CN1132387A - Magnetic head and its mfg. method - Google Patents
Magnetic head and its mfg. method Download PDFInfo
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- CN1132387A CN1132387A CN 95120441 CN95120441A CN1132387A CN 1132387 A CN1132387 A CN 1132387A CN 95120441 CN95120441 CN 95120441 CN 95120441 A CN95120441 A CN 95120441A CN 1132387 A CN1132387 A CN 1132387A
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Abstract
The purpose of the present invention is to make it possible to position a core with high accuracy to a holder in a shielding case of an audio magnetic head. A pair of holder half bodies which are symmetric with respect to an O-O plane are held in the shielding case. Positioning parts of core half bodies are butted against the bases of holding grooves of these holder half bodies, by which the core half bodies are positioned in an X direction relative to the holder half bodies . Recessed parts are formed on the core half bodies and butt parts facing the inside of the shielding case are formed in these recessed parts. The holder half bodies are provided with projecting parts and the sides facing the sliding faces of the projecting parts are formed as butt parts. These butt parts are butted against the butt parts, by which the core half bodies are positioned in a Y1-Y2 direction with high accuracy with respect to the holder half bodies.
Description
The present invention relates to be provided with deck, magnetic core and seal pad and remain on magnetic head on this deck in seal box, particularly magnetic core or magnetic core and seal pad can be with respect to the magnetic head and the manufacture methods thereof of deck hi-Fix.
That Fig. 8 represents is of the prior art, be used for magnetic head half sectional drawing that stereo magnetic tape cassette is broadcasted machine.
Among the figure, the seal box that 1 expression is made with Fe-Ni-Mo alloy etc.Fixing tape guide 2 in the side of seal box 1.Fig. 8 represents the magnetic head that just has been assembled into, and after assembling was over, the front of seal box 1 was ground into the face shown in dot-and-dash line, and this polished face is the slipping plane 1a of recording medium (tape).
In the inside of seal box 1, with median plane O-O for disposing half deck 3 symmetrically.This half deck 3 is that zinc is cast into.Half magnetic core 4 and sealing half plate (figure does not show) remain on this half deck 3.Usually, half magnetic core 4 is that seal pad is to be made by the Fe-Ni-Mo alloy with stacked laminates that forms such as Fe-Ni-Nb alloy sheets.At the base portion of magnetic core 4, the bobbin 5 that is wound with coil 6 is installed.
In the assembling procedure of magnetic head, in the maintenance groove on half magnetic core 4 and sealing half plate insertion one and half decks 3, at this moment, half magnetic core 4 and sealing half plate are located in the Y1-Y2 direction with respect to half deck 3 with anchor clamps.Behind the location, half magnetic core 4 and sealing half plate are adhesively fixed on half deck 3 with resin.Half deck 3, half magnetic core 4 with after sealing half plate and combining, be to grind on the median plane O-O on the composition surface, O-O engages this subassembly with nonmagnetic substances such as titaniums at median plane, forms magnetic gap between half magnetic core 4 vis-a-vis.When this engaged, the base portion of magnetic core 4 was installed with bobbin 5.
At a couple half deck 3, half magnetic core 4, sealing half plate and the bobbin 5 that median plane has been bonded with each other, insert in the seal box 1 and be positioned, fix with resin.Then, the front of seal box 1 is ground, and forms slipping plane 1a.
In magnetic head shown in Figure 8, when the slipping plane 1a that dot-and-dash line is represented was ground, magnetic gap degree of depth Gd set by the remainder size of magnetic core 4, and this magnetic gap degree of depth Gd has a significant impact characteristic of magnetic head.Therefore, must control this size Gd accurately.
For can make deck 3 in seal box 1 along Y1-Y2 direction hi-Fix, half magnetic core 4 with respect to deck 3 at Y1-Y2 direction hi-Fix, be the condition of setting magnetic gap degree of depth Gd accurately.
When making half magnetic core 4 and sealing half plate with respect to half deck, 3 location with anchor clamps, its flow chart is more numerous and diverse but in the prior art.Especially in the magnetic head that stereo receiver is used, seal half plate, each half magnetic core and each are sealed half plate all will carry out high-precision location, need skilled operation owing to established 4 group of half magnetic core, 3 groups.
The present invention makes in view of the above problems, and as long as it is a kind of to magnetic core or magnetic core and seal pad applied thrust that its purpose is to provide, just can be magnetic core or magnetic core and the seal pad magnetic head with respect to the deck hi-Fix.
The present invention also aims to, when being provided as the recess of location division on magnetic core, this recess does not have harmful effect to characteristic of magnetic head.
The present invention also aims to provide a kind of a kind of manufacture method of magnetic head, use this method, need not, just can under state, assemble magnetic core and seal pad with respect to the deck hi-Fix from outside applied thrust.
To achieve these goals, in the magnetic head of the present invention, deck is located in the seal box, magnetic core and seal pad remain on this deck, and coil is contained in outward on the above-mentioned magnetic core, it is characterized in that, on above-mentioned deck and magnetic core, be provided with the location division of magnetic core in magnetic gap depth direction location.
In addition, in the magnetic head of the present invention, deck is located in the seal box, magnetic core and seal pad remain on this deck, and coil is contained in outward on the above-mentioned magnetic core, it is characterized in that, on above-mentioned deck and magnetic core and deck and seal pad, be provided with magnetic core and seal pad location division magnetic gap depth direction location.
In above-mentioned deck, the location division of magnetic core and seal pad the location division can be formed on the one side on.
In addition, be preferably in and form recess on the magnetic core, this recess by the limit of slipping plane one side as the location division, the total length of establishing magnetic core is L, is 0.3L more than by the limit of slipping plane one side to the distance of location division from magnetic core then.
Magnetic head manufacturing method of the present invention, in this magnetic head, deck is located in the seal box, magnetic core and seal pad remain on this deck, coil is contained in outward on the above-mentioned magnetic core, it is characterized in that, forms the location division towards slipping plane one side on deck, on magnetic core and seal pad, form the location division of side in deck, magnetic core and seal pad located with respect to deck in order to following method:
1. when being assembled into magnetic core and seal pad on the deck, magnetic core and seal pad are in contact with one another slipping plane one side, side's one side disposes with being separated from each other in deck;
2. utilize on magnetic core and seal pad the power of side in deck that contacts because of above-mentioned that counter-force produces, magnetic core and seal pad the location division prop up the location division of deck, magnetic core and seal pad are located on deck.
In above-mentioned manufacture method, magnetic core and seal pad and deck are contained in the seal box, be fixed on deck on the seal box after, the slipping plane of grinding-in box, remove magnetic core and seal pad part or all of above-mentioned contact site.
Among the present invention, between magnetic core or magnetic core and seal pad and deck, be provided with the location division, by positioning, can locate with respect to deck magnetic core or magnetic core and seal pad at magnetic gap depth direction (Y1-Y2 direction) with this location division.
In addition, if on the same one side of deck, be provided with respect to the location division of magnetic core and with respect to seal pad the location division, then several magnetic cores and seal pad are relatively by hi-Fix, the manufacturing of deck is also easy.
The structure of above-mentioned location division can be to be provided with on magnetic core and seal pad to the outstanding teat in side, locatees with this teat butt deck.Otherwise, also can be magnetic core and seal pad sidepiece recess is set, on deck, form the teat enter this recess, the mutual butt in limit of the limit of recess and teat is located.
As mentioned above, when forming the recess as the location division on magnetic core, the position of this recess may influence magnetic properties.A factor that influences magnetic properties is the fluctuating of broadcasting output that contour effects causes, for the fluctuating of broadcasting output that suppresses to greatest extent to cause because of contour effects, when if the total length of magnetic core is L, then slipping plane one side end that leans on from magnetic core preferably being set at more than the 0.3L to the distance of the location division (edge by slipping plane one side of recess) of recess.In order not influence the magnetic flux density of passing magnetic core, must make the basal area of the magnetic core that recess partly locates long-pending greater than the minimum cross section of the magnetic core at other parts place.
Among the present invention, during assembling, magnetic core is located at the magnetic gap depth direction accurately with respect to deck, so magnetic core and seal pad are ground together with seal box, when being formed with the face of recording medium sliding contact, can set the magnetic gap degree of depth Gd of magnetic core accurately.
In addition, when being assembled into magnetic core and seal pad on the deck, from the outside to magnetic core and seal pad applied thrust, on one side position with above-mentioned location division, one side is bonded in magnetic core and seal pad on the deck with resin, has just finished high-precision assembling.That is, need not to adopt the anchor clamps of complex structure, as long as it is bonding on one side magnetic core and seal pad to be pushed away one side toward a direction (Y1 direction or Y2 direction), by this simple operation, just can magnetic core and seal pad with respect to the deck hi-Fix assemble.
In the magnetic head manufacturing method of the present invention, need not, just can locate magnetic core and seal pad accurately with respect to deck from outside applied thrust.
That is, several magnetic cores and seal pad are made they be in contact with one another in slipping plane one side, side's one side disposes with being separated from each other in deck.For example, several magnetic cores and seal pad are configured to the Ha font,, it are suppressed each other, leave in the maintenance groove that is inlaid in slightly with gap on the deck by big to a certain degree power in slipping plane one side.Since the magnetic core of slipping plane one side and seal pad contact or crimping, effect has bending stress on magnetic core and seal pad, in the time of on being assembled in deck, under the counter-force effect of this bending stress, magnetic core produces the power of separating with seal pad contact site, makes magnetic core and seal pad produce the recuperability of side in deck.Magnetic core and seal pad this recuperability, deck and seal pad are located with respect to deck.Therefore, when being assembled into magnetic core and seal pad on the deck, magnetic core and seal pad are located at magnetic gap depth direction (Y1 direction) accurately with respect to deck.
Because magnetic core and seal pad are located naturally with respect to deck, so, need not with anchor clamps etc. magnetic core and seal pad applied thrust, available simple operation realizes high-precision location.Behind the location, with resin magnetic core and seal pad are fixed on the deck, this subassembly that has fixed is assembled in the seal box, fix with resin again.At this state, magnetic core and seal pad are fixed on the deck.Therefore, when forming slipping plane in the front of grinding-in box, magnetic core and seal pad part or all of above-mentioned contact site or pressure contact portion can be removed.
Fig. 1 is a sectional drawing of representing magnetic head of the present invention from slipping plane one side.
Fig. 2 is half sectional drawing of the II-II line section of Fig. 1.
Fig. 3 is half sectional drawing of the III-III line section of Fig. 1.
Fig. 4 is the partial enlarged drawing of Fig. 2.
Fig. 5 is the exploded perspective view of expression operation when being assembled on half deck with half magnetic core and sealing half plate.
Fig. 6 be the VI of Fig. 2 to side view, that expression is seen from median plane O-O direction, half magnetic core and seal half plate and be assembled into state on half deck.
Fig. 7 is the position, location division of expression magnetic core and the graph of a relation of contour effects.
Fig. 8 is half sectional drawing of prior art magnetic head.
Below, embodiments of the invention are described.
Fig. 1 represents an embodiment of magnetic head of the present invention, is the sectional drawing from seeing with the face direction of recording medium sliding contact.Fig. 2 is half sectional drawing of the II-II line section of Fig. 1.Fig. 3 is half sectional drawing of the III-III line section of Fig. 1.Fig. 4 is the partial enlarged drawing of Fig. 2.Fig. 5 represents an operation of magnetic head manufacturing method of the present invention, and expression is assembled into half magnetic core and sealing half plate the exploded perspective view of half deck state.Fig. 6 be the VI of Fig. 2 to side view, represent that half magnetic core and sealing half plate have been assembled into the state on half deck.
The seal box 1 usefulness Fe-Ni-Mo class alloy of magnetic head is made, and in the two sides towards the tape direction of travel of seal box 1, is fixing tape guide 2,2.As shown in Figure 2, after the magnetic head assembling, the face that the front of seal box 1 is represented by dot-and-dash line grinds, and formation is the slipping plane 1a of tape sliding contact with recording medium.
As shown in Figure 1, in seal box 1, inserting a pair of half deck 10,10 of holding median plane O-O under the arm and facing title mutually.Half and half deck 10,10 is being kept by the metal fittings 8,8 of leaf spring material under the state of assembling that is bonded with each other.
Half deck of assembling mutually 10,10 is being fixed with resin in seal box 1.When carrying out this assembling operation, half deck 10,10 is fixing in back, the degree of depth Gd of magnetic gap direction (Y1-Y2 direction) location with respect to seal box 1.
One side, half deck 10 has been shown among Fig. 5, its side facing to median plane O-O has been represented up.The for example available zinc die casting of half deck 10 forms.
On half deck 10, form 4 maintaining part C that are used to keep half magnetic core; Form a maintaining part S1 who is used to keep central authorities' sealing half plate; Form 2 maintaining part S2 that are used to keep side seal half plate.
On each maintaining part C of half magnetic core, be formed for keeping the maintenance groove 11 of half and half magnetic core.In the end that is positioned at slipping plane 1a direction that keeps groove 11, form teat 12.As Fig. 2 and shown in Figure 4, the side towards slipping plane 1a of this teat 12 is as the location division 12a with respect to half magnetic core.
Seal in central authorities on the maintaining part S1 of half plate, form maintenance groove 13.In the end that is positioned at slipping plane 1a direction of this maintenance groove 13, form teat 14.Side towards slipping plane 1a of this teat 14 is as the location division 14a that seals half plate with respect to central authorities.
On the maintaining part S2 of each side seal half plate, form maintenance groove 15 respectively, in the end that is positioned at slipping plane 1a direction of this maintenance groove 15, form teat 16.As shown in Figure 3, the side towards slipping plane 1a of teat 16 is as the location division 16a with respect to side seal half plate.
In the present embodiment, location division 12a, 14a and 16a are perpendicular to the plane of median plane O-O.But location division 12a, 14a and 16a also can favour median plane O-O.In the present embodiment, on half deck 10, each location division 12a, 14a and 16a are positioned at on the one side.Therefore, on half deck 10, the common plane A of location division 12a, 14a and 16a (seeing Fig. 5 and Fig. 6) is processed accurately.This location division 12a, 14a and 16a also not necessarily leave no choice but form with one side, but form the relative position that can determine each location division 12a, 14a and 16a with one side accurately, and machined surface is a face (A), handling ease.
On a side half deck on 10, keeping four and half magnetic cores 20.
Half magnetic core 20 is stacked laminates that form of several slices of being done by magnetic materials such as Fe-Ni-Nb class alloys.Sidepiece at half magnetic core 20 forms location division 21.As shown in Figure 2, the bottom surface 11a of the maintenance groove 11 of this location division 21 butts, half deck 10 makes half magnetic core 20 locate at directions X with respect to half deck 10.
On half magnetic core 20, be formed with recess 22, this recess 22 in seal box 1 side (the interior side of half deck 10) face, become location division 22a.As shown in Figure 2, the location division 12a of this location division 22a butt half deck 10 makes half magnetic core 20 locate in the degree of depth Gd of magnetic gap direction (Y1-Y2 direction).The base portion of half magnetic core 20 is the コ font, and its cardinal extremity 23 inserts in the bobbin 5.Part in cardinal extremity 23 fronts becomes the recess 24 of the コ font that inserts for bobbin.As shown in Figure 2, above-mentioned cardinal extremity 23 inserts in the center pit 5b of bobbins 5, in the periphery of bobbin 5 around coil 6.Mark 5a represents the wire wrapped connection terminal of coil 6.
Also show central authorities' sealing half plate 30 among Fig. 5.It is the sheet material that is formed by magnetic materials such as Fe-Ni-Mo class alloys that these central authorities seal half plate 30.Seal the sidepiece of half plate 30 in central authorities, form location division 31.By this location division 31 and the bottom surface 13a butt that keeps groove 13, central authorities' sealing half plate 30 is located at directions X with respect to half deck 10.The sidepiece that seals half plate 30 in central authorities is formed with recess 32, this recess 32 in seal box 1 side (the interior side of half deck 10) face, become location division 32a.By the location division 14a butt of this location division 32a and half deck 10, central authorities' sealing half plate 30 is located in magnetic gap degree of depth Gd direction (Y1-Y2 direction) with respect to half deck 10.
Side seal half plate 40 has been shown among Fig. 3.The shape of this side seal half plate 40 is basic, and to seal half plate 30 identical with central authorities, is the plate that is formed by Fe-Ni-Nb class alloy etc.
The sidepiece of side seal half plate 40 becomes location division 41, and this location division 41 and the bottom surface 15a butt that keeps groove 15 make side seal half plate 40 locate at directions X with respect to half deck 10.Sidepiece at side seal half plate 40 also is formed with recess 42, and the face towards seal box 1 interior side (the interior side of half deck 10) of this recess 42 becomes location division 42a.By the location division 16a butt of this location division 42a and half deck 10, side seal half plate 40 is located in the Y1-Y2 direction with respect to half deck 10.
Below, the manufacture method (assemble method) of said head is described.
Earlier half magnetic core 20, central authorities are sealed on maintaining part C, S1 that half plate 30 and side seal half plate 40 remain on half deck 10, the S2.Central authorities' sealing half plate 30 is inserted into and keeps in the groove 13, the location division 31 and the bottom 13a butt that keeps groove 13 of central authorities' sealing half plate 30.
4 half magnetic cores 20 are inserted respectively in the maintenance groove 11, and the location division butt of half magnetic core 20 keeps the bottom surface 11a of groove 11.Similarly, 2 side seals, half plate 40 is inserted in the maintenance groove 15, location division 41 butts keep the bottom surface 15a of groove 15.
After central authorities sealings half plate 30, half magnetic core 20 and side seal half plate 40 all insert in the maintenance groove of half deck 10, owing to each keep groove 11,13,15 towards reason, each configuration of components is Ha font shown in Figure 6.
In the present embodiment, central authorities sealings half plate 30 towards being direction along half deck, 10 Central Lines 01, half magnetic core 20 that is positioned at central authorities sealing half plate 30 both sides has angle [alpha] 1 with respect to Central Line 01, and side seal half plate 40 of its outer hand hay cutter and half magnetic core 20 of more lateral have angle [alpha] 2, α 3 respectively with respect to Central Line 01.α1＜α2＜α3。
Therefore, in (イ) part of face one side of recording medium sliding contact, the mutual crimping of each fore-end of central authorities' sealing half plate 30, half magnetic core 20, side seal half plate 40.And in seal box 1 (mouth) part of side, the cardinal extremity of central authorities sealings half plate 30, half magnetic core 20, side seal half plate 40 is separated from each other, each central authorities' sealing half plate 30, half magnetic core 20, side seal half plate 40 are the Ha font and dispose.
The result of the mutual crimping of each fore-end of central authorities' sealing half plate 30, half magnetic core 20, side seal half plate 40 is the some bending stresses that applied direction shown in the β on half magnetic core 20 and side seal half plate 40.Therefore, (イ) Bu Fen pressure contact portion elastic reaction produces towards seal box 1 interior side (Y1 direction: the natural recuperability interior side of half deck 10) central authorities' sealing half plate 30, half magnetic core 20, side seal half plate 40 respectively.Because the effect of this recuperability, the location division 32a of central authorities' sealing half plate 30 is crimped on the location division 14a of half deck 10, similarly, the location division 22a of half magnetic core 20 is crimped on the 12a of location division, the location division 42a of side seal half plate 40 is crimped on the 16a of location division, like this, each central authorities' sealing half plate 30, half magnetic core 20, side seal half plate 40 are located in the Y1-Y2 direction with respect to half deck 10.
In addition, in order to make each central authorities' sealing half plate 30, half magnetic core 20, side seal half plate 40 be pushed to the Y1 direction by above-mentioned recuperability, being preferably between central authorities' sealing half plate 30, half magnetic core 20, side seal half plate 40 and their the maintenance groove of setting-in 11,13,15 has gap slightly.
Like this, central authorities seal half plate 30, half magnetic core 20, when side seal half plate 40 is assembled on half deck 10, applied thrust does not use anchor clamps, just can make central authorities' sealing half plate 30, half magnetic core 20, side seal half plate 40 with respect to half deck, 10 location accurately.
In order to carry out above-mentioned location effectively, also can seal the front end of half plate 30, half magnetic core 20, side seal half plate 40 to central authorities all toward the pushing of F direction, central authorities are sealed half plate 30, half magnetic core 20, side seal half plate 40 apply towards the power of Y1 direction, position with respect to half deck 10.
After having carried out above-mentioned positioning operation, in maintaining part C, the S1 of central authorities sealings half plate 30, half magnetic core 20, side seal half plate 40, S2, inject resin adhesive etc., central authorities are sealed half plate 30, half magnetic core 20, side seal half plate 40 be adhesively fixed on half deck 10.
The above-mentioned assembly that has been adhesively fixed is ground, its median plane is become with one side.With a pair of assembling halfbody that assembles like this, the nonmagnetic substances such as titanium that are used as the magnetic gap material at median plane O-O are bonding, at this moment, bobbin 5 outer being contained on the cardinal extremity 23 of half magnetic core 20, keep half deck 10,10 with metal parts shown in Figure 18,8.Be inserted into again in the seal box 1, a pair of assembly that is assembled into by half deck 10, central authorities sealings half plate 30, half magnetic core 20, side seal half plate 40 with respect to seal box 1 behind Y2 direction location, inject resin and be fixed in the seal box 1.
Then, on dashdotted shown in Figure 2, grind, form slipping plane 1a.At this moment (イ) part, half magnetic core 20 and part or all of contact site (pressure contact portion) that respectively seal half plate 30,40 can be removed.
In the magnetic head with this manufacture method formation, half magnetic core 20 and each seal half plate 30,40 and locate accurately in seal box 1, and therefore, the magnetic gap degree of depth Gd of each magnetic core shown in Figure 2 is set accurately.In addition, on half deck 10, owing to each location division 12a, 14a, 16a are positioned at on the one side A, so each relative position of central authorities' sealing half plate 30, half magnetic core 20, side seal half plate 40 is also set accurately.The manufacturing of half deck 10 is also easy.
Fig. 4 has represented the positioning states of half magnetic core 20 with respect to half deck 10 enlargedly.Among Fig. 4, the location division 12a butt of the location division 22a of half magnetic core 20 and half deck 10 makes half magnetic core 20 locate in the Y1 direction with respect to half deck 10.
In the present embodiment, be provided with undercut 12b on the bottom surface 11a of the maintenance groove 11 of half deck 10, this undercut 12b retains portion as the unnecessary adhering resin of fixing half magnetic core 20.
In the present embodiment,, on half magnetic core 20, formed recess 22 for location division 22a is set.This recess 22 is provided with the position, and magnetic properties that must double magnetic core 20 does not have harmful effect.
At first, on half magnetic core 20, become curved surface 26,, prevent the fluctuating of broadcasting signal that causes because of contour effects by designing this curved surface 26 near slipping plane 1a side partly.Therefore, if recess 22 is located at the position that influences curved surface 26, just may produce the disadvantage that contour effects causes.
Fig. 7 represents to measure the result that magnetic head is broadcasted output, adopts half magnetic core 20 of shape shown in the foregoing description in this magnetic head.The transverse axis of Fig. 7 is represented from slipping plane 1a to location division 22a the distance of (recess 22 by slipping plane one lateral edges).If the total length from the slipping plane 1a of half magnetic core 20 to the rear end is L, with the distance of representing for Fig. 7 transverse axis that likens to of this L.The longitudinal axis is the relief volume of the contour effects when representing that with dB the 50Hz magnetic signal is broadcasted
In listening to the magnetic head of usefulness, if the relief volume that produces because of contour effects does not influence use at 3dB with next.Therefore, as can be known from Fig. 7,, then can prevent the harmful effect that contour effects produces if slipping plane 1a is more than the 0.3L to the distance of location division 22a.
Be formed on the position by the edge 22b of side's one side in the seal box of the recess 22 on half magnetic core 20, preferably be located at the too small position of basal area that does not make half magnetic core 20.In half magnetic core 20 shown in Figure 4, insert the basal area E1 minimum of recess 24 parts at bobbin.Therefore, the long-pending E2 of formation minimum cross section partly at recess 22 must be not less than above-mentioned E1.If the magnetic flux densities that E2 less than E1, then passes in half magnetic core 20 reduce, cause that magnetic head broadcasts the reduction of output etc.In embodiment illustrated in fig. 4, being not less than E1 in order to make basal area E2, must be the distance setting between location division 22a and the slipping plane 1a below the 0.7L.
That is, the position of recess 22 should meet following condition: the distance from slipping plane 1a to location division 22a is more than the 0.3L, and the magnetic core basal area E2 of the edge 22b of recess 22 part is greater than the long-pending E1 of the minimum cross section of half magnetic core 20.Above-mentioned distance is preferably more than the 0.3L and below the 0.7L.
In addition, also can towards the edge part 22b of the slipping plane 1a of half magnetic core 20 as the location division, when assembling, half magnetic core 20 and sealing half plate 30,40 are pushed away toward the Y2 directions, with above-mentioned location division half magnetic core 20 and sealing half plate 30,40 are located.
Can also on half magnetic core and sealing half plate, establish projection, this projections is positioned on half deck 10.
As mentioned above, in the magnetic head of the present invention, magnetic core or magnetic core and seal pad are to position with the location division with respect to deck, so, under the state of assembling, each magnetic core is located accurately with respect to seal box, can determine magnetic gap degree of depth Gd etc. accurately.
In addition, in the magnetic head manufacturing method of the present invention, because magnetic core and seal pad are the mutual crimping of slipping plane one side, under its bounce effect, magnetic core and seal pad tend to return the direction in the seal box naturally, and like this, magnetic core and seal pad be butt deck effectively the location division.Therefore, need not to use anchor clamps to apply external force, just can be accurately with magnetic core and seal pad location.
In addition, if in deck, magnetic core and seal pad all location divisions all form with one side, then can locate accurately the relative position of magnetic core and magnetic core and seal pad relative position.
In addition, when forming recess on the magnetic core and be provided with under the situation of location division, be the edge of slipping plane one side of recess more than the 0.3L to the distance setting of magnetic core front end, just can prevent the influence of contour effects.
Claims (6)
1. magnetic head, deck is located in the seal box, and magnetic core and seal pad remain on this deck, and coil is contained in outward on the above-mentioned magnetic core, it is characterized in that, on above-mentioned deck and magnetic core, is provided with the location division of magnetic core in magnetic gap depth direction location.
2. magnetic head, deck is located in the seal box, and magnetic core and seal pad remain on this deck, coil is contained in outward on the above-mentioned magnetic core, it is characterized in that, on above-mentioned deck and magnetic core and deck and seal pad, be provided with magnetic core and seal pad location division magnetic gap depth direction location.
3. magnetic head as claimed in claim 2 is characterized in that, in above-mentioned deck, the location division of magnetic core and seal pad the location division be formed on the one side on.
4. as each the described magnetic head in the claim 1 to 3, it is characterized in that, on magnetic core, form recess, this recess by the limit of slipping plane one side as the location division, if the total length of magnetic core is L, be more than the 0.3L by the limit of slipping plane one side to the distance of above-mentioned location division then from magnetic core.
5. magnetic head manufacturing method, in this magnetic head, deck is located in the seal box, magnetic core and seal pad remain on this deck, coil is contained in outward on the magnetic core, it is characterized in that, forms the location division towards slipping plane one side on deck, on magnetic core and seal pad, form the location division of side in deck, magnetic core and seal pad located with respect to deck in order to following method:
1. when being assembled into magnetic core and seal pad on the deck, magnetic core and seal pad are in contact with one another slipping plane one side, side's one side disposes with being separated from each other in deck;
2. utilize on magnetic core and the seal pad because of above-mentioned and contact power that counter-force produces, side in the deck, magnetic core and seal pad the location division prop up the location division of deck, magnetic core and seal pad are located on deck.
6. magnetic head manufacturing method as claimed in claim 5, it is characterized in that magnetic core and seal pad and deck are contained in the seal box, be fixed on deck on the seal box after, the slipping plane of grinding-in box, remove magnetic core and seal pad part or all of above-mentioned contact site.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP340131/1994 | 1994-12-28 | ||
| JP340131/94 | 1994-12-28 | ||
| JP06340131A JP3088257B2 (en) | 1994-12-28 | 1994-12-28 | Magnetic head and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1132387A true CN1132387A (en) | 1996-10-02 |
| CN1069142C CN1069142C (en) | 2001-08-01 |
Family
ID=18334028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95120441A Expired - Fee Related CN1069142C (en) | 1994-12-28 | 1995-12-28 | Magnetic head and its mfg. method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3088257B2 (en) |
| CN (1) | CN1069142C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108108639A (en) * | 2018-02-02 | 2018-06-01 | 北京泰和磁记录制品有限公司 | Magnetic card reader and its magnetic card magnetic head |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2798830B2 (en) * | 1991-11-15 | 1998-09-17 | アルプス電気株式会社 | Magnetic head |
-
1994
- 1994-12-28 JP JP06340131A patent/JP3088257B2/en not_active Expired - Fee Related
-
1995
- 1995-12-28 CN CN95120441A patent/CN1069142C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108108639A (en) * | 2018-02-02 | 2018-06-01 | 北京泰和磁记录制品有限公司 | Magnetic card reader and its magnetic card magnetic head |
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| Publication number | Publication date |
|---|---|
| CN1069142C (en) | 2001-08-01 |
| JP3088257B2 (en) | 2000-09-18 |
| JPH08185604A (en) | 1996-07-16 |
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