JPS58133155A - Rotor - Google Patents

Abstract

PURPOSE:To enlarge an opening angle and thereby to make a rotor small-sized by a constitution wherein the slant pieces of jumper wires are connected longitudinally in the circumferential direction on the end surface of a unit coil in such a manner that the pieces are arranged in the direction of inclination in a prescribed way in the state that they overlap on each other. CONSTITUTION:Each jumper wire 15 is constituted by joining the upper end of a vertical piece 15b to one side of the upper end of a slant piece 15a, and by joining connection pieces 15c and 15d to the lower ends of the slant piece 15a and vertical piece 15b respectively. The slant piece 15a are arranged longitudinally in the direction of the circumference of the end surface of a unit coil 11, in the state that the inclination of the slant pieces 15a is arranged in the prescribed direction, and in such a manner that the pieces 15a overlap on each other, and the respective connection pieces 15c and 15d of the wires 15 are fixed by welding to the corresponding strands 9a' and 10a' of the inner and outer cylinders 9 and 10 of the coil. By this constitution, the contact of the jumper wires 15 with each other can be prevented even when the length of the arc of each jumper wire 15 is set to be large, and therefore, an opening angle can be enlarged.

Description

[Detailed description of the invention] This invention relates to a rotor.

A method of manufacturing a conventional ironless core armature used in a rotor will be described with reference to FIGS. 91 to 5. That is, as shown in FIG. 1, a wire sheet 1 in which a large number of wires are arranged in a mutually insulating state is wound spirally around the entire core 2 in the direction of arrow A at a standard winding angle of -0. Then, as shown in FIG. 2, another wire sheet 4 is spirally wrapped around the outer peripheral surface of the queen coil inner cylinder 3 in the opposite direction (in the direction of arrow B) at the standard winding angle θ2. The coil is wound to form a coil outer cylinder 5, and the unit coil 6 shown in FIG. 3 is formed by dividing both the inner and outer coil cylinders 3.5 along a standard length in the axial direction. In this unit coil 6, as shown in the strand development pattern diagram in FIG. Each strand 5a of the outer cylinder 5 is also omitted] It rotates 80 degrees and reaches the one end surface 6a from the other end surface 6b, and the other end surface 6
A pattern is formed such that the chapters @ 3 m and 5 m, which are arranged facing each other in b1m, are arranged one by one on one end surface 6a side. Then, at the cylindrical end of this unit coil 6, a jumper 1s7 is placed between each of the opposed wires 3a and 5a of the inner and outer cylinders 3.5 of both coils as shown in FIG. 5, and welded with a laser beam 8. A coreless armature having one closed loop electric circuit is formed between these jumper wires 7 and all the wires 3a and 5a of the inner and outer coil cylinders 3 and 5.

However, the iron-free core armature formed in this way is
Pixel line sea) 1.4 standard winding angle θ0. 114. As shown in FIG. 114, each strand 3. There was a problem in that the inclination angle of i o 5 m became smaller, that is, the number of interlinked magnetic fluxes of the unit coil 6 as a whole decreased, resulting in a decrease in performance.

In order to prevent this, the reference winding angle θ0. #2 could be made larger, but in that case both the inner and outer cylinders 3.5 of the coils would have to be separated by a length larger than the standard length, which would increase the size of the iron-less core armature, which would result in the iron-less core armature becoming larger. A new problem arises in that the rotor formed by being attached to the commutator plate 1 becomes larger.

Therefore, as shown in FIGS. 6 to 9, a small rotor with excellent performance was proposed. That is, this rotor has a reference winding angle θ0.0 shown in FIGS. 1 and 2.
Wrap the strands > 1.4 at a winding angle larger than 2 to form an inner and outer coil cylinder 9.10 (Fig. 116), and divide this at the standard length to form the unit coil 111 shown in Fig. JR6. Form. FIG. 7 shows the strand layer N/< turn diagram of this Uni7) coil 11, and its winding angle is 03. θ
4 is large, each strand 9 of the coil inner and outer cylinders 9, 10
a, 10m rises in the axial direction of the unit coil 11, and reaches the other end surface 11b from one end surface 11m before rotating 180 degrees, that is, both coils are connected to the inner and outer cylinders 9. lO
The corresponding strands 9a' and 10a' for forming a closed loop have an opening angle θ in the plane of the unit coil 11. Place them opposite each other at a distance of

Then, on the end face of this unit coil 11, the eighth
As shown in FIG. 9 and FIG. 9, a jumper 41 is placed between the corresponding elements @ 9a' and 10a', which are arranged offset in the circumferential direction.
12 is passed over the hook, and its both ends are welded using a laser beam 13. In this case, the jumper wire 12 is connected to the jumper wire 12 and the jumper wire 12 is connected.

] Each chapter 119a and 10a located between OR3 are synonymous with each other.
The insulating film 14 is placed on both the inner and outer cylinders 9. Along the boundary sK of lO, each strand 9 a, l
Form a ring-shaped coating on the inner part of 0JI. Further, the opening angle of 0° is set so that the jumper wires 12 do not ride up or come into contact with each other. In this way, by welding the jumper wires 12 between the respective corresponding wires 9aZlOa' of the inner and outer cylinders 9.10 of both coils, these jumper wires 12 and all the wires of the unit coil 11 are 9 m + 10a.
A coreless armature with a single closed loop circuit is formed between the two and a commutator plate (not shown) is attached to this to form a rotor.

In this way, wire sheets 1, 4 (Fig. 1111, 11
Since the winding angle in Figure 2) was set larger than the reference winding angle -0.02, the inclination angle of each strand 9i and lOa with respect to the axial direction of unit coil 1 was set to be larger than the standard winding angle -0.02, as shown in Figure 7. 4 is larger than that shown in FIG. 4, that is, the unit coil 1. Since the number of interlinked magnetic fluxes as a whole increases, the performance as a rotor can be improved.

Moreover, since the jumper wire 12 is passed diagonally and connected to the corresponding element i9a'+10m', the second linear) coil 1
The shaft length of No. 1 may be the same standard length as the conventional one, and the rotor does not become larger.

However, in this rotor, since the jumper wire 12 is attached along the end face of the unit coil 11, the opening angle θ is
. cannot be set large (if the opening angle θ is set large, the adjacent jumper wires 12 will come into contact and damage each other), in other words, there is an upper limit to the winding angle u3,04, which limits performance improvement. There was a new problem:

Therefore, an object of the present invention is to provide a rotor that can have a large opening angle and achieve further performance improvement and miniaturization.

A first embodiment of this invention will be described using FIGS. 10 to 12. This rotor is connected to the jumper k shown in FIG.
Instead of s12Vc, use jumper wire 15 shown in figure J1!30. This jumper M15 is constructed by connecting the upper end of a vertical piece 15b to the upper end side of the diagonal piece 15a, and connecting pieces 15c and 15d to the lower ends of the diagonal piece 15a and the vertical piece 15b, respectively. As shown in FIG. 12, the unit coils are arranged such that the diagonal pieces 15a are superimposed on each other with the inclination directions of the diagonal pieces 15a being aligned.
Each connecting piece 15 is arranged vertically in the central direction of one end face.
c and 15d are welded and fixed to the corresponding strands 9m' and 10m' of both coil inner and outer cylinders 9.1'0 using a laser beam 16. In this case, each diagonal piece 15m is curved in the width direction with a curvature equal to that of the end surface of the unit coil 11. Also,
As shown in FIG. 12, the jumper wires 15 are spaced apart from each other to maintain mutual insulation.

In this way, with the inclination directions of the diagonal pieces 15m of each jumper 1115 being aligned, the jumper wires 15 are arranged in tandem in the circumferential direction of the end face of the unit coil 11 so that the diagonal pieces 15m overlap each other, and are rounded. Arc length of jumper wire 15
(Fig. 1O), it is possible to prevent the jumper wires 15 from contacting each other and maintain their insulation. In other words, the opening is negative θ. (Fig. 7) can be made large, so a small and high-performance rotor can be obtained. Mae, 13th
As shown in the figure, legs 17b are attached to both ends of the arcuate horizontal piece 17m.
Using the jumper wire 17 with the connecting piece 17c and t-, connect the corresponding elements @ 9m' and 10m' of the inner and outer cylinders 9.10 of both coils as shown in Fig. 14. Since the height H of till 17b has to be changed every time .17..., productivity is poor and each jumper! II4] Although there is a drawback that the electrical resistance value is different for each unit coil 1, in this embodiment, the unit coil 1 can be connected only by the jumper wire 15 of the 1s class shown in Fig. 1IE10.
Since all the corresponding strands 9a', ]Oa' of 1 can be connected,
Productivity is also excellent, and the electrical resistance value of each jumper wire 15 can be kept constant.

A second embodiment of the invention will be explained using FIGS. 15 to 19. In this rotor, in place of the jumper wire 15 shown in FIG. 1.theta., jumpers 1118 and 19 of the 2-hole type shown in FIGS. 15 and 16 are used.

That is, the jumper wires 18 and 19 are connected to the diagonal pieces 18a and 1.
Horizontal pieces 18b, 19b in the direction perpendicular to the diagonal pieces at the upper end of 9m.
are provided protrudingly, and the upper ends of the vertical pieces 18c and 19c are connected to the tips of the horizontal pieces 18b and 19b, and the diagonal pieces 18a are
*19m and connecting pieces 18d and 18e at the lower ends of vertical pieces 18c and 19c, respectively.

19d, 19e f connect. These jumper wires 1
8.19, as shown in FIGS. 17 to 19, the unit coils are arranged in tandem alternately along the circumferential direction of the end face with the diagonal pieces 18a and 19a having the inclination directions opposite to each other. In that case, the slanted piece 1 of the jacket 18
8m and the diagonal piece 19m of the jumper wire 19 overlap each other with a predetermined insulating interval, so that the connecting pieces 18d of both the jumper wires 18 and 19 are connected.

18e * 19d -19e both coils inner and outer cylinder 9.
The corresponding strands of IO are welded and fixed to 9 m' and 10 m' of wire using a laser beam, respectively. In this case, unit coil 11
Set the number of turns to an even number. Further, the welding procedure for the jumper wires 18 and 19 is to sequentially weld one jumper wire 18 one by one, and then weld the other jumper wire 19 one by one.

In this way, the two types of jumper wires 18 and 19, in which the inclined directions of the diagonal pieces 18m and 19m are IKed in opposite directions, are arranged alternately in tandem in the circumferential direction on the end face of the unit coil Ar11, so that the rotor shown in FIG. The arc length Y of each jumper wire 18, 19 is even greater than in the case of (Fig. 15).

(Fig. 16) can be made longer, and the height of each jumper wire 18, 19 can also be set small, making it possible to obtain a small rotor with poor performance. Also, both jumpers 91
8. Overlapping parts of 19 (especially diagonal pieces 18a, 19
By applying an insulating material to the wires 18b and 19b), both jumper wires 18.19 can be arranged completely overlapping each other, that is, the space occupied by the jumper wires 18.19 can be reduced, and each jumper wire 18
．． By gluing 19 into a ring shape, setting can be easily performed.

In addition, as a method of overlapping and gluing jumper wires, the 20th
The jumper wire 20 shown in FIG.
By adhering the overlapping portions of 20c to each other to form a ring shape, setting can be easily performed.

A third embodiment of the present invention will be explained with reference to FIGS. 22 to 28. That is, as shown in Fig. #I22, in this rotor, the central piece 21a of each jumper wire 21 made of a U-shaped wire rod is tilted toward the outer peripheral end surface of the commutator plate 22 with respect to the thickness direction of the commutator plate. In addition to installing the second
As shown in FIG. 3, the unit coil 11' is formed by arranging the end face of the coil inner cylinder 9 inwardly than the end face of the coil outer cylinder 10', and attaching the cylindrical end of the coil inner cylinder 9 to the commutator 1122. By fitting the upper and lower horizontal pieces 21b and 21c of each jump/< wire 21 into both coil inner and outer cylinders 9', respectively.

It is welded and fixed to the corresponding wire 9m'+IGm' (Fig. 24 of Rattan) of 10' by laser beam. 23 is a commutator, and 24 is a connecting line.

For example, as shown in FIG. 25, the jumper wire 21 is attached to the commutator plate 22 by pasting copper foil on a nylon sheet 25, etching this steel foil to form the jumper wire 21, and then is pasted on the outer circumferential end face of the commutator plate 22 shown in FIG. 926 as shown in FIG. 27, and fixed by welding to some of the joint wires 21' and connecting wires 24t using a laser beam. Then, the lower end 21c'l of each jumper wire 21 is bent outward of the commutator plate 22 to form a lower horizontal piece 21c, and as shown in FIG.
The lower horizontal piece 21Ct is welded and fixed to each strand of the coil inner cylinder 9' by means of a laser beam 26. Thereafter, the upper ends 21b' of each jumper wire 21 are bent outward to form upper horizontal pieces 21b, and these upper horizontal pieces 21b are welded and fixed to the bare wires exposed on the end surface of the coil outer cylinder 10'.

In this way, this rotor also has the central piece 21a of each janitor (wire 21) inclined with respect to the end face of the unit coil 11', so it can be made smaller and has excellent performance. 21 is fixed to the commutator plate 22, all the other jacket wires 21 can be positioned by simply positioning one wire 21, and the connection between the commutator plate 22 and the unit coil 1' Since no connections are required, the rotor can be manufactured easily.

As shown in FIG. 29, the jumper wire insertion holes 27 are formed diagonally from the upper surface periphery of the commutator plate 22 to the outer peripheral end surface.
, and insert the jumper wire 28 into the insertion hole 27 as shown in FIG.
1mtJllE31Fold outward as shown in the figure,
Both ends 28a, 28b f both coil inner and outer cylinders 9',
10' may be welded to the corresponding strands using a laser beam. In this case, as shown in FIG.
4- and the jumper wire 28 that penetrates the connecting wire 24 are melted by the laser beam 29.

Fix it to the wall.

As described above, the rotor of the present invention has a coil inner cylinder formed by winding a large number of wires arranged in parallel in a mutually insulating state in a spiral shape at a large winding angle, and a large number of other wires arranged in a large winding angle. A coil outer cylinder formed by spirally wound in opposite directions at the winding angle is formed into an outer moat, and a corresponding element S*t for forming a closed loop between the inner and outer cylinders of these coils is arranged so as to be offset in the circumferential direction at the end face of the coil; A plurality of jumper wires are provided, each of which is inclined with respect to the end surface of the unit coil and crosses above the boundary between the inner and outer cylinders of the coil and whose respective ends are connected to the corresponding wires for forming closed loops, resulting in a small size and high performance. This has the effect of providing a rotor of .

[Brief explanation of drawings]

Figures 1 and 2 are explanatory diagrams of a conventional manufacturing method for ironless core armatures, Figure #I3 is a perspective view of a unit coil, Figure #14 is a diagram of its strand development pattern, and Figure 5 is a jumper wire welding section. The sixth factor is a perspective view of the luunisoto coil used in the proposed example, FIG. 7 is a diagram of its strand development pattern, FIG. 8 is a plan view showing the jumper wire connection state, and FIG. 10 is a perspective view of a jumper wire used in the JIII embodiment of the present invention, FIG. 11 is a perspective view showing how it is attached to a unit coil, FIG. 3332 is a front view thereof, and FIG.
Figures 1 and 14 are diagrams for explaining the advantages of the first embodiment, #1Ils is a perspective view of one jumper wire used in the second embodiment, and Figure 16 is a perspective view of the other jumper. , Fig. 17 to Fig. 19 are explanatory diagrams of the installation state of each jumper machine, Fig. 20 is a perspective view of a jumper wire as an example of its application, Fig. 421 is a @ side view showing the installation state II, and Fig. 22 is an illustration of the installation state of each jumper machine. Figure 23 is a perspective view of the cost section of the 30th dormitory example.
FIG. 924 is a plan view of the main part thereof, FIG. 1.4... Wire sheet, 9,9'... Coil inner cylinder, 11.11'... Unit coil, 15.18.1
9.20゜21, 28-...Jumper wire, 15m,
18m * 19a - diagonal piece, 15b * 18co
19c...vertical piece, 18b, 19b...horizontal piece, 21''...center piece, 21b...upper horizontal piece, 21c...
...Lower horizontal piece, 22... Commutator plate 17 17a Fig. 13 Fig. 19 Fig. 20 Fig. 21 Fig. 25 Fig. 26 Fig. 1 Fig. 27 Fig. 30 Fig. 31

Claims (1)

[Scope of Claims] (]) A large number of wires arranged in parallel in a mutually insulated state are spirally wound at a large winding angle, and a large number of wires are arranged in a cylinder inside the coil! Ift A coil outer cylinder wound spirally in the opposite direction with a large winding angle is fitted onto the outside, and the corresponding strands for forming a closed loop of both the coil inner and outer cylinders are shifted in the circumferential direction on the end face of the coil 1L7't unit. a coil, and jumper wires having a number of numbers, each extending across the upper part of the inner and outer cylindrical boundaries of the coil in a state of inclination with respect to the end surface of the unit coil, and connecting both ends of each to the corresponding wire for forming a closed loop. rotor. (2) The jumper wire is formed by connecting the upper end of a vertical piece to the upper end of a diagonal piece, and is arranged in tandem in the circumferential direction on the end face of the unit coil with each diagonal piece narrowing in a constant direction. The rotor described in scope item (1). (3) The jumper wire marked @ has a horizontal piece protruding from the upper end of the diagonal piece in a direction perpendicular to the diagonal piece, and the upper end of the vertical piece is connected to the tip of the horizontal piece, and the inclination direction of each diagonal piece is alternately reversed. The rotor according to claim 551(1), wherein the rotor is arranged in tandem in the circumferential direction on the end face of the unit coil. (4) In the unit coil, the end face of the coil inner cylinder is located inward than the end face of the coil outer cylinder, and the jumper wire is a U-shaped wire rod, and the center piece is connected to the outer peripheral end face of the commutator plate. The scope of the patent claims is that the jumper wires are fixed in parallel in an inclined state with respect to the thickness direction, and the commutator plates are fitted to both ends of the inner cylinder of the coil, and the upper and lower horizontal pieces of the jumper wire are respectively connected to the corresponding strands of the inner and outer cylinders of the coil. The rotor described in paragraph (]).