CN1783672A - Laminated magnetic core of linear actuator and its producing method - Google Patents
Laminated magnetic core of linear actuator and its producing method Download PDFInfo
- Publication number
- CN1783672A CN1783672A CN 200510114792 CN200510114792A CN1783672A CN 1783672 A CN1783672 A CN 1783672A CN 200510114792 CN200510114792 CN 200510114792 CN 200510114792 A CN200510114792 A CN 200510114792A CN 1783672 A CN1783672 A CN 1783672A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- laminated
- magnetic core
- yoke portion
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A stacked core, comprising a plurality of magnetic plates (22) circumferentially stacked to form a tubular body, characterized in that each of the magnetic plates (22) adjacent to each other further comprises a connection point (25) on either of the outer peripheral side upper and lower parts of the stacked core and a gap part (26) on the opposite side of the connection point (25) and that the connection point (25) is circumferentially provided on the stacked core alternately between the upper part (23) and the lower part (24) thereof, whereby a radial stacked core can be assembled easily.
Description
The application is to be September 26 calendar year 2001, application number the dividing an application for the patent application of " linear actuator " that be 01816276.2 (PCT/JP01/08409), denomination of invention the applying date.
Technical field
The present invention relates to go for for example laminated magnetic core of the electromagnetic application equipment of linear actuator, linear electrical generator, electromagnetically operated valve etc.
Background technology
With the 26th figure traditional linear actuator is described.This linear actuator is made of following parts: yoke portion 10 is a kind ofly will utilize many pieces of E type magnetic sheet 8 that the moulding of die stamping sheet metal obtains to be radial and the laminated magnetic core of the tubular that forms around central shaft; Coil portion 2 is wound on the slot part 1 of this yoke portion 10; Outer yoke portion 3 is radial formation tubular with many pieces of the I type magnetic sheet that utilizes the rectangular sheet metal moulding of die stamping to obtain around central shaft and obtains; Permanent magnet pieces 5,6, clearance portion 4 places in being configured between yoke portion 10 and the outer yoke portion 3; With vibrating body 7, support this permanent magnet pieces 5,6.These permanent magnet pieces 5,6 magnetize along radial direction, the magnetic pole of permanent magnet pieces is fixed on the vibrating body 7 respectively on the contrary, so that the direction of its magnetic pole is configured to, for example if be the N utmost point in the interior yoke portion side of permanent magnet pieces 5, then the interior yoke portion side of permanent magnet pieces 6 becomes the S utmost point.Linear drive with above formation forms the magnetic circuit shown in the arrow by the circulation of the magnetic flux that flows through electric current produce in coil portion 2.Therefore the sense of current by flowing through in the reset coil portion 2 changes the magnetic flux circulation direction that produces from coil portion 2, and according to its magnetic flux change, permanent magnet pieces 5,6 repeats to attract, repel reciprocating motion axially.
Yet, have problem shown below at traditional linear actuator.
(1) because traditional laminated magnetic core is cylindric lamination, be necessary to make 1 piece of magnetic sheet thick in the laminated magnetic core outside, and inboard thin at laminated magnetic core.Because the thickness of the magnetic sheet of common circulation also all is identical at any segment thickness, so consider at the laminated magnetic core shown in the conventional example it is that one piece one piece ground cutting of magnetic sheet is changed its thickness.Adopt this class methods, not only the property produced in batches is poor, and the thickness of magnetic sheet can not keep homogeneous, is difficult to form cylindrical shape.
(2) though not shown, even yet obtain the magnetic core of lamination by the magnetic sheet of homogeneous thickness, the magnetic sheet of internal side diameter adjacency contacts each other, then may produce the gap between the magnetic sheet of outer circumferential side adjacency, be necessary to carry out the bonding processing between magnetic sheet and support member of japanning processing etc., thereby cause that cost is skyrocketing.Especially such laminated magnetic core is owing to be laminated body radially, and magnetic sheet is to radial extension, and more towards outer circumferential side, the gap between steel plate is big more.Therefore, whole iron amounts of interior yoke portion, be space factor low in, it is difficult that the magnetic flux that produces from permanent magnet pieces is delivered to sheet metal.
(3) and for existing C type or E type magnetic core, the circulation of the magnetic flux that produces from coil is to circulate along direction of vibration in interior all sides, in the face side relative with permanent magnet pieces along radial direction.In order to effectively utilize the magnetic flux that produces from coil more, consider to use grain-oriented magnetic steel sheet with the magnetic characteristic that easily circulates at a direction magnetic flux.This grain-oriented magnetic steel sheet has in the easy feature of circulation of rolling direction magnetic flux, and low with the meet at right angles magnetic characteristic of direction of the rolling direction of steel plate.Therefore, under the situation by die stamping C type or E type core shapes, either party of vibrating body direction or radial direction utilizes and the meet at right angles low magnetic characteristic of magnetic susceptibility of direction of rolling direction, can not fully effectively utilize the magnetic flux that coil portion produces.
Summary of the invention
The present invention is the laminated magnetic core that many pieces of magnetic sheets is made cylindrical body along all direction laminations, it is characterized by, adjacent magnetic sheet is provided with connecting portion on the top of the outer circumferential side of laminated magnetic core or one of them of bottom, place, opposition side at this connecting portion is provided with clearance portion, on the Zhou Fangxiang of laminated magnetic core, top, bottom, top, bottom alternately are provided with aforementioned connecting portion, make the assembling of laminated magnetic core radially easy.
The present invention be many pieces of magnetic sheets along all direction laminations, make the laminated magnetic core of cylindrical body, it is characterized by, utilize the connecting portion that extends from aforementioned magnetic sheet end to connect adjacent magnetic sheet, make the assembling of laminated magnetic core easy.
The present invention be many pieces of magnetic sheets along all direction laminations, make the laminated magnetic core of cylindrical body because this laminated magnetic core is axially cut apart, make the installation of coil portion easy.
The present invention be by with many pieces of magnetic sheets along all direction laminations, form the laminated magnetic core that the cylindrical body in gap forms at the outer circumferential side of adjacent magnetic sheet because utilize molded this laminated magnetic core of resin compounded material that comprises Magnaglo, institute is so that laminated magnetic core is firm.
The present invention be many pieces of magnetic sheets along all direction laminations, make the laminated magnetic core of cylindrical body, this laminated magnetic core by make coreplane along the radially laminated body of all direction laminations and make laminated body axially the axial laminated body of lamination constitute, make the assembling of laminated magnetic core easy.
The present invention is that aforementioned cylindrical body two ends make the assembling of laminated magnetic core easy to the cylindrical body outside curve many pieces of magnetic sheets lamination and make the laminated magnetic core of cylindrical body radially.
Description of drawings
Fig. 1 is the profile of the linear actuator of embodiment 1.
Fig. 2 is the figure that yoke portion in the embodiment 1 is shown.
Fig. 3 (a) is the figure that sees from the laminated body piece outer circumferential side of embodiment 1, (b) is the figure that all sides are seen in the laminated body piece.
Fig. 4 is the profile of compressor.
Fig. 5 is the part sectioned view of the linear actuator of embodiment 2.
Fig. 6 is the figure that the magnetic sheet of embodiment 2 is shown.
Fig. 7 is the figure that the laminated magnetic core of embodiment 2 is shown.
Fig. 8 is the figure that the molded interior yoke portion of embodiment 2 is shown.
Fig. 9 illustrates the figure that 2 places have the magnetic sheet of connecting portion.
Figure 10 is the part sectioned view of interior yoke portion.
Figure 11 is the figure that the interior yoke portion of embodiment 3 is shown.
Figure 12 is the figure that the magnetic sheet of embodiment 3 is shown.
Figure 13 is the figure that the magnetic sheet case of bending of embodiment 3 is shown.
Figure 14 is the figure that yoke partly cuts the back state in illustrating.
Figure 15 is the figure of yoke portion in illustrating.
Figure 16 illustrates the figure that magnetic sheet is divided into 2 parts.
Figure 17 is that yoke partly is the figure of 2 parts in illustrating.
Figure 18 is the part sectioned view of the interior yoke portion of embodiment 4.
Figure 19 is the part sectioned view of the interior yoke portion of embodiment 5.
Figure 20 is the part sectioned view of the interior yoke portion of embodiment 6.
Figure 21 is the part sectioned view of the interior yoke portion of embodiment 7.
Figure 22 is the part sectioned view of the interior yoke portion of embodiment 8.
Figure 23 is the part sectioned view of the interior yoke portion of embodiment 9.
Figure 24 is the part sectioned view of the interior yoke portion of embodiment 10.
Figure 25 is the part sectioned view of the interior yoke portion of embodiment 11.
Figure 26 (a) is the profile of existing linear actuator, (b) is the part sectioned view of interior yoke portion.
Embodiment
Below use the description of drawings embodiments of the invention.
(the 1st embodiment)
Fig. 1 illustrates the formation of linear actuator 11.Linear actuator 11 comprises: yoke portion 13 in the tubular, in this, twine the coil portion 12 of spiral in the yoke portion 13, the outer yoke portion 14 of yoke portion 13 in inboard configuration, be positioned at permanent magnet pieces 15a, 15b that the gap location of yoke portion 13 and outer yoke portion 14, the magnetic flux that produces according to coil portion 12 vibrate and the vibrating body cylindraceous 16 of supporting this permanent magnet pieces 15a, 15b. Permanent magnet pieces 15a, 15b are fixed on the side of interior yoke portion 13 sides of vibrating body 16.End at vibrating body 16 has the efferent 17 that transmits the vibration of vibrating body 16 to the outside.This efferent 17 is to make the such shape of lid on cylindrical vibration body 16.On the output shaft of this efferent 17, resonant springs is installed,, the necessary power of vibration is diminished, can reduce the drive current that flows through in the coil portion 12 by resonance with spring.
If ensconce in the compressor shown in Figure 4 in such linear actuator, it is possible then carrying out the high efficiency driving.Linearkompressor 150 is made of linear actuator portion 160, output mechanism portion 170, spring mechanism portion 171, closed container 172, portion of supporting mechanism 173 etc.Also can be with this class compressor in air regulator.
Secondly, describe this linear actuator in detail.Interior yoke portion 13 has the rectangle electromagnetic steel plate of 2 place's recesses at all direction laminations, makes drum.Groove in the arranged outside ring-type of interior yoke portion 13.By winding around on the groove of this ring-type, form coil portion 12.
Annular permanent magnnet sheet 15a, 15b are adhesively fixed on interior all sides side of vibrating body 16 or are pressed into fixing.The magnetic flux direction of this permanent magnet pieces 15a, 15b is towards the radial direction of interior yoke portion 13, and next-door neighbour's permanent magnet pieces 15a, 15b become heteropole.The magnetic flux of permanent magnet pieces 15a is yoke portion 14 outside interior yoke portion 13 enters, yoke portion 13 in the magnetic flux of permanent magnet pieces 15b enters from outer yoke portion 14.
The linear actuator that obtains by such formation passes through the electric current of reset coil portion 12, makes vibrating body 16 vibrations.In case flow through electric current in coil 12, then yoke portion 14 and interior yoke portion 13 form the magnetic flux loops outside.By this magnetic flux loop, magnetic flux appears on the gap.Mobile permanent magnet pieces 15 is so that near this magnetic flux direction.And make the magnetic flux reversals that flows through in the gap by the switching current direction, corresponding to this magnetic flux, permanent magnet pieces 15 moves.By the switching current direction, make vibrating body 16 vibrations like this.
The feature of present embodiment by weld the magnetic sheet that is formed by the thin electromagnetic steel plate that is close to zigzag, makes adjacent magnetic sheet be the combination of V word shape, yoke portion 13 in forming.The magnetic sheet that Fig. 2 illustrates the next-door neighbour becomes the laminated magnetic core of V word shape, below at length is illustrated.The magnetic core of this lamination does not become cylindric, just for simply, so that easily this is illustrated, is actually and makes the magnetic sheet lamination become cylindric.
If specifically, by only on a wherein side of the top of adjacent magnetic sheet 22 or bottom, tie point 25 being set, when adjacent magnetic sheet 22 makes laminated magnetic core, the shape that is in the shape of the letter V coincidence.If the tie point 25 of this V font is in top 23, the tie point 25 of the then adjacent magnetic sheet that makes the V font 22 is in bottom 24.Make the magnetic sheet that is overlapped into the V font at Zhou Fangxiang lamination like this.
About interior all sides side 27 of interior yoke portion 13, owing to connect next-door neighbour's magnetic sheet, so on top, central portion, bottom be provided with tie point 25, the state that connects on interior all sides side 27 of yoke portion 13 in being formed on simultaneously.
Near the tie point magnetic sheet is that next-door neighbour's magnetic sheet is overlapping, even especially not overlapping, also can often keep certain certain interval by connector.
Secondly, the method for making of above-mentioned laminated magnetic core is described with Fig. 3.At first, many pieces of magnetic sheets 22 overlapping laminations are become row.And by welding tie point is set at the outer circumference side edge face place of the magnetic sheet of the circumferential lateral surface that becomes laminated magnetic core.Tie point 25 alternatively up and down ground, the welding of engrail ground be on top 23, bottom 24, top 23, bottom 24.If have tie point 25 on the top 23 of outer circumferential side side of next-door neighbour's magnetic sheet 22, then 24 sides do not have tie point in the bottom, and next-door neighbour's magnetic sheet 22 is in the state that can separate.Similarly, if having tie point 25 on the outer circumference side edge face bottom 24 of the magnetic sheet 22 that is close to, then 23 sides do not have tie point on top, and next-door neighbour's magnetic sheet 22 is in and separates such state.
On interior all sides of the magnetic sheet 22 of the interior all sides side that becomes laminated magnetic core, on top, central portion and bottom, tie point 25 is set, so that connect next-door neighbour's magnetic sheet 22 by welding.By tie point 25 is set, only connect all next-door neighbours' magnetic sheet 22 in interior all sides, the interarea of magnetic sheet 22 can not become one by welding.
Like this, many pieces of magnetic sheets of welding 22 can make laminated body piece 30, make interior all side end faces 27 of laminated body piece 30 do to become central side, by the outer circumferential side of stretch laminate body piece 30, make laminated body piece 30 make cylindric magnetic core.Interior all side end faces 27 of laminated body piece 30, owing to magnetic sheet links together, so even stretch laminate body piece, interior all sides of laminated body piece 30 are long also constant., the outer circumferential side of laminated body piece is long because next-door neighbour's magnetic sheet also not exclusively connects, so in case the power that stretches at stack direction works, then open at the interval on the position that does not have tie point 25, elongated.
That is, because the outer perimeter of laminated body piece 30 changes, in case it is cylindric that interior all sides of laminated body piece 30 are made, outer circumferential side stretches at the stack direction of magnetic sheet, and laminated body piece 30 becomes laminated magnetic core cylindraceous.At this moment, the outer circumferential side of laminated body piece 30 is expanded next-door neighbour's magnetic sheet at interval and is opened, yet the side that next-door neighbour's magnetic sheet 22 1 fixes on top 23 or bottom 24 has tie point 25, so even stretch at stack direction, also should not open near tie point 25.
By tie point 25 is set, because the part of the outer circumferential side side of next-door neighbour's magnetic sheet 22 necessarily connects, if stretch laminate body piece 30 is then stressed equably on each magnetic sheet.Stretch by the impartial power of this class, the clearance portion 26 that next-door neighbour's magnetic sheet 22 forms is also opened with equal width.And magnetic sheet 22 should be opened lamination with the interval of equalization at Zhou Fangxiang.
If on the outer circumference side edge face of laminated body piece 30, do not have tie point, though then the laminated body piece make cylindric because the outer circumferential side of magnetic sheet is not stretched by impartial power, thus can not make magnetic sheet with the interval of equalization along all direction laminations.
The method for making of above-mentioned laminated magnetic core is illustrated with regard to the interior yoke portion of linear actuator, but yoke portion in being not limited to also uses in the yoke portion outside.In addition, if make the laminated magnetic core of magnetic sheet, also can be used for electromagnetically operated valve, transformer, inductive electromagnetic heater etc. at all direction laminations.Can also can connect without welding about connecting also by riveted joint.
(embodiment 2)
As shown in Figure 5, at embodiment 2, configuration has the vibrating body 53 of permanent magnet pieces 52 on the outer circumferential side of interior yoke portion 51, again yoke portion 54 outside its outside configuration.Interior yoke portion 51 keeps 1 coil.As shown in Figure 6, a groove 56 that inserts coil is set on the magnetic sheet 55 that constitutes by thin electromagnetic steel plate.The magnetic sheet 55 of adjacency connects by connecting portion 57.
Like this, make magnetic sheet 55 bendings of connection by connecting portion 57, make the magnetic sheet 55 of adjacency folding, lamination forms as shown in Figure 7 radial.Thereafter, the internal side diameter by making the iron core behind the lamination two places welding is up and down fixed, and makes the magnetic sheet of adjacency on the circumference form one to each other, thus the assembling of yoke portion 51 in finishing.
At this moment, the length L 1 of the connecting portion 57 of Fig. 6 makes and distance L 0 same size of 55 of magnetic sheets during radial lamination shown in Figure 7.In this, be provided with in the yoke portion 51 lead-in wire 59,59 ', as the electrical connection that is used in coil portion, switching on.
In order to improve intensity as the interior yoke portion 51 of lamination, also can be molded shown in Figure 7 interior yoke portion.At this moment molded utilization comprises the resin compounded material of 65 volume % iron powders, and specifically, the thermohardening type mylar carries out (Fig. 8 illustrate molded interior yoke portion).Also can be molded in the following way: the gap of yoke portion 51 or adorning the slot space of coil portion in the resin compounded material imbedded seems that the stator goods are one independently individual.For the iron powder that comprises is guaranteed the electric insulation of coil in this resin composite body material, can carry out protective oxide layer in advance and handle, utilize protective oxide layer to cover the iron powder surface as insulant.
The raising of the magnetic characteristic that produces by the resin compounded material that comprises iron powder makes efficiency of motor improve 2%.The iron powder volume % that comprises in the improvement of this efficient and the resin compounded material is directly proportional.That is, along with the iron powder amount increases, the improvement degree also improves, yet because formability is poor, 80 volume % are boundaries in fact.On the one hand, amount can not be brought into play characteristic and improve effect below 50 volume %.Therefore suitable iron powder amount is 50～80%.
Next-door neighbour's magnetic sheet connecting portion 57 also can be set at two places as shown in Figure 9.
When on stator, having 2 coils, also 2 place's grooves 46 can be set on magnetic sheet shown in Figure 10 45.Make behind this magnetic sheet lamination as shown in figure 11, groove 46 has two places up and down.
Magnetic sheet is formed by electromagnetic steel plate punch process method, and its magnetic characteristic is by the magnetic characteristic decision of the electromagnetic steel plate that uses.Therefore, magnetic characteristic is good, specifically iron loss little, that magnetic density is high is good.Usually in motor, adopt direction-free electromagnetic steel plate.This steel plate has good magnetic characteristic to the steel plate all directions.
Yet because at the iron core of linear actuator of the present invention, magnetic flux is only in the prescribed direction of magnetic sheet, specifically at above-below direction (axially) with radially circulate, needs only all right having excellent magnetic characteristics of this direction.
Even non-oriented electromagnetic steel sheet having also has good magnetic characteristic to either direction, however with transformer etc. in the grain-oriented magnetic steel sheet that uses best magnetic characteristic direction characteristic relatively, its magnetic characteristic is quite low.Therefore adopt 2 specific directions, specifically, by adopting the 2 good grain-oriented magnetic steel sheets of magnetic characteristic of electromagnetic steel plate rolling direction and right angle orientation thereof, make the above-below direction of magnetic sheet become the steel plate rolling direction and form the punching press stator core, compared with the situation that adopts non-oriented electromagnetic steel sheet having, electric efficiency can improve 2% degree.
(embodiment 3)
Connecting portion 71 length L 3 between the magnetic sheet of adjacency are by magnetic sheet size La, Lb and aforementioned L0 and stator core external diameter Ld decision.Specifically, the formula by L2=L0/Ld* (Ld-La+Lb) determines.Thereafter, as shown in figure 13, son is folding similarly to Example 2, is radial lamination.Like this, prepare to be divided into two-part up and down interior yoke top 72 respectively, interior yoke bottom 73, in addition, the coil portion of installing on iron core 74 is wound in solenoid type in advance, fixes by certain rule, as shown in figure 14, with respectively interior yoke top 72,73 assemblings of interior yoke bottom behind the lamination up and down.Therefore, this assembly is molded by the resin compounded material, thus yoke portion in finishing.
When interior yoke portion coil is two, as shown in Figure 16 magnetic sheet is divided into upper, middle and lower 3 parts, yoke top 75 in individually forming respectively, interior yoke middle part 76 and interior yoke bottom 77.And yoke top 75 in the assembling as shown in figure 17, interior yoke middle part 76, interior yoke bottom 77 and coil portion 88,89 obtain utilizing the molded interior yoke portion of resin compounded material.
(embodiment 4)
Interior yoke portion 83 as shown in Figure 18 is made of 3 toothed region 81 and 1 yoke portion main body 82.Toothed region 81 is to make magnetic sheet strike out ring-type and moulding at coaxial superimposed layer, forms axial laminated body to them.Yoke portion main body 82 is to make magnetic sheet strike out rectangle, thereby for making them form tubular it is obtained radially laminated body in the Zhou Fangxiang arrangement.This be shaped to rectangular-shaped magnetic sheet by grain-oriented magnetic steel sheet constitute, according to the feature that the so-called vibrating body of this grain-oriented magnetic steel sheet flows at rolling direction easily, when Zhou Fangxiang arranges, make the steel plate rolling direction consistent with the vibrating body direction of vibration.The mode chimeric according to the outer peripheral face of the inner peripheral surface of toothed region 81 and yoke portion main body 82 makes up 3 toothed region 81, in order to ensure the spiral space of coil, 3 toothed region 81 is configured to uniformly-spaced.In the interior yoke portion 83 that constitutes like this, because of flowing through the magnetic flux that electric current produces in the coil portion that is wrapped in slot part 84 places, yoke portion main body 82 become vibrating body direction of vibration, become radial direction magnetic flux 81 of toothed region.Therefore, formation according to yoke portion 83 in aforesaid, at the direction of vibration or the radial direction that use the vibrating body that produces when striking out E type for example or C type by grain-oriented magnetic steel sheet, wherein any does not use the meet at right angles low magnetic characteristic of permeability of direction of the rolling direction that flows easily with magnetic flux, can only utilize good characteristic.
Such yoke portion constitute be not limited to be used in yoke portion, also go for outer yoke portion.
(embodiment 5)
As shown in figure 19, the shape of interior yoke portion 87 is that the inner peripheral surface shape of 3 toothed region 85 is shapes that relative vibrating body direction of vibration tilts, and the peripheral shape of yoke portion main body 86 also is the shape that relative vibrating body direction of vibration tilts.Toothed region 85 is that magnetic sheet is struck out ring-type, and they at coaxial superimposed layer, are formed axial laminated body.Yoke portion main body 86 is to make magnetic sheet strike out rectangle, thereby they are arranged the radially laminated body that forms tubular at Zhou Fangxiang.This strike out rectangular-shaped magnetic sheet by grain-oriented magnetic steel sheet constitute, according to this grain-oriented magnetic steel sheet in the easy feature of circulation of rolling direction magnetic flux, during Zhou Fangxiang arranges, make the rolling direction of steel plate consistent with the direction of vibration of vibrating body.In order to make up 3 toothed region 85 according to the chimeric mode of the outer peripheral face of the inner peripheral surface of toothed region 85 and yoke portion main body 86, constitute the consistent respectively such inclined plane of the face that makes these cooperations.The yoke portion main body 86 and the toothed region 85 that have such inclined plane by combination, the circulation of the magnetic flux that the coil that twines from slot part 88 produces can reduce as far as possible at least direction that the magnetic flux of grain-oriented magnetic steel sheet is difficult to circulate, be the magnetic flux of right angle crosscut rolling direction, can make full use of the magnetic flux of generation more effectively.
(embodiment 6)
As shown in figure 20, yoke portion 91 is made of 3 toothed region 99 and yoke portion main body 90.3 toothed region 99 are made of grain-oriented magnetic steel sheet, strike out fan-shapedly, and the direction of its punching press is got like this, so that towards the direction that circulates easily at radial direction magnetic flux, promptly towards rolling direction, the toothed region piece 92 at the direction of vibration superimposed layer of vibrating body is made up in the form of a ring, constitute toothed region 99.Yoke portion main body 90 is to make magnetic sheet strike out rectangle, forms the radially laminated body that tubular is arranged at Zhou Fangxiang for making them.The magnetic sheet that strikes out this rectangle is made of grain-oriented magnetic steel sheet, effectively utilizes this grain-oriented magnetic steel sheet in the feature that rolling direction magnetic flux circulates easily, when Zhou Fangxiang arranges, makes the rolling direction of steel plate consistent with the vibrating body direction.It is whole to constitute yoke portion 91 by grain-oriented magnetic steel sheet like this, and the circulation of the magnetic flux that the coil that twines from slot part 93 produces is consistent with the direction that grain-oriented magnetic steel sheet has good magnetic characteristics, can make full use of magnetic flux effectively.
(embodiment 7)
As shown in figure 21, the inner peripheral surface of 3 toothed region 94 of interior yoke portion 96 is shaped as shape that the vibrating body direction of vibration is tilted, and the peripheral shape of yoke portion main body 95 also is the shape that the vibrating body direction of vibration is tilted.Have, toothed region 94 is made of grain-oriented magnetic steel sheet, strikes out fan-shaped again, punching press is according to making pressing direction towards the direction that is easy to circulate in radial magnetic flux, promptly carry out, make toothed region piece 97 be combined into ring-type, constitute toothed region 94 at the direction of vibration superimposed layer of vibrating body towards rolling direction.Yoke portion main body 95 is magnetic sheet to be struck out rectangular-shaped, is to make their to form the radially lamination that tubular is arranged at Zhou Fangxiang.The magnetic sheet that strikes out this rectangle is made of grain-oriented magnetic steel sheet, in the feature that rolling direction magnetic flux circulates easily, when Zhou Fangxiang arranges, makes the rolling direction of steel plate consistent with the direction of vibration of vibrating body according to this grain-oriented magnetic steel sheet what is called.In order to make up 3 toothed region 94 according to the chimeric mode of the inner peripheral surface of the outer peripheral face of yoke portion main body 95 and toothed region 94, form the inclined plane that makes these chimeric faces consistent separately.The yoke portion main body 95 and the toothed region 94 that have such inclined plane by combination, the direction that the magnetic flux that the flowing of the magnetic flux that the coil that twines from slot part 98 produces can be reduced grain-oriented magnetic steel sheet as far as possible is difficult to circulate, be the magnetic flux of right angle crosscut rolling direction, can make full use of the magnetic flux of generation more effectively.
(embodiment 8)
As shown in figure 22, interior yoke portion 101 is made of 3 toothed region 99 and 1 yoke portion main body 100.Toothed region 99 is that magnetic sheet is struck out rectangle, forms the radially laminated body that tubular is arranged at Zhou Fangxiang for making them.The magnetic sheet that strikes out this rectangle is made of grain-oriented magnetic steel sheet, in the feature that rolling direction magnetic flux easily circulates, when Zhou Fangxiang arranges, makes the rolling direction of steel plate consistent with the direction of vibration of vibrating body according to this grain-oriented magnetic steel sheet what is called.Interior yoke portion main body 100 is that magnetic sheet is struck out rectangle, is to make their form the radially laminated body that tubular is arranged at Zhou Fangxiang.This magnetic sheet that strikes out rectangle is made of grain-oriented magnetic steel sheet, and this grain-oriented magnetic steel sheet when Zhou Fangxiang arranges, makes the rolling direction of steel plate consistent with the direction of vibration of vibrating body according to the feature that easily circulates at rolling direction magnetic flux.The mode chimeric according to the inner peripheral surface of the outer peripheral face of yoke portion main body 100 and flank of tooth portion makes up 3 toothed region 99, in order to ensure the spiral space of coil, 3 toothed region etc. is equally spaced arranges.In the interior yoke portion 101 that constitutes like this, because of flowing through the magnetic flux that electric current produces in the coil that is wrapped in slot part 102 places, yoke portion main body become vibrating body direction of vibration, then become radial direction magnetic flux in toothed region.Therefore according to the formation of aforementioned yoke portion 101, wherein any does not need to use the low magnetic characteristic of permeability of the rectangular direction of rolling direction that easily circulates with magnetic flux for direction of principal axis that produces when grain-oriented magnetic steel sheet being struck out E type or C type or radial direction, and can only utilize good characteristic.By yoke portion 101 being divided into yoke portion main body 100 and toothed region 99, constitute the situation of yoke portion than vibrating body by the E type of one or C type, can improve the space factor of vibrating body.In addition, as shown in figure 23, by yoke portion main body 105 being divided into inside yoke portion 104 and outside yoke portion 103 on the direction of vibration of vibrating body, and toothed region 108 is divided into inboard toothed region 107 and outside toothed region 106 at the direction of vibration of vibrating body, can further improves the space factor of yoke portion.
(embodiment 9)
As shown in figure 24, the shape of the yoke portion main body 110 of interior yoke portion 111 is: the shape that the inner peripheral surface shape of 3 toothed region 109 tilts to the vibrating body direction of vibration, the peripheral shape of yoke portion main body 120 also are the shapes that the direction of vibration to vibrating body tilts.Have again, toothed region 109 be will strike out the radially laminated body that after Zhou Fangxiang arranges, obtains of the magnetic sheet of following form: the outer circumferential side of toothed region 109 is parallel with the direction of vibration of vibrating body, and interior all sides are for chimeric and with respect to the direction of vibration inclination of vibrating body with yoke portion main body 110.Yoke portion main body 110 be will strike out the radially laminated body that after Zhou Fangxiang arranges, obtains of the magnetic sheet of following shape: interior all sides of yoke portion main body 110 are parallel with the direction of vibration of vibrating body, and outer circumferential side is for chimeric and oblique with respect to the vibration square neck of vibrating body with toothed region 109.The magnetic sheet of these punching presses is made of grain-oriented magnetic steel sheet, according to the feature of this grain-oriented magnetic steel sheet in the easy circulation of rolling direction magnetic flux, when Zhou Fangxiang arranges, form following structure, yoke portion main body 110 makes the rolling direction of steel plate consistent with the vibrating body direction of vibration, and toothed region 109 makes the rolling direction of steel plate towards radial direction.The yoke portion main body 110 and the toothed region 109 that have inclined plane like this by combination, the magnetic flux that the circulation of the magnetic flux that the coil that twines from slot part 122 produces can reduce the transverse direction electromagnetic steel plate as far as possible is difficult to the magnetic flux of circulating direction, can make full use of the magnetic field of generation more effectively.
(embodiment 10)
As shown in figure 25, interior yoke portion 113 is that magnetic sheet is struck out rectangle, and is crooked to stack direction 90 degree the two ends of this laminated body they overlapping laminated body that makes, and formed the pellet 114 of toothed region.This pellet 124 is formed tubular in the Zhou Fangxiang configuration, obtain yoke portion 113.The magnetic sheet that strikes out this rectangle is made of grain-oriented magnetic steel sheet, and the feature according to this grain-oriented magnetic steel sheet easily circulates at rolling direction magnetic flux when forming laminated body, makes the rolling direction of steel plate consistent with the direction of vibration of vibrating body.The circulation of the magnetic flux that the electric current that the interior yoke portion 113 that constitutes is like this flow through by the coil portion that twines on slot part 115 produces is that the thickness of slab direction at grain-oriented magnetic steel sheet flows.Therefore, because the direction that the magnetic flux of grain-oriented magnetic steel sheet is easily circulated is consistent with stack direction, institute is so that efficient magnetic flux circulation becomes possibility.
The possibility of industrial utilization
The laminated magnetic core that the present invention relates to use in linear actuator advances easily by the present invention The installation of row laminated magnetic core.
Accompanying drawing reference marks list
11 linear actuators
12 coil portions
13 interior yoke sections
14 outer yoke sections
15a, the b permanent magnet pieces
16 vibrating bodies
17 efferents
21 recesses
22 magnetic sheets
25 connect
Claims (20)
1. a laminated magnetic core that makes cylindrical body at many pieces of magnetic sheets of all direction laminations is characterized by, and utilizes the connecting portion that extends from described magnetic sheet end to connect adjacent magnetic sheet.
2. laminated magnetic core according to claim 1 is characterized by, and magnetic sheet and connecting portion are the integrally formed things by same steel plate integrated punching.
3. laminated magnetic core according to claim 2 is characterized by, and the punching press magnetic sheet makes it vertically become the rolling direction of steel plate.
4. laminated magnetic core according to claim 3 is characterized by, and magnetic sheet is the electromagnetic steel plate of 2 directivity.
5. laminated magnetic core according to claim 4 is characterized by, and makes magnetic sheet vertically identical with 2 grain-oriented magnetic steel sheet rolling directions.
6. laminated magnetic core according to claim 1 makes the Zhou Fangxiang of adjacent magnetic sheet identical with connecting portion length at interval.
7. laminated magnetic core according to claim 1, it is characterized by, adjacent magnetic sheet on the top of laminated magnetic core outer circumferential side or the bottom one of them have connecting portion, opposition side at this connecting portion possesses clearance portion, described connecting portion is on the Zhou Fangxiang of laminated magnetic core, and top, bottom, top, bottom alternately are provided with.
8. a laminated magnetic core that makes cylindrical body at many pieces of magnetic sheets of Zhou Fangxiang superimposed layer is characterized by, and this laminated magnetic core is cut apart vertically.
9. a laminated magnetic core is at many pieces of magnetic sheets of Zhou Fangxiang superimposed layer, and forms the cylindrical body in gap at the outer circumferential side of adjacent magnetic sheet, it is characterized by, and utilizes molded this laminated magnetic core of resin compounded material that comprises the magnetic powder.
10. laminated magnetic core according to claim 9 is characterized by, and comprises the Magnaglo more than the 50 volume % in the resin compounded material.
11. laminated magnetic core according to claim 10 is characterized by, Magnaglo is an iron powder.
12. a laminated magnetic core that makes cylindrical body at many pieces of magnetic sheets of Zhou Fangxiang superimposed layer is characterized by, this laminated magnetic core is by constituting in the radially laminated body of all direction lamination magnetic sheets with in the axial laminated body of direction of principal axis lamination magnetic sheet.
13. laminated magnetic core according to claim 12 is characterized by, radially laminated body is the laminated body of grain-oriented magnetic steel sheet, and the direction that the magnetic flux of this grain-oriented magnetic steel sheet circulates easily is identical with the direction of principal axis of laminated magnetic core.
14. laminated magnetic core according to claim 12 is characterized by, axially laminated body is the laminated body of grain-oriented magnetic steel sheet, and the direction that the magnetic flux of this grain-oriented magnetic steel sheet circulates easily is identical with the radial direction of laminated magnetic core.
15. laminated magnetic core according to claim 12 is characterized by, and is divided into axial laminated body a plurality of along Zhou Fangxiang.
16. one kind at many pieces of magnetic sheets of lamination radially and make the laminated magnetic core of cylindrical body, it is characterized by, the two ends of described cylindrical body are to the cylindrical body outside curve.
17. laminated magnetic core according to claim 16 is characterized by, laminated magnetic core is divided into a plurality of at Zhou Fangxiang.
18. laminated magnetic core according to claim 16 is characterized by, laminated magnetic core constitutes by grain-oriented magnetic steel sheet, to another end magnetic flux is circulated from an end of laminated magnetic core easily.
19. a linear actuator comprises: the outer yoke portion of cylindrical body, interior yoke portion of the inboard of yoke portion outside the space is configured in this, has vibrating body at the permanent magnet of described space internal vibration, coil portion with the slot part that is configured in described outer yoke portion or described interior yoke portion is characterized by
With the outer yoke portion of described coil portion or interior yoke portion one of them be with many pieces of magnetic sheet laminations become cylindrical body according to each described laminated magnetic core of claim 1～18.
20. compressor that uses linear actuator as power source, this linear actuator comprises: the outer yoke portion of cylindrical body, be configured in the interior yoke portion of the inboard of this outer yoke portion by means of the space, has vibrating body at the permanent magnet of described space internal vibration, coil portion with the slot part place that is configured in described outer yoke portion or described interior yoke portion, it is characterized by
Having the outer yoke portion of described coil portion or one of them of interior yoke portion is each described laminated magnetic core of claim 1～18.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000292051 | 2000-09-26 | ||
| JP2000292051 | 2000-09-26 | ||
| JP2000320614 | 2000-10-20 | ||
| JP2000330242 | 2000-10-30 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01816276.2A Division CN1284291C (en) | 2000-09-26 | 2001-09-26 | Linear gearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1783672A true CN1783672A (en) | 2006-06-07 |
Family
ID=36773529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510114792 Pending CN1783672A (en) | 2000-09-26 | 2001-09-26 | Laminated magnetic core of linear actuator and its producing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1783672A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347218A (en) * | 2018-11-30 | 2019-02-15 | 卧龙电气集团股份有限公司 | Laminated core unit and laminated core |
| CN109617361A (en) * | 2019-01-17 | 2019-04-12 | 南京理工大学 | A kind of single-phase AC permanent-magnet synchronous linear generator |
| CN111742475A (en) * | 2018-02-23 | 2020-10-02 | Lg电子株式会社 | Linear motor and linear compressor provided with same |
-
2001
- 2001-09-26 CN CN 200510114792 patent/CN1783672A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111742475A (en) * | 2018-02-23 | 2020-10-02 | Lg电子株式会社 | Linear motor and linear compressor provided with same |
| US11606015B2 (en) | 2018-02-23 | 2023-03-14 | Lg Electronics Inc. | Linear motor and linear compressor having same |
| CN111742475B (en) * | 2018-02-23 | 2023-05-23 | Lg电子株式会社 | Linear motor and linear compressor provided with same |
| CN109347218A (en) * | 2018-11-30 | 2019-02-15 | 卧龙电气集团股份有限公司 | Laminated core unit and laminated core |
| CN109617361A (en) * | 2019-01-17 | 2019-04-12 | 南京理工大学 | A kind of single-phase AC permanent-magnet synchronous linear generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1284291C (en) | Linear gearing device | |
| CN1225076C (en) | Linear motor | |
| CN1104081C (en) | Reluctance motor and compressor-driving reluctance motor | |
| CN1037646C (en) | Rotor of motor having nobrush and their production method | |
| CN1076135C (en) | Low cost multi-pole motor constructions and methods of manufacture | |
| CN1255926C (en) | Synchronous motor and compressor | |
| CN1874114A (en) | Production method for rotating electric machine and stator coils, and electric power steering motor | |
| CN1211904C (en) | Structure for stator for reciprocating motor | |
| CN1933297A (en) | Electric rotating machine | |
| CN1497818A (en) | Permanent magnet slewing motor | |
| CN1819409A (en) | Axial air-gap electronic motor and method for manufacturing the same | |
| CN101053139A (en) | Motor generator and automobile carrying the same | |
| CN1340238A (en) | An electric multipole motor/generator with axial magnetic flux | |
| CN1750358A (en) | Stator of motor and method of manufacturing the same | |
| CN1193482C (en) | Reciprocating electric motor | |
| CN1842954A (en) | Radial airgap, transverse flux motor | |
| CN1741347A (en) | Stator of motor | |
| CN1249896C (en) | Motor device and its permanant magnet | |
| CN1578072A (en) | Electric motor and method of making the same | |
| CN1270429C (en) | Reciprocating motor | |
| CN1310507A (en) | Motor stator-core and its producing method, and electric motor and compressor | |
| CN1848612A (en) | Motor | |
| CN1771644A (en) | Stator core for linear motor | |
| CN1237683C (en) | Stator for reciprocating motor and its manufacturing method | |
| CN1256800C (en) | Reciprocating motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |