JPH0325318Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a disk playback device that plays a disk by loading a disk housed in a disk cartridge case into the main body of the device. The present invention relates to a disk cartridge case misinsertion prevention device that prevents the case from being inserted into the device main body in an incorrect posture when inserting the case into the device main body.

[Conventional technology]

Examples of disk playback devices include devices that play disks by loading the disks stored in a disk cartridge case into the main body of the device, such as the floppy disk playback devices used in various office automation devices. be. By the way, conventional disk playback devices of this type are usually configured so that the case can be inserted into the device body even if the case is not in the correct position when loading the case into the device body. .

[Problem that the invention attempts to solve]

In a disk playback device such as the one mentioned above, in which the disk cartridge case can be inserted into the device body in an incorrect position, it is impossible to play the disk if the case is inserted into the device body in this way. In addition, incorrect insertion of the case may cause damage to the case and the main body of the device.

The problem of this invention is how to realize a disk cartridge case misinsertion prevention device that prevents the above-mentioned inconveniences.

[Means for solving problems]

In this invention, grooves are formed on both sides of the disk cartridge case that extend in the insertion direction when inserting the case into the main body of the device. ,
A rack gear is formed deep from a position a predetermined distance from the end of the insertion groove, and when the case is properly half-inserted into the device body, it starts to mesh with the starting end of the rack gear in the groove. A pinion gear for driving the case is formed at a position such that the disc cartridge case holder has a part that supports the side surface of the case opposite to the pinion gear side and is inserted further than the pinion gear when viewed from the insertion direction of the case. A position near the end allows the case to be inserted into the normal position when the case is inserted into the holder and positioned within the groove, and allows the case to be in the normal position when it comes into contact with a part other than the groove. A convex stopper for preventing erroneous insertion is formed to prevent insertion into the holder.

The portions of the case other than the groove that come into contact with the stopper for preventing incorrect insertion are, for example, the end surface of the case on the non-insertion side with respect to the main body of the device, the rack gear, and the like.

〔Example〕

Hereinafter, an embodiment in which this invention is applied to a compact disc player will be described with reference to FIGS. 1 to 7.

The compact disk player (disc playback device) described here consists of a disk cartridge case A shown in FIGS. 4 and 5 and a device body B shown in FIGS. 1 to 3. The device is constructed such that the disk is stored in the case A, and the disk is loaded into the device body B along with the case A to play the disk.

First, the configuration of case A will be explained with reference to FIGS. 4 and 5. As shown in the figures, case A is a plate-like body that has a rectangular shape in plan view as a whole and has a constant thickness. be. This case A is
Frame 2 having a disk placement part (not shown)
0, a case lid 21 attached to this frame 20 so as to cover the upper surface side of the disk placement part,
It consists of a bottom plate 22 fixed to the frame 20 so as to cover the lower surface side of the disk placement part, and by opening and closing the case lid 21 with respect to the frame 20, the disk 2 is fixed to the disk placement part.
It is configured so that 3 can be taken in and taken out. In the center of the case lid 21, there is a disk stabilizer that cooperates with a turntable provided in the device body B to hold the disk 23 when the case A is loaded into the device body B with the disk 23 stored therein. 24 is attached. On the bottom plate 22,
A turntable insertion hole 25 and a pick up head insertion hole 26 are formed. On both side surfaces 27a and 27b of the frame 20 (both sides of case A), there is a section from the front end surface (end surface on the insertion side into the device main body B) 28 to the rear end surface (end surface on the non-insertion side into the device main body B) near the device body. Guide grooves 30a and 30b are formed to extend in the insertion direction when inserting into B, and a loading rack gear 31 is located on the bottom of the guide groove 30a from a position a predetermined distance from the insertion side groove end. It is formed.

Next, the configuration of the device main body B will be explained with reference to FIGS. 1 to 3. In FIGS. 1 and 2, reference numeral 40 denotes a chassis, and a disk drive motor 41 is attached to the center of the lower surface of the chassis 40, and a feed loading motor 42 is attached to one end of the chassis 40. . A rotating shaft of the disk drive motor 40 projects upward from the upper surface of the chassis 40, and a turntable 43 is connected to the upper end of the rotating shaft. Further, a disk cartridge case holder 44 is supported on the upper side of the chassis 40, and an optical pickup head 45 is supported on the lower side.

The holder 44 is supported to be vertically movable with respect to the chassis 40, and the figure shows the holder 44 in the upper limit position. Support walls 46, 46 are formed on both left and right sides of the front end of the holder 44, a frame 47 is fixed between the upper ends of the support walls 46, 46, and a space between the frame 47 and the holder 44 is This serves as a disk cartridge case insertion slot 48. Furthermore, guide walls 49a and 49b are formed on both left and right sides of the upper surface of the holder 44 to guide the case A in the directions of arrows P ₁ and P ₂ . The guide walls 49a and 49b are a vertical wall 50 that restricts the lateral movement of the case A, and a horizontal wall that is connected to the upper end of the vertical wall 50 that restricts the upward movement of the case A. 51. Among these guide wall parts, guide wall part 49
The inner surface of the vertical wall portion 50 of a is a portion that supports the side surface of the case A opposite to the side of the loading pinion gear 53, which will be described later, and has an insertion end closer to the loading pinion gear 53 described above when viewed from the insertion direction of the case A. A convex erroneous insertion prevention stopper 52 for preventing erroneous insertion of case A is formed at a position close to . Further, in this holder 44, a loading pinion gear 53 for driving the case A is located at a position where the starting end of the rack gear 31 starts to engage within the guide groove 30a when the case A is half-inserted into the main body B of the device. It is formed.

In the above configuration, the holder 44 holds the case A containing the disc 23 during disc playback, and moves from the upper limit position (disc non-playback position) to the lower limit position (disk playable position) to play the disc 23. It is placed on a turntable 43. Also, loading pinion gear 53
is engaged with the rack gear 31 of case A during loading and unloading of case A to move case A in the directions of arrows P ₁ and P ₂ .
The optical pickup head 45 moves in the direction of arrow _P1 during disk reproduction to read signals recorded on the disk. These holders 4
4. The loading pinion gear 53 and the optical pickup head 45 are selectively driven by the feed loading motor 42.

In order to play the disk 23 with the above-mentioned disk playback device, insert the case A containing the disk 23 into the holder 4 through the insertion opening 48 of the main body B of the device.
4, and mesh the tip of the rack gear 31 of case A with the loading pinion gear 53. In this case, case A should be placed in the insertion opening 4 with the case lid 21 facing upward and the front end surface 28 facing the direction of arrow _P1 .
Insert halfway into 8. When case A is partially inserted as described above, the feed loading motor 42 starts and the loading pinion gear 53 rotates.
This gear 53 moves the case A in the direction of arrow _P1 , and automatically pulls the entire case A into the holder 44 at a fixed position. When the disk 23 in the case A approaches the top of the turntable 43, the holder 4
4 descends and reaches the lower limit position, and along with this, the turntable 43 enters the case A through the turntable insertion hole 25, the disk 23 is placed on the turntable 43, and the turntable 4
A disk 23 is held between the disk stabilizer 24 and the disk stabilizer 24. When the loading of case A is completed in this way, the loading pinion gear 53 stops rotating.

If a command to play the disc is given to the device body B, the disc drive motor 40 rotates, the turntable 43 rotates, and the disc 23 rotates together with the disc stabilizer 24.
The pickup head 45 moves in the direction of arrow _P1 and reads the signals recorded on the disk 23 through the pickup head insertion hole 26, thereby playing back the disk 23.

This disc playback device is capable of holding the case A in the holder 44 only when the case A is in the normal position when performing the playback operation of the disk 23 as described above.
The case A cannot be inserted into the holder 44 if the case A is not in its normal position.

In this regard, the operation of the disc playback device will be explained below. first. As described above, when the case A is in its normal position, that is, when the case lid 21
When inserted into the insertion port 48 with the front end face 28 facing upward and the front end face 28 facing the insertion direction, the case A is placed on the holder 44 with the guide walls 49a, 49b
It moves in the direction of arrow _P1 , with its lateral movement being restricted by the vertical walls 50, 50, and its upward movement being restricted by the horizontal walls 51, 51. At this time, the stopper 52 for preventing incorrect insertion is located within the guide groove 30b of the case A, as shown in FIG.
Allow case A to move in the direction of arrow _P1 . Therefore, when the case A is inserted in this manner, the case A can be moved to the normal position (the position where the disk 23 reaches above the turntable 43) without any hindrance. Next, if the operator of case A accidentally inserts case A into the insertion slot 48 with the rear end surface 29 of case A facing in the direction of arrow _P1 , case A will be When guided by the guide walls 49a and 49b, the stopper 52 for preventing erroneous insertion comes into contact with the end of the rear end surface 29 of the case A. Therefore,
In this case, case A cannot be inserted any further in the direction of arrow _P1 . As long as the rear end surface 29 is directed in the direction of arrow _P1 , the case lid 21,
This is the same regardless of which side of the bottom plate 22 is on top. Furthermore, when the person operating the case A inserts the case A into the insertion opening 48 with the front end surface 28 facing the arrow _P1 direction and the bottom plate 22 facing upward, as shown in FIG. Case A has a fixed size guide wall portion 49
a, 49b, the stopper 52 for preventing incorrect insertion comes into contact with the leading tooth of the rack gear 31 formed in the guide groove 30a of the case A, and in this case as well, the case A is no longer moved in the direction of the arrow _P1 . cannot be inserted.

As described above, in this disc playback device, if the case A is not in the normal position, the case A cannot be inserted into the fixed position within the holder 44. In other words, even if the case A is inserted irregularly into the device body B (front and back, rotated, combined), half-insertion is basically allowed, so the user may insert the case A without visually checking it. Even when the user tries to insert the insertion hole and fails to insert it, there is little risk that the user will have an illusion that he or she has misjudged the position of the insertion hole itself, and it is possible to reliably prevent multiple mistakes such as repeating the same attempt again. In addition, if half-insertion is possible but the insertion is incorrect, the stopper 52 for preventing incorrect insertion should function before it comes into contact with the loading pinion gear 53 for automatic insertion.
Because the relative positions of the loading pinion gear 53 and the stopper 52 for preventing incorrect insertion are set on the device, the drive system may start spinning unnecessarily during incorrect insertion, or the drive system may fail in case A despite the incorrect insertion.
It is possible to prevent troubles such as forcibly pulling in equipment and damaging equipment. Therefore, in this device, case A is placed in the holder 4 in the wrong position.
It can prevent it from being inserted into the deep part of 2.
Damage to case A and device body B due to incorrect insertion can be prevented.

[Effect of idea]

In this invention, grooves are formed on both sides of the disk cartridge case that extend in the insertion direction when inserting the case into the main body of the device. ,
A rack gear is formed deep from a position a predetermined distance from the end of the insertion groove, and when the case is properly half-inserted into the device body, it starts to mesh with the starting end of the rack gear in the groove. A pinion gear for driving the case is formed at a position such that the disc cartridge case holder has a part that supports the side surface of the case opposite to the pinion gear side and is inserted further than the pinion gear when viewed from the insertion direction of the case. A position near the end allows the case to be inserted into the normal position when the case is inserted into the holder and positioned within the groove, and allows the case to be in the normal position when it comes into contact with a part other than the groove. Since the convex stopper is formed to prevent incorrect insertion, it is possible to prevent the case from being incorrectly inserted into the correct position within the device body. Damage can be prevented. In other words, even if the above-mentioned case is inserted irregularly into the main body of the device (front and back, rotated, combined), half-insertion is basically allowed, so the user may try to insert the case without visually checking it. Even if the user is unable to do so, there is little risk of the user having the illusion that he or she has misjudged the position of the insertion hole itself, and it is possible to reliably prevent multiple mistakes such as repeating the same attempt again.
In addition, if half-insertion is possible but the insertion is incorrect, the relative position of the loading pinion gear and the stopper for preventing incorrect insertion on the device should be adjusted so that the stopper for preventing incorrect insertion will function before it comes into contact with the loading pinion gear for automatic insertion. This setting prevents troubles such as the drive system starting to spin unnecessarily when inserted incorrectly, or the drive system forcibly pulling in the case despite incorrect insertion and damaging the equipment. can.

[Brief explanation of drawings]

The drawings are diagrams for explaining one embodiment of this invention, in which FIG. 1 is a plan view of the main body of the device, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a side view of FIG.
4 is a perspective view of the disk cartridge case with the front surface facing up, FIG. 5 is a perspective view of the same case with the back side facing up, and FIGS. 6 and 7 are both views of the disk cartridge case. FIG. 3 is an explanatory diagram showing the effect of the case misinsertion prevention device. A...Disk cartridge case, B...Equipment main body, 23...Disk, 29...Non-insertion side end face (rear end face), 30a, 30b...Groove (guide groove), 31...Rack gear, 43... ... Turntable, 44 ... Disk cartridge case holder, 52 ... Stopper for preventing incorrect insertion, 53 ... Loading pinion gear.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A disc cartridge case that is a plate-shaped body having a predetermined thickness and that stores a disc, and a disc cartridge case that moves the disc between a playable position and a non-playable position with respect to a turntable. The device consists of a device main body having a disk cartridge case holder that is supported in such a manner that the disk cartridge case holder holds a disk therein, and by half-inserting the disk cartridge case containing the disk into the holder together with the case, the entire case is automatically inserted into the holder. In a disc playback device that plays the disc by pulling the holder into its normal position and then moving the holder from the disc non-playback position to the playable position, the case has two sides on both sides of the device. Grooves extending in the insertion direction when inserting into the slot are respectively formed, and a rack gear is formed in one of these grooves from a position a predetermined distance from the insertion side groove end, A pinion gear for driving the case is formed in the device main body at a position where the case starts to engage with the starting end of the rack gear in the groove when the case is properly half-inserted into the device main body, and the pinion gear for driving the case starts to engage with the starting end of the rack gear in the groove. is a part that supports the side surface of the case opposite to the pinion gear side and is located closer to the insertion end than the pinion gear when viewed from the insertion direction of the case, and is inserted into the groove when the case is inserted into the holder. A convex stopper for preventing incorrect insertion is formed, which allows the case to be inserted into the normal position when the case is in the correct position, and prevents the case from being inserted into the normal position when it comes into contact with a portion other than the groove. A device for preventing incorrect insertion of a disk cartridge case. (2) The device for preventing incorrect insertion of a disk cartridge case according to claim 1, wherein the portion other than the groove is an end surface of the case on the non-insertion side with respect to the device body. (3) Utility model registration claim 1, characterized in that the portion other than the groove is the rack gear.
A device for preventing incorrect insertion of a disk cartridge case as described in Section 1.