JP2017020840A - Thread testing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thread testing device capable of simulating oblique collision at various collision angles.SOLUTION: A thread 1 is slidably installed on a rail 2 via a slider 3. On the thread 1, a base plate 4 is fixed and installed and a white body 20 is fixed thereon in an orientation direction changeable fashion. With the white body 20, plates 21 to 23 are provided that hangs out from front to back and side to side and arc-like long holes 25 to 34 are provided therewith. A plurality of female screw holes 5 to 15 are provided with the base plate 4. The white body 20 is fixed by tightening bolts 40 passed through the long holes 25 to 34 into the female screw holes 5 to 15, respectively.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a sled test apparatus for performing a simulated collision test of an automobile, and more particularly to a sled test apparatus capable of performing an oblique collision (oblique collision) test.

  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. Is a destructive test and requires very high costs. For this reason, a white body equipped with a dummy or airbag is mounted on the sled, and the impact acting on the white body is measured non-destructively by giving the sled almost the same acceleration as when an actual vehicle collides. Car crash simulation test is performed.

  As a sled test apparatus for performing such an automobile collision simulation test, Patent Document 1 discloses that a white body is fixed to a sled that can slide on a rail ("Cart" in Patent Document 1), and the sled is driven out by a launching device. Is described. Patent Document 1 does not describe performing an oblique collision test.

  Patent Document 2 describes that a yawing sled is installed on a sled so as to be able to turn horizontally by a rotation axis, a white body is fixedly installed on the yawing sled, and a white body is offset on the yawing sled. ing. This Patent Document 2 tests an offset collision, and a structure for testing an oblique collision is not described in Patent Document 2.

  A sled test apparatus for testing a small overlap collision (offset collision) is also described in Patent Document 3. However, Patent Document 3 does not describe a configuration for testing an oblique collision.

JP 2002-162313 A JP2011-163976A JP2011-164100

  An object of the present invention is to provide a sled test apparatus that can simulate oblique collision at various collision angles.

  A sled test apparatus according to the present invention includes a sled that is movable along a rail, a base plate that is installed on the sled, and a white body that is disposed on the base plate so that the direction of orientation can be changed. The white body is provided with plates that project to the front side, the rear side, and the left and right sides, and each plate has an arc shape extending in an equiradial position with respect to a point near the center of the white body. The base plate is provided with a female screw hole at a position overlapping with the long hole, and the white body is fixed to the base by a bolt tightened into the female screw hole through the long hole. It is characterized by being fixed to a board.

  It is preferable that the plates on the left and right sides of the white body are provided only in the middle of the longitudinal direction of the sides.

  Preferably, the front plate, the rear plate, and the left and right plates are each provided with a plurality of long holes having different radial positions from the point.

  In the sled test apparatus of the present invention, the white body is attached to the base plate fixed to the sled. A plate is provided on the white body so as to protrude in the front-rear direction and the left-right direction, and an arc-shaped long hole is provided in the plate. After setting the white body directing direction to a desired direction, the white body can be fixed in a desired direction by screwing a bolt into the female screw hole of the base plate through the long hole. Therefore, oblique collision tests at various collision angles can be performed.

  By providing a plate that protrudes from the left and right sides of the white body only in the middle of the side of the white body, the width of the white body in the direction perpendicular to the rail may be excessive when the white body is oriented obliquely. Is prevented.

(A) The figure is a side view which shows the thread | sled test apparatus based on Embodiment, (b) The figure is a side view of the white body of a motor vehicle. It is a top view of a base board. It is a block diagram of the lower part of a white body, and is an AA arrow line view of FIG. It is a top view of the state which installed the white body on the base board. It is a top view which shows the thread | sled test apparatus which concerns on another embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

  The thread 1 has a rectangular shape that is long in the front-rear direction in plan view. As shown in FIG. 1A, a pair of left and right rails 2 are laid in the front-rear direction at a predetermined interval on the floor surface of the collision test chamber. The sled 1 is supported so as to be movable along the rail 2 via a slider 3 fixed to the lower surface.

  The base plate 4 is made of a plate material having a predetermined thickness, and has a rectangular shape that is long in the front-rear direction in plan view. The base plate 4 has substantially the same length and width in the front-rear direction as the thread 1. The base plate 4 is disposed so as to overlap the upper surface of the thread 1 and is fixed to the thread 1 with bolts (not shown). The base plate 4 is provided with a through hole 4a for weight reduction near the middle in the longitudinal direction.

FIG. 2A is a plan view of the base plate 4. FIG. 2B is a diagram in which radial positions r _{1 to} r ₃ and R _{1 to} R ₃ are further entered with respect to FIG. As shown in FIG. 2, the front side of the base plate 4 has a plurality of female screw holes 5 positioned on a radial position A ₁ having a radius r ₁ from a point C in the front-rear direction and the left-right direction of the base plate 4. , a plurality of female screw holes 6 located on the radial position a ₂ of radius r _2, a plurality of female screw holes 7 located on the radial position a ₃ of radius r ₃ is provided. The point C does not have to be the exact center of the base plate 4 in the front-rear direction and the left-right direction, and may slightly deviate from the exact center point in the front-rear or left-right direction.

On the rear side of the base plate 4, a plurality of female screw holes 8 located on the radial position B _{1 with the} radius R ₁ from the point C and a plurality of female screw holes located on the radial position B ₂ with the radius R ₂ are provided. 9, a plurality of female screw holes 10 located on the radial position B ₃ of radius R _3, and a plurality of female screw holes 11 located on the radial position B ₄ of radius R ₄ is provided.

  Female screw holes 12 to 15 are provided on the left and right sides of the base plate 4 so that the front and rear positions are different from each other by two on the front side and the rear side.

As shown in FIG. 1B, the white body 20 installed on the base plate 4 is cut out from the automobile V along the cut lines S ₁ and S ₂ , and a pipe or the like is fixed to the cut cut body by welding or the like. It is reinforced.

  A front plate 21 projecting forward and a rear plate 22 projecting rearward are fixed to the lower front and lower rear surfaces of the white body 20 by welding or the like. A plate 23 is fixed to the left and right sides of the white body 20 by welding or the like so as to protrude laterally. The front and rear plates 21 and 22 have substantially the same length as the left and right width of the white body 20. The left and right plates 23 have a length of about 70 to 100% of the length of the white body 20 in the front-rear direction and a width in the protruding direction of about 50 to 200 mm.

The front plate 21 has an arc-shaped slot 25 located at a radius of radius r ₁ from the point C, an arc-shaped slot 26 positioned at a radius of radius r ₂ , and a radius of radius r ₃ . An arc-shaped long hole 27 located at the center is provided. The long hole 25 is located near the center in the left-right direction of the plate 21, the long hole 27 is located on the left end side and the right end side, and the long hole 26 is located between the long holes 25 and 27.

The rear plate 22 has an arc-shaped slot 28 located at a radius of radius R ₁ from the point C, an arc-shaped slot 29 positioned at a radius of radius R ₂ , and a radius R ₃ . An arc-shaped long hole 30 positioned in the radial position and an arc-shaped long hole 31 positioned in the radial position of the radius R ₄ are provided. The long hole 28 is located near the center in the left-right direction of the plate 21, the long hole 31 is located on the left end side and the right end side, and the long holes 29 and 30 are located between the long holes 28 and 31. The long hole 29 is located between the long holes 28 and 30.

  The left and right plates 23 are provided with a long hole 33 positioned at an equal radius with respect to the point C, and a front long hole 32 and a rear long hole 34 positioned at an equal radial position having a larger radius.

At the time of placing the white body 20 on the base plate 4, so that is the point C of the center point C and the base plate 4 of the white body 20, and the longitudinal direction of the directivity direction D ₂ and the base plate 4 of the white body 20 intersection angle θ between D ₁ is placed a white body 20 on the base plate 4 to a predetermined angle. Next, of each of the long holes 25 to 34, the one where the female screw holes 5 to 15 can be seen downward is passed through the bolt 40 and tightened to any of the female screw holes 5 to 15, and the white body 20 is fixed to the base plate Fix to 4.

  In FIG. 4, θ = 25 °, and a total of five bolts 40 are inserted through the two long holes 25 of the front plate 21 and screwed into the female screw holes 5. Two bolts 40 are inserted into one long hole 26 on the left side, and are respectively screwed into the female screw holes 6. Further, one bolt 40 is inserted into the left long hole 27 and screwed into the female screw hole 7.

  One bolt 40 is inserted into the long hole 28 of the rear plate 22 and is screwed into the female screw hole 8. Three bolts 40 are inserted into the right long hole 29, and two bolts 40 are inserted into the left long hole 29, and are respectively screwed into the female screw holes 9.

  One bolt 40 is inserted into each of the long holes 32 and 33 of the left plate 23 and screwed into the female screw holes 12 and 13. One bolt 40 is inserted into each of the long holes 33 and 34 of the right plate 23 and screwed into the female screw holes 13 and 14. Thus, when θ = 25 °, the white body 20 is firmly fixed to the base plate 4 by a total of 18 bolts 40.

  In order to fix the white body 20 to the base plate 4, it is sufficient if there are 11 M22 bolts 40. By increasing the number of bolts 40, it is possible to more effectively prevent the white body 20 from shaking and twisting during the test.

  As shown in FIG. 1A, a launching device F as an acceleration device that applies backward acceleration to the sled 1 is installed on the front side of the sled 1. This launching device F has a piston that is ejected to the thread 1 side by hydraulic control (or pneumatic control or the like), and the piston is ejected in a state where the tip of the piston is in contact with the front end of the thread 1. Thus, a rearward impact force, that is, an acceleration can be applied to the thread 1. Giving backward acceleration to the sled 1 by the launching device F in the installed state of the white body 20 shown in FIG. 4 is similar to receiving forward acceleration when the white body 20 on the base plate 4 collides with the oblique. Can simulate automobile oblique collision accidents.

  Thus, according to this embodiment, oblique collision tests can be performed at various collision angles. In this embodiment, the plates 21 and 22 are provided only before and after the white body 20, and the left and right sides of the white body 20 are provided with a plate 23 having a short side length only in the vicinity of the center of the side in the longitudinal direction. Therefore, even if the angle θ is increased, the protrusion of the white body 20 in the direction perpendicular to the rail 2 is small, and it is not necessary to increase the test room space.

In the present invention, like the white body 50 in FIG. 5A, a plate 52 is provided over the entire circumference of the white body main body 51, and an arc-shaped long hole (not shown in FIG. 5) is provided in the plate 52. May be. Further, the width d of the plate 52 may be made larger than shown. In this way, the length of the long hole in the arc direction can be made longer than in the case of FIGS. However, in this case, as shown in FIG. 5B, when the white body 50 is installed at a relatively large angle θ, the width W _{1 in the} direction orthogonal to the rail of the white body 50 is θ = 0 °. becomes considerably larger than the width W ₀ of it is necessary to allow enough space around the rail.

  The above-described embodiment is an example of the present invention, and the present invention may be other than illustrated. For example, the radial position and length of the long hole, the number of the long holes, and the number of the female screw holes may be other than those illustrated.

1 Thread 2 Rail 3 Slider 4 Base Plate 5-15 Female Screw Hole 20, 50 White Body 21-23, 52 Plate 25-34 Long Hole

Claims (3)

Thread that can move along the rail,
A base plate installed on the thread;
A white body installed on the base plate so that the direction of orientation can be changed;
A sled testing device comprising:
The white body is provided with plates that protrude to the front, rear, and left and right sides,
Each plate is provided with an arc-shaped elongated hole extending at an equal radius with respect to a point near the center of the white body,
The base plate is provided with a female screw hole at a position overlapping with the long hole, and the white body is fixed to the base plate by a bolt tightened into the female screw hole through the long hole. Thread testing device characterized by   2. The thread test apparatus according to claim 1, wherein the left and right plates of the white body are provided only in the middle of the side of the white body in the longitudinal direction.   3. The thread test apparatus according to claim 1, wherein the front plate, the rear plate, and the left and right plates are each provided with a plurality of long holes having different radial positions from the point.

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