KR20110055849A - Apparatus for detecting steering torque and steering angle of vehicle - Google Patents

Abstract

PURPOSE: An apparatus for detecting the steering torque and steering angle of a vehicle is provided to measure the steering angle of a vehicle using a hall switch sensor and a magnet. CONSTITUTION: An apparatus for detecting the steering torque and steering angle of a vehicle comprises a case(10), a rotation signal output unit(50), a stator, a torque sensor(40), and a rotation signal detection unit(30). The rotation signal output unit is installed inside the case. The rotation signal output unit is coupled to an input shaft rotated by external force and is rotated with the input shaft. The stator is installed inside the case. The stator is coupled to an output shaft connected to the input shaft and is rotated with the output shaft. The torque sensor is installed inside the case and senses steering torque. The rotation signal detection unit is installed near the rotation signal output unit and outputs a rotation index signal depending on the rotation of the rotation signal output unit.

Description

Steering Torque and Steering Angle Detection System for Vehicles {APPARATUS FOR DETECTING STEERING TORQUE AND STEERING ANGLE OF VEHICLE}

The present invention relates to a steering torque and steering angle detection device of a vehicle.

The vehicle power steering system is a system that provides an auxiliary operation force to operate the steering wheel when the frictional force applied to the front wheel, which is the steering wheel, is large and the operation force for steering the steering wheel is large.

Since the steering degree of the running vehicle is utilized as data for controlling the vehicle, the steering degree of the vehicle is detected by measuring the steering torque and the steering angle of the steering shaft.

The steering angle measuring device (module) includes a steering angle sensor, and the angle sensor measures the steering degree of the steering wheel required for controlling the vehicle in driving.

The torque measuring device (module) is also equipped with a torque sensor, which measures the torque applied to the torsion bar to smoothly operate the steering wheel. The angle sensor and the torque sensor as described above is modularized together with other components in the angle torque sensor assembly, that is composed of an angle sensor module and a torque sensor module.

Conventionally, in order to detect a steering torque and a steering angle of a vehicle, a torque sensor and an angle sensor for detecting the steering torque and the steering angle are installed and used, respectively. Therefore, there is a problem that the number of parts increases, the installation process is complicated, and the cost increases. In particular, in the case of the angle sensor, the cost is expensive, there is a disadvantage that the installation is difficult.

The present invention has been made to solve the above problems, an object of the present invention is to provide a steering torque and steering angle detection device of a vehicle that can reduce the cost.

Steering torque and steering angle detection device of the vehicle of the present invention to achieve the above object is a rotation signal output that is rotated in the same manner as the input shaft coupled to the input shaft is installed inside the case, and rotated by an external force And a stator installed inside the case and coupled to the output shaft connected to the input shaft using a torsion bar as a medium, the stator rotating the same as the output shaft, and a torque sensor installed inside the case to detect steering torque. And a rotation signal detector installed near the rotation signal output unit and outputting a rotation index signal according to the rotation of the rotation signal output unit.

In addition, in the steering torque and steering angle detection device of the vehicle of the present invention, the rotation signal output unit is a cylindrical unit of a non-magnetic rotating unit and a magnet inserted into the outer surface of the rotating unit.

In addition, in the steering torque and steering angle detection device of the vehicle of the present invention, the rotation signal detection unit is a Hall switch sensor that generates and outputs a signal when the magnet of the rotation signal output unit is close.

In the steering torque and steering angle detection apparatus of the vehicle of the present invention, the hall switch is electrically connected to a printed circuit board on which the torque sensor is installed.

In addition, in the steering torque and steering angle detection device of the vehicle of the present invention, the magnet is inserted into a certain portion of the outer surface of the rotary unit, and the Hall switch sensor is a signal every 360 ° rotation of the magnet by the rotation of the rotary unit Output

The steering torque and steering angle sensing device of the vehicle of the present invention as described above includes a Hall switch sensor for measuring the steering angle and a magnet that rotates during the steering of the magnet, to measure the steering angle of the vehicle. . Therefore, since the number of parts is reduced and assembly is easy, the process is simplified and the cost is reduced.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the second component may be referred to as the first component, and similarly, the first component may also be referred to as the second component.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprises" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Now, a steering torque and a steering angle sensing device of a vehicle according to an exemplary embodiment of the present invention will be described in detail with reference to the drawings. May be omitted.

1 is a perspective view for explaining a steering torque and steering angle detection device according to an embodiment of the present invention, Figure 2 is a simplified view for explaining a steering angle detection device according to the present embodiment, Figure 3 is shown in Figure 1 4 is a cross-sectional view of a steering torque and steering angle sensing device, and FIG. 4 is a diagram for describing an operation of a hall switch sensor according to an exemplary embodiment.

As shown in FIG. 1 and FIG. 3, a case 10 having an upper case 11 and a lower case 13 is provided. An existing torque sensor module 20 is installed inside the case 10. The torque sensor module 20 will be briefly described as follows.

A stator (not shown in the drawing) is installed, and a torque ring magnet (not shown in the drawing) in a cylindrical ring shape is inserted and coupled to the inside of the stator. The magnet is coupled to an input shaft (not shown) connected to a steering wheel and rotates in the same manner as the input shaft. The stator (not shown) is coupled to an output shaft (not shown) connected to the input shaft with a torsion bar as a medium and rotates in the same manner as the output shaft. The output shaft is connected to the front wheel side, which is a steering wheel. Since the input shaft and the output shaft are connected by the torsion bar, and the output shaft is connected to the front wheel side in contact with the road surface, the rotation angles of the input shaft and the output shaft are different when the steering wheel is rotated by an external force. Therefore, the rotation angles of the magnet and the stator are also different.

In addition, a collector and a torque sensor 60 are fixed inside the case 10. The collector is integrally formed in the holder and installed adjacent to the stator, and the torque sensor 60 is installed adjacent to the collector. Thus, the collector concentrates the magnetic field formed between the stator and the magnet, and the torque sensor 40 senses the magnetic field concentrated in the collector 31. The torque sensor 40 is fixed to the printed circuit board 60.

The lower portion of the torque sensor module 20 as described above, the rotation signal output unit 50 for outputting the index detection signal for the steering angle and the rotation for outputting the rotation index signal according to the rotation of the rotation signal output unit 50 The signal detector 30 is installed.

The rotation signal output unit 50 is coupled to the input shaft rotated by the user's steering force and is installed to rotate in the same manner as the input shaft. The rotation unit 51 is formed of a non-magnetic cylinder in a cylindrical shape, and the rotation unit 51 It includes a magnet 52 inserted into the outer surface of the).

The rotation signal detector 30 includes a conventional hall sensor 30 and a hall switch element.

As shown in the simplified diagram shown in FIG. 2, the rotation signal output unit 50 and the rotation signal detection unit 30 as described above detect the signal by the hall sensor 30 by magnetism of the magnet 52. By outputting, the magnet 52 is also rotated by the rotation of the rotary unit 51 generates a signal as shown in Figure 4 every 360 ° rotation.

A typical torque sensor is output as a V / Deg [Voltage / Degree] value, which indicates the torsion angle of the torsion bar, and senses a voltage output proportional to the amount of angle. Therefore, by integrating the torsion angle caused by the driver's steering force, the total amount of the shifted angle can be inferred. In this case, the rotation signal output unit 50 and the rotation signal detection unit 30 outputs an index signal value every 360 ° rotation to the analogous angle information as described above, so that the absolute angle rotates more than 360 ° in the same direction. The calculation may be enabled or used to check the range of angles calculated. For example, when the output signal signal of the rotation signal detecting unit 30 is recorded in the clockwise direction, the steering angle range may be inferred to be in a 360 ° to 720 ° range.

One embodiment of the present invention described above should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

1 is a perspective view for explaining a steering torque and steering angle detection apparatus according to an embodiment of the present invention

2 is a simplified view for explaining a steering angle detection device according to the present embodiment

3 is a cross-sectional view of the steering torque and steering angle detection device shown in FIG.

4 is a view for explaining the operation of the Hall switch sensor according to the present embodiment;

Claims (5)

With the case, A rotation signal output unit installed inside the case and coupled to an input shaft that is rotated by an external force and rotated in the same manner as the input shaft; A stator installed inside the case and coupled to an output shaft connected to the input shaft using a torsion bar as a medium, the stator rotating the same as the output shaft; A torque sensor installed inside the case to detect steering torque; Steering torque and steering angle detection device of the vehicle provided in the vicinity of the rotation signal output unit, including a rotation signal detection unit for outputting a rotation index signal in accordance with the rotation of the rotation signal output unit. The method of claim 1, The rotation signal output unit, Steering torque and steering angle detection device for a vehicle that is a cylindrical unit of a non-magnetic rotating unit and a magnet inserted into the outer surface of the rotating unit. The method of claim 2, And the rotation signal detecting unit is a hall switch sensor which generates and outputs a signal when the magnet of the rotation signal output unit is close. The method of claim 3, The hall switch, Steering torque and steering angle sensing device of the vehicle electrically connected to the printed circuit board having the torque sensor. The method according to claim 2 or 3, The magnet is inserted into a predetermined portion of the outer surface of the rotating unit, The Hall switch sensor is a steering torque and steering angle detection device of the vehicle for outputting a signal every 360 ° rotation of the magnet by the rotation of the rotating unit.

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