JP2001356079A - Composite automobile inspection apparatus having toe angle and camber angle measuring instrument incorporated therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite automobile inspection apparatus capable of simply measuring the stress, toe angle and camber angle of a rear wheel on the basis of the arbitrary selection of a user as a legal automobile inspection in addition to the inspection of a car speed meter and a brake. SOLUTION: A toe angle and camber angle measuring instrument is provided to an automobile inspection apparatus having a roller type side slip tester, a speed meter tester and a brake tester.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a vehicle inspection device,
More particularly, the present invention relates to a combined vehicle inspection device having means for measuring a toe angle and a camber angle of a rear wheel.

[0002]

2. Description of the Related Art Conventionally, a hybrid vehicle inspection device of this kind (hereinafter referred to as "inspection device").
Inspection device. ) Has a front wheel mounting portion and a rear wheel mounting portion, is configured to mount an inspection vehicle to be inspected, and has a speedometer tester portion and a brake tester portion provided in the vehicle inspection device. Perform a general inspection. The brake tester unit includes a pair of brake rollers, a motor for driving the pair of brake rollers, and a brake roller that is lifted from below to bring the brake roller into contact with a running surface of a wheel to be inspected. And a braking force detector for detecting the resistance of the brake roller as a braking force. The brake roller when the vehicle brake is operated while driving the drive motor and driving the brake roller. Is detected as a braking force. on the other hand,
The speedometer tester includes: a rotational driving force of a wheel rotationally driven by an engine of the inspection vehicle; or a speedometer roller rotationally driven by a motor provided in a vehicle inspection device; and a detection device for detecting a rotational speed of the speedometer roller. It is configured to inspect whether the vehicle speed meter is appropriate for the inspection vehicle speed based on the difference between the detection value of the vehicle speedometer mounted on the vehicle and the detection value of the detection device.

Further, a side slip tester provided in accordance with the general inspection means slides in the axial direction of the wheel corresponding to the lateral force generated in the axial direction as the wheel of the inspection vehicle rotates. In a composite type vehicle inspection device having a roller type side slip tester capable of measuring the lateral force by a sliding amount of a movable side slip test drum, a vehicle side slip amount, that is, a lateral force when passing through a specified distance is measured. ,
Except for the wheels whose lateral force is to be measured, the simulation can be performed by a stationary vehicle. The composite type vehicle inspection device provided with the roller type side slip tester is a patent published in Japanese Patent Publication No. 4-23207 and filed by the present applicant.
Further, as a similar example, “Patent No. 29161403” has obtained a patent.

[0004]

As described above, the conventional vehicle inspection device is generally configured so that the speedometer and the brake can be inspected by the speedometer tester and the brake tester. is there. In order to ensure safe and comfortable driving, it was desired to inspect items other than the legal inspection items and to provide highly reliable information by the user's optional choice. In some cases, it was possible to measure the change in the lateral force of the vehicle body caused by the change. However, if the toe angle and the camber angle of the wheels are also detected during the vehicle inspection and maintenance, and the vehicle is maintained based on the inspection results, the reliability is improved and the safer driving is performed. A first object of the present invention is to provide a composite vehicle inspection device capable of detecting a change in lateral force of a vehicle body caused by traveling and a toe angle and a camber angle of a rear wheel in accordance with inspection of a vehicle speedometer and a brake. It is in.

A second object of the present invention is to reduce the bulk in the vehicle width direction caused by incorporating the toe angle and camber angle measuring devices into a conventional vehicle inspection device, thereby achieving space saving. The operation of the alignment tester board can be quickly switched between measurement and non-use by a short time operation, so that the work efficiency is not reduced, as compared with the case where the alignment tester board is moved forward and backward in the vehicle width direction only by the screw type adjuster. It is.

[0006] A third object of the present invention is to install only a single part without using a plurality of sliding scales made of precision parts,
It is an object of the present invention to configure a toe angle and camber angle measuring device, to reduce the number of parts, to make it easy to manufacture, and to cope with cost reduction.

A fourth object of the present invention is to cope with the measured values of the toe angle and the camber angle so that they can be read instantaneously and easily.

[0008]

According to a first aspect of the present invention, a driving force is applied by a mounting table on which an inspection vehicle is mounted and mounted, and a roller in contact with wheels of the inspection vehicle. And a brake tester for checking the braking force based on the rotational state of the wheels, and an error of an indicated value of a speedometer attached to the test vehicle with respect to a true rotational speed at which the wheels contribute to traveling. Speedometer tester section, and the amount of movement of a roller movable in the axial direction by a lateral force generated in the axial direction along with the rotation of the wheel for measuring the amount of sideslip of the vehicle when passing through a specified distance. In a compound vehicle inspection device having a roller-type side slip tester that can be detected and measured by a link mechanism, the vehicle is positioned so as to face a rear wheel of the inspection vehicle from outside the inspection vehicle, and has a toe angle and a camber. An alignment tester board that forms an angle measuring device, and a rotating shaft supported on the alignment tester board, the direction of the rotating axis matches the width direction of the inspection vehicle, and a tester reference line that is a straight line of a predetermined length when measuring the toe angle 9 so that the tester reference line coincides with the vertical direction when the camber angle is measured.
A rotating part that can be temporarily fixed by being rotated by 0 degrees, and a distance in a vehicle width direction from a first measurement point and a second measurement point at both ends of the tester reference line to a side surface of the rear wheel. A distance difference sensor for measuring a dimensional difference between the measured value of the second and the second measured value, and a slide provided such that the alignment tester board is movable in the vertical direction and the vehicle width direction and can be temporarily fixed at an arbitrary position. A bed mounting mechanism; and display means for displaying the inclination of the rear wheel with respect to the tester reference line based on the dimensional difference.

With this arrangement, the inspector can easily and inexpensively measure the toe angle and the camber angle of the rear wheel in a short time after the inspection of the vehicle speedometer and the brake, and additionally, add a dedicated mounting table for that purpose. No need to install,
Naturally, there is no need for a dedicated installation location, and there is no need to move the inspection vehicle.

[0010] In the invention according to claim 2, the distance difference sensor is arranged on the rotating part by a structure that can be freely expanded and contracted, and when used, stands up in the vehicle width direction and is temporarily fixed. At the time of use, the development is closed along the surface of the alignment tester board. By doing so, the inspector can measure the toe angle and the camber angle of the rear wheel in a short time of only about 2 to 3 minutes, that is, the vehicle speedometer and the conventional normal legal inspection. Since the distance difference sensor is not used while the inspection of the brake is performed by the same vehicle inspection device without moving the inspection vehicle, the deployment is closed along the surface of the alignment tester panel or along the longitudinal direction. be able to. Therefore, the bulk in the vehicle width direction can be reduced, and the inspection work can be performed efficiently even in a small space without disturbing the inspection work. In addition, switching between measurement and non-use can be performed quickly with a shorter operation than when the alignment tester board is moved forward and backward in the vehicle width direction using only the screw adjuster.

According to a third aspect of the present invention, as the distance difference sensor, a rod of a specified length forming a first contact at a tip thereof stands upright in the vehicle width direction from the first measurement point. ,
A sliding scale that obtains the second measurement value that slides along the vehicle width direction from the second measurement point is erected, and a second contact, which is the tip of the sliding scale, is located at the rear end. The dimensional difference is detected based on a point where the first contact comes into contact with the side surface of the ring and the first contact comes into contact with the side surface. By doing so, without using a plurality of slide lengths made of precision parts, it is installed only at a single location to configure a toe angle and camber angle measurement device, and has a small number of parts, a design that is easy to manufacture, and Cost can be reduced.

Further, the invention according to claim 4 is an encoder that converts the sliding amount of the slide scale into an electric signal as the alignment tester board, and the dimensional difference detected by the output of the encoder and the tester reference line. And an electrical counter for directly displaying a numerical value proportional to the inclination angle or the dimensional difference calculated by the arc tangent or arc sine trigonometric function calculation according to the relationship. By doing so, the examiner can bring the first and second contacts into contact with the side surface of the rear wheel in a short time of only about 2 to 3 minutes, and display the inclination of the inclination which is indicated by an easily readable number. By simply reading the angle, the toe angle and camber angle of the rear wheel can be easily measured.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view in which an inspection vehicle Z is mounted on a hybrid vehicle inspection apparatus incorporating a toe angle and camber angle measuring device Y. FIG.
FIGS. 3A and 3B are a plan view (a) and a side view (b) of a composite type automobile inspection apparatus incorporating a toe angle and camber angle measuring device Y.

In FIGS. 1 and 2, a front wheel mounting portion 1 on which a front wheel FW is mounted includes rollers 2 and 3 for applying a rotational driving force of a motor (not shown) to the front wheel FW, and a rotational speed detecting device associated therewith. A speedometer tester (not shown) for detecting an error of a speedometer mounted on the vehicle by a device or the like;
Or, while the third wheel is rotating the front wheel FW, the inspector or his assistant depresses the sudden brake from the driver's seat of the inspection vehicle and the front wheel F
A brake tester unit for detecting a change in the rotation state of W and inspecting the effect of a predetermined braking force is incorporated. In the case of a front-wheel drive vehicle, a rotational force may be applied to the front wheels FW by the engine of the inspection vehicle instead of the motor.

The rear wheel mounting portion 4 has a rear wheel RW mounted thereon.
Regarding the inspection of the effect of the braking force, it can perform substantially the same function as the front wheel mounting portion 1. Note that the bottom of the rear wheel mounting portion 4 is supported by an iron wheel 5 so that the operation of adjusting the front and rear on the rail 6 can be freely performed so as to correspond to a different wheelbase for each vehicle type. The rear wheel mounting portion 4 can be located directly below the rear wheel RW. Therefore, the rear wheel RW is connected to the test drum 2
3. Make contact evenly and correctly on 3A and 23B. In addition, similarly to the front wheel mounting section 1, a speedometer tester section (partly not shown)
Then, an error is detected between the true running speed urged by the test drum 23A or 23B and the indicated value indicated by a vehicle speedometer attached to the vehicle. When using the speedometer tester unit, the engine driving force of the inspection vehicle itself may be used, and the operation of the vehicle speedometer is related only to the front wheel FW and is not related to the rear wheel RW. Respond appropriately. Similarly to the front wheel mounting section 1, the brake tester section (not shown) has a test drum 23A.
Or, while the rear wheel RW is rotating together with 23B, the inspector or his assistant steps on the sudden brake from the driver's seat of the inspection vehicle, detects a change in the rotation state of the rear wheel RW, and inspects the effect of the predetermined braking force. The braking force is checked according to the rotating condition of the running wheel.

Further, by the side slip tester section,
The measurement of the amount of side slip of the vehicle when passing through the specified distance, that is, the lateral force, is simulated by a stationary vehicle except for the wheels whose lateral force is to be measured. To measure the lateral force, the side slip test drums 24A and 24B can freely slide in the axial direction and can measure the sliding amount corresponding to the lateral force generated in the axial direction with the rotation of the rear wheel RW. And a composite vehicle inspection device provided with the roller-type side slip tester is a parent body of the present invention.

On the side of the composite type vehicle inspection device provided with the roller type side slip tester serving as the base, the following device is additionally provided detachably by bolting. FIG.
5 are toe angle and camber angle measuring instruments, FIG. 3 is a perspective view, FIG. 4 is a plan view of a main part, FIG. 5 (a) is a perspective view of a main part at the time of toe angle measurement, and FIG. FIG. 5 is a perspective view of a main part at the time of measuring the camber angle, and FIG. 5C is a diagram in which the distance difference sensor is folded when the toe angle and the camber angle are not measured. The toe angle and camber angle measuring device Y is a rear wheel RW of the inspection vehicle Z.
Has an alignment tester board 7 positioned so that the distance difference sensor 13 faces the outside of the inspection vehicle Z. The alignment tester board 7 has a rotating part 12 rotatable by 90 degrees, and a rotating shaft 14 of the rotating part 12.
Is made to coincide with the vehicle width direction R of the inspection vehicle Z.
The rotating portion 12 is temporarily fixed by a spring clip mechanism S at the point where the rotation is completed. Then, first ends of the tester reference line TD having a diameter on the rotating portion 12 are respectively provided at both ends.
And a second measurement point K. Further, the inspector uses the distance difference sensor 13 on the rotating section 12 to perform the first and second inspections.
Are measured in the vehicle width direction R from the measurement points J and K of the rear wheel RW to obtain the first measurement value and the second measurement value, respectively. The dimensional difference TS between the measured values can be detected. However, in the present embodiment, the first
The measured value is used as a reference.

The slide bet mount mechanism 11 has a rear wheel R
The alignment tester board 7 is movable in the vertical direction and the vehicle width direction R and can be temporarily fixed at an arbitrary position such that the tip 13a of the distance difference sensor 13 contacts the side surface of the W. The toe angle and camber angle measuring device Y provided with the slide bed mount mechanism 11 is detachably mounted on the side E of the rear wheel mounting portion 4 by bolting with a bolt 10 or the like. By the toe angle and camber angle measuring device Y, when measuring the toe angle, the tester reference line TD connecting the first and second measurement points J and K is made horizontal so as to coincide with the traveling direction of the inspection vehicle Z, and the camber angle is measured. Sometimes tester reference line T
Rotating part 12 is selectively 9 so that D coincides with the vertical line.
0 degree, and the rear wheel R with respect to the tester reference line TD
The measured value is obtained by displaying the inclination angle X degrees of W.

The rotating section 12 may be a long plate-like member or a rod-like member including a tester reference line TD including first and second measurement points J and K as shown in the figure, or not shown. It may be a disk-shaped member.

A rod 16 of a specified length and a distance difference sensor 13 are provided at the first and second measurement points J and K on the rotating part 12 so as to be freely foldable by hinges 15, respectively. There is a spring-made clip mechanism (not shown) that stands up on the R and temporarily fixes the alignment tester board 7 when not in use.
Is folded along the board surface or the longitudinal direction. By doing so, the inspector executes the toe angle and camber angle measurement of the rear wheel RW in a short time of only about 2 to 3 minutes, and at the time of legal inspection other than the toe angle and camber angle measurement, ie, While the vehicle speedometer and the brake inspection are performed by the same vehicle inspection device, the rod 16 of the specified length and the distance difference sensor 13 are not used, so that the folding is performed along the surface of the alignment tester plate 7 or the longitudinal direction of the rotating portion 12. . By doing so, the efficiency is high without hindering the rotation of the rear wheel RW for the brake inspection or the like of the rear wheel RW or the work of taking the inspection vehicle in and out. Also, by incorporating the toe angle and camber angle measuring device Y, the bulkiness in the vehicle width direction R, which is generated by incorporating the toe angle and camber angle measuring device Y, is reduced so that the space can be saved. Rather than making it move forward and backward in the width direction R,
It is possible to quickly switch between measurement and non-use by a short operation, so that the working efficiency does not decrease.

Further, the alignment tester board 7 has a first contact 16a at the tip of a rod 16 of a specified length, which stands in the vehicle width direction R from the first measurement point J, and performs a second measurement. At the point K, there is a sliding scale 13b that obtains a second measurement value TS having a sliding scale 13b that slides along the vehicle width direction R. In order for the inspector to measure the toe angle and the camber angle using the toe angle and camber angle measuring device Y, the point at which the first contact 16a abuts on the same side surface of the rear wheel RW is used as a reference point, and sliding is performed. The second contact 13a forming the tip of the length 13b is a rear wheel RW.
The sliding amount TS that the sliding scale 13b has slid by contacting the side surface is detected as a dimensional difference TS. Therefore, the number of sliding lengths 13b made of precision parts is not two but only one. The distance difference sensor 13 has an encoder (not shown) for converting the sliding amount TS into an electric signal. The calculation of the arc tangent trigonometric function based on the relationship between the dimension difference TS that the electric signal implies and the tester reference line TD is performed by the electric counter 17.
The tilt angle X degree is calculated and displayed so that it can be read directly, so that the inspector reads the displayed tilt angle X degree as a measured value of the toe angle or the camber angle.

Note that the calculation of the trigonometric function approximates either the arc tangent or the arc sine at a small angle of about 1 degree or less, so that there is no practical problem in calculating either. In addition, the structure of the alignment tester board 7 can be changed in any way for the sake of design.
Is not limited to a spring-made clip mechanism (not shown) that is temporarily fixed on the rotating portion 12 in a state of standing upright in the vehicle width direction R, or a structure in which the existing sliding scale 13b is projected in a rod shape.
For example, a structure in which the entire contact surface, which is a plane including two points corresponding to the first contact 16a and the second contact 13a, is evenly brought into close contact with the side surface of the rear wheel RW not by point contact but by surface contact (FIG. (Not shown).

By doing so, the examiner can bring the first contact 16a and the second contact 13a into contact with the side surface of the rear wheel RW in a short time of only about 2 to 3 minutes, and tilt them. The toe angle and camber angle of the rear wheel RW can be easily measured by reading the easy-to-read numerical display of the angle X degree on the electric counter display 17. Further, a printer 18 for printing the measured values displayed by the angle display means constituted by the electric counter display 17 and the inspection specifications and other records may be provided. In this way, the inspector can reduce the burden of recording the inspection results and the like during busy work, and the service effect can be improved by handing the recording paper printed by the printer 18 to the user.

Here, the principle of toe angle measurement using a conventional toe gauge or alignment tester will be described with reference to FIGS. 6 and 7. FIG. FIG. 6 is a plan view showing how toe angles are measured by the toe gauge and the alignment tester on the same drawing. In FIG. 6, after the narrow width NL of the mark A is measured by the toe gauge 51a, the inspection vehicle is manually pushed (if not placed on the undercarriage 52), and the rear wheel RW is rotated half a turn. WL is measured by the toe gauge 51b, and a width difference GS (not shown) between the wide width WL and the narrow width NL is obtained in a unit of millimeter. For example, it conforms to the standard specification of the initial setting toe-in of 4 mm and passes the inspection.

As a measuring method using an alignment tester, sliding and arbitrary locking in the traveling direction and a vertical direction (not shown) on a rail 53 provided on the side of the mounting table 52 in FIG. The alignment tester 54 is set so as to be freely movable, faces the target with the center of the rotation axis of the rear wheel RW as a target, and is indicated by one side of a conceptual triangle which replicates the toe angle of the rear wheel RW drawn in the figure. If the distance corresponding to the dimension difference TS is measured by a predetermined means, the relationship with the diameter TD of the tester reference line is calculated by an arctangent function, and the inclination angle X degrees is obtained as a measured toe angle value. In the case of the camber angle measurement, although not shown, the mark A and the mark B are set in the vertical direction by the same geometric mathematical concept as the toe angle measurement, and the true inclination angle with respect to the vertical direction is obtained. as a result,
For example, it conforms to the standard specification of the initial setting camber angle minus 0 degrees 40 minutes, and notifies the user that the inspection has passed.

FIG. 7 is a table showing the toe angle and each dimension when the wheel diameter is 600 mm. As can be understood from reading this table, the following two points are known when the angle is small enough to be a problem in the measurement of the toe angle and the camber angle. The first point is that the calculated values of the arc sine and arc tangent functions are almost similar, and any calculation results need to be distinguished and effective. Second, since the width difference GS and the inclination angle X are substantially directly proportional to each other, it is not always necessary to convert the inclination angle X into a frequency and display it in practice of car maintenance. That is, the commonly known toe angle is expressed in millimeters of the width difference GS, which is approximately 4 m.
If it is set to m, ordinary passenger cars are considered to be good. Therefore, the frequency display of the tilt angle X may be calculated as needed. In addition, there are standard specifications of toe angle and camber angle which differ for each vehicle type, and from a computer database or the like stored in advance, the individual specification items of vehicle verification, for example, the standard specification and various specification values, etc., according to the vehicle type and body number, etc. It is appropriate to search and submit to inspection and maintenance related to vehicle inspection.

As a background for exhibiting the effectiveness of the present invention, the alignment tester 54 is usually not provided in a general private vehicle inspection and maintenance shop, and is dedicated to an automobile manufacturer or a large specialty store of automobile tires. Although it is provided as a measuring instrument, the burden of measurement costs and the like by such a rare dedicated measuring instrument was not easy. One problem or another problem is that the overall quality performance, including the durability of each part of a car, has recently been improved, and with the revision of the Road Transport Vehicle Law, there has been a tendency to reduce the statutory inspection items, After vehicle inspection before user inspection, etc., that is, to receive vehicle inspection before conducting regular inspection and maintenance, if there is a slight defect, repair it only after vehicle inspection and pass the vehicle inspection. became. As can be seen, as long as the inspection vehicles are not heavily abused or the safety parts etc. are not clearly damaged by accidents, many vehicles pass the inspection without special inspection and maintenance. . And
There is also a strong demand for deregulation of the legally enforced vehicle inspection system itself. Against this background, car inspection is an ideal service for the owner of the car and the user to find a trouble that the user usually overlooks, while minimizing the burden. Under these circumstances, the present applicant has invented and disclosed a multi-functional and easy-to-use combined type vehicle inspection apparatus.

FIG. 8 is a plan view showing a speedometer and a side slip inspection device in a combined type vehicle inspection device.
Applicable to W and rear wheel RW. The speedometer test drums 23A and 23B constitute the speedometer tester and fulfill its purpose. Further, the lateral force of the wheel mounted on the side slip test drums 24A, 24B is detected based on the movement amount of the side slip test drums 24A, 24B.
The speedometer test drums 23A and 23B are shown in different shapes in FIG. 1, FIG. 2 and FIG. 8, and are transmitted to the angle detection device 24 via 0 ', 20 "and displayed on the tester 25. Each is an embodiment of the present invention.

FIG. 9 is a partial longitudinal side view of FIG. 8, showing that the lateral force, that is, the side slip is (a) a state during non-measurement;
(B) The form being measured. For example, the rear wheel RW is mounted on the speedometer test drums 23A and 23B, and the cylinder 33 is provided with a rotational force corresponding to a predetermined traveling.
Is excited, and the side slip test drums 24A and 24B
Is brought into contact with the rear wheel RW with a predetermined pressing force, and the rear wheel RW is rotated by obtaining a rotational force. The lateral force, that is, the side slip can also be measured in the same manner on the front wheel FW. When the wheel to be inspected does not have the driving force of the engine, it is sufficient to apply the rotational force by the motor provided in the vehicle inspection device.

FIG. 10 is a partially cutaway view showing the manner in which the drum and the square shaft, which are the main parts of the side slip inspection device, are connected. The square shaft 25 is rotatably supported on the rear wheel mounting portion 4 by a shaft 25a. The side slip test drums 24A and 24B are supported on the square shaft 25 so as to be movable in the axial direction. The movable structure is such that a roller 28 rotatably supported by a shaft 17 on a U-shaped metal fitting 26 implanted on the inner wall of the tube of the side slip test drums 24A and 24B has a square plane of the square cross section of the square shaft 25. Four points are supported. With this, the inspection vehicle is mounted on the mounting table of the vehicle inspection device, and the amount of side slip of the vehicle when the inspection vehicle passes within the specified distance is measured while the vehicle body other than its wheels is stationary. For this purpose, the lateral force generated in the axial direction by the rotation of the wheels causes the movement amount of the side slip test drums 24A, 24B movable in the axial direction to be detected via the links 20, 20 ′ and 20 ″. 21
, And the amount of movement is converted into an electric signal by an encoder (not shown) and displayed on the tester 22.

Here, the reason why the composite type vehicle inspection device incorporating the toe angle and camber angle measuring device of the present invention becomes more and more necessary and effective for recent passenger cars will be described below. 1) Due to the suspension of the four-wheel suspension, each wheel is directed independently in a self-directed direction due to climbing on a curb, running on a rough road, and the like, resulting in a misalignment. 2) The weight was reduced for the purpose of improving fuel efficiency, and the chassis structure was replaced with a monocoque body. The rigidity of the vehicle with the chassis structure was low and the alignment of both the front and rear wheels was likely to be out of alignment. 3) The number of vehicles equipped with a rear wheel alignment adjustment mechanism may increase to at least 80% or more of all types of passenger vehicles, and adjustment may be required. 4) In the case of a front wheel drive vehicle, since the front wheels run while pulling the rear wheels, the misalignment of the rear wheels greatly affects high-speed stability. 5) Many rubber parts are used to reduce the impact from the road surface and make the ride more comfortable. However, due to aging, these rubber parts are deformed and worn, causing misalignment and purchasing a new car. Alignment may change in a few months from the beginning. 6) If the toe angle and the camber angle are out of order, the tires wear unevenly. 7) When a four-wheel driver with a full load is running at high speeds, a study of the causal relationship of a toe angle deviation that has some adverse effect on steering wheel operation and leads to serious accidents such as head-on collisions has been studied. (Unpublished in writing for confidential research). For the above reasons, toe angle and camber angle measurement are necessary and effective. However, an alignment tester, which is a dedicated measuring instrument for that purpose, has conventionally required about 10 million yen or more and measurement time is about 1 million yen.
Over time, the cost is about 20,000 yen just for measurement. However, since it usually takes about 15 minutes for each vehicle inspection, it is necessary to measure the toe angle and camber angle in general car maintenance factories and private vehicle inspection sites, which are not commercially viable. At present, it is impossible to implement even if you are aware.

A compound vehicle inspection device incorporating the toe angle and camber angle measuring device of the present invention that successfully copes with the above-mentioned current situation is effectively operated in the following manner. 1) Carry out regular legal inspections. 2) Toe angle and camber angle measurements are performed in 2 to 3 minutes. 3) The lateral force is measured in a few minutes using a roller type side slip tester. 4) The previously measured values of the toe angle, camber angle, and lateral force, which are unique to the inspection vehicle, are compared with the values measured in the above, and the result is judged as pass / fail to confirm whether adjustment is necessary. 5) If it is necessary to adjust the toe angle or the camber angle, the composite inspection system of the present invention has a pit structure, that is, a semi-underground groove. Perform the adjustment work in 20 minutes.

The measurement and adjustment of the toe angle and the camber angle in the manner described above are performed after the normal legal inspection, and there is no need to move the inspection vehicle from one inspection apparatus or place. As a result, it does not unduly increase the burden on users, both in terms of cost and time. Therefore, general car maintenance factories and private car inspection stations are also in line with their commercial nature, so that they can be widely spread in the modern automobile society and contribute to traffic safety.

[0034]

According to the invention, the inspector can easily and inexpensively measure the toe angle and the camber angle of the rear wheel in a short time after the inspection of the vehicle speedometer and the brake,
In addition, there is no need to additionally install a dedicated mounting table for this purpose, and naturally, there is no need for a dedicated installation place, and there is no need to move the inspection vehicle.

Further, according to the second aspect of the present invention, a small amount of bulk in the vehicle width direction caused by incorporating the toe angle and camber angle measuring devices in the conventional vehicle inspection device is reduced so as to save space. In addition, rather than operating the alignment tester board in the vehicle width direction by using only the screw adjuster, it is possible to quickly switch between measurement and non-use with a short operation, so that work efficiency does not decrease. it can.

According to the third aspect of the present invention, the toe angle and camber angle measuring devices are configured by installing only at a single location without using a plurality of sliding scales made of precision parts, so that the number of parts can be reduced. And a design that is easy to manufacture and cost can be reduced.

Further, according to the invention according to claim 4, the inspector can measure the toe angle and the camber angle of the rear wheel by using the first and second contacts in a short time of only about 2 to 3 minutes. The operation can be easily carried out simply by reading the angle of the inclination, which comes into contact with the side surface of the rear wheel and is indicated by an easily readable number.

As described above, the combined vehicle inspection device incorporating the toe angle and camber angle measurement devices for the rear wheels allows the user to freely determine whether or not the vehicle belongs to the legal inspection and maintenance item at the time of vehicle inspection and maintenance. The toe angle and camber angle measurements desired to be performed by the choice of
The inspection can be performed in a short time of about one minute, and if necessary, the inspection and maintenance worker can enter the semi-underground groove of the combined type vehicle inspection device and perform the adjustment work in about 10 to 20 minutes. In addition, since the present invention provides a composite type vehicle inspection device that covers most of the conventional statutory inspection and maintenance items with one unit, there is no need for an extra place or movement of the vehicle, and therefore, effective inspection can be performed without much cost increase. It contributes to the elimination of traffic accidents.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, in which an inspection vehicle is mounted on a composite automobile inspection apparatus incorporating a toe angle and camber angle measuring device.

2A and 2B are a plan view and a side view, respectively, of a hybrid vehicle inspection apparatus incorporating a toe angle and camber angle measuring device, showing an embodiment of the present invention.

FIG. 3 shows an embodiment of the present invention and is a perspective view of a toe angle and camber angle measuring device.

FIG. 4 is a plan view of a main part of FIG.

FIG. 5A is a perspective view of a main part at the time of measuring the toe angle in FIG. 3; FIG. 4B is a perspective view of a main part when the camber angle is measured in FIG. FIG. 4C is a view in which the distance difference sensor is folded when the toe angle and the camber angle are not measured in FIG.

FIG. 6 is a plan view showing how toe angle is measured by a toe gauge and an alignment tester on the same drawing in order to explain the principle.

FIG. 7 is a table showing toe angles and respective dimensions when a wheel diameter is 600 mm.

FIG. 8 is a plan view showing a speedometer and a side slip inspection device in the hybrid vehicle inspection device.

FIG. 9 is a partially longitudinal side view of FIG. 8, showing (a) a form in which a side slip is not measured and (b) a form in which a side slip is being measured.

FIG. 10 is a view showing a partially cut-away manner of a connection between a drum and a square shaft, which is a main part of a roller type side slip inspection device in a composite type automobile inspection device.

[Explanation of symbols]

 2, 3 Roller 7 Alignment Tester Board 11 Slide Bed Mount Mechanism 12 Rotating Part 13 Distance Difference Sensor 13a Second Contact 13b Sliding Scale 14 Rotation Axis of Alignment Tester Board 7 16 Rod of Specified Length 16a First Contact 17 Electrical counter display 20, 20 ', 20 "Link 24A, 24B Side slip test drum 52 Mounting table E Side J First measurement point K Second measurement point RW Rear wheel TD Tester reference line TS Dimension difference R Vehicle width direction X Tilt angle Y Toe angle and camber angle measuring device Z Inspection vehicle

Claims (4)

[Claims] 1. A mounting table on which an inspection vehicle is mounted and mounted, and a brake tester section for urging a driving force by a roller in contact with a wheel of the inspection vehicle and inspecting a braking force based on a rotation state of the wheel. A speedometer tester unit for inspecting an error of an indicated value of a speedometer attached to the inspection vehicle with respect to a true rotation speed at which the wheels contribute to traveling, and a vehicle skidding amount when passing within a specified distance. A composite vehicle inspection system equipped with a roller-type side slip tester that can measure the amount of movement of a roller that is movable in the axial direction by a link mechanism due to a lateral force generated in the axial direction due to the rotation of the wheel for measurement. In the apparatus, an alignment tester board positioned to face a rear wheel of the inspection vehicle from the outside of the inspection vehicle and forming a toe angle and a camber angle measuring device, and the alignment tester board The direction of the rotation axis is aligned with the vehicle width direction of the inspection vehicle, the tester reference line consisting of a straight line of a predetermined length is matched with the traveling direction of the inspection vehicle when measuring the toe angle, and when the camber angle is measured A rotating portion that can be selectively rotated by 90 degrees and temporarily fixed so that the tester reference line coincides with a vertical line, and the rear wheel from a first measurement point and a second measurement point at both ends of the tester reference line. The first measured value and the second measured the distance in the vehicle width direction to the side of the vehicle.
A distance difference sensor for measuring a dimensional difference from the measured value, a slide bed mounting mechanism provided so that the alignment tester board is movable in the vertical direction and the vehicle width direction and can be temporarily fixed at an arbitrary position, A composite vehicle inspection device incorporating a toe angle and camber angle measuring device, further comprising a display unit for displaying an inclination of the rear wheel with respect to the tester reference line based on a dimensional difference. 2. The distance difference sensor is arranged on the rotating part by a structure that can be freely expanded and contracted, and stands up and temporarily fixed in the vehicle width direction when used, and the surface of the alignment tester board when not used. The composite vehicle inspection device incorporating the toe angle and camber angle measuring device according to claim 1, wherein the deployment is closed along the line. 3. A rod of a specified length forming a first contact at the tip as the distance difference sensor is erected in the vehicle width direction from the first measurement point, and a rod is formed from the second measurement point. A sliding scale that obtains the second measurement value that slides along the vehicle width direction is upright, and a second contact that forms a tip of the sliding scale abuts on a side surface of the rear wheel, The toe angle and camber angle measuring device according to claim 1 or 2, wherein the dimensional difference is detected based on a point at which the first contact piece abuts on the side surface. Composite inspection system. 4. An encoder for converting the sliding amount of the slide scale into an electric signal as the alignment tester board, and an arc tangent or arc sine based on a relationship between the dimension difference detected by an output of the encoder and the tester reference line. 4. An electronic counting display device for displaying the angle of the inclination calculated by the trigonometric function calculation or a number proportional to the dimensional difference in a directly readable manner. A combined vehicle inspection device incorporating the toe angle and camber angle measuring device according to one of the above.