JP2002101595A - Coil lead positioning method for slotless motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil lead positioning method for a slotless motor that improves productivity in connecting a substrate with a coil lead and flexibility in a stator. SOLUTION: In the coil lead positioning method for the slotless motor fitted with an air-core coil 3 wound concentratedly on the inner circumferential face of a stator core 8, a pin 1 with a return 2 is connected to a coil lead 4 of the air-core coil 3, thereafter the pin 1 is inserted into a terminal block 6 to be connected to a substrate 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for positioning a coil lead in a stator of a slotless motor.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional stator of a slotless motor has a jig which is formed by concentrating and forming an R-shaped air-core coil 3 along the inner peripheral surface of a stator core 8. After equally arranging the terminals, a terminal block 6 for holding a printed board 5 for connection between the air-core coils 3 is provided.
After connecting the coil 3 directly to the substrate 5 and bonding the coil 3 to the insulating sheet 9 that can be impregnated with a resin such as glass fiber to ensure insulation from the stator core 8, the air core coil 3 is bonded. Molding was performed with the resin 7 for curing and for sealing the air core coil 3. Also,
As shown in FIGS. 5A and 5B, the substrate pattern 10 was formed on the front and back surfaces of the substrate 5. In FIG. 4, S is a stator, and R is a rotor.

[0003]

However, in the prior art, when the thickness of the air-core coil 3 is small, the coil lead 4 is inserted into the terminal block 6 and the coil lead 4 is directly connected to the substrate 5. In the connecting step, the coil lead wire 4 is difficult to stand on its own and the position of the coil lead wire 4 is difficult to determine, so that automation is difficult and productivity is poor. When a rectangular wire is used as the coil wire, the longitudinal direction of the coil cross section is radially arranged in the stator and connected to the substrate,
As compared with the round wire coil material, the inner diameter of the substrate is reduced, so that the shape of the stator S in the radial direction is restricted, and the degree of freedom in the stator S is reduced. The present invention has been made in order to solve such a problem, and an improvement in productivity when connecting a substrate and a coil lead wire,
It is another object of the present invention to provide a method for positioning a coil lead wire of a slotless motor capable of improving the degree of freedom in a stator.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention relates to a coil positioning method for a slotless motor in which an air core coil wound concentratedly is mounted on an inner peripheral surface of a stator core. After connecting the pin with burrs to the coil lead wire, insert the pin into the terminal block,
The pins and the substrate are connected.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a slotless motor showing an embodiment of the present invention, FIG. 2 is a perspective view showing connection of coils in FIG. 1, (a) is an overall view, and (b) is a partially enlarged view. . As shown in FIGS. 1 and 2A and 2B, first, the air-core coil 3 is equally arranged with a jig or the like, and after the pin 1 with the burrs 2 attached to the coil lead wire 4 is connected. Then, the pin 1 is inserted into the terminal block 6, and the pin 1 is connected to the substrate 5. Next, after the coil 3 is bonded and cured to the insulating sheet 9, molding is performed with a resin 7 for sealing the air-core coil 3. By adding the burrs 2 to the pin 1, the pin 1 does not fall off the terminal block 6, and the pin 1 is fixed at a fixed position. Therefore, even when the coil thickness is small, the positioning of the coil outlet is determined, so that the productivity is improved. Also, as shown in FIGS. 3A and 3B, the use of the pin 1 allows the position and shape of the coil outlet to be free, so that when the coil wire is a rectangular wire, the pin 1 is moved in the circumferential direction. If the shape is long, the substrate pattern 10 can be efficiently arranged, so that the inner diameter of the substrate 5 can be increased. Therefore, the inner diameter of the stator S is not restricted by the inner diameter of the substrate 5, so that the degree of freedom in the stator S is improved.

[0006]

As described above, according to the present invention, after connecting the pin with the burrs to the lead wire of the air-core coil, the pin is inserted into the terminal block, and the pin and the board are connected. There is an effect that a hollow structure is made possible by reducing man-hours by improving productivity and improving the degree of freedom in the stator.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a slotless motor showing an embodiment of the present invention.

FIG. 2 is a perspective view showing connection of coils in FIG. 1,
(A) is an overall view and (b) is a partially enlarged view.

FIG. 3 is a board connection diagram showing an example of the present invention when the coil wire is a rectangular wire, and (a) shows one surface of the board;
(B) is the other surface.

FIG. 4 is a side sectional view of a slotless motor showing a conventional technique.

FIG. 5 is a board connection diagram showing a conventional technique, wherein (a) shows one surface of the substrate and (b) shows the other surface.

[Explanation of symbols]

1: pin, 2: burrs, 3: air-core coil, 4: coil lead wire, 5: board,
6: terminal block, 7: resin,
8: stator core, 9: insulating sheet,
10: substrate pattern, S: stator,
R: Rotor

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Claims (1)

[Claims] In a method of positioning a coil of a slotless motor in which an air-core coil wound around an inner surface of a stator core is mounted, a pin with burrs added to a coil lead wire of the air-core coil is connected. Into the terminal block,
A method for positioning a coil lead wire of a slotless motor, comprising connecting a pin and a substrate.