JP2000003545A - Recording medium moving mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably and reliably carry a recording medium case to a specified position inside a device and take out the same from the specified position. SOLUTION: The recording medium case is placed on a tray 20, and the case is moved into a device. An arm 30 and a lever 40 are attached to the tray 20, and by the back and forth movement of the lever 40, the arm 30 is rotated. The lever 40 is operated according to the movement of the tray 20, and holding/non-holding is controlled by the arm 30. The arm 30 serves not only as such a case holding means but also as a case erroneous loading preventing means by being provided with a specified shape regulation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a recording medium moving mechanism used for moving a recording medium case into a device such as a performance device.

[0002]

2. Description of the Related Art At present, as a means for inserting a recording medium case (hereinafter referred to as a case) into a predetermined position in an apparatus,
The mainstream uses a mechanism for directly inserting the case into the inside of the apparatus, but there is also a mechanism using a mechanism for conveying and inserting the inside of the apparatus using a transfer tray. In the case of such a mechanism, the transfer tray is used. The tray body has a function of holding the case by the body and preventing erroneous devices in the case. When the case is conveyed to the inside of the apparatus by the tray and then re-conveyed to the playing position inside the apparatus, the case is conveyed in conjunction with the tray or conveyed by the same drive mechanism as the tray. .

[0003]

However, in the above-mentioned prior art, in a device which uses a carrying tray for carrying a case and sets a storage position and a playing position of the case inside the device, the playing position is changed from the storage position to the playing position. Reciprocating movement to the vehicle cannot be performed easily. In addition, the detection of erroneous mounting of the tray is performed after the tray is transported to the inside of the apparatus. In a configuration having the same drive mechanism as the tray described above, a part of the drive mechanism may come into contact with the performance device, which may reduce the anti-vibration effect of the performance device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is a recording medium in which a recording medium case can be stably and reliably transported to a predetermined position inside the apparatus and taken out from the predetermined position. It is an object to provide a moving mechanism.

[0005]

According to a first aspect of the present invention, a recording medium case to be mounted is held by reciprocatingly moving between a detachable position where a recording medium case can be attached and detached and a predetermined internal position of the apparatus. In a recording medium moving mechanism having a tray provided with a case holding means, the holding / non-holding switching operation of the case for the recording medium of the case holding means is performed according to the reciprocating operation of the tray. A feature is that the recording medium case can be stably held even during movement.

According to a second aspect of the present invention, in the first aspect of the present invention, the case holding means functions as a recording medium erroneous mounting preventing means for preventing erroneous mounting of the recording medium case. This makes it possible to detect erroneous mounting of the case outside the apparatus, which is the case attachment / detachment position, and to reduce the cost by rationalizing the members.

According to a third aspect of the present invention, in the second aspect of the present invention, the recording medium case has a thin and substantially rectangular parallelepiped shape, and has at least two types of four corners on an end face thereof, and A recording medium case provided with a concave portion near the corner is used, and the case holding means is adapted to any of the corners in order to realize a function as the recording medium erroneous mounting prevention means. A specific configuration of a use case and a case holding means for providing a case holding means functioning as a means for preventing erroneous mounting of a case, characterized by comprising a wall portion having a shape and a convex portion engaging with the concave portion. Is given.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, in order to perform a holding / non-holding switching operation of the case holding means, the case holding means is attached to a rear surface of the tray by a snap hit, Switching means biased by an urging member, wherein the snap hit and the urging member are arranged so as to be located inside the apparatus regardless of the position of the tray; In this case, it is possible to prevent the snap hit portion and the urging means from coming into contact with the user's hand and being disengaged even in the case of the case.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, at the inside position of the apparatus, a pull-in movement for pulling a recording medium case further from the tray in the non-holding position to the inside of the apparatus. Alternatively, a case moving means for performing a return movement for returning the recording medium case to the tray is provided, so that it is possible to adopt a configuration for improving the image stabilizing characteristics of the apparatus.

According to a sixth aspect of the present invention, in the invention of the fifth aspect, the switching operation of holding / non-holding of the case holding means with respect to the recording medium case is performed in accordance with the pull-in movement and the return movement of the case moving means. This is characterized in that case movement can be performed rationally and reliably.

According to a seventh aspect of the present invention, in the fifth or sixth aspect of the present invention, the position of the recording medium case when the return movement is performed at the contact portion of the case holding means with the recording medium case. It is characterized in that a taper portion for correcting displacement is provided, and the operation of returning the case to the tray can be stably performed.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the recording medium moving apparatus according to the present invention will be specifically described below with reference to the accompanying drawings. In all the drawings for describing the embodiments,
The same elements are denoted by the same reference numerals, and the description thereof will not be repeated. FIG. 1 is a schematic configuration diagram for explaining an embodiment of a recording medium moving mechanism according to the present invention. In the drawing, reference numeral 10 denotes a recording medium case (hereinafter, referred to as a case), and 11a and 11b.
Is a case corner on the front side in the insertion direction, 12a and 12b are case corners on the rear side in the insertion direction, 13 and 14 are concave portions, 20 is a tray, 30 is an arm, 40 is a lever, and 80 is an apparatus housing. The case 10 has a thin, substantially rectangular parallelepiped shape and a shape different in width and depth. The case corners 11a and 11b on the front side in the insertion direction are curved surfaces, and the case corners 12a and 12b on the rear side in the insertion direction. Are substantially non-curved, and furthermore, the case corners 11a, 11b on the front side in the insertion direction.
Recesses 13 and 14 are provided on the back surface side near.

FIG. 1 shows a state in which the tray 20, an arm 30 provided with a case position holding means and an erroneous mounting preventing means, and a lever 40 for rotating the arm 30 are located at a detachable position where the case 10 can be detached. It shows. In this device, the case 10 moves and stops at three positions: an attachment / detachment position outside the device housing 80, a storage position inside the device housing 80, and a playing position located at the rear of the storage position. Is set. Case 10 is tray 2
By the operation 0, the sheet is conveyed from the attachment / detachment position to the storage position, and further moved from the storage position to the playing position by the operation of a case retracting mechanism (not shown) inside the playing device (not shown).

FIG. 2 is a schematic diagram of a main part for further explaining the structure of the recording apparatus moving mechanism shown in FIG.
1 is a right side wall portion of the mounting portion, 22 is a left side wall portion of the mounting portion, 23 is a front side wall portion of the mounting portion, 24 is a cylindrical protrusion of the mounting portion, 25 is an arc-shaped groove, 26 is an incision portion, and 27a and 27b are L-shaped guide projection,
28 is a spring hook rib, 29 is a snap hit, 31 is an engagement hole, 32 is an arm upper cylindrical protrusion, 33 is an arm lower cylindrical protrusion, 34 is a case contact wall, 35 is a curved wall, 3
6 is a tapered wall portion, 37 is a convex portion, 41a and 41b are guide grooves, 42 is a cam groove, 43 is a spring hook hole, 44 is a bent portion, 50 is a tension spring for urging the lever 40, and o is a guide groove. 41a and 41b are open openings, and g is a guide groove 4.
These are guide portions 1a and 41b.

The tray 20 is provided with a mounting portion on which the case 10 can be mounted. The mounting portion is configured by a mounting portion right side wall portion 21 on the right side when viewed from the front of the device, a mounting portion left side wall portion 22 on the left side when viewed from the front of the device, and a device portion front side wall portion 23. The distance between the mounting portion right side wall portion 21 and the mounting portion left side wall portion 22 is set to substantially the same length as the width of the case 10.

The tray 20 has a mounting portion cylindrical projection 24 on the lower surface on the right side thereof, an arc-shaped groove 25 having an arc shape centered on the mounting portion cylindrical projection 24, and a right side of the mounted case 10 in the apparatus interior direction. Of the incision 26 at the position where it engages with the case corner 11a, the L-shaped guide protrusions 27a and 27b at the front and rear of the incision 26, the spring hooking rib 28 at the rear of the cutout 26, and the spring hooking rib 28. A rear inverted L-shaped snap hit 29 is provided.

The arm 30 is located on the lower surface of the tray 20 and has an engaging hole 31 which engages with the mounting portion cylindrical protrusion 24 of the tray 20 and an arm upper cylindrical protrusion which engages and slides with the arc-shaped groove 25 of the tray 20. 32, an arm lower cylindrical protrusion 33 coaxial with the arm upper cylindrical protrusion 32, a case contact wall portion 34 located above the cutout portion 26 of the tray 20 and contacting the case 10,
A tapered wall portion 36 connected to the case contact wall portion 34, a right corner 1 inside the device of the case 10 connected to the case contact wall portion 34 and connected to the case contact wall portion 34.
A curved wall portion 35 having a curved surface similar to the curved surface 1a and a convex portion 37 that engages with the right concave portion 13 of the case 10 are provided. The case contact wall portion 34, the tapered wall portion 36, the curved wall portion 35, and the convex portion 37 are formed in the cutout portion 26 of the tray 20.
Located above.

The lever 40 is provided below the arm 30 and has two guide grooves 41a and 41b for engaging with the L-shaped guide protrusions 27a and 27b of the tray 20 and slidingly holding the lever 40. Can be Further, the lever 40 has a cam groove 42 for guiding and sliding the arm lower cylindrical projection 33, a spring hook hole 43, and a bent portion 44 at the rear end. The tension spring 50 is hung between the spring hook rib 28 of the tray 20 and the spring hook hole 43 of the lever 40 to urge the lever 40 toward the rear of the apparatus.

An engagement state of the tray 20, the arm 30, the lever 40, and the tension spring 50 having the respective components as described above will be described. The arm 30 is disposed on the lower surface of the tray 20 so as to be rotatable along an arc-shaped groove 25 around the mounting portion cylindrical projection 24 as a rotation center, and is held between the tray 20 and the lever 40.

The lever 40 is slidably held by the L-shaped guide projections 27a and 27b of the tray 20 with the arm 30 sandwiched therebetween. At this time, the arm lower cylindrical projection 33
Is engaged with the cam groove 42 of the lever 40 and guided.
With such a configuration, the arm 30 rotates with the sliding operation of the lever 40 in the front-rear direction of the device. Further, the lever 40 is incorporated into the tray 20 by inserting the L-shaped guide projections 27a, 27b of the tray 20 into the respective installation openings o of the guide grooves 41a, 41b of the lever 40. At this time, the inverted L-shaped snap hit 29 of the tray 20
Is spread inward toward the apparatus, and the bent portion 44 at the rear end of the lever 40 is inserted for installation. After the insertion, the lever 40 is slid toward the rear of the apparatus, so that the L-shaped guide projections 27a and 27b of the tray 20 are
Of the guide grooves 41a and 41b from the position of the built-in opening o to the position of the guide portion g.
0, and the inverted L-shaped snap hit 29 of the tray 20 is located toward the front of the apparatus from the bent portion 44 at the rear end of the lever 40, and the lever 40 moves backward to the built-in insertion opening o. It works to prevent you from doing so.

The lever 40 is always urged toward the rear of the apparatus by a tension spring 50 hung between the tray 20 and the lever 40, and the guide grooves 41a, 41 of the lever 40 are provided.
b is the L-shaped guide projection 27a, 2 of the tray 20.
7b respectively contact the front end surfaces. The snap hits 29 and the tension springs 50 of the tray 20 are arranged at the rear of the tray 20 and stay inside the apparatus even when the tray 20 is moved to the case attaching / detaching position.

The operation of the arm 30 and the lever 40 will be described with reference to FIGS. FIG. 3 is a schematic configuration diagram of a main part showing a state where the tray 20 is located at the attachment / detachment position. FIG. 3A is a plan view and FIG. 3A is a schematic side perspective view of FIG.
This is shown in FIG. In FIG. 3, reference numeral 60 denotes a holder, 61 denotes an inclined surface, 62 denotes an apex projection, 70 denotes a recording medium playing device (hereinafter referred to as a playing device), 71 denotes a case holder, 72 denotes a pull-in lever, and 73 denotes a pushing end surface. . In the state shown in FIG.
Are slidably held by the L-shaped guide projections 27a and 27b at
It is urged by a tension spring 50 toward the rear of the apparatus.
With this urging force, the front end surfaces of the guide grooves 41a and 41b abut the front end surfaces of the L-shaped guide protrusions 27a and 27b of the tray 20, respectively.

The arm 30 is rotated and held inward of the apparatus by the action of the cam groove 42 of the lever 40. At this time, the case contact wall 34 of the arm 30 and the curved wall 3
5, and the convex portion 37 are located above the cutout portion 26 of the tray 20, and these are the placing portion right side wall portion 21, the placing portion left side wall portion 22, and the placing portion front side wall portion 23 of the tray 20. It also functions to hold the case 10 placed thereon.

Further, at the playing position of the case 10, a playing device 70 and a case pulling-in drive means for the playing device 70 (description of the element operation of the playing device and the case pulling-in driving device) are omitted. It is placed and held on the holder 60 via a not shown). The holder 60 has the slope 6
1 and a vertex protrusion 62, and is located behind the lever 40. The above-described case retraction mechanism includes a case holder 7 that holds and holds the case 10 inside the performance device 70.
1, a retraction lever 72 that is inserted into the concave portion 14 on the left side of the case 10 and retracts the case 10 into the case holder 71, and a case that is located behind the case 10 placed on the tray 20 and that is interlocked with the retraction lever 72. It has an extruded end face 73.

FIG. 4 is a schematic diagram of the main part showing the state in which the tray has been moved to the storage position. FIG.
FIG. 4B is a schematic side perspective view of FIG. When the tray 20 moves to the storage position, the bent portion 44 at the rear end of the lever 40 held by the tray 20 is pressed by the slope vertex protrusion 62 of the holder 60, and the lever 40 moves toward the front of the apparatus. I do. By the movement of the lever 40, the arm 30 is rotated rightward along the cam groove 42 of the lever 40 to the right side of the device, and the case contact wall portion 34, the curved wall portion 35, and the convex portion 3 of the arm 30 are provided.
7 rotates to the right side of the device, and the holding of the case 10 by the arm 30 is released. At this time, the holding of the case 10 on the rear side of the apparatus is performed by the case pushing end face 73 in the playing device 70 located at the rear of the tray. In the state shown in FIG. 4, the case pulling operation from the tray 20 to the playing device 70 or the case returning movement operation from the playing device 70 to the tray 20 is performed.

The operation of pulling the case into the performance device 70 is as follows.
By operating the case retraction driving means in the performance device 70, the retraction lever 72 is inserted into the concave portion 14 on the left side of the case 10, and the case 10 is retracted into the case holder 71 inside the performance device 70. Conversely, in the case return movement operation to the tray 20, the operation reverse to the above-described case pull-in operation is performed by the action of the pull-in lever 72 and the case pushing end face 73, and the case 10
To the tray 20.

FIG. 5 shows a state where the tray is in the storage position.
FIG. 5A is a plan view of a main part schematic configuration diagram showing a state where the holder 60 is vertically lowered toward the apparatus bottom by another driving means (not shown), and a schematic side perspective view of FIG. 5
This is shown in FIG. In this state, the apex protrusion 62 of the holder 60 that has pressed the bent portion 44 at the rear end of the lever 40 moves toward the bottom of the apparatus, and the pressing on the lever 40 is released. The lever 40 and the arm 30 are urged only by the tension spring 50, and have the same arrangement as the attachment / detachment position shown in FIG. 3, and the case 10 is held on the tray 20.
As a result, the case can be more reliably held inside the apparatus. At this time, if the return movement of the tray 10 to the case 10 from the playing device 70 to the predetermined holding position is incomplete, the taper wall portion 36 at the tip of the arm 30 is turned by the rotation of the arm 30 toward the inside of the device. By bringing the case 10 into contact with the right corner 11a inside the apparatus 10 and moving the case 10 to the predetermined holding position of the tray 20, the return movement operation of the case 10 from the playing device 70 to the tray 20 is surely completed.

When the holder 60 moves vertically upward to the rear of the tray 20, the lever 40 moves toward the front of the apparatus by the action of the slope 61 of the holder 60.
The state shown in FIG. At this time, before the case contact wall portion 34 is separated from the right corner 11a of the case 10 inside the device by the pivoting operation of the arm 30 accompanying the movement of the lever 40, the case pushing end face 73 of the playing device 70 is It rises vertically to the rear of the tray, and holds the case 10 at the rear of the apparatus.

In the present embodiment, the holder 60 has been described as having a configuration in which the holder 60 moves between the rear of the tray 20 and the direction of the bottom of the apparatus. The same operation can be performed even if the holder 60 is configured to move between the rear portion of the tray 20 and the top of the apparatus because the holder 60 is provided symmetrically in two places in the vertical direction.

Although the present embodiment describes a configuration using one tray, a similar operation can be performed in a configuration in which a plurality of trays are stacked in the nadir direction of the apparatus. In such a configuration, the holder 60 vertically moves to the rear of the tray on which the case to be played is placed out of the plurality of trays, and draws the case into the playing device to perform the performance. At this time, the cases placed on the other trays are still held on each tray.

Next, a case erroneous mounting prevention mechanism will be described with reference to FIGS. FIG. 6 is a diagram showing a normal mounting state of the case. FIG. 6A is a plan view, and FIG. 6B is a cross-sectional view taken along line AA of FIG. 6A. Case 1
0 indicates that the end face on the original insertion direction side faces the rear direction of the apparatus,
With the concave portions 13 and 14 facing the bottom of the apparatus, the left and right end surfaces are sandwiched between the mounting portion right side wall portion 21 and the mounting portion left side wall portion 22 of the tray 20, and the front and rear end surfaces are mounted on the tray 20. It is sandwiched and held between the placing portion front side wall portion 23 and the case contact wall portion 34 of the arm 30.

FIG. 7 shows that the case 10 is
FIG. 7A is a view showing a state in which the camera is incorrectly mounted by being rotated counterclockwise by 0 degrees, and FIG. 7A is a plan view and FIG. 7B is a cross-sectional view taken along the line AA of FIG. . In this case, the tray 20
Since the width of the case 10 is larger than the distance between the mounting portion front side wall portion 23 and the case contact portion wall portion 34 of the arm 30,
The case 10 cannot be placed on the placement portion of the tray 20, and the case 10 protrudes toward the top of the apparatus. In this state, when the tray 20 is moved from the attachment / detachment position to the storage position inside the apparatus, the tray is placed above the tray insertion opening of the apparatus 80 (if the apparatus has a plurality of trays, the tray bottom located at the top). The case 10 protruding from the position 20 hits, and the movement of the tray 20 inside the apparatus cannot be completed. If the operation cannot be completed within a certain period of time, the operation determining mechanism (illustration and description is omitted) determines that there is an abnormality, moves the tray 20 backward to the attaching / detaching position, and reconfirms the mounting state of the case 10 to the user. To

FIG. 8 shows the case 10 when the case 10 is
FIG. 8A is a plan view showing a state in which the camera is incorrectly mounted by being rotated counterclockwise by 80 degrees, and FIG. 8B is a cross-sectional view taken along line AA of FIG. 8A. . In this case, the arm 30
Of the case rear corner 12 which is a substantially non-curved surface
Since the position “b” is located, the case 10 cannot be mounted between the mounting portion front side wall portion 23 of the tray 20 and the curved wall portion 35 of the arm 30 and protrudes in the device top direction. Thereafter, the same operation as the operation described with reference to FIG.
The user is allowed to reconfirm the mounting state of 0.

FIG. 9 shows that the case 10 is
9 (A) is a plan view, and FIG. 9 (B) is a cross-sectional view taken along line AA of FIG. 9 (A). is there. In this case, tray 2
Because the width of the case 10 is wider than the distance between the mounting portion front side wall portion 23 and the case contact wall portion 34 of the arm 30, the case 10 cannot be mounted on the mounting portion of the tray 20, and the case 10 Protrudes in the heavens. Thereafter, the same operation as described with reference to FIG. 7 described above is performed, and the user is allowed to confirm the mounting state of the case 10 again.

FIG. 10 is a view showing a state in which the top surface and the bottom surface of the case 10 are reversed and incorrectly mounted.
10A is a sectional view taken along the line AA of FIG.
It is shown in FIG. In this case, the case 10
The case 10 rides on the convex portion 37 of 0, and the case 10 protrudes from the tray 20 toward the top of the apparatus. Thereafter, the same operation as that described with reference to FIG. 7 is performed, and the user is allowed to confirm the mounting state of the case 10 again.

[0036]

According to the first aspect of the present invention, the operation of switching the holding / non-holding operation of the case holding means for holding the case for the recording medium is performed according to the reciprocating operation of the tray, thereby moving the case for the recording medium. It is possible to stably hold the inside.

According to a second aspect of the present invention, in addition to the first aspect, a case holding means for holding a case for a recording medium is provided.
By functioning as a means for preventing erroneous mounting of the recording medium case, it becomes possible to detect erroneous mounting of the case outside the apparatus, which is the case attaching / detaching position, and it is possible to reduce costs by rationalizing members.

Effect of Claim 3 In addition to the effect of Claim 2, specific configurations of the use case and the case holding means for functioning the case holding means as a means for preventing erroneous mounting of the case are provided.

According to the fourth aspect of the present invention, in addition to the effects of any one of the first to third aspects, the urging member and the snap hit are arranged so as to be always located inside the apparatus, so that the tray can be attached to and detached from the case outside the apparatus. Even if it is located in the position,
It is possible to prevent the snap hit portion and the urging means from coming off by touching the user's hand.

According to a fifth aspect of the present invention, in addition to the effects of any one of the first to fourth aspects, a case movement means for retracting and returning the recording medium case inside the apparatus and providing a case moving means for returning the recording medium case is provided. Can be increased.

Effect of Claim 6 In addition to the effect of Claim 5, by performing the holding / non-holding switching operation of the holding means of the case according to the operation by the case moving means, the case movement is rational. And can be performed with high reliability.

Effect of Claim 7 In addition to the effect of Claim 5 or 6, in addition to the tapered portion for preventing the case from being displaced in the case contacting portion of the case holding means, the case can be moved with respect to the tray. The return operation can be performed stably.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating an embodiment of a recording medium moving mechanism of the present invention.

FIG. 2 is a main part schematic configuration diagram for further explaining the configuration of the recording apparatus moving mechanism shown in FIG. 1;

FIG. 3 is a schematic configuration diagram of a main part showing a state where a tray is located at a detachable position.

FIG. 4 is a schematic configuration diagram of a main part showing a state where a tray has moved to a storage position.

FIG. 5 is a schematic diagram of a main part showing a state where the holder is vertically lowered toward the apparatus bottom by another driving means when the tray is at the storage position.

FIG. 6 is a view showing a normal mounting state of the case.

FIG. 7 is a diagram illustrating a state in which the case is incorrectly mounted by rotating the case by 90 degrees counterclockwise from the normal mounting state.

FIG. 8 is a view showing a state in which the case is incorrectly mounted by rotating the case 180 degrees counterclockwise from the normal mounting state.

FIG. 9 is a view showing a state in which the case is incorrectly mounted by rotating the case 270 degrees counterclockwise from the normal mounting state.

FIG. 10 is a view showing a state in which the top surface and the bottom surface of the case are reversed and incorrectly mounted.

[Explanation of symbols]

10. Case for recording medium (case), 11a, 11b ...
Case corners on the front side in the insertion direction, 12a, 12b ... Case corners on the rear side in the insertion direction, 13, 14 ... recess, 20 ... tray,
21 ... Placement part right side wall part, 22 ... Placement part left side wall part, 23 ...
Mounting portion front side wall portion, 24: mounting portion cylindrical protrusion, 25: arc-shaped groove, 26: cutout portion, 27a, 27b: L-shaped guide protrusion,
28 ... Spring hook, 29 ... Snap hit, 30 ...
Arm, 31: engagement hole, 32: arm upper cylindrical projection, 3
3 ... Arm lower cylindrical projection, 34 ... Case contact wall, 35
... Curved wall part, 36 ... Taper wall part, 37 ... Convex part, 40 ... Lever, 41a, 41b ... Guide groove, 42 ... Cam groove, 43
... Spring hole, 44 ... Bent part, 50 ... Tension spring,
Reference numeral 60: holder, 61: slope portion, 62: apex projection portion, 70
... Recording medium playing device (playing device), 71 ... Case holder, 72 ... Retract lever, 73 ... Extruded end face, 80
... device housing, g ... guide portions of guide grooves 41a, 41b,
o: Opening of the guide grooves 41a and 41b.

Claims (7)

[Claims] 1. A tray provided with a case holding means for reciprocatingly moving between a detachable position where a recording medium case can be attached and detached and a predetermined internal position of the apparatus and holding a recording medium case to be mounted. In the recording medium moving mechanism, a switching operation of holding / non-holding of the case for the recording medium by the case holding means is performed according to a reciprocating operation of the tray. 2. The recording medium moving mechanism according to claim 1, wherein said case holding means functions as a recording medium erroneous mounting preventing means for preventing erroneous mounting of a recording medium case. 3. A recording medium as the recording medium case, which has a thin, substantially rectangular parallelepiped shape, has at least four different corners on its end face, and has a recess near the corner. The case holding means engages with the wall portion having a shape conforming to one of the corners and the recess in order to realize the function as the recording medium erroneous mounting prevention means. The recording medium moving mechanism according to claim 2, further comprising a projection. 4. A switching means attached to a back surface of the tray by a snap hit and biased by a biasing member to perform a holding / non-holding switching operation of the case holding means, 4. The recording medium moving mechanism according to claim 1, wherein the snap hit and the urging member are arranged inside the apparatus regardless of the position. 5. A case movement in which the recording medium case is further drawn into the apparatus from the tray in the non-holding position or the return movement for returning the recording medium case to the tray at the apparatus internal position. The recording medium moving mechanism according to any one of claims 1 to 4, further comprising means. 6. A switching operation of holding / non-holding of the case holding means with respect to the recording medium case is performed in accordance with the pull-in movement and the return movement of the case moving means. Recording medium moving mechanism. 7. A taper portion for correcting a displacement of the recording medium case when the return movement is performed, is provided at a contact portion of the case holding means with the recording medium case. 7. The recording medium moving mechanism according to claim 5, wherein: