CN1076805A - Magnetic band transporting system and magnetic head assembly - Google Patents
Magnetic band transporting system and magnetic head assembly Download PDFInfo
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- CN1076805A CN1076805A CN 93102186 CN93102186A CN1076805A CN 1076805 A CN1076805 A CN 1076805A CN 93102186 CN93102186 CN 93102186 CN 93102186 A CN93102186 A CN 93102186A CN 1076805 A CN1076805 A CN 1076805A
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Abstract
The object of the invention is to provide a kind of magnetic head assembly that improves tape running.The present invention is at picture signal record or reproduces the magnetic band transporting system that pillar and magnetic head are set with the rotating cylindrical body both sides, tape one lateral margin extruding is constrained to opposite side and the guide portion of rotating cylindrical body is constrained to another lateral margin extruding of tape in the device of one side at two lateral braces, the device that another lateral margin extruding of tape is constrained to a lateral margin is set on the magnetic head of being located at the pillar rear.Can improve tape running stability according to the present invention.Also can make the extruding constraining force balance of tape constant even omit the anchor post be located at the magnetic head rear in the past, thereby have and to reduce components number, obtain its effect at lower cost.
Description
The present invention relates to improve the magnetic head assembly of tape running stability.
Figure 17 is the accompanying drawing that general VHS tape recorder (VTR) magnetic band transporting system section construction is shown.Among Figure 17, label 1 illustrates rotating cylindrical body cylindraceous, the lateral parts of this rotating cylindrical body 1 is embedded with picture signal record and reproduces the magnetic head use and so on, by tape 2 being pressed on the side of this rotating cylindrical body 1, under the state of tape 2 tape transports, make simultaneously rotating cylindrical body 1 rotation, make magnetic head work and be able to carry out the read-write of picture signal.
Import side (left side of rotating cylindrical body 1 among Figure 17) at the tape of aforementioned rotating cylindrical body 1 and be provided with by the driving mechanism that is arranged on magnetic recording system body one side and move freely pillar 3, and be provided with the pillar 4 that plays with aforementioned pillar 3 same functions in the tape derivation side (right side of rotating cylindrical body 1 among Figure 17) of rotating cylindrical body 1.These pillars the 3, the 4th are used for tape 2 extracted out and be pressed in the parts on the rotating cylindrical body 1 from the tape cassete of accommodating tape 2.
Also have along aforementioned tape 2 tape paths to be provided with importing lateral brace 5 in the place ahead of pillar 3 one side respectively, being provided with in the rear of pillar 4 side derives lateral brace 6.
In addition, be sequentially with combined record 7, anchor post 8, capstan roller 9 and pinch roller 10 along tape 2 tape paths in rear one side that derives lateral brace 6.
Various effort in aforementioned band transporting system, have been done, so that tape 2 is along the groove shape guidance part 1a that is formed on rotating cylindrical body 1 side tape transport reliably.
One of its effort is that the upper flange 6a by the upper flange 5a of pillar 5 and pillar 6 uses restraint to the upper limb position of tape 2 tape 2 is retrained, and reliably tape 2 lower edges are pressed on the guidance part 1a of rotating cylindrical body 1, improve the position constraint and the tape transport stability of tape 2.
If adopt this class to constitute,, thereby given play to the stable effect of tape 2 tape transports because are alternatively up and down ground carries out the position shown in the oblique line of Figure 17 constraints along the tape path of tape 2.
For making described tape 2 tape transports more stable, also adopted following formation, promptly the lower flange 8a by anchor post 8 uses restraint to tape 2 lower edge positions, makes about the position constraint that acts on tape 2 becomes order along its tape path.
Yet, from reducing the magnetic recording system components number and the aspect that reduces cost, under the stable prerequisite of tape running, wish to omit anchor post 8.
Here, aforementioned combined record 7 is as shown in Figure 18 amplifies because make sound sound cancellation magnetic head 12 and sound acoustic control system magnetic head 13 they the side adjacency and become one, so these magnetic heads the 12, the 13rd vertically are arranged on the mounting plate 14.Aforementioned sound sound cancellation magnetic head 12 has the audio signal cancellation magnetic core 12a that is formed on its front upper, and sound acoustic control system magnetic head 13 has the magnetic core 13a of the audio signal read-write usefulness that is formed on its front upper, and the magnetic core 13b of control signal read-write usefulness is arranged at the bottom in front.
The combined record 7 of aforementioned formation is that sandwich parts pedestal 15 for example shown in Figure 19 is assemblied on the magnetic recording system base plate.The mounting plate 16 of assembling combined record 7 is some different shapes with shown in Figure 180 comparing among Figure 19.Screwed togather in being formed at 3 screw holes in mounting plate 16 bights and adjusted primary screw 17,18,19, these adjustment primary screws 17,18,19 screw togather in the screw hole that into is formed on the mounting plate 16 and position adjustments freely is assemblied in parts pedestal 15 anterior sides.And parts pedestal 15 rear portions one side bends to U word shape, is formed with datum hole 20,21 on this part.
This datum hole the 20, the 21st is used when being fixed on parts pedestal 15 on the magnetic recording system base plate, allow the reference axis that is erected on the magnetic recording system base plate run through aforementioned datum hole 20,21, combined record 7 can be assemblied on the magnetic recording system by fixed part pedestal 15.
As mentioned above the magnetic head assembly of Gou Chenging be by rotation adjust primary screw 17,18,19 adjust sound acoustic control system magnetic head magnetic gap and tape width direction relative angle (position angle).
Yet, the formation of magnetic head assembly as mentioned above, in making the combined record operation, not only must degree of precision when the depth of parallelism of carrying out sound acoustic control system magnetic head 13 and sound sound cancellation magnetic head 12 and height control, and when being assemblied in magnetic head assembly on the magnetic tape recorder, must get the aforementioned adjustment primary screw of mat 17,18,19 and adjust above-mentioned position angle, thereby take time and energy very much during the magnetic tape recorder assembling.And the adjustment of position adjustments and so on also is essential when being bonded on combined record 7 on the mounting plate 16.
And because anchor post 8 separates the location with combined record 7, thereby tape running might be unstable on the combined record 17.
The present invention just In view of the foregoing, its purpose is to provide a kind of magnetic band transporting system and magnetic head assembly of realizing that tape running is stable and the combined record assembling need not to adjust.
The invention that claim 1 is put down in writing is in order to solve foregoing problems, to be used for the record or the reproduction of picture signal, be a kind of magnetic band transporting system, and it has: the rotating cylindrical body that imports tape; Be arranged at rotating cylindrical body and import the importing lateral brace of side directed tape; Be arranged at rotating cylindrical body and derive the derivation lateral brace of side directed tape; The derivation side that is arranged at this derivation lateral brace is carried out the magnetic head that the signal corresponding to tape writes or reads, wherein, on described importing lateral brace, be formed with the tape width direction one lateral margin position constraint member of position constraint in addition, on described rotating cylindrical body, be formed with described another lateral margin of tape width direction guidance part of position constraint in addition, on described derivation lateral brace, be formed with the tape width direction one lateral margin position constraint member of position constraint in addition, and on described magnetic head, set up described another lateral margin of tape width direction device of position constraint in addition.
The invention that claim 2 is put down in writing is in order to solve foregoing problems, to be used for the record and the reproduction of picture signal, be a kind of magnetic band transporting system, and it has: the rotating cylindrical body that imports tape; Be arranged at rotating cylindrical body and import the importing lateral brace of side directed tape; Be arranged at rotating cylindrical body and derive the derivation lateral brace of side directed tape; The derivation side that is arranged at this derivation lateral brace is carried out the magnetic head that the signal corresponding to tape writes or reads, wherein, import side at described magnetic head and vertically be provided with the adjustment post with the one side at least of deriving side, and on described importing lateral brace, be formed with the tape width direction one lateral margin position constraint member of position constraint in addition, on described rotating cylindrical body, be formed with described another lateral margin of tape width direction guidance part of position constraint in addition, on described derivation lateral brace, be formed with the tape width direction one lateral margin position constraint member of position constraint in addition, and on described magnetic head, set up on the one hand the described tape width direction one lateral margin device of position constraint in addition, on described adjustment post, be formed with on the other hand described another lateral margin of tape width direction position constraint member of position constraint in addition.
The invention that claim 3 is put down in writing is a kind of fixed head and the magnetic head assembly that guides tape running, a plurality of columns and pair of beams by configuration parallel to each other form the frame pedestal, described magnetic head is fixed on described frame pedestal inside, on described pair of beams, forms the guide part that guides described tape both side edges respectively.
The invention that claim 4 is put down in writing is a kind of magnetic head assembly, and it comprises: at the magnetic head of tape sliding contact surface one side configuration magnetic core; Guide part at least one side directed tape of tape running direction of magnetic head; To the constriction that tape one side uses restraint, it is characterized in that at this guide part one end the tape sliding contact surface of described magnetic head or the spigot surface of described guide part one of them relative tape width direction at least tilt so that make tape one side pressure on constriction.
The invention that claim 5 is put down in writing is characterized in that, comprises, has disposed the magnetic head of magnetic core in tape sliding contact surface one side; Disposed the guide part of guiding tape in the tape running direction both sides of magnetic head; Be equipped with the constriction that tape one side is used restraint at this guide part one end, be in the vertical plane, plane that magnetic core gap and tape sliding contact surface join, perpendicular with the line segment of the containment surfaces that is connected described constriction, the tape sliding contact surface of described magnetic head or the spigot surface of described guide part one of them relative tape width direction at least tilt so that the containment surfaces of the restrained portion of tape one side is being pressed.
Be provided with in the magnetic band transporting system of pillar and magnetic head at picture signal record and used again rotating cylindrical body both sides, be to tape one lateral margin position constraint in addition by the pillar of both sides, and by the rotating cylindrical body guidance part to another lateral margin of tape position constraint in addition, owing to be to be pressed on the lateral margin and to another lateral margin of tape position constraint in addition by the magnetic head of being located at the pillar rear, thereby can sequentially play effect of contraction to a side and the opposite side of tape along the tape running path, so tape running stability improves.Like this, even omit the balance that the anchor post of being located at magnetic head derivation side also can keep the tape constrained in the existing device.
If in described magnetic band transporting system, also increase in described magnetic head both sides the adjustment post is set, make constrained keep balance by means of adjusting pillar constrained and magnetic head constrained, also just can keep the balance of tape constrained by this, and improve tape transport towards reverse direction.
According to magnetic head assembly of the present invention, be the tape sliding contact surface of described magnetic head or described guide part spigot surface at least one of them relative tape width direction tilt and restrained an of side of tape pressed, thereby tape is subjected to making it to sidle along tape width direction constrain portion one power of band.Thereby a side of tape is along the constriction tape transport, so tape running is stable.And, the contact pressure of tape and magnetic core is increased, thereby improve the connecting airtight property of tape and magnetic core.
And, since in the magnetic core gap with the tape sliding contact surface vertical plane, plane that joins, perpendicular with the line segment of the containment surfaces that is connected described constriction, the tape sliding contact surface of described magnetic head or the spigot surface of described guide part one of them relative tape width direction at least tilt and the containment surfaces of the restrained portion of tape one side are being pressed, thereby tape is subjected to making it to sidle along tape width direction constrain portion one power of band.Thereby a side of tape is along the containment surfaces tape transport of constriction.And, with the tape sliding contact surface vertical plane, plane that joins, be vertical in the magnetic core gap, thereby the magnetic core gap is vertical with the tape running direction during tape running, and its tape transport is stable with the line segment of the containment surfaces that is connected described constriction.And, the contact pressure of tape and magnetic core is increased, thereby improve the connecting airtight property of tape and magnetic core.
Below embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is the front elevation that the present invention's the 1st embodiment magnetic head assembly is shown.
Fig. 2 is the side view of magnetic head assembly among Fig. 1.
Fig. 3 is the vertical view of magnetic head assembly among Fig. 1.
Fig. 4 is the front elevation that the present invention's the 2nd embodiment magnetic head assembly is shown.
Fig. 5 is the oblique view that the present invention's the 3rd embodiment magnetic head assembly is shown.
Fig. 6 is the pie graph that magnetic band transporting system the 1st embodiment with magnetic head assembly of the present invention is shown.
Fig. 7 is the oblique view that is assembled in combined record the 1st configuration example in the device shown in Figure 6.
Fig. 8 is the oblique view that is assembled in combined record the 2nd configuration example in the device shown in Figure 6.
Fig. 9 is the oblique view that is assembled in combined record the 3rd configuration example in the device shown in Figure 6.
Figure 10 is the oblique view that is assembled in combined record the 4th configuration example in the device shown in Figure 6.
Figure 11 is the pie graph that magnetic band transporting system the 2nd embodiment with magnetic head assembly of the present invention is shown.
Figure 12 is the oblique view that is assembled in combined record the 1st configuration example in the device shown in Figure 11.
Figure 13 is the oblique view that is assembled in combined record the 2nd configuration example in the device shown in Figure 11.
Figure 14 is the oblique view that is assembled in combined record the 3rd configuration example in the device shown in Figure 11.
Figure 15 is the oblique view that is assembled in combined record the 4th configuration example in the device shown in Figure 12.
Figure 16 is the pie graph that magnetic band transporting system the 3rd embodiment with magnetic head assembly of the present invention is shown.
Figure 17 is the pie graph that existing device magnetic band transporting system one example is shown.
Figure 18 is the oblique view that existing combined record one configuration example is shown.
Figure 19 is the oblique view that existing combined record confined state one example is shown.
Fig. 1 to Fig. 3 is the figure that the present invention the 1st embodiment is shown, and Fig. 1 is its front elevation, and Fig. 2 is a side view, and Fig. 3 is a vertical view.
Among Fig. 1, label 101 is a pedestal, is that cutting, polishing resin etc. form.Pedestal 101 is made up of upper beam 102 and column 103a, 103b and lower beam 104, is engaged by fixed screw 105a, 105b, 105c, 105d respectively and forms one, and top and lower beam 102,104 form the guide part of guiding tape running.And sound acoustic control system magnetic head 106 and cancellation magnetic head 107 carry out after the adjustment of position combined, form combined record 108.Combined record 108 is inlaid in the embedding hole 109 of pedestal 101, is assembled in the not shown magnetic tape recorder again.
The position adjustment of pedestal 101 combined records is following carrying out.
Among Fig. 1,, projection 110 adjusts position angle, highly (relative height of pedestal and magnetic head) by rotate being adjusted screw 111a, 111b as fulcrum.Here, spring 112a, 112b are the extruded member of pushing described combined record 108 in horizontal and short transverse respectively, are to be fixed on by adjusting locational that screw 111a, 111b adjust.
Below, be to adjust the evagination (relation being arranged) and the elevation angle (angles of combined record 108 relative surface levels) at Fig. 2 with combined record 108 and pedestal 101 depth positions by adjustment hole 113a, 113b, 113c, the 1113d amount of leaving a blank of utilizing upper beam 102 and lower beam 104.
And, in Fig. 3 still by utilizing top and lower beam 102,104 and fixed screw 105a, 105b, 105c, the 105d amount of leaving a blank to adjust the relative position of guidepost 103a, 103b and combined record 108.
Carry out after the adjustment of above-mentioned position, be assemblied in the magnetic tape recorder by the fastening class methods of screw, the position adjustment does not just need when the assembling magnetic tape recorder, and does not need as the anchor post of existing example yet.And then, also can eliminate in the existing example because of anchor post and combined record 108 from locating caused problem.
The present invention the 2nd embodiment below is described.
Fig. 4 is the front view (FV) of the magnetic head assembly of the 2nd embodiment.Pedestal 101 is identical with aforementioned the 1st embodiment to be made up of upper beam 102 and guidepost 103a, 103b, 103c and lower beam 104, by holding screw 105,105b, 105c, the fixing one that forms of 105d.In the present embodiment, the embedding hole 109 of pedestal 101 is divided shown in label 109a, 109b and is opened in 2 positions, setting-in cancellation magnetic head 107 in one of them embedding hole 109 among aforementioned the 1st embodiment; Setting-in sound acoustic control system magnetic head among the 109b of another embedding hole.Be each the magnetic head method of adjustment in the present embodiment below.
At first, cancellation magnetic head 107 only in Fig. 4 direction of arrow promptly only in the above-below direction adjustment.As long as cancellation magnetic head 107 is in the correct position of the above-below direction abundant recorded information of cancellation tape just, and sound acoustic control system magnetic head then need not so high precision.Therefore be not provided with the amount of leaving a blank in the 109a of embedding hole, cancellation magnetic head 107 be entrenched among the 109a of embedding hole carry out setting-in, next usable resins is fixed, and also can adopt methods such as screw is fastening to fix.And under the occasion of necessary more precise positioning precision, also can in the 109a of embedding hole, be provided with the suitable amount of leaving a blank, and establish on the top of cancellation magnetic head 107 and to adjust screw (not shown), spring (not shown) is established in the bottom, adjusts cancellation magnetic head 107 along the vertical direction by this adjustment screw.
Below for sound acoustic control system magnetic head 106, identical with the situation of first embodiment of the invention, can by adjust screw 111a, 111b, projection 110, spring 112a, 112b carry out the position angle, highly, adjustment such as evagination, the elevation angle.
In the present embodiment, do not need to resemble and when engaging sound acoustic control system magnetic head 106, carry out accurate position adjustment existing example and the 1st embodiment, and can omit position adjustment operation with cancellation magnetic head 107.
In addition, above-mentioned the 1st embodiment and the 2nd embodiment are respectively embodiment independently, and the present invention is not aforementioned 2 devices that embodiment limited, and its formation can add various changes as required.Also have the present invention to be not limited only to the head supporting mechanism of tape recorder, for example also can be applicable in the blattnerphone.
In sum can be clear, can provide a kind of magnetic head assembly that makes tape stablize tape transport according to the present invention.
In addition, pedestal 101 may not use fixed screw 105a, 105b, 105c, 105d in the foregoing description, also can be as shown in Figure 5 by integrally formed formations such as resins.
Shown in Fig. 6 is an example of magnetic recording system (VTR) magnetic band transporting system of having assembled one embodiment of the invention, label 41 illustrates rotating cylindrical body cylindraceous among Fig. 6, the side of this rotating cylindrical body 41 is embedded with picture signal record and reproduces the magnetic head use and so on, magnetic head 42 is pressed in the side of this rotating cylindrical body 41, under the state that makes tape 42 tape transports, make simultaneously rotating cylindrical body 41 rotations, be able to carry out the read-write of picture signal by magnetic head work.
Import side (left side of rotating cylindrical body 1 among Fig. 6) at described rotating cylindrical body 41 tapes, be provided with by the driving mechanism of being located at magnetic recording system body one side and move the mobile pillar of supporting freely 43, and the tape at rotating cylindrical body 41 is derived side (right side of rotating cylindrical body 41 among Fig. 6), is provided with the mobile pillar 44 that plays with aforementioned mobile pillar 43 same functions.These move pillar the 43, the 44th, are used for from the tape cassete of accommodating tape 42 tape 42 being drawn and being pressed on the rotating cylindrical body 41.
Further on the tape path of described tape 42, be provided with in mobile pillar 43 the place aheads one side respectively and import lateral brace 45, being provided with in mobile pillar 44 rears one side derives lateral brace 46.
On the tape path of tape 42, one side is sequentially with combined record 47, capstan roller 49 and pinch roller 50 at derivation lateral brace 46 rears in addition.
And, in the aforementioned band transporting system, tape 42 will be along the groove shape guidance part 41a tape transport reliably that is formed on rotating cylindrical body 41 sides, by upper flange (position constraint member) 46a of upper flange (position constraint member) 45a of pillar 45 and pillar 46 to the upper limb of tape 42 in addition position constraint carry out the position adjustments of tape 42 upper limbs one side, the lower edge of tape 42 is pressed in reliably position constraint and the tape transport stability of improving tape 42 on the guidance part 41a of rotating cylindrical body 41.
Adopt this class to constitute, carry out position constraint along tape path alternatively up and down ground shown in Fig. 6 oblique line of tape 42 tape transport of tape 42 is stablized.
And the device that tape 42 lower edges one side is carried out position constraint is set up in being configured in of present embodiment on the combined record 47 of being located at pillar 46 rears one side, so that the tape transport of tape 42 stability improves.
Below specify this device.
Shown in Fig. 7 is the 1st configuration example of having set up the combined record of aforementioned means.This routine combined record 47 is that the combined record as shown in figure 15 that the present patent application people applied for has in the past carried out improved magnetic head partly.
In this combined record, sound sound cancellation magnetic head 52 and sound acoustic control system magnetic head 53 are magnetic heads similar with the sound sound cancellation magnetic head 12 of the combined record shown in Fig. 5 and sound acoustic control system magnetic head 13, sound sound cancellation magnetic head 52 has the sound sound cancellation magnetic core 52a of the front upper of being formed at, sound acoustic control system magnetic head 53 is the magnetic core 53a of top voice sound signal read-write usefulness in front, the magnetic core 53b of control signal read-write usefulness is arranged at the bottom in front, and, form the sliding contact surface 53c of tape 42 in the front of sound acoustic control system magnetic head 53 side at the sliding contact surface 52c of the front of sound sound cancellation magnetic head 52 shown in Figure 2 side formation tape 42.
These magnetic heads 52,53 are fixed on and comprise that the rectangle framework 55 of surrounding these magnetic heads and bottom with framework 55 form in the assembling framework 57 of base station 56 of one.
And, one side is formed with the spigot surface 62a that the tape sliding contact is used in guide stanchion 62 fronts, and above guide stanchion 62, be formed with the 1st constriction of giving prominence to prolonging flat-top 60 a part of formed spigot surface 62a the place aheads 64, below guide stanchion 62, be formed with the 2nd constriction of giving prominence to prolonging substrate 61 a part of formed spigot surface 62a the place aheads (position constraint device) 65, constitute tape guidance part 66 by the 1st constriction 64 and guide stanchion 62 and the 2nd constriction 65.And formation the 1st containment surfaces 64a below the 1st constriction 64 respectively, formation the 2nd containment surfaces 65a on the 2nd constriction 65.
And aforementioned spigot surface 62a forms vertical with respect to substrate 61, and meanwhile the bight 62b of spigot surface 62a considers that the sliding resistance of tape 42 is processed into curved surface.And the interval that relative up and down as previously mentioned constriction is 64,65 forms than the wide slightly interval of tape 42 width, and tape 42 was located in the tram when containment surfaces 65a contacted on the 2nd constriction 65,65 below the lower edge of tape 42 is followed Fig. 7.
And aforementioned sound sound cancellation magnetic head 52 and sound acoustic control system magnetic head 53 sliding contact surface 52c, the 53c separately top that makes them of leaning forward as shown in Figure 7 is more forwards more outstanding than their bottom.At this moment forward leaning angle can be arbitrarily how many degree, for example 30 minutes just enough, be the exaggeration expression in Fig. 7.
On the other hand, make flat-top 60 form the 1st location division 68 of overshooting shape below extending in the place ahead on sound acoustic control system magnetic head 53 tops between aforementioned the 1st constriction 64,64, the place ahead of sound acoustic control system magnetic head 53 bottoms between the 2nd constriction 65,65 make substrate 61 extend to above the 2nd location division 69 of formation overshooting shape.
Here, sound acoustic control system magnetic head 53 and sound sound cancellation magnetic head 52 are inserted in the assembling framework 57, and sound acoustic control system magnetic head 53 is collided with the 1st location divisions 68 and the 2nd location division 69 connect, and sound acoustic control system magnetic head 53 and assembling framework 57 are fixed by bonding agent, laser welding, electrode welding or screw are fastening etc.At this moment the adjustment at pitch angle can be bumped the face of connecing (not shown) and be determined the position by the magnetic head that changes location division 68,69 respectively.
In addition, the sound sound cancellation magnetic head 12 of framework 55 can correctly be carried out when combined record 47 is made by automaton with the assembling work of sound acoustic control system magnetic head 13 relatively.
Below the combined record 47 that constitutes as mentioned above is assemblied in situation in the magnetic recording system, explain with the situation of assembling back tape 42 relative combined record 47 sliding contacts.
The combined record 47 of Gou Chenging is by making many foundation fiducial axis of erectting on the magnetic recording system base plate connect the through hole 56a of base station 56 respectively and carrying out the fastening class methods of screw and correctly be fixed on assigned position on the magnetic recording system base plate as mentioned above.
And, if adopt the formation of aforesaid combined record 47, make tape 42 while being pressed in tape transport on the rotating cylindrical body 41, just can be shown in Fig. 1 oblique line, carry out the position constraint of tape upper limb by pillar 45 and pillar 46, and carry out the position constraint of tape 42 lower edges by rotating cylindrical body 41 and combined record 47.
Promptly when the combined record 47 that tape 42 is constituted relatively as mentioned above slides, because when tape 42 slides along spigot surface 62a, 62a, slipping plane 53c slip along slipping plane 52c and the sound acoustic control system magnetic head 53 of the sound sound cancellation magnetic head 52 of the attitude that leans forward, thereby the result is that tape 42 is being pressed movably by its lower edge, and the containment surfaces 65a that the lower edge of tape 42 simultaneously is pressed in the 2nd constriction 65,65 goes up one side and slides.The lower edge that is tape 42 is subjected to position constraint.
Be can be for tape 42 for this reason, thereby tape 42 correctly locate and tape 42 tape transports are stablized by pillar shown in Figure 6 45 and rotating cylindrical body 41 and pillar 46 and containment surfaces 65a shown in Figure 7 along tape 42 tape paths position constraint in addition sequentially up and down.And, by containment surfaces 65a to the lower edge of tape 42 in addition position constraint itself just can, correctly carry out particularly short transverse of tape 42() the location, can stablize tape transport.Make the contact pressure reinforcement of tape 42 and magnetic core 53a, 53b in addition, can improve the connecting airtight property of tape and magnetic core.
In addition, when tape 42 has up down departed from aforementioned each constrained, just be subjected to tension force effect separately with bead 45a, 46a, guidance part 41a, the contacted tape of the 2nd containment surfaces 65a 42 edges, and the extruding constrained edge makes tape 42 remain on the specified altitude position by this extruding constraining force.
On the other hand, the combined record 47 of formation shown in Figure 7 is also brought into play the effect of following explanation.
At first, in the magnetic gap of sound acoustic control system magnetic head 53 magnetic core 53a,, perpendicular with the line segment of the containment surfaces 65a, the 65a that connect magnetic head both sides the 2nd constriction 65,65 with the vertical plane, plane that sliding contact surface 53c joins.Therefore the lower edge of tape 42 is along containment surfaces 65a tape transport, and tape running is to make the magnetic gap of tape 53a and tape 42 tape transport directions perpendicular, thereby the tape transport of tape 42 is very stable, and the position angle is a best angle.
And, when mount sound sound cancellation magnetic head 52 is with sound acoustic control system magnetic head 53 in the framework 55 of assembling framework 57 if assemble at the strict regulations position angle in advance, azimuthal adjusting is carried out with regard to not needing after being assembled to magnetic recording system, because best angle when the position angle is magnetic recording and reproducing, thereby about the cancellation of audio signal and the magnetic characteristic that writes and the read raising of control signal.Therefore, combined record 47 is assembled to magnetic recording system and just need not carries out azimuthal inching afterwards.
And, for the inclination angle, be with the angle initialization of each slipping plane 52c, the 53c of relative tape 42 Widths for certain predetermined certain value (for the lower edge of tape 42 containment surfaces 65a tape transport along constriction 65, set a sufficient angle), make it to tilt, thereby combined record 47 is just established necessary adjusting inclination angle after being assembled to magnetic recording system.
In sum, combined record 47 is assembled to after the magnetic recording system, and that just azimuth adjustment, tilt adjustment and tape height can be regulated anyly all omitting, and just can make the inching operation laborsaving when combined record 47 is assembled to magnetic recording system.
Shown in Fig. 8 is tape 42 band transporting systems shown in Figure 6, shows combined record the 2nd configuration example that is located at pillar 46 rears one side.In the 2nd configuration example combined record 70, give same numeral for the composition identical, and omit these explanations with aforementioned the 1st configuration example combined record 47.
In this routine combined record 70, the spigot surface 62d that guidepost 62 is formed on tape 42 tape transports one side forms its top and compares the attitude that leans forward of swinging to the place ahead with the bottom, and sound sound cancellation magnetic head 52 slipping plane 52c and sound acoustic control system magnetic head 53 slipping plane 53c constitute towards the vertical direction of relative substrate 61.
By adopting structure shown in Figure 8 just can give tape 42 downward power, can be pressed in the enterprising line position constraint of the 2nd containment surfaces 65a, 65a by lower edge with tape 42 by spigot surface 62d, 62d for the tape in the tape transport 42.In addition, in this example, sound sound cancellation magnetic head 52 slipping plane 52c and sound acoustic control system magnetic head 53 slipping plane 53c are towards the direction vertical with substrate, thereby can not give extra power on tape 42 above-below directions.
In addition, then can obtain and the identical effect of aforementioned the 1st configuration example device for other effects.
Shown in Fig. 9 is combined record the 3rd configuration example of being located at pillar 46 rears one side in tape shown in Figure 6 42 band transporting systems.In the combined record 75 of the 3rd configuration example for combined record 47 same compositions of aforementioned the 1st configuration example, the explanation that gives same numeral and omit these parts.
In this routine combined record 75, the spigot surface 62d that guidepost 62 is formed at tape 42 tape paths one side forms its top and compares with the bottom and swing to the more attitude that leans forward in the place ahead, and sound sound cancellation magnetic head 52 slipping plane 52c and sound acoustic control system magnetic head 53 slipping plane 53c form any of these top and compare with these bottoms and swing to the more attitude that leans forward in the place ahead.
And, slipping plane 52c, 53c and spigot surface 62d, the 62d of each magnetic head 52,53 lean forward when being provided with, contact fully in order to make each slipping plane 52c, 53c for tape 42, wish to make the forward leaning angle of each slipping plane 52c, 53c bigger than the forward leaning angle of each spigot surface 62d, 62d.
By adopting structure shown in Figure 9, can give tape 42 downward power by spigot surface 62d, 62d and slipping plane 52c, 53c for the tape in the tape transport 42, can be pressed in by lower edge on the 2nd containment surfaces 65a, the 65a and carry out position constraint reliably tape 42.
In addition, then can obtain device same effect with aforementioned the 1st configuration example about other effects.
Shown in Figure 10 is in tape 42 band transporting systems shown in Figure 6, is located at combined record the 4th configuration example of pillar 46 rears one side.In the combined record 75 of the 4th configuration example, for aforementioned the 1st configuration example combined record 47 same compositions, the explanation that gives same label and omit these parts.
In this routine combined record 80, the spigot surface 62e that guidepost 62 is formed at tape 42 tape transports one side is towards the vertical direction of relative substrate 61, and sound sound cancellation magnetic head 52 slipping plane 52c constitute towards relative substrate 61 vertical direction with sound acoustic control system magnetic head 53 slipping plane 53c.And the top of spigot surface 62e is formed with the compressive plane 62f of inclination.
By adopting structure shown in Figure 10, each guide stanchion 62,62 compressive plane 62f contacts with tape 42 in the tape transport and to tape 42 additional downward power, thereby the lower edge that can make tape 42 and the 2nd containment surfaces 65a, 65a contacts and position constraint in addition reliably.
In addition, then can obtain device same effect with aforementioned the 1st configuration example for other effects.
Shown in Figure 11 is another example of magnetic band transporting system of the magnetic recording system (VTR) of assembling another embodiment of the present invention, label 41 illustrates cylindric rotational circle cylindrical shell among Figure 11, around this rotational circle cylindrical shell 41, identical with band transporting system shown in Figure 6, be provided with mobile pillar 43,44 and pillar 45,46, and be sequentially with combined record 90 and capstan roller 49 and pinch roller 50 along tape 42 tape paths.And in the present embodiment, between combined record 90 and pillar 46, be provided with the 1st and adjust pillar 88, between combined record 90 and capstan roller 49, be provided with the 2nd and adjust pillar 89.
And, the bottom of aforementioned each pillar 88,89 can be formed with bead (position constraint member) 88a, 89a respectively, can use restraint to tape 42 lower edge positions to become, and on combined record 90, set up device the stablizing that tape 42 upper limbs one side is carried out position constraint with expectation tape 42 tape transports.
In the present embodiment promptly, shown in Figure 11 oblique line, retrain by the acting device of the position constraint member of pillar 45,46 and combined record 90 upper limb tape 42, and retrain with the lower edge of adjusting 88,89 pairs of tapes 42 of pillar by the guidance part 41a of rotating cylindrical body 41, make the tape transport of tape 42 stable.
Below specifically describe the device that carries out tape 42 position constraints in this example.
Shown in Figure 12 is in tape 42 band transporting systems shown in Figure 11, is located at combined record the 1st configuration example of adjusting pillar 88 rears one side.In the 1st configuration example combined record 90 of this band transporting system, give same numeral, omit these explanations for former the 1st configuration example combined record 47 same compositions that illustrated shown in Fig. 7.
In this routine combined record 90, sound sound cancellation magnetic head 52 slipping plane 52c tilt more to project to the state of the place ahead (tape 42 tape paths one side) than these tops for these bottoms with sound acoustic control system magnetic head 53 slipping plane 53c.Other are formed, and then the combined record 47 with shown in Figure 2 is identical.
By adopting structure shown in Figure 12,, can the upper limb of tape 42 be pressed in the 1st containment surfaces 64a, 64a by the additional power that makes progress to tape 42 of the slipping plane 52c, the 53c that tilt, thereby the upper limb of tape 42 is carried out position constraint for the tape in the tape transport 42.So the 1st constriction 64,64 constitutes the position constraint device in this embodiment.
In addition, then can obtain the same effect of the 1st configuration example device shown in Figure 7 for other effects.
Shown in Figure 13 is to be located at combined record the 2nd configuration example of adjusting pillar 88 rears one side in tape 42 band transporting systems shown in Figure 11.In the combined record 91 of this band transporting system the 2nd configuration example, the same composition for the 2nd configuration example combined record 70 that has illustrated in the past shown in Fig. 8 gives identical label and omits these explanations.
In this routine combined record 91, the spigot surface 62g that guidepost 62 is formed at tape 42 tape transports one side forms its underpart and is projected into the lateral attitude of the place ahead (tape 42 tape paths one side) than its top, and meanwhile the slipping plane 53c of sound sound cancellation magnetic head 52 slipping plane 52c and sound acoustic control system magnetic head 53 constitutes towards substrate 61 perpendicular directions.
By adopting structure shown in Figure 13, can give the power that tape 42 makes progress by spigot surface 62g, 62g for the tape in the traveling 42, be pressed in by upper limb that the 1st containment surfaces 64a, 64a are last to carry out position constraint to the upper limb of tape 42 with tape 42.In addition, in this example, sound sound cancellation magnetic head 52 slipping plane 52c and sound acoustic control system magnetic head 53 slipping plane 53c are perpendicular with substrate 61, thereby can not bring power extra on the above-below direction to tape 42.
In addition, then can obtain same effect with aforementioned the 1st configuration example device for other effects.
Shown in Figure 14 is to be located at combined record the 3rd configuration example of adjusting pillar 88 rears one side in tape 42 band transporting systems shown in Figure 11.In the 3rd configuration example combined record 92 of this band transporting system, for shown in Fig. 9 before the same composition of band transporting system the 3rd configuration example combined record 75 that illustrated, the explanation that gives same numeral and omit these parts.
In this routine combined record 92, the spigot surface 62h that guide stanchion 62 is formed at tape 42 tape transports one side forms and its underpart is compared with its top more project to the attitude that the place ahead one side (tape 42 tape paths one side) tilts, and sound sound cancellation magnetic head 52 slipping plane 52c sound acoustic control system magnetic heads 53 slipping plane 53c all form and make its underpart be projected into the attitude of tape 42 tape path lopsidedness.
And, when each magnetic head 52,53 slipping plane 52c, 53c and spigot surface 62h, 62h are obliquely installed, for each slipping plane 52c, 53c are contacted fully with respect to tape 42, wish to make the angle of inclination of each slipping plane 52c, 53c bigger than the angle of inclination of each spigot surface 62h, 62h.
By adopting structure shown in Figure 14, can add power upwards to tape 42 by spigot surface 62h, 62h and slipping plane 52c, 53c for the tape in the tape transport 42, be pressed in the last reliable position of carrying out of the 1st containment surfaces 64a, 64a by upper limb and retrain tape 42.
In addition, then can obtain and the identical effect of aforementioned the 1st configuration example device for other effects.
Shown in Figure 15 is to be located at combined record the 4th configuration example of adjusting pillar 88 rears one side in tape 42 band transporting systems shown in Figure 11.In the combined record 93 of this band transporting system the 4th configuration example, for shown in Figure 10 before the explanation that gives same-sign and omit these parts of the identical composition of the band transporting system that illustrated the 4th configuration example combined record 80.
In this routine combined record 93, the spigot surface 62i that guide stanchion 62 is formed at tape 42 tape transports one side towards with the perpendicular direction of substrate 61, and sound sound cancellation magnetic head 52 sliding contact surface 52c and sound acoustic control system magnetic head 53 sliding contact surface 53c are all towards constituting with the perpendicular direction of substrate 61.And be formed with the compressive plane 62j of inclination in the bottom of spigot surface 62i.
Adopt structure shown in Figure 15, compressive plane 62j, 62j contact with tape 42 in the tape transport to tape 42 additional power upwards, thereby the upper limb of tape 42 is contacted with the 1st containment surfaces 64a, 64a, and can carry out position constraint reliably.
In addition, then can obtain and the identical effect of aforementioned the 1st configuration example device for other effects.
Shown in Figure 16 is the magnetic band transporting system example of the magnetic recording system (VTR) of the another embodiment of assembling apparatus of the present invention, among Figure 16, label 41 illustrates cylindric rotating cylindrical body, around this rotating cylindrical body 41, with the identical mobile pillar 43,44 and the pillar 45,46 of being provided with of example of band transporting system shown in Figure 11, and walk to lead the way through being sequentially with combined record 90 and capstan roller 49 and pinch roller 50 along tape 42.And, omit the 1st between combined record 90 and the pillar 46 in the present embodiment and adjust pillar 88, adjust pillar 89 and only between combined record 90 and capstan roller 49, be provided with the 2nd.
And, only adjust pillar 89 lower ends and be formed with bead (position constraint member) 89a respectively the aforementioned the 2nd, make and can the lower edge position of tape 42 be used restraint, and on combined record 95, add device the stablizing that tape 42 upper limbs is carried out position constraint with expectation tape 42 tape transports.
Be in the present embodiment, shown in Figure 16 oblique line, by the bead 46a of pillar 45 lip portions 45a and pillar 46 and the extruding restraint device of combined record 90, upper limb to tape 42 retrains, and the guidance part 41a that relies on rotating cylindrical body 41 and the bead 89a that adjusts pillar 89 use restraint to the lower edge of tape 42 and make tape running stable.
Used magnetic head 95 in this band transporting system, used combined record 90,91,92,93 in the band transporting system before better being suitable for.But the upper limb by 46 pairs of tapes 42 of pillar retrains, and then the upper limb by 95 pairs of tapes 42 of combined record uses restraint, thereby wishes the make a concerted effort design and the 2nd adjustment pillar 89 balances of these constraining forces.For this reason, as make the inclined degree ratio of combined record 95 each several parts little, and the 2nd constraining force of adjusting pillar 89 has been strengthened just with preceding example.
Can make the tape transport of tape 42 stable by such adjustment constraining force.
Here among aforementioned each embodiment, be provided with tape guidance part 66,66 along tape 42 tape paths in the both sides of each magnetic head 52,53, tape guidance part 66 can be located at any one side of magnetic head 52,53 both sides.And the adjustment pillar is set in the combined record both sides, one side do not hinder to any.
And, be that sound sound cancellation magnetic head 53 and sound acoustic control system magnetic head 53 are assemblied in the assembling framework 57 in the previous embodiment, certainly the device after integrated is fixed in the assembling framework 57 with sound sound cancellation magnetic head 53 and sound acoustic control system magnetic head 53.And in the aforementioned embodiment, employing be the composition that tape guidance part 66 and assembling framework 57 are one, these can be integrally formed, and adopt also not hindering of split.And it is also passable as existing example the magnetic head targeting part to be set on mounting plate.
In addition, be that the formation of pushing down upper limb and lower edge along tape 42 tape paths is respectively described in aforementioned each embodiment, but, upper limb according to tape 42 tape transport direction tapes 42 becomes opposite with the upper and lower relation of lower edge, and close direction of insertion and be the magnetic recording system that makes the formation that tape 42 moves along the vertical direction corresponding to tape, the upper limb of tape 42 and lower edge then become right border and left border, or left border and right border.
And, the 1st constriction 64 and the 2nd constriction 65 can be only in that side of extruding tape 42 1 sides, thereby also can only be any side.
And in the foregoing description, be to describe with the related example of magnetic head assembly for VTR sound sound, certain formation of the present invention also can be widely used in having makes tape make the general magnetic head assemblies such as magnetic recording system of tape clutch sliding type with respect to the audio frequency that magnetic head clutch slip constitutes with cassette recorder or other.
In sum, according to the present invention, be provided with in the magnetic band transporting system of pillar and magnetic head with the rotating cylindrical body both sides at picture signal record or reproduction, by two lateral braces to tape one lateral margin in addition position constraint and by the guidance part of rotating cylindrical body to another lateral margin of tape device of position constraint in addition, be to another lateral margin of tape position constraint in addition by the magnetic head of being located at the pillar rear, thereby can make the extruding constraining force sequentially act on a side and the opposite side of tape, it is stable therefore can to improve tape running.And like this, also can keep the balance of tape constrained even omit the anchor post of being located at the magnetic head rear in the past, thereby have and can reduce components number, with than the more low-cost effect that obtains it of device in the past.
And, be provided with in the magnetic band transporting system of pillar and magnetic head at picture signal record or used again rotating cylindrical both sides, by two lateral braces to tape one lateral margin in addition position constraint and by the rotating cylindrical body guidance part to another lateral margin of tape device of position constraint in addition, if at least one side in magnetic head both sides is provided with the adjustment pillar, and the position constraint of extruding constraining force that make to adjust the constrained of position constraint parts of pillar and magnetic head is towards relative direction and reach balance, therefore also just can keep the balance of tape constrained, so can improve the tape transport stability of tape.
And, be in the magnetic core gap and the tape sliding contact surface vertical plane, plane that joins, line segment with the containment surfaces that connects aforementioned constraint portion is perpendicular, one of them tilts to make a side pressure of tape on the containment surfaces of constriction with respect to the tape width direction at least for the tape sliding contact surface of aforementioned magnetic head or the spigot surface of aforementioned guide part, is subjected to making it to sidle along the constriction one of tape width direction the power of band on the tape.Thereby a side of tape is along the containment surfaces tape transport of constriction.And be in the magnetic core gap, the vertical plane, plane that joins with the tape sliding contact surface, perpendicular with the line segment that connects a pair of constriction containment surfaces clamp magnetic head, thereby gap and the tape running direction of magnetic core is perpendicular during tape running, and its tape transport is stablized.And because the position angle is a best angle when magnetic recording and reproducing, thereby has improved relevant audio signal and write the magnetic characteristic of reading.And the pitch angle with tape sliding contact surface or spigot surface at least the angle initialization of one of them relative tape width direction be predetermined value, make it, thereby need not regulate the pitch angle.And the tape sliding contact surface of combined record or spigot surface one of them relative tape width direction at least tilt, thereby tape one side is crushed on the containment surfaces of constriction.Thereby the tape transport height of tape is normally constant, thereby the tape transport height of the relative tape of magnetic head also need not to regulate.So can not carry out position angle adjustment, inclination angle adjustment and height control just can be assembled to magnetic head assembly in the magnetic recording system body.
And, the contact pressure of tape and magnetic core is increased, can improve the connecting airtight property of tape and magnetic core.
Claims (5)
1, a kind of magnetic band transporting system is used for the record or the reproduction of picture signal, comprising: the rotating cylindrical body that is used to import tape; The tape of being located at rotating cylindrical body imports the importing lateral brace of side directed tape; The tape of being located at rotating cylindrical body is derived the derivation lateral brace of side directed tape; The derivation side of being located at this derivation lateral brace is carried out the magnetic head that the signal with respect to tape writes or reads, and it is characterized in that, is formed with on described importing lateral brace a lateral margin of the tape width direction position constraint member of position constraint in addition; On described rotating cylindrical body, be formed with another lateral margin of described tape width direction guide portion of position constraint in addition; Go out on the lateral brace to form to a lateral margin of the tape width direction position constraint member of position constraint in addition at described conductor; Meanwhile on described magnetic head, set up another lateral margin of described tape width direction position constraint member of position constraint in addition.
2, a kind of magnetic band transporting system is used for the record or the reproduction of picture signal, comprising: the rotating cylindrical body that is used to import tape; The tape of being located at rotating cylindrical body imports the importing lateral brace of side directed tape; Be located at the derivation lateral brace of the side directed tape of derivation of rotating cylindrical body; The derivation side of being located at this derivation lateral brace is carried out the magnetic head that the signal with respect to tape writes or reads, it is characterized in that, import side and derive one of them side setting adjustment pillar of side at described magnetic head, and be formed with a lateral margin of the tape width direction position constraint member of position constraint in addition at described importing lateral brace, on aforementioned rotating cylindrical body, be formed with another lateral margin of described tape width direction guide portion of position constraint in addition, on described derivation lateral brace, be formed with a lateral margin of the tape width direction position constraint member of position constraint in addition, and on described magnetic head, set up a lateral margin of the described tape width direction position constraint member of position constraint in addition, on described adjustment pillar, be formed with on the other hand another lateral margin of described tape width direction position constraint member of position constraint in addition.
3, a kind of magnetic head assembly, it is characterized in that, it is the device that keeps magnetic head guiding tape running, form the shaped as frame pedestal by a plurality of columns of configuration parallel to each other and the pair of beams that is fixed on these column two ends by fixed screw respectively, at the described magnetic head of the inner maintenance of described shaped as frame pedestal, on described pair of beams, be formed with the guide part that guides described tape both side edges respectively.
4, a kind of magnetic head assembly comprises: at the guide part of at least one side directed tape of tape running direction of magnetic head; To the tape one side constriction of position constraint in addition, the spigot surface that it is characterized in that the tape sliding contact surface of described magnetic head or described guide part one of them relative tape width direction at least tilts to make restrained an of side of tape press at an end of this guide part.
5, magnetic head assembly as claimed in claim 4 is characterized in that comprising: at the guide part of the tape running direction two side directed tapes of magnetic head; The constriction that one side of tape is used restraint at an end of this guide part, be in the magnetic core gap, perpendicular with the line segment that is connected aforementioned constraint portion containment surfaces with the tape sliding contact surface vertical plane, plane that joins, the tape sliding contact surface of described magnetic head or described spigot surface one of them relative tape width direction inclination at least make the containment surfaces of the restrained portion of a side of tape press.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4038165A JP2831508B2 (en) | 1992-02-25 | 1992-02-25 | Magnetic head device |
| JP38165/1992 | 1992-02-25 | ||
| JP38165/92 | 1992-02-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1076805A true CN1076805A (en) | 1993-09-29 |
| CN1058351C CN1058351C (en) | 2000-11-08 |
Family
ID=12517790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93102186A Expired - Fee Related CN1058351C (en) | 1992-02-25 | 1993-02-25 | Magnetic band transporting system and magnetic head |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2831508B2 (en) |
| CN (1) | CN1058351C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100412939B1 (en) * | 2000-12-11 | 2003-12-31 | 엘지전자 주식회사 | A full eraser head assembly for VCR |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58140514U (en) * | 1982-03-10 | 1983-09-21 | 株式会社日立製作所 | Tape position regulating device |
| JPS61260458A (en) * | 1985-05-14 | 1986-11-18 | Sharp Corp | Tape traveling device for magnetic recording and reproducing system |
| JPH0760544B2 (en) * | 1985-07-17 | 1995-06-28 | ソニー株式会社 | Tape guide mechanism for recording / reproducing apparatus |
| JPH02149139U (en) * | 1989-05-19 | 1990-12-19 | ||
| JPH04216354A (en) * | 1990-02-16 | 1992-08-06 | Pioneer Electron Corp | Magnetic head device |
-
1992
- 1992-02-25 JP JP4038165A patent/JP2831508B2/en not_active Expired - Fee Related
-
1993
- 1993-02-25 CN CN93102186A patent/CN1058351C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2831508B2 (en) | 1998-12-02 |
| CN1058351C (en) | 2000-11-08 |
| JPH0620349A (en) | 1994-01-28 |
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Granted publication date: 20001108 Termination date: 20110225 |