JP2002163852A - Recording medium loading mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent double loading of more compact and secure cartridges for recording medium by providing a rotary shutter mechanism, to a reproducing apparatus for the cartridge housed recording medium. SOLUTION: The reproducing apparatus is characterized in that the rotary shutter is provided at the loading port for inserting the cartridge housed recording medium, which enables/prevents insertion of the cartridge housed recording medium from the loading port, by its rotation in a plane perpendicular to the direction of inserting the cartridge housed recording medium.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium insertion mechanism, and more particularly to a changer deck insertion mechanism for accommodating and playing a plurality of cartridge storage type recording media such as mini disks (hereinafter referred to as MDs).

[0002]

2. Description of the Related Art FIGS. 6A and 6B are external views of a mechanism for preventing erroneous insertion of a recording medium. FIG. 6A is a cross-sectional view of a double loading prevention shutter section (D), FIG. Shows a loading prevention state diagram, and (b) shows a detailed view of an erroneous insertion prevention guide portion (A, B). The insertion preventing mechanism includes a magazine 400 for storing and reproducing the MD 300, a lifting device 200 that moves up and down along a tray stacked on the magazine, a transport driving mechanism 220 that transports the MD 300 in the insertion / ejection direction, and the like. A mechanism provided in the apparatus has a function of preventing double loading of the MD 300 and preventing incorrect insertion in the wrong direction.

The double loading prevention shutter section (D) includes a double loading prevention shutter 1, guide pins 2a and 2b, vertical movement pressing pins 3a and 3b, springs 5a and 5b, and the like. The double loading prevention shutter 1 is provided on the front of the MD insertion slot of the changer deck main body 100 and moves up and down in conjunction with the lifting mechanism 200 to open and close the MD insertion slot. The double loading prevention shutter 1 has a rectangular shape, a rectangular insertion hole at the center upper surface, and projections 1Da and 1Db holding springs 5a and 5b for pushing up the left and right front surfaces. The vertical movement guide holes 1Ba, 1Bb and the vertical movement pressing hole 1C
a and 1Cb are provided respectively.

The guide pins 2a and 2b are attached and fixed to the front plate 101 of the changer deck main body 100, and the double loading prevention shutter 1 is held with an E-ring 7 with a gap therebetween. Has a function of guiding the vertical movement of the The guides at this time are vertically movable guide holes 1Ba provided on the left and right of the double loading prevention shutter 1, respectively.
1Bb.

The vertical movement pressing pins 3a and 3b are attached and fixed to the front plate 201 of the lifting mechanism 200.
The vertical movement pressing holes 1Ca and 1Cb provided in the double loading prevention shutter 1 are pressed so as to be interlocked with the vertical movement of the shutter. An escape hole is formed in the front plate 101 of the changer deck body 100 to allow the vertically moving pressing pins 3a and 3b to move.

The springs 5a and 5b are hooked and held by projections 101a and 101b provided on the inside of the left and right sides of the front face of the MD insertion slot of the changer deck body 100 and projections 1Da and 1Db provided on the double loading prevention shutter 1. The double loading prevention shutter 1 is pushed upward from both left and right sides. As shown in the cross-sectional view of the double loading prevention shutter section (D) in FIG. 6A, in the normal loading state shown in FIG. 6A, the double loading prevention shutter 1 moves upward in conjunction with the lifting mechanism 200. The MD insertion hole 10 provided in the front plate 101 of the changer deck body 100
1A and the MD insertion hole 1A provided in the double loading prevention shutter 1 are in a normal state in which the MD insertion hole 1A coincides, and the MD 300 can be inserted. In the loading prevention state shown in FIG. 2B, the double loading prevention shutter 1 moves downward in conjunction with the lifting / lowering mechanism 200 to move the front plate 1 of the changer deck body 100.
The MD loading hole 101A provided in the MD 01 is closed by the double loading prevention shutter 1, and the double loading of the MD 300 is prevented. The width of the double loading prevention shutter 1 is substantially the same as the width of the front plate 101 of the changer deck main body 100, and furthermore, moves in parallel in the vertical direction in conjunction with the lifting / lowering mechanism 200, and almost the entire MD insertion surface. Is required.

[0007] The mis-insertion prevention guide portions (A, B) include the mis-insertion prevention guide plates 10, 20, the hook pins 11, 21, and
It comprises guide rails 12 and 22, an erroneous insertion prevention switch 13, a spring 14, and the like. The erroneous insertion prevention guide plates 10 and 20 are provided on both right and left side surfaces of the lifting mechanism 200, respectively, and guide the contact when the MD 300 is inserted. , 20 are respectively pressed against the left and right side edges of the MD 300 and pushed outward. At this time,
The mis-insertion prevention switch 13 installed on the left side is pressed, and the insertion of the MD 300 is detected. The erroneous insertion prevention guide plates 10 and 20 have a tapered surface where the MD 300 comes in contact with the guide plate. A protrusion 10 for detecting the normal insertion direction of the MD 300 is provided on the tapered surface.
a, 20a are provided. These projections 10a, 20a
6B, erroneous insertion prevention guide plates 10 and 2 as shown in FIG.
0 at the position of t2 <t1 / 2 with respect to the thickness t1,
The grooves 300a and 300b corresponding to D300 (they are provided only on one surface in the insertion direction at the position of T2 <T1 / 2 with respect to the thickness T1) are divided into front and back directions. The protrusions 10a and 20a are provided when the difference (A-B) between the horizontal dimension A and the vertical dimension B of the MD 300 is less than the moving amount of the erroneous insertion preventing guide plates 10 and 20 pushed outward.
Mis-insertion of 0 is prevented, but others cannot be prevented. The mis-insertion prevention guide plate 10 indicates the left side, and the mis-insertion prevention guide plate 20 indicates the right side.

The hook pins 11 and 12 are fixed to guide plates 10 and 20 for preventing erroneous insertion, respectively.
4 is hooked and fixed, and the erroneous insertion prevention guide plates 10 and 20 are pulled inward. The hook pin 11 indicates the left side, and the hook pin 21 indicates the right side.
The guide rails 12 and 22 are erroneous insertion prevention guide plates 10 and 2.
The rail guides the right and left movement in the right and left directions, and has a rectangular cross section and a trapezoidal groove on the upper surface side. In addition, long holes are provided to guide the movement of the hook pins 11 and 21, respectively. Further, an erroneous insertion prevention switch 13 is attached and fixed to the left guide rail 12. The guide rail 12 indicates the left side, and the guide rail 22 indicates the right side.

The erroneous insertion prevention switch 13 is attached and fixed to the left guide rail 12, and when the MD 300 is inserted, the erroneous insertion prevention guide plate 10 is pressed and moved outward, and the erroneous insertion prevention switch 13 is pressed. By this pressing operation, M
The insertion of D300 is confirmed, the transport drive mechanism operates, and M
D300 is transported and loaded. The spring 14 is hooked and fixed to the hook pins 11 and 12, respectively, and always pulls the erroneous insertion prevention guide plates 10 and 20 inward, respectively.
When the MD 300 is not loaded, the guide plates 10, 20 are prevented from being erroneously inserted.

FIG. 6 (b) Guide portion for preventing incorrect insertion (A, B)
As shown in the detailed view of FIG. 3, the MD 300 has a width A different from a height B, the width A is larger than the height B (A> B), and the groove 3
Reference numerals 00a and 300b are provided at positions where T2 <T1 / 2 with respect to the thickness T1 in one direction shown in FIG.
This figure (b) shows a normal insertion state, in which the MD 300 is inserted in the direction of the arrow, and the erroneous insertion prevention guide plates 10 and 20 are inserted.
The projections 10a and 20a provided on the
a and 300b, the MD 300 abuts against the tapered surfaces of the erroneous insertion prevention guide plates 10 and 20, and moves each of the erroneous insertion prevention guide plates 10 and 20 right and left outward. Mis-insertion prevention switch 1 installed on the left side
3 is pressed to detect the normal insertion of the MD 300. When the MD 300 is inserted upside down, or upside down, the protrusions 10a, 20a and the grooves 300a,
Since 300b does not fit, the mis-insertion prevention guide plate 10,
20 to prevent the MD 300 from being inserted.
Also, when the MD 300 is inserted in a direction perpendicular to the width A, which is different from the direction in which the width A is parallel to the insertion opening as shown in FIG. ), The erroneous insertion of the MD 300 is prevented only when the difference (A−B) between the horizontal dimension A and the vertical dimension B of the MD 300 is equal to or less than the amount of movement of the erroneous insertion prevention guide plates 10 and 20 pushed outward. However, if the vertical width B is further reduced, the MD 300 slips between the erroneous insertion prevention guide plates 10 and 20.

[0011]

As described above, in the conventional double loading prevention mechanism, the width of the double loading prevention shutter 1 is substantially the same as the width of the front plate 101 of the changer deck body 100, and Up and down movement pressing holes 1C at both left and right ends of the double loading prevention shutter 1 in conjunction with the mechanism 200.
a, 1Cb, and is vertically translated by the vertical movement pressing pins 2a, 2b, so that almost the entire MD insertion surface is required, the double loading prevention mechanism is enlarged, and the dead space is increased. There were problems such as becoming.

It is an object of the present invention to solve the above-mentioned drawbacks by providing a shutter mechanism of a lever-rotating type to achieve more compact and reliable double loading prevention.

[0013]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an insertion slot into which a recording medium stored in a cartridge is inserted / ejected, and a storage portion capable of storing a plurality of recording media in a stacked state. A reproducing unit that reproduces the cartridge-containing recording medium, the insertion port, and a vertically moving displacement in the stacking direction in a space between the storage units;
In a recording medium reproducing apparatus comprising a storage section and a lifting / lowering means for transporting the recording medium between the storage sections, the cartridge storage medium is rotated from a direction perpendicular to an insertion direction of the storage medium by rotating the storage medium. A rotary shutter for enabling / preventing insertion of the cartridge storage medium is provided. Further, the rotating shutter operates in conjunction with the elevating operation of the elevating means.

[0014]

Embodiments of the present invention will be described with reference to the drawings. FIGS. 1A and 1B show the appearance of a recording medium erroneous insertion preventing mechanism according to a first embodiment of the present invention. FIG. 1A shows a double loading preventing shutter (D), and FIG. (A,
FIG. 2B shows a detailed view of the loading detection unit (C), and FIG. FIG. 3 shows a second embodiment of the present invention. FIG. 3A is an external view of a mechanism for preventing erroneous insertion of a recording medium.
4B shows a detailed view of the mis-insertion prevention guide portions (A, B) and the loading detection portion (C), and FIG. 4 shows a structural diagram of a recording medium mis-insertion prevention mechanism. FIGS. 5A and 5B show the principle of operation of the second embodiment. FIG. 5A shows a normal state of loading, and FIG. 5B shows a state of loading prevention.

The insertion preventing mechanism comprises a magazine 400 for storing and reproducing the MD 300, an elevating device 200 that moves up and down along a tray stacked on the magazine, a transport drive mechanism 220 that transports the MD 300 in the insertion / ejection direction, and the like. A mechanism provided in an MD reproducing apparatus that has a function of preventing double loading of the MD 300 and preventing incorrect insertion in the wrong direction.

In the first embodiment shown in FIGS. 1 and 2, M
1 is an example in which the present invention is applied to an insertion mechanism of a changer deck for accommodating a plurality of cartridge-containing recording media such as D and playing. The double loading prevention shutter (D) includes a double loading prevention shutter 1, a guide pressing pin 2, a rotation pin 3,
It comprises a spring fixing A pin 4, a spring 5, a spring fixing B pin 6, and the like.

The double loading prevention shutter 1 has a rhombus shape,
A rotation hole for the rotation pin 3 is provided at a substantially central portion, a long hole for the guide pin 2 is provided on a diagonal line on the upper right side, and a spring fixing A pin 4 is mounted and fixed on a diagonal line on the lower left side. ing. The double loading prevention shutter 1 is provided in front of the MD insertion slot of the changer deck body 100, rotates in conjunction with the lifting mechanism 200, and the diagonal portion at the upper left end closes the MD insertion hole 101A. By
The MD slot is opened and closed.

The guide pressing pin 2 is attached and fixed to the front plate 201 of the lifting mechanism 200, and presses the rotation pressing hole 1a provided in the double loading prevention shutter 1 so as to be interlocked with the vertical movement of the lifting mechanism 200. And is rotated in conjunction with the lifting mechanism 200. The rotation pin 3 is attached and fixed to the front plate 101 of the changer deck main body 100, holds the double loading prevention shutter 1 with a gap by an E-ring 7, and serves as a rotation axis of the double loading prevention shutter 1. It is functioning.

The spring fixing A pin 4 is attached and fixed to the double loading prevention shutter 1, and the spring fixing B pin 6 is hooked and fixed. The spring 5 is hooked and fixed to the spring fixed A pin 4 and the spring fixed B pin 6, and has a function of pulling back in a direction opposite to the rotation direction of the double loading prevention shutter 1 which rotates in conjunction with the vertical movement of the lifting mechanism 200. are doing.

The spring fixing B pin 6 is attached and fixed to the front plate 101 of the changer deck body 100, and hooks and fixes the spring 5. FIG. 1 and FIG.
00 is inserted in the normal state, and the double loading prevention shutter 1 is linked with the lifting mechanism 200 to move the double pressing prevention shutter 1 when the guide pressing pin 2 moves upward.
Is rotated to lower the diagonal line at the upper left side, thereby opening the MD insertion hole 101A and allowing the MD 300 to be inserted. In the loading prevention state, the double loading prevention shutter 1 is rotated in conjunction with the elevating mechanism 200 to rotate the double loading prevention shutter 1 when the guide pressing pin 2 moves downward, so that the double loading prevention shutter 1 is positioned diagonally on the upper left side. Part moves upward, and FIG.
The double loading prevention shutter 1 shown in the external view of FIG. 1 is in a two-point oblique line state 1M, the MD loading hole 101A is closed by the double loading prevention shutter 1, and the double loading of the MD 300 is prevented.

Since the double-load prevention shutter 1 employs a shutter mechanism of a lever rotation type, more compact and reliable double-load prevention is achieved. The mis-insertion prevention guide portions (A, B) are
0, hook pins 11, 21, guide rails 12, 2
2, mis-insertion prevention switches 13, 23, spring 14,
The loading detection unit (C) includes a loading detection leaf spring 30, a loading detection switch 31, a switch holder 32, and the like.

The erroneous insertion prevention guide plates 10 and 20 are provided on both right and left sides of the elevating mechanism 200, respectively, and guide the contact when the MD 300 is inserted. The guide plates 10 and 20 are respectively pressed against the left and right side edges of the MD 300 to be pushed outward, and the erroneous insertion prevention switches 13 and 23 installed on the left and right side surfaces, respectively, are pressed to move the MD 300.
Is detected. The misinsertion prevention guide plates 10 and 2
Reference numeral 0 indicates that the surface of the MD 300 that is in contact with the tape 300 is formed in a tapered shape. Further, projections 10a and 20a for detecting the normal insertion direction of the MD 300 are provided on the tapered surface so as to face the normal insertion direction. This projection 10
As shown in FIG. 1B, a and 20a are provided at positions t2 <t1 / 2 with respect to the thickness t1 of the erroneous insertion prevention guide plates 10 and 20, and grooves 300a and 300b corresponding to the MD 300 are provided.
(It is provided only on one surface in the insertion direction at the position of T2 <T1 / 2 with respect to the thickness T1). The mis-insertion prevention guide plate 10 indicates the left side, and the mis-insertion prevention guide plate 20 indicates the right side.

The hook pins 11 and 12 are fixed to guide plates 10 and 20 for preventing erroneous insertion, respectively.
4 is hooked and fixed, and the erroneous insertion prevention guide plates 10 and 20 are pulled inward. The hook pin 11 indicates the left side, and the hook pin 21 indicates the right side.
The guide rails 12 and 22 are erroneous insertion prevention guide plates 10 and 2.
The rail guides the right and left movement in the right and left directions, and has a rectangular cross section and a trapezoidal groove on the upper surface side. In addition, long holes are provided to guide the movement of the hook pins 11 and 21, respectively. Further, erroneous insertion prevention switches 13 and 23 are attached and fixed.

The guide rail 12 indicates the left side, and the guide rail 22 indicates the right side. The erroneous insertion prevention switches 13 and 23 are attached and fixed to the guide rails 12 and 22, respectively.
0 and 20 are pushed outward, respectively, and the erroneous insertion prevention switches 13 and 23 are pushed. By this pressing operation, all of the insertion detection signal of the MD 300 and the signal detected by the loading detection switch 31 are turned ON, and this detection signal is transmitted to the transport drive mechanism 220 shown in FIG. 2, and the transport drive mechanism 220 operates. , MD300 are loaded.

The spring 14 has hook pins 11 and 12
Guide plates 10, which are hooked and fixed to
Each of the guide plates 20 is always pulled inward and pushed back outward when the MD 300 is inserted. When the MD 300 is not loaded, the erroneous insertion prevention guide plates 10 and 20 are always pulled inward. The loading detection leaf spring 30 is a lifting mechanism 2
00, which is attached and fixed to the inner side of the bottom plate substantially at the center, is formed of a spring material, is bent by the insertion pressure of the MD 300, presses the loading detection switch 31, and detects the insertion of the MD 300.

The loading detection switch 31 is attached and fixed to a switch holder 32, and when the MD 300 is inserted, the pressing operation is performed via the loading detection leaf spring 30 to detect the insertion of the MD 300. The switch holder 32 holds the lifting mechanism 20.
A load detection switch 31 is mounted and fixed on the inner side of the bottom plate substantially at the center of the reference numeral 0.

As shown in FIG. 1 and FIG. 1 (a), a detailed view of the mis-insertion prevention guides (A, B) and the loading detector (C), and FIG. No,
The width A is larger than the height B (A> B), and the groove 300
a and 300b are provided at one position on the front surface in the normal insertion direction shown in FIG. 2B at positions where T2 <T1 / 2 with respect to the thickness T1. This figure (b) shows a normal insertion state, in which the MD 300 is inserted in the direction of the arrow, and the projections 10a, 10a provided on the erroneous insertion prevention guide plates 10, 20, respectively.
After the 20a has been fitted into the grooves 300a, 300b, the MD 300 abuts against the tapered surfaces of the erroneous insertion prevention guide plates 10, 20, and moves each of the erroneous insertion prevention guide plates 10, 20 to the left and right outward directions. Then, the erroneous insertion prevention switches 13 and 23 installed on both the left and right sides are pressed to operate the MD3.
00 normal insertion is detected.

When all the signals detected by the erroneous insertion prevention switches 13 and 23 and the signal detected by the loading detection switch 31 are turned ON, the signal is transmitted to the transport drive mechanism 220 shown in FIG. To the MD30
0 is transported in the insertion direction. When the MD 300 is inserted with the insertion direction upside down and upside down, the protrusions 10a, 20a and the grooves 300a, 300b do not fit, and are blocked by the erroneous insertion prevention guide plates 10, 20, and the MD 300 is inserted. Insertion is prevented. In addition, MD300
When the MD is inserted in a direction perpendicular to the width A of the MD 300 and the insertion slot, the insertion direction of the MD 300 is different from that in FIG. 2B, the signals detected by the erroneous insertion prevention switches 13 and 23 and the loading detection switch 31 are All of them are not turned on, and one or both of the erroneous insertion prevention switches 13 and 23 are turned off and erroneous insertion is detected. This erroneous insertion detection signal is transmitted to the transport drive mechanism 220 shown in FIG. 2, and the MMD 300 is carried out in the direction opposite to the insertion direction.

In the second embodiment shown in the external view of FIG. 3, the structural view of FIG. 4, and the operation principle diagram of FIG. 5, the present invention is applied to an insertion mechanism of a changer deck for accommodating and playing a plurality of cartridge-containing recording media such as MDs. Is different from the first embodiment. In the second embodiment, the double loading prevention shutter is not provided on the front surface of the MD insertion slot, but is provided on the erroneous insertion prevention guide, and the function is improved.

The double loading prevention shutter portion includes stopper blocks 42 and 52, slide holders 43 and 53, pressing slide pins 44 and 54, springs 45 and 55, and the like. The stopper blocks 42 and 52 are fitted and held respectively on slide holders 43 and 53 attached and fixed to the left and right sides of the changer deck body 100, and are pushed inward by springs 45 and 55, respectively. The stopper blocks 42 and 52 are tapered on the opposite side surfaces of the shaft portions fitted and held in the slide holders 43 and 53, and the lifting mechanism 2
Pressing slide pin 4 attached and fixed to the bottom of 00
4, 54, and are each moved outward. The stopper blocks 42 and 52 have L
The protrusions 42a and 52a are provided,
Is in the lower position, which is not the normal insertion state, and MD30
When 0 is inserted, the springs 45 and 55 are pressed and bent, but the tips of the springs 45 and 55 hit the L-shaped protrusions 42a and 52a provided on the stopper blocks 42 and 52, respectively, and the springs 45 and 55 Of the MD 300 is prevented, and double insertion of the MD 300 is prevented.

The slide holders 43 and 53 are attached and fixed to both left and right side surfaces 102 and 103 of the changer deck main body 100, form a circular fitting hole in the center portion, and fit and hold the stopper blocks 42 and 52 respectively. The springs 45 and 55 are supported and supported, respectively. The pressing slide pins 44 and 54 are attached and fixed to the bottom surface 202 of the lifting mechanism 200, and the stopper blocks 42 and 5 are provided.
When the lifting mechanism 200 moves upward in conjunction with the lifting mechanism 200, the stopper blocks 42 and 52 move outward in both left and right directions.

The springs 45 and 55 are supported and supported by the slide holders 43 and 53 and the stopper block 4
2, 52 are always pushed inward. The operation of the normal state in which the MD 300 can be inserted will be described with reference to FIGS. 3, 4, and 5. When the pressing slide pins 44 and 54 move upward in conjunction with the elevating mechanism 200, the double mounting is performed. The stopper blocks 42 and 52 of the loading prevention guide portion are provided with the pressing slide pins 44 and 54, respectively.
Is pressed (regulated) by the spring 45,
It moves outward on both left and right sides against the spring force of 55, and is in a state of being expanded. When the MD 300 is inserted in this state, the leaf springs 40 and 50 are pressed against each other and are bent outward, but the stopper blocks 42 and 52 are moved.
Since it is free in the left-right direction without hitting, the insertion becomes possible. On the other hand, the operation of the loading prevention state (the state in which the elevating mechanism 200 is moving downward) will be described. When the pressing slide pins 44 and 54 move downward in conjunction with the elevating mechanism 200, double loading is performed. The stopper blocks 42, 52 of the prevention guide portion are moved inward on both left and right sides by the spring force of the springs 45, 55 without being restricted by the pressing slide pins 44, 54. When the MD 300 is inserted in this state, the leaf spring 4
Each of 0 and 50 is pressed and abutted to bend outward. However, since it hits the L-shaped projections 42a and 52a provided on the stopper blocks 42 and 52, the outward movement is restricted, and the further movement is performed. Cannot be performed, and the insertion of the MD 300 is blocked, so that double loading of the MD 300 is prevented. Thereby, more compact and reliable double loading prevention can be achieved without using the lever-rotating shutter mechanism provided in the first embodiment.

The mis-insertion prevention guide portions (A, B) include the mis-insertion prevention guide leaf springs 40, 50 and the mis-insertion prevention switch 4.
The loading detection section (C) includes a loading detection leaf spring 30, a loading detection switch 31, a switch holder 32, and the like in the lifting mechanism. The mis-insertion prevention guide leaf springs 40 and 50 are provided on both left and right sides of the changer deck body 100, respectively.
When the MD 300 is inserted, it is abutted and pressed, and when the MD 300 is inserted in a regular state, the left and right wrong insertion prevention guide leaf springs 40, 5 are provided.
0 is pressed against the left and right side edges of the MD 300 to be bent outward, and the erroneous insertion prevention switches 41 and 51 provided on the left and right sides are respectively pressed by the MD.
The insertion of 300 is detected. The erroneous insertion prevention guide leaf springs 40 and 50 have a tapered surface where the MD 300 comes into contact, and are pressed and bent outward when the MD 300 is inserted. A projection 40 for detecting the normal insertion direction of the MD 300 is provided on the tapered surface.
a, 50a are provided facing each other in the normal insertion direction.
As shown in FIG. 3A, the projections 40a and 50a have a width t1 <t2 <
A groove 300 provided at the position of t1 / 2 and corresponding to the MD 300
a, 300b (provided only on one surface in the insertion direction at the position of T2 <T1 / 2 with respect to the thickness T1). The mis-insertion prevention guide leaf spring 40 indicates the left side, and the mis-insertion prevention guide leaf spring 50 indicates the right side.

The mis-insertion prevention switches 41 and 51 are mounted and fixed respectively on the left and right side surfaces of the changer deck body 100. When the MD 300 is inserted, the left and right mis-insertion prevention guide leaf springs 40 and 50 respectively contact the left and right side edges of the MD 300. The switches 41 and 51 are pressed and bent outward, and the erroneous insertion prevention switches 41 and 51 are pressed. By this pressing operation, M
The insertion detection signal of D300 and the signal detected by the loading detection switch 31 are all turned on, and the detection signal is transmitted to the transport drive mechanism 220 shown in FIG. 4, the transport drive mechanism 220 operates, and the MD 300 transports. Will be loaded.

The loading detection leaf spring 30 is attached and fixed to the inside of the bottom plate substantially at the center of the elevating mechanism 200, forms a spring material, is bent by the insertion and pressing of the MD 300, and presses the loading detection switch 31. The insertion of the MD 300 is detected. The loading detection switch 31 is attached and fixed to the switch holder 32, and when the MD 300 is inserted, performs a pressing operation via the loading detection leaf spring 30 to detect the insertion of the MD 300.

The switch holder 32 is attached and fixed to the inside of the bottom plate substantially at the center of the lifting / lowering mechanism 200, and the load detection switch 31 is attached and fixed. The elevating mechanism 200 is provided with notches 203 for passing the stopper blocks 42 and 52 and the erroneous insertion prevention guide leaf springs 40 and 50 into the elevating mechanism 200. FIG. 3 is an external view, FIG. 3 (a) is a detailed view of an erroneous insertion prevention guide section (A, B), FIG. 3 (b) is a detailed view of a loading detection section (C), and FIG. 4 is a structural view and FIG. As shown in the figure, the MD 300 has a width A different from a height B, the width A is larger than the height B (A> B),
Reference numerals 0a and 300b are provided at one location on the front surface in the normal insertion direction shown in FIG. 3A, at a position where T2 <T1 / 2 with respect to the thickness T1. This figure (a) shows a normal insertion state, in which the MD 300 is inserted in the direction of the arrow, and the projections 40a, 50a provided on the erroneous insertion prevention guide leaf springs 40, 50 for detecting the normal insertion direction. Is groove 3
00a, 300b, the tapered surfaces of the erroneous insertion prevention guide leaf springs 40, 50 are formed so as to abut against the MD 300, and are pressed and abutted outward by the insertion of the MD 300 to be bent outward. Pressing the erroneous insertion prevention switches 41 and 51 installed on the left and right sides,
0 normal insertion is detected.

When the signals detected by the erroneous insertion prevention switches 41 and 51 and the signal detected by the loading detection switch 31 are all turned on, this signal is transmitted to the transport drive mechanism 220 shown in FIG. To the MD30
0 is transported in the insertion direction. When the MD 300 is inserted with the insertion direction upside down and upside down, the projections 40a, 50a and the grooves 300a, 300b do not fit, and are blocked by the erroneous insertion prevention guide leaf springs 40, 50, and the MD 300 is blocked. Is prevented from being inserted. In addition, MD30
In the case where the insertion direction of the MD 0 is different from that of FIG. 3A and the MD 300 is perpendicular to the width A and the insertion opening, the erroneous insertion prevention switches 41 and 51 and the loading detection switch 3 are used.
All of the signals detected by 1 are not turned on, and one or both of the erroneous insertion prevention switches 41 and 51 are turned off and erroneous insertion is detected. This erroneous insertion detection signal is transmitted to the transport drive mechanism 220 shown in FIG. 2, and the MMD 300 is carried out in the direction opposite to the insertion direction.

[0038]

As described above, according to the double loading prevention mechanism of the present invention, a rotary shutter is provided at the insertion port, so that a small and more reliable double loading without dead space is provided. Prevention can be achieved.

[Brief description of the drawings]

FIG. 1 is an external view of an erroneous insertion preventing mechanism according to a first embodiment of the present invention.

FIG. 2 is a structural diagram of a first embodiment of a mechanism for preventing erroneous insertion of a recording medium in the embodiment of the present invention.

FIG. 3 is an external view of a recording medium erroneous insertion preventing mechanism according to a second embodiment of the present invention.

FIG. 4 is a structural diagram of an erroneous insertion preventing mechanism according to a second embodiment of the present invention;

FIG. 5 is an operation principle diagram of the second embodiment.

FIG. 6 is an external view of a conventional recording medium erroneous insertion prevention mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Double loading prevention shutter 2 ... Guide pin 3 ... Rotating pin 4 ... Spring fixed A pin 5 ... Spring 6 ... Spring fixed B pin 10, 20 ... Mis-insertion prevention guide plate 11, 21 ... Hook pin 12, 22 ... Guide rail 13, 23 ... Mis-insertion prevention switch 14 ... Spring 30 ... Loading detection leaf spring 31 ... Loading Detection switch 32: Switch holder 40, 50 ... Mis-insertion prevention guide leaf spring 41, 51 ... Mis-insertion prevention switch 42, 52 ... Stopper block 43, 53 ... Slide holder 44 ..Pressing slide pins 45 ... springs

Claims (2)

[Claims] An insertion slot into which a cartridge-containing recording medium is inserted / ejected; a storage unit capable of storing a plurality of recording media in a stacked state; a reproducing unit that reproduces the cartridge-containing recording medium; A recording medium reproducing apparatus, comprising: an insertion port, and a lifting unit that moves up and down in the stacking direction in a space between the storage units in the stacking direction and that conveys the recording medium between the insertion port, the storage unit, and the storage unit. The recording medium according to claim 1, further comprising: a rotating shutter that rotates in a plane perpendicular to a direction in which the cartridge-containing recording medium is inserted, thereby enabling / blocking insertion of the cartridge-containing recording medium from the insertion port. Insertion mechanism. 2. The apparatus according to claim 1, wherein the rotating shutter operates in conjunction with the elevating operation of the elevating means.