JPS6039331A - Cup-shaped rotor and manufacture thereof - Google Patents

Abstract

PURPOSE:To obtain a cups-shaped rotor which has a simple structure and can be readily manufactured by forming as a crossover unit the center of opposed long sides of a rectangular original-shaped coil, providing a coil terminal at the crossover unit, and connecting the terminal to a corresponding segment of a commutator. CONSTITUTION:An original-shaped coil 1 has a rectangular shape having opposed short and long sides 2, 3, and has coil terminals 4a, 4b at the center 10 of the long sides. Crossover units 10' having coil terminals 4a, 4b are provided at the centers 10 of the long sides 3, a phase coil 12 formed so that the U-shaped free ends 11 are used as a pair or coil sides 14 is displaced circumferentially, thereby forming a cup-shaped coil unit 13. Then, a commutator 16 having 6 segments and a rotational shaft 18 having a holder 17 are inserted from the lower opening of the coil unit 13, and the terminals 4a, 4b are connected to the near segments.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a cup-shaped rotor and a method for manufacturing the same, and in particular to a method of bending a plurality of phase coils formed by bending a substantially rectangular prototype coil in the circumferential direction. The present invention relates to a cup-shaped rotor in which a cup-shaped coil body is formed by shifting the coil body, and a method for manufacturing the same.

(b) Prior art As disclosed in Japanese Utility Model Application Publication No. 53-75702, this type of conventional device forms a rectangular prototype coil having opposing short sides and opposing long sides by winding a coil wire. , the central part of the opposite long side of this prototype coil is located on one end surface of the imaginary cylinder, and both U-shaped free ends of the prototype coil are formed into a new curve so that they are located on the circumferential surface of the imaginary cylinder, thereby forming three phase coils. form. Both U-shaped free ends of each phase coil serve as first and second fill portions, and the first and second coil portions can be considered to be connected in series. Therefore, if these three phase coils are shifted in the circumferential direction to form a cup-shaped coil body, this becomes a 6-coil, 3-phase coil body.

Two coil ends and child parts are drawn out from each phase coil, and each coil terminal part is connected to a commutator segment. In this case, as disclosed in U.S. Pat. No. 3,686,521, when the stator magnet has four poles, six
Using a commutator with segments, the coil terminals of each phase coil are connected to odd-numbered segments in a △ connection or a Y-connection, and each odd-numbered segment is connected to an even-numbered line separated by 180 mechanical angles. is connected to the segment by a lead member. This connection state is shown in FIG. In this drawing, (A), (A), and (A) are phase coils, and the first coil part (A,) and the second coil part (A2) are shown as phase coils, respectively.
) and has a coil terminal part (B) (B), this coil terminal part is an odd-numbered safety member) of the commutator (C).
・(a), (c), and (e), and each odd-numbered segment) is connected to an even-numbered segment (a > (r > (b)) that is 180 degrees apart, except for the coil wire. 1
Connected by four members (D).

In this way, in the conventional device, a lead member <D) that is different from the fill wire forming the phase coil is used.
It is necessary to connect segments that are opposite each other at 0 degrees, resulting in a complicated structure and poor productivity.

(c) Purpose of the invention The present invention has been invented in view of the above points-r', 1
It is an object of the present invention to provide a cup-shaped rotor that facilitates short-circuit connections between commutator segments separated by 80 degrees, and a method for manufacturing the same.

(d) Structure of the Invention In order to achieve the above object, the cup-shaped rotor according to the present invention has a substantially rectangular prototype coil whose center portion of the opposing long side is positioned at one end surface of an imaginary cylinder to serve as a crossover portion. A phase coil formed by bending both U-shaped free ends of the coil to be positioned on the circumferential surface of an imaginary cylinder, and a cup-shaped coil body formed by shifting these N phase coils in the circumferential direction. , a commutator located on the one end surface and having 2N segments, a coil terminal portion is provided in each pair of crossover wire portions of each phase coil, and each coil terminal portion is connected to each corresponding segment. It is characterized by the fact that Further, one manufacturing method thereof includes winding a coil wire around one of a pair of pins of a holding member to form a first coil terminal portion, and winding the coil wire around at least one of a pair of opposing winding frame members. Wound around the other pin to form a second coil terminal part,
Thereafter, a step of winding the coil wire around the pair of winding frame members to create a prototype coil, and inserting a holding member that holds the N prototype coils so as to intersect each other into the hollow shaping member, so that each of the prototype fills is opposed to each other. A step of shaping each prototype fill into a phase coil so that the central part of the long side becomes a crossover portion located on the end surface of the holding member, and both U-shaped free ends of the prototype coil are located on the circumferential surface of the holding member. , heat the two coils of each phase and connect the phase coils (.

forming a cup-shaped coil body, and connecting first and second coil terminal portions provided in each of the crossover wire portions to segments of a commutator having 2N segments. It is what it is.

(e) Examples An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a perspective view of the prototype coil. This prototype coil (
1) is formed by winding a coil wire made of self-fused conductive wire, and has opposing short sides (2) (2) and opposing long sides (3) (3).
), and has coil terminal portions (4a) (4b) at the center of each opposing long side.

The prototype coil (1) is formed by a poly-winding device in FIG. This winding device includes six winding frame members (5) arranged on the circumference, a holding member (6) located at the center of these winding frame members, a flyer (7), and this flyer (7).
) and a hollow shaping member (8) located on the axis of the shaft.

The six winding frame members (5) are arranged at equal intervals on the circumference, and FIG. 3 shows a pair of opposing winding frame members (5) (5). Further, as shown in FIG. 4, the holding member (6>) is provided with six long and thin round bottles (7a) and six short flat pins (7b) on its upper surface.

When creating the prototype coil (1), first
) and movement of the holding member (6), a first coil terminal portion (8a) is formed in the first round bottle <7a') by winding the coil wire (9). Thereafter, the pair of opposing winding frame members (5) (5) rise from the solid line position in FIG. 3 to the dashed line position, for example, the winding frame member (
5) is rotated by the fryer (7), and after half a rotation of the fryer,
A second coil terminal portion (8b) is formed on the second round pin (7a'') in the same manner as described above.Then, the flyer (7) is rotated in a predetermined direction, and the pair of winding frame members (5) ( 5) Create a first prototype coil (1>) by winding the coil wire (9) between the pair of winding frame members (5) after winding the coil wire.
)(5) falls to the solid line position in FIG.

Subsequently, the pair of winding frame members (5) (5) located next to each other are raised, and a second prototype coil is created in the same manner as described above. In this way, a third prototype coil was also created, and FIG. 5 shows a schematic plan view of the three prototype coils (1) held by the holding member (6). As is clear from this drawing, the three prototype coils (1) have a round pin (7a) and a flat pin (7a), respectively.
b) is maintained.

In this state, the short side (2) of each prototype coil (1)
are respectively hung on the winding frame member (5). By tilting each winding frame member (5) from the solid line position in FIG. 3 to the two-dot chain line position, the short side (2) is released from the latching position. Therefore, the coil wires on the short side 2) are in a free state with respect to each other.

At this point, the holding member (6) in FIG. 3 moves upward. That is, as shown in FIG. 6, the holding member (6) is a hollow shaping member (8).
Each prototype carp (1) is shaped by being inserted into the carp. In this case, the opposite long side (3) of the prototype coil part 1)
Each central part (10) of (3) is attached to a bottle (7) of the holding member (6).
a) located on the end face (6a) provided with (7b), and on the circumferential face (6b> of both U-shaped free ends (11) (11) i-1 holding member (6) of the prototype coil (1) be positioned.

In this way, each prototype coil (1) is converted into a phase coil (12).
By applying heat to each phase coil (12) with the holding member (6) inserted into the hollow shaping member (8), the molten layer on the surface of the coil wire is melted and then hardened. By doing so, the spaces between adjacent fill wires in the phase coils are solidified, and at the same time, the spaces between the heavy phase coils are solidified. Thus 3
A cup-shaped coil body (13) is formed by shifting the phase coils (12) in the circumferential direction, and the coil body (
13) is shown in FIG. 7. Further, a perspective view of one phase coil is shown in FIG. As is clear from these drawings, the center portions of the opposing long sides (3) (3) of the prototype coil (1)
10) is a crossover portion (10') having coil terminal portions (4a) and (4b), respectively. Also, the F-shaped free end (11)
is a pair of coil sides (14) (14) and coil end (15)
) to form.

Next, as shown in FIG. 9, a rotating shaft having a commutator (16) having six segments and a coil holder (17)
18) from the lower opening of the cup-shaped coil body (13), and then
) to adjacent segments. This connection state is shown in FIG. 10 as a developed diagram. As is clear from this drawing, each phase coil (12) has first and second coil parts (1
2a) (12b), both coil parts are connected in series, and both ends of each phase coil are connected to the odd-numbered segment 1-(a).
(c) It is connected to (e), making it a △ connection. In addition, a pair of crossover portions (10'>(io') of each phase filter (12)
The coil terminal parts (4a) and (4b) provided in
For example, the coil terminal portions (4a) and (4b) are connected by a coil wire (9a), as shown by the dashed line in Fig. 10. The first or second coil part (1211) (12
b) will be bypassed. In the same figure (]-9>(19)
The brushes are in sliding contact with the commutator (16), and since the stator magnet (20) has four poles, the distance between the brushes is 90 degrees.

(F) Effects of the Invention As described above, the present invention has the central part of the opposite long side of the rectangular prototype coil positioned on the end face of the aerial cylinder to serve as a crossover portion, and both F-shaped free ends of the prototype coil are connected to the aerial column. When forming a phase coil by bending it so as to be located on the circumferential surface of the cylinder, a coil terminal section is provided at each crossover section, and this pair of coil terminal sections is connected to segments whose number is twice the number of phase fills. Since the device is connected to opposing segments of a commutator having a A simple cup-shaped rotor can be provided.

[Brief explanation of drawings]

Fig. 1 is an exploded view showing the wiring state of a conventional device, Figs. 2 to 10 show an embodiment of the present invention, Fig. 2 is a perspective view of the prototype coil, and Fig. 3 is a front view of the winding device. Figure 4 is a perspective view of the holding member, Figure 5 shows the state in which three prototype coils are held by the holding member) 1 A schematic plan view, and Figure 6 is the relationship between the holding member and the hollow shaping member. FIG. 7 is a perspective view of the cup-shaped coil body, FIG. 8 is a perspective view of the phase coil, and FIG.
The figure is a sectional view of the cup-shaped rotor, and FIG. 10 is a developed view showing the state of wire connection. (1)... Prototype coil, (6)... Aerial cylinder (holding member), <10')... Crossover wire section, (11) (11)
... U-shaped free end, (12) ... Phase coil, (13
)...Cup-shaped coil body, (16)...Commutator, (
4a) (4b)...Coil terminal part, (6)...Holding member, (7a'>(7a'')...Pin, (5)(
5)... Winding frame member, (8)... Hollow shaping member.

Claims (2)

[Claims] (1) The central part of the opposing long side of the approximately rectangular prototype coil is positioned on one end surface of the imaginary cylinder to serve as a crossover section, and both U-shaped free ends of the prototype coil are positioned on the circumferential surface of the imaginary cylinder. A phase coil that can be bent and formed, a cup-shaped coil body formed by shifting the N phase coils in the circumferential direction, and a commutator located on the one end surface and having 2N segments, A cup-shaped rotor characterized in that a pair of crossover wire portions of each phase coil is provided with a coil terminal portion, respectively, and each coil terminal portion is connected to each corresponding segment. (2) A coil wire is wound around one of the pair of bins of the holding member to form a coil terminal portion of '7A1, and the coil wire that has bypassed at least one of the pair of opposing winding frame members is wrapped around the other bin. winding to form a second coil terminal portion;
Thereafter, a step of winding the coil wire around the pair of winding frame members to create a prototype coil, and inserting a holding member that holds the N prototype coils so as to intersect them into the hollow shaping member, so that each prototype coil is opposed to each other. A process of shaping each prototype coil into a phase coil so that the central part of the long side becomes a crossover portion located on the end surface of the holding member, and both U-shaped free ends of the prototype coil are located on the circumferential surface of the holding member. , a step of heating each phase coil to couple the phase coils to form a cup-shaped coil body, and forming first and second coil terminal portions provided in each crossover portion into 2N segments. A method for manufacturing a cup-shaped rotor comprising the steps of connecting to segments of a commutator.