CN1208754C - Magnetic regeneration device - Google Patents
Magnetic regeneration device Download PDFInfo
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- CN1208754C CN1208754C CN 00105484 CN00105484A CN1208754C CN 1208754 C CN1208754 C CN 1208754C CN 00105484 CN00105484 CN 00105484 CN 00105484 A CN00105484 A CN 00105484A CN 1208754 C CN1208754 C CN 1208754C
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- demagnetization
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Abstract
The invention is to attain a stable changeover of a reproducing mode and recording mode by allowing a magnetic head for erase always generating a magnetic field for erase to surely bring into contact with a magnetic recording medium. The rotation stopping control of a rotary body is made by a solenoid, and also the holding time of a selection plate to the direction X2 is controlled by the exciting time of the solenoid. The selection plate is thereby changed over to the side X1 or X2 by a sorting cam, and by this changeover, the selection is made whether a supporting member for erase is turned counterclockwise or not, then a magnetic head for erase is brought into contact with a magnetic tape only when recorded.
Description
Technical field
The present invention relates to be set in and only make record and regeneration with magnetic head and the contacted regeneration mode of magnetic recording medium such as tape etc., and make described record and regeneration with magnetic head and demagnetization with the magnetic head while with such as the magnetic recorder/reproducer under the contacted logging mode of magnetic recording medium of tape etc.
Background technology
Using magnetic recorder/reproducer such as tape etc., when on tape, implementing magnetic recording, promptly can utilize demagnetization to contact with it with the original magnetic recording of cancellation at the upstream side that tape moves with magnetic head, and can utilize be arranged on tape move downstream side record and regeneration on described magnetic recording medium, implement magnetic recording with magnetic head.
In this magnetic recorder/reproducer, the combined magnetic head that is often using record and regeneration to combine with magnetic head with magnetic head and the demagnetization of current supply type.Yet when adopting this combined magnetic head, no matter be under regeneration mode or under logging mode, record and regeneration all contact the while with magnetic head with demagnetization with magnetic head with tape.Only under logging mode, apply bias current with magnetic head, and then produce erasing field with the magnetic core body in the magnetic head, and under regeneration mode, do not apply described bias current, thereby do not produce described erasing field by demagnetization to demagnetization.
Yet, the described current supply type demagnetization price comparison height of magnetic head, apply that bias current uses but also need be provided with, and can be under logging mode and regeneration mode the supply of described bias current be implemented to switch the electric loop of usefulness, this further makes the price comparison height of whole magnetic recorder/reproducer.
On the other hand, when adopting such as material demagnetizations such as permanent magnet magnetic head, and then constitute when generally producing demagnetization often with the parts in magnetic field, can reduce the price of demagnetization with magnetic head, nor need to switch the electric loop that described bias current is used again, thereby can under low-cost condition, produce whole magnetic recorder/reproducer.
Yet, when adopting this demagnetization that is generally producing erasing field often to use magnetic head, also need to be provided with described demagnetization is contacted with tape with magnetic head, and under regeneration mode, make demagnetization leave the switching mechanism of usefulness by the tape place with magnetic head.
If for instance, in disclose No. 83507/1998 disclosed prior art of communique by Jap.P., just be provided with and use the magnetic head frame of magnetic head to implement to move the pattern control cam of control usefulness, and this magnetic head frame is in halted state or is in the solenoid component that the releasing halted state implements to select usefulness carrying record and regeneration.By this solenoid component the demagnetization magnetic head control is implemented to drive with arm type parts, and by being implemented the mode of control the actuation duration of solenoid component, just can make magnetic erasing head be in restriction state with arm type parts by described magnetic erasing head control, or be in restriction release state with panel component.And, only when being in restriction release state, described magnetic erasing head can be moved towards the tape direction with panel component along with the magnetic head frame.
Yet, in disclose No. 83507/1998 disclosed this prior art of communique by Jap.P., only adopt the magnetic erasing head of implementing to drive by solenoid component control arm type parts, make magnetic erasing head can be in restriction state with panel component, or be in restriction release state, so under described restriction release state, often can not realize reliable the combination with between panel component and magnetic head frame at magnetic erasing head.Therefore under logging mode, magnetic erasing head may become unstable with the magnetic head frame towards the shift action of tape direction with panel component, thereby lacks practicality.
Summary of the invention
The present invention is exactly the invention that addresses the above problem usefulness, purpose of the present invention just provides and a kind of the demagnetization that is generally producing erasing field often can be contacted reliably with magnetic head with magnetic recording medium, and can stablize the magnetic recorder/reproducer that switches between enforcement regeneration mode and logging mode.
A kind of magnetic recorder/reproducer provided by the present invention, it can be provided with: record and regeneration magnetic head, and be positioned at than this record and regeneration demagnetization magnetic head with the upstream side position of the moving direction of the more close magnetic recording medium of magnetic head, be equipped with described record and regeneration with magnetic head, the rest position that can be left by the magnetic recording medium place with magnetic head with magnetic head and the contacted activation point of magnetic recording medium and in record and regeneration in described record and regeneration is first holding components movably, described first holding components is moved to the mode switch assembly that described activation point and described rest position are used, be equipped with described demagnetization with magnetic head, when moving to described activation point, described first holding components can make described demagnetization move to second holding components of using with the contacted demagnetization of magnetic recording medium position with magnetic head along with moving of described first holding components, alternative pack, by cam control is implemented in the shift position of its along continuous straight runs, selection portion, have otch or hole form, be arranged on described alternative pack place, when this alternative pack moves to the precalculated position, described selection portion is set described second holding components for following state, this state is for along with first holding components moves towards moving of activation point, make the rotor that is provided with described cam be in halted state or when removing this halted state, also be provided with the trigger unit that moves described alternative pack, and by after removing the halted state of rotor by described trigger unit, to change the mode of described trigger unit position, be controlled at the described cam in the rotation process and the relative position of described alternative pack, the spiral tube component of control trigger unit.
If adopt this magnetic recorder/reproducer, just can move described alternative pack by cam, thereby can whether move with moving of magnetic head and implement selection with magnetic head demagnetization by this alternative pack along with record and regeneration, therefore under logging mode and regeneration mode, all can implement control reliably with magnetic head, thereby can prevent misoperation demagnetization.
And demagnetization can be a kind of parts that generally producing erasing field often with magnetic head.Cam also can be set to the parts with the setting of mode switch components apart, such as can also will have the rotor of mode switch assembly, is arranged on another rotor.Second holding components can be rotation holding components as described later, also can be the holding components that can slide on installing with casing.
If for instance, can also be in foment or be under any state in the nonexcited state at described solenoid component, by the stop operating rotation of body of trigger unit, and under another kind of state, remove this halted state, and removing under the described halted state, set the mode that arrives the required time length of alternative pack than cam by making solenoid component implement the actuation duration, the relative position between described alternative pack and described cam is implemented control.
As mentioned above, when still being in the trigger unit of removing halted state enforcement control by rotor being in halted state, when alternative pack is implemented control, except described trigger unit and solenoid component, no longer need to be provided with other mechanism that the position control of alternative pack enforcement is used.
Particularly in this structure constitutes, preferably adopt mode switch to use cam, and this mode switch preferably is arranged on the same rotor in the lump with described cam with cam as described mode switch assembly.
And in this structure constitutes, can implement control to record and regeneration with magnetic head by a rotor, and demagnetization is implemented control with magnetic head, so can also only adopt a rotor.
And, magnetic recorder/reproducer constructed according to the invention, can also be provided with described second holding components is applied the elastomeric element of using towards the elastic force of described demagnetization locality, and when second holding components being construed as limiting by the selection portion on the described alternative pack, first holding components that is moving towards described activation point will not apply displacing force to described elastomeric element, and when described selection portion does not constitute described restriction to second holding components, will be from first holding components that is moving towards described activation point, by described elastomeric element, apply displacing force towards described demagnetization locality with respect to described second holding components.
And, magnetic recorder/reproducer constructed according to the invention, can also be provided with the casing place at device can be by the tape capstan of certain speed rotation, magnetic recording medium in clamping, the compressing wheel that is oppositely arranged with described tape capstan, and supporting the wheel hub holding components that this compressing wheel is used, and wheel hub holding components and described second holding components all are supported on described device casing place in mode free to rotate, so when described first holding components when described activation point moves, described wheel hub holding components will move along with moving of first holding components, described compressing wheel and described tape capstan the position of magnetic recording medium and are moved towards clamping.
As mentioned above, when making when supporting demagnetization and rotating with the wheel hub holding components with second holding components of magnetic head, can adopt described second holding components, replace and often need a compressing wheel supporting mechanism using in the auto-reverse type magnetic recorder/reproducer of the prior art, and can replace the mode of the alternative pack that the selection compressing wheel is used in the prior art by adopting described alternative pack provided by the present invention, constitute a kind of magnetic recorder/reproducer of the present invention.
Description of drawings
Below with reference to description of drawings most preferred embodiment of the present invention.
Synoptic diagram when Fig. 1 is in stop mode for expression magnetic recorder/reproducer constructed according to the invention, and be the planimetric map of mainly representing relation between rotor and first holding components (magnetic head base).
Synoptic diagram when Fig. 2 is in stop mode for expression magnetic recorder/reproducer constructed according to the invention, and be the planimetric map of mainly representing relation between rotor and the alternative pack (selecting to use plate-shaped member).
The planimetric map of the action when Fig. 3 switches to logging mode for expression by stop mode.
Planimetric map when Fig. 4 is in logging mode for expression.
The planimetric map of the action when Fig. 5 switches to regeneration mode for expression by stop mode.
Planimetric map when Fig. 6 is in regeneration mode for expression.
Embodiment
In each accompanying drawing, what reference number 1 was represented is the device casing.Sentencing the mode that can freely rotate at device with casing 1 is supporting and is batching side tape wireline reel 2 and supply side tape wireline reel 3, and by selecting rotating drive with motor, can drive and batch side tape wireline reel 2, drive supply side tape wireline reel 3 and rotate towards clockwise direction towards counterclockwise rotating.The magnetic tape cassette C that receipts are equipped with tape can be set on described tape wireline reel 2 and the tape wireline reel 3.At this moment be positioned at the center pit that magnetic tape cassette C goes up the tape wheel hub, will be inlaid in each tape wireline reel 2,3 places.
At logging mode or under regeneration mode, to batching side tape wireline reel 2 along counterclockwise implementing to slowly run driving.Under the tape fast-forward mode, drive along counterclockwise described tape wireline reel 2 being implemented high-speed rotation, and oppositely under the coiling pattern, along clockwise direction supply side tape wireline reel 3 is implemented high-speed rotation and drive at tape.
Device with the upper side place of casing 1 also projection be provided with tape capstan 4.Be installed with bearing 5 at device with casing 1 place, and this tape capstan 4 is installed on the bearing 5 in mode free to rotate.At the downside place of device, be provided with the flying wheel (not shown) that forms as one with described tape capstan 4 with casing 1.When flying wheel and tape capstan 4 apply the driving force that is provided by motor, can under certain speed, drive their in the counterclockwise direction and rotate.
As shown in Figure 2, also be provided with the driven wheel 10 that forms as one with the tape capstan at the downside place of installing with casing 1, this driven wheel 10 can be with tape capstan 4, along counterclockwise being driven rotation under certain speed.
And as shown in Figure 1, also be provided with magnetic head base 6 with the upper side place of casing 1 as first holding components at device.This magnetic head base 6 can move with implementing on the casing 1 freely to lead at device along direction Y1-Y2.The shown direction of direction Y1 is the stop position direction, and the shown direction of direction Y2 is the activation point direction.Extension spring 7 at magnetic head base 6 and device with cross-over connection between the casing 1, under the effect of the elastic contractile force of this extension spring 7, magnetic head base 6 is lived by direction Y1 extruding usually.
Carrying record and regeneration magnetic head Ha at magnetic head base 6 places.And in Fig. 1, magnetic head base 6 direction Y1 move to stop position, thus make record and regeneration with magnetic head Ha and be positioned at magnetic tape cassette C, be separated as the tape of magnetic recording medium.
At the cardinal principle central part place of described magnetic head base 6, be provided with as being extruded warpage sheet 6a portion, that form to (direction) warpage towards lower side towards the paper inboard.This warpage sheet 6a is by being formed on the cutting window of device with casing 1 place, and extends to the downside place of device with casing 1 always.The office, figure right side that is arranged in direction Y1 side on described magnetic head base 6 also integral body is formed with press section 6b, so that can form extruding to wheel hub holding components 8 by direction Y2 (activation point direction); The office, figure left side that is arranged in direction Y1 side on described magnetic head base 6 also integral body is formed with press section 6c, so that can form extruding to demagnetization with holding components (second holding components) 13 by direction Y2.The part place that is positioned at direction Y1 side on described magnetic head base 6 also is formed with notch 6d and 6e, and promptly towards last side direction (direction towards the paper outside), whole warpage is formed on the side portion place of these two notch 6d and 6e for two press section 6b and 6c.
In the upper side of device, be arranged in the office, figure right side of direction Y1 side, fixedly mounting supporting axis 9 with casing 1.Wheel hub holding components 8 is supported on this supporting axis 9 in the mode that can freely rotate.Compressing wheel P with described tape capstan 4 is oppositely arranged is supported on wheel hub holding components 8 places by hub spindle 11 in the mode that can freely rotate.
At the place, support-side end of described wheel hub holding components 8, batch the torque spring 12 that applies parts as elastic force is installed.Be positioned at the wrist type part 12a of a side on the torque spring 12, combine with the support portion 8a that is formed on described wheel hub holding components 8 places.Be positioned at the wrist type part 12b of opposite side on the torque spring 12, be supported on the 8b place, support portion that is positioned at wheel hub holding components 8 places, and the leading section of this wrist type part 12b extend to can direction Y2 always, the press section 6b that is arranged on described magnetic head base 6 places is implemented the position of extruding.
At the front end downside place of described wheel hub holding components 8, also extension is provided with the recovery that forms as one with it jut 8c.Described recovery is arranged on the place, inside of the notch 6d of described magnetic head base 6 with jut 8c location.And as shown in Figure 1, when magnetic head base 6 direction Y1 moved, described notch 6d pushed described recovery jut 8c with direction Y1, thereby wheel hub holding components 8 can be rotated along counter clockwise direction.
Be arranged in the office, figure left side of direction Y1 side on installing with casing 1, also fixedly mounting supporting axis 14, demagnetization is supported on this supporting axis 14 places with holding components (second holding components) 13 in the mode that can freely rotate.Demagnetization is carried in this demagnetization with on the holding components 13 with magnetic head Hb.This demagnetization can be the general parts that producing erasing field often with magnetic head Hb, and is the parts that are provided with permanent magnet at its anterior place in this form of implementation.
At the support-side end place of described demagnetization, batch the torque spring 15 that applies parts as elastic force is installed with holding components 13.Wrist type part 15a on this torque spring 15 and wrist type part 15b, all be integrally formed in the support portion 13a of demagnetization and combine with holding components 13 places.In the front end of demagnetization with holding components 13, also whole being formed with towards lower side to the position control jut 13b that extends.This position control is set in place the place, inside of the described notch 6e on magnetic head base 6 with jut 13b location.Position control also by being formed on the notch (not shown) of device with casing 1 place, and extends to the following place of device with casing 1 with jut 13b.
As shown in Figure 2, with the mode of plate-shaped member 18, be supported on the following side place of device as the selection of alternative pack with casing moving freely along direction X1-X2.Described direction X1-X2 is and the direction Y1-Y2 (stop position direction-activation point direction) that the moves described magnetic head base 6 usefulness direction of quadrature mutually.As selecting to apply the stretch coil spring 19 that the elastic force parts are used, usually described selection is being applied the elastic force of direction X1 (setting the direction that regeneration mode is used) with plate-shaped member 18.
Be positioned at the part place of direction Y2 side in plate-shaped member 18 in described selection, also integral body is provided with the position control section 18a that forms to (direction towards the paper inboard) warpage towards lower side.Be arranged in the part place in figure left side in plate-shaped member 18 in described selection, selection portion 21 forms otch or hole form.This selection portion 21 has the big width segments 21b that is positioned at direction Y2 side, and the little width segments 21a that is positioned at direction Y1 side.The part that is arranged in figure right side side edge among this little width segments 21a constitutes regeneration mode configuration part (limited section) 21a1, and the part that is arranged in its figure left side side edge constitutes the 21a2 of record mode setting portion.Be arranged on the position control jut 13b of described demagnetization, can be inserted into the place, inside of described selection portion 21 by being formed on the inside of device with the notch (not shown) at casing 1 place with holding components 13 places.
Right-hand end place among the figure in described selection usefulness plate-shaped member 18 also is formed with the 18b of the portion of being extruded (joint portion) towards the whole warpage of last side direction (by paper direction toward the outer side).
Also be provided with rotor 20 in described device side below casing 1.The mode of the center of this rotor 20 can freely rotating is installed in the supporting axis 20A place of being fixed on the device usefulness casing 1.
The outside perimembranous of rotor 20 is the gear part 20a of formative gear.This gear part 20a is formed with the first concave teeth part 20b and the second concave teeth part 20c that constitutes by part excision mode.As depicted in figs. 1 and 2, when the first concave teeth part 20b is positioned at the position relative with described driven wheel 10, be in stop mode.As Fig. 4 and shown in Figure 6, when the described second concave teeth part 20c is positioned at the position relative with described driven wheel 10, be in logging mode or regeneration mode.Between the first concave teeth part 20b and the second concave teeth part 20c, also be provided with the 3rd concave teeth part 20d.When this concave teeth part 20d is positioned at the position relative with described driven wheel 10, can be set in mark and inserts or playback mode.
Place below described rotor 20, integral body is formed with first and stops to stop to use jut 22b with jut 22a and second.As depicted in figs. 1 and 2, when the described first concave teeth part 20b was positioned at the position relative with described driven wheel 10, described first stopped the rotation of body 20 along clockwise direction (CW direction) that can stop operating with jut 22a.As Fig. 4 and shown in Figure 6, when the described second concave teeth part 20c was positioned at the position relative with described driven wheel 10, described second stopped the rotation of body 20 along clockwise direction (CW direction) that can stop operating with jut 22b.But also be provided with when described the 3rd concave teeth part 20d is positioned at the position relative with described driven wheel 10, the 3rd of the rotation usefulness of the body 20 that can stop operating stops to use jut, the 3rd stop with jut not shown in the drawings.
At the upper side central portion place of described rotor 20, the also whole mode switch cam 24 that is formed with as the mode switch assembly.As Fig. 1, Fig. 4 and shown in Figure 6, the warpage sheet 6a that is formed on described magnetic head base 6 places can be under the resilient force of described extension spring 7, and extruding firmly is positioned at the cam surface of described mode switch with the perimembranous place, the outside of cam 24.
Be provided with under state as shown in Figure 1 the stop mode configuration part 24a that can connect with described warpage sheet 6a, and under, the drive pattern configuration part 24b that can connect with described warpage sheet 6a as Fig. 4 and state shown in Figure 6 at described cam surface place.And drive pattern configuration part 24b compares with described stop mode configuration part 24a, and being set at apart from the center of rotation of rotor 20 is the longer position of radius distance.Being positioned at part on the described cam surface 24, that represented by reference number 24c (referring to Fig. 2) is the configuration part that mark inserts or playback mode is used.
The place also is formed with commutation cam 25 on described rotor 20.By the effect of this commutation, can change the pass through path of described selection, thereby can implement control to selecting with the position of plate-shaped member 18 in this way with position control section 18a in the plate-shaped member 18 with cam 25.Described commutation constitutes logging mode set path 26a with the interior lateral circle surface side of cam 25, and its outside circumference side constitutes regeneration mode set path 26b.
As shown in Figure 2, place below casing 1 is provided with trigger unit 31 at device, and this trigger unit 31 is supported on the axle 32 in the mode that can freely rotate, and axle 32 is fixed on device casing 1 place.Trigger unit 31 is made of integrally formed two arm type parts, the front end integral body of arm type parts be provided with the rotation of the body 20 that stops operating or remove this stop usefulness stop to use configuration part 31a, be formed with the press section 31b that can combine in the front end of another arm type parts, and this is extruded the right positions place that the 18b of portion is formed on described selection usefulness plate-shaped member 18 with the portion 18b of being extruded.
At device solenoid component 33 as the triggering power source also is installed on casing 1, plunger part 34 wherein combines with lateral protrusions 31c on the described trigger unit 31.Lateral surface at plunger part 34 also is installed with compression spring 35 laterally, thereby can pass through the elastic force of this compression spring 35, and plunger part 34 is lived towards its projected direction extruding.
The method of operation to described magnetic recorder/reproducer describes below.
(stop mode)
Stop mode as depicted in figs. 1 and 2.Solenoid component 33 as shown in Figure 2 is in nonexcited state, and plunger part 34 is outstanding state.Therefore, trigger unit 31 can rotate towards clockwise direction.At this moment, on the trigger unit 31 stop with configuration part 31a will be positioned at rotor 20 on first stop the position to combine with jut 22a.
As shown in Figure 1, the warpage sheet 6a on the magnetic head base 6 can connect with the stop mode configuration part 24a on the cam 24 with mode switch, under the resilient force of described extension spring 7, warpage sheet 6a can be squeezed in 24a place, stop mode configuration part.This extruding force can apply elastic reaction towards clockwise direction (CW direction) to rotor 20, thereby can stop to be squeezed in stopping on the trigger unit 31 with described first, and then can make rotor 20 stably remain on halted state with 31a place, configuration part with jut 22a.Under this halted state, the first concave teeth part 20b will be positioned at the position relative with driven wheel 10.
As shown in Figure 1, under described this stop mode, warpage sheet 6a on the magnetic head base 6 will connect with the stop mode configuration part 24a that is positioned at apart from the closer position of center of rotation, so can make magnetic head base 6 direction Y1 move to stop position, and record and regeneration are left by the tape place that is positioned at the inner place of magnetic tape cassette C with magnetic head Ha.Be positioned at the notch 6d of office, right side on the magnetic head base 6, can limit along the mobile enforcement of direction Y2 restoring, thereby wheel hub holding components 8 can not be rotated towards clockwise direction, compressing wheel P is left by tape capstan 4 places with jut 8c.And under the effect of holding components 13 of demagnetization usefulness, be positioned at regeneration mode configuration part (limited section) 21a1 that selects with the selection portion 21 right edge places on the plate-shaped member 18, can implement restriction with jut 13b towards anticlockwise rotation to position control, thereby make demagnetization can not rotate towards counter clockwise direction, and then demagnetization is left by the tape place that is positioned at the inner place of magnetic tape cassette C with magnetic head Hb with holding components 13.
And as shown in Figure 2, press section 31b on the trigger unit 31 is also left with the portion that the is extruded 18b place on the plate-shaped member 18 by selection, therefore under the resilient force of stretch coil spring 19, select to be directed to the position of direction X1 with plate-shaped member 18.
(change action of using by stop mode to logging mode)
When switching to logging mode by stop mode, motor begins to start, thereby under certain speed, makes tape capstan 4 and driven wheel 10 along counterclockwise rotating.
The excitation of after described rotating drive begins solenoid component 33 being implemented can attract prop drawing plunger member 34, and then makes trigger unit 31 towards counterclockwise rotating.And stopping on the trigger unit 31 will stop to leave with jut 22a place with configuration part 31a by first, and remove rotor 20 residing halted states.At this moment by the warpage sheet 6a on the magnetic head base 6, can apply elastic force to mode switch with cam 24 along clockwise direction, thereby can be when removing halted state, rotor 20 is rotated along clockwise direction, and then the first concave teeth part 20b is left by driven wheel 10 places, the gear part 20a on the rotor 20 is meshed with driven wheel 10.Just the rotating force of driven wheel 10 can be passed to rotor 20 places subsequently, rotor 20 is implemented along clockwise rotating drive.
When described trigger unit 31 when counterclockwise rotating, be formed on the press section 31b on the trigger unit 31, will firmly be positioned at along direction X2 extruding and select, thereby selection is moved with plate-shaped member 18 direction X2 with the 18b of the portion that is extruded on the plate-shaped member 18.To the time that solenoid component 33 is implemented excitation, can set more longerly than making commutation reach the time of selecting to use the position control section 18a place on the plate-shaped member 18 to need with cam 25.When commutation reaches position control section 18a place with cam 25, select to be maintained at direction X2 place with plate-shaped member 18, so described position control section 18a will be directed to the logging mode set path 26a at the inboard perimembranous place that being positioned at commutates uses cam 25, further direction X2 enforcement is mobile with plate-shaped member 18 thereby make selection.This situation as shown in Figure 3.
As shown in Figure 3, along with selecting moving with plate-shaped member 18 direction X2, the 21a2 of record mode setting portion on the left of being provided with in the drawings on the selection portion 21 at place, with direction X2 extrusion position control jut 13b, thereby demagnetization is remained under the state that counterclockwise rotates with holding components 13.Therefore, be installed in demagnetization with respect to curling with the wrist type part 15b on the torque spring 15 at the place, support-side end of holding components 13, the press section 6c that is formed on the magnetic head base 6 will be positioned at by the direction Y1 side position relative with it.
By the rotation of described rotor 20, mode switch, makes magnetic head base 6 produce extruding and moves direction Y2 with the cam surface on the cam 24, so at this moment, described press section 6c pushes described wrist type part 15b with direction Y2.Therefore, as shown in Figure 4 demagnetization will be towards counterclockwise rotating with holding components 13, thereby demagnetization is contacted with tape within being positioned at magnetic tape cassette C with magnetic head Hb.Under logging mode as shown in Figure 4, the power that is produced by described press section 6c will be by torque spring 15, and is applied on the demagnetization usefulness holding components 13 as rotating force in the counterclockwise direction, thereby demagnetization flexibly is squeezed on the tape with magnetic head Hb.
Same, when described magnetic head base 6 direction Y2 move, be formed on the press section 6b at place, right side on the magnetic head base 6, the wrist type part 12b of torque spring 12 is lived in direction Y2 extruding, and this torque spring 12 is batched the place, support-side end that is installed on the wheel hub holding components 8.Therefore under logging mode as shown in Figure 4, wheel hub holding components 8 will rotate towards clockwise direction under the resilient force of torque spring 12, thereby can tape be squeezed in tape capstan 4 places by compressing wheel P.
Be positioned at as shown in Figure 4 rotor 20 before beginning to rotate, solenoid component 33 is in nonexcited state, so trigger unit 31 can rotate towards clockwise direction.Therefore be arranged on the second concave teeth part 22b on the rotor 20, will be positioned at stopping on the trigger unit 31 and connect with configuration part 31a.At this moment the second concave teeth part 20c on the rotor 20 will be positioned at the position relative with driven wheel 10, and blocking-up is passed to the power at rotor 20 places by driven wheel 10.
Under logging mode as shown in Figure 4, the mode switch by being arranged on rotor 20 places is with the effect of the drive pattern configuration part 24b on the cam 24, and magnetic head base 6 is with direction Y2 big the moving of making comparisons.And under the resilient force of extension spring 7, the warpage sheet 6a on the magnetic head base 6 is with direction Y1, and the drive pattern configuration part 24b on the mode switch usefulness cam 24 is stated in the extruding residence, thereby applies the elastic force of rotating towards clockwise direction to rotor 20.Under the effect of this rotation elastic force, second stops will to be compressed in stopping with 31a place, configuration part on the trigger unit 31 with jut 22b, thereby rotor 20 is stably remained under as shown in Figure 4 the state.
Under logging mode as shown in Figure 4, described magnetic head base 6 moves direction Y2, will contact with tape with magnetic head Ha so write down and regenerate, and demagnetization also will contact with tape with magnetic head Hb.Because tape is the state that is clamped between tape capstan 4 and the compressing wheel P, so when tape capstan 4 rotates in the counterclockwise direction, tape is implemented tape transport with direction X2, therefore be positioned at the rotating drive that the inner tape wheel hub of locating of magnetic tape cassette C is implemented by batching 2 pairs of side tape wireline reels, just can implement to reel tape.
(by the change action of stop mode) to regeneration mode
When being set in regeneration mode, similar when being set in logging mode, it promptly also is the stop mode by as shown in Figure 2, begin to encourage solenoid component 33, attract prop drawing plunger member 34, and then make trigger unit 31 stop to stop to leave by first with jut 22a place with configuration part 31a towards counterclockwise rotating, making.Therefore under the effect of driven wheel 10, rotor 20 will rotate towards clockwise direction.
Yet at this moment, to actuation duration of solenoid component 33 set shorter, and commutation reach with cam 25 select with the position control section 18a place on the plate-shaped member 18 before, make solenoid component 33 be in nonexcited state, and make trigger unit 31 works towards clockwise rotation.In this course, to make press section 31b on the trigger unit 31 by the excitation that solenoid component 33 is implemented, direction X2 extruding firmly is extruded the 18b of portion, select to move thereby make with plate-shaped member 18 direction X2, but solenoid component 33 will be in nonexcited state subsequently, so selecting again will be under the tensile force effect of stretch coil spring 19 with plate-shaped member 18, direction X1 does to restore motion.Its result as shown in Figure 5, promptly described position control section 18a is directed to and is arranged in the regeneration mode set path 26b of commutation with the perimembranous place, the outside of cam 25.And under state as shown in Figure 5, described regeneration mode will make with set path 26b and select with plate-shaped member 18 that further direction X1 moves by position as shown in Figure 2.
Therefore, be arranged in the regeneration mode configuration part 21a1 that selects with the selection portion 21 right positions places of plate-shaped member 18, to be positioned at the position control jut 13b of demagnetization towards the clockwise direction extruding with holding components 13 places, can be under the state that clockwise direction is rotated thereby demagnetization is remained on holding components 13.As shown in Figure 5, when demagnetization with holding components 13 when clockwise direction is rotated, the leading section of the wrist type part 15b on the torque spring 15 will move to than the position on the left of among the more close figure of press section 6c on the magnetic head base 6.
Similar with the action that switches to logging mode, by rotor 20 along clockwise rotation, mode switch will make magnetic head base 6 direction Y2 move with cam 24, and the press section 6c on the magnetic head base 6 at this moment, will under the state that does not connect with the leading section of described wrist type part 15b, move by direction Y2.Therefore, demagnetization can not be rotated towards counter clockwise direction with holding components 13, thereby make demagnetization not connect with tape with magnetic head Hb.
Under regeneration mode as shown in Figure 6, similar with logging mode as shown in Figure 4, on the rotor 20 second stops to connect with configuration part 31a with stopping on jut 22b and the trigger unit 31, thereby the rotation of the body 20 that stops operating can be under the state relative with driven wheel 10 at the second concave teeth part 20c.
At this moment still similar with logging mode, promptly by wheel hub holding components 8 towards clockwise rotation, and can be under the effect of compressing wheel P tape be squeezed in tape capstan 4 places.Under the effect of mode switch with the drive pattern configuration part 24b on the cam 24, magnetic head base 6 is the direction Y2 big forward motion of making comparisons, thereby record and regeneration are contacted with tape with magnetic head Ha.And the rotating force of described tape capstan 4 will be passed to the tape place along direction X2, thereby can along take-up direction the tape wheel hub be rotated by batching side tape wireline reel 2.
And under regeneration mode, select with plate-shaped member 18 direction X1 side shifting, so can implement restriction with jut 13b towards anticlockwise rotation with the position control on the holding components 13 to demagnetization by being positioned at the regeneration mode configuration part 21a1 that selects with selection portion 21 places on the plate-shaped member 18.Therefore demagnetization can not produce bigger rotation along counter clockwise direction with holding components 13, thereby makes demagnetization can not contact with tape with magnetic head Hb.
(by logging mode or regeneration mode change action) to stop mode
When under the logging mode as shown in Figure 4 or under regeneration mode as shown in Figure 6, when encouraging solenoid component 33 in short time, trigger unit 31 will be towards counterclockwise rotating, stop to stop to leave by second on the rotor 20 thereby make, and then remove its halted state with jut 22b place with configuration part 31a.At this moment, the warpage sheet 6a on the magnetic head base 6 will be under the resilient force of extension spring 7, and the drive pattern configuration part 24b on the mode switch usefulness cam 24 is lived in extruding, thereby applies towards clockwise rotation elastic force to rotor 20.
Therefore when removing described halted state, rotor 20 will begin to do towards clockwise rotation, thereby the second concave teeth part 20c is left by driven wheel 10 places, and gear part 20a is meshed with driven wheel 10.Therefore, rotor 20 will rotate towards clockwise direction under the effect of driven wheel 10.Subsequently will be as shown in Figure 2, make first on the rotor 20 stop to connect with configuration part 31a with stopping on jut 22a and the trigger unit 31, thus can be under the relative state of the first concave teeth part 20b and driven wheel 10, the rotation of the body 20 that stops operating.
(setting of mark insertion or playback mode)
When switching to described stop mode by as shown in Figure 6 regeneration mode, the 3rd concave teeth part 20d can be positioned at the position relative with driven wheel 10, thereby can make the 3rd on the rotor 20 stop the jut (not shown) and described stopping to connect with configuration part 31a, and the rotation of the body 20 that stops operating, and can with cam 24 magnetic head base 6 be restored to the position such as the more close direction Y1 in position shown in Figure 6, and stop at this position by mode switch.
At this moment, by the effect of the notch 6d on the magnetic head base 6, wheel hub holding components 8 will rotate towards counter clockwise direction, thereby compressing wheel P is left by tape capstan 4 places.Record and regeneration will stop at and tape position contacting place gently with magnetic head Ha.When in this state when batching the 2 pairs of tapes of side tape wireline reel and implement high speed wind-up, can be set under the mark insertion pattern, and when batching, can be set under the playback mode by 3 pairs of tapes enforcements of supply side tape wireline reel.
And can be when described solenoid component 33 is in foment, by trigger unit 31 rotation of body 20 that stops operating, and when solenoid component 33 is in nonexcited state, remove rotor 20 residing halted states.
If adopt aforesaid the present invention, just can implement control to the position of alternative pack by cam, and can be by being arranged on the selection portion at this alternative pack place, whether selection makes is equipped with second holding components of demagnetization with magnetic head, along with carrying record and regenerating and move with the moving of first holding components of magnetic head, second holding components is moved reliably, and demagnetization is squeezed on the tape with magnetic head, thereby can realize stable change action.
Claims (5)
1. magnetic recorder/reproducer is characterized in that being provided with:
Magnetic head use in record and regeneration, and is positioned at than this record and regenerates with the demagnetization magnetic head of the upstream side position of the moving direction of the more close magnetic recording medium of magnetic head,
Be equipped with described record and regeneration with rest position magnetic head, that can leave by the magnetic recording medium place with magnetic head with magnetic head and the contacted activation point of magnetic recording medium and in record and regeneration in described record and regeneration first holding components movably,
Described first holding components is moved to the mode switch assembly that described activation point and described rest position are used,
Be equipped with described demagnetization with magnetic head, when described first holding components moves to described activation point, can make described demagnetization move to second holding components of using with the contacted demagnetization of magnetic recording medium position with magnetic head along with moving of described first holding components
Alternative pack is implemented control by cam to the shift position of its along continuous straight runs,
Selection portion has otch or hole form, is arranged on described alternative pack place, when this alternative pack moves to the precalculated position, described selection portion is set described second holding components for following state, and this state is for along with first holding components moves towards moving of activation point
Make the rotor that is provided with described cam be in halted state or when removing this halted state, also be provided with the trigger unit that moves described alternative pack, and by after removing the halted state of rotor by described trigger unit, to change the mode of described trigger unit position, be controlled at the described cam in the rotation process and the relative position of described alternative pack
The spiral tube component of control trigger unit.
2. magnetic recorder/reproducer as claimed in claim 1, it is characterized in that being in foment or being under any state in the nonexcited state at described solenoid component, by the stop operating rotation of body of trigger unit, and under another kind of state, remove this halted state, and removing under the described halted state, set the mode that arrives the required time length of alternative pack than cam by making solenoid component implement the actuation duration, the relative position between described alternative pack and described cam is implemented control.
3. a magnetic recorder/reproducer as claimed in claim 1 it is characterized in that described mode switch assembly is the mode switch cam, and this mode switch is arranged on identical rotor place in the lump with cam and described cam.
4. magnetic recorder/reproducer as claimed in claim 1, it is characterized in that also being provided with described second holding components is applied the elastomeric element of using towards the elastic force of described demagnetization locality, and when second holding components being construed as limiting by the selection portion on the described alternative pack, first holding components that is moving towards described activation point will not apply displacing force to described elastomeric element, and when described selection portion does not constitute above-mentioned restriction to second holding components, first holding components then from moving towards described activation point, by described elastomeric element, apply displacing force towards described demagnetization locality with respect to described second holding components.
5. magnetic recorder/reproducer as claimed in claim 1, it is characterized in that also being provided with the casing place at device can be by the tape capstan of certain speed rotation, magnetic recording medium in clamping, the compressing wheel that is oppositely arranged with described tape capstan, and supporting the wheel hub holding components that this compressing wheel is used, and wheel hub holding components and described second holding components all are supported on described device casing place in mode free to rotate, when described first holding components when described activation point moves, described wheel hub holding components will move along with moving of first holding components, described compressing wheel the position of magnetic recording medium and is moved by described tape capstan towards clamping.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07938999A JP3649938B2 (en) | 1999-03-24 | 1999-03-24 | Magnetic recording / reproducing device |
| JP079389/1999 | 1999-03-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1268734A CN1268734A (en) | 2000-10-04 |
| CN1208754C true CN1208754C (en) | 2005-06-29 |
Family
ID=13688520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00105484 Expired - Fee Related CN1208754C (en) | 1999-03-24 | 2000-03-22 | Magnetic regeneration device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3649938B2 (en) |
| CN (1) | CN1208754C (en) |
-
1999
- 1999-03-24 JP JP07938999A patent/JP3649938B2/en not_active Expired - Fee Related
-
2000
- 2000-03-22 CN CN 00105484 patent/CN1208754C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3649938B2 (en) | 2005-05-18 |
| JP2000276811A (en) | 2000-10-06 |
| CN1268734A (en) | 2000-10-04 |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20050629 |