CN116380493A - Dummy calibration system, backward impact calibration equipment and calibration method thereof - Google Patents

Abstract

The invention discloses a dummy calibration system, backward impact calibration equipment and a calibration method thereof, which are used for vehicle collision tests. The test bed is provided with a sliding rail extending along a first direction; the seat model assembly is slidably arranged on the sliding rail along the first direction, and is suitable for placing a dummy; the impact pendulum of the impact device is positioned on one side of the seat model assembly along the first direction, the impact pendulum is positioned on the back side of the seat model assembly, and the impact pendulum is suitable for impacting the seat model assembly along the first direction; the first detection component is used for detecting a first specific response parameter generated by the impact of the impact pendulum on the seat model assembly. According to the backward impact calibration equipment provided by the embodiment of the invention, the reliability of the backward impact collision test result of the vehicle can be ensured, and the injury value of the vehicle passenger in the backward impact collision test of the vehicle can be further accurately evaluated.

Description

Dummy calibration system, backward impact calibration equipment and calibration method thereof

Technical Field

The invention relates to the technical field of vehicle safety detection, in particular to a dummy calibration system, backward impact calibration equipment and a calibration method thereof.

Background

In the related art, a dummy is often used for evaluating the injury of a vehicle passenger in a collision test, and in order to verify the biological simulation degree of the dummy, calibration equipment is required to calibrate the dummy. In the related art, the dummy is calibrated in many ways, but the calibration of the dummy (the side of the vehicle, which is close to the back of the vehicle occupant) is not involved, so that the reliability of the result of the vehicle backward impact collision test cannot be ensured, and the injury value of the vehicle occupant in the vehicle backward impact test cannot be accurately evaluated.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a backward impact calibration apparatus, which uses an impact pendulum to strike the back side of a seat model assembly in which a dummy is placed, and uses a first detection component to detect a first specific response parameter generated by the impact pendulum striking of the seat model assembly, so as to implement backward impact calibration of the dummy, and by using the backward impact calibration apparatus, whether the biological simulation degree of the dummy is qualified during backward impact can be tested, and the qualified dummy can be used in a vehicle backward impact (striking the side of the vehicle near the back of the dummy) crash test, so that the reliability of the result of the vehicle backward impact crash test can be ensured, and the injury value of a vehicle occupant in the vehicle backward impact crash test can be evaluated more accurately.

The invention also provides a dummy calibration system with the backward impact calibration equipment.

The invention further provides a calibration method of the backward impact calibration equipment.

According to an embodiment of the first aspect of the present invention, a backward impact calibration apparatus for a vehicle crash test, the backward impact calibration apparatus includes: the test bed is provided with a sliding rail extending along a first direction; a seat model assembly slidably disposed along a first direction on the slide rail, the seat model assembly being adapted to receive a dummy thereon; an impact device comprising an impact pendulum located on one side of the seat model assembly in the first direction and located on a back side of the seat model assembly, the impact pendulum being adapted to strike the seat model assembly in the first direction; a first detection component for detecting a first specific response parameter generated by the seat model assembly being impacted by the impact pendulum.

According to the backward impact calibration equipment provided by the embodiment of the invention, the impact pendulum is adopted to impact the back side of the seat model assembly for placing the dummy, the first detection component is used for detecting the first specific response parameter generated by the impact pendulum impact of the seat model assembly, the backward impact calibration of the dummy can be realized, whether the biological simulation degree of the dummy is qualified or not during the backward impact can be tested by using the backward impact calibration equipment, and the qualified dummy can be used in a vehicle backward impact (the side, close to the back of the dummy, of the impact vehicle) collision test, so that the reliability of the vehicle backward impact collision test result can be ensured, and the injury value of a vehicle passenger in the vehicle backward impact collision test can be further evaluated more accurately.

According to some embodiments of the invention, the first specific response parameter includes an acceleration of a seat model assembly, an acceleration of a head of the dummy, and a neck force of the dummy.

According to some embodiments of the invention, the first detection component is further configured to detect a speed of the impact pendulum and an acceleration of the impact pendulum striking the seat model assembly.

According to some embodiments of the invention, the seat model assembly comprises a seat model and a first cushioning energy absorber provided on a back side of the seat model, the impact pendulum being adapted to strike the first cushioning energy absorber.

According to some alternative embodiments of the present invention, the seat model includes a seat back assembly and a seat cushion assembly, the seat back assembly includes a seat back and a back support, the seat back is connected to a back side of the back support to support the seat back, the first cushion energy absorber is provided to the back support, the seat cushion assembly includes a seat cushion and a cushion support, the cushion support is connected to a back side of the seat cushion to support the seat cushion, the seat back is connected to the seat cushion, and at least one of the seat back and the seat cushion is adjustable in angle.

According to some alternative embodiments of the present invention, the seat back and the seat cushion are connected by a connection assembly, and the connection assembly has a locked state and an unlocked state; wherein, in the locking state, the connecting component is used for connecting and fixing the seat back and the seat cushion; in the unlocked state, at least one of the seat back and the seat cushion is rotatable to allow at least one of the seat back and the seat cushion to be angularly adjustable.

According to some alternative embodiments of the present invention, the connection assembly includes a connection block and a first locking member, the seat back is rotatably connected with the connection block and the seat back is fixedly connected with the connection block through the first locking member, the seat cushion is rotatably connected with the connection block and the seat cushion is fixedly connected with the connection block through the first locking member; in the locking state, the first locking piece is connected and fixed with the seat back and the connecting block, and the seat cushion and the connecting block; in the unlocked state, the seat back and the seat cushion are rotatable relative to the connection block.

According to some alternative embodiments of the invention, the seat model assembly includes a seat base, the seat model is provided to the seat base, and the connection block is provided to the seat base slidably along the first direction; wherein, in the locking state, the connecting block is fixedly connected with the seat base through a second locking piece; in the unlocked state, the connection block is slidable relative to the seat base in the first direction.

According to some alternative embodiments of the present invention, the seat back is formed with a first connecting hole, the first connecting hole extends along the height direction of the seat back, the backrest support is formed with a second connecting hole, the seat back is movable relative to the backrest support to adjust the relative position of the second connecting hole and the first connecting hole, and a third locking member is adapted to penetrate through the second connecting hole and the first connecting hole to connect and fix the seat back to the backrest support.

According to some alternative embodiments of the invention, the seat model assembly comprises a seat base, the seat model is arranged on the seat base, a first sliding block is arranged on the bottom surface of the backrest support, the backrest support is slidably arranged on the seat base along the first direction through the first sliding block, and the backrest support is suitable for being fixedly connected to the seat base through a fourth locking piece.

According to some alternative embodiments of the invention, the seat model assembly comprises a seat base, the seat model is arranged on the seat base, the cushion support comprises a supporting frame and a second sliding block, the upper end of the supporting frame is rotatably connected with the seat cushion, the lower end of the supporting frame is rotatably connected with the second sliding block, the cushion support is slidably arranged on the seat base along the first direction through the second sliding block, and the second sliding block is suitable for being fixedly connected with the seat base through a fifth locking piece.

According to some embodiments of the invention, the rearward impact calibration apparatus further comprises a second cushioning energy absorber provided on the test bench on a side of the seat model assembly remote from the impact pendulum.

A dummy calibration system according to an embodiment of the second aspect of the present invention is used for a vehicle collision test, and includes: the head calibration device comprises a hanging frame, a rigid platform and a second detection component, wherein the head model is suitable for being hung on the hanging frame through a release structure, when the head model is released by the release structure, the head model freely falls to the rigid platform, and the second detection component is used for detecting a second specific response parameter generated by the head model freely falling to the rigid platform; the neck calibration device comprises a device bracket, a swing arm, a third buffering energy absorber and a third detection component, wherein one end of the swing arm is in swing connection with the device bracket, the head and neck model is suitable for being arranged at the other end of the swing arm, the swing arm is suitable for moving from a set height to collide with the third buffering energy absorber, and the third detection component is used for detecting a third specific response parameter generated by the head and neck model when the swing arm moves from the set height to collide with the third buffering energy absorber; the abdomen calibration device comprises a supporting table, a pressurizing assembly and a fourth detecting assembly, wherein an abdomen model is suitable for being installed on the supporting table, the pressurizing assembly is arranged above the abdomen model and used for applying downward pressure to the abdomen model, and the fourth detecting assembly is used for detecting the compression amount of the abdomen model; the backward impact calibration device is according to an embodiment of the first aspect of the present invention.

According to the dummy calibration system provided by the embodiment of the invention, the head model, the head and neck model, the abdomen model and the dummy are respectively calibrated by adopting the head calibration equipment, the neck calibration equipment, the abdomen calibration equipment and the backward impact calibration equipment, so that the biological simulation of the dummy can be further improved, the reliability of the backward impact collision test result of the vehicle can be ensured, and the injury value of a vehicle passenger in the backward impact collision test of the vehicle can be further accurately evaluated.

According to a calibration method of a backward impact calibration device according to an embodiment of the third aspect of the present invention, the backward impact calibration device is a backward impact calibration device according to an embodiment of the first aspect of the present invention, the calibration method includes: calibrating the condition that no dummy is placed on the seat model assembly; determining that the calibration of the condition of not placing the dummy is qualified; calibrating the condition of placing the dummy on the seat model assembly; and judging whether the calibration of the dummy placement condition is qualified.

According to the calibration method of the backward impact calibration equipment, disclosed by the embodiment of the invention, the backward impact calibration equipment without the dummy is calibrated, so that the reliability of the backward impact calibration equipment can be ensured; then placing the dummy on the backward impact calibration equipment with qualified calibration, so that the biological simulation degree of the dummy can be further improved; therefore, the reliability of the vehicle backward impact collision test result can be ensured, and the injury value of the vehicle passenger in the vehicle backward impact collision test can be accurately evaluated.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic illustration of a backward impact calibration apparatus according to some embodiments of the present invention;

FIG. 2 is a schematic illustration of the seat mold assembly of FIG. 1;

FIG. 3 is a schematic view of another angle of the seat mold assembly of FIG. 1;

FIG. 4 is a front view of the seat mold assembly of FIG. 1;

FIG. 5 is a top view of the seat mold assembly of FIG. 1;

FIG. 6 is a schematic diagram of a head calibration device in a dummy calibration system according to some embodiments of the invention calibrating a head model;

FIG. 7 is a schematic diagram of an abdomen calibration device calibrating an abdomen model in a dummy calibration system according to some embodiments of the invention;

figure 8 is a schematic view of a neck calibration device (lumbar calibration device) in a dummy calibration system according to some embodiments of the invention;

FIG. 9 is a partial schematic view of the neck calibration apparatus of FIG. 8 calibrating a head and neck model according to some embodiments of the invention;

Figure 10 is a partial schematic view of the lumbar calibration apparatus of figure 8 calibrating a lumbar model in accordance with some embodiments of the present invention.

Reference numerals:

100. a backward impact calibration device;

11. a slide rail; 12. a second cushioning energy absorber; 13. a dummy;

20. a seat model assembly; 2. a seat model; 21. a seat back assembly; 211. a seat back; 212. a backrest support; 213. a first slider; 214. a first connection hole; 22. a seat cushion assembly; 221. a seat cushion; 222. a cushion support; 223. a support frame; 224. a second slider; 23. a seat base; 231. a chute; 24. a first cushioning energy absorber;

30. an impact device; 3. impact pendulum;

40. a connection assembly; 4. a connecting block;

50. a head calibration device; 51. a hanging frame; 52. a rigid platform; 53. a head model; 54. a release structure; 541. a hanging rope;

60. neck calibration equipment; 61. an equipment rack; 62. swing arms; 63. a head and neck model; 631. simulating a head model; 632. a neck model; 64. an angle sensor;

70. abdomen calibration equipment; 71. a support table; 72. a pressurizing assembly; 721. a rigid plate; 722. an additional mass; 73. an abdomen model;

80. lumbar vertebrae calibration equipment; 81. lumbar model; 811. a lumbar model; 812. a buttock model.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

A backward impact calibration apparatus 100 according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 10.

Referring to fig. 1 to 5, the rear impact calibration apparatus 100 is used for a vehicle collision test in which a dummy 13 is used for evaluating injuries suffered by a vehicle occupant in the vehicle rear impact collision test, and the dummy 13 is calibrated by the rear impact calibration apparatus 100 in order to verify the biological simulation degree of the dummy 13. If the calibration of the dummy 13 is qualified, the biological simulation degree of the dummy 13 can be judged to meet the test requirement, and the method can be used for vehicle collision tests. Wherein, the vehicle is impacted by a backward impact, and the backward impact is used for impacting one side of the vehicle, which is close to the back of a vehicle occupant; in the test, a backward impact refers to striking the side of the seat mold assembly 20 that is adjacent to the back of the dummy 13.

The rearward impact calibration apparatus 100 includes a test bed, a seat model assembly 20, an impact device 30, and a first detection component. The test bench is provided with a slide rail 11 extending in a first direction (for example, refer to the e1 direction in the drawing), the seat model assembly 20 may be provided on the slide rail 11, and the seat model assembly 20 may slide on the slide rail 11 in the first direction. The seat mold assembly 20 is adapted to receive the dummy 13, and the dummy 13 is slidable along the slide rail 11 along the first direction along with the seat mold assembly 20. The impact device 30 comprises an impact pendulum 3, the impact pendulum 3 being located on one side of the seat mould assembly 20 in a first direction, and the impact pendulum 3 being located on the back side of the seat mould assembly 20, the impact pendulum 3 being adapted to strike the seat mould assembly 20 in the first direction such that the seat mould assembly 20 can slide on the slide rail 11 in the first direction. When the dummy 13 is calibrated by the backward impact calibration apparatus 100, the dummy 13 is placed on the seat model assembly 20, the impact pendulum 3 can be released from the high place, and the impact pendulum 3 can strike the back side of the seat model assembly 20 in the first direction.

The first detection component is configured to detect a first specific response parameter generated by the seat model assembly 20 being impacted by the impact pendulum 3, and the first specific response parameter may be used to determine whether the dummy 13 on the seat model assembly 20 is acceptable. If the first specific response parameter meets the expected requirement, the dummy 13 is calibrated to be qualified; if the first specific response parameter does not meet the expected requirement, it may be that the equipment error of the backward impact calibration equipment 100 or the humidity and humidity of the test environment affect the first specific response parameter of the backward impact calibration of the dummy 13, and after a certain time interval, the calibration of the dummy 13 on the seat model assembly 20 may be performed again, and if the first specific response parameter does not meet the expected requirement, the calibration of the dummy 13 is not qualified. The qualified dummy 13 can be used in a vehicle backward impact collision test, so that the reliability of the vehicle backward impact collision test result can be ensured, and the injury value of a vehicle passenger in the vehicle backward impact collision test can be accurately evaluated. For example, the first specific response parameters may include the acceleration of the seat model assembly 20, the head acceleration of the dummy 13, and the neck force of the dummy 13.

For example, the dummy 13 calibrated by the backward impact calibration apparatus 100 may be a child dummy 13, and the child dummy 13 needs to sit on a safety seat when sitting on a vehicle, and the safety seat of the child dummy 13 may be installed backward, that is, the face of the child dummy 13 faces the tail of the vehicle. The calibrated child dummy 13 can be used in a vehicle front collision test, and the child dummy 13 can be used for evaluating the damage to a safety seat installed in a backward riding manner in the vehicle front collision test.

According to the backward impact calibration device 100 provided by the embodiment of the invention, the impact pendulum 3 is adopted to impact the back side of the seat model assembly 20 on which the dummy 13 is placed, the first specific response parameter generated by the impact of the impact pendulum 3 on the seat model assembly 20 is detected by using the first detection component, the backward impact calibration of the dummy 13 can be realized, whether the biological simulation degree of the dummy 13 is qualified during the backward impact can be tested by using the backward impact calibration device 100, the qualified dummy 13 can be used in a vehicle backward impact (the side of the vehicle which is impacted on the back of the dummy 13) impact test, so that the reliability of the vehicle backward impact test result can be ensured, and the injury value of a vehicle passenger in the vehicle backward impact test can be more accurately evaluated.

According to some embodiments of the present invention, referring to fig. 1, the first specific response parameters include the acceleration of the seat model assembly 20, the head acceleration of the dummy 13, and the neck stress of the dummy 13, and whether the calibration of the dummy 13 is acceptable can be determined by detecting the acceleration of the seat model assembly 20, the head acceleration of the dummy 13, and the neck stress of the dummy 13. If the data of the acceleration of the seat model assembly 20, the head acceleration of the dummy 13 and the neck stress of the dummy 13 meet the expected requirements, the backward impact calibration of the dummy 13 is qualified; if the data of the acceleration of the seat model assembly 20, the head acceleration of the dummy 13, and the neck stress of the dummy 13 do not meet the expected requirements, the backward impact calibration of the dummy 13 is failed.

For example, the backward impact calibration device 100 without the dummy 13 may be calibrated first, the first specific response parameter may include the acceleration of the seat model assembly 20, and if the data of the acceleration of the seat model assembly 20 meets the expected requirement, the backward impact calibration of the backward impact calibration device 100 is qualified; the dummy 13 may be placed on the seat model assembly 20 to calibrate the backward impact of the dummy 13, and the first specific response parameter may include the acceleration of the seat model assembly 20, the acceleration of the head of the dummy 13, and the neck stress of the dummy 13, and if the data of the acceleration of the seat model assembly 20, the acceleration of the head of the dummy 13, and the neck stress of the dummy 13 meet the expected requirements, the backward impact calibration of the dummy 13 is qualified.

According to some embodiments of the present invention, referring to fig. 1, the first detecting component is further configured to detect the speed of the impact pendulum 3 and the acceleration of the impact pendulum 3 striking the seat model assembly 20, and by providing the first detecting component, the speed and the acceleration of the impact pendulum 3 can be conveniently collected, so as to determine whether the speed and the acceleration of the impact pendulum 3 meet the expected requirements. If the speed of the impact pendulum 3 and the acceleration of the impact pendulum 3 impacting the seat model assembly 20 meet the expected requirements, the backward impact calibration of the backward impact calibration device 100 is qualified; if the speed of the impact pendulum 3 and the acceleration of the impact pendulum 3 striking the seat model assembly 20 do not meet the expected requirements, the backward impact calibration of the dummy 13 is not acceptable.

For example, the first detection component may include a speed sensor and an acceleration sensor, where the acceleration sensor is disposed on a side of the impact pendulum 3 near the seat model assembly 20, and the acceleration sensor may collect an acceleration of the impact pendulum 3 when it impacts the seat model assembly 20; the impact force of the impact pendulum 3 can also be calculated by the mass of the impact pendulum 3 and the acceleration of the impact pendulum 3.

1-5, the seat model assembly 20 includes a seat model 2 and a first cushioning energy absorber 24, the first cushioning energy absorber 24 being disposed on a back side of the seat model 2, the impact pendulum 3 being adapted to strike the first cushioning energy absorber 24, the first cushioning energy absorber 24 being operable to cushion the impact of the impact pendulum 3 received by the seat model 2 and being operable to protect the seat model 2; the first buffer absorber 24 can prevent the impact pendulum 3 from directly striking the seat model 2, resulting in deformation of the seat model 2.

According to some alternative embodiments of the present invention, referring to fig. 1-5, a seat model 2 includes a seat back assembly 21 and a seat cushion assembly 22, e.g., the seat back assembly 21 and the seat cushion assembly 22 may be connected by a connection assembly 40. The seat back assembly 21 includes a seat back 211 and a back support 212, the seat back 211 being coupled to a back side of the back support 212, the back support 212 being configured to support the seat back 211, and the first cushion absorber 24 being disposed on the back support 212. The seat cushion assembly 22 includes a seat cushion 221 and a cushion support 222, the cushion support 222 is coupled to a back side of the seat cushion 221, the cushion support 222 can support the seat cushion 221, the seat back 211 is coupled to the seat cushion 221, for example, the seat back 211 and the seat cushion 221 can be coupled by a coupling assembly 40. At least one of the angle of the seat back 211 and the seat cushion 221 may be adjustable, and the angle between the seat back 211 and the horizontal line may be adjustable; or the angle between the seat cushion 221 and the seat back 211 can be adjusted, and the included angle between the seat cushion 221 and the horizontal line can be adjusted; the angle between the seat back 211 and the seat cushion 221 may be adjustable. At least one angle in the seat back 211 and the seat cushion 221 is adjustable, the angle between the seat back 211 and the seat cushion 221 can be adjusted, the included angle between the seat back 211 and the horizontal line can be adjusted, the included angle between the seat cushion 221 and the horizontal line can be adjusted, the dummy 13 with different statures can be conveniently used, and the reliability of the biological simulation degree of the dummy 13 can be improved.

According to some alternative embodiments of the present invention, referring to fig. 1-5, the seat back 211 and the seat cushion 221 are connected by a connection assembly 40, and the connection assembly 40 has a locked state and an unlocked state. Wherein, in the locked state, the connecting assembly 40 connects and fixes the seat back 211 and the seat cushion 221, and the angle between the seat back 211 and the seat cushion 221 is not adjustable. In the unlocked state, at least one of the seat back 211 and the seat cushion 221 is rotatable so that at least one angle of the seat back 211 and the seat cushion 221 is adjustable, and an angle between the seat back 211 and the seat cushion 221 can be adjusted; it may be that the seat back 211 is rotatable so that an angle between the seat back 211 and the seat cushion 221 is adjustable; the seat cushion 221 may be rotatable so that an angle between the seat back 211 and the seat cushion 221 is adjustable; it is also possible that both the seat back 211 and the seat cushion 221 are rotatable so that the angle between the seat back 211 and the seat cushion 221 is adjustable.

When the connection assembly 40 is in the locked state, the connection assembly 40 can be adjusted from the locked state to the unlocked state when the angle between the seat back 211 and the seat cushion 221 needs to be adjusted, so that the angle between the seat back 211 and the seat cushion 221 can be adjusted; when the angular adjustment between the seat back 211 and the seat cushion 221 is completed, the connection assembly 40 may be adjusted from the unlocked state to the locked state such that the angle between the seat back 211 and the seat cushion 221 is fixed.

According to some alternative embodiments of the present invention, referring to fig. 1 to 5, the connection assembly 40 includes a connection block 4 and a first locking member, the seat back 211 is rotatably connected with the connection block 4 and the seat back 211 is fixedly connected with the connection block 4 through the first locking member, the seat cushion 221 is rotatably connected with the connection block 4 and the seat cushion 221 is fixedly connected with the connection block 4 through the first locking member, and an angle between the seat back 211 and the seat cushion 221 can be fixed by providing the first locking member. For example, the first locking member may be a screw.

Wherein, in the locked state, the first locking member connects and fixes the seat back 211 and the connecting block 4 and the seat cushion 221 and the connecting block 4, the seat back 211 and the seat cushion 221 are not rotatable with respect to the connecting block 4, and the angle between the seat back 211 and the seat cushion 221 is fixed. In the unlocked state, the seat back 211 and the seat cushion 221 are rotatable with respect to the connection block 4, and the angle between the seat back 211 and the seat cushion 221 is adjustable. The first locking piece is used for connecting and fixing the seat back 211 and the connecting block 4 and the seat cushion 221 and the connecting block 4, so that the angle between the seat back 211 and the seat cushion 221 can be conveniently adjusted, and the seat back 211 and the connecting block 4 and the seat cushion 221 and the connecting block 4 can be conveniently fixed.

In the locked state, when the angle between the seat back 211 and the seat cushion 221 needs to be adjusted, the first locking member may be adjusted, the connection assembly 40 may be adjusted from the locked state to the unlocked state, and the seat back 211 and the seat cushion 221 may be rotated to adjust the angle between the seat back 211 and the seat cushion 221; when the angular adjustment between the seat back 211 and the seat cushion 221 is completed, the first locking member may be adjusted to adjust the connection assembly 40 from the unlocked state to the locked state such that the angle between the seat back 211 and the seat cushion 221 is fixed.

For example, a third connection hole may be formed in the seat back 211, a fourth connection hole may be formed in the connection block 4, a fifth connection hole may be formed in the seat cushion 221, and the first locking member may be inserted through the third connection hole, the fourth connection hole, and the fifth connection hole to connect the seat back 211, the seat cushion 221, and the connection block 4. The first locking member may be a screw, and when the angle between the seat back 211 and the seat cushion 221 needs to be adjusted in the locked state, the first locking member may be unscrewed to adjust the seat back 211 and the seat cushion 221 to the unlocked state, and the seat back 211 and the seat cushion 221 may be rotated to adjust the angle between the seat back 211 and the seat cushion 221; when the angle adjustment between the seat back 211 and the seat cushion 221 is completed, the first lock member may be tightened to adjust the seat back 211 and the seat cushion 221 to a locked state such that the angle between the seat back 211 and the seat cushion 221 is fixed.

According to some alternative embodiments of the present invention, referring to fig. 1-5, a seat mold assembly 20 includes a seat base 23, a seat mold 2 is provided on the seat base 23, a connection block 4 is provided on the seat base 23, and the connection block 4 is slidable on the seat base 23 in a first direction. Wherein, in the locked state, the connecting block 4 is fixedly connected to the seat base 23 through the second locking member, and the connecting block 4 cannot slide on the seat base 23. In the unlocked state, the connection block 4 is slidable in a first direction relative to the seat base 23, and the position of the connection block 4 relative to the seat base 23 can be adjusted. In the locked state, when the position of the connecting block 4 needs to be adjusted, the second locking member can be adjusted, the connecting block 4 is adjusted from the locked state to the unlocked state, and the connecting block 4 can slide along the first direction relative to the seat base 23; when the adjustment of the position of the connection block 4 is completed, the second locking member may be adjusted to adjust the connection block 4 from the unlocked state to the locked state, and the second locking member may fix the connection block 4 to the seat base 23.

For example, a slide groove 231 extending in the first direction is formed on the seat base 23, a top wall of the slide groove 231 is provided on a side of the slide groove 231 near the connection block 4, and an escape opening is formed on the top wall; the sixth connecting hole can be formed on the connecting block 4, the second locking member can comprise a sliding base, a connecting column and a screw cap, the connecting column is provided with external threads, the screw cap is provided with internal threads, and the screw cap can be in threaded fit with the connecting column. The sliding base is slidably accommodated in the chute 231 along the first direction, the connecting column extends upwards through the avoidance opening to penetrate through the sixth connecting hole, and the nut is in threaded fit with the connecting column, so that the connecting block 4 is fixedly connected to the seat base 23. When the position of the connecting block 4 relative to the seat base 23 needs to be adjusted, the nut can be unscrewed, the connecting block 4 is adjusted from a locking state to an unlocking state, and in the unlocking state, the upper surface of the sliding base is not in contact with the top wall of the sliding groove 231, and the sliding base can slide along the sliding groove 231, namely the connecting block 4 can slide along the first direction relative to the seat base 23; after the position adjustment of the connection block 4 relative to the seat base 23 is completed, the nut can be screwed down, so that the upper surface of the sliding base abuts against the top wall of the sliding groove 231, and the connection block 4 can be connected and fixed on the seat base 23.

According to some alternative embodiments of the present invention, referring to fig. 1 to 5, a first coupling hole 214 is formed in the seat back 211, the first coupling hole 214 extends in a height direction of the seat back 211, a second coupling hole is formed in the back support 212, the seat back 211 is movable with respect to the back support 212 to adjust a relative position of the second coupling hole and the first coupling hole 214, and a third locking member is adapted to penetrate the second coupling hole and the first coupling hole 214 to couple and fix the seat back 211 to the back support 212 such that an angle between the seat back 211 and the back support 212 is fixed. When it is necessary to adjust the angle between the seat back 211 and the back support 212, the third locking member may be adjusted such that the seat back 211 and the back support 212 are not fixed, the seat back 211 is movable relative to the back support 212, the angle between the seat back 211 and the back support 212 may be adjusted, and after the angle adjustment between the seat back 211 and the back support 212 is completed, the third locking member may be adjusted such that the seat back 211 is fixed to the back support 212. For example, the third locking member may be a screw.

According to some alternative embodiments of the present invention, referring to fig. 1-5, the seat mold assembly 20 includes a seat base 23, the seat mold 2 is disposed on the seat base 23, a first slider 213 is disposed on a bottom surface of the backrest support 212, the backrest support 212 is slidably disposed on the seat base 23 along a first direction by the first slider 213, and the backrest support 212 is adapted to be fixedly coupled to the seat base 23 by a fourth locking member. The first slider 213 may be fixed to the seat base 23 by adjusting the fourth locking member, and thus the back support 212 may be fixed to the seat base 23, the back support 212 being not slidable on the seat base 23 in the first direction. When the position of the back support 212 relative to the seat base 23 needs to be adjusted, the fourth locking member is adjusted to unseat the first slider 213 from the seat base 23 such that the back support 212 can slide on the seat base 23 in the first direction. For example, the fourth locking member may be a screw.

For example, the fourth locking member connects and fixes the first slider 213 to the seat base 23 in the same manner as the second locking member connects and fixes the connection block 4 to the seat base 23.

According to some alternative embodiments of the present invention, referring to fig. 1-5, the seat mold assembly 20 includes a seat base 23, the seat mold 2 is provided on the seat base 23, the seat cushion support 222 includes a support frame 223 and a second slider 224, an upper end of the support frame 223 is rotatably connected to the seat cushion 221, a lower end of the support frame 223 is rotatably connected to the second slider 224, the seat cushion support 222 is slidably provided on the seat base 23 along a first direction through the second slider 224, and the second slider 224 is adapted to be fixedly connected to the seat base 23 through a fifth lock. The second slider 224 may be fixed to the seat base 23 by adjusting the fifth lock, and thus the cushion support 222 may be fixed to the seat base 23, and the cushion support 222 may not be slidable on the seat base 23 in the first direction. When the position of the support bracket 223 relative to the seat base 23 needs to be adjusted, the second slider 224 can be unsecured from the seat base 23 by adjusting the fifth lock, so that the cushion support 222 can slide on the seat base 23 in the first direction. For example, the fifth locking member may be a screw.

For example, the fifth lock is connected to and secures the second slider 224 to the seat cushion support 222 in the same manner as the second lock is connected to and secures the connecting block 4 to the seat base 23.

For example, when it is necessary to adjust the angle between the seat back 211 and the seat cushion 221, the first lock member may be adjusted so that the seat back 211 and the seat cushion 221 are rotatable with respect to the connection block 4; the third retaining member may be adjusted so that the seat back 211 is movable relative to the back support 212; the fourth locking member may be adjusted so that the back support 212 may slide on the seat base 23 in the first direction; the fifth lock may be adjusted so that the seat cushion support 222 may slide on the seat base 23 in the first direction, and eventually the angular adjustment between the seat back 211 and the seat cushion 221 may be completed.

For another example, when it is desired to adjust the position of the seat mold assembly 20 relative to the seat base 23, the second, fourth, and fifth locking members may be adjusted such that the seat mold assembly 20 may slide on the seat base 23 in the first direction.

According to some embodiments of the present invention, referring to fig. 1, the backward impact calibration apparatus 100 further includes a second buffer energy absorber 12, where the second buffer energy absorber 12 is disposed on the side of the track 11 away from the impact pendulum 3 of the seat mold assembly 20, preventing the seat mold assembly 20 from sliding off the track 11. The impact pendulum 3 impacts the back side of the seat mold assembly 20 in the first direction, the seat mold assembly 20 can slide on the slide rail 11 in the first direction, a second cushioning energy absorber 12 is disposed on the side of the seat mold assembly 20 away from the impact pendulum 3, the second cushioning energy absorber 12 can prevent the seat mold assembly 20 from sliding on the slide rail 11 in the first direction, and the seat mold assembly 20 can be prevented from sliding off the slide rail 11.

Referring to fig. 6 to 10, a dummy 13 calibration system according to an embodiment of the second aspect of the present invention is used for a vehicle crash test, the dummy 13 calibration system including a head calibration device 50, a neck calibration device 60, an abdomen calibration device 70, and a rear impact calibration device 100. The head calibration device 50 comprises a suspension frame 51, a rigid platform 52 and a second detection assembly, the head model 53 is suitable for being suspended on the suspension frame 51 through a release structure 54, for example, the release structure 54 can comprise an electromagnet and a suspension rope 541, the suspension rope 541 can suspend the head model 53, an electromagnet can be arranged on the suspension rope 541, an electromagnet can be arranged on the suspension frame 51, and the electromagnet is electrified, so that the two electromagnets are attracted, and the head model 53 can be suspended on the suspension frame 51. When the head model 53 needs to be released, the electromagnets can be powered off, after the electromagnets are powered off, the two electromagnets can be separated, and the head model 53 can be separated from the hanging frame 51. When the release structure 54 releases the head model 53, the head model 53 freely falls to the rigid platform 52, and the second detection component is used for detecting a second specific response parameter generated by the head model 53 freely falling to the rigid platform 52. If the data of the second specific response parameter meets the expected requirement, the head calibration of the head model 53 is qualified; if the data of the second specific response parameter does not meet the expected requirement, the head calibration of the head model 53 can be performed again after a period of time, and if the data of the second specific response parameter does not meet the expected requirement, the head calibration of the head model 53 is not qualified.

For example, the second specific response parameter may comprise an acceleration of the head model 53 impinging on the rigid platform 52, the second detection component may be an acceleration sensor, and the second detection component may be provided on the head model 53.

The neck calibration device 60 comprises a device support 61, a swing arm 62, a third buffering energy absorber and a third detection assembly, one end of the swing arm 62 is connected with the device support 61 in a swinging way, the head and neck model 63 is suitable for being arranged at the other end of the swing arm 62, the swing arm 62 is suitable for moving from a set height to collide with the third buffering energy absorber, for example, the third buffering energy absorber can be arranged on the device support 61, and the third buffering energy absorber can prevent the swing arm 62 from directly colliding with the device support 61, so that the device support 61 deforms.

The third detection component is used for detecting a third specific response parameter generated by the head and neck model 63 when the swing arm 62 moves from the set height to impact with the third buffering energy absorber. If the data of the third specific response parameter meets the expected requirement, the neck calibration of the head and neck model 63 is qualified; if the data of the third specific response parameter does not meet the expected target, neck calibration can be performed on the head and neck model 63 again after a period of time, and if the data of the third specific response parameter does not meet the expected requirement, the neck calibration of the head and neck model 63 is not qualified. For example, the head and neck model 63 may include a simulated head model 631 and a neck model 632, and the simulated head model 631 may be connected to the neck model 632.

For example, the third specific response parameters may include the bending angle of the neck of the head and neck model 63, the impact force received by the neck model 632, and the acceleration of the swing arm 62 when it impacts the third cushioning energy absorber. A pair of angle sensors 64 may be provided at the head of the swing arm 62 and the head and neck model 63, and the angle sensors 64 are used to detect the bending angle of the neck.

For example, the dummy 13 calibration system may further include a lumbar calibration device 80, the lumbar calibration device 80 being identical to the neck calibration device 60. The waist and hip model 81 is suitable for being arranged at the other end of the swing arm 62, the swing arm 62 is suitable for moving from a set height to collide with the third buffering energy absorber, and the third detection component is used for detecting a fifth specific response parameter generated by the waist and hip model 81 when the swing arm 62 moves from the set height to collide with the third buffering energy absorber. The fifth specific response parameters may include the bending angle of the lumbar spine of the lumbar model 81, the impact force received by the neck model 632, and the acceleration of the swing arm 62 when it impacts the third cushioning energy absorber. The lumbar and hip model 81 may include a lumbar model 811 and a hip model 812, and the lumbar model 811 may be connected to the hip model 812.

The abdomen calibration device 70 comprises a support table 71, a pressurizing assembly 72, and a fourth detecting assembly, wherein the abdomen model 73 is suitable for being mounted on the support table 71, the pressurizing assembly 72 is arranged above the abdomen model 73 and is used for applying downward pressure to the abdomen model 73, the fourth detecting assembly is used for detecting the compression amount of the abdomen model 73, and if the compression amount of the abdomen model 73 meets the expected requirement, the abdomen calibration of the abdomen model 73 is qualified; if the compression amount of the abdomen model 73 does not meet the expected requirement, abdomen calibration can be performed on the head abdomen model 73 again after a period of time, and if the compression amount of the abdomen model 73 does not meet the expected requirement, the abdomen calibration of the abdomen model 73 is not qualified. For example, the fourth detection component may be a range finder. For example, the pressurizing assembly 72 may include a rigid plate 721 and an additional mass 722, and additional masses 722 of different weights may be selected according to different abdominal calibration methods.

The backward impact calibration apparatus 100 is a backward impact calibration apparatus 100 according to an embodiment of the first aspect of the present invention.

The biological simulation degree of the backward impact dummy 13 is verified, the head model 53, the head and neck model 63, the abdomen model 73 and the waist and hip model 81 of the dummy 13 can be detached from the dummy 13, the head model 53, the head and neck model 63, the abdomen model 73 and the waist and hip model 81 of the dummy 13 can be calibrated, and the backward impact calibration can be performed on the dummy 13. The biological simulation of the dummy 13 can be improved by calibrating each part of the dummy 13 and the whole dummy 13, so that the reliability of the vehicle backward impact collision test result can be ensured, and the injury value of a vehicle passenger in the vehicle backward impact test can be more accurately evaluated.

According to the dummy 13 calibration system provided by the embodiment of the invention, the head model 53, the head and neck model 63, the abdomen model 73 and the dummy 13 of the dummy 13 are respectively calibrated by adopting the head calibration equipment 50, the neck calibration equipment 60, the abdomen calibration equipment 70 and the backward impact calibration equipment 100, so that the biological simulation of the dummy 13 can be further improved, the reliability of the backward impact collision test result of a vehicle can be ensured, and the injury value of a vehicle passenger in the backward impact collision test of the vehicle can be further accurately evaluated.

According to the calibration method of the backward impact calibration apparatus 100 according to the embodiment of the third aspect of the present invention, the backward impact calibration apparatus 100 is the backward impact calibration apparatus 100 according to the embodiment of the first aspect of the present invention, the calibration method includes:

calibrating the condition that the dummy 13 is not placed on the seat model assembly 20;

determining that the calibration of the condition that the dummy 13 is not placed is qualified;

calibrating the condition of placing the dummy 13 on the seat model assembly 20;

and judging whether the calibration of the condition of placing the dummy 13 is qualified or not.

And (3) calibrating the condition that the dummy 13 is not placed on the seat model assembly 20, detecting the speed and the acceleration of the impact pendulum 3 and the acceleration of the seat model assembly 20, and if the data of the speed, the acceleration and the acceleration of the impact pendulum 3 and the acceleration of the seat model assembly 20 meet the expected requirements, calibrating the condition that the dummy 13 is not placed on the seat model assembly 20.

The dummy 13 is placed on the seat model assembly 20 which is qualified in calibration, and whether the calibration of the dummy 13 is qualified is judged by detecting the acceleration of the seat model assembly 20, the head acceleration of the dummy 13 and the neck stress of the dummy 13. If the data of the acceleration of the seat model assembly 20, the head acceleration of the dummy 13 and the neck stress of the dummy 13 meet the expected requirements, the backward impact calibration of the dummy 13 is qualified; if the data of the acceleration of the seat model assembly 20, the head acceleration of the dummy 13, and the neck stress of the dummy 13 do not meet the expected requirements, the backward impact calibration of the dummy 13 is failed. Firstly, calibrating the backward impact calibration equipment 100 without the dummy 13, so that the reliability of the backward impact calibration equipment 100 can be ensured; then the dummy 13 is placed on the backward impact calibration equipment 100 which is qualified in calibration, so that the biological simulation degree of the dummy 13 can be further improved; therefore, the reliability of the vehicle backward impact collision test result can be ensured, and the injury value of the vehicle passenger in the vehicle backward impact collision test can be accurately evaluated.

According to the calibration method of the backward impact calibration device 100, disclosed by the embodiment of the invention, the backward impact calibration device 100 without the dummy 13 is calibrated, so that the reliability of the backward impact calibration device 100 can be ensured; then the dummy 13 is placed on the backward impact calibration equipment 100 which is qualified in calibration, so that the biological simulation degree of the dummy 13 can be further improved; therefore, the reliability of the vehicle backward impact collision test result can be ensured, and the injury value of the vehicle passenger in the vehicle backward impact collision test can be accurately evaluated.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. A backward impact calibration apparatus for a vehicle crash test, the backward impact calibration apparatus comprising:

the test bed is provided with a sliding rail extending along a first direction;

a seat model assembly slidably disposed along a first direction on the slide rail, the seat model assembly being adapted to receive a dummy thereon;

an impact device comprising an impact pendulum located on one side of the seat model assembly in the first direction and located on a back side of the seat model assembly, the impact pendulum being adapted to strike the seat model assembly in the first direction;

a first detection component for detecting a first specific response parameter generated by the seat model assembly being impacted by the impact pendulum.

2. The backward impact calibration apparatus of claim 1 wherein the first specific response parameters include an acceleration of the seat model assembly, a head acceleration of the dummy, and a neck force of the dummy.

3. The backward impact calibration apparatus of claim 1, wherein the first detection component is further configured to detect a speed of the impact pendulum and an acceleration of the impact pendulum impacting the seat model assembly.

4. The rear impact calibration apparatus of claim 1 wherein the seat model assembly comprises a seat model and a first cushioning energy absorber disposed on a back side of the seat model, the impact pendulum being adapted to strike the first cushioning energy absorber.

5. The rear impact calibration apparatus of claim 4 wherein the seat model comprises a seat back assembly and a seat cushion assembly, the seat back assembly comprising a seat back and a back support, the seat back being connected to a back side of the back support to support the seat back, the first cushion absorber being disposed on the back support, the seat cushion assembly comprising a seat cushion and a cushion support, the cushion support being connected to the back side of the seat cushion to support the seat cushion, the seat back being connected to the seat cushion, at least one of the seat back and the seat cushion being angularly adjustable.

6. The rearward impact calibration apparatus of claim 5, wherein the seat back and the seat cushion are connected by a connecting assembly, the connecting assembly having a locked state and an unlocked state;

wherein, in the locking state, the connecting component is used for connecting and fixing the seat back and the seat cushion; in the unlocked state, at least one of the seat back and the seat cushion is rotatable to allow at least one of the seat back and the seat cushion to be angularly adjustable.

7. The rear impact calibration apparatus of claim 6 wherein the connection assembly comprises a connection block and a first locking member, the seat back being rotatably connected to the connection block and the seat back being fixedly connected to the connection block by the first locking member, the seat cushion being rotatably connected to the connection block and the seat cushion being fixedly connected to the connection block by the first locking member;

in the locking state, the first locking piece is connected and fixed with the seat back and the connecting block, and the seat cushion and the connecting block; in the unlocked state, the seat back and the seat cushion are rotatable relative to the connection block.

8. The rear impact calibration apparatus of claim 7 wherein the seat model assembly includes a seat base, the seat model being provided to the seat base, the connection block being slidably provided to the seat base in the first direction;

wherein, in the locking state, the connecting block is fixedly connected with the seat base through a second locking piece; in the unlocked state, the connection block is slidable relative to the seat base in the first direction.

9. The rear impact calibration apparatus according to claim 6, wherein a first connecting hole is formed in the seat back, the first connecting hole extends in a height direction of the seat back, a second connecting hole is formed in the back support, the seat back is movable relative to the back support to adjust a relative position of the second connecting hole and the first connecting hole, and a third locking member is adapted to penetrate the second connecting hole and the first connecting hole to fixedly connect the seat back to the back support.

10. A rear impact calibration apparatus according to claim 9 wherein the seat model assembly comprises a seat base, the seat model being provided to the seat base, the bottom surface of the back support being provided with a first slider, the back support being slidably provided to the seat base in the first direction by the first slider, the back support being adapted to be secured to the seat base by a fourth latch connection.

11. The rear impact calibration apparatus of claim 6 wherein the seat model assembly comprises a seat base, the seat model is provided on the seat base, the seat cushion support comprises a support frame and a second slider, an upper end of the support frame is rotatably connected to the seat cushion, a lower end of the support frame is rotatably connected to the second slider, the seat cushion support is slidably provided on the seat base along the first direction by the second slider, and the second slider is adapted to be fixedly connected to the seat base by a fifth lock.

12. The backward impact calibration apparatus of any one of claims 1-11, further comprising a second cushioning energy absorber disposed on a side of the bench that is remote from the impact pendulum of the seat model assembly.

13. A dummy calibration system for a vehicle crash test, the dummy calibration system comprising:

the head calibration device comprises a hanging frame, a rigid platform and a second detection component, wherein the head model is suitable for being hung on the hanging frame through a release structure, when the head model is released by the release structure, the head model freely falls to the rigid platform, and the second detection component is used for detecting a second specific response parameter generated by the head model freely falling to the rigid platform;

The neck calibration device comprises a device bracket, a swing arm, a third buffering energy absorber and a third detection component, wherein one end of the swing arm is in swing connection with the device bracket, the head and neck model is suitable for being arranged at the other end of the swing arm, the swing arm is suitable for moving from a set height to collide with the third buffering energy absorber, and the third detection component is used for detecting a third specific response parameter generated by the head and neck model when the swing arm moves from the set height to collide with the third buffering energy absorber;

the abdomen calibration device comprises a supporting table, a pressurizing assembly and a fourth detecting assembly, wherein an abdomen model is suitable for being installed on the supporting table, the pressurizing assembly is arranged above the abdomen model and used for applying downward pressure to the abdomen model, and the fourth detecting assembly is used for detecting the compression amount of the abdomen model;

a backward impact calibration device according to any one of claims 1-12.

14. A calibration method of a backward impact calibration device, characterized in that the backward impact calibration device is a backward impact calibration device according to any one of claims 1-12, the calibration method comprising:

Calibrating the condition that no dummy is placed on the seat model assembly;

determining that the calibration of the condition of not placing the dummy is qualified;

calibrating the condition of placing the dummy on the seat model assembly;

and judging whether the calibration of the dummy placement condition is qualified.

Images