JP2999677B2 - Vehicle braking performance measurement device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring braking performance of a vehicle, which can easily measure the braking performance of a vehicle such as an ABS (anti-lock brake system).

[0002]

2. Description of the Related Art In recent years, vehicles such as luxury passenger cars are equipped with, for example, a traction control system (TCS) and a non-slip differential device in addition to the above-described braking device such as ABS. Is equipped with a center differential device and the like.

[0003] These various types of braking devices provide improved maneuverability and safety to the equipped vehicle, but special conditions are required for checking their operation. Conventionally, a fairly large-scale performance measuring device has been required.

[0004] In view of such a conventional situation, the applicant of the present invention has proposed a method for measuring various braking performances such as the above ABS.
A portable braking performance measuring device that is small and can be freely moved to the four wheels of the vehicle to be measured has already been proposed (Japanese Patent Application No. 6-56748). This braking performance measuring device is shown in FIGS.
In measuring the braking performance, the measurement is performed in accordance with the operation principle diagram as shown in FIG.

That is, the braking performance measuring device 1 basically has the same structure for all four,
One of any of ₁ through T ₄ becomes a frame frame 2 in which a pair of rotating rollers 3, 4 of the front and rear are arranged in parallel to be mounted rolling contact. Then, the front rotating roller 3
Are a driving source 5 such as a motor installed in a part of the frame 2, a pulley 6 mounted on a rotating shaft 3 a of the rotating roller 3, a driving force transmitting means 7 such as a belt or a chain, and a driving source. 5 are connected rotatably through pulleys 8. On the other hand, a rotation detector 9 for detecting the rotation of the rotating roller 4 is mounted on the rotating shaft 4a of the rear rotating roller 4.

In addition, the front and rear edges of the frame frame 2 are provided with inclined plates 1 for filling up and lower steps when the frame frame 2 is simply installed on the floor of a maintenance shop or the like.
Reference numerals 0 and 11 are attached so as to be able to swing. Of course, the inclined plates 10 and 11 are configured to be detachable, and pits (recesses) for the frame are provided on a floor surface of a maintenance shop or the like.
In the case where is provided, the front and rear inclined plates 10 and 11 are removed, and
The frame 2 may be embedded in the pit. After the measurement, the wheels T _{1 to} T ₄ of the vehicle A to be measured carried in between the rotating rollers 3 and ₄ are pushed up and rotated in the parallel gaps between the rotating rollers 3 and 4. A lift 12 is provided so as to easily escape from the valley between the rollers 3 and 4. Although not shown, the lift 12 is configured to move up and down by a hydraulic mechanism or the like.

With such a braking performance measuring device 1,
In order to measure the braking performance of ABS or the like, as shown in the operation principle diagram of FIG. 14, each wheel T of the vehicle A to be measured is placed between each pair of rotating rollers 3 and 4 of the four braking performance measuring devices 1. ₁
ＴT ₄ is placed by rolling contact. In this case, as shown by the arrow B in FIG. 14, each braking performance measuring device 1 is configured such that the rotating roller 3 in front of the braking performance measuring device 1 is on the front side with respect to the front side (front) side of the vehicle A to be measured. , So that the rear rotating roller 4 is on the rear side.

In this state, a measurer (driver) enters the vehicle A to be measured and the braking system of each of the wheels T _{1 to} T ₄ is set in a neutral state (free state).
Thereafter, the driving source 5 is driven to rotate the front rotating roller 3. By the rotation of the rotating roller 3,
Each of the wheels T _{1 to} T ₄ of the measurement target vehicle A rotates. This rotation is performed until the rotation speed corresponding to the operating speed of the ABS (for example, a speed of about 20 to 60 km / h) is reached.

When the predetermined number of revolutions is reached in this way,
The measurer depresses the brake pedal. At this time, AB
When S is working properly,
Reaction force to return the brake pedal (kickback force)
First, the measurer can intuitively know the operation of the ABS from the sense of the toes. In this case, from the interior of the measurement side, but I do not know whether the operation of each individual wheel T ₁ through T _4, external measurer (observer)
From, during operation of the ABS, since the rotational speed of the corresponding wheel repeated reduction and speed increase, possible from the rotational state of the wheel, also be confirmed by visual observation the operating state of the ABS in each individual wheel T ₁ through T ₄ . Of course, it can be seen from the detection data (rotation data) from the rotation detector 9 attached to each rear rotation roller 4. That is, if the detection data from the rotation detector 9 is recorded or monitored by a display device (such as a CRT), each of the wheels T ₁ to T ₁ can be more accurately determined.
It is possible to grasp the operating state of the ABS in T _4.

In such an ABS performance measurement, since the front rotating roller 3 is driven to rotate, the load of the vehicle A to be measured is greatly applied to the rear rotating roller 4 during the measurement, and the front rotating roller 3 is driven. Since the rotating roller 3 becomes lighter, the driving source 5 to be used can be satisfactorily handled by a small motor or the like, and the apparatus can be reduced in size and cost, and excellent effects can be obtained.

According to the braking performance measuring device 1,
In addition to the above ABS measurements, other performances can also be measured. For example, when the measurement target vehicle A is equipped with a TCS, the performance of the TCS can also be measured as follows. First, as in the case of FIG. 14, the wheels T _{1 to} T ₄ of the vehicle A to be measured are rolled and mounted between the pair of rotating rollers 3 and 4 of the four braking performance measuring devices 1. In this state, a measurement person (driver) gets into the measurement target vehicle A, stops driving the driving source 5, and sets the front and rear rotation rollers 3, 4 in a rotation-free state. The engine of the target vehicle A is driven. This engine driven, via a respective drive wheels T ₁ through T ₂ or T ₃ through T _4, rotates the respective rotating rollers 3 and 4 of the free state.

In this case, the TCS compares the vehicle speed with the drive wheel speed, and increases the brake fluid pressure for a wheel whose drive wheel speed is abnormally higher than the vehicle speed so as to approach the vehicle speed. Since the pressure is reduced or the rotation of the engine is reduced, when the system operates normally, even if the measurer depresses the accelerator pedal, the driving wheels do not rotate and try to maintain a low speed. On the other hand, when there is an abnormality in the TCS, depressing the accelerator pedal causes the drive wheels to rotate and rise accordingly. Therefore, the measurer can easily know whether the traction control system is normal or abnormal from these feelings when the accelerator pedal is depressed.

Further, the left and right wheels of the measurement target vehicle A, for the wheel T ₃ through T _4, for example, the rear left and right, when the Nonsurinpudefu device is equipped with left and right wheels T ₃ ~
Since the speed difference T ₄ is controlled to be minimized, the wheels T ₃ of the right and left at a similar procedure to the above TCS
Rotational speed difference through T ₄ (each corresponding rotation detection 9,
9), the quality of the non-slimp differential device can be easily measured.

Further, the vehicle A to be measured is a full-time 4 W
In the case of the D vehicle, when the center differential device is provided, the speed difference between the front and rear wheels T _{1 to} T ₃ and T _{2 to} T ₄ is controlled to be minimized. Front and rear wheels T _{1 to} T ₃ , T _{2 to} T ₄ during the same operation
(The difference between the rotation speeds obtained by the corresponding rotation detections 9 and 9), the quality of the center differential device can be easily measured.

As described above, according to the braking performance measuring device 1, the device can be freely installed, and the device can be downsized.
At the same time, it is possible to reduce the cost, and obtain an excellent effect of being able to measure not only the ABS performance but also various performances such as a TCS, a non-slip differential device, and a center differential device.

[0016]

However, the present inventors have further studied the braking performance measuring apparatus 1 and found the following points to be improved.

(1) First, this apparatus itself is a flat type having a relatively short height and can be freely transported, but it has a considerable weight and its actual movement is not easy. In view of this, the use of a traveling roller such as a caster was considered. However, it was found that a normal spring-mounted caster (commercially available) cannot sufficiently cope with the problem because the mounted object is a heavy object such as a vehicle. However, when a custom-made high-strength spring is used, not only the cost is increased, but also depending on the structure, the height and outer shape of the caster may increase, and the height of the device itself may increase. When the height of the device becomes too high, the slopes of the inclined plates 10 and 11 prove to be unsuitable for the present device for riding the vehicle A to be measured. For this reason, the present inventors have set the height to a low level, take no large space, are inexpensive, and use a single sheet on the upper surface of the frame 2 as a method suitable for the characteristics of the present apparatus. The present inventors have found a method of mounting a springy plate member made of a thick elastic steel plate or the like and attaching a caster having a strong and simple structure without a spring to the bottom surface.

(2) In the case of the present apparatus, the escape of the wheels T _{1 to} T ₄ of the vehicle A to be measured after the measurement is completed
2, the incorporation (attachment) of the lift 12 not only causes an increase in cost, but also in the present apparatus, the height of the apparatus itself is low and the space between the pair of rotating rollers 3 and 4 is narrow. It was quite difficult because it would be attached. The present inventors have, as a method of escape wheel T ₁ through T ₄ that does not rely on the lift 12, first, the surface of the rotating roller of the rear roughened, when escape measurement target vehicle A after completion of the measurement Found that it was easy to escape by backing out (retreating) from the rear rotating roller side.

(3) On the other hand, such wheels T _{1 to} T ₄
In order to secure a more reliable escape method, it has been found that a rotation block member made of a nut or the like is provided on the rotation shaft of the rotation roller, and a stopper member is attached to or detached from the rotation block member, thereby making it easier to escape. .

(4) In measuring the performance of the ABS or the like, the state of each of the wheels T _{1 to} T ₄ is detected by the rotation detector 9 and the detected data is recorded or displayed on a display device (CRT or CRT). Although a method such as monitoring with a liquid crystal display or the like is employed, there are insufficient points in terms of visibility and the like. Therefore, the present inventors have designed a layout display section (vehicle design section) for displaying the four-wheel positions of the measurement target vehicle A in a plane on the display surface of the display device to which each detection data from the rotation detector 9 is input. It has been found that, by providing a bar graph-shaped indicator in the portion corresponding to the wheel of the layout display unit, the visibility of the display is improved, and quick and safe workability can be obtained.

The present invention has been made in view of the above point of view, and an object of the present invention is to provide a more excellent vehicle braking performance measuring apparatus by the above-described improvement.

[0022]

According to a first aspect of the present invention, there is provided an apparatus for measuring braking performance of a vehicle, wherein a pair of rotating rollers before and after the wheels of the vehicle to be measured are placed in rolling contact with each other at appropriate intervals. A frame frame, a drive source for rotationally driving a rotation roller in front of the frame frame, a rotation detector for detecting rotation of a rotation roller behind the frame frame, and a rotation detector for the frame frame. A device comprising an inclined plate attached to the front and rear, and a springy plate member having running rollers at left and right or front and rear spaced positions on the bottom surface of the frame frame body, the pair of rotating rollers When the non-wheel is mounted on the frame frame, the frame is floated off the floor via the traveling rollers, while when the wheels are mounted on the pair of rotating rollers, the spring plate member is bent and the bottom side of the frame is deformed. Floor In the device so as to ground.

[0023]

According to a second aspect of the present invention, there is provided an apparatus for measuring braking performance of a vehicle, wherein a pair of rotating rollers before and after the wheels of the vehicle to be measured are placed in rolling contact with each other are appropriately separated and arranged in parallel. Body, a drive source for rotatingly driving a rotating roller in front of the frame frame, a rotation detector for detecting rotation of a rotating roller behind the frame frame, and an inclined plate attached to the front and rear of the frame frame. And a rotating block portion is provided on a rotation shaft of the rotating roller in a mounting portion of the frame frame and the rotating roller, and the rotating block portion is provided on the frame frame side.
Having two stopper pieces for sandwiching
-The two stopper pieces are connected to the frame
The vehicle brake performance measuring device is characterized in that it can be removably mounted in the form of being dropped from a through hole and locks the rotation of the rotating roller when the vehicle to be measured escapes.

According to a third aspect of the present invention, there is provided an apparatus for measuring braking performance of a vehicle, wherein a pair of rotating rollers before and after the wheels of the vehicle to be measured are placed in rolling contact with each other are appropriately separated and arranged in parallel. Body, a drive source for rotatingly driving a rotating roller in front of the frame frame, a rotation detector for detecting rotation of a rotating roller behind the frame frame, and an inclined plate attached to the front and rear of the frame frame. When measuring the performance of four wheels of the vehicle to be measured such as ABS, the four frame frames are arranged in four wheel portions of the vehicle to be measured, and the frame in each of these frame bodies is measured. A display device for inputting each detection data from the rotation detector is provided, and a layout display unit for displaying the four-wheel position of the vehicle to be measured in a plane is provided on a display surface of the display device. Each wheel corresponding portion of the 4-wheel position of Uto display unit provided with four bar-shaped display, the four bar detection data in 4-wheel of the measurement target vehicle
A braking performance measuring device for a vehicle, characterized in that the information is visually displayed by means of respective indicators.

[0026]

According to the apparatus for measuring braking performance of a vehicle according to the first aspect of the present invention, the combination of the spring plate member and the traveling roller enables the vehicle to be easily moved when the wheel is not mounted. Costly equipment is obtained.

[0027]

According to the apparatus for measuring braking performance of a vehicle according to the second aspect of the present invention, a rotary block is provided on a rotary shaft of a rotary roller and a stopper member detachably engaged with the rotary block is provided. Since it is mounted, a more reliable escape of the vehicle to be measured can be obtained by a simple combination of parts and a simple operation.

According to the vehicle braking performance measuring apparatus according to the third aspect of the present invention, the positions of the four wheels of the vehicle to be measured are displayed in a plane on the display surface of the display device corresponding to the four wheels of the vehicle to be measured. While a layout display unit is provided, a bar graph display is provided in a portion corresponding to the wheel of the layout display unit, so that the visibility of the display is enhanced, and quick and safe workability is obtained.

[0030]

1 to 3 show an embodiment of a vehicle braking performance measuring apparatus according to the present invention. The basic structure of the apparatus is as follows.
This is almost the same as that of FIGS. 11 to 13 described above. However, in the case of the braking performance measuring device 1, the wheels T _{1 to} T T before and after the vehicle A to be measured are located between the pair of front and rear rotating rollers 3 and 4.
While eliminating the lift that pushes up ₄ , the frame 2
The right and left directions of the bottom surface (a direction orthogonal to the direction in which the front and rear inclined plates 10 and 11 are present, not limited to the left and right directions
If the adjustment with the inclined plates 10 and 11 is performed, the front-back direction is also possible.)
A spring-like plate member 21 having four running rollers 22 made of a strong and simple structure without a spring is attached to the separated position.

The springy plate member 21 is made of, for example, a single thick elastic steel plate, and has a large opening 21a in the center thereof. The rotating rollers 3 and 4 are exposed. Further, the length of the leg portion 23 of the traveling roller 22 is set slightly longer than the height of the frame body 2, and as shown in FIG.
When the non-wheel is mounted on the wheel 4, the bottom surface of the frame 2 floats from the floor.

Therefore, when not in use, the braking performance measuring device 1 can be easily and freely moved to a required location by the action of the traveling rollers 22.
At the time of use, the wheels T _{1 to} T ₄ of the measurement target vehicle A are used.
When the vehicle rides between the pair of rotating rollers 3 and 4, that is, when the wheels are mounted, the spring plate member 21 is bent by the load of the vehicle A to be measured as shown in FIG. The bottom side of 2 automatically and firmly touches the floor.

By the action of the springy plate member 21 and the running rollers 22, when not in use, it can be cleared at a corner of a factory or the like and can be easily carried out only during use. Therefore, there is no need to always take up installation space, and excellent usability is obtained. In addition, in the case of the present configuration in which a lift is not incorporated, the height of the frame 2 can be easily kept low, a large space is not taken, and the cost is low. I can say.

FIGS. 4 and 5 show another embodiment of the vehicle braking performance measuring apparatus according to the present invention, and its basic structure is substantially the same as that of FIGS. However,
In the case of the present braking performance measuring device 1, of the pair of front and rear rotating rollers 3, 4, an appropriate unevenness is provided on the surface of the rear rotating roller 4 by a knurling process, an etching process, or the like to form a rough surface 31. The front rotating roller 3 is a normal smooth smooth surface 32.

Therefore, after the performance measurement of the ABS or the like is completed, if the vehicle A to be measured is caused to back up and retreat from the rear rotating roller 4 side, the large frictional force of the rough surface 31 causes the lift even without the lift. , Can escape relatively easily. According to the roughening of the rear rotating roller 4, not only at the time of this escape but also at the time of performance measurement which is an original function such as ABS, the front rotating roller 3 which remains the smooth surface 32 is simulated. It is easy to reproduce a slip (slip on a snowy road or the like) and the like.
Adhesion between tire ₁ through T ₄ are, by the frictional force,
Because of good holding, the rotation detector 9 has the advantage that the rotation of each wheel T _{1 to} T ₄ can be measured more accurately by the rotation detector 9. In other words, this configuration can be said to be an optimal configuration for the present apparatus.

FIGS. 6 and 7 show still another embodiment of the vehicle braking performance measuring apparatus according to the present invention, and its basic structure is substantially the same as that of FIGS. . However, in the case of the braking performance measuring device 1, the rotating shafts 3a, 3a of the rotating rollers 3, 4 protruding outside the frame 2 are located at the mounting portions of the frame 2 and the rotating rollers 3, 4. A rotating block 41 made of a member such as a nut is fixed to the portion 4a (in either case), and the rotating block 41 is attached to the frame 2 side.
The stopper member 42 to be engaged with is provided detachably.

As shown in FIG. 8, for example, the stopper member 42 includes a rod-shaped base portion 42a and the base portion 4a.
And two stopper pieces 42b, 42b which are fixed to the bottom surface of the rotary block 41 and sandwich both sides of the nut of the rotary block portion 41 therebetween.
If the b and 42b are dropped into, for example, through holes 43 and 43 formed in the portion of the spring plate member 21 on the frame 2, the rotary block 41 is automatically locked. In order to easily attach / detach the stopper member 42, for example, a knob 44 is provided on the upper surface of the base portion 42a, or a recess for knob is provided on a side surface thereof as shown in FIGS. A part 45 and the like may be provided.

Therefore, this stopper member 42 is
After the performance measurement of the ABS or the like is completed, the rotation of the rotating rollers 3 and 4 is stopped reliably by locking the rotating block 41, so that the vehicle A to be measured can escape more reliably and quickly. Can be. In this case, locking can be performed very simply by simply dropping the stopper pieces 42b, 42b of the stopper member 42 into the through holes 43, 43 of the spring plate member 21. In the next measurement,
You just need to remove it. Such a stopper member 4
The lock mechanism composed of a combination of the rotary block 2 and the rotary block 41 is not limited to a structure such as the above-described nut or two stopper pieces.
Other structures may be used. This locking mechanism is similar to that shown in FIG.
5 may be used in combination with a device in which the surface of the rotating roller 4 on the rear side of FIG.
By improving the frictional force and stopping the rotation of the roller, it is possible to escape better.

FIGS. 9 and 10 show still another embodiment of the vehicle braking performance measuring device according to the present invention. In this case, the performance of an ABS or the like is measured. For example, the apparatus shown in FIGS. 4 and 5 is disposed on the four wheels T _{1 to} T _{4 of the} vehicle A to be measured. On the other hand, a display device 51 to which each detection data from the rotation detector 9 of the present device 1 is inputted is installed on an appropriate side portion, and a display surface 51a of the display device 51 has a display surface 51a of the vehicle to be measured. A layout display section (vehicle design section) 52 for displaying the four-wheel positions T ₁ ′ to T ₄ ′ in a planar manner is provided.
Is provided. As the display 53, for example, an LED
Arranging a plurality of light emitting elements 53a in the longitudinal direction in a column, such as, according to the rotation speed of the wheel T ₁ through T _4, configured such that the light emitting rod extends from the lower, also, the light-emitting element 5
A scale corresponding to the number of rotations, an appropriate numerical value 53b, and the like are provided near 3a. Furthermore, the wheels T _{1 to} T ₄
When the vehicle is locked or stopped, a red light-emitting element 54 is mounted on each of the wheels T _{1 to} T ₄ to draw special attention.
May be provided in the corresponding portions.

Therefore, according to the arrangement of the present apparatus 1, A
At the time of measuring the performance of the BS or the like, the turning state of each of the wheels T _{1 to} T ₄ can be visually and instantaneously judged by the measurer as a graph-shaped light emitting bar by the blinking of the light emitting element 53a. That is, when the ABS is operating normally, the rotation speed of the wheel T ₁ through T ₄ are rapidly changing, since a plurality of light emitting elements 53a graphically the emission rod by up and down vigorously, very excellent visibility Property is obtained.
Of course, at this time, the positions of the corresponding wheels T _{1 to} T ₄ are also instantaneously determined from the layout display section 52 of the display device 51. That is, from these excellent visibility, quick and safe workability can be obtained.

[0041]

As is clear from the above description, according to the present invention, the following excellent effects can be obtained.

(1) First, according to the apparatus for measuring braking performance of a vehicle according to the first aspect of the present invention, when the vehicle is mounted on non-wheels, it can be easily moved by the combination of the spring plate member and the traveling roller. I can do it. Here, in the case where the traveling roller is a caster without a spring, a strong and simple structure can be obtained, and it can sufficiently cope with a heavy object such as a vehicle. In addition, since a custom-made high-strength spring is not used, the height and outer shape of the caster are not particularly increased, and the height of the device itself can be suppressed to be low. Therefore, it can be said that the structure is optimal for the present device in which the vehicle to be measured can ride on the slope of the inclined plate. Further, the combination of the traveling roller and the spring plate member itself has a simple structure, so that the cost can be reduced.

[0043]

(2) According to the braking performance measuring device for a vehicle according to the second aspect of the present invention, the stopper is provided on the rotating shaft of the rotating roller and is detachably engaged with the rotating block. Because it is a member to be attached, by combining simple parts and simple operation,
A more reliable escape of the vehicle to be measured can be obtained.

[0045] (3) According to the braking performance measuring device for a vehicle according to claim 3, wherein according to the present invention, planar four-wheel position of the measurement target vehicle on the display surface of the display device corresponding to the four-wheel portion of the measurement target vehicle In addition, since a layout display unit for displaying the information is provided, a bar graph display is provided in a portion corresponding to the wheel of the layout display unit, so that the visibility of the display is improved, and quick and safe operability can be obtained.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional side view showing an embodiment of a vehicle braking performance measuring apparatus according to the present invention.

FIG. 2 is a plan view showing the vehicle braking performance measuring device of FIG.

3 is a partial vertical sectional side view showing a state where wheels of a vehicle to be measured are mounted in the vehicle braking performance measuring device of FIG. 1;

FIG. 4 is a plan view showing another embodiment of the vehicle braking performance measuring device according to the present invention.

FIG. 5 is an explanatory diagram showing an operation state of the vehicle braking performance measuring device of FIG. 4;

FIG. 6 is a partial vertical sectional side view showing still another embodiment of the vehicle braking performance measuring device according to the present invention.

7 is a partial longitudinal side view of the vehicle braking performance measuring device of FIG. 6;

8 is a perspective view of a stopper member in the vehicle braking performance measuring device of FIG.

FIG. 9 is a plan view showing still another embodiment of the vehicle braking performance measuring device according to the present invention.

10 is a front view showing a display surface of a display device used in the vehicle braking performance measuring device of FIG. 9;

FIG. 11 is a perspective view showing an arrangement state of a braking performance measuring device for a portable vehicle.

FIG. 12 is a plan view showing the vehicle braking performance measuring device of FIG. 11;

FIG. 13 is an explanatory diagram showing an operation state of the vehicle braking performance measuring device of FIG. 11;

FIG. 14 is an explanatory diagram showing an operation principle of the vehicle braking performance measuring device of FIG. 11;

[Explanation of symbols]

REFERENCE SIGNS LIST 1 vehicle braking performance measuring device 2 frame frame 3 front rotating roller 4 rear rotating roller 5 drive source 9 rotation detector 10 inclined plate 11 inclined plate 21 springy plate member 22 running roller 23 31 rough surface 32 smooth surface 41 Rotary block part 42 Stopper member 42b Stopper piece 51 Display device 52 Layout display part 53 Display A Vehicle to be measured T _{1 to} T ₄ wheels

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nobuo Ogura 3-5-28 Mita, Minato-ku, Tokyo Nissan Altia Co., Ltd. (72) Inventor Shoichi Arakawa 2-3-3 Yoshima Industrial Park in Iwaki City, Fukushima Prefecture Orion Techno Co., Ltd. (56) References JP-A-6-58843 (JP, A) JP-A-3-97645 (JP, U) JP-B-2-20929 (JP, B2) JP-B 5-36196 (JP, Y2) J-Publication 5-15046 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁷ , DB name) G01M 17/00-17/007

Claims (3)

(57) [Claims] 1. A frame frame in which a pair of rotating rollers before and after a wheel of a vehicle to be measured is rolled and mounted are appropriately separated and arranged in parallel, and a rotating roller in front of the frame frame is rotationally driven. A drive source to be driven, a rotation detector for detecting rotation of a rotation roller behind the frame, and an inclined plate attached to the front and rear of the frame, and an apparatus including: A spring-like plate member having a traveling roller is attached at a position on the bottom surface left or right or front and rear, and when the non-wheels are mounted on the pair of rotating rollers, the frame is separated from the floor via the traveling roller. A braking performance measuring device for a vehicle, wherein the springy plate member flexes when the wheels are mounted on the pair of rotating rollers while floating, so that the bottom surface side of the frame frame comes into contact with the floor surface. 2. A frame frame in which a pair of rotary rollers before and after the wheels of a vehicle to be measured are rolled and mounted are appropriately separated and arranged in parallel, and a rotary roller in front of the frame frame is rotationally driven. A drive source to be driven, a rotation detector for detecting the rotation of the rotation roller behind the frame, and an inclined plate attached to the front and rear of the frame, and the frame, A rotating block portion is provided on a rotating shaft of the rotating roller in a mounting portion of the rotating roller, and the rotating block portion is provided on the frame side.
Having two stopper pieces for sandwiching
-The two stopper pieces are connected to the frame
A vehicle braking performance measuring apparatus characterized in that it can be removably mounted in a form of being dropped from a through hole of the vehicle, and locks the rotation of the rotating roller when the vehicle to be measured escapes. 3. A frame frame in which a pair of rotary rollers before and after the wheels of the vehicle to be measured are placed in rolling contact with each other are appropriately separated and arranged in parallel, and a rotary roller in front of the frame frame is rotationally driven. A drive source to be driven, a rotation detector for detecting the rotation of a rotating roller behind the frame, and an inclined plate attached to the front and rear of the frame, wherein the vehicle to be measured such as ABS is used. At the time of measuring the performance of the four wheels, the four frame frames are arranged in the four wheel portion of the vehicle to be measured, and a display device to which each detection data from the rotation detector in each frame frame is input is provided. provided, and, while the display surface of the display device provided with a layout display unit for displaying the four-wheel position of the measurement target vehicle in a plan view, four to each wheel corresponding portion of the 4-wheel position of the layout display unit Bogu of A rough display is provided, and the detection data of four wheels of the vehicle to be measured are displayed in the four bar graphs.
An apparatus for measuring braking performance of a vehicle, characterized in that the information is visually displayed on each of the display devices.