Neck assembly of safety test dummy and safety test dummy

Abstract

The utility model discloses a safety test dummy neck assembly and a safety test dummy, and relates to the technical field of automobile crash safety test, the neck assembly is connected between the head and the upper trunk of the safety test dummy, the neck assembly comprises an upper connecting body, an elastic deformation body and a lower connecting body, the upper connecting body is connected with the head, the elastic deformation body is connected with the lower connecting body, and the elastic deformation body is connected with the lower connecting body. The lower connecting body is connected with the upper trunk, and the elastic deformation body is connected between the upper connecting body and the lower connecting body; wherein the elastic deformation body comprises a main body part and an elastic gradual change part, the two ends of the main body part are connected with the upper connecting body and the lower connecting body respectively, the elastic gradual change part is located on the front side of the main body part, and the elastic modulus of the elastic gradual change part is smaller than that of the main body part. According to the neck assembly of the safety test dummy, the elastic gradual change part is arranged, so that the safety test dummy simulates the motion state of a human body when the human body is collided, and the biological simulation degree and the test data precision of the safety test dummy are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile crash safety test technology, especially to a neck assembly of safety test dummy and safety test dummy. BACKGROUND

[0002] Safety test dummy is the key equipment of automobile crash test, through the collection of sensor data of safety test dummy in the crash process, the harm condition of dummy can be evaluated, and then the injury condition of human body in actual crash process can be represented. In the related technology, the traditional dummy cannot simulate the forward tilting dynamic movement of human neck in the crash process, and there is room for improvement. SUMMARY

[0003] The utility model aims at solving one of the technical problems in the prior art. Therefore, the utility model provides a neck assembly of safety test dummy, which can simulate the movement state of human spine in the crash.

[0004] The neck assembly of safety test dummy according to the utility model embodiment is connected between the head and the upper torso of the safety test dummy, and comprises an upper connecting body, an elastic deformation body and a lower connecting body, the upper connecting body is connected with the head, the lower connecting body is connected with the upper torso, and the elastic deformation body is connected between the upper connecting body and the lower connecting body; wherein the elastic deformation body comprises a main body part and an elastic gradient part, the two ends of the main body part are connected with the upper connecting body and the lower connecting body respectively, the elastic gradient part is located on the front side of the main body part, and the elastic modulus of the elastic gradient part is less than that of the main body part.

[0005] The neck assembly of safety test dummy according to the utility model embodiment realizes the simulation of the movement state of human body when being subjected to the crash by setting the elastic gradient part, so as to improve the biological simulation degree and test data accuracy of the safety test dummy.

[0006] The neck assembly of safety test dummy according to some embodiments of the utility model, the main body part is formed with a front-opening installation gap, and the elastic gradient part is located in the installation gap.

[0007] The neck assembly of safety test dummy according to some embodiments of the utility model, the main body part is formed with a circumferentially-extending annular installation groove, the installation gap is communicated with the part of the annular installation groove located on the front side of the main body part, and the front surface of the elastic gradient part and the inner circumferential surface of the annular installation groove are distributed in a common circle.

[0008] According to the neck assembly of the safety test dummy, the depth of the part of the annular mounting groove located at the front side of the main body part in the radial direction of the main body part is less than the depth of the part of the annular mounting groove located at the rear side of the main body part in the radial direction of the main body part.

[0009] The depth of the annular mounting groove in the radial direction of the main body part is gradually increased from front to back along the circumferential direction of the annular mounting groove.

[0010] According to the neck assembly of the safety test dummy, the vertical width of the part of the annular mounting groove located at the front side of the main body part is gradually reduced from front to back, and the vertical thickness of the elastic gradual change part is gradually reduced from front to back so that the upper surface and the lower surface of the elastic gradual change part are respectively attached to the inner wall of the annular mounting groove.

[0011] According to the neck assembly of the safety test dummy, the annular mounting groove is multiple, and the multiple annular mounting grooves are distributed in the length direction of the main body part and are spaced apart, and the mounting notch and the elastic gradual change part are correspondingly arranged in each annular mounting groove.

[0012] According to the neck assembly of the safety test dummy, the corresponding mounting notches in the multiple annular mounting grooves are distributed in the length direction of the main body part.

[0013] According to the neck assembly of the safety test dummy, the depths of the corresponding mounting notches in the multiple annular mounting grooves in the radial direction of the main body part are sequentially reduced from top to bottom.

[0014] The widths of the multiple elastic gradual change parts in the radial direction of the main body part are sequentially reduced from top to bottom.

[0015] According to the neck assembly of the safety test dummy, the rear end of the elastic gradual change part is formed with a deformation notch, the elastic gradual change part is spaced apart from the rear wall of the mounting notch at the deformation notch to jointly form a deformation through hole, and the deformation through hole penetrates in the left-right direction of the main body part.

[0016] The utility model also proposes a safety test dummy.

[0017] According to the safety test dummy, the neck assembly of the safety test dummy is provided.

[0018] The safety test dummy and the neck assembly of the safety test dummy have the same advantages as the prior art, and details are not repeated here.

[0019] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description of embodiments of the present application, taken in conjunction with the accompanying drawings.

[0021] Figure 1 is a structure diagram of a neck assembly of a safety test dummy of an embodiment of the present application Figure One ;

[0022] Figure 2 is a structure diagram of a neck assembly of a safety test dummy of an embodiment of the present application Figure Two ;

[0023] Figure 3 is a structure diagram of a neck assembly of a safety test dummy of an embodiment of the present application Figure One ;

[0024] Figure 4 is a structure diagram of a neck assembly of a safety test dummy of an embodiment of the present application Figure Two ;

[0025] Figure 5 is a structure diagram of a neck assembly of a safety test dummy of an embodiment of the present application Figure Three ;

[0026] Figure 6 is a cross-sectional view of A-A in Figure 5 ;

[0027] Figure 7 is a cross-sectional view of B-B in Figure 5 .

[0028] REFERENCE NUMERALS

[0029] a safety test dummy 1000,

[0030] a neck assembly 100 of the safety test dummy,

[0031] an upper connecting body 1,

[0032] an elastic deformation body 2, a main body portion 21, a mounting notch 211, an annular mounting groove 212, an elastic gradual change portion 22, a deformation notch 23, a deformation through hole 24,

[0033] a lower connecting body 3,

[0034] a head 200, an upper torso 300. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and are not to be understood as limiting the present application.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the features limited as "first" and "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0037] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] The following refers to Figures 1-7 The neck assembly 100 of the safety test dummy according to the embodiments of the present application can simulate the motion state of the human spine during collision.

[0039] As shown in Figure 1 and Figure 2 The neck assembly 100 of the safety test dummy according to the embodiments of the present application is connected between the head 200 and the upper torso 300 of the safety test dummy 1000, and the neck assembly 100 comprises: an upper connecting body 1, an elastic deformation body 2 and a lower connecting body 3.

[0040] The upper connecting body 1 is connected with the head 200, the lower connecting body 3 is connected with the upper torso 300, and the elastically deformable body 2 is connected between the upper connecting body 1 and the lower connecting body 3. That is, the neck assembly 100 is connected with the head 200 and the upper torso 300 through the upper connecting body 1 and the lower connecting body 3, and the elastically deformable body 2 is arranged between the upper connecting body 1 and the lower connecting body 3 to enable the neck assembly to elastically deform.

[0041] As shown in Figure 3 and Figure 4 , the upper connecting body 1 and the lower connecting body 3 are connected through the elastically deformable body 2, and the upper connecting body 1 is connected with the head 200 and the lower connecting body 3 is connected with the upper torso 300. When the head 200 is inclined forward, the elastically deformable body 2 can be elastically deformed by the upper connecting body 1, so that the neck assembly 100 can move relative to the upper torso 300. For example, the elastically deformable body 2 can make the volume of one side of the neck assembly 100 smaller, and at this time the head 200 connected with the neck assembly 100 can move forward, or the elastically deformable body 2 can make the volume of one side of the neck assembly 100 smaller, and at this time the head 200 connected with the neck assembly 100 can move backward.

[0042] Specifically, when a collision occurs, the head 200 is inclined forward under the action of inertia, and the neck assembly 100 is elastically deformed under the action of the head 200, so that the head 200 is inclined forward relative to the upper torso 300, and the head 200 can exert a force on the upper torso 300 through the neck assembly 100, thereby driving the upper torso 300 to move forward, and the upper torso 300 returning to the original position can drive the head 200 to return to the original position through the neck assembly 100.

[0043] Therefore, the neck assembly 100 can connect the head 200 and the upper torso 300 through the upper connecting body 1 and the lower connecting body 3, and the elastically deformable body 2 can enable the head 200 to move relative to the upper torso 300. For example, when a vehicle collides, the head 200 moves forward and backward relative to the upper torso 300 through the elastic deformation of the elastically deformable body 2, or when the vehicle is subjected to a force in other directions, such as a side collision, the head 200 moves laterally relative to the upper torso 300 through the elastic deformation of the elastically deformable body 2, which is beneficial to simulate the forward dynamic movement of the neck of the human body during the collision process, thereby improving the biological simulation of the safety test dummy 1000 and the accuracy of the test data.

[0044] The elastic deformation body 2 comprises a main body 21 and an elastic gradient portion 22, two ends of the main body 21 are connected with the upper connecting body 1 and the lower connecting body 3 respectively, the elastic gradient portion 22 is located at the front side of the main body 21, and the elastic modulus of the elastic gradient portion 22 is smaller than that of the main body 21. That is, the elastic deformation body 2 can realize the connection with the upper connecting body 1 and the lower connecting body 3 through the main body 21, and can realize the front and back movement of the neck assembly 100 through the elastic gradient portion 22.

[0045] As shown in the figure, the upper end of the main body 21 is connected with the upper connecting body 1, the lower end of the main body 21 is connected with the lower connecting body 3, the head 200 can be connected with the main body 21 through the upper connecting body 1, the upper torso 300 can be connected with the main body 21 through the lower connecting body 3, and the head 200 can move forward and backward relative to the upper torso 300 through the neck assembly 100. Figures 1-4

[0046] The elastic gradient portion 22 is arranged at the front side of the main body 21 and has an elastic modulus smaller than that of the main body 21, so that the front side of the main body 21 is more likely to be elastically deformed under the same stress, that is, when the head 200 tilts forward under the action of inertia, the front side of the main body 21 has smaller resistance, which can more effectively simulate the motion state of the human body, thereby improving the biological simulation degree and test data accuracy of the safety test dummy 1000.

[0047] Specifically, when the collision occurs, the head 200 can tilt forward under the action of inertia, at this time, the neck assembly 100 is subjected to the forward force transmitted by the head 200, and the elastic gradient portion 22 at the front side of the main body 21 is more likely to be deformed relative to the surrounding material, so that the neck assembly 100 bends towards the elastic gradient portion 22, and drives the head 200 to move forward.

[0048] Therefore, the connection of the neck assembly 100 with the head 200 and the upper torso 300 can be realized through the connection of the main body 21 with the upper connecting body 1 and the lower connecting body 3, and the front side of the main body 21 has smaller elastic modulus due to the elastic gradient portion 22, so that the resistance of the front side of the neck assembly 100 is smaller, and the head 200 is more likely to move forward, that is, the elastic gradient portion 22 can guide the neck assembly 100 to bend forward, which is beneficial to simulate the motion state of the human body, thereby improving the biological simulation degree and test data accuracy of the safety test dummy 1000. The deformation path of the neck assembly 100 can be controlled through the elastic gradient portion 22, that is, the deformation path of the neck assembly 100 is controllable through the elastic gradient portion 22.

[0049] ​According to the neck assembly 100 of the safety test dummy, the elastic gradient part 22 is arranged, the safety test dummy 1000 can simulate the motion state of the human body when the human body is subjected to the collision, and the biological simulation degree and the test data accuracy of the safety test dummy 1000 are improved.

[0050] In some embodiments, the main body part 21 is formed with a mounting gap 211 open to the front, and the elastic gradient part 22 is located in the mounting gap 211. That is, the elastic gradient part 22 can be fixed to the main body part 21 through the mounting gap 211.

[0051] Specifically, as shown in the figure, Figures 3-7 The main body part 21 is provided with a mounting gap 211 open to the front, and the elastic gradient part 22 is installed in the mounting gap 211, and the elastic gradient part 22 has a smaller elastic modulus, so that the main body part 21 has a smaller elastic modulus, that is, the main body part 21 has smaller resistance, which is beneficial to the deformation of the neck assembly 100.

[0052] When the collision occurs, the head 200 tilts forward under the action of inertia, at this time, the head 200 can drive the neck assembly 100 to move forward through the upper connecting body 1, that is, the head 200 applies a load to the neck assembly 100, and the elastic gradient part 22 of the neck assembly 100 can produce greater elastic deformation under the action of the load, thereby facilitating the forward movement of the head 200 under the action of inertia, and realizing the simulation of the motion state of the human body when the collision occurs, thereby improving the biological simulation degree and the test data accuracy of the safety test dummy 1000.

[0053] Therefore, through the elastic gradient part 22 installed in the mounting gap 211, the head 200 can drive the neck assembly 100 to bend, and the head 200 is more easily moved, that is, the elastic gradient part 22 can guide the neck assembly 100 to bend, which is beneficial to simulate the motion state of the human body, thereby improving the biological simulation degree and the test data accuracy of the safety test dummy 1000. The deformation path of the neck assembly 100 can be controlled through the elastic gradient part 22, that is, the deformation path of the neck assembly 100 can be controlled through the elastic gradient part 22.

[0054] It should be noted that the elastic gradient part 22 can be embedded in the mounting gap 211 and adhesively connected with the mounting gap 211, so as to realize the installation of the elastic gradient part 22 on the main body part 21, that is, the relative fixation of the elastic gradient part 22 in the mounting gap 211 with the neck assembly 100, so that the elastic gradient part 22 can guide the deformation path of the neck assembly 100, so as to more effectively simulate the motion state of the human body when the human body is subjected to the collision.

[0055] In some embodiments, the main body 21 is formed with an annular mounting groove 212 extending in the circumferential direction, the mounting notch 211 is communicated with a portion of the annular mounting groove 212 located at the front side of the main body 21, and the front surface of the elastic gradient portion 22 is co-circularly distributed with the inner circumferential surface of the annular mounting groove 212. That is, the elastic gradient portion 22 can be mounted to the front side of the main body 21 through the mounting notch 211 to reduce the elastic modulus of the front side of the main body 21.

[0056] Specifically, as shown in Figures 3-5 the mounting notch 211 is communicated with the front side of the main body 21, and the elastic gradient portion 22 is mounted in the mounting notch 211, so that the elastic gradient portion 22 is mounted to the front side of the main body 21, the elastic modulus of the front side of the main body 21 can be reduced, and the forward bending of the neck assembly 100 is facilitated.

[0057] When the head 200 tilts forward under the action of inertia as a collision occurs, at this time, the head 200 can drive the neck assembly 100 to move forward through the upper connecting body 1, that is, the head 200 applies a load to the neck assembly 100, and the elastic gradient portion 22 on the front side of the neck assembly 100 can produce greater elastic deformation under the action of the load, thereby facilitating the forward movement of the head 200 under the action of inertia, achieving the simulation of the motion state of the human body when the collision occurs, thereby improving the biological simulation degree and test data accuracy of the safety test dummy 1000.

[0058] Therefore, through the mounting notch 211 and the elastic gradient portion 22 located at the front side of the main body 21, the head 200 can facilitate the forward bending of the neck assembly 100, and the head 200 is more easily moved forward, that is, the elastic gradient portion 22 can guide the forward bending of the neck assembly 100, which facilitates the simulation of the motion state of the human body, thereby improving the biological simulation degree and test data accuracy of the safety test dummy 1000. The deformation path of the neck assembly 100 can be controlled through the elastic gradient portion 22, that is, the deformation path of the neck assembly 100 can be controlled through the elastic gradient portion 22.

[0059] In some embodiments, the depth of the portion of the annular mounting groove 212 located at the front side of the main body 21 in the radial direction of the main body 21 is less than the depth of the portion of the annular mounting groove 212 located at the rear side of the main body 21 in the radial direction of the main body 21.

[0060] Specifically, as shown in Figure 7 the radial depth of the annular mounting groove 212 at the front side of the main body 21 is less than the radial depth at the rear side of the main body 21, so that the elastic modulus of the front side of the main body 21 can be less than the elastic modulus of the rear side of the main body 21, and the main body 21 can be more easily bent forward.

[0061] When the head 200 tilts forward under the action of inertia as the collision occurs, the head 200 can drive the neck assembly 100 to move forward, i.e., the head 200 applies a load to the neck assembly 100, and the elastic gradually changing portion 22 on the front side of the neck assembly 100 can generate greater elastic deformation under the action of the load, thereby facilitating the forward movement of the head 200 under the action of inertia, achieving simulation of the human motion state when the collision occurs, and improving the biological simulation degree and test data accuracy of the safety test dummy 1000.

[0062] The depth of the annular mounting groove 212 in the radial direction of the main body portion 21 is gradually increased from front to back along the circumferential direction of the annular mounting groove 212. Specifically, as shown in Figure 7 the depth of the annular mounting groove 212 in the radial direction of the main body portion 21 is gradually increased from front to back along the circumferential direction of the annular mounting groove 212, so that the elastic modulus of the main body portion 21 in the circumferential direction gradually changes, thereby facilitating the guidance of the bending direction of the neck assembly 100.

[0063] In addition, the depth of the portion of the annular mounting groove 212 located on the rear side of the main body portion 21 in the radial direction of the main body portion 21 is set to be relatively large, so that the portion on the rear side of the main body portion 21 is more likely to elastically deform when the neck assembly 100 bends forward, thereby facilitating the forward bending of the neck assembly 100 and further facilitating the simulation of the human motion state by the neck assembly 100.

[0064] In some embodiments, the vertical width of the portion of the annular mounting groove 212 located on the front side of the main body portion 21 is gradually reduced from front to back, and the vertical thickness of the elastic gradually changing portion 22 is gradually reduced from front to back so that the upper surface and the lower surface of the elastic gradually changing portion 22 respectively fit the inner wall of the annular mounting groove 212.

[0065] Specifically, as shown in Figure 3 the vertical width of the annular mounting groove 212 and the elastic gradually changing portion 22 is gradually reduced from front to back, so that the upper surface and the lower surface of the elastic gradually changing portion 22 can respectively fit the inner wall of the annular mounting groove 212, thereby achieving the installation of the elastic gradually changing portion 22 on the main body portion 21.

[0066] In this way, the elastic gradually changing portion 22 can guide the main body portion 21 to bend forward, facilitate the simulation of the human motion state, and improve the biological simulation degree and test data accuracy of the safety test dummy 1000.

[0067] In some embodiments, the plurality of annular mounting grooves 212 are spaced apart along the length direction of the main body portion 21, and each of the annular mounting grooves 212 is provided with the mounting gap 211 and the elastic gradient portion 22. That is, the number of the annular mounting grooves 212 can be two, three, or more, and the number is selected flexibly. The plurality of annular mounting grooves 212 are spaced apart along the length direction of the main body portion 21, which can provide a larger movement stroke of the head portion 200 when moving forward and backward. In addition, the mounting gap 211 can be provided in each of the plurality of annular mounting grooves 212, so that the elastic gradient portion 22 can be mounted in the mounting gap 211. Thus, the plurality of elastic gradient portions 22 can cooperate with each other to facilitate the simulation of the motion state of the human body when the neck assembly 100 collides with the human body.

[0068] As shown in FIG. 1, the annular mounting grooves 212 can be four, which are spaced apart along the length direction of the main body portion 21. The four mounting gaps 211 are respectively provided on the four annular mounting grooves 212. The elastic gradient portion 22 can be four, which are respectively provided in the mounting gaps 211. That is, the four elastic gradient portions 22 can be cooperated with the main body portion 21 in the mounting gaps 211. Thus, the elastic gradient portion 22 can guide the neck assembly 100 to bend forward, which facilitates the simulation of the motion state of the human body, thereby improving the biological simulation degree and the test data accuracy of the safety test dummy 1000. In addition, the deformation path of the neck assembly 100 can be controlled by the elastic gradient portion 22, that is, the deformation path of the neck assembly 100 can be controlled by the elastic gradient portion 22. Figures 3-5 Specifically, when the head portion 200 is inclined forward, the upper connecting body 1 can drive the upper end of the main body portion 21 to move forward. At this time, the front side of the main body portion 21 is subjected to a compression load to reduce the volume. The elastic gradient portion 22 provided on the front side of the main body portion 21 has a smaller elastic modulus, so that the front side of the main body portion 21 has a smaller elastic modulus, and a larger volume deformation is generated under the action of the compression load, that is, the front side of the main body portion 21 has a larger compression deformation compared with other parts of the main body portion 21. Thus, the main body portion 21 can generate a smaller resistance to the forward inclination of the head portion 200, and the head portion 200 is more easily moved forward. That is, the elastic gradient portion 22 can guide the neck assembly 100 to bend forward, which facilitates the simulation of the motion state of the human body, thereby improving the biological simulation degree and the test data accuracy of the safety test dummy 1000. In addition, the deformation path of the neck assembly 100 can be controlled by the elastic gradient portion 22, that is, the deformation path of the neck assembly 100 can be controlled by the elastic gradient portion 22.

[0069]

[0070] ​Furthermore, multiple elastic gradient sections 22 can cooperate with each other to allow the front side of the main body 21 to generate greater elastic deformation under the action of compressive load, which can further improve the simulation effect of human body movement.

[0071] Therefore, through the mutual cooperation of multiple annular mounting grooves 212, multiple mounting notches 211, and multiple elastic gradient parts 22, and with the multiple elastic gradient parts 22 disposed on the front side of the neck assembly 100, the forward bending of the neck assembly 100 is facilitated, making it easier for the head 200 to move forward. That is, the elastic gradient parts 22 can guide the forward bending of the neck assembly 100, 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 1000. Among them, the deformation path of the neck assembly 100 can be controlled by the elastic gradient parts 22, that is, the deformation path of the neck assembly 100 can be controlled by the elastic gradient parts 22.

[0072] In some embodiments, the mounting notches 211 corresponding to the plurality of annular mounting grooves 212 are distributed facing each other along the length direction of the main body 21.

[0073] Specifically, such as Figures 3-6 As shown, multiple mounting notches 211 are arranged facing each other along the length direction of the main body 21, so that multiple elastic gradient parts 22 can be arranged in the multiple mounting notches 211 along the length direction of the main body 21, thereby allowing the multiple elastic gradient parts 22 to cooperate with each other along the length direction of the main body 21.

[0074] When the head 200 drives the neck assembly 100 to bend, the multiple elastic gradient parts 22 can make the front side of the main body 21 have a smaller elastic modulus. The elastic gradient parts 22 on the front side of the main body 21 are more likely to deform relative to the surrounding material, so that the front side of the main body 21 has less resistance to the forward bending movement of the neck assembly 100, making the neck assembly easier to bend forward. This is conducive to simulating the motion state of the human body during a collision, thereby improving the biosimulation degree of the safety test dummy 1000 and the accuracy of the test data.

[0075] In some embodiments, the depth of the corresponding mounting notches 211 within the plurality of annular mounting grooves 212 in the radial direction of the main body 21 is set to decrease sequentially from top to bottom; wherein, the width of the plurality of elastic gradient portions 22 in the radial direction of the main body 21 is set to gradually decrease from the inside to the outside. That is, the shapes of the mounting notches 211 and the elastic gradient portions 22 both decrease sequentially from top to bottom in the radial direction of the main body 21, so that the mounting notches 211 and the elastic gradient portions 22 can cooperate with each other so that the elastic gradient portions 22 can be disposed within the annular mounting grooves 212, and the elastic deformation of the neck assembly 100 decreases sequentially from top to bottom, thereby facilitating the bending of the neck assembly 100 and the forward tilting of the head 200, which is beneficial for simulating the movement state of the human body.

[0076] Specifically, as shown in Figure 4 and Figure 6 four mounting notches 211 are correspondingly arranged in the four annular mounting grooves 212, and the depths of the four mounting notches 211 decrease in sequence from top to bottom along the radial direction of the annular mounting grooves 212. The four elastic gradient portions 22 have the same shape as the four mounting notches 211, that is, the widths of the four elastic gradient portions 22 decrease in sequence from top to bottom along the radial direction, so that the elastic gradient portions 22 can be mounted in the mounting notches 211, that is, the elastic gradient portions 22 are mounted on the main body portion 21, and the elastic gradient portions 22 decreasing in sequence from top to bottom can make the elastic modulus of the main body portion 21 decrease in sequence from top to bottom, so that the upper end of the neck assembly 100 can produce greater elastic deformation compared with the lower end, which is beneficial to simulate the motion state of the human body. At this time, the four elastic gradient portions 22 can cooperate with each other to make the neck assembly 100 bend along the set deformation path, that is, the neck assembly 100 can realize forward bending to make the head 200 incline forward, and the head 200 is more prone to forward movement, that is, the elastic gradient portions 22 can guide the neck assembly 100 to bend forward, thereby improving the biological simulation degree and test data accuracy of the safety test dummy 1000, and the mounting cooperation between the elastic gradient portions 22 and the mounting notches 211 is more stable. In other words, it is beneficial to the elastic deformation of the elastic gradient portions 22 when the load is transmitted to the main body portion 21, that is, it is beneficial to guide the forward bending of the neck assembly 100, so that the neck assembly 100 has a more controllable deformation path.

[0077] Therefore, by correspondingly arranging the plurality of elastic gradient portions 22 in the mounting notches 211 along the length direction, the plurality of elastic gradient portions 22 can cooperate with each other to make the front side of the neck assembly 100 have a smaller elastic modulus, thereby facilitating the head 200 to drive the neck assembly 100 to move forward, facilitating the simulation of the motion state of the human body, and the widths and depths of the elastic gradient portions 22 and the mounting notches 211 decrease in sequence from top to bottom along the radial direction, which can make the elastic modulus of the main body portion 21 decrease in sequence from top to bottom, so that the upper end of the neck assembly 100 can produce greater elastic deformation compared with the lower end, and the shape of the elastic gradient portions 22 can guide the motion path of the neck assembly 100, so that the deformation path of the neck assembly 100 is controllable, which is beneficial to simulate the motion state of the human body when colliding, thereby improving the biological simulation degree and test data accuracy of the safety test dummy 1000.

[0078] In some embodiments, the rear end of the elastic gradient portion 22 is formed with a deformation notch 23, the elastic gradient portion 22 is spaced apart from the rear wall surface of the mounting notch 211 at the deformation notch 23 to jointly form a deformation through hole 24 which penetrates through the left-right direction of the main body portion 21.

[0079] Specifically, as shown in Figure 3 and Figure 4As shown, the deformation notch 23 of the elastic gradual change portion 22 and the rear wall surface of the mounting gap 211 form a deformation through hole 24, the deformation through hole 24 penetrates along the left-right direction of the main body portion 21, and the main body portion 21 is provided with four annular mounting grooves 212, and each annular mounting groove 212 is provided with a corresponding deformation through hole 24, that is, the main body portion 21 can be provided with four deformation through holes 24, and the deformation through hole 24 can further reduce the elastic modulus of the front side of the neck assembly 100, that is, the front side of the neck assembly 100 is more easily deformed elastically, so that the deformation through hole 24 can guide the deformation path of the neck assembly 100 to guide the neck assembly 100 to bend forward.

[0080] In other words, the deformation through hole 24 can further accurately guide the deformation path of the elastic deformation body 2, that is, when the head 200 tilts forward under the action of inertia, the deformation through hole 24 can facilitate the forward bending of the neck assembly 100, relieve irregular deformation caused by uneven stress, and further enable the neck assembly 100 to drive the upper torso 300 to move forward.

[0081] In actual collision process, the deformation through hole 24 can cooperate with the elastic gradual change portion 22 to guide the neck assembly 100, that is, the deformation through hole 24 can guide the neck assembly 100 to bend forward together with the elastic gradual change portion 22. When the head 200 moves forward under the action of inertia, the head 200 can drive the neck assembly 100 to produce forward bending deformation through the upper connecting body 1, at this time, the elastic gradual change portion 22 and the deformation through hole 24 on the front side of the neck assembly 100 bear the load that compresses them, the elastic gradual change portion 22 has a smaller elastic modulus than other parts of the neck assembly 100, and the load acting on the elastic gradual change portion 22 can make it produce greater elastic deformation than other parts, in other words, the volume of the elastic gradual change portion 22 under the action of the load can be compressed, at this time, the four elastic gradual change portions 22 can be compressed to a smaller volume under the action of the load, so that the volume of the front side of the neck assembly 100 is smaller, and the forward bending of the neck assembly 100 is realized.

[0082] And, the deformation through hole 24 is arranged corresponding to the elastic gradual change part 22, four deformation through holes 24 can be arranged corresponding to four elastic gradual change parts 22 on the same annular mounting groove 212, the deformation through hole 24 can further reduce the elastic modulus of the front side of the neck assembly 100, that is, the deformation through hole 24 can make the front side of the neck assembly 100 produce greater elastic deformation compared with other parts, and four deformation through holes 24 can collectively make the neck assembly 100 bend forward. At this time, four deformation through holes 24 and four elastic gradual change parts 22 cooperate to collectively make the neck assembly 100 bend forward along the deformation path, which is beneficial to simulate the motion state of the human body, thereby improving the biological simulation degree and test data accuracy of the safety test dummy 1000. Wherein, the deformation path of the neck assembly 100 can be controlled by the elastic gradual change part 22 and the deformation through hole 24, that is, the deformation path of the neck assembly 100 can be realized by the elastic gradual change part 22 and the deformation through hole 24.

[0083] Therefore, by arranging the deformation through hole 24, the deformation path of the neck assembly 100 can be more accurately guided, so that the neck assembly 100 can bend along the set deformation path, such as bending forward along the deformation path, thereby facilitating the simulation of the motion state of the human body by the neck assembly 100, and improving the bionic ability and stability of the safety test dummy 1000.

[0084] The utility model also provides a safety test dummy 1000.

[0085] According to the safety test dummy 1000 of the utility model embodiment, the neck assembly 100 of the safety test dummy of any one of the above embodiments is arranged. Wherein, by arranging the elastic gradual change part 22, the safety test dummy 1000 realizes the simulation of the motion state of the human body when being impacted, thereby improving the biological simulation degree and test data accuracy of the safety test dummy 1000.

[0086] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0087] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A neck assembly for a security test dummy, characterized by The neck assembly is connected between the head (200) and the upper torso (300) of the safety test dummy, and the neck assembly comprises: an upper connecting body (1), an elastically deformable body (2), and a lower connecting body (3), the upper connecting body (1) being connected to the head (200), the lower connecting body (3) being connected to the upper torso (300), and the elastically deformable body (2) being connected between the upper connecting body (1) and the lower connecting body (3); wherein the elastically deformable body (2) comprises a main body portion (21) and an elastically gradient portion (22), both ends of the main body portion (21) being connected to the upper connecting body (1) and the lower connecting body (3) respectively, and the elastically gradient portion (22) being located at the front side of the main body portion (21) and having an elastic modulus smaller than that of the main body portion (21).

2. The neck assembly of the mannequin according to claim 1, wherein, The main body portion (21) is formed with a mounting gap (211) open towards the front, and the elastically gradient portion (22) is located in the mounting gap (211).

3. The neck assembly of the mannequin according to claim 2, wherein, The main body portion (21) is formed with an annular mounting groove (212) extending in the circumferential direction, the mounting gap (211) being communicated with the part of the annular mounting groove (212) located at the front side of the main body portion (21), and the front surface of the elastically gradient portion (22) being co-circularly distributed with the inner circumferential surface of the annular mounting groove (212).

4. The neck assembly of the mannequin according to claim 3, wherein, The depth of the part of the annular mounting groove (212) located at the front side of the main body portion (21) in the radial direction of the main body portion (21) is smaller than the depth of the part of the annular mounting groove (212) located at the rear side of the main body portion (21) in the radial direction of the main body portion (21). The depth of the annular mounting groove (212) in the radial direction of the main body portion (21) is set to gradually increase from front to rear along the circumferential direction of the annular mounting groove (212).

5. The neck assembly of the mannequin according to claim 3, wherein, The vertical width of the part of the annular mounting groove (212) located at the front side of the main body portion (21) is set to gradually decrease from front to rear, and the vertical thickness of the elastically gradient portion (22) is set to gradually decrease from front to rear so that the upper and lower surfaces of the elastically gradient portion (22) are respectively fitted with the inner wall of the annular mounting groove (212).

6. The neck assembly of the mannequin according to claim 3, wherein, There are a plurality of annular mounting grooves (212), and the plurality of annular mounting grooves (212) are distributed in the length direction of the main body portion (21) and are spaced apart, and the mounting gap (211) and the elastically gradient portion (22) are respectively arranged in each annular mounting groove (212).

7. The neck assembly of the mannequin according to claim 6, wherein, The corresponding mounting gaps (211) in the plurality of annular mounting grooves (212) are distributed in the length direction of the main body portion (21) and are opposite to each other.

8. The neck assembly of the mannequin according to claim 6, wherein, The depths of the corresponding mounting gaps (211) in the plurality of annular mounting grooves (212) in the radial direction of the main body portion (21) are set to gradually decrease from top to bottom. The widths of the plurality of elastically gradient portions (22) in the radial direction of the main body portion (21) are set to gradually decrease from top to bottom.

9. The neck assembly of the mannequin according to claim 2, wherein, A deformation notch (23) is formed at the rear end of the elastic tapering portion (22), and the elastic tapering portion (22) is spaced apart from the rear wall surface of the mounting notch (211) at the deformation notch (23) to collectively form a deformation through-hole (24) that penetrates in the left-right direction of the main body portion (21).

10. A safety test dummy, characterized in that A neck assembly for a safety testing manikin according to any one of claims 1-9.

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