A car seat inspection robot

Abstract

This invention discloses an automotive seat inspection robot, comprising an inspection frame, a control cabinet assembly integrated on one side of the inspection frame, an inspection arm assembly slidably connected to the inspection frame, and a prosthetic buttock connected to the inspection arm assembly. The inspection frame contains an inspection platform for placing the automotive seat, and the prosthetic buttock can contact and press against the automotive seat on the inspection platform. The position of the prosthetic buttock relative to the automotive seat is adjusted by the inspection arm assembly. The inspection robot of this invention uses a gantry frame and a five-axis linkage simulation indenter and prosthetic buttock to simulate the actual use of the seat by the driver and passengers. The drive motors of each axis utilize torque to simulate and accurately detect the force exerted on the automotive seat, and adjust the force values. This device is easy to adjust, occupies a small area, and has simple parameter settings.

Description

Technical Field

[0001] This invention relates to the field of automotive seat inspection technology, and more particularly to an automotive seat inspection robot. Background Technology

[0002] With the rapid development of the automotive industry, the types and number of motor vehicles are increasing year by year, providing people with fast and efficient convenience. At the same time, the safety and reliability of automobiles have become a primary concern for the entire automotive industry. Besides the significant impact of the performance and quality of the chassis, engine, and transmission on vehicle safety, the quality requirements for automotive components are also becoming increasingly stringent. Among these, the car seat, as a crucial component connecting the vehicle body to the driver and passengers, has an extremely important influence on driving safety, functionality, and comfort due to its internal structural strength and sensor reliability. Therefore, automotive component testing is a vital part of ensuring vehicle quality, necessitating a high-performance, accurate automotive seat testing robot. Summary of the Invention

[0003] The purpose of this invention is to provide a car seat inspection robot that fills the market gap in existing automotive seat inspection fixtures, can simulate hip movement during seat inspection, and makes seat inspection data more accurate and the inspection effect more effective.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] The present invention provides a car seat inspection robot, the inspection robot comprising:

[0006] A detection frame, wherein the hollow terrain inside the detection frame forms a detection space for the car seat;

[0007] A control cabinet assembly integrated on one side of the detection frame;

[0008] A detection arm assembly slidably connected to the detection frame; and

[0009] The prosthetic buttock connected to the detection arm assembly;

[0010] The detection frame has a detection platform inside which a car seat is placed, and the artificial buttocks can contact and press the car seat on the detection platform;

[0011] The prosthetic buttocks are adjusted in position relative to the car seat via the detection arm assembly;

[0012] The bottom of the detection frame is fixed with multiple fixing plates, and the bottom of the car seat is supported and positioned by the fixing plates.

[0013] Furthermore, the detection arm assembly includes:

[0014] X-axis slide, the detection arm assembly adjusts the position of the artificial buttock in the X direction along the X direction of the detection frame via the X-axis slide;

[0015] A Y-axis slide, integrated on the X-axis slide, is movable along the Y-axis of the detection frame to adjust the Y-axis position of the artificial buttock; and

[0016] The Z-axis slide is integrated into the Y-axis slide, and the Z-axis slide can drive the artificial buttock to move along the Z-direction of the detection frame;

[0017] The fixing plate is integrated into the detection frame via a fixing plate integrated beam and a fixing plate integrated column. The fixing plate integrated beam is arranged in a direction perpendicular to the X-axis slide table, and the fixing plate integrated column is perpendicular to the fixing plate integrated beam. The fixing plate is fixed to the fixing plate integrated column at the end that mates with the car seat.

[0018] Furthermore, the detection arm assembly also includes:

[0019] An adjustment axis assembly is integrated into the Z-axis slide and the end of the dummy buttock that mates with it;

[0020] The adjustment axis assembly includes an A-axis and a B-axis integrated at the bottom of the A-axis and connected to the artificial buttock;

[0021] The A-axis drives the B-axis and the artificial buttock to rotate around the A-axis to adjust the angle of the artificial buttock relative to the car seat;

[0022] The B-axis can drive the artificial buttocks to rotate around the B-axis.

[0023] Furthermore, the X-axis slide includes:

[0024] An X-axis drive motor is arranged at one end of the detection frame in the X direction;

[0025] The X-axis drive screw is driven to rotate by the X-axis drive motor, and the X-axis drive motor drives the X-axis drive screw to rotate through the transmission wheel and the transmission belt.

[0026] The Y-axis slide is threadedly connected to the X-axis drive screw to move along the X-axis via the X-axis drive motor.

[0027] Furthermore, the Y-axis slide includes:

[0028] Y-axis drive motor;

[0029] The Y-axis drive screw is driven to rotate by the Y-axis drive motor, and the Y-axis drive motor drives the Y-axis drive screw to rotate through the transmission wheel and the transmission belt.

[0030] The Z-axis slide is threadedly connected to the Y-axis drive screw to move along the Y-axis via the Y-axis drive motor.

[0031] Furthermore, the Z-axis slide includes:

[0032] Z-axis drive motor; and

[0033] The Z-axis drive screw is connected to the output end of the Z-axis drive motor;

[0034] The adjusting shaft assembly is threadedly connected to the Z-axis drive screw to move along the Z-axis via the Z-axis drive motor.

[0035] Furthermore, a mounting frame is provided at the end of the B-axis that mates with the artificial buttock;

[0036] The mounting frame is divided into an upper mounting frame and a lower mounting frame;

[0037] A pressure head is installed inside the upper mounting frame, and pressure sensors are installed at both the front and rear ends of the pressure head;

[0038] The lower mounting frame is connected to the upper mounting frame via the pressure head, and the bottom of the lower mounting frame is connected to the artificial buttock.

[0039] The automotive seat inspection robot provided by the present invention, as described above, has the following beneficial effects:

[0040] The detection robot of this invention employs a gantry frame and a five-axis linkage simulation indenter and a simulated buttock to simulate the actual use of the car seat by the driver and passengers. Through the drive motors of each axis, torque is used to simulate and accurately detect the force exerted on the car seat, and the force values ​​can be adjusted. This device is easy to position, occupies a small area, and has simple parameter settings. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0042] Figure 1 A schematic diagram of the structure of an automotive seat inspection robot provided in an embodiment of the present invention. Figure 1 ;

[0043] Figure 2A schematic diagram of the structure of an automotive seat inspection robot provided in an embodiment of the present invention. Figure 2 ;

[0044] Figure 3 A schematic diagram of the structure of an automotive seat inspection robot provided in an embodiment of the present invention. Figure 3 ;

[0045] Figure 4 This is an enlarged view of the structure of the adjustment shaft system assembly of an automotive seat inspection robot provided in an embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram of the structure of the fixing plate of an automotive seat inspection robot provided in an embodiment of the present invention;

[0047] Figure 6 This is a schematic diagram of the spline curve fitting result obtained by an automotive seat inspection robot in an embodiment of the present invention.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1. Detection frame; 2. Control cabinet assembly; 3. X-axis slide; 4. Y-axis slide; 5. Z-axis slide; 6. Dummy slide; 7. Detection platform; 8. Adjustment axis assembly; 10. Fixing plate;

[0050] 301. X-axis drive motor; 302. X-axis drive screw;

[0051] 401. Y-axis drive motor; 402. Y-axis drive screw;

[0052] 501. Z-axis drive motor; 502. Z-axis drive screw;

[0053] 801, A-axis; 802, B-axis;

[0054] 901. Upper mounting frame; 902. Lower mounting frame; 903. Pressure head; 904. Pressure sensor;

[0055] 1001. Fixed plate integrated crossbeam; 1002. Fixed plate integrated column. Detailed Implementation

[0056] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0057] See Figures 1 to 5 As shown;

[0058] This embodiment provides a car seat inspection robot, which includes:

[0059] The detection frame 1 has a hollow interior that forms the inspection space for the car seat.

[0060] The control cabinet assembly is integrated on one side of the detection frame 1;

[0061] The detection arm assembly is slidably connected to the detection frame 1; and

[0062] The prosthetic buttock 6 is connected to the detection arm assembly;

[0063] The detection frame 1 has a detection platform 7 inside which a car seat is placed, and the fake buttocks 6 can contact and press the car seat on the detection platform 7;

[0064] The artificial buttock 6 adjusts its position relative to the car seat via a detection arm assembly;

[0065] Multiple fixing plates 10 are fixed to the bottom of the detection frame 1. The bottom of the car seat is supported and positioned by the fixing plates 10.

[0066] Specifically, this embodiment discloses an automotive seat inspection robot, which has an inspection frame 1 as its main body. An inspection arm assembly and a prosthetic buttock 6 are integrated on the inspection frame 1, and the operation of the inspection arm assembly is controlled by a control cabinet assembly 2. The inspection arm assembly of this embodiment can adjust the position and angle of the prosthetic buttock 6 relative to the automotive seat according to the inspection location, and is equipped with an inspection platform 7 capable of holding the automotive seat.

[0067] Preferably, the detection arm assembly in this embodiment includes:

[0068] X-axis slide 3, the detection arm assembly adjusts the position of the fake buttock 6 in the X direction along the X direction of the detection frame 1 via the X-axis slide 3;

[0069] Y-axis slide 4 is integrated on X-axis slide 3, and Y-axis slide 4 can move along the Y-axis of detection frame 1 to adjust the Y-axis position of the artificial buttock 6; and

[0070] Z-axis slide 5 is integrated into Y-axis slide 4, and Z-axis slide 5 can drive the artificial buttock 6 to move along the Z direction of the detection frame 1.

[0071] The fixing plate 10 is integrated into the detection frame 1 via the fixing plate integrated crossbeam 1001 and the fixing plate integrated column 1002. The fixing plate integrated crossbeam 1001 is arranged in a direction perpendicular to the X-axis slide table 3, and the fixing plate integrated column 1002 is perpendicular to the fixing plate integrated crossbeam 1001. The fixing plate 10 is fixed to the fixing plate integrated column 1002 at the end that mates with the car seat.

[0072] The detection arm assembly in this embodiment is designed with the aforementioned X-axis slide 3, Y-axis slide 4, and Z-axis slide 5 to allow for multi-angle adjustment of the artificial buttock 6. The X-axis slide 3, Y-axis slide 4, and Z-axis slide 5 are used to adjust the X, Y, and Z positions of the artificial buttock 6 accordingly.

[0073] In addition, to more realistically simulate the pressure of the driver and passengers on the car seat, it is not only necessary to adjust the position of the artificial buttock 6 using the X-axis slide 3, Y-axis slide 4, and Z-axis slide 5 mentioned above, but also to realistically simulate the state of the artificial buttock 6 under different seats and even rotating and crushing the car seat. Therefore, the detection arm assembly in this embodiment also includes:

[0074] An adjustment axis assembly 8 is integrated into one end of the Z-axis slide 5 and the pseudo-butt 6;

[0075] The adjustment axis assembly 8 includes an A-axis 801 and a B-axis 802 integrated at the bottom of the A-axis 801 and connected to the false buttock 6;

[0076] A-axis 801 drives B-axis 802 and the artificial buttock 6 to rotate around A-axis 801 to adjust the angle of the artificial buttock 6 relative to the car seat;

[0077] B-axis 802 can drive the artificial buttocks 6 to rotate around B-axis 802.

[0078] The following embodiments are only one example of a structure that can achieve XYZ direction adjustment. It should be noted that there are many structures in the mechanical field that can achieve XYZ direction adjustment. Therefore, this application is not limited to the following structure to achieve XYZ direction adjustment of the fake buttock 6.

[0079] Preferably, the X-axis slide 3 in this embodiment includes:

[0080] An X-axis drive motor 301 is arranged at one end of the detection frame 1 in the X direction;

[0081] The X-axis drive screw 302 is driven to rotate by the X-axis drive motor 301, and the X-axis drive motor 301 drives the X-axis drive screw 302 to rotate through the transmission wheel and the transmission belt.

[0082] The Y-axis slide 4 is threadedly connected to the X-axis drive screw 302 to move along the X-axis via the X-axis drive motor 301.

[0083] Secondly, based on the structure of the X-axis slide 3, the Y-axis slide 4 in this embodiment includes:

[0084] Y-axis drive motor 401;

[0085] The Y-axis drive screw 402 is driven to rotate by the Y-axis drive motor 401, and the Y-axis drive motor 401 drives the Y-axis drive screw 402 to rotate through the transmission wheel and the transmission belt.

[0086] The Z-axis slide 5 is threadedly connected to the Y-axis drive screw 402 to move along the Y-axis via the Y-axis drive motor 401.

[0087] Finally, based on the structures of the X-axis slide 3 and Y-axis slide 4 described above, the Z-axis slide 5 in this embodiment includes:

[0088] Z-axis drive motor 501; and

[0089] Z-axis drive screw 502 connected to the output end of Z-axis drive motor 501;

[0090] Adjust the threaded connection between the shaft assembly 8 and the Z-axis drive screw 502 to drive movement along the Z-axis via the Z-axis drive motor 501.

[0091] In this embodiment, the X-axis slide 3 includes an X-axis slide rail, and an X-axis drive motor 301 is installed on one side (X-axis end) of the upper end of the detection frame 1. The motor is a servo motor. The X-axis drive motor 301 drives the X-axis drive screw 302 to rotate through a synchronous belt mechanism. Since the Y-axis slide 4 is threadedly connected to the X-axis drive screw 302, the rotational motion is converted into linear motion in the X-axis direction of the Y-axis slide 4 to adjust the X-axis position of the lower fake buttock 6.

[0092] Similarly, the Y-axis slide 4 drives the Y-axis drive screw 402 to rotate via the Y-axis drive motor 401, thereby driving the Z-axis slide 5 to move along the Y-axis. The Z-axis slide 5, in turn, drives the Z-axis drive screw 502 to rotate via the Z-axis drive motor 501, thereby driving the lower adjustment shaft assembly 8 and the dummy hip 6 to move along the Z-axis.

[0093] In addition, in order to further simulate the pressure exerted on the car seat by the driver and passengers, this embodiment designs an adjustment shaft system assembly 8 consisting of A-axis 801 and B-axis 802. The rotation of A-axis 801 can drive B-axis 802 and the lower fake buttocks 6 to rotate around A-axis 801 to adjust the tilt angle in that direction. Similarly, the rotation of B-axis 802 drives the lower fake buttocks 6 to rotate to adjust the relative angle with the car seat.

[0094] In order to integrate the pressure head 903 and the artificial buttock 6, the B-axis 802 of this embodiment is provided with a mounting frame at the end that mates with the artificial buttock 6.

[0095] The mounting frame in this embodiment is divided into an upper mounting frame 901 and a lower mounting frame 902;

[0096] A pressure head 903 is installed inside the upper mounting frame 901, and pressure sensors 904 are installed at both the front and rear ends of the pressure head 903.

[0097] The lower mounting frame 902 is connected to the upper mounting frame 901 via the pressure head 903, and the bottom of the lower mounting frame 902 is connected to the fake buttock 6.

[0098] First, the upper mounting frame 901 and the B-axis 802 are assembled and fixed with bolts. Then, a pressure head 903 is integrated between the upper mounting frame 901 and the lower mounting frame 902. In this embodiment, pressure sensors 904 are provided at both the front and rear of the pressure head 903. The lower dummy buttock 6 is installed using the pressure head 903 and the lower mounting frame 902. This is combined with the detection arm assembly above to drive the dummy buttock 6 to clamp from different positions to detect the car seat. The pressure sensors detect the holding force and transmit the mechanical data to the computer of the control cabinet assembly. The analysis results are then calculated and analyzed.

[0099] During testing, the product to be tested is programmed and stored in the human-machine interface according to the shape, size, function and testing requirements of the car seat. The programmed program is then sent to the control system. The corresponding driver is called through the function buttons in the human-machine interface of the control panel. The controller sends drive commands to each axis driver according to the instructions and monitors whether the running position and torque application meet the set requirements through sensors. If the requirements are not met, the command continues to be executed; if the requirements are met, the operation stops.

[0100] Based on the above theoretical design, the robot was actually assembled and debugged. The car seat to be tested was placed inside the gantry of the testing platform assembly. By adjusting the fixing clamps at the bottom of the platform to match the actual assembly point of the seat in the car, the seat was fixed. Pressure and torque were applied to the seat using a simulated humanoid buttock backrest model at the end of the testing arm. When the buttocks moved during the simulation, the X and Y axes were linked to position it at the detection location, while the Z axis was in a fixed and torsional mode. When the backrest moved during the simulation, the X and Z axes were linked, while the Y axis was in a fixed and torsional mode. Simultaneously, pressure sensors 904 were installed on the simulated buttock backrest. During the experiment, the detected force values ​​were transmitted and recorded via PLC, and finally, the data was recorded and a force curve was plotted on the control panel interactive screen.

[0101] Definition of B-spline: The accuracy evaluation of the automotive seat inspection robot in this embodiment is based on the B-spline curve fitting method. B-spline curve fitting is a commonly used mathematical analysis method in engineering, primarily used to compare the measured data of the inspection equipment with its theoretical data. By comparing the curve fitting results, the inspection accuracy of the equipment is evaluated. Among various spline curve fitting methods, B-spline curves possess excellent approximation capabilities and local modification properties, allowing for flexible representation of various curves and surfaces, thus finding wide application in numerous engineering fields.

[0102] B-spline functions can typically be expressed as:

[0103]

[0104] In the formula, It is the ordinate of the control node of the B-spline curve; The basis functions of a spline curve are defined on a sequence of nonnegative, non-decreasing parameters. Segmentation on the determined interval The degree of the polynomial is taken as 3 in this paper; The definition is as follows:

[0105]

[0106] Calculation of non-uniform B-spline interpolation:

[0107] Using an iterative format (see Liu Xiaoyan, Deng Chongyang. Jacobi-PIA Algorithm for Non-Uniform Cubic B-Spline Interpolation [J]. Journal of Computer-Aided Design & Graphics, 2015, 27(03):485-491):

[0108]

[0109] Table 1. Inspection data results of the car seat inspection robot

[0110]

[0111] Substituting the data from Table 1 into the formula obtained through the above iterative format yields the spline curve fitting result. (See table below) Figure 5 As shown.

[0112] This embodiment detects that the arm assembly can realistically simulate the wriggling motion of a human buttock when it sits in a car seat.

[0113] The automotive seat inspection robot provided by the present invention, as described above, has the following beneficial effects:

[0114] The detection robot of this invention employs a gantry frame and a five-axis linkage simulation pressure head 903 and a fake buttock 6 to simulate the actual use of the car seat by the driver and passengers. Through the drive motors of each axis system, torque is used to simulate and accurately detect the force exerted on the car seat, and the force values ​​can be adjusted. This device is easy to adjust, occupies a small area, and has simple parameter settings.

[0115] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A car seat inspection robot, characterized in that, The inspection robot includes: The detection frame (1) has a hollow interior that forms a car seat detection space. The control cabinet assembly (2) is integrated on one side of the detection frame (1); The detection arm assembly is slidably connected to the detection frame (1); and The fake buttock (6) is connected to the detection arm assembly. The detection frame (1) has a detection platform (7) for placing a car seat inside, and the fake buttock (6) can contact and press the car seat on the detection platform (7); The artificial buttock (6) is adjusted in position relative to the car seat via the detection arm assembly; The bottom of the detection frame (1) is fixed with multiple fixing plates (10), and the bottom of the car seat is supported and positioned by the fixing plates (10); The detection arm assembly includes: X-axis slide (3), the detection arm assembly adjusts the position of the fake buttock (6) in the X direction along the X direction of the detection frame (1) via the X-axis slide (3); Y-axis slide (4), the Y-axis slide (4) is integrated on the X-axis slide (3), and the Y-axis slide (4) can move along the Y direction of the detection frame (1) to adjust the Y-position of the artificial buttock (6); and Z-axis slide (5), the Z-axis slide (5) is integrated into the Y-axis slide (4), and the Z-axis slide (5) can drive the artificial buttock (6) to move along the Z direction of the detection frame (1); The fixing plate (10) is integrated into the detection frame (1) through the fixing plate integrated crossbeam (1001) and the fixing plate integrated column (1002). The fixing plate integrated crossbeam (1001) is arranged in a direction perpendicular to the X-axis slide (3). The fixing plate integrated column (1002) is perpendicular to the fixing plate integrated crossbeam (1001). The fixing plate (10) is fixed to the fixing plate integrated column (1002) at the end that cooperates with the car seat. The detection arm assembly also includes: An adjustment shaft assembly (8) is integrated at one end of the Z-axis slide (5) and the fake buttock (6); The adjustment axis assembly (8) includes an A-axis (801) and a B-axis (802) integrated at the bottom of the A-axis (801) and connected to the artificial buttock (6); The A-axis (801) drives the B-axis (802) and the artificial buttock (6) to rotate around the A-axis (801) to adjust the angle of the artificial buttock (6) relative to the car seat; The B-axis (802) can drive the artificial buttock (6) to rotate around the B-axis (802).

2. The automotive seat inspection robot according to claim 1, characterized in that, The X-axis slide (3) includes: An X-axis drive motor (301) is arranged at one X-axis end of the detection frame (1). The X-axis drive screw (302) is driven to rotate by the X-axis drive motor (301), and the X-axis drive motor (301) drives the X-axis drive screw (302) to rotate through the transmission wheel and the transmission belt; The Y-axis slide (4) is threadedly connected to the X-axis drive screw (302) to be driven to move along the X-axis by the X-axis drive motor (301).

3. The automotive seat inspection robot according to claim 2, characterized in that, The Y-axis slide (4) includes: Y-axis drive motor (401); The Y-axis drive screw (402) is driven to rotate by the Y-axis drive motor (401), and the Y-axis drive motor (401) drives the Y-axis drive screw (402) to rotate through the transmission wheel and the transmission belt; The Z-axis slide (5) is threadedly connected to the Y-axis drive screw (402) to be driven to move along the Y-axis by the Y-axis drive motor (401).

4. The automotive seat inspection robot according to claim 3, characterized in that, The Z-axis slide (5) includes: Z-axis drive motor (501); and A Z-axis drive screw (502) is connected to the output end of the Z-axis drive motor (501). The adjusting shaft assembly (8) is threadedly connected to the Z-axis drive screw (502) to be driven to move along the Z-axis by the Z-axis drive motor (501).

5. The automotive seat inspection robot according to claim 1, characterized in that, The B-axis (802) has a mounting frame at one end that mates with the artificial buttock (6); The mounting frame is divided into an upper mounting frame (901) and a lower mounting frame (902). A pressure head (903) is installed inside the upper mounting frame (901), and pressure sensors (904) are installed at both the front and rear ends of the pressure head (903). The lower mounting frame (902) is connected to the upper mounting frame (901) via the pressure head (903), and the bottom of the lower mounting frame (902) is connected to the fake buttock (6).

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