JPH0766608B2 - Recording disk playback device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording disk reproducing apparatus capable of automatically reproducing a disk by taking out the disk from a disk case accommodating a disk-shaped recording medium (hereinafter referred to as a disk). It is about.

2. Description of the Related Art Conventionally, in a reproducing device such as a high-density recording disk, for example, a video disc, a disc contained in a cylindrical disc case is manually inserted into the reproducing device as in JP-A-56-111158. There were many playback devices that searched for a semi-automatic loading method that manually took out the empty case, but in this case it was necessary to move the case back and forth, and a loading mechanism that performs a complete operation for the severe use of the user. There were a number of problems such as the difficulty of configuration. There is also a market demand that a tape cassette is automatically loaded from the front such as a VTR, and there is a demand in the market that even conventional audio players are being automatically loaded. JP-A-59-93221 and the like have been proposed. This is provided with a holding means for holding the disc and a transfer means for transferring the holding device in the reproducing device, and the user can insert and remove the disc from the case automatically by only inserting the disc case into the reproducing device. It is a thing. In this structure, the disc and the carrier holding the lid are automatically guided by one rail to reciprocate in the reproducing device to take in and out the disc, and the disc reproducing means is guided by the other rail to move the disc. It moves back and forth on the recording surface.

An example of the conventional recording disk reproducing apparatus described above will be described below with reference to the drawings.

FIGS. 4A, 4B, and 4C are external views of a conventional recording disk reproducing device. The playback device body 50 is a chassis 40,
It is composed of an outer case 50a, a turntable 130, and an arm housing 120. The arm housing 120 is equipped with a reproducing head. A movable base 91 is installed on the chassis 40 so that it can be moved back and forth (arrows X ₁ and X ₂ directions).
Claw-shaped releasing members serving as lid releasing means at both ends of the movable base 91.
107 and 108 are provided. The release members 107 and 108 release the engagement between the case body 2 (FIG. 5) and the lid 3. The movable base 91 is further provided with a disc holding mechanism 90 serving as a means for holding the disc 6. Disk holding mechanism
90 is the upper clamp arm 95 attached to the movable base 91
And a lower clamp arm 96. On both sides of the clamp arms 95 and 96, lid locking members 99 and 100, which are lid locking means for locking the lid 3, are horizontally rotatably attached to the movable base 91.

Next, the whole will be described in detail.

FIGS. 5 to 7 show configurations of a disc and a disc case which can be used in the recording disc reproducing apparatus according to the conventional example and the example, respectively. In FIG. 6, the disk 6 has a central hole 34, and is provided with a bank-shaped outer peripheral group guard 33 and an inner peripheral group guard 32. 7th
In the figure, a rectangular disk case 1 includes a disk case body 2 (hereinafter referred to as a case) and a lid 3 which is detachably coupled to an opening 7 provided on the front side of the case 2 in the insertion direction X ₁ of the apparatus. It is composed of and. The case 2 and the lid 3 are made of styrene resin, for example. The inside of the case 2 is a flat disk storage space 5 over the entire width and the entire length thereof, and a disk 6 is stored in the space 5. This space 5 has the opening 7 on the insertion direction X ₁ side.
And the other three sides are closed. As shown in the figure, the case 2 includes a flat plate portion 8 having groove-shaped recesses 17 on the left and right,
It consists of ridges 9, 10, 11 along the three edges. Opening 7
An engaging hole into which a convex portion of the lid 3 described later is engaged in the center near the
13 is formed, and engaging holes 16 with which the protrusions of the lid 3 engage are formed on the left and right of the opening 7.

A flange portion 18 for closing the opening 7 of the case 2 when the lid 3 is engaged and fixed to the case 2 is provided at an end portion of the lid 3, and the expanding member described later is symmetrical with respect to the center line (l). Is provided with a notch 19 through which the entry can be made. The end portion of the lid 3 is further provided with a protrusion 24 for engaging the above-mentioned engaging hole 16 and fixing the lid 3 to the case 2.
A leaf spring 25 having a tip is provided. An inclined portion 26 that engages with the release member of the lid 3 is provided at the tip of the protrusion 24. FIG. 5 shows a state in which the disc 6 and the lid 3 are assembled in the case 2, and the disc 6 is locked in the depth and width directions. Further, since the lid 3 is engaged with the case 2 and the opening 7 is closed, the disk 6 is housed without dropping out of the case 2.

FIG. 7 (A) is a detailed view of the lid 3, in which the shape on the side facing the disk 6 is formed, for example, by an arc whose gaps at both ends are larger than the gap at the center. This is to ensure stable operation even when the relative positions of the lid 3 and the disk 6 are slightly shifted in the Z direction during the reproducing operation described later.

In addition, 290 is whether the recording surface of the disc is side 1 or side 2,
The signal is a plurality of concave and convex notches indicating the information of the signal such as NTSC system or PAL system, and the disc information is distinguished by providing a concave portion and a convex portion at positions symmetrical to the center line (l).

Explaining the whole in detail, as shown in FIG. 4, the outer case 50a of the reproducing apparatus main body 50 is provided with a case insertion opening 51. FIG. 1 shows the basic structure of a recording disk reproducing apparatus. In FIG. 4, 130 is a turntable,
The disc 6 is placed and brought into a reproducing state. 131 is a center boss for centering the disk 6 placed on the turntable 130. Reference numeral 132 is a clamp that presses the disk 6 placed on the turntable 130 against the turntable 130. Four
Reference numeral 0 denotes a chassis, to which guides 52 and 53 for guiding the case 2 into the reproducing apparatus main body 50 are fixed. The guides 52a and 53a are the guide grooves. A case expanding mechanism 60 is fixed on the chassis 40 in the vicinity of the case insertion opening 51. 66
Is an expanding member supported by the fixed base 80 so as to be vertically rotatable, and expands the case 2 by the support member 61 fixed to the fixed base 80. The fixed base 80 is fixed to the chassis 40. The engaging member 62 is rotatably supported by the fixed base 80 by a shaft 74 and a bearing 63, and serves to engage with the hole 13 for engaging the case 2. 90 is a disc holding mechanism. 95
Is an upper clamp arm and is formed integrally with the movable base 91. Reference numeral 96 denotes a lower clamp arm, which is supported by a bearing 97 so as to be vertically rotatable, and holds the disk 6 by both of them. Reference numerals 99 and 100 denote lid locking members, which are horizontally rotatably supported by the pins 105 and 106 with respect to the movable base 91, and engage the notches 19 of the lid 3 to lock the lid 3. 94
Is a leaf spring and is attached to the movable base 91 at a position where it comes into contact with the lid 3. 107 and 108 are claw-shaped release members formed integrally with the movable base 91, and the projections 24 of the lid 3 are inclined.
It serves to disengage the lid 3 and the case 2 by engaging with 26.

Reference numeral 291 denotes an abutment pin that acts as a transmission member that abuts cutouts 290 provided on the left and right sides of the lid 3 to transmit signal information, and is inserted into the pin holder 292 to slide in the X ₁ and X ₂ directions. You are free. One of the springs 293 is fixed to the abutment pin 290 by an E ring 294 so that the abutment pin 291 is returned by the spring 293 when it does not abut the notch 290. The plurality of contact pins 291 play a role of pressing a plurality of detection switches provided on the rearmost side of the player as described later.

Further, as shown in FIGS. 8 and 4, the movable base 91 of the disc holding mechanism 90 is supported by rails 45, 46, 47 so as to be movable in the front-rear direction (bidirectional X ₁ , X ₂ ). The rail 45 has V grooves on both side surfaces as shown in FIG. 4B, and a roller 92 rotatably provided on the movable base 91 is fitted in the V groove of the rail 45. Therefore, the disc holding mechanism 90 is attached to the rails 45, 46,
It does not fall off from 47. The movable base 91 is fixed to the belt 111 by a connecting piece. Belt 111 is gear, 112 and 11
A belt 114 is driven by a motor 114 with a speed reducer, and the disc holding mechanism 90 is moved. Reference numeral 120 denotes an arm housing, and the rail 126 and the shaft 122 allow the turntable 130 to move in the left-right direction (Y ₁ , Y ₂
It is supported so that it can move in both directions. Similarly to the disc holding mechanism 90, the arm housing 120 is also configured to be parallel-transferred on the disc 6 placed on the turntable 130 by a belt (not shown) of the motor 124 to pick up a signal of the disc 6. ing.

180 is a support that supports the disk 6, and the shaft 1
It is supported by 81 and a bearing 182 so as to be vertically rotatable (M ₁ , M ₂ directions). The support 180 is provided separately on the right and left sides as shown in the figure, and in order to hold the groove guard 33 of the disc 6, a range larger than the diameter of the groove guard 33 of the disc 6 in the Y ₁ and Y ₂ directions is provided. It is configured to hold. Further, the support 180 is configured to be in a state of being below the turntable 130 and a state of being able to support the disc 6 held on the turntable 130 and held by the disc holding mechanism 90.

Reference numeral 134 denotes a disk lifting mechanism, which is configured as follows. A lift arm 142 is supported by a shaft 141 and a bearing 138 so as to be vertically rotatable. By rotating the lift arm 142, the lift arm 142
Lift ring 1 supported at the bottom of the lifting ring 135
Placement ring 1 fixed to the lifting ring 135 by raising and lowering 36
By 33, the disc 6 is moved up and down between a state where it is supported above the turntable 130 and a state where it is placed on the turntable 130.

Reference numeral 160 denotes a cam unit, which drives the support 180, the disc elevating mechanism 134, and the case expanding mechanism 60 described above. The cam 161 is horizontally rotatably supported by the shaft 176, and is configured to be rotated by the power of the cam driving motor 165 via the worm 166. Reference numeral 162 denotes a lever, which is supported by a shaft 179 and a bearing 163 so as to be horizontally rotatable, and is urged by a spring 172 in the P ₁ direction. Lever 16
7, 168 are rotatably supported by a shaft 178 and bearings 170, 171, respectively. Each lever 162, 167, 168 is linked to the cam 161 so as to operate according to the cam diagram of the cam 161. Reference numeral 190 is a reversing lever for switching the operation of the disc holding mechanism 90. The reversing lever 190 is a shaft 194
Is rotatably supported horizontally by a spring 192, is biased in the Q direction by a spring 192, and is positioned by a block 191. 140 is a turntable driving motor. 200 ~
205 is a microswitch group, and the microswitch 200
Is a switch for detecting the operation of the case expansion mechanism 60. The micro switch 201 is a switch for detecting the operation of the disc holding mechanism 90. The microswitches 202 to 205 are position detection switches of the disc holding mechanism 90. Reference numeral 295 denotes a plurality of lid detection switches, which are fixed in the left and right two switch cases 296. The lid detection switch 295 is turned on only when the cutout portion 290 of the lid 3 comes into contact with the abutment pin 291 to indirectly detect the information of the lid 3.

Next, the disc gripping mechanism 90 will be described in detail.

FIGS. 8A, 8B, 8C and 8D are explanatory views of the structure and operation of the disc holding mechanism 90. The movable base 91 is provided with contact portions 91a on the left and right that contact the lid 3. Reference numeral 92 denotes four rollers, which are rotatably supported by the movable base 91 and are engaged with the rail 45 as shown in FIG. 4 (B). A roller 93 is rotatably supported on the opposite side of the movable base 91. Reference numeral 94 is a leaf spring, which is attached to a position where it comes into contact with the lid 3. Reference numeral 95 denotes an upper clamp arm, which is integrally formed with the movable base 91 and has a claw 95a. Lower clamp arm 96
Is rotatably supported by a bearing 97, and is biased by a spring 98 in the direction of arrow 98a. Reference numerals 99 and 100 denote lid locking members that engage with the notches 19 in the lid 3 to lock the lid 3. The lid locking members 99 and 100 are supported by pins 105 and 106 so as to be horizontally rotatable with respect to the movable base 91. Further, the lid locking members 99, 100 are provided with driven ends 115, 116 guided by the cam grooves 113, 114 provided in the sliding member 102, respectively. The sliding member 102 has a substantially plate shape, and the cam grooves 113, 1
14 is guided by the pins 105 and 109 and moves substantially linearly in the arrow Y ₁ or Y ₂ direction. A roller 103 is rotatably attached to the sliding member 102 on the left side in the center of the figure, and the protrusion 102b
Is provided, and has a contact portion 102a and a spring hook 110a on the opposite side. The protrusion 102b is a square hole 91b formed in the movable base 91.
The contact member 101b of the rotating member 101 can be brought into contact therewith. Further, the sliding member 102 is always biased in the direction of arrow Y ₂ by the spring 110 that is applied between the spring hook 111 and the spring hook portion 112 of the movable base 91. Further, the sliding member 102 is provided with a wedge-shaped portion 102c.
As shown in FIGS. (A) and (B), the wedge-shaped portion 102c and the contact end 96a of the lower clamp arm 96 can be brought into contact with each other.
The rotating member 101 is supported by the movable base 91 by a fulcrum 101a so as to be horizontally rotatable, and is biased by a spring 104 so as to rotate in the direction of an arrow 104a. In addition to the contact portion 101b as described above, the rotating member 101 is formed with the contact end 101c that can contact the lid 3. The contact portion 101b has an inclined surface shape as shown in the figure.

Reference numerals 107 and 108 denote release members provided at both ends of the movable base 91, which engage with the inclined portions 26 of the protrusions 24 of the lid 3 to cover the lid 3 and the case 2.
Is to be disengaged. A contact plate 109 is provided at a position where it can contact the microswitches 202 to 205. Reference numeral 110 'is a connecting piece for connecting the belt 111 and the disk holding mechanism 90.

The operation of the disc holding mechanism 90 will be described. The disc holding mechanism can take the following three states. The first state is "lid
"Disk holding state". This is the lid 3 as shown in Fig. 10.
Is in a state in which the disk 6 is clamped. In this state, the sliding member 102 is located at the most right position (in the direction of arrow Y ₂ ) in the figure among the three states. Lid stop member 99,1
00 is in a position where the lid 3 is regulated as shown in the figure by the driven ends 115 and 116 being guided by the cam grooves 113 and 114, respectively. The leaf spring 94 is in contact with the lid 3 as shown in the figure, and is in a state of biasing the lid 3 forward (direction of arrow X ₁ ). The rotating member 101 is in contact with the lid 3 at the contact end 101c. The lower clamp arm 96 is in a state of holding the groove guard 33 of the disk 6 as shown in FIG. 8 (A). In this state, the claw 95a of the upper clamp arm 95 and the contact end 96a of the lower clamp arm 96 are in a position where they contact the groove guard 33. Further, as shown in FIG. 9 (B), the abutting end 96a abuts on the wedge-shaped portion 102c, and the urging force of the spring 110 causes the sliding member 102 to move to the right side of the drawing (direction of arrow Y ₁ ).
As a result, the lower clamp arm 96 is urged in the direction of the arrow 98b and holds the groove guard 33.

The second state is the “lid holding state”. This is a state in which the lid 3 is hooked as in FIG. 8 (A) and the disc 6 is not held as in FIG. 8 (B). In this state, the sliding member 102 is in the intermediate position of the three states. The lid locking members 99 and 100, the leaf spring 94, and the rotating member 101 are all in the same state as the “lid / disk holding state”.
Is locked as shown in FIG. 8 (A). However, in this state, since the sliding member 102 has moved from the “lid / disk holding state” to the left side (Y ₁ direction) in the figure, it is no longer in contact with the wedge-shaped portion 102c as shown in FIG. 9 (B). The contact end 96a is not in contact. Therefore, the lower clamp arm 96
By the urging force of 98, it is opened in the direction of arrow 98a as shown in FIG. 8 (B), and the disk 6 is not held.

At this time, as described above, some of the lid detection switches 295 are pressed by the contact pins 291 and are in the ON state,
The recording surface side of the disk 6, the recording method, etc. are detected.

The third state is the "non-holding state". This state is the 8th
As shown in FIG. 8C, the lid 3 is not locked and the disc 6 is not held as shown in FIG. 8D. Sliding member
102 is located at the leftmost position (Y ₁ direction) in the figure among the three states. The lid locking members 99 and 100 are driven ends 11 respectively.
5,116 are in an open state guided by the cam grooves 113,114.
The lower clamp arm 96 is open as in the state shown in FIG. 8 (B), and is in a state in which the disc 6 is not held. The rotating member 101 is at the position as shown in the figure, and the contact portion 101b and the protrusion 102b of the sliding member 102 come into contact with each other, and the sliding member 102 slides to the right side (Y ₂ direction) in the figure by the biasing force of the spring 110. It is regulated not to move.

As described above, the disc holding mechanism 90 can take three states of “lid / disc holding state”, “lid holding state”, and “non-holding state”. In all of these three states, the sliding member 102
It is restricted by the position in the sliding direction (Y ₁ , Y ₂ direction). That is, by changing the position of the sliding member 102 in the Y ₁ and Y ₂ directions, the disc holding mechanism 90 is changed to three states of “lid / disc holding state”, “lid holding state”, and “non-holding state”. be able to. However, among the above three states, the “lid holding state” can be held when the sliding member 102 is regulated by some means against the force of the spring 110.

The case expanding mechanism 60 will be described in detail. 13 (A)-(C), 14 (A)-(C), 15 (A)
(C) is an explanatory view of the structure and operation of the case expansion mechanism 60. Reference numeral 80 is a fixed base of the case expanding mechanism, which is fixed to the chassis 40 of the reproducing apparatus and has the insertion opening 51 as described above.
In the vicinity of. The support member 61 is fixed to the fixed base 80. 62 is an engaging member, which is a bearing fixed to the fixed base 80.
It is supported by 63 and a pin 74 so as to be vertically rotatable. Further, the engaging member 62 is moved by the spring 72 so that the arrow W _{1 in} FIG.
Is biased in the direction of. The expansion member 66 is provided at a position corresponding to the support member 61 as shown in the figure, and is supported by a bearing 67 fixed to a fixed base 80 so as to be vertically rotatable.
An arm 64 and an abutting end 68 are formed on the expanding member 66.
Reference numeral 65 denotes a slider, which is slidably attached to the fixed base 80 as shown in FIG. 13 (C). The slider 65 is provided with elongated holes 65a, 65b, and the pins 70,
71 is engaged and slid linearly in the directions of the arrows Y ₁ and Y ₂ in the figure. The contact portion 63a of the bearing 63 regulates the central portion of the slider 65 as shown in FIG. 13 (C) so that it is slightly bent downward. Further, the slider 65 is provided with two engaging portions 69, and with this configuration, the expanding member 66 is rotated in the direction of arrow V _{2 in} the figure by the slider 65 acting on the right side of the figure (direction of arrow Y ₂ ). By moving and acting on the left side of the figure (direction of arrow Y ₁ ), it rotates in the direction of arrow V ₁ . Further, a spring 73 is applied between the slider 65 and the fixed base 80 as shown in the figure, and always urges the slider 65 to the right side in the figure (direction of arrow Y ₂ ). Further, the slider 65 is provided with an abutting end 76 and a notch 65c. 75 is a case guide,
It serves to guide the case 2 and is fixed to the fixed base 80.

The above is the configuration of the case expanding mechanism 60. Next, how the case expanding mechanism 60 expands the case 2
Will be described so as to be substantially fixed to the reproducing device.
When the case 2 is not inserted into the reproducing device, the case expanding mechanism 60 is in the state shown in FIGS. 13 (A) to 13 (C).

That is, the notch 65 of the slider 65 and the engaging member 62 come into contact with each other, and the slider 65 is regulated in the state shown in the figure against the biasing force of the spring 73. Therefore, the expansion member 66 is shown in FIG.
The position is regulated as shown in (C).
In this state, the case expansion mechanism 60 has the case 2 with the reproducing apparatus main body.
The case guide 75 is inserted through the insertion opening 51 of the guide 50.

FIGS. 15A to 15C show a process in which the case 2 is inserted into the case expanding mechanism 60. Figure 15 (A) shows
13 shows the case expanding mechanism 60 in the same state as in FIGS. 13 (A) to 13 (C). When the case 2 is inserted into the case expanding mechanism 60 in this state by being guided by the case guide 75 in the direction of the arrow X ₂ as shown in the figure, first, the vicinity of the opening of the case 2 contacts the expanding member 66, Case 2 is expanded as shown in FIG. 15 (B). Then, when the case 2 is further inserted, the contact end 62a of the engaging member 62 contacts the opening end of the case 2, and the engaging member 62 rotates in the W ₂ direction in the figure, and FIG. As shown in C), the engaging end 62b of the engaging member 62 engages with the engaging hole 13 of the case 2. In this case, the notch 65c of the slider 65 and the engaging member 62
Is no longer in contact, and the slider 65 slides to the right (Y ₂ direction) as shown in FIG. 14B by the biasing force of the spring 73. In the state of FIG. 14 (B), the expansion member 66 is
The disk 6 is rotated in the V ₂ direction so that the removal of the disk 6 from the case 2 is not obstructed. Fig. 14 (A) ~
The state of the case 2 at this time, that is, the state of the expanded case 2 at this time is shown in FIG. In this state, the engagement member 62 is regulated by the slider 65 so as not to rotate in the W ₁ direction as shown in FIG. 14 (B). next,
For example, if the contact end 76 of the slider 65 is moved to the left side (Y ₁ direction) in the figure by some means, the slider 65 moves in the direction of the arrow Y ₁ , and the notch 65c is engaged as in the state of FIG. Composite material 6
When it comes to the position 2, the engaging member 62 is urged by the urging force of the spring 72.
Rotates in the direction of arrow W ₁ , and the engagement between the engagement hole 13 of the case 2 and the engagement member 62 is released.

As described above, the case expanding mechanism 60 has a means for expanding the case 2 and a means for engaging the case 2, and the engagement with the case 2 can be easily released by moving the slider 65. Is.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above configuration, the case 2 is fixed to the outside of the player.
It can be touched and is easily bent to bend the case 2. As a result, the vertical position of the disk 6 in the case easily changes, and the upper and lower clamp arms 95, 96 of the disk holding mechanism are The center position was out of alignment and it was a mistake to hold it. Further, when the case 2 is strongly bent, the center deviation between the disc 6 and the clamp arms 95 and 96 is further increased, and the disc 6 does not enter the upper and lower clamp arms 95 and 96 and the disc recording surface is clamped to the clamp arm 95. , 96
Also caused scratches, and the groove guard of the disk 6 and the clamp arms 95, 96 hit the disk, and the gripping mechanism did not enter the case any more. Further, in order to solve the above problem, when a gap is provided to the upper and lower clamp arms 95 and 96 by an amount slightly smaller than the expanded amount of the expanded case 2, it is effective for a little case bending, In mass production, it is necessary to manage a delicate gap between the upper and lower sides of the case 2 and the clamp arms 95 and 96, and there is a fatal defect that the case and the clamp arm come into contact with each other and the holding mechanism does not move because they are slightly displaced. Was.

In view of the above problems, the present invention adds a means for easily inserting a disc into the upper and lower clamp arms to the gripping mechanism even if the case is bent by an external force, and the clamp arm and the insertion center of the case are displaced from each other. It is intended to provide a recording disk reproducing device which can perform a stable and smooth gripping operation even when the occurrence of the error occurs.

Means for Solving the Problems In order to solve the above-mentioned problems, the recording disk reproducing apparatus of the present invention is a case engagement for releasing the engagement between the opening and the lid and detachably fixing the case body. Means, latching means for latching the lid, openable and closable holding means for holding the disc, and rotatable guide means for guiding the disc to the holding means.
And a guide member that engages with the guide means to rotate the guide means to guide the guide means to the opening.

Effect of the Invention With the above-described structure, according to the present invention, even if there is a vertical shift between the holding mechanism and the disc that occurs when the case is bent by an external force after the player engages the case, the guide means is expanded inside the case. It has a role of guiding the disc, which comes in contact with and is displaced in the vertical direction, toward the center direction and to the disc holding mechanism.

Embodiment Hereinafter, a recording disk reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a partial perspective view of a case expanding mechanism and a disk holding mechanism of a recording disk reproducing apparatus according to an embodiment of the present invention, and FIG. 2 is a partial sectional view of the disk holding mechanism at a standby position, and FIG. The figure is a partial cross-sectional view at a position immediately before holding the disc. The detailed configurations and operations of the disc holding mechanism and the case expanding mechanism are the same as those in the conventional example, and only the guide means and the guide member of the present invention will be described here.

In the disc holding mechanism 90, the guide member 301 is integrally welded to the guide leaf spring 300, and the guide leaf spring 300 is fixed to the left and right upper clamp arms 95, respectively.
When the 300 rotates, the guide member 301 causes the disc 6 to move.
Is guided by the claw 95a of the upper clamp arm 95. Further, two guide members 302 that should come into contact with the guide member 301 are attached to the fixed base 80 in the case expansion mechanism 60, and the guide member 301 is provided inside the case 2 expanded by the support member 61.
Is shaped so as to enter through the guide member 302.

The operation of the case expanding mechanism and the disc holding mechanism of the recording disk reproducing apparatus configured as described above will be described below with reference to FIGS. 1 to 3. The case 2 is easily deformed by an external force, and the disc 6 in the case is then deformed.
2 moves vertically in the case like 6a or 6b in FIG. 2, the disk outer peripheral portion 33 may pop out to the outside especially from the position of the tip of the claw 95a in the case of 6a.
The recording surface of the disk 6 may be damaged by 95a. Therefore, it is necessary to make the vertical gap between the tip of the claw 95a and the opening 2a of the case 2 extremely small, but if it is made too small, the tip of the claw 95a and the opening 2a will hit each other. You need to open it.

As a result, when the case 2 is bent as described above, the recording surface may be damaged. However, according to the configuration shown in FIGS. 1 to 3, the guide member 301 is not the guide member 302 as shown in FIG. While contacting the inclined portion 302a, the guide plate spring 300 is rotated to contact the inclined surface 2b of the opening 2a and enter the case 2.
At this time, the disc 6 returns to the position near the center where the deformation is released comfortably even in the state of 6a, so the upper clamp arm
The disk 6 is guided to 95. The guide member 301 may be located at any position where it comes into contact with the inclined portion 302a of the guide member 302, and it is not necessary to manage the dimensions as in the case without the guide member. After the disk 6 is collected in the case 2, the guide member 301 returns to its original state by the elastic force of the guide leaf spring 300 as shown in FIG.

As described above, according to the present embodiment, the disc holding mechanism is provided with the guide means 300, 301 to the holding portion of the disc, and the case expanding mechanism is brought into contact with the guide means to guide the guide means into the case 302. By installing the case 2
When the disk is bent by an external force, it is possible to solve a trouble such as a pinching error and a damage to the disk recording surface due to the displacement of the insertion center of the disk 6 at a low cost.

EFFECTS OF THE INVENTION As described above, the recording disk reproducing apparatus of the present invention includes the case engaging means for releasing the engagement between the opening and the lid and detachably fixing the case body, and the latch for locking the lid. Means and
An openable / closable holding means for holding the disc, a rotatable guide means for guiding the disc to the holding means, and a guide means for rotating the guide means by engaging with the guide means to provide the guide means at the opening. By providing a guide member for guiding, when the case is bent by an external force, troubles such as a disc holding error and damage to the recording surface caused by the disc insertion center shifting up and down are eliminated, and the holding portion has a strict dimension. It is possible to perform stable disk holding with a simple configuration without the need for management.

[Brief description of drawings]

FIG. 1 is a partial perspective view of a recording disk reproducing apparatus according to an embodiment of the present invention, FIGS. 2 and 3 are partial sectional views showing the operation thereof, and FIGS. 4 (A) and 4 (B). , (C) are perspective views showing the structure of a conventional recording disk reproducing apparatus, FIG. 5 is a perspective view of a disk case, FIGS. 6A and 6B are plan views of the disk, front views and FIG. 7 are disk cases. Fig. 8 (A), (B), (C), and (D) is an exploded perspective view of the inside, and Fig. 8 is a plan view and a side view showing the disc holding mechanism for holding and not holding the lid, respectively. Front view, FIG. 10, FIG. 11, and FIG. 12 are plan views for explaining the operation of the player, respectively, and FIG. 13 (A), (B), (C), FIG. 14 (A), ( B),
(C) is a plan view, a side view and a front view of the case expanding mechanism, and FIGS. 15 (A), (B) and (C) are side sectional views showing the operation thereof. 2 ... Case, 6 ... Disc, 95, 96 ... Clamp arm, 300 ... Guide leaf spring, 301 ... Guide member, 302 ... Guide member.

Claims (1)

[Claims] 1. A recording disk reproducing apparatus using a disk case having a disk case body having an opening at one end for accommodating a disk for recording a signal, and a lid removably engaged with the opening. There is a case engaging means for releasing the engagement between the opening and the lid and detachably fixing the case body, a latching means for latching the lid, and a disk. An openable / closable holding means, a rotatable guide means for guiding the disc to the sandwiching means, and the guide means being rotated by engaging with the guide means to rotate the guide means into the opening. A recording disk reproducing device having a guide member for guiding.