JP2000021068A - Recording medium inserting mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To compactly and surely prevent a recording medium (called as MD hereafter) from being doubly mounted and being inserted in the erroneous direction in an MD inserting mechanism by providing a shutter mechanism utilizing a lever rotation system and insertion detecting switches, etc., at the center part and both left/right sides surfaces of an elevation mechanism around an MD inserting port. SOLUTION: In this MD inserting mechanism, the shutter 1 utilizing the lever rotation system turning for opening/closing linked with the vertically moving elevation mechanism at the time of exchanging the MD is provided on the front surface of the port for inserting the MD, then the double mounting of the MD is prevented by opening/closing the inserting port, and also the MD is prevented from being inserted in the erroneous direction by providing an insertion detecting means with the insertion detecting switch 31 arranged at the center part of the elevation mechanism around the MD inserting port and a means for detecting the horizontal width of the MD which is the proper inserting direction, by the insertion detecting switches 13, 23 arranged on the both left/right sides surfaces of the elevation mechanism around the inserting port.

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. 6 (a) and 6 (b) are external views of a recording medium erroneous insertion preventing mechanism. FIG. 6 (a) is a sectional view of a double loading preventing 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). This insertion prevention mechanism houses MD300,
A mechanism provided in the MD reproducing apparatus including a magazine 400 to be reproduced, 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. It has the function of preventing double loading and preventing incorrect insertion.

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 in front of the MD insertion slot of the changer deck main body 100 and moves up and down in conjunction with the elevating 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 side surfaces. The guide holes 1Ba, 1Bb for vertical movement and the hole 1C for vertical movement pressing
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 a gap by an E-ring 7, and the double loading prevention shutter 1 is provided. 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 vertically moving pressing pins 3a and 3b are mounted and fixed on the front plate 201 of the elevating mechanism 200.
The vertical movement pressing holes 1Ca, 1Cb provided in the double loading prevention shutter 1 are pressed so as to be linked with the vertical movement of 0, and the shutter is vertically moved in conjunction with the lifting mechanism 200. 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 elevating mechanism 200, respectively, and guide the abutment when the MD 300 is inserted.
0 and 20 are respectively pressed against the left and right side edges of the MD 300 and pushed outward. At this time, the switch 13 provided on the left side is pressed and the insertion of the MD 300 is detected. The surfaces of the guide plates 10 and 20 that abut against the MD 300 are formed in a tapered shape.
Is pushed and pushed outward by the insertion. In addition, projections 10a and 20a for detecting the normal insertion direction of the MD 300 are provided on the tapered surface.
As shown in FIG. 6B, the protrusions 10a and 20a are provided at positions of t2 <t1 / 2 with respect to the thickness t1 of the guide plates 10 and 20, and the 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 difference (AB) between the horizontal dimension A and the vertical dimension B of the MD 300 is a difference between the projections 10a and 20a.
20 when it is less than the amount of movement of
The D300 is prevented from being inserted in the wrong direction, but cannot be prevented otherwise. The guide plate 10 shows the left side, and the guide plate 20 shows the right side.

The hook pins 11 and 21 are attached to and fixed to the guide plates 10 and 20, respectively, hook and fix the spring 14, and pull the guide plates 10 and 20 inward. The hook pin 11 indicates the left side, and the hook pin 21 indicates the right side. Guide rail 12,
Reference numeral 22 denotes a rail for guiding the guide plates 10 and 20 to move in the left-right direction. The cross-sectional shape is rectangular, and a trapezoidal groove is provided on the upper surface side. Also, long holes for guiding the movement of the hook pins 11 and 21 are provided.
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 the insertion of the MD 300 causes the guide plate 10 to be depressed and moved outward, whereby the erroneous insertion prevention switch 13 is depressed. By this pressing operation, MD30
0 is confirmed, the transport drive mechanism 220 operates, and M
D300 is transported and loaded. The spring 14 is hooked and fixed to the hook pins 11 and 21, respectively, and always pulls the erroneous insertion prevention guide plates 10 and 20 inward, and is extended by inserting the MD 300. However, when the MD 300 is not loaded, the erroneous insertion prevention is always performed. Guide plates 10, 20
Is pulled back inward.

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 projections 10a, 20a provided on the guide plates 10, 20 are respectively provided with the grooves 300a, 300b.
, The MD300 abuts against the tapered surfaces of the guide plates 10 and 20, and moves each of the guide plates 10 and 20 to the left and right outward directions to thereby prevent the erroneous insertion prevention switch installed on the left side. 13 is pressed, and the normal insertion of the MD 300 is detected. When the MD 300 is inserted upside down or upside down, the protrusions 10a, 2
Oa and grooves 300a and 300b do not fit, and are blocked by guide plates 10 and 20 to prevent MD 300 from being inserted. Further, when the MD 300 is inserted in a direction perpendicular to the insertion direction, which is different from the direction in which the width (A) is parallel to the insertion opening as shown in FIG. The difference (AB) between the horizontal dimension A and the vertical dimension B of the MD 300 is when the guide plate 10
M only when it is less than the amount of movement pushed in the outward direction of 20
Although the D300 is prevented from being inserted in the wrong direction, if the vertical width (B) is further reduced, the MD30 is inserted between the guide plates 10 and 20.
0 slips through.

[0011]

As described above, in the conventional double loading prevention mechanism, the width of the loading prevention shutter 1 is substantially the same as the width of the front plate 101 of the changer deck body 100, and the width of the lifting mechanism 200 is reduced. Up and down movement pressing holes 1Ca, 1Cb at both left and right ends of the loading prevention shutter 1 in conjunction with the shutter.
And the vertical movement pressing pins 2a and 2b are used to move up and down in parallel, so that almost the entire MD insertion surface is required, the double loading prevention mechanism becomes large, and the dead space becomes large. There was a problem. Further, in the erroneous direction insertion prevention mechanism, when the MD is inserted in a normal state in which the width (A) of the MD is parallel to the insertion slot, the groove 30 provided in the MD 300 is provided.
Oa and 300b and the projections 10a and 20a provided on the guide plates 10 and 20 prevent incorrect insertion in the reverse insertion and the front / reverse insertion without any problem.
In the case where the width (A) of D is inserted at a right angle to the insertion slot, the difference (AB) between the width (A) and the height (B) of MD is inserted.
When is larger than the amount of movement of the guide plates 10 and 20 pushed outward, erroneous insertion is not prevented, and the MD enters the deck. Even when the dimensional difference (A−B) is smaller than the amount of movement to be pushed in, the erroneous insertion is not completely prevented and the MD is not inserted in the deck.
There was a problem of entering.

An object of the present invention is to solve the above-mentioned drawbacks by providing a shutter mechanism of a lever-rotating type to achieve a more compact and reliable prevention of double loading, and a central portion of a lifting mechanism near the MD insertion slot. In addition, an insertion detection switch or the like is provided on both left and right sides to more reliably and safely prevent the MD from being erroneously inserted.

[0013]

In order to achieve the above object, the present invention provides a mechanism for inserting a recording medium, wherein a part of the mechanism has a rotation fulcrum that can intersect with the insertion slot in a direction in which the recording medium is inserted. A rotating shutter is provided. Further, an elevating means for loading the recording medium through the insertion opening and performing an elevating operation is provided, and the rotating shutter is operated in conjunction with the elevating operation of the elevating means, so that the elevating means moves the loading position of the recording medium. And when it is at a position different from the above, it is movable so as to intersect with the insertion slot.

[0014] Further, there is provided an insertion detecting switch provided on each of the left and right sides in the inserting direction of the recording medium, and operated in response to the insertion of the recording medium. The insertion direction of the recording medium with respect to is determined. Further, it is characterized by comprising a moving unit that moves with the insertion of the recording medium, a regulating unit that regulates the movement of the moving unit, and a regulation control unit that regulates or releases the regulation by the regulating unit. It is assumed that.

[0015] An insertion detection switch is provided on each of the left and right sides in the direction of insertion of the recording medium, and is operated in response to the insertion of the recording medium. The insertion direction of the recording medium into the insertion slot is determined based on the operation state of each insertion detection switch.

Further, the moving means is a leaf spring for operating the insertion detection switch by being bent in contact with the recording medium, and the restricting means has a spring force and the leaf spring is actuated by the spring force. A stopper block for contacting the recording medium with the recording medium through the insertion opening and performing an ascending / descending operation. When the lifting / lowering unit is at the loading position of the recording medium, the stopper block is pressed against the spring force, and the stopper block is pressed against the spring force to regulate the bending of the leaf spring by the stopper block. Is released, and when the lifting / lowering means is at a position different from the loading position, the pressing with the stopper block is released to release the spring force and the stopper is released. Is characterized in that a pressing slide pins to restrict the bending of the leaf spring by the lock.

[0017]

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

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
This is an example in which the present invention is applied to an insertion mechanism of a changer deck for accommodating and playing a plurality of cartridge storage type recording media such as D. The double loading prevention shutter section (D) includes a double loading prevention shutter 1, a guide pressing pin 2, a rotation pin 3, a spring fixed A pin 4, a spring 5, a spring fixed 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 substantially in the center, a long hole for the guide pin 2 is provided on the diagonal line on the upper right side, and a spring fixing A pin 4 is mounted and fixed on the 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. Thereby, the MD insertion opening 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 rotating pin 3 is the changer deck body 100
The double-load preventing shutter 1 is attached to and fixed to the front plate 101, and the double-load preventing shutter 1 is held with a gap by an E-ring 7, and functions as a rotation axis of the double-load preventing shutter 1.

The spring fixing A pin 4 is attached and fixed to the double loading prevention shutter 1, and the spring 5 is hooked and fixed. The spring 5 is hooked and fixed to a spring fixing A pin 4 and a spring fixing B pin 6, and the lifting mechanism 2
The double loading prevention shutter 1 that rotates in conjunction with the vertical movement of 00 is pulled back in the direction opposite to the rotation direction.

The spring fixing B pin 6 is attached and fixed to the front plate 101 of the changer deck main body 100, and hooks and fixes the spring 5. FIG. 1 and FIG.
The double loading prevention shutter 1 is rotated to the left when the guide pressing pin 2 is moved upward in conjunction with the lifting mechanism 200, and the double loading prevention shutter 1 is rotated to the left. The diagonal line at the top is lowered, MD
Is opened, and the MD 300 can be inserted. Further, in the loading prevention state, when the double loading prevention shutter 1 moves in conjunction with the elevating mechanism 200 and the guide pressing pin 2 moves downward, the double loading prevention shutter 1 is rotated to move the double loading prevention shutter 1 on the diagonal line at the upper left end. Is moved upward, and the double-load prevention shutter 1 shown in the external view of FIG. 1 is in the two-point oblique line state 1M, the MD insertion hole 101A is closed by the double-load prevention shutter 1, and the MD 300 is closed. Double loading is prevented.

Since the double-load preventing shutter 1 employs a lever-rotating shutter mechanism, 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.
Within 00, it is configured.

The erroneous insertion prevention guide plates 10 and 20 are provided on both right and left sides of the lifting mechanism 200, respectively, and guide the contact when the MD 300 is inserted. When the MD 300 is inserted in a proper state, the left and right guide plates 10 and 20 are provided. , 20 are MD
The switch 1 is abutted against the left and right side edges of the switch 300 and is pushed outwardly, and is installed on each of the left and right sides.
It is detected by the pressing operation of 3,3. This guide plate 1
Reference numerals 0 and 20 each have a tapered surface with which the MD 300 is in contact, and are pressed and abutted outward when the MD 300 is inserted. Also, MD3
Projections 10a, 20 for detecting the normal insertion direction of 00
a is provided opposite to the normal insertion direction of the MD 300. The projections 10a and 20a are as shown in FIG.
With respect to the thickness t1 of the guide plates 10, 20, t2 <t1 / 2
Groove 300a, 30 corresponding to MD300.
0b (provided only on one surface in the insertion direction at a position of T2 <T1 / 2 with respect to the thickness T1). The guide plate 10 shows the left side, and the guide plate 2
0 indicates the right side.

The hook pins 11 and 21 are attached and fixed to the guide plates 10 and 20, respectively, hook and fix the spring 14, and pull the guide plates 10 and 20 inward. The hook pin 11 indicates the left side, and the hook pin 21 indicates the right side. Guide rail 12,
Reference numeral 22 denotes a rail for guiding the guide plates 10 and 20 to move in the left-right direction. The cross-sectional shape is rectangular, and a trapezoidal groove is provided on the upper surface side. Also, long holes for guiding the movement of the hook pins 11 and 21 are provided.
Further, erroneous insertion prevention switches 13 and 23 are attached and fixed respectively.

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.
Are respectively moved outward, and the erroneous insertion prevention switches 13 and 23 are pressed. M by this pressing operation
D300 insertion detection signal and the loading detection switch 3
1 are all turned on, the detection signal is transmitted to the transport drive mechanism 220 shown in FIG. 2, the transport drive mechanism 220 operates, and the MD 300 is loaded.

The spring 14 has hook pins 11, 21.
Guide plate 1 which is hooked and fixed
0, 20 are always pulled inward each time, MD300
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 attached and fixed inside the bottom plate substantially at the center of the elevating mechanism 200, forms a spring material, and is bent by the insertion pressure of the MD 300,
The loading detection switch 31 is pressed, and the insertion of the MD 300 is detected.

The loading detection switch 31 is attached and fixed to a switch holder 32. When the MD 300 is inserted, the loading detection switch 31 is pressed via the loading detection leaf spring 30, and the MD 30 is pressed.
0 insertion is detected. The switch holder 32 is attached and fixed to the inside of the bottom plate substantially at the center of the lifting mechanism 200, and the loading detection switch 31 is attached and fixed.

As shown in the external view of FIG. 1 and FIG. 1B, a detailed view of the misinsertion prevention guides (A, B) and the loading detector (C), and the MD 300 has a horizontal width A and a vertical width B as shown in FIG. No,
The width A is larger than the height B (A> B), and the groove 300
Reference numerals a and 300b are provided at one position on the front surface in the normal insertion direction shown in FIG. 2B, at a position of 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 guide plate 1 is inserted.
After the protrusions 10a and 20a provided on the first and second grooves 0 and 20 are fitted into the grooves 300a and 300b, respectively,
The MD 300 abuts and presses the tapered surfaces 0 and 20 to move the guide plates 10 and 20 in the left and right outer directions, respectively.
3 is pressed to detect the normal insertion of the MD 300.

When all of the signals detected by the switches 13 and 23 and the signal detected by the loading detection switch 31 are turned ON, this signal is transmitted to the transport drive mechanism 220 shown in FIG. , MD300 are transported in the insertion direction. When the MD 300 is inserted in a state where the MD 300 is inserted upside down, and when the MD 300 is inserted upside down, the protrusion 10 is formed.
a, 20a and grooves 300a, 300b do not fit,
Blocked by the guide plates 10 and 20, insertion of the MD 300 is prevented. Also, the MD 300 is inserted in the direction shown in FIG.
When the MD is inserted with the width (A) different from that of the MD at right angles to the insertion slot, the switches 13 and 23 and the signal detected by the switch 31 are not all turned on, and the switches 13 and 23 are not turned on. Either one is OFF or both are OFF and erroneous insertion is detected. This erroneous insertion detection signal is transmitted to the transport drive mechanism 220 shown in FIG.
The MD 300 is carried out in a 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 storing and playing a plurality of cartridge-containing recording media such as MDs. Is different from the first embodiment. In this second embodiment, the double loading prevention shutter section is
Instead of being provided on the front face of the insertion slot, the function is improved by providing the wrong direction prevention guide section.

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 by slide holders 43 and 53 attached and fixed to both left and right sides of the changer deck body 100, and are pushed inward by springs 45 and 55, respectively. The stopper blocks 42, 52
The side surface opposite to the shaft portion held and held by the slide holders 43 and 53 is formed into a tapered shape, and is contacted and pressed by pressing slide pins 44 and 54 attached and fixed to the bottom surface of the elevating mechanism 200, respectively. Moved outward. The stopper blocks 42 and 52 are provided with L-shaped protrusions. When the MD 300 is inserted in a state where the elevating mechanism 200 is not in the normal insertion state and the MD 300 is inserted, the springs 45 and 55 are pressed and bent. However, the distal ends of the springs 45 and 55 are respectively provided on the stopper blocks 42 and 52 with L-shaped protrusions 42a and 42a, respectively.
At 52a, the bending of the springs 45, 55 is blocked, 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 part, fit the stopper blocks 42 and 52 respectively, and hold the spring 45. , 55, respectively. The pressing slide pins 44 and 54 are attached and fixed to the bottom surface 202 of the elevating mechanism 200, and the stopper block 4
The stopper blocks 42 and 52 are moved outward in both left and right directions when the lifting mechanism 200 moves upward in conjunction with the lifting mechanism 200 by abutting and pressing the tapered surfaces 2 and 52.

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.
Is moved upward, the stopper blocks 42 and 52 of the double loading prevention guide section are pushed by the pressing slide pins 44 and 5.
4 and is pressed (regulated) by the spring 4.
It moves to the outside of the left and right sides against the spring force of 5, 55, and is in a state of being expanded. In this state, the MD3
When 00 is inserted, the leaf springs 40 and 50 are pressed against each other and bent outward, but are free in the left and right direction without hitting the stopper blocks 42 and 52, so that insertion is 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,
Stopper blocks 42, 52 of double loading prevention guide section
Is not restricted by the pressing slide pins 44 and 54,
By the spring force of the springs 45 and 55, the springs 45 and 55 move inward on both left and right sides. When the MD 300 is inserted in this state, the leaf springs 40 and 50 are pressed against each other and are bent outward. However, since the leaf springs 40 and 50 hit the L-shaped projections 42 a and 52 a provided on the stopper blocks 42 and 52, they are directed outward. Movement is restricted and no further movement is possible.
00, and the double loading of the MD 300 is prevented. Thereby, more compact and reliable prevention of double loading 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. The mis-insertion preventing guide leaf springs 40 and 50 are provided on both right and left side surfaces of the changer deck body 100, respectively, are pressed when the MD 300 is inserted, and are left and right when the MD 300 is inserted in a proper state. Are pressed against the left and right side edges of the MD 300 and bent outward, and are detected by the switches 41 and 51 provided on the left and right sides, respectively. The guide leaf springs 40 and 50 are formed such that the surface that the MD 300 contacts is a tapered surface.
It is abutted and pressed by the insertion of D300 and is bent outward. Further, the tapered surface is provided with projections 40a and 50a for detecting the normal insertion direction of the MD 300 in opposition to the normal insertion direction of the MD 300. This projection 40
a and 50a are guide leaf springs 4 as shown in FIG.
With respect to the width t1 of 0,50, it is provided at the position of t2 <t1 / 2, and the direction of the front and back with the grooves 300a, 300b corresponding to the MD 300 (provided at the position of T2 <T1 / 2 with respect to the thickness T1). Classification is performed. The guide leaf spring 40 indicates the left side, and the guide leaf spring 50 indicates the right side.

The erroneous insertion prevention switches 41 and 51 are respectively attached and fixed to the left and right side surfaces of the changer deck body 100, and the left and right guide leaf springs 40 and 5 are inserted when the MD 300 is inserted.
0 are pressed against the left and right side edges of the MD 300 and bent outward, respectively.
51 is pressed. MD300 by this pressing operation
, And the signal detected by the loading detection switch 31 are all turned ON, the detection signal is transmitted to the transport drive mechanism 220, and the transport drive mechanism 220 shown in FIG. It is transported and loaded.

The loading detection leaf spring 30 is attached and fixed inside the bottom plate substantially at the center of the lifting / lowering mechanism 200, forms a spring material, is bent by insertion and pressing of the MD 300, and presses the loading detection switch 31. The insertion of the MD 300 is detected. The load detection switch 31 is a switch holder 32.
When the MD 300 is inserted, the MD 300 is pressed 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 elevating mechanism 200, and the loading detection switch 31 is attached and fixed. The lifting mechanism 200
The stopper blocks 42 and 52 and the guide leaf spring 4
A notch hole 203 for passing 0, 50, etc. through the elevating mechanism 200 is provided. 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 position on the front face in the normal insertion direction shown in FIG. 3A, at a position of 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 are MD300. After being fitted in the grooves 300a, 300b, the tapered surfaces of the 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. Press the mis-insertion prevention switches 41 and 51 installed on both the left and right sides, and press MD3.
00 normal insertion is detected.

When all of the signals detected by the switches 41 and 51 and the signal detected by the loading detection switch 31 are turned ON, this signal is transmitted to the transport drive mechanism 220 shown in FIG. , MD300 are transported in the insertion direction. When the MD 300 is inserted in a state where the MD 300 is inserted upside down, and when the MD 300 is inserted upside down, the protrusion 40 is formed.
a, 50a and the grooves 300a, 300b do not fit,
It is blocked by the guide leaf springs 40 and 50 to prevent the MD 300 from being inserted. Also, if the MD 300 is inserted in the direction shown in FIG.
In the case where the MD is inserted with the width (A) of the MD different from that of (a) perpendicular to the insertion slot, the switches 41 and 51 and the signal detected by the switch 31 are not all turned on, and the switch 41 is not turned on. , 51, or either of them is turned off, and erroneous insertion is detected. This erroneous insertion detection signal is transmitted to the transport drive mechanism 220, and the MD3
00 is carried out in the direction opposite to the insertion direction.

[0041]

As described above, according to the present invention, in the double loading prevention mechanism, a rotary shutter is provided at the insertion port to reduce the dead space and to provide a more reliable double loading. In the erroneous direction insertion prevention mechanism, insertion detection switches are provided on both left and right sides, and erroneous insertion can be more reliably prevented by detection of the insertion detection switches. In addition, an erroneous insertion prevention mechanism using a stopper block, a pressing slide pin, and the like is adopted, and a double loading prevention function is provided in the erroneous direction insertion prevention mechanism, thereby eliminating the need for a lever-rotating shutter or the like. The effect of more reliably preventing double loading and incorrect insertion at the same time is obtained.

[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 ... Incorrect insertion Prevention guide plate A 11: Hook pin 12: Guide rail 13: Mis-insertion prevention switch 14: Spring 20: Mis-insertion prevention guide plate A 21: Hook pin 22: Guide Rail 23: Switch for preventing misinsertion 30: Leaf spring for loading detection 31 ... Switch for detecting loading 32: Switch holder 40: Guide leaf spring A 41 for preventing misinsertion 41: Preventing misinsertion Switch A 42 Stopper block A 43 Slide holder A 44 Press slide pin 45 Spring 50 Guide spring B 51 ... Switch B for preventing incorrect insertion 52 ... Stopper block B 53 ... Slide holder B

Claims (6)

[Claims] 1. A recording medium insertion mechanism in which a rectangular recording medium is inserted into an insertion slot, wherein a part of the mechanism has a rotation fulcrum that can intersect the insertion slot in the recording medium insertion direction. A recording medium insertion mechanism comprising a moving shutter. 2. A lifting means for loading the recording medium through the insertion opening and performing an elevating operation, wherein the rotating shutter is linked to the elevating operation of the elevating means, and the elevating means moves the recording medium. 2. The recording medium insertion mechanism according to claim 1, wherein the recording medium insertion mechanism is movable so as to intersect with the insertion slot when the recording medium is at a position different from the loading position. 3. A recording medium insertion mechanism in which a rectangular plate-shaped recording medium is inserted into an insertion slot, wherein the recording medium is provided on the left and right sides in the insertion direction of the recording medium.
An insertion detection switch that operates in response to insertion of the recording medium is provided, and based on an operation state of each of the insertion detection switches,
A recording medium insertion mechanism for determining a direction in which the recording medium is inserted into the insertion slot. 4. A recording medium insertion mechanism in which a rectangular plate-shaped recording medium is inserted into an insertion slot, wherein the moving means moves with the insertion of the recording medium, and the regulating means regulates the movement of the moving means. And a regulation control means for regulating or canceling the regulation by the regulating means. 5. An insertion detection switch, which is provided on each of the left and right sides in the insertion direction of the recording medium and operates in response to the insertion of the recording medium, wherein the movement of the moving means activates the insertion detection switch, 5. The recording medium insertion mechanism according to claim 4, wherein an insertion direction of the recording medium into the insertion slot is determined based on an operation state of each insertion detection switch. 6. The leaf spring for actuating the insertion detection switch by bending when coming into contact with the recording medium, wherein the regulating means has a spring force and the leaf spring is actuated by the spring force. A stopper block for restricting the bending of the leaf spring by contacting the recording medium with the recording medium via the insertion opening and performing a lifting operation. When the lifting / lowering unit is at the loading position of the recording medium, the stopper block is pressed against the spring force, and the stopper block is pressed against the spring force to regulate the bending of the leaf spring by the stopper block. And when the lifting / lowering means is at a position different from the loading position, the pressing with the stopper block is released to release the spring force and the stopper block is released. Insertion mechanism of the recording medium according to claim 5, characterized in that the push slide pin to regulate the bending of the leaf spring by click.