Safety belt buckle opening force detection device based on image positioning

Abstract

The utility model relates to a safety belt buckle opening force detection device based on image positioning, belongs to the technical field of detection equipment, and particularly relates to a detection device suitable for the opening force of a safety belt buckle. The visual camera is used for identifying the position of the safety belt buckle and the angle where the load should be applied, the manipulator at the tail end of the mechanical arm is controlled to clamp the tail end of the safety belt and apply the load according to the force application angle of the safety belt buckle, and the placing angle of the safety belt and the loading requirement of the safety belt buckle are met. The multiple degrees of freedom of the safety belt buckle mechanical arm can be used for controlling stretching of the safety belt, and continuous adjustment of the load is achieved. And the T-shaped pressing device can ensure that belt buckle pressing actions can be executed on different types of safety belt buckles. According to the utility model, the continuous adjustment of the load can be realized, the load application angle can be accurately identified by means of image identification, belt buckle pressing actions can be executed on different types of safety belt buckles, and the accuracy and stability of opening force detection are ensured.

Description

Technical Field

[0001] This utility model relates to a seat belt buckle opening force detection device based on image positioning, belonging to the technical field of detection equipment, and is particularly suitable for detecting seat belt buckle opening force. Background Technology

[0002] Child safety seats are installed in car seats, and their main function is to ensure that children receive optimal safety protection while the vehicle is in motion, reducing injuries in traffic accidents. The seat belt buckle securely fastens the child to the seat, effectively preventing the child from being thrown out or the seat from slipping off in the event of a collision, sudden braking, or other emergencies.

[0003] Existing testing equipment for seat belt buckles, when performing no-load and load tests, involves manually clamping and tensioning the buckle while simultaneously applying loads. This testing method leads to errors in the buckle tension angle and discontinuous load application, requiring improvements in automation and testing accuracy.

[0004] Therefore, existing seat belt buckle opening force testing devices still have the following shortcomings:

[0005] 1. The buckle opening force detection device cannot adaptively perform buckle pressing actions at multiple angles. For example, patent CN221649775U, "A Seatbelt Insertion Force and Opening Force Detection Device," provides a seatbelt opening force detection device. This device can only perform opening force detection for seatbelt buckles with specific opening methods and cannot adapt to other opening methods, such as pressing, push-pull, and side-push structures.

[0006] 2. Manually applied load-bearing force detection devices cannot achieve continuously adjustable load. For example, patent CN221037964U, "A Detection Device for Buckle Opening Force," provides a buckle opening force testing device. This device requires manual application of load, connecting a weight to the buckle via a safety belt, and therefore cannot achieve continuously adjustable load.

[0007] 3. Automatically applied load-bearing seatbelt buckle opening force detection devices cannot accurately identify the load application angle. For example, patent CN106441833B, "A Buckle Opening Force Detection Machine," provides a buckle opening force testing machine. This device applies a load to the buckle through a fixed load cylinder; however, the load cylinder is in a fixed position and can only perform simple push-pull actions, making it unsuitable for the load application direction of seatbelt buckles with different opening methods. Utility Model Content

[0008] To address the aforementioned problems with existing seatbelt buckle opening force detection devices, this invention provides an image-based seatbelt buckle opening force detection device. This invention utilizes a vision camera to identify the position of the seatbelt buckle and the angle at which the load should be applied. Then, it controls the end effector of a robotic arm to grip the end of the seatbelt and apply a load according to the buckle's force application angle, thus satisfying the seatbelt's placement angle and buckle loading requirements.

[0009] In addition, the robotic arm's multiple degrees of freedom can be used to control the stretching of the seat belt, enabling continuous adjustment of the load. The T-shaped pressing device ensures that it can perform buckle pressing actions on different types of seat belt buckles.

[0010] Compared with existing seat belt buckle opening force detection devices, this invention can achieve continuous adjustment of the load and accurately identify the load application angle through image recognition. It can perform buckle pressing action for different types of seat belt buckles, ensuring the accuracy and stability of opening force detection.

[0011] To achieve the above objectives, this utility model provides a seat belt buckle opening force detection device based on image positioning, including a mounting frame and a clamping platform, robotic arms, an unlocking mechanism, and a motor disposed on the mounting frame; a plurality of robotic arms are fixed to the bottom of the mounting frame, and the clamping platform is located between the plurality of robotic arms;

[0012] The robotic arm includes a rotating device that can rotate on the mounting frame and control the rotation of the entire robotic arm. The end of the robotic arm is provided with a robotic hand for gripping the seat belt and moving it to the angle at which the seat belt buckle load is applied to apply the load, thereby tensioning the seat belt and applying the corresponding load.

[0013] The unlocking mechanism includes a pressure sensor bracket connected to a motor, the pressure sensor bracket is provided with a threaded screw, the threaded screw is connected to a pressure sensor through a pusher slider, and a vision camera assembly is provided on the pressure sensor;

[0014] When the motor is driven to rotate, the pusher slider can reciprocate in the direction of the threaded screw; the vision camera assembly can identify the position of the seat belt buckle and the load application angle, and control the robotic arm at the end of the robotic arm to grip the seat belt and move to the load application angle of the seat belt buckle to apply the load, thereby realizing the placement angle of the seat belt buckle connected to the seat belt, and thus achieving the accuracy of the load application direction.

[0015] Furthermore, a first guide rail is provided on both sides of the mounting frame, and a first slider and a second slider are respectively installed on the first guide rail on both sides; the first guide rail, the first slider and the second slider are all provided with slots, the first guide rail is connected to the first slider and the second slider through the slots, and the first slider and the second slider can move freely on the first guide rail through the slots.

[0016] Furthermore, both the first and second sliders are fitted onto the second guide rail, which allows free movement along with the first and second sliders. The unlocking mechanism moves laterally along the second guide rail via the third slider, and its longitudinal position is changed by the movement of the first and second sliders.

[0017] Furthermore, a third slider is installed on the second guide rail; the third slider is connected to the unlocking mechanism.

[0018] Furthermore, a pressing device is installed at the lower end of the pressure sensor, the pressing device including a push head and an opening component; when the opening component opens the seat belt buckle, the opening force applied by the opening component to the seat belt buckle is fed back to the pressure sensor through the push head, and the pressure sensor can detect the opening force applied to the seat belt buckle.

[0019] Furthermore, the opening component has a T-shaped structure, which can adapt to seat belt buckles with different opening methods. The opening component can perform different unlocking actions on seat belt buckles with different opening methods by moving horizontally and vertically.

[0020] Furthermore, the rotating device is connected to a first motor, which is connected to a connecting rod via a first C-shaped plate. The connecting rod rotates around the first motor via the first C-shaped plate. The connecting rod is connected to a second motor, which is connected to a third motor via a second C-shaped plate. The third motor rotates around the second motor via the second C-shaped plate. The third motor is connected to a fourth motor, which connects to and controls the movement of the robotic arm.

[0021] Furthermore, a shim is installed on one side of the connecting rod, and the second motor is connected to the other side of the connecting rod through the shim.

[0022] Furthermore, the third motor is connected to the fourth motor via a base plate; the robotic arm can use a vision camera assembly to identify the position of the seat belt buckle and the angle of load application, grip the seat belt and tighten it, and can apply a continuously variable load force to the seat belt buckle.

[0023] The beneficial effects of this utility model are:

[0024] (1) The seat belt buckle opening force detection device provided by this utility model uses a vision camera component to take pictures and analyze them in real time during buckle opening force detection. It can realize adaptive multi-angle buckle pressing action and has good adaptability to different types of seat belt buckles. At the same time, it uses a robotic arm and multi-stage motor control to make the various components move in a coordinated manner, reducing the dependence on manual operation, reducing the risk of human intervention, improving the level of automation, and also improving work efficiency. It can also work continuously and maintain its working stability.

[0025] (2) The seat belt buckle opening force detection device provided by this utility model can not only apply a continuously adjustable load force to the seat belt buckle through the linkage of the clamping table, the robotic arm and the vision camera assembly, but also achieve precise positioning of the seat belt buckle by means of image recognition, thereby ensuring that the unlocking process is stable and reliable.

[0026] (3) The safety belt buckle opening force detection device provided by this utility model, through the design of the linkage mechanism of the first and second guide rails and the slider, can realize the precise positioning of the unlocking mechanism in any direction within the installation frame, meet the operation requirements of different types of safety belt buckles, and can perform flexible positioning and multi-angle operation.

[0027] (4) The seat belt buckle opening force detection device provided by this utility model has each component precisely designed and assembled, so that the entire system remains stable during the application of load and unlocking process, and can continuously provide feedback and adjustment, thereby achieving efficient and accurate unlocking control. It not only greatly improves the accuracy and automation of seat belt buckle operation, but also significantly improves the stability and reliability of the system, providing a strong guarantee for the safe use of related equipment. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the unlocking mechanism and pressing device in one embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the robotic arm in one embodiment of the present invention;

[0031] In the diagram: 1. Clamping platform; 2. Unlocking mechanism; 21. Pressure sensor bracket; 22. Threaded screw; 23. Push slider; 3. Motor; 4. Mounting frame; 51. First guide rail; 52. Second guide rail; 61. First slider; 62. Second slider; 7. Pressure sensor; 8. Vision camera assembly; 9. Pressing device; 91. Push head; 92. Opening component; 10. Robotic arm; 1011. Rotating device; 1012. First motor; 1013. First C-shaped plate; 1014. Connecting rod; 1015. Shim; 1016. Second motor; 1017. Second C-shaped plate; 1018. Third motor; 1019. Base plate; 1020. Fourth motor; 1021. Robotic arm. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] like Figure 1-3 As shown, this utility model provides a seat belt buckle opening force detection device based on image positioning. To achieve the above objectives, this utility model provides an efficient, safe and stable technical solution.

[0036] In some embodiments, such as Figure 1 As shown, this utility model provides a seat belt buckle opening force detection device based on image positioning, including a mounting frame 4 and an unlocking mechanism 2 and a motor 3 disposed on the mounting frame 4; the mounting frame 4 is provided with a fixing mechanism for fixing the product, the fixing mechanism includes a clamping platform 1 and a robotic arm 10, wherein two robotic arms 10 are fixed to the bottom of the mounting frame 4, and the clamping platform 1 is located between the two robotic arms 10. The main function of the robotic arm 10 is to identify the position and load application angle of the seat belt buckle with the help of a vision camera component, tighten the seat belt, and apply a continuously variable load force to the seat belt buckle; the clamping platform 1 is used to place the seat belt buckle and is responsible for its precise positioning to ensure the stability of subsequent operations.

[0037] Furthermore, the robotic arm 10 includes a rotating device 1011, which can rotate on the mounting frame 4 and control the rotation of the entire robotic arm 10. The rotating device 1011 can rotate flexibly on the mounting frame, thereby controlling the rotation of the entire robotic arm 10. The design of the rotating device 1011 enables the robotic arm to move flexibly at different angles to adapt to the operation requirements of seat belt buckles at different angles, thereby improving the applicability of the equipment.

[0038] Further, in one embodiment, the aforementioned rotating device 1011 is connected to a first motor 1012. The first motor 1012 is connected to a connecting rod 1014 via a first C-shaped plate 1013, allowing the connecting rod 1014 to rotate around the first motor 1012 with the aid of the first C-shaped plate 1013. Simultaneously, a washer 1015 is installed on one side of the connecting rod 1014, allowing a second motor 1016 to connect to the other side of the connecting rod 1014 via the washer 1015. A second C-shaped plate 1017 is installed on one side of the second motor 1016, connecting the second motor 1016 to a third motor 1018 via the second C-shaped plate 1017. The third motor 1018 then rotates around the second motor 1016 with the aid of the second C-shaped plate 1017, thereby controlling the rotation of the robotic arm 1021. One end of the third motor 1018 is connected to a base plate 1019, which is in turn connected to a fourth motor 1020. The fourth motor 1020 is connected to the robotic arm 1021 through the base plate 1019, thereby precisely controlling the movement of the robotic arm 1021. The robotic arm 1021 uses a vision camera assembly to identify the position of the seat belt buckle and the load application angle, grips the end of the seat belt, and achieves seat belt tension by controlling the displacement of the robotic arm 1021, and applies a continuously variable load force to the seat belt buckle.

[0039] In one embodiment, the unlocking mechanism 2 includes a pressure sensor bracket 21 connected to a motor 3. The pressure sensor bracket 21 is equipped with a threaded screw 22, which is connected to a pressure sensor 7 via a pusher slider 23. When the motor 3 drives the threaded screw 22 to rotate, the pusher slider 23 reciprocates along the threaded screw 22. Since the pusher slider 23 is fixedly connected to the upper end of the pressure sensor 7, the movement of the pusher slider 23 drives the pressure sensor 7 to reciprocate synchronously, thereby ensuring that all components move in a coordinated manner and guaranteeing the stability and efficiency of the overall structure.

[0040] The pressure sensor 7 is equipped with a vision camera assembly 8, which can capture real-time images of the seatbelt buckle's position and use image recognition technology to provide precise guidance for the movement of the robotic arm 10. This guides the robotic arm 10's end effector 1021 to grip the end of the seatbelt and move it to the appropriate angle to apply load to the buckle, tightening it. This allows for the application of continuously variable loads to the seatbelt buckle. This design significantly reduces manual intervention, achieves precise seatbelt positioning, and improves the overall automation level and efficiency of the device.

[0041] exist Figure 1 In the example, the mounting frame 4 is a cubic frame structure. First guide rails 51 are provided on both sides of the mounting frame 4, and first sliders 61 and second sliders 62 are respectively mounted on the left and right sides of the first guide rails 51. The first guide rails 51, first sliders 61, and second sliders 62 all have slots. The first guide rail 51 is connected to the first sliders 61 and 62 through these slots, allowing the first sliders 61 and 62 to move freely on the first guide rail 51. Furthermore, the first sliders 61 and 62 are both fitted onto the second guide rail 52, allowing the second guide rail 52 to move freely along with the first sliders 61 and 62 on the first guide rail 51. The unlocking mechanism 2 moves laterally on the second guide rail 52 via the third slider 63, and the unlocking mechanism 2 changes its longitudinal position through the movement of the first sliders 61 and 62. Further, a third slider 63 is mounted on the second guide rail 52; the third slider 63 is connected to the unlocking mechanism 2.

[0042] Since the third slider 63 is directly linked to the unlocking mechanism 2, its movement can realize the lateral movement of the unlocking mechanism 2, thereby enabling the unlocking mechanism 2 to achieve precise lateral and longitudinal positioning within the mounting frame 4.

[0043] In one embodiment, a pressing device 9 is mounted on the lower end of the pressure sensor 7. The pressing device 9 consists of a push head 91 and an opening component 92. When the opening component 92 performs an unlocking operation on the seat belt buckle, the opening force applied to the seat belt buckle is fed back to the pressure sensor 7 through the push head 91. The pressure sensor 7 can detect the opening force applied to the seat belt buckle.

[0044] Preferably, the opening component 92 is designed in a T-shape to ensure that it can perform an effective unlocking action on different types of seat belt buckles, and can meet the operational requirements of applying opening force to various types of seat belt buckles through horizontal and vertical movement.

[0045] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. An image-based positioning safety belt buckle opening force detection device, characterized by, The mounting rack (4) is provided with a clamping table (1), a mechanical arm (10), a unlocking mechanism (2) and a motor (3); the mechanical arm (10) is fixed to the bottom of the mounting rack (4), and the clamping table (1) is located between the mechanical arms (10); The mechanical arm (10) comprises a rotating device (1011) capable of rotating on the mounting rack (4) and controlling the rotation of the whole mechanical arm (10), and a mechanical hand (1021) arranged at the end of the mechanical arm (10); The unlocking mechanism (2) comprises a pressure sensor support (21) connected with the motor (3), the pressure sensor support (21) is provided with a threaded screw rod (22), the threaded screw rod (22) is connected with a push-up sliding block (23), and a visual camera assembly (8) is arranged on the pressure sensor (7); When the motor (3) is driven to rotate, the push-up sliding block (23) can reciprocate in the direction of the threaded screw rod (22); the visual camera assembly (8) can identify the position of the seat belt buckle and the load application angle, and control the mechanical hand (1021) at the end of the mechanical arm (10) to clamp the seat belt and move to the load application angle of the seat belt buckle to apply load.

2. The seat belt buckle opening force detection device according to claim 1, characterized by, First guide rails (51) are arranged on both sides of the mounting rack (4), and first and second sliding blocks (61) and (62) are arranged on the first guide rails (51) respectively; the first guide rails (51), the first and second sliding blocks (61) and (62) are all provided with clamping grooves, the first guide rails (51) are connected with the first and second sliding blocks (61) and (62) through the clamping grooves, and the first and second sliding blocks (61) and (62) can move freely on the first guide rails (51) through cooperation of the clamping grooves.

3. The seat belt buckle opening force detection apparatus according to claim 2, characterized by The first and second sliding blocks (61) and (62) are matched with a second guide rail (52), and the second guide rail (52) can move with the first and second sliding blocks (61) and (62).

4. The seat belt buckle opening force detection device according to claim 3, characterized by A third sliding block (63) is arranged on the second guide rail (52), and the third sliding block (63) is connected with the unlocking mechanism (2).

5. The seat belt buckle opening force detection device according to claim 4, characterized by A pressing device (9) is arranged at the lower end of the pressure sensor (7), the pressing device (9) comprises a push head (91) and an opening component (92); when the opening component (92) opens the seat belt buckle, the opening force applied by the opening component (92) on the seat belt buckle is fed back to the pressure sensor (7) through the push head (91), and the opening force applied on the seat belt buckle can be detected through the pressure sensor (7).

6. The seat belt buckle opening force detection apparatus according to claim 5, characterized by The opening component (92) is in T-shaped structure, and the opening component (92) can realize the unlocking action on different types of seat belt buckles through horizontal and vertical movements.

7. The seat belt buckle opening force detection apparatus according to claim 6, characterized by The rotating device (1011) is connected with a first motor (1012), the first motor (1012) is connected with a connecting rod (1014) through a first C-shaped plate (1013), the connecting rod (1014) rotates around the first motor (1012) through the first C-shaped plate (1013); the connecting rod (1014) is connected with a second motor (1016), the second motor (1016) is connected with a third motor (1018) through a second C-shaped plate (1017), the third motor (1018) rotates around the second motor (1016) through the second C-shaped plate (1017); the third motor (1018) is connected with a fourth motor (1020), the fourth motor (1020) is connected with and controls the movement of a mechanical arm (1021).

8. The seat belt buckle opening force detection apparatus according to claim 7, characterized by The connecting rod (1014) is provided with a gasket (1015) on one side, and the second motor (1016) is connected with the other side of the connecting rod (1014) through the gasket (1015).

9. The seat belt buckle opening force detection apparatus according to claim 7, characterized by The third motor (1018) is connected with the fourth motor (1020) through a bottom plate (1019); the mechanical arm (1021) can identify the position of a seat belt buckle and the load application angle by means of a visual camera assembly (8).

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