Dynamic safety performance testing device for automobile safety belt

Abstract

The utility model discloses a dynamic safety performance testing device for an automobile safety belt. The dynamic safety performance testing device for the automobile safety belt comprises a trolley body; the seat assembly comprises a seat body and a mounting assembly; and the collision waveform simulation assembly is arranged on the trolley body and is used for providing collision impact environments for different vehicle types and sending out collision signals, and the mounting assembly performs active pre-tightening action based on the collision signals. According to the dynamic safety performance testing device for the automobile safety belt, key performance indexes of the developed active pre-tightening safety belt can be tested repeatedly in the development stage, the simulation precision and the real automobile test consistency of the evaluation testing device and method are high, the operation is convenient, the practicability is high, the cost is low, and the testing device and method are suitable for popularization and application. Powerful support can be provided for the development of the active pre-tightening safety belt.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a dynamic safety performance testing device for automobile safety belts. Background Art

[0002] Relevant technologies point out that active pre-tensioned seat belts, as a safety protection device with an increasingly high configuration rate, can improve the safety performance of daily driving. Traditional seat belts mainly provide protection for occupants in the event of a collision, while active pre-tensioned seat belts can also provide vibration reminders to drivers and passengers, provide wearing convenience, eliminate seat belt gaps, and reduce occupant displacement during normal driving through the rotation of the seat belt retractor motor. In the relevant collision evaluation standards, two performance indicators of active pre-tensioned seat belts are mainly examined: the effective control of occupant movement during emergency braking before a collision and the force limiting performance of the seat belt during a collision.

[0003] At present, active pretensioner seat belt evaluation test devices and methods mainly focus on the activation and action execution tests of active pretensioner seat belts, while centralized test devices and methods for occupant movement control during emergency braking before collision and force limiting performance during collision are rarely mentioned in the prior art. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a vehicle safety belt dynamic safety performance test device, which has a simple structure, stable performance, safety and high efficiency.

[0005] According to the utility model, the dynamic safety performance test device of the automobile seat belt comprises: a trolley body; a seat assembly, wherein the seat assembly is arranged on the trolley body, the seat assembly comprises a seat body and a mounting assembly, the seat body is used to carry a dummy, and the mounting assembly is used to install an active pre-tensioning seat belt assembly; a collision waveform simulation assembly, wherein the collision waveform simulation assembly is arranged on the trolley body, and is used to provide a collision impact environment for different vehicle models and send out a collision signal, and the mounting assembly performs an active pre-tensioning action based on the collision signal.

[0006] According to the automobile seat belt dynamic safety performance test device of the utility model, in order to meet the development, test and evaluation needs of active pre-tensioned seat belts, an innovative solution is proposed to test the occupant movement control evaluation and the seat belt force limiting performance evaluation in a centralized manner. The key performance indicators of the developed active pre-tensioned seat belts can be tested repeatedly and repeatedly during the development stage, and the two indicator tests can be integrated in one test. The evaluation test device and method have high consistency in simulation accuracy and actual vehicle tests, are easy to operate, have strong practicability, and are low in cost, and can provide strong support for the development of active pre-tensioned seat belts.

[0007] In some embodiments, the collision waveform simulation component includes: a first energy absorbing member, one end of which is detachably connected to the trolley body; a second energy absorbing member, one end of which is detachably connected to the other end of the first energy absorbing member; an auxiliary energy absorbing member, the auxiliary energy absorbing member is detachably connected to the trolley body; and a bumper, the bumper being connected to the other end of the second energy absorbing member.

[0008] In some embodiments, a mounting plate is provided on the trolley body, and a plurality of mounting holes arranged in a matrix are formed on the mounting plate, and the mounting plate includes: a first plate, the first plate extends in a horizontal direction, and the seat assembly is detachably provided on the first plate by fasteners; and a second plate, the second plate extends in a vertical direction, and the collision waveform simulation assembly is detachably provided on the second plate by fasteners.

[0009] In some embodiments, the active pretensioning seat belt assembly includes a seat belt retractor and a seat belt buckle, and the mounting assembly includes: a support frame, the support frame having a fixed plate, the fixed plate extending in a vertical direction; a height adjuster mounting bracket, the height adjuster mounting bracket being detachably disposed on the fixed plate; a retractor mounting bracket, the retractor mounting bracket being detachably connected to the first plate and arranged adjacent to the seat body, the seat belt retractor being disposed on the retractor mounting bracket; and a buckle mounting bracket, the buckle mounting bracket being detachably connected to the first plate, the buckle mounting bracket being arranged adjacent to the seat body, and the seat belt buckle being disposed on the buckle mounting bracket.

[0010] In some embodiments, the height adjuster mounting bracket includes a mounting seat and a rotating plate, the rotating plate and the mounting seat can rotate relative to each other, the mounting seat is formed with a first groove, the first groove extends along the circumference of the mounting seat, and the rotating plate is formed with a second groove, the second groove extends along the radial direction of the mounting seat, and there are multiple second grooves, and the multiple second grooves are arranged at intervals in the axial direction of the mounting seat.

[0011] In some embodiments, the vehicle seat belt dynamic safety performance testing device further includes: a traction assembly, wherein the traction assembly is connected to the trolley body and is used to provide driving force to the trolley body.

[0012] In some embodiments, the automobile seat belt dynamic safety performance testing device also includes: a brake assembly, which is arranged on the trolley body, and the brake assembly includes a hydraulic pipe and a brake caliper, and the brake caliper is arranged on the four wheels of the trolley body. The hydraulic pipe is connected to the brake caliper and is used to provide braking force to the trolley body through the brake caliper.

[0013] In some embodiments, the vehicle seat belt dynamic safety performance testing device further includes: a control module, wherein the control module is electrically connected to the brake assembly and is used to transmit a brake signal to the brake assembly.

[0014] In some embodiments, the vehicle seat belt dynamic safety performance testing device further includes: a counterweight block, which is disposed on the trolley body and is used to adjust the weight of the trolley body.

[0015] In some embodiments, the automobile seat belt dynamic safety performance testing device also includes: a seat belt force sensor and a judgment module, the seat belt force sensor is arranged on the seat belt body and is electrically connected to the judgment module, the seat belt force sensor is used to measure the limit force value and pre-tension value of the seat belt, and transmit the measurement data to the judgment module.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a vehicle safety belt dynamic safety performance testing device according to an embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A schematic diagram of another perspective of the vehicle seat belt dynamic safety performance test device shown in ;

[0019] Figure 3 yes Figure 2 A partial enlarged schematic diagram of a collision waveform simulation component shown in ;

[0020] Figure 4 yes Figure 2 A partial enlarged schematic diagram of the installation assembly shown in FIG.

[0021] Reference numerals:

[0022] 100. Automobile seat belt dynamic safety performance test device;

[0023] 1. Trolley body; 11. Mounting plate; 111. First plate; 112. Second plate;

[0024] 2. Seat body;

[0025] 3. Installation assembly; 31. Support frame; 311. Fixing plate;

[0026] 32. Height adjuster mounting bracket; 321. Mounting seat; 3211. First groove; 322. Rotating plate; 3221. Second groove;

[0027] 33. Retractor mounting bracket; 34. Lock buckle mounting bracket;

[0028] 4. Collision waveform simulation component; 41. First energy absorbing member; 42. Second energy absorbing member; 43. Auxiliary energy absorbing member; 44. Bumper;

[0029] 5. Brake assembly; 51. Hydraulic pipe;

[0030] 6. Counterweight. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] Reference below Figure 1-Figure 4 A vehicle safety belt dynamic safety performance testing device 100 according to an embodiment of the first aspect of the utility model is described.

[0033] like Figure 1 As shown, the vehicle seat belt dynamic safety performance testing device 100 according to the first embodiment of the utility model includes: a trolley body 1, a seat assembly and a collision waveform simulation assembly 4.

[0034] Specifically, the seat assembly is arranged on the trolley body 1, and the seat assembly includes a seat body 2 and a mounting assembly 3. The seat body 2 is used to carry a dummy, and the mounting assembly 3 is used to install an active pre-tightening seat belt assembly. The collision waveform simulation assembly 4 is arranged on the trolley body 1, and is used to provide a collision impact environment for different vehicle models and send out a collision signal. The mounting assembly 3 performs an active pre-tightening action based on the collision signal. Therefore, the automobile seat belt dynamic safety performance test device 100 has a simple structure, stable performance, safety and high efficiency.

[0035] According to the automobile seat belt dynamic safety performance testing device 100 of the embodiment of the utility model, in order to meet the development, test and evaluation needs of active pre-tensioned seat belts, an innovative solution is proposed to test the occupant movement control evaluation and the seat belt force limiting performance evaluation in a centralized manner, and the key performance indicators of the developed active pre-tensioned seat belts can be tested repeatedly and repeatedly during the development stage, and the two indicator tests can be integrated in one test. The evaluation test device and method have high consistency in simulation accuracy and actual vehicle tests, are easy to operate, have strong practicability, and are low in cost, and can provide strong support for the development of active pre-tensioned seat belts.

[0036] In some embodiments of the present invention, the collision waveform simulation component 4 includes: a first energy absorbing member 41, one end of which is detachably connected to the trolley body 1; a second energy absorbing member 42, one end of which is detachably connected to the other end of the first energy absorbing member 41, and the first energy absorbing member 41 and the second energy absorbing member 42 are the main energy absorbing components; an auxiliary energy absorbing member 43, which is detachably connected to the trolley body 1; and a bumper 44, which is connected to the other end of the second energy absorbing member 42. Figure 3 As shown, the first energy absorbing member 41 is a cylindrical energy absorbing box, the second energy absorbing member 42 is a square energy absorbing box, the auxiliary energy absorbing member 43 is a square energy absorbing tube or a circular energy absorbing tube, the first energy absorbing member 41 and the second energy absorbing member 42 are connected by flanges, and the bumper 44 and the auxiliary energy absorbing member 43 are connected by welding. Therefore, the structure of the collision waveform simulation component 4 is simple, and by changing the material thickness, length, arrangement position and quantity of the collision waveform simulation component 4, the impact environment corresponding to the generated deceleration waveform can simulate the collision strength of the whole vehicle, which is convenient for reproducing the collision impact environment of different models and laying a foundation for the testing of various models.

[0037] In some embodiments of the utility model, a mounting plate 11 is provided on the trolley body 1, and a plurality of mounting holes arranged in a matrix are formed on the mounting plate 11. The mounting plate 11 comprises: a first plate 111, the first plate 111 extends in a horizontal direction, and the seat assembly is detachably mounted on the first plate 111 by fasteners; and a second plate 112, the second plate 112 extends in a vertical direction, and the collision waveform simulation assembly 4 is detachably mounted on the second plate 112 by fasteners. Figure 2 As shown, the mounting hole is formed as a threaded hole, the first plate 111 is arranged on the upper side of the trolley body 1, and the second plate 112 is arranged on the front side of the trolley body 1. Thus, through the clever design of the mounting plate 11, the fastener can conveniently assemble the collision waveform simulation component 4 and the seat component at the position required for the test.

[0038] In some embodiments of the utility model, the active pre-tensioning seat belt assembly includes a seat belt retractor and a seat belt buckle, and the installation assembly 3 includes: a support frame 31, on which a fixing plate 311 is provided, and the fixing plate 311 extends in the vertical direction; a height adjuster mounting bracket 32, and the height adjuster mounting bracket 32 ​​is detachably arranged on the fixing plate 311; a retractor mounting bracket 33, and the retractor mounting bracket 33 is detachably connected to the first plate 111 and arranged adjacent to the seat body 2, and the seat belt retractor is arranged on the retractor mounting bracket 33; a buckle mounting bracket 34, and the buckle mounting bracket 34 is detachably connected to the first plate 111, and the buckle mounting bracket 34 is arranged adjacent to the seat body 2, and the seat belt buckle is arranged on the buckle mounting bracket 34. Therefore, the structure of the installation assembly 3 is simple, easy to assemble and use, reduces the production difficulty and production cost, and simplifies the preparation steps for the test.

[0039] In some embodiments of the present invention, Figure 4 As shown, the height adjuster mounting bracket 32 ​​includes a mounting seat 321 and a rotating plate 322. The rotating plate 322 and the mounting seat 321 can rotate relative to each other. The mounting seat 321 is formed with a first groove 3211, which extends along the circumference of the mounting seat 321. The rotating plate 322 is formed with a second groove 3221, which extends along the radial direction of the mounting seat 321. There are multiple second grooves 3221, which are arranged at intervals in the axial direction of the mounting seat 321. Therefore, the height adjuster mounting bracket 32 ​​has a simple structural design. The first groove 3211 is provided to meet the requirements of the pull-out angle of the seat belt webbing of different models, and the second groove 3221 is provided to meet the installation requirements of height adjusters of different specifications.

[0040] In some embodiments of the utility model, the automobile seat belt dynamic safety performance testing device 100 also includes: a traction assembly and a brake assembly 5, the traction assembly is connected to the trolley body 1, and is used to provide driving force to the trolley body 1; the brake assembly 5 is arranged on the trolley body 1, and the brake assembly 5 includes a hydraulic pipe 51 and a brake caliper, the brake caliper is arranged on the four wheels of the trolley body, and the hydraulic pipe 51 is connected to the brake caliper, and is used to provide braking force to the trolley body 1 through the brake caliper.

[0041] In some embodiments of the utility model, the vehicle seat belt dynamic safety performance test device 100 further includes: a control module, the control module is electrically connected to the brake assembly 5, and is used to transmit a brake signal to the brake assembly 5. After receiving the brake signal, the brake assembly 5 presses the hydraulic oil to the brake caliper, so that a specific brake waveform can be generated according to the test requirements. Furthermore, the control module can also be electrically connected to the traction assembly to transmit a drive signal to the traction assembly.

[0042] Furthermore, the tester can send corresponding instructions to the control module through the remote control device, and the control module sends a braking signal and a driving signal to the brake assembly 5 and the traction assembly respectively. Thus, the controllability of the test device is improved, and it is convenient for the tester to test the dynamic performance of the automobile seat belt.

[0043] In some embodiments of the present invention, the vehicle seat belt dynamic safety performance test device 100 further includes: a counterweight block 6, which is arranged on the trolley body 1 and is used to adjust the weight of the trolley body 1. Thus, a condition is provided for adjusting the braking acceleration curve to meet the standard channel range.

[0044] In some embodiments of the utility model, the automobile safety belt dynamic safety performance test device 100 further includes: a safety belt force sensor and a judgment module, the safety belt force sensor is arranged on the safety belt body and is electrically connected to the judgment module, the safety belt force sensor is used to measure the force limit value and preload value of the safety belt, and transmit the measurement data to the judgment module. Therefore, the automobile safety belt dynamic safety performance test device 100 is highly practical and easy to operate.

[0045] The following will refer to Figure 1-Figure 4 A vehicle seat belt dynamic safety performance testing device 100 according to a specific embodiment of the utility model is described.

[0046] As shown in the figure, the automobile seat belt dynamic safety performance testing device 100 includes: a trolley body 1, a seat assembly, a collision waveform simulation assembly 4, a traction assembly, a braking assembly 5, a control module, a counterweight block 6, a seat belt force sensor and a judgment module.

[0047] Specifically, the seat assembly, the collision waveform simulation assembly 4, the brake assembly 5, the control module, the counterweight 6 and the seat belt force sensor are all arranged on the trolley body 1. The seat assembly includes a seat body 2 and a mounting assembly 3. The seat body 2 is used to carry a dummy. The mounting assembly 3 is used to install the active pre-tensioning seat belt assembly. The collision waveform simulation assembly 4 is used to provide a collision impact environment for different vehicle models and send a collision signal. The collision waveform simulation assembly 4 includes: a first energy absorbing member 41, a second energy absorbing member 42 and an auxiliary energy absorbing member 43. The first energy absorbing member 41 is a cylindrical energy absorbing box, and the second energy absorbing member 42 is a square energy absorbing box. The first energy absorbing member 41 and the second energy absorbing member 42 are the main energy absorbing components. The auxiliary energy absorbing member 43 is a square energy absorbing cylinder or a circular energy absorbing cylinder. The first energy absorbing member 41 and the second energy absorbing member 42 are connected by a flange, and the bumper 44 and the auxiliary energy absorbing member 43 are connected by welding.

[0048] The mounting plate 11 is formed with a plurality of threaded holes arranged in a matrix. The mounting plate 11 includes: a first plate 111 and a second plate 112. The seat assembly is detachably mounted on the first plate 111 by fasteners, and the collision waveform simulation assembly 4 is detachably mounted on the second plate 112 by fasteners. The mounting assembly 3 includes: a support frame 31, a height adjuster mounting bracket 32, a retractor mounting bracket 33, and a buckle mounting bracket 34. The support frame 31 is provided with a fixing plate 311. The height adjuster mounting bracket 32 ​​is detachably mounted on the fixing plate 311. The retractor mounting bracket 33 is detachably connected to the first plate 111 and arranged adjacent to the seat body 2. The seat belt retractor is arranged on the retractor mounting bracket 33. The buckle mounting bracket 34 is detachably connected to the first plate 111. The buckle mounting bracket 34 is arranged adjacent to the seat body 2. The seat belt buckle is arranged on the buckle mounting bracket 34. By providing a plurality of threaded holes arranged in a matrix on the mounting plate 11 , the position adjustment of the collision waveform simulation component 4 , the retractor mounting bracket 33 and the buckle mounting bracket 34 is facilitated, thereby improving the versatility of the test device.

[0049] The height adjuster mounting bracket 32 ​​includes a mounting seat 321 and a rotating plate 322. The rotating plate 322 and the mounting seat 321 can rotate relative to each other. The mounting seat 321 is formed with a first groove 3211, and the first groove 3211 extends along the circumference of the mounting seat 321. A plurality of second grooves 3221 are formed on the rotating plate 322, and each second groove 3221 extends along the radial direction of the mounting seat 321.

[0050] The traction assembly is connected to the trolley body 1 and is used to provide driving force to the trolley body 1. The brake assembly 5 is provided on the trolley body 1 and is used to provide braking force to the trolley body 1. The control module is electrically connected to the brake assembly 5 and is used to transmit a braking signal to the brake assembly 5. The control module is electrically connected to the traction assembly and transmits a driving signal to the traction assembly. The tester can send a corresponding signal to the control module through the remote control device, and the control module sends a braking signal and a driving signal to the brake assembly 5 and the traction assembly respectively.

[0051] The counterweight block 6 is arranged on the trolley body 1 for adjusting the weight of the trolley body 1. The seat belt force sensor is arranged on the seat belt body and electrically connected to the judgment module. The seat belt force sensor is used to measure the force limit value and pre-tension value of the seat belt and transmit the measurement data to the judgment module.

[0052] The vehicle safety belt dynamic safety performance testing method according to the second embodiment of the utility model is applied to the vehicle safety belt dynamic safety performance testing device 100 according to the first embodiment of the utility model.

[0053] Specifically, the dynamic safety performance test method of automobile seat belts includes:

[0054] Step S1, placing a dummy on the seat body 2 and wearing the seat belt to be tested, and arranging a high-speed camera;

[0055] Step S2, accelerating the trolley body 1 to the target speed, braking the trolley body 1, and starting a high-speed camera to shoot the braking process and the dummy;

[0056] Step S3, collecting shooting data and measuring the movement of the center of mass of the dummy head;

[0057] Step S4, determining whether the movement amount of the dummy head mass center is within the target range;

[0058] Step S5, making the trolley body 1 collide with the rigid wall at the remaining speed and sending a collision signal;

[0059] Step S6, receiving the collision signal, causing the active pre-tightening seat belt assembly to perform an active pre-tightening action;

[0060] Step S7, measuring the force limit value and preload value of the seat belt to be tested;

[0061] Step S8: Determine the force limiting performance and pre-tensioning performance of the seat belt to be tested.

[0062] According to the automobile seat belt dynamic safety performance testing method of the embodiment of the utility model, by being applied to the automobile seat belt dynamic safety performance testing device 100 of the above-mentioned first aspect embodiment, the simulation accuracy and the actual vehicle test are highly consistent, the operation is convenient, the practicability is strong, and the cost is low, which can provide strong support for the development of active pretensioning seat belts.

[0063] Further, in step S6, the active pre-tensioning action is to transmit a retraction signal to the seat belt retractor so that the seat belt retractor retracts the seat belt to be tested.

[0064] The following is a detailed description of a method for testing the dynamic safety performance of a vehicle seat belt according to a specific embodiment of the present utility model.

[0065] Specifically, first place the dummy on the seat body 2 and wear the active pre-tensioned seat belt to be tested. The trolley body is pulled and accelerated as a whole by the traction component. After accelerating to the target speed, a brake signal is input to the brake component 5 by remote control. After receiving the brake signal, the brake device establishes hydraulic oil pressure and presses the brake caliper through the hydraulic pipe 51. At this time, the trolley body 1 generates deceleration. By matching and debugging the braking force of the brake component 5 and the weight of the trolley body 1 in advance, the deceleration generated at this time can fall within the channel range required by the standard.

[0066] A high-speed camera is used to film the braking process and the dummy on the seat, and the braking start moment and the entire process before the collision are recorded. The high-speed camera can be used to analyze whether the active pre-tensioned seat belt can restrain the dummy during the braking process of the trolley body 1, and whether the movement of the dummy's head center of mass can be controlled within the required range, providing a basic hardware platform for the active pre-tensioned seat belt test on the occupant movement.

[0067] After the trolley body 1 completes the braking and recording of the passenger's movement, the trolley collides with the rigid wall at a certain residual speed. At this time, the various components of the collision waveform simulation component 4 are deformed, buffering and absorbing energy, creating an impact environment equivalent to the collision of the entire vehicle. In this impact environment, the dummy on the seat continues to move due to inertia, driving the seat belt webbing worn on its chest and abdomen to pull out. At this time, the force limit rod in the active pre-tightening seat belt retractor is twisted and deformed, causing the webbing acting on the dummy to be pulled out with a certain safety force value, thereby protecting the dummy. In this process, the size of the force limit value can be measured through the seat belt force sensor, creating conditions for the evaluation of the force limit performance of the seat belt.

[0068] In particular, the evaluation of the above two performance indicators of active pretensioning seat belts can be completed by integrated testing in one test. The dynamic safety performance test device and test method of the automobile seat belt in the embodiment of the utility model has high consistency in simulation accuracy and actual vehicle test, is easy to operate, has strong practicality, and is low in cost, which can provide strong support for the development of active pretensioning seat belts.

[0069] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0070] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0071] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0073] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle seat belt dynamic safety performance test device, characterized in that: include: Trolley body; A seat assembly, the seat assembly is arranged on the trolley body, the seat assembly comprises a seat body and a mounting assembly, the seat body is used to carry a dummy, and the mounting assembly is used to install an active pre-tensioning seat belt assembly; A collision waveform simulation component is arranged on the trolley body, and is used to provide a collision impact environment for different vehicle models and send out a collision signal. The installation component performs an active pre-tightening action based on the collision signal.

2. The vehicle safety belt dynamic safety performance testing device according to claim 1 is characterized in that: The collision waveform simulation component comprises: a first energy absorbing member, one end of which is detachably connected to the trolley body; a second energy absorbing member, wherein one end of the second energy absorbing member is detachably connected to the other end of the first energy absorbing member; An auxiliary energy absorbing member, the auxiliary energy absorbing member being detachably connected to the trolley body; A bumper is connected to the other end of the second energy absorbing member.

3. The vehicle safety belt dynamic safety performance testing device according to claim 2 is characterized in that: The trolley body is provided with a mounting plate, on which a plurality of mounting holes arranged in a matrix are formed, and the mounting plate comprises: a first plate, the first plate extending in a horizontal direction, the seat assembly being detachably mounted on the first plate by a fastener; The second plate extends in a vertical direction, and the collision waveform simulation component is detachably arranged on the second plate through a fastener.

4. The vehicle safety belt dynamic safety performance testing device according to claim 3 is characterized in that: The active pre-tensioning seat belt assembly includes a seat belt retractor and a seat belt buckle, and the installation assembly includes: A support frame, wherein a fixing plate is provided on the support frame, and the fixing plate extends in a vertical direction; a height adjuster mounting bracket, the height adjuster mounting bracket being detachably mounted on the fixing plate; a retractor mounting bracket, the retractor mounting bracket being detachably connected to the first plate and arranged adjacent to the seat body, the seat belt retractor being arranged on the retractor mounting bracket; A lock buckle mounting bracket is detachably connected to the first plate, the lock buckle mounting bracket is arranged adjacent to the seat body, and the seat belt buckle is arranged on the lock buckle mounting bracket.

5. The vehicle safety belt dynamic safety performance testing device according to claim 4, characterized in that: The height adjuster mounting bracket includes a mounting seat and a rotating plate, the rotating plate and the mounting seat can rotate relative to each other, the mounting seat is formed with a first groove, the first groove extends along the circumference of the mounting seat, the rotating plate is formed with a second groove, the second groove extends along the radial direction of the mounting seat, there are multiple second grooves, and the multiple second grooves are arranged at intervals in the axial direction of the mounting seat.

6. The vehicle safety belt dynamic safety performance testing device according to any one of claims 1 to 5, characterized in that: Also includes: A traction assembly is connected to the trolley body and is used to provide driving force to the trolley body.

7. The vehicle safety belt dynamic safety performance testing device according to any one of claims 1 to 5, characterized in that: Also includes: A brake assembly is arranged on the trolley body, and the brake assembly includes a hydraulic pipe and a brake caliper. The brake caliper is arranged on the four wheels of the trolley body. The hydraulic pipe is connected to the brake caliper and is used to provide braking force to the trolley body through the brake caliper.

8. The vehicle safety belt dynamic safety performance testing device according to claim 7, characterized in that: Also includes: A control module is electrically connected to the brake assembly and is used to transmit a brake signal to the brake assembly.

9. The vehicle safety belt dynamic safety performance testing device according to any one of claims 1 to 5, characterized in that: Also includes: A counterweight block is arranged on the trolley body and is used to adjust the weight of the trolley body.

10. The vehicle safety belt dynamic safety performance testing device according to any one of claims 1 to 5, characterized in that: Also includes: A seat belt force sensor and a judgment module, wherein the seat belt force sensor is arranged on the seat belt body and is electrically connected to the judgment module, and the seat belt force sensor is used to measure the force limit value and pre-tension value of the seat belt and transmit the measurement data to the judgment module.

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