JP2021152530A - Collision test device - Google Patents

Abstract

To provide a collision test device that can vary the collision speed over a wide range and can collide a single object under test with good reproducibility.SOLUTION: The collision test device includes a block-shaped collision barrier, a sample table on which a specimen under test is placed and which moves in a direction of the collision barrier, sample table acceleration means for moving the sample table in the direction of the collision barrier, and a guide mechanism for guiding the sample table to at least the collision barrier during movement of the sample table. A posture holding unit having a wall to support at least a part of the non-collision side of the sample placed on the sample table is provided adjacent to the sample table. The posture holding unit is configured to move together with the sample table in the direction of the collision barrier. When the sample table and posture holding unit move in the direction of the collision barrier, a stopper stops the movement of the posture holding unit before it reaches a collision surface so that only the sample under test collides with the collision surface and the sample table passes through the barrier penetration unit.SELECTED DRAWING: Figure 1

Description

The present invention relates to a collision test device applied to a collision test of a test object such as an electronic device, and more particularly to a collision test device capable of performing a test excellent in reproducibility and accuracy even with a small and lightweight test object.

Small and lightweight products such as mobile communication devices and wristwatches are frequently impacted by drops and collisions in daily life, so in order to evaluate the reliability and durability of their functions, these products are physically subjected to. A shocking test is being conducted.

As a conventional crash test, a drop collision test is carried out in which the product is dropped and collides with the floor surface. Simply, the product is held by hand and released at a predetermined height to be freely dropped. It has been broken. However, with this method, it was difficult to collide the desired part of the test object with good reproducibility. Therefore, as a test method for making the falling posture of the test object constant, for example, in Patent Document 1, it is possible to collide with the collision surface in a state close to free fall while keeping the falling posture of the test object constant. A drop impact test device is described. This drop impact test device includes a test object holding unit that holds the test object openly and a guide mechanism that defines a drop path of the test object holding unit, and the test object holding unit is the test object holding unit. The test object is equipped with a means for adsorbing the test object, and the test object is released from the adsorption of the test object adsorbing means immediately before the test object collides with the collision surface to stabilize the falling posture of the test object. It can collide with the collision receiving plate with good reproducibility.

However, according to the drop impact test apparatus of Patent Document 1, it is possible to stabilize the falling posture of the test object and make it collide with good reproducibility. However, since the test object is in free fall, the collision speed is high. Since it depends on the fall position, it was necessary to raise the fall start position in order to increase the collision speed. Therefore, there is a problem that the collision speed in the collision test is limited when the size of the device is increased and the installation space of the device is limited accordingly.

On the other hand, in Patent Document 2, the collision surface, the trolley that holds the test object and moves in the horizontal direction, and the weight that is connected to the trolley and passes through the pulley and then connected to the opposite side of the trolley are vertical. Described is a crash test apparatus provided with a string that falls in a direction and a weight that prevents the test object from colliding with the collision surface multiple times by coming off the string when the test object collides with the collision surface. ..

Japanese Unexamined Patent Publication No. 2002-372485 Japanese Unexamined Patent Publication No. 2006-275676

The collision test device of Patent Document 2 is a method in which a trolley holding a test object is connected with a string and towed to cause the test object to collide with a collision surface. The collision speed of the test object can be adjusted in a wide range even with the device size of. However, since the test object collides with the collision surface while being held by the holding member on the trolley, there is a problem that the collision state of the test object alone cannot be directly evaluated. A method of not holding the test object on the trolley without using a holding member is also conceivable, but when the test object is lightweight, the posture of the test object becomes unstable due to air resistance during movement or the like. Therefore, there was a problem in terms of collision reproducibility.

Therefore, the present invention has been made in view of the above points, and an object of the present invention is to be able to change the collision speed over a wide range and to collide a single object under test with good reproducibility while having a compact device configuration. The purpose is to provide a collision test device.

In order to solve the above problems, the collision test apparatus of the present invention includes a block-shaped collision barrier, a sample table on which the test object is placed and moves in the collision barrier direction, and a sample in which the sample table is moved in the collision barrier direction. It is provided with a table acceleration means and a guide mechanism for guiding the sample table to at least the collision barrier when the sample table is moved, and supports at least a part of the test object placed on the sample table on the non-collision surface side. A posture holding portion having a wall surface is provided adjacent to the sample table, and the posture holding portion is configured to move in the collision barrier direction together with the sample table. A stopper is provided between the surface and the collision barrier to prevent only the movement of the attitude holding portion, and the collision barrier is formed so that the collision surface on which the test object collides and the sample table can pass through the inside of the collision barrier. When the sample table and the posture holding part move in the collision barrier direction with the barrier penetrating part, the movement of the posture holding part is stopped by the stopper before reaching the collision surface, and only the test object collides with the collision surface. At the same time, the sample table is configured to pass through the barrier penetration. With this configuration, the test piece is placed on the sample table with the surface facing the collision barrier (collision surface) and the back surface (non-collision surface) opposite to the collision barrier supported by the attitude holding portion. While the sample table and the posture holding part accelerated by the sample table accelerating means are guided toward the collision barrier by the guide mechanism and move together, only the posture holding part is suppressed by the stopper and the movement is suppressed. The posture of the test object is stopped, the test object and the sample table continue to move, and after only the test object collides with the collision surface of the collision barrier, only the sample table passes through the barrier penetration portion of the collision barrier. Since only the test object collides with the collision barrier with good reproducibility, the collision state of the test object alone can be directly evaluated. Further, by changing the acceleration force of the sample table by the sample table acceleration means, the collision speed can be freely adjusted in a wide range in a compact device configuration.

Further, the collision test apparatus of the present invention preferably has a structure in which the posture holding portion is arranged in contact with the surface opposite to the moving direction of the sample table. As a result, the force from the sample table accelerating means is received by the posture holding portion, and the sample table can be moved in a state where the posture holding portion is in contact with the posture holding portion. At this time, by contacting and supporting the test piece with the wall surface of the posture holding portion, even if the test piece is accelerated toward the collision barrier, the posture holding part is covered with the sample table while maintaining the posture of the test piece. The specimen can be moved to the collision barrier.

Further, it is also preferable that the collision test apparatus of the present invention has a configuration in which the posture holding portion is guided by the guide mechanism to move. As a result, the posture-holding portion moves together in the same trajectory as the sample table, so that the position of the posture-holding portion during movement is unlikely to shift, so that the posture of the test object during movement can be more stabilized.

Further, it is also preferable that the collision test apparatus of the present invention has a configuration in which the posture holding portion is guided and moved by a guide mechanism different from the guide mechanism of the sample table. As a result, the posture holding part and the sample table are guided by individual guide mechanisms to move, so that the influence on the sample table due to the movement of the posture holding part and the stop of the movement by the stopper can be further insulated, and the accuracy is higher. A collision test can be realized. Further, even when the posture holding portion is arranged on the stage surface of the sample table, the posture holding portion can move together with the sample table while maintaining the posture of the test object.

It is also preferable that the collision test apparatus of the present invention has a regulating portion in which the posture holding portion comes into contact with the stopper. As a result, the sample table moving together and the posture holding portion can be reliably separated.

Further, in the collision test apparatus of the present invention, it is also preferable that the barrier penetration portion is a notch or a through hole formed over the passage direction of the sample table of the collision barrier. As a result, the degree of freedom in the arrangement design of the collision barrier can be increased according to the collision mode.

It is also preferable that the collision test apparatus of the present invention includes a collision position adjusting means for adjusting at least one of a relative height position, horizontal position and angle between the barrier penetration portion and the sample table. This makes it possible to realize various collision modes such as offset collision.

Further, in the collision test apparatus of the present invention, a step portion formed by being cut out in the vertical direction is provided at the end of the collision surface of the collision barrier, and the standing surface of the step portion continuous from the collision surface is relative to the collision surface. It is also preferable that it is a vertical plane. As a result, when observing the collision state of the test object, the difference in focus distance in the shooting direction between the standing surface of the step and the observation surface of the test object becomes small, making it easier to focus and clear shooting. You can get the data.

Further, in the collision test apparatus of the present invention, the sample table accelerating means is provided in the launching means for ejecting from the rear of the sample table in the collision barrier direction, the traction means for pulling the sample table in the collision barrier direction, and the self-propelled mechanism provided in the sample table. It is also preferable that it is at least one selected from the group of. Thereby, as a means for moving the sample table and the posture holding portion, it can be selected according to a desired collision condition such as a collision speed.

According to the present invention, although the device configuration is compact, the collision speed can be varied over a wide range, and only the test object can collide with the collision barrier while the posture of the test object is kept stable. It is possible to directly evaluate the collision state of the test piece alone with good reproducibility. Further, even when a lightweight test object is collided at high speed, the posture of the test object is kept stable in the process leading to the collision, so that a collision test with higher reproducibility than the conventional collision test can be realized.

(A) is a perspective view showing the configuration of the collision test apparatus according to the first embodiment of the present invention, and (b) is a perspective view of the collision test apparatus shown in FIG. 1 (a) viewed from another angle. (C) It is a perspective view which shows the structure of only the collision barrier among the collision test apparatus shown in FIG. 1 (a) and FIG. 1 (b). It is a schematic perspective view which shows the other structural example of the barrier penetration part of the collision barrier of the collision test apparatus of 1st Embodiment. It is a schematic perspective view explaining the structure of the sample table of the collision test apparatus in 1st Embodiment. It is a schematic perspective view explaining another structural example of the sample table and the guide mechanism of the collision test apparatus in 1st Embodiment. It is a schematic diagram explaining the sample table, the posture holding part, and the guide mechanism which constitute the collision test apparatus in 1st Embodiment, and (a) the arrangement relation of a sample table, a posture holding part, and a guide mechanism (guide rail) is shown. It is a perspective view which shows, (b) the state which showed the state which assembled the sample table, the posture holding part, and a guide mechanism (guide rail). It is a schematic diagram explaining another structural example of the sample table and the posture holding part which constitute the collision test apparatus in 1st Embodiment. It is a partial schematic diagram explaining the collision test apparatus in the 2nd Embodiment of this invention, (a) a sample table and a posture holding part, a guide mechanism (guide rail) for guiding a sample table, and a posture holding part. It is a perspective view which shows the arrangement relation of the guide mechanism which guides | .. It is a schematic perspective view explaining another structural example of the sample table and the posture holding part of the collision test apparatus in 2nd Embodiment. It is explanatory drawing explaining the operation of the collision test apparatus in 1st Embodiment of this invention. It is explanatory drawing explaining the operation of the collision test apparatus in 2nd Embodiment of this invention. It is a partial schematic diagram explaining the structure of the collision barrier of the collision test apparatus and the state of use thereof in the 3rd Embodiment of this invention, and (a) the perspective which explains the part of the collision surface where the step part is formed. It is a perspective view which shows (b) a collision barrier provided with a step part on a collision surface, and (c) is an explanatory view which shows the use state.

Hereinafter, embodiments of the collision test apparatus according to the present invention and their operations will be described with reference to FIGS. 1 to 11.

First, the configuration of the collision test apparatus according to the first embodiment of the present invention shown in FIGS. 1 to 6 and 9 will be described. FIG. 1 shows the configuration of a collision test apparatus 1 which is a typical embodiment of the present invention. As shown in FIGS. 1A and 1B, the collision test apparatus 1 according to the present embodiment has a collision barrier 2 and a sample table 3 arranged to face the collision surface 2F of the collision barrier 2. And the posture holding unit 4 arranged adjacent to the back surface of the sample table 3 (the surface opposite to the surface facing the collision surface 2F of the collision barrier 2), and the moving sample table 3 and the attitude holding unit 4. A guide mechanism 5 that guides the collision barrier 2 and a stopper 6 that is arranged between the movement start position SP of the sample table 3 and the posture holding portion 4 and the collision barrier 2 and prevents only the movement of the posture holding portion 4 collide with each other. At least a sample table accelerating means 7 for accelerating and moving the sample table 3 and the posture holding portion 4 toward the barrier 2 is provided, and each component is fixed on the base table 1B. Further, as shown in FIG. 1 (c), the collision barrier 2 includes a barrier penetrating portion 2P formed so as to be able to pass through the sample table 3. In the present specification, the term "up and down" means the up and down direction when the moving direction of the sample table 3 and the posture holding portion 4 is the horizontal direction.

The collision barrier 2 constituting the collision test apparatus 1 according to the present embodiment will be described with reference to FIGS. 1 and 2. The collision barrier 2 of the present invention has a collision surface 2F on which the test object S collides with the outer surface thereof, and has a barrier penetrating portion 2P for the sample table 3 to pass through the inside thereof. The collision barrier 2 is a block-shaped mass body capable of receiving the collision of the test object S on the collision surface 2F, and has a mass that does not move due to the collision of the test object S. Further, the collision barrier 2 may be fixed to the base base 1B and act as a mass body integrated with the base base 1B. The collision surface 2F in the present embodiment is formed as a plane substantially perpendicular to the moving surfaces of the sample table 3 and the posture holding portion 4, but is formed according to the form specified in the collision test to be carried out. Can be done. Further, the collision surface 2F is preferably made of a material that is not deformed or damaged by the collision of the object S to be collided, and a material having durability according to the material of the object S to be collided and the magnitude of the collision energy is applied. Will be done. When the collision site of the test object S is made of resin, a metal such as iron or a stone material such as granite can be applied as the material of the collision surface 2F. Further, in the collision test to be carried out, when the material of the member to be collided with the test object S is specified, the collision barrier 2 is formed of the designated material, or the collision surface 2F of the collision barrier 2 is made of the designated material. A collision receiving member may be attached. Further, it is preferable that the collision barrier 2 is mounted on the base base 1B by a known position variable mechanism so that its position can be arbitrarily set.

Further, as described above, the collision barrier 2 in the present invention includes a barrier penetrating portion 2P for the sample table 3 to pass through and move inside the collision barrier 2. In the present embodiment, as shown in FIG. 1 (c), the barrier penetrating portion 2P is formed on the bottom surface of the collision barrier 2 in the form of a concave groove type notch formed in the traveling direction of the sample table 3, that is, a so-called tunnel. It is formed like this. Therefore, as shown in FIGS. 1A and 1B, the collision barrier 2 of the present embodiment is straddled on the guide mechanism 5 for guiding the sample table 3 described later. The barrier penetrating portion 2P of the collision barrier 2 is preferably formed so that the sample table 3 guided by the guide mechanism 5 can easily pass through the collision barrier 2, and the sample table 3 guided by the guide mechanism 5 is preferably formed. Is more preferably formed so that the sample can enter the collision barrier 2 in a non-contact manner and smoothly pass through the collision barrier 2.

The configuration of the barrier penetrating portion 2P of the collision barrier 2 is not particularly limited as long as the sample table 3 can pass through the inside of the collision barrier 2, and is, for example, the barrier penetrating portion 20P shown in FIG. 2A. It is also possible to form a hole structure in which the collision barrier 20 penetrates through the sample table 3 in the passing direction. In this case, the guide mechanism 5 described later is inserted and arranged inside the barrier penetrating portion 20P (not shown). Further, in the collision barrier 2 shown in FIG. 1 (c), the collision surface 2F and the barrier penetrating portion 2P are integrally formed of one block body, but as shown in FIG. 2 (b), the base base A block body having a flat bottom surface is placed on a pair of collision barrier support legs 21B installed on 1B to form a collision barrier 21, and the block body having a collision surface 21F and the collision barrier support legs 21B surround the block body. The space formed by the barrier may be the barrier penetrating portion 21P.

Next, the guide mechanism 5 will be described. The guide mechanism 5 according to the present invention is a mechanism for guiding the sample table 3 from at least the movement start position to the collision barrier 2 through a through hole or a sliding groove provided in the sample table 3, and has a rail shape or a rail shape. A wire-shaped or wall-shaped form can be adopted. The guide mechanism 5 in the present embodiment is configured to guide not only the sample table 3 but also the posture holding portion 4 in the collision barrier direction, as shown in FIGS. 1 (a) and 1 (b). Two cylindrical rod-shaped guide rails 5a extending from a position in front of the movement start position of the sample table 3 and the posture holding portion 4 toward a position passing through the barrier penetrating portion 2P of the collision barrier 2, and their guides. It is composed of a rail fixing portion 5b for fixing both ends of the rail. The two guide rails 5a are arranged in parallel at predetermined intervals, and are arranged in the same plane at a predetermined height (position in the vertical direction). The two guide rails 5a are inserted into two through holes provided in the sample base 3 and the posture holding portion 4, respectively, and as a result, the sample base 3 and the posture holding portion 4 are guided by the guide rail 5a and slide. Moving. When the guide mechanism 5 is a guide rail, the structure is not limited to the two structure shown in the present embodiment, and a single structure (monorail) or a multi-guide structure of three or more may be used. It is preferable that the guide mechanism 5 has a small surface roughness, and a material having a low coefficient of friction is applied or surface-treated so that the frictional resistance is reduced. Further, the guide mechanism 5 is basically in a linear shape in order to move the sample table 3 and the posture holding portion 4 by the shortest distance, but the trajectory is set according to the desired collision mode in the collision test to be carried out. It may be in any form. The height of the guide rail 5a of the guide mechanism 5 is set so that the sample table 3 on which the test piece S is placed can smoothly pass through the inside of the collision barrier 21 described above. Further, the rail fixing portion 5b of the guide mechanism 5 is installed on the base base 1B by a known fixing means.

Next, the sample table 3 will be described. The sample table 3 in the present invention is for transporting the test object S to the collision barrier 2 and causing it to collide. In the present embodiment, as shown in FIG. 3, the sample table 3 is formed in a substantially rectangular parallelepiped shape as a whole, and is attached to the flat stage surface 3S on which the test object S is placed and the guide rail 5a of the guide mechanism 5. The mounting means 3M has two through holes 3a that penetrate in the direction in which the sample table 3 moves. The stage surface 3S is subjected to the collision motion of the test object S due to the frictional resistance generated at the contact portion between the stage surface 3S and the test object S due to the movement of the sample table 3 after the test object S reaches the collision barrier 2. In order to reduce the influence, it is preferable to have a surface structure having a small frictional resistance with the test piece S. As a specific example of reducing the surface frictional resistance of the stage surface 3S, the stage surface 3S may be formed of a fluororesin such as Teflon (registered trademark) or a resin having excellent slidability represented by POM, or the stage surface 3S. It is possible to apply a low friction coating treatment to the surface. The shape of the sample table 3 is a substantially rectangular parallelepiped in the present embodiment, but is not particularly limited as long as the test object S can be stably placed and can pass through the barrier penetrating portion 2P of the collision barrier 2. .. Further, the mounting means 3M provided on the sample table 3 is formed as a through hole 3a through which the guide rail 5a can be inserted in the present embodiment, and the guide mechanism 5a is inserted through the through hole 3a. The sample table 3 is attached so as to be smoothly slidable along the guide mechanism 5.

The mounting means 3M of the sample table 3 is not particularly limited as long as it can guide the sample table 3 by the configuration selected as the guide mechanism 5, and various configurations are applied. For example, as shown in FIG. 4A, when a pair of U-shaped guide rails 50a having a guide groove inside is selected as the guide mechanism 50, the mounting means 30M of the sample base 30 is used. The sample table 30 is provided with sliding grooves on both side surfaces of the sample table 30 so as to be fitted with the guide grooves of the guide rail 50a so that the sample table 30 can be slid and moved. May be. Further, as shown in FIG. 4B, when the guide mechanism 51 is composed of one guide rail 51a, the guide rail 51a is fitted to the bottom surface of the sample table 31 as the mounting means 31M of the sample table 31. The sample base 31 may be attached to the guide mechanism 51 by the attachment means 31M (sliding groove) provided with the sliding groove that allows the slide to move. The mounting means 30M (31M) and the guide mechanism 50 (51) are guided by the mounting means 30M (31M) so that the mounting means 30M (31M) and the guide mechanism 50 (51) can slide and move smoothly with low friction. In order to improve the slidability with the rail 50a (51a), a structure may be provided in which a ball bearing or a roller mechanism is provided on at least one of the fitting contact surfaces of the mounting means 30M (31M) and the guide rail 50a (51a). .. Further, known means such as application of a low friction material and a magnetic levitation method are applied to at least one sliding portion of the mounting means 30M (31M) of the sample table 3 (30, 31) and the guide mechanism 5 (50, 51). Applicable.

Next, the posture holding unit 4 will be described. The posture holding portion 4 in the present invention is arranged adjacent to the sample table 3, and is the back surface (non-existing) of the test object S so that the posture of the test object S is stably held when the sample table 3 is moved. It supports at least a part of the collision surface), moves together with the sample table 3, stops moving at the position before the test object S collides with the collision barrier 2, and is separated from the sample table 3 and the test object S. It is a thing. As shown in FIG. 5A, the posture holding portion 4 in the present embodiment is formed into a convex plate-like body having a predetermined thickness as a whole, and at least a part of the back surface of the test object S is above the convex plate-shaped body. A support portion 4A for supporting and holding a posture, a contact portion 4B in contact with the back surface 3F of the sample table 3 at the lower portion thereof, and a posture holding portion in contact with stoppers 6 during movement at both end portions thereof. It has a regulation unit 4C for restricting the movement of 4. The shape of the support portion 4A is formed in the shape of a flat wall in the present embodiment, but is not particularly limited as long as the posture of the test object S can be maintained. The contact portion 4B does not hinder the placement of the test object S on the stage surface 3S of the sample table 3, and the posture holding portion 4 does not come into contact with the test object S when the sample table 3 is separated from the sample table 3. As shown in the present embodiment, it can be configured to be in contact with any of the side surface of the sample table 3 and the stage surface 3S as well as the back surface 3F of the sample table 3, and the shape and mounting means are not particularly limited. Further, in the present embodiment, the contact portion 4B in contact with the sample table 3 is provided with the mounting means 4M for mounting on the guide rail 5a of the guide mechanism 5, and specifically, the direction in which the posture holding portion 4 moves. There are two through holes 4a penetrating the through hole 4a, but the present invention is not limited to this configuration. In the present embodiment, the regulating portion 4C is formed in a wall shape that continuously extends outward from both side ends of the contact portion 4B, but the posture holding portion 4 moves in contact with the stopper 6 described later. The shape, number, and material are not particularly limited as long as the material can be stopped, and it is preferable that the material composition and shape have a strength that can withstand the impact when the stopper 6 is in contact with the stopper 6. Further, in order to absorb the impact when it comes into contact with the stopper 6, a cushioning member made of a cushioning material may be provided at least in the region of the regulating portion 4C in contact with the stopper 6. As a result, the impact noise due to the contact between the regulating portion 4C and the stopper 6 is reduced, and the accuracy of the collision data between the test object S and the collision barrier 2 can be further improved.

The posture holding portion 4 in the present embodiment is configured as a plate-like body in which the support portion 4A, the contact portion 4B, and the regulation portion 4C are integrated as shown in FIG. 5A, and the contact portion 4B is shown in FIG. As shown in (b), in a non-fixed state, the sample table 3 is placed in contact with the back surface 3F, which is the surface opposite to the moving direction of the sample table 3, and the through hole 3a of the sample table 3 and the posture holding portion 4 are in contact with each other. A guide rail 5a is inserted and attached to the through hole 4a formed in the portion 4B. The restricting portion 4C is continuously provided on both sides of the contact portion 4B as a substantially rectangular protrusion and is integrated. Further, the posture holding unit 4 is not limited to a single unit, and a plurality of posture holding units 4 may be installed. Further, the support portion 4A, the contact portion 4B and the regulation portion 4C may be formed as individual members and assembled to form the posture holding portion 4.

Further, as shown in FIG. 5, the posture holding unit 4 according to the present embodiment is smoothly moved by the same guide mechanism 5 as the posture holding unit 4 and the sample table 3 in order to facilitate the movement together with the sample table 3. It is slidably attached to. As a result, the posture holding portion 4 moves in the same trajectory as the sample table 3, so that the position of the moving posture holding portion 4 is unlikely to shift, so that the moving posture of the test object S can be more stabilized. .. Further, since the posture holding portion 4 separated from the sample table 3 stays in the guide mechanism 5, the posture holding portion 4 can be easily collected. Further, as the configuration of the posture holding unit 4 related to the mounting means 4M, the same configuration as that of the mounting means 3M of the sample table 3 can be applied.

Further, another configuration of the posture holding unit 4 is shown in FIG. FIG. 6 shows a configuration example in which the contact portion 40B is provided on the bottom surface portion of the posture holding portion 40, and the posture is held near the end portion of the stage surface 32S of the sample table 32 opposite to the moving direction. By placing the unit 40, the sample table 32 and the posture holding unit 40 are arranged adjacent to each other. In this case, the contact portion 40B of the posture holding portion 40 and the contact portion 40B are placed so that the posture holding portion 40 does not fall from the sample table 32 or the placement position is displaced during movement. For example, an electromagnet method is applied near the end of the sample table 32 opposite to the moving direction, the posture holding unit 40 is fixed to the sample table 32 with the electromagnet turned on, and the posture holding unit 40 is moved from the sample table 32. A fixing means can be applied that turns off the electromagnet to allow it to be detached when separated. In the fixing means to which this electromagnet method is applied, for example, the guide rail 51a (guide mechanism) is energized, power is supplied to the electromagnet by contact with the guide rail 51a, the stopper 6 is used as an energizing switch, and the regulating unit 4C is the stopper 6 When it reaches, the energization switch is turned off and the fixing is released.

Next, the stopper 6 will be described. The stopper 6 in the present invention is placed on the sample table 3 and the stopper 6 by contacting the regulating unit 4C of the posture holding unit 4 that moves together with the sample table 3 before the test object S collides with the collision barrier 2. This is for suppressing the movement of the test object S so that it does not reach the collision barrier 2 while maintaining the movement and posture of the test object S, and separating it from the sample table 3. In the present embodiment, as shown in FIGS. 1A and 1B, a rectangular parallelepiped shape is formed on the front side of the collision surface 2F of the collision barrier 2 and outside of each guide rail 5a constituting the guide mechanism 5. The stoppers 6 are arranged in pairs. The stopper 6 is arranged at a position where it can come into contact with the two restricting portions 4C formed at the left and right ends of the posture holding portion 4, so that the stopper 6 can come into contact with the restricting portion 4C of the posture holding portion 4 to stop the movement. Although it is formed as a block body, its form and arrangement position are not limited to this as long as it can serve as the stopper 6 described above. The position of the stopper 6 is 1 / of the distance from the movement start position of the sample table or the like to the collision barrier 2 from the viewpoint of maintaining the posture of the test object S placed on the sample table 3 as stably as possible. The position is preferably more than 2, and more preferably more than 2/3. Further, it is preferable that the stopper 6 has a known position variable mechanism so that the position can be arbitrarily set. Further, the stopper 6 may be provided with a cushioning member made of a cushioning material in the region in contact with the regulating portion 4C in order to absorb the impact when the regulating portion 4C comes into contact with the stopper 6. As a result, the impact noise due to the contact between the regulating portion 4C and the stopper 6 is reduced, and the accuracy of the collision data between the test object S and the collision barrier 2 can be improved.

Next, the sample table accelerating means 7 will be described. The sample table accelerating means 7 in the present invention is a means for urging the sample table 3 and the posture holding unit 4 in the direction of the collision barrier to accelerate and move the sample table 3 and the attitude holding unit 4 from behind the sample table 3 and the attitude holding unit 4 in two directions of the collision barrier. A launching means for ejecting the sample, a traction means for pulling the sample table 3 in the direction of the collision barrier 2, a self-propelled mechanism provided in the sample table 3, and the like are appropriately selected. As the launching means, a pinball-type spring-forced method of urging, a striker-type coilgun method using electromagnetic force, a linear motor method, or the like can be applied. In the case of the pinball method or the striker type coilgun method, it is preferable to act on the posture holding portion 4 arranged on the back side of the sample table 3 to urge the sample table 3. Further, as the towing means, a method of attaching a string-shaped towing lead to the front of the sample table 3 and the posture holding portion 4 and towing by an electric motor, or a method of towing by free fall of a weight via a pulley can be applied. Further, as the self-propelled mechanism, a mechanism having self-propelled wheels on the sample table 3 and the posture holding portion 4, a linear motor system using a guide mechanism, or the like can be applied. Further, when the sample table accelerating means 7 is arranged on the base table 1B, it is preferable that the sample table accelerating means 7 is mounted on the base table 1B with a known position variable mechanism so that the position can be arbitrarily set.

Further, the self-propelled means may be provided only in the posture holding unit 4 to accelerate the sample table 3, and the posture holding unit 4 may function as the sample table accelerating means 7. As a result, even in the case of the test object S whose posture during movement is difficult to stabilize, the movement speed of the posture holding unit 4 is individually adjusted to match the movement of the sample table 3 while the test body S moves. You can adjust and maintain your posture. In this configuration, a system unit is provided that monitors the speed of the sample table 3 and the posture holding unit 4 and the posture of the test object S, and adjusts the speed of the sample table 3 and / or the posture holding unit 4. Is preferable.

Next, the base base 1B shown in FIGS. 1A and 1B will be described. In the base table 1B, the collision barrier 2, the sample table 3, the posture holding portion 4, the guide mechanism 5, the stopper 6, and the sample table accelerating means 7, which are the elements constituting the collision test device 1 of the present invention, are arranged at predetermined positions. It serves as a base for assembling, and it is preferable that it has rigidity that allows each component to be installed so as to exert the function of the present invention. In the present embodiment, it is a long plate-shaped rectangular parallelepiped part, but the shape is not particularly limited. The base base 1B is arbitrarily used, and each of the above components may be directly arranged on a flat ground or floor to form a collision tester. In this case, the ground or floor can be defined as the base 1B.

Further, the collision test apparatus 1 according to the present embodiment may consume kinetic energy to decelerate and naturally stop the sample table 3 that has passed through the barrier penetrating portion 2P, but since it is stopped at a predetermined position, it is a guide. A sample table stopping means such as a sample table stopper that contacts and decelerates the sample table 3 may be provided in front of the rail fixing portion 5b or the rail fixing portion 5b of the mechanism 5 to cause contact (collision) and stop. When the sample table stop means is brought into contact with the sample table stop means to stop the sample table, it is preferable that the sample table stop means is provided with a buffer member made of a buffer material at a portion where the sample table 3 collides. As a result, the impact noise due to the contact between the sample table 3 and the sample table stopping means is reduced, and the sample table 3 repels after the collision with the sample table stopping means and runs backward on the guide rail which is the guide mechanism 5. Can be suppressed, and the accuracy of collision data between the test object S and the collision barrier 2 can be further improved.

Further, in the collision test apparatus 1 of the present embodiment, at least one of the relative height position, horizontal position, and angle between the barrier penetration portion 2P and the sample table 3 (30, 31, 32) is provided as an additional mechanism. It is also preferable to provide a collision position adjusting means for adjusting. This makes it possible to realize various collision modes such as offset collision. The collision position adjusting means is preferably provided on at least one of the guide mechanism 5 (50, 51) and the collision barrier 2. The collision position adjusting means includes movement in the left-right direction and elevation in the height direction with respect to the traveling direction of the sample table 3 (30, 31, 32), rotation about the height direction, and left-right direction as axes. A known mechanism such as an actuator method can be applied as long as the mechanism can adjust the rotation and the like.

The above-mentioned sample table 3 (30, 31, 32), the posture holding portion 4 (40), the guide mechanism 5 (50, 51), and the stopper 6 constituting the collision test device 1 of the present embodiment are the functions and effects of the present invention. It is appropriately designed with a material and shape that satisfy the rigidity, slidability, durability, etc. that can function in order to demonstrate the above.

Next, the collision test apparatus 10 according to the second embodiment of the present invention shown in FIGS. 7, 8 and 10 will be described. In the present embodiment, as shown in FIG. 7, the posture holding portion 41 is smoothly operated with low friction by another guide mechanism 5G (hereinafter referred to as a posture holding guide mechanism) different from the guide mechanism 52 that guides the sample table 33. It is configured to be slidably attached to. As shown in FIG. 7A, the sample table 33 in the present embodiment has a stepped contacted portion 33H on which the posture holding portion 41 is placed at an end opposite to the moving direction of the stage surface 33S. It is provided with a mounting means 33M including a through hole 33a for mounting on the guide rail 52a constituting the guide mechanism 52. Further, the posture holding portion 41 in the present embodiment is formed into a substantially cross-shaped plate-like body having a predetermined thickness as a whole, and the posture is held by supporting at least a part of the back surface of the test object S on the upper portion thereof. The support portion 41A for the purpose, the contact portion 41B that abuts the contacted portion 33H of the sample table 33 on the lower portion and the continuous bottom surface thereof, and the both end portions of the support portion 41A that come into contact with the stopper 60 during movement. It has a regulation unit 41C for restricting the movement of the posture holding unit 41. The regulation portion 41C is provided with a through hole 41a as an attachment means 41M for attaching to the posture holding guide mechanism 5G. The posture holding guide mechanism 5G in the present embodiment is composed of a columnar guide rail and rail fixing portions for fixing both ends of the guide rail. As shown in FIG. 10, the posture holding portion 41 The rail fixing portion arranged on the moving direction side also serves as a stopper 60 for hindering the movement of the posture holding portion 41, and with this configuration, the posture holding portion 41 is guided to the stopper 60 by the posture holding guide mechanism 5G. Then, as shown in FIG. 7B, the posture holding portion 41 is combined with the sample stand 33 in a state where the contact portion 41B is abutted against the contacted portion 33H of the sample stand 33, and the posture holding portion 41 of the posture holding portion 41. It is attached to the posture holding guide mechanism 5G by inserting a guide rail constituting the posture holding guide mechanism 5G into the through hole 41a provided in the regulating portion 41C. Further, the sample table 33 is attached to the guide mechanism 52 by inserting the guide rail 52a into the through hole 33a provided below the stage surface 33S of the sample table 33. With this configuration, the posture holding unit 41 moves together with the sample table 33 while maintaining the posture of the test object S, and the posture holding unit 41 and the sample table 33 move by individual guide mechanisms. The influence on the sample table 33 due to the movement and the stop of movement by the stopper can be further insulated, and a more accurate collision test can be realized. Further, in FIG. 7, the guide rail constituting the posture holding guide mechanism 5G is a columnar guide rail, and the mounting means 41M of the posture holding portion 41 is in the form of a through hole. For example, as shown in FIG. By applying the configuration, the posture holding portion 41 may be attached to the posture holding guide mechanism 5G, and the guide mechanism 5 (50, 51) described in the first embodiment described above and the corresponding mounting means 3M (30M) may be attached. , 31M) can be applied. Further, the position where the mounting means 41M is provided on the posture holding portion 41 is not limited to the regulating portion 41C, and is appropriately set according to the shape of the posture holding portion 41, the separation mode from the sample table 33, and the like.

Further, FIG. 8 shows another configuration of the present embodiment in which the posture holding portion 41 is attached to the posture holding guide mechanism 5G. In FIG. 8, the posture holding portion 42 having the same configuration as the posture holding portion 40 described in the first embodiment described above is placed on the stage surface 34S of the sample table 34 in the vicinity of the end portion on the side opposite to the moving direction. The posture holding portion 42 is attached to the posture holding guide mechanism 50G by the mounting means 42M provided in the regulating portion 42C. In FIG. 8, the guide rail constituting the posture holding guide mechanism 50G is a columnar guide rail, and the mounting means 42M is in the form of a through hole. However, the sample table 3 (30) described in the first embodiment described above. , 31), and the same method as the configuration of the mounting means 3M (30M, 31M) and the corresponding guide mechanism 5 (50, 51) can be applied. The sample base 34 is attached by inserting the guide rail 53a constituting the guide mechanism 53 into the through hole 34a. With this configuration, even when the posture holding unit 42 is arranged on the stage surface 34S of the sample table 34, the posture holding unit 42 moves together with the sample table 34 while maintaining the posture of the test object S, and the posture holding unit 42 and the posture holding unit 42. Since the sample table 34 is moved by an individual guide mechanism, the influence on the sample table 34 due to the movement of the posture holding portion 42 and the stop of the movement by the stopper can be further insulated, and a more accurate collision test can be performed. Further, the position where the mounting means 42M is provided on the posture holding portion 42 is not limited to the regulating portion 42C, and is appropriately set according to the shape of the posture holding portion 42, the separation mode from the sample table 34, and the like.

Further, in the present embodiment, the stopper 60 is provided in the rail fixing portion constituting the posture holding guide mechanism 5G (50G), but the stopper 60 may be provided separately.

Further, in the collision test apparatus 10 of the present embodiment, as an additional mechanism, a collision position for adjusting at least one of a relative height position, a horizontal position, and an angle between the barrier penetration portion 20P and the sample table 33 (34) is adjusted. It is also preferable to provide adjusting means. This makes it possible to realize various collision modes such as offset collision. The collision position adjusting means is preferably provided on at least one of the guide mechanism 52 (53), the posture holding guide mechanism 5G (50G), and the collision barrier 20. The collision position adjusting means includes movement in the left-right direction and elevation in the height direction with respect to the traveling direction of the sample table 33 (34), rotation about the height direction, rotation about the left-right direction, and the like. A known mechanism such as an actuator method can be applied as long as the mechanism can be adjusted.

The above-mentioned sample table 33 (34), posture holding portion 41 (42), guide mechanism 52 (53), posture holding guide mechanism 5G (50G), and stopper 60 constituting the collision test device 10 of the present embodiment are the present invention. It is appropriately designed with a material and shape that satisfy the rigidity, slidability, durability, etc. that can function in order to exert the effects of. The description of the configuration of the collision barrier and the sample table accelerating means constituting the collision test device 10 in the present embodiment is the same as that of the test device 1 according to the first embodiment described above, and the action and effect thereof are also the same. Further, the description of other configurations relating to the sample table, the posture holding portion, the guide mechanism, and the stopper constituting the collision test apparatus 10 in the present embodiment is the same as that of the test apparatus 1 according to the first embodiment described above. The action and effect are the same.

Next, the operation of the collision test apparatus 1 according to the first embodiment described above will be described with reference to FIG.

(1) Setting of the test piece S As shown in FIG. 9A, the contact portion 4B of the posture holding portion 4 is abutted against the back surface (the surface opposite to the moving direction) of the sample table 3 and adjacent to the sample table 3. The sample table 3 and the posture holding unit 4 are arranged at the movement start position SP in the state of being moved. The test object S is placed on the stage surface 3S of the sample table 3 in a state in which substantially the entire back surface thereof is in contact with and supported by the support portion 4A of the posture holding portion 4.

(2) Movement of the sample table 3 and the posture holding unit 4 Next, as shown in FIG. 9B, the sample table 3 on which the test object S is placed collides with the posture holding unit 4 by the sample table accelerating means 7. It is ejected toward the barrier 2 and accelerates and moves. At this time, the posture holding unit 4 slides along the guide mechanism 5 together with the sample table 3 while maintaining the posture of the test object S by supporting the back surface of the test object S.

(3) Disengagement of the posture holding portion 4 When the sample table 3 with the posture holding portion 4 moves and the regulating portion 4C of the posture holding portion 4 comes into contact with the stopper 6 installed in the area in front of the collision barrier 2. , The movement of only the posture holding portion 4 is hindered. As a result, as shown in FIG. 9C, the posture holding portion 4 is stopped and separated from the sample table 3. The sample table 3 and the test object S placed on the sample table 3 stay on the stage surface 3S and continue to move in the collision barrier 2 direction by inertia while maintaining the posture.

(4) Collision of the test object S with the collision barrier 2 The sample table 3 that has continued to move and the test object S placed on the sample table 3 have a collision barrier 2 as shown in FIG. 9 (d). Reach the collision surface 2F. At this time, since the sample table 3 can enter the tunnel-shaped barrier penetrating portion 2P, the sample table 3 does not come into contact with the collision surface 2F, and only the test object S collides with the collision barrier 2. As shown in FIG. 9E, the sample table 3 leaves the test object S on the collision surface 2F immediately after the test object S reaches the collision surface 2F, and passes through the barrier penetrating portion 2P. Continue moving.

In this way, by the operations (1) to (4), the sample table 3 collides after the test object S collides with the collision barrier 2 while stably maintaining the moving posture of the test object S. Since it passes through the barrier 2 in a non-contact manner, it is possible to realize an accurate collision test with good reproducibility and low noise in the desired collision posture for the test piece S alone.

Next, the operation of the collision test apparatus 10 according to the second embodiment described above will be described with reference to FIG.

(1') Setting of the test piece S1 As shown in FIG. 10A, the contact portion 41B of the posture holding portion 41 is thrust into the stepped contact portion 33H at the rear end of the stage surface 33S of the sample table 33. The sample table 33 and the posture holding portion 41 are arranged at the movement start position SP'in the state of being attached by touching. The test piece S1 is placed on the stage surface 33S of the sample table 33 in a state where substantially the entire back surface thereof is in contact with and supported by the support portion 41A of the posture holding portion 41.

(2') Movement of the sample table 33 and the posture holding unit 41 Next, as shown in FIG. 10 (b), the sample table 33 on which the test object S1 is placed is provided by the sample table accelerating means 70 together with the posture holding unit 41. It is ejected toward the collision barrier 20 and accelerates and moves. At this time, the sample table 33 slides along the guide mechanism 50, and the posture holding portion 41 supports the back surface of the test object S1 to hold the posture of the test object S while maintaining the posture together with the sample table 33. It slides along the guide mechanism 5G.

(3') Detachment of the posture holding portion 41 A regulating portion 41C of the posture holding portion 41 is provided on a stopper 60 which is arranged in an area in front of the collision barrier 20 and also serves as a guide rail fixing portion constituting the posture holding guide mechanism 5G. When they come into contact with each other, the movement of only the posture holding portion 41 is hindered. As a result, as shown in FIG. 10 (c), the posture holding portion 41 is stopped and separated from the sample table 33. The sample table 33 and the test object S1 placed on the sample table 33 remain on the stage surface 33S and continue to move in the two directions of the collision barrier by inertia while maintaining the posture.

(4') Collision of the test object S1 with the collision barrier 20 The sample table 33 that has continued to move and the test object S1 placed on the sample table 33 have a collision barrier as shown in FIG. 10 (d). It reaches the collision surface 20F of 20. At this time, since the sample table 33 can enter the tunnel-shaped barrier penetrating portion 20P, the sample table 33 does not come into contact with the collision surface 20F, and only the test object S1 collides with the collision barrier 20. As shown in FIG. 10E, the sample table 33 leaves the test object S1 on the collision surface 20F immediately after the test object S1 reaches the collision surface 20F, and passes through the barrier penetrating portion 20P. Continue moving.

By the operations (1') to (4') in this way, the sample table 33 is moved after the test object S1 collides with the collision barrier 20 while stably maintaining the moving posture of the test object S1. Since it passes through the collision barrier 20 in a non-contact manner, it is possible to realize an accurate collision test with good reproducibility and low noise for the subject S1 alone in the desired collision posture. Further, by attaching the posture holding unit 41 to the posture holding guide mechanism 5G to move and separate the posture holding unit 41 from the sample table 33, it is possible to control the movement of the posture holding unit 41 individually from the sample table 33. Even when the posture of the test body S1 is difficult to stabilize, the moving posture of the test body S1 can be stably maintained and only the test body S1 can collide with the collision barrier 20.

Next, the collision test apparatus 11 according to the third embodiment of the present invention shown in FIG. 11 will be described. In the present embodiment, as shown in FIG. 11B, a step portion formed by being cut out in the vertical direction is provided at an end portion of the collision surface of the collision barrier 22, and a step portion continuous from the collision surface stands. The surface is configured as a plane perpendicular to the collision surface. More specifically, as shown in FIG. 11A, the collision barrier 22 according to the present embodiment is at least a barrier penetrating portion of the collision surface 2F (gray-painted drawing portion) of the collision barrier 2 according to the first embodiment. A collision surface 2F is cut vertically along a line segment L that passes through the area directly above Ac and connects two points (P1 and P2) on the upper and lower outer edges of the collision surface in a part of the area Ac (diagonal line drawing portion) directly above 2P. It is formed by providing a notch and a step portion. As shown in FIG. 11B, the collision barrier 22 according to the present embodiment includes a step portion extending to the outer edge on one side surface side of the collision surface 2F, and the standing surface Fv of this step portion is perpendicular to the collision surface 2F. It is formed on a flat surface. As a result, as shown in FIG. 11C, when the collision state of the test object S is photographed and observed by an observation recording device (CAM) such as a camera, the standing surface Fv of the step portion and the test object S are observed. By colliding with the observation surface Fs so as not to cause a step, it becomes easy to focus on both sides at the same time, and clear imaging data of the collision portion can be obtained. The stepped portions may be formed on both side surfaces or the upper surface side of the collision barrier 22, and in that case, clear imaging data can be obtained from a desired direction such as both directions or the upper surface of the collision state.

The description of the configuration of the sample table, the posture holding unit, the guide mechanism, the posture holding guide mechanism, the stopper, and the sample table accelerating means constituting the collision test device 11 in the present embodiment relates to the first and second embodiments described above. It is the same as the test devices 1 and 10, and its action and effect are also the same. Further, the description of other configurations relating to the collision barrier constituting the collision test device 11 in the present embodiment is the same as that of the test device 1 according to the first embodiment described above, and the action and effect thereof are also the same.

All of the above-described embodiments are exemplary and not limited to the present invention, and the present invention can be implemented in various other modifications and modifications. Therefore, the scope of the present invention is defined only by the claims and their equivalents.

1, 10, 11 Collision test equipment 1B, 10B Base base 2, 20, 21, 22 Collision barrier 2F, 20F Collision surface 21B Collision barrier support legs 3, 30, 31, 32, 33, 34 Sample base 3a, 30a, 33a Through hole 3F Back of sample table 3M, 30M, 31M Mounting means to guide mechanism 3S, 30S, 31S, 33S, 34S Stage surface 33H Contacted part to which posture holding part is mounted 4, 40, 41, 42 Posture holding part 4A, 40A, 41A, 42A Support part 4B, 40B, 41B, 42B Collision part 4C, 40C, 41C, 42C Restriction part 4M Mounting means to guide mechanism 41M, 42M Mounting means to posture holding guide mechanism 4a, 41a Penetration Holes 5, 50, 51, 52, 53 Guide mechanism 5a, 50a, 51a, 52a, 53a Guide rail 5b, 52b Guide rail fixing part
5G, 50G Posture maintenance guide mechanism 6,60 Stopper 7,70 Sample stand Accelerating means S, S1 Subject 2P, 20P, 21P Barrier penetration CAM Observation recording device

Claims (9)

When the block-shaped collision barrier, the sample table on which the test object is placed and moved in the collision barrier direction, the sample table accelerating means for moving the sample table in the collision barrier direction, and the sample table are moved. A collision test apparatus including a guide mechanism for guiding the sample table to at least the collision barrier.
A posture holding portion having a wall surface that supports at least a part of the non-collision surface side of the test object placed on the sample table is provided adjacent to the sample table.
The posture holding portion is configured to move in the collision barrier direction together with the sample table.
A stopper is provided between the movement start position of the sample table and the posture holding portion and the collision barrier to prevent only the movement of the posture holding portion.
The collision barrier has a collision surface on which the test object collides, and a barrier penetrating portion formed so that the sample table can pass through the inside of the collision barrier.
When the sample table and the posture holding portion move in the collision barrier direction, the movement of the posture holding portion is stopped by the stopper before reaching the collision surface, and only the test object collides with the collision surface. A collision test apparatus characterized in that the sample table is configured to pass through the barrier penetrating portion. The collision test apparatus according to claim 1, wherein the posture holding portion is arranged in contact with a surface opposite to the moving direction of the sample table. The collision test apparatus according to claim 1 or 2, wherein the posture holding portion is guided by the guide mechanism to move. The collision test device according to claim 1 or 2, wherein the posture holding portion is guided and moved by a guide mechanism different from the guide mechanism. The collision test apparatus according to any one of claims 1 to 4, wherein the posture holding portion has a regulating portion that comes into contact with the stopper. The collision test apparatus according to any one of claims 1 to 5, wherein the barrier penetrating portion is a notch or a through hole formed in the passage direction of the sample table of the collision barrier. .. Any one of claims 1 to 6, further comprising a collision position adjusting means for adjusting at least one of the relative height position, horizontal position and angle of the barrier penetrating portion and the sample table. The collision test device described in the section. At the end of the collision surface of the collision barrier, a step portion formed by being cut out in the vertical direction is provided, and the standing surface of the step portion continuous from the collision surface is a plane perpendicular to the collision surface. The collision test apparatus according to any one of claims 1 to 7, wherein the collision test apparatus is provided. The sample table accelerating means is selected from a group of launching means for ejecting from the rear of the sample table in the collision barrier direction, traction means for pulling the sample table in the collision barrier direction, and a self-propelled mechanism provided in the sample table. The collision test apparatus according to any one of claims 1 to 8, wherein the collision test apparatus is at least one.

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