CN101924409A - Unit coil, coil assembly and ironless linear motor - Google Patents
Unit coil, coil assembly and ironless linear motor Download PDFInfo
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- CN101924409A CN101924409A CN2009101499463A CN200910149946A CN101924409A CN 101924409 A CN101924409 A CN 101924409A CN 2009101499463 A CN2009101499463 A CN 2009101499463A CN 200910149946 A CN200910149946 A CN 200910149946A CN 101924409 A CN101924409 A CN 101924409A
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Abstract
The invention discloses a unit coil, a coil assembly and an ironless linear motor. The unit coil comprises a plurality of sub-coils which are mutually arranged in parallel and are respectively bent at least once at the non-acting edge in the axial direction; the coil assembly comprises a plurality of three-phase unit coil groups which are arranged along the running direction, wherein each three-phase unit coil group is formed by arranging three same unit coils in a staggered and overlapped mode and then packaging by a resin layer, and each unit coil is formed by arranging a plurality of bent sub-coils in an overlapped mode; and the plurality of bent sub-coils are overlapped for sufficient thickness or arranged for sufficient width to obtain sufficient thrust, and a magnetic track is matched to form an ironless linear motor. In the structure, by utilizing the unit coils formed in a staggered and overlapped arrangement mode, the space requirement of the coil assembly can be effectively reduced, and the sub-coils can be formed and manufactured easily and can not be damaged easily.
Description
Technical field
The invention relates to unit coil, coil assembly and coreless type linear motor, be meant that especially a kind of unit coil includes each other a plurality of and puts and have the subcoil of at least one bending at axial inactive edge respectively, and a kind of coiling, arrangement design and the mode of connection, and a kind of coreless type linear motor that comprises this coil assembly and a track about coil assembly.
Background technology
Existing coreless type linear motor, its coil arrangement mode can be divided into three kinds of non-overlapped centralized winding, overlapping centralized winding and printed circuit board (PCB)s etc.; Fig. 9 and Figure 10 are the arrangement mode of centralized winding, and it is that a plurality of unit coil 10 set are arranged, and wherein each unit coil is represented a phase U, V, the W of linear motor, and cooperates the pole pitch of permanent magnet 101 to produce propulsive force; The difference of non-overlapped formula shown in Figure 9 and eclipsed form shown in Figure 10 is whether overlapping situation is arranged between unit coil and the unit coil when arranging; Figure 11 shows that the arrangement mode of printed circuit board (PCB), it is to utilize the circuit board making technology that coil 102 is taken shape in above the circuit board 103.But the arrangement mode of printed circuit board (PCB) can only be applicable to the design of little propulsive force based on the restriction of space and coil pitch of the laps number; Though the arrangement mode of non-overlapped centralized winding can produce bigger propulsive force, the hollow of coil partly has many spaces still can't effectively use; And the arrangement mode of overlapping centralized winding can with in the arrangement mode of non-overlapped centralized winding the space that can't use fill up, so could produce the arrangement mode that is better than printed circuit board (PCB) and the arrangement mode of non-overlapped centralized winding and in minimum space, produce maximum propulsive force.
The arrangement mode of commonly using overlapping centralized winding has a variety of, as US 4,758,750 disclosed unit coil arrangement modes are to be fixed in an insulation component after three overlapping in regular turn arrangements of unit coil, form a flat three phase units coil groups, again with the linear motor coil sub-assembly of a plurality of flat three phase units coil groups permutation and combination.Mode must make up more flat three phase units coil groups and just can reach if will produce bigger propulsive force according to this.Yet this will make the weight of linear motor coil assembly increase, and the joint undercapacity between each flat three phase units coil groups can cause rigidity to descend.
According to aforesaid drawbacks, the disclosed coil arrangement mode of WO 2004/017500A1 has been improved the overlapping mode of unit coil, wherein unit coil is the loop that is made of a sealing two vertical direction action edge and two axial inactive edges, and with unit coil via suitable bending after, unit coil is overlapping and can axially closely arranges and form the three phase units coil groups at axial inactive edge.Because a plurality of three phase units coil groups can similarly axially continuous staggered overlapping arrangement form a coil assembly, and the not enough problem of the rigidity that can not produce joining place between aforementioned each flat three phase units coil groups, and can improve the heavier shortcoming of weight of linear motor coil assembly.Unit coil must have more number of turns in order to produce bigger propulsive force, therefore will increase the thickness or the width of unit coil, and thicker unit coil can increase the degree of difficulty of bending and molding.In addition, thickness after the unit coil bending is the thickness of 1.5 times of former unit coils at least, with reach can be overlapping purpose, and when being combined into the linear motor coil assembly for each unit coil is done series-parallel wiring, the position of will headspace putting as wiring is so need bigger space on the thickness at axial inactive edge place.Therefore, the gross thickness of coil assembly at axial inactive edge place is at least reservation wiring space thickness and adds 2 times unit coil thickness; Its width will become the recruitment of loop length fully and cause space requirement bigger on length when the bigger unit coil of width is being bent to axial inactive edge in addition.
As shown in figure 12, for commonly using single forming unit coil 7, with this overlapping three phase units coil groups 31 that rearranges, then the thickness of the axial inactive edge of unit coil 7 is that 2 times T6 adds and reserves wiring space thickness T 7.Yet the thickness T 6 of forming unit coil 7 is big more, is difficult to moulding more, and the difference of inboard crooked process radius R31, R33 and outside crooked process radius R32, R34 is also just big more, and the influence that less inboard crooked process radius R31, R33 will cause defective insulation.
As Figure 13 (a) and (b), if the wider width of unit coil 8, establishing its width is W3, and then coil width becomes the height W3 of axial two inactive edges behind the coil molding fully, therefore the coil total height becomes big, also increases linear motor coil assembly 3 combined altitudes as shown in Figure 1 simultaneously.
As Figure 14 (a) and (b), subcoil 9b is the winding mode of commonly using, adopt the mode that vertically stacks, so its hollow is 92 no convergent situations and vertically upward partly, be coil hollow length L 4=L5 partly, after this can cause coil 9b bending forming, shown in Figure 14 (c), commonly use moulding subcoil 9b ', its axial inactive edge 93 ' the end be skewed, its reason is that the interior outside length of formed coil 9b ' is identical, be L4 '=L5 ', the bigger crooked process radius R5 ' of outside length L 5 ' comprise, and the crooked process radius R4 ' that inside length L4 ' is comprised is less, so the axial inactive edge 93 ' outside of causing formed coil 9b ' is than contracting in the inboard, shown in Figure 14 (d).The thickness demand of linear motor coil assembly 3 will be because of being skewed axial inactive edge 93 ' increase.
As shown in figure 15, commonly use the mode of connection between the unit coil of forming coil assembly, can adopt equivalent electric circuit series wiring mode to produce than high thrust as Figure 15 (a), or produce big speed as the equivalent electric circuit of Figure 15 (b) mode of connection in parallel, also or utilize the linear motor that produces different qualities as the equivalent electric circuit series-parallel connection mode of Figure 15 (c).Yet this mode of connection only is applicable to the wiring between unit coil, if still can't reach desired linear motor characteristic, must utilize alternate manner to reach.
Summary of the invention
Main purpose of the present invention, be to provide a kind of unit coil, this unit coil comprises each other a plurality of and puts and at axial inactive edge the subcoil of bending is arranged respectively, make the thickness of subcoil to reduce, the radius of curvature of its bending can increase, also reduce the degree of difficulty of bending subcoil, easy to manufacture.
Main purpose of the present invention, also be to provide a kind of design that is applied to the coil assembly of linear motor, no matter all moulding is easy to make its thickness of unit coil of forming coil assembly, and can increase bending radius during the subcoil moulding and improve insulating capacity, and then increase the useful life of subcoil.
Another object of the present invention is to provide a kind of design of coil assembly, can effectively reduce the required thickness of coil axial inactive edge of when bending or the required length of axial inactive edge when crooked, so that the coil assembly of more saving the space to be provided.
A further object of the present invention is to provide a kind of coreless type linear motor of more saving the space.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of unit coil comprises a plurality of subcoils, and body in the form of a ring has vertical direction action edge and axial inactive edge to this subcoil by an insulation conductor wire continued circling, and aforementioned subcoil has at least one bending and each other and put at axial inactive edge.
Above-mentioned a plurality of juxtaposed each other subcoil is overlapping and put at thickness direction by a plurality of wide subcoils.
Above-mentioned a plurality of juxtaposed each other subcoil is that the subcoil by a plurality of uniform thickness staggers on Width and closely and put.
Above-mentioned a plurality of juxtaposed each other subcoil is by a plurality of not wide subcoils with one heart and put.
The axial inactive edge of above-mentioned subcoil has at least one bending, and this axial inactive edge is flush shape.
A kind of coil assembly, the three phase units coil groups that comprises a plurality of staggered overlapping arrangements in the axial direction, and the resin bed of the above-mentioned three phase units coil groups of an encapsulation, wherein this three phase units coil groups comprises three groups of identical unit coils, and every group of unit coil comprises each other a plurality of and put and have the subcoil of at least one bending at axial inactive edge respectively.
Above-mentioned a plurality of juxtaposed each other subcoil is overlapping and put at thickness direction by a plurality of wide subcoils.
Above-mentioned a plurality of juxtaposed each other subcoil is that the subcoil by a plurality of uniform thickness staggers on Width and closely and put.
Above-mentioned a plurality of juxtaposed each other subcoil is by a plurality of not wide subcoils with one heart and put.
The axial inactive edge of above-mentioned subcoil has at least one bending, and this axial inactive edge is flush shape.
A kind of coreless type linear motor comprises a track and a coil assembly; This track comprises a plurality of permanent magnets of the positive and negative storing of two row, is preset with an action space between a plurality of permanent magnets of the positive and negative storing of these two row; This coil assembly comprises the three phase units coil groups of a plurality of staggered overlapping arrangements in the axial direction, and the resin bed of the above-mentioned three phase units coil groups of an encapsulation, wherein resin bed is positioned at the action space of track, and this three phase units coil groups comprises three groups of identical unit coils, and this unit coil comprises each other a plurality of and puts and have the subcoil of at least one bending at axial inactive edge respectively.
Above-mentioned a plurality of juxtaposed each other subcoil is overlapping and put at thickness direction by a plurality of wide subcoils.
The axial inactive edge of above-mentioned a plurality of subcoils has two bendings, and these two bendings have identical radius of curvature.
In above-mentioned a plurality of subcoil, the vertical-direction length of upper strata subcoil is shorter than the vertical-direction length of lower floor subcoil.
The coil section zone of the axial inactive edge of upper strata subcoil of said units coil is on the gross thickness of unit coil.
Above-mentioned a plurality of juxtaposed each other subcoil is that the subcoil by a plurality of uniform thickness staggers on Width and closely and put.
Above-mentioned a plurality of juxtaposed each other subcoil is by a plurality of not wide subcoils with one heart and put.
Each subcoil mode of connection of said units coil is series, parallel or connection in series-parallel mixing wiring.
After adopting such scheme, coreless type linear motor provided by the present invention comprises a track and a coil assembly, wherein track comprises a plurality of permanent magnets of the positive and negative storing of two row, to constitute the field regions of a row positive and negative alternate, between a plurality of permanent magnets of the positive and negative storing of these two row, be preset with an action space; This coil assembly comprises a plurality of overlapping in the axial direction staggered three phase units coil groups, and the resin bed of the above-mentioned three phase units coil groups of an encapsulation, and wherein this resin bed is positioned at the action space of above-mentioned track; This three phase units coil groups comprises three groups of overlapping staggered same unit coils, and wherein unit coil comprises each other a plurality of and puts and at axial inactive edge the subcoil of bending is arranged respectively.Coil assembly produces propulsive force and motion mutually via the magnetic field that three-phase current control produces magnetic flux and track.If above-mentioned track is fixedly become stator, then coil assembly is a mover; Otherwise if coil assembly is fixed as stator, then track is a mover.
Unit coil comprises a plurality of subcoils, and these a plurality of subcoils are the body in the form of a ring by an insulation conductor wire continued circling respectively, and it has vertical direction action edge and axial inactive edge; The axial inactive edge of aforementioned a plurality of subcoils also has bending and each other and put, and herein each other and put and comprise following kenel: a plurality of wide subcoils are overlapping and put at thickness direction; A plurality of uniform thickness subcoils stagger on Width and closely and put; A plurality of not wide subcoils with one heart and put.
In other words, unit coil be can be and will the subcoil of a plurality of thinner thicknesses of bending be arranged at the overlapping thicker unit coil of the same thickness of width that combines of thickness direction at axial inactive edge by a plurality of subcoils mode of rearranging after bending.Because the thinner thickness of subcoil, and the radius of curvature of required bending can increase, so can significantly reduce the degree of difficulty of bending coil, therefore making easily; The radius of curvature of the required bending of subcoil of thinner thickness can be bigger in addition, except subcoil the bending place be not easy because of bending forming impaired, and the heat energy that subcoil passes through to be produced because of electric current also is difficult for being accumulated in the subcoil bending place, thereby the useful life that can increase subcoil and stack the unit coil that forms.With the subcoil of thinner thickness the thickness of the overlapping unit coil that forms can be unrestricted, according to required propulsive force size, stack out the unit coil of adequate thickness by subcoil, and be not subjected to the blocked up unpliant restriction of single unit coil.A plurality of subcoils of component units coil wherein, the upper strata subcoil can appropriateness reduce vertical-direction length, the vertical-direction length that is upper coil is shorter than the vertical-direction length of inner coil, and the coil section zone of the axial inactive edge of upper strata subcoil of component units coil is on the gross thickness of unit coil, so the unit coil integral thickness after reducing to make up.
The mode that unit coil is rearranged after bending by a plurality of subcoils can be will have the narrower subcoil of a plurality of width of bending at axial inactive edge, closely be arranged in the unit coil of the wider width that is of uniform thickness, and utilize the axial inactive edge of subcoil overlapping at thickness direction, and reduce the demand that makes up back unit coil vertical-direction length, and can the appropriate overall height requirement of adjusting the linear motor coil assembly.
Unit coil be can be by a plurality of subcoils mode of rearranging after bending and will be varied in size by bending a plurality of at axial inactive edge but the narrower subcoil of concentric shape of tool and width is formed the unit coil of the wider width that is of uniform thickness with concentric arrangement.Utilize axial inactive edge overlapping at thickness direction, reduce the demand of combination back unit coil vertical-direction length not increasing under the thickness, and can appropriateness adjust the overall height requirement of linear motor coil assembly.
Unit coil also can mix use to reach purpose of the present invention by above-mentioned dual mode by the mode that a plurality of subcoils rearrange after bending.
Before subcoil does not bend, its can but inessentially be gradually-reducing shape along thickness direction at axial inactive edge, before subcoil does not bend at axial inactive edge when thickness direction is gradually-reducing shape, to make after the subcoil bending still can proper alignment, subcoil is laid out subcoil in advance according to the size after the expection bending partly be tapered shape when winding the line at thickness, its convergent is defined as coil can be longer than the vertical-direction length of opposite side in the vertical-direction length of thickness direction one side, so subcoil dwindles gradually along the vertical-direction length of thickness direction.The subcoil that this thickness direction before not bending presents gradually-reducing shape behind bending forming, the axial inactive edge of moulding subcoil flush shape, therefore can reduce the required thickness of subcoil bending.
Because unit coil is by a plurality of subcoils and puts to arrange and form, so can utilize each subcoil wiring of this element coil more neatly, for example to provide identical currents under the coil assembly situation, the thrust constant of the linear motor coil assembly that series wiring is formed can be bigger than the mode of connection in parallel; Relatively, the back electromotive force constant that produced of the linear motor coil assembly formed of the mode of connection in parallel is little than series system.Another kind of then be the mode of connection in series-parallel mixing wiring, can produce different thrust constants and back electromotive force constant according to the result of equivalent electric circuit.In general, linear motor can adopt the series, parallel and the mode of connection in series-parallel mixing wiring to reach the linear motor of different qualities at the wiring between unit coil.Each subcoil wiring of component units coil of the present invention also can be divided into series, parallel and connection in series-parallel mixing wiring; Each subcoil wiring in the unit coil is if adopt mode in parallel, and then linear motor can produce big speed; Otherwise each subcoil wiring of unit coil is if adopt series system, and linear motor can produce than high thrust.Therefore by series, parallel between each subcoil of unit coil or connection in series-parallel mixing wiring, can reach wider linear motor characteristic.
Description of drawings
Fig. 1 is the track of coreless type linear motor and the constitutional diagram of coil assembly;
Fig. 2 is the permanent magnet arrangement schematic diagram of the track of coreless type linear motor;
Fig. 3 (a) is the coil assembly structural map of disclosed coreless type linear motor;
Fig. 3 (b) is the partial enlarged drawing of the A part of Fig. 3 (a);
Fig. 4 (a) is the constitutional diagram of unit coil group first embodiment of disclosed coreless type linear motor;
Fig. 4 (b) is the A-A cutaway view of Fig. 4 (a);
Fig. 4 (c) is the constitutional diagram of the three phase units coil groups of disclosed coreless type linear motor;
Fig. 4 (d) is the top view of Fig. 4 (c);
Fig. 4 (e) is the front view of Fig. 4 (c);
Fig. 5 is the cutaway view of disclosed coreless type linear motor unit coil second embodiment;
Fig. 6 (a) is the constitutional diagram of disclosed coreless type linear motor unit coil the 3rd embodiment;
Fig. 6 (b) is the B-B cutaway view of Fig. 6 (a);
Fig. 6 (c) is the constitutional diagram of the three phase units coil groups after the combination;
Fig. 7 (a) is the constitutional diagram of disclosed coreless type linear motor unit coil the 4th embodiment;
Fig. 7 (b) is the C-C cutaway view of Fig. 7 (a);
Fig. 7 (c) is the constitutional diagram of the three phase units coil groups after the combination;
Fig. 8 (a) is the subcoil front view that disclosed thickness direction is gradually-reducing shape;
Fig. 8 (b) is the D-D cutaway view of Fig. 8 (a);
Fig. 8 (c) is the outside drawing of formed coil among Fig. 8 (a);
Fig. 8 (d) is the E-E cutaway view of Fig. 8 (c);
Fig. 9 is the coil arrangement mode schematic diagram of non-overlapped centralized winding;
Figure 10 is the coil arrangement mode schematic diagram of overlapping centralized winding;
Figure 11 is the coil arrangement mode schematic diagram of printed circuit board (PCB);
Figure 12 is a front view of commonly using overlapping centralized coil assembly;
Figure 13 (a) is a forming unit coil of commonly using wider width;
Figure 13 (b) is the F-F cutaway view of Figure 13 (a);
Figure 14 (a) is a front view of commonly using coil;
Figure 14 (b) is the G-G cutaway view of Figure 14 (a);
Figure 14 (c) is an oblique view of commonly using formed coil;
Figure 14 (d) is the H-H cutaway view of Figure 14 (c);
Figure 15 (a) is the schematic equivalent circuit of the subcoil series wiring of unit coil;
Figure 15 (b) is the subcoil of unit coil and the schematic equivalent circuit of tie;
Figure 15 (c) is the schematic equivalent circuit of the subcoil connection in series-parallel mixing wiring of unit coil.
The main element symbol description
1 coreless type linear motor
2 tracks
3 coil assemblies
4,5,6,7, unit 8 coil
4 ' unit coil
7,7a, 7b, 7c unit coil
8,8a, 8b, 8c unit coil
9a coil hollow partly is the subcoil of gradually-reducing shape
9b commonly uses subcoil
The axial inactive edge of 9a ' is the subcoil of the moulding of flush shape
9b ' commonly uses the moulding subcoil
10 unit coils
21 permanent magnets
31 three phase units coil groups
31 ' three phase units coil groups
32 resin beds
32 ' three phase units coil groups
41 lower floor's subcoils
42 upper strata subcoils
The subcoil that 42 ' length is short
The hollow of 43 unit coils 4 partly
The vertical direction action edge of 44 unit coils 4
The hollow of 53 unit coils 5 partly
The vertical direction action edge of 54 unit coils 5
The hollow of 63 unit coils 6 partly
The vertical direction action edge of 64 unit coils 6
71, the narrower subcoil of 72 width
81, the narrower subcoil of 82 width
91 and 92 subcoil hollows partly
92 ', the axial inactive edge of 93 ' subcoil
101 permanent magnets
102 coils
103 circuit boards
111, the circuit element of 112,113,114 coil equivalent inductances
The subcoil coil section place that 421 ' length is short
711, the narrower subcoil hollow part of 721 width
712, the narrower subcoil vertical direction action edge of 722 width
811, the narrower subcoil hollow part of 821 width
812, the narrower subcoil vertical direction action edge of 822 width
The partial enlarged drawing of A coil assembly
L1, L4 subcoil hollow is the length of a side partly
L2, L5 subcoil hollow is opposite side length partly
The enamelled wire of L 3, L6 subcoil stacks thickness
L1 ' and L4 ' moulding subcoil hollow is the length of a side partly
L2 ' and L5 ' moulding subcoil hollow part opposite side length
L3 ' stacks thickness with the enamelled wire of L6 ' moulding subcoil
The crooked process radius of R1 ' and R2 ' subcoil
R4 ' and R5 ' commonly use the crooked process radius of subcoil
The crooked process radius of R11, R12, R13, R14 lower floor subcoil
The crooked process radius of R21, R22, R23, R24 upper strata subcoil
R31, R32, R33, R34 commonly use the crooked process radius of single unit coil
The thickness of T1 lower floor subcoil
The thickness of T2 upper strata subcoil
The thickness of T6 unit coil
The shared thickness of axial inactive edge coil of T6 ' unit coil
The T7 coil assembly is reserved the space desired thickness that wiring is put
U U phase
V V phase
W W phase
The width of W1 subcoil
W2 subcoil hollow width partly
The moulding subcoil width of the single broad of W3
The moulding subcoil width that W4, W5 are narrower
Embodiment
In order to further describe structure of the present invention, be elaborated below in conjunction with the accompanying drawing of embodiment.
As shown in Figure 1, coreless type linear motor 1 is made up of a track 2 and a coil assembly 3, and wherein track 2 comprises a plurality of permanent magnets 21 of the positive and negative storing of two row, as shown in Figure 2, and to constitute the field regions of a row positive and negative alternate; As Fig. 3 (a) and (b), this coil assembly 3 is by a plurality of three-phase U, V, W unit coil group 31 axially-aligned that is overlapping, and encapsulated via resin bed 32 to form again.
As Fig. 4 (a) and (b), will to be that two subcoils of T1 and T2 41,42 are overlapping by difference bending and thickness at axial inactive edge form the unit coil 4 that the same thickness of a width is T1+T2 to the first embodiment of the present invention.Based on the thinner thickness of indivedual subcoils 41,42, so easy bending forming.Levels subcoil 42,41 herein also can be more than two at axial inactive edge by the complex operator coil of bending along the overlapping thicker unit coil of the same thickness of a width of forming of thickness direction.Based on the subcoil thinner thickness, so inside and outside crooked process radius R11-R12, R13-R14, R21-R22 and the R23-R24 gap of subcoil 41,42 are less, still can keep the good insulation performance effect after the moulding, easier moulding and can be not impaired.
Shown in Fig. 4 (a), the width of unit coil 4 is W1, and hollow partly 43 width is W2, and wherein W2 is at least the twice of W1.As Fig. 4 (c), (d) shown in reaching (e), unit coil 5 is identical with unit coil 4 with 6, represent the unit coil 4 of W phase oppositely to place, vertical direction action edge 44 up, the unit coil 5 that to represent the U phase again and the two vertical direction action edge 54 and 64 of representing V unit coil 6 mutually are closely side by side, insert the hollow part 43 of unit coil 4 then, form interlaced arrangement three phase units coil groups 31, its gross thickness and each unit coil 4,5,6 is identical, and it is similarly axially closely staggered in conjunction with the coil assembly 3 that constitutes linear motor with a plurality of three phase units coil groups 31 that the rest may be inferred.
The unit coil 4 of the plural layer combination shown in Fig. 4 (a) can further be improved second embodiment into Fig. 5.Wherein lower floor's subcoil 41 is constant, with the contraction in length of script upper strata subcoil 42 become shorter subcoil 42 ', formation unit coil 4 ', the coil section 421 of inactive edge of wherein short subcoil 42 ' axially ' on the gross thickness T1+T2 of unit coil, the interference that causes when avoiding unit coil 4 ' be overlapping to form three-phase coil group 31.So can make the thickness T 6+T7 of the unit coil 4 axial inactive edges of originally finishing be reduced to T6 '+T7, and then reduce the thickness of finishing of linear motor coil assembly 3.
The third embodiment of the present invention shown in Fig. 6 (a), combines the unit coil 7a of the wider width that is of uniform thickness with two axial tight staggered subcoils 71,72, and wherein W4 and W5 width sum are equivalent to the W3 among Figure 13.The subcoil 71 and 72 of moulding has hollow part 711 and 721, the vertical direction action edge 722 of subcoil 72 is inserted the hollow part 711 of subcoil 71, the vertical direction action edge 712 of snap subcoil 71 then, again subcoil 71 is alignd with 722 upper limbs with 72 vertical direction action edge 712, can component units coil 7a.Unit coil known among Figure 13 8 is compared with unit coil 7a of the present invention, unit coil 7a coil bending place is to axially the length W4 of inactive edge can be littler to the length W3 of axial inactive edge than unit coil 8 coil bending places, and the combined altitudes of reduction coil assembly 3, therefore wherein the length W5 that is reduced can be dispensed to the recruitment of thickness, is adjusted the recruitment of height and thickness.Two subcoils 71,72 herein also can be the staggered vertically unit coil 7a that closely rearranges the wider width that is of uniform thickness of a plurality of subcoils that bending is arranged at axial inactive edge more than two.Fig. 6 is a rough schematic, and the actual bending angle of two narrower subcoils 71,72 not necessarily is 90 degree among the figure.Shown in Fig. 6 (c), utilize the mode of aforementioned component three phase units coil groups 31, with unit coil 7a, 7b, the 7c combination can form three phase units coil groups 31 '
The fourth embodiment of the present invention on width, be divided into as shown in Figure 7 by outer shroud subcoil 81 and in ring coil 82, wherein the interior ring coil 82 of width W 5 places the hollow part 81 of the outer shroud subcoil 81 of width W 4, be combined into the unit coil 8a that the width that is of uniform thickness is W3, shown in Fig. 7 (a).It is W4 that this execution mode not only can make unit coil 8a coil bending place to the length reduction of axial inactive edge, and axially inactive edge thickness remains W5, shown in Fig. 7 (b).The foregoing description also can be combined the unit coil 8a of the wider width that is of uniform thickness by the ring-type subcoil concentric arrangement of different sizes more than two.But with the same manner component units coil 8b and 8c, and then composition three phase units coil groups 32 ', shown in Fig. 7 (c).
As shown in Figure 8, the subcoil 9a that the present invention improved is when coiling, can lay out the hollow part 91 of subcoil 9a in advance according to the shape after the expection bending along the thickness direction tapered shape, be L2＞L1, L2=L1+ (R2 '-R1 ') π wherein, so after subcoil 9a bending forming is subcoil 9a ', the hollow of subcoil 9a ' partly length is still kept L1=L1 ', L2=L2 ' and L3=L3 ', wherein L1 ' with the axial inactive edge 92 of subcoil ' in total length (R2 '-R1 ') π that contracts shortened, so the flush shape of the axial inactive edge 92 of moulding subcoil 9a ' ' promptly become.This improvement helps the assembled arrangement and reduction thickness of linear motor coil assembly 3.
As previously mentioned, the unit coil among the present invention includes a plurality of juxtaposed subcoils, and with Figure 15 (a) and (b) and equivalent inductance circuit element 111,112,113 (c) and 114 expressions.The subcoil mode of connection of unit coil can be the series wiring as Figure 15 (a), the also tie and the connection in series-parallel mixing wiring shown in Figure 15 (c) of Figure 15 (b).Wherein, the thrust constant of Figure 15 (a) series wiring generation is bigger.Relatively, the back electromotive force constant of Figure 15 (b) and tie is less.Shown in Figure 15 (c), be 4 unit coils that sub-coil is formed, respectively the subcoil 111 of unit coil is connected with 112 and subcoil 113 is connected with 114, again with this two circuit parallel connection of connecting, this mode of connection can be done modulation to thrust constant and back electromotive force constant, to reach required linear motor characteristic.
Claims (18)
1. unit coil, it is characterized in that: comprise a plurality of subcoils, body in the form of a ring has vertical direction action edge and axial inactive edge to this subcoil by an insulation conductor wire continued circling, and aforementioned subcoil has at least one bending and each other and put at axial inactive edge.
2. unit coil as claimed in claim 1 is characterized in that: described a plurality of juxtaposed each other subcoils are overlapping and put at thickness direction by a plurality of wide subcoils.
3. unit coil as claimed in claim 1 is characterized in that: described a plurality of juxtaposed each other subcoils are that the subcoil by a plurality of uniform thickness staggers on Width and closely and put.
4. unit coil as claimed in claim 1 is characterized in that: described a plurality of juxtaposed each other subcoils are by a plurality of not wide subcoils with one heart and put.
5. unit coil as claimed in claim 1 is characterized in that: the axial inactive edge of described subcoil has at least one bending, and this axial inactive edge is flush shape.
6. coil assembly, it is characterized in that: the three phase units coil groups that comprises a plurality of staggered overlapping arrangements in the axial direction, and the resin bed of the above-mentioned three phase units coil groups of an encapsulation, wherein this three phase units coil groups comprises three groups of identical unit coils, and every group of unit coil comprises each other a plurality of and put and have the subcoil of at least one bending at axial inactive edge respectively.
7. coil assembly as claimed in claim 6 is characterized in that: described a plurality of juxtaposed each other subcoils are overlapping and put at thickness direction by a plurality of wide subcoils.
8. coil assembly as claimed in claim 6 is characterized in that: described a plurality of juxtaposed each other subcoils are that the subcoil by a plurality of uniform thickness staggers on Width and closely and put.
9. coil assembly as claimed in claim 6 is characterized in that: described a plurality of juxtaposed each other subcoils are by a plurality of not wide subcoils with one heart and put.
10. coil assembly as claimed in claim 6 is characterized in that: the axial inactive edge of described subcoil has at least one bending, and this axial inactive edge is flush shape.
11. a coreless type linear motor is characterized in that comprising:
One track, this track comprise a plurality of permanent magnets of the positive and negative storing of two row, are preset with an action space between a plurality of permanent magnets of the positive and negative storing of these two row;
One coil assembly, this coil assembly comprises the three phase units coil groups of a plurality of staggered overlapping arrangements in the axial direction, and the resin bed of the above-mentioned three phase units coil groups of an encapsulation, wherein resin bed is positioned at the action space of track, and this three phase units coil groups comprises three groups of identical unit coils, and this unit coil comprises each other a plurality of and puts and have the subcoil of at least one bending at axial inactive edge respectively.
12. coreless type linear motor as claimed in claim 11 is characterized in that: described a plurality of juxtaposed each other subcoils are overlapping and put at thickness direction by a plurality of wide subcoils.
13. coreless type linear motor as claimed in claim 11 is characterized in that: the axial inactive edge of described a plurality of subcoils has two bendings, and these two bendings have identical radius of curvature.
14. coreless type linear motor as claimed in claim 11 is characterized in that: in described a plurality of subcoils, the vertical-direction length of upper strata subcoil is shorter than the vertical-direction length of lower floor subcoil.
15. coreless type linear motor as claimed in claim 11 is characterized in that: the coil section zone of the axial inactive edge of upper strata subcoil of described unit coil is on the gross thickness of unit coil.
16. coreless type linear motor as claimed in claim 11 is characterized in that: described a plurality of juxtaposed each other subcoils are that the subcoil by a plurality of uniform thickness staggers on Width and closely and put.
17. coil assembly as claimed in claim 11 is characterized in that: described a plurality of juxtaposed each other subcoils are by a plurality of not wide subcoils with one heart and put.
18. coreless type linear motor as claimed in claim 11 is characterized in that: each subcoil mode of connection of described unit coil is series, parallel or connection in series-parallel mixing wiring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101499463A CN101924409B (en) | 2009-06-16 | 2009-06-16 | Unit coil, coil assembly and ironless linear motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101499463A CN101924409B (en) | 2009-06-16 | 2009-06-16 | Unit coil, coil assembly and ironless linear motor |
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| CN101924409A true CN101924409A (en) | 2010-12-22 |
| CN101924409B CN101924409B (en) | 2012-06-27 |
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| CN2009101499463A Active CN101924409B (en) | 2009-06-16 | 2009-06-16 | Unit coil, coil assembly and ironless linear motor |
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| CN (1) | CN101924409B (en) |
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| CN103560643A (en) * | 2013-10-24 | 2014-02-05 | 清华大学 | Printed circuit board winding linear motor |
| CN103840588A (en) * | 2012-11-26 | 2014-06-04 | 直得科技股份有限公司 | Coreless linear motor coil assembly structure and unit coil thereof |
| TWI458224B (en) * | 2011-12-07 | 2014-10-21 | Delta Electronics Inc | Motor and coil structure thereof |
| TWI484724B (en) * | 2012-07-27 | 2015-05-11 | Chieftek Prec Co Ltd | A coil unit and coil assembly for non-ferrite core linear motor |
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| TWI484724B (en) * | 2012-07-27 | 2015-05-11 | Chieftek Prec Co Ltd | A coil unit and coil assembly for non-ferrite core linear motor |
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| CN105186748B (en) * | 2015-07-31 | 2023-09-19 | 浙江鼎安机械制造有限公司 | Stator winding structure of radial coreless permanent magnet motor and motor |
| WO2019007198A1 (en) * | 2017-07-06 | 2019-01-10 | 上海果栗自动化科技有限公司 | Linear transport system |
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