Vehicle crash simulation test apparatus

Abstract

The present invention relates to a collision test device, configured to enable real-time lateral dynamic behavior of a collision test vehicle body (10) during a collision accident, such as in a collision accident of an actual vehicle. Through this, reliable data regarding passenger safety can be secured, and when developing restraint devices (airbags, seat belts, etc.) that affect passenger safety, performance improvement of the restraint device can be achieved.

Description

Technology Field

[0001] The present invention relates to a crash test device, and more specifically, to a technology for a crash test device capable of real-time implementation of the lateral dynamic behavior of a vehicle body occurring during a real-vehicle collision. Background Technology

[0002] Automakers are developing and selling vehicles that meet the crash test standards set by the U.S. Insurance Institute for Highway Safety (IIHS) to secure overseas sales networks.

[0003] The Small Overlap crash test, a type of crash test, is conducted under conditions of a vehicle speed of 64 km / h, a 0-degree frontal angle, a 25% offset, and a rigid barrier column. The New Frontal Research Moving Deformable Barrier Test, which conducts crash tests under more severe conditions than the Small Overlap, is conducted under conditions of a vehicle speed of 90.1 km / h, a 15-degree incline, a 35% offset, and a Research Moving Deformable Barrier (RMDB).

[0004] When a collision occurs while a vehicle is in motion, lateral dynamic behavior of the vehicle body occurs, and due to this lateral dynamic behavior of the vehicle body, the passengers' behavior also changes in various directions.

[0005] However, current sleds are configured to perform only one type of collision mode—such as a frontal collision, a side collision, or an offset collision—by fixing the vehicle body to a specific position (state) and moving it in only one direction. Consequently, they cannot simultaneously simulate the lateral dynamic behavior of the vehicle body in real time, as is the case with actual vehicle collision accidents. This results in a disadvantage where the passenger safety data obtained through the collision test differs significantly from that of actual vehicle collision accidents.

[0006] If the data obtained through crash tests differs significantly from actual vehicle crashes, the performance of restraint devices (airbags, seat belts, etc.) that affect passenger safety will be compromised during development, and in such cases, there is a risk that passengers in the actual vehicle may suffer serious injuries from interior components.

[0007] The matters described above as background technology are intended only to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. Prior art literature

[0008] Republic of Korea Published Patent Application No. 10-2002-0056577 The problem to be solved

[0009] The present invention is a crash test device capable of real-time implementation of the lateral dynamic behavior of a vehicle body used for crash testing, similar to a collision accident involving an actual vehicle. The purpose of the invention is to significantly improve the reliability of passenger safety data obtained through crash testing and, thereby, to achieve performance improvements in the development of restraint devices (airbags, seat belts, etc.) that affect passenger safety. means of solving the problem

[0010] The collision test device of the present invention for achieving the above-mentioned purpose comprises: a lower plate installed to be movable back and forth along the first guide rail by being coupled to a first guide rail extended in the front-rear direction; an upper plate coupled to the lower plate so as to be movable in the left-right direction relative to the lower plate and fixedly coupled to the vehicle body for the collision test; and a lateral movement inducing unit connected to the upper plate or the vehicle body for the collision test, which induces lateral movement of the upper plate when the lower plate moves along the first guide rail.

[0011] It is further characterized by including an actuator installed to be located on one side of the first guide rail and generating power to move the lower plate so that the lower plate can move in one direction along the first guide rail when operated.

[0012] The actuator comprises an operating rod that operates using pneumatic, hydraulic, or gas pressure; and is characterized in that, when the actuator is operated, the operating rod presses the lower plate to move the lower plate.

[0013] The apparatus further comprises: a second guide rail coupled to the lower plate and extended in the left-right direction; and a rail block coupled to the second guide rail, movable left-right along the second guide rail, and coupled to the upper plate; wherein the upper plate moves laterally relative to the lower plate as the rail block moves along the second guide rail.

[0014] The above lateral movement induction unit is characterized by comprising: a rail mounting block fixedly installed on one side of a lower plate; a guide rail formed in an arc shape having a predetermined curvature and provided to extend in the front-rear direction on the rail mounting block; a rail guide coupled to the guide rail and moving along the guide rail; and a connecting arm connecting the rail guide to the upper plate or the rail guide to the vehicle body for a collision test.

[0015] The above guide rail is characterized by having one end facing forward that is spaced furthest from the lower plate in one direction, and the other end facing backward that is positioned closest to the lower plate, and being formed in an arc shape that gradually approaches the lower plate from one end to the other end.

[0016] The apparatus further includes an actuator that generates power to move the lower plate; in the initial state before the actuator operates, the lower plate is located in front of the first guide rail, and the upper plate to which the collision test vehicle body is attached is located laterally in the state closest to the rail mounting block; and as the lower plate moves rearward along the first guide rail due to the operation of the actuator, the upper plate to which the collision test vehicle body is attached moves laterally relative to the lower plate along the direction in which the distance from the rail mounting block increases. Effects of the invention

[0017] The crash test device according to the embodiment of the present invention is configured to simultaneously implement the lateral dynamic behavior of the vehicle body for the crash test in real time during a crash accident, just as in a collision accident of an actual vehicle. Through this, reliable data regarding passenger safety can be secured, and furthermore, when developing restraint devices (airbags, seat belts, etc.) that affect passenger safety, it has the effect of achieving performance improvement of the restraint devices. Brief explanation of the drawing

[0018] FIG. 1 is a drawing of a collision test device according to the present invention, FIG. 2 is an exploded view of the crash test device of FIG. 1, FIG. 3 is a drawing of the state before the collision test of the collision test device according to the present invention, FIG. 4 is a drawing of the state after a collision test of the collision test device according to the present invention. Specific details for implementing the invention

[0019] Specific structural or functional descriptions of the embodiments of the present invention disclosed in this specification or application are merely illustrative for the purpose of explaining embodiments according to the present invention, and embodiments according to the present invention may be implemented in various forms and should not be interpreted as being limited to the embodiments described in this specification or application.

[0020] Since embodiments according to the present invention may be subject to various modifications and may take various forms, specific embodiments are illustrated in the drawings and described in detail in this specification or application. However, this is not intended to limit embodiments according to the concept of the present invention to specific disclosed forms, and it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention.

[0021] Terms such as "first," "second," etc., may be used to describe various components, but said components shall not be limited by said terms. For the sole purpose of distinguishing one component from another, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component.

[0022] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. Conversely, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. Other expressions describing the relationship between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," should be interpreted in the same way.

[0023] The terms used herein are merely for describing specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to specify the existence of the described features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0024] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this specification.

[0025] A control unit (controller) according to an exemplary embodiment of the present invention may be implemented through a non-volatile memory (not shown) configured to store data relating to an algorithm configured to control the operation of various components of a vehicle or software instructions for executing said algorithm, and a processor (not shown) configured to perform the operation described below using the data stored in said memory. Here, the memory and the processor may be implemented as separate chips. Alternatively, the memory and the processor may be implemented as a single chip integrated with each other. The processor may take the form of one or more processors.

[0026] Hereinafter, a collision test device according to a preferred embodiment of the present invention will be examined with reference to the attached drawings.

[0027] The crash test device according to the present invention is configured to simultaneously implement the lateral dynamic behavior of the vehicle body for the crash test in real time during the crash test, just as in a collision accident of an actual vehicle.

[0028] That is, the collision test device according to the present invention comprises a lower plate (200) installed to be movable back and forth along the first guide rail (100) by being coupled to a first guide rail (100) that extends in the front and rear directions as shown in FIGS. 1 to 4, an upper plate (300) coupled to the lower plate (200) so as to be movable in the left and right directions relative to the lower plate (200) and fixedly coupled to the vehicle body (10) for the collision test, and a lateral movement inducing unit (400) connected to the upper plate (300) or the vehicle body (10) for the collision test, which induces lateral movement of the upper plate (300) when the lower plate (200) moves along the first guide rail (100).

[0029] The first guide rail (100) is fixedly installed at the location for the collision test, and as shown, two guide rails spaced apart from each other are installed parallel to each other while extending along the front-rear direction.

[0030] The first guide rail (100) can be composed of a linear motion guide.

[0031] A rail block is fixedly coupled to the bottom surface of the lower plate (200), and the rail block is coupled to the first guide rail (100) so that it can move back and forth along the first guide rail (100), and as a result, the lower plate (200) has a structure that can move back and forth along the first guide rail (100).

[0032] The upper plate (300) is positioned on the lower plate (200), and the vehicle body (10) for the crash test is fixedly attached to the upper surface.

[0033] The vehicle body (10) for the crash test is a steel body reinforced so as not to undergo permanent deformation, and the vehicle body (10) for the crash test is provided with a passenger safety space (11) in which a dummy (1) is placed.

[0034] The passenger safety space (11) is the interior space where the actual passenger boards the vehicle, excluding the front engine room space and the rear trunk room space based on the passenger vehicle.

[0035] The dummy is placed facing forward in the passenger safety space (11).

[0036] The upper plate (300) is structured to be movable in the left and right directions relative to the lower plate (200). To this end, the present invention has a second guide rail (500) attached to the upper surface of the lower plate (200) and a rail block (600) attached to the lower surface of the upper plate (300).

[0037] As shown in the illustration, two second guide rails (500) are installed parallel to each other while extending along the left and right directions, spaced apart from each other in the front and back directions.

[0038] A rail block (600) fixedly coupled to the underside of an upper plate (300) is coupled to a second guide rail (500) and can move left and right along the second guide rail (500). Thus, as the rail block (600) moves left and right along the second guide rail (500), the upper plate (300) to which the collision test vehicle body (10) is coupled is structured to move laterally relative to the lower plate (200).

[0039] The second guide rail (500) and the rail block (600) can be configured as a linear motion guide.

[0040] The collision test device according to the present invention further includes an actuator (700) that is installed to be located at one end (front) of the first guide rail (100) and generates power to move the lower plate (200) so that the lower plate (200) can move in one direction along the first guide rail (100) when operated.

[0041] The actuator (700) may be configured as, for example, an airbag inflator, a pneumatic cylinder, or a hydraulic cylinder that operates when current is applied to generate pneumatic pressure (or high-pressure gas), and includes an operating rod (710) that operates as pneumatic pressure, hydraulic pressure, or gas pressure, and when the actuator (700) operates, the operating rod (710) pressurizes the lower plate (200), causing the lower plate (200) to move from the front to the rear along the first guide rail (100).

[0042] The lateral movement induction unit (400) according to the present invention comprises a rail mounting block (410) fixedly installed on one side of a lower plate (200), a guide rail (420) formed in an arc shape having a predetermined curvature and extended in the front-rear direction on the rail mounting block (410), a rail guide (430) coupled to the guide rail (420) and moving along the guide rail (420), and a connecting arm (440) connecting the rail guide (430) to an upper plate (300) or the rail guide (430) to a vehicle body (10) for collision testing.

[0043] The guide rail (420) is installed to extend forward and backward from the upper surface of the rail mounting block (410).

[0044] The guide rail (420) is formed in an arc shape such that one end facing forward is spaced furthest from the lower plate (200) in one direction, the other end facing backward is positioned closest to the lower plate (200), and gradually approaches the lower plate (200) from one end to the other end.

[0045] The operation of the embodiments of the present invention will be explained below.

[0046] When a collision occurs while a vehicle is in motion, the vehicle body undergoes lateral dynamic movement due to the collision, and as the passenger's movement changes in various directions due to the lateral dynamic movement of the vehicle body, the distance between the passenger and the interior components narrows, and in severe cases, the passenger comes into contact with the interior components and sustains injuries.

[0047] In order to maximize the real vehicle situation described above, the crash test device according to the present invention places a dummy (1) facing forward in the passenger safety space (11) of the vehicle body (10) for the crash test and then operates the actuator (700).

[0048] Meanwhile, as shown in FIGS. 1 and 3, when the actuator (700) is in an initial state before operation, the lower plate (200) is located in front of the first guide rail (100), and the upper plate (300) to which the collision test vehicle body (10) is attached is moved to the left along the second guide rail (500) and is located on the side of the rail mounting block (410) in the closest state to the rail mounting block (410).

[0049] Additionally, when the actuator (700) is in its initial state before operation, the rail guide (430) is positioned at the front end of the guide rail (420).

[0050] When the actuator (700) is operated in the aforementioned initial state, the lower plate (200) moves backward along the first guide rail (100) by the operating force of the actuator (700), and due to the backward movement of the lower plate (200), the rail guide (430) moves from the front end toward the rear end along the guide rail (420) formed in an arc shape, and due to the backward movement of the rail guide (430), the upper plate (300) moves from the left to the right along the second guide rail (500).

[0051] In this way, when the upper plate (300) moves from left to right along the second guide rail (500), the collision test vehicle body (10) combined with the upper plate (300) moves to one side along the direction in which the distance from the rail mounting block (410) increases. Through this, the collision test device according to the present invention can simultaneously implement the lateral dynamic behavior of the collision test vehicle body (10) in real time during a collision test, just as in a collision accident of an actual vehicle.

[0052] As described above, the collision test device according to the present invention is configured to simultaneously implement the lateral dynamic behavior of the collision test vehicle body (10) in real time during a collision accident, such as in a collision accident of an actual vehicle. Through this, reliable data regarding passenger safety can be secured, and furthermore, there is an advantage of being able to achieve performance improvement of restraint devices (airbags, seat belts, etc.) that affect passenger safety when developing such devices.

[0053] Although the present invention has been illustrated and described in relation to specific embodiments, it will be obvious to those skilled in the art that the present invention can be modified and changed in various ways without departing from the technical spirit of the invention as provided by the following claims. Explanation of the symbols

[0054] 1 - Dummy 10 - Crash test body 100 - 1st guide rail 200 - Lower plate 300 - Upper Plate 400 - Lateral Movement Guidance Unit 410 - Rail mounting block 420 - Guide rail 430 - Rail guide 440 - Connecting arm 500 - 2nd guide rail 600 - Rail block 700 - Actuator 710 - Actuating rod

Claims

Claim 1 A collision test device characterized by comprising: a lower plate installed to be movable back and forth along the first guide rail by being coupled to a first guide rail extended in the front-rear direction; an upper plate coupled to the lower plate so as to be movable in the left-right direction relative to the lower plate and fixedly coupled to a vehicle body for a collision test; and a lateral movement inducing unit connected to the upper plate or the vehicle body for a collision test, which induces lateral movement of the upper plate when the lower plate moves along the first guide rail; wherein the lateral movement inducing unit comprises: a rail mounting block fixedly installed on one side of the lower plate; a guide rail formed in an arc shape having a predetermined curvature and provided to be extended in the front-rear direction on the rail mounting block; a rail guide coupled to the guide rail and moving along the guide rail; and a connecting arm connecting the rail guide to the upper plate or the rail guide to the vehicle body for a collision test. Claim 2 A collision test device according to claim 1, further comprising: an actuator installed to be positioned at one end of the first guide rail and generating power to move the lower plate so that the lower plate can move in one direction along the first guide rail when operated. Claim 3 A collision test device according to claim 2, wherein the actuator includes an operating rod that operates using pneumatic, hydraulic, or gas pressure; and wherein, when the actuator is operated, the operating rod presses the lower plate to move the lower plate. Claim 4 A collision test device according to claim 1, further comprising: a second guide rail coupled to the lower plate and extending in a left-right direction; and a rail block coupled to the second guide rail, movable left-right along the second guide rail, and coupled to the upper plate; wherein the upper plate moves laterally relative to the lower plate as the rail block moves along the second guide rail. Claim 5 delete Claim 6 A collision test device according to claim 1, wherein the guide rail is formed in an arc shape that gradually approaches the lower plate from one end to the other end, with one end facing forward being spaced furthest from the lower plate in one direction and the other end facing rearward being positioned closest to the lower plate. Claim 7 A collision test device according to claim 1, further comprising an actuator that generates power to move the lower plate; wherein, in the initial state before the actuator operates, the lower plate is located in front of the first guide rail, and the upper plate to which the collision test vehicle body is attached is located laterally in a state closest to the rail mounting block; and wherein, as the lower plate moves rearward along the first guide rail due to the operation of the actuator, the upper plate to which the collision test vehicle body is attached moves laterally relative to the lower plate along the direction in which the distance from the rail mounting block increases.

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