CN1251219C - Disc ejector - Google Patents
Disc ejector Download PDFInfo
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- CN1251219C CN1251219C CN 01120741 CN01120741A CN1251219C CN 1251219 C CN1251219 C CN 1251219C CN 01120741 CN01120741 CN 01120741 CN 01120741 A CN01120741 A CN 01120741A CN 1251219 C CN1251219 C CN 1251219C
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- readout device
- video disc
- gear
- drive motor
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Abstract
The present invention relates to a disc ejector which can extract the disc promptly. The invention is installed with slip fittings in the path between the readout devices driving motor to the readout device. When the extracting action to pause the disc forcibly occurs, the power driven is cut off to protect the parts from damage. The invention is installed with the switching apparatus in the path between the motor to the disc extraction apparatus to extract the disc rapidly.
Description
The present invention is relevant with a kind of disc ejection device that utilizes the readout device CD-ROM drive motor to take out video disc.
In the prior art, utilize the readout device CD-ROM drive motor to take out the disc ejection device of video disc, alternately the above-mentioned readout device CD-ROM drive motor of switch to the 1st power transmission path between the readout device and above-mentioned readout device CD-ROM drive motor to the 2nd power transmission path between the disc ejection device.
In this structure, when carrying out ejection operation, the 1st power transmission path of at first having to connect earlier, make readout device be returned to initial position after, when cutting off the 1st power transmission path, connect the taking-up operation that the 2nd power transmission path is carried out video disc.Therefore,, can not begin immediately to take out action, can't promptly take out video disc even taking out operation.
The present invention arises at the historic moment in order to address the above problem exactly, it is a kind of disc ejection device that utilizes the readout device CD-ROM drive motor to take out video disc, and, therefore can take out video disc rapidly making readout device when initial position resets, just beginning the taking-up action of video disc.
Disc ejection device of the present invention constitutes, in the readout device CD-ROM drive motor input side gear by the readout device drive motor is set to the 1st power transmission path between the readout device, the outgoing side gear that the readout device supporting mass is moved with this input side gear arranged coaxial, and insert the friction plate that between this input side gear and the outgoing side gear revolving force of input side gear is driven to the outgoing side gear, in above-mentioned the 2nd power transmission path, be arranged on that swivel plate indication is separated above-mentioned input side gear by the rotation of swivel plate down or engagement operations opens and closes the change gear of above-mentioned the 2nd power transmission path, have that the above-mentioned readout device supporting mass of butt makes readout device stay in the detent of initial position when above-mentioned readout device resets in initial position, by ejection operation, make above-mentioned readout device when initial position resets starting above-mentioned readout device CD-ROM drive motor, above-mentioned change gear and above-mentioned input side gear are meshed and carry out the taking-up operation of video disc by above-mentioned video disc withdrawing device.Then, when above-mentioned readout device resets after initial position, make to produce between at least one side of above-mentioned friction plate and input side gear and outgoing side gear and slide to keep above-mentioned readout device in initial position.
On above-mentioned the 2nd power transmission path, as be arranged on the powerdriven overload absorption plant of cut-out under the overload effect, take out,, therefore can prevent that locking apparatus sustains damage because the overload absorption plant can absorb the power of readout device CD-ROM drive motor even end video disc by force.
Also be provided with in addition and make above-mentioned opening and closing device remain on the holding device of closure state, the video disc that carries out when above-mentioned video disc withdrawing device takes out action when being in final stage, removes this maintenance, opens opening and closing device.After video disc taking-up action was over, the 2nd power transmission path can be cut off automatically.
More, high voltage can be supplied with the high voltage feedway of readout device CD-ROM drive motor, therefore when ejection operation is carried out, this motor is run up, can take out video disc quickly owing to the carrying out of having installed along with ejection operation.
The present invention's readout device CD-ROM drive motor to the 1st power transmission path between the readout device is provided with carriage, is provided with opening and closing device in the readout device CD-ROM drive motor to the 2nd power transmission path between the video disc withdrawing device.Therefore, when carrying out ejection operation, the starting of readout device CD-ROM drive motor, readout device moves to initial position, and ejection operation is connected opening and closing device, the starting of video disc withdrawing device, the beginning video disc takes out action.When readout device is returned to initial position, when the load on the 1st power transmission path surpassed certain value, carriage began to slide, and cuts off the transmission of power.On the other hand, the video disc withdrawing device continues video disc taking-up action with the power of readout device CD-ROM drive motor.
In above-mentioned the 2nd power transmission path, device has by the load bigger than above-mentioned carriage and cuts off powerdriven overload absorption plant.Therefore, even when ending video disc by force and taking out, the overload absorption plant absorbs the power of readout device CD-ROM drive motor, can prevent that locking apparatus sustains damage.
And holding device can make eject key rest on the position that is pressed into, and makes above-mentioned opening and closing device remain on on-state.Video disc takes out the final stage of action, and the video disc withdrawing device resets eject key, and when video disc took out the action end of a period, opening and closing device was opened, and cuts off the 2nd actuating unit.
Along with the carrying out of ejection operation, the high voltage feedway offers the readout device CD-ROM drive motor with high voltage, so motor runs up, and makes the homing action of readout device and video disc take out to be swift in motion and carries out.
Brief description
The simple planimetric map of Fig. 1 embodiments of the invention 1
The simple sectional view of the part of Fig. 2 embodiment 1
The general view of Fig. 3 embodiment 1 operating state
The general view of Fig. 4 embodiment 1 operating state
The general view of Fig. 5 embodiment 1 operating state
Set up the simple sectional view of overload behind the absorption plant among Fig. 6 embodiment 1
The circuit diagram of the high voltage feedway of setting up among Fig. 7 embodiment 1
The simple planimetric map of Fig. 8 embodiment of the invention 2
The simple sectional view of the part of Fig. 9 embodiment 2
The general view of Figure 10 embodiment 2 operating states
The general view of Figure 11 embodiment 2 operating states
The general view of Figure 12 embodiment 2 operating states
The general view of partial devices in Figure 13 embodiment of the invention 3
The general view of the device part among Figure 14 embodiment 3 in the video disc insertion process
The general view of the device part when video disc inserts among Figure 15 embodiment 3
The simple planimetric map of Figure 16 embodiment 3 major parts
The stereographic map of a part of structure that Figure 17 embodiment 3 sees from bottom to top
The simple planimetric map of a part among Figure 18 embodiment 3
The mnemocircuit pie graph of Figure 19 embodiment 3
The simple planimetric map of Figure 20 embodiment 3 operating states
The simple planimetric map of Figure 21 embodiment 3 operating states
Fig. 1 is to Figure 5 shows that the present invention---the embodiment 1 of disc ejection device.Fig. 1 is the general view that possesses the disc player of disc ejection device, the state behind shown is video disc is placed into the fixed playback position.1 is rotating disk among the figure, and 2 is readout device, and 3 is the readout device supporting mass that supports readout device 2, can carry out reciprocating action, the 4th, and the readout device CD-ROM drive motor.
Above-mentioned rotating disk 1 is by rotating disk CD-ROM drive motor (not identifying among the figure) driven in rotation.Tooth bar 5 is housed on the part of above-mentioned readout device supporting mass, and between detent 6a, 6b, carries out reciprocating action along rectilinear orbit.On the next door of tooth bar 5, pinion wheel 7 and worm gear 8 are provided with coaxially, make tooth bar 5 be engaged in pinion wheel 7.Insert friction plate 9 as shown in Figure 2 between pinion wheel 7 and the worm gear pole device 8.Constitute carriage 10 by pinion wheel 7 and friction plate 9.That is, carriage 10 is installed in readout device CD-ROM drive motor 4 on the power transmission path (the 1st power transmission path) of 2 of readout devices.
13 is cam wheel among the figure.This cam wheel 13 is provided with spiral cam 14 at reverse side.Be supported on the axle of cam wheel 13 middle body of swivel plate 15.One end of swivel plate 15 is provided with change gear 16, and this gear 16 is meshed with cam wheel 13.Change gear 16 and swivel plate 15 have constituted opening and closing device 17.Along with the rotation of swivel plate 15, change gear 16 deviates from mutually with worm gear 8 or is meshed.Readout device CD-ROM drive motor 4 is to also correspondingly open and close of the power transmission path between the video disc withdrawing device (the 2nd power transmission path).
18 is eject keys among the figure, is provided with press section 19 on the part of this eject key, and spring 20 makes rotating to the direction that resets of maintenance usually.The eject key 18 other hooked rod 21 that are provided with.Change this hooked rod 21 and be fulcrum with axle 22, free to rotate.Be formed with dip plane 23 and stopper section 24 in the connection of one end.Dip plane 23 is relative with the extruding teat 19 of eject key 18.The other end at hook-type bar 21 is equipped with sheet spring 25 in addition, and the end of this sheet spring 25 links to each other with the other end of above-mentioned swivel plate 15.And spring 26 makes hook-type bar 21 keep rotating to a direction, by this rotation of detent 27 restriction hook-type bars 21.Hook-type bar 21, spring 26 and detent 27 have constituted holding device 28 jointly.
Among the figure 29, be the sliding panel that constitutes a video disc withdrawing device part.Along with sliding panel 29 moves to the figure top, the video disc withdrawing device takes out the action of the video disc 12 that is in playback position.Owing to video disc withdrawing device itself belongs to known technology, omit in this province not explain.On sliding panel 29, be equipped with the corresponding extruding teat 30 of the part of above-mentioned hook-type bar 21 and in conjunction with bead 31.
32 is to be fulcrum with axle 33 among the figure, the gangbar that can rotate freely, and the cam pin 34 that is arranged at the one end contacts with the spiral cam 14 of above-mentioned cam wheel 13, and its other end is corresponding in conjunction with flange 31 with sliding panel 29.
Swivel plate 15 is when counter clockwise direction is rotated, and change gear 16 (opening and closing device 17) is when being meshed with worm gear 8, and the rotation of readout device CD-ROM drive motor 4 is transferred to cam wheel 13 by worm gear 8 and change gear 16.Along with the rotation of cam wheel 13, the cam pin 34 of spiral cam 14 extruding gangbar 32 makes gangbar 32 to rotation counterclockwise.Then, gangbar 32 extruding sliding panels 29 in conjunction with bead 31, move sliding panel 29 top in figure, the video disc withdrawing device carries out video disc and takes out action.
The device for ejecting of formation as implied above, when packing video disc 12 playbacks on the rotating disk 1 into, press eject key 18, the switch connection that does not identify among the figure, make readout device 2 when initial position moves, the dip plane 23 of the press section 19 extruding hook-type bars 21 of eject key 18 makes hook-type bar 21 rotate to clockwise direction.Therefore, hook-type bar 21 makes swivel plate 15 to counterclockwise rotating, and change gear 16 is meshed with worm gear 8.Being rotated further of hook-type bar 21 absorbed by the deflection of sheet spring 25.
After the press section 19 of eject key 18 is decontroled from dip plane 23, because the elasticity of spring 26 and sheet spring 25 resets hook-type bar 18 slightly, as shown in Figure 3, be in the position that is pressed into because of stopper section 24 makes eject key 18, change gear 15 remains on the position that is meshed with worm gear 8.
The rotation of readout device CD-ROM drive motor 4 is transferred to readout device supporting mass 3 by worm gear 8 and carriage 10, and readout device 2 moves along the record surface outside-in of video disc 12.Meanwhile, the rotation of readout device CD-ROM drive motor 4 is conveyed into cam wheel 13 by worm gear 8 and opening and closing device 17, and cam wheel 13 is to rotation counterclockwise.So as shown in Figure 4, the cam pin 34 of spirality cam 14 extruding gangbar 32 makes gangbar 32 to rotating counterclockwise.The other end of gangbar 32, extruding sliding panel 29 in conjunction with bead 31, sliding panel 29 top in figure is moved.The mobile action that makes the video disc withdrawing device take out the video disc that is in playback position of sliding panel 29.
Readout device supporting mass 3 stops after meeting detent 6a, makes readout device place initial position, and readout device CD-ROM drive motor 4 produces slip at pinion wheel 7 that constitutes carriage 10 and 9 of friction plates, continues rotation simultaneously.Cam wheel 13 makes sliding panel 29 continue to move owing to the revolving force of motor 4 produces rotation in addition.Carry out the final stage that video disc takes out action at the video disc withdrawing device, as shown in Figure 5, the extruding teat 30 extruding hook-type bars 21 of sliding panel 29.So hook-type bar 21 is mobile slightly to clockwise direction, therefore, the extruding teat 19 of eject key 18 is 24 disengagements from the stopper section, and spring 20 resets eject key 18.And after eject key 18 resetted, readout device CD-ROM drive motor 4 decommissioned, and hook-type bar 21 and swivel plate 15 are returned to initial position, and change gear 16 breaks away from worm gear 8.
In the aforesaid disc ejection device, to the 1st power transmission path between the readout device 2 carriage 10 is housed in readout device CD-ROM drive motor 4, readout device CD-ROM drive motor 4 to the 2nd power between the video disc withdrawing device passes the opening and closing device 17 that this path of control is opened and closed is housed on the footpath.Therefore, opening and closing device 17 is connected in ejection operation, and the power of above-mentioned readout device CD-ROM drive motor 4 makes readout device 2 when initial position moves, is carried out the taking-up operation of video disc 12 by the video disc withdrawing device; After even readout device 2 has been returned to initial position, on one side carriage 10 is slided, Yi Bian make the video disc withdrawing device continue to take out the action of video disc 12.Therefore, can shorten the start time of taking out video disc 12 actions, take out video disc 12 fast.
And holding device 28 makes eject key 18 remain on the position that is pressed into, and carries out the final stage that video disc takes out action at the video disc withdrawing device, has removed this maintenance action, and change gear 16 and worm gear 8 are separated.Therefore, when video disc took out the action end of a period, readout device CD-ROM drive motor 4 to the power transmission path between the video disc withdrawing device was cut off automatically.
Fig. 6 is, sets up the improvement of overload absorption plant on the structure of the foregoing description 1, and the part identical with embodiment 1 used same symbol.
That is, an end of swivel plate 15 also is provided with the gear 35 of another piece and gear 16 same diameters overlappingly except change gear 16 is arranged.Clip friction plate 36 between gear 16 and gear 35, gear 35 and friction plate 36 constitute overload absorption plant 37.And along with the rotation of swivel plate 15, gear 35 breaks away from or engagement with worm gear 8.
When gear 35 meshed with worm gear 8, the rotation of readout device CD-ROM drive motor 4 was transferred to cam wheel 13 by worm gear 8, gear 35 and switching device shifter 16, is transferred on the video disc withdrawing device that comprises sliding panel 29 by gangbar 32 again.But, in video disc taking-up process, apply by force when stoping the external force of taking out video disc 12, because producing with friction plate 36, gear 35 slides, cut off the power transmission of worm gear 8 to cam wheel 13.
In addition, overload absorption plant 37 is powerdrivenly to be made of additional the cut-out than carriage 10 bigger power.
Because possessed this formation,, can prevent to damage each parts of formation power transmission path so, when applying the external force of prevention video disc taking-up by force, slide because gear 35 and friction plate 36 produce even in taking out the video disc action.
Fig. 7 has set up on the structure of embodiment 1 when only carrying out ejection operation, improve to supply with the device of the voltage of readout device CD-ROM drive motor 4, and the part identical with embodiment 1 used identical symbol.
That is, the 38a among the figure, 38b are respectively the 1st power supply and the 2nd power supply.39 is the gauge tap of readout device CD-ROM drive motor 4, and 39a, 39b, 39c are respectively the 1st contact, the 2nd contact and the 3rd contact of gauge tap 39.The first power supply 38a, second source 38b and gauge tap 39 have constituted high voltage feedway 40 jointly.
Readout device CD-ROM drive motor 4 is in series by the 1st contact 39a and the 2nd contact 39b and the first power supply 38a.Second source 38b is installed between the 3rd contact 39c and the 2nd contact 39b.
When carrying out the video disc playback, the 1st contact 39a of gauge tap 39 and the 2nd contact 39b connect; Be pressed into eject key 18 when carrying out ejection operation, the 1st contact 39a of gauge tap 39 the 3rd contact 39c connects.The explanation of the reversal of poles device of changeable motor 4 sense of rotation when this has omitted playback.
As mentioned above, when playback, 4 of readout device CD-ROM drive motor link to each other with the first power supply 38a, link to each other with the series loop that second source 38b forms with the first power supply 38a during ejection operation.Therefore, when ejection operation, motor 4 high speed rotating can carry out the video disc pop-up action rapidly.
Fig. 8 is to Figure 12 shows that the present invention---and the embodiment 2 of disc ejection device, with the identical part of embodiment 1, used identical symbol.
Fig. 8 is the simple planimetric map that possesses the video disc playback set of disc ejection device, has shown the state after video disc 12 is placed into playback position.
Be provided with the readout device supporting mass 3 that supports readout device 2 on the next door of rotating disk 1, this carries out reciprocal device driven by readout device CD-ROM drive motor 4, and it is identical constituting with embodiment 1.In addition, the rotation of readout device CD-ROM drive motor 4 by worm screw 11, worm gear 8 and pinion wheel 7 transmission successively, and makes readout device supporting mass 3 carry out straight line between detent 6a, 6b by tooth bar 5 to move, and these are also identical with embodiment 1.
The next door of worm gear 8 is provided with big pinion wheel 42,43 coaxially and integratedly.Gear wheel 42 is meshed with neutral gear 41.With the axle of big pinion wheel 42,43 is that fulcrum can rotate freely rotor plate 44 and is provided with change gear 45 as opening and closing device.This change gear 45 and pinion wheel 43 are meshed.In addition, be inserted with friction plate 46 at pinion wheel 43 and 44 of rotor plates, rotor plate 44 maintains the identical rotation of sense of rotation of a court and big pinion wheel 42,43.
Pushing back plate 48 as the video disc of video disc withdrawing device rotates and is supported on freely on the axle 47.The center of rotation that pushes back plate 48 is formed with sector gear 49 and mountain shaped protrusions portion 50 respectively; The pivoting end that the next door of sector gear 49 is formed with cam ditch 51 and pushes back plate 48 is formed with the contact site 53 that contacts with the periphery of video disc 12.Cam ditch 51 is by an end and begins to the other end gradually to the close shape of the center of rotation that pushes back plate 48, and its other end is formed with a rake 53 that tilts to the direction away from center of rotation.
Pushing plate 56 rotations is supported on the axle 55 freely.Pushing the cam pin 57 and said gear ditch 51 embedding mutually that forms on the plate 56, making to push back plate 48 and push plate 56 interlocks.There is the contact site 58 with the periphery contact of video disc 12 the rotation end that pushes plate 56.
59 is to keep bar among the figure.One end of this maintenance bar 59 has press section 60, and is that fulcrum is rotatable freely with axle 61, and spring 62 makes the above-mentioned mountain shaped protrusions of press section 60 extruding portion 50.Therefore, along with the rotation that pushes back plate 48, press section 60 can change with respect to the contact position of mountain shaped protrusions portion 50, press section 60 is a boundary with the summit of mountain shaped protrusions portion 50, as shown in Figure 8, when contacting, push back plate 48 and keep the clockwise direction rotation with the dip plane of mountain shaped protrusions portion 50 lefts; As shown in Figure 10, when press section 58 and the mountain shaped protrusions portion 50 right-hand dip plane contact, push back plate 48 and keep being rotated counterclockwise.
63 is eject key among the figure.One end of the front end of this eject key 63 and declutcher control lever 64 links to each other.The axle 65 of the other end of declutcher control lever 64 and above-mentioned change gear 45 is relative.Declutcher control lever 64 is the rotatable rotation freely of fulcrum with axle 66, and keeps rotating to a direction under the effect of spring 67.This rotation direction resets for making eject key 63, and is the direction that change gear 45 is broken away from from gear 54.
In the aforesaid formation, as described in Figure 10,, push away and give as security the contact site 52 that pushes back plate 48, insert video disc 12, push back plate 48 clockwise direction and rotate, push plate 56 and also rotate along with pushing back plate 48 clockwise direction in the periphery of video disc 12.Video disc 12 is inserted in the last summit that keeps the press section 60 arrival chevron teats 50 of bar 59 as shown in figure 11 at this moment, is subjected to the elastic force of spring 62 on the dip plane of mountain shaped protrusions portion 50 lefts, pushes back plate 48 clockwise direction rotation rapidly quickly.At this moment, the periphery of the contact site 58 pushing video discs 12 of heap entering plate 56 is in video disc 12 pushing in device.Then, cam pin 57 moves to rake 53 places of cam ditch 51, pushes plate 56 to counterclockwise rotating slightly, and as shown in Figure 8, contact site 58 breaks away from video disc 12.
During playback in this state, as shown in figure 12, be pressed into eject key 63 after, the rotation of motor 4 is conveyed into pinion wheel 7 by carriage 10, readout device 2 moves to initial position.And because the rotation of big pinion wheel 42,43, swivel plate 44 clockwise direction are rotated and are made change gear 45 with gear 54 engagements.
Therefore, the power of motor 4 is conveyed into by gear 45 and pushes back plate 48, pushes back plate 48 and counterclockwise rotates, and as shown in Figure 11, with contact portion 52 video disc 12 is pushed back.Then when contact site 52 pushing dip plane, mountain shaped protrusions portion 50 right side, push back plate 48 and be rotated counterclockwise rapidly, contact site 52 pushes back video disc 12 as shown in Figure 10.
When perceiving after video disc is pushed back, motor 4 decommissions, because the effect of spring 67, declutcher control lever 64 separates change gear 45 and gear 54, resets simultaneously.
After readout device 2 arrived initial positions, the taking-up action that is pushed back the video disc 12 that plate 48 carries out by video disc was proceeded in the process that carriage 10 is slided.
Here the formation of embodiment 2 is identical with embodiment 1, carriage 10 is installed in readout device CD-ROM drive motor 4 to the 1st power transmission Lu Jingzhong between the readout device 2; To the 2nd power transmission path between the video disc withdrawing device (video disc pushes back plate 48), the opening and closing device (video disc pushes back plate 48) that this path of control is opened and closed is installed in readout device CD-ROM drive motor 4.Therefore during ejection operation, make the opening and closing device closure, the power of above-mentioned readout device CD-ROM drive motor 4 makes readout device 2 when initial position moves, makes the video disc withdrawing device carry out the taking-up action of video disc 12.After even readout device 2 resets to initial position, can also when being slided, carriage 10 continue the action that the video disc withdrawing device takes out video disc 12.Therefore, can shorten the start time of the taking-up action of video disc 12, promptly take out video disc 12.
And, holding device 28 makes eject key 18 remain on the position that is pressed into, the video disc that carries out at the video disc withdrawing device takes out the final stage of moving, remove and keep, change gear 16 and worm gear 8 are broken away from, when therefore video disc took out the action end of a period, readout device CD-ROM drive motor 4 to the power transmission path between the video disc withdrawing device was cut off automatically.
Embodiment 3
Figure 13 to Figure 21 is embodiments of the invention 3, with the previous embodiment same section, adopts identical symbol.
Figure 13 to Figure 15 is for showing the simple planimetric map of video disc playback set component part.Figure 13 inserts preceding state for video disc, and Figure 14 is the state in the video disc insertion process, and Figure 15 is placed into the state of playback position for video disc 12.Playback substrate 71 with respect to body 70 elasticity suspension proterties be supported in the playback set body 70, advance and retreat are equipped with ejection rod 72 freely on the lateral surface of body 70.
Push back and have curvilinear cam ditch 78 on the bar 75, push rod 74 is provided with the cam pin 79 that can insert above-mentioned cam ditch 78.80 for pushing back the rotating fulcrum axle of bar 75 among the figure.Push back and be formed with the gear wheel 81 that is integrated on the bar 75 coaxially, this gear wheel 81 and neutral gear 82 often mesh.When pushing back bar 75 and in figure, counterclockwise rotating, push back the 75a of portion and video disc 12 is back into from playback position insert a mouthful 70a.
The reverse side of playback substrate 71, as shown in figure 16, be separately installed with devices such as opening and closing device the 85, the 1st gauge tap the 86, the 2nd gauge tap 87 that readout device 2, readout device CD-ROM drive motor the 4, the 1st power transmission path the 83, the 2nd power transmission path 84, control the 2nd power transmission path leave and close and the 3rd gauge tap 88.When video disc 12 was transported to playback position from inserting a mouthful 70a insertion, the 1st gauge tap was sent the signal of starter motor.The 2nd gauge tap is sent the readout device position detection signal after detecting the introducing district that readout device 2 is in video disc 12.When video disc 12 is pulled to can be when inserting the position that mouthful 70a takes out, the 3rd gauge tap 88 is sent the signal that motor stops.And 11a is restriction worm screw 11 axially movable limiting parts among the figure.
As shown in figure 16, the 3rd gear 91 that is meshed by the 2nd gear 90 of the 1st gear 89 that is meshed with worm screw 11 and the coaxial one of the 1st gear, with the 2nd gear 90 of the 1st power transmission path 83, with the 4th gear 92 of the 3rd gear 91 engagements and and the 5th coaxial gear 93 of the 4th gear constitute.Tooth bar 5 engagements of the 5th gear 93 and readout device supporting mass.The 1st friction plate 94 that constitutes the 1st carriage is inserted between the 4th gear 92 and the 5th gear 93.
With coaxial the 6th gear 95 of the 3rd gear 91, hypodontia gear wheel 96 and and coaxial hypodontia pinion wheels that are one of hypodontia gear wheel 96 97 are common constitutes the 2nd power transmission path 84.Usually the toothless portion) 96a of hypodontia gear wheel 96 is relative with the 6th gear 95, keeps non-engagement state, but rotation just can make it have tooth portion and the 6th gear 95 to be meshed slightly.In addition, usually the toothless portion) 97a of hypodontia pinion wheel 97 is relative with above-mentioned neutral gear 82, keep non-engagement state, but rotation just can make it have tooth portion and neutral gear 82 to be meshed slightly.The 2nd friction plate 98 that constitutes the 2nd carriage is inserted between the 3rd gear 91 and the 6th gear 95.On hypodontia gear wheel 96, also be formed with switching manipulation cam 99 and the 1st joint portion 100a and the 2nd joint portion 100b.
Above-mentioned opening and closing device 85 is made of rotatable control lever freely.Opening and closing device 85 is radial four arms 101,102,103,104 that stretch out from center of rotation.The end of the 1st arm 101 and the 2nd arm 102 has banking pin 101a and 102a respectively.And banking pin 101a contacts with above-mentioned the 1st joint portion 100a or the 2nd joint portion 100b.Toothless portion) 96a, the 97a of hypodontia gear wheel 96 and hypodontia pinion wheel 97 is relative with the 6th gear 95 and neutral gear 82 respectively, and meanwhile, cam pin 102a joins with the inboard of above-mentioned cam-wall 76.In addition, the 3rd arm 103 carries out the operation of above-mentioned the 1st gauge tap 86 of open and close, and the 4th arm 104 is promoted by above-mentioned ejection rod 72.
The stereographic map of Figure 17 for seeing from bottom to top.Below above-mentioned hypodontia gear wheel 96, camcylinder portion 105 is installed highlightedly.And a cylindrical spring 106 that thrust takes place is installed in this camcylinder portion 105, makes hypodontia gear wheel 96 keep revolving force.When the pin 101a of the 1st arm 101 when the 1st joint portion 100a or the 2nd joint portion 100b break away from, hypodontia gear wheel 96 and hypodontia pinion wheel 97 toothed portion is respectively arranged with the 6th gear 95 and neutral gear 82 engagements.Above-mentioned cylindrical spring 106 is installed on the pivot point axle of opening and closing device 85, opening and closing device 85 keeps revolving force along the clockwise direction (direction of arrow) of Figure 16 and Figure 18, when pushing back bar 75 and be in the position that pushes back video disc 12, cam-wall 76 is contacted with cam pin 102a, and pin 101a remains on on the contacted position of the 1st joint portion 100a.
Figure 19 shows that the concise and to the point formation of the circuit of control playback set action.107 for after receiving the signal of the 1st to the 3rd gauge tap 86,87,88, judges the calculation circuit of video disc playback set operating state; The 108th, receive the control circuit of control video disc playback behind the signal of calculation circuit 107; The 109th, receive the signal of control circuit 108 after, the driving circuit of control readout device CD-ROM drive motor 4.
When the 1st gauge tap 86 was opened, calculation circuit 107 made driving circuit 109 actions by control circuit 108, and readout device CD-ROM drive motor 4 is rotated to positive dirction.At this moment readout device 2 moves to periphery from the introducing zone of video disc 12.In this process, the playback of 108 pairs of readout devices 2 of control circuit is controlled.
When the 1st gauge tap 86 disconnected, calculation circuit 107 made driving circuit 109 actions by control circuit 108, high voltage is supplied with readout device CD-ROM drive motor 4, motor 4 high speed backwards rotation.Therefore, readout device 2 is in the time of the introducing district of video disc 12 high-speed mobile, and control circuit 108 stops the playback action.When the 3rd gauge tap 88 disconnected, motor 4 decommissioned.
Below, the concrete action among the embodiment 3 describes.
Before video disc inserts, push rod 74 and push back bar 75 and be in the position that receives video disc 12 as shown in Figure 13, and also as Figure 16 and shown in Figure 180, cam-wall 76 is pushed cam pin 102a, and the stopper section 101a of opening and closing device 85 and the 1st joint portion 100a are contacted.At this moment, because the 1st gauge tap 86 and the 3rd gauge tap 88 disconnect, therefore, readout device 4 does not move, and tooth bar 5 extruding the 2nd gauge tap makes it to connect.
Up to video disc 12 inserts mouthful 70a insertion from video disc after, push back bar 75 and pushed the clockwise direction rotation by video disc 12.Cross the summit of cam-wall 76 when cam bawl 77 after, because the extruding force of the sub-roller 77 of cam pushes back bar 75 clockwise direction and rotates significantly, as shown in figure 20, cam-wall 76 breaks away from cam pin.And push rod 74 also with pushing back bar 75 motions, counterclockwise rotate, and video disc 12 pushed playback position on one side by one side.
Because cam-wall 76 breaks away from from cam pin 102a, opening and closing device 85 clockwise direction are rotated, and pin 101a throws off from the 1st joint portion 100a, move on the track of the 2nd joint portion 100b.Like this, hypodontia gear wheel 96 and hypodontia pinion wheel 97 counterclockwise rotates certain amount, though do not wait until they tooth portion is arranged simultaneously with corresponding gearing mesh the time, the 2nd joint portion 100b touches and stop motion mutually with pin 101a.In addition, the 1st gauge tap 86 is pushed away by the 3rd arm 103 and gives as security the back connection, and readout device CD-ROM drive motor 4 is rotated to positive dirction.So to tooth bar 5, readout device 2 moves to periphery from the introducing zone of video disc 12 revolving force of motor 4 by the 1st power transmission, carry out video disc playback action.
In the process of video disc playback action, after pushing ejection rod 72, as shown in figure 21, ejection rod 72 is pushed the 4th arm 104, and opening and closing device 85 counterclockwise rotates, and stopper section 101a breaks away from from the 2nd joint portion 100b, and when moving on the track of the 1st stopper section 100a, the 3rd arm 103 breaks away from from the 1st gauge tap 86, and this gauge tap 86 is cut off, and motor 4 is at a high speed to opposite spin.
Because stopper section 101a throws off from the 2nd joint portion 100b, the toothed portion that respectively has of hypodontia gear wheel 96 and hypodontia pinion wheel 97 does not mesh with the 6th gear 95 and neutral gear 82.When motor 4 was transferred to readout device 2 to reciprocal revolving force by the 1st power transmission path 83 and tooth bar 5, this revolving force also was conveyed into gear wheel 81 by the 2nd power transmission path 84 and neutral gear 82.The revolving force of motor 4 is conveyed into gear wheel 81, therefore, pushes back bar 75 and is rotated counterclockwise, and it pushes back the 75a of portion video disc 12 is pushed back to the direction of inserting mouthful 70a.In addition, because and hypodontia gear wheel 96 is the rotation of the switching manipulation cam 99 of one, the 3rd gauge tap is in case connect, the 1st joint portion 100a contacts with pin 101a, before hypodontia gear wheel 96 and switching manipulation cam 99 are about to stop action, the 3rd gauge tap is closed once more, so motor 4 decommissions.
On the other hand, because motor 4 is conveyed into readout device 2 to reciprocal revolving force by the 1st power transmission path 83 and tooth bar 5, so readout device 2 moves to the introducing district of video disc direction.When readout device 2 arrived the introducing district, tooth bar 5 extruding the 2nd gauge tap 87 made it to connect.
Readout device CD-ROM drive motor 4 continues rotation, until switching manipulation cam 99 the 3rd gauge tap 88 is cut off, and the action that pushes back bar 75 ejection video discs is over.But, after readout device arrives the introducing district, when being installed in the 1st carriage (the 1st friction plate 94) slip in the 1st power transmission path 83, pushing back bar 75 and carry out the pop-up action of video disc 12.
In addition, push back plate 75 in the process that pushes back video disc 12, when taking place to end to push back the action of bar 75 by force owing to reasons such as faulty operation or random operations, the 2nd carriage (the 2nd friction plate 98) that is installed in the 2nd power transmission path 84 produces slip, can prevent to damage video disc 12, motor 4 and other devices.Push back bar 75 after the state of Zhong Zhiing is disengaged by force and begin video disc immediately and push back action, guarantee from insert mouthful 70a, to take out video disc.
As mentioned above, by the present invention, in the readout device CD-ROM drive motor input side gear by the readout device drive motor is set to the 1st power transmission path between the readout device, the outgoing side gear that the readout device supporting mass is moved with this input side gear arranged coaxial, and insert the friction plate that between this input side gear and the outgoing side gear revolving force of input side gear is driven to the outgoing side gear, in above-mentioned the 2nd power transmission path, be provided with and accept that swivel plate indication is separated above-mentioned input side gear by the rotation of swivel plate or engagement operations opens and closes the change gear of above-mentioned the 2nd power transmission path, have that the above-mentioned readout device supporting mass of butt makes readout device stay in the detent of initial position when above-mentioned readout device resets in initial position, by ejection operation, make above-mentioned readout device when initial position resets in the above-mentioned readout device CD-ROM drive motor of startup, make the engagement of above-mentioned change gear and above-mentioned input side gear and carry out the taking-up operation of video disc by above-mentioned video disc withdrawing device, when above-mentioned readout device resets behind initial position, can make to produce between at least one side of above-mentioned friction plate and input side gear and outgoing side gear and slide, take out video disc rapidly to keep above-mentioned readout device in initial position.
In addition, by in the readout device CD-ROM drive motor to the power transmission path of video disc unloading device, be arranged on and cut off powerdriven overload absorption plant under the overload effect, even ending video disc by force takes out, because the overload absorption plant can absorb the power of readout device CD-ROM drive motor, therefore can prevent that locking apparatus sustains damage.
The explanation of symbol
2 read-out devices
4 read-out device CD-ROM drive motors
10 carriages
17 opening and closing devices
28 holding devices
29 video disc withdrawing devices
40 high voltage feedwaies
The 11a limiting part
70 playback set bodies
71 playback substrates
72 ejection rods
73 video disc conveyers
74 push rod
75 push back bar
75a pushes back section
76 cam-wall
77 cam bawls
78 cam ditches
79 cam pins
80 pivot point axles
81 gear wheels
82 neutral gears
83 the 1st power transmission path
84 the 2nd power transmission path
85 opening and closing devices
86 the 1st gauge tap
87 the 2nd gauge tap
88 the 3rd gauge tap
89 the 1st gears
90 the 2nd gears
91 the 3rd gears
92 the 4th gears
93 the 5th gears
94 the 1st friction plates
95 the 6th gears
96 hypodontia gear wheels
The 96a toothless portion)
97 hypodontia pinion wheels
98 the 2nd friction plates
99 switching manipulation cams
100a the 1st joint portion
100b the 2nd joint portion
101 the 1st arms
The 101a pin
102 the 2nd arms
The 102a cam pin
103 the 3rd arms
104 the 4th arms
105 camcylinder portions
106 cylindrical springs
107 calculation circuit
108 control circuits
109 driving circuits
Claims (3)
1. disc ejection device, it utilizes the power of readout device CD-ROM drive motor to take out video disc, comprise the 1st power transmission path from readout device CD-ROM drive motor (4) to readout device (2), described readout device (2) is supported by readout device supporting mass (3), and from readout device CD-ROM drive motor (4) to video disc withdrawing device (29,48) the 2nd power transmission path, when recording again, readout device supporting mass (3) is moved between the inboard of disc recording face and the outside, described inboard is an initial position, make readout device supporting mass (3) get back to the initial position of having crossed over above-mentioned inboard when taking out video disc, it is characterized in that from the field in the above-mentioned disc recording face:
In described the 1st power transmission path, setting is by the input side gear (8) of readout device drive motor, make the mobile outgoing side gear (7) of readout device supporting mass (3) with this input side gear arranged coaxial, and insert the friction plate (9) that between this input side gear and the outgoing side gear revolving force of input side gear is driven to the outgoing side gear, in described the 2nd power transmission path, be provided with and accept that swivel plate (15) indication is separated described input side gear by the rotation of swivel plate or engagement operations opens and closes the change gear (16) of described the 2nd power transmission path, have that the described readout device supporting mass of butt makes readout device stay in the detent (6a) of initial position when described readout device resets in initial position
By ejection operation, make above-mentioned readout device when initial position resets in the described readout device CD-ROM drive motor of startup, make the engagement of described change gear and described input side gear carry out the taking-up operation of video disc by above-mentioned video disc withdrawing device, when above-mentioned readout device resets behind initial position, make to produce to slide between at least one side of described friction plate and input side gear and outgoing side gear to keep above-mentioned readout device in initial position.
2. as claim item 1 described disc ejection device, it is further characterized in that, in above-mentioned the 2nd power transmission path, is provided with and cuts off powerdriven overload absorption plant (37) under the overload effect.
3. as claim item 1 described disc ejection device, it is further characterized in that this device also includes and can supply with high-tension high voltage feedway (40) to the readout device CD-ROM drive motor with the carrying out of ejection operation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP200016385 | 2000-06-01 | ||
| JP2000-16385 | 2000-06-01 | ||
| JP2000016385 | 2000-06-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1338741A CN1338741A (en) | 2002-03-06 |
| CN1251219C true CN1251219C (en) | 2006-04-12 |
Family
ID=18543525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01120741 Expired - Fee Related CN1251219C (en) | 2000-06-01 | 2001-05-28 | Disc ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1251219C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105960144A (en) * | 2016-06-07 | 2016-09-21 | 浪潮电子信息产业股份有限公司 | Server cold air supply device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104867505B (en) * | 2015-05-06 | 2018-04-03 | 合肥杰发科技有限公司 | DVD guiding aircrafts based on car-mounted terminal |
-
2001
- 2001-05-28 CN CN 01120741 patent/CN1251219C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105960144A (en) * | 2016-06-07 | 2016-09-21 | 浪潮电子信息产业股份有限公司 | Server cold air supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1338741A (en) | 2002-03-06 |
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