JPH0461061A - Loading device - Google Patents

Abstract

PURPOSE:To reduce the drive power required at the time of manual operation by providing an emergency lever which moves manually, and a clutch mechanism which cuts off the speed reduction gear train of a motor for driving by the operation of the emergency lever. CONSTITUTION:The emergency eject which is executed manually during an emergency such as a power failure, etc., is executed in a loading state, and the upper end of the emergency lever 181 is pressed to the back and turned. And, the lower end of the lever 181 is lowered, and a bent part 181a comes between a side plate 150 and a bush 169, pushes and moves a gear 166 to the large gearwheel side with the bush 169, and releases the mesh with a gear 167. Then, the connection of a driving gear 134 which is meshed with a cam rack 130 and a driving motor 161 is cut off. Thus, the performance required for the motor at the time of manual unloading can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a loading device provided in an information recording/reproducing apparatus for loading an information recording medium such as an optical disk or a magneto-optical disk.

[Prior Art] FIG. 6 shows an exploded perspective view of a conventional loading device.
A holder mechanism section consisting of a cartridge holder 1o that supports a flat disk cartridge (not shown) and members such as a shutter opening/closing mechanism is provided in the center, and a clamp base 20 is stacked on top of the cartridge holder 1o. A clamper mechanism section consisting of a clamper 21 and the like is located above, and cam racks 30 for regulating and moving the positions of these two mechanism sections are arranged on both left and right sides thereof. Furthermore, the left and right side plates 50 fixed by the front and rear side plates 41 and 42 movably support the two mechanism sections and the cam rack 30, and the drive mechanism section 60 drives the cam rack 3o using the drive motor 61 as power, thereby operating the device. is configured to do so. Furthermore, an emergency mechanism section is provided inside the side plate 50.

Inside the rear of the left and right side plates of the cartridge holder lO,
A holder stopper 11 is attached so as to be rotatable in the vertical direction, and engages with a pin 51 on the side plate 5o to prevent the cartridge holder 1o from moving rearward, but when a disc cartridge is inserted to this position, the holder stops. Stopper 11
is biased by the upper surface of the disk cartridge so that it rotates upward and disengages. A total of four bins 14 are projected horizontally, one each from the front and back of the outer surface of the left and right side plates of the cartridge holder 10, and are fitted into guide grooves 30b on the inner side of the cam rack 30, respectively, and are inserted into the left and right side plates of the cartridge holder IO. A stepped roller 1 rotatably fitted into a not-illustrated bin on an upwardly protruding portion at the front and rear ends of the
5 is fitted into the L stop 50a of the side plate 50.

The clamper mechanism includes a clamper 21 mounted on a flat clamp base 20 via a leaf spring 22, a bias magnet 23 directly fixed, and a slider fixed vertically on both left and right sides of the clamp base 20. 24, and another slider 2 movably attached to this slider 24.
Supported through 5. The bottle 26 that protrudes horizontally from the slider 24 is inserted into the vertically long hole 25 of the slider 25.
a, and the clamp base 20 is fitted with the slider 25.
It can be slightly displaced up and down. Slider 2
The overhang provided on the upper side of the slider 4 and the overhang of the slider 25 are coupled by a spring 27. The bottle 52 on the side plate 50 is fitted into the long hole 25b provided at the bottom of the slider 25, and the bottle 26 protruding from the slider 24 passes through the long hole 25a and is also fitted into the long hole 50b on the side plate 50. These are fitted together and allow the clamp base 20 to move only in the vertical direction. Furthermore, a bin 28 provided on the slider 25
is fitted into the guide groove 30c of the cam rack 30 to regulate the vertical position of the slider 25.

The cam rack 30 in contact with the inside of the side @ 50 is movable only in the front-back direction by fitting the bin 31 on its outer surface into the horizontal long hole 50c of the side plate 50. A rack gear is provided at the lower end of the cam rack 30 and meshes with a large gear of a drive gear 53 provided on the side plate 50 and having a large gear and a small gear. The guide groove 30b on the inner surface of the cam rack 30 connects the cartridge holder 1 via the bin 14.
The guide groove 30c supports the clamp base 20 via the bin 28, slider 25, bin 26, and slider 24, and regulates its position.

Further, as shown in FIG. 7, a rack gear is also provided at the upper end of the cam rack 30, and meshes with a large gear 71a of a two-stage spur gear 71 of an emergency mechanism section provided inside the side plate 50. The emergency mechanism unit includes a two-stage spur gear 71 attached to a pin 55 fixed to the inside of the upper part of the side plate 50, and a rack that is movable only in the front-back direction by a pin 56 inside the side plate 50 and has a rack gear at the lower end. As shown in FIG. 7fa), the end surface of the rack plate 72 is located in front of the small hole 43a on the front panel 43 at the front of the apparatus. The large gear 71a of the two-stage spur gear 71 meshes with the rack gear at the upper end of the cam rack 30, and the small gear 71b meshes with the rack plate 72 from below, so the movement of the rack plate 72 accelerates in the opposite direction of the cam rack 30. The movement is now converted to

The drive mechanism section 60 consists of a drive motor 61 and a gear train for deceleration connected to the drive motor 61. The final stage of the gear train for deceleration meshes with the idler gear 54 on the left and right side plates 50.
4 meshes with the small gear of the drive gear 53, so that the power of the drive motor 61 drives the left and right cam racks 30 at the same speed and in the same direction.

Next, the operation of this conventional example will be explained. When inserting a disc cartridge containing a disc, which is an information recording medium, from the front of the device, the holder stopper 11 engages with the bin 51, preventing the cartridge holder 10 from moving backwards. When the holder stopper 11 is rotated upward by the disk cartridge and removed from the bin 51, the drive mechanism section 60 is activated by a detection mechanism (not shown) at the same time, and the cam rack 30 begins to move rearward. By retracting the cam rack 30, the disk cartridge is fixed to the cartridge holder 10 by a mechanism (not shown).

Furthermore, when the cam rack 30 retreats, the bin 14 is urged by the guide groove 30b, and the cartridge holder 10 retreats together with the cam rack 30. When the stepped roller 15 reaches the bent part of the L7 hole 50a of the side plate 50, the cartridge holder 10 moves downward and stops. Cartridge holder 1
0, the bin 28 provided on the slider 25 comes into contact with the slope of the guide groove 30c of the cam rack 30, and the slider 25 starts to descend, and the clamp base 20 also descends together. A little after the cartridge holder 10 finishes descending, the clamp base 20 also finishes descending and stops while being urged downward by the tension of the spring 27, and the drive mechanism section 60 also stops.

The ejecting operation is performed by driving the cam rack 30 in the opposite direction, and is the opposite operation to the above-mentioned loading operation. In the eject operation performed manually in an emergency such as a power outage, in the loading state shown in Fig. 7(a),
As shown in FIG. 7(b), a rod-shaped object S such as a clip is inserted through the small hole 43a on the front panel 43,
When the rack plate 72 is pushed backward, the two-stage spur gear 71 meshing with the rack plate 72 rotates, and the large gear 71a rotates.
The cam rack 30, which is engaged from below with the rack plate 72, moves forward in the opposite direction to the rack plate 72. An eject operation is performed by advancing the cam rack 30, and the disk cartridge can be manually pulled out. At this time, the object S
Even if you pull it out, it remains in the ejected state.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional example, all drive loads must be operated during manual ejection;
It has the drawbacks of requiring a large amount of force and poor operability.

It is an object of the invention to provide a loading device which eliminates the above-mentioned disadvantages and which reduces the driving force required during manual operation.

[Means for Solving the Problems] In order to achieve the above-mentioned object, in the loading device according to the present invention, the loading and unloading operations of the information recording medium are carried out electrically. - and a clutch mechanism that disconnects the reduction gear train of the drive motor by operation of the emergency lever. Reduce driving force.

[Example] The present invention will be described in detail based on the example illustrated in FIGS. 1 to 5.

FIG. 1 shows an exploded perspective view of the loading device, in which a clamper 121 and a bias magnet 1 are located at the center of a flat cartridge holder 110 that supports a disk cartridge.
23, a holder mechanism section is provided to which a disc cartridge shutter opening/closing member, etc. is attached, and the clamper 12
1 is attached via a clamp lever 122, and the bias magnet 123 is attached via a lever 124. A guide groove 110a is provided in the left and right ends of the rear upper surface of the cartridge holder 110 in the front-rear direction, into which a slider 112 is fitted and is movable back and forth.The slider 112 is moved by a spring 113 whose one end is fixed to the cartridge holder 110. Forced forward.

As shown in FIG. 2, when the left slider 112 is viewed from above, the rear side of the disk cartridge C is attached to the slider 112.
When the slider 112 comes into contact with the stopper 112a, a convex portion 112b formed of a curved surface provided on the inside of the slider 112 engages with a concave portion cb on the side surface of the disk cartridge C. The convex portion 112c having a curved surface facing outward is located inside the tapered hole 110c of the side plate 110b of the cartridge holder 110 when the slider 112 is in the initial position.
c is designed to release the convex portion 112c of the slider 112, so when the slider 112 moves back together with the disk cartridge C while the convex portion 112b is engaged with the concave portion cb of the disk cartridge C, the engagement of the convex portion 112b is released. It is designed so that it will not come off. In addition, the slider 112
has a bottle 112d on the outside, and this bottle 112d is inserted into the long hole 110g on the side plate 110b of the cartridge holder 110.
The guide groove 130a of the cam rack 130 located on the outside is fitted through the guide groove 130a. The cam rack 130 is arranged to support and drive the cartridge holder 110, and the cam rack 130 is movably attached to the inside of the left and right side plates 150 supported by the front and rear side plates 141 and 142 in the front and back direction, and is mounted on the lower front side. It is configured to be driven by a certain drive mechanism section 160.

A circular through hole 1 is provided near the center of the cartridge holder 110.
10d, on which is disposed a clamper 121 which is held by a clamp lever 122 and has a presser flange 121a at its lower part. Clamp lever 122
is rotatably supported in the vertical direction by a fulcrum 122a fixed to the left side of the through hole 110d, and the clamper 121 is supported at the right end.
, and the left end is the fitting hole 150a on the left side plate 150.
It is inserted into and its position is regulated. A rectangular through hole ILOe is provided at the rear of the through hole 110d, and a lever 124 is supported to be rotatable in the vertical direction by supporting points 124a provided on both left and right sides of the rear portion of the hole ILOe.
4b is located above the through hole 110e, and the bias magnet 12
3 is held rotatably within the vertical plane in which the lever 124 rotates. The rear end 124c of the lever 124 is a fulcrum 124a
The front end of a leaf spring 125 is attached to the upper side between the rear end 124c and the fulcrum 124a, and a shaft 151 whose both ends are fixed to the left and right side plates 150 is connected to the lever 12.
4 and the rear part of the leaf spring 125.

Two bottles 114 are protruded from the outer surface of the side plate 110b of the cartridge holder 110, and each bottle is attached to the cam rack 1.
It is fitted into a guide groove 130b on the inner surface of 30,
A vertical guide groove 110f in the center of the side plate 110b
A pin 152 is fitted on the inner surface of side 1150.

Note that the cartridge holder 110 is urged upward by a spring (not shown), and the cartridge holder 110
The bottle 152 on the side plate 150 is located at the lower end of the guide groove 110f.
The state where is located is considered to be the initial position.

Furthermore, two bins 153 protruding from the inner surface of the side plate 150 are fitted into two guide grooves 130c provided on the outer surface of the cam rack 130, so that the cam rack 130 is movable only in the front and rear horizontal directions. ing. cam rack 130
A guide groove L provided on the inner surface of the
30b connects the cartridge holder 11 via the bin 114.
The guide groove 130a controls the longitudinal position of the slider 112 via the pin 112d. In addition, a rack gear 130d is provided at the upper end of the cam rack 130, and meshes with a synchro gear 132 rotatably mounted on the side plate 150, and the left and right synchro gears 132 are connected by a synchro shaft 133. The cam racks 130 of the two are arranged to move at the same speed and in the same direction. In addition, the right cam rack 130 is provided with a rack gear 130e at the lower end.
It meshes with a drive gear 134 installed only on the right side plate 150.

As shown in FIG.
61. The final gear 168 of the reduction gear train, which is composed of reduction gears 162 to 168, bushes 169, shafts 171 to 173 supporting these, and the like, and which is connected to the drive motor 161, meshes with the drive gear 134. .

Figure 3 shows the emergency lever, which will be described later, being pushed in.
This shows the state where the gear is disconnected, and the drive motor 1
A gear 162 directly connected to the gear 61 is the first gear 163 of a reduction gear train consisting of gears 163 to 168, which are two-stage spur gears.
It is meshed with a large gear. Gear 16 in the third stage of the gear train
Only the small gear No. 5 has a width more than twice that of the other gears, and the fourth stage gear 166 that meshes with this gear and the bush 169 adjacent to the small gear of gear 166 are connected to the shaft 171 on the shaft 171. The spring 1 is supported slidably in a parallel direction.
74 urges the large gear of the gear 166 toward the bush 169. The fifth stage gear 167 is supported by a shaft 172 common to the gear 165, is located on the small gear side of the gear 165, and normally meshes with the gear 166, but the gear 167
When 66 moves toward the large gear, the mesh is disengaged.

Also, in Figure 1, there is an emergency lever on the front right.
181 is provided, and an emergency mechanism section is configured inside the right side plate 150, which is activated by manually moving this lever 181 and drives the cam rack 130 by a spring force. The emergency mechanism section includes an L-shaped lever 181 that is centrally supported by a fulcrum near the lower front end of the right side plate 150 and is rotatable in a vertical plane;
1 and the right side synchro gear 132.
It is composed of etc. The bin 154 on the right side plate 150 is fitted into a horizontal elongated hole 182a provided in the center of the rack plate 182, and the rack plate 182 is movable only in the horizontal direction back and forth.

As shown in FIG. 4, the immersion rack plate 182 is a rack gear with a toothless part that meshes with the synchro gear 132 when it is located at the rear of the initial position, and the second mesh is released when it is located further back. 182b is provided at the lower end. Further, a spring 15 is provided at the rear of the rear end of the rack plate 182.
5 is fixed to the side plate 150, and when the rack plate 182 is retracted and the synchro gear 132 is engaged with the toothless portion, it comes into contact with the rack plate 182 and urges the rack plate 182 forward. The lower end of the lever 181 is located behind the fulcrum, and as shown in FIG.
81a is provided, and this bent portion 181a is located slightly above between the folding plate 150 and the bushing 169 in the initial position, and when the emergency lever 181 rotates, the fourth
As shown in FIG. 5(b) and FIG. 5 fb), it is inserted between the side plate 150 and the bushing 1.69. As shown in FIG. 4, the upper end of the lever 181 has a surface parallel to the front panel 143 in the initial position, and is located behind the small hole 143a on the front panel 143 and in front of the rack plate 182. There is.

Next, to explain the operation of the apparatus, when a disk cartridge containing a disk serving as an information recording medium is inserted to a predetermined position, the rear side of the disk cartridge C will hit the stopper of the slider 112 as shown in FIG. 2(a). 112
a, and the convex portion 112b engages with the concave portion cb on the side surface. Further, the drive motor 161 of the drive mechanism section 160 is started, and the cam rack 130 is driven rearward via the drive gear 134 and the rack gear 130e meshing with the drive gear 134.
The slider 112 retreats via the pin 112d urged by the upper end of the guide groove 130a, and at the same time, the disk cartridge C is urged and drawn in via the convex portion 112b. At this time, due to the movement of the slider 112, as shown in FIG.
As shown in FIG. 2, the convex portion 112c comes into contact with the side plate 110b, and the disk cartridge C will not come off the slider 112.

The horizontal movement of the cartridge holder 110, that is, the disk cartridge, is completed when the disk in the disk cartridge reaches directly above the turntable (not shown), but the cam rack 130 continues to move backward, and the cam rack 1
The bottle 114 is urged by the inclined portion of the guide groove 130b of No. 30, and the cartridge holder 110 descends against the urging force of the spring. At this time, the position of the left end of the clamp lever 122 is regulated by the fitting hole 150a on the side plate 150, so when the fulcrum 122a descends, the right end holding the clamper 121 moves to the cartridge holder 1.
10, the clamper 121 passes through the through hole 110d, and clamps the disc in the disc cartridge onto a turntable (not shown). Also, lever 12
4, the fulcrum 124a descends in the same way, so the leaf spring 125
The rear end is urged upward by the shaft 151, the front end 124b descends, and the bias magnet 123 approaches the disk to a predetermined distance. In this position,
The drive mechanism section 160 is stopped by an output from a detection mechanism (not shown), and loading of the disk cartridge is completed.

The electric ejection operation of the disk cartridge C is performed by driving the cam rack 130 in the opposite direction, and is an operation opposite to the above-described loading operation.

Immersion ejection, which is performed manually in the event of an emergency such as a power outage, is performed in the loading state, and a rod-shaped object S as shown in FIG. When the upper end of the emergency lever 181 is urged backward and rotated, the lower end of the lever 181 descends and the bent portion 181a is inserted between the side plate 150 and the bushing 169, and the bushing 1
The gear 166 is biased and moved toward the large gear via the gear 69,
From FIG. 5 (al to (b)), the gear 167 is disengaged as shown in FIG.
61 is disconnected.

Furthermore, when the emergency lever 181 is energized, the emergency rack plate 182 is pressed and the rack plate 182 moves backward, and the rack gear 182b rotates in mesh with the synchro gear 132. Cam rack 130 moves forward. As shown in FIG. 4 fb), when the cam rack 130 moves forward slightly, the bin 114 reaches the inclined part of the guide groove 130b, and the cam rack 130 is urged forward via the bin 114 by the urging force of the spring 113 and moves. After that, the cartridge holder 110 rises even if the lever 181 is not biased. During this time, the synchro gear 132 is located at the toothless portion of the rack gear 182b, so the meshing between the two is released, and the rack plate 182b is disengaged.
2 is urged forward by a spring 155 and is in contact with the synchro gear 132 without meshing with it and does not move.

When the bin 114 on the side of the cartridge holder 110 reaches the horizontal part of the guide groove 130b of the cam rack 130, the cartridge holder 110 stops rising and stops at the initial position, and the bin 112d reaches the upper end of the guide groove 130a, so that the spring is released. The slider 112 receiving the biasing force of 113 moves the cam rack 130 forward via the bin 112d, and at the same time moves the disk cartridge C via the stopper 112a.
is also energized and moves forward to the initial position shown in FIG.
81 to return to the initial position, and as shown in Fig. 5 (al.
Since the bent portion 181a comes out upward as shown in FIG. 2, the gear 166 slides toward the small gear due to the biasing force of the spring 174, and the meshing with the gear 167 is restored.

When this emergent operation is completed, the disk cartridge has been pulled out forward from the front panel 143, so it can be pulled out by hand.

Also, the emergency rack plate 182 is located at the rear of the initial position as shown in FIG. During loading, the rack gear 182b meshes with the synchro gear 132, and the rack plate 182 advances to the initial position shown in FIG. 4(a), then disengages and stops.

[Effects of the Invention] As explained above, the loading device according to the present invention has 1
During manual ejection, the reduction gear train of the drive motor is disconnected, which reduces the required operating force and improves operability.At the same time, the reduction ratio of the reduction gear is increased, reducing the performance required of the motor. can do.

[Brief explanation of drawings]

1 to 4 show an embodiment of the loading device according to the present invention, FIG. 1 is an exploded perspective view of the loading device, FIG. 2 fa) [b) is a configuration diagram of the slider, and FIG. Configuration diagram of the drive mechanism section, Fig. 4 fa) fb) is an explanatory diagram of the operation of the emergency mechanism section, Fig. 1 fa)
(bl is a block diagram of the clutch mechanism of the emergency mechanism section, FIG. 6 and subsequent figures show a conventional loading device, FIG. 6 is an exploded perspective view, and FIG. 7 is an explanatory diagram of the emergency mechanism section. 110 is a cartridge holder, 112 is a slider,
121 is a clamper, 130 is a cam rack, 0 is a drive mechanism, 1 is an imager lever, and 82 is an imager rack plate.

Claims (1)

[Claims] 1. A loading device that electrically loads and unloads an information recording medium, and includes a manually operated emergency lever and a clutch mechanism that disconnects a reduction gear train of a drive motor by operating the emergency lever. A loading device characterized by: