JPS598454Y2 - motor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a motor, and in particular, it is an object of the present invention to provide a motor that is easy to assemble and adjust brushes, and has good performance.

Hereinafter, the present invention will be explained based on an embodiment shown in the drawings. Reference numeral 1 indicates a case made of a metal material and has a bottom surface, 2 a bearing fixed to the bottom surface of the case 1, 3 a rotating shaft, A rotor 4 has a plurality of coils 5 embedded in an insulator 6. 7 is a commutator, and the commutator and rotor 4 are fixed on the rotating shaft 3 and can rotate together with the rotating shaft 3.

Reference numeral 8 denotes a substantially donut-shaped bottom plate, which is made of a metal plate that is firmly fixed to the case 1 so as to close the open surface facing the bottom surface of the case 1, and has a half-opened part 8ae for placing a brush holder, which will be described later. , 9 is a position facing the coil 5,
A cylindrical magnet fixed to the bottom plate 8, 10 is a brush holder made of an insulating material holding a plurality of brushes 11 by embedding or the like, and has a substantially donut plate shape and a plurality of protrusions 10b; Bearing storage part 1 is installed with a bracket made from a metal plate.
2a, tatami mat storage part 12 A hole 1 provided in the damaged part of a
2b, an arcuate hole 12C', and a protrusion 12d, and the bearing storage part 12a of the bracket has another bearing 13 and a washer 14 made of a material with high wear resistance.
As shown in FIG. 1, the spring 15 for pressing the bearing 13 fitted to the protruding part 12d of the bracket 12 is fixed by snapping the tip of the protruding part 12d, and the spring 15 is used to press the bearing 13. 13 and washer 14,
Further, an adjustment screw 16 for adjusting the amount of thrust of the rotating shaft 3 is screwed into the screw hole 12 b of the bracket 12 .

The brush holder 10 also has a flange 10a in the radial direction.
A protrusion 10b and a brush holding part 10C are provided in the axial direction, the flange 10a is placed on the half-opening part 8a of the bottom plate 8, and the protrusion 10b and the brush holding part 10C are respectively attached to the bracket 12. into the arcuate hole 12C of the bracket 12C.
is superimposed on the bottom plate 8 and attached to the case 1 under pressure.

At this time, the flange 10a of the brush holder 10 is temporarily held between the half-opening part 8a of the bottom plate 8 and the bracket 12, and the brush holder 10 is rotated within the range of the arcuate hole 12C. By rotating this brush holder 10, the position of the brush 11 with respect to the commutator 7 is adjusted, and after the brush 11 is in the optimum position, the protrusion 10b of the brush holder 10 is adjusted. Melt the tip with heat etc. and insert it into the arcuate hole 12 of the bracket 12.
The brush holder 10 is fixed to the bracket 12 by filling the inside of C and hardening it.

Next, to explain how to assemble the motor of the present invention, first, a rotor 4 and a commutator 7 are attached to a bearing 2 fixed to a case 1.
The rotating shaft 3 with the magnet 9 attached thereto is inserted thereinto, and the bottom plate 8 with the magnet 9 attached thereon is compressed and fixed to the open surface of the case 1. With the brush 11 in contact with the commutator 7, the brush holder 10 is inserted. Place the flange 10a on the half-opened part 8a of the bottom plate 8,
Next, the bracket 12 with the spring 15, bearing 13, washer 14, and adjustment screw 16 attached is attached to the brush holder 10.
The brush holder 10 is attached to the bottom plate 8 and the bracket 12 so that the brush holder 10 is superimposed on the bottom plate 8 and fixed to the case 1 under pressure.
Temporarily fasten between.

Next, after rotating the brush holder 10 and adjusting the position of the brush 11 with respect to the commutator 7, the tip of the protrusion 10b of the brush holder 10 is deformed to fix the brush holder 10 to the bracket 12 and adjust the position. screw 16
The assembly is completed by adjusting the thrust amount of the rotating shaft.

That is, according to the present invention, a case having a bottom surface made of a metal material, a brush holder made of an insulating material and having a substantially donut plate shape and having a plurality of protrusions, and a brush holder that is attached to the brush holder. In a certain motor, the case includes a brush holder, a bottom plate having a substantially donut plate shape on which the brush holder is placed, and a bracket having a plurality of arcuate holes through which the protrusions of the brush holder are passed. The bottom plate is fixed to an open surface facing the bottom surface, the brush holder is placed on the bottom plate, and the protrusion of the brush holder is passed through the arcuate hole of the bracket, so that the brush holder can rotate. The bracket is fixed to the open surface of the case by being sandwiched between the bracket and the bottom plate, and the tip of the protrusion of the brush holder penetrated through the arcuate hole of the bracket is deformed. Since the brush holder is fixed in a fixed position at a predetermined position, the adjustment work is easy and a product with good performance can be obtained.
The motor of the present invention also includes a bottom plate 8, a brush holder 10,
Brackets 12 are stacked one on top of the other in order, and the brush holder 10 is assembled.
Since the motor is assembled by deforming the tip of the protrusion 10b, it is easy to assemble and has high productivity.Furthermore, the motor of the present invention has a simple structure and is fixed to the bracket by deforming the tip of the protrusion. This provides practical effects such as secure fixation and no risk of loosening during use.

[Brief explanation of the drawing]

Both figures show the motor of the present invention; FIG. 1 is a sectional view of the main part, and FIG. 2 is an exploded perspective view of the main part. 1... Case, 2... Bearing, 3... Rotating shaft, 4...
... Rotor, 5... Coil, 6... Insulator, 7...
・Commutator, 8...Bottom plate, 9...Magnet, 10...Brush holder, 11...Brush, 12...Bracket, 13...Bearing, 14...Washer 15...
Spring, 16...adjustment screw.

Claims (1)

[Scope of utility model registration request] A case having a bottom surface made of a metal material, a brush holder made of an insulating material and having a substantially donut plate shape and having a plurality of protrusions, and a brush attached to the brush holder;
A motor formed of a substantially donut plate-shaped bottom plate on which the brush holder is placed, and a bracket having a plurality of arcuate holes through which the protrusion force of the brush holder can pass, the motor facing the bottom surface of the case. The bottom plate is fixed to the open surface, the brush holder is placed on the bottom plate, the protrusion of the brush holder is passed through the arcuate hole of the bracket, and the brush holder is attached to the bracket so that the brush holder can rotate. The bracket is fixed to the open surface of the case by being supported between the bottom plate and the brush holder is fixed to the open surface of the case, and the brush holder is fixed to the bracket by deforming the tip of the protrusion of the brush holder that is penetrated through the arcuate hole of the bracket. A motor characterized in that the brush holder is fixed to a predetermined position by being fixed to the brush holder.