Device and method for testing opening of automobile door after side collision of automobile

Abstract

The invention discloses a device and method for testing the opening of an automobile door after the side collision of an automobile, and the device comprises a main body supporting frame which is sequentially provided with a position-adjustable tension execution mechanism adjustment seat and an upper part supporting point adjustment seat from the top to the bottom. The upper supporting point adjusting seat is transversely connected with an upper supporting point adjusting rod extending towards a tested vehicle, the front end of the upper supporting point adjusting rod is provided with at least one upper suction supporting piece used for being connected with the tested vehicle, and one side of the tension executing mechanism adjusting seat is rotationally connected with a connecting rod. The first end of the connecting rod is movably connected with a suction supporting part used for being connected with a tested vehicle, and the second end of the connecting rod is movably connected with a tension executing mechanism and a tension sensor. The problems that an existing manual pulling detection mode cannot meet vehicle bodies made of different materials, a vehicle door structure after collision may be damaged, and the fairness and accuracy of a detection result are affected are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile detection, and in particular to a device and method for testing the opening of a door after a side collision of an automobile. Background Art

[0002] At present, GB 20071-2025 "Regulations on Occupant Protection in Side Impacts of Motor Vehicles", "ECE R95 Uniform Provisions Concerning the Certification of Vehicles for Occupant Protection in Side Impacts", and "ECE R135 Uniform Provisions Concerning the Approval of Motor Vehicles for Side Pole Impacts" clearly stipulate that a lateral force of 400N must be applied to the side of the vehicle near the door handle after a collision, and the door must be checked to see if it is open.

[0003] According to the current testing methods of testing agencies, they generally use hook-type equipment to directly use the door gap or directly damage the door and window frame and then apply ropes, etc., and use handheld dynamometers to manually pull to detect whether the car door is open. This method has many disadvantages. It is easy to use too much force, resulting in excessive pulling force, or damage the car door, making the detection method questionable. Moreover, after the car body is hit by the side impact trolley, the door on the impacted side is deformed and squeezed, and the door gap is also squeezed and deformed. There is no effective means to reach into the door gap, making detection difficult. In addition, due to the variety of vehicle body materials, including iron, plastic and aluminum, conventional testing methods are difficult to meet the fixing requirements of car bodies of different materials. At the same time, the existing methods may cause damage to the door structure after the collision during the detection process, affecting the fairness and accuracy of the test results. Therefore, a highly versatile testing device that can accurately control the pulling force is needed to meet the above testing requirements. Summary of the Invention

[0004] The present invention provides a vehicle door opening test device and test method after a side collision of a vehicle, which can solve the problems that the existing human-pulling detection method cannot meet the requirements of vehicle bodies of different materials, may cause damage to the door structure after the collision, and affect the fairness and accuracy of the test results.

[0005] To achieve the above-mentioned objectives, in the first aspect, the present invention provides the following technical solutions: a vehicle door opening test device after a side collision, comprising a main support frame, on which a tension actuator adjustment seat and an upper support point adjustment seat with adjustable positions are sequentially installed from top to bottom, the upper support point adjustment seat is laterally connected with an upper support point adjustment rod extending toward the vehicle under test, the front end of the upper support point adjustment rod is equipped with at least one upper suction support member for connecting to the vehicle under test, one side of the tension actuator adjustment seat is rotatably connected with a connecting rod, the first end of the connecting rod is movably connected with a suction support member for connecting to the vehicle under test, the second end of the connecting rod is movably connected with a tension actuator, and the tension actuator comprises a base plate, a tension generating assembly arranged on the base plate and a tension connecting member extending toward the vehicle under test. Joint, a tension sensor is connected between the tension generating component and the tension connecting head, and a control host is also installed on the main support frame. The control host is electrically connected to the tension sensor, and different models of tested vehicles can be adapted by setting an upper suction support member and a suction support member whose position can be adjusted. The tension actuator can apply tension to the tension sensor, and convert the tension on the door of the tested vehicle into an actual tension value and display it on the control host, so as to realize precise control of the tension of the door of the tested vehicle. The entire detection process is only performed in the area near the door handle, and the installation, detection and disassembly processes of the detection device will not cause damage to the structure of the door after the vehicle collision test, and will not affect the deformation structure of the door and the original collision area structure, thereby ensuring the fairness and objectivity of the detection results and being able to truly reflect the actual situation of the door after the collision.

[0006] Preferably, a suction piece is installed at the front end of the suction support component, and the suction piece and the upper suction support component are electromagnetic suction cups or vacuum suction cups. By replacing the suction piece and the upper suction support component, the vehicle body materials of different materials can be adapted.

[0007] Preferably, the upper suction support members are arranged in multiple numbers side by side, and are movably connected to the front end of the upper support point adjustment rod through a rotating arm. The multiple upper suction support members can be adsorbed and fixed to the vehicle body at the same time, thereby improving the connection strength between the entire main support frame and the vehicle body.

[0008] Preferably, the tension connector includes a first hook connected to the tension sensor and a second hook connected to the door of the vehicle being tested. The first hook and the second hook can be hooked and coupled with each other. The structure of the first hook and the second hook enables the tension sensor and the door of the vehicle being tested to be quickly connected and disassembled, thereby improving adaptability.

[0009] Preferably, the tension generating assembly includes a transverse screw arranged toward the vehicle to be tested and a nut block threadedly mounted on the transverse screw, one end of the tension sensor is connected to the nut block, and one axial end of the transverse screw is connected to a driven bevel gear, and one side of the driven bevel gear is engaged with an active bevel gear driven by a motor, and the motor is electrically connected to the control host, and the output control of the tension of the tension actuator is controlled by setting the motor. The operation of the motor can be controlled by the control host, and it can automatically stop working after the tension value is reached, thereby ensuring the accuracy and reliability of the tension detection and meeting the requirements of the detection regulations for detection accuracy.

[0010] Preferably, the tension generating assembly includes a transverse screw rod arranged toward the vehicle under test and a nut block threadedly mounted on the transverse screw rod. One end of the tension sensor is connected to the nut block, and one axial end of the transverse screw rod is connected to a handwheel. The handwheel facilitates the operator to sense changes in tension in real time, and can achieve changes in the door of the vehicle under test while slowly applying tension. The operation is also relatively simple.

[0011] Preferably, the control host includes a device control switch and a tension display. By setting the device control switch, the detection device can be quickly stopped to prevent excessive tension from damaging the vehicle being tested or the test device.

[0012] Preferably, a plurality of adjustable supporting feet are installed at the bottom of the main support frame, and the levelness and height of the detection device can be adjusted by adjusting the adjustable supporting feet.

[0013] In a second aspect, a method for detecting the door opening after a side collision of a vehicle according to the first aspect comprises the following steps: S1. Place the main support frame on one side of the door of the vehicle under test after the side impact test. Adjust the height of the upper support point adjustment seat according to the height of the vehicle, with the upper suction support member on the vehicle body. S2. After the device is fixed, adjust the tension actuator adjustment seat to the height of the door handle, and preliminarily compare whether the detection position is appropriate. After confirming that the detection position can be covered by the tension actuator, fix the upper and lower positions of the tension actuator adjustment seat; S3. Adjust the tension connector to the vicinity of the detection point of the vehicle to be tested, connect it to the detection point of the vehicle, and complete the equipment adjustment preparation; S4. After the equipment is fixed and connected to the detection point, the control host is turned on and the tension generating component is started. The motor of the tension generating component starts to rotate or the hand wheel is manually driven to rotate, driving the nut block and the tension sensor to move backward. The tension sensor simultaneously drives the tension connector to move backward. At this time, the equipment tension acts on the door detection point. The real-time tension data detected by the tension sensor is synchronously displayed on the control host. During this process, observe whether the door opens abnormally and whether there is any abnormality in the equipment. S5. Under normal testing conditions, when the tension reaches the specified value, the control host sends a stop signal to stop the motor, or the operator manually stops turning the handwheel after seeing the control host send a stop signal. The entire device maintains the specified tension s, observes whether the door is opened, and records the test results. S6. After recording the test results, the operating motor starts to rotate in the reverse direction or the operator reverses the handwheel, and the tension actuator releases the tension until the tension connector can be separated from the door fixing point, and then the testing equipment is disassembled and removed.

[0014] Preferably, during the observation process in step S5, a high-definition camera is used to photograph the vehicle door to record the initial state of the vehicle door and any possible opening process. If the door is open, record the degree of opening, direction of opening and other information in detail. The degree of opening is determined by measuring the angle of the door opening or the width of the gap. If the door is not open, record that the door is closed and check whether there is any abnormal deformation or looseness around the door. If so, make a detailed record. Do not touch the door or the test device during the entire observation process to ensure the authenticity and objectivity of the test results.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By setting an upper suction support and a suction support component with adjustable position, different models of tested vehicles can be adapted. The tension actuator can apply tension to the tension sensor, and convert the tension on the door of the tested vehicle into an actual tension value and display it on the control host. It is simple and intuitive, and can achieve precise control of the tension of the door of the tested vehicle. The entire detection process is only carried out in the area near the door handle, and the installation, detection and disassembly processes of the detection device will not cause damage to the structure of the door after the vehicle collision test, and will not affect the deformation structure of the door and the original collision area structure, thereby ensuring the fairness and objectivity of the detection results, and being able to truly reflect the actual situation of the door after the collision, greatly improving the efficiency of the detection work and reducing the workload of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a first-view stereoscopic structural diagram of the present invention; Figure 2 This is a second perspective three-dimensional structural diagram of the present invention; Figure 3 It is a three-dimensional structural diagram of the tension actuator of the present invention; Figure 4 This is a side structural diagram of the present invention in use; Figure 5 A three-dimensional diagram of the present invention in use; Figure 6 For the present invention Figure 5 A magnified structure diagram of the .

[0017] Reference numerals: 1. Main support frame, 11. Suction support component, 12. Suction member, 13. Second hook, 14. Tension actuator adjustment seat, 2. Control host, 21. Equipment control switch, 22. Tension display, 3. Adjustable support foot, 4. Tension actuator, 41. Base plate, 42. Tension sensor, 43. Tension connector, 5. Tension generating assembly, 51. Transverse screw rod, 52. Driven umbrella gear, 53. Active umbrella gear, 54. Motor, 55. Handwheel, 6. Connecting rod, 7. Upper support point adjustment seat, 8. Upper support point adjustment rod, 9. Rotating arm, 10. Upper suction support. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] like Figure 1-6As shown, the present invention is provided to solve the problem that the existing human pulling detection method cannot meet the needs of vehicle bodies of different materials, may cause damage to the door structure after collision, and affect the fairness and accuracy of the detection results. The present invention provides the following technical solutions: A vehicle door opening test device after a side collision of an automobile, comprising a main support frame 1, on which a tension actuator adjustment seat 14 and an upper support point adjustment seat 7 with adjustable positions are installed from top to bottom, and the upper support point adjustment seat 7 is laterally connected to an upper support point adjustment rod 8 extending toward the vehicle under test, and the front end of the upper support point adjustment rod 8 is installed with at least one upper suction support member 10 for connecting to the vehicle under test, one side of the tension actuator adjustment seat 14 is rotatably connected to a connecting rod 6, a first end of the connecting rod 6 is movably connected to a suction support member 11 for connecting to the vehicle under test, and a second end of the connecting rod 6 is movably connected to a tension actuator 4, and the tension actuator 4 includes a base plate 4 1. A tension generating component 5 is provided on the base plate 41 and a tension connecting head 43 extending toward the vehicle under test. A tension sensor 42 is connected between the tension generating component 5 and the tension connecting head 43. A control host 2 is also installed on the main support frame 1. The control host 2 is electrically connected to the tension sensor 42. By setting an upper suction support member 10 and a suction support member 11 that can be adjusted in position, it can be adapted to different models of vehicles under test. The tension actuator 4 can apply tension to the tension sensor 42, and convert the tension on the door of the vehicle under test into an actual tension value and display it on the control host 2, so as to achieve precise control of the tension of the door of the vehicle under test. The entire detection process is only performed in the area near the door handle, and the installation, detection and disassembly processes of the detection device will not cause damage to the structure of the door after the vehicle collision test, and will not affect the deformation structure of the door and the original collision area structure, thereby ensuring the fairness and objectivity of the detection results and being able to truly reflect the actual situation of the door after the collision.

[0020] Specifically, the main support frame 1 includes a base with multiple legs and a column installed on the upper side of the base. The base and the column can be made of tensile rigid profiles, and the overall height is about 1.8 mm. The tension actuator adjustment seat 14 and the upper support point adjustment seat 7 can be raised and lowered along the column of the main support frame 1. The tension actuator adjustment seat 14 and the upper support point adjustment seat 7 both include a frame-shaped seat matching the shape of the column and a locking nut installed on the side wall of the frame-shaped seat. The frame-shaped seat can be raised and lowered along the column, and can be locked by rotating the locking nut after the adjustment is completed.

[0021] Among them, the upper suction support part 10 is used to be connected to the door frame at the top of the side door of the vehicle under test, and the suction support part 11 is connected to the rear door. The function of the suction support part 11 is to pre-position the tension actuator 4. The middle part of the connecting rod 6 is rotatably connected to the tension actuator adjustment seat 14. When the suction support part 11 extends forward, the tension actuator 4 moves backward, so the horizontal position of the suction support part 11 and the tension actuator 4 is dynamically adjusted to adapt to the relatively large changes in the shape of the front and rear doors of the vehicle under test after the side collision test. Therefore, when the suction support part 11 is connected to the rear door, it is only necessary to adjust the position of the tension connector 43 or the tension sensor 42, which can improve the efficiency of the preparation work before the test.

[0022] The tension sensor 42 is an S-type tension sensor with a measuring range of 0-1000N, an accuracy of 0.1 level, a response time of ≤10ms, and communicates with the control host 2 via RS485. The data refresh frequency is 10Hz. The front end suction member 12 of the suction support component 11 is a single suction cup design, which is compatible with the upper suction support component 10. It is connected to the connecting rod 6 through a ball joint structure and can adapt to a tilt angle of the door surface = ±15°.

[0023] Among them, a suction piece 12 is installed at the front end of the suction support component 11. The suction piece 12 and the upper suction support component 10 are electromagnetic suction cups or vacuum suction cups. By replacing the suction piece 12 and the upper suction support component 10, they can be adapted to car body materials of different materials.

[0024] Specifically, before conducting a door opening test on a vehicle after a collision, the inspector uses a combination of appearance observation and simple physical tests to determine the material of the vehicle body. For an iron vehicle body, a magnetic test pen can be used for testing. If the test pen is adsorbed on the vehicle body, it can be preliminarily determined to be an iron vehicle body; for a plastic vehicle body, the glossiness, texture, and whether there are obvious plastic markings on the vehicle body surface can be observed for judgment; for an aluminum vehicle body, a magnetic test pen can be used for judgment. If it is an iron vehicle body, the suction member 12 and the upper suction support member 10 use electromagnetic suction cups. The electromagnetic suction cups generate magnetic attraction when powered on and adsorb to the vehicle body. When the power is off, the magnetic attraction disappears and the vehicle body falls off by itself. If the vehicle body is made of plastic or aluminum, the suction member 12 and the upper suction support member 10 use vacuum suction cups. The vacuum suction cups are connected to an external negative pressure air source. When the negative pressure air source is working, a vacuum space can be formed between the vacuum suction cup and the vehicle body to achieve connection with the vehicle body. At the same time, the suction member 12 and the upper suction support member 10 are both installed using a quick-release structure, such as a screw-nut connection, or a snap-on clamping structure, etc., to facilitate replacement of different types of suction cups.

[0025] The electromagnetic suction cup uses a 12V DC electromagnetic suction method to firmly attach to the door handle. After attachment, use a tensile tester to test the magnetic attachment point to ensure that the adhesion meets the test requirements. If the adhesion is insufficient, adjust the position of the magnetic attachment point or check whether the electromagnetic system is working properly.

[0026] For the vacuum cup, start the 12V DC vacuum pump and position the cup near the door handle. After attachment, check the cup's fixed point for accuracy and the proper angle for tension connector 43 to facilitate subsequent connection to tension sensor 42. Also, inspect the cup's seal to ensure stable attachment.

[0027] Therefore, the technical solution in this embodiment can adapt to a variety of vehicle body materials such as iron, plastic and aluminum, solves the fixation problem when detecting vehicle bodies of different materials, and greatly improves the versatility of the detection method.

[0028] In addition, if Figure 1 As shown, the upper suction support members 10 are arranged in multiple numbers side by side, and are movably connected to the front end of the upper support point adjustment rod 8 through a rotating arm 9. The multiple upper suction support members 10 can be adsorbed and fixed to the vehicle body at the same time, thereby improving the connection strength between the entire main support frame 1 and the vehicle body. The rotating arm 9 is arranged obliquely downward and can match the top of the side door frame of the vehicle being tested.

[0029] In this embodiment, the tension connector 43 includes a first hook connected to the tension sensor 42 and a second hook 13 connected to the door of the vehicle being tested. The first and second hooks 13 can be hooked and coupled to each other. The structure of the first and second hooks 13 allows for quick connection and removal between the tension sensor 42 and the door of the vehicle being tested, improving compatibility. During the connection process, ensure that the openings of the first and second hooks 13 are oriented correctly to avoid loose connections. After connection, gently shake the tension sensor 42 to check for a secure connection without any looseness or shaking. Also, check that the data cable of the tension sensor 42 is properly connected to avoid data transmission failures during the test process.

[0030] In this embodiment, the control host 2 includes a device control switch 21 and a tension display 22. By setting the device control switch 21, the detection device can be quickly stopped to prevent excessive tension from damaging the vehicle being tested or the test device.

[0031] In this embodiment, as the first embodiment of the tension generating component 5, as shown in FIG. Figure 1-4As shown, the tension generating assembly 5 includes a transverse screw rod 51 positioned toward the vehicle being tested and a nut block 44 threadedly mounted on the transverse screw rod 51. One end of the tension sensor 42 is connected to the nut block 44. A driven bevel gear 52 is connected to one axial end of the transverse screw rod 51. A driving bevel gear 53 driven by a motor 54 is engaged on one side of the driven bevel gear 52. The motor 54 is electrically connected to the control host 2. The motor 54 controls the output of the tension of the tension actuator 4. The operation of the motor 54 can be controlled by the control host 2. When the tension value is reached, the motor 54 automatically stops, ensuring the accuracy and reliability of the tension detection and meeting the accuracy requirements of the detection regulations. During use, the device control switch 21 on the control host 2 is pressed, sending a start signal to the motor 54. The motor 54 drives the driving bevel gear 53 to rotate through the elastic coupling, driving the transverse screw rod 51 to rotate. The rotation of the transverse screw rod 51 causes the tension sensor 42 to move backward in the lateral direction, thereby applying tension to the area near the door handle. At the same time, observe the initial reading of the tension display 22 to ensure that it is near zero. If the initial reading has a large deviation, check whether the tension sensor is installed correctly and whether it is subject to external interference.

[0032] The tension sensor 42 monitors the tension in real time and transmits the measured data to the control host 2 in the form of an electrical signal. The controller compares the received tension data with the preset tension value of 400N in real time. Before the tension reaches 400N, the motor 54 continues to rotate, gradually increasing the tension. When the tension approaches 400N, the control host 2 gradually reduces the speed of the stepper motor 54 to ensure a steady increase in tension and avoid overshoot. When the tension reaches 400N, the control host 2 immediately issues a stop signal, and the motor 54 stops rotating. At this time, the tension sensor maintains its current position, ensuring that the tension remains stable at 400N.

[0033] As another embodiment of the tension generating component 5, Figure 5-6 As shown, the tension generating assembly 5 includes a transverse screw rod 51 arranged toward the vehicle under test and a nut block 44 threadedly mounted on the transverse screw rod 51. One end of the tension sensor 42 is connected to the nut block 44. One axial end of the transverse screw rod 51 is connected to a handwheel 55. The handwheel 55 facilitates the operator to sense the change in tension in real time, and can realize observing the changes in the door of the vehicle under test while slowly applying tension. The operation is also relatively simple.

[0034] At the same time, in this embodiment, a plurality of adjustable support feet 3 are installed at the bottom of the main support frame 1, and the levelness and height of the detection device can be adjusted by adjusting the adjustable support feet 3. The adjustable support feet 3 can adopt a commonly used height adjustment mechanism.

[0035] As a detection method of the vehicle door opening test device after a side collision of a vehicle in this embodiment, it includes the following steps: S1. First, select different types of suction cups for installation according to the material of the vehicle body. Place the main support frame 1 on the side of the door of the vehicle under test after the side impact test. Adjust the height of the upper support point adjustment seat 7 according to the height of the vehicle. The upper suction support member 10 is on the vehicle body. S2. After the device is fixed, adjust the tension actuator adjustment seat 14 to the height of the door handle, and preliminarily compare whether the detection position is appropriate. After confirming that the detection position can be covered by the tension actuator 4, fix the upper and lower positions of the tension actuator adjustment seat 14; S3. Adjust the tension connector 43 to the vicinity of the detection point of the vehicle to be tested, connect it to the detection point of the vehicle, and complete the equipment adjustment preparation; S4. After the equipment is fixed and connected to the detection point, the control host 2 is turned on and the tension generating component 5 is started. The motor 54 of the tension generating component 5 starts to rotate or the hand wheel 55 is manually driven to rotate, driving the nut block 44 and the tension sensor 42 to move backward. The tension sensor 42 synchronously drives the tension connector 43 to move backward. At this time, the equipment tension acts on the door detection point. The real-time tension data detected by the tension sensor 42 is synchronously displayed on the control host 2. During this process, observe whether the door is opened abnormally and whether there is any abnormality in the equipment. S5. Under normal testing conditions, when the tension reaches the specified value, the control host 2 sends a stop signal to stop the motor 54, or the operator manually stops turning the handwheel 55 after seeing the control host 2 send the stop signal. The entire device maintains the specified tension for 30 seconds, observes whether the door opens, and records the test results. During the observation process, a high-definition camera is used to film the door to record its initial state and any possible opening process. If the door is open, record the degree of opening, direction of opening and other information in detail. The degree of opening is determined by measuring the angle of the door opening or the width of the gap. If the door is not open, record it as closed and check whether there is any abnormal deformation or looseness around the door. If so, make a detailed record. Do not touch the door or the test device during the entire observation process to ensure the authenticity and objectivity of the test results. S6. After recording the test results, the operating motor 54 starts to rotate in the reverse direction or the operator reverses the hand wheel 55, and the tension actuator 4 releases the tension until the tension connector 43 can be separated from the door fixing point, and then the testing device is disassembled and removed.

[0036] Therefore, the technical solution of this embodiment can produce the following technical effects: 1. Existing manual pulling methods rely on operator experience, resulting in a force fluctuation range of over ±50N, which cannot consistently meet the precise "400N lateral force" requirement in regulations such as GB 20071-2025. In this embodiment, through closed-loop control between the force sensor 42 and the control host 2, combined with a motor 54 or precision screw drive, the force control accuracy can reach ±1N, and the force increase rate can be preset (e.g., 20N / s), preventing the additional impact of instantaneous impact forces on the door structure and ensuring that the testing conditions are fully consistent with regulatory requirements. 2. Existing mechanical clamp-type detection devices are only suitable for metal car bodies. They cannot stably fix non-magnetic car bodies such as plastic and aluminum, requiring additional auxiliary connectors (which can easily damage the car body structure). This embodiment uses a replaceable electromagnetic suction cup (suction force ≥ 500N) or vacuum suction cup (vacuum degree -0.08MPa to -0.1MPa) to directly attach to iron, aluminum, carbon fiber, or plastic car bodies.

[0037] 3. In existing detection methods, hook-type devices need to be inserted into door gaps or damage door and window frames, which can easily lead to increased deformation of the door (the measured average additional deformation is 1-2 mm), interfering with the original collision results. This embodiment achieves zero damage through the following designs: the upper suction support member 10 and the suction support member 11 are fixed by adsorption force, without mechanical puncture or clamping; the tension connector 43 adopts a hook coupling structure, which is only connected to the door handle or a preset detection point to avoid contact with key parts such as the door lock core and sealing strip; the direction of the tension throughout the detection process is consistent with the door opening direction (adjusted by the rotation of the connecting rod 6, the angle deviation is ≤5°), and there is no additional deformation caused by lateral force.

[0038] 4. Traditional testing requires changing fixtures for different vehicle types (sedans, SUVs, trucks), requiring a preparation time of 30 minutes or more for each vehicle type. This embodiment utilizes a modular adjustment structure to enable rapid adaptation. The upper support point adjustment rod 8 is adjustable in length (0.5-1.2m) to accommodate varying vehicle widths. The tension actuator adjustment base 14 has a height adjustment range of 0.8-1.5m, covering testing requirements for vehicles ranging from sedans (handle height approximately 0.9m) to SUVs (handle height approximately 1.3m).

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being described. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0042] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A vehicle door opening test device after a side collision, comprising a main support frame (1), characterized in that: The main support frame (1) is provided with a tension actuator adjustment seat (14) and an upper support point adjustment seat (7) with adjustable positions, and the upper support point adjustment seat (7) is laterally connected to an upper support point adjustment rod (8) extending toward the vehicle to be tested. The front end of the upper support point adjustment rod (8) is provided with at least one upper suction support member (10) for connecting to the vehicle to be tested. One side of the tension actuator adjustment seat (14) is rotatably connected to a connecting rod (6). The first end of the connecting rod (6) is movably connected to a connecting rod for connecting to the vehicle to be tested. The suction support component (11) is connected to the vehicle under test, and the second end of the connecting rod (6) is movably connected to a tension actuator (4), and the tension actuator (4) includes a base plate (41), a tension generating component (5) arranged on the base plate (41) and a tension connector (43) extending toward the vehicle under test, and a tension sensor (42) is connected between the tension generating component (5) and the tension connector (43), and a control host (2) is also installed on the main support frame (1), and the control host (2) is electrically connected to the tension sensor (42).

2. The vehicle door opening test device after a side collision according to claim 1, characterized in that: A suction piece (12) is installed at the front end of the suction support component (11), and the suction piece (12) and the upper suction support component (10) are electromagnetic suction cups or vacuum suction cups.

3. The vehicle door opening test device after a side collision according to claim 2, characterized in that: The upper suction support members (10) are arranged in a plurality and are movably connected to the front end of the upper support point adjustment rod (8) via a rotating arm (9).

4. The vehicle door opening test device after a side collision according to claim 1, characterized in that: The tension connection head (43) comprises a first hook connected to the tension sensor (42) and a second hook (13) connected to the door of the vehicle being tested, wherein the first hook and the second hook (13) can be hooked and coupled with each other.

5. The vehicle door opening test device after a side collision according to claim 1, characterized in that: The tension generating assembly (5) includes a transverse screw rod (51) arranged toward the vehicle to be tested and a nut block (44) threadedly mounted on the transverse screw rod (51), one end of the tension sensor (42) is connected to the nut block (44), one axial end of the transverse screw rod (51) is connected to a driven umbrella gear (52), one side of the driven umbrella gear (52) is meshed with an active umbrella gear (53) driven by a motor (54), and the motor (54) is electrically connected to the control host (2).

6. The vehicle door opening test device after a side collision according to claim 1, characterized in that: The tension generating assembly (5) includes a transverse screw rod (51) arranged toward the vehicle to be tested and a nut block (44) threadedly mounted on the transverse screw rod (51), one end of the tension sensor (42) is connected to the nut block (44), and one axial end of the transverse screw rod (51) is connected to a handwheel (55).

7. The vehicle door opening test device after a side collision according to claim 1, characterized in that: The control host (2) includes a device control switch (21) and a tension display (22).

8. The vehicle door opening test device after a side collision according to claim 1, characterized in that: A plurality of adjustable supporting feet (3) are installed at the bottom of the main support frame (1).

9. A method for detecting door opening after a vehicle side collision according to any one of claims 1 to 8, characterized in that: The steps include: S1. Place the main support frame (1) on one side of the door of the vehicle to be tested after the side impact test, adjust the height of the upper support point adjustment seat (7) according to the height of the vehicle, and place the upper suction support member (10) on the vehicle body; S2. After the device is fixed, adjust the tension actuator adjustment seat (14) to the height of the door handle, and preliminarily compare whether the detection position is appropriate. After confirming that the detection position can be covered by the tension actuator (4), fix the upper and lower positions of the tension actuator adjustment seat (14); S3, adjusting the tension connector (43) to the vicinity of the detection point of the vehicle to be tested, connecting it to the vehicle detection point, and completing the equipment adjustment preparation; S4. After the equipment is fixed and connected to the detection point, the control host (2) is turned on, and the tension generating component (5) is started. The motor (54) of the tension generating component (5) starts to rotate or the hand wheel (55) is manually driven to rotate, driving the nut block (44) and the tension sensor (42) to move backward. The tension sensor (42) synchronously drives the tension connector (43) to move backward. At this time, the equipment tension acts on the door detection point, and the real-time tension data detected by the tension sensor (42) is synchronously displayed on the control host (2). During this process, observe whether the door is opened abnormally and whether the equipment is abnormal. S5. Under normal testing conditions, when the tension reaches the specified value, the control host (2) sends a stop signal to stop the motor (54) or the operator manually stops turning the hand wheel (55) after seeing the control host (2) send a stop signal. The entire device maintains the specified tension for 30 seconds, and observes whether the door is opened and records the test results. S6. After recording the test results, the operating motor (54) starts to rotate in the reverse direction or the operator reverses the hand wheel (55), and the tension actuator (4) releases the tension until the tension connector (43) can be separated from the door fixing point, and then the testing device is disassembled and removed.

10. The detection method of the vehicle door opening test device after a side collision of a vehicle according to claim 9, characterized in that: During the observation process in step S5, a high-definition camera is used to photograph the vehicle door to record the initial state of the vehicle door and any possible opening process. If the door is open, record the degree of opening, direction of opening and other information in detail. The degree of opening is determined by measuring the angle of the door opening or the width of the gap. If the door is not open, record that the door is closed and check whether there is any abnormal deformation or looseness around the door. If so, make a detailed record. Do not touch the door or the test device during the entire observation process to ensure the authenticity and objectivity of the test results.

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