Dummy head structure calibration device for automobile crash test

Abstract

The utility model discloses a dummy head structure calibration device for an automobile crash test, and the device comprises a pendulum bob suspension system which comprises an impact pendulum bob and a hanging rope, and the lower end of the hanging rope is connected with the impact pendulum bob; the air bag impact head is arranged on the impact pendulum bob; the installation structure is placed on the horizontal plane and used for installing the dummy head structure, the dummy head structure comprises a neck and a head arranged above the neck, and when the impact pendulum bob is in the free falling state, the air bag impact head is located on the side, facing the head, of the impact pendulum bob and is opposite to the head. Compared with the prior art, the dummy head structure calibration device for the automobile crash test is more suitable for a crash contact mode in an actual automobile crash test, the biological simulation degree of the dummy head structure can be more fully verified, the accuracy of evaluating the injury of the dummy head structure in the automobile crash test is improved, and the dummy head structure calibration device for the automobile crash test is more suitable for popularization and application. And the validity of automobile collision test data is ensured.

Description

Technical Field

[0001] The utility model relates to the field of automobile collision test, in particular to a dummy head structure calibration device for automobile collision test. Background Art

[0002] In a car collision, head injuries have a great impact on people, so it is particularly important to accurately measure and quantify head injuries in collision tests. In order to ensure that the dummies used in car collision tests can truly reflect the injuries suffered by the occupants when a collision occurs, the dummies need to be calibrated.

[0003] Currently, the dummy head calibration adopts the method of direct impact of the head on a rigid plane. However, in real collision tests, the dummy often comes into contact with the airbag or side airbag curtain. Therefore, the existing method cannot guarantee the accuracy of the calibration results. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a dummy head structure calibration device for automobile collision test, which can fully verify the biosimulation degree of the dummy head structure and improve the accuracy of the dummy head structure injury evaluation and the validity of the data.

[0005] According to the embodiment of the utility model, the dummy head structure calibration device for automobile collision test includes: a pendulum suspension system, the pendulum suspension system includes an impact pendulum and a hanging rope, the lower end of the hanging rope is connected to the impact pendulum; an airbag impact head, the airbag impact head is arranged on the impact pendulum; a mounting structure, the mounting structure is placed on a horizontal plane, and is used to install a dummy head structure, the dummy head structure includes a neck and a head arranged above the neck, and when the impact pendulum is in a free hanging state, the airbag impact head is located on the side of the impact pendulum facing the head and opposite to the head.

[0006] According to the dummy head structure calibration device for automobile collision test in the embodiment of the utility model, the pendulum suspension system includes an impact pendulum and a hanging rope, the airbag impact head is arranged on the impact pendulum, and when the impact pendulum is in a free hanging state, the hanging rope restrains the impact pendulum, and the airbag impact head is located on the side of the impact pendulum facing the head and opposite to the head, so that the impact pendulum drives the airbag impact head to hit the head. Compared with the prior art, it is more in line with the collision contact mode between the head and the airbag or side air curtain in the actual automobile collision test, and can more fully verify the bio-simulation degree of the dummy head structure used, improve the accuracy of the dummy head structure injury evaluation in the automobile collision test, and ensure the validity of the automobile collision test data.

[0007] In addition, the dummy head structure calibration device for automobile collision test according to the utility model may also have the following additional technical features:

[0008] In some embodiments, a speed measuring device is provided on the impact pendulum, and the speed measuring device is used to measure the movement speed of the impact pendulum.

[0009] In some embodiments, the speed measuring device includes: a laser emitter and a speed measuring grid, the laser emitted by the laser emitter extends toward the impact pendulum, and the speed measuring grid has a plurality of bars. When the impact pendulum is in a free-hanging state, the plurality of bars sequentially block the laser emitted by the laser emitter.

[0010] In some embodiments, the airbag impact head and the impact pendulum are detachable, there are multiple airbag impact heads, the specifications of the multiple airbag impact heads are different, and the impact pendulum can be selectively connected to one of the airbag impact heads.

[0011] In some embodiments, the airbag impact head has an inflation port for inflating air into the airbag impact head or extracting air from the airbag impact head.

[0012] In some embodiments, the mounting structure includes: a column, the lower end of which is placed on the horizontal plane; an adapter bracket, which is arranged at the upper end of the column, the lower end of the neck is suitable for connecting to the adapter bracket, and the adapter bracket is used to adjust the direction of the head.

[0013] In some embodiments, the adapter bracket is used to adjust the head to rotate along a first axis, a second axis, and a third axis respectively, and the first axis, the second axis, and the third axis are perpendicular to each other.

[0014] In some embodiments, the adapter bracket is rotatably connected to the column, and the rotation axis of the adapter bracket and the column is the first axis.

[0015] In some embodiments, at least one of the adapter bracket and the column is provided with an arc-shaped groove, the adapter bracket and the column are connected by a fastener, and the fastener is passed through the arc-shaped groove.

[0016] In some embodiments, the adapter bracket includes: a first adapter portion, the first adapter portion is connected to the column; a second adapter portion, the second adapter portion is rotatably connected to the first adapter portion, and the rotation axis of the second adapter portion and the first adapter portion is the second axis; a third adapter portion, the third adapter portion is rotatably connected to the second adapter portion, and the rotation axis of the third adapter portion and the second adapter portion is the third axis, and the lower end of the neck is connected to the third adapter portion.

[0017] In some embodiments, at least one of the first adapter portion and the second adapter portion is provided with a plurality of scale lines spaced apart in the circumferential direction of the second axis; and / or, at least one of the second adapter portion and the third adapter portion is provided with a plurality of scale lines spaced apart in the circumferential direction of the third axis; and / or, at least one of the first adapter portion and the column is provided with a plurality of scale lines spaced apart in the circumferential direction of the first axis.

[0018] In some embodiments, the column is height-adjustable in the up-and-down directions.

[0019] In some embodiments, a plurality of mounting holes are provided at an upper end of the mounting structure, and the dummy head structure is connected and fixed to at least some of the mounting holes via fasteners.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a structural schematic diagram of a dummy head structure calibration device for automobile collision test according to an embodiment of the utility model, wherein the airbag impact head impacts the head from the front;

[0023] Figure 2 It is a structural schematic diagram of a dummy head structure calibration device for automobile collision test according to an embodiment of the utility model, wherein the airbag impact head impacts from the side of the head;

[0024] Figure 3 It is a three-dimensional view at one angle of the adapter bracket of the dummy head structure calibration device for automobile collision test according to the embodiment of the utility model;

[0025] Figure 4 is a three-dimensional view from another angle of the adapter bracket of the dummy head structure calibration device for automobile collision test according to the embodiment of the utility model;

[0026] Figure 5 It is a side view of an adapter bracket of a dummy head structure calibration device for automobile collision test according to an embodiment of the utility model;

[0027] Figure 6 It is a front view of an adapter bracket of a dummy head structure calibration device for automobile collision test according to an embodiment of the utility model;

[0028] Figure 7It is a three-dimensional diagram of the pillar of the dummy head structure calibration device for automobile collision test according to the embodiment of the utility model;

[0029] Figure 8 It is a front view of a column of a dummy head structure calibration device for automobile collision test according to an embodiment of the utility model;

[0030] Fig. 9 It is a top view of a column of a dummy head structure calibration device for automobile collision test according to an embodiment of the utility model;

[0031] Fig.10 It is a structural schematic diagram of a dummy head structure calibration device for automobile collision test according to another embodiment of the utility model;

[0032] Fig.11 The present invention is a flow chart of a control method of a dummy head structure calibration device for automobile collision test according to an embodiment of the present utility model.

[0033] Reference numerals:

[0034] 100. Dummy head structure calibration device for automobile collision test;

[0035] 1. Pendulum suspension system; 11. Impact pendulum; 111. Speed ​​measuring grid; 112. Bars; 12. Hanging rope;

[0036] 2. Airbag impact head; 21. Inflation port;

[0037] 3. Installation structure; 31. Column; 311. Arc groove; 312. Main body; 313. First platform; 314. Second platform; 32. Transfer bracket; 321. First transfer part; 322. Second transfer part; 323. Third transfer part; 324. Installation hole;

[0038] 200. Dummy head structure; 201. Neck; 202. Head. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The following describes a dummy head structure calibration device 100 for a vehicle collision test according to an embodiment of the present utility model with reference to the accompanying drawings.

[0044] like Figure 1 and Figure 2 As shown, a dummy head structure calibration device 100 for a car collision test according to an embodiment of the utility model includes a pendulum suspension system 1, an airbag impact head 2 and a mounting structure 3.

[0045] Specifically, refer to the attached Figure 1 and attached Figure 2As shown, the pendulum suspension system 1 includes an impact pendulum 11 and a hanging rope 12, the lower end of the hanging rope 12 is connected to the impact pendulum 11, the airbag impact head 2 is arranged on the impact pendulum 11, and the mounting structure 3 is placed on a horizontal plane, which is used to install a dummy head structure 200 to ensure the reliability and stability of the installation of the dummy head structure 200. The dummy head structure 200 includes a neck 201 and a head 202 arranged above the neck 201. A three-axis acceleration sensor is installed at the center of mass position of the head 202, which can collect the acceleration response of the center of mass of the head 202 during the collision of the head 202. When the impact pendulum 11 is in a free-hanging state, the airbag impact head 2 is located on the side of the impact pendulum 11 facing the head 202 and opposite to the head 202, so that the impact pendulum 11 drives the airbag impact head 2 to impact the head 202.

[0046] It can be understood that after the impact pendulum 11 is lifted to a preset height in a direction away from the dummy head structure 200 and then released, the hanging rope 12 restrains the impact pendulum 11 while it is falling, limiting the impact pendulum 11 from driving the airbag impact head 2 to move in a direction close to the head 202, so as to ensure that the airbag impact head 2 hits the head 202.

[0047] In the related art, the calibration of the dummy head structure usually adopts the method of directly hitting the head against a rigid plane, in which only a small piece of head skin contacts the rigid plane, while in actual collision tests, the head often contacts the airbag or the side air curtain. The two collision contact modes are quite different, and the bio-simulation degree of the dummy head cannot be fully verified. The dummy head structure calibration device 100 for automobile collision test of the utility model adopts the method of the head 202 colliding with the airbag impact head 2, which is more in line with the collision contact mode between the head 202 and the airbag or the side air curtain in the actual automobile collision test, and can more fully verify the bio-simulation degree of the dummy head structure 200 used, improve the accuracy of the injury evaluation of the dummy head structure 200 in the automobile collision test, and ensure the validity of the automobile collision test data.

[0048] For example, the calibration method in the prior art is to determine whether the calibration is passed by judging whether the peak value of the three-axis composite acceleration of the head center of mass is between 225g-275g (g=9.81m / s2), while the peak value of the composite acceleration of the head center of mass in the actual collision test is generally about 45g. The deviation between the prior art and the actual collision test is relatively large. The way in which the airbag impact head 2 and the head 202 collide with each other in the utility model is closer to the collision contact mode of the actual collision test, and the measured peak value of the composite acceleration of the head 202 center of mass is also closer to 45g.

[0049] It should be noted that the neck 201 can adopt a calibrated neck 201 or a neck 201 alternative structure whose mechanical properties do not change. When the neck 201 adopts a neck 201 alternative structure whose mechanical properties do not change, there is no need to perform additional calibration on the neck 201 alternative structure.

[0050] Preferably, if Figure 1 and Figure 2 As shown, the shape of the airbag impact head 2 can be designed with reference to the shape of the driver's and front passenger's airbags or side airbags, which can better fit the collision contact mode between the head 202 and the airbag or side airbag in an actual automobile collision test, further improve the accuracy of the injury evaluation of the dummy head structure 200 in the automobile collision test, and ensure the validity of the automobile collision test data.

[0051] According to the dummy head structure calibration device 100 for automobile collision test in the embodiment of the utility model, the pendulum suspension system 1 includes an impact pendulum 11 and a hanging rope 12, and the airbag impact head 2 is arranged on the impact pendulum 11. When the impact pendulum 11 is in a free hanging state, the hanging rope 12 restrains the impact pendulum 11, and the airbag impact head 2 is located on the side of the impact pendulum 11 facing the head 202 and opposite to the head 202, so that the impact pendulum 11 drives the airbag impact head 2 to collide with the head 202. Compared with the prior art, it is more in line with the collision contact mode between the head 202 and the airbag or side air curtain in the actual automobile collision test, and can more fully verify the bio-simulation degree of the dummy head structure 200 used, improve the accuracy of the injury evaluation of the dummy head structure 200 in the automobile collision test, and ensure the validity of the automobile collision test data.

[0052] In some embodiments of the present invention, refer to the attached Figure 1 and attached Figure 2 As shown, a speed measuring device is provided on the impact pendulum 11, and the speed measuring device is used to measure the movement speed of the impact pendulum 11, so as to collect relevant data of the impact pendulum 11, calculate relevant data of the airbag impact head 2 impacting the head 202, so as to adjust the preset height and initial impact kinetic energy of the impact pendulum 11, and improve the relevant performance of the dummy head structure calibration device 100 for automobile collision test.

[0053] In a further embodiment of the present invention, Figure 1 and Figure 2As shown, the speed measuring device includes: a laser transmitter and a speed measuring grid 111. The laser emitted by the laser transmitter extends toward the impact pendulum 11. The speed measuring grid 111 has a plurality of bars 112. The plurality of bars 112 are arranged at intervals in the direction from the impact pendulum 11 to the dummy head structure 200. When the impact pendulum 11 is in a free-hanging state, the plurality of bars 112 block the laser in turn, so that the movement speed of the impact pendulum 11 can be calculated through data such as the spacing between the plurality of bars 112 of the speed measuring grid 111 and the time interval for the plurality of bars 112 to block the laser, so as to facilitate adjustment and improvement of relevant data of the dummy head structure calibration device 100 for automobile collision test.

[0054] Optionally, the laser emitter is a laser emission timer, and there may be two laser emission timers disposed on both sides of the speed measuring grid 111 , and both laser emission timers emit lasers in the direction of the speed measuring grid 111 .

[0055] In some embodiments of the present invention, refer to the attached Figure 1 and attached Figure 2 As shown, the airbag impact head 2 and the impact pendulum 11 are detachable, there are multiple airbag impact heads 2, and the specifications of the multiple airbag impact heads 2 are different. The impact pendulum 11 can be selectively connected to one of the airbag impact heads 2. According to the different dummy head structures 200, airbag impact heads 2 with different specifications can be selected to match different tests of collision with the head 202, thereby improving the compatibility and utilization rate of the dummy head structure calibration device 100 for automobile collision tests and meeting the different usage requirements of users.

[0056] Preferably, the shapes and specifications of the multiple airbag impact heads 2 can refer to the design of the driver's and passenger's airbags or side airbags, which can better fit the collision contact mode between the head 202 and the airbag or side airbag in the actual car collision test, further improve the accuracy of the injury evaluation of the dummy head structure 200 in the car collision test, and ensure the validity of the car collision test data. For example, when performing a car head-on collision test calibration, such as Figure 1 As shown, the shape and specification of the airbag impact head 2 can refer to the design of the main driver and the co-driver's airbags. The airbag impact head 2 impacts the head 202 from the front. When the vehicle side impact test is calibrated, as shown in FIG. Figure 2 As shown, the shape and specification of the airbag impact head 2 can refer to the side air curtain design, and the airbag impact head 2 impacts from the side of the head 202.

[0057] Specifically, the airbag impact head 2 and the impact pendulum 11 are connected by threads, one of the airbag impact head 2 and the impact pendulum 11 has an external thread and the other has an internal thread, so as to realize a detachable connection between the airbag impact head 2 and the impact pendulum 11, which is convenient for replacing airbag impact heads 2 of different specifications.

[0058] In some embodiments of the present invention, refer to the attached Figure 1 and attached Figure 2 As shown, the airbag impact head 2 has an inflation port 21 for inflating air into the airbag impact head 2 or extracting air from the airbag impact head 2, so that the pressure inside the airbag impact head 2 can be changed to meet different usage requirements.

[0059] In some embodiments of the present invention, refer to the attached Figure 1 and attached Figure 2 As shown, the mounting structure 3 includes a column 31 and an adapter bracket 32. The lower end of the column 31 is placed on a horizontal plane and rigidly connected to the horizontal plane. The adapter bracket 32 ​​is arranged at the upper end of the column 31. The lower end of the neck 201 is suitable for connecting with the adapter bracket 32. The adapter bracket 32 ​​is used to adjust the direction of the head 202. By adjusting the direction of the head 202 to match different automobile collision tests, the compatibility and utilization rate of the dummy head structure calibration device 100 for automobile collision tests are improved.

[0060] In a further embodiment of the present invention, refer to the attached Figure 3 , Attachment Figure 5 and attached Figure 6 As shown, the adapter bracket 32 ​​is used to adjust the head 202 to rotate along the first axis, the second axis and the third axis respectively. The first axis, the second axis and the third axis are perpendicular to each other, so that the head 202 can rotate along multiple directions. Therefore, by changing and fixing the angle and direction of the head 202, different automobile collision tests can be matched, thereby improving the compatibility and utilization rate of the dummy head structure calibration device 100 for automobile collision tests.

[0061] In a further embodiment of the present invention, refer to the attached Figure 1 and attached Figure 2 As shown, the adapter bracket 32 ​​is rotatably connected to the column 31, and the rotation axis of the adapter bracket 32 ​​and the column 31 is the first axis, so that the head 202 can be controlled to rotate along the first axis, thereby increasing the adjustable range of the head 202, matching different automobile collision tests, and improving the compatibility and utilization rate of the dummy head structure calibration device 100 for automobile collision tests.

[0062] In a further embodiment of the present invention, Figure 4 and attached Figure 7 As shown, at least one of the adapter bracket 32 ​​and the column 31 is provided with an arc groove 311, and the adapter bracket 32 ​​and the column 31 are connected by a fastener, and the fastener is inserted into the arc groove 311, which can facilitate the connection and disassembly of the adapter bracket 32 ​​and the column 31, and facilitate the adjustment of the rotation angle of the head 202 along the first axis. It should be noted that the head 202 is first adjusted to the required angle on the first axis, and then the adapter bracket 32 ​​and the column 31 are fixed by the fastener to prevent the adapter bracket 32 ​​and the column 31 from rotating relative to each other again.

[0063] It is understandable that the arc groove 311 may be provided only on the adapter bracket 32 ​​; the arc groove 311 may be provided only on the column 31 ; or the arc groove 311 may be provided on both the adapter bracket 32 ​​and the column 31 .

[0064] In a specific example, see the attached Figure 7 , Attachment Figure 8 and attached Fig. 9 As shown, the column 31 includes a body 312, a first platform 313 and a second platform 314. The body 312 is arranged in the up-down direction (such as Figure 7 The first platform 313 and the second platform 314 are respectively located in the length direction of the body 312 (see the attached Figure 7 In the up-down direction, the cross-sectional areas of the first platform 313 and the second platform 314 are larger than the cross-sectional areas of the body 312, and the second platform 314 is rigidly connected to the horizontal plane to ensure the stability of the column 31. Figure 4 and Figure 7 As shown, two arc grooves 311 are provided on the area outside the relative area between the first platform 313 and the main body 312, and two arc grooves 311 are also provided on the adapter bracket 32. The two arc grooves 311 on the adapter bracket 32 ​​extend along the circumferential direction of the adapter bracket 32 ​​and are arranged at intervals. The two arc grooves 311 on the first platform 313 extend along the circumferential direction of the first platform 313 and are arranged at intervals. The arc grooves 311 of the adapter bracket 32 ​​and the arc grooves 311 of the first platform 313 are arranged relatively and correspond one to one. The fasteners pass through the arc grooves 311 on the adapter bracket 32 ​​and the first platform 313 in sequence to fix the adapter bracket 32 ​​and the column 31. The arc grooves 311 on both the adapter bracket 32 ​​and the column 31 can increase the relative rotation angle of the adapter bracket 32 ​​and the column 31, and expand the angle range of rotation of the head 202 along the first axis.

[0065] In a further embodiment of the present invention, refer to the attached Figure 1 , Attachment Figure 2 and attached Figure 3As shown, the adapter bracket 32 ​​includes a first adapter part 321, a second adapter part 322 and a third adapter part 323. The first adapter part 321 is connected to the column 31, and the rotation axis of the first adapter part 321 and the column 31 is the first axis. The second adapter part 322 is rotationally connected to the first adapter part 321, and the rotation axis of the second adapter part 322 and the first adapter part 321 is the second axis. The third adapter part 323 is rotationally connected to the second adapter part 322, and the rotation axis of the third adapter part 323 and the second adapter part 322 is the third axis. The lower end of the neck 201 is connected to the third adapter part 323, so that the dummy head structure 200 can be controlled to rotate along the first axis, the second axis and the third axis, thereby improving the adjustable range of the head 202, matching different automobile collision tests, and improving the compatibility and utilization rate of the dummy head structure calibration device 100 for automobile collision tests.

[0066] It should be noted that the first adapter portion 321 and the column 31, the second adapter portion 322 and the first adapter portion 321, and the third adapter portion 323 and the second adapter portion 322 are all connected by fasteners. After the dummy head structure 200 is adjusted to the required angles on the first axis, the second axis and the third axis, the first adapter portion 321 and the column 31, the second adapter portion 322 and the first adapter portion 321, and the third adapter portion 323 and the second adapter portion 322 are fixed by fasteners to prevent the first adapter portion 321 and the column 31, the second adapter portion 322 and the first adapter portion 321, and the third adapter portion 323 and the second adapter portion 322 from rotating relative to each other again.

[0067] In a further embodiment of the utility model, at least one of the first adapter portion 321 and the second adapter portion 322 is provided with a plurality of scale lines spaced apart in the circumferential direction of the second axis, which can intuitively show the rotation angle of the dummy head structure 200 along the second axis, facilitate adjustment of the rotation angle of the dummy head structure 200, improve the accuracy of adjustment of the dummy head structure 200, and ensure the accuracy of the dummy head structure calibration device 100 for automobile collision tests.

[0068] Furthermore, at least one of the second adapter portion 322 and the third adapter portion 323 is provided with a plurality of scale lines spaced apart in the circumferential direction along the third axis, which can intuitively show the rotation angle of the dummy head structure 200 along the third axis, facilitate the adjustment of the rotation angle of the dummy head structure 200, improve the accuracy of the adjustment of the dummy head structure 200, and ensure the accuracy of the dummy head structure calibration device 100 for the automobile collision test.

[0069] Furthermore, at least one of the first adapter portion 321 and the column 31 is provided with a plurality of scale lines spaced apart in the circumferential direction of the first axis, which can intuitively show the rotation angle of the dummy head structure 200 along the first axis, facilitate the adjustment of the rotation angle of the dummy head structure 200, improve the accuracy of the adjustment of the dummy head structure 200, and ensure the accuracy of the dummy head structure calibration device 100 for automobile collision tests.

[0070] In a further embodiment of the present invention, the first axis is along the vertical direction (such as Figure 1 The second axis and the third axis are parallel to the horizontal plane, which can facilitate the calculation and adjustment of the rotation angle and direction of the dummy head structure 200, thereby reducing the difficulty of debugging the dummy head structure calibration device 100 for automobile collision test.

[0071] In a further embodiment of the utility model, the column 31 is height-adjustable in the up and down directions, so as to meet different height requirements of the dummy head structure 200, match different automobile collision tests, and improve the compatibility and utilization rate of the dummy head structure calibration device 100 for automobile collision tests.

[0072] In some embodiments of the present invention, refer to the attached Figure 3 and attached Figure 4 As shown, a plurality of mounting holes 324 are provided at the upper end of the mounting structure 3, and the plurality of mounting holes 324 are arranged at intervals on the third adapter portion 323. The dummy head structure 200 is connected and fixed to the mounting structure 3 through fasteners and at least part of the mounting holes 324, which can ensure the reliability of the connection between the dummy head structure 200 and the mounting structure 3. In addition, the setting of the plurality of mounting holes 324 can be used to install different necks 201 and adapt to different dummy head structures 200, thereby matching different automobile collision tests, and further improving the compatibility and utilization rate of the dummy head structure calibration device 100 for automobile collision tests.

[0073] The utility model also provides a control method of the dummy head structure calibration device 100 for automobile collision test having the above-mentioned embodiment.

[0074] like Fig.11 As shown, the dummy head structure calibration device 100 for automobile collision test according to the embodiment of the utility model is the above-mentioned dummy head structure calibration device 100 for automobile collision test, and the control method includes:

[0075] The dummy head structure 200 is installed above the mounting structure 3 and arranged opposite to the airbag impact head 2 to ensure that the airbag impact head 2 can hit the dummy head structure 200 to avoid the airbag impact head 2 being offset, resulting in the dummy head structure 200 failing the calibration;

[0076] After the impact pendulum 11 is lifted to a preset height in a direction away from the dummy head structure 200, the impact pendulum 11 is released, and the impact pendulum 11 falls down, and under the constraint of the hanging rope 12, the impact pendulum 11 is restricted to drive the airbag impact head 2 to move in a direction close to the dummy head structure 200, so as to ensure that the airbag impact head 2 accurately hits the dummy head structure 200;

[0077] Acquire response parameters of the head 202 of the dummy head structure 200, such as collecting data such as acceleration response of the center of mass of the head 202;

[0078] Determine whether the response parameters meet the preset performance parameters, and compare the obtained response parameters with the preset performance parameters;

[0079] If satisfied, it is determined that the calibration of the dummy head structure 200 has been passed, and the biosimulation degree of the dummy head structure 200 is good, and can be used in actual automobile collision tests;

[0080] If it is not satisfied, the above steps are repeated after a preset stop time. When the dummy head structure 200 is calibrated, the skin of the dummy head structure 200 will be deformed to a certain extent after being impacted by the airbag impact head 2. Re-testing after a preset stop time can leave a certain amount of time for the skin of the dummy head structure 200 to slowly recover to its original state, thereby ensuring the accuracy of the re-test and avoiding the impact of the test results of the dummy head structure calibration device 100 for automobile collision tests due to the unrecovered skin of the dummy head structure 200. In a specific example, the preset stop time is 2 hours.

[0081] Furthermore, if the skin of the dummy head is damaged or its performance is degraded and it cannot pass the calibration, it is necessary to replace the skin of the dummy head and then test it again according to the above steps until it passes the calibration.

[0082] According to the control method of the dummy head structure calibration device 100 for automobile collision test in the embodiment of the utility model, by being provided with the above-mentioned dummy head structure calibration device 100 for automobile collision test, when in a free-falling state, compared with the prior art, it is more in line with the collision contact mode between the head 202 and the airbag or side air curtain in the actual automobile collision test, and can more fully verify the bio-simulation degree of the dummy head structure 200 used, improve the accuracy of the injury evaluation of the dummy head structure 200 in the automobile collision test, and ensure the validity of the automobile collision test data.

[0083] In some embodiments of the present invention, before the dummy head structure 200 is installed above the installation structure 3 and arranged opposite to the airbag impact head 2, the control method further includes:

[0084] The dummy head structure 200 is placed in an environment with a preset temperature and humidity and soaked for a preset soaking time, so that the skin of the dummy head structure 200 meets the requirements, improves the biosimulation of the dummy head structure 200, and further improves the accuracy of the injury evaluation of the dummy head structure 200 in the automobile collision test, thereby ensuring the validity of the automobile collision test data. In a specific example, the preset temperature is 18.9°C-25.6°C, the preset humidity is 10%-70%, and the soaking time is 4 hours.

[0085] In some embodiments of the present invention, refer to the attached Figure 1 and attached Figure 2 As shown, the mounting structure 3 includes a column 31 and an adapter bracket 32. The lower end of the column 31 is placed on a horizontal plane, and the adapter bracket 32 ​​is arranged at the upper end of the column 31. The lower end of the neck 201 is suitable for connecting with the adapter bracket 32. The adapter bracket 32 ​​is used to adjust the direction of the head 202. By adjusting the direction of the head 202 to match different automobile collision tests, the compatibility and utilization rate of the dummy head structure calibration device 100 for automobile collision tests are improved.

[0086] The dummy head structure 200 is installed above the installation structure 3 and arranged opposite to the airbag impact head 2, including:

[0087] The dummy head structure 200 is installed above the installation structure 3 and the angle of the dummy head structure 200 is adjusted to a set angle. By adjusting the angle of the dummy head structure 200 to match different automobile collision tests, the compatibility and utilization rate of the dummy head structure calibration device 100 for automobile collision tests are improved.

[0088] In a further embodiment of the present invention, refer to the attached Figure 1 and attached Figure 2 As shown, the airbag impact head 2 and the impact pendulum 11 are detachably connected, there are multiple airbag impact heads 2, and the specifications of the multiple airbag impact heads 2 are different. The impact pendulum 11 can be selectively connected to one of the airbag impact heads 2. According to the different dummy head structures 200, airbag impact heads 2 with different specifications can be selected to match different tests of collision with the head 202, thereby improving the compatibility and utilization rate of the dummy head structure calibration device 100 for automobile collision tests and meeting different user requirements. Before the impact pendulum 11 is raised to a preset height in a direction away from the dummy head structure 200, the control method further includes:

[0089] According to the angle of the dummy head structure 200, an airbag impact head 2 matching the dummy head structure 200 is selected and installed on the impact pendulum 11 to match different tests of collision with the head 202, thereby improving the compatibility and utilization rate of the dummy head structure calibration device 100 for automobile collision test and meeting different user requirements. For example, when performing a frontal collision test calibration, Figure 1 As shown, the shape and specification of the airbag impact head 2 can refer to the design of the main driver and the co-driver's airbags. The airbag impact head 2 impacts the head 202 from the front. When the vehicle side impact test is calibrated, as shown in FIG. Figure 2 As shown, the shape and specification of the airbag impact head 2 can refer to the side air curtain design, and the airbag impact head 2 impacts from the side of the head 202.

[0090] Further, see Attachment Figure 1 and attached Figure 2 As shown, air can be inflated into the airbag impact head 2 or air can be extracted from the airbag impact head 2 through the inflation port 21, so that the pressure inside the airbag impact head 2 can be changed to meet different usage requirements of users.

[0091] In some other embodiments of the present invention, calibration can be performed by dropping the dummy head structure 200 directly onto the surface of an airbag, an air curtain, or an airbag-like object.

[0092] In some other embodiments of the present invention, a transmitter may be used to launch the dummy head structure 200 onto the surface of an airbag, an air curtain, or an airbag-like object for calibration.

[0093] In some other embodiments of the present invention, the airbag or air curtain may be directly detonated to allow the airbag or air curtain to impact the dummy head structure 200 for calibration.

[0094] In other embodiments of the present invention, refer to the attached Fig.10 As shown, the dummy can be placed as a whole on a liftable rigid platform in a specific posture, and calibrated using the pendulum suspension system 1 and the airbag impact head 2 of the utility model.

[0095] Other structures and operations of the dummy head structure calibration device 100 and the control method for automobile collision test according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0096] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0097] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dummy head structure calibration device for automobile collision test, characterized in that: include: A pendulum suspension system, the pendulum suspension system comprising an impact pendulum and a hanging rope, the lower end of the hanging rope being connected to the impact pendulum; An airbag impact head, the airbag impact head is arranged on the impact pendulum; The mounting structure is placed on a horizontal plane and is used to install a dummy head structure, wherein the dummy head structure includes a neck and a head arranged above the neck, and when the impact pendulum is in a free-hanging state, the airbag impact head is located on a side of the impact pendulum facing the head and opposite to the head.

2. The dummy head structure calibration device for automobile collision test according to claim 1, characterized in that: The impact pendulum is provided with a speed measuring device, and the speed measuring device is used to measure the movement speed of the impact pendulum.

3. The dummy head structure calibration device for automobile collision test according to claim 2, characterized in that: The speed measuring device includes: a laser emitter and a speed measuring grid, the laser emitted by the laser emitter extends toward the impact pendulum, and the speed measuring grid has a plurality of bars. When the impact pendulum is in a free-hanging state, the plurality of bars sequentially block the laser emitted by the laser emitter.

4. The dummy head structure calibration device for automobile collision test according to claim 1, characterized in that: The airbag impact head and the impact pendulum are detachable, there are multiple airbag impact heads, the specifications of the multiple airbag impact heads are different, and the impact pendulum can be selectively connected to one of the airbag impact heads.

5. The dummy head structure calibration device for automobile collision test according to claim 1, characterized in that: The airbag impact head has an air filling port for filling air into the airbag impact head or extracting air from the airbag impact head.

6. The dummy head structure calibration device for automobile collision test according to claim 1, characterized in that: The mounting structure comprises: A column, the lower end of which is placed on a horizontal plane; An adapter bracket is arranged at the upper end of the column, the lower end of the neck is suitable for connecting with the adapter bracket, and the adapter bracket is used to adjust the direction of the head.

7. The dummy head structure calibration device for automobile collision test according to claim 6, characterized in that: The adapter bracket is used to adjust the head to rotate along the first axis, the second axis and the third axis respectively, and the first axis, the second axis and the third axis are perpendicular to each other.

8. The dummy head structure calibration device for automobile collision test according to claim 7, characterized in that: The adapter bracket is rotatably connected to the column, and the rotation axis of the adapter bracket and the column is the first axis.

9. The dummy head structure calibration device for automobile collision test according to claim 8, characterized in that: At least one of the adapter bracket and the column is provided with an arc-shaped groove, the adapter bracket and the column are connected by a fastener, and the fastener is passed through the arc-shaped groove.

10. The dummy head structure calibration device for automobile collision test according to claim 7, characterized in that: The adapter bracket comprises: A first adapter portion, the first adapter portion is connected to the column; a second adapter portion, the second adapter portion being rotatably connected to the first adapter portion, and a rotation axis between the second adapter portion and the first adapter portion being the second axis; The third adapter part is rotatably connected with the second adapter part, the rotation axis of the third adapter part and the second adapter part is the third axis, and the lower end of the neck is connected with the third adapter part.

11. The dummy head structure calibration device for automobile collision test according to claim 10, characterized in that: At least one of the first transition portion and the second transition portion is provided with a plurality of scale lines spaced apart along the circumferential direction of the second axis; and / or, at least one of the second transition portion and the third transition portion is provided with a plurality of scale lines spaced apart along the circumferential direction of the third axis; And / or, at least one of the first adapter portion and the column is provided with a plurality of scale lines spaced apart along the circumferential direction of the first axis.

12. The dummy head structure calibration device for automobile collision test according to claim 6, characterized in that: The column is height-adjustable in the up-and-down directions.

13. The dummy head structure calibration device for automobile collision test according to claim 1, characterized in that: A plurality of mounting holes are provided at the upper end of the mounting structure, and the dummy head structure is connected and fixed to at least some of the mounting holes via fasteners.

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