A vehicle roll-over protection device

Abstract

The utility model provides a kind of vehicle rollover protection device, it includes installation crossbeam, with the both ends of the installation crossbeam connection two support arms and with the end of the support arm connection ground contact protection piece, the end of the support arm has an installation shaft and the circumferential distribution of several corner positioning holes around the installation shaft, the ground contact protection piece includes connecting piece, support and telescopic positioning mechanism, the connecting piece is rotatably connected with the installation shaft and is fixed opposite with support arm by the corner positioning hole, the support includes adjusting block and the support plate connected with adjusting block, the adjusting block is movably cooperated with the connecting piece, the telescopic positioning mechanism makes the adjusting block and the connecting piece fixed opposite.The utility model can change the support angle and extension distance of ground contact protection piece, and can select the support angle and extension distance of appropriate adaptation according to the different test working condition, to improve test efficiency and protection effect.

Description

Technical Field

[0001] This utility model relates to the field of vehicle testing equipment technology, and specifically to a vehicle rollover protection device. Background Technology

[0002] One test condition for airbag misoperation testing is vehicle impact with a ramp. Under this test condition, the vehicle may roll over, causing damage to the vehicle's shape and structure. On the one hand, this makes the vehicle testing less economical, as vehicle parts or even the entire vehicle need to be replaced after each test, which greatly increases the testing cost. On the other hand, in repetitive tests, replacing parts or the entire vehicle will affect the reliability and consistency of the data, limiting the comprehensive evaluation of vehicle performance.

[0003] Patent application CN202020165357.6 discloses a rollover protection bracket, which includes a first crossbeam and a second crossbeam rotatably connected. The ends of the first and second crossbeams are connected to anti-friction ball tops. When a vehicle rolls over, the anti-friction ball tops are used to withstand ground impact, providing protection and preventing damage to the vehicle during a rollover. While this technical solution can provide some rollover protection, its fixed installation structure lacks adaptability to different vehicle models and operating conditions, and it cannot efficiently perform airbag misoperation tests. Summary of the Invention

[0004] To address the aforementioned problems, this utility model provides a vehicle rollover protection device. This rollover protection device has an adjustment function, which can adapt to different vehicle models or operating conditions, thereby improving the efficiency of airbag malfunction testing and the protection effect on the vehicle body.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A vehicle rollover protection device includes a mounting beam, two support arms connected to both ends of the mounting beam, and a ground contact protection component connected to the ends of the support arms. Each support arm has a mounting shaft at its end and a plurality of corner positioning holes circumferentially distributed around the mounting shaft. The ground contact protection component includes a connector, a support, and a telescopic positioning mechanism. The connector includes an inner connecting part and an outer connecting part. The inner connecting part has a mounting shaft hole and a corner fitting hole, and is rotatably connected to the mounting shaft through the mounting shaft hole. The corner fitting hole corresponds to the corner positioning hole. The outer connecting part has a mounting guide rail. The support includes an adjusting block that mates with the mounting guide rail and a support plate connected to the end of the adjusting block. The adjusting block can move along the mounting guide rail and is fixed relative to the mounting guide rail by the telescopic positioning mechanism.

[0006] Furthermore, the telescopic positioning mechanism includes a telescopic positioning hole formed in the mounting guide rail, a telescopic mating hole formed in the adjusting block, and a telescopic locking member for passing through the telescopic positioning hole and the telescopic mating hole, wherein a plurality of the telescopic positioning holes are arranged at intervals along a straight line.

[0007] Furthermore, the telescopic positioning mechanism includes an electrically driven movable component that can move along the mounting guide rail, and the adjusting block is fixedly connected to the movable component.

[0008] Furthermore, the two ends of the mounting beam are provided with connecting plates, the connecting plates are provided with width positioning holes, the support arm is provided with width mating holes, the connecting plates and the support arm are fixedly connected by width locking members passing through the width positioning holes and the width mating holes, and a plurality of the width positioning holes are arranged at intervals along a straight line.

[0009] Furthermore, the support arm includes a first extension and a second extension connected at an angle, the angle between the first extension and the second extension being 120°~150°, the end of the first extension being connected to the mounting beam, and the extension direction of the first extension being consistent with the length direction of the mounting beam.

[0010] Furthermore, the second extension is provided with several triangular hollow structures.

[0011] Furthermore, the support plate includes a flat plate support portion located in the middle and two arc-shaped support portions connected to opposite sides of the flat plate support portion, the arc-shaped support portions extending and bending toward the side where the adjusting block is located.

[0012] Furthermore, a tilt angle sensor is provided in the middle of the mounting beam.

[0013] Furthermore, the support arm is provided with a distance sensor disposed between the two support arms, the distance sensor being located near the end of the second extension.

[0014] Furthermore, a mounting bracket is connected to the middle part of the mounting beam, and the mounting bracket is provided with mounting holes.

[0015] The following beneficial effects can be achieved by applying this utility model: 1. The ground contact protection component of this utility model can adjust the angle of the support plate by changing the mating position of the corner positioning hole and the corner mating hole, and can adjust the extension distance of the support plate by changing the fixed position between the adjusting block and the mounting guide rail. According to different test conditions, appropriate support angle and extension distance can be selected, thereby improving test efficiency and protection effect.

[0016] 2. In some embodiments of this utility model, a detachable connection is formed between the mounting beam and the support arm, and the distance between the two support arms can be adjusted to adapt to different vehicle widths and improve the versatility of the device.

[0017] 3. In some embodiments of this utility model, the support arm adapts to the shape of the vehicle body by connecting the first extension and the second extension at an angle, which can better meet the testing requirements.

[0018] 4. In some embodiments of this utility model, a tilt angle sensor is provided in the middle of the mounting beam. The tilt angle sensor can record the tilt changes of the vehicle in real time during the test, assisting in the calibration of the data, so that the airbag false activation test can obtain more realistic and reliable results. The support arm is provided with a distance sensor, which can measure the distance between the ends of the two support arms and the vehicle body to ensure that the vehicle body is in the center position of the protection device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure for installing the crossbeam in the embodiment; Figure 3 This is a schematic diagram of the support arm in the embodiment; Figure 4 This is a schematic diagram of the ground contact protection component in the embodiment; In the diagram, 1-mounting beam, 11-connecting plate, 111-width positioning hole, 12-tilt angle sensor, 13-mounting bracket, 131-mounting hole, 2-support arm, 21-first extension, 211-width mating hole, 22-second extension, 221-mounting shaft, 222-corner positioning hole, 223-hollow structure, 224-distance sensor, 3-ground contact protection component, 31-connector, 311-mounting shaft hole, 312-corner mating hole, 313-mounting guide rail, 314-telescopic positioning hole, 32-support component, 321-adjusting block, 3211-telescopic mating hole, 322-support plate, 3221-flat plate support, 3222-arc support. Detailed Implementation

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Example

[0021] Reference Figures 1-4One embodiment of this utility model provides a vehicle rollover protection device, including a mounting beam 1, two support arms 2 connected to both ends of the mounting beam 1, and ground contact protection components 3 connected to the ends of the support arms 2. In use, the mounting beam is fixedly connected to the front and rear bumpers of the vehicle, allowing the two support arms 2 to extend to the sides of the vehicle. When the vehicle rolls over, the ground contact protection components 3 contact the ground and absorb the impact, preventing the vehicle from rolling over and providing protection. Specifically: The mounting beam 1 has connecting plates 11 at both ends. The connecting plates 11 have multiple width positioning holes 111. The multiple width positioning holes 111 are arranged at intervals along the length of the mounting beam 1. The mounting beam 1 has two mounting brackets 13 near the middle. The mounting brackets 13 have mounting holes 131. In use, the two mounting brackets 13 are fixedly connected to the front and rear bumpers of the vehicle to realize the installation of the protection device. The support arm 2 includes a first extension 21 and a second extension 22 connected at an angle of 120° to 150° to adapt to the vehicle body shape. The end of the first extension 21 is provided with a width mating hole 211, which corresponds to the position of the width positioning hole 111. A width locking member passing through the width positioning hole 111 and the width mating hole 211 allows for a fixed connection between the first extension 21 and the connecting plate 11. The width locking member can be a common bolt structure. To improve connection stability, the width positioning hole 111 and the width... Two rows of mating holes 211 should be provided on each side. By changing the mating position of the width mating hole 211 and the width positioning hole 111, the distance between the two support arms 2 can be changed, thereby adjusting the overall width of the protective device to adapt to different vehicle models or meet different support requirements. The end of the second extension 22 is provided with a mounting shaft 221 and a number of corner positioning holes 222 distributed around the mounting shaft 221. The middle part of the second extension is provided with a number of hollow structures 223. The main shape of the hollow structure is preferably triangular, which reduces the weight while ensuring the structural strength and tensile strength of the support arm. The ground contact protection component 3 includes a connector 31, a support 32, and a telescopic positioning mechanism. The connector 31 includes an inner connecting part and an outer connecting part. The inner connecting part has a mounting shaft hole 311 and a corner fitting hole 312. The inner connecting part is rotatably connected to the mounting shaft 221 through the mounting shaft hole 311. The corner fitting hole 312 corresponds to the corner positioning hole 222. The connector 31 and the second extension 22 are fixedly connected by an angle locking member passing through the corner fitting hole 312 and the corner positioning hole 222. The angle locking member can adopt a common bolt structure, and the corner fitting hole can be adjusted by changing the angle locking member. The alignment of the support member 32 with the corner positioning hole 222 allows for adjustment of its orientation. The outer connecting part has a mounting rail 313, with a slide rail structure formed in the middle. The support member 32 includes an adjusting block 321 that slides along the slide rail and a support plate 322 connected to the adjusting block 321. The support plate 322 includes a flat plate support 3221 in the middle and two arc-shaped support portions 3222 connected to opposite sides of the flat plate support 3221. The arc-shaped support portions 3222 bend and extend towards the side where the adjusting block 321 is located to improve impact resistance. The adjusting block 321 is fixed relative to the mounting guide rail 313 via the telescopic positioning mechanism. The telescopic positioning mechanism can achieve relative fixation between the adjusting block and the mounting guide rail in various ways. For example, in a first embodiment, the telescopic positioning mechanism is a manually adjustable structure, including a telescopic positioning hole 314 formed in the mounting guide rail 313, a telescopic mating hole 3211 formed in the adjusting block 321, and a telescopic locking member for passing through the telescopic positioning hole and the telescopic mating hole. The telescopic locking member can be a common bolt structure. Several telescopic positioning holes are arranged at linear intervals. By changing the mating position of the telescopic mating hole 3211 and the telescopic positioning hole 314, the outward extension distance of the support plate 322 can be changed. In a second embodiment, the telescopic positioning mechanism is an electrically adjustable structure, including an electrically driven movable member that can move along the mounting guide rail. The adjusting block 321 is fixedly connected to the movable member. The electric drive method can be cylinder drive, screw drive, rack and pinion drive, etc. By adjusting the angle and extension distance, this embodiment can achieve vehicle protection under different working conditions.

[0022] In a further embodiment, the present invention can also be combined with sensors. For example, a tilt angle sensor 12 is set in the middle of the mounting beam 1. The tilt angle sensor 12 is used to record the dynamic changes of the vehicle's tilt angle and assist in data calibration. Another example is that a distance sensor 224 is set on each of the two support arms 2. The distance sensor is set at the end of the second extension 22 and is used to detect the distance between the vehicle body and the end of the second extension. Based on the data from the two distance sensors, it can be determined whether the vehicle body is in the center position of the protection device, so as to assist in the installation and structural adjustment of the protection device.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle rollover protection device, characterized in that: The device includes a mounting beam (1), two support arms (2) connected to both ends of the mounting beam (1), and a ground contact protection element (3) connected to the end of the support arms (2). The end of the support arm (2) has a mounting shaft (221) and a plurality of corner positioning holes (222) distributed around the mounting shaft (221). The ground contact protection element (3) includes a connector (31), a support (32), and a telescopic positioning mechanism. The connector (31) includes an inner connecting part and an outer connecting part. The inner connecting part has a mounting shaft hole (311). The inner connecting part is rotatably connected to the mounting shaft (221) through the mounting shaft hole (311), and the corner fitting hole (312) corresponds to the corner positioning hole (222). The outer connecting part has a mounting guide rail (313). The support member (32) includes an adjusting block (321) that cooperates with the mounting guide rail and a support plate (322) that is connected to the end of the adjusting block. The adjusting block can move along the mounting guide rail and is fixed relative to the mounting guide rail through the telescopic positioning mechanism.

2. The vehicle rollover protection device according to claim 1, characterized in that: The telescopic positioning mechanism includes a telescopic positioning hole (314) formed in the mounting guide rail, a telescopic mating hole (3211) formed in the adjusting block, and a telescopic locking member for passing through the telescopic positioning hole and the telescopic mating hole. A plurality of the telescopic positioning holes (314) are arranged at intervals along a straight line.

3. The vehicle rollover protection device according to claim 1, characterized in that: The telescopic positioning mechanism includes an electrically driven movable component that can move along the mounting guide rail, and the adjusting block is fixedly connected to the movable component.

4. The vehicle rollover protection device according to claim 1, characterized in that: The mounting beam (1) is provided with connecting plates (11) at both ends. The connecting plates (11) are provided with width positioning holes (111). The support arm is provided with width fitting holes (211). The connecting plates and the support arm are fixedly connected by width locking members passing through the width positioning holes (111) and the width fitting holes (211). Several width positioning holes are arranged at intervals along a straight line.

5. The vehicle rollover protection device according to claim 1, characterized in that: The support arm (2) includes a first extension (21) and a second extension (22) connected at an angle. The angle between the first extension and the second extension is 120°~150°. The end of the first extension is connected to the mounting beam, and the extension direction of the first extension is consistent with the length direction of the mounting beam.

6. The vehicle rollover protection device according to claim 5, characterized in that: The second extension (22) is provided with a number of triangular hollow structures.

7. The vehicle rollover protection device according to claim 1, characterized in that: The support plate (322) includes a flat plate support (3221) located in the middle and two arc-shaped support parts (3222) connected to the opposite sides of the flat plate support. The arc-shaped support parts bend and extend toward the side where the adjustment block (321) is located.

8. The vehicle rollover protection device according to claim 1, characterized in that: An tilt angle sensor (12) is provided in the middle of the mounting beam (1).

9. A vehicle rollover protection device according to claim 5, characterized in that: The support arm is provided with a distance sensor (224) disposed between the two support arms, the distance sensor being located near the end of the second extension (22).

10. A vehicle rollover protection device according to claim 1, characterized in that: A mounting bracket (13) is connected to the middle part of the mounting beam, and the mounting bracket is provided with mounting holes (131).

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