JPS642575U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is an illustrative half-sectional view showing an embodiment of this invention. FIG. 2 is an illustrative view showing the position of magnetized bodies formed on the upper surface of the rotor. FIG. 3 is an illustrative view showing the positions of the frequency signal generating coil and the phase signal generating coil formed on the through-hole substrate. FIG. 4 is a sectional view of the through-hole substrate. Fifth
The figure is an illustrative view showing the position of the magnetized body in another embodiment. FIG. 6 is an illustrative view showing the positions of the frequency signal generating coil and the phase signal generating coil corresponding to the magnetized body of the embodiment shown in FIG. In the figure, 12 is a lower cylinder, 14 is a stator, 16 is a through-hole substrate, 32 and 34 are magnetized bodies, 36 is a frequency signal generation coil, 38 is a phase signal generation coil, and 44 and 52 are lead wiring patterns.

Claims (1)

[Claims for Utility Model Registration] 1. Magnetized bodies for speed detection that are magnetized with different polarities alternately in the upper direction of the rotational circumference of the rotor; and a magnetized body for phase detection that is provided near the magnetized body for speed detection; , a frequency signal generating coil provided on the substrate of the stator for generating a frequency signal in cooperation with the magnetized body for speed detection; and a frequency signal generating coil for generating a phase signal in cooperation with the magnetized body for phase detection. A brushless motor including a phase signal generating coil, wherein the substrate is a through-hole substrate, and the frequency signal generating coil and the phase signal generating coil are provided on a surface of the through-hole substrate facing the speed detection magnetized body and the phase detection magnetized body. forming a phase signal generating coil, and performing wiring for drawing out the frequency signal generating coil from one surface of the through-hole substrate;
A brushless motor, characterized in that wiring for drawing out the phase signal generating coil is provided from the other side. 2. Wiring for drawing out the frequency signal generating coil is on a side where the frequency signal generating coil is not formed, and wiring for drawing out the phase signal generating coil is on the side where the phase signal generating coil is formed. , respectively, the brushless motor according to claim 1, which is registered as a utility model. 3. Wiring for drawing out the frequency signal generating coil is on a surface where the frequency signal generating coil is formed, and wiring for drawing out the phase signal generating coil is on a surface on which the phase signal generating coil is not formed. A brushless motor according to Claim 1 of the Utility Model Registration Claim. 4. The phase detection magnetized body is provided outside the speed detection magnetized body in the radial direction of the rotor, and correspondingly, the phase signal generation coil is located on the through-hole substrate, A brushless motor according to any one of claims 1 to 3, which is formed on the outside. 5. The phase detection magnetized body is provided inside the speed detection magnetized body in the radial direction of the rotor, and correspondingly, on the through-hole substrate, the phase signal generation coil is provided on the inside of the frequency signal generation coil. A brushless motor according to any one of claims 1 to 3, which is formed inside.