A fixture for automobile B-pillar crash test

Abstract

The application discloses a clamp for automobile B-column collision test, which comprises a base, two supporting frames are installed on the base, a round hole is arranged on the supporting frame, a ring is rotatably installed in the round hole, two clamping plates are slidably installed on the inner wall of the ring, the two clamping plates are used for clamping the end of the automobile B-column by approaching each other, an annular worm wheel is fixedly arranged on the outer wall of the ring of the first supporting frame, a worm is rotatably installed on the first supporting frame and engaged with the annular worm wheel, and the worm is rotated to rotate the annular worm wheel so as to rotate the automobile B-column. The application can adjust the rotation angle of the automobile B-column along the radial direction of the ring, so that the collision mechanism can impact the automobile B-column at different angles in the collision test, and the multi-angle collision test can be carried out to detect the strength, rigidity and structural rationality of the automobile B-column in multiple directions.

Description

Technical Field

[0001] This invention relates to the field of impact testing of automotive parts, and more specifically, to a fixture for automotive B-pillar collision testing. Background Technology

[0002] In side-impact collisions of automobiles, the B-pillar, as a crucial side structure, is the primary component bearing the side impact force. In existing technologies, such as Chinese Patent Application No. CN202023027249.1, a dynamic impact testing device for automobile B-pillar components is disclosed. This device fixes the B-pillar using a limiting mechanism and then uses an impact mechanism to conduct an impact test on the B-pillar.

[0003] In the aforementioned technology, during a car B-pillar collision test, a limiting mechanism fixes the car B-pillar, restricting the impact test to a vertical direction only. However, in real-world side-impact collisions, the car B-pillar can collide in any direction. The limiting mechanism in this technology cannot adjust the angle of the car B-pillar, thus preventing multi-directional collision tests. Summary of the Invention

[0004] To address the problem in existing technologies that prevent adjustment of the B-pillar angle and thus hinder multi-directional collision testing, this invention provides a fixture for B-pillar collision testing. This invention allows adjustment of the B-pillar's rotation angle along the radial direction of a circular ring, enabling the collision mechanism to impact the B-pillar at different angles during the collision test. This allows for multi-angle collision testing to assess the B-pillar's strength, stiffness, and structural integrity from multiple perspectives.

[0005] The technical means employed in this invention are as follows:

[0006] A clamp for a car B-pillar collision test includes a base with two support frames mounted on it. Each support frame has a circular hole, and a circular ring is rotatably mounted inside the circular hole. Two clamping plates are slidably mounted on the inner wall of the circular ring. The two clamping plates are close to each other to clamp the end of the car B-pillar. An annular worm gear is fixedly sleeved on the outer wall of the circular ring on the first support frame. A worm gear that meshes with the annular worm gear is rotatably mounted on the first support frame. Rotating the worm gear can cause the annular worm gear to rotate, thereby causing the car B-pillar to rotate.

[0007] Furthermore, two opposing bases are installed on the inner wall of the ring along the same radial direction of the ring. The clamping plate is slidably installed between the two bases. A bidirectional screw is rotatably installed on the upper limit of the base. The two clamping plates are respectively threaded onto the opposite threads of the bidirectional screw. Rotating the bidirectional screw can make the two clamping plates move closer or further apart.

[0008] Furthermore, the base is rotatably mounted on a mounting plate at the center between the two support frames. A screw is rotatably mounted on the mounting plate, and two trapezoidal blocks are threadedly connected to the screw, which are symmetrically arranged about the center of the base between the two support frames. The trapezoidal blocks are slidably connected to the mounting plate, and the inclined surfaces of the two trapezoidal blocks abut against the two ends of the base. The two trapezoidal blocks are used to support the base. Rotating the screw can cause the two trapezoidal blocks to slide in the same direction to rotate the base.

[0009] Furthermore, ear plates are installed on both the base near the mounting plate and the mounting plate near the base, and the ear plates are connected by pins so that the base can rotate around the pins.

[0010] Furthermore, the clamp is fitted to the end of the car's B-pillar.

[0011] Furthermore, the base is provided with two sliding grooves, and the two support frames are slidably connected in the sliding grooves respectively. Springs are connected between the opposite side walls of the support frames and the corresponding inner walls of the sliding grooves.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This invention can adjust the rotation angle of the B-pillar of a car along the radial direction of a ring, so that the collision mechanism can impact the B-pillar of the car at different angles during a crash test. When the collision mechanism cannot be adjusted due to space constraints, the angle between the collision mechanism and the B-pillar of the car can be changed by rotating the worm gear, thereby enabling multi-angle crash tests to detect the strength, stiffness and structural rationality of the B-pillar of the car in multiple directions. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a clamp structure for a car B-pillar collision test according to an embodiment of the present invention.

[0016] Figure 2 This is a cross-sectional view of the support frame structure in an embodiment of the present invention.

[0017] Figure 3 This is a top view of the base structure in an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the cooperation between the car's B-pillar and the clamping plate in an embodiment of the present invention.

[0019] In the diagram: 1. Base; 101. Slide groove; 2. Support frame; 3. Ring; 4. Circular hole; 5. Clamping plate; 6. Car B-pillar; 7. Annular worm gear; 8. Worm; 9. Base; 10. Double-acting screw; 11. Mounting plate; 12. Screw; 13. Trapezoidal block; 14. Ear plate; 15. Pin; 16. Spring. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] like Figures 1-4 As shown, the present invention provides a clamp for a car B-pillar collision test, comprising: a base 1, on which two support frames 2 are mounted, each support frame 2 having a circular hole 4, a circular ring 3 rotatably mounted in the circular hole 4, and two clamping plates 5 slidably mounted in the circular ring 3, the two clamping plates 5 being close to each other to clamp the end of the car B-pillar 6, an annular worm gear 7 being fixedly sleeved on the outer wall of the circular ring 3 on the first support frame 2, and a worm 8 rotatably mounted on the first support frame 2 to mesh with the annular worm gear 7, rotating the worm 8 causing the annular worm gear 7 to rotate and thus causing the car B-pillar 6 to rotate.

[0023] In this plan, such as Figure 1 and 2Rotating the worm gear 8 drives the annular worm wheel 7 to rotate, thereby causing the ring 3 installed inside the annular worm wheel 7 to rotate. The clamping plate 5 installed on the ring 3 rotates with the ring 3, thereby causing the first end of the car B-pillar 6 to rotate. Since the ring 3 on the second support frame of the two support frames 2 clamps the second end of the car B-pillar 6, the rotation of the car B-pillar 6 will cause the ring 3 on the second support frame to rotate adaptively. This means that only the worm gear 8 on the first support frame 2 needs to be driven to drive the entire car B-pillar 6 to rotate, thereby adjusting the rotation angle of the car B-pillar 6 along the radial direction of the ring 3. This allows the collision mechanism to impact the car at different angles during the collision test. When the B-pillar 6 of the car is impacted, and the collision mechanism cannot be adjusted due to space constraints, the angle between the collision mechanism and the B-pillar 6 can be changed by rotating the worm gear 8. This allows for multi-angle collision tests to examine the strength, rigidity, and structural rationality of the B-pillar 6 from multiple directions. Furthermore, through the cooperation between the worm gear 8 and the annular worm wheel 7, the worm gear 8 can drive the annular worm wheel 7 to rotate, while the annular worm wheel 7 cannot drive the worm gear 8 to rotate. This ensures that the impact force will not cause the B-pillar 6 to rotate during the collision test, thus guaranteeing the stability of the B-pillar 6 during the collision test.

[0024] In Embodiment 1 of the present invention, the clamp 5 is attached to the end of the B-pillar 6 of the car.

[0025] In this plan, such as Figure 4 Because the end surface of the B-pillar 6 of the car is irregularly shaped, after the two clamping plates 5 clamp the end of the B-pillar 6 of the car, the clamping plates 5 on both sides of the end of the B-pillar 6 of the car fit into the B-pillar of the car, ensuring the stability of clamping the B-pillar 6 of the car.

[0026] Based on Embodiment 1, in Embodiment 2 of the present invention, two opposing bases 9 are installed on the inner wall of the ring 3 along the same radial direction of the ring 3. The clamping plate 5 is slidably installed between the two bases 9. The bases 9 are rotatably mounted with a bidirectional screw 10. The two clamping plates 5 are respectively threaded onto the opposite threads of the bidirectional screw 10. Rotating the bidirectional screw 10 can make the two clamping plates 5 move closer or further away from each other.

[0027] In this plan, such as Figure 2 After placing the ends of the car B-pillar 6 between the two clamping plates 5 on the same support frame 2, rotating the corresponding double-acting screw 10 can bring the two clamping plates 5 on the same support frame 2 closer together to hold the double-acting screw 10, which facilitates the installation and removal of the car B-pillar 6 and saves manpower.

[0028] Based on the above embodiments, in Embodiment 3 of the present invention, the base 1 is rotatably mounted on the mounting plate 11 at the middle of the two support frames 2. The mounting plate 11 is rotatably mounted with a screw 12. Two trapezoidal blocks 13 are threadedly connected to the screw 12, which are symmetrically arranged about the middle of the base 1 between the two support frames 2. The trapezoidal blocks 13 are slidably connected to the mounting plate 11. The inclined surfaces of the two trapezoidal blocks 13 abut against the two ends of the base 1 respectively. The two trapezoidal blocks 13 are used to support the base 1. Rotating the screw 12 can make the two trapezoidal blocks 13 slide in the same direction to make the base 1 rotate.

[0029] In this plan, such as Figure 1 By rotating the screw 12, the two trapezoidal blocks 13 can slide, allowing the base 1 to rotate around the middle of the base 1 located between the two support frames 2, thereby adjusting the angle between the car B-pillar 6 and the collision mechanism, so that the collision mechanism can conduct impact tests on the car B-pillar 6 from different angles; and after the base 1 rotates to the preset angle, the two trapezoidal blocks 13 always abut against the two ends of the base 1, ensuring the support stability of the base 1; and by setting the screw 12 to be threadedly connected to the trapezoidal blocks 13, the trapezoidal blocks 13 are prevented from moving due to impact during the impact test.

[0030] Based on the above embodiments, in Embodiment 4 of the present invention, ear plates 14 are installed on both the side of the base 1 near the mounting plate 11 and the side of the mounting plate 11 near the base 1. The ear plates 14 are connected by pins 15 so that the base 1 can rotate around the pins 15.

[0031] In this design, the base 1 and the mounting plate 11 are rotatably connected by the pin 15 and the ear plate 14, which facilitates the installation and disassembly of the base 1 and the mounting plate 11.

[0032] Based on the above embodiments, in embodiment 5 of the present invention, the base 1 is provided with two sliding grooves 101, and the two support frames 2 are respectively slidably connected in the sliding grooves 101. Springs 16 are connected between the opposite side walls of the support frames 2 and the corresponding inner walls of the sliding grooves 101.

[0033] In this plan, such as Figure 3 During a crash test, excessive impact force can cause the B-pillar 6 of the car to bend and deform. In conventional fixed clamps, both ends of the B-pillar 6 are fixedly mounted on the clamp. If the B-pillar 6 is bent and deformed by an impact, the change in the total length of the B-pillar 6 can easily generate shear force between the B-pillar 6 and the clamp, which will cause fatigue damage to the clamp. This solution uses springs 16 at both ends of the support frame 2 to adjust the distance between the two support frames 2. This allows the support frame 2 to adapt to the length of the deformed B-pillar 6 after the B-pillar 6 is deformed by a collision, thus avoiding damage to the clamping plate 5.

[0034] This invention provides a fixture for automotive B-pillar collision testing, solving the problem in existing technologies where the angle of the automotive B-pillar cannot be adjusted, thus preventing multi-directional collision tests. It allows adjustment of the rotation angle of the automotive B-pillar along the radial direction of a circular ring, enabling the collision mechanism to impact the B-pillar at different angles during the collision test. This allows for multi-angle collision tests to detect the strength, stiffness, and structural rationality of the automotive B-pillar from multiple directions.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixture for automotive B-pillar collision testing, characterized in that, include: A base (1) has two support frames (2) mounted side by side on it. Each support frame (2) has a circular hole (4) in which a circular ring (3) is rotatably installed. Two clamping plates (5) are slidably installed on the inner wall of the circular ring (3). The two clamping plates (5) are close to each other to clamp the end of the B-pillar (6) of the car. A ring worm gear (7) is fixedly sleeved on the outer wall of the circular ring on the first support frame (2). A ring worm gear (7) is rotatably installed on the first support frame. The worm gear (8) meshes with the wheel (7). Rotating the worm gear (8) causes the annular worm wheel (7) to rotate, thereby rotating the car B-pillar (6). Two opposing bases (9) are installed on the inner wall of the annular ring (3) along the same radial direction. The clamping plate (5) is slidably installed between the two bases (9). A bidirectional screw (10) is rotatably installed on the upper limit of the base (9). The two clamping plates (5) are respectively threaded onto the opposite threads of the bidirectional screw (10). Rotating the bidirectional screw... The screw (10) enables the two clamps (5) to move closer or further apart; the base (1) is rotatably mounted on the mounting plate (11) at the center between the two support frames (2), and the mounting plate (11) is rotatably mounted with a screw (12). The screw (12) is threaded with two trapezoidal blocks (13) symmetrically arranged about the center between the two support frames (2) of the base (1). The trapezoidal blocks (13) are slidably connected to the mounting plate (11) and the two trapezoidal blocks (13) are slidably connected to each other. The inclined surfaces of the two trapezoidal blocks (13) abut against the two ends of the base (1). The two trapezoidal blocks (13) are used to support the base (1). Rotating the screw (12) can make the two trapezoidal blocks (13) slide in the same direction to make the base (1) rotate. The base (1) is provided with two sliding grooves (101). The two support frames (2) are slidably connected in the sliding grooves (101). The two opposite side walls of the support frame (2) are connected to the inner wall of the corresponding sliding groove (101) by springs (16).

2. The fixture for automobile B-pillar collision testing according to claim 1, characterized in that, Ear plates (14) are installed on both the base (1) near the mounting plate (11) and the mounting plate (11) near the base (1). The ear plates (14) are connected by pins (15) so that the base (1) can rotate around the pins (15).

3. A fixture for automotive B-pillar collision testing according to claim 1, characterized in that, The clamp (5) is attached to the end of the B-pillar (6) of the car.

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