JPH02208863A - Mechanism for preventing erroneous insertion of cartridge - Google Patents

Abstract

PURPOSE:To prevent erroneous insertion from being performed with a simple mechanism by providing an abutting member to block the start of a loading operation by being abutted on an abutting lug at the time of locating a chucking means at a non-chucking position. CONSTITUTION:The abutting members 29a and 29b to block the start of the loading operation by being abutted on the abutting lugs 157a and 157b of the chucking means 153a and 153b at the time of locating the chucking means 153a and 153b at the non-chucking position are provided. Therefore, a disk cartridge 1 inserted with up-side-down posture cannot progress to recessed parts 15a and 15b for chucking by abutting holding lugs 157a and 157b provided on chucking links 153a and 153b with the abutting parts 29a and 29b provided on a cartridge main body 5 even when the cartridge is pressed and inserted further from an insertion position to a loading start position, and no disk 7 is chucked. In such a manner, device constitution can be simplified, and also, the erroneous insertion can be blocked.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides a cartridge error prevention system that prevents a cartridge containing an information recording medium such as an optical disk or a magnetic tape from being inserted into a recording/reproducing apparatus in an incorrect orientation. This invention relates to an insertion prevention mechanism.

[Prior Art] In computers, word processors, audio equipment, visual equipment, etc., optical discs, magnetic discs, magnetic tapes, etc., as recording and playback media for recording and recording are often used while being housed in cartridges. , these devices are provided with a loading device for loading the recording medium and the cartridge into the recording/reproducing position in the recording/reproducing device.

This loading device generally holds a cartridge inserted a certain depth from an opening by a cartridge holding member,
The cartridge holding member is further introduced into the recording/reproducing position and locked, and when the cartridge is removed, this lock is released, the cartridge holding member is returned to the insertion position, and the cartridge is removed from that position.

Also, for cartridges inserted through this opening,
In the loading device, there is often an incorrect posture or position to restrict the insertion posture of the cartridge at the recording/playback position in the recording/playback device.
An incorrect insertion prevention mechanism is provided and is configured to prevent insertion of the cartridge in positions other than the limited insertion positions.

[Problems to be Solved by the Invention] However, the conventional cartridge misinsertion mechanism is generally provided as an independent mechanism within the loading device in many cases, which makes the configuration of the device complicated. It has the disadvantage that it tends to lead to increased costs or decreased reliability. In addition, it is necessary to provide a detection part or a part to be blocked to detect insertion due to incorrect orientation of the cartridge and to prevent the cartridge from being taken into the recording/reproducing apparatus, which only complicates the cartridge configuration. However, it also has the disadvantage of being undesirable in terms of design.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mechanism for preventing erroneous cartridge insertion, which eliminates the drawbacks of the conventional example and uses a relatively simple mechanism to prevent chucking and prevent the start of loading operation when the cartridge is inserted in an overturned position. It is about providing.

[Means for Solving the Problems] In order to achieve the above object, in the cartridge erroneous insertion prevention mechanism according to the present invention, a chucking recess and an abutment are provided on the side of the cartridge that accommodates the recording medium. Additionally, the cartridge loading device includes a holding claw that chucks the chucking recess when the cartridge is taken in, and a non-chucking claw that does not fit into the chucking recess when the cartridge is inserted in an overturned position. a chucking means having an abutting claw and an abutting claw that abuts the abutting portion provided on the cartridge in the king position, and the abutting claw when the chucking means is located in the non-chucking position; The device is characterized in that it includes an abutting member that abuts the claw and prevents the start of the loading operation.

[Operation] The cartridge misinsertion prevention mechanism having the above-mentioned configuration prevents the cartridge from being inserted in an overturned position.

It abuts against the abutting portion of the chucking means and prevents the holding claw from fitting into the chucking recess.

Furthermore, since the abutting claw abuts the abutting member at this position, the start of the loading operation is inhibited.

[Example] The present invention will be explained in detail based on illustrated embodiments.

1 to 3 show a disk cartridge 1 used in this embodiment, including a tray 3 and a cartridge body 5.
It consists of a disk 7 and is housed inside. In FIG. 1, a disk 7 has a center hole 9 at its center for being clamped and rotationally driven during recording and reproduction. The tray 3 is chucked by a disc mounting part 11 for mounting the disc 7, locking claws 13a and 13b provided on both sides via elastic parts, and a chucking means provided in the recording/reproducing apparatus. chucking recesses 15a and 15b for chucking, positioning holes 17a and 17b for positioning within the recording and reproducing apparatus, and a turntable and head for rotationally driving the disk 7 and writing and reading data during recording and reproducing. It has a driving write/read hole 19 that enters, and a write protector holding portion 23 that movably holds a write protector 21 as a detected member for preventing erroneous erasure in erasable and non-erasable positions. Further, the cartridge main body 5 has a tray storage part 25 that stores the tray 3, and engaging parts 27a and 27b that engage with the locking claws 13a and 13b to hold the tray 3 in the storage position of the tray storage part 25. Furthermore, abutting portions 29a and 29b are provided which abut against the holding claws within the recording/reproducing apparatus.

FIG. 2 is a plan view of the disc cartridge 1 with the tray 3 stored therein, and the tray 3 with the disc 7 placed thereon is stored in the tray storage portion 25 of the cartridge body 5. As shown in FIG. FIG. 3 is a plan view of the tray 3 pulled out to a predetermined position from the tray storage section 25, and the tray 3 on which the disc 7 is placed during recording and playback is completely exposed when the cartridge body 5 or the disc 7 is placed on the tray 3. The disc 7 is further clamped on the turntable, and the disc mounting section 11 is also lifted upward and driven to rotate.

FIG. 4 is a plan view with the upper half of the disk cartridge loading device removed, and numeral 31 is the device main body, to which two wooden guide shafts 33 are fixed in the horizontal direction.
Optical heads 35, which are movably guided in the radial direction of the disk 7 by a guide shaft 33, are arranged on both sides or linearly driven by a near motor 37.

Further, a turntable 41 that is rotationally driven by a spindle motor 39 is provided. On top of the main body 31 of the apparatus, there are provided trays 3 for positioning the tray 3 in the X direction (horizontal direction in FIG. 4), Y direction (vertical direction in FIG. 4), and Z direction (direction perpendicular to the plane of FIG. 4). 2 wooden tray positioning shafts 43. A tray support plate 45° for positioning the tray 3 in the Z direction and two body support shafts 47 for positioning the cartridge body 5 in the Z direction are provided.

Further, a detection switch 49 for preventing erroneous erasure is provided at a position corresponding to the write protector 21 provided on the tray 3, and a detection switch 51 for detecting cartridge loading is provided at an adjacent position.

FIG. 5 is a front view of the apparatus with the front panel 53 removed. The front panel 53 is provided with an opening 55 through which the disk cartridge 1 is inserted and removed, and an eject button 57. There are fixed guide plates 5 on both the left and right sides of the device main body 31.
9a, 59b are attached, and the fixed guide plates 59a, 5
Driving plates 61a, 61b are arranged on the outside of 9b, interlocking plates 63a, 63b are arranged on the inside, and a hold plate 65, a tray holder 67, a tray holder 67,
Cartridge holders 69 are sequentially arranged. The power motor 71 is a motor for driving the loading device, and is fixed within the device main body 31, and a motor pinion 73 is attached to its output shaft.

Further, FIG. 6 is a right side view of the loading device at the recording/reproducing position. As shown in the right side view of FIG. 6, the output of the power motor 71 is reduced by a gear 79 and a gear 81 which are rotatably supported by support shafts 75 and 77, and further by both ends of a connecting shaft 83 facing the X direction. The rotational force is distributed to the left and right by a pair of left and right gears 85a85b provided in the
b.

The fixed guide plates 59a and 59b have horizontal guide holes 91a.
, 91b and vertical guide holes 93a, 93 continuous thereto.
b, guide shafts 95a, 95b, vertical guide hole 97
a and 97b are formed. Further, drive plates 61a, 6
Horizontal guide holes 99a, 99b are formed in 1b, and by engagement with guide shafts 95a, 95b, drive plates 61a,
Reference numeral 61b denotes drive racks 101a and 101b which are horizontally movable with respect to the apparatus main body 3 and 1 and mesh with drive binions 89a and 89b, and guide shafts 103a provided on interlocking plates 63a and 63b.

Cam grooves 105a and 105b are formed which engage with the interlocking plates 63a and 103b and guide the interlocking plates 63a and 63b in the horizontal and vertical directions. 1. The drive plate 61a includes a loading completion switch 107 and an ejection completion detection switch 109.
A pressing portion 111 is provided for actuating.

FIG. 7 is a right side view with the fixed guide plate omitted at the insertion position, that is, the loading start position. As shown in FIG. 7, the interlocking plates 83a, 63b have guide shafts 113a, 11
3b, supporting shafts 117a and 117b for pivotally supporting the rolling pinions 115a and 115b are provided, and the guide hole 11
9a and 119b are provided. In the cartridge holder 69, guide shafts 121a provided on both left and right sides,
121b is the guide hole 9 of the fixed guide plates 59a, 59b.
7a and 97b and are engaged with each other, the guide shafts 113a and 11 provided on the interlocking plates 63a and 63b are movable in the vertical direction with respect to the device main body 31.
3b and guide holes 123a, 123b that movably guide the interlocking plates 83a, 63b in the horizontal direction, and transfer pinions 115a, 1 that are pivotally supported by the interlocking plates 63a, 63b.
Transfer racks 125a, 125b are provided which mesh with 15b. Guide shafts 127a and 127b protruding from both left and right side surfaces of the tray holder 67 are connected to interlocking plates 63a and 83.
By being inserted into and engaged with the guide holes 119a and 119bb of b, the tray holder 67 connects to the interlocking plates 63a and 63b.
Driven racks 129a, 1 are guided so as to be movable in the horizontal direction, and mesh with transfer pinions 115a, 115b rotatably supported by interlocking plates 63a, 63b.
29b is formed.

In FIG. 8, a support shaft 1 is provided on the upper surface of the fixed guide plate 59a.
The switch link 133 is rotatably supported by the switch link 31 and urged to rotate clockwise by the spring 135. A fixed guide plate 59 is attached to the switch link 133.
A pressing portion 137 that operates a loading start detection switch 136 attached to the holding plate 65 and a cam 141 that engages with a retaining stud 139 provided on the holding plate 65 are formed. A guide hole 143 is formed in the hold plate 65,
Furthermore, it engages with the guide shaft 145 of the lower tray holder 67,
The tray holder 67 is supported by springs 147a and 147b and urged downwardly against the tray holder 67. Hold plate 6
Abutment studs 149a and 149b are provided on the lower surface of the disk cartridge 5 to abut against the tip of the disk cartridge 1 during insertion. Further, support shafts 151 are provided at both left and right ends of the hold plate 65.
Chuck links 153a, 153b by a, 151b
are rotatably supported, and springs 155a and 155b bias the chuck link 153a counterclockwise and the chuck link 153b clockwise. In addition, holding claws 157a and 157b are provided on the chuck links 153a and 153b so as to protrude upward and downward, and the upwardly protruding portions of these holding claws 157a and 157b are connected to tapered cam portions provided on the fixed guide plates 59a and 59b. 159a, "159b, regulation cam part 161a, 1
61b and abutting portions 163a and 163b, and the downwardly protruding portions fit into the chucking recesses 85a and 85b when the disk cartridge 1 is inserted. The tray holder 67 also includes an engaging cam 1 that engages with engaging studs 167a and 167b of release links 165a and 165b, which will be described later.
69a and 169b are formed. Tray holder 67
A leaf spring 175a having pressing portions 171a and 173a and a leaf spring 175b having pressing portions 171b and 173b are fixed to the upper surface of the cartridge holder 69 located below by fixed shafts 177a and 177b, respectively. Furthermore, a clamper 179 is supported with predetermined clearances in the X, Y, and Z directions.

On the cartridge holder 69, there are support shafts 181a, 181.
Release links 165a and 165b are rotatably supported by spring 183a.

183b causes the release link 165a to move clockwise,
Release link 165b is biased to rotate counterclockwise. In addition, release links 165a, 16
5b includes engagement cams 169a and 16 of the tray holder 67.
Engagement studs 167a, 167b that engage with the cartridge 9b, and locking and releasing air 185a, 185b that release the engagement between the cartridge main body 5 and the tray 3 are provided.

In the above mechanism, first, the opening 55 of the front panel 53 is opened.
As shown in FIG. 2, a tray 3 on which a disk 7 is placed is housed in a cartridge main body 5 of the disk cartridge 1 inserted from the cartridge.

At the insertion position of the cartridge main body 5 shown by the two-dot chain line in FIG. From this state, as shown in FIG. 9, the spring 147a.

When the disk cartridge 1 is further pressed and inserted into the interior against the urging force of the disk cartridge 147b, the holding plate 65 is held together with the disk cartridge 1 by the abutment between the distal end surface of the disk cartridge 1 and the contact studs 149a and 149b. Move in the back direction, that is, in the upward direction in FIG.

However, during this movement, the chuck link 153a
The holding claws 157&, 157b provided on , 153b,
The fixed guide plate 5 is fixed by the biasing force of the springs 155a and 155b.
Taber cam portions 159a, 15 formed in 9a, 59b
9b, the chuck links 153a and 153b rotate in the direction in which the left and right holding claws 157a and 157b approach each other, and the holding claws 157a and 157b fit into the chucking recesses 15a and 15b of the disk cartridge 1, respectively. At this point, the disk cartridge 1 is attached to the abutment stud 1.
49a, 149b and holding claws 157a, 157b, and the degree of freedom in the Y direction is restricted. However, in the X direction and the Z direction, the disk cartridge l is guided and its position is regulated by a guide section (not shown) provided in the cartridge holder 69.

Next, during the movement, at a position moved to the back from the above-mentioned chucked position, the holding plate 65
Due to the engagement between the engagement stud 139 and the cam 141, the switch link 133, which was held in a position in which the loading start detection switch 136 is not activated in the insertion position shown in FIG. and cam 141
By disengaging from the press section 137, the pressing section 137 rotates to a position where the loading start detection switch 136 is actuated, as shown in FIG. 9, and is held at that position.

Here, when the loading start detection switch 136 is activated, the motor binion 73 is rotationally driven in the direction in which the disk cartridge 1 is loaded. A power motor 71 is decelerated from a motor binion 73 through a deceleration mechanism and distributed by integral left and right gears 85a and 85b via a connecting shaft 83.
The output of is transmitted to the drive binions 89a, 89b, and the drive binions 89a, 89b are connected to the drive racks 101a, 10
The drive plates 81a and 61b are moved toward the back of the apparatus main body 31 via the drive plates 1b.

The driving plates 61a and 61b are driven by a predetermined stroke from the front panel 53 side of the apparatus main body 31 toward the back of the apparatus main body 31 so as to change from the state shown in FIG. 10 to the state shown in FIG. The drive plate 61a, s i b cam t! 1105a, 105b and the guide shafts 103a, 103b provided on the interlocking plates 63a, 63b,
The driving plates 61a and 61b fix the interlocking plates 83a and 63b through the guide plates 59a and 59b (7) and the horizontal guide hole 91a so that the state shown in FIG. 7 changes to the state shown in FIG.

91b by a predetermined stroke, and then moved down by a predetermined stroke along the vertical guide holes 93a, 93b.

In addition, the interlocking plates 63a and 63b are horizontally movable overculms, and the transfer pinion 115a, which is pivotally supported by the interlocking plates 63&, 63b,
115b rolls on the rolling racks 125a and 125b while the driven rack 129 provided on the tray holder 67
By driving the interlocking plates 63a and 63a, 129b,
The tray holder 67 is driven in the same direction by a movement amount twice as much as the horizontal movement amount of 3b. Further, the tray holder 67 which has completed horizontal movement by a predetermined amount of movement is moved to the cartry, the tray holder 69
, along with the interlocking plates 63a and 63b, move vertically by a predetermined stroke, that is, descend.

In this way, the tray holder 67, which moves horizontally with a predetermined stroke, transports the holding plate 65 from the loading start position shown in FIG. 9 to the position directly above the apparatus main body 31 shown in FIG. 12. Thus, the chuck links 153a, 153b (7) holding claws 157a, which chuck the chucking recesses 15a, 15b of the disk cartridge 1,
157b is also conveyed from the position shown in FIG. 9 to the position shown in FIG. 12.

Therefore, as described above, as the mechanical part having the chucking means moves horizontally, the disk cartridge l
also moves towards the back from the loading start position. Release links 165a and 165b provided in the cartridge holder 69 as an IF release means for releasing the engagement between the cartridge main body 5 and the tray 3 release the moving disk cartridge l at a predetermined position where it is completely taken into the apparatus main body 31. At the same time, only the cartridge body 5 is held in that position. When the disk cartridge 1 is inserted, the release links 165a, 165b17) the engagement studs 167a,
167b and a cam 61a provided on the tray holder 67
, 61b, the release links 165a, 1
The engagement release claws 185a and 185b of 85b are held in a position where they do not interfere with the disk cartridge 1, but as the engagement studs 167a and 167b are disengaged from the cams 81a and 61b in the release holding position, , the left and right unlocking winds 185a and 185b are rotated in the direction of approaching each other due to the urging force of the springs 183a and 183b,
The lock release winds 185a and 185b are connected to the locking portions 27a and 27b of the cartridge body 5 and the locking claws 13a and 13 of the tray 3.
b, and the cartridge body 5 is held in that position. In other words, the disk cartridge l taken into the apparatus main body 31 leaves the cartridge main body 5 at a predetermined unlocked holding position, and only the tray 3 on which the disk 7 is placed moves toward the back of the apparatus main body 31. Tray 3 will be pulled out to the position shown in Figure 3.

On the other hand, when the horizontal movement is completed, the interlocking plates 63a, 63b,
The cartridge holder 69, the tray holder 67, and the holding plate 65 are integrally moved vertically or lowered with a predetermined stroke, and the held disc cartridge 1 is also lowered toward the recording/reproducing position. In the process of the disk cartridge 1 descending with a predetermined stroke, the disk 7 comes into contact with the turntable 41, so that the disk mounting section 1
1 , is positioned in the center hole 9 , and is further clamped around the center hole 9 by a clamper 179 that descends from above and held on the turntable 41 .

Further, the position of the tray 3 is regulated in the X, Y, and Z directions by the positioning shaft 43, and the position of the tray 3 is regulated by the tray support plate 45 and the cartridge body 5 is regulated in the Z direction by the cartridge body support shaft 47. . Also,
The tray 3 and the cartridge main body 5 are pressed together by pressing portions 171a, 171b, 173a, 173b of leaf springs 175a, 175b fixed to the cartridge holder 69 and a pressing mechanism (not shown).

It is held at the recording/playback position. During recording and reproduction, the disk 7 is rotated together with the turntable 41 by a spindle motor 39, and data is written and read by the drive 35 into the light entering from the drive write/read hole 19 of the tray 3.

In such a disc cartridge loading device, incorrect insertion and incorrect orientation of the disc cartridge 1 are prevented in the following manner. For example, if the disc cartridge 1 is inserted in an overturned position, it is further moved from the insertion position toward the loading start position. Even if the chuck link 153a is pressed and inserted
, 153b abut against the abutting portions 29a, 29b of the cartridge main body 5, so that the disc 7 cannot enter into the chuffing recesses 15a, 15b, and the disk 7 cannot be chucked. Even if the holding claw 157a is not inserted or is pressed and inserted,
157b comes into contact with the contact portions 163a and 163b formed on the fixed guide plates 59a and 59b, so that the loading operation of the disk cartridge 1 is started without being pressed and inserted to the position where the loading start detection switch 13B is activated. It never happens.

Further, even if the disk cartridge 1 is inserted with the front and back reversed, or even if the disk cartridge 1 is inserted with the front and back reversed in an overturned position, the same situation as the previous one will occur and loading will not start. Furthermore, when attempting to insert with the left and right sides, which are longer than the front and rear sides, in front, the opening 55 of the front panel 53 is smaller than the length of the left and right sides, so It cannot even be inserted, so only insertion in one limited normal posture is allowed.

[Effects of the Invention] As explained above, the mechanism for preventing incorrect cartridge insertion according to the present invention uses the chucking means itself for the loading operation as a detection member for detecting insertion in an incorrect orientation of the cartridge, and when the cartridge is inserted in an incorrect orientation. It also serves as a blocking member to prevent the start of the loading operation, simplifying the device configuration, and making it possible to reduce costs and improve reliability. In addition, since it is not necessary to independently provide a detection part or a prevention part for detecting insertion of the cartridge in an incorrect orientation and preventing the cartridge from being taken into the recording/reproducing apparatus, the structure of the cartridge becomes complicated. This has the effect of eliminating undesirable factors in terms of design without having to do so.

[Brief explanation of the drawing]

The drawings show an embodiment of the cartridge section insertion prevention mechanism according to the present invention, in which Fig. 1 is a perspective view of a disk cartridge, Fig. 2 is a plan view of the tray in the stored state, and Fig. 3 shows the tray placed in a predetermined position from the cartridge main body. Figure 4 is a plan view with the upper half of the loading device removed;
The figure is a front view of the loading device with the front panel removed.
The figure is a right side view of the loading device, FIG. 7 is a right side view with the fixed guide plate omitted, FIG. 8 is a plan view of the loading device, and FIGS. 9 to 12 are explanatory views of the operation. Reference numeral 1 denotes a disk cartridge, 15 a chucking recess, 29 an abutting portion, 31 a main body of the disk cartridge loading device, and 33 a guide shaft. 35 is an optical head, 37 is a beam near motor, 39 is a spindle motor, 41 is a turntable, 53 is a front panel,
59 is a fixed guide plate, 61 is a drive plate, 63 is an interlocking plate, 6
5 is a hold plate, 67 is a tray holder, 69 is a cartridge holder, 71 is a power motor, 73 is a motor pinion, 89 is a drive pinion, 115 is a transfer pinion, 13
3 is switch link, 153 is chuck link, 165
is a release link. Patent applicant: Canon Co., Ltd., Figure 2, Figure 3 U) G 9 ■ F

Claims (1)

[Claims] 1. A chucking recess and an abutting part are provided on the side of the cartridge that houses the recording medium, and a holding claw is provided in the cartridge loading device for chucking the chucking recess when the cartridge is taken in; A chuck comprising an abutment claw that abuts against the abutment portion provided on the cartridge in a non-chucking position in which the holding claw does not fit into the chucking recess when the cartridge is inserted in a fallen position, and an abutment claw. A method for preventing incorrect cartridge insertion, comprising: a chucking means; and an abutting member that abuts the abutment pawl to prevent the start of a loading operation when the chucking means is located at the non-chucking position. mechanism.