Safety test dummy

Abstract

The application discloses a safety test dummy, and relates to the technical field of automobile collision safety test, which comprises a head, a neck assembly and a spine box assembly. The neck assembly comprises an elastic deformation body to enable the head to move relative to the spine box assembly. The spine box assembly comprises an upper spine box assembly, an elastic member and a lower spine box assembly. The upper spine box assembly is connected with the neck assembly, the lower spine box assembly is connected with the hip, the elastic member is used to apply an elastic force to the upper spine box assembly to keep the lower spine box assembly vertically above, and the upper spine box assembly moves against the elastic force of the elastic member when subjected to inertia. The safety test dummy of the application can move forward with the head and the neck assembly to make the elastic member generate an elastic force, and can restore to the original position under the action of the elastic force of the elastic member, so that the neck assembly and the spine box assembly are cooperatively linked and matched, and the motion state of the human body during collision is simulated.

Description

Technical Field

[0001] This invention relates to the field of automotive crash safety testing technology, and more particularly to a safety testing dummy. Background Technology

[0002] Safety test dummies are crucial equipment in automotive crash testing. By collecting sensor data from the dummies during a collision, the extent of injury to the dummies can be assessed, thus characterizing the injuries sustained by humans in actual collisions. Among related technologies, traditional dummies cannot simulate the coordinated forward tilting dynamics of the neck and spine during a collision, leaving room for improvement. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a safety testing dummy that enables coordinated linkage between the neck assembly and the spine box assembly, facilitating the simulation of the coordinated forward tilting dynamic movement of the neck and spine during a human collision.

[0004] A safety test dummy according to an embodiment of the present invention includes: a head, a neck assembly, and a spine box assembly. The neck assembly is connected between the head and the spine box assembly. The neck assembly includes an elastic deformable body to allow the head to move relative to the spine box assembly. The spine box assembly includes an upper spine box assembly, an elastic element, and a lower spine box assembly. The upper spine box assembly is connected to the neck assembly, and the lower spine box assembly is connected to the buttocks. The upper spine box assembly is movably connected to the lower spine box assembly to move back and forth relative to the lower spine box assembly. The elastic element is connected between the upper and lower spine box assemblies and is used to apply an elastic force to the upper spine box assembly to hold it vertically upward relative to the lower spine box assembly. When subjected to inertia, the upper spine box assembly overcomes the elastic force of the elastic element and moves relative to the lower spine box assembly.

[0005] According to an embodiment of the present invention, the upper spine box assembly of the safety test dummy can move forward in coordination with the head and neck assembly to generate elastic force in the elastic element, and can return to its original position under the action of the elastic force of the elastic element, thereby realizing the coordinated linkage between the neck assembly and the spine box assembly, which is beneficial to simulating the motion state of the human body during a collision.

[0006] According to some embodiments of the present invention, the safety test dummy, the neck assembly further includes an upper connector and a lower connector, the upper connector being connected to the head, the lower connector being connected to the upper spine box assembly, and the elastic deformable body being connected between the upper connector and the lower connector.

[0007] According to some embodiments of the present invention, in a safety test dummy, the lower part of the upper spinal box assembly is rotatably connected to the upper part of the lower spinal box assembly, and the elastic element is constructed as a coil spring, one end of the coil spring being fixed relative to the upper spinal box assembly, and the other end of the coil spring being fixed relative to the lower spinal box assembly.

[0008] According to some embodiments of the present invention, the safety test dummy further includes a coil spring seat, the coil spring seat including a connected connecting portion and a mounting shaft portion, the connecting portion being fixed relative to one of the upper spine box assembly and the lower spine box assembly, the coil spring being sleeved outside the mounting shaft portion, the inner end of the coil spring being fixed relative to the mounting shaft portion and the outer end being fixed relative to the other of the upper spine box assembly and the lower spine box assembly.

[0009] According to some embodiments of the present invention, the safety test dummy includes an upper spine box assembly comprising an upper spine box and an upper support member. The upper spine box is used to connect to the neck assembly, and the upper support member is connected below the upper spine box and fixed relative to the coil spring.

[0010] And / or, the lower spine box assembly includes a lower spine box and a lower support member, the lower spine box being connected to the buttock, the lower support member being connected above the lower spine box, and the lower support member being fixed relative to the connecting portion.

[0011] According to some embodiments of the present invention, in the safety test dummy, the upper support member has a receiving cavity, and the axial ends of the receiving cavity have through holes. The mounting shaft passes through the through holes to penetrate the upper support member, and the coil spring is located in the receiving cavity and its outer end is connected to the interior of the receiving cavity.

[0012] And / or, the upper spine box assembly further includes a lower neck support, the lower neck support being connected above the upper spine box, and the upper spine box being connected to the neck assembly via the lower neck support.

[0013] According to some embodiments of the present invention, the safety test dummy includes an elastic deformable body comprising a main body and an elastic gradient part. The two ends of the main body are respectively connected to the upper connecting body and the lower connecting body. The elastic gradient part is located on the front side of the main body, and the elastic modulus of the elastic gradient part is less than the elastic modulus of the main body.

[0014] According to some embodiments of the present invention, in a safety test dummy, the main body is formed with an annular mounting groove extending circumferentially, and the main body is formed with a forward-opening mounting notch, the mounting notch communicating with the portion of the annular mounting groove located on the front side of the main body, and the elastic gradient portion is located within the mounting notch.

[0015] According to some embodiments of the present invention, in the safety test dummy, there are multiple annular mounting grooves, and the multiple annular mounting grooves are spaced apart along the length direction of the main body, and each annular mounting groove is provided with the mounting notch and the elastic gradient portion.

[0016] According to some embodiments of the present invention, in a safety test dummy, the mounting notches corresponding to the plurality of annular mounting grooves are distributed facing each other along the length direction of the main body.

[0017] And / or, the depth of the corresponding mounting notches in the annular mounting grooves in the radial direction of the main body is set to decrease sequentially from top to bottom, and the width of the multiple elastic gradient portions in the radial direction of the main body is set to decrease sequentially from top to bottom.

[0018] 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. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of a safety test dummy according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of a safety test dummy according to an embodiment of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the spine box assembly according to an embodiment of the present invention. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the spine box assembly according to an embodiment of the present invention. Figure 2 ;

[0024] Figure 5 This is a schematic diagram of the neck assembly according to an embodiment of the present invention. Figure 1 ;

[0025] Figure 6 This is a schematic diagram of the neck assembly according to an embodiment of the present invention. Figure 2 ;

[0026] Figure 7 This is a schematic diagram of the structure of the elastic deformable body according to an embodiment of the present invention;

[0027] Figure 8 yes Figure 7 Cross-sectional view at point AA;

[0028] Figure 9 yes Figure 7 Cross-sectional view at point BB.

[0029] Figure label:

[0030] 100 safety test dummies

[0031] Head 1,

[0032] Neck assembly 2, elastic deformable body 21, main body 211, annular mounting groove 2111, mounting notch 2112, elastic gradient part 212, upper connector 22, lower connector 23, through hole structure 24.

[0033] Spine box assembly 3, upper spine box assembly 31, upper spine box 311, upper support 312, through hole 313, lower cervical support 314, coil spring 32, inner end 321, outer end 322, lower spine box assembly 33, lower spine box 331, lower support 332, coil spring seat 34, connecting part 341, mounting shaft part 342, chest adapter 35, bolt 36, connecting hole 37.

[0034] Hips 4. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] In the development and evaluation of vehicle safety systems, the biosimulation degree of the safety test dummy 100 is fundamental to obtaining effective data. That is, the higher the biosimulation degree of the safety test dummy 100, the more realistic and effective data users can obtain. Specifically, the test dummy is an anthropomorphic device that simulates the human body and has a structure similar to the human body. Sensors can be installed at key positions of the test dummy. The sensors can collect physical quantities such as acceleration, displacement, and force. Users can assess the damage suffered by the test dummy by collecting the output data of the test dummy's sensors, and then characterize the actual injury situation of the human body during a collision by using the damage situation of the test dummy.

[0039] The human body's motion during a collision is a dynamic process involving both active and passive responses, involving the nervous and muscular systems. At the moment of impact, the neck and trunk muscles actively contract and tighten, putting the spine in a preparatory state with higher rigidity and storing elastic potential energy. Furthermore, when the impact force acts on the body, the muscles in the pre-tightened state actively guide and regulate the body's trajectory, thereby driving the neck and spine to tilt forward as a whole during the collision.

[0040] Traditional biomimetic test dummies use complex mechanical structures to simulate the dynamic process of active-passive fusion involving the nervous and muscular systems in the human body. However, the structure of highly biomimetic test dummies is extremely complex, and the manufacturing and maintenance costs are high, making it difficult to conduct more extensive and large-scale engineering tests. In addition, traditional test dummies with simple structures can only simulate the passive dynamic characteristics of human bones, ligaments and other tissues, and cannot effectively simulate the physiological characteristics of active-passive fusion involving the nervous and muscular systems in the human body.

[0041] The following is for reference. Figures 1-9 The safety test dummy 100 described in this embodiment of the invention can achieve coordinated linkage between the neck assembly 2 and the spine box assembly 3, which is beneficial for simulating the coordinated forward tilting dynamic movement of the neck and spine during a human collision.

[0042] like Figure 2 As shown, the safety test dummy 100 according to an embodiment of the present invention includes: a head 1, a neck assembly 2, and a spine box assembly 3.

[0043] The neck assembly 2 is connected between the head 1 and the spine box assembly 3. The neck assembly 2 includes an elastic deformable body 21 to enable the head 1 to move relative to the spine box assembly 3. For example, in the event of a frontal collision, the head 1 moves relative to the spine box assembly 3 in the longitudinal direction through the elastic deformation of the elastic deformable body 21, or when the vehicle is subjected to forces in other directions, such as in a side collision, the head 1 moves relative to the spine box assembly 3 in the lateral direction of the vehicle through the elastic deformation of the elastic deformable body 21. In other words, the head 1 can move relative to the spine box assembly 3 via the neck assembly 2, thereby allowing the head 1 of the safety test dummy 100 to move when it is hit. For example, when it is hit, the neck assembly 2 of the safety test dummy 100 can bend forward, thereby allowing the head 1 of the safety test dummy 100 to tilt forward, or the neck assembly 2 of the safety test dummy 100 can bend backward, thereby allowing the head 1 of the safety test dummy 100 to tilt backward, or the neck assembly 2 of the safety test dummy 100 can bend in other directions, thereby allowing the head 1 of the safety test dummy 100 to bend in other directions.

[0044] Therefore, by means of the neck assembly 2 which can bend forward, backward or in other directions, the safety test dummy 100 can simulate the motion state of the human body when it is hit by a collision, thereby improving the biosimulation degree of the safety test dummy 100 and the accuracy of the test data.

[0045] Among them, the elastic deformable body 21 can generate elastic deformation when subjected to force. For example, when the safety test dummy 100 is hit by a collision, the impact force can be transmitted to the elastic deformable body 21, thereby causing the elastic deformable body 21 to elastically deform, thereby realizing the forward movement of the head 1 relative to the spine box assembly 3, or the backward movement of the head 1 relative to the spine box assembly 3. The specific direction of movement can be adaptively controlled by the deformation state of the elastic deformable body 21 after being subjected to force, thereby realizing the simulation of the motion state of the human body when it is hit by a collision, thereby improving the biosimulation degree of the safety test dummy 100 and the accuracy of the test data.

[0046] The spine box assembly 3 includes an upper spine box component 31, an elastic element, and a lower spine box component 33. The upper spine box component 31 is connected to the neck assembly 2, and the lower spine box component 33 is connected to the hip 4. The upper spine box component 31 is movably connected to the lower spine box component 33 to move back and forth relative to the lower spine box component 33. That is, the upper spine box component 31 can drive the neck assembly 2 to move back and forth relative to the lower spine box component 33 and the hip 4. For example, the upper spine box component 31 can drive the neck assembly 2 to move forward relative to the lower spine box component 33 and the hip 4, or the upper spine box component 31 can drive the neck assembly 2 to move backward relative to the lower spine box component 33 and the hip 4, thereby simulating the motion state of the human body when it is hit by a collision, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100.

[0047] Specifically, when a vehicle collides, the impact force can be transmitted sequentially through the seat to the buttocks 4 and the spine box assembly 3. When the impact force is transmitted to the upper spine box assembly 31, the upper spine box assembly 31 can move forward or backward relative to the lower spine box assembly 33 under the action of the impact force. The neck assembly 2, which is connected to the upper spine box assembly 31, moves forward or backward synchronously under the drive of the upper spine box assembly 31. Thus, the linkage between the upper spine box assembly 31 and the neck assembly 2 is realized, which is conducive to simulating the movement state of the human body.

[0048] Furthermore, an elastic element is connected between the upper spinal box assembly 31 and the lower spinal box assembly 33. The elastic element applies an elastic force to the upper spinal box assembly 31 to maintain it vertically upward relative to the lower spinal box assembly 33. When subjected to inertia, the upper spinal box assembly 31 overcomes the elastic force of the elastic element and moves relative to the lower spinal box assembly 33. That is, when the upper spinal box assembly 31 moves forward or backward relative to the lower spinal box assembly 33, the elastic element can generate an elastic force that returns the upper spinal box assembly 31 to its original position.

[0049] Specifically, when the impact force is transmitted to the upper spinal box assembly 31 to cause the upper spinal box assembly 31 to move forward or backward, the elastic element generates an elastic force opposite to the direction of movement of the upper spinal box assembly 31 under the action of the movement of the upper spinal box assembly 31, thereby causing the upper spinal box assembly 31 to move against the elastic force. After the movement of the upper spinal box assembly 31 ends, the elastic force drives the upper spinal box assembly 31 to move in the direction of returning to its original position, thereby driving the neck assembly 2 to return to its original position together.

[0050] Therefore, by setting an elastic element, when the upper spine box assembly 31 moves the neck assembly 2 forward or backward, the upper spine box assembly 31 can move against the elastic force, thereby reducing the movement speed of the upper spine box assembly 31 and thus simulating the spinal movement state of the human body during a collision. After the upper spine box assembly 31 finishes moving, it can be driven to move to the vertical position above the lower spine box assembly 33, so that the upper spine box assembly 31 can return to its original position, thereby simulating the movement state of the human body when it is hit by a collision.

[0051] In the event of a collision, the head 1 tilts forward due to inertia, and the neck assembly 2 undergoes elastic deformation under the influence of the head 1. This causes the head 1 to tilt forward relative to the upper spinal box assembly 31. The head 1 can also exert a force on the upper spinal box assembly 31 through the neck assembly 2, thereby causing the upper spinal box assembly 31 to move forward relative to the lower spinal box assembly 33. At this time, the impact force from the neck assembly 2 and the lower spinal box assembly 33 both cause the upper spinal box assembly 31 to move forward relative to the lower spinal box assembly 33. After the collision, the elastic element can cause the upper spinal box assembly 31 to return to its original position, and the elastic force can be transmitted upward to the neck assembly 2 so that the neck assembly 2 can cause the head 1 to return to its original position. This achieves coordinated linkage between the neck assembly 2 and the spinal box assembly 3, which is beneficial for simulating the coordinated forward tilting dynamic movement of the neck and spine during a collision, thereby improving the biosimulation of the safety test dummy 100 and the accuracy of the test data.

[0052] Furthermore, by simply setting elastic elements and elastic deformable bodies 21 on the safety test dummy 100, the active and passive responses of the human neuromuscular system and the passive responses of the skeletal ligaments during a collision can be simulated. This allows the safety test dummy 100 to more realistically simulate the human motion state during a collision. The structure is simple, the cost is low, and it can be seamlessly adapted to the original dummy, thus meeting the calibration performance requirements of the safety test dummy 100.

[0053] Specifically, the elastic element can generate elastic deformation when the upper spinal box assembly 31 rotates relative to the lower spinal box assembly 33, that is, elastic potential energy can be generated in the elastic element. At this time, the elastic element can apply an elastic force to the upper spinal box assembly 31 to restore it to its original position. Under the action of the elastic force, the upper spinal box assembly 31 can return to the position located vertically above the lower spinal box assembly 33. Thus, the energy storage and release mechanism of the elastic element for muscle pretension can be simulated, and the elastic element can drive the upper spinal box assembly 31 to rebound autonomously.

[0054] Furthermore, the elastic deformable body 21 on the neck assembly 2 can simulate the physiological state exhibited by the pre-activated neck muscles of the human body during a collision.

[0055] Therefore, the elastic element can work in conjunction with the elastic deformable body 21 to simulate the physiological state of human bones, ligaments and muscles, that is, to achieve the dynamic response of cervical-spine linkage forward tilting, so that the safety test dummy 100 has basic active and passive fusion characteristics.

[0056] According to the safety test dummy 100 of the present invention, the upper spine box assembly 31 can move forward in coordination with the head 1 and the neck assembly 2 to generate elastic force in the elastic element, and can return to its original position under the action of the elastic force of the elastic element, thereby realizing the coordinated linkage between the neck assembly 2 and the spine box assembly 3, which is beneficial to simulating the motion state of the human body during a collision.

[0057] In some embodiments, the neck assembly 2 further includes an upper connector 22 and a lower connector 23. The upper connector 22 is connected to the head 1, and the lower connector 23 is connected to the upper spine box assembly 31. An elastic deformable body 21 is connected between the upper connector 22 and the lower connector 23. That is, the neck assembly 2 is connected to the head 1 and the upper spine box assembly 31 through the upper connector 22 and the lower connector 23, and the elastic deformable body 21 is disposed between the upper connector 22 and the lower connector 23 to allow the neck assembly 2 to elastically deform.

[0058] like Figure 5 and Figure 6 As shown, the upper connector 22 and the lower connector 23 are connected by an elastic deformable body 21. The upper connector 22 is connected to the head 1, and the lower connector 23 is connected to the upper spine box assembly 31. When the head 1 tilts forward, the upper connector 22 can drive the elastic deformable body 21 to produce elastic deformation, thereby allowing the neck assembly 2 to move relative to the upper spine box assembly 31. For example, the elastic deformable body 21 can reduce the volume of the front side of the neck assembly 2, at which time the head 1 connected to the neck assembly 2 can move forward. Or, the elastic deformable body 21 can reduce the volume of the rear side of the neck assembly 2, at which time the head 1 connected to the neck assembly 2 can move backward.

[0059] Specifically, during a collision, the head 1 tilts forward due to inertia, and the neck assembly 2 undergoes elastic deformation under the influence of the head 1, causing the head 1 to tilt forward relative to the upper spinal box assembly 31. The head 1 can also exert a force on the upper spinal box assembly 31 through the neck assembly 2, thereby causing the upper spinal box assembly 31 to move forward relative to the lower spinal box assembly 33. At this time, the impact force from the neck assembly 2 and the lower spinal box assembly 33 both cause the upper spinal box assembly 31 to move forward relative to the lower spinal box assembly 33. Furthermore, the elastic element can cause the upper spinal box assembly 31 to return to its original position, and the elastic force can be transmitted upward to the neck assembly 2 so that the neck assembly 2 can cause the head 1 to return to its original position.

[0060] Therefore, the neck assembly 2 can connect the head 1 to the upper spine box assembly 31 through the upper connector 22 and the lower connector 23, and the elastic deformable body 21 can make the head 1 move back and forth relative to the upper spine box assembly 31, thereby realizing the coordinated linkage between the neck assembly 2 and the spine box assembly 3, which is conducive to simulating the coordinated forward tilting dynamic movement of the neck and spine of the human body during the collision process, thereby improving the biosimulation degree of the safety test dummy 100 and the accuracy of the test data.

[0061] In some embodiments, the lower part of the upper spine box assembly 31 is rotatably connected to the upper part of the lower spine box assembly 33, and the elastic element is constructed as a coil spring 32. One end of the coil spring 32 is fixed relative to the upper spine box assembly 31, and the other end of the coil spring 32 is fixed relative to the lower spine box assembly 33. That is, the upper spine box assembly 31 and the lower spine box assembly 33 can rotate relative to each other, and the coil spring 32 can generate an elastic force when the upper spine box assembly 31 and the lower spine box assembly 33 rotate.

[0062] like Figure 3 and Figure 4 As shown, the lower end of the upper spinal box assembly 31 extending downwards is rotatably connected to the upper end of the lower spinal box assembly 33 extending upwards. That is, the upper spinal box assembly 31 and the lower spinal box assembly 33 can rotate relative to each other. For example, the upper spinal box assembly 31 can rotate forward relative to the lower spinal box assembly 33 to achieve forward tilting of the upper spinal box assembly 31, or the upper spinal box assembly 31 can rotate backward relative to the lower spinal box assembly 33 to achieve backward tilting of the upper spinal box assembly 31. Furthermore, the two ends of the coil spring 32 are respectively connected to the upper spinal box assembly 31 and the lower spinal box assembly 33. One end of the coil spring 32 is connected to the upper spinal box assembly 31, and the other end of the coil spring 32 is connected to the lower spinal box assembly 33, so that the coil spring 32 can generate elastic force when the upper spinal box assembly 31 and the lower spinal box assembly 33 rotate relative to each other.

[0063] Specifically, when the upper spine box assembly 31 tilts forward, it can cause the coil spring 32 connected to it to deform. At this time, the coil spring 32 generates a backward elastic force, so that the upper spine box assembly 31 can move backward under the action of the elastic force. Or, when the upper spine box assembly 31 tilts backward, it can cause the coil spring 32 connected to it to deform. At this time, the coil spring 32 generates a forward elastic force, so that the upper spine box assembly 31 can move forward under the action of the elastic force.

[0064] When the head 1 tilts forward due to inertia, the neck assembly 2 can apply a force to the upper spine box assembly 31 to tilt it forward, and the coil spring 32 will undergo elastic deformation, that is, elastic potential energy can be generated in the coil spring 32. At this time, the coil spring 32 can apply an elastic force to the upper spine box assembly 31 to restore it to its original position. The upper spine box assembly 31 can be restored to the position vertically above the lower spine box assembly 33 under the action of the elastic force.

[0065] Therefore, by connecting the coil spring 32 to the upper spine box assembly 31 and the lower spine box assembly 33 respectively, an elastic force opposite to the movement direction of the upper spine box assembly 31 can be generated. That is, by setting the coil spring 32, when the upper spine box assembly 31 drives the neck assembly 2 to move forward or backward, the upper spine box assembly 31 can move against the elastic force, thereby reducing the movement speed of the upper spine box assembly 31, thus simulating the spinal movement state of the human body during a collision. After the movement of the upper spine box assembly 31 is completed, it can be driven to move to the vertical position above the lower spine box assembly 33, so that the upper spine box assembly 31 can return to its original position. This achieves the coordinated linkage between the neck assembly 2 and the spine box assembly 3, which is conducive to simulating the coordinated forward tilting dynamic movement of the neck and spine of the human body during a collision, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100.

[0066] In some embodiments, the safety test dummy 100 further includes a coil spring seat 34, which includes a connecting portion 341 and a mounting shaft portion 342 connected together. The connecting portion 341 is fixed relative to one of the upper spine box assembly 31 and the lower spine box assembly 33. The coil spring 32 is sleeved on the mounting shaft portion 342, with its inner end 321 fixed relative to the mounting shaft portion 342 and its outer end 322 fixed relative to the other of the upper spine box assembly 31 and the lower spine box assembly 33. In other words, the coil spring 32 can be connected to the upper spinal box assembly 31 and the lower spinal box assembly 33 respectively through the coil spring seat 34. That is, the connecting part 341 can be fixed relative to the upper spinal box assembly 31, the coil spring 32 is sleeved on the mounting shaft part 342 and the outer end 322 of the coil spring 32 is fixed relative to the lower spinal box assembly 33, or the connecting part 341 can be fixed relative to the lower spinal box assembly 33, the coil spring 32 is sleeved on the mounting shaft part 342 and the outer end 322 of the coil spring 32 is fixed relative to the upper spinal box assembly 31. Both can achieve the connection between the coil spring 32 and the upper spinal box assembly 31 and the lower spinal box assembly 33.

[0067] Specifically, such as Figure 3As shown, the connecting part 341 can be fixed relative to the lower spine box assembly 33. The coil spring 32 is sleeved on the outside of the mounting shaft part 342, and the inner end 321 of the coil spring 32 is fixed relative to the mounting shaft part 342. The inner end 321 of the coil spring 32 can be welded to the mounting shaft part 342. The outer end 322 of the coil spring 32 is fixed relative to the upper spine box assembly 31. The outer end 322 of the coil spring 32 can be welded to the upper spine box assembly 31. When the upper spine box assembly 31 tilts forward, the coil spring can be driven. The outer end 322 of the coil spring 32 moves together with the upper spinal box assembly 31, thereby causing the coil spring 32 to undergo elastic deformation and apply a rearward elastic force to the upper spinal box assembly 31, so that the upper spinal box assembly 31 can return to its original position. When the upper spinal box assembly 31 tilts backward, it can drive the outer end 322 of the coil spring 32 to move together with the upper spinal box assembly 31, thereby causing the coil spring 32 to undergo elastic deformation and apply a forward elastic force to the upper spinal box assembly 31, so that the upper spinal box assembly 31 can return to its original position.

[0068] Therefore, by setting the connecting part 341 and the mounting shaft part 342, the outer end 322 and the inner end 321 of the coil spring 32 can be connected to the upper spine box assembly 31 and the lower spine box assembly 33 respectively. The coil spring 32 can generate an elastic force opposite to the movement direction of the upper spine box assembly 31. That is, when the upper spine box assembly 31 drives the neck assembly 2 to move forward or backward, the coil spring 32 can make the upper spine box assembly 31 move against the elastic force, thereby reducing the movement speed of the upper spine box assembly 31, thus simulating the spinal movement state of the human body during a collision. After the movement of the upper spine box assembly 31 is completed, it can drive the upper spine box assembly 31 to move vertically above the lower spine box assembly 33, so that the upper spine box assembly 31 can return to its original position. This achieves the coordinated linkage between the neck assembly 2 and the spine box assembly 3, which is conducive to simulating the coordinated forward tilting dynamic movement of the neck and spine of the human body during a collision, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100.

[0069] Among them, such as Figure 3 As shown, the connecting part 341 and the lower spine box assembly 33 can be connected by bolts 36. Connecting holes 37 can be provided on the connecting part 341 and the lower spine box assembly 33 respectively. For example, four connecting holes 37 can be provided on the connecting part 341 and four connecting holes 37 can be provided on the lower spine box assembly 33. The connecting holes 37 on the connecting part 341 and the lower spine box assembly 33 are matched one-to-one. When connecting and fixing the connecting part 341 and the lower spine box assembly 33, four bolts 36 can be used to pass through the four connecting holes 3 respectively, thus realizing the bolt connection between the connecting part 341 and the lower spine box assembly 33. The structure is simple and the installation is convenient.

[0070] In some embodiments, the upper spine box assembly 31 includes an upper spine box 311 and an upper support member 312. The upper spine box 311 is connected to the neck assembly 2, and the upper support member 312 is connected below the upper spine box 311 and is fixed relative to the coil spring 32. Specifically, as Figure 3 and Figure 4 As shown, the upper support member 312 is located below the upper spine box 311, and the upper support member 312 is fixed relative to the coil spring 32. When the upper spine box 311 tilts forward, it can drive the upper support member 312 and the coil spring 32 to rotate, thereby causing the coil spring 32 to generate an elastic force that tilts the upper support member 312 and the upper spine box 311 backward. When the upper spine box 311 tilts backward, it can drive the upper support member 312 and the coil spring 32 to rotate, thereby causing the coil spring 32 to generate an elastic force that tilts the upper support member 312 and the upper spine box 311 forward.

[0071] And / or, in other embodiments, the lower spine box assembly 33 includes a lower spine box 331 and a lower support member 332. The lower spine box 331 is for connection to the buttocks 4, and the lower support member 332 is connected above the lower spine box 331 and is fixed relative to the connecting portion 341. Specifically, as Figure 3 and Figure 4 As shown, the lower support 332 is disposed above the lower spine box 331, and the lower support 332 is fixed relative to the connecting part 341. When the upper spine box assembly 31 tilts forward, the coil spring 32 deforms to generate an elastic force that tilts the upper spine box assembly 31 backward. When the upper spine box assembly 31 tilts backward, the coil spring 32 deforms to generate an elastic force that tilts the upper spine box assembly 31 forward.

[0072] Thus, the upper spinal box 311 and the lower spinal box 331 can be connected to the coil spring 32 through the upper support member 312 and the lower support member 332, so that the coil spring 32 can generate an elastic force opposite to the movement direction of the upper spinal box assembly 31, thereby reducing the movement speed of the upper spinal box assembly 31, thereby simulating the spinal movement state of the human body during a collision, and allowing the upper spinal box assembly 31 to return to its original position, thus simulating the movement state of the human body when it is hit by a collision.

[0073] Furthermore, the upper spinal box assembly 31 and the lower spinal box assembly 33 can be rotatably connected via the upper support member 312 and the lower support member 332, thereby allowing the upper spinal box assembly 31 and the lower spinal box assembly 33 to rotate relative to each other. For example, the upper spinal box assembly 31 can rotate forward relative to the lower spinal box assembly 33 to achieve forward tilting of the upper spinal box assembly 31, or the upper spinal box assembly 31 can rotate backward relative to the lower spinal box assembly 33 to achieve backward tilting of the upper spinal box assembly 31. Specifically, the upper support member 312 and the lower support member 332 are rotatably connected. When the upper support member 312 rotates relative to the lower support member 332, it can drive the upper spinal box 311 to rotate relative to the lower spinal box 331, that is, to achieve rotation of the upper spinal box assembly 31 relative to the lower spinal box assembly 33. The movement of the coil spring 32 can generate an elastic force opposite to the direction of movement of the upper spine box assembly 31. That is, when the upper spine box assembly 31 drives the neck assembly 2 to move forward or backward, the coil spring 32 can cause the upper spine box assembly 31 to move against the elastic force, thereby reducing the movement speed of the upper spine box assembly 31 and simulating the spinal movement state of the human body during a collision. After the movement of the upper spine box assembly 31 is completed, it can drive the upper spine box assembly 31 to move vertically above the lower spine box assembly 33, so that the upper spine box assembly 31 can return to its original position. This achieves coordinated linkage between the neck assembly 2 and the spine box assembly 3, which is conducive to simulating the coordinated forward tilting dynamic movement of the neck and spine of the human body during a collision, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100.

[0074] The lower spine box 331 can be connected to the buttocks 4 via the chest adapter 35. The chest adapter 35 can be installed and fixed below the lower spine box 331. It can be fixed by welding and the chest adapter 35 can be connected to the buttocks 4, thereby realizing the connection between the spine box assembly 3 and the buttocks 4.

[0075] In some embodiments, a receiving cavity is formed within the upper support member 312, and through holes 313 are formed at both axial ends of the receiving cavity. A mounting shaft portion 342 passes through the through holes 313 to penetrate the upper support member 312. A coil spring 32 is located within the receiving cavity, and its outer end 322 is connected to the interior of the receiving cavity. That is, the mounting shaft portion 342 can penetrate the receiving cavity to connect the coil spring seat 34 and the upper support member 312, thereby allowing the upper support member 312 to rotate relative to the coil spring seat 34. The coil spring 32 can be fixed relative to the upper support member 312 within the receiving cavity so that the upper support member 312 can drive the coil spring 32 to produce elastic deformation.

[0076] Specifically, such as Figure 3As shown, through holes 313 are formed at both axial ends of the receiving cavity, and the mounting shaft 342 passes through the through holes 313. At this time, the upper support 312 can rotate relative to the coil spring seat 34 around the mounting shaft 342. The coil spring 32 is sleeved on the outside of the mounting shaft 342, and the inner end 321 of the coil spring 32 is fixed relative to the mounting shaft 342. If the inner end 321 of the coil spring 32 can be welded to the mounting shaft 342, the coil spring 32 is set in the receiving cavity. The outer end 322 of the coil spring 32 can be connected to the inside of the receiving cavity. If the outer end 322 of the coil spring 32 can be welded to the inside of the receiving cavity, the inner end 321 of the coil spring 32 is fixed relative to the mounting shaft 342, and the outer end 322 of the coil spring 32 is fixed relative to the upper support 312.

[0077] Therefore, through the insertion and engagement of the receiving cavity of the upper support member 312 and the mounting shaft 342, the upper spine box 311 can rotate relative to the coil spring seat 34, and the coil spring 32 can be fixed relative to the upper support member 312 and the mounting shaft 342 respectively, so that the coil spring 32 can generate an elastic force opposite to the movement direction of the upper spine box assembly 31. That is, when the upper spine box assembly 31 drives the neck assembly 2 to move forward or backward, the coil spring 32 can make the upper spine box assembly 31 move against the elastic force, thereby reducing the movement speed of the upper spine box assembly 31, thus simulating the spinal movement state of the human body during a collision. After the movement of the upper spine box assembly 31 is completed, it can drive the upper spine box assembly 31 to move vertically above the lower spine box assembly 33, so that the upper spine box assembly 31 can return to its original position, thereby realizing the coordinated linkage between the neck assembly 2 and the spine box assembly 3, which is conducive to simulating the coordinated forward tilting dynamic movement of the neck and spine of the human body during a collision, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100.

[0078] Furthermore, the coil spring 32 can be disposed within the receiving cavity, that is, the receiving cavity can protect the coil spring 32, thereby preventing external foreign objects from affecting the elastic deformation of the coil spring 32.

[0079] And / or, in other embodiments, the upper spine box assembly 31 further includes a lower neck support 314, which is connected above the upper spine box 311, and the upper spine box 311 is connected to the neck assembly 2 via the lower neck support 314. That is, the upper spine box 311 and the neck assembly 2 can be connected via the lower neck support 314, thereby realizing the coordinated linkage between the neck assembly 2 and the upper spine box assembly 31.

[0080] Specifically, such as Figure 3 and Figure 4As shown, the lower neck support 314 is positioned above the upper spine box 311. The neck assembly 2 can be connected to the lower neck support 314, thereby connecting the neck assembly 2 with the upper spine box assembly 31. In the event of a collision, the head 1 tilts forward due to inertia, and the neck assembly 2 undergoes elastic deformation under the influence of the head 1, causing the head 1 to tilt forward relative to the upper spine box assembly 31. The head 1 can also exert a force on the upper spine box assembly 31 through the neck assembly 2, thereby causing the upper spine box assembly 31 to move forward relative to the lower spine box assembly 33. At this time, the impact force from the neck assembly 2 and the lower spine box assembly 33 both cause the upper spine box assembly 31 to move forward relative to the lower spine box assembly 33.

[0081] Furthermore, when the impact force is transmitted to the upper spinal box assembly 31 through the seat, the upper spinal box assembly 31 rotates relative to the lower spinal box assembly 33, and the upper spinal box assembly 31 can drive the head 1 to move back and forth through the lower neck support 314. For example, when the upper spinal box assembly 31 is tilted forward relative to the lower spinal box assembly 33, the head 1 can be driven to move forward through the neck assembly 2. When the upper spinal box assembly 31 is tilted backward relative to the lower spinal box assembly 33, the head 1 can be driven to move backward through the neck assembly 2.

[0082] Therefore, by setting the lower neck support 314 to connect the neck assembly 2 with the upper spine box assembly 31, the head 1, the neck assembly 2 and the upper spine box assembly 31 can be linked together. This allows the upper spine box assembly 31 to drive the head 1 to move back and forth, and the head 1 can also drive the upper spine box assembly 31 to move back and forth under the action of inertia. This achieves coordinated linkage between the neck assembly 2 and the spine box assembly 3, which is beneficial for simulating the coordinated forward tilting dynamic movement of the neck and spine during a collision, thereby improving the biosimulation of the safety test dummy 100 and the accuracy of the test data.

[0083] In some embodiments, the elastic deformable body 21 includes a main body 211 and an elastic transition portion 212. The two ends of the main body 211 are connected to the upper connecting body 22 and the lower connecting body 23, respectively. The elastic transition portion 212 is located on the front side of the main body 211, and the elastic modulus of the elastic transition portion 212 is smaller than that of the main body 211. That is, the elastic deformable body 21 can be connected to the upper connecting body 22 and the lower connecting body 23 through the main body 211, and the neck assembly 2 can move back and forth through the elastic transition portion 212.

[0084] like Figure 5 and Figure 6As shown, the upper end of the main body 211 is connected to the upper connector 22, and the lower end of the main body 211 is connected to the lower connector 23. The head 1 can be connected to the main body 211 through the upper connector 22, and the upper spine box assembly 31 can be connected to the main body 211 through the lower connector 23. The head 1 can move back and forth relative to the upper spine box assembly 31 through the neck assembly 2.

[0085] The elastic gradient part 212 is located on the front side of the main body 211, and the elastic modulus of the elastic gradient part 212 is smaller than that of the main body 211. This makes it easier for the front side of the main body 211 to undergo elastic deformation under the same force. That is, when the head 1 tilts forward under the action of inertia, the front side of the main body 211 has less resistance, which can more effectively simulate the movement state of the human body, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100.

[0086] Specifically, when a collision occurs, the head 1 can tilt forward under the action of inertia. At this time, the neck assembly 2 is subjected to the forward force transmitted by the head 1. The elastic gradient part 212 on the front side of the main body 211 is more likely to deform relative to the surrounding material, thereby causing the neck assembly 2 to bend toward the elastic gradient part 212 and drive the head 1 to move forward.

[0087] Therefore, the connection between the main body 211 and the upper connecting body 22 and the lower connecting body 23 enables the connection between the neck assembly 2, the head 1, and the upper spine box assembly 31. This allows the head 1 to move back and forth relative to the upper spine box assembly 31. Furthermore, the elastic gradient part 212 allows the front side of the main body 211 to have a smaller elastic modulus, thereby reducing the resistance on the front side of the neck assembly 2 and making it easier for the head 1 to move forward. In other words, the elastic gradient part 212 can guide the neck assembly 2 to bend forward, which is beneficial for simulating the movement state of the human body, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100. The deformation path of the neck assembly 2 can be controlled by the elastic gradient part 212, that is, the deformation path of the neck assembly 2 can be controlled by the elastic gradient part 212.

[0088] In some embodiments, the main body 211 has an annular mounting groove 2111 extending circumferentially, and the main body 211 has a forward-opening mounting notch 2112, which communicates with the portion of the annular mounting groove 2111 located at the front of the main body 211. The elastic gradient portion 212 is located within the mounting notch 2112. That is, the elastic gradient portion 212 can be mounted on the main body 211 through the annular mounting groove 2111, thereby facilitating the simulation of human movement states by the neck assembly 2.

[0089] Specifically, such as Figures 5-8As shown, the annular mounting groove 2111 extends circumferentially along the main body 211, and a forward-opening mounting notch 2112 is connected to the annular mounting groove 2111. The mounting notch 2112 is located on the front side of the main body 211, and the elastic gradient part 212 is disposed in the mounting notch 2112. The elastic gradient part 212 has a smaller elastic modulus. After the elastic gradient part 212 is installed in the mounting notch 2112, the front side of the main body 211 can have a smaller elastic modulus, that is, the front side of the main body 211 has less resistance, which is conducive to the forward deformation of the neck assembly 2.

[0090] When a collision occurs, the head 1 tilts forward due to inertia. At this time, the head 1 can drive the neck assembly 2 to move forward through the upper connecting body 22. That is, the head 1 applies a load to the neck assembly 2. The elastic gradient part 212 on the front side of the neck assembly 2 can produce greater elastic deformation under the load, which is conducive to the head 1 moving forward under inertia. This realizes the simulation of the human body's motion state when a collision occurs, thereby improving the biosimulation degree of the safety test dummy 100 and the accuracy of the test data.

[0091] Therefore, the annular mounting groove 2111, mounting notch 2112, and elastic gradient section 212 facilitate the forward bending of the head 1 and the neck assembly 2, making it easier for the head 1 to move forward. In other words, the elastic gradient section 212 guides the neck assembly 2 to bend forward, which helps simulate the movement of the human body, thereby improving the biosimulation of the safety test dummy 100 and the accuracy of the test data. Furthermore, the deformation path of the neck assembly 2 can be controlled by the elastic gradient section 212, meaning that the deformation path of the neck assembly 2 is controllable.

[0092] It should be noted that the elastic gradient part 212 can be embedded in the mounting notch 2112 and glued to the mounting notch 2112, thereby realizing the installation of the elastic gradient part 212 on the annular mounting groove 2111. That is, the elastic gradient part 212 is relatively fixed to the neck assembly 2 in the mounting notch 2112, so that the elastic gradient part 212 can guide the deformation path of the neck assembly 2 to more effectively simulate the motion state of the human body during a collision.

[0093] In some embodiments, there are multiple annular mounting slots 2111, and the multiple annular mounting slots 2111 are spaced apart along the length direction of the main body 211. Each annular mounting slot 2111 is provided with a mounting notch 2112 and an elastic gradient part 212. That is, the number of annular mounting slots 2111 can be set to two, three, or more, and the specific number can be flexibly selected. The multiple annular mounting slots 2111 spaced apart along the length direction of the main body 211 allows the head 1 to have a larger range of motion when moving back and forth. In addition, each of the multiple annular mounting slots 2111 can be provided with a mounting notch 2112 so that the elastic gradient part 212 can be installed in the mounting notch 2112, so that the multiple elastic gradient parts 212 can cooperate with each other to facilitate the simulation of the motion state of the neck assembly 2 during a human body collision.

[0094] like Figures 5-8 As shown, four annular mounting grooves 2111 can be provided, with the four annular mounting grooves 2111 spaced apart along the length of the main body 211. Four mounting notches 2112 are respectively provided on the four annular mounting grooves 2111. Four elastic gradient parts 212 can be provided, with each of the four elastic gradient parts 212 correspondingly positioned within the mounting notch 2112. That is, all four elastic gradient parts 212 can cooperate with the main body 211 within the mounting notch 2112, thereby guiding the neck assembly 2 to bend forward, facilitating the simulation of human movement and improving the biosimulation and test data accuracy of the safety test dummy 100. The deformation path of the neck assembly 2 can be controlled by the elastic gradient parts 212, meaning the deformation path of the neck assembly 2 can be made controllable through the elastic gradient parts 212.

[0095] Specifically, when the head 1 tilts forward, the upper end of the main body 211 can be moved forward by the upper connecting body 22. At this time, the front side of the main body 211 is subjected to a compressive load that reduces its volume. The elastic gradient part 212 located on the front side of the main body 211 has a smaller modulus, which allows the front side of the main body 211 to have a smaller elastic modulus. Under the action of the compressive load, it produces a larger volume deformation. That is, compared with other parts of the main body 211, the front side of the main body 211 produces a larger compressive deformation. This makes the resistance generated by the main body 211 to the forward tilting of the head 1 less, and the head 1 can move forward more easily. In other words, the elastic gradient part 212 can guide the neck assembly 2 to bend forward, which is conducive to simulating the movement state of the human body, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100. The deformation path of the neck assembly 2 can be controlled by the elastic gradient part 212, that is, the deformation path of the neck assembly 2 can be controlled by the elastic gradient part 212.

[0096] Furthermore, multiple elastic gradient sections 212 can cooperate with each other to allow the front side of the main body section 211 to generate greater elastic deformation under the action of compressive load, which can further improve the simulation effect of human body movement state.

[0097] Therefore, through the mutual cooperation of multiple annular mounting grooves 2111, multiple mounting notches 2112, and multiple elastic gradient parts 212, and with the multiple elastic gradient parts 212 disposed on the front side of the neck assembly 2, the forward bending of the neck assembly 2 can be facilitated, making it easier for the head 1 to move forward. That is, the elastic gradient parts 212 can guide the forward bending of the neck assembly 2, which is conducive to simulating the movement state of the human body, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100. Among them, the deformation path of the neck assembly 2 can be controlled by the elastic gradient parts 212, that is, the deformation path of the neck assembly 2 can be controlled by the elastic gradient parts 212.

[0098] In some embodiments, the mounting notches 2112 corresponding to the plurality of annular mounting grooves 2111 are distributed facing each other along the length direction of the main body 211. Specifically, as shown in Figures 5-8 As shown, multiple mounting notches 2112 are arranged facing each other along the length of the main body 211. Multiple elastic gradient parts 212 are arranged within the multiple mounting notches 2112 along the length of the main body 211. This allows the multiple elastic gradient parts 212 to cooperate with each other along the length of the main body 211. That is, when the head 1 drives the neck assembly 2 to bend, the multiple elastic gradient parts 212 can make the front side of the main body 211 have a smaller elastic modulus. The elastic gradient parts 212 on the front side of the main body 211 are more likely to deform relative to the surrounding material, so that the front side of the main body 211 has less resistance to the forward bending movement of the neck assembly 2, making it easier for the neck assembly 2 to bend forward. This is beneficial for simulating the motion state of the human body during a collision, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100.

[0099] And / or, in other embodiments, the depth of the corresponding mounting notches 2112 within the plurality of annular mounting grooves 2111 in the radial direction of the main body 211 is set to decrease sequentially from top to bottom, and the width of the plurality of elastic gradient portions 212 in the radial direction of the main body 211 is set to decrease sequentially from top to bottom. That is, the depth and width of the mounting notches 2112 and the elastic gradient portions 212 in the radial direction of the main body 211 decrease sequentially from top to bottom, thereby allowing the elastic modulus of the main body 211 to decrease sequentially from top to bottom, which in turn facilitates the bending of the neck assembly 2.

[0100] Specifically, such as Figure 6 and Figure 8As shown, four mounting notches 2112 are correspondingly provided in the four annular mounting grooves 2111, and the depth of the four mounting notches 2112 in the radial direction of the main body 211 is set to decrease from top to bottom. The shape of the four elastic gradient parts 212 is the same as the shape of the four mounting notches 2112, that is, the width of the four elastic gradient parts 212 in the radial direction of the main body 211 decreases from top to bottom, so that the elastic modulus of the main body 211 decreases from top to bottom, that is, the elastic deformation generated by the neck assembly 2 can decrease from top to bottom. At this time, the four elastic gradient parts 212 can cooperate with each other so that the neck assembly 2 can move along the neck assembly 2. The neck assembly 2 bends along a predetermined deformation path, allowing it to bend forward so that the head 1 can tilt forward. The tilt angle of the upper end of the neck assembly 2 can be greater than that of the lower end, which helps to simulate the movement of the human body, thereby improving the biosimulation of the safety test dummy 100 and the accuracy of the test data. It also makes the installation fit between the elastic gradient part 212 and the mounting notch 2112 more stable. In other words, it facilitates the elastic deformation of the elastic gradient part 212 when the load is transferred to the main body part 211, which helps to guide the forward bending of the neck assembly 2, so that the neck assembly 2 has a more controllable deformation path.

[0101] Therefore, by correspondingly arranging multiple elastic gradient parts 212 within the mounting notch 2112 along the length direction, the multiple elastic gradient parts 212 can cooperate with each other to make the front side of the neck assembly 2 have a smaller elastic modulus, which is beneficial for the head 1 to drive the neck assembly 2 forward, and is beneficial for simulating the movement state of the human body. Furthermore, the width and depth of the elastic gradient parts 212 and the mounting notch 2112 in the radial direction of the main body 211 are set to decrease from top to bottom, which can cause the neck assembly 2 to produce elastic deformation that decreases from top to bottom. In addition, the shape of the elastic gradient parts 212 can guide the movement path of the neck assembly 2, making the deformation path of the neck assembly 2 controllable, which is beneficial for simulating the movement state of the human body during a collision, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100.

[0102] In some embodiments, the annular mounting groove 2111 is provided with a through hole structure 24, and the mounting notch 2112 can be provided on the front side of the through hole structure 24, so that the elastic gradient portion 212 can be provided on the front side of the through hole structure 24. Specifically, such as Figure 6 and Figure 9 As shown, the main body 211 is provided with four annular mounting grooves 2111, and each annular mounting groove 2111 is provided with a corresponding through hole structure 24. That is, the main body 211 can be provided with four through hole structures 24. The through hole structure 24 can further reduce the elastic modulus of the front side of the neck assembly 2, making the front side of the neck assembly 2 more prone to elastic deformation. Thus, the through hole structure 24 can guide the deformation path of the neck assembly 2, so as to guide the neck assembly 2 to bend forward.

[0103] In other words, the through-hole structure 24 can further guide the deformation path of each elastic deformable body 21 more precisely. That is, when the head 1 tilts forward under the action of inertia, the through-hole structure 24 can facilitate the forward bending of the neck assembly 2, alleviate the irregular deformation caused by uneven stress, and thus enable the neck assembly 2 to drive the upper spine box 311 to move forward through the lower neck bracket 314, so that the coil spring 32 can generate elastic force.

[0104] During an actual collision, the through-hole structure 24 can cooperate with the elastic gradient section 212 to guide the neck assembly 2. That is, the through-hole structure 24 and the elastic gradient section 212 can guide the neck assembly 2 to bend forward. When the head 1 moves forward under the action of inertia, the head 1 can drive the neck assembly 2 to bend forward through the upper connecting body 22. At this time, the elastic gradient section 212 and the through-hole structure 24 on the front side of the neck assembly 2 bear the load that compresses it. The elastic gradient section 212 has a smaller elastic modulus than other parts of the neck assembly 2. The load acting on the elastic gradient section 212 can make it produce a larger elastic deformation than other parts. In other words, the volume of the elastic gradient section 212 can be compressed under the action of the load. At this time, all four elastic gradient sections 212 can be compressed into a smaller volume under the action of the load, thereby making the volume of the front side of the neck assembly 2 smaller, and thus realizing the forward bending of the neck assembly 2.

[0105] Furthermore, the through-hole structures 24 are correspondingly arranged with the elastic gradient parts 212. The four through-hole structures 24 can be arranged one-to-one with the four elastic gradient parts 212 on the same annular mounting groove 2111. The through-hole structures 24 can further reduce the elastic modulus of the front side of the neck assembly 2, meaning the through-hole structures 24 can cause a larger elastic deformation on the front side of the neck assembly 2 compared to other parts. The four through-hole structures 24 can collectively bend the neck assembly 2 forward. At this time, the four through-hole structures 24 and the four elastic gradient parts 212 cooperate to bend the neck assembly 2 forward along the deformation path, which is beneficial for simulating the movement state of the human body, thereby improving the biosimulation degree and test data accuracy of the safety test dummy 100. The deformation path of the neck assembly 2 can be controlled by the elastic gradient parts 212 and the through-hole structures 24, thus achieving controllable deformation path of the neck assembly 2.

[0106] Therefore, by setting the through hole structure 24, the deformation path of the neck assembly 2 can be guided more precisely, so that the neck assembly 2 can bend along the set deformation path, such as bending the neck assembly 2 forward along the deformation path, which is conducive to the simulation of the human body movement state by the neck assembly 2, which can improve the bionic ability of the safety test dummy 100 and enhance stability.

[0107] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0108] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A safety testing dummy, characterized in that, include: The head (1), neck assembly (2) and spine box assembly (3) are connected between the head (1) and the spine box assembly (3), and the neck assembly (2) includes an elastic deformable element (21) to enable the head (1) to move relative to the spine box assembly (3). The spine box assembly (3) includes an upper spine box assembly (31), an elastic element, and a lower spine box assembly (33). The upper spine box assembly (31) is connected to the neck assembly (2), and the lower spine box assembly (33) is connected to the buttocks (4). The upper spine box assembly (31) is rotatably connected to the lower spine box assembly (33) to rotate back and forth relative to the lower spine box assembly (33). The elastic element is connected between the upper spine box assembly (31) and the lower spine box assembly (33). The elastic element is used to apply an elastic force to the upper spine box assembly (31) to keep it vertically above the lower spine box assembly (33). When subjected to inertia, the upper spine box assembly (31) overcomes the elastic force of the elastic element and rotates forward relative to the lower spine box assembly (33).

2. The safety test dummy according to claim 1, characterized in that, The neck assembly (2) further includes an upper connector (22) and a lower connector (23), the upper connector (22) being connected to the head (1), the lower connector (23) being connected to the upper spine box assembly (31), and the elastic deformable body (21) being connected between the upper connector (22) and the lower connector (23).

3. The safety testing dummy according to claim 2, characterized in that, The lower part of the upper spinal box assembly (31) is rotatably connected to the upper part of the lower spinal box assembly (33), and the elastic element is constructed as a coil spring (32). One end of the coil spring (32) is fixed relative to the upper spinal box assembly (31), and the other end of the coil spring (32) is fixed relative to the lower spinal box assembly (33).

4. The safety testing dummy according to claim 3, characterized in that, It also includes a coil spring seat (34), which includes a connecting part (341) and a mounting shaft part (342) connected together. The connecting part (341) is fixed relative to one of the upper spine box assembly (31) and the lower spine box assembly (33). The coil spring (32) is sleeved on the mounting shaft part (342). The inner end (321) of the coil spring (32) is fixed relative to the mounting shaft part (342), and the outer end (322) is fixed relative to the other of the upper spine box assembly (31) and the lower spine box assembly (33).

5. The safety test dummy according to claim 4, characterized in that, The upper spine box assembly (31) includes an upper spine box (311) and an upper support member (312). The upper spine box (311) is used to connect to the neck assembly (2). The upper support member (312) is connected below the upper spine box (311). The upper support member (312) is fixed relative to the coil spring (32). The lower spine box assembly (33) includes a lower spine box (331) and a lower support member (332). The lower spine box (331) is used to connect to the buttock (4). The lower support member (332) is connected above the lower spine box (331). The lower support member (332) is fixed relative to the connecting part (341).

6. The safety testing dummy according to claim 5, characterized in that, The upper support member (312) has a receiving cavity, and through holes (313) are formed at both axial ends of the receiving cavity. The mounting shaft (342) passes through the through holes (313) to penetrate the upper support member (312). The coil spring (32) is located in the receiving cavity and its outer end (322) is connected to the interior of the receiving cavity. The upper spine box assembly (31) also includes a lower neck support (314), which is connected above the upper spine box (311), and the upper spine box (311) is connected to the neck assembly (2) via the lower neck support (314).

7. The safety test dummy according to claim 2, characterized in that, The elastic deformable body (21) includes a main body (211) and an elastic gradient part (212). The two ends of the main body (211) are connected to the upper connecting body (22) and the lower connecting body (23) respectively. The elastic gradient part (212) is located on the front side of the main body (211), and the elastic modulus of the elastic gradient part (212) is smaller than the elastic modulus of the main body (211).

8. The safety test dummy according to claim 7, characterized in that, The main body (211) has an annular mounting groove (2111) extending circumferentially, and the main body (211) has a forward-opening mounting notch (2112), the mounting notch (2112) communicating with the portion of the annular mounting groove (2111) located on the front side of the main body (211), and the elastic gradient portion (212) is located within the mounting notch (2112).

9. The safety test dummy according to claim 8, characterized in that, There are multiple annular mounting grooves (2111), and the multiple annular mounting grooves (2111) are spaced apart along the length direction of the main body (211). Each annular mounting groove (2111) is provided with the mounting notch (2112) and the elastic gradient part (212).

10. The safety testing dummy according to claim 8, characterized in that, The mounting notches (2112) corresponding to the plurality of annular mounting grooves (2111) are distributed facing each other along the length direction of the main body (211); The depth of the mounting notches (2112) corresponding to the plurality of annular mounting grooves (2111) in the radial direction of the main body (211) is set to decrease sequentially from top to bottom, and the width of the plurality of elastic gradient portions (212) in the radial direction of the main body (211) is set to decrease sequentially from top to bottom.

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