JP3894258B2 - Stator winding structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stator winding structure, and in particular, an elastic tongue provided on a side portion of a bobbin around which a coil is wound is disposed between adjacent coils to prevent electrical continuity between each coil and the stator. The present invention relates to a new improvement for positioning.
[0002]
[Prior art]
Conventionally, as this type of stator winding structure, the configuration shown in FIGS. 6 to 8 is generally employed.
6 to 8 is a ring-shaped stator, and a plurality of coils 3 wound around an insulating bobbin 2 are radially arranged inside the stator.
[0003]
[Problems to be solved by the invention]
Since the conventional stator winding structure is configured as described above, the following problems exist.
That is, the coil wound around each bobbin contacts the stator exposed between the bobbins and becomes electrically conductive, and the action of each coil changes, which may hinder the rotation of the motor or the like. . Therefore, in order to achieve insulation between each coil and the stator, an insulating paper or an insulating sheet may be inserted between each bobbin or integrally molded and encapsulated with resin. It was difficult to fix the coil, and the coil sometimes moved during molding with resin.
[0004]
The present invention has been made to solve the above-described problems, and in particular, an elastic tongue provided on a side portion of a bobbin around which a coil is wound is disposed between adjacent coils, and each coil, stator, It is an object of the present invention to provide a stator winding structure that can prevent electrical continuity and can position a coil.
[0005]
[Means for Solving the Problems]
Stator winding structure according to the present invention, the stator winding structure for winding a coil (3) through an insulating bobbin (2) in the stator (1), the flanges formed in said opposite longitudinal ends of the insulating bobbin A pair of elastic tongue pieces are provided adjacent to each other along the longitudinal direction of the insulating bobbin so as to be able to bend to each other via hinges and have a tapered tip when viewed from the plane. The elastic tongues of the insulating bobbin are joined together to prevent electrical conduction between the coils and the stator.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a stator winding structure according to the present invention will be described with reference to the drawings. Note that the same reference numerals are used for the same or equivalent parts as in the conventional example.
1 to 3 is a ring-shaped stator, and a plurality of coils 3 wound around an insulating bobbin 2 are radially arranged inside the stator 1.
[0007]
The side portions of the flanges 2a and 2b formed at both ends in the longitudinal direction of the insulating bobbin 2 extend inward along the longitudinal direction of the insulating bobbin 2 as particularly shown in FIGS. A thin plate-like elastic tongue piece 10, 11 is provided, and each elastic tongue piece 10, 11 is mutually connected as shown in FIG. 3 by each elastic tongue piece 10, 11 of the adjacent insulating bobbin 2. It is joined. Each of the elastic tongue pieces 10 and 11 has a tapered tip as viewed from the plane (shown in FIGS. 4 and 5).
[0008]
Since the elastic tongues 10 and 11 are positioned between the coils 3 and 3, the coils 3 and 3 are surrounded by the elastic tongues 10 and 11 even if a gap exists between the bobbins 2. Therefore, the electrical continuity between the coil 3 and the stator 1 is prevented, and both ends of the coil 3 are covered by the elastic tongue pieces 10 and 11, thereby preventing the position and posture of the coil 3 from being disturbed. Each of the elastic tongue pieces 10 and 11 bends inward during winding, but the posture is returned as shown in FIG.
[0009]
Next, FIGS. 4 and 5 show another embodiment, in which the elastic tongue pieces 10 and 11 are formed so as to be bent inward via a hinge portion 20, and each insulating bobbin 2 is fixed to a stator. 1, the elastic tongue pieces 10 and 11 are bent inward to be joined to each other as shown in FIG. 5 to obtain the same effect as that of FIG. 3.
[0010]
【The invention's effect】
Since the stator winding structure according to the present invention is configured as described above, the following effects can be obtained.
In other words, since the elastic tongue provided on the side of the insulating bobbin is disposed between the coils, the coil does not enter the gap between the bobbins, and the electrical continuity between the stator and the coil is ensured. It is possible to prevent the collapse of the shape of each coil.
[Brief description of the drawings]
FIG. 1 is a plan view of a main part showing a stator winding structure according to the present invention.
FIG. 2 is a side view of the main part of FIG.
FIG. 3 is an enlarged plan view of a main part of FIG. 1;
4 is a plan view of a main part showing another embodiment of FIG. 1. FIG.
5 is a plan view showing a joined state of each elastic tongue piece of FIG. 4; FIG.
FIG. 6 is a plan view of a main part of a conventional configuration.
7 is a side view of the main part of FIG. 6. FIG.
FIG. 8 is an enlarged plan view of the main part of FIG. 6;
[Explanation of symbols]
1 Stator 2 Insulating Bobbin 3 Coil 10, 11 Elastic tongue

Claims (1)

In the stator winding structure in which the coil (3) is wound around the stator (1) via the insulating bobbin (2) , the flanges (2a, 2b) formed at both ends in the longitudinal direction of the insulating bobbin (2 ) A pair of elastic tongue pieces, which extend inward along the longitudinal direction of the insulating bobbin (2) via the hinge part (20) and have a tip tapered when viewed from the plane. (10, 11) are provided, and the elastic tongues (10, 11) of the adjacent insulating bobbins (2) are joined to each other to electrically connect the coils (3) and the stator (1). A stator winding structure characterized by being configured to prevent conduction.

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