Crash test dummy

Abstract

The application provides a crash dummy, and relates to the technical field of crash dummies, and can improve the reliability of crash test data. A chest segment spine structure of the crash dummy comprises at least two first rigid thoracic vertebra pieces and at least two flexible thoracic vertebra pieces, the first rigid thoracic vertebra pieces and the flexible thoracic vertebra pieces are alternately arranged along the extension direction of the chest segment spine structure and sequentially connected in a head-to-tail mode, a rib piece is fixedly connected with the first rigid thoracic vertebra piece, the rib piece is arranged in one-to-one correspondence with the first rigid thoracic vertebra piece, and the at least two rib pieces are all slidably connected with a sternum piece along the extension direction of the chest segment spine structure. The compression and expansion of the flexible thoracic vertebra piece enable the chest segment spine structure to produce bending, stretching and lateral bending movements, the crash dummy can produce forward bending, backward bending and lateral turning responses, the injury condition of the crash dummy in a crash is consistent with the injury condition of a real human body, and the reliability of crash test data can be improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of crash dummies, in particular to a crash dummy. BACKGROUND

[0002] The crash dummy is a test tool for automobile crash tests, has a structure similar to that of a real human body, is used for simulating a real human body, and is provided with sensors at key positions of the crash dummy. The sensors can collect parameters such as acceleration, force and displacement, and the data output by the sensors can be used to evaluate the injury condition of the crash dummy. The injury condition of the crash dummy can reflect the injury condition of a real human body. According to the injury condition of the crash dummy, the protection capability of a vehicle for passengers in a crash accident can be evaluated.

[0003] In the related art, the biological fidelity of the crash dummy is still insufficient. In the crash process, the motion characteristics of the crash dummy in the vehicle are quite different from those of a real human body, so that the injury condition of the crash dummy is quite different from that of a real human body, and the reliability of the crash test data is poor. SUMMARY

[0004] The application provides a crash dummy, which can improve the reliability of the crash test data.

[0005] The crash dummy provided by the application comprises a sternum piece, a thoracic spine structure and at least two rib pieces. The thoracic spine structure comprises at least two first rigid thoracic vertebra pieces and at least two flexible thoracic vertebra pieces. The first rigid thoracic vertebra pieces and the flexible thoracic vertebra pieces are alternately arranged along the extension direction of the thoracic spine structure and sequentially connected end to end. The rib pieces are fixedly connected with the first rigid thoracic vertebra pieces, and the rib pieces are arranged in one-to-one correspondence with the first rigid thoracic vertebra pieces. The at least two rib pieces are all in sliding connection with the sternum piece along the extension direction of the thoracic spine structure.

[0006] The crash dummy provided by the application has the first rigid thoracic vertebra pieces and the flexible thoracic vertebra pieces alternately arranged along the extension direction of the thoracic spine structure and sequentially connected end to end. The compression and expansion of the flexible thoracic vertebra pieces enable the thoracic spine structure to produce motions such as bending, stretching and lateral bending. The motion characteristics of the thoracic spine structure are more consistent with those of the thoracic spine of a real human body, and the biological simulation degree of the thoracic spine structure is higher. Compared with the rigid thoracic spine module in the related art, the thoracic spine structure provided by the application can produce a motion form more consistent with that of a real human body in the crash test. The crash dummy can produce responses such as forward bending, backward leaning and lateral turning. The injury condition of the crash dummy is more consistent with that of a real human body, and the reliability of the crash test data can be improved.

[0007] Moreover, by fixing the rib pieces to the first rigid thoracic vertebra piece, the rib pieces are more stable and convenient to install on the thoracic spine structure. It can be understood that the relative positions of the rib pieces change during the bending of the thoracic spine structure. By slidingly connecting the at least two rib pieces to the sternum piece along the extension direction of the thoracic spine structure, the rib pieces can independently slide relative to the sternum piece during the bending of the thoracic spine structure, which is less hindered than being locked to the sternum piece and unable to move. In the present application, the thoracic spine structure can bend more freely during the bending of the thoracic spine structure, which is more consistent with the deformation ability of the thoracic spine of a real human body, has higher bio-realism, and is beneficial to improve the reliability of the crash test data.

[0008] In some possible implementation manners of the present application, the sternum piece is formed with at least two first slits, the first slits extend along the extension direction of the thoracic spine structure, and the at least two first slits are respectively arranged corresponding to the at least two rib pieces. The first slits are provided with fasteners, and the fasteners are provided in the rib pieces.

[0009] By providing the fasteners in the first slits and the corresponding rib pieces, and extending the first slits along the extension direction of the thoracic spine structure, the rib pieces can drive the fasteners to slide relative to the sternum piece along the extension direction of the first slits during the bending of the thoracic spine structure, which is less hindered to the bending of the thoracic spine structure, and makes the deformation ability of the thoracic spine structure more consistent with that of the thoracic spine of a real human body. Moreover, the rib pieces and the sternum piece are fastened to each other by the fasteners, which makes the installation of the rib pieces and the sternum piece more stable and has sufficient connection stiffness, so that the compression amount and other parameters of the chest during the frontal crash or the chest pendulum calibration test are more consistent with the standard values, and the bio-realism of the crash dummy is higher.

[0010] In some possible implementation manners of the present application, the crash dummy further comprises a shoulder structure, a flexible chest structure, and a mounting piece, and the flexible chest structure is fixedly connected to the thoracic spine structure through the shoulder structure. The mounting piece, the sternum piece, and the rib pieces are sequentially arranged relative to each other along the front-rear direction of the crash dummy, and the mounting piece and the sternum piece jointly hold the flexible chest structure. The mounting piece is formed with at least two second slits, the at least two second slits are respectively arranged corresponding to the at least two rib pieces, the second slits are aligned with the corresponding first slits along the front-rear direction of the crash dummy, and the fasteners are provided in the second slits.

[0011] In this way, the fastener is not only used to connect the rib piece and the sternum piece, but also used to connect the mounting piece, so that the mounting piece and the sternum piece can jointly clamp the flexible chest structure, the installation of the flexible chest structure can be achieved, the fastener is fully utilized, other structures for fixing the mounting piece can be reduced, and the compactness of the structure is improved. The mounting piece is formed with a second slot, the second slot is aligned with the first slot, so that the fastener can slide in the second slot during the process that the rib piece drives the fastener to slide in the first slot, the mounting piece has a small hindering effect on the movement of the rib piece relative to the sternum piece, and then the thoracic spine structure can be relatively freely bent. Moreover, the flexible chest structure is clamped between the mounting piece and the sternum piece, and does not need to be in direct contact with the rib piece, so that the rib piece is not easy to cause abrasion to the flexible chest structure during the movement of the rib piece relative to the sternum piece, and the durability of the flexible chest structure is improved.

[0012] In some possible implementation manners of the present application, the first rigid thoracic vertebra piece is fixedly connected with the adjacent flexible thoracic vertebra piece.

[0013] In this way, the first rigid thoracic vertebra piece is connected with the adjacent flexible thoracic vertebra piece in a simple and convenient manner, the connection is stable, and the thoracic spine structure also has sufficient rigidity. The thoracic spine structure has sufficient rigidity, on the one hand, so that the thoracic spine structure can stably support the rib piece and the sternum piece, the dynamic response of the chest is more consistent with that of a real human body, in a frontal impact or a chest pendulum calibration test, impact energy can be jointly resisted by the rib piece, the sternum piece and the thoracic spine structure, and parameters such as the compression amount of the chest are more consistent with standard values, and on the other hand, the thoracic spine structure can be stably supported between an upper part component and a lower part component, for example, the upper part component is a cervical spine structure, and the lower part component is a lumbar spine structure, so that impact energy of the upper body can be relatively more transmitted to the lower body through the thoracic spine structure, the impact energy is not easy to be excessively dispersed to the rib piece and the sternum piece during the transmission process, and the energy transmission path is more consistent with that of a real human body, and the reliability of the collision test data is improved.

[0014] In some possible implementation manners of the present application, the number of the first rigid thoracic vertebra pieces is six, and the number of the flexible thoracic vertebra pieces is five. The thoracic spine structure further includes a second rigid thoracic vertebra piece, and one of the first rigid thoracic vertebra pieces at one end is connected with the second rigid thoracic vertebra piece in a head-to-tail manner.

[0015] By setting the number of the first rigid thoracic vertebrae to six and the number of the flexible thoracic vertebrae to five, on the one hand, a relatively high flexibility of relative movement between each of the first rigid thoracic vertebrae is achieved, so that the amount of forward leaning of the crash dummy during a crash is more consistent with that of a real human body, and on the other hand, the flexibility of the thoracic spine structure is not excessively large, so that the thoracic spine structure can stably support the rib member, the sternum member and the cervical spine structure and the like, and the transmission path of the crash energy and the dynamic response of the chest are more consistent with those of a real human body.

[0016] Moreover, the number of the first rigid thoracic vertebrae is six and the number of the flexible thoracic vertebrae is five, plus the second rigid thoracic vertebrae, on the one hand, the thoracic spine structure includes a total of twelve thoracic vertebrae, which is more consistent with a real human body, has a high biological fidelity and is beneficial to improving the reliability of the crash test data, and on the other hand, the first rigid thoracic vertebrae and the second rigid thoracic vertebrae are respectively located at two ends of the thoracic spine structure along the extension direction, the two ends of the thoracic spine structure along the extension direction are respectively used for connecting with the cervical spine structure and the lumbar spine structure, the materials of the two end portions of the thoracic spine structure along the extension direction are both rigid materials, which is beneficial to improving the stability of the connection between the thoracic spine structure and the cervical spine structure and the stability of the connection between the thoracic spine structure and the lumbar spine structure.

[0017] In some possible implementation manners of the present application, at least two tensioning ropes are further included, the tensioning ropes are arranged in the at least two first rigid thoracic vertebrae and the at least two flexible thoracic vertebrae, among the at least two first rigid thoracic vertebrae and the at least two flexible thoracic vertebrae, two of those located at two ends are respectively fixedly connected with two ends of the tensioning ropes, and along the front-rear direction of the crash dummy, the two tensioning ropes are respectively located at two ends of the thoracic spine structure.

[0018] In this way, the tensioning ropes are arranged in the at least two first rigid thoracic vertebrae and the at least two flexible thoracic vertebrae, on the one hand, the stability of the connection between each of the first rigid thoracic vertebrae and each of the flexible thoracic vertebrae is improved, and on the other hand, the tensioning ropes have a deformation ability, and in the case that the flexible thoracic vertebrae are deformed, the tensioning ropes can be bent, so that each of the first rigid thoracic vertebrae still has a relatively high flexibility of relative movement, which is more consistent with that of a real human body.

[0019] Further, by arranging the two tensioning ropes to be located at two ends of the thoracic spine structure along the front-rear direction of the crash dummy, the thoracic spine structure needs to overcome the tension of the two tensioning ropes respectively during the process of bending forward and backward. It can be understood that the length of the front end and the length of the rear end of the thoracic spine structure change during the process of bending forward and backward along the front-rear direction. For example, when the thoracic spine structure bends forward, the length of the front end of the thoracic spine structure decreases and the length of the rear end of the thoracic spine structure increases. In this case, the tension of the tensioning rope located at the rear end can limit the elongation of the rear end of the thoracic spine structure, thereby limiting the forward bending of the thoracic spine structure. In this way, the tensioning ropes can limit the bending amplitude of the thoracic spine structure from being too large. The bending of the thoracic spine structure is mainly realized by the deformation of each flexible thoracic vertebra. The bending amplitude of the thoracic spine structure is not too large, which is conducive to reducing the risk of repeated large deformation of the flexible thoracic vertebra and failure, and is also conducive to reducing the risk of loosening of the flexible thoracic vertebra and the first rigid thoracic vertebra.

[0020] It can be understood that in the present application, the tensioning ropes can limit the deformation of the thoracic spine structure, that is, can improve the stiffness of the thoracic spine structure. Personnel can flexibly adjust the tension of the tensioning ropes according to the demand for the stiffness of the thoracic spine structure. In the case of a decrease in the stiffness of the thoracic spine structure after a period of use, personnel can also improve the stiffness of the thoracic spine structure by increasing the tension of the tensioning ropes, so that the stiffness of the thoracic spine structure is adjusted more conveniently.

[0021] In some possible implementation manners of the present application, the edge of the flexible thoracic vertebra near the front end of the crash dummy has a first cutout, and the edge of the flexible thoracic vertebra near the rear end of the crash dummy has a second cutout. The first cutout and the second cutout both penetrate the flexible thoracic vertebra along the transverse direction of the crash dummy. The depth direction of the first cutout and the depth direction of the second cutout are both parallel to the front-rear direction of the crash dummy. The depth of the first cutout is less than the depth of the second cutout.

[0022] By arranging the edge of the flexible thoracic vertebra near the front end of the crash dummy to have a first cutout, the first cutout can be opened during the process of bending the thoracic spine structure backward, so that the maximum amplitude of the backward bending of the thoracic spine structure is larger, which is more consistent with the thoracic spine of a real human body. By arranging the edge of the flexible thoracic vertebra near the rear end of the crash dummy to have a second cutout, the second cutout can be opened during the process of bending the thoracic spine structure forward, so that the maximum amplitude of the forward bending of the thoracic spine structure is larger, which is more consistent with the thoracic spine of a real human body. It can be understood that the greater the depth of the cutout, the greater the bending amplitude of the thoracic spine structure. By arranging the depth of the first cutout to be less than the depth of the second cutout, the maximum amplitude of the forward bending of the thoracic spine structure is greater than the maximum amplitude of the backward bending, which is more consistent with the bending ability of the thoracic spine of a real human body, has higher biological fidelity, and is conducive to improving the reliability of the crash test data.

[0023] In some possible implementation manners of the present application, the edge of each flexible thoracic vertebra member close to the front end of the crash dummy has a first cutout, the first cutout penetrates the flexible thoracic vertebra member in the transverse direction of the crash dummy, the depth direction of the first cutout is parallel to the front-rear direction of the crash dummy, and the depth of the first cutout of each flexible thoracic vertebra member gradually increases in the top-down direction.

[0024] By gradually increasing the depth of the first cutout of each flexible thoracic vertebra member in the top-down direction, the maximum relative movement amplitude of two adjacent flexible thoracic vertebra members gradually increases in the top-down direction, and then the maximum bending amplitude of the upper end of the thoracic spine structure is relatively small, and the maximum bending amplitude of the lower end is relatively large, which is more consistent with the bending ability of the thoracic spine of a real human body, so that the biofidelity of the thoracic spine structure is relatively high, and the reliability of the crash test data is improved.

[0025] In some possible implementation manners of the present application, the edge of each flexible thoracic vertebra member close to the rear end of the crash dummy has a second cutout, the second cutout penetrates the flexible thoracic vertebra member in the transverse direction of the crash dummy, the depth direction of the second cutout is parallel to the front-rear direction of the crash dummy, and the depth of the second cutout of each flexible thoracic vertebra member gradually increases in the top-down direction.

[0026] By gradually increasing the depth of the second cutout of each flexible thoracic vertebra member in the top-down direction, the maximum relative movement amplitude of two adjacent flexible thoracic vertebra members gradually increases in the top-down direction, and then the maximum bending amplitude of the upper end of the thoracic spine structure is relatively small, and the maximum bending amplitude of the lower end is relatively large, which is more consistent with the bending ability of the thoracic spine of a real human body, so that the biofidelity of the thoracic spine structure is relatively high, and the reliability of the crash test data is improved.

[0027] In some possible implementation manners of the present application, the surface of at least one side of the first rigid thoracic vertebra member is formed with a mounting groove in the extension direction of the thoracic spine structure, and the flexible thoracic vertebra member is embedded in the mounting groove.

[0028] By embedding the flexible thoracic vertebra member in the mounting groove, the mounting of the flexible thoracic vertebra member and the thoracic spine structure is relatively stable, and the reliability of the thoracic spine structure is improved.

[0029] In some possible implementation manners of the present application, the number of rib members is the same as the number of first rigid thoracic vertebra members.

[0030] The number of rib members is the same as the number of first rigid thoracic vertebra members, on the one hand, the number of first rigid thoracic vertebra members can meet the requirement of mounting at least two rib members, and on the other hand, the number of first rigid thoracic vertebra members is not redundant, which is beneficial to reduce the cost and improve the compactness of the structure.

[0031] Moreover, in the case that the number of the first rigid thoracic vertebra pieces is six and the number of the flexible thoracic vertebra pieces is five, the number of the rib pieces is also six, which is consistent with the number of ribs of a Hybrid III standard dummy, so that the thoracic spine structure provided by the present application can be well adapted to the Hybrid III standard dummy, and the Hybrid III standard dummy does not need to be greatly adjusted to apply the thoracic spine structure provided by the present application. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0033] Figure 1 is a structural schematic diagram of a first perspective view of a crash dummy in some embodiments of the present application;

[0034] Figure 2 is a structural schematic diagram of a second perspective view of a crash dummy in some embodiments of the present application;

[0035] Figure 3 is a structural schematic diagram of a thoracic spine structure in some embodiments of the present application;

[0036] Figure 4 is a partial enlarged view of A in Figure 1

[0037] Figure 5 is a structural schematic diagram of a connection between a mounting piece and a flexible thoracic structure in some embodiments of the present application;

[0038] Figure 6 is a thoracic pendulum test curve diagram in some embodiments of the present application;

[0039] Figure 7 is an exploded view of a thoracic spine structure in some embodiments of the present application;

[0040] Figure 8 is a sectional view of a thoracic spine structure in some embodiments of the present application.

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] ​1, thoracic spine structure; 11, first rigid thoracic vertebra piece; 111, mounting groove; 112, perforation; 12, flexible thoracic vertebra piece; 121, first cutout; 122, second cutout; 123, first round corner; 124, second round corner; 13, second rigid thoracic vertebra piece; 131, connecting block; 132, mounting block; 1321, mounting cavity; 14, tensioning rope; 141, limiting portion; 15, nut; 16, mounting frame; 161, first support plate; 1611, wedge-shaped block; 162, second support plate; 2, rib piece; 3, sternum piece; 31, first bar-shaped hole; 4, mounting piece; 41, second bar-shaped hole; 5, lumbar spine structure; 6, cervical spine structure; 7, chest displacement sensor; 8, flexible chest structure; 9, shoulder structure. DETAILED DESCRIPTION

[0043] The technical solutions in the present application will be described clearly and exhaustively below in combination with the drawings.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0045] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. Those skilled in the art will recognize that the embodiments described herein can be combined with one another.

[0046] Hereinafter, the terms "first", "second" are only for the purpose of description, and cannot be understood as implying or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0047] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0048] In the related art, the bio-realism of the crash dummy is still insufficient. In the collision process, the motion characteristics of the crash dummy in the vehicle are quite different from those of the real human body, resulting in a large difference between the injury of the crash dummy and that of the real human body, and the reliability of the crash test data is poor.

[0049] The reasons for the poor reliability of the crash test data in the related art are analyzed as follows:

[0050] In the related art, the crash dummy is mostly a static model established from the biomedical perspective, which is difficult to reflect the joint motion characteristics of the human body in the collision process, especially for the thoracic spine. The thoracic spine of the real human body includes multiple thoracic vertebrae, and each thoracic vertebra has relatively high flexibility. However, the crash dummy in the related art adopts an integrated steel square column as a thoracic spine module, which is difficult to simulate the motion of the thoracic spine of the real human body in a collision accident. The thoracic motion of the crash dummy is greatly distorted, and the distortion of the thoracic motion also causes the motion of the neck and limbs to be distorted. The bio-realism is poor, and the motion response of the human body in the collision process cannot be truly reflected, resulting in poor reliability of the test data of the dummy in the test.

[0051] For example, for a vehicle equipped with an autonomous emergency braking (AEB) device, if an emergency occurs in front of the vehicle during vehicle motion, the AEB device can automatically brake after recognizing the danger. In this case, the occupant leaves his initial seating position due to inertia, resulting in a certain amount of forward inclination, which is referred to as "displacement". The current regulations do not consider the displacement of the occupant before the collision. If the occupant is displaced and then involved in a collision accident, he or she may suffer more serious injuries in actual traffic accidents.

[0052] Statistical data of the forward inclination of the volunteer participating in the automatic braking are compared with the forward inclination of the crash dummy in the related art, and it is found that there is a large difference between the forward inclination of the crash dummy in the related art and that of the real human body, i.e., the crash dummy in the related art cannot truly reflect the forward inclination of the real human body under the condition of vehicle braking. Therefore, the crash dummy in the related art cannot reproduce the actual injury of the real human body under the condition of forward inclination before braking.

[0053] The applicant of the present application found that the reason why the crash dummy in the related art cannot truly reflect the forward inclination of the real human body under the condition of vehicle braking is that the crash dummy in the related art adopts an integrated steel square column as a thoracic spine module, which is difficult to simulate the motion of the thoracic spine of the real human body in a collision accident, and the thoracic motion of the crash dummy is greatly distorted.

[0054] Please refer to Figure 1 , Figure 2 andFigure 3 The embodiment of the present application provides a crash dummy, Figure 1 is a first perspective structure of the crash dummy in some embodiments of the present application, Figure 2 is a second perspective structure diagram of the crash dummy in some embodiments of the present application, Figure 3 is a structure diagram of a thoracic spine structure in some embodiments of the present application, and the crash dummy comprises a sternum piece 3, the thoracic spine structure 1 and at least two rib pieces 2. Wherein, the thoracic spine structure 1 comprises at least two first rigid thoracic vertebra pieces 11 and at least two flexible thoracic vertebra pieces 12, along the extension direction z of the thoracic spine structure 1, the first rigid thoracic vertebra pieces 11 and the flexible thoracic vertebra pieces 12 are arranged alternately, and are sequentially connected in a head-to-tail manner, the rib piece 2 is fixedly connected with the first rigid thoracic vertebra piece 11, the rib piece 2 is arranged in one-to-one correspondence with the first rigid thoracic vertebra piece 11, and along the extension direction z of the thoracic spine structure 1, the at least two rib pieces 2 are all in sliding connection with the sternum piece 3.

[0055] Please refer to Figure 1 , Figure 2 and Figure 3 , the thoracic spine structure 1 provided by the embodiment of the present application, along the extension direction z of the thoracic spine structure 1, the first rigid thoracic vertebra pieces 11 and the flexible thoracic vertebra pieces 12 are arranged alternately, and are sequentially connected in a head-to-tail manner, the compression and expansion of the flexible thoracic vertebra piece 12 enable the thoracic spine structure 1 to generate bending, stretching and lateral bending and other movements, so that the movement characteristics of the thoracic spine structure 1 are more consistent with the movement characteristics of the thoracic spine of a real human body, and the biological simulation degree of the thoracic spine structure 1 is higher. Compared with the rigid thoracic spine module in the related art, the thoracic spine structure 1 provided by the embodiment of the present application can generate a movement form more consistent with a real human body in a crash test, the crash dummy can generate responses such as forward bending, backward bending and lateral turning, the injury condition of the crash dummy is more consistent with that of a real human body, and the reliability of the crash test data can be improved.

[0056] Moreover, by fixing the rib piece 2 with the first rigid thoracic vertebra piece, the installation of the rib piece 2 on the thoracic spine structure 1 is more stable and convenient. It can be understood that the relative positions of the rib pieces 2 change in the process of bending the thoracic spine structure 1 forward and backward. By making the at least two rib pieces 2 all in sliding connection with the sternum piece 3 along the extension direction z of the thoracic spine structure 1, the rib piece 2 can independently slide relative to the sternum piece 3 in the process of bending the thoracic spine structure 1 forward and backward, and compared with the rib piece 2 being locked with the sternum piece 3 and being unable to move, the rib piece 2 and the sternum piece 3 have smaller hindering effect on the bending of the thoracic spine structure 1 forward and backward in the present application, and the thoracic spine structure 1 can bend more freely, which is more consistent with the deformation ability of the thoracic spine of a real human body, has higher biological simulation degree, and is beneficial to improving the reliability of the crash test data.

[0057] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, the first rigid thoracic vertebral member 11 can be made of aluminum alloy or steel, etc. This results in high stiffness and strength for the first rigid thoracic vertebral member 11, while maintaining low cost. In some embodiments of this application, the flexible thoracic vertebral member 12 can be made of rubber, such as polyurethane rubber, natural rubber, butadiene rubber, isoprene rubber, or styrene-butadiene rubber, etc. In some embodiments of this application, both the first rigid thoracic vertebral member 11 and the flexible thoracic vertebral member 12 can be solid structures.

[0058] Please refer to Figure 1 , Figure 2 and Figure 3 In this embodiment, the shapes of the first rigid thoracic vertebra 11 and the flexible thoracic vertebra 12 can be implemented in various ways. For example, they can be columnar structures with a circular or rectangular cross-section, and the height direction of the columnar structure can be the same as the extension direction z of the thoracic spine structure 1. In some embodiments of this application, the first rigid thoracic vertebra 11 and the flexible thoracic vertebra 12 can be rectangular columnar structures, with one side of the rectangle extending along the anterior-posterior direction y of the collision dummy, and the adjacent other side extending along the lateral direction x of the collision dummy. In some embodiments of this application, the length of the first rigid thoracic vertebra 11 along the anterior-posterior direction y of the collision dummy can be 80 to 100 mm, for example, 85 mm, 90 mm, or 95 mm, and the length of the first rigid thoracic vertebra 11 along the lateral direction x of the collision dummy can be 50 to 80 mm, for example, 50 mm, 65 mm, or 70 mm.

[0059] Please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments of this application, the length of the first rigid thoracic vertebra 11 along the extension direction z of the thoracic spinal structure 1 can be 15 to 25 mm, for example, 18 mm, 20 mm, or 23 mm. In some embodiments of this application, the length of the flexible thoracic vertebra 12 along the extension direction z of the thoracic spinal structure 1 can be 15 to 25 mm, for example, 18 mm, 20 mm, or 23 mm.

[0060] Please refer to Figure 4 , Figure 1 and Figure 5 , Figure 4 yes Figure 6 A magnified view of a portion of point A in the middle. Figure 1 This is a schematic diagram of the connection between the mounting component and the flexible chest structure in some embodiments of this application. Figure 4The rib pieces 2 are hidden, and the sternum piece 3 is shown. In some embodiments of the present application, the sternum piece 3 is formed with at least two first strip-shaped holes 31 extending along the extension direction z of the thoracic spinal structure 1, and the at least two first strip-shaped holes 31 are respectively arranged corresponding to the at least two rib pieces 2, and the first strip-shaped holes 31 are provided with fasteners which are provided in the rib pieces 2.

[0061] By providing the fasteners in the first strip-shaped holes 31 and the corresponding rib pieces 2, the first strip-shaped holes 31 extend along the extension direction z of the thoracic spinal structure 1, so that in the process of bending the thoracic spinal structure 1 forward and backward, the rib pieces 2 can drive the fasteners to slide along the extension direction of the first strip-shaped holes 31 relative to the sternum piece 3, and the rib pieces 2 have a smaller hindering effect on the bending of the thoracic spinal structure 1, so that the deformation ability of the thoracic spinal structure 1 is more consistent with the thoracic spine of a real human body. Moreover, the rib pieces 2 and the sternum piece 3 are fastened to each other by the fasteners, so that the installation of the rib pieces 2 and the sternum piece 3 is more stable, has sufficient connection stiffness, so that in the frontal impact or thoracic pendulum calibration test, the compression amount and other parameters of the thorax are more consistent with the standard values, so that the bio-realism of the crash dummy is higher. When a 23.36 kg pendulum hits the dummy chest at a speed of 2.6 m / s, the curve of the thoracic chest compression (ThCC) changing with time t is shown in FIG. 1. Figure 5 .

[0062] In the embodiments of the present application, the first strip-shaped holes 31 can be through holes or blind holes.

[0063] Please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments of the present application, the rib pieces 2 are formed with circular through holes which are arranged corresponding to the first strip-shaped holes 31 one by one, and the fasteners are provided in the circular through holes and the first strip-shaped holes 31 to fasten and connect the rib pieces 2 and the sternum piece 3. In this way, it is beneficial to make the connection of the rib pieces 2 and the sternum piece 3 more stable.

[0064] Please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments of the present application, the two ends of each rib piece 2 are provided with first strip-shaped holes 31 and fasteners, and the two end fasteners are respectively provided between the two ends of the rib piece 2 and the corresponding first strip-shaped holes 31. In this way, the two ends of each rib piece 2 are fastened and connected to the sternum piece 3, and the connection of the rib pieces 2 and the sternum piece 3 is more stable.

[0065] Please refer to Figure 1 , Figure 4 and Figure 5In some embodiments of the present application, the crash test dummy further comprises a shoulder structure 9, a flexible chest structure 8 fixedly connected with the thoracic spine structure 1 through the shoulder structure 9, and a mounting member 4, the mounting member 4, the sternum member 3 and the rib member 2 are sequentially arranged opposite to each other along the front-rear direction y of the crash test dummy, the mounting member 4 and the sternum member 3 jointly hold the flexible chest structure 8, and the mounting member 4 can be located at the front side of the sternum member 3 or the sternum member 3 can be located at the front side of the mounting member 4. The mounting member 4 is formed with at least two second strip-shaped holes 41 corresponding to the at least two rib members 2, respectively, and the second strip-shaped holes 41 are aligned with the corresponding first strip-shaped holes 31 along the front-rear direction y of the crash test dummy, and the fasteners are arranged in the second strip-shaped holes 41.

[0066] In this way, the fasteners are used not only to connect the rib members 2 and the sternum member 3 but also to connect the mounting member 4, so that the mounting member 4 and the sternum member 3 can jointly hold the flexible chest structure 8 and the mounting of the flexible chest structure 8 can be achieved, the fasteners are fully utilized, other structures for fixing the mounting member 4 can be reduced, and the compactness of the structure can be improved. The mounting member 4 is formed with the second strip-shaped holes 41, the second strip-shaped holes 41 are aligned with the first strip-shaped holes 31, so that when the rib members 2 drive the fasteners to slide in the first strip-shaped holes 31, the fasteners can also slide in the second strip-shaped holes 41, the mounting member 4 has a smaller hindering effect on the movement of the rib members 2 relative to the sternum member 3, and thus the thoracic spine structure 1 can be relatively freely bent. Moreover, the flexible chest structure 8 is held between the mounting member 4 and the sternum member 3 and does not need to be in direct contact with the rib members 2, so that the rib members 2 are less likely to cause abrasion to the flexible chest structure 8 during the movement relative to the sternum member 3, and the durability of the flexible chest structure 8 can be improved.

[0067] In the embodiments of the present application, the second strip-shaped holes 41 can be through holes or blind holes.

[0068] In the embodiments of the present application, the flexible chest structure 8 covers the chest of the crash test dummy.

[0069] Please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments of the present application, the sternum member 3 and the mounting member 4 are both plate-shaped structures, and the sternum member 3 and the mounting member 4 are arranged opposite to each other along the front-rear direction y of the crash test dummy. In this way, the sternum member 3 and the mounting member 4 can stably hold the flexible chest structure 8.

[0070] Please refer to Figure 1 , Figure 4 and Figure 5In some embodiments of the present application, the length of the first strip-shaped hole 31 can be 7-13 mm, for example, 8 mm, 10 mm or 12 mm, etc. In some embodiments of the present application, the length of the second strip-shaped hole 41 can be 7-13 mm, for example, 8 mm, 10 mm or 12 mm, etc.

[0071] Please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments of the present application, in the initial state of the thoracic spine structure 1, i.e. in the unbent state, the fastener can be located at the middle of the first strip-shaped hole 31 in the direction of its own extension, and can be located at the middle of the second strip-shaped hole 41 in the direction of its own extension.

[0072] Please refer to Figure 1 , Figure 7 and Figure 8 , Figure 7 is an exploded view of the thoracic spine structure in some embodiments of the present application, Figure 8 is a cross-sectional view of the thoracic spine structure in some embodiments of the present application. In some embodiments of the present application, the first rigid thoracic vertebra member 11 is fixedly connected with the adjacent flexible thoracic vertebra member 12. In this way, the connection form of the first rigid thoracic vertebra member 11 with the adjacent flexible thoracic vertebra member 12 is relatively simple, the connection is relatively stable, and the thoracic spine structure 1 also has sufficient rigidity. The thoracic spine structure 1 has sufficient rigidity, on the one hand, so that the thoracic spine structure 1 can stably support the rib member 2 and the sternum member 3, so that the dynamic response of the chest is more consistent with that of a real human body, in a frontal impact or chest pendulum calibration test, the impact energy can be jointly resisted by the rib member 2, the sternum member 3 and the thoracic spine structure 1, and the compression amount and other parameters of the chest are more consistent with the standard values, on the other hand, the thoracic spine structure 1 can be stably supported between the upper part and the lower part, for example, the neck spine structure 6 and the waist spine structure 5, so that the impact energy of the upper body can be relatively more transmitted to the lower body through the thoracic spine structure 1, and the impact energy is not easily dispersed to the rib member 2 and the sternum member 3 during the transmission process, which is more consistent with the energy transmission path of a real human body, and is beneficial to improve the reliability of the collision test data.

[0073] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the first rigid thoracic vertebra member 11 can be fixedly connected with the adjacent flexible thoracic vertebra member 12 in various forms, for example, fastening connection, adhesion or two-shot molding, etc.

[0074] Please refer to Figure 1 , Figure 7 and Figure 8In some embodiments of the present application, the number of first rigid thoracic vertebra members 11 is six, and the number of flexible thoracic vertebra members 12 is five. The thoracic spine structure 1 further comprises a second rigid thoracic vertebra member 13, which is connected end to end with one of the at least two first rigid thoracic vertebra members 11 at one end.

[0075] By having the number of first rigid thoracic vertebra members 11 be six and the number of flexible thoracic vertebra members 12 be five, on the one hand, the relative movement flexibility between each of the first rigid thoracic vertebra members 11 is high, so that the amount of forward leaning of the crash dummy during a crash is more consistent with that of a real human body. On the other hand, the flexibility of the thoracic spine structure 1 is not too large, so that the thoracic spine structure 1 can stably support the rib members 2, the sternum member 3, the neck spine structure 6, and other components, so that the transmission path of the crash energy and the dynamic response of the chest are more consistent with those of a real human body.

[0076] Furthermore, by having the number of first rigid thoracic vertebra members 11 be six and the number of flexible thoracic vertebra members 12 be five, and adding the second rigid thoracic vertebra member 13, on the one hand, the thoracic spine structure 1 comprises a total of twelve thoracic vertebra members, which is more consistent with a real human body and has a high degree of biological fidelity, which is conducive to improving the reliability of the crash test data. On the other hand, the first rigid thoracic vertebra member 11 and the second rigid thoracic vertebra member 13 are respectively located at the two ends of the thoracic spine structure 1 along the extension direction, and the two ends of the thoracic spine structure 1 along the extension direction are respectively used for connecting with the neck spine structure 6 and the lumbar spine structure 5, so that the materials of the two end portions of the thoracic spine structure 1 along the extension direction are rigid materials, which is conducive to improving the stability of the connection between the thoracic spine structure 1 and the neck spine structure 6, and is also conducive to improving the stability of the connection between the thoracic spine structure 1 and the lumbar spine structure 5.

[0077] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the material of the second rigid thoracic vertebra member 13 can be aluminum alloy or steel. In this way, the second rigid thoracic vertebra member 13 has high rigidity, light weight, and low cost.

[0078] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the second rigid thoracic vertebra member 13 can be fastened and connected with the first rigid thoracic vertebra member 11, for example, by screw connection or bolt connection, and the axial direction of the screw or bolt can be the extension direction z of the thoracic spine structure 1.

[0079] Please refer to Figure 1 , Figure 7 and Figure 8In the embodiment of the present application, the thoracic spinal structure 1 has two ends along the extending direction, which are used for connecting with the cervical spinal structure 6 and the lumbar spinal structure 5 respectively. The first rigid thoracic vertebra piece 11 at one end of the thoracic spinal structure 1 can be fixedly connected with the lumbar spinal structure 5, and the second rigid thoracic vertebra piece 13 can be fixedly connected with the cervical spinal structure 6. Alternatively, the first rigid thoracic vertebra piece 11 at one end of the thoracic spinal structure 1 can be fixedly connected with the cervical spinal structure 6, and the second rigid thoracic vertebra piece 13 can be fixedly connected with the lumbar spinal structure 5.

[0080] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the second rigid thoracic vertebra piece 13 is fixedly connected with the cervical spinal structure 6, and the shoulder structure 9 can also be fixedly connected with the second rigid thoracic vertebra piece 13. In this way, the second rigid thoracic vertebra piece 13 is fully utilized, which is conducive to improving the compactness of the structure.

[0081] Please refer to Figure 1 , Figure 7 and Figure 8 and Table 1, in the case that the acceleration of the vehicle in the deceleration stage is 1 m / s 2 , the front curvature angle of the thoracic spinal structure 1 of the crash dummy provided by the embodiment of the present application is consistent with the front curvature angle of the thoracic spinal structure of a real human body.

[0082] Table 1

[0083]

[0084] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the second rigid thoracic vertebra piece 13 includes a connecting block 131 and a mounting block 132. The connecting block 131 is a solid structure, and the connecting block 131 is connected with the first rigid thoracic vertebra piece 11 end to end, which can be a fastening connection. The connecting block 131 can be embedded in the mounting groove 111. The mounting block 132 is formed with a mounting cavity 1321 having a mounting opening. The mounting opening is directed to the first rigid thoracic vertebra piece 11 from the connecting block 131. The connecting block 131 extends into the mounting cavity 1321 through the mounting opening. The volume of the connecting block 131 is smaller than the volume of the mounting cavity 1321. The side wall of the mounting cavity 1321 is fastened with the connecting block 131. In this way, by making the volume of the connecting block 131 smaller than the volume of the mounting cavity 1321 of the mounting block 132, the center of gravity of the second rigid thoracic vertebra piece 13 can be adjusted by adjusting the volume of the connecting block 131, and then the center of gravity of the thoracic spinal structure 1 is adjusted. In some embodiments of the present application, the cervical spinal structure 6 can be fixedly connected with the mounting block 132, and the shoulder structure 9 can also be fixedly connected with the mounting block 132.

[0085] Please refer toFigure 1 、 Figure 7 and Figure 8 Of course, in some embodiments of the present application, the number of first rigid thoracic vertebra pieces 11 and the number of flexible thoracic vertebra pieces 12 can also be other forms, for example, the number of first rigid thoracic vertebra pieces 11 and the number of flexible thoracic vertebra pieces 12 can both be six.

[0086] Please refer to Figure 1 、 Figure 7 and Figure 8 In some embodiments of the present application, the crash dummy further comprises a mounting bracket 16, the first rigid thoracic vertebra piece 11 at one end of the thoracic spine structure 1 is fixedly connected with the lumbar spine structure 5 through the mounting bracket 16. The mounting bracket 16 comprises a first support plate 161, the first support plate 161 is arranged parallel to the end face of the upper end of the lumbar spine structure 5, and the first support plate 161 is located between the lower end face of the thoracic spine structure 1 and the end face of the upper end of the lumbar spine structure 5. Generally, there is an included angle between the lower end face of the thoracic spine structure 1 and the end face of the upper end of the lumbar spine structure 5, the upper end face of the first support plate 161 is upwardly protruding, and a wedge-shaped block 1611 is formed, the upper end surface of the wedge-shaped block 1611 is parallel to the lower end face of the thoracic spine structure 1, and the upper end surface of the wedge-shaped block 1611 abuts against the lower end face of the thoracic spine structure 1. In this way, the connection between the mounting bracket 16 and the thoracic spine structure 1 is more stable.

[0087] Please refer to Figure 1 、 Figure 7 and Figure 8 In some embodiments of the present application, the front end edge of the first support plate 161 is downwardly bent to form a second support plate 162, and the crash dummy further comprises a chest displacement sensor 7, which can be a rotary potentiometer, one end of the chest displacement sensor 7 is fixedly connected with the second support plate 162, and the other end is connected with the sternum piece 3, and the chest displacement sensor 7 is used to detect the compression amount of the chest during the collision. In this way, the second support plate 162 provides a reliable mounting position for the chest displacement sensor 7, so that the installation of the chest displacement sensor 7 is more stable.

[0088] Please refer to Figure 1 、 Figure 7 and Figure 8 In some embodiments of the present application, at least two tensioning ropes 14 are further included, the tensioning ropes 14 are arranged through at least two first rigid thoracic vertebra pieces 11 and at least two flexible thoracic vertebra pieces 12, among the at least two first rigid thoracic vertebra pieces 11 and the at least two flexible thoracic vertebra pieces 12, the two ends of the two are respectively fixedly connected with the two ends of the tensioning ropes 14, and along the front-rear direction y of the crash dummy, the two tensioning ropes 14 are respectively located at the two ends of the thoracic spine structure 1.

[0089] In this way, the tensioning rope 14 is arranged through the at least two first rigid thoracic vertebra members 11 and the at least two flexible thoracic vertebra members 12, on one hand, the stability of the connection between each first rigid thoracic vertebra member 11 and each flexible thoracic vertebra member 12 is improved, on the other hand, the tensioning rope 14 has the deformation ability, when the flexible thoracic vertebra member 12 deforms, the tensioning rope 14 can bend, so that the relative movement flexibility between each first rigid thoracic vertebra member 11 is still high, which is more consistent with the actual human body.

[0090] Further, by arranging the two tensioning ropes 14 at the two ends of the thoracic spine structure 1 along the front-back direction y of the crash dummy, the tensioning force of the two tensioning ropes 14 needs to be overcome during the bending of the thoracic spine structure 1 in the front-back direction y. It can be understood that the length of the front end and the length of the rear end of the thoracic spine structure 1 change during the bending of the thoracic spine structure 1 in the front-back direction y, for example, when the thoracic spine structure 1 bends forward, the length of the front end of the thoracic spine structure 1 decreases and the length of the rear end increases, in this case, the tensioning force of the tensioning rope 14 located at the rear end can limit the elongation of the rear end of the thoracic spine structure 1, thereby limiting the forward bending of the thoracic spine structure 1. In this way, the bending range of the thoracic spine structure 1 is not too large, the bending of the thoracic spine structure 1 is mainly realized by the deformation of each flexible thoracic vertebra member 12, and the bending range of the thoracic spine structure 1 is not too large, which is beneficial to reduce the risk of repeated large deformation of the flexible thoracic vertebra member 12 and failure, and is also beneficial to reduce the risk of loosening of the flexible thoracic vertebra member 12 and the first rigid thoracic vertebra member 11.

[0091] Please refer to Figure 1 , Figure 7 and Figure 8 It can be understood that in the embodiment of the present application, the tensioning rope 14 can limit the deformation ability of the thoracic spine structure 1, that is, the stiffness of the thoracic spine structure 1 can be improved, and the tensioning force of the tensioning rope 14 can be adjusted flexibly according to the demand for the stiffness of the thoracic spine structure 1. In the case that the stiffness of the thoracic spine structure 1 decreases after a period of use, the stiffness of the thoracic spine structure 1 can be improved by increasing the tensioning force of the tensioning rope 14, so that the stiffness of the thoracic spine structure 1 is adjusted conveniently.

[0092] Please refer to Figure 1 , Figure 7 and Figure 8 It should be explained that in the embodiment of the present application, the tensioning rope 14 is arranged through the at least two first rigid thoracic vertebra members 11 and the at least two flexible thoracic vertebra members 12 along the extension direction z of the thoracic spine structure 1.

[0093] Please refer to Figure 1 , Figure 7 and Figure 8In the embodiments of the present application, the first rigid thoracic vertebra member 11 is used to pass the hole of the tensioning rope 14. Referring to the hole 112 in the drawing.

[0094] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the distance between the front tensioning rope 14 and the front end edge of the thoracic spine structure 1 is equal to the distance between the rear tensioning rope 14 and the rear end edge of the thoracic spine structure 1. In this way, the stress on the front end and the rear end of the thoracic spine structure 1 is more consistent, which is beneficial to improve the stress condition of the thoracic spine structure 1.

[0095] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the tensioning rope 14 can be a steel wire rope, and the diameter of the steel wire rope can be 10 mm. In this way, the rigidity and strength of the tensioning rope 14 are higher, which is beneficial to make the thoracic spine structure 1 have sufficient rigidity, and also beneficial to make the reliability of the thoracic spine structure 1 higher.

[0096] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, one end of the tensioning rope 14 protrudes radially outward to form a limiting portion 141, and the other end of the tensioning rope 14 is threadedly connected. At least two first rigid thoracic vertebra members 11 and at least two flexible thoracic vertebra members 12 are clamped between the limiting portion 141 and the nut 15 along the extension direction of the tensioning rope 14, i.e. along the extension direction z of the thoracic spine structure 1. In some embodiments of the present application, the tensioning rope 14 is also sleeved with a gasket, and the nut 15 clamps at least two first rigid thoracic vertebra members 11 and at least two flexible thoracic vertebra members 12 together with the limiting portion 141. In this way, the installation of the tensioning rope 14 is more stable and convenient, and by screwing the nut 15, the tensioning force of the tensioning rope 14 can be adjusted, which is more convenient.

[0097] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, a gap of 3-8 mm can be provided between the gasket and the nut 15, and the width of the gap is, for example, 4 mm, 5 mm or 7 mm, etc. In this way, the thoracic spine structure 1 has sufficient deformation ability. In some embodiments of the present application, the nut 15 can be a locking nut 15 to reduce the risk of nut 15 loosening.

[0098] Please refer to Figure 1 , Figure 7 and Figure 8In some embodiments of the present application, the cross section of the limiting portion 141 can be circular. In this way, it is convenient for processing and manufacturing.

[0099] Please refer to Figure 1 、 Figure 7 and Figure 8 In some embodiments of the present application, among the at least two first rigid thoracic vertebra pieces 11 and the at least two flexible thoracic vertebra pieces 12, one at one end is the first rigid thoracic vertebra piece 11, the first rigid thoracic vertebra piece 11 is formed with a countersunk groove, and the limiting portion 141 can be embedded in the countersunk groove.

[0100] Please refer to Figure 1 、 Figure 7 and Figure 8 In some embodiments of the present application, along the extension direction z of the thoracic spine structure 1, the side surface of the second rigid thoracic vertebra piece 13 away from the first rigid thoracic vertebra piece 11 is formed with a recess, and the gasket can be embedded in the recess. The nut 15 can be embedded in the recess.

[0101] Please refer to Figure 1 、 Figure 7 and Figure 8 In some embodiments of the present application, the edge of the flexible thoracic vertebra piece 12 close to the front end of the crash dummy has a first cutout 121, and the edge of the flexible thoracic vertebra piece 12 close to the rear end of the crash dummy has a second cutout 122. The first cutout 121 and the second cutout 122 both penetrate the flexible thoracic vertebra piece 12 along the transverse direction x of the crash dummy, the depth direction of the first cutout 121 and the depth direction of the second cutout 122 are both parallel to the front-rear direction y of the crash dummy, and the depth of the first cutout 121 is less than the depth of the second cutout 122.

[0102] By making the edge of the flexible thoracic vertebra piece 12 close to the front end of the crash dummy have a first cut 121, so that the thoracic spine structure 1 bends backward, the first cut 121 can be opened, so that the maximum amplitude of the thoracic spine structure 1 bends backward is larger, which is more consistent with the thoracic spine of a real human body. By making the edge of the flexible thoracic vertebra piece 12 close to the rear end of the crash dummy have a second cut 122, so that the thoracic spine structure 1 bends forward, the second cut 122 can be opened, so that the maximum amplitude of the thoracic spine structure 1 bends forward is larger, which is more consistent with the thoracic spine of a real human body. It can be understood that the greater the depth of the cut, the greater the bending amplitude of the thoracic spine structure 1, by making the depth of the first cut 121 smaller than the depth of the second cut 122, so that the maximum amplitude of the thoracic spine structure 1 bends forward is greater than the maximum amplitude of the thoracic spine structure 1 bends backward, the maximum angle of the thoracic spine of a real human body in forward bending is about 20 degrees to 35 degrees, mainly relying on the seventh to twelfth thoracic vertebrae, the maximum angle of the thoracic spine of a real human body in backward bending is about 10 degrees to 15 degrees, relying on multiple thoracic vertebrae to complete cooperatively, in the embodiment of the present application, the maximum amplitude of the thoracic spine structure 1 bends forward is greater than the maximum amplitude of the thoracic spine structure 1 bends backward, which is more consistent with the bending ability of the thoracic spine of a real human body, and has high biological fidelity, which is beneficial to improve the reliability of the crash test data.

[0103] Please refer to Figure 1 , Figure 7 and Figure 8 , it needs to be explained that in the embodiment of the present application, the depth of the first cut 121 refers to the depth of the first cut 121 along the front-rear direction y of the crash dummy. The depth of the second cut 122 refers to the depth of the second cut 122 along the front-rear direction y of the crash dummy.

[0104] Please refer to Figure 1 , Figure 7 and Figure 8 , it needs to be explained that in the embodiment of the present application, the front-rear direction y of the crash dummy, the lateral direction x of the crash dummy and the extension direction z of the thoracic spine structure 1 are perpendicular to each other.

[0105] Please refer to Figure 1 , Figure 7 and Figure 8 , in some embodiments of the present application, the first cut 121 close to the rear end of the crash dummy has a first round corner 123. In this way, the first cut 121 can open to a larger angle, and the first cut 121 is not easy to tear when it is opened.

[0106] Please refer to Figure 1 , Figure 7 and Figure 8In some embodiments of the present application, the second cutout 122 has a second rounded corner 124 close to one end in front of the crash test dummy. In this way, the maximum angle at which the second cutout 122 can open is larger, and the second cutout 122 is less likely to tear when it is open.

[0107] In some embodiments of the present application, the two tensioning ropes 14 can be arranged between the first cutout 121 and the second cutout 122 along the front-rear direction y of the crash test dummy. For example, one of the two tensioning ropes 14 can be arranged at the first rounded corner 123, and the other can be arranged at the second rounded corner 124. In this way, the two tensioning ropes 14 are far apart, and are less likely to hinder the opening of the first cutout 121 and the second cutout 122.

[0108] In some embodiments of the present application, the two tensioning ropes 14 can be arranged between the first rounded corner 123 and the second rounded corner 124 along the front-rear direction y of the crash test dummy. In this way, the two tensioning ropes 14 are less likely to hinder the opening of the first cutout 121 and the second cutout 122.

[0109] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the width of the first cutout 121 is 0.1-0.6 mm, for example 0.15 mm, 0.2 mm, 0.3 mm or 0.5 mm, when the first cutout 121 is not open. In this way, when the first cutout 121 is open, the thoracic spine structure 1 can bend more. When the first cutout 121 is not open, the width of the first cutout 121 is small, the stiffness of the thoracic spine structure 1 along the extension direction z of the thoracic spine structure 1 is high, and the cervical spine structure 6 can be stably supported.

[0110] Please refer to Figure 1 , Figure 7 and Figure 8 It should be explained that in the embodiments of the present application, the width of the first cutout 121 refers to the gap between the surfaces of the opposite sides of the first cutout 121 along the extension direction z of the thoracic spine structure 1.

[0111] Please refer to Figure 1 , Figure 7 and Figure 8In some embodiments of the present application, the width of the second cut 122 is 0.1-0.6 mm, for example 0.15 mm, 0.2 mm, 0.3 mm or 0.5 mm, etc. when the second cut 122 is not opened. In this way, when the second cut 122 is opened, the thoracic spinal structure 1 can produce a larger bending, and when the second cut 122 is not opened, the width of the second cut 122 is smaller, the stiffness of the thoracic spinal structure 1 along the extension direction z of the thoracic spinal structure 1 is higher, and the cervical spinal structure 6 can be stably and firmly supported.

[0112] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the edge of the flexible thoracic vertebra member 12 near the front end of the crash dummy has a first cut 121, the first cut 121 penetrates the flexible thoracic vertebra member 12 along the transverse direction x of the crash dummy, the depth direction of the first cut 121 is parallel to the front-rear direction y of the crash dummy, and the depth of the first cut 121 of each flexible thoracic vertebra member 12 gradually increases along the downward direction.

[0113] By gradually increasing the depth of the first cut 121 of each flexible thoracic vertebra member 12 along the downward direction, the maximum amplitude of the relative movement of the adjacent two flexible thoracic vertebra members 12 gradually increases along the downward direction, and the maximum bending amplitude of the upper end of the thoracic spinal structure 1 is relatively small, and the maximum bending amplitude of the lower end is relatively large, which is more consistent with the bending ability of the thoracic spinal structure of a real human body, and the bio-realism of the thoracic spinal structure 1 is higher, which is beneficial to improve the reliability of the crash test data.

[0114] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the depth difference between the adjacent two first cuts 121 along the downward direction can be 0.5-2 mm, for example 0.75 mm, 1 mm, 1.25 mm or 1.5 mm, etc.

[0115] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the depth of the first cut 121 with the smallest depth can be 1.5-2 mm, for example 1.75 mm.

[0116] Please refer to Figure 1 , Figure 7 and Figure 8In some embodiments of the present application, the flexible thoracic vertebra 12 has a second cutout 122 at the edge of the end close to the rear of the crash dummy, the second cutout 122 extends through the flexible thoracic vertebra 12 along the transverse direction x of the crash dummy, the depth direction of the second cutout 122 is parallel to the front-rear direction y of the crash dummy, and the depth of the second cutout 122 of each flexible thoracic vertebra 12 gradually increases in the upward direction.

[0117] Please refer to Figure 1 , Figure 7 and Figure 8 , by making the depth of the second cutout 122 of each flexible thoracic vertebra 12 gradually increase in the upward direction, the maximum amplitude of relative movement of adjacent two flexible thoracic vertebrae 12 gradually increases in the upward direction, and the maximum bending amplitude of the upper end of the thoracic spine structure 1 is relatively small, and the maximum bending amplitude of the lower end is relatively large, which is more consistent with the bending ability of the thoracic spine of a real human body, and the biofidelity of the thoracic spine structure 1 is relatively high, which is beneficial to improve the reliability of the crash test data.

[0118] Please refer to Figure 1 , Figure 7 and Figure 8 , in some embodiments of the present application, the depth difference between adjacent two second cutouts 122 in the upward direction can be 0.5 to 2 mm, for example, 0.75 mm, 1 mm, 1.25 mm or 1.5 mm, etc.

[0119] Please refer to Figure 1 , Figure 7 and Figure 8 , in some embodiments of the present application, the depth of the second cutout 122 with the smallest depth can be 1.5 to 2 mm, for example, 1.75 mm.

[0120] Please refer to Figure 1 , Figure 7 and Figure 8 , in some embodiments of the present application, the surface of at least one side of the first rigid thoracic vertebra 11 forms a mounting groove 111 in the extension direction z of the thoracic spine structure 1, and the flexible thoracic vertebra 12 is embedded in the mounting groove 111.

[0121] Please refer to Figure 1 , Figure 7 and Figure 8 , by embedding the flexible thoracic vertebra 12 in the mounting groove 111, the mounting of the flexible thoracic vertebra 12 and the thoracic spine structure 1 is more stable, which is beneficial to improve the reliability of the thoracic spine structure 1.

[0122] Please refer to Figure 1 , Figure 7 and Figure 8It can be understood that, in the embodiments of the present application, the depth direction of the mounting groove 111 is the extension direction z of the thoracic spine structure 1. In some embodiments of the present application, the depth of the mounting groove 111 can be 3-8 mm, for example, 4 mm, 5 mm, 6 mm or 7 mm, etc.

[0123] Please refer to Figure 1 , Figure 7 and Figure 8 In some embodiments of the present application, the flexible thoracic vertebra member 12 is bonded with the first rigid thoracic vertebra member 11. In this way, the connection between the flexible thoracic vertebra member 12 and the first rigid thoracic vertebra member 11 is more stable and convenient.

[0124] Please refer to Figure 1 , Figure 7 and Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 Figure 7 Figure 8 Figure 1 In some embodiments of the present application, the number of rib members 2 is the same as the number of first rigid thoracic vertebra members 11. In this way, on the one hand, the number of first rigid thoracic vertebra members 11 can meet the requirement of mounting at least two rib members 2, and on the other hand, the number of first rigid thoracic vertebra members 11 is not excessive, which is conducive to reducing the cost and improving the compactness of the structure. Moreover, when the number of first rigid thoracic vertebra members 11 is six, the number of flexible thoracic vertebra members 12 is five, and the number of rib members 2 is also six, the number of rib members 2 is consistent with the number of ribs of a Hybrid III standard dummy, so that the thoracic spine structure 1 provided in the embodiments of the present application can be well adapted to the Hybrid III standard dummy, without the need to make great adjustments to the Hybrid III standard dummy, that is, the thoracic spine structure 1 provided in the embodiments of the present application can be applied.

[0125] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way.

Claims

1. A collision dummy, characterized in that, include: sternal component; The thoracic spine structure includes at least two first rigid thoracic vertebrae and at least two flexible thoracic vertebrae. Along the extension direction of the thoracic spine structure, the first rigid thoracic vertebrae and the flexible thoracic vertebrae are alternately arranged and connected end to end in sequence. At least two rib members are fixedly connected to the first rigid thoracic vertebral member. The rib members are arranged in a one-to-one correspondence with the first rigid thoracic vertebral member. Along the extension direction of the thoracic spinal structure, at least two of the rib members are slidably connected to the sternal member. The sternal member has at least two first strip-shaped holes extending along the extension direction of the thoracic vertebral structure. The at least two first strip-shaped holes are respectively provided corresponding to at least two rib members. Fasteners are passed through the first strip-shaped holes and are passed through the rib members.

2. The collision dummy according to claim 1, characterized in that, The collision dummy also includes a shoulder structure, a flexible chest structure, and a mounting component. The flexible chest structure is fixedly connected to the thoracic spine structure through the shoulder structure. Along the front-back direction of the collision dummy, the mounting component, the sternum component, and the rib component are arranged opposite to each other in sequence, and the mounting component and the sternum component together clamp the flexible chest structure. The mounting component has at least two second strip-shaped holes, which are respectively provided corresponding to the at least two ribs. Along the front-rear direction of the collision dummy, the second strip-shaped holes are aligned with the corresponding first strip-shaped holes, and the fasteners are inserted through the second strip-shaped holes.

3. The collision dummy according to claim 1, characterized in that, The first rigid thoracic vertebra is fixedly connected to the adjacent flexible thoracic vertebra.

4. The collision dummy according to claim 1, characterized in that, The number of the first rigid thoracic vertebral components is six, and the number of the flexible thoracic vertebral components is five; The thoracic spine structure also includes a second rigid thoracic vertebra, wherein one of the at least two first rigid thoracic vertebrae is connected end-to-end with the second rigid thoracic vertebra.

5. The collision dummy according to claim 1, characterized in that, It also includes two tension ropes, which are threaded through at least two of the first rigid thoracic vertebrae and at least two of the flexible thoracic vertebrae. The two tension ropes at both ends are fixedly connected to the ends of the tension ropes respectively. Along the front-back direction of the collision dummy, the two tension ropes are located at both ends of the thoracic spinal structure.

6. The collision dummy according to claim 1, characterized in that, The flexible thoracic vertebrae have a first incision at the edge near the front of the impact dummy, and a second incision at the edge near the rear of the impact dummy. Both the first and second incisions penetrate the flexible thoracic vertebrae along the transverse direction of the impact dummy. The depth directions of the first and second incisions are parallel to the anterior-posterior direction of the impact dummy, and the depth of the first incision is less than the depth of the second incision.

7. The collision dummy according to claim 1, characterized in that, The flexible thoracic vertebrae have a first incision at one end near the front of the collision dummy. The first incision extends through the flexible thoracic vertebrae along the transverse direction of the collision dummy. The depth of the first incision is parallel to the front-back direction of the collision dummy. The depth of the first incision in each flexible thoracic vertebrae gradually increases from top to bottom. And / or, the edge of the flexible thoracic vertebrae near the rear end of the impact dummy has a second incision, the second incision penetrating the flexible thoracic vertebrae along the transverse direction of the impact dummy, the depth direction of the second incision being parallel to the anterior-posterior direction of the impact dummy, and the depth of the second incision of each flexible thoracic vertebrae gradually increasing from top to bottom.

8. The collision dummy according to claim 1, characterized in that, Along the extension direction of the thoracic spine structure, at least one side of the surface of the first rigid thoracic vertebra is formed with a mounting groove, and the flexible thoracic vertebra is embedded in the mounting groove.

9. The collision dummy according to any one of claims 1 to 8, characterized in that, The number of the rib members is the same as the number of the first rigid thoracic vertebrae.

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