JPH10157653A - Wheel alignment regulation method for vehicle and wheel alignment regulation device and spider curve deciding device used in the method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheel alignment regulation method for a vehicle wherein easy and reliable regulation is practicable and error decision hardly occurs to vehicles different in a kind of a vehicle and tire characteristics, and provide a wheel alignment regulation device and a spider curve deciding device, which are used in this method. SOLUTION: A vehicle wheel alignment regulation method is such that at each regulation process, from an ID card 3 attached to a vehicle 1, computing and processing correction is applied on measurements based on information, such as a kind of a vehicle and tire characteristics, and a result is compared with a reference value. Easy and reliable regulation of a tow angle and a steering wheel curve is applied on vehicles different in a kind of a vehicle and tire characteristics and erroneous decision of whether the regulation satisfies a reference is prevented from occurring. Especially, since decision is practicable based on objective data without depending upon the feeling and the knack of a worker, unevenness in regulation is prevented from occurring, and reliable wheel alignment regulation is pacticable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of adjusting a wheel alignment of a vehicle, which measures a toe angle and a steering wheel angle of a wheel and adjusts the angle as necessary in the manufacture of a vehicle such as an automobile. The present invention relates to a wheel alignment adjustment device and a spider bend determination device used for a vehicle.

[0002]

2. Description of the Related Art In general, in a final assembly line of a vehicle in the manufacture of a vehicle, the condition of wheels is inspected for ensuring the steering stability and running performance of the vehicle, and the wheel alignment of the vehicle is adjusted to be within a predetermined range. Is being done.

[0003] As a prior art of a conventional vehicle wheel alignment adjustment method, for example, Japanese Patent Application Laid-Open No. 7-17917 is known.
As disclosed in Japanese Patent Application Laid-Open No. 9, there is a method in which an operator judges and adjusts a measurement result based on various data prepared according to a vehicle type and tire characteristics.

[0004] This kind of vehicle wheel alignment adjustment method is, for example, as shown in FIG.
(A) and a wheel alignment adjusting step (b), and the toe angle is mainly adjusted in the wheel alignment adjusting step (b). In the wheel alignment adjusting step (b), the toe angle of the wheel is measured by the wheel alignment adjusting device 103.
The operator fixes the steering wheel with a jig, examines data such as the type and specification of the vehicle, and the type of tire. After adjusting and setting the toe angle tester 101 based on the data, the toe angle tester 101 determines the toe angle. Measure. Then, based on the measured result, the correction amount based on the above-described vehicle type and tire characteristics is selected from a data table in which data for each tire characteristic is recorded in advance, and the measured toe angle is corrected according to the correction amount described in the data table. The corrected value is compared with a reference value, and if the corrected value deviates from the reference value, the toe angle is corrected. After that, a recording sheet or the like describing the measured values and the correction amount is directly attached to the vehicle, and the vehicle is carried out to the next step.

[0005] In the next step, a spider turn determination step (c), the turn of the steering wheel with respect to the wheels is determined. In this step, the vehicle is driven straight ahead, and the operator visually checks the turn of the steering wheel in that state. Judgment is made, and a recording sheet or the like describing the judgment result is directly attached to the vehicle.

[0006] In the judging step (d), if the operator sees the respective descriptions displayed in the wheel alignment adjusting step and the spider bend judging step and satisfies the reference values, the process proceeds to the next inspection step, and adjustment is necessary again. The thing is returned to the wheel alignment adjustment process again.

[0007]

However, in the above-described conventional wheel alignment adjustment method for a vehicle,
For example, in the wheel alignment adjustment process, a worker looks at a data table of a vehicle type, a tire characteristic, and the like, adds a correction value corresponding to the vehicle, and then compares the correction value with a reference value. Is troublesome, and errors easily occur. In particular, since the operation of fixing the steering wheel at the time of measurement is a work based on the feelings and tips of the operator who has recognized the characteristics of the vehicle model and the characteristics of the tire, the operation requires skill and there is variation among the operators. In addition, there has been no measurement in which the dynamic characteristics of the tire itself and the vehicle, such as connectivity and plysteer, are finely folded.

Also, in the spider bend determination step, the measurement of the steering wheel angle is performed by visual observation, which requires skill and has the disadvantage that erroneous determination is likely to occur.

Accordingly, an object of the present invention is to provide a vehicle which can easily and surely make adjustments to vehicles having different types of tires and tire characteristics, and which can achieve high-quality wheel alignment adjustment in which erroneous determination is avoided. It is an object of the present invention to provide a wheel alignment adjusting method, a wheel alignment adjusting device used for the method, and a spider bending determining device.

[0010]

According to the present invention, there is provided a method for adjusting a vehicle, comprising the steps of: attaching an ID card capable of reading and writing predetermined information to a target vehicle; And an information writing step of writing vehicle information relating to tire adjustment, and a wheel alignment adjusting device measures the toe angle of the wheel, reads the vehicle information of the ID card, and corrects the toe angle measurement value based on the read vehicle information. Then, the corrected value is compared with a predetermined reference value, and a wheel alignment adjustment step of writing the comparison result to the ID card, and the spider bend determination device measures the steering wheel bend and writes the steering wheel bend to the ID card. Information that has been read, and the steering wheel Change the Rino determination reference value, by comparing the measured values and their changes value, the ID of the determination result together with measurements to determine whether it is within range of the determination reference value
A step of determining a spider bend to be written on the card;
An information output step of outputting and displaying information of each measurement result written in the D card and a reference of each measurement item is provided.

According to the present invention, the I mounted on the vehicle
Based on the information obtained from the D card, such as the type of vehicle and tire characteristics, the measured values are corrected and processed and compared with the reference values. Therefore, vehicles with different types and tire characteristics can be easily and reliably applied. In addition, the toe angle and the steering wheel bend can be adjusted, and the determination as to whether or not the standard is satisfied can be made surely.

In particular, by writing these measured values, adjustment amounts, and the like on an ID card in each step, comprehensive judgment can be made, and whether or not final adjustment is necessary can be easily made. Determination can be made, so that a determination error can be avoided. In addition, by comprehensively judging each measurement result in the wheel alignment adjustment process and the spider bend determination process, etc., if necessary, return to the wheel alignment adjustment process and adjust the vehicle to obtain a more reliable wheel alignment adjustment. It is possible to reliably prevent erroneous determination.

According to the present invention, there is provided a wheel alignment adjusting device for measuring a steering wheel angle, a reading means for reading information of each vehicle from an ID card attached to the vehicle, and a wheel moving straight. Measuring means for measuring the toe angle of the wheel when in the state, correcting means for correcting the measured value based on the read information from the reading means, and comparing means for comparing the corrected value with a reference value. Since the wheel alignment adjustment device corrects the measured toe angle based on the type and characteristics of the tire written on the ID card and compares the corrected value with a reference value, Easy and reliable determination of whether the toe angle satisfies the standard for vehicles with different vehicle types and tire characteristics

[0014] Further, the spider bend judging device according to the present invention is a steering wheel goniometer attached to a steering wheel of a vehicle for measuring an angle of the steering wheel, and reads information for each vehicle from an ID card attached to the vehicle. Means, changing means for changing a reference value for determining a steering wheel angle based on the vehicle information read by the information reading means, comparing means for comparing the changed value with a measured value, and comparing the comparison result with the I value.
Writing means for writing to the D card,
The spider bend determination device corrects the bend angle measured based on the type and characteristics of the tire written on the ID card and compares the corrected value with a reference value to thereby determine the type and characteristics of the tire and the vehicle. It is possible to easily and reliably determine whether or not the vehicle satisfies the criteria for vehicles having different characteristics. In particular, the result of such comparison is I
Since the data is written on the D card, it is possible to make a comprehensive judgment in comparison with other measurement information and contribute to mutual use with other measurement information.

[0015]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a schematic flow chart illustrating a method of adjusting a wheel alignment of a vehicle according to an embodiment of the present invention for each process.

This method of adjusting the wheel alignment of a vehicle includes an ID card attaching step (A), an information writing step (B) for writing necessary vehicle information on the ID card, and a toe angle mainly measured and adjusted by a wheel alignment adjusting device. A wheel alignment adjustment step (C), a spider bend determination step (D) for measuring a steering wheel bend with respect to a wheel, an information output step (E) for outputting information of each measurement result from an ID card and displaying the measurement result, And a vehicle determination step (F) for performing adjustment based on the displayed information and returning to the above-described step if necessary.

Hereinafter, each step will be described.

In the ID card attaching step (A), after the assembly of the vehicle is completed, the ID card 3 is set on the body of the carried vehicle 1, for example, a room mirror. This I
The D card 3 includes a semiconductor chip and a magnetically coated information medium, and can read and write or erase predetermined information.

In the information writing step (B), the vehicle type and the type and characteristics of the tire, for example,
Information such as the value of plysteer and conicity, the setting angle error of the steering wheel based on the actually measured value, and the dynamic characteristics of the suspension of the vehicle on the actual road are written. In this information writing step (B), the writing device 5
Is written in the ID card 3 in a non-contact state via the. The writing device 5 is connected to a central control device (not shown), and is adapted to sequentially send and input information on the vehicle type and the tires being used.

The arrangement of the information writing step (B) is not limited to after the ID card attaching step (A) but may be arranged before the ID card attaching step (A). In this case,
The ID card 3 in which the predetermined information is written in advance is attached to the transported vehicle 1.

In the wheel alignment adjusting step (C), as shown in FIG. 2, the toe angle is mainly measured by the wheel alignment adjusting device 9, and adjustment is made when the toe angle deviates from a preset reference value. Each reference value is set in detail for each vehicle type and each tire characteristic. In addition, the measured values may vary depending on the mounting error at the time of manufacture of the vehicle and the deterioration of the bush and the damper due to the secular change, and the torsion of the vehicle body. Things.

The wheel alignment adjusting device 9 is shown in FIG.
As shown in the figure, an adjusting device provided in the supporting device 13, for example, the toe angle tester 15, the steering wheel goniometer 1
7, the control device 11, a CRT display 19, an antenna 21 for reading and writing information on the ID card 3, and an ID system 23 for giving read / write information to the antenna 21.

The steering wheel goniometer 17 measures the spider bend, that is, the bend angle of the steering wheel 25 with respect to the wheel. The measured value is sent to the control device 11 as a measurement signal. ID system 2
In step 3, the information read from the ID card 3 via the antenna 21 is sent to the control device 11, and the information received by the correction means 28 of the control device 11 is corrected based on the vehicle type, tire characteristics, and the like. Compare with a predetermined reference value. Note that the CRT display 19 sequentially displays the measured values, the measurement results, and the like.

This wheel alignment adjusting step (C)
Will be described with reference to FIGS. 2 and 3.

First, when the vehicle 1 is carried in, the worker
In step S1, the steering wheel 25 of the vehicle is fixed by a steering wheel fixing jig (not shown), and then the steering wheel angle meter 17 is set on the steering wheel 25 in step S2.

On the other hand, in parallel with these operations, the ID system 23 reads necessary information such as the vehicle type and tire characteristics of the conveyed vehicle 1 from the ID card 3 via the antenna 21 in step T1. The read information is sent to the control device 11. The control device 11 switches the toe angle tester 15 to a specification corresponding to the information based on the information sent in step U1. Then, step S3
By turning on the switch of the toe angle tester 15, the step U
2. Start the measurement. The measured value is ID by the correction means 28
A correction based on the information of the card 3 is made, and the comparing means 30
, And the control device 11 displays the result on the CRT display 19 together with the reference value.

Next, the operator adjusts the rear toe angle based on the comparison data between the corrected value and the reference value displayed in step S4, and when the adjustment is completed in step S5, the operator then adjusts the front toe angle. Move on.

In the adjustment of the front toe angle, step S5
Input of the adjustment completion switch in the control device 11
Switches the CRT display 19 to the front adjustment screen in step U3. Then, similarly to the rear toe angle, the correction value and the reference value are displayed on the CRT display 19, and based on the display, the front toe angle is adjusted in step S6, and when the adjustment is completed, the adjustment completion switch is input in step S7.

In response, the ID system 23 writes the toe angle adjustment data on the ID card 3 in step T2, and the control device 11 returns the totester 15 to its original position in step U4. Thereby, the toe angle adjustment is completed, and the operator carries out the vehicle to the next spider bend determination step (D).

In the spider bend determination step (D), the steering wheel bend is determined by the spider bend determination device 26, and the condition of the wheel, that is, whether or not the vehicle can go straight at a steering wheel turning angle of zero on a real road, is determined. Determine the steering wheel bend.

As shown in FIG. 4, the spider bend judging device 26 includes a free roller 32 for driving the vehicle by itself, a steering wheel angle meter 37, a control device 29, a display 31, an antenna 33 for reading and writing information on an ID card, and an antenna. And an ID system 35 for giving read / write information to the ID 33. The steering wheel angle meter 37 is set on the steering wheel 25, the control device 29 receives the measurement information of the steering wheel angle meter 37, the changing means 34 changes the determination reference value, and the comparing means 36 determines the changed value. The reference value and the measured value are compared to calculate a steering wheel bending angle, which is displayed on the display 31 and transmitted to the ID system 35. In the ID system 35, I
The information read from the D card 33 is sent to the control device 29, and the determination result in the control device 29 is written in the ID card 3.

The operation in the spider bend determination step (D) will be described with reference to FIGS.

First, when the vehicle is loaded and mounted on the free roller 32, the operator moves the steering wheel angle meter 37 to the steering wheel 25 of the vehicle in step S11.
Is set.

In parallel with this operation, in the ID system 35, the ID card 3 attached to the vehicle in step T11
, The required information such as the vehicle type, the measured toe angle, and the tire characteristics described above is read via the antenna 33, and the read information is sent to the control device 29. In step 11, the condition of the free roller 32 is switched according to the type of vehicle and the like based on the transmitted information.
Then, the data read from the ID card 3 is input, and in step 12, the change unit 34 changes the determination reference value based on the data.

The operator turns on the driving test switch in step S12 and drives the vehicle in step S13.

On the other hand, in the free roller 32, step F
The test is started at step 12 and the control device 29 executes step P
At 13, the measurement results from the steering wheel goniometer 37 are sequentially input, and the comparing means 36 performs a calculation by comparing the result with the changed determination reference value. As a result, for example, the steering wheel bending angle with respect to the determination reference value is calculated. Is calculated, and the result is used as a judgment record.

In the free roller 32, the judgment record is displayed on the display in step F13. At the same time, the spider bend judging device 29 sends the judgment record information to the ID system.
The judgment record information is written on the card 3. Thus, the operator ends the test in step S14.

The free roller 32 returns the tester to the original position in step F14, and the operator carries out the vehicle to the information output step (E) in step S15.

In the information output step (E), as shown in FIG. 1, the ID system 35 reads information on each measurement result from the ID card 3 attached to the vehicle, and outputs the information to the output device 41.
Prints out the measurement results on recording paper. The recording paper on which the measurement result is recorded is put on a vehicle, and the vehicle is sent to the next vehicle determination step (F).

In the vehicle judging step (F), as shown in FIG. 1, the operator looks at the measurement result of the print information of the recording paper stretched on the vehicle and the comparison result with the reference value, and if necessary, checks the result. Returns the vehicle to the wheel alignment adjustment process (C) and adjusts it again. If not necessary, the vehicle is sent to the next inspection process (G), and after all inspections are completed, the product is shipped. For vehicles that do not require readjustment, the ID card 3 is collected, and the collected ID card 3 is returned to the ID card attaching step (A).

According to the present embodiment, information on a wide variety of vehicle types and tire characteristics is written to the ID card 3, and is read and subjected to various measurements and adjustments. Comparison can be performed, and erroneous determination can be prevented.

In particular, since the judgment can be made based on the objective data without depending on the feeling and the knack based on the visual observation of the operator, the adjustment can be performed without any variation in the adjustment.

The present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention.

For example, in the information output step (E), a display is installed in the vehicle determination step (F) without being limited to printing out the measurement results and the determination results on recording paper, and each of the vehicles carried into this display is displayed. May be displayed.

[0046]

According to the vehicle wheel alignment adjusting method of the present invention described above, in the vehicle adjusting process, the measured value is obtained from the ID card attached to the vehicle based on the information such as the type of the vehicle and the tire characteristics. Since it is calculated and corrected and compared with the reference value, it is possible to easily and surely adjust the toe angle and steering wheel bending for vehicles with different types and tire characteristics, and furthermore, erroneous judgment by human Since the determination can be made based on objective data without relying on the feelings and tips based on the visual observation of the operator, there is no variation in the adjustment, and the adjustment can be reliably performed, and a high-quality wheel alignment adjustment can be obtained.

In addition, by writing these measured values, adjustment amounts, and the like to the ID card in each step, comprehensive judgment is facilitated and objective judgment can be made, so that judgment errors can be avoided, and each measurement result can be avoided. And the reference value comprehensively,
Since the vehicle is adjusted again when necessary, more reliable adjustment can be achieved.

According to the wheel alignment adjusting device of the present invention, the toe angle measured based on the type of vehicle and the characteristics of the tire written on the ID card is corrected, and the corrected value is compared with a reference value. Therefore, it is possible to easily and reliably determine whether or not the toe angle satisfies the criterion for vehicles having different types and tire characteristics, thereby avoiding erroneous determination.

Further, the spider bend determining apparatus according to the present invention changes the determination reference bend angle based on the type of vehicle and tire characteristics written on the ID card and compares the changed value with the measured value. It is possible to easily and reliably determine whether or not the vehicle satisfies the criteria for vehicles having different types and tire characteristics.

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of a vehicle wheel alignment adjustment method according to an embodiment of the present invention.

FIG. 2 is a side view showing a schematic configuration of a wheel alignment adjusting device.

FIG. 3 is a flowchart of a wheel alignment adjustment step.

FIG. 4 is a side view showing a schematic configuration of a spider bend determination device.

FIG. 5 is a flowchart of a spider bend determination process.

FIG. 6 is a diagram showing an outline of a conventional vehicle adjustment method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle 3 ID card 5 Writing device 9 Wheel alignment adjusting device 11 Control device 17, 37 Handle angle meter 23, 35 ID system 26 Spider bending judgment device 28 Correcting device 29 Control device 34 Changing device 30, 36 Comparison device 41 Output device A ID card mounting process B Information writing process C Wheel alignment adjustment process D Spider bending judgment process E Information output process F Vehicle judgment process

Claims (3)

[Claims] 1. An ID card attaching step of attaching an ID card capable of reading and writing predetermined information to a target vehicle, an information writing step of writing vehicle information relating to vehicle and tire adjustment to the ID card, and a wheel alignment adjusting device. Measures the toe angle of the wheel, reads the vehicle information of the ID card, corrects the toe angle measurement value based on the read vehicle information, compares the corrected value with a predetermined reference value, and compares A wheel alignment adjustment step of writing the result to the ID card; a spider bend determination device measures the steering wheel bend, reads information written on the ID card, and determines a steering wheel bend determination criterion based on the read information. Change the value, compare the changed value with the measured value, and Determining whether the value is within the range of the determination reference value and writing the determination result to the ID card; a spider bending determination step; information of each measurement result written to the ID card; And a data output step of outputting and displaying the value. 2. A steering wheel goniometer for measuring an angle of a steering wheel, and an I-type device mounted on a vehicle.
Reading means for reading information for each vehicle from the D card, measuring means for measuring the toe angle of the wheel when the wheel is in a straight traveling state, and correcting means for correcting the measured value based on the read information from the reading means And a comparing means for comparing the corrected value with a reference value. 3. A steering wheel goniometer installed on a steering wheel of a vehicle to measure an angle of the steering wheel, reading means for reading information for each vehicle from an ID card attached to the vehicle, and reading the information by the information reading means. Changing means for changing the reference value of the steering wheel angle based on the vehicle information; comparing means for comparing the changed value with a measured value; and writing means for writing the comparison result to the ID card. A spider bending judgment device characterized by the above-mentioned.