Simulation rack for human body lower limb space in automobile

Abstract

The utility model discloses a simulation rack for human body lower limb space in an automobile, which comprises a bottom frame, a foot space simulation component and a leg space simulation component, the foot space simulation component and the leg space simulation component are arranged on the bottom frame, and the foot space simulation component and the leg space simulation component are arranged at intervals along the length direction of the bottom frame. In the testing process, a testee stretches feet to a foot supporting plate of the foot space simulation component and supports shanks on a leg supporting plate of the leg space simulation component, and then the testee adjusts the angle of the foot supporting plate and the angle of the leg supporting plate through the foot adjusting assembly and the leg adjusting assembly according to the comfort degree of the testee. And the specific positions of the foot supporting plate and the leg supporting plate are recorded until the most comfortable posture is reached, the sitting posture states of different sitting heights of the testee and the comfortable space actually required by the lower limbs when the legs stretch forwards can be collected, and the device is used for multi-dimensional development verification of the lower limb space of a co-driver in the automobile development process, such as the multi-dimensional development verification of the lower limb space of the co-driver.

Description

Technical Field

[0001] The utility model relates to the technical field of simulation experimental benches, in particular to an experimental bench for the lower limb space of a human body in a car. Background Art

[0002] The automotive design industry has undergone an important transformation driven by new energy technologies. As cars evolve from a single means of transportation to a "third space", user experience and passenger comfort have become core considerations in automotive design. When designing traditional cars, the main focus is on the structure and engineering feasibility of the vehicle, which to a certain extent limits the design of the passenger space, making it more based on the physical structure and engineering requirements of the vehicle itself, rather than on the actual use needs of consumers. However, driven by new energy technologies, automotive design has ushered in new opportunities. Due to the innovations in power systems and structural layouts of new energy vehicles (such as electric vehicles), greater flexibility and possibilities are provided for the design of passenger space. Designers can focus more on meeting the actual needs of consumers, rather than just being limited by the physical structure of the vehicle.

[0003] Take the sitting comfort of passengers as an example. This is a very important and complex consideration. In the existing technology, the verification of the legroom and footroom of passengers during the development of new models usually requires the production of a prototype seating buck model for review and verification. This verification model often needs to be processed and produced through machining, 3D printing, etc., and then assembled into a complete vehicle model. This model not only has a high cost per vehicle, but also the model itself is formed in one go, and the surface structure is solidified and single, which can only achieve the effect of a single use evaluation.

[0004] Of course, the prior art also provides some simulation devices for testing ride comfort. For example, a Chinese patent document (application number CN220552616U) discloses a simulation device for the foot space of a car. This simulation device for the foot space of a car includes a base, and a support part established on the base, as well as a bottom plate simulation part, a front plate simulation part, a top plate simulation part and a side plate simulation part. Based on the concept of flexible reuse of models, the peripheral surface of the co-pilot's foot space is simplified, and the actual space of the co-pilot's feet is simulated by setting multiple simulation parts. The surface of the co-pilot's foot peripheral parts is converted into the space restriction surface of the model, and the design of each space restriction surface is simplified and flexibly adjustable in multiple directions, so as to verify the space requirements and comfort of the co-pilot's feet in various states such as normal sitting or lying positions.

[0005] However, this simulation device can only simulate the environment of the front passenger's foot space, but does not take into account the leg space requirements during actual riding. When the human body's legs are in different states of curled up or straightened, it will affect the position of the feet, making it impossible to accurately design a cabin space that meets consumers' needs based on the results obtained by the simulation device.

[0006] Therefore, the existing technology can only simulate the environment of the front passenger's foot space, ignoring the space where the legs are located in different postures, which will affect the position of the feet, and thus cannot accurately design a cabin space that meets the needs of consumers based on the results obtained by the simulation device. Utility Model Content

[0007] The purpose of the utility model is to solve the technical problem that the simulation device for testing riding comfort in the prior art can only simulate the environment of the co-pilot's foot space, ignoring the space where the legs are located in different postures, which will affect the position of the feet, making it impossible to accurately design a cabin space that meets the needs of consumers based on the results obtained by the simulation device.

[0008] In order to solve the above technical problems, an embodiment of the utility model discloses a simulation platform for the lower limb space of the human body in an automobile. The simulation platform includes a base frame, and a foot space simulation component and a leg space simulation component arranged on the base frame. The foot space simulation component and the leg space simulation component are arranged at intervals along the length direction of the base frame.

[0009] Among them, the foot space simulation component includes a foot support plate and a foot adjustment assembly. The lower edge of the foot support plate is hinged on the base frame. The foot adjustment assembly is arranged on the base frame and is transmission connected to the foot support plate. The foot adjustment assembly can link the foot support plate to rotate around its lower edge relative to the base frame.

[0010] In addition, the leg space simulation component includes a leg bracket, a leg support plate and a leg adjustment assembly. The leg bracket can be translatedly arranged on the base frame, the leg support plate and the leg adjustment assembly are arranged on the top of the leg bracket, the lower edge of the leg support plate is hinged to the top surface of the leg bracket, the leg adjustment assembly is transmission-connected to the leg support plate, and the leg adjustment assembly can drive the leg support plate to rotate around its lower edge relative to the top surface of the leg bracket.

[0011] By adopting the above technical scheme, this simulation bench of the lower limb space of the human body in the car takes the simulation of the lower limb space of the co-pilot as an example, and simulates the actual space of the co-pilot's lower limbs through the foot space simulation component and the leg space simulation component. The tester sits on the bench with a seat, facing the foot space simulation component and the leg space simulation component. Then, the tester extends his feet to the foot support board and supports his calves on the leg support board. Then, the tester adjusts the angles of the foot support board and the leg support board respectively according to his own comfort level using the foot adjustment component and the leg adjustment component until the most comfortable posture is reached. The inclination angle of the foot support board, the distance between the tester's two feet on the foot support board, the offset angle and the height in the vertical direction, the inclination angle of the leg support board, the distance between the tester's two legs on the leg support board and the offset angle, etc. are recorded. Multiple tests can be conducted to collect the actual comfort space required by the testers' lower limbs when sitting at different heights and with different leg extensions. This can be used for multi-dimensional development and verification of the co-pilot's lower limb space during automobile development, thereby providing data support for designing spaces that meet the comfort of passengers' lower limbs.

[0012] The foot space simulation component and the leg space simulation component of the simulation bench cooperate with each other and can more accurately test the space required for the passenger's lower limbs to be in a comfortable posture compared to a simulation device that tests the feet alone.

[0013] The utility model also discloses a simulation platform for the lower limb space of a human body in a car, wherein both sides of the base frame in the width direction are formed with slide rails extending along the length direction, and a slider movably adapted to the slide rail is provided at the bottom of the leg support.

[0014] By adopting the above technical solution, a slide rail is formed on the base frame, and a slider used in conjunction with the slide rail is formed at the bottom of the leg bracket. The movement of the slider relative to the slide rail realizes the adjustable distance between the leg bracket and the foot space simulation component on the base frame, thereby meeting the leg support requirements of people with different leg lengths, thereby improving the applicability of this simulation stand for people with different leg lengths.

[0015] The embodiment of the utility model also discloses a simulation platform for the lower limb space of a human body in a car, wherein two heel fixing parts are movably arranged on the board surface of the foot support board facing the leg support board, and the two heel fixing parts are arranged at intervals along the width direction of the bottom frame. Moreover, the two heel fixing parts are located near the lower edge of the leg support board.

[0016] By adopting the above technical solution, this simulation test bench is provided with two heel fixing parts on the foot support plate. When simulating the lower limb space of the co-pilot, the tester can place the heel in the heel fixing part of the foot support plate. On the one hand, it is helpful for the tester to maintain the foot in a comfortable position; on the other hand, the heel fixing part can make it easier to collect the space information occupied by the tester's footsteps.

[0017] The utility model embodiment also discloses a simulation platform for the lower limb space of the human body in a car, wherein an adjustment rail is arranged on the board surface of the foot support board facing the leg support board, the adjustment rail extends along the width direction of the base frame, and two heel fixing parts are slidably arranged on the adjustment rail.

[0018] By adopting the above technical solution, when the simulation platform is in use, the feet of the tester placed on the heel fixing part can drive the heel fixing part to slide in the adjustment guide rail along the width direction of the base frame, so that the placement position of the two feet of the tester in the width direction can be adjusted, thereby facilitating the measurement of the distance between the two feet of the tester in the width direction when the tester is in a comfortable state.

[0019] The embodiment of the utility model also discloses a simulation platform for the lower limb space of a human body in a car, and each heel fixing part comprises a mounting plate and an arc-shaped fixing bowl rotatably arranged on the mounting plate.

[0020] One side of the mounting plate is slidably arranged on the adjusting guide rail, and the arc-shaped fixed bowl is rotatably arranged on the other side of the mounting plate.

[0021] By adopting the above technical solution, the arc-shaped fixing bowl of the heel fixing part is adapted to the outer contour of the human heel, which can better fix the tester's foot. In addition, the tester's heel placed in the arc-shaped fixing bowl can drive the arc-shaped fixing bowl to rotate relative to the mounting plate, thereby facilitating the measurement of the swing angles of the two feet of the tester in a comfortable state.

[0022] The embodiment of the utility model further discloses a simulation platform for the lower limb space of a human body in a car. The simulation platform also includes a measuring plate and two support columns spaced apart along the width direction of the platform.

[0023] The lower ends of the two support columns are slidably connected to the corresponding slide rails on both sides of the frame along the width direction. The measuring plate extends along the width direction of the frame and its two ends are slidably mounted on the upper ends of the two support columns.

[0024] In addition, scale scales extending in the vertical direction are formed on the outer wall surfaces of the two support columns.

[0025] By adopting the above technical solution, the two support columns slide along the slide rails so that the measuring board is above the foot support board. When the tester's feet are placed on the foot support board, the measuring board is moved so that the measuring board is in contact with the upper end of the tester's feet, and the reading of the measuring board on the support column is read, which is the spatial distance required for the tester's feet in the vertical direction.

[0026] The embodiment of the utility model also discloses a simulation platform for the lower limb space of the human body in a car. The foot adjustment component includes a foot drive motor, a foot transmission member, and a retractable support rod arranged on the side of the foot support plate away from the leg support plate. The foot drive motor is connected to the foot transmission member, and the foot transmission member links the foot support plate to rotate around its lower edge relative to the base frame.

[0027] One end of the support rod is hinged to the bottom frame, and the other end is hinged to the wall surface of the foot support plate on the side away from the leg support plate.

[0028] In addition, the leg adjustment component includes a leg driving motor and a leg transmission member. The leg driving motor is connected to the leg transmission member, and the leg transmission member links the leg support plate to rotate around its lower edge relative to the top surface of the leg bracket.

[0029] By adopting the above technical solution, the foot support plate and the leg support plate driven by the foot drive motor and the leg drive motor respectively have the advantage of high control accuracy, which is conducive to the tester to adjust the foot support plate and the leg support plate to the most comfortable placement angle. In addition, the retractable support rod arranged on the side of the foot support plate away from the leg support plate can improve the support of the foot support plate and ensure the stability of the foot support plate.

[0030] The utility model also discloses a simulation platform for the lower limb space of a human body in a car, wherein foot scale scales are formed on the upper side and both side edges of the board surface of the foot support board close to the leg support board.

[0031] Leg scale scales are formed on the upper and lower edges of the board surface of the leg support board close to the foot support board.

[0032] By adopting the above technical solution, the foot scale provided on the foot support board can directly measure the space required by the tester's feet on the foot support board through the reading on the foot scale. Similarly, the leg scale provided on the leg support board can directly measure the space required by the tester's legs on the leg support board through the reading on the leg scale.

[0033] The utility model also discloses a simulation platform for the lower limb space of a human body in a car, wherein a foot angle scale plate is erected on the bottom frame and outside the lower edge end of the foot support plate, and the foot angle scale plate and the foot support plate are perpendicular to each other.

[0034] A leg angle ruler plate is erected on the top surface of the leg bracket and the outer side of the lower edge end of the leg support plate, and the leg angle ruler plate and the leg support plate are perpendicular to each other.

[0035] By adopting the above technical solution, the foot angle scale plate set on the base frame can directly measure the inclination angle of the test subject's foot in a comfortable state through the reading on the foot angle scale plate. Similarly, the leg angle scale plate set on the leg bracket can directly measure the inclination angle of the test subject's leg in a comfortable state through the reading on the leg angle scale plate. The reading is simple and convenient, which greatly improves the efficiency of the test.

[0036] The embodiment of the utility model also discloses a simulation platform for the lower limb space of a human body in a car, wherein the rotation angle range of the foot support plate around its lower edge relative to the vertical direction is within 0° to 70°.

[0037] The leg support plate rotates around its lower edge with respect to the vertical direction at an angle ranging from 0° to 75°.

[0038] By adopting the above technical solution, the rotation angle of the foot support plate and the leg support plate relative to the vertical direction is within the above range, which is more ergonomic. If the leg support plate and the leg support plate rotate beyond the above range, the tester may feel uncomfortable and the test is meaningless.

[0039] The beneficial effects of the utility model are:

[0040] The utility model provides a simulation platform for the lower limb space of a human body in an automobile, and the simulation platform includes a chassis, and a foot space simulation component and a leg space simulation component arranged on the chassis, wherein the foot space simulation component and the leg space simulation component are arranged at intervals along the length direction of the chassis, and during the test, the tester extends his foot to the foot support plate of the foot space simulation component, and supports his calf on the leg support plate of the leg space simulation component, and then the tester adjusts the angles of the foot support plate and the leg support plate respectively according to his own comfort level using the foot adjustment component and the leg adjustment component until the most comfortable posture is reached, and the specific positions of the foot support plate and the leg support plate are recorded. Multiple tests can be performed to collect the actual comfort space required by the lower limbs of the tester in different sitting heights and different leg extensions, which can be used for multi-dimensional development and verification of the lower limb space of the co-pilot during automobile development, for example. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a simulation stand for the lower limb space of a human body in a car provided by an embodiment of the utility model;

[0042] Figure 2 A top view of a simulation stand for the lower limb space of a human body in a car provided by an embodiment of the utility model;

[0043] Figure 3A schematic diagram of the structure of a simulation stand for the lower limb space of a human body in a car provided by an embodiment of the utility model, viewed from the direction of the foot space simulation component toward the leg space simulation frame;

[0044] Figure 4 The present invention is a schematic structural diagram of a simulation platform for the lower limb space of a human body in a car provided by an embodiment of the utility model, viewed along the width direction of the chassis.

[0045] Description of reference numerals:

[0046] 10. Simulation bench;

[0047] 100, chassis;

[0048] 110, slide rail;

[0049] 200. Footwell simulation component;

[0050] 210, foot support plate; 211, foot scale; 212, heel fixing part; 213, adjustment rail; 214, mounting plate; 215, arc-shaped fixing bowl;

[0051] 220, foot adjustment assembly; 221, foot drive motor; 222, foot transmission member; 223, support rod;

[0052] 230, foot angle ruler;

[0053] 300. Legroom simulation component;

[0054] 310, leg support plate; 311, leg scale; 320, leg adjustment assembly; 321, leg drive motor; 322, leg transmission member;

[0055] 330, leg support; 331, slider;

[0056] 340, leg angle ruler;

[0057] 400. Measuring plate; 500. Support column; 510. Scale ruler. DETAILED DESCRIPTION

[0058] The comfort of passengers' sitting posture is a crucial and complex consideration in the development of new models. In particular, the verification of passengers' legroom and footroom plays a decisive role in ensuring passengers' comfortable sitting posture. The following is a summary of some simulation devices and methods for verifying passengers' legroom and footroom in the development of new models in the existing technology:

[0059] A design method based on the three-dimensional human body. This method simulates the sitting posture of the occupants by building a three-dimensional human body model, so as to more accurately evaluate the leg and foot space. This design method can simulate the sitting posture of occupants of different body types by setting different size parameters on the model, so as to find the optimal leg and foot space design. This method can avoid the limitations of traditional two-dimensional design methods and consider the sitting comfort of the occupants more comprehensively.

[0060] Automobile simulation development technology uses computer simulation technology to build a virtual driving environment and simulate the sitting posture and driving behavior of the passengers. This method can quickly verify whether the design of the leg and foot space meets the comfort requirements, greatly shortening the product development cycle. Automobile simulation development technology can simulate different driving scenarios and road conditions by adjusting simulation parameters, and further evaluate the sitting comfort of the passengers.

[0061] Real-time rendering technology can achieve high-quality rendering and interaction in a virtual environment, allowing designers and engineers to more intuitively understand the sitting posture and comfort of passengers. By simulating the sitting posture and movements of passengers in a virtual environment, real-time rendering technology can more accurately evaluate whether the design of leg and foot space is reasonable. This technology can also help designers and engineers quickly iterate and optimize designs to improve the sitting comfort of passengers.

[0062] Physical prototype testing, although simulation devices and simulation technology can provide important references, physical prototype testing is still an important means to verify the comfort of passenger sitting posture. Physical prototype testing can more directly understand the comfort of leg and foot space by making an actual model of the interior space of the car and inviting passengers to experience it. Physical prototype testing can also find problems that are difficult to find with simulation devices and simulation technology, providing important feedback and improvement directions for product design.

[0063] However, in the prior art, the simulation device provided during the physical testing phase only takes into account the environment of the foot space, but does not take into account the leg space requirements during actual riding. When the human body's legs are in different states of curled up or straightened, the position of the feet will be affected, and thus it is impossible to accurately design a cabin space that meets the needs of consumers based on the results obtained by the simulation device.

[0064] To this end, the utility model provides a simulation platform for the lower limb space of the human body in an automobile. The simulation platform is provided with a foot space simulation component and a leg space simulation component. The foot space simulation component and the leg space simulation component respectively include support plates with adjustable angles for supporting the feet and legs. The simulation platform collects the actual comfort space required by the lower limbs of the tester when the sitting posture is at different sitting heights and the leg extension is different. The space required for the lower limbs of the passenger in a comfortable posture is tested more accurately, and then used for the multi-dimensional development and verification of the lower limb space of the co-pilot during the automobile development process.

[0065] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0066] like Figure 1-Figure 4 As shown, the embodiment of the utility model discloses a simulation platform 10 for the lower limb space of a human body in a car. The simulation platform 10 includes a base frame 100, and a foot space simulation component 200 and a leg space simulation component 300 arranged on the base frame 100. The foot space simulation component 200 and the leg space simulation component 300 are arranged at intervals along the length direction of the base frame 100.

[0067] Among them, the foot space simulation component 200 includes a foot support plate 210 and a foot adjustment assembly 220. The lower edge of the foot support plate 210 is hinged to the base frame 100. The foot adjustment assembly 220 is arranged on the base frame 100 and is transmission-connected to the foot support plate 210. The foot adjustment assembly 220 can link the foot support plate 210 to rotate around its lower edge relative to the base frame 100.

[0068] In addition, the leg space simulation component 300 includes a leg support plate 310, a leg adjustment component 320 and a leg bracket 330. The leg bracket 330 can be translatedly arranged on the base frame 100. The leg support plate 310 and the leg adjustment component 320 are arranged on the top of the leg bracket 330. The lower edge of the leg support plate 310 is hinged to the top surface of the leg bracket 330. The leg adjustment component 320 is transmission-connected to the leg support plate 310. The leg adjustment component 320 can link the leg support plate 310 to rotate around its lower edge relative to the top surface of the leg bracket 330.

[0069] It should be noted that, regarding the structure for the foot support plate 210 to rotate relative to the base frame 100, at least two movable hinges may be provided on the lower edge of the foot support plate 210, and the two movable hinges are spaced apart along the width direction of the base frame 100, and one side of each movable hinge is fixedly connected to the lower edge of the foot support plate 210, and the other side is fixedly connected to the base frame 100, so as to achieve the purpose of the foot support plate 210 rotating relative to the base frame 100. Of course, a rotating shaft extending along the width direction may also be provided on the base frame 100, and the lower edge of the foot support plate 210 forms an assembly hole sleeved on the rotating shaft. Of course, regarding the rotating connection structure between the foot support plate 210 and the base frame 100, it is not limited to the above two structures, and the present utility model does not make specific limitations on this.

[0070] The structure of the leg support plate 310 rotating relative to the leg bracket 330 is similar to the structure of the foot support plate 210 rotating relative to the base frame 100, and will not be described in detail here.

[0071] The simulation bench 10 of the lower limb space of the human body in the car takes the simulation of the lower limb space of the co-pilot as an example, and simulates the actual space of the lower limbs of the co-pilot through the foot space simulation component 200 and the leg space simulation component 300. The tester sits on the bench through the seat, facing the foot space simulation component 200 and the leg space simulation component 300, and then the tester extends his feet to the foot support plate 210 and supports his calves on the leg support plate 310. Then, the tester uses the foot adjustment component 220 and the leg adjustment component 320 to adjust the angles of the foot support plate 210 and the leg support plate 310 respectively according to his own comfort, until the most comfortable posture is reached, and the specific positions of the foot support plate 210 and the leg support plate 310 are recorded. Multiple tests can be carried out to collect the actual comfort space required by the lower limbs of the tester when sitting at different sitting heights and different leg extensions, which are used for the multi-dimensional development and verification of the lower limb space of the co-pilot during the development of the car, thereby providing data support for the design of a space that meets the comfort of the passenger's lower limbs.

[0072] The foot space simulation component 200 and the leg space simulation component 300 of the simulation bench 10 cooperate with each other, and compared with a simulation device that tests the feet alone, it is possible to more accurately test the space required for the passenger's lower limbs to be in a comfortable posture.

[0073] Of course, this simulation platform 10 of the lower limb space of the human body in the car can be used not only to simulate the lower limb space of the driving position, but also to simulate the lower limb space of the main driving position and the lower limb space of the back seat position. The utility model does not make specific limitations on this.

[0074] It should be noted that when simulating the lower limb space of the driving position, the simulation platform 10 may be provided with a simulation pedal on the foot support plate 210 to simulate the posture of the driver's feet placed on the pedal when driving. The specific structure of the simulation pedal is not specifically limited in the present invention.

[0075] For the convenience of explanation, the various structures of the simulation platform 10 are described below by taking the simulation platform 10 in the simulation of the lower limb space of the co-pilot position as an example.

[0076] The structure of the base frame 100 is described in detail below.

[0077] The base frame 100 is an important part of the platform structure, which carries all components of the simulation platform 10 and provides a stable foundation. In this embodiment, the base frame 100 is a plate-like structure made of a strong metal material, such as steel or aluminum alloy, to ensure its bearing capacity and durability.

[0078] Among them, slide rails 110 extending along the length direction are formed on both sides of the base frame 100 in the width direction, and a slider 331 movably adapted to the slide rail 110 is provided at the bottom of the leg bracket 330. The leg bracket 330 can adjust the interval corresponding to the foot space simulation component 200 through the slide rail 110 to meet the leg support needs of people with different leg lengths, thereby improving the applicability of this simulation stand 10.

[0079] Of course, in order to facilitate the movement of the simulation bench 10, a pulley assembly (not shown in the figure) can be set on the bottom of the base frame 100. When the simulation bench 10 needs to be moved, the pulley assembly on the bottom of the base frame 100 slides to drive the entire simulation bench 10 to move, saving time and effort.

[0080] The foot well simulation member 200 will be described in detail below.

[0081] The foot space simulation component 200 is used to simulate the space where the feet of a passenger are located when the passenger is in the front passenger seat. The foot support plate 210 can be rotated relative to the base frame 100 through the foot adjustment component 220 .

[0082] Specifically, Figure 1-Figure 2 As shown, the foot adjustment assembly 220 includes a foot drive motor 221, a foot transmission member 222, and a retractable support rod 223 disposed on the side of the foot support plate 210 away from the leg support plate 310. The foot drive motor 221 is connected to the foot transmission member 222, and the foot transmission member 222 links the foot support plate 210 to rotate around its lower edge relative to the base frame 100. The present invention does not specifically limit the structure and model of the foot drive motor 221 and the foot transmission member 222.

[0083] One end of the support rod 223 is hinged to the base frame 100, and the other end is hinged to the wall surface of the foot support plate 210 away from the leg support plate 310. Figure 1 As shown, two support rods 223 are arranged at intervals along the width direction of the base frame 100 on the side of the foot support plate 210 away from the leg support plate 310, so as to better provide support force for the foot support plate 210 and ensure that the foot support plate 210 is more stable when supporting the tester's feet.

[0084] like Figure 1 As shown, a foot angle plate 230 is erected on the base frame 100 and outside the lower edge end of the foot support plate 210, and the foot angle plate 230 and the foot support plate 210 are perpendicular to each other.

[0085] It should be noted that the dorsiflexion of the human ankle joint is 20-30°, the talocerecal joint inversion can reach 30°, and the eversion is 30-35°. Therefore, the rotation angle range of the foot support plate 210 around its lower edge relative to the vertical direction is within 0° to 70°. An angle exceeding the above rotation range is an angle that the human foot cannot reach and has no measurement significance.

[0086] More specifically, Figure 2 As shown, in this embodiment, a foot scale 211 is formed on the upper side and both side edges of the board surface of the foot support board 210 close to the leg support board 310. The foot scale 211 provided on the foot support board 210 can directly measure the space required by the tester's feet on the foot support board 210 through the reading on the foot scale 211.

[0087] Specifically, when the tester's feet are placed on the foot support plate 210 in a comfortable posture, the distance between the two toes of the tester can be measured by the upper foot scale 211, while the foot scale 211 on the two side edges can measure the distance occupied by the two feet of the tester in the length direction.

[0088] Furthermore, if Figure 1 As shown, in this embodiment, the simulation stand 10 further includes a measurement plate 400 and two support columns 500 spaced apart along the width direction of the stand.

[0089] The lower ends of the two support columns 500 are slidably connected to the corresponding slide rails 110 on both sides of the frame along the width direction. The measuring plate 400 extends along the width direction of the frame and its two ends are slidably mounted on the upper ends of the two support columns 500.

[0090] In addition, a scale 510 extending in the vertical direction is formed on the outer wall surface of the two support pillars 500 .

[0091] The two support columns 500 slide along the slide rails 110 so that the measuring board 400 is above the foot support plate 210. When the tester's feet are placed on the foot support plate 210, the measuring board 400 is moved so that the measuring board 400 abuts against the upper end of the tester's foot, and the reading of the measuring board 400 on the support column 500 is read, which is the space distance required for the tester's feet in the vertical direction.

[0092] The structure of the foot support plate 210 will be described in detail below.

[0093] like Figure 1-Figure 3 As shown, the foot support plate 210 is a plate-like structure, and during the test, the foot support plate 210 is used to support the soles of the tester's feet. In addition, in order to more realistically simulate the lower limb space of the co-pilot of the car, a carpet structure is set on the board surface of the foot support plate 210 near the leg support plate 310.

[0094] Two heel fixing parts 212 are movably provided on the board surface of the foot support board 210 facing the leg support board 310 , and the two heel fixing parts 212 are spaced apart along the width direction of the bottom frame 100 . Moreover, the two heel fixing parts 212 are located near the lower edge of the leg support board 310 .

[0095] This simulation bench 10 is provided with two heel fixing parts 212 on the foot support plate 210. When simulating the lower limb space of the co-pilot, the tester can place the heel in the heel fixing part 212 of the foot support plate 210. On the one hand, it is helpful for the tester to maintain the foot in a comfortable position; on the other hand, the heel fixing part 212 can make it easier to collect the space information occupied by the tester's footsteps.

[0096] An adjustment rail 213 is provided on the board surface of the foot support board 210 facing the leg support board 310 . The adjustment rail 213 extends along the width direction of the base frame 100 . The two heel fixing parts 212 are slidably provided on the adjustment rail 213 .

[0097] The tester's foot placed on the heel fixing part 212 can drive the heel fixing part 212 to slide in the adjustment guide rail 213 along the width direction of the base frame 100, so that the placement position of the two feet of the tester in the width direction can be adjusted, thereby facilitating the measurement of the distance between the two feet in the width direction when the tester is in a comfortable state.

[0098] The structure of the heel fixing portion 212 will be described in detail below.

[0099] Each heel fixing portion 212 includes a mounting plate 214 and an arc-shaped fixing bowl 215 rotatably disposed on the mounting plate 214. It should be noted that the mounting plate 214 of the heel fixing portion 212 is mainly used to connect it to the foot support plate 210, and the arc-shaped fixing bowl 215 is used to fix the heel of the tester.

[0100] One side of the mounting plate 214 is slidably disposed on the adjustment rail 213, and the arc-shaped fixed bowl 215 is rotatably disposed on the other side of the mounting plate 214, so that the tester can spread his feet in a comfortable posture, thereby facilitating the measurement of the tester's foot swing amount.

[0101] The leg space simulation member 300 will be described in detail below.

[0102] The leg space simulation component 300 is used to simulate the space where the legs of a passenger are located when the passenger is in the front passenger seat. The leg support plate 310 can be rotated relative to the leg bracket 330 through the leg adjustment component 320.

[0103] It should be noted that the leg support 330 is used to support the leg support plate 310, and in the vertical direction, the leg support plate 310 is partially higher than the foot support plate 210, which makes it easier for the leg support plate 310 to support the calf of the tester.

[0104] The leg adjustment assembly 320 includes a leg drive motor 321 and a leg transmission member 322. The leg drive motor 321 is connected to the leg transmission member 322, and the leg transmission member 322 drives the leg support plate 310 to rotate around its lower edge relative to the top surface of the leg bracket 330.

[0105] A leg angle plate 340 is erected on the top surface of the leg bracket 330 and outside the lower edge end of the leg support plate 310 , and the leg angle plate 340 and the leg support plate 310 are perpendicular to each other.

[0106] It should be noted that, for ergonomic considerations, the human knee joint generally has a flexion angle of 145° and can be straightened to 0°. In addition, considering that the co-pilot seat needs to be provided with a leg rest, the leg support plate 310 rotates around its lower edge relative to the vertical direction within a range of 0° to 75°. If the leg support plate 310 exceeds this rotation angle range, it is not ergonomic and has no measurement significance.

[0107] Furthermore, if Figure 2 As shown, in this embodiment, a leg scale 311 is formed on the upper and lower edges of the board surface of the leg support board 310 near the foot support board 210. The upper and lower distances of the lower legs of the two sides can be measured when the tester is in a comfortable posture.

[0108] In summary, the utility model discloses a simulation platform 10 for the lower limb space of a human body in a car. Taking the measurement of the lower limb space of a co-pilot as an example, the working process of the simulation platform 10 is described.

[0109] When assembling this simulation stand 10, the base frame 100 is used as a reference, and the foot space simulation component 200 and the leg space simulation component 300 are first assembled. First, the foot support plate 210 is assembled on the base frame 100, and then the foot drive motor 221 and the foot transmission member 222 are assembled. The foot drive motor 221 and the foot transmission member 222 are assembled on the base frame 100, and the output end of the foot drive motor 221 is connected to the input end of the foot transmission member 222, and the output end of the foot transmission member 222 is connected to the foot support plate 210. The heel fixing part 212 is installed on the foot support plate 210 by adjusting the guide rail 213, and the foot angle plate 230 is installed on the edge of the foot support plate 210, and then the two support rods 223 are assembled between the base frame 100 and the foot support plate 210. Then, the assembly of the leg space simulation component 300 is completed. First, the leg bracket 330 is assembled on the slide rail 110 of the base frame 100, and then the leg support plate 310, the leg drive motor 321 and the leg transmission member 322 are assembled. Similar to the feet, after completing the assembly of the above-mentioned leg components, the leg angle scale plate 340 is installed on the edge of the leg support plate 310, and the assembly of the simulation stand 10 is completed.

[0110] The simulation bench 10 is used in conjunction with a car seat, which is placed on the side of the leg support plate 310 away from the foot support plate 210. The tester sits on the car seat in a normal sitting position, and adjusts the position of the leg support 330 through the guide rail, thereby changing the relative position of the foot support plate 210 and the leg support plate 310, so that the tester's feet and calves are initially supported, and then the inclination angle of the leg support plate 310 is adjusted through the leg adjustment component 320, so that the tester's calves can be in a comfortable posture. Further, the tester's sole is stepped on the foot support plate 210, and the heel is located in the heel fixing part 212. The inclination angle of the foot support plate 210 is adjusted through the foot adjustment component 220, and the tester can adjust the position of the heel fixing part 212 of the left and right feet by himself, so that the left and right feet are in a comfortable posture. When the tester's legs and feet are adjusted to a comfortable position, the distance and the swing angle of the two legs are measured by the readings of the leg scale 311 on the leg support plate 310 (which can be calculated by the readings of the leg scale 311 on the upper and lower edges), the ankle joint angle is obtained by the readings on the leg angle scale plate 340 and the foot angle scale plate 230, the knee joint angle is obtained by the seat cushion angle of the car seat and the readings of the leg scale 311 on the leg support plate 310, and the two heel fixed angles are measured. The outward swing angle of the left and right feet can be obtained by measuring the inclination angle of the foot 212, the length of the left and right feet and the distance between the two feet can be obtained by reading the foot scale 211 on the foot support plate 210, and the distance between the toes in the vertical direction can be obtained by reading the scale 510 on the support column 500 of the measuring plate 400. Therefore, through the above measurements, the human joint parameters of the occupant when sitting comfortably, such as the thigh angle, knee joint angle, ankle joint angle, outward swing amount of the calf, outward swing amount of the sole of the foot, the distance between the knee joints and the distance between the soles of the feet, can be obtained.

[0111] This simulation bench 10 starts from the space requirements of the occupants when they are sitting comfortably, collects the human joint angle parameters of samples of different body heights and different sitting heights when they are sitting, and defines the boundaries of sitting comfort and discomfort based on the subjective evaluation of the samples and comfortable sitting posture, and defines the corresponding space parameters of the legs and feet when sitting in combination with the specific target population and sitting height by converting the subjective feeling of sitting comfort into specific quantifiable parameters.

[0112] It should be noted that, in addition to the implementation methods of the utility model described in the above-mentioned specific specific embodiments, those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. Although the description of the utility model is introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation method. On the contrary, the purpose of introducing the utility model in conjunction with the implementation method is to cover other options or modifications that may be extended based on the claims of the utility model. In order to provide an in-depth understanding of the utility model, the above description contains many specific details, and the utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0113] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0114] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0115] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0116] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A simulation platform for the lower limb space of a human body in a car, characterized in that: The invention comprises a base frame, and a foot space simulation member and a leg space simulation member arranged on the base frame, wherein the foot space simulation member and the leg space simulation member are arranged at intervals along the length direction of the base frame; wherein: The foot space simulation component includes a foot support plate and a foot adjustment assembly, the lower edge of the foot support plate is hinged to the base frame, the foot adjustment assembly is arranged on the base frame and is transmission-connected to the foot support plate, and the foot adjustment assembly can link the foot support plate to rotate relative to the base frame around its lower edge; and The leg space simulation component includes a leg bracket, a leg support plate and a leg adjustment assembly. The leg bracket can be translatedly arranged on the base frame, the leg support plate and the leg adjustment assembly are arranged on the top of the leg bracket, the lower edge of the leg support plate is hinged to the top surface of the leg bracket, the leg adjustment assembly is transmission-connected to the leg support plate, and the leg adjustment assembly can link the leg support plate to rotate around its lower edge relative to the top surface of the leg bracket.

2. The simulation platform for the lower limb space of a human body in a car as claimed in claim 1, characterized in that: Both sides of the base frame in the width direction are formed with slide rails extending along the length direction, and the bottom of the leg bracket is provided with a slider movably adapted to the slide rails.

3. The simulation platform for the lower limb space of a human body in a car as claimed in claim 2, characterized in that: The foot support plate has two heel fixing parts movably disposed on the plate surface facing the leg support plate, and the two heel fixing parts are spaced apart in the width direction of the base frame; and The two heel fixing portions are located near the lower edge of the leg supporting plate.

4. The simulation platform for the lower limb space of a human body in a car as claimed in claim 3, characterized in that: An adjustment rail is arranged on the board surface of the foot support board on one side facing the leg support board. The adjustment rail extends along the width direction of the base frame. The two heel fixing parts are slidably arranged on the adjustment rail.

5. The simulation platform for the lower limb space of a human body in a car as claimed in claim 4, characterized in that: Each of the heel fixing parts comprises a mounting plate and an arc-shaped fixing bowl rotatably arranged on the mounting plate; wherein, One side of the mounting plate can be slidably arranged on the adjusting guide rail, and the arc-shaped fixing bowl can be rotatably arranged on the other side of the mounting plate.

6. The simulation platform for the lower limb space of a human body in a car as claimed in claim 2, characterized in that: The simulation platform also includes a measuring plate and two support columns spaced apart along the width direction of the platform; wherein, The lower ends of the two support columns are slidably connected to the corresponding slide rails on both sides of the frame along the width direction, and the measuring plate extends along the width direction of the frame, and the two ends are slidably mounted on the upper ends of the two support columns; and The outer wall surfaces of the two support columns are formed with scale scales extending in the vertical direction.

7. The simulation platform for the lower limb space of a human body in a car according to any one of claims 1 to 6, characterized in that: The foot adjustment assembly includes a foot drive motor, a foot transmission member, and a retractable support rod arranged on the side of the foot support plate away from the leg support plate, the foot drive motor is connected to the foot transmission member, and the foot transmission member links the foot support plate to rotate around its lower edge relative to the base frame; One end of the support rod is hinged to the base frame, and the other end is hinged to the wall surface of the foot support plate on the side away from the leg support plate; and, The leg adjustment assembly includes a leg driving motor and a leg transmission member, wherein the leg driving motor is connected to the leg transmission member, and the leg transmission member drives the leg support plate to rotate around its lower edge relative to the top surface of the leg bracket.

8. The simulation platform for the lower limb space of a human body in a car as claimed in claim 1, characterized in that: On the board surface of the foot support board close to the leg support board, foot scale scales are formed on the upper side and both side edges; Leg scales are formed on the upper and lower edges of the board surface of the leg support board on the side close to the foot support board.

9. The simulation platform for the lower limb space of a human body in a car as claimed in claim 1, characterized in that: A foot angle ruler plate is erected on the bottom frame and outside the lower edge end of the foot support plate, and the foot angle ruler plate and the foot support plate are perpendicular to each other; A leg angle ruler plate is erected on the top surface of the leg bracket and on the outer side of the lower edge end of the leg support plate, and the leg angle ruler plate and the leg support plate are perpendicular to each other.

10. The simulation platform for the lower limb space of a human body in a car as claimed in claim 9, characterized in that: The foot support plate has a rotation angle of 0° to 70° relative to the vertical direction around its lower edge; The leg support plate has a rotation angle around its lower edge relative to the vertical direction in a range of 0° to 75°.

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