A vehicle door interior panel test fixture

Abstract

The present invention belongs to the technical field of equipment for dynamic or static testing of vehicle components, and discloses a vehicle door interior panel test fixture, comprising two fixture bodies and a connector for connecting the two fixture bodies, wherein one fixture body is provided with a latch mounting seat, and the other fixture body is provided with two hinge mounting seats. The installation of the test fixture and the vehicle door provided by the present invention is not a traditional welding, and the fixture can be reused, reducing the test cost and shortening the test cycle. In addition, the present invention simulates the installation of the vehicle door in the whole vehicle, and the test results are close to the vehicle door test of the whole vehicle, providing effective support for the development of vehicle door interior and door assembly products.

Description

Technical Field

[0001] The invention belongs to the field of equipment for dynamic or static testing of vehicle components, and in particular relates to a vehicle door interior trim panel testing tooling device. Background Art

[0002] Among traffic safety accidents, side collision accidents are one of the most common types of accidents. When a car collides from the side, the body sheet metal structure first collides and deforms, intrudes into the passenger compartment, pushes the door interior panel and collides with the passenger's body, causing injury to the passenger. In order to protect the safety of drivers and passengers and reduce injuries, national standards and the automotive industry have formulated corresponding regulations and standards to regulate the collision standards of automobiles. For example, the C-NCAP2018 version of the 50KPHAE-MDB collision standard commonly used in the automotive industry, and the C-IASI2017 version of the 50KPH MDB side collision standard proposed by the US IIHS regulations.

[0003] Therefore, during the automobile production process, a large number of tests are required to ensure the safety performance of automobile door interior panels. When conducting safety performance testing on automobile door interior panels, it is necessary to use a test fixture to fix the door and then conduct an impact test. The test fixture currently used usually includes a mounting frame and welding points set on the mounting frame. When installing the door, align the two sides of the door with the welding points, and weld the door to the welding points to achieve door installation, and then conduct an impact test. Therefore, through multiple tests, the impact resistance of the door can be obtained.

[0004] However, the inventors found during the experiments that the use of this tooling for testing could not effectively simulate the impact of an accident occurring during vehicle driving, and the data reference value provided for subsequent development and improvement of vehicle doors was low. Summary of the invention

[0005] The present invention is intended to provide a vehicle door interior panel testing fixture device to solve the problem that after using existing testing fixtures to install vehicle doors and conduct impact tests, the data provided has low reference value for the continued research and development and improvement of the vehicle doors.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a vehicle door interior panel testing tooling device, comprising two tooling bodies and a connecting piece for connecting the two tooling bodies, wherein one of the tooling bodies is provided with a lock mounting seat, and the other tooling body is provided with two hinge mounting seats.

[0007] Beneficial effects of this technical solution:

[0008] When a car collides sideways, the protection performance of the occupants is closely related not only to the body sheet metal, anti-collision structure, materials, etc., but also to the stiffness, shape, and distance of the door interior panel that directly collides with the occupants. Therefore, the data provided by the impact test can guide the design of the interior panel and provide data support for the development of the door. Therefore, when conducting the door impact test, it is necessary to truly reflect the stress conditions of the door and the interior panel.

[0009] This technical solution sets a latch mounting seat and two hinge mounting seats, and when the two sides of the door are mounted on the latch mounting seat and the hinge mounting seat respectively, it is the same as the way the door is mounted on the whole vehicle. Therefore, when performing an impact test, it is possible to more intuitively obtain various data after the door is impacted during driving, and the obtained test data is more realistic and can more accurately reflect the stress of the door and interior trim panels. It provides accurate and sufficient data support for the research and development and improvement of doors and interior trim panels. In addition, when the tooling provided by this technical solution is used, the door is not installed by welding directly on the tooling, so the tooling damage problem when the tooling is disassembled from the door can be avoided, thereby facilitating the reuse of the tooling.

[0010] Furthermore, the connecting member includes a base connecting rod, both ends of the base connecting rod are provided with first threaded holes, the bottoms of the two tooling bodies are provided with a plurality of second threaded holes that can cooperate with the first threaded holes, and bolts are provided in the first threaded holes.

[0011] Beneficial effects: The base connecting rod can connect the two tooling bodies, so that the entire tooling remains stable. In addition, the base connecting rod and the two tooling bodies are detachably connected, so that the size of the entire tooling can be adjusted and can adapt to the installation and impact test of car doors of different sizes.

[0012] Furthermore, the two tooling bodies each include a vertical mounting portion and a horizontal connecting portion, and the lock mounting seat and the hinge mounting seat are respectively arranged on the mounting portions of the two tooling bodies, and the mounting portions are in the shape of a right-angled trapezoid.

[0013] Beneficial effect: The horizontal connection part is used to maintain the stability of the tool body and is used to connect with the base connecting rod to achieve the connection of the entire tool. The mounting part is set to a right-angle trapezoidal shape. When performing an impact test, since one side is inclined, the different force directions can support the entire tool, thereby reducing the probability of the tool tipping.

[0014] Furthermore, the connecting member also includes two upper connecting rods, and both ends of the two upper connecting rods are connected to the two tooling bodies by bolts.

[0015] Beneficial effect: Using two upper connecting rods to connect the upper parts of the two tooling bodies can further maintain the stability of the entire tooling and improve the strength of the entire tooling.

[0016] Furthermore, the lock mounting seat and the hinge mounting seat are both connected to the tooling body by bolts.

[0017] Beneficial effect: It is convenient to install and replace the lock mounting seat and the hinge mounting seat.

[0018] Furthermore, the tool body and the connecting parts are both made of 45# steel or Q345 square steel.

[0019] Beneficial effect: By limiting the material, the strength of the entire tooling can be sufficient to support the impact test of the door interior panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0021] Figure 2 It is a left side view of Embodiment 2 of the present invention;

[0022] Figure 3 for Figure 2 Top view of the center positioning seat. DETAILED DESCRIPTION

[0023] The following is further described in detail through specific implementation methods:

[0024] The figure marks in the drawings of the specification include: left tool body 1, right tool body 2, rod body 3, reinforcement rod 4, stabilizing rod 5, mounting rod 6, lock mounting seat 7, hinge mounting seat 8, base connecting rod 9, upper connecting rod 10, base 11, slider 12, positioning seat 13, slide groove 14, limit piece 15, tensile machine 16, pull rope 17.

[0025] Embodiment 1:

[0026] A vehicle door interior panel test fixture, basically as shown in the attached Figure 1 As shown, it includes two tooling bodies and a connecting piece for connecting the two tooling bodies. The two tooling bodies are respectively a left tooling body 1 and a right tooling body 2, and both the left tooling body 1 and the right tooling body 2 include a vertical mounting portion and a horizontal connecting portion. Taking the left tooling body 1 as an example, its mounting portion includes four rod bodies 3 welded in sequence, and the mounting portion is in the shape of a right-angled trapezoid, a reinforcing rod 4 is integrally formed between the two waists of the mounting portion, and the right-angle waist of the mounting portion is located at the rear side. The connecting portion includes two rod bodies 3 welded to the two ends of the bottom of the mounting portion, and a stabilizing rod 5 is welded between the two rod bodies 3.

[0027] The connection parts of the left tooling body 1 and the right tooling body 2 are arranged opposite to each other. A vertical mounting rod 6 is welded to the rod body 3 at the rear side of the connection part of the left tooling body 1, while the right tooling body 2 is not provided with the mounting rod 6. A lock mounting seat 7 is connected to the rear side of the mounting part of the right tooling body 2 by bolts, and two hinge mounting seats 8 are connected to the mounting rod 6 by bolts. The two hinge mounting seats 8 are arranged in the vertical direction. The lock mounting seat 7 and the hinge mounting seat 8 are both parts of the car. According to different models, the lock mounting seat 7 and the hinge mounting seat 8 suitable for the model are selected.

[0028] The connecting member includes a base connecting rod 9 and an upper connecting rod 10. Two base connecting rods 9 are provided, and connect the left tooling body 1 and the right tooling body 2. The rod bodies 3 constituting the left tooling body 1 and the right tooling body 2 are both hollow, and a plurality of second threaded holes are provided on the opposite ends of the rod bodies 3 on the left and right sides, and first threaded holes are provided at both ends of the base connecting rod 9. The two ends of the base connecting rod 9 are respectively inserted into the rod bodies 3 on the left and right sides, and bolts are screwed into the corresponding first threaded holes and second threaded holes to fix the base connecting rod 9 and the rod bodies 3 constituting the connecting portion.

[0029] There are multiple upper connecting rods 10 with different lengths. There are two upper connecting rods 10 of the same length. Threaded holes are also provided on the reinforcing rod 4 and the rod body 3 at the top of the mounting portion. Threaded holes are also provided on the upper connecting rod 10. By aligning the threaded holes and screwing in bolts, the two upper connecting rods 10 of the same length can be fixed between the two reinforcing rods 4 and the two top rod bodies 3, thereby fixing the entire tooling.

[0030] The welding methods in this embodiment are all double-protection welding methods. In this embodiment, the rod body 3, the reinforcing rod 4, the base connecting rod 9, the upper connecting rod 10, and the mounting rod 6 are all made of 45# steel or Q345 square steel. This embodiment uses 45# steel.

[0031] The specific implementation process is as follows:

[0032] According to the size of the car door, slide the base connecting rod 9, and use bolts to tighten and connect the two ends of the base connecting rod 9 to the left tool body 1 and the right tool body respectively to achieve position fixation; then select an upper connecting rod 10 of appropriate length, and connect the upper connecting rod 10 to the left tool body 1 and the right tool body 2 to ensure that it adapts to the size of the car door. Then weld the two sides of the car door to the lock mounting seat 7 and the hinge mounting seat 8 respectively to fix the car door, and then perform an impact test. In this installation method, after the test is completed, it is sufficient to destroy the parts of the lock mounting seat 7 and the hinge mounting seat 8 that are in contact with the car door, without damaging the tool itself, so the tool can be reused.

[0033] When the door is installed on the vehicle, it is also connected through three points, two hinge connection points on one side and a lock connection point on the corresponding side. Therefore, this tooling can directly replace the scene where the door is installed on the vehicle, thereby making the test data more realistic and providing a real data basis for subsequent research and improvements.

[0034] Embodiment 2:

[0035] The difference between Example 2 and Example 1 is that Figure 2 As shown, the base 11 and the positioning seat 13 are also included. The positioning seat 13 is fixed to the ground by a grounding bolt. A slide groove 14 is arranged on the upper surface of the positioning seat 13 in a transverse direction. A slider 12 is fixed to the bottom of the base 11 and is slidably connected to the slide groove 14. A stopper 15 is also arranged on the right side of the slider 12 on the positioning seat 13 to limit the sliding of the slider 12. Figure 3 As shown, the limiting member 15 includes a lever hinged on the positioning seat 13, which can realize the lever rotating around the hinge point. The hinge point between the lever and the positioning seat 13 is located at the top (with Figure 3 As an example, the lower part of the lever covers the slide slot and blocks the slider 12; a pull rope 17 is fixed to the upper part of the lever, and a tension machine 16 is also fixed to the positioning seat 13. The end of the pull rope 17 away from the lever is fixed to the tension machine 16. The tension of the tension machine 16 on the pull rope 17 is set according to actual needs. The left tool body 1 and the right tool body 2 are both installed on the base 11 by bolts.

[0036] The specific implementation process is as follows:

[0037] When performing an impact test, the technical solution provided in this embodiment can more accurately reflect the situation of the door being installed on the whole vehicle. The impact test equipment gives the door an impact force to the right, so that the door is subjected to the impact force, and at this time the tooling is also subjected to the impact force. When the impact force is large, the impact force overcomes the tension of the pull rope 17 given by the tensile machine 16, which will cause the lever to rotate, and then the slider 12 drives the base 11 to slide along the positioning seat 13, and at this time the entire tooling will also drive the door to move. In the actual accident scene, the moving position of the whole vehicle will be different according to different impact forces. Therefore, the technical solution provided in this embodiment can better adapt to the scene where the door is installed on the whole vehicle and is subjected to impact, thereby improving the authenticity and applicability of the experimental data.

[0038] For those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of this patent and the practicality of the patent.

Claims

1. A vehicle door interior panel test fixture, comprising two fixture bodies and a connecting piece for connecting the two fixture bodies, characterized in that: One of the tooling bodies is provided with a lock mounting seat, and the other tooling body is provided with two hinge mounting seats; it also includes a base and a positioning seat, the positioning seat is fixed to the ground, the upper surface of the positioning seat is provided with a slide groove in the horizontal direction, and the bottom of the base is fixed with a slider slidably connected to the slide groove; the positioning seat is also provided with a limiter on the right side of the slider to limit the sliding of the slider, the limiter includes a lever hinged on the positioning seat and capable of rotating around the hinge point, the lower part of the lever covers the slide groove and blocks the slider; a pull rope is fixed to the upper part of the lever, and a tensile machine is also fixed on the positioning seat, the end of the pull rope away from the lever is fixed to the tensile machine, and the tensile machine applies a pulling force to the pull rope; the two tooling bodies are both mounted on the base by bolts; when the impact force overcomes the limitation of the lever on the sliding of the slider, the slider drives the base to slide along the positioning seat and drives the car door to move.

2. A vehicle door interior panel testing fixture according to claim 1, characterized in that: The connecting member comprises a base connecting rod, both ends of which are provided with first threaded holes, the bottoms of the two tooling bodies are provided with a plurality of second threaded holes which can be matched with the first threaded holes, and bolts are arranged in the first threaded holes.

3. A vehicle door interior panel testing fixture according to claim 2, characterized in that: The two tooling bodies each include a vertical mounting portion and a horizontal connecting portion, and the lock mounting seat and the hinge mounting seat are respectively arranged on the mounting portions of the two tooling bodies, and the mounting portions are in the shape of a right-angled trapezoid.

4. A vehicle door interior panel testing fixture according to claim 3, characterized in that: The connecting member also includes two upper connecting rods, and two ends of the two upper connecting rods are connected to the two tooling bodies through bolts.

5. A vehicle door interior panel testing fixture according to claim 4, characterized in that: The lock mounting seat and the hinge mounting seat are both connected to the tooling body through bolts.

6. A vehicle door interior panel testing fixture according to claim 5, characterized in that: The tool body and the connecting parts are both made of 45# steel or Q345 square steel.

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