JPH0732732U - Recording medium insertion device - Google Patents

Abstract

(57) [Abstract] [Purpose] The door member that swingably opens and closes the insertion opening of the compact disc playback device has been downsized, and the door member is being played during playback of the disc already loaded in the playback device. In the closed state, the two discs do not come into contact with each other even if an attempt is made to insert a new disc by mistake. [Structure] Insertion slot 1 of compact disc player 12
A vertically swingable door member 15 is arranged at a substantially central position of 4, and a pair of centering protrusions 40 and 41 to which spring force is applied are arranged on both sides of the door member 15. The door member 15 in the closed state prevents the compact disc 16 from being inserted from the central position. Further, the interval between the both end portions 57 of the door member 15 and the moving both end positions 40a, 41a of the centering protrusions 40, 41 is selected to be short, and the insertion amount of the disc 16 into this interval is made very small.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a recording medium insertion device that can be suitably implemented in a compact disc reproducing device or the like.

[0002]

[Prior art]

 FIG. 8 is a front view of a compact disc reproducing apparatus 1 which has been conventionally used. In this compact disc reproducing apparatus 1, a door member 3 is provided on the front plate 2, and the door member 3 opens and closes an insertion port 4 for inserting and ejecting a compact disc which is a disc-shaped recording medium. can do. FIG. 8 shows the door member 3 with the insertion opening 4 opened.

9 and 10 are cross-sectional views of the vicinity of the door member 3. The door member 3 can be angularly displaced as indicated by an arrow 6 by a pin 5 having an axis extending in the long side direction of the insertion port 4 (the left-right direction in FIG. 8, the direction perpendicular to the paper surface of FIGS. 9 and 10). FIG. 9 shows a state in which the door member 3 is angularly displaced counterclockwise in FIG. 9 and the insertion opening 4 is opened. In this state, the compact disc can be inserted through the insertion port 4 and ejected.

By angularly displacing the door member 3 around the pin 5 in the clockwise direction, the insertion port 4 is closed as shown in FIG. Therefore, in the state shown in FIG. 10, the compact disc mounted in the compact disc reproducing device 2 is reproduced and played. At this time, since the door member 3 closes the insertion port 4, a new compact disc is inserted from the insertion port 4. This prevents damage to the compact disc that has already been inserted and damage to the compact disc that has already been inserted.

[0005]

[Problems to be solved by the device]

 In the prior art shown in FIGS. 8 to 10, the door member 3 extends over the entire length in the long side direction of the rectangular insertion opening 4 as shown in FIG. It is desired to reduce the size of the door member 3 to reduce the cost.

FIG. 11 shows a compact disc reproducing device 7 according to a proposed technique in which the door member 3 is miniaturized. In this configuration, in order to open and close the insertion port 4 of the front plate 2, a pair of door members 8a and 8b are provided near both ends of the opening 4 in the long side direction (left and right direction in FIG. 11). These door members 8a, 8b can be angularly displaced around an axis parallel to the long side direction, as shown in FIGS. 9 and 10 described above. As a result, the technique shown in FIG. 11 has an advantage over the door member 3 shown in FIGS. 8 to 10 in that the door members 8a and 8b can be made smaller and the material can be reduced.

However, in the structure shown in FIG. 11, when the compact disc 9 is already mounted and playing is being performed, the door members 8a and 8b open the insertion opening 4 as shown in a simplified manner in FIG. Even in the closed state, when a new compact disc 10 is partially inserted inward from the gap L10 between the door members 8a and 8b, the compact disc 10 inserted into the compact disc 9 being played back. There is a problem that they come into contact with each other. If the compact discs 9 and 10 come into contact with each other, the compact discs 9 and 10 may be damaged, and the playback device 7 during playback and playback may be damaged.

The object of the present invention is to reduce the amount of material so that the insertion port can be opened and closed with a door member that is as small as possible, and yet, a recording medium that has already been reproduced or recorded and a new external medium. An object of the present invention is to provide a recording medium insertion device that prevents contact with the recording medium.

[0009]

[Means for Solving the Problems]

 According to the present invention, in a recording medium insertion device provided in a reproducing / recording device for inserting or reproducing a disk-shaped recording medium, the shape of the recording medium of the reproducing / recording device as viewed from the front is roughly. The rectangular insertion port is provided with a door member that can swing around a pin parallel to the long side direction of the insertion port, and this door member is formed shorter than the length of the insertion port in the long side direction. The recording medium insertion device is characterized in that it is arranged at a substantially central position in the long side direction of the mouth to open and close the insertion opening.

In addition, according to the present invention, a pair of centering protrusions is provided near the insertion opening on both sides of the door member so as to project in the short side direction of the insertion opening and slidably contact the outer portion of the recording medium. Is given a spring force toward the center of the insertion port in the long side direction, the displacement is limited at both ends in the long side direction, and the distance between both ends of the door member and the both ends of the centering protrusion is the distance. The recording medium insertion device is characterized in that the recording medium partially inserted therein is selected so as not to come into contact with the recording medium already mounted in the reproducing / recording device.

[0011]

[Action]

 According to the present invention, a disk-shaped recording medium such as a compact disk or a magnetic disk is configured to be inserted into the reproducing / recording device through the insertion port for reproduction or recording, and the insertion port has a door. A member is provided, and this door member is swingable around a pin parallel to the long side direction of the insertion opening that is roughly rectangular in shape when viewed from the front, and is approximately at the center of the insertion side in the long side direction. Placed in position.

Therefore, in a state where the recording medium is inserted into the reproducing / recording device by opening the insertion port and the door member is closed to perform the reproducing or recording operation, a new recording medium is inserted. Even if the recording medium is to be inserted into the recording medium, the recording medium comes into contact with the door member, and thus cannot be inserted into the insertion port of the reproducing / recording device. This prevents the recording medium in the playback / recording device from coming into contact with and interfering with the recording medium that was mistakenly inserted from the outside when the door member is closed. It is possible to reliably continue the reproduction or recording of the recording medium in the reproducing / recording device.

Further, since the door member is formed shorter than the length of the insertion port in the long side direction, the door member can be downsized and the material can be reduced.

Further, according to the present invention, a pair of centering protrusions arranged on both sides of the door member are provided in the vicinity of the insertion opening of the reproducing / recording apparatus, and the centering projections have a short insertion opening. The centering projection is extended in the side direction, that is, in the thickness direction of the disk-shaped recording medium, and the centering protrusion applies a spring force toward the center of the insertion port in the long side direction. The recording medium to be inserted into the reproducing / recording apparatus can be accurately positioned by inserting the outer side portion of the recording medium into sliding contact with the pair of centering protrusions. For example, the rotating table in the reproducing / recording apparatus can be positioned. The recording medium can be accurately attached to the cartridge.

The centering protrusion is configured so that its displacement is limited at both end positions in the long side direction. Select a short distance between the ends of the door member with the insertion opening closed and the positions of both ends of the centering protrusion, and place the door member in the closed position with the door member at both ends. Even if a new recording medium from the outside comes into contact with the centering protrusion, the insertion amount of the recording medium from the outside into the insertion slot is small, and as a result, it is already loaded in the playback / recording device. It is possible to prevent the recording medium, which is being mistakenly inserted from the outside, from coming into contact with and interfering with the existing recording medium.

[0016]

【Example】

 FIG. 1 is a front view of a compact disc reproducing device 12 of an embodiment of the present invention, FIG. 2 is a plan view showing a simplified configuration of the compact disc reproducing device 12, and FIG. 3 is a compact disc reproducing device thereof. FIG. 4 is a right side view showing the device 12 in a simplified manner. Referring to these drawings, a door member 15 is arranged in a generally rectangular insertion opening 14 formed on the front surface of the deck chassis 13 of the compact disc reproducing apparatus 12, and the insertion opening 14 can be opened and closed. it can.

1 and 2 show a state in which the door member 15 closes the insertion port 14, and in FIG. 3, a state in which the door member 15 closes the insertion port 14 is shown by a solid line and a broken line 15 The insertion opening 14 is opened in the state indicated by a. The insertion port 14 has a substantially rectangular shape when viewed from the front, has a length L1 in the long side direction (left and right direction in FIG. 1), and has a length in the short side direction (up and down direction in FIG. 3). Has L2. With the insertion opening 14 opened, the compact disc 16 can be inserted and reproduced, or ejected to the outside.

The door member 15 is integrally connected to the support portion 18 of the swinging member 17, and as shown in FIG. 3, the cross section perpendicular to the long side direction is bent into a substantially L shape. . The support portion 18 extends over substantially the entire length of the insertion opening 14 in the long side direction, and the mounting portion 19 is formed by bending upward at both ends in the long side direction. The mounting portion 19 is swingably provided on a side wall 20 of the chassis 13 by a pin 21. The pin 21 has an axis parallel to the long side direction of the insertion port 14. The door member 15 and the swinging member 17 are formed by bending a metal plate, and are plane-symmetrical with respect to the symmetry plane 22 at the center of the insertion port 14 in the long side direction.

An operating pin 23 is fixed to the mounting portion 19 so as to project outward, and the operating pin 23 constitutes a cam of a moving member 24 disposed outside the side wall 20 of the chassis 13. It is fitted in the guide hole 25. A guide elongated hole 26 that is elongated in the left-right direction in FIG. 3 is formed in the moving member 24, and a guide pin 27 fixed to the side wall 20 is fitted therein, whereby the moving member 24 can move in the left-right direction in FIG. Is. A rack 28 is engraved on the moving member 24, and a pinion 29 meshing with the rack 28 is rotationally driven by a motor 30 via a gear train 31, and thus the moving member 24 is driven. In FIG. 3, the moving member 24 is in the state of being moved to the insertion port 14 side, that is, to the left in FIG. 3, and at this time, the operating pin 23 is in the position indicated by the reference numeral 23a in the guide hole 25. Thus, the door member 15 swings as shown by the reference numeral 15a to keep the insertion opening 14 open. When the moving member 24 moves to the right in FIG. 3 and reaches its right end, the operating pin 23 is at the end 32 of the guide hole 25, and at this time the door member 15 is in the upright state and the insertion opening. Close 14

A roller 33 is provided on the mounting portion 19 of the swing member 17 so as to be rotatable over the entire length of the insertion port 14 in the long side direction. When the door member 15 opens the insertion port 14 as shown by the phantom line 15a in FIG. 3, this roller 33 is rotationally driven by the gear train 31 and comes into contact with the lower surface of the compact disc 16 to be inserted, Allows automatic insertion and ejection. A holding member 34 is fixed to the upper portion of the side wall 20 of the chassis 13, and a guide member 35 for slidingly guiding the upper surface of the compact disc 16 for guiding is fixed to the lower portion thereof.

Below the holding member 34, a pair of swing pieces 36 and 37 are swingably attached by pins 38 and 39, respectively, and the swing pieces 36 and 37 are attached to the centering projection 40. , 41 extend downward and are fixed. The centering protrusions 40, 41 project and extend in the short side direction of the insertion port 14 (the vertical direction in FIG. 1, the direction perpendicular to the paper surface of FIG. 2). The centering protrusions 40 and 41 slide on the outer side of the compact disc 16 when the compact disc 16 is inserted and ejected so that the compact disc 16 is accurately placed on the turntable 42 for reproduction. Position and guide. One ends of the springs 43 and 44 are connected to the swinging pieces 36 and 37, and the other ends of the springs 43 and 44 are connected to the holding member 34. Therefore, the swinging pieces 36, 37 are given a spring force so that the centering projections 40, 41 are biased toward the center of the insertion port 14 in the long side direction by the spring force of the springs 43, 44. .

When the angular displacement of each swing piece 36, 37 is limited so that only one of the centering protrusions 40, 41 is displaced outward in the long side direction of the insertion port 14, the long side In order to limit the displacement in the direction so that the centering protrusions 40 and 41 are limited to both end positions 40a 1 and 41a, a swing limiting member 45 is provided below the swinging pieces 36 and 37. The rocking restricting member 45 has a plan long hole 46 near both ends thereof, and the pins 38 and 39 are inserted into the guide long hole 46 to allow the rocking restricting member 45 to extend along the long side of the insertion opening 14. It can be moved in any direction. One end of a spring 77 is connected to the swing limiting member 45, and the other end of the spring 77 is connected to the holding member 34. Thus, the swing limiting member 45 is given a spring force upward in FIG. .

The rocking limiting member 45 is formed with through holes 47, 48 having a substantially triangular shape, and the through holes 47, 48 have projections 49 protruding from the rocking pieces 36, 37. , 50 fit in each. The projection 49 abuts on the inner peripheral surface 52 of the through hole 47, thereby restricting the angular displacement of the swing piece 36 in the counterclockwise direction in FIG. By making contact with the peripheral surface 53, the angular displacement of the swinging piece 37 in the clockwise direction in FIG. 2 of the axis of the pin 39 is restricted, and thus the positions of the centering protrusions 40, 41 near the center are restricted, and the natural state is maintained. Then, the state is as shown in FIG.

When the compact disc 16 is inserted into the insertion opening 14 with the door member 15 swinging as shown by the reference numeral 15a in FIG. 3 and the insertion opening 14 is opened, as shown in FIG. The outer portion of the disk 16 contacts the outer peripheral surface of the centering protrusions 40 and 41, and therefore the swinging pieces 36 and 37 are angularly displaced around the pins 38 and 39 so that the centering protrusions 40 and 41 are separated from each other. At this time, the protrusions 49 and 50 do not come into contact with the inner peripheral surfaces of the through holes 47 and 48, or come into contact with them lightly, while the rocking piece 36 rotates clockwise around the axis of the pin 38 and the rocking piece 37. Is angularly displaced in the counterclockwise direction around the axis of the pin 39, and the compact disc 16 is smoothly inserted into the reproducing device 12 while the compact disc 16 is centered by the spring force of the springs 43 and 44. be able to.

In this way, when the door member 15 is angularly displaced as shown by the reference numeral 15a in FIG. 3 and the insertion opening 14 is opened, when the compact disk 16 is further inserted, the compact disk 16 becomes a roller. 33 is guided by the guide member 33 and the guide member 35, is inserted into the reproducing apparatus 12 of the present invention, is mounted on the turntable 42 and is rotationally driven, and the recorded content is reproduced by the optical pickup element 56 which moves in the radial direction 55. Read. When the compact disc 16 is inserted into the playback device 12 and mounted on the turntable 42, the door member 15 keeps the insertion opening 14 closed. Since the door member 15 is located at the center position in the long side direction of the insertion opening 14, even if a new compact disc 16 is to be inserted, the compact disc 16 from the outside comes into contact with the door member 15, and therefore the turntable 42 is brought into contact with the turntable 42. It does not contact the installed compact disc 16a having the maximum permissible dimensions.

In particular, as shown in FIG. 5A, the compact disc 16 from the outside comes into contact with the end 57 of the door member 15 and one of the centering protrusions 41 on the outer side of the compact disc 16, and as a result, When the oscillating piece 37 is angularly displaced counterclockwise around the axis of the pin 39 in the state of reference numeral 37a in FIG. 2 and FIG. 5 (1), the protrusion 50 contacts the inner peripheral surface 58 of the through hole 48. In contact with each other, the moving member 45 moves downward in FIG. 2 and FIG. 5A against the spring force of the spring 77. At this time, the protrusion 49 of the other swing piece 36 contacts the end 59 of the through hole 47, and therefore the downward displacement of the moving member 45 in FIGS. 2 and 5 (1) is restricted. Therefore, the swinging piece 37 is angularly displaced counterclockwise in FIGS. 2 and 5 (1) around the axis of the pin 39 to a position shown by reference numeral 37a in FIG. 2 and shown in FIG. 5 (1). Therefore, the displacement of the centering protrusion 41 is limited at the end position in the long side direction of the insertion opening 14 shown by reference numeral 41a in FIG. 2 and shown in FIG. 5 (1). The centering protrusion 41 at this end position is also indicated by reference numeral 41a in FIG.

Similarly, when the door member 15 closes the insertion port 14, as shown in FIG. 5B, the end portion 61 of the door member 15 and the centering protrusion 40 are attached to the outer portion of the compact disc 16. 2 and FIG. 5 (2), the swinging piece 36 is angularly displaced around the axis of the pin 38 in a clockwise direction, and the projection 49 abuts on the inner peripheral surface 62 of the through hole 47 and moves. The member 45 moves downward in FIG. 2 and FIG. 5 (2) against the spring force of the spring 77, and at this time, the protrusion 50 abuts the inner peripheral surface 63 of the through hole 48, whereby the swing member 36 Is limited to the positions shown in the reference numeral 36a of FIG. 2 and FIG. 5 (2). At this time, the centering protrusion 40 is at the end position indicated by reference numeral 40a, and this state is also shown in FIG.

In this way, with the door member 15 in the state where the insertion port 14 is closed, the compact disc 16 is in contact with the end portions 57 and 61 of the door member 15 and the centering protrusion 41 at the end position 41a. Although the insertion amount L3 shown in FIG. 2 is inserted into the insertion opening 14, the new compact disc 16 does not come into contact with the already-installed compact disc 16a and interfere with each other, and the distance L4 ( (See Fig. 2). Therefore, the compact disc 16 which is being mistakenly inserted from the outside does not come into contact with the compact disc 16a being reproduced, the compact discs 16 and 16a are not damaged, and the reproducing operation of the compact disc 16a is accurately continued. . This also applies to the door member 15 and the centering protrusion 40. The compact disc 16 is shown in FIGS. 2 and 5 in the minimum permissible size, so that the insertion amount L3 indicates the maximum amount possible with the insertion opening 14 by the door 15 closed.

Although the door member 15 is integrally formed of the metal plate together with the swing member 17 in the above-described embodiment, as another embodiment of the present invention, as shown in FIG. An annular protective band 71 may be attached to the portion to prevent damage to the compact disc 16. The protective band 71 may be made of a synthetic resin material having elasticity, for example, rubber or Teflon (trade name), and may not be elastic. By making the top 72 of the door member 15 lower than the top 73 of the protective band 71 as shown in FIG. 7, the top 72 of the door member 15 does not come into contact with the lower surface of the compact disc 16 when it is inserted, This prevents the compact disc 16 from being scratched.

The present invention can be implemented not only for compact discs but also for magnetic discs and the like, and can be implemented not only for reproducing devices but also for recording devices. The present proposal can also be implemented in connection with a device that selectively reproduces and records.

[0031]

[Effect of device]

 As described above, according to the present invention, the door member shorter than the length in the long side direction is provided at the substantially central position in the long side direction of the insertion port of the reproducing / recording apparatus. In order to prevent the insertion of a new recording medium, the door member for that purpose can be downsized, the material can be reduced, and the recording medium already installed in the reproducing / recording device and externally. It is possible to prevent contact and interference with new recording media of the above, prevent damage of those recording media, and ensure that reproduction / recording can be reliably and continuously performed. It is possible to prevent the occurrence of the failure of the.

Further, according to the present invention, in order to accurately position the recording medium to be inserted into the reproducing / recording device from the insertion port, a spring force is applied to the insertion port toward the center in the long side direction. A centering protrusion is provided, and by selecting a short distance between the centering protrusion whose displacement is limited at both ends of the centering protrusion in the long side direction and both ends of the door member in the state where the insertion opening is closed, Even if you accidentally try to insert a new recording medium from the outside into the space between both ends of the door member that closes the insertion slot and both ends of the centering protrusion, the insertion amount can be suppressed slightly. As a result, it is possible to more reliably prevent the contact between the recording medium already inserted in the reproducing / recording device and the recording medium that is erroneously inserted from the outside.

[Brief description of drawings]

FIG. 1 is a front view of a compact disc reproducing device 12 according to an embodiment of the present invention.

2 is a simplified plan view of the compact disc reproducing device 12. FIG.

FIG. 3 is a simplified right side view of the compact disc reproducing device 12.

FIG. 4 is a simplified plan view for explaining an operation related to the centering protrusions 40 and 41 when the door member 15 swings to open the insertion opening 14 and the compact disc 16 is inserted.

FIG. 5 is a simplified plan view showing a state where insertion of a new compact disc 16 is blocked from the outside when the door member 15 closes the insertion opening 14;

FIG. 6 is a plan view of a door member 15 according to another embodiment of the present invention.

7 is a section line VII-VI of the embodiment shown in FIG.
It is the sectional view seen from I.

FIG. 8 is a front view of a prior art compact disc reproducing device 1.

9 is a sectional view in an open state showing a structure near a door member 3 of the prior art shown in FIG.

FIG. 10 is a cross-sectional view showing a structure in the vicinity of the door member 3 in a closed state.

FIG. 11 is a front view of another prior art compact disc reproducing device 7.

12 is a simplified plan view of the compact disc reproducing device 7 shown in FIG.

[Explanation of symbols]

 12 Compact Disc Playback Device 13 Chassis 14 Insertion Port 15 Door Member 16, 16a Compact Disc 17 Swiveling Member 18 Supporting Part 19 Mounting Part 20 Sidewall 21 Pin 24 Moving Member 35 Guide Member 36, 37 Swinging Piece 40, 41 Centering Protrusion 43 , 44, 77 Spring 45 Moving member

Claims (2)

[Scope of utility model registration request] 1. In a recording medium insertion device provided in a reproducing / recording device for inserting or reproducing a disc-shaped recording medium, the shape of the recording medium of the reproducing / recording device when viewed from the front is substantially the same. The rectangular insertion port is provided with a door member capable of swinging around a pin parallel to the long side direction of the insertion port, and the door member is formed shorter than the length of the insertion port in the long side direction. An apparatus for inserting a recording medium, which is arranged at a substantially central position of a long side of the insertion opening to open and close the insertion opening. 2. A pair of centering protrusions are provided near the insertion opening on both sides of the door member so as to project in the direction of the short side of the insertion opening and slide in contact with the outer side portion of the recording medium. A spring force is applied toward the center of the mouth in the long side direction, and the displacement is limited at both ends in the long side direction, and the distance between the both ends of the door member and the both ends of the centering projection is within that gap. The recording medium that has been inserted
An apparatus for inserting a recording medium, characterized in that the value is selected so as not to contact the recording medium already mounted in the reproducing / recording apparatus.