A test dummy for maintaining the spinal shape of a car seat

Abstract

The present invention provides a test dummy for maintaining the spinal morphology of an automobile seat, belonging to the technical field of automobile seat test devices. The dummy comprises a prosthetic buttocks and a prosthetic back. The position of the prosthetic buttocks is adjusted by weights and fine-tuning weights. The fine-tuning weights are uniformly placed in a weight box. The prosthetic buttocks position is adjusted to meet the requirements of different seat positions by using small weights in the weight box, thereby increasing the universality of the dummy. The position of the prosthetic back is determined by the position of the prosthetic buttocks. The prosthetic back is divided into three parts according to the distribution of human bones and the degree of freedom law in the theory of kinematic mechanics, namely, a first part that simulates the human sacrum and the fourth and fifth lumbar vertebrae; a second part that simulates the first to third lumbar vertebrae and the seventh to twelfth thoracic vertebrae; and a third part that simulates the first to seventh thoracic vertebrae. Each part is designed with weights and graded damping for controlling the relative angles between the prosthetic backs, thereby simulating or measuring the state parameters of the automobile seat maintaining the real human spine.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile seat test devices, and in particular relates to a test dummy for an automobile seat that maintains the spinal shape. Background Art

[0002] In 2011, Hyundai Motor Company filed US7878080B2, a patent application for a dummy designed to simulate the human skeleton, generating test data for evaluating car seat comfort. The HPM dummy, a commonly used physical device in the industry for establishing key vehicle reference points and dimensions, has evolved into its second generation. Compared to the first generation, this device now includes a test and evaluation device for a few additional comfort parameters, such as lumbar support. From the perspective of car seat comfort, current test dummy characterization parameters only cover general comfort parameters such as torso angle, lumbar support, thigh angle, and calf angle. These dummy models are simple replicas of the human skeleton, lacking operability and often being complex to operate. Summary of the Invention

[0003] The principles of human movement indicate that the comfort level of spinal support provided by a car seat is strongly correlated with the degree of fatigue or strain experienced. This patent ignores areas of the human body that are less susceptible to fatigue and instead focuses on the details of the principles behind the comfort level provided by car seats. This fills a gap in the field of lean comfort and provides experimental data support for spinal testing and design in car seats.

[0004] To address the above technical issues, the present invention provides a test dummy for an automobile seat that maintains spinal morphology. The dummy comprises a prosthetic hip and a three-part prosthetic back. The prosthetic hip is used to position the spine. Adjustment of the prosthetic hip position is achieved through weights and fine-tuning weights, which are uniformly placed in a weight box. Fine-tuning is achieved using small weights in the weight box to accommodate different seat H-point positions, increasing the dummy's universal applicability. Based on the distribution of the human skeleton and the degree of freedom laws in kinematics theory, the prosthetic back is divided into three parts: the first part, which simulates the sacrum and the fourth and fifth lumbar vertebrae; the second part, which simulates the first through third lumbar vertebrae and the seventh through twelfth thoracic vertebrae; and the third part, which simulates the first through seventh thoracic vertebrae. Each part is designed with weights and graded damping to control the relative angles between the prosthetic backs, simulating the morphology of a real person's spine.

[0005] This patent relates to a test dummy for maintaining the spinal shape of a car seat. It is designed with three performance parameters that characterize the degree of fit and support between the driver's spine and the seat back. They are the amount of support the seat provides to the driver's waist, corresponding to the lumbar support depth measuring ruler; the lumbar lordosis angle, corresponding to the lumbar angle ruler; and the thoracic kyphosis angle, corresponding to the thoracic angle ruler; it is designed with calibration positioning holes and different connection methods between the T-shaped reference rod and the dummy back, as well as the design of a graded damper.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a test dummy for a car seat that maintains the spinal shape, comprising: a positioning rod, multiple T-rods, multiple dampers and multiple false backs, one end of the T-rod is fixedly connected to the positioning rod, the other end of the T-rod is rotatably connected to the damper, the damper is fixedly connected to the false back, and the damper is also provided with a false back weight loading rod; the positioning rod is provided with multiple angle reading panels, the number of angle reading panels is the same as the number of false backs, the false back is provided with an angle indicator, the angle indicator intersects with the angle reading panel in spatial position, and the angle indicator can move within the range of the angle reading panel under the action of the false back, a weight box is provided at the near-ground end of the positioning rod, and the positioning rod and the weight box are connected through a false hip weight loading rod.

[0007] Furthermore, the false back is a sheet-like structure, with three or more pieces, a horizontal width of 100mm-250mm, a vertical height of 450-600mm, and a thickness of less than 3mm.

[0008] Furthermore, the horizontal width of the false back is 100 mm.

[0009] Furthermore, the false back weight loading rod can be loaded with weights and dumbbells, and the weight and quantity of the loaded weights are proportional to the horizontal width of the false back.

[0010] Furthermore, the T-bar is hinged to the damper, and a rubber gasket is provided at the hinge position.

[0011] Furthermore, the rubber gasket is opened and can be installed in an inserting manner.

[0012] Compared with the existing technology, it has the following beneficial effects:

[0013] The present invention ignores the parts of the human body that are less prone to fatigue, and focuses on solving the details of the comfort principle of the car seat supporting the driver's spine, filling the gap in lean comfort and providing test data support for car seat spine testing and design. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the weightless three-dimensional structure of the present invention.

[0016] Figure 3 Schematic diagram I of the T-bar and damper of the present invention.

[0017] Figure 4 Schematic diagram II of the T-bar and damper of the present invention.

[0018] Figure 5 Schematic diagram of the scale of the present invention.

[0019] In the picture:

[0020] 1- Positioning rod; 2- T-rod; 3- Damper; 4- False back; 5- Angle reading panel; 6- Angle indicator; 7- Weight box; 8- Connection between T-rod and positioning rod; 9- False back weight loading rod; 10- False hip weight loading rod. DETAILED DESCRIPTION

[0021] It should be noted that in the description of the present invention, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction.

[0022] In the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, "fixed" can refer to fixed connection, detachable connection, or integration; connection can refer to mechanical connection or electrical connection; connection can refer to direct connection or indirect connection through an intermediate medium, and can refer to internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] A test dummy for maintaining the spinal shape of an automobile seat comprises: a positioning rod 1, multiple T-rods 2, multiple dampers 3 and multiple false backs 4, wherein one end of the T-rod 2 is fixedly connected to the positioning rod 1, and the other end of the T-rod 2 is rotatably connected to the damper 3, the damper 3 is fixedly connected to the false back 4, and the damper 3 is also provided with a false back weight loading rod 9; the positioning rod 1 is provided with multiple angle reading panels 5, the number of the angle reading panels 5 is the same as the number of the false backs 4, the false back 4 is provided with an angle indicator 6, the angle indicator 6 intersects with the angle reading panels 5 in spatial position, and the angle indicator 6 can move within the range of the angle reading panels 5 under the action of external force; a weight box 7 is provided at the near-ground end of the positioning rod 1, and the positioning rod 1 and the weight box 7 are connected via a false hip weight loading rod 10.

[0024] The false back 4 is a sheet-like structure, with three or more pieces, a horizontal width of 100mm-250mm, a vertical height of 450-600mm, and a thickness of less than 3mm.

[0025] The horizontal width of the false back 4 is 100 mm.

[0026] The thickness of the three false backs is consistent, and the lateral width can be selected according to different experimental conditions. It can be consistent, two can be consistent, or all three can be inconsistent.

[0027] The false back weight loading rod 9 can be loaded with weights or dumbbells, and the weight and number of the loaded weights are proportional to the horizontal width of the false back.

[0028] The T-shaped rod 2 is hinged to the damper 3, and a rubber gasket is provided at the hinge position.

[0029] The rubber gasket opening enables plug-in installation.

[0030] The present invention increases the universality of the application of this dummy. According to the distribution of human bones and the law of freedom in the theory of motion mechanics, the artificial back is divided into three parts, namely:

[0031] Imitates the sacrum and the first part of the 4th and 5th lumbar vertebrae of the human body;

[0032] Imitating the second part of the 1st to 3rd lumbar vertebrae and the 7th to 12th thoracic vertebrae of the human body;

[0033] Imitating the third part of the 1st to 7th thoracic vertebrae of the human body;

[0034] Each part is designed with weights and graded damping to control the relative angle between the false backs, simulating the shape of a real human spine.

[0035] This design has three performance parameters that characterize the degree of support between the driver's spine and the seat back, namely:

[0036] The amount of support the seat provides to the occupant's waist. Corresponding components: Lumbar support depth angle gauge;

[0037] Lumbar lordosis angle, corresponding component: lumbar angle ruler;

[0038] Thoracic kyphosis angle, corresponding component: thoracic vertebra angle ruler.

[0039] A dummy back weight loading rod 9 is provided on the damper 3 .

[0040] An angle reading panel 5 is provided on the outside of the positioning rod 1, and an angle indicator 6 is provided on the false back 4. In the original state, the angle indicator 6 should point to the origin of the angle reading panel 5. The damper 3 will only move when it bears a certain weight, causing the angle indicator 6 to deviate for the tester to record data.

[0041] The near-ground end of the positioning rod 1 is connected to the weight box 7 through the fake hip weight loading rod 10. The fake hip weight loading rod 10 and the fake back loading rod 9 can use the same disc weight, which is used here to simulate the weight of the buttocks. There are small gram weights in the weight box 7 to fine-tune the position of the dummy. The weights in the weight box 7 mainly control the height of the dummy on the seat.

[0042] refer to Figure 5It is only a schematic diagram. The corresponding angle differences of the angle indicator scales 6 on the two adjacent false backs at the top are respectively called the thoracic kyphosis angle and the lumbar lordosis angle. A waist protrusion ruler is provided on the false back near the ground. One end of the ruler is fixed on the false back and the other end is suspended in the air. When viewed from the side, the scale where the positioning rod and the ruler intersect is called the waist protrusion.

[0043] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will be able to modify the technical solutions described in the foregoing embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A test dummy for maintaining the spinal shape of an automobile seat, characterized in that: include: A positioning rod, a plurality of T-shaped rods, a plurality of dampers and a plurality of false backs, wherein one end of the T-shaped rod is fixedly connected to the positioning rod, the other end of the T-shaped rod is rotatably connected to the damper, the damper is fixedly connected to the false back, and the damper is also provided with a false back weight loading rod; a plurality of angle reading panels are provided on the positioning rod, the number of the angle reading panels is the same as the number of false backs, an angle indicator is provided on the false back, the angle indicator intersects with the angle reading panel in space, and the angle indicator can be driven by the false back within the range of the angle reading panel Inward movement, a weight box is provided at the near-ground end of the positioning rod, and the positioning rod and the weight box are connected through a false hip weight loading rod. The false back is a sheet structure, with more than three, the false back has a horizontal width of 100mm, a vertical height of 450-600mm, a thickness of less than 3mm, and a consistent thickness of the false back. The false back weight loading rod can be loaded with weights, and the weight and quantity of the loaded weights are proportional to the horizontal width of the false back. The T-bar is hinged to the damper, and a rubber gasket is provided at the hinge position. The rubber gasket is open and can be installed in an insertable manner.

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