KR100830646B1 - Starter Stopping Noise Reduction with the modification of segments - Google Patents

Abstract

The present invention relates to a stopping noise prevention device of the start motor, the main object of the invention is to give a structural change of the brush and brush assembly in contact with the rotating rectifier by the excess rotational force of the amateur assembly, so that the sound waves due to friction irregular It's about to get up, and it's buried in the engine's noise, so it's low enough to hear it.

Characteristic constituent means of the present invention for achieving the above object is an over-connected to the front end of the housing 10, the amateur assembly 40, the stator 20, the brush assembly 30, and the shaft 41 A running clutch 60, a pinion 50 condensed on the overrunning clutch 60, a magnet switch assembly 80 fastened and fixed to the front bracket on an outer circumferential surface of the housing, and the magnet switch assembly 80. ) Is a start motor including a lever 70 for operating the overrunning clutch 60 by a plunger plunger of the), wherein the brush assembly 30 is a brush 31, a brush to induce vibration to be irregular. At least one of the spring 32 and the brush holder 33 is provided with an irregular vibration inducing means 100.

Start Motor, Stopping Noise, Brush, Commuter

Description

Starter Stopping Noise Reduction with the modification of segments

1 is a configuration diagram of a start motor

2 is a block diagram of a brush assembly and a commutator

Figure 3 is a front view showing a brush holder assembly of the present invention

4 is a schematic view showing an improved brush of the present invention;

5 is a perspective view of a brush applied to the present invention

7 is a schematic view showing an improved brush spring of the present invention;

8 is a schematic view showing an improved brush holder of the present invention.

9 is an explanatory diagram showing the effect of the present invention

<Code Description of Main Parts of Drawing>

10: housing 20: stator

30: brush assembly 31: brush

31a: contact portion 31b: contact surface

40: amateur assembly 41: shaft

42: Commuter 50: Pinion

60: overrunning clutch 70: lever

80: magnet switch assembly 100: irregular vibration induction means

The present invention relates to a stopping noise preventing device of the start motor, and more particularly, to improve the structure of the brush assembly is characterized by lowering the vibration sound caused by the friction of the brush.

In general, a starter for an automobile may have a front bracket, a housing 10, a rear bracket, and an amateur assembly 40 fixed to a shaft 41 therein, and the amateur assembly 40 as shown in FIG. A stator 20 including magnets 41 fixed to an inner circumferential surface of the housing 10, a brush assembly 30 for supplying power to the amateur assembly, and a tip of the shaft 41. An overrunning clutch 60 connected to the pinion 50, a pinion 50 condensed to the overrunning clutch 60, and a magnet switch assembly 80 fastened and fixed to the front bracket on an outer circumferential surface of the housing; It comprises a lever 70 for operating the overrunning clutch 60 by the plunger plunger of the assembly 80.

The start motor is started when the pinion 50 is installed so that the pinion 50 is engaged with a ring gear (not shown) of the engine, and the start motor is activated to start the pinion 50. It is activated to start the engine by rotating the ring gear.

When the engine is started and operated normally, since the rotational force of the ring gear is faster from the moment, it is transmitted to the rotation shaft of the start motor, and the rotational force transmitted in this way is short-circuited by the overrunning clutch 60.

At this time, the armature assembly 40 of the rotating shaft is further rotated for a predetermined time (about 1 to 5 seconds) by the rotational inertia of the engine after providing the starting power of the engine bar, such a surplus rotation commutator ( Between the 42 and the brush 31, vibration caused by friction is generated.

The vibration transmits vibrations over the armature assembly 40, the magnet 41 around it, and the magnet holder 42, which generates stop noise while the armature assembly is fully stopped. will be.

On the other hand, there are conventionally proposed ones for the purpose of reducing such stopping noise.

That is, a circuit solution for causing the organic current flowing in the P coil and the H coil inside the solade to be grounded as soon as possible is known as a patent application No. 2002-29876 (Static Motor Reduction Circuit of Start Motor). It was only an effort to reduce the time that noise occurs, but it did not prevent the occurrence of noise inherently.

In addition, Patent Application No. 2004-64558 (Stopping noise prevention device of the start motor) intervenes a shock absorbing member between the magnets inside the housing, but this is also intended to block the transmission of vibration that has already occurred, It was not a rescue.

Therefore, the present invention proposes to solve the conventional problems as described above. The main object of the present invention is to give a structural change of the brush and brush assembly in contact with the rotating rectifier by the excess rotational force of the amateur assembly, so that the sound waves are irregular due to friction. It is caused to be lowered to a low vibration level that can not be heard by the engine noise.

 Characteristic constituent means of the present invention for achieving the above object is an amateur assembly comprising a front bracket, a housing comprising a rear bracket, a commutator while being fixed to a shaft therein, and around the amateur assembly A stator including magnets fixed to an inner circumferential surface of the housing, a brush assembly for supplying power by contacting a commutator of the amateur assembly, an overrunning clutch connected to the tip of the shaft, and condensed to the overrunning clutch A starter motor comprising a pinion and a magnet switch assembly fastened to and fixed to the front bracket on one side of the outer circumferential surface of the housing, and a lever configured to operate the overrunning clutch by a protruding plunger of the magnet switch assembly. Assembly is made by having a, a brush, a brush spring, random vibration guide means on at least one of the brush holder in order to induce vibrations to the irregularities.

In this case, the irregular vibration inducing means is that the plurality of brushes included in the brush assembly is formed by the contact portions of different shapes.

In addition, the irregular vibration inducing means is formed by forming a plurality of brushes included in the brush assembly have a contact width of different sizes.

In addition, the irregular vibration inducing means is formed by forming a plurality of brushes included in the brush assembly to have a contact surface of different roughness.

In addition, the irregular vibration inducing means is formed by forming a plurality of brushes included in the brush material of different materials.

In addition, the above-mentioned irregular vibration inducing means is that the plurality of brushes included in the brush assembly is formed by forming a multi-layered material of different materials in the center and the outer surface portion of the inside.

In addition, the irregular vibration inducing means is that the brushes included in the brush assembly is to use brush springs of different elastic size.

In addition, the irregular vibration inducing means is configured so that the brushes included in the brush assembly are supported by brush holders of different materials.

In addition, the above-mentioned irregular vibration inducing means is configured such that the brushes included in the brush assembly are supported by brush holders having different thickness dimensions.

Hereinafter, the detailed configuration and operation of the present invention will be described in sequence through the drawings according to each embodiment.

First, as shown in FIG. 1, the start motor is composed of an amateur assembly including a front bracket, a housing 10 including a rear bracket, and a communicator 42 fixed to the shaft 41 therein. A stator 20 comprising magnets 41 fixed to the inner circumferential surface of the housing 10 around the armature assembly 40 and the commutator 42 of the armature assembly in contact with the power source. A brush assembly 30 for supplying the gas, an overrunning clutch 60 connected to the front end of the shaft 41, a pinion 50 condensed to the overrunning clutch 60, and an outer circumferential surface of the housing And a lever 70 for operating the overrunning clutch 60 by a plunger plunger of the magnet switch assembly 80 and a magnet switch assembly 80 fastened to the front bracket. Becomes the lure, it is accompanied with the conventional SOI.

As shown in FIG. 2, the brush assembly 30 includes a plate 34, a brush holder 33 fixed inside the plate, a brush 31 assembled inside the brush holder, and the brush. Consists of a brush spring 32 that supports the rear of the, each of the brushes 31 are connected to the cable 35.

At this time, the present invention is divided into the first embodiment to improve the brush 31, the second embodiment to improve the brush spring 32 and the third embodiment to improve the brush holder 33. do.

Example 1

First, as shown in FIG. 4, four brushes 31 are represented, and the cylindrical surface of the communicator 42, that is, the contact portions 31a in contact with each segment 42a are formed differently.

For example, one is formed in an inward arc shape so as to be in wide contact with the surface of the cylindrical commutator 42, and the other is formed in an outward arc shape so as to be in narrow contact with the surface of the cylindrical commutator 42 or is formed in a straight line.

In another embodiment, irregular vibration may be caused by differently forming the roughness of the contact surface 31b of the contact portion.

In this manner, even if vibrations are generated by the respective segments 42a, sound waves corresponding to the vibrations are reduced.

In addition, as shown in FIG. 5, the widths W of the brushes 31 are formed differently to induce vibrations to be irregular.

For example, the widths W of the four brushes 31 may be different from each other, and brushes facing each other with the communicator 42 therebetween are formed to be different from the same and adjacent other brushes 31. can do.

On the other hand, the brush 31 of the present invention can cause irregular vibration by varying the material. For example, most brushes are made of copper in consideration of the flow of electric current, so that brushes adjacent to each other may cause irregular vibration when they are made of other materials or copper alloy.

On the other hand, the above-mentioned irregular vibration inducing means 100 is composed of a multi-layer of the material of the brush unit itself as shown in Figure 6 for the purpose of improving the frictional sliding characteristics of the brush over each segment, the inside and the outside Can be made of different materials.

For example, the central part 31c in the brushes 31 is made of the same or similar material as the existing brush, and the outer surface part 31d is made of a material having good sliding or lubricating properties.

By doing this, it is possible to reduce the vibration by reducing the sliding resistance while maintaining the existing electrical characteristics.

Example 2

In the present invention, as shown in FIG. 7, the brush spring 32 is provided for each of the four brushes 31, and the thickness d or the elastic modulus of the respective brush springs 32 is different. Using spring material), the vibration when contacting the commutator can also be irregular.

Example 3

In addition, as shown in FIG. 8, irregular thicknesses may be caused by using different thicknesses t of the brush holders 33.

For example, each of the four brush holders 33 may have different thicknesses t, and brush holders facing each other with the communicator 42 therebetween have the same thickness and are different from other adjacent brushes 31. It can be formed to be different from each other.

In addition, the brush holders 33 as described above may also cause irregular vibrations if the respective materials are made of a material such as steel or plastic to be different from each other.

The working state of the present invention configured as in the above embodiment will be described.

When the key is turned on to start the car, power is supplied to cause the armature assembly 40 to rotate like a normal start motor, and the rotational force causes the pinion 50 to start the engine. .

When the start-up is completed, friction is sustained by the excess rotational force because the inertia of the amateur assembly 40, that is, the brush 31 of the brush assembly 30 is in contact with the commutator 42 when there is an excess rotational force.

At this time, in the present invention, since there is an irregular vibration inducing means 100 including at least one of the brush 31, the brush spring 32, or the brush holder 33 of the brush assembly 30, the vibration is not necessarily generated irregularly. do.

Therefore, these irregular sound waves are weak compared to the existing stop noise, buried in the engine noise, the driver does not feel well, the rotational inertia is weakened and will disappear soon.

This phenomenon can be seen through FIG. 12 comparing the conventional noise diagram with the noise diagram of the present invention.

According to the present invention described above in detail, since the segments of the rectifier rotating by the excess rotational force (rotational inertia) of the amateur assembly are rotated in contact with the irregular friction inducing means of the brush assembly, vibration caused by friction occurs irregularly.

Therefore, since the sound wave size is small due to vibration, the noise is smaller than the conventional stop noise, which is a low vibration sound that can not be heard by the engine noise, so that consumers do not feel it, thus providing a start motor that prevents the stopping noise. You can do it.

delete

Claims (9)

delete delete delete An amateur assembly 40 comprising a front bracket, a housing 10 including a rear bracket, a communicator 42 fixedly attached to a shaft 41 therein, and a circumference of the amateur assembly 40. A stator 20 including magnets 41 fixed to an inner circumferential surface of the housing 10, a brush assembly 30 for supplying power to the commutator 42 of the amateur assembly, and the shaft An overrunning clutch 60 connected to the tip of the head 41, a pinion 50 condensed on the overrunning clutch 60, and a magnet switch assembly 80 fastened and fixed to the front bracket on one side of the outer circumferential surface of the housing. And a lever 70 for operating the overrunning clutch 60 by the plunger plunger of the magnet switch assembly 80, wherein the brush assembly 30 is configured so that vibration is irregular. For attempting, in the brush 31, the brush springs 32, a starter motor having been made in the brush holder (33) at least a vibration inducing means 100 is irregular in any one of, The above-mentioned irregular vibration inducing means 100 is formed by forming a plurality of brushes 31 included in the brush assembly 30 to have contact surfaces 32a of different roughness. . An amateur assembly 40 comprising a front bracket, a housing 10 including a rear bracket, a communicator 42 fixedly attached to a shaft 41 therein, and a circumference of the amateur assembly 40. A stator 20 including magnets 41 fixed to an inner circumferential surface of the housing 10, a brush assembly 30 for supplying power to the commutator 42 of the amateur assembly, and the shaft An overrunning clutch 60 connected to the tip of the head 41, a pinion 50 condensed on the overrunning clutch 60, and a magnet switch assembly 80 fastened and fixed to the front bracket on one side of the outer circumferential surface of the housing. And a lever 70 for operating the overrunning clutch 60 by the plunger plunger of the magnet switch assembly 80, wherein the brush assembly 30 is configured so that vibration is irregular. For attempting, in the brush 31, the brush springs 32, a starter motor having been made in the brush holder (33) at least a vibration inducing means 100 is irregular in any one of, The random vibration inducing means 100 is a start motor to prevent the stopping noise, characterized in that by forming a plurality of brushes 31 included in the brush assembly 30 made of different materials. An amateur assembly 40 comprising a front bracket, a housing 10 including a rear bracket, a communicator 42 fixedly attached to a shaft 41 therein, and a circumference of the amateur assembly 40. A stator 20 including magnets 41 fixed to an inner circumferential surface of the housing 10, a brush assembly 30 for supplying power to the commutator 42 of the amateur assembly, and the shaft An overrunning clutch 60 connected to the tip of the head 41, a pinion 50 condensed on the overrunning clutch 60, and a magnet switch assembly 80 fastened and fixed to the front bracket on one side of the outer circumferential surface of the housing. And a lever 70 for operating the overrunning clutch 60 by the plunger plunger of the magnet switch assembly 80, wherein the brush assembly 30 is configured so that vibration is irregular. For attempting, in the brush 31, the brush springs 32, a starter motor having been made in the brush holder (33) at least a vibration inducing means 100 is irregular in any one of, The irregular vibration inducing means 100 is that the plurality of brushes 31 included in the brush assembly 30 is formed by forming a central material 31c and an outer surface portion 31d of a multilayer material of different materials. Start motor which prevents stopping noise characterized by. delete An amateur assembly 40 comprising a front bracket, a housing 10 including a rear bracket, a communicator 42 fixedly attached to a shaft 41 therein, and a circumference of the amateur assembly 40. A stator 20 including magnets 41 fixed to an inner circumferential surface of the housing 10, a brush assembly 30 for supplying power to the commutator 42 of the amateur assembly, and the shaft An overrunning clutch 60 connected to the tip of the head 41, a pinion 50 condensed on the overrunning clutch 60, and a magnet switch assembly 80 fastened and fixed to the front bracket on one side of the outer circumferential surface of the housing. And a lever 70 for operating the overrunning clutch 60 by the plunger plunger of the magnet switch assembly 80, wherein the brush assembly 30 is configured so that vibration is irregular. For attempting, in the brush 31, the brush springs 32, a starter motor having been made in the brush holder (33) at least a vibration inducing means 100 is irregular in any one of, The start vibration of the stopping noise is prevented, characterized in that the irregular vibration inducing means 100 is configured such that the brushes 31 included in the brush assembly 30 are supported by brush holders 33 of different materials. An amateur assembly 40 comprising a front bracket, a housing 10 including a rear bracket, a communicator 42 fixedly attached to a shaft 41 therein, and a circumference of the amateur assembly 40. A stator 20 including magnets 41 fixed to an inner circumferential surface of the housing 10, a brush assembly 30 for supplying power to the commutator 42 of the amateur assembly, and the shaft An overrunning clutch 60 connected to the tip of the head 41, a pinion 50 condensed on the overrunning clutch 60, and a magnet switch assembly 80 fastened and fixed to the front bracket on one side of the outer circumferential surface of the housing. And a lever 70 for operating the overrunning clutch 60 by the plunger plunger of the magnet switch assembly 80, wherein the brush assembly 30 is configured so that vibration is irregular. For attempting, in the brush 31, the brush springs 32, a starter motor having been made in the brush holder (33) at least a vibration inducing means 100 is irregular in any one of, The above-mentioned irregular vibration inducing means 100 is a brush (31) included in the brush assembly 30 is started so that the stopping noise is prevented, characterized in that configured to be supported by a brush holder 33 of different thickness (t) motor.

Images