KR19990040783A - Start-up detection device of starting motor - Google Patents

Abstract

The present invention relates to a starting failure detection device of the starting motor, is installed in the brush 13 of the starting motor 10, when the brush 13 is worn over a certain amount of contact with the commutator 14 of the commutator 14 A first conductor 100 through which current is detected; A second that is installed on the mica 15 between the commutator 14 pieces of the starting motor 10 and is in contact with the brush 13 when the commutator 14 is worn for a predetermined amount or more and the current of the brush 13 is detected. A conductor 200; An oar gate 300 having one end connected to the first and second conductors 100 and 200 to receive their output signals and output a control signal according to the input signal; One end is connected to the battery (B) and the other end is connected to the oal gate 300 is configured to include a warning lamp 400 for informing the user of the abnormality of the starting motor 10, the brush and commutator of the starting motor By detecting wear and notifying the vehicle user, it is easy to identify the cause of the start-up failure of the vehicle, improving the maintainability, and by detecting the wear of the brush and commutator of the starting motor, the vehicle user can be notified of the exact time of replacement of the starting motor. .

Description

Start-up detection device of starting motor

The present invention relates to a start failure detection device for a starter motor, and more particularly, to a start failure detection device for a starter motor to detect the degree of wear of the brush and commutator in the starter motor to inform the vehicle user of the abnormality of the starter motor.

Generally, a conventional starting motor includes an armature coil 11, a brush 13, and a commutator 14, as shown in FIGS. 1 and 2.

The armature coil 11 is wound around the armature core 13 to generate a current, is installed on one side of the starting motor 10 and is connected to the battery.

In addition, the brush 13 is installed around the commutator 14 to allow the electric current flowing in the armature coil 11 to come in and out while making sliding contact with the commutator 14. Here, four brushes 13 are installed at the periphery of the commutator 14, two are installed at the insulation holder, and two are installed at the ground holder to supply and discharge current.

In addition, the commutator 14 is positioned at the end of the armature shaft 16 of the starting motor 10 so that the current supplied from the brush 13 flows only in a predetermined direction and is connected to the brush 13. Here, the commutator 14 pieces are insulated with mica 15 having a thickness of about 1 mm, and are 0.5 to 0.8 mm undercut from the commutator 14 pieces. An undercut is a groove made between the commutator 14 and the commutator 14 pieces and has a depth of 0.5 to 0.8 mm and a limit value of 0.2 mm.

Hereinafter, the operation of the conventional starting motor will be described.

First, when the vehicle user supplies power to the starting motor 10 to start, the brush 13 and the commutator 14 supply current to the armature coil 11. As a result, the direction of the current flowing to both sides of the armature coil 11 is reversed, and the distribution of the magnetic field is different. Therefore, rotational force is generated and rotates the armature shaft 16 installed in the magnetic field region. Therefore, the armature shaft 16 is rotated so that the pinion gear (not shown) and the crank shaft (not shown) engaged therewith are rotated to start the vehicle.

However, when the starter motor is used for a predetermined time or more, rotation of the starter motor 10 is stopped due to abrasion of the brush 13 and the commutator 14 and even the starter motor 10 is stopped.

In addition, since the starting motor is installed inside the vehicle body, there is another problem that the vehicle user and the mechanic have difficulty in determining when to perform maintenance or replacement.

The present invention devised to solve the problems as described above, if the degree of wear of the brush and commutator in the starter motor is a certain amount or more to inform the user of the cause of the starting failure due to the starter motor failure to improve the maintainability of the vehicle The purpose is to make it.

In addition, it is another object to detect the wear of the brush and commutator of the starting motor so that the vehicle user can accurately determine the replacement time.

1 is a configuration diagram showing a state of a conventional starting motor,

2 is a cross-sectional view of a conventional starting motor,

3 is a block circuit diagram of a start failure detection device for a starting motor according to the present invention;

4 is a state diagram showing the first and second conductors of the starting failure detection device of the starting motor according to the present invention installed in the commutator and the brush of the starting motor.

* Description of the symbols for the main parts of the drawings *

10: starting motor 11: armature coil

12: armature iron core 13: brush

14: commutator 15: mica

16: armature shaft 100: first conductor

200: second conductor 300: OR gate

400: Warning lamp IGN: Ignition switch

B: Battery Q: Transistor

D: Diode

The apparatus for detecting starting failure of a starting motor according to the present invention includes: brush wear detecting means installed on a brush of a starting motor and detecting when the brush is worn over a predetermined amount and outputting a signal; Commutator wear detection means installed on one side between the commutator pieces of the starting motor and outputting a signal when the commutator wears out a predetermined amount; A logic circuit means having one end connected to the brush wear detecting means and the commutator wear detecting means and receiving an output signal thereof and outputting a control signal according to the input signal; It is installed in the vehicle, one end is connected to the battery and the other end is connected to the logic sensing means comprises a display means for notifying the vehicle user of the abnormality of the starting motor.

Hereinafter, a preferred embodiment of a start failure detection device for a starting motor according to the present invention will be described in detail with reference to the accompanying drawings. The same parts as in the prior art will be described with the same reference numerals.

Figure 3 is a block circuit diagram of a start failure detection device of the starting motor according to the present invention, Figure 4 is a state in which the first and second conductors of the start failure detection device of the starting motor according to the present invention is installed on the commutator and the brush of the starting motor It is a state diagram shown.

First, a start failure detection device of a starting motor according to the present invention includes a first conductor 100, a second conductor 200, an oal gate 300, and a warning lamp 400.

The first conductor 100 is an oal connected to the other end of the current detected by the commutator 14 when the brush 13 is worn over the limit value (for example, 1/3 of size) and contacts the commutator 14. It is fixedly installed on one side of the brush 13 to output to the gate 300. The other end of the first conductor 100 is connected to the oal gate 300. Here, the side surface of the first conductor 100 is wrapped in an insulator and fixed to the brush 13. The insulator prevents the first conductor from malfunctioning due to the current of the brush 13. The second conductor 200 is located at a position where the wear limit value of the commutator 14 is set in the mica 15. Is installed. Therefore, the second conductor 200 is in contact with the brush 13 when the commutator 14 wears more than the wear limit amount (the available size of the commutator must be 0.3 mm or more). When the current is detected in the second conductor 200 in contact with the brush 13, the detected current is output to the oar gate 300 connected to the other end thereof. The other end of the second conductor 200 is connected to the oal gate 300.

The OR gate 300 is first connected to signal output terminals of the first and second conductors 100 and 200 so as to output a control signal according to an input signal. The other end of the oar gate 300 is connected to the warning lamp 400 through the transistor Q. Here, a diode (D) is installed at the signal output terminal of the first and second conductors 100 and 200 to prevent current from flowing into the first and second conductors 100 and 200.

In addition, the warning lamp 400 is installed on one side of the vehicle interior to notify the vehicle user of the wear of the brush 13 and the commutator 14, one end is connected to the transistor (Q). The other end of the warning lamp 400 is connected to the ignition switch (IGN) is supplied with the battery (B) power.

Hereinafter, the operation of the start failure detection device of the starting motor according to the present invention will be described.

First, the vehicle user operates the starting motor 10 to start the vehicle, and the brush 13 contacts the commutator 14 due to the wear of the brush 13 while the starting motor 10 is operated. When the current of 14 is detected by the first conductor 100, the first conductor 100 supplies a current to the oar gate 300 connected thereto. Then, the gate gate 300 receives a current through the first conductor 100 and outputs a "high" signal to the transistor Q connected thereto. As a result, when power is supplied to the warning lamp 400 connected to the transistor Q, the warning lamp 400 is turned on to warn the vehicle user of wear of the brush 13.

When the commutator 14 is in contact with the brush 13 due to the wear of the commutator 14 during startup of the vehicle, when the current of the brush 13 is detected by the second conductor 200, the second conductor ( 200 outputs a signal to the oar gate 300 connected thereto. Then, the gate gate 300 receives a current through the second conductor 200 and outputs a "high" signal to the transistor Q connected thereto. Therefore, when power is supplied to the warning lamp 400 connected to the transistor Q, the warning lamp 400 is turned on to warn the wearer of the commutator 14 to the vehicle user.

In addition, when the brush 13 and the commutator 14 are in contact with the commutator 14 and the brush 13 due to the wear of the brush 13 and the commutator 14 during the starting of the vehicle, their currents are detected by the first and second conductors 100 and 200. The first and second conductors 100 and 200 output signals to the oar gate 300 connected thereto. The false gate 300 receives a signal and outputs a "high" signal to the transistor Q connected thereto. As a result, when power is supplied to the warning lamp 400 connected to the transistor Q, the warning lamp 400 is turned on to warn the vehicle user of wear of the brush 13 and the commutator 14.

On the contrary, when the brush 13 and the commutator 14 are not normal and the first conductor 100 and the second conductor 200 do not output a signal to the oar gate 300 during the starting of the vehicle, the oal gate. 300 outputs a " low " signal to transistor Q. The " low " Therefore, since power is not supplied to the warning lamp 400, the warning lamp 400 is kept off.

As described above, the present invention detects the wear level of the starting motor brush and the commutator and informs the user of the vehicle so that the cause of the starting failure of the vehicle can be easily identified, thereby improving the maintainability.

In addition, by detecting the degree of wear of the brush and commutator of the starting motor, there is another effect that can inform the vehicle user of the correct replacement timing of the starting motor.

Claims (6)

Brush wear detection means installed in the brush of the starting motor and contacting the commutator when the brush is worn for a predetermined amount or more and detecting a signal; Commutator wear detection means installed on one side between the commutator pieces of the starting motor and contacting the brush when the commutator wears a predetermined amount or more and detects a signal; A logic circuit means having one end connected to the brush wear detecting means and the commutator wear detecting means and receiving an output signal thereof and outputting a control signal according to the input signal; One end is connected to the battery and the other end is connected to the logic sensing means comprising a display means for informing a vehicle user of the abnormality of the starting motor comprises a start failure detection device of the starting motor. The method of claim 1, wherein the brush wear detection means is fixed to one side of the brush so that the current of the commutator is detected when the brush is worn over a predetermined amount and contact the commutator and the other end is connected to the logic circuit means And a second conductor for outputting an input signal through a circuit means. 3. The start failure detecting apparatus of claim 2, wherein the first conductor has a side surface wrapped with an insulator so as not to be affected by the current flowing through the brush, and is fixedly installed at a wear limit value position of the side of the brush. According to claim 1, wherein the commutator wear detection means is fixed to one side of the mica so that the current of the brush is detected when the commutator wears a predetermined amount or more in contact with the brush and the other end is connected to the logic circuit means is connected to the logic And a second conductor for outputting an input signal through a circuit means. The start failure detection device of the starting motor according to claim 4, wherein the second conductor is fixedly installed at a position corresponding to the center of the mica and the limit of wear of the commutator. The starter of claim 1, wherein the display means is a warning lamp installed at one side of the vehicle compartment and connected to the logic circuit means to light and inform the vehicle user of an abnormality of the starting motor according to a control signal thereof. Defect detection device.