Auxiliary aiming tool of universal impactor for automobile pedestrian protection
By designing an auxiliary aiming fixture that integrates a coaxial laser pointer, the problems of offset error and complex operation in traditional equipment are solved, achieving efficient and accurate alignment in the impact test of vehicle pedestrian protection, and ensuring the reliability and repeatability of test data.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional automotive pedestrian protection impact testing equipment's laser indicator device suffers from problems such as accumulated offset errors and complex, time-consuming operation procedures, affecting the accuracy and efficiency of test data.
Design a universal impactor auxiliary aiming fixture for vehicle and pedestrian protection. The laser indicator is integrated into the center of the main body and is coaxially mounted with the guide rail through the mounting slot, which simplifies the operation process, eliminates offset errors, and achieves one-step alignment.
By eliminating offset errors and simplifying the operation process, the accuracy and efficiency of the test were improved, ensuring precise alignment of the launcher center and enhancing the reliability and repeatability of the test data.
Smart Images
Figure CN224202751U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pedestrian protection impact testing equipment, specifically an auxiliary aiming tool for a universal impactor for automobile pedestrian protection. Background Technology
[0002] Pedestrian protection testing is a key technological aspect of road traffic safety. Its core lies in simulating collisions between pedestrians and the front structure of vehicles to quantitatively analyze the potential injuries pedestrians may suffer in traffic accidents, providing data support for vehicle passive safety design. This test uses standardized impactors to simulate pedestrian body parts and requires precise control of the impactor's launch direction, speed, and impact location to ensure the reliability and repeatability of the test results.
[0003] Therefore, before the impact test, the center of the equipment's transmitter needs to be precisely aligned with the impact target point. However, traditional equipment generally uses offset laser pointing devices, such as the Universal Impact Testing System (UITS) used by our company. This equipment has the following technical problems when in use:
[0004] 1. Accumulation of offset error exists: such as Figure 1 As shown, due to the limitations of the front-end impact structure, the laser pointer 3 in this device can only be installed at a non-central position of the device's transmitting end 101, resulting in a Y-axis and Z-axis offset between the laser pointer point (P1) and the center (P point) of the device's transmitting end. When using it, the operator needs to first align the laser with the target point and then adjust the center of the transmitting end according to the offset. However, this process can easily lead to the accumulation of displacement deviation, thus affecting the accuracy of the test data.
[0005] 2. Complex and time-consuming operation process: As mentioned above, the existing alignment process needs to be completed in two steps, namely, firstly, preliminary positioning is achieved by laser, and then secondary adjustment is made based on the offset. This process reduces the efficiency of the test and increases the risk of misoperation. Utility Model Content
[0006] This utility model provides an auxiliary aiming fixture for a universal impactor for vehicle and pedestrian protection, which can solve the technical problems of offset error and complex and time-consuming operation process in existing impact equipment during alignment.
[0007] This application provides the following technical solution:
[0008] A universal impactor auxiliary aiming fixture for pedestrian protection includes a main body with mounting slots on its left and right sides for mounting on two sets of guide rails at the launching end of the impact device. A laser pointer and a clamping device for fixing the laser pointer are located at the center of the main body. When the main body is mounted on the guide rails, the laser pointer is coaxial and at the same height as the center of the launching end.
[0009] Beneficial effects:
[0010] 1. Eliminate offset error and improve alignment accuracy: This application integrates the laser pointer into the center of the main body, and ensures that the laser beam is coaxial and at the same height as the center of the transmitter after the tooling is installed (i.e., the geometric center is completely coincident) through the mounting slot; at this time, the laser spot landing point is the actual position of the center of the transmitter, without the need to calculate the offset or make secondary adjustments, thus eliminating the positioning error of traditional offset lasers from the root.
[0011] 2. Simplified operation process and significantly improved test efficiency: This application uses a coaxial laser and guide rail mounting slot design. When using it, the operator only needs to quickly install the tooling onto the guide rail through the mounting slot, and then move the equipment to make the laser spot directly align with the target point to complete the precise positioning of the center of the transmitter. The operation steps are simplified from two steps to one alignment step, omitting the offset calculation and secondary movement steps.
[0012] Furthermore, the main body has a horizontal through hole at its center and a vertical threaded hole at its top. The bottom of the threaded hole is connected to the through hole. The clamping element is a locking bolt that mates with the threaded hole. The laser pointer is installed in the through hole and fixed by the locking bolt.
[0013] Beneficial effect: Facilitates quick assembly, disassembly, and fixation of the laser pointer.
[0014] Furthermore, a magnetic suction component is also provided in the mounting slot.
[0015] Beneficial effects: The magnetic components facilitate quick disassembly of the main body and improve stability after installation, preventing slight displacement of the main body during the process of adjusting the device to align with the target point.
[0016] Furthermore, a semi-circular positioning groove is provided on the side of the main body near the mounting groove.
[0017] Beneficial effects: The semi-circular positioning groove facilitates positioning when the main body is installed on the guide rail, making it easy to quickly align and install.
[0018] Furthermore, fine-tuning bolts are provided on both the upper and lower walls of the positioning groove, with the two sets of fine-tuning bolts arranged opposite each other.
[0019] Beneficial effects: Since there may be processing errors in the main body during processing, fine-tuning bolts are set on the upper and lower walls of the positioning groove. During use, the main body can be finely adjusted by turning the upper fine-tuning bolt and / or the lower fine-tuning bolt to ensure that the laser pointer is perfectly aligned with the center of the transmitting end.
[0020] Furthermore, the width of the area between the center and the mounting slot of the main body is reduced.
[0021] Furthermore, weight-reducing holes are also provided on the main body.
[0022] Beneficial effects: By reducing the width of a certain area on the main body and setting weight-reducing holes, this application facilitates the lightweight design of the main body. At the same time, the lighter main body allows for the selection of magnetic components with weaker magnetic force, making it easier and less strenuous to remove. Furthermore, the reduced width of the middle area makes it easier to hold the main body during installation and disassembly, thus serving as a handle. Attached Figure Description
[0023] Figure 1 A schematic diagram showing the location of the existing impact device's transmitter and laser designator;
[0024] Figure 2 This is a schematic diagram of the auxiliary aiming tool of this utility model;
[0025] Figure 3 This is a schematic diagram illustrating another direction for assisting in aiming at the tooling;
[0026] Figure 4 for Figure 3 The front view. Detailed Implementation
[0027] The following detailed description illustrates the specific implementation method:
[0028] The markings in the accompanying drawings include: main body 1, weight reduction area 11, weight reduction hole 12, mounting groove 2, mounting boss 21, laser pointer 3, clamping part 31, through hole 32, threaded hole 4, magnet piece 5, positioning groove 6, guide rail 100, and transmitting end 101.
[0029] Example 1
[0030] like Figure 2-4 As shown, a universal impactor auxiliary aiming fixture for pedestrian protection includes a main body 1. Mounting grooves 2 are provided on the left and right sides of the main body 1, for mounting on two sets of guide rails 100 corresponding to the launching end 101 of the impact device. A laser pointer 3 and a clamping member 31 for fixing the laser pointer 3 are provided at the center of the main body 1. When the main body 1 is mounted on the guide rails 100, the laser pointer 3 is coaxial and at the same height as the center of the launching end 101. Specifically, as shown... Figure 3 As shown, in this embodiment, the main body 1 has a horizontal through hole 32 at its center, and the top of the main body 1 has a vertical threaded hole 4. The bottom of the threaded hole 4 is connected to the through hole 32. The clamping member 31 is a locking bolt that cooperates with the threaded hole 4. The laser pointer 3 is set in the through hole 32 and fixed by rotating the locking bolt.
[0031] To further improve the stability after installation, a magnetic suction component is also provided in the mounting groove 2. Specifically, the magnetic suction component is a magnetic piece 5. A mounting boss 21 is provided on one side of the mounting groove 2. The magnetic piece 5 abuts against the mounting boss 21. Both the mounting boss 21 and the magnetic piece 5 are provided with mounting holes. The magnetic piece 5 is fixed in the mounting groove 2 by inserting bolts from the outside of the mounting boss 21. This makes it convenient for the end of the guide rail 100 to be attracted and fixed to the magnetic piece 5 when the main body 1 is installed on the guide rail 100.
[0032] like Figure 3 As shown, in this embodiment, the side walls of the main body 1 on both sides near the mounting groove 2 are also provided with semi-circular positioning grooves 6, which facilitates quick positioning when the main body 1 is installed on the guide rail 100; and threaded holes 4 are provided on the upper and lower walls of the positioning groove 6, and fine-tuning bolts (not shown in the figure) are provided in the threaded holes 4, with two sets of fine-tuning bolts arranged opposite each other; since there may be processing errors in the main body 1 during processing, by providing fine-tuning bolts on the upper and lower walls of the positioning groove 6, the main body 1 can be finely adjusted by turning the upper fine-tuning bolt or / and the lower fine-tuning bolt during use, so as to ensure that the laser pointer 3 is completely aligned with the center of the transmitting end.
[0033] More preferably, in this embodiment, the width of the area between the center of the main body 1 and the mounting groove 2 is reduced. For easy distinction, this area is called the weight reduction area 11, and the weight reduction area 11 is also provided with weight reduction holes 12. This arrangement is conducive to achieving a lightweight design of the main body 1. At the same time, the lighter main body 1 can choose a magnetic suction component with less magnetic force, making it easier and less strenuous to remove. In addition, the weight reduction area 11 in the middle can also make it easier to hold the main body 1 during installation and disassembly, serving as a handle.
[0034] In use, the two mounting slots 2 on the left and right are fitted onto the two sets of guide rails 100 corresponding to the device's transmitter 101, and the ends of the guide rails 100 are attracted to the magnets 5 in the mounting slots 2 to ensure a stable connection between the fixture and the device, while also facilitating quick disassembly after aiming. Then, the fixture is calibrated using the fine-tuning bolts on the left and right sides to align the laser center with the center of the device's transmitter 101, eliminating the need for subsequent adjustments. Finally, the device is moved so that the laser spot of the laser pointer 3 is directly aligned with the pre-set impact target point. Since the laser center is coaxial with the center of the transmitter 101, the center of the transmitter 101 is now precisely aligned with the target point. After alignment, the main body 1 is removed from the guide rails 100, and then an impact test is performed. The device is activated to launch the impactor, simulating a pedestrian collision process, and relevant test data (such as impact force, acceleration, etc.) are collected.
[0035] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A universal impactor auxiliary aiming fixture for pedestrian protection, characterized in that, The device includes a main body with mounting slots on its left and right sides for mounting on two sets of guide rails at the emitting end of the impact device. A laser pointer and a clamping device for fixing the laser pointer are located at the center of the main body. When the main body is mounted on the guide rails, the laser pointer is coaxial and at the same height as the center of the emitting end.
2. The auxiliary aiming fixture for a universal impactor for pedestrian protection as described in claim 1, characterized in that: The main body has a horizontal through hole at its center and a vertical threaded hole at its top. The bottom of the threaded hole communicates with the through hole. The clamping element is a locking bolt that mates with the threaded hole. The laser pointer is installed in the through hole and fixed by the locking bolt.
3. The auxiliary aiming fixture for a universal impactor for pedestrian protection as described in claim 2, characterized in that: A magnetic suction component is also provided inside the mounting slot.
4. The auxiliary aiming fixture for a universal impactor for pedestrian protection vehicles according to any one of claims 1-3, characterized in that: A semi-circular positioning groove is also provided on the side of the main body near the mounting groove.
5. The auxiliary aiming fixture for a universal impactor for pedestrian protection as described in claim 4, characterized in that: Fine-tuning bolts are provided on both the upper and lower walls of the positioning groove, and the two sets of fine-tuning bolts are arranged opposite each other.
6. The auxiliary aiming fixture for a universal impactor for pedestrian protection as described in claim 5, characterized in that: The width of the area between the center and the mounting slot of the main body is reduced.
7. The auxiliary aiming fixture for a universal impactor for pedestrian protection of automobiles according to claim 6, characterized in that: The main body is also provided with weight reduction holes.