KR20160064674A - Inhibitor switch - Google Patents

Abstract

The present invention comprises: an angle sensing unit outputting a voltage corresponding to a rotational angle of a central shaft which enables a rotary lever to be rotated; and a code detection unit detecting a code corresponding to the voltage sensed by the angle sensing unit to be inputted to an electronic control device. The purpose of the present invention is to provide the inhibitor switch, removing a contact failure of the contact type inhibitor switch.

Description

INHIBITOR SWITCH < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an inhibitor switch, and more particularly, to an inhibitor switch in which contact failure of a contact inhibitor switch is prevented by applying a contact inhibitor operating method to a non-contact type heater bur switch.

Generally, the inhibitor switch is a switch that detects the gear position of the shift lever when the driver operates the shift lever and transmits the shift signal to an electronic control unit (TCU).

The inhibitor switch prevents the engine from starting when the position of the shift lever is other than N range and P range, and when the position of the shift lever is R range, the backup lamp is turned on.

These inhibitor switches are classified into contact type and non-contact type.

When the driver operates the shift lever, the contact inhibitor switch rotates the M-contactor by the shift cable. At this time, the (+) and (-) poles of the terminal are connected so that the electronic control unit 30 recognizes the PRND range do.

In the non-contact type inhibitor switch, when the driver operates the shift lever, the hole sensor rotates by the shift cable to generate the voltage value according to the angle change. The electronic control device uses the voltage value inputted from the hall sensor to set the PRND range .

On the other hand, in the contact type inhibitor switch, the internal M-contactor rotates and the contact failure occurs with the terminal, and it is necessary to change the contact type inhibitor switch to the non-contact type inhibitor switch.

However, in order to change the contact type inhibitor switch to the non-contact type inhibitor switch, it is necessary to change the hardware and software of the connector, the vehicle harness, and the electronic control device. However, the contact type inhibitor switch is not compatible with the non- .

The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2007-0052410 (May 22, 2007).

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a non-contact type heater burr switch which is capable of coping with contact failure of a contact type inhibitor switch, Switch.

Another object of the present invention is to provide an inhibitor switch that can achieve the same effect as a contactless inhibitor switch without changing the apparatus or module used in a conventional contact inhibitor switch such as an electronic control device.

It is still another object of the present invention to provide an inhibitor switch capable of detecting harness disconnection and short-circuit, failure of an inhibitor switch, and the like by a self-diagnosis function.

An inhibitor switch according to an aspect of the present invention includes an angle sensing unit for outputting a voltage corresponding to a rotation angle of a central axis for rotating a rotation lever; And a code detecting unit for detecting a code corresponding to the voltage sensed by the angle sensing unit and inputting the code to the electronic control unit.

In the present invention, the angle sensing unit may include a magnet unit; And a Hall sensor for outputting a voltage according to a magnetic field which is changed when the magnet unit rotates.

In the present invention, the magnet portion is installed on the central axis and rotates integrally with the central axis.

In the present invention, the magnet portion is provided on the rotation lever and rotates integrally with the rotation lever.

The present invention further includes a starter switching unit that is switched according to the voltage input from the angle sensing unit and outputs a P signal or an N signal, which is a position signal of the shift lever, to the engine control unit.

The present invention further includes an R-range switching unit for controlling the R-stage lamp according to the voltage input from the angle sensing unit.

In the present invention, a self diagnosis unit for detecting a failure or a disconnection or a short circuit of the harness through a voltage input from the angle sensing unit, a voltage corresponding to each range of the shift lever, and a contact signal applied to the electronic control unit And further comprising:

The present invention improves the compatibility between the contact type inhibitor switch and the non-contact type inhibitor switch by applying the operation method of the contact type inhibitor switch to the non-contact type inhibitor, and copes with the contact failure of the non-contact type inhibitor switch.

The present invention makes it possible to obtain the same effect as the non-contact type inhibitor switch without changing the apparatus or module used in the conventional contact inhibitor switch such as an electronic control device.

The present invention detects harness disconnection and short-circuit and failure of an inhibitor switch by a self-diagnosis function.

1 is a block diagram of an inhibitor switch according to an embodiment of the present invention.
2 is a structural diagram of an angle sensing unit according to an embodiment of the present invention.
3 is a view illustrating rotation of a pivotal lever of an inhibitor switch according to an embodiment of the present invention.
4 is a diagram illustrating a code corresponding to a voltage value of the angle sensing unit according to an embodiment of the present invention.

Hereinafter, an inhibitor switch according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. Further, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the user, the intention or custom of the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a block diagram of an inhibitor switch according to an embodiment of the present invention, FIG. 2 is a structural view of an angle sensing unit according to an embodiment of the present invention, FIG. 3 is a view illustrating an angle sensor according to an embodiment of the present invention, FIG. 4 is a diagram illustrating a code corresponding to a voltage value of the angle sensing unit according to an embodiment of the present invention. Referring to FIG.

The inhibitor switch 20 according to an embodiment of the present invention controls a running condition of the vehicle (forward, backward, start, R-stage lamp) and the like, and is provided with a shift lever (not shown) and a shift cable And outputs a code corresponding to one of P / R / N / D / 2 / L ranges according to the position of the shift lever. The inhibitor switch 20 allows the engine to be started only when the shift lever is positioned at the P range or the N range.

The inhibitor switch 20 is connected to the output terminal (+ end) of the battery 10 and receives power from the battery 10. An ignition key (not shown) (Not shown) is selected, the voltage of the battery 10 is supplied to the starter motor or the like through the selected contact point.

Referring to FIG. 1, an inhibitor switch 20 according to an embodiment of the present invention includes an angle sensing unit 21, a starter switching unit 22, an R range switching unit 23, a code detecting unit 24, And a diagnosis unit 25.

The angle sensing unit 21 outputs a voltage corresponding to the rotation angle of the center shaft 26 that rotates the rotation lever 27.

The angle sensing unit 21 includes a magnet unit 211 and a Hall sensor as shown in FIG.

Here, the pivoting lever 27 is rotated as shown by the arrow in Fig. 3 by a shift cable which is moved by the operation of the shift lever about the center shaft 26. [

That is, the pivoting lever 27 is rotated by the shift cable about its center axis 26 as indicated by an arrow. The magnet portion 211 is provided on the center axis 26 and is integrally formed with the center axis 26 Or rotates integrally with the pivoting lever 27 by being mounted on the pivoting lever 27.

The mounting position and the structure of the magnet portion 211 are the same as those of the pivotal lever 27 or the center of the pivotal lever 27. However, So long as the magnetic field can be changed by the rotation of the shaft 26.

The magnet portion 211 is the movement of the center shaft 26 or the tilting lever 27 as described above, and the magnetic field is changed by this movement. The hall sensor 212 outputs a voltage corresponding to the magnetic field which is changed by the movement of the magnet 211.

That is, as shown in FIG. 2, the hall sensor 212 is installed at a position adjacent to the magnet part 211 and outputs a voltage according to a magnetic field changed by the movement of the magnet part 211. In this case, the voltage can be varied in various sizes according to the magnetic field, and is outputted in a size corresponding to each of the P range, R range, N range, D range, and the like.

The starter switching part 22 is switched according to the voltage inputted from the angle sensing part 21 and outputs a P signal or N signal which is a position signal of the shift lever. In this case, the engine control unit prevents the vehicle engine from starting when the P signal or the N signal is input from the starter switch.

The starter switching unit 22 includes a P-range switching unit 221 that is switched by a voltage input from the angle sensing unit 21 and outputs a P signal, and an N-range switching unit 222 that outputs an N signal do. Accordingly, when the shift lever is positioned in the P range, the angle sensing unit 21 outputs a voltage corresponding to the P range. At this time, the P range switching unit 221 is turned on by the voltage corresponding to the P range, And outputs a signal. When the shift lever is positioned in the N range, the angle sensing unit 22 outputs a voltage corresponding to the N range. At this time, the N range switching unit 222 is turned on by the voltage corresponding to the N range, And outputs a signal.

The R-range switching unit 23 is switched by the voltage input from the angle sensing unit 21 and outputs an R signal. Accordingly, when the shift lever is positioned in the R range, the angle sensing unit 21 outputs a voltage corresponding to the R range, and at this time, the R range switching unit 23 is turned on by the voltage corresponding to the R range, And outputs a signal. As a result, the R-stage lamp is turned on only when the shift lever is located in the R-range.

The code output unit 24 transmits a code corresponding to the voltage input from the angle sensing unit 21 to the electronic control unit 30, as shown in FIG. The electronic control unit 30 and the cord output unit 24 are connected to each other by a wire harness, and the cord is transmitted to the electronic control unit 30 via the wire harness via the corresponding contact. Here, the code embodies the output of the heavier switch 20 as a plurality of signal outputs, and the range of the shift lever can be recognized through such code combination. S1, S2, S3, S4, and S5 are output as 1 or 0 according to the range (P, PR, R, RN, V, ND, D) of the shift lever. The range of the shift lever is recognized. On the other hand, the code can be set the same as the code of the contact inhibitor switch.

The self-diagnosis unit 25 receives the voltage input from the angle sensing unit 21, a voltage corresponding to each range of the shift lever, and a contact signal applied through the contact to the electronic control unit 30, The failure of the harness 20 or the disconnection or short-circuit of the harness is detected.

That is, the self-diagnosis unit 25 determines whether a voltage is input from the angle sensing unit 21, a magnitude of the voltage input from the angle sensing unit 21, a voltage input from the angle sensing unit 21, Whether or not the inhibitor switch 20 is faulty, whether the harness is disconnected or short-circuited, or the like, through the presence or absence of a match, and whether or not the contact of the wire harness is abnormal.

The electronic control unit 30 combines the codes inputted from the code output unit 24 and controls the driving of the vehicle according to the codes.

As described above, this embodiment improves the compatibility between the contact type inhibitor switch and the non-contact type inhibitor switch by applying the operation method of the contact type inhibitor switch to the non-contact type inhibitor, and copes with the contact failure of the non-contact type inhibitor switch .

In addition, the present embodiment makes it possible to obtain the same effect as the non-contact type inhibitor switch without changing the apparatus or module used in the conventional contact inhibitor switch such as the electronic control device.

In addition, the present embodiment detects a harness disconnection and short-circuit and a breakdown of an inhibitor switch by a self-diagnosis function.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Accordingly, the true scope of the present invention should be determined by the following claims.

10: Battery
20: inhibitor switch
21: Angle sensing unit
211: magnet portion
212: hall sensor
22: Starter switching unit
221: P range switch
222: N range switching section
23: R range switching section
24: code output section
25: Self Diagnosis Department
26: center axis
27: Rotary lever
30: Electronic control device

Claims (7)

An angle sensing unit for outputting a voltage corresponding to a rotation angle of the center shaft for rotating the rotation lever; And
And a code detector for detecting a code corresponding to the voltage sensed by the angle sensing unit and inputting the code to the electronic control unit.
The apparatus of claim 1, wherein the angle sensing unit
A magnet portion; And
And a hall sensor for outputting a voltage in accordance with a magnetic field which is changed when the magnet unit rotates.
The inhibitor switch according to claim 2, wherein the magnet portion is installed on the central axis and rotates integrally with the central axis.
3. The inhibitor switch according to claim 2, wherein the magnet portion is provided on the pivotal lever and rotates integrally with the pivotal lever.
The inhibitor switch according to claim 1, further comprising a starter switching unit that switches according to a voltage input from the angle sensing unit and outputs a P signal or an N signal, which is a position signal of the shift lever, to an engine control unit.
The inhibitor switch according to claim 1, further comprising an R-range switch for switching an R-stage lamp according to a voltage input from the angle sensing unit.
The electronic control apparatus according to claim 1, further comprising: a sensor for detecting a failure or a disconnection or short circuit of the harness through a voltage input from the angle sensing unit, a voltage corresponding to each range of the shift lever, Further comprising a diagnosing section.

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