JP4564627B2 - Support mechanism for coreless wave type continuous coil - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a support mechanism for a corrugated continuous coil for a coreless coil motor, and more particularly, to a support mechanism for a coreless corrugated continuous coil that can ensure heat dissipation with a simple configuration without impairing the characteristics of the coreless type.
[0002]
[Prior art]
The coreless coil motor proposed by the present applicant in Japanese Patent Application No. 11-318808 is constituted by a coreless wave type continuous coil in which coil conductors are continuously formed in a wave shape. This coreless coil motor 101 is shown in FIG. In order to fix and support the coreless wave type continuous coil 102, which is a coil conductor, to the motor casing 103 on the stator side, as shown in the exploded configuration diagram of FIG. The part support member 104 constitutes a support mechanism.
Since the coil conductor 102 is fixedly supported by the end support member 104 without requiring an auxiliary member for fixing the coil in the magnetic space of the rotor, the magnetic air gap distance is reduced to the limit close to the magnetic pole of the rotor. Since it can be shortened, it is possible to improve the efficiency of the magnetic circuit and increase the generated torque by increasing the density of the magnetic flux.
Further, since the coil conductor 102 is exposed to the magnetic space without being hidden by the auxiliary member or the like, heat can be radiated from almost the entire surface of the coil conductor 102 and the heat of the coil conductor 102 can be obtained by the support mechanism. Therefore, it is possible to efficiently cool the coreless coil while ensuring the characteristics of the coreless coil.
[0003]
[Problems to be solved by the invention]
However, in order to cope with the increase in output accompanying the advancement of the required specification of the motor, it is required to efficiently cool the coreless coil. On the other hand, especially in the case of a sealed structure, air cooling cannot be expected. There's a problem.
[0004]
An object of the present invention is to provide a support mechanism for a coreless wave type continuous coil capable of ensuring heat dissipation with a simple configuration without impairing the characteristics of the coreless type.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problem, in order to fix and support a coreless wave type continuous coil in which a coil conductor is continuously formed in a wave shape to a motor casing on the stator side, heat for fixing and supporting one end portion of the coil conductor in the axial direction. In a support mechanism for a coreless wave type continuous coil comprising an end support member made of a conductive material, the coil conductor and the end support member are connected between the coil conductor and the end support member while the support end of the coil conductor is connected. This connection member has a thermal conductivity that helps heat transfer between the coil conductor and the end support member, and an electric insulation resistance that suppresses eddy current loss due to the magnetic field of the rotor. It is comprised from the electrically insulating heat conductive material which has these.
In this coreless wave type continuous coil support mechanism, the connecting member provided between the coil conductor and the end support member is made of an electrically insulating heat conductive material within a range surrounded by the coil conductor and the end support member. Therefore, heat is guided from the coil conductor to the end support member via the connection member, and at this time, since the connection member is electrically insulating, generation of eddy currents due to the magnetic pole on the rotor side is suppressed, and the connection member By being a plate-like member, the coil conductor and the end support member can be simply connected and configured.
By configuring the connecting member integrally with the end support member, the coil can be assembled without the need for assembling the connecting member, so that the motor assembling process can be simplified.
The connecting member includes an end plate portion that closes one end surface of the motor, and is configured integrally with the end support member, so that the connection member is processed in a separate process including a wiring circuit that configures the end plate portion as a circuit board. Therefore, the assembly process on the stator side can be simplified by assembling the coils.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the above invention will be described below with reference to the drawings.
FIG. 1 is a side view showing a support mechanism for a coreless wave type continuous coil according to the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG.
The coreless wave type continuous coil support mechanism 1 has one end portion in the axial direction of the coil conductor 2 in order to fix and support the wave type continuous coil in which the coil conductor 2 is continuously formed in a wave shape to the motor casing 5 on the stator side. It comprises a cylindrical end support member 3 made of a heat conductive material that fixes and supports the connecting member 4, 4 connecting the end support member 3 and the coil conductor 2.
[0007]
The connecting members 4 and 4 are in contact with the surface of the coil conductor 2 excluding the support end of the coil conductor 2 within a required magnetic gap, and between the coil conductor 2 and the end support member 3. Configure to connect.
[0008]
The specific configuration of the connecting members 4 and 4 is formed so as to be embedded in the range surrounded by the coil conductor 2 and the end support member 3 in close contact with each other, and bonded to each other with a heat conductive adhesive Fix it.
[0009]
The material of the connecting members 4 and 4 has an electrical insulation heat having a thermal conductivity that helps heat transfer between the coil conductor 2 and the end support member 3 and an electrical insulation resistance that suppresses eddy current loss due to the magnetic field of the rotor. Depending on the conductive material.
The electrical insulating heat conduction characteristics are practically sufficient if the thermal conductivity is 10 W / m · K or more and the volume resistivity is 10 ⁶ Ω · cm or more. For example, aluminum nitride (100 W / m · K, A ceramic material for an insulating substrate such as 10 ¹⁴ Ω · cm) can be used.
[0010]
The support mechanism of the coreless wave type continuous coil having the above-described configuration is such that the connecting member 4 is formed so as to be embedded between the end support member 3 and the coil conductor 2, thereby supporting the plate-like member capable of heat transfer at the end. It is possible to easily configure a support mechanism that can satisfy the heat dissipation while suppressing eddy current loss by connecting to a member.
[0011]
FIG. 3 is a side view showing a second configuration example of the support mechanism of the coreless wave type continuous coil according to the present invention.
The support mechanism 11 of the coreless wave type continuous coil according to the second configuration example is configured such that the connection member is integrated with the end support member 12, and comes into contact with the coil conductor 2 from the cylindrical end support member 12. Thus, the connecting portion 13 protrudes in the axial direction and is formed into a crown shape.
[0012]
In this coreless wave type continuous coil support mechanism, the connection member 4 is formed integrally with the end support member 3 so that the coil conductor 2 can be assembled without requiring the connection member 4 to be assembled. Can be simplified.
[0013]
FIG. 4 is a side view illustrating a third configuration example of the support mechanism for the coreless wave type continuous coil according to the present invention, and FIG. 5 is a plan view of FIG.
The support mechanism 21 for the coreless wave type continuous coil according to the third configuration example is configured by integrally connecting connection portions 23 and 23 and an end plate portion 24 to an end support member 22.
The connection part 23 is an example formed in a size corresponding to a required heat dissipation characteristic, and protrudes in the axial direction so as to be in contact with the coil conductor 2 from the cylindrical end support member 22.
The end plate portion 24 closes one end surface of the motor and forms a wiring pattern 24a using the end plate portion 24 as a circuit board, for example, mounting a circuit element 25 such as a Hall element for detecting the rotational angle position of the rotor. To do.
[0014]
Since the support mechanism for the coreless wave type continuous coil can be processed in a separate process including the wiring circuit constituting the end plate portion 24, the assembly process on the stator side can be simplified by assembling the coil. .
[0015]
【The invention's effect】
The support mechanism of the coreless wave type continuous coil of the present invention has the following effects.
This support mechanism for the coreless wave type continuous coil has a connecting member provided between the coil conductor and the end support member within the required magnetic gap, and is made of an electrically insulating heat conductive material. Heat is guided to the end support member via the connecting member, and at this time, since the connecting member is electrically insulating, generation of eddy current due to the magnetic pole on the rotor side is suppressed.
Therefore, the support mechanism for the coreless wave type continuous coil according to the present invention can ensure heat dissipation with a simple configuration without impairing the characteristics of the coreless type.
[Brief description of the drawings]
FIG. 1 is a side view showing a support mechanism for a coreless wave type continuous coil according to the present invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. FIG. 4 is a side view showing a third configuration example of a support mechanism for a coreless wave type continuous coil according to the present invention. FIG. 5 is a side view showing the third configuration example of FIG. Plan view [Figure 6] Exploded view of coreless coil motor [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support mechanism of coreless wave type continuous coil 2 Coil conductor 3 End support member 4 Connection member 5 Motor casing 11 Support mechanism of coreless wave type continuous coil 12 End support member 13 Connection part 21 Support mechanism 22 of coreless wave type continuous coil End support member 23 Connection portion 24 End plate portion 24a Wiring pattern 25 Mounting element

Claims (3)

In order to fix and support the coreless wave type continuous coil in which the coil conductor is continuously formed in a wave shape to the motor casing on the stator side, from the end support member by the heat conductive material that fixes and supports one end in the axial direction of the coil conductor In the support mechanism of the coreless wave type continuous coil
A connecting member that further connects the coil conductor and the end support member with the support end of the coil conductor connected is embedded in close contact with the range surrounded by the coil conductor and the end support member. So that
The connecting member is made of an electrically insulating heat conductive material having a heat conductivity that helps heat transfer between the coil conductor and the end support member and an electric insulating resistance that suppresses eddy current loss due to the magnetic field of the rotor. The support mechanism of the coreless wave type continuous coil. In order to fix and support the coreless wave type continuous coil in which the coil conductor is continuously formed in a wave shape to the motor casing on the stator side, from the end support member by the heat conductive material that fixes and supports one end in the axial direction of the coil conductor In the support mechanism of the coreless wave type continuous coil
A connection member for further connecting between the coil conductor and the end support member while connecting the support end of the coil conductor is provided integrally with the end support member,
The connecting member is made of an electrically insulating heat conductive material having a heat conductivity that helps heat transfer between the coil conductor and the end support member and an electric insulating resistance that suppresses eddy current loss due to the magnetic field of the rotor. The support mechanism of the coreless wave type continuous coil. In order to fix and support the coreless wave type continuous coil in which the coil conductor is continuously formed in a wave shape to the motor casing on the stator side, from the end support member by the heat conductive material that fixes and supports one end in the axial direction of the coil conductor In the support mechanism of the coreless wave type continuous coil
A connection member that further connects the coil conductor and the end support member while the support end of the coil conductor is connected is configured integrally with the end support member, including an end plate that closes one end face of the motor. Provided,
The connecting member is made of an electrically insulating heat conductive material having a heat conductivity that helps heat transfer between the coil conductor and the end support member and an electric insulating resistance that suppresses eddy current loss due to the magnetic field of the rotor. The support mechanism of the coreless wave type continuous coil.

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