JPS63103642A - Manufacture of coreless armature - Google Patents

Abstract

PURPOSE:To increase the reliability of jointing and eliminate laser welding, by a method wherein an auxiliary member is embedded into the end face of a coil and the coil and the auxiliary member are caulked while a projection, produced in the base of caulking, is utilized to increase the jointing strength between the end face of the coil and an insulating member. CONSTITUTION:A groove 6 is worked on the end face of a coil strand #1 by a V-punch P1. Next, an auxiliary member 7, consisting of a conductor, is inserted into the groove 6. Then, a punch P2, having a width which is 2-4 times of the width W of the groove 6, is employed to press the end face of the coil elemental wire #1 from the upper part of the end face. In this case, the edge 8 of the groove 6 is deformed by the punch P2 and is caulked so that a projection 9, formed on the deformed groove 6', wraps the auxiliary member 7. Subsequently, insulating material 10 is loaded into the groove 6' and is cured.

Description

[Detailed description of the invention] (Technical field) The present invention applies to a method of manufacturing a iron-free core armature.

(Background technology) The ironless core 'I11 armature (hereinafter ψ is referred to as armature) of a movable ring type coreless motor with a cylindrical shape has a structure in which a coil is hardened with epoxy resin, as shown in Fig. 3 ( stomach),([
1) and Figure 4 (a) and (b)? An example of a single armature is shown. Figures 3 (a) and 4 (a) are schematic perspective views of the armature, and Figures 3 (b) and 4 (b) are respective views of the armature. It is a development view showing a part of the end face of the coil east line of (a). In Figure 3 (a) and (b),
The ff111 element 1 consists of an inner layer coil 2 and an outer layer coil 3, and the coil wires are connected to each other at the coil terminals A and B of the cabinet coil 2 and the outer layer coil 3 according to the configuration of the armature, respectively.

For example, in the coil terminal A, the coil wires #1 and #1゛, #2 and #2°, etc. between the inner coil 2 and the outer coil 3
are connected to each other, and at coil terminal B, coil wires #1 and #2°, #2 and #3° of inner layer coil 2 and outer layer coil 3 are connected to each other.
... are connected to each other to form an armature.

Similarly, in FIGS. 4(a) and 4(b), the armature 1' is composed of an inner layer coil 2'' and an outer layer coil 3'', and at the coil terminal A°, an inner layer coil 2'' and an outer layer coil 3'' are constructed. The coil wires #1 and #1'', #2 and #2', etc. are connected to each other, and at the coil terminal B°, the coil wire #6 and the inner layer coil 2° and the outer layer coil 3' are connected to each other. #7゛, #5 and #6'...
...are interconnected to form 1! Isogo is composed.

The conventional T1n element has the following problem in the terminal connection of the coil wire.

In the connection between coil wire #1 and #1° in each of Fig. 3 (b) and Fig. 4 (b), coil wire #1 and #1
Methods such as placing an auxiliary material 4 on both end faces of the 1° angle and welding with a laser, or forming grooves connected to both end faces, embedding a vortex with the auxiliary material 4, and welding with a laser are used. Ta. However, in order to avoid affecting the insulating film during welding, it is necessary to control the laser irradiation position with high precision, which has the disadvantage of reducing workability. Furthermore, it was difficult to ensure reliability.

(Object of the Invention) The present invention has been proposed in view of the above-mentioned drawbacks, in which an auxiliary material is embedded in the end face of the coil, and the coil and the auxiliary material are caulked. The protrusions formed at this time are used to increase the bonding strength between the coil end face and the insulating material by 11%, increasing the reliability of the bond and eliminating the need for laser welding.

(Disclosure of the Invention) In order to achieve the above object, the present invention provides a non-ferrous core which arranges an inner layer coil and an outer layer coil, and connects the end faces of the respective coil wires of the inner layer coil and the outer coil. 1! In the machine manufacturing method, a hole is provided on the end face of each coil wire of an inner layer coil and an outer layer coil, and an auxiliary material is embedded in a groove between the end surfaces of the coil wires to be connected, and the width of the groove is adjusted. Using a wider punch, a protrusion is formed in the groove (the auxiliary material is press-fitted, and the end face of the invading coil wire with the auxiliary material caulked by the protrusion is coated with an insulating material). This article summarizes the manufacturing method of S-iron core armature.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is an enlarged view of the end face of the coil wire in FIG. The present invention relates to a method for manufacturing a iron-free armature that joins...

In addition, 4 in FIG. 2 is a conductor, and 5 is an insulating coating.

The manufacturing method will be explained using FIG.

(A) to (G) in FIG. 1 are views for explaining the manufacturing method of the present invention, and (A), (B), (D) to G) in FIG. 1 are sectional views taken along line A-A in FIG. FIG. The manufacturing method will be explained according to the order of the figures. Figure (a) is a cross section of coil wire #1 (coil wire #1 is located behind coil wire #1, not shown) before processing.

Further, the insulating coating is omitted from illustration. V-punch P1 is connected to both end faces of coil wire #1 and #1° in figure (A).
Process full 6 with. Next, as shown in FIG. Figure (C) shows the state in which the auxiliary material is inserted into the 'll16. Next, using a punch P2 having a width of 2 to 4 W relative to the width W of the groove 6, the coil wires #1 and #1' are crimped from above on both sides.

This processing is a step in which the auxiliary material 7 is press-fitted and the 16 edges 8 are caulked at the same time. In other words, the edge 8 is deformed by the punch P2, and the deformed groove 6
A protrusion 9 is formed on `` and is caulked so as to wrap around the auxiliary material 7. Through this processing, the coil wires #1 and #1' are electrically connected to each other. Next, in FIG. Insulating material 10 on the end faces of #1 and #1'
Apply and cure. The insulating material 10 is inserted into the inside of the protrusion 9. As a result, coil wire #1 and #1°
The bonding strength between each of these and the insulating material 10 increases.

As described above, a groove is provided in connection with both of the coil wires to be joined, and the auxiliary material is press-fitted into this groove, and the edge of the groove is deformed to caulk the auxiliary material. After applying an insulating material and joining the coil wires, the production of the iron-free core Miko is completed.

(Effect of the invention) After press-fitting the auxiliary material into the end face of the coil wire, the coil and the auxiliary material are further caulked. The protrusions formed at this time increase the bonding strength between the insulating material coating the surface and the end face of the coil, making laser bonding unnecessary.

[Brief explanation of the drawing]

Fig. 1 (a) to g) are diagrams explaining one embodiment of the present invention, Fig. 2 is a diagram showing the end face of the coil east line, Fig. 3 (a), ([1), and Fig. 4] (A) and (B) are diagrams each showing an example of a conventional ironless core Wi machine. #1. #1°...Coil east line, 6...Groove, 7.
... Auxiliary material, 8 ... Groove edge, 9 ... Protrusion, 10 ... Insulating material

Claims (1)

[Claims] In a method for manufacturing a ironless core armature, in which an inner layer coil and an outer layer coil are arranged, and end faces of respective coil wires of the inner layer coil and the outer layer coil are joined, each of the inner layer coil and the outer layer coil A groove is provided in the end face of the strand of wire, an auxiliary material is embedded between the grooves between the end faces of the coil strands to be connected, and a protrusion is formed in the groove using a punch wider than the width of the groove. A method for manufacturing a ironless core armature, which comprises press-fitting an auxiliary material and caulking the auxiliary material using the protrusion, and then coating the end face of the coil wire with an insulating material.