to its original position when the disc caddy is taken out from the reading device. Also, when the slide plate lO is near its original position,
That is, when the contact portion 10a of the slide plate 10 is located near the end position in the direction of the arrow E2, the outer circumferential surface of the pin 14 touches the bent portion of the incorrect insertion prevention plate 9, as shown by the two-dot chain line in FIG. 16b so as to come into contact with the pin sliding surface 16d,
On the other hand, when the abutting portion 10a of the slide plate IO is located near the end in the direction of the arrow E1, the L-shaped portion 10c of the slide plate 10 moves in parallel, and the pin 14 moves in parallel to the pin 14 as shown by the solid line in FIG. L so that it comes off the sliding surface 16d.
The length of the glyph portion 10c is set.

Furthermore, as shown in FIG. 3, while the pin 14 is in contact with the sliding surface 16d, the incorrect insertion prevention plate 9 is held at the arrow D2 position against the biasing force of a spring or the like, so that the pin 14 is The pin 14 and the sliding surface 16d are installed in relation to each other so that the incorrect insertion prevention plate 9 can be moved in the direction of the arrow DI force by the biasing force of a spring or the like when it comes off the sliding surface 16d.

The operation of the disk caddy erroneous insertion prevention device configured as described above will be described below.

When no disk is inserted into the disk reading device, the slide plate IO is positioned at the end in the direction of arrow E2 due to a spring or the like, so the pin 14 of the slide plate IO is positioned on the pin sliding surface as shown in FIG. 16d, and the erroneous insertion prevention plate 9 is located at the retracted position, which is the end in the direction of arrow D2. Therefore, as shown in FIG. 5, only the front and back detection plates 8 are positioned in the disc caddy insertion opening of the reading device so as to abut against the fixed portion 2c of the disc caddy into which the disc caddy is inserted. When the disc caddy is inserted into the insertion slot without making a mistake with the front and back sides of the disc caddy, the front/back detection plate 8 moves in the direction of arrow C as the disc caddy is inserted, as described above, and the disc caddy is inserted into the reading device. It is inserted into the reading device while being guided by the grooves 6a of the left and right guide rails 6 provided. Incidentally, if an attempt is made to insert the disc caddy into the reading device by mistake, the insertion of the disc caddy is prevented by the front/back detection plate 8 as described above.

As the disc caddy advances within the reading device in this manner, the fixed portion 2C of the disc caddy comes into contact with the contact portion 10a of the slide plate IO, and as the disc caddy advances, the slide plate IO is pushed in the direction of the arrow E1.

Therefore, the pin 14 provided on the slide plate 10 is
Bent portion 16b integrally formed with incorrect insertion prevention plate 9
The pin slides in the direction of arrow E1 on the pin sliding surface 16d. When the disk caddy has almost finished being inserted into the reading device, the pin 14 comes off the pin sliding surface 16d. Therefore, since the incorrect insertion prevention plate 9 is biased by a spring in the direction of the arrow DI force, it rotates in the direction of the arrow D1 and comes into contact with the upper surface 1a of the cartridge cover 1 being inserted. When the disc caddy is inserted all the way, the fixing portion 2c of the disc caddy engages with the fixing claws 12, 13 provided in the reading device, and the cartridge insert 2 is fixed in the reading device. Even in this state, the end of the cartridge cover 1 slightly protrudes from the insertion opening, so the erroneous insertion prevention plate 8 remains in contact with the upper surface 1a of the cartridge cover 1. Then, only the cartridge cover 1 is taken out from the reading device, but at the moment the cartridge cover 1 comes out from the insertion opening of the reading device, the incorrect insertion prevention plate 9 that had been in contact with the top surface of the cartridge cover 1 until then is attached with a spring or the like. The insertion opening is blocked by the front and back detection plates 8 and the incorrect insertion prevention plate 9 because the front and back detection plates 8 similarly return to their original positions. In this way, when the disc 3 is loaded into the reading device, the insertion slot is blocked by the front/back detection plate 8 and the erroneous insertion prevention plate 9.

If you accidentally try to insert a new disc caddy containing a disc into the reading device when the insertion slot is blocked, first of all, if you try to insert the disc with the front and back sides of the disc incorrectly inserted, As described above, the fixing portion 2c of the disc caddy interferes with the projection 8a of the front/back detection plate 8, so the disc caddy cannot be inserted into the reading device.

When the disc caddy is inserted into the reading device with the disc facing correctly, as shown in FIG. As mentioned above, the fixing part 2c
The notch 2d provided in the notch 2d does not interfere with the fixing part 2c, but as described above, the notch 2d is provided only on one side of the fixing part 2c, so the notch 2d does not interfere with the fixing part 2c.
The end surface 2f of the fixing part located above and the end surface 9d of the protrusion 9a of the incorrect insertion prevention plate 9 interfere in a substantially parallel manner, and the incorrect insertion prevention plate 9 cannot be rotated in the direction of arrow D2, so that the disk caddy is still read. It cannot be inserted into the device.

On the other hand, when attempting to insert the cartridge cover l into the insertion slot of the reading device in order to take out the disc 3 installed in the reading device, the disc opening of the cartridge cover l is inserted as shown in Fig. 2. On the left and right sides, as a standard standard for cartridge covers, U-shaped notches 1c with semicircular tips are formed at the same locations on the top surface 1a and back surface 1b of the cartridge cover ■, extending in the disk insertion direction. This notch 1c corresponds to the position of the protrusion 8a formed on the front/back detection plate 8 and the protrusion 9a formed on the incorrect insertion prevention plate 9, so as shown in FIG. During insertion, the end surface 1d of the disc entrance/exit of the cartridge cover 1 does not interfere with the end surfaces gc, 9d of the projections 8a, 9a, respectively. On the other hand, in the portion where the projections 8a and 9a are not present, the end face 1d of the entrance/exit of the cartridge cover l is
It comes into contact with the inclined surface 8b of the front/back detection plate 8 and the inclined surface 9b of the erroneous insertion prevention plate 9. However, each of the above-mentioned inclined surfaces 8b
and 9b are both narrower toward the insertion direction of the cartridge cover 1, so that when the cartridge cover 1 is inserted, the front/back detection plate 8 rotates in the direction of arrow C.
The incorrect insertion prevention plate 9 rotates in the direction of arrow D2. Therefore, the cartridge cover 1 has a front/back detection plate 8 and an incorrect insertion prevention plate 9.
It is inserted into the reading device while being pushed apart. Also, at this time, the incorrect insertion prevention plate 9 rotates in the direction of arrow D2, so that the eighth
As shown in the figure, the bent portion 16b integrally formed with the erroneous insertion prevention plate 9 rotates in the direction of arrow D2 about the support pin 20.

In this way, when the disc 3 is installed in the reading device, the disc caddy cannot be inserted into the reading device, but the cartridge cover 1 can be inserted. Therefore, the inserted cartridge cover 1
The disc 3 loaded in the reading device can be stored inside again.

Next, after the disc 3 is stored in the cartridge cover 1, the cartridge cover 1 and the cartridge insert 2 are
The combined disc caddy is taken out of the reading device, but at this time, the abutment part 10a of the slide plate 10, which the fixing part 2c of the cartridge insert 2 is in contact with, is moved by the restoring force of a spring or the like to the above-mentioned position. As the fixed portion 2C moves, it moves in the direction of arrow E1 as shown in FIG. Therefore, as shown in FIG. 9, the outer circumferential surface of the pin I4 provided on the slide plate lO is aligned with the arrow D as described above.
After contacting the pin sliding surface 16d of the bent portion 16b rotated in two directions, the pin sliding surface 16d is slid to a predetermined position. Therefore, after the disc caddy is taken out from the reading device, the front/back detection plate 8 and the incorrect insertion prevention plate 9 return to the state shown in FIG.
is held in the direction of arrow D2 by pin 14.

In this way, when a disc is installed in the reading device, the incorrect insertion prevention plate 9 prevents the insertion of a new disc caddy, thereby preventing damage to the disc already installed in the reading device, and preventing insertion of a new disc caddy. It is possible to prevent dust from forming inside the reading device due to an attempt to forcefully insert a disc caddy.

As described in detail above, according to the present invention, when a disc is installed in the reading device, the insertion prevention plate prevents a new disc caddy from being inserted into the reading device. As a result, the disc loaded in the reading device will not be damaged by inserting a new disc caddy, and dust will not be generated.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the structure of an embodiment of the disk caddy erroneous insertion prevention device of the present invention, FIG. 2 is a partially enlarged perspective view of the erroneous insertion prevention plate etc. shown in FIG. 1, and FIG. Figure 4 for explaining the operation of the incorrect insertion prevention plate shown in Figure 1.
The figure is a perspective view showing the structure of the slide plate shown in Figure 1,
9 to 9 are diagrams showing the operation of the incorrect insertion prevention device shown in FIG. 1, FIG. 1O is a perspective view showing the cartridge insert, FIG. 11 is a perspective view showing the cartridge cover, and FIG.
FIG. 2 is a perspective view showing a state in which a disc is housed in the cartridge cover, and FIG. 13 is a perspective view showing the configuration of a reading device into which a conventional disc caddy is inserted.

Claims (1)

[Claims] (1) Insert the disc caddy with the disc containing information stored inside the cartridge cover to the specified position in the reading device, and then remove the cartridge cover from the reading device to insert the stored disc into the reading device. In the disc caddy mis-insertion prevention device used in the disc caddy-in mechanism, when a disc is installed in the reading device, when an attempt is made to insert the cartridge cover into the reading device, the end face of the cartridge cover is An abutment portion that is formed by protruding from the slanted surface and having a side surface that comes into contact with the slanted surface to enable insertion of the cartridge cover and a side surface that comes into contact with the end surface of the disc caddy in parallel with the end surface of the disc caddy when the disc caddy is inserted into the reading device. an erroneous insertion prevention plate having a disc caddy inserted into the reading device; and the insertion prevention plate is movable from a retracted position to a disc caddy insertion slot of the reading device as the disc caddy is inserted into the reading device; An apparatus for preventing incorrect insertion of a disk caddy, comprising: an incorrect insertion preventing plate moving means for holding the incorrect insertion preventing plate in the retracted position upon removal.