JPH0614771B2 - Jig for armature shaping of ironless core motor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electronic shaping jig for an iron-free core motor.

BACKGROUND ART Generally, an armature of this type of iron-free core motor is manufactured by the process shown in FIG. That is, first, as shown in FIG. 5 (a), a plurality of insulation-coated rectangular coil wires 1 are closely contacted and arranged in parallel and in a row to form a coil wire bundle 2a. As shown in FIG. 5 (b), the coil wire bundles 2a are arranged in parallel so as to form a peripheral surface of a cylinder having an axis parallel to the coil wire 1, and then the cylinder is twisted in the circumferential direction. As a result, a pair of coil wire bundles adjacent to each other leaving slits at both ends in the longitudinal direction of the coil wire bundle 2
The inner coil 3a having a shape in which 2a are closely contacted with each other is formed, and the outer coil 3b having a shape twisted in the opposite direction is formed in the same manner.The both ends of the coil wire bundles 2a, 2b are connected to each other inside and outside. And are overlapped with each other, and as shown in FIGS. 5 (c) and (d), the inner coil 3a and the outer coil 3b are formed on the end surface of the cylinder.
The armatures 5 which are wave coils are formed by joining the coil element wires 1 with each other by using an appropriate method such as laser welding or solder fixing. Here, FIGS. 5 (c) and (d) respectively show end faces on the opposite side of the armature 5, in which the slit 6a is linearly formed on one end face and a pair of circumferentially adjacent ones on the other end face. The inner and outer surface coils 3a and 3b are arranged so as to be displaced by one coil wire 1 in the circumferential direction so as to facilitate the feed wiring 7 between the coil wire bundles 2a and 2b, and are formed here. The slit 6b is formed in a meandering shape.

By the way, the inner and outer coils 3a, 3b are each formed in a cylindrical shape, the total number of the coil wires 1 constituting the inner and outer coils 3a, 3b is the same, and the coil wire bundles 2a, 2b are the same.
The number of coil wires 1 forming b is the same in both the inner and outer coils 3a and 3b. However, as shown in FIG. 6, assuming that the inner and outer coils 3a and 3b have inner diameters R ₁ and R ₂ , respectively, and the total number of coil wires 1 is N, the inner coil 3a has a wire width t ₁ and an outer coil 3a. The line width t _{2 of} 3b is expressed as t ₁ ≈ 2πR ₁ / N t ₂ ≈ 2πR ₂ / N, respectively, and the width between the coil wire bundle 2a forming the inner coil 3a and the coil wire bundle 2b forming the outer coil 3b. Respectively l ₁ , l ₂
And the number of coil element wires 1 included in each coil wire bundle 2a, 2b is n, the difference Δl in width between the coil wire bundles 2a, 2b in the circumferential direction is Δl = l ₁ ~ l ₂ ≈2πn (R ₁ ~ R ₂ ) / N. That is, since there is a difference of Δl in the width of each coil wire bundle 2, a step is formed at the end of the coil wire bundle 2a of the inner coil 3a and the corresponding coil wire bundle 2b of the outer coil 3b. .

On the other hand, as described above, the coil element wire 1 of the inner coil 3a and the coil element wire 1 of the outer coil 3b are joined and the coil element wires 1 of the inner and outer coils 3a, 3b are electrically and mechanically connected to each other via the joint portion 4. Since they are coupled together, the inner and outer coils 3a and 3b must be accurately aligned. Therefore, a shaping jig is used, and conventionally, the jig having the shape shown in FIG. 8 has been used. That is, the jig is provided with position regulating fins 14 'which are inserted into the slits 6a formed between the pair of coil wire bundles 2a and 2b adjacent to each other at each end of the coil wire bundles 2a and 2b. ′
By aligning the slits 6a of the inner and outer coils 3a and 3b with each other, the coils 3a and 3b are positioned in a predetermined positional relationship. However, the position restricting fins 14 'in the conventional jig have side surfaces formed in a plane substantially parallel to the center line of the position restricting fins 14' and are inserted between a pair of adjacent position restricting fins 14 '. Since the step portions are formed at the ends of the coil wire bundles 2a, 2b of the inner and outer coils 3a, 3b as described above, the position regulation is performed on the end faces of the coil wire bundles 2a, 2b of the inner and outer coils 3a, 3b. The side surface of the fin 14 'cannot be closely attached,
The distance between the position regulating fins 14 'is set according to the wider one of the coil wire bundles 2a and 2b of the coils 3a and 3b. However, the narrower coil magnetic flux 2a, 2b
Is not sufficiently pressed by the position regulating fins 14 ', and a gap is created between the position regulating fins 14', so that the coil wire 1 is displaced as shown in FIG. There is a problem that the positional relationship between the coil strands 1 of 3a and 3b is broken and it becomes difficult to join the coil strands 1 of both coils 3a and 3b.

[Object of the Invention] The present invention has been made in view of the above points, and its main object is to provide an internal coil in a portion where the distance between a pair of adjacent position regulating fans corresponds to the inner coil. Corresponding to overlapping the inner and outer coils by setting the shape of the position control fin so that it matches the width of the coil wire bundle of the coil and the width of the coil wire bundle of the outer coil at the portion corresponding to the outer coil. An object of the present invention is to provide an armature shaping jig for a non-ferrous core motor, which enables accurate positioning of coil wires.

DISCLOSURE OF THE INVENTION (Embodiment) As described above with reference to FIG. 5, the armature includes the pair of inner and outer coils 3a and 3b, and the inner and outer coils 3a and 3b are overlapped with each other, and the inner and outer coils 3a are overlapped. The corresponding coil wires 1 of 3 and 3b are joined together. Since the coil wires 1 of the inner and outer coils 3a and 3b correspond to each other on a one-to-one basis, it is necessary to accurately align the inner and outer coils 3a and 3b,
A shaping jig is used for the alignment.

As shown in FIG. 3, the armature shaping jig comprises a cylindrical core 10 to be inserted into the armature, and a pair of connecting holes formed at both axial ends of the core 10. A pair of upper and lower outer shells 13a, 1 each having a connecting leg 12 fitted to each of
3b and. The core 10 has an outer diameter corresponding to the inner diameter of the armature 5 and is formed as a columnar body having a length substantially equal to the entire length of the armature 5 in the longitudinal direction. Upper and lower outer child 1
Reference numerals 3a and 13b respectively denote the outer body 1 on one bottom surface of a cylindrical outer body 16 having an outer diameter corresponding to the outer diameter of the armature 5.
A cylindrical connecting leg 12 having a smaller diameter than 6 is provided so as to project coaxially, and a plurality of position regulating fins 14a and 14b are provided around the base of the connecting leg 12 at substantially equal intervals. The position regulating fins 14a, 14b are a pair of coil magnetic fluxes 2a, 2b adjacent to each other in the circumferential direction at both ends of the armature 5 in the axial direction.
It is formed at a position corresponding to the slits 6a and 6b formed therebetween. However, by mounting the core 10 inside the armature 5,
The outer legs 13a and 13b are mounted on the core 10 by fitting the connecting legs 12 of the upper and lower outer cores 13a and 13b into the respective connecting holes 11 formed at both ends of the core 10, and at this time, each position regulation By inserting the fins 14a, 14b into the slits 6a, 6b formed at both axial ends of the inner and outer coils 3a, 3b, the inner and outer coils 3a, 3b are regulated in a predetermined positional relationship. In this state, the armature 5 can be shaped into a predetermined shape by compressing it from its outer peripheral surface with a shaping die or the like.

By the way, the position regulating fins 14a in the upper outer child 13a
Has a shape as shown in FIG. 1 when projected onto a plane substantially orthogonal to the axial direction of the armature 5. That is, a step portion 15 is formed on each side surface of each position regulating fin 14a, and the inside of the step portion 15 abuts on one end surface in the width direction of the coil wire bundle 2a of the inner coil 3a. Also, the outer side is in contact with one end surface in the width direction of the coil wire bundle 2a of the outer coil 3b. A pair of position regulating fins 14a adjacent to each other in the circumferential direction
The distance between them is set to be substantially equal to the width l ₁ of the coil wire bundle 2a of the inner coil 3a inside the step portion 15. Outside the stepped portion 15, the width l ₂ of the coil wire bundle 2b of the outer coil 3b is set to be substantially equal. Here, the position regulating fins 14a are formed symmetrically with respect to the center line L thereof. However, as shown in FIG. 2, each coil 3 is placed between a pair of position regulating fins 14a adjacent to each other in the circumferential direction.
When the coil wire bundles 2a, 2b of a, 3b are inserted, each coil wire bundle 2a,
The coil wires 1 forming 2b are held in close contact with each other, whereby the inner and outer coils 3a and 3b can be aligned with each other. By shaping as described above, the coil strands 1 of the inner and outer coils 3a, 3b are positioned at predetermined positions. Therefore, after removing the shaping jig from the armature 5, the coil strands are removed. Even when the end portions of 1 are joined by a predetermined method such as laser welding or solder connection, the joining position is set accurately.

In the portion corresponding to the lower outer shell 13b, both the inner and outer coils 3a, 3b are displaced by one coil wire 1 in the circumferential direction and slit.
6b is formed in a meandering shape. Therefore, as shown in FIG. 4, each side surface of the position regulating fin 14b of the lower outer shell 13b is formed in a meandering shape via the step portions 15a and 15b. The distance between the pair of position regulating fins 14b adjacent to each other in the circumferential direction is equal to the circumferential width of the coil wire bundle 2a of the inner coil 3a in the portion corresponding to the inner coil 3a as in the upper outer shell 13a. Since the corresponding portion is formed to have the same width as the coil wire bundle 2b of the outer coil 3b in the circumferential direction, the coil magnetic fluxes 2a and 2b and the position regulating fins 14 are formed.
The gap between a and 14b becomes smaller. As a result, the coil strands 1 of the inner and outer coils 3a and 3b can be accurately positioned in the same manner as the upper outer shell 13a.

[Advantages of the Invention] As described above, the present invention includes an upper outer member and a lower outer member that are mounted on both ends of the inner and outer coils in the axial direction in a state where the inner and outer coils are overlapped. The lower outer member has a shape in which a connecting leg that is inserted into the end portion of the inner coil is provided in a protruding manner on the outer body that abuts on the axial end face of each coil, and the coil shaft is provided on the peripheral surface of the base of the connecting leg. A plurality of position regulating fins, which are arranged at substantially equal intervals in a plane orthogonal to the direction and are respectively inserted into the slits formed at both ends of each coil in the axial direction, are provided in a protruding manner, and a pair of adjoining circumferentially adjacent fins are provided. The distance between the position control fins is equal to the width of the coil wire bundle forming the inner coil in the portion corresponding to the inner coil and equal to the width of the coil wire bundle forming the outer coil in the portion corresponding to the outer coil. Inner coil and outer coil on both sides of the position control fin A step is formed along the boundary surface of the coil and both side surfaces of the position regulating fin of the upper outer member are symmetrical with respect to the center line of the protruding direction from the connecting leg in the plane orthogonal to the axial direction of the coil. Since both side surfaces of the lower outer member position regulating fin meander in the same direction in the circumferential direction of the coil with a step for one coil wire in a plane orthogonal to the axial direction of the coil, both inner and outer coils are superposed. At this time, both coils can be accurately aligned in a predetermined positional relationship, and as a result, the positional relationship between the coil wires forming each coil is restricted to a fixed position, and the coil wire bundle of the inside and outside combined It is not necessary to detect the joining pitch of the inner coil and the outer coil in accordance with each one, and to join them at a pitch in which the positional relationship between the coil element wires between the position regulating fins is calculated in advance. Is possible And has the advantage of bonding between the corresponding coil wire is facilitated.

[Brief description of drawings]

1 is a plan view of an essential part showing an embodiment of the present invention, FIG. 2 is a plan view showing a state in which a coil wire bundle is fitted between position regulating fins of the same, and FIG. 3 is a state of use of the same. FIG. 4 is an exploded perspective view, FIG. 4 is a perspective view of a main part of the same, FIG. 5 is a process diagram showing a manufacturing process of the armature, FIG. 6 is a schematic horizontal sectional view of the armature,
FIG. 7 is a plan view showing an example of a coil wire bundle used in an armature, FIG. 8 is a perspective view of a conventional part, and FIG. 9 is a plan view of essential parts showing problems in the conventional part. 1 is a coil element wire, 2a and 2b are coil wire bundles, 3a is an inner coil, 3
b is an outer coil, 4 is a joint, 5 is an armature, 10 is a core,
11 is a connecting hole, 12 is a connecting leg, 13a is an upper outer shell, 13b is a lower outer shell, 14a and 14b are position regulating fins, 15 is a step,
Reference numeral 16 is an outer body.

Claims (1)

[Claims] 1. A coil wire bundle is formed by closely arranging a plurality of parallel linear coil wires in a row to form a coil wire bundle, and forming a circumferential surface of a cylinder having an axis parallel to the coil wires. A plurality of coil wire bundles are arranged in parallel in the circumferential direction so as to be spaced apart from each other, and a pair of coil wire bundles that are adjacent to each other in the circumferential direction are formed in such a manner that slits are left at both ends of the coil wire in the longitudinal direction. The inner coil is formed by twisting it closely in the circumferential direction, and the outer coil that overlaps the outer circumference of the inner coil is formed in a shape twisted in the opposite direction to the inner coil in the same manner as the inner coil. In an armature shaping jig for shaping an armature that is a wave-wound coil by joining coil wires to each other at both ends of the coil wires, the inner and outer coils are overlapped in the axial direction. Attached to both ends The upper and lower outer parts are provided with connecting legs that are inserted into the ends of the inner coils on the outer body that contacts the axial end faces of the coils. Has a curved shape, is arranged on the peripheral surface of the base of the connecting leg at substantially equal intervals in a plane orthogonal to the axial direction of the coil, and is inserted into each of the slits formed at both axial ends of each coil. A plurality of position regulating fins are provided so that the distance between the pair of position regulating fins adjacent in the circumferential direction is equal to the width of the coil wire bundle forming the inner coil in the portion corresponding to the inner coil, and corresponds to the outer coil. In the portion, a step portion is formed along both sides of the position regulating fin along the boundary surface between the inner coil and the outer coil so as to be equal to the width of the coil wire bundle forming the outer coil. Both side surfaces of the connecting leg are in the plane orthogonal to the axial direction of the coil. And the two side surfaces of the lower outer member position regulating fin are the same in the circumferential direction of the coil as a step for one coil wire in a plane orthogonal to the axial direction of the coil. An armature shaping jig for ironless core motors, characterized by meandering in the direction.