JP5627407B2 - Vehicle crash simulation test equipment - Google Patents

Description

  The present invention relates to an automobile collision simulation test apparatus that reproduces the acceleration generated in a passenger compartment at the time of a collision without destroying the automobile and reproduces the degree of injury of a passenger due to a secondary collision.

  In general, the crash test of automobiles is an actual vehicle crash test for evaluating physical quantities such as crash amount and remaining space in passenger cabins and occupant injury values, but a method of placing a dummy on an actual vehicle and causing it to collide with a barrier at a predetermined speed. Is a destructive test and is very expensive. For this reason, a white body with a dummy or airbag, a simulated vehicle body, etc. are mounted on the carriage, and the impact acting on the specimen is nondestructive by giving the carriage almost the same acceleration as the actual vehicle collision. A car crash simulation test is conducted to evaluate the occupant injury value in a realistic manner and develop a safety device such as an air bag.

  Examples of such an automobile collision simulation test apparatus include those described in Patent Documents 1 and 2 below. In the load test method described in each patent document, a dummy is seated by fixing a seat on a thread, and a toe board on which the leg of the dummy is placed is rotatably supported on a toe board support base, and a hydraulic cylinder ( The front side can be tilted up and down by a toe board drive device, and the toe board support base is slidably supported by a guide member and can be moved back and forth by a hydraulic cylinder (toe board drive device). Therefore, when performing an intrusion test of an automobile, the toe board drive device is controlled based on actual automobile collision data to tilt and move the toe board.

JP 2002-062230 A US Pat. No. 7,415,903

  In the conventional automobile collision simulation test apparatus described above, the seat is fixed on the sled and the dummy is seated, and the toe board is supported so as to be movable and rotatable in front of it, and the toe board driving device is mounted. Yes. This toe board drive device is composed of two hydraulic cylinders, a pump, an accumulator, and the like, and has a very heavy structure. Therefore, the weight balance is lost due to the arrangement of the hydraulic cylinder, pump, accumulator, etc. on the sled, and the sled may behave differently from the actual collision during a car crash simulation test, which may reduce reproducibility. .

  The present invention solves the above-described problems, and an object thereof is to provide an automobile collision simulation test apparatus that can improve reproducibility.

  In order to achieve the above object, an automobile collision simulation test apparatus according to the present invention includes a sled that is movably supported along a horizontal front-rear direction and can mount a specimen, and a horizontal left-right direction at the front of the sled A toe board that is rotatably supported by an axis along the axis, and an acceleration device that applies acceleration to the toe board, and the toe board and the acceleration device so that a center position in the left-right direction of the sled is a center of gravity position These structural members are arranged.

  Therefore, by arranging the components of the toe board and the acceleration device so that the center position in the left-right direction is the center of gravity position on the sled, the balance is not lost when the sled is moved, and it is reproduced in the automobile collision simulation test. Can be improved.

  In the automobile collision simulation test apparatus according to the present invention, the acceleration device includes a fluid cylinder, an accumulator communicating with the fluid cylinder, and a storage tank that stores fluid discharged from the fluid cylinder. The fluid cylinder is disposed on one side of the sled in the left-right direction, and the accumulator and the storage tank are disposed on the other side of the sled in the left-right direction.

  Therefore, by arranging the toe board and the fluid cylinder, the accumulator and the storage tank on the left and right of the sled, the right and left balance of the sled can be easily set appropriately.

  In the automobile collision simulation test apparatus of the present invention, the specimen is a white body, the toe board and the fluid cylinder are disposed on the driver seat side of the white body, and the accumulator and the storage tank are disposed on the passenger seat side. It is characterized by that.

  Therefore, the left / right balance of the sled can be set appropriately regardless of the arrangement of the driver seat and the passenger seat.

  According to the automobile collision simulation test apparatus of the present invention, the toe board and the acceleration device are arranged so that the center position in the left-right direction of the sled is the center of gravity, so that the balance is not lost when the sled is moved. The reproducibility in the collision simulation test can be improved.

FIG. 1 is a side view showing an automobile collision simulation test apparatus according to an embodiment of the present invention. FIG. 2 is a plan view showing the automobile collision simulation test apparatus of this embodiment. FIG. 3 is a schematic side view showing an intrusion test apparatus in the automobile collision simulation test apparatus of the present embodiment. FIG. 4 is a schematic plan view showing an intrusion test apparatus in the automobile collision simulation test apparatus of the present embodiment.

  Exemplary embodiments of an automobile collision simulation test apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. In addition, this invention is not limited by this Example.

  FIG. 1 is a side view showing an automobile collision simulation test apparatus according to an embodiment of the present invention, FIG. 2 is a plan view showing the automobile collision simulation test apparatus of this embodiment, and FIG. 3 is an automobile collision of this embodiment. FIG. 4 is a schematic plan view showing the intrusion test apparatus in the automobile collision simulation test apparatus of this embodiment. FIG. 4 is a schematic side view showing the intrusion test apparatus in the simulation test apparatus.

  In the automobile collision simulation test apparatus of the first embodiment, as shown in FIGS. 1 and 2, the thread 15 is a frame material having a plate material having a predetermined thickness, and the plan view is a front-rear direction (FIGS. 1 and 2). In the left and right direction), a long rectangular shape is formed. A pair of left and right rails 13a and 13b are attached to the floor surface 12 with a predetermined interval along the front-rear direction, and the sled 15 is attached to the rails 13a and 13b via sliders 14a and 14b fixed to the lower surface. It is supported so that it can move back and forth along.

  Moreover, the thread | sled 15 can mount the test body 16 on the upper surface. In this embodiment, the specimen 16 is an automobile having only a skeleton, that is, a so-called white body, and is equipped with equipment such as a seat 16a, a steering wheel 16b, an airbag 16c, and a dummy 16d. Yes. The specimen 16 is placed at a predetermined position in the sled 15 and is fixed by a fixture (not shown).

  Here, the specimen 16 is a white body and includes a seat 16a, a steering wheel 16b, an airbag 16c, and a dummy 16d. Sometimes referred to as a specimen.

  In this embodiment, since the specimen 16 is mounted on the sled 15, the front of the automobile that is the specimen 16 (leftward in FIGS. 1 and 2) is the front of the sled 15. The description will be made assuming that the rear of the automobile which is the specimen 16 (the right direction in FIGS. 1 and 2) is the rear of the sled 15. Further, the side of the automobile as the specimen 16, that is, the left and right direction (upward and downward directions in FIGS. 1 and 2) will be described as the side of the thread 15, that is, the left and right direction.

  In the vehicle collision simulation test apparatus of the present embodiment, a launch device 17 as a sled acceleration device that applies a backward acceleration to the sled 15 is installed on the floor 12 on the front side of the sled 15. This launching device 17 has a piston 17a that is driven out toward the sled 15 side by hydraulic control (or pneumatic control, friction control, etc.). Therefore, the launching device 17 can give a rearward impact force, that is, acceleration to the thread 15 by striking the piston 17a in a state where the tip of the piston 17a is in contact with the front end of the thread 15. That is, applying the rear acceleration to the sled 15 by the launching device 17 has the same form as receiving the rear acceleration when the specimen 16 on the sled 15 collides with the front, and generates a simulated car collision. Can do.

  In addition, an intrusion device 21 is provided in front of the specimen 16 at the front portion on the sled 15. As shown in FIGS. 3 and 4, the intrusion device 21 includes a toe board 22 and a launching device 23 as a toe board acceleration device. The launcher 23 includes a hydraulic cylinder (fluid cylinder) 24, an accumulator 25, and a storage tank 26.

  That is, a mounting base 31 is fixed on the thread 15, and a support shaft 33 is attached to the mounting base 31 by a bracket 32. The support shaft 33 is disposed along the horizontal left-right direction orthogonal to the front-rear direction, which is the moving direction of the sled 15.

  The toe board 22 has a plate shape in which an intermediate portion is bent at a predetermined angle, and an intermediate portion serving as a bent portion is rotatably supported by a support shaft 33. The toe board 22 has an inclined portion 22a on the front side of the sled 15 and a horizontal portion 22b on the rear side of the sled 15, and the sloping portion 22a and the horizontal portion 22b are connected to each other at an intermediate portion. It has become. The inclined portion 22 a extends from the intermediate portion (support shaft 33) to the front upper side of the thread 15 and is set at a predetermined angle with respect to the upper surface of the thread 15. On the other hand, the horizontal portion 22 b extends from the intermediate portion (support shaft 33) to the rear side of the thread 15 and is set substantially parallel to the upper surface of the thread 15.

  On the sled 15, a launching device 23 is disposed in front of the toe board 22. This launching device 23 is capable of hydraulic control (or pneumatic control, friction control, etc.). The hydraulic cylinder 24 has a piston 24a that is driven out toward the toe board 22 by being hydraulically controlled. The hydraulic cylinder 24 is connected to a fixed block 34 whose base end is fixed on the sled 15 by a connecting pin 35 so that the tip of the piston 24 a is connected to the tip of the inclined portion 22 a of the toe board 22. The connecting pins 36 are rotatably connected.

  The accumulator 25 can store high-pressure oil inside by a hydraulic pump (not shown). The hydraulic cylinder 24 is divided into two front and rear chambers by a piston 24 a, and the accumulator 25 is connected to the rear chamber by a pipe 37. The storage tank 26 can collect the oil discharged after the hydraulic cylinder 24 is actuated. The storage tank 26 is connected to the front chamber of the hydraulic cylinder 24 by a pipe 38, and a servo valve 39 is provided between the pipe 38 and the front chamber of the hydraulic cylinder 24.

  Therefore, with the servo valve 39 closed, oil is supplied to the accumulator 25 by the hydraulic pump, the accumulator 25, the pipe 37, and the rear chamber (front chamber) of the hydraulic cylinder 24 are in a predetermined high pressure state, and the hydraulic pump is removed. When the servo valve 39 is opened in this state, the oil in the front chamber of the hydraulic cylinder 24 is collected in the storage tank 26 through the pipe 38, so that the piston 24a can be driven forward (toe board 22 side).

  Therefore, the launching device 23 can give an impact force, that is, an acceleration that rotates backward with respect to the toe board 22 by striking the piston 24a of the hydraulic cylinder 24. In other words, the launching device 23 can apply a rotational force to the toe board 22 such that the tip of the inclined portion 22a moves rearward and the tip of the horizontal portion 22b moves downward.

  The launching device 23 operates simultaneously when applying the backward acceleration to the sled 15 by the launching device 17 and applies the backward acceleration to the toe board 22. That is, when the acceleration is applied to the sled 15 by the launching device 17 and when the specimen 16 on the sled 15 receives a rearward acceleration when the front collision occurs, the launching device 23 imparts the acceleration to the toe board 22, thereby The upper toe board 22 has a form similar to that of receiving a rear acceleration (deformation) due to a frontal collision, and can simulate a car collision.

  In this case, the constituent members of the toe board 22 and the launching device 23 are arranged in the intrusion device 21 so that the center position C in the left-right direction of the sled 15 is the center of gravity. Constituent members of the launching device 23 include at least a hydraulic cylinder 24, an accumulator 25, and a storage tank 26. The toe board 22 and the hydraulic cylinder 24 are disposed on one side of the sled 15 in the left-right direction (upper side in FIG. 4), and the accumulator 25 and the storage tank 26 are disposed on the other side of the sled 15 in the left-right direction (lower side in FIG. 4). ).

  In this embodiment, a white body is mounted on the sled 15 as the specimen 16, the toe board 22 and the hydraulic cylinder 24 are arranged on the driver seat side of the white body, and the accumulator 25 and the passenger seat side. A storage tank 26 is arranged.

  Here, the operation of the above-described automobile collision simulation test apparatus of the present embodiment will be described.

  When an automobile collision test is performed by the automobile collision simulation test apparatus of this embodiment, design changes (weight, center of gravity, etc.) of the sled 15 and toe board 22 and the acceleration change with respect to the collision time obtained in the actual vehicle collision test in advance. The launch force of the pistons 17a and 24a in the launching devices 17 and 23 and the position of the specimen 16 on the sled 15 are set to predetermined values so that the temporal change (waveform) of this acceleration can be reproduced from each data. .

  First, as shown in FIG. 1 to FIG. 4, the launch device 17 is hydraulically controlled to strike the piston 17 a, and the target longitudinal acceleration (rear in the sled 15, the specimen 16 behind the sled 15 in the stopped state). Acceleration), and an acceleration simulating a collision is given to the specimen 16. Then, the sled 15 moves backward by a predetermined distance with the given target longitudinal acceleration.

  Further, by simultaneously controlling the launching device 23 of the intrusion device 21 simultaneously with the launching device 17, the piston 24 a of the hydraulic cylinder 24 is launched, and the target longitudinal acceleration (rear acceleration in the toeboard 22) with respect to the toe board 22 in a stopped state. And acceleration to simulate the time of collision is given to the toe board 22. Then, the toe board 22 rotates backward by a predetermined angle with the given target longitudinal acceleration.

  As described above, in the automobile collision simulation test apparatus according to the present embodiment, the sled 15 on which the specimen 16 can be mounted is supported so as to be movable along the horizontal front-rear direction, and the toe board 22 is attached to the front portion of the sled 15. The torboard 22 and the launching device 23 are configured such that the launching device 23 can support the torboard 22 with acceleration, and the center position C in the left-right direction of the sled 15 is the center of gravity. Is arranged.

  Therefore, by arranging the constituent members of the toe board 22 and the launching device 23 on the sled 15 so that the center position C in the left-right direction is the center of gravity position, the balance is not lost when the sled 15 is moved, and the vehicle collision The reproducibility in the simulation test can be improved.

  In the automobile collision simulation test apparatus of this embodiment, as the launching device 23, a hydraulic cylinder 24, an accumulator 25 communicating with the hydraulic cylinder 24, and a storage tank 26 for storing fluid discharged from the hydraulic cylinder 24 are provided. The toe board 22 and the hydraulic cylinder 24 are arranged on one side of the sled 15 in the left-right direction, and the accumulator 25 and the storage tank 26 are arranged on the other side of the sled 15 in the left-right direction. Therefore, by arranging the toe board 22 and the hydraulic cylinder 24, the accumulator 25 and the storage tank 26 on the left and right of the sled 15, the weight balance on the left and right of the sled 15 can be easily set appropriately.

  Further, in the automobile collision simulation test apparatus of this embodiment, the specimen 16 is a white body, the toe board 22 and the hydraulic cylinder 24 are disposed on the driver seat side of the white body, and the accumulator 25 and the storage tank 26 are disposed on the passenger seat side. ing. Therefore, regardless of the arrangement of the driver seat and the passenger seat, the weight balance between the left and right of the sled 15 can be set appropriately.

  In the automobile collision simulation test apparatus of this embodiment described above, the toe board 22 and the hydraulic cylinder 24 are disposed on the right side of the sled 15 by using the right side of the white body as the driver seat and the left side as the passenger seat. The accumulator 25 and the storage tank 26 are disposed on the left side of the white body. However, when the left side of the white body is the driver's seat and the right side is the passenger seat, the toe board 22 and the hydraulic cylinder 24 are disposed on the left side of the sled 15. In this case, the accumulator 25 and the storage tank 26 may be arranged.

  Further, in the automobile collision simulation test apparatus of the above-described embodiment, the toe board 22 and the hydraulic cylinder 24 are arranged on one side of the sled 15 and the accumulator 25 and the storage tank 26 are arranged on the other side of the sled 15. However, this combination is limited. Is not to be done. That is, the right and left weight balance in the sled 15 is the weight of the constituent members of the toe board 22 and the launching device 23 and the distance from the center position C. By adjusting this distance, the most appropriate combination can be selected. That's fine.

  Further, in the intrusion device 21, the tip of the piston 24 a of the hydraulic cylinder 24 in the launching device 23 is connected to the toe board 22. However, like the launching device 17, the tip of the piston 24 a is abutted against the toe board 22. May be.

  The automobile collision simulation test apparatus according to the present invention can improve the reproducibility of the automobile collision simulation test by arranging the components of the toe board and the acceleration device so that the center position in the left-right direction of the sled is the center of gravity position. Therefore, the present invention can be applied not only to a normal frontal collision thread in which the sled is accelerated or decelerated in one direction, but also to any automobile collision simulation test apparatus such as a pitching thread or a yawing thread that involves rotational movement.

12 Floor 15 Thread 16 Specimen 17 Launcher (Thread Accelerator)
21 intrusion device 22 toe board 23 launching device (toe board acceleration device)
24 Hydraulic cylinder 25 Accumulator 26 Storage tank 33 Support shaft 37, 38 Piping 39 Servo valve

Claims (2)

A thread that is supported so as to be movable along a horizontal front-rear direction and can be loaded with a specimen;
A toe board that is rotatably supported by an axial center along the horizontal left-right direction at the front of the sled;
An acceleration device for applying acceleration to the toe board;
With
The toe board and the components of the acceleration device are arranged so that the center position in the left-right direction of the sled is the center of gravity position ,
The acceleration device includes a fluid cylinder, an accumulator that communicates with the fluid cylinder, and a storage tank that stores fluid discharged from the fluid cylinder, and the toe board and the fluid cylinder are in one of the left and right directions of the sled. Arranged on the side, the accumulator and the storage tank are arranged on the other side in the left-right direction of the sled,
An automobile collision simulation test apparatus characterized by that. The specimen is white body, are the toe board and arranged the fluid cylinder on the driver's seat side of the white body, to claim 1, wherein the accumulator and the holding tank on the passenger seat side are disposed The vehicle collision simulation test apparatus described.

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