JPH11162070A - Mechanism for preventing erroneous insertion of recording/reproducing medium and recording/ reproducing device provided with this mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the erroneous insertion of a recording/reproducing medium having a specified external shape to an opening part at a stage when the insertion to the opening part is started. SOLUTION: This mechanism is furnished with a detecting member 17 movable in the direction separating from a recordign/reproducing medium by bringing a pair of abutting pieces 21, 21 into contact with the recording/reproducing medium and having a pair of these abutting pieces 21, 21 separated at an interval which is shorter than the longitudinal side of the recording/reproducing medium 8 where the outside shape forms a nearly rectangular shape and longer than the shorter side, a restricting member 18 movable in accompany with the movement of the detecting member between a restricting position interrupting the insertion of the recording/reproducing medium to an opening part 13 by a restricting piece 25 and a retracting position allowing the insertion and having the restricting piece 25 positioned to the side of inserting direction than the abutting piece between a pair of the abutting pieces and a biasing member 19 for biasing the moving force to the restricting member to the restricting position from the retreating position. The constitution is made so that the insertion is made possible bringing a pair of the abutting pieces into contact with the recording/reproducing medium and moving the restricting member to the retracting position, only when the insertion of the recording/reproducing medium is started by making the longitudinal side of the recordign/reproducing medium correspond to the opening part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a mechanism for preventing erroneous insertion of a recording / reproducing medium and a recording / reproducing apparatus provided with the same. More specifically, the present invention relates to a technique for preventing erroneous insertion of a recording / reproducing medium having a fixed outer shape into an opening at a stage when insertion into the opening is started.

[0002]

2. Description of the Related Art For example, there is a recording / reproducing apparatus capable of recording and / or reproducing information signals on a recording / reproducing medium such as a mini disk (MD) or both. The MD is formed as a media cassette including a media case having a flat rectangular shape and a disk body (media) rotatably disposed therein.

[0003] The media case is formed with an opening through which a disc disposed inside is exposed to the outside during recording or reproduction, and the media case locks a shutter for opening and closing the opening at a closed position. For example, the outer shape is formed in a rectangular shape that is slightly longer in one direction, that is, a rectangular shape because a lock mechanism for performing locking is required to be disposed on one side edge.

[0004] Proper insertion of the MD into the opening (insertion opening) formed in the housing of the recording / reproducing apparatus described above is performed with the longitudinal direction of the media case corresponding to the opening. However, if the short direction is erroneously inserted in correspondence with the opening, the conventional recording / reproducing apparatus mounts the MD on the mounting means provided inside the recording / reproducing apparatus. Is prevented as follows.

(1) Although the MD is inserted to a certain extent from the opening, it is not completely inserted into the device due to a difference in the insertion direction, and the user grasps the MD and takes it out of the device.

(2) Although the MD is inserted to a certain extent from the opening, the MD cannot be inserted further by contacting a part of the internal mechanism during the insertion. And remove it from the device.

(3) The MD is completely inserted into the apparatus once, but an inappropriate direction of the inserted MD is mechanically or electrically detected inside the apparatus before being mounted on the mounting means. A discharge mechanism for discharging the MD is provided, and the MD is discharged from the opening by the discharge mechanism.

[0008]

However, in the above-mentioned conventional recording / reproducing apparatus, in any of the cases (1) to (3), the MD is inserted into the apparatus to some extent or completely. As a result, the inserted MD and the mechanisms provided inside the apparatus may come into contact with each other and damage the MD and the respective mechanisms.

Also, inside the device, a part of the MD,
For example, the shutter slidably supported by the media case is caught by a part of the mechanism, and the MD
There was also a problem that the waste was not properly discharged.

Further, in the case of the above (3), information is required for required parts and mechanisms, for example, mounting means for mounting a recording / reproducing medium, and recording / reproducing medium mounted on the mounting means. A recording / reproducing unit for recording and reproducing signals and a discharge mechanism must be provided near a transport mechanism for transporting the recording / reproducing medium between the opening and the mounting means. There is also a problem that it becomes complicated.

Therefore, the mechanism for preventing erroneous insertion of a recording / reproducing medium and the recording / reproducing apparatus provided with the same, according to the present invention, overcome the above-mentioned problems and prevent erroneous insertion of a recording / reproducing medium having a fixed outer shape into an opening. It is an object of the present invention to prevent the insertion at a stage when the insertion into a part is started.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a recording / reproducing medium with an erroneous insertion preventing mechanism. In addition, the recording / reproducing medium has a pair of abutting pieces separated from each other in a direction perpendicular to the insertion direction and the thickness direction with an interval larger than the length in the short direction, and a pair of abutting pieces with the recording / reproducing medium inserted into the opening. And a detecting member movably disposed so as to be separated from the recording / reproducing medium in the thickness direction by contact with the regulating member, between the pair of abutting pieces, and on the insertion direction side of the contact piece. And the restricting piece is movable with the movement of the detecting member between a restricting position for preventing insertion of the recording / reproducing medium into the opening and a retracting position for permitting insertion of the recording / reproducing medium into the opening. With the regulating member placed, A biasing member for biasing the moving force from the position to the regulation position, so that the start of insertion of the recording / reproducing medium into the opening is performed in a state where the short side of the recording / reproducing medium corresponds to the opening. When the recording / reproducing medium is in contact with only one contact piece or the recording / reproducing medium does not come into contact with the contact piece, the regulating member is not moved to the retracted position and inserted into the opening of the recording / reproducing medium. Is made impossible.

In order to solve the above-mentioned problem, another erroneous insertion preventing mechanism for a recording / reproducing medium according to the present invention is provided at an interval smaller than a longitudinal direction of a recording / reproducing medium having a substantially rectangular outer shape, and in a transverse direction. A pair of abutting pieces separated from each other in a direction perpendicular to the insertion direction and the thickness direction with an interval larger than the length, and between the pair of abutting pieces, and a restriction positioned on the insertion direction side of the corresponding abutting piece. A movable member having a piece and a restricting piece that is movable between a restricting position where the restricting piece prevents insertion of the recording / reproducing medium into the opening and a retracting position where the restricting piece allows insertion of the recording / reproducing medium. An urging member for urging the moving member to move from the retracted position to the regulating position, wherein the movement of the moving member from the regulating position to the retracting position is performed by a pair of a recording / reproducing medium inserted into the opening and a pair of the recording / reproducing medium. The opening is made by contact with the contact piece. When the start of insertion of the recording / reproducing medium into the opening is made in a state where the short side of the recording / reproducing medium is made to correspond to the opening, only the contact piece with the recording / reproducing medium is in contact with or the recording / reproducing medium. When the contact piece does not come into contact with the contact piece, the regulating member is not moved to the retracted position, and the insertion of the recording / reproducing medium into the opening is disabled.

According to the present invention, there is provided a recording / reproducing apparatus provided with a mechanism for preventing erroneous insertion of a recording / reproducing medium, a mounting means for mounting a recording / reproducing medium having a substantially rectangular outer shape, And a recording / reproducing medium mounted on the mounting means, or a recording / reproducing means for performing both of them, and an interval smaller than the longitudinal length of the recording / reproducing medium. And a pair of abutting pieces having a distance greater than the length in the short direction and spaced apart in a direction perpendicular to the insertion direction and the thickness direction, and a pair of abutments with the recording / reproducing medium inserted into the opening. A detection member movably disposed so as to be separated from the recording / reproducing medium in the thickness direction by contact with the piece, and between a pair of contact pieces,
In addition, there is a restriction piece located on the insertion direction side with respect to the contact piece, and the restriction piece prevents insertion of the recording / reproducing medium into the opening and retreat allowing insertion of the recording / reproduction medium into the opening. A regulating member disposed so as to be movable with the movement of the detecting member between the position and a biasing member for biasing the regulating member with a moving force from the retracted position to the regulated position,
When the start of insertion of the recording / reproducing medium into the opening is made in a state in which the short side of the recording / reproducing medium corresponds to the opening, only the recording / reproducing medium is in contact with one contact piece or the recording / reproducing is performed. When the medium does not come into contact with the contact piece, the restricting member is not moved to the retracted position, so that the recording / reproducing medium cannot be inserted into the opening.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus provided with a recording / reproducing medium erroneous insertion prevention mechanism, wherein a recording / reproducing medium having a rectangular outer shape is mounted, and the recording / reproducing medium is provided with an opening and a mounting means. And a transporting means for transporting the recording and reproducing medium mounted on the mounting means, or a recording and reproducing means for performing both, at an interval smaller than the longitudinal direction of the recording and reproducing medium, and Between a pair of abutting pieces and a pair of abutting pieces that are separated from each other in a direction orthogonal to the insertion direction and the thickness direction with an interval greater than the length in the short direction, and in the insertion direction side of the corresponding abutting pieces. And the restricting piece is movably arranged between a restricting position for preventing insertion of the recording / reproducing medium into the opening and a retracting position for permitting insertion of the recording / reproducing medium. Moving member and retracted to moving member A biasing member for biasing the moving force from the restricting position to the restricting position. The moving member moves from the restricting position to the retracted position when the recording / reproducing medium inserted into the opening comes into contact with the pair of contact pieces. When the start of insertion of the recording / reproducing medium into the opening is made in a state in which the short side of the recording / reproducing medium corresponds to the opening, only one contact piece with the recording / reproducing medium is used. The restricting member does not move to the retracted position when the recording / reproducing medium does not come into contact with the contact piece or when the recording / reproducing medium does not come into contact with the recording / reproducing medium, so that the recording / reproducing medium cannot be inserted into the opening.

Therefore, according to the present invention, the recording / reproducing medium can be inserted into the opening only when the insertion of the recording / reproducing medium into the opening is started in a specific direction.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a recording / reproducing apparatus provided with a recording / reproducing medium erroneous insertion preventing mechanism according to the present invention will be described below with reference to the accompanying drawings.

In the embodiment described below, the present invention uses a mini-disc (MD) as a recording / reproducing medium,
The present invention is applied to an MD recording / reproducing apparatus (hereinafter, simply referred to as “recording / reproducing apparatus”) capable of recording and / or reproducing information signals to / from D.

As shown in FIG. 1, the recording / reproducing apparatus 1 comprises a main body-side housing 3 held by an outer housing 2, and the main body-side housing 3 has a box-shaped chassis 4 opened forward. Chassis 4
And a front panel portion 5 which covers the front opening of the front panel. And
In the chassis 4, a disk table 6, an optical pickup 7, and the like are arranged.

The disk table 6 is provided with mounting means for mounting an MD to be described later and rotating the MD. The optical pickup 7 is provided as recording / reproducing means for recording and / or reproducing information signals on the MD, or both of them, and has an objective lens and is mounted on the side of the disk table 6. M
D is arranged to be movable in the radial direction.

Further, the MD inserted from an opening described later is transported to the disk table 6 in the main body side housing 3, and the MD that has been reproduced or recorded is transported from the disk table 6 toward the opening. Transport means (not shown) is provided.

As shown in FIG. 1, the MD 8 is formed as a media cassette composed of a flat media case 8a having a rectangular outer shape and a disk (media) 8b rotatably disposed inside the media case 8a. ing. Then, the MD 8 is positioned such that the long side A extends in the left-right direction and the short side B extends in the front-rear direction. It is designed to be inserted inside.

As shown in FIG. 2, the front panel portion 5 is formed in a rectangular shape having a horizontally long outer shape, and has an upper wall portion 9 and the upper wall portion 9.
A left wall 10 and a right wall 11 vertically extending from both left and right end portions of each of the above and a connecting wall 12 connecting the lower halves of the left wall 10 and the right wall 11 are integrally formed. .
Therefore, the front panel unit 5 includes these walls 9, 1.
An opening 13 surrounded by 0, 11, and 12 is formed, and the opening 13 is formed as an insertion / removal opening through which the MD8 is inserted / removed. The length of the opening 13 in the left-right direction is slightly larger than the long side A of the MD 8.

The front panel 5 has a width in the front-rear direction of the connecting wall 12 substantially half that of each of the walls 9, 10, and 11, and connects the front halves of the left wall 10 and the right wall 11. As a result, an arrangement space 14 that opens rearward and downward is formed on the back side of the front panel portion 5. Placement space 1
4, a plate-like spring support 15 is located at the left end, and the left edge of the spring support 15 is continuous with the left wall 10, and the front edge is near the upper end of the left end of the connection wall 12. It is formed so as to be continuous with the position.

At the center in the left-right direction of the connecting wall portion 12, a notch portion 12a which opens vertically and rearward is formed, and at positions near the left and right ends of the connecting wall portion 12, guides which open to the upper surface respectively. Holes 12b, 12b are formed. The guide holes 12b are formed in a long hole shape slightly longer in the left-right direction.

An erroneous insertion preventing mechanism 16 is disposed on the front panel portion 5 (see FIGS. 3 to 5).
Is composed of a detecting member 17, a regulating member 18, and a biasing member 19.

The detecting member 17 includes a main piece 20 and contact pieces 21 and 2.
1 and the guided shafts 22 are integrally formed.

The main piece 20 has a plate shape long in the left-right direction, and the length in the left-right direction is substantially equal to the length of the long side A of MD8.
The width in the front-rear direction is substantially the same as that of the connecting wall portion 12 of the front panel portion 5.

Contact pieces 21 and 21 projecting upward and rearward from the left and right ends of the main piece 20 are provided. The distance between the inner ends of the corresponding contact pieces 21 and 21 is longer than the long side A of the MD8. Is also smaller than the short side B. Contact piece 2
1, 21 are substantially front half portions of the lower end portions connected to the main pieces 20 and 20, respectively, a front inclined edge 21a short in the front-rear direction facing obliquely upward and forward, a rear inclined edge 21b facing obliquely upward and rear, and each inclined edge 21a. , 21b connecting the upper edges of the horizontal edges facing upward
1c. And the horizontal edge 21 of the contact piece 21
c is formed so as to be located substantially above the rear end of the main piece 20, and the rear inclined edge 21b is located on the rear side of the main piece 20 (see FIG. 7). The distance from the upper surface of the main piece 20 to the horizontal edge 21c is formed to be slightly larger than the thickness of the MD8.

The guided shafts 22, 22 project downward from positions near the left and right ends of the main piece 20.

The regulating member 18 has a plate-shaped main part 23 and an arm part 24.
Are integrally formed.

The main portion 23 is formed so that its main surface is oriented in the left-right direction, and comprises a regulating portion 25 and a receiving portion 26. The restricting portion 25 is formed to be slightly longer in the vertical direction, and the restricting edge 2 facing forward.
5a and a front bevel edge 25b that is connected to the upper edge of the regulation edge 25a and faces obliquely upward and forward; a contact edge 25c that is connected to the upper edge of the front bevel edge 25b and faces upward and a rear edge of the corresponding contact edge 25c And a rear oblique edge 25d that faces obliquely upward after the continuation.

The receiving portion 26 protrudes forward from the lower half of the regulating portion 25, and its upper edge 26a is formed as a receiving edge, and the receiving edge 26a has a circular cross-sectional shape and is upwardly convex. It is formed in an arc shape.

The arm portion 24 extends substantially in the left-right direction and projects rightward from a substantially central portion of the lower end portion of the main portion 23 in the front-rear direction. The arm 24 is a main piece 2 of the detection member 17.
It is formed to be slightly longer than half the length of 0, and has a supported hole 24a penetrating back and forth at the right end.

The biasing member 19 is a leaf spring, and
7 is formed to be slightly longer than half the length of the main piece 20.

Thus, the detecting member 17 is connected to the guided shaft 2
2 and 22 are inserted into the guide holes 12b and 12b of the front panel 5, and can be moved vertically in the opening 13 of the front panel 5 (see FIGS. 4 and 5). As described above, the guide holes 12b, 12b are formed as elongated holes slightly longer in the left-right direction, and the receiving edge 26a of the regulating member 18 is formed in an upwardly convex arc shape. The detection member 17 can be tilted so that the main piece 20 rises rightward or leftward.

The restricting member 18 has an arm 24 formed on the front panel 5.
Is rotatably supported at a portion near the rear end of the right side wall portion 11 through a supported hole 24a (see FIG. 5). Therefore, the regulating member 18 can be rotated clockwise or counterclockwise as viewed from the front-back direction.

The urging member 19 has its left end attached to the lower surface of the spring support 15 of the front panel 5 by screwing, and is rotatably supported by the front panel 5.
8 from below (see FIG. 5).
As a result, a substantially upward moving force is applied to the regulating member 18, and the contact edge 25 c of the regulating portion 25 contacts the lower surface of the upper surface wall 9 of the front panel 5. And the regulating member 1
Reference numeral 8 denotes a state in which the central portion of the main piece 20 of the detection member 17 in the left-right direction is placed on the receiving edge 26a (see FIGS. 3 to 5).

As described above, the detecting member 17 is connected to the receiving edge 26a.
When placed on the upper side, the positions of the rear ends of the horizontal edges 21c, 21c and the regulating edge 25a in the front-rear direction are substantially the same (see the enlarged view of FIG. 7).

When the detecting member 17 is placed on the receiving edge 26a and the main piece 20 is not inclined, the detecting member 1
7 is a regulating edge 25 of the regulating member 18.
a (see the enlarged view of FIG. 7), and there is a certain distance between the horizontal edges 21c, 21c and the upper surface wall 9 of the front panel 5, and the distance is equal to that of the MD8. It is smaller than the thickness.

The receiving portion 26 of the regulating member 18 is arranged in the notch 12a of the front panel 5, so that the notch 12a does not interfere with the connecting wall 12 of the front panel 5.

An opening 1 is provided on the front of the front panel 5.
A concealing member (not shown) that covers a part of 3 is provided, and the concealing member prevents the main piece 20 of the regulating member 17 and its lower part from being exposed from the outside.

The operation of the erroneous insertion prevention mechanism 16 when the MD 8 is inserted into the opening 13 will be described below (see FIGS. 6 to 18).

First, when an attempt is made to insert the MD 8 into the opening 13 with the long side A of the MD 8 corresponding thereto, that is, with the long side A extending in the left-right direction and the short side B extending in the front-rear direction. A description will be given of a case in which this is attempted (see FIGS. 6 to 12). In addition, when inserting in such a state,
This is a case where the MD8 is inserted in an appropriate direction.

When the MD 8 is inserted backward from the front of the opening 13, the right and left ends of the lower edge of the MD 8 are detected by the detecting members 17.
Abut on the front inclined edges 21a, 21a of the contact pieces 21, 21 (see FIGS. 6 and 7). Since the guided shafts 22, 22 are supported by the guide holes 12b, 12b formed slightly longer in the left-right direction, the detection member 17 can move in the opening 13 within a certain range in the left-right direction. Although it is possible, even when the detection member 17 is moved to the left or right in the opening 13, when the MD 8 is inserted in an appropriate direction, the formation positions of the guide holes 12b, 12b,
The size of the opening 13 in the left-right direction and the main piece 2 of the detection member 17
From the relationship between the length in the left-right direction and the thickness of the contact pieces 21, the left and right ends of the MD 8 are always the front inclined edges 2.
1a and 21a.

When MD8 is inserted further backward, M8
D8 has its left and right ends slidingly in contact with the front inclined edges 21a, 21a, and gets over the front inclined edges 21a, 21a to reach the horizontal edges 21c, 21c. In addition, MD8 is the opening 13
Before insertion into the MD8, the distance between the horizontal edges 21c, 21c of the detection member 17 and the upper wall 9 of the front panel 5 is smaller than the thickness of the MD8, as described above. The detection member 17 is moved by the
Move downward together with the regulating member 18 against the spring force of the urging member 19.

Since the horizontal edges 21c and 21c of the detecting member 17 are located slightly above the restricting edge 25a of the restricting member 18 as described above, when the MD 8 is further inserted backward, the center in the left-right direction is obtained. The lower edge of the portion comes into sliding contact with the front oblique edge 25b of the regulating member 18 (see FIGS. 8 and 9).

When the MD 8 slides in contact with the front bevel 25b due to the rearward movement of the MD 8, the regulating member 18
Is moved downward against the spring force of the urging member 19, and then the lower surface of the MD 8 is slid in contact with the contact edge 25c (FIG. 1).
0 and FIG. 11). At this time, the detection member 17 is moved downward while being in contact with the receiving edge 26a by its own weight due to the downward movement of the regulating member 18.

Then, by inserting the MD 8 backward, the MD 8 is completely inserted into the main body side housing 3 through the opening 13 (see FIG. 12). It is designed to be mounted on the table 6.

When the MD 8 is completely inserted into the housing 3 on the body side, the detecting member 17 and the regulating member 18
It returns to the original position by the spring force of No. 9 (see FIG. 12).

The removal of the MD 8 from the inside of the main body side housing 3 to the outside is performed as follows (FIGS. 13 and 1).
4).

When the MD 8 is conveyed toward the opening 13 by the conveying means, the lower edge of the central portion of the MD 8 in the left-right direction comes into contact with the rear oblique edge 25d of the regulating member 18 (see FIG. 13).

When the MD 8 is further moved forward from the disc table 6 by the transport means, the lower edge of the MD 8 and the rear oblique edge 25 d of the regulating member 18 come into sliding contact with each other. It is rotated and moved downward against the spring force. At this time, the detecting member 17 is
Is moved downward by its own weight while being in contact with the receiving edge 26a.

When the MD 8 is further moved forward, the lower surface of the MD 8 comes into sliding contact with the contact edge 25c of the regulating member 18 and thereafter reaches a predetermined position (see FIG. 14). And
When the MD 8 reaches the predetermined position, the MD 8 is gripped and taken out of the main body side housing 3.

When the MD 8 is completely inserted into the main body side housing 3, the detecting member 17 and the regulating member 18 move to the urging member 1.
It returns to the original position by the spring force of No. 9.

Next, the short side B of the MD 8 is erroneously inserted into the opening 13.
Will be described in a state where the long side A extends in the front-rear direction and the short side B extends in the left-right direction (FIGS. 15 to 18). reference).

When the MD 8 is inserted in the wrong direction, as described above, the detection member 17
Since the distance between the inner ends of the contact pieces 21 and 21 is larger than the short side B, the MD 8 may contact only one of the left and right ends of the lower edge with the contact piece 21, Alternatively, neither end comes into contact with the contact pieces 21, 21.

First, a case where only one of the left and right ends of the MD 8 contacts the contact piece 21 will be described. Hereinafter, a case where only the right end of the MD 8 contacts the contact piece 21 will be described as an example (see FIGS. 15 and 16).

When the MD 8 is inserted rearward, only the right end portion has the front inclined edge 21 a of the right contact piece 21 of the detection member 17.
The right end of the MD 8 and the front inclined edge 21a of the right contact piece 21 are slid in contact with each other by being further inserted rearward. Since only the right end of the MD 8 slides on the contact piece 21 and the left end does not slide on the contact piece 21, the detection member 17 is inclined downward and to the right when viewed from the front.

On the other hand, the regulating member 18 is not moved downward because the detecting member 17 is not moved downward but only tilted.

When MD8 is inserted further backward, M
D8 reaches the horizontal edge 21c with its right end riding over the front inclined edge 21a.

Since the regulating member 18 is not moved downward, when the MD 8 reaches the horizontal edge 21c, the regulating edge 25a of the regulating member 18 is located facing the rear surface of the MD 8. Therefore, even if the MD 8 is further moved rearward, the rear surface of the MD 8 abuts on the regulating edge 25a to restrict its movement, and the MD 8 cannot move further backward (see FIGS. 15 and 16).

Next, the contact piece 2 is provided at both left and right ends of the MD8.
17 and 21 are not described (FIG. 17).
And FIG. 18).

When the MD 8 is inserted rearward, neither of the right and left ends comes into contact with the contact pieces 21 of the detecting member 17, so that the detecting member 17 and the regulating member 18 are not moved downward. Therefore, even if the MD 8 is further moved backward, the M
The regulating member 1 having the rear surface of D8 opposed thereto.
8 is abutted against the regulating edge 25a, and its movement is regulated.
8 cannot move backward any further (see FIGS. 17 and 18).

As described above, in the recording / reproducing apparatus 1 described above, the MD 8 is oriented in the proper direction, that is, the long side A
When the MD 8 is to be inserted into the opening 13 in a direction corresponding to the opening 13, the MD 8 is smoothly inserted into the main body side housing 3 from the opening 13, and the MD 8 is improperly oriented, that is, the long side B In the direction corresponding to the opening 13
When the user tries to insert the MD 8 into the main body 3, the erroneous insertion preventing mechanism 16 prevents the MD 8 from being inserted into the main body side housing 3 through the opening 13.

Therefore, erroneous insertion of the MD 8 into the opening 13 can be prevented at the stage when insertion into the opening 13 is started.

Further, since the MD8 is prevented from being erroneously inserted at the stage when the insertion into the opening 13 is started, each mechanism provided inside the main body side housing 3 does not come into contact with the MD8. As a result, it is possible to prevent a problem that the MD 8 or each mechanism is damaged.

Furthermore, the required parts for erroneous insertion prevention mechanism 16 to be disposed in main body side housing 3 and the front surface located on the front side of main body side housing 3 without being provided in the vicinity of each mechanism are provided. Since it is arranged on the panel section 5, the internal structure in the main body side casing 3 does not become complicated.

Next, a modification 16A of the erroneous insertion preventing mechanism 16 will be described (see FIGS. 19 and 20). In the modification 16A, the number of components is reduced by forming the detection member 17 and the regulating member 18 of the erroneous insertion prevention mechanism 16 as one moving member.

In the description of the modification 16A,
Only the differences between the modified example 16A and the above-described embodiment will be described, and the same parts as those described in the above-described embodiment will be denoted by the same reference numerals as those of the similar parts in the above-described embodiment. The description will be omitted by attaching the symbol.

The front panel 5 has an erroneous insertion preventing mechanism 16A.
The erroneous insertion prevention mechanism 16A includes a moving member 27 and a biasing member 19.

The moving member 27 comprises a main piece 28 and a contact piece 29,2.
9, the guided shafts 30, 30, the regulating piece 31, and the projecting piece 32 are integrally formed.

The main piece 28 is formed in a long plate shape in the left-right direction, and the length in the left-right direction is substantially the same as the length of the long side A of the MD8.
The width in the front-rear direction is longer than that of the connecting wall portion 12 of the front panel portion 5.

From the left and right ends of the main piece 28, a contact piece 29,
29, the corresponding contact pieces 29, 29 are the same as the contact pieces 21, 21 of the detection member 17 of the erroneous insertion prevention mechanism 16, and each of the front inclined edges 29a faces obliquely upward and forward.
And the rear inclined edges 29b and each inclined edge 29 facing obliquely upward and rearward.
a, 29b, which has a horizontal edge 29c that connects the upper edges and faces upward.

The guided shafts 30, 30 project downward from positions near the front end at positions near the left and right ends of the main piece 28.

The regulating piece 31 projects upward from the central portion of the main piece 28 in the left-right direction, is formed in a shape similar to the substantially upper half of the regulating portion 25 of the regulating member 18, and regulates forward. The front bevel edge 31b which is continuous with the edge 31a and the upper edge of the regulation edge 31a and faces obliquely upward and forward, and the contact edge 31c which is continuous with the upper edge of the front bevel edge 31b and faces upward, and the corresponding contact edge 31c
And a rear oblique edge 31d that is continuous with the rear edge and faces obliquely upward. The amount of upward protrusion of the regulating piece 31 from the main piece 28 is slightly larger than that of the contact pieces 29 and 29. In addition, the rear end of the rear inclined edge 31d has a main piece 28.
It is located slightly behind. The positions of the regulating edge 31a and the rear end of the horizontal edge 29c in the front-rear direction are substantially the same.

The projecting piece 32 projects downward from the central portion of the main piece 28 in the left-right direction.

In the erroneous insertion preventing mechanism 16A, the guided shafts 30, 30 of the moving member 27 are inserted into the guide holes 12b, 12b of the front panel 5, and the moving member 27 is inserted into the opening 13 of the front panel 5. It can be moved up and down. In addition, it is possible to incline the main piece 28 so as to rise rightward or leftward.

The urging member 19 is elastically contacted with the projecting piece 32 of the moving member 27 from below, and the moving member 27 is urged with an upward moving force.

When the MD 13 is to be inserted into the opening 13 with the long side A of the MD 8 corresponding thereto, the left and right ends of the lower edge of the MD 8 are located on the front sides of the contact pieces 29, 29 of the moving member 27. The horizontal edges 29c, 2 are in sliding contact with the inclined edges 29a, 29a.
9c, and furthermore, the front bevels 31b, 3b
The MD 8 is inserted into the main body side housing 3 without abutting on the regulating edge 31 a of the regulating piece 31 by sliding to the contact edges 31 c and 31 c. At this time, the moving member 27 is moved downward against the spring force of the urging member 19.

On the other hand, the short side B
If the MD 8 is to be inserted in correspondence, either one of the left and right ends is in contact with the contact piece 29, or both ends are in contact with the contact pieces 29, 29. It will not be in the state.

When only one of the left and right ends of the MD 8 comes into contact with the contact piece 21, the moving member 27 only tilts rightward or leftward and does not move downward. Abuts on the regulating edge 31a located opposite to the rear surface, the movement thereof is regulated, and it cannot move further backward.

When neither of the right and left ends of the MD 8 comes into contact with the contact pieces 29, 29 of the moving member 27, the moving member 27 is neither tilted nor moved downward, and the MD 8 is moved rearward. The movement is restricted by contacting the restricting edge 31a which is positioned opposite to the position, so that it cannot move further backward.

Therefore, even when the erroneous insertion prevention mechanism 16A is used in place of the erroneous insertion prevention mechanism 16, the same effect as that of the erroneous insertion prevention mechanism 16 can be obtained.
3 can be prevented at the stage when the insertion into the opening 13 is started.

In the erroneous insertion prevention mechanism 16A,
Since there are only two members, the moving member 27 and the urging member 19, the number of components is small and the cost can be reduced.

Although the MD8 has been described as a recording / reproducing medium in the above embodiment, any recording / reproducing medium having a substantially rectangular outer shape can be used in the present invention. A so-called tape cassette having a disk-shaped recording / reproducing medium or a tape-shaped recording medium such as an optical disk, a magnetic disk, and a magneto-optical disk, which is arranged in a media case and formed as a media cassette, or various kinds of information are recorded. What is called IC (Inte
grated circuit) A recording / reproducing medium such as a card can be used.

[0087]

As is apparent from the above description, the erroneous insertion preventing mechanism of the recording / reproducing medium of the present invention has a substantially rectangular outer shape, and is capable of recording and / or reproducing information signals, or both. A mechanism for preventing erroneous insertion of the recording / reproducing medium into the opening of the recording / reproducing medium to be inserted, wherein the interval is smaller than the length in the longitudinal direction of the recording / reproducing medium, and the interval is larger than the length in the short direction. It has a pair of contact pieces that are separated in a direction orthogonal to the insertion direction and the thickness direction, and the recording / reproducing medium inserted into the opening and the pair of contact pieces come into contact with each other to cause the thickness direction from the recording / reproducing medium. A detection member movably disposed to be separated from the contact piece, between the pair of abutting pieces, and a regulating piece located on the insertion direction side of the contact piece, and the regulating piece is moved to the opening. Regulatory position to prevent insertion of recording / reproducing media A restricting member movably arranged with the movement of the detecting member between the detecting member and the retreat position allowing insertion of the recording / reproducing medium into the opening, and a moving force of the restricting member from the retreat position to the restricting position. A biasing member for biasing the recording / reproducing medium. When the insertion of the recording / reproducing medium into the opening is started with the longitudinal direction of the recording / reproducing medium corresponding to the opening, a pair of the recording / reproducing medium is provided. When the contact piece comes into contact with the contact piece, the regulating member moves to the retracted position, and the recording / reproducing medium can be inserted into the opening. When the recording is performed with the directions corresponding to each other, the recording member does not move to the retracted position because the recording / reproducing medium is in contact with only one contact piece or the recording / reproducing medium is not in contact with the contact piece. It will be impossible to insert the playback medium into the opening , It is possible to prevent erroneous insertion into the opening of the recording medium at the stage of insertion into the opening is initiated.

Further, since the erroneous insertion of the recording / reproducing medium is prevented at the stage when the insertion into the opening is started, each mechanism provided inside the recording / reproducing apparatus using the recording / reproducing medium and the recording / reproducing medium are used. Can be prevented from coming into contact with each other, which can prevent the recording / reproducing medium and each mechanism from being damaged.

Further, since the erroneous insertion prevention mechanism is not provided in the vicinity of the required parts or mechanisms provided in the recording / reproducing apparatus, the internal structure of the recording / reproducing apparatus becomes complicated. Nothing.

Another erroneous insertion preventing mechanism for a recording / reproducing medium according to the present invention has a substantially rectangular outer shape and is used for recording or reproducing information signals.
Or, a mechanism for preventing erroneous insertion of the recording / reproducing medium for insertion into the opening of the recording / reproducing medium in which both are performed, at intervals smaller than the longitudinal direction of the recording / reproducing medium, and
Between a pair of abutting pieces and a pair of abutting pieces that are separated from each other in a direction orthogonal to the insertion direction and the thickness direction with an interval greater than the length in the short direction, and in the insertion direction side of the corresponding abutting pieces. And the restricting piece is movably arranged between a restricting position for preventing insertion of the recording / reproducing medium into the opening and a retracting position for permitting insertion of the recording / reproducing medium. A movable member, and an urging member for urging the movable member to move from the retracted position to the regulated position, wherein the movement of the movable member from the regulated position to the retracted position is performed by a recording / reproduction inserted into the opening. When the medium is brought into contact with a pair of abutting pieces and insertion of the recording / reproducing medium into the opening is started with the longitudinal direction of the recording / reproducing medium corresponding to the opening, recording / reproducing is performed. The moving member is brought into contact with the medium by a pair of contact pieces. The recording / reproducing medium can be inserted into the opening by moving to the retracted position, and the insertion of the recording / reproducing medium into the opening is started in a state where the short side of the recording / reproducing medium corresponds to the opening. Sometimes, the moving member is not moved to the retracted position because the recording / reproducing medium is in contact with only one contact piece or the recording / reproducing medium is not in contact with the contact piece, and the recording / reproducing medium cannot be inserted into the opening. Therefore, erroneous insertion of the recording / reproducing medium into the opening can be prevented at the stage when insertion into the opening is started.

Further, since the erroneous insertion of the recording / reproducing medium is prevented when the insertion into the opening is started, each mechanism provided inside the recording / reproducing apparatus using the recording / reproducing medium, the recording / reproducing medium, Can be prevented from coming into contact with each other, which can prevent the recording / reproducing medium and each mechanism from being damaged.

Further, since the erroneous insertion preventing mechanism is not provided in the vicinity of the required parts disposed in the recording / reproducing apparatus or in the vicinity of the respective mechanisms, the internal structure of the recording / reproducing apparatus becomes complicated. Nothing.

In addition, since the erroneous insertion preventing mechanism has only two members, the moving member and the urging member, the number of parts is small and the cost can be reduced.

Further, the recording / reproducing apparatus provided with the erroneous insertion preventing mechanism of the recording / reproducing medium of the present invention has a substantially rectangular outer shape, and records and / or reproduces an information signal, or performs both of them. What is claimed is: 1. A recording / reproducing apparatus provided with a mechanism for preventing an erroneous insertion of a recording / reproducing medium with respect to insertion of a medium into an opening, wherein: a mounting means on which the recording / reproducing medium is mounted; Transport means for transporting between the recording and reproducing medium mounted on the mounting means, or recording and reproducing means for performing both, at an interval smaller than the longitudinal length of the recording and reproducing medium, and Having a pair of abutting pieces separated from each other in a direction perpendicular to the insertion direction and the thickness direction with an interval larger than the length in the short direction, and a recording / reproducing medium inserted into the opening and a pair of abutting pieces. Recording and playback by touching A detection member which is movably disposed so as to be separated in the thickness direction from the body, between the pair of contact pieces,
In addition, there is a restriction piece located on the insertion direction side with respect to the contact piece, and the restriction piece prevents insertion of the recording / reproducing medium into the opening and retreat allowing insertion of the recording / reproduction medium into the opening. A regulating member disposed so as to be movable with the movement of the detecting member between the position and a biasing member for biasing the regulating member with a moving force from the retracted position to the regulated position,
When the insertion of the recording / reproducing medium into the opening is started with the longitudinal direction of the recording / reproducing medium corresponding to the opening, the regulating member is retracted due to the contact between the recording / reproducing medium and the pair of contact pieces. Position, the recording / reproducing medium can be inserted into the opening, and insertion of the recording / reproducing medium into the opening is started in a state in which the opening corresponds to the lateral direction of the recording / reproducing medium. When the recording / reproducing medium comes into contact with only one contact piece or the recording / reproducing medium does not come into contact with the contact piece, the regulating member is not moved to the retracted position, and it is impossible to insert the recording / reproducing medium into the opening. Therefore, erroneous insertion of the recording / reproducing medium into the opening can be prevented when the insertion into the opening is started.

Further, since the erroneous insertion of the recording / reproducing medium is prevented when the insertion into the opening is started, each mechanism provided inside the recording / reproducing apparatus does not come into contact with the recording / reproducing medium. Thus, it is possible to prevent the occurrence of problems such as damage to the recording / reproducing medium and each mechanism.

Further, since the erroneous insertion preventing mechanism is not provided in the vicinity of the required parts and mechanisms provided in the recording / reproducing apparatus, the internal structure of the recording / reproducing apparatus becomes complicated. Nothing.

A recording / reproducing apparatus provided with another recording / reproducing medium erroneous insertion preventing mechanism of the present invention has a substantially rectangular outer shape, and records and / or reproduces an information signal, or both of them. What is claimed is: 1. A recording / reproducing apparatus provided with a mechanism for preventing an erroneous insertion of a recording / reproducing medium with respect to insertion of a medium into an opening, wherein: a mounting means on which the recording / reproducing medium is mounted; And a recording / reproducing means for recording or reproducing the recording / reproducing medium mounted on the mounting means, or a recording / reproducing means for performing both of them, at an interval smaller than the longitudinal direction of the recording / reproducing medium, and Between a pair of abutting pieces and a pair of abutting pieces separated from each other in a direction perpendicular to the insertion direction and the thickness direction with an interval larger than the length in the hand direction, and on the insertion direction side of the corresponding piece. And a regulating piece located A moving member disposed so that the piece is movable between a restricting position where the recording / reproducing medium is prevented from being inserted into the opening and a retracting position where the restricting piece allows the recording / reproducing medium to be inserted; An urging member for urging the moving force toward the regulating position, wherein the movement of the moving member from the regulating position to the retreat position comes in contact with the recording / reproducing medium inserted into the opening and the pair of contact pieces. When the start of insertion of the recording / reproducing medium into the opening is made in a state where the longitudinal direction of the recording / reproducing medium is made to correspond to the opening,
When the recording / reproducing medium comes into contact with the pair of abutting pieces, the moving member moves to the retracted position, and the recording / reproducing medium can be inserted into the opening. When the moving member is made in a state where the short side of the recording / reproducing medium is corresponding to the recording / reproducing medium, the moving member may be in contact with only one contact piece or the recording / reproducing medium may not contact with the contact piece. Since the recording / reproducing medium cannot be inserted into the opening without being moved to the retreat position, erroneous insertion of the recording / reproducing medium into the opening can be prevented when the insertion into the opening is started.

Further, since the erroneous insertion of the recording / reproducing medium is prevented at the stage when the insertion into the opening is started, each mechanism provided inside the recording / reproducing apparatus does not come into contact with the recording / reproducing medium. Thus, it is possible to prevent the occurrence of problems such as damage to the recording / reproducing medium and each mechanism.

Further, since the erroneous insertion preventing mechanism is not provided in the vicinity of the required parts or mechanisms provided in the recording / reproducing apparatus, the internal structure of the recording / reproducing apparatus becomes complicated. Nothing.

In addition, since the erroneous insertion prevention mechanism has only two members, the moving member and the urging member, the number of components is small and the cost can be reduced.

Incidentally, the specific shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the embodiment when practicing the present invention.
These should not be construed as limiting the technical scope of the present invention.

[Brief description of the drawings]

1 shows an embodiment of a recording / reproducing apparatus provided with an erroneous insertion preventing mechanism for a recording / reproducing medium and an erroneous insertion preventing mechanism for a recording / reproducing medium according to the present invention, together with FIGS. 2 to 20; FIG. 1 is a schematic perspective view of a recording / reproducing apparatus to which the invention is applied.

FIG. 2 is an enlarged perspective view showing a state in which a front panel portion is viewed from a back side.

FIG. 3 is an enlarged perspective view of an erroneous insertion prevention mechanism.

FIG. 4 is an enlarged front view showing a state where an erroneous insertion preventing mechanism is arranged on a front panel portion.

FIG. 5 is an enlarged rear view showing a state where an erroneous insertion preventing mechanism is arranged on a front panel portion.

FIG. 6 shows the operation of the erroneous insertion prevention mechanism when the insertion of the MD is started in an appropriate direction together with FIGS. 7 to 12, and this figure shows a state immediately after the insertion of the MD is started. It is an enlarged front view.

FIG. 7 is an enlarged side view showing a state immediately after the insertion of the MD is started.

FIG. 8 is an enlarged front view showing a state in which the MD is in sliding contact with the front oblique edge of the regulating member, following FIG. 6;

FIG. 9 is an enlarged side view showing a state in which the MD is in sliding contact with the front oblique edge of the regulating member, following FIG. 7;

FIG. 10 is an enlarged front view showing a state in which the MD is in sliding contact with the contact edge of the regulating member, following FIG. 8;

FIG. 11 is an enlarged side view showing a state in which the MD is in sliding contact with the contact edge of the regulating member, following FIG. 9;

FIG. 12 is an enlarged side view showing a state where the MD is completely inserted into the main body side housing, following FIG. 11;

13 shows the operation of the erroneous insertion prevention mechanism when the MD is ejected to the outside together with FIG. 14, and FIG. 13 is an enlarged side view showing a state in which the MD is in contact with the rear bevel of the regulating member. It is.

FIG. 14 is an enlarged side view showing a state where a part of the MD is discharged outside.

FIG. 15 shows the operation of the erroneous insertion prevention mechanism when the insertion of the MD is started in an inappropriate direction and the MD is brought into contact with only one contact piece together with FIG. 16, and FIG.
FIG. 4 is an enlarged front view showing a state where insertion of a sword is prevented.

FIG. 16 is an enlarged side view showing a state where insertion of an MD is prevented.

17 shows the operation of the erroneous insertion prevention mechanism in the case where the insertion of the MD is started in an improper direction and the MD does not come into contact with any of the contact pieces together with FIG. 18, and FIG.
FIG. 4 is an enlarged front view showing a state where insertion of a sword is prevented.

FIG. 18 is an enlarged side view showing a state where insertion of an MD is prevented.

FIG. 19 shows a modification of the erroneous insertion prevention mechanism together with FIG. 20, and this figure is an enlarged perspective view.

FIG. 20 is an enlarged rear view showing a state in which an erroneous insertion preventing mechanism is arranged on a front panel portion.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Recording / reproducing apparatus, 6 ... Disc table (mounting means), 7 ... Optical pickup (recording / reproducing means), 8 ... M
D (recording / reproducing medium), 13: opening, 16: erroneous insertion prevention mechanism, 17: detecting member, 18: regulating member, 19: urging member, 21: contact piece, 25: regulating section (regulating piece), 16A ...
Mis-insertion prevention mechanism, 27: moving member, 29: contact piece, 31
… Regulatory piece

Claims (4)

[Claims] 1. A recording / reproducing medium having a substantially rectangular outer shape for recording and / or reproducing an information signal or both of them (hereinafter, the direction in which each side of the recording / reproducing medium extends is referred to as a “longitudinal direction”).
They are referred to as “transverse direction” and “thickness direction”. ) Is inserted into the opening (hereinafter, the direction in which the recording / reproducing medium is inserted into the opening is referred to as an “insertion direction”). Having a pair of abutting pieces spaced apart in the direction perpendicular to the insertion direction and the thickness direction at intervals smaller than the length of the recording medium and at a distance greater than the length in the short direction, and recording / reproduction inserted into the opening A detecting member movably disposed so as to be separated from the recording / reproducing medium in the thickness direction by contact between the medium and the pair of abutting pieces, and inserted between the pair of abutting pieces and more than the corresponding abutting pieces; The detecting member has a restricting piece located on the side of the direction, and the detecting piece moves between a restricting position where the restricting piece prevents insertion of the recording / reproducing medium into the opening and a retracting position allowing insertion of the recording / reproducing medium into the opening. A rule that is placed movably with the movement And a biasing member for biasing the regulating member with a moving force from the retracted position to the regulating position, wherein the insertion of the recording / reproducing medium into the opening starts in the longitudinal direction of the recording / reproducing medium. When the recording / reproducing medium is made to correspond to the recording / reproducing medium, the restricting member moves to the retracted position when the recording / reproducing medium comes into contact with the pair of abutting pieces, and the recording / reproducing medium can be inserted into the opening. When the insertion of the recording / reproducing medium is started in a state where the short side of the recording / reproducing medium corresponds to the opening, only the abutment piece contacts the recording / reproducing medium or contacts the recording / reproducing medium. An erroneous insertion prevention mechanism for a recording / reproducing medium, wherein the restricting member is not moved to the retracted position due to non-contact with the piece, and the recording / reproducing medium cannot be inserted into the opening. 2. A mechanism for preventing an erroneous insertion of a recording / reproducing medium into or out of an opening of a recording / reproducing medium for recording or reproducing an information signal, or both of them, in a substantially rectangular shape. A pair of abutting pieces and a pair of abutting pieces separated at a distance smaller than the longitudinal direction of the recording / reproducing medium and larger than the length of the recording / reproducing medium in a direction perpendicular to the insertion direction and the thickness direction. A regulating piece positioned between the contact pieces and on the insertion direction side of the contact piece, wherein the regulating piece prevents the recording / reproducing medium from being inserted into the opening; and the regulating piece is a recording / reproducing medium. A movable member movably arranged between a retracted position that allows insertion of the moving member and an urging member that urges the movable member to move from the retracted position to the regulated position, and retracts from the regulated position. The movement of the moving member to the position is recorded into the opening When the start of insertion of the recording / reproducing medium into the opening is performed with the longitudinal direction of the recording / reproducing medium corresponding to the opening, the recording is performed when the reproducing medium is brought into contact with the pair of contact pieces. When the reproducing medium comes into contact with the pair of abutting pieces, the moving member moves to the retracted position, and the recording / reproducing medium can be inserted into the opening, and the start of insertion of the recording / reproducing medium into the opening starts at the opening. When the recording / reproducing medium is made in a state where the short sides correspond to each other, the moving member is retracted because the recording / reproducing medium is in contact with only one contact piece or the recording / reproducing medium is not in contact with the contact piece. A mechanism for preventing erroneous insertion of a recording / reproducing medium, wherein the recording / reproducing medium cannot be inserted into an opening without being moved to a position. 3. A mechanism for preventing an erroneous insertion of a recording / reproducing medium into or out of an opening of a recording / reproducing medium for recording or reproducing an information signal or for performing both of them in a substantially rectangular shape. A recording / reproducing apparatus provided, comprising: mounting means for mounting a recording / reproducing medium; conveying means for conveying the recording / reproducing medium between an opening and the mounting means; and recording / reproducing medium mounted on the mounting means. A recording / reproducing means for recording or reproducing, or both of them, at an interval smaller than the longitudinal length of the recording / reproducing medium, and at intervals larger than the length in the lateral direction, in the insertion direction and the thickness direction. It has a pair of contact pieces that are separated in the orthogonal direction, and is movably arranged so as to be separated from the recording and playback medium in the thickness direction by the contact between the recording and playback medium inserted into the opening and the pair of contact pieces. Detection member, Between the pair of abutting pieces, and having a regulating piece located on the insertion direction side of the contact piece, the regulating piece prevents the recording / reproducing medium from being inserted into the opening. A regulating member movably arranged with the movement of the detecting member between the retracted position allowing the insertion of the recording / reproducing medium, and a biasing member for urging the regulating member to move from the retracted position to the regulated position. When the start of insertion of the recording / reproducing medium into the opening is performed with the longitudinal direction of the recording / reproducing medium corresponding to the opening, the recording / reproducing medium and the pair of contact pieces come into contact with each other. As a result, the regulating member moves to the retracted position, and the recording / reproducing medium can be inserted into the opening, and the start of insertion of the recording / reproducing medium into the opening corresponds to the short side of the recording / reproducing medium. When made in the state, the contact piece with the recording / reproducing medium The recording / reproducing medium is characterized in that the restricting member is not moved to the retreat position and the recording / reproducing medium cannot be inserted into the opening portion because the recording / reproducing medium does not come into contact with the abutment piece or the recording / reproducing medium does not come into contact. Recording / reproducing apparatus provided with an erroneous insertion prevention mechanism. 4. A mechanism for preventing an erroneous insertion of a recording / reproducing medium into or out of an opening of a recording / reproducing medium for recording and / or reproducing an information signal and / or performing an information signal in a substantially rectangular shape. A recording / reproducing apparatus provided, comprising: mounting means for mounting a recording / reproducing medium; conveying means for conveying the recording / reproducing medium between an opening and the mounting means; and recording / reproducing medium mounted on the mounting means. A recording / reproducing means for performing recording or reproduction, or both, at a distance smaller than the longitudinal direction of the recording / reproducing medium, and with a distance larger than the length in the transverse direction, and perpendicular to the insertion direction and the thickness direction. A pair of abutting pieces separated in the direction and a regulating piece positioned between the pair of abutting pieces and in the insertion direction with respect to the corresponding abutting piece, and the regulating piece is provided on the recording medium on the opening. The restriction position and the restriction piece that prevent the insertion of A moving member disposed so as to be movable between a retracted position allowing insertion of the recording / reproducing medium, and an urging member for urging the moving member to move from the retracted position to the regulated position. The movement of the moving member from the position to the retracted position is performed by contact between the recording / reproducing medium inserted into the opening and the pair of contact pieces, and the start of the insertion of the recording / reproducing medium into the opening starts at the opening. When the recording / reproducing medium is made to correspond to the longitudinal direction, the moving member moves to the retreat position by the contact between the recording / reproducing medium and the pair of abutting pieces, so that the recording / reproducing medium is inserted into the opening. When the start of the insertion of the recording / reproducing medium into the opening is made with the short side of the recording / reproducing medium corresponding to the opening, whether the recording / reproducing medium and only one contact piece are in contact with each other. Or make sure that the recording / reproducing medium does not Moving member inserted crippled by that recording and reproducing apparatus erroneous insertion prevention mechanism of the recording and reproducing medium is provided, wherein in the opening of the recording and reproducing medium without being moved to the retracted position by.