JP2021117027A - Collision test device - Google Patents

Abstract

To provide a collision test device for performing an offset front collision test of a test body having a front side member and a bumper reinforcement in consideration of rotational motion of a vehicle in offset collision of an actual vehicle and evaluating collision performance by directly observing the deformation process.SOLUTION: A collision test device 1 performs a front face collision test in which an offset front collision is conducted by colliding a collision body 3 against a front face of a test body 21 having a pair of right and left front side members 23 and a bumper reinforcement 27 connecting the front end sides thereof. The collision test device includes: a fixed wall 5 for fixing the test body 21; a rotary table 7 on which the fixed wall 5 is installed and fixed on an upper surface and which is rotatable in a horizontal plane by offset collision of the collision body 3; and a rotary support 9 for rotatably supporting the rotary table 7.SELECTED DRAWING: Figure 1

Description

The present invention relates to a collision test device, and in particular, by a collision test simulating an offset frontal collision test of an actual vehicle, directly observes the deformation process of the front side member and the bumper reinforcement, which are the body frame members at the front end portion of the automobile. The present invention relates to a collision test device for evaluating collision performance.

Usually, in a collision test of an automobile, a collision test trolley having kinetic energy at a constant speed and weight is often collided with an actual vehicle. Well-known examples of a crash test using a crash test trolley include a side collision test in which a collision test trolley with an aluminum honeycomb is made to collide with the side of the vehicle, and a collision test trolley with a rigid wall. There is a rear surface collision test in which the vehicle collides from the rear. In this way, the collision test using the crash test trolley has been established as a standard test method for evaluating the collision safety performance of commercial vehicles such as JNCAP (Japan New Car Assessment Program), and has been continuously used. There is.

On the other hand, in evaluating the collision performance of vehicle body skeleton members related to the collision safety performance of automobiles, it is said that a collision test using an actual vehicle can reproduce the phenomenon at the time of an actual collision accident with the highest accuracy. .. However, the collision test using an actual vehicle enormously requires enormous cost and man-hours, and is not optimal for repeatedly evaluating the collision performance of a single vehicle body skeleton member.

In the frontal collision test in which the front surface of the actual vehicle collides with an obstacle such as a barrier or another vehicle, the vehicle body skeleton member (front side member) of the front end portion that bears and transmits the collision load from the bumper at the front end portion of the automobile. / Frame, front bumper reinforcement, etc.) is surrounded by other drive / electrical system parts and functional parts, so it is difficult to directly observe the deformation state of the vehicle body skeleton member at the front end during the collision process.

Therefore, as the next best method for evaluating the collision performance of the vehicle body skeleton member without using an actual vehicle, for example, as disclosed in Patent Document 1, the test piece to be evaluated for the collision performance is mounted or attached to the frame. A method of accelerating the collision test trolley to collide with a collision target and measuring the state of the test object in the process of applying the total kinetic energy of the collision test trolley to the test object.

Then, according to the collision test in which the test object having the vehicle body skeleton member of the front end portion of the actual vehicle is attached to such a collision test trolley, the engine, the drive / electrical system parts, the functional system parts, etc. Since there are no built-in objects, there is an advantage that the deformation process of the vehicle body skeleton member during the collision process can be directly observed.

Japanese Unexamined Patent Publication No. 2010-190586

However, in a collision test using a collision test trolley to which a test body having a vehicle body skeleton member is attached, equipment and devices for accelerating the collision test trolley to a predetermined collision speed and traveling are required. Therefore, there is a problem that the place and time for conducting such a collision test are limited.

Therefore, as a method for easily performing a collision test of a vehicle body skeleton member without using an actual vehicle or a collision test trolley, a test body having the vehicle body skeleton member to be tested is fixed to a fixed wall, for example, made of steel. A collision test using a high-speed impact tester that collides a rigid punch at high speed can be considered. Then, by assembling and manufacturing the vehicle body skeleton members and parts of interest mainly on the bumper reinforcement, the crash box and the front side member that share and receive the collision load input at the time of a frontal collision, these vehicle bodies are manufactured. It is possible to directly observe the deformation behavior of the skeleton member in the frontal collision process and evaluate the collision performance.

In addition, when the purpose is to observe the deformation behavior of the vehicle body skeleton member and evaluate the collision performance in the offset frontal collision test in which a barrier or the like collides with a part of the vehicle body front surface of the actual vehicle, the test body fixed to the fixed wall is used. It is considered that the colliding bodies may be offset-collided.

However, in the offset frontal collision test using an actual vehicle, the central axis in the front-rear direction of the vehicle and the central axis in the collision direction with the barrier or the like deviate (offset) and collide with each other. A rotational motion occurs, and the direction of the reaction force received by the vehicle from the barrier or the like in the horizontal plane (the direction in which the collision load is input to the colliding vehicle) changes with time. Therefore, the deformation of the vehicle body skeleton member such as the front side member of the vehicle is complicated because the collision load is input in only one direction and the vehicle is compressed and deformed, and the vehicle body bends in the direction intersecting the collision direction. It will change in the process.

On the other hand, in a frontal collision test in which a test body simulating the front end of an actual vehicle is fixed to a fixed wall and a collision body such as a rigid punch is subjected to an offset collision, the test body is compressed and deformed by a collision load from the collision body. The direction was constant during the collision process, and it was not possible to reproduce the change in the direction in which the rotational motion and collision load that occur in the offset frontal collision test with the actual vehicle are input.

The present invention has been made to solve the above problems, and the collision body is offset to a test body having a front side member which is a body frame member of the front end portion of an actual vehicle and a bumper reinforcement. In conducting the frontal collision test for collision, the rotational motion in the offset frontal collision test of the actual vehicle and the accompanying change in the input direction of the collision load are reproduced in the collision process of the collision body with the test body, and the front side member and the front side member It is an object of the present invention to provide a collision test apparatus capable of directly observing the deformation behavior of the bumper reinforcement and evaluating the collision performance.

(1) The collision test apparatus according to the present invention conducts a frontal collision test by causing an offset collision of a collision body with the front surface of a test body having a pair of left and right front side members and a bumper reinforcement that connects the front end sides thereof. What to do
A fixed wall to which the test piece is fixed and
A rotary table in which the fixed wall is installed on the upper surface and can rotate in a horizontal plane by offset collision of the colliding body, and
It is characterized by having a rotary support portion that rotatably supports the rotary table.

(2) In the item described in (1) above,
The fixed wall has a position adjusting means capable of adjusting the position of the test body, and the center of a straight line connecting the front ends of the pair of left and right front side members coincides with the rotation center of the rotary table by the position adjusting means. It is characterized in that the test piece can be mounted by adjusting the position of the test piece.

(3) In the above-mentioned (1) or (2),
Further, it has a collision load receiving mechanism that receives a collision load when the colliding body has an offset collision with the test body in cooperation with the rotation support portion.
The collision load receiving mechanism is an arc-shaped arc-shaped floor surface below the rotary table, which is provided on the collision body side with respect to a virtual line drawn in the direction of movement of the collision body through the rotation center of the rotary table. It has a slot groove portion and a convex portion provided on the lower surface of the rotary table so as to project downward and the lower end portion is inserted into the slot groove portion.
The center of the arc of the slot groove coincides with the center of rotation of the rotary table.
The convex portion is characterized in that it is configured to be movable in the slot groove portion as the rotary table rotates.

(4) In the above (1) or (2),
Further, it has a collision load receiving mechanism that receives a collision load when the colliding body has an offset collision with the test body in cooperation with the rotation support portion.
The collision load receiving mechanism is on the lower surface of the rotary table, and is closer to the collision body than the virtual line drawn in the direction of movement of the collision body through the rotation center of the rotary table in the state before the rotation of the rotary table. It has an arcuate slot groove portion provided, and a convex portion provided so as to project upward on the floor surface below the rotary table and the upper end portion is inserted into the slot groove portion.
The center of the arc of the slot groove coincides with the center of rotation of the rotary table.
The convex portion is characterized in that it is configured to be movable in the slot groove portion as the rotary table rotates.

(5) In any of the above (1) to (4),
It is characterized by having a braking means for suppressing and / or stopping the rotation of the rotary table.

In the present invention, a test body having a pair of left and right front side members and a bumper reinforcement that connects the front end side thereof is fixed to a fixed wall, and the colliding body is offset-collided with the front surface of the test body to cause a front surface. A rotary table for which a collision test is performed, in which the fixed wall is installed on the upper surface and can rotate in a horizontal plane due to an offset collision of the colliding body,
By having a rotary support portion that rotatably supports the rotary table, it is possible to reproduce the rotational motion in the offset frontal collision test by the actual vehicle and the vector change of the collision load applied to the front side member and the bumper reinforcement. It is possible to directly observe the deformation behavior of the front side member and the bumper reinforcement in a state close to the offset frontal collision test by the actual vehicle, and evaluate the collision performance.

It is a top view which shows the structure of the collision test apparatus which concerns on embodiment of this invention. It is a figure explaining the rotational motion of the test piece in the offset frontal collision test by the collision test apparatus which concerns on embodiment of this invention ((a) collision start, (b) collision initial stage (deformation of bumper reinforcement and crash box). (Axial crush), (c) Late collision (deformation of front side member)).

As shown in FIG. 1, the collision test apparatus 1 according to the embodiment of the present invention performs a frontal collision test by causing an offset collision of the collision body 3 with the front surface of the test body 21 fixed to the fixed wall 5. .. Hereinafter, each configuration of the collision test apparatus 1 will be described after the test body 21 to be tested is described.

<Test specimen>
The test body 21 has a pair of left and right front side members 23 extending in the front-rear direction, a crash box 25 connected to the front end of the front side member 23, and a pair of left and right members extending in the width direction via the crash box 25. It has a bumper reinforcement 27 that connects the front end side of the front side member 23 of the vehicle, and simulates the front end portion of an actual vehicle.

The vehicle body skeleton members and parts used for the test body 21 can be arbitrarily selected, but the front side member 23 and the bumper reinforcement 27, which are the routes for transmitting the collision load to the cabin in the frontal collision test using the actual vehicle, are the minimum. I need.

Further, the test body 21 preferably has a crash box 25 attached to the front end of the front side member 23, but does not necessarily require the crash box 25.
Further, the test body 21 can be provided with peripheral parts such as an apron, an upper member, and a suspension tower (spring house) as needed.

<Crash test equipment>
As shown in FIG. 1, the collision test apparatus 1 according to the embodiment of the present invention performs a frontal collision test of the test body 21 by causing the collision body 3 to offset collide with the test body 21 and performs a frontal collision test of the test body 5. The rotary table 7 and the rotary support portion 9 are provided.

≪Collision body≫
As shown in FIG. 1, the colliding body 3 has an offset collision with the front surface of the test body 21, and for example, a rigid body punch driven by an injection device (not shown) can be used.

As the injection device, a device that uses hydraulic pressure, gas pressure, or the like to drive the collision body 3 is suitable, and the collision body 3 can be ejected and moved in the horizontal direction at a collision speed equivalent to the frontal collision test of the actual vehicle. If so, there are no particular restrictions.

≪Fixed wall≫
The test body 21 is fixed to the fixed wall 5, and in the present embodiment, the test body 21 is fixed by attaching the rear end side of the front side member 23 of the test body 21 to the front surface of the fixed wall 5. can do. As the fixed wall 5, for example, a steel structure or the like can be used.

The fixed wall 5 has a position adjusting means capable of adjusting the position of the test body 21, and the position adjusting means of the straight line L ₁ connecting the front ends of the pair of left and right front side members 23 in the state before the offset collision. It is preferable that the test body 21 can be mounted by adjusting the position of the test body 21 so that the center coincides with the rotation center C of the rotary table 7.

As such a position adjusting means, for example, a guide groove is provided on the upper surface of the rotary table 7, a moving mechanism for moving the fixed wall 5 along the guide groove, or a test piece provided on the front surface of the fixed wall 5. There is a position adjusting mechanism for adjusting the position of 21, and the like, but the specific mode of the position adjusting means is not particularly limited.

≪Rotating table≫
The rotary table 7 has a fixed wall 5 installed on the upper surface and can rotate in a horizontal plane due to an offset collision of the colliding body 3 with the test body 21 fixed to the fixed wall 5, and is installed above the floor surface 31. Has been done.

≪Rotation support part≫
The rotary support portion 9 rotatably supports the rotary table 7, and is embedded in the floor surface 31 with the upper portion 9a protruding. Further, in order to make the rotation of the rotary table 7 smooth, a cylindrical roller bearing 9b is provided between the upper portion 9a of the rotary support portion 9 and the rotary table 7.

FIGS. 1 and 2 show the operation of the collision test device 1 and its action and effect when the collision body 3 is offset-collided with the test body 21 using the collision test device 1 configured as described above to perform a frontal collision test. Will be explained with reference to.

First, as shown in FIG. 1, a fixed wall 5 is installed on the upper surface of the rotary table 7, and the rear end side of the front side member 23 of the test body 21 simulating the front end portion of the vehicle is attached to the front surface of the fixed wall 5. ..

_{Then, the central axis X 1 in} the front-rear direction of the test body 21 and the central axis X _{2 in} the motion direction of the colliding body 3 are offset in the horizontal plane in the left-right direction of the test body 21 to drive the colliding body 21 to drive the test body 21. (Fig. 2 (a)).

After the collision, the colliding body 3 invades the inside of the test body 21, and the test body 21 is elastically or plastically deformed to generate a reaction force in the direction of movement of the colliding body 3, and a moment force is applied to the test body 21 and the rotary table 7. (Collision moment) is generated. Since the rotary table 7 is rotatably supported in the horizontal plane by the rotary support portion 9, the rotary table 7 rotates in the horizontal plane with the plastic deformation of the test body 21 (FIGS. 2B to 2C). Then, the rotational movement of the rotary table 7 changes the input direction of the collision load by the collision body 3 to the test body 21.

Here, in the initial stage of the collision, an inertial force due to the weight of the test body 21, the fixed wall 5, and the rotary table 7 acts, and particularly in the process of plastic deformation and axial crushing of the crash box 25 under a low load, the collision occurs. The contribution of the rotational moment due to the invasion of the body 3 into the test body 21 is small, and the contribution of the plastic deformation of the test body 21 in the direction of movement of the colliding body 3 is large (FIG. 2B).

Subsequently, when the colliding body 3 further invades the inside of the test body 21 and reaches the front end of the front side member 23, the reaction force on the colliding body 3 rapidly increases, so that the rotational moment also increases, and the rotary table 7 and the test body The rotational motion in the horizontal plane of 21 is increased (FIGS. 2 (b) to (c)). As a result, the front side member 23 may bend in a direction intersecting the motion direction of the colliding body 3.

Then, after the collision body 3 reaches a predetermined intrusion position, or after the rotation speeds of the test body 21 and the rotary table 7 reach the same speed as the collision body 3, the reaction force to the collision body 3 decreases. At the same time, the plastic deformation of the test piece 21 is stopped, and the collision process is completed (FIG. 2 (c)).

As described above, in the collision test apparatus 1 according to the present embodiment, since the rotary table 7 and the test body 21 are made to rotate due to the offset collision of the collision body 3, the rotation of the vehicle in the offset frontal collision test by the actual vehicle is performed. The motion can be reproduced and the deformation process of the test body 21 can be directly observed, and the collision performance can be evaluated.

In the offset frontal collision test of the actual vehicle, in the vehicle that collided with the barrier, the bumper reinforcement flattened and the crash box crushed, and then the test vehicle collided with the inside of the barrier test vehicle in the width direction. In many cases, the corner portion is used as the center of rotation for rotational movement.

_{Therefore, in the collision test apparatus 1, the test body 21 is attached to the fixed wall 5 so that the center of the straight line L 1} connecting the front ends of the pair of left and right front side members 23 coincides with the rotation center C of the rotary table 7. .. As a result, the collision test device 1 is preferable because it can satisfactorily reproduce the rotational motion in the offset frontal collision test by the actual vehicle and perform the frontal collision test of the test body 21.

Further, the rotation support portion 9 preferably has a structure capable of withstanding a collision load (for example, 100 to 500 kN) generated by the collision of the colliding body 3.
However, the collision test apparatus 1 shown in FIGS. 1 and 2 applies a collision load in a direction orthogonal to the axial direction of the rotation support portion 9, which may be generated on the rotation table 7 due to the collision of the collision body 3, to the rotation support portion 9. The collision load receiving mechanism 11 which receives the collision load in cooperation with the above may be provided.

≪Collision load receiving mechanism≫
As shown in FIGS. 1 and 2, the collision load receiving mechanism 11 has a slot groove portion 13 and a convex portion 15.

The slot groove portion 13 is a floor surface 31 below the rotary table 7, and has an arc shape on the collision body 3 side with _{respect to the virtual line L 2} drawn in the motion direction of the collision body 3 through the rotation center C of the rotary table 7. It is provided, and the center of the arc coincides with the rotation center C of the rotary table 7.

The convex portion 15 is provided on the lower surface of the rotary table 7 so as to project downward, and the lower end portion is inserted into the slot groove portion 13 so as to be movable in the slot groove portion 13 as the rotary table 7 rotates. Yes (see FIGS. 2 (b)-(c)).

As described above, in the collision test apparatus 1, by further having the collision load receiving mechanism 11, it is not necessary to receive the collision load only by the rotation support portion 9, so that the structure of the rotation support portion 9 is simplified. Make it possible. Further, it is possible to assist the smooth rotation of the rotary table 7 due to the offset collision of the colliding body 3.

The slot groove portion 13 may have, for example, an arc angle of about 45 degrees, and the position and range in which the slot groove portion 13 is provided, the structure of the convex portion 15, and the like may be determined by collision conditions (collision load and rotational motion due to collision). Etc.), it may be set appropriately.

In the above description, the collision load receiving mechanism 11 has a slot groove portion 13 provided on the floor surface 31 and a convex portion 15 provided on the lower surface of the rotary table 7. However, the present invention is an arc-shaped lower surface of the rotary table, which is provided on the collision body side with respect to a virtual line drawn in the direction of movement of the collision body through the rotation center of the rotary table in the state before the rotation of the rotary table. It may have a collision load receiving mechanism having a slot groove portion and a convex portion provided so as to project upward on the floor surface below the rotary table and the upper end portion is inserted into the slot groove portion ( Not shown).

Further, even in such a collision load receiving mechanism, the center of the arc of the slot groove portion coincides with the rotation center of the rotary table, and the rotary table is configured to be movable with the rotation while including the convex portion in the slot groove portion. It is assumed that it has been done. Then, the position and range of the slot groove portion, the structure of the convex portion, and the like may be appropriately set according to the collision conditions.

Further, in the collision test apparatus according to the present invention, in order to support the vertical load of the rotary table, the fixed wall and the test piece and realize smooth rotation of the rotary table, the tip of the convex portion, the lower surface of the rotary table or the lower surface of the rotary table or A slide mechanism such as a roller bearing may be provided on the floor surface.

Further, it is preferable that the collision test apparatus according to the present invention further includes a braking means for suppressing and / or stopping the rotation of the rotary table by an electromagnetic brake or a friction type brake. This makes it possible to reproduce the rotary motion of the rotary table and the test body due to the offset collision of the collision body 3 closer to the rotary motion in the offset frontal collision test of the actual vehicle, and also to reproduce the rotary table after the collision process is completed. It can be stopped reliably.
Such braking means can be provided in either one or both of the rotation support portion and the slot groove portion, and if it has a braking force capable of stopping the rotational movement of the rotary table, its structure and mechanism. There are no particular restrictions on such matters.

An example and method of a specific configuration for directly observing the collision process of the collision body 3 with the test body 21 and the deformation process of the test body 21 by the collision test device 1 according to the present embodiment will be described later. Will be explained in.

As a specific example of the collision test apparatus according to the present invention, a case of observing a deformation process in an offset frontal collision test of a vehicle body skeleton member of a front end portion assuming a small passenger vehicle will be described below with reference to FIG. do.

First, as a target of the collision test, a test body 21 simulating the front end portion of a small passenger car was produced.
For the test body 21, we obtained commercially available spare parts for repair of the front bumper assembly (bumper reinforcement 27 and crash box 25) and the front side member assembly on the left side (LH side) and right side (RH side) of the vehicle body. Those assembled by spot welding and arc welding were used. Here, as the front side member 23 of the test body 21, only the front side straight portion of the front side member assembly was cut off. Then, a tab plate was arc-welded to the cut surface of the cut front side member 23 to form a bolt attachment portion to the fixed wall 5.

Next, the prepared test body 21 was attached to the fixed wall 5 of the collision test device 1.
The fixed wall 5 was made of a combination of shaped steel and installed on the upper surface of the rotary table 7. Here, the position of the fixed wall 5 was adjusted so that the center of the straight line connecting the front ends of the pair of left and right front side members 23 in the test body 21 coincided with the rotation center C of the rotary table 7.

The rotary table 7 was rotatably supported by the rotary support portion 9 using a thick plate (plate thickness 150 mm) equivalent to SS400.
The rotation support portion 9 was embedded in the floor surface 31 by using a structural steel pipe (φ190 mm, wall thickness 8.0 mm) so that the upper portion 9a protrudes.

An arcuate slot groove portion 13 is provided on the floor surface 31 below the rotary table 7, a convex portion 15 projecting downward is provided on the lower surface of the rotary table 7, and the convex portion 15 is slotted as the rotary table 7 rotates. The groove portion 13 is moved.

Then, by providing a cylindrical roller bearing 9b on the upper portion 9a of the rotation support portion 9 and further providing a roller bearing (not shown) on the convex portion 15, the rotation of the rotary table 7 and the convex portion 15 in the slot groove portion 13 are provided. The slide is made smooth.

Further, on the floor surface 31 below the rotary table 7, a slide mechanism using roller bearings is appropriately installed in order to smoothly rotate the rotary table 7 in the horizontal plane while supporting the rotary table 7 from below.

The collision body 3 is made of steel and weighs 500 kg (collision surface dimensions W600 mm × H250 mm), and the layout of the collision body 3 is a position offset by 300 mm to the right in the width direction from _{the central axis X 1 in the front-rear direction of the test body 21. Is the central axis X 2 in the} direction of movement of the colliding body 3.

Then, the colliding body 3 was made to collide with the front surface of the test body 21 fixed to the fixed wall 5. In this embodiment, the collision speed of the colliding body 3 is 54 km / h.

Then, high-speed cameras having a plurality of fields of view were arranged above and to the side of the collision point (not shown), and the deformation state of the test body 21 before and after the collision was photographed and recorded by the high-speed camera.

As described above, according to this embodiment, it was possible to reproduce the rotational motion of the actual vehicle in the offset frontal collision test by the actual vehicle, directly observe the deformation process of the test body, and evaluate the collision performance.
Further, in this embodiment, for example, among the test bodies 21, the front side member 23 was replaced with a prototype by changing the material, and the influence of the material on the collision performance of the front side member 23 could be evaluated. Furthermore, it was possible to evaluate the influence of the material on the collision performance by changing the material on the offset collision side of the front side member 23 and changing a part of the material of the front side member 23. Further, among the test bodies 21, the bumper reinforcement 27 and the crash box 25 could be evaluated by changing the materials like the front side member 23.

1 Collision test equipment 3 Collision body 5 Fixed wall 7 Rotating table 9 Rotating support part 9a Upper 9b Roller bearing 11 Collision load receiving mechanism 13 Slot groove part 15 Convex part 21 Specimen 23 Front side member 25 Crash box 27 Bumper reinforcement 31 Floor Surface C Rotation center L ₁ Straight line connecting the front ends of the front side members L ₂ Virtual line X ₁ Front-rear direction center axis of the test piece X ₂ Motion direction center axis of the colliding body

Claims (5)

A collision test device that performs a frontal collision test by offset-colliding a collision body with the front surface of a test body having a pair of left and right front side members and a bumper reinforcement that connects the front end sides thereof.
A fixed wall to which the test piece is fixed and
A rotary table in which the fixed wall is installed on the upper surface and can rotate in a horizontal plane by offset collision of the colliding body, and
A collision test apparatus comprising a rotary support portion that rotatably supports the rotary table. The fixed wall has a position adjusting means capable of adjusting the position of the test body, and the center of a straight line connecting the front ends of the pair of left and right front side members coincides with the rotation center of the rotary table by the position adjusting means. The collision test apparatus according to claim 1, wherein the test piece can be mounted by adjusting the position of the test piece. Further, it has a collision load receiving mechanism that receives a collision load when the colliding body has an offset collision with the test body in cooperation with the rotation support portion.
The collision load receiving mechanism is an arc-shaped arc-shaped floor surface below the rotary table, which is provided on the collision body side with respect to a virtual line drawn in the direction of movement of the collision body through the rotation center of the rotary table. It has a slot groove portion and a convex portion provided on the lower surface of the rotary table so as to project downward and the lower end portion is inserted into the slot groove portion.
The center of the arc of the slot groove coincides with the center of rotation of the rotary table.
The collision test apparatus according to claim 1 or 2, wherein the convex portion is configured to be movable in the slot groove portion as the rotary table rotates. Further, it has a collision load receiving mechanism that receives a collision load when the colliding body has an offset collision with the test body in cooperation with the rotation support portion.
The collision load receiving mechanism is on the lower surface of the rotary table, and is closer to the collision body than the virtual line drawn in the direction of movement of the collision body through the rotation center of the rotary table in the state before the rotation of the rotary table. It has an arcuate slot groove portion provided, and a convex portion provided so as to project upward on the floor surface below the rotary table and the upper end portion is inserted into the slot groove portion.
The center of the arc of the slot groove coincides with the center of rotation of the rotary table.
The collision test apparatus according to claim 1 or 2, wherein the convex portion is configured to be movable in the slot groove portion as the rotary table rotates. The collision test apparatus according to any one of claims 1 to 4, further comprising a braking means for suppressing and / or stopping the rotation of the rotary table.

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