JPS6316307Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a signal generator having a permanent magnet rotor.

Conventionally, this type of generator has been used, for example, by being mounted on a control motor, and its structure is such that, as shown in FIG. 1, a permanent magnet rotor b and a commutator c are opposed to each other with respect to an armature core a. Because the structure allows
The power generation winding yoke d and the winding e are field permanent magnets f.
is located on the opposite side of the brush g, and therefore the winding e
The lead wire must be introduced into the control circuit i by the power generation winding lead wire h. As a result, the structure and wiring become complicated, leading to problems such as breakage of the lead wire and electromagnetic induction interference due to the routing of the lead wire.

The purpose of this invention is to provide a signal generator that can overcome the above-mentioned problems by omitting a long lead wire drawn out from the signal generator winding.

Therefore, according to the signal generator of this invention, the axis of rotation of the rotating body is perpendicular to the wiring board, and the rotating body connects the commutator and signal generator in order from the side closest to the wiring board in the axial direction. A permanent magnet rotor for a signal generator is equipped with a permanent magnet rotor and an armature core, and a lead wire for the armature winding is passed through a guide groove formed in a non-magnetized part between magnetized magnetic poles of a permanent magnet rotor for a signal generator. It is connected to the commutator, and the signal generator winding is assembled to the wiring board.

Examples of this invention will be described below with reference to FIGS. 2 to 6.

FIGS. 2 and 3 are a sectional view and a plan view showing an example of the signal generator of this invention. The rotating body includes a permanent magnet rotor 2 for a signal generator, a commutator 3, and an armature core 4. This rotating body includes a permanent magnet rotor 2 for a signal generator housed in a bracket 1 of an electric motor. The power generation winding yoke 5 and the winding 6, which are interposed between the commutator 3 and the armature core 4, and therefore face the rotor 2, can be located almost on the same plane as the brush 7, Due to the circuit design, one side of the lead wire of the power generation winding 6 can be shared with the brush lead wire 8, and by integrating the brush mounting board 9 with the wiring board 10 of the control circuit of the motor, the control circuit and the brush lead wire can be connected. 8 and the lead wire of the power generation winding 6 can be formed by a pattern on the wiring board 10.

Note that 11 is a permanent magnet for the field of the electric motor, and 12 is a control circuit component.

By configuring as above, it is possible to simplify the structure and wiring of the generator, and also to prevent breakage of the lead wire and electromagnetic induction interference due to the routing of the lead wire (which may or may not be caused). It is possible to eliminate such troubles.

Note that during actual manufacturing, in order to lead the lead wire 14 of the armature winding 13 of the motor to the commutator 3, it must be passed through the outer surface of the permanent magnet rotor 2, and then passed through a narrow gap with the power generation winding yoke 5. Since it is impossible to wire to the rotor 2, a method can be considered to provide a through hole in the rotor 2 and connect the wire tangent to the commutator 3 through the through hole.
Since this method has poor workability, this invention uses a structure as shown in FIGS. 4a and 5b or 5a and 5b. That is, in the case shown in FIGS. 4a and 4b, the lead wire 14 of the armature winding 13 is connected to the non-magnetized portion 2b between the magnetized magnetic poles on the outer peripheral surface 2a of the rotor 2.
In addition, in the case shown in FIG. One surface portion 2d of the rotor 2 from the surface 2a
This figure shows a case in which the yoke 5' is formed in an inclined shape toward the yoke 5', and in this case, the shape of the yoke 5' can be changed as shown in FIG.

In this way, according to this invention, the rotating body, whose axis of rotation is perpendicular to the wiring board, has a commutator, a permanent magnet rotor for a signal generator, and an electric motor in order from the side closest to the wiring board in the axial direction. Since the signal generator winding is assembled to the wiring board, the long lead wire drawn out from the signal generator winding can be omitted, and the disconnection that conventionally occurs due to the long wiring can be avoided. Problems such as electromagnetic induction interference can be solved, and the structure and wiring can be simplified. Further, when the signal generator winding is assembled to the wiring board, one of the signal generator winding lead wire and the brush lead wire can be made common, thereby reducing the number of lead wires.

Furthermore, since the permanent magnet rotor for the signal generator is located between the armature core and the commutator in the axial direction of the rotating body, the lead wire for the armature winding is connected to the permanent magnet rotor for the signal generator. However, in this invention, the armature winding lead wire is passed through the guide groove formed in the non-magnetized part between the magnetized magnetic poles of the permanent magnet rotor for the signal generator, and the lead wire is passed through the commutator. Therefore, the assembly of the armature winding lead wire can be simplified.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional signal generator, Fig. 2 is a sectional view of the signal generator of this invention, Fig. 3 is a plan view thereof, and Figs. 4 a and b are plan views of a rotor in this invention. 5a and 5b are a partially sectional side view and a bottom view showing another embodiment of the rotor in this invention, and FIG. 6 is a sectional view showing another embodiment of this invention. It is a diagram. In the figure, 2...rotor, 2a...outer peripheral surface,
2b...Non-magnetized part, 2, 2c'...Groove, 2d...Surface part, 3...Commutator, 4...Armature core, 5,
5'... Generation winding yoke, 6... Winding wire, 7... Brush, 8... Brush lead wire, 9... Brush mounting board, 10... Wiring board, 13... Armature winding, 1
4...This is a lead wire of the armature winding 13.

Claims (1)

[Scope of utility model registration request] The rotational axis of the rotating body is perpendicular to the wiring board, and the rotating body includes a commutator, a permanent magnet rotor for a signal generator, and an armature core in order from the side closest to the wiring board in the axial direction. , the armature winding lead wire is connected to the commutator by passing through a guide groove formed in the non-magnetized part between the magnetized magnetic poles of the permanent magnet rotor for the signal generator, and A signal generator characterized in that a wire is assembled to the wiring board.