JP2006023117A - Truck for vehicular collision test - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To precisely regenerate a vehicle behavior in collision while restraining an expense required for a collision test from being increased. <P>SOLUTION: Wheels 17 are attached to a body 15 of a truck for a vehicular collision test collided with a testing vehicle relatively in a prescribed direction and a prescribed speed, with an interposed suspension device 20 provided with a suspension spring and a damper. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle collision test carriage.

In recent years, it has become more and more important to reduce the number of casualties due to automobile accidents, and there is an urgent need to improve collision safety technology. Along with accident analysis of actual collision accident examples, various crash tests are being conducted to ensure the passenger's living space at the time of collision between vehicles of different weights and to satisfy the requirements such as compatibility aiming for coexistence with each other .
For example, in a frontal collision, a full lap collision in which all the front surfaces of the vehicle collide perpendicularly to the fixed barrier, an offset collision in which the front surface of the vehicle partially overlaps the deformable barrier, or the front of the vehicle is a utility pole or tree Tests such as a pole collision that collides with a pole-like member and an oblique collision that collides with an oblique barrier have been performed.
Furthermore, for side impacts that are relatively infrequent but relatively damaging to occupants, a side impact test in which a collision test carriage (moving barrier) is made to collide with the side of the vehicle from the side or diagonal of the vehicle. In addition, tests such as a pole collision in which a pole-shaped member collides with a side surface are performed.
For example, in order to make a vehicle body structure that prevents damage to a fuel tank mounted at the rear of the vehicle, a rear collision test in which a collision test carriage collides with the rear of the vehicle and a vehicle body deformation during vehicle rollover are tested. A rollover test and the like are performed.
Conventionally, a collision test carriage is provided with a deformation absorbing material that deforms, for example, when it collides with a test vehicle, and is pulled by a wire rope or the like so that the deformation absorbing material contacts the test vehicle at the time of collision. It is made to collide with a test vehicle at speed (for example, refer to patent documents 1).
No. 3-2838

By the way, in the collision test using the collision test bogie according to the above-described prior art, the case where the vehicles are actually caused to collide with each other while suppressing the increase in the cost required when the test for actually making the vehicles collide with each other is suppressed. It is desired to configure a collision test carriage so that equivalent vehicle behavior is accurately reproduced.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a vehicle collision test carriage capable of accurately reproducing vehicle behavior at the time of collision while suppressing an increase in cost required for a collision test. And

  In order to solve the above problems and achieve the object, a vehicle collision test carriage according to the present invention is used for a vehicle collision test in which a vehicle collides with a vehicle in a predetermined direction and a predetermined speed. A carriage (for example, the suspension spring 32 in the embodiment) and a damper (for example, the damper in the embodiment) are provided on a vehicle body of the vehicle collision test carriage (for example, the vehicle body 15 in the embodiment). 33), and a wheel is mounted by interposing a suspension device (for example, the suspension device 20 in the embodiment).

According to the vehicle collision test carriage having the above-described configuration, for example, the vehicle collision test carriage is pulled by a wire rope or the like by interposing a suspension device between the vehicle body of the vehicle collision test carriage and each front wheel. When making it collide with a vehicle, desired straightness can be ensured by absorbing the uneven state of the traveling road.
In addition, it is possible to accurately reproduce the pitching behavior that occurs from the middle of the collision to the latter half of the collision when the actual vehicles collide with each other even when the vehicle collision test carriage and the test vehicle collide.

  As described above, according to the vehicle collision test carriage of the present invention described in claim 1, when the vehicle collision test carriage is pulled with a wire rope or the like to collide with the test vehicle, the unevenness of the travel path is determined. It is possible to ensure the desired straightness by absorbing the state and the like, and in the event of a collision between actual vehicles, particularly the pitching behavior that occurs from the middle of the collision to the second half of the collision, the vehicle collision test carriage and the test vehicle Can be accurately reproduced even in the event of a collision.

Hereinafter, a vehicle collision test carriage according to an embodiment of the present invention will be described with reference to the accompanying drawings.
The vehicle collision test carriage 10 according to the present embodiment includes a pair of left and right side frame members 11, 11 that extend along the front-rear direction and are spaced apart in the vehicle width direction, as shown in FIGS. A pair of front and rear front frame members 12 and 13 that extend along the vehicle width direction and are spaced apart in the front-rear direction, and a pair of left and right side frame members 11 and 11 that extend in the vehicle width direction. A cross beam member 14 is provided, and a pair of left and right side frame members 11 and 11 and a pair of front and rear front frame members 12 and rear frame member 13 are connected to each other to form a substantially rectangular frame type vehicle body 15. Is formed.
The front frame member 12 is provided with a collision member 16 provided with an aluminum honeycomb 16A and the like that can be deformed by the action of an external force at the time of a collision on the substantially plate-shaped collision disk surface.
Further, for example, the frame members 11, 11, 12, 13 are joined to each other on the upper surface of a substantially plate-like vehicle body floor (not shown) arranged so as to close the opening of the vehicle body 15 having a substantially rectangular frame type. For example, a weight member for adjusting the weight of the vehicle collision test carriage 10, various detection devices such as a collision load sensor, a vehicle cabin, and the like are arranged as necessary.

A suspension device 20 is interposed between the vehicle body 15 and each wheel 17 of the vehicle collision test carriage 10 to suppress transmission of load fluctuations input from the road surface via the wheels 17 to the vehicle body 15. ing.
The suspension device 20 is formed of, for example, a double wishbone type suspension, and is supported by a damper bracket 21 attached to an outer surface in the vehicle width direction of the side frame member 11 of the vehicle body 15 and the damper bracket 21 so as to be swingable up and down. An upper arm 22, a front bracket 23 and a rear bracket 24 attached to the lower surface of the side frame member 11 of the vehicle body 15, a lower arm 25 supported by the front bracket 23 and the rear bracket 24 so as to be swingable up and down, A knuckle 26 connected to the outer side in the vehicle width direction of the upper arm 22 and the lower arm 25 is provided, and a wheel 29 including a hub 27 and a brake disk 28 is rotatably supported by the knuckle 26.
The knuckle 26 is joined to a plate 31 attached to the lower surface of the side frame member 11 of the vehicle body 15 via a rod 30.

A damper assembly 34 in which a damper 33 is disposed inside the suspension spring 32 is interposed between the damper bracket 21 and the lower arm 25, and a lower end of the damper assembly 34 is connected to the lower arm 25 via a fork 35. Yes.
The suspension spring 32 is interposed between the upper spring seat 32A and the lower spring seat 32B. The damper 33 has a damper outer cylinder 33A fixed to the lower spring seat 32B, and a rod 33B that is slidable with respect to the damper outer cylinder 33A and protrudes from the damper outer cylinder 33A swings to the upper spring seat 32A. Connected as possible.
In this suspension device 20, the load fluctuation input from the wheel 17 to the vehicle body 11 is sequentially transmitted to the wheel 17, the knuckle 26, the lower arm 25, the damper outer cylinder 33 </ b> A, the lower spring seat 34, the suspension spring 32, The upper spring seat 32A and the damper bracket 21 are configured.

The vehicle collision test carriage 10 according to the present embodiment has the above-described configuration. Next, a behavior during a collision test in which the vehicle collision test carriage 10 collides with the test vehicle E will be described.
For example, as shown in FIG. 5 (a), when the vehicle collision test carriage 10 is brought into front collision with the test vehicle E, the collision member 16 of the vehicle collision test carriage 10 is brought into contact with the front end of the test vehicle E from the first half of the collision. The front part of the vehicle collision test carriage 10 sinks by the suspension device 20 provided on the front wheel of the vehicle collision test carriage 10 in the middle of the collision where the collision member 16 and the front part of the test vehicle E are crushed and deformed and in the latter half of the collision. At the same time, pitching occurs as the rear portion of the vehicle collision test carriage 10 is lifted. Then, after the second half of the collision when the amount of crushing deformation of the front part of the collision member 16 and the test vehicle E becomes maximum, a repulsive force acts on the vehicle collision test carriage 10 and the test vehicle E, and the vehicle collision test carriage 10 And the test vehicle E move so as to be separated from each other, the collision ends.
In the behavior of the vehicle collision test carriage 10, in particular, the pitching that occurs from the middle of the collision to the latter half of the collision is, for example, as shown in FIG. 5B, during the frontal collision between the test vehicles E and E. The vehicle collision test carriage 10 including the suspension device 20 exhibits a behavior equivalent to pitching that occurs from the second half of the collision to the second half of the collision.

As described above, according to the vehicle collision test carriage 10 according to the present embodiment, the suspension device 20 is interposed between the vehicle body 15 of the vehicle collision test carriage 10 and each front wheel 17, for example, vehicle collision. When the test carriage 10 is pulled with a wire rope or the like and collides with the test vehicle E, it is possible to absorb the uneven state of the traveling path and ensure a desired straightness.
In addition, it is possible to accurately reproduce the behavior of pitching that occurs from the middle of the collision to the latter half of the collision even when the actual vehicles collide with each other even when the vehicle collision test carriage 10 and the test vehicle E collide.

  In the above-described embodiment, the suspension device 20 is interposed between the vehicle body 15 and each wheel 17 of the vehicle collision test carriage 10. However, the present invention is not limited to this. For example, for the test vehicle E For the vehicle collision test carriage 10 that performs only a frontal collision, a suspension device 20 is interposed between the vehicle body 15 of the vehicle collision test carriage 10 and each front wheel 17, and the vehicle collision test carriage 10 has a vehicle body. The suspension device 20 may be omitted between the rear wheel 15 and each rear wheel 17.

1 is a perspective view of a vehicle collision test carriage according to an embodiment of the present invention. FIG. 2 is a perspective view of a suspension device for the vehicle collision test carriage shown in FIG. 1. It is sectional drawing of the suspension apparatus of the vehicle collision test trolley | bogie shown in FIG. It is a disassembled perspective view of the suspension apparatus of the vehicle collision test carriage shown in FIG. FIG. 5A is a diagram illustrating a frontal collision state between test vehicles, and FIG. 5B is a diagram illustrating a frontal collision state between the test vehicle and the vehicle collision test carriage illustrated in FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle collision test truck 15 Vehicle body 20 Suspension device
32 Suspension spring (spring)
33 Damper

Claims (1)

A vehicle collision test carriage that collides with a vehicle in a predetermined direction and a predetermined speed,
A vehicle collision test carriage, wherein a wheel is mounted on a vehicle body of the vehicle collision test carriage with a suspension provided with a spring and a damper interposed therebetween.

Images