A sliding door test bench simulating real vehicle working conditions

Abstract

This invention proposes a sliding door test bench simulating real vehicle operating conditions, comprising: a vehicle frame, an upper guide rail, a middle guide rail, a lower guide rail, and a simulated vehicle door. The upper, middle, and lower guide rails are all installed inside the vehicle frame. The simulated vehicle door is equipped with an upper drive arm, a middle drive arm, and a lower drive arm at its upper, middle, and lower portions, respectively. This invention simulates the operating conditions of a sliding door by setting multiple guide rails within the vehicle frame and connecting the simulated vehicle door to the guide rails. The simulated vehicle door is equipped with universal wheel assemblies at its upper and lower portions, which generate frictional resistance when the simulated door moves, thus simulating the resistance experienced by a real vehicle door during operation. Furthermore, the downward pressure can be adjusted to simulate the gravity experienced by the door, allowing the door lock and the lower drive mechanism assembly to be tested in a more realistic simulated environment, improving the accuracy of the simulation test.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive door lock testing equipment, and in particular to a sliding door test bench that simulates real vehicle conditions. Background Technology

[0002] Electric sliding doors for automobiles are mainly used in various MPVs, buses, and other vehicle models. The simulated test benches are primarily used to verify the functional indicators of the electric sliding door system under various high and low temperature conditions. An electric sliding door system consists of a drive unit, an electric door lock unit, an anti-pinch mechanism unit, and a control system, among other components. These components and units have complex logical relationships with each other. Therefore, static testing of individual components and units alone cannot verify the various logical relationships between them or the function of the entire electric sliding door system. Only by installing it on a real vehicle can the logical relationships between the units be verified. The automotive industry has high and low temperature durability testing requirements for electric door locks or electric sliding doors, with a standard temperature range of -40 degrees Celsius to +80 degrees Celsius. Currently, the testing equipment used for electric sliding doors is relatively large, specifically a full-size simulated test bench based on the dimensions of a complete vehicle or a real vehicle body. During testing, the entire vehicle or test bench must be driven into or placed in a high and low temperature test chamber for high and low temperature functional and durability tests. The construction cost of such a test chamber is high, and most component factories cannot afford such high expenses. Currently, the simulated car doors on commercially available small car door test benches use a thick steel plate to achieve the weight of a real car door. This results in the simulated door's center of gravity being different from that of a real car. Furthermore, the thick steel plate cannot simulate the sliding resistance experienced when a real car door opens and closes, thus failing to truly simulate the smoothness of a real car's operation. Utility Model Content

[0003] To address the aforementioned issues, this invention proposes a sliding door test bench that simulates real vehicle operating conditions. By simulating the weight and sliding resistance of the door by installing adjustable damping devices on the upper and lower parts of the simulated car door, the door lock can be tested under more realistic operating conditions.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model proposes a sliding door test bench simulating real vehicle working conditions, comprising: a vehicle body frame, an upper guide rail, a middle guide rail, a lower guide rail, and a simulated vehicle door. The upper, middle, and lower guide rails are all installed inside the vehicle body frame. The simulated vehicle door is provided with an upper wheel arm, a middle wheel arm, and a lower wheel arm at its upper, middle, and lower parts, respectively. The upper, middle, and lower wheel arms are slidably connected to the upper, middle, and lower guide rails, respectively. The upper and lower parts of the vehicle body frame are provided with a top plate and a bottom plate, respectively. The upper and lower parts of the simulated vehicle door are provided with universal wheel assemblies, respectively. The simulated vehicle door is pressed tightly against the top plate and the bottom plate by the universal wheel assemblies.

[0006] Furthermore, the vehicle body test bench is equipped with a door lock to be tested, and the simulated door is equipped with a locking bar. The simulated door is connected to the door lock to be tested through the locking bar.

[0007] Furthermore, the lower drive arm is the lower drive mechanism assembly to be tested, and a rack is provided in the lower guide rail. The lower drive mechanism assembly to be tested is connected to the rack in the lower guide rail through gears.

[0008] Furthermore, the upper and lower parts of the vehicle body platform are provided with spring rods perpendicular to the simulated car door. When the simulated car door slides to the closed state, one side of the simulated car door is pressed tightly against the end of the spring rod.

[0009] Furthermore, the spring rod includes a first spring, a screw, and a locking nut. One end of the first spring is fixed to the screw, the screw is connected to the vehicle frame via threads, and the locking nut is fixed to the screw via threads.

[0010] Furthermore, the omnidirectional wheel assembly has multiple damping protrusions embedded in it, and the omnidirectional wheel assembly slides on the top plate and the bottom plate through the damping protrusions.

[0011] Furthermore, the upper part of the simulated car door is provided with an L-shaped plate, which is slidably connected to the simulated car door through a sliding groove. A sliding member is provided on the L-shaped plate, and a universal wheel assembly is installed on the upper part of the sliding member. The lower part of the sliding member is slidably connected to the L-shaped plate, and a second spring is provided between the sliding member and the L-shaped plate.

[0012] Furthermore, the slide is provided with a connecting block, the connecting block has a threaded hole, the threaded hole has an adjusting bolt, the middle part of the adjusting bolt is connected to the threaded hole, and the upper end of the adjusting bolt rests on the lower part of the L-shaped plate.

[0013] The beneficial effects of this utility model are as follows: By setting multiple guide rails in the vehicle chassis frame to simulate the connection between the car door and the guide rails, the working conditions of the sliding door are simulated. The upper and lower parts of the simulated car door are equipped with universal wheel assemblies, which can generate frictional resistance when the simulated car door moves, thereby simulating the resistance experienced by the door of a real vehicle during operation. Furthermore, the downward pressure can be adjusted to simulate the gravity experienced by the door, so that the door lock and the lower drive mechanism assembly to be tested can be tested in a more realistic simulation environment, thereby improving the accuracy of the simulation test. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of one side of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure on the other side of this utility model;

[0016] Figure 3 This is a schematic diagram of the connection between the guide rail and the simulated car door of this utility model;

[0017] Figure 4 This is a schematic diagram of the spring rod of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the simulated car door of this utility model;

[0019] In the diagram: 1-Vehicle chassis frame, 2-Upper guide rail, 3-Middle guide rail, 4-Lower guide rail, 5-Simulated door, 6-Upper wheel arm, 7-Middle wheel arm, 8-Lower wheel arm, 9-Top plate, 10-Bottom plate, 11-Universal wheel assembly, 12-Door lock to be tested, 13-Lock rod, 14-Spring rod, 15-First spring, 16-Screw, 17-Anti-loosening nut, 18-L-shaped plate, 19-Slide groove, 20-Sliding component, 21-Second spring, 22-Connecting block, 23-Adjusting bolt. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Throughout the description, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0023] like Figures 1 to 5As shown, an embodiment of this utility model provides a sliding door test bench simulating real vehicle conditions, including: a vehicle body frame 1, an upper guide rail 2, a middle guide rail 3, a lower guide rail 4, and a simulated vehicle door 5. The upper guide rail 2, the middle guide rail 3, and the lower guide rail 4 are all installed inside the vehicle body frame 1. The simulated vehicle door 5 is provided with an upper wheel arm 6, a middle wheel arm 7, and a lower wheel arm 8 at its upper, middle, and lower parts, respectively. The upper wheel arm 6, the middle wheel arm 7, and the lower wheel arm 8 are slidably connected to the upper guide rail 2, the middle guide rail 3, and the lower guide rail 4, respectively. The upper and lower parts of the vehicle body frame 1 are provided with a top plate 9 and a bottom plate 10, respectively. The upper and lower parts of the simulated vehicle door 5 are provided with universal wheel assemblies 11, respectively. The simulated vehicle door 5 is pressed tightly onto the top plate 9 and the bottom plate 10 by the universal wheel assemblies 11.

[0024] The upper guide rail 2, middle guide rail 3, lower guide rail 4, upper drive wheel arm 6, middle drive wheel arm 7, and lower drive wheel arm 8 of this device are all installed using parts from actual vehicles. This device is mainly used for reliability testing of the door lock 12 and the lower drive mechanism assembly under test under high and low temperature conditions. Before the test, the door lock 12 and the lower drive mechanism assembly under test are installed on the vehicle body frame 1 and the simulated door 5. The entire test bench is placed in a cold storage or high temperature room. Then, the motor in the lower drive mechanism assembly under test is started by the controller. The motor and gear drive the simulated door 5 to slide on the guide rail to realize the opening and closing simulation of the door. When the simulated door 5 slides to the closed position, the locking rod 13 on the simulated door 5 enters the door lock 12 under test. According to the set program logic, the door lock 12 under test closes the simulated door 5 to the fully locked position. Conversely, upon receiving an opening command, according to the set program logic, the door lock 12 under test unlocks, the motor in the drive mechanism assembly under test reverses, driving the simulated door 5 to move, thus realizing the opening action. The test bench occupies little space, and the space requirements for the testing site are smaller than those for actual vehicle testing, reducing the testing costs for enterprises.

[0025] When the simulated door 5 slides, the universal wheel assembly 11 can press tightly against the top plate 9 and the bottom plate 10, thereby generating resistance in the opposite direction of movement, simulating the resistance encountered by the door when sliding under actual working conditions. Furthermore, the universal wheel assembly 11 on the upper part of the simulated door 5 can adjust the pressure by adjusting the bolt 23, thereby obtaining a downward reaction force, simulating the gravity on the door, so that the door lock 12 under test and the lower drive mechanism assembly under test can be tested under more realistic working conditions.

[0026] In one specific embodiment, a door lock 12 to be tested is provided on the vehicle body test bench 1, and a locking bar 13 is provided on the simulated door 5. The simulated door 5 is connected to the door lock 12 to be tested through the locking bar 13, so that the door lock 12 to be tested can be tested in high and low temperature environments.

[0027] In a preferred embodiment, such as Figure 3As shown, the lower drive arm 8 is the lower drive mechanism assembly to be tested. The lower guide rail 4 is equipped with a rack. The lower drive mechanism assembly to be tested is connected to the rack in the lower guide rail 4 through a gear. The lower drive mechanism assembly to be tested is the device that drives the sliding door to move on the actual vehicle. The lower drive mechanism assembly to be tested is installed on the simulated car door 5 and is used to drive the simulated car door 5 to slide. In the test environment, it can automatically open and close the door without manual testing.

[0028] Preferably, such as Figure 2 , Figure 4 As shown, the upper and lower parts of the vehicle body platform 1 are equipped with spring rods 14 perpendicular to the simulated car door 5. When the simulated car door 5 slides to the closed state, one side of the simulated car door 5 is pressed tightly against the end of the spring rod 14. The spring rod 14 is mainly used to simulate the force of the sealing strip on the car door when the door is closed, thereby improving the realism of the simulation.

[0029] Specifically, such as Figure 4 As shown, the spring rod 14 includes a first spring 15, a screw 16, and a locking nut 17. One end of the first spring 15 is fixed to the screw 16. The screw 16 is connected to the vehicle body frame 1 by threads. The locking nut 17 is fixed to the screw 16 by threads. By adjusting the screw 16, the compression deformation of the first spring 15 when the simulated door 5 is closed can be adjusted, thereby adjusting the elastic force on the door and improving the realism of the simulation.

[0030] In a preferred embodiment, such as Figure 5 As shown, the universal wheel assembly 11 has multiple damping protrusions embedded in it. The universal wheel assembly 11 slides on the top plate 9 and the bottom plate 10 through the damping protrusions. When it slides on the top plate 9 and the bottom plate 10 through the damping protrusions, it generates frictional force, thereby simulating the resistance that the car door experiences when opening and closing under real conditions.

[0031] Specifically, such as Figure 5 As shown, the simulated car door 5 has an L-shaped plate 18 on its upper part. The L-shaped plate 18 is slidably connected to the simulated car door 5 through a slide groove 19. The L-shaped plate 18 has a sliding member 20. The universal wheel assembly 11 is installed on the upper part of the sliding member 20, and the lower part of the sliding member 20 is slidably connected to the L-shaped plate 18. A second spring 21 is provided between the sliding member 20 and the L-shaped plate 18.

[0032] In a preferred embodiment, the slide 19 is provided with a connecting block 22, the connecting block 22 is provided with a threaded hole, the threaded hole is provided with an adjusting bolt 23, the middle part of the adjusting bolt 23 is connected to the threaded hole, and the upper end of the adjusting bolt 23 rests on the lower part of the L-shaped plate 18.

[0033] The deformation of the second spring 21 can be adjusted by adjusting the adjusting bolt 23, thereby adjusting the pressure on the universal wheel assembly 11 and the sliding resistance. At the same time, the second spring 21 will give the simulated door 5 a downward reaction force, simulating the weight of the door. The resistance encountered by the simulated door 5 when sliding can be measured by manually pulling the door using the current of the drive mechanism assembly under test or by a force gauge. During the test, the resistance encountered by the simulated door 5 when sliding is made to approximate the situation of a real vehicle, thereby improving the realism of the test.

[0034] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A sliding door test bench simulating real vehicle operating conditions, characterized in that, include: The vehicle body frame (1), upper guide rail (2), middle guide rail (3), lower guide rail (4), and simulated car door (5) are provided. The upper guide rail (2), middle guide rail (3), and lower guide rail (4) are all installed inside the vehicle body frame (1). The simulated car door (5) is provided with upper wheel arm (6), middle wheel arm (7), and lower wheel arm (8) at its upper, middle, and lower parts, respectively. The upper wheel arm (6), middle wheel arm (7), and lower wheel arm (8) are connected and slidably connected to the upper guide rail (2), middle guide rail (3), and lower guide rail (4), respectively. The upper and lower parts of the vehicle body frame (1) are provided with a top plate (9) and a bottom plate (10), respectively. The upper and lower parts of the simulated car door (5) are provided with universal wheel assemblies (11), respectively. The simulated car door (5) is pressed tightly onto the top plate (9) and the bottom plate (10) through the universal wheel assemblies (11).

2. The sliding door test bench simulating real vehicle operating conditions according to claim 1, characterized in that, The vehicle body platform (1) is equipped with a door lock (12) to be tested, and the simulated door (5) is equipped with a locking rod (13). The simulated door (5) is connected to the door lock (12) to be tested through the locking rod (13).

3. The sliding door test bench simulating real vehicle operating conditions according to claim 2, characterized in that, The lower drive arm (8) is the lower drive mechanism assembly to be tested. The lower guide rail (4) is equipped with a rack. The lower drive mechanism assembly to be tested is connected to the rack in the lower guide rail (4) through a gear.

4. The sliding door test bench simulating real vehicle operating conditions according to claim 1, characterized in that, The vehicle body platform (1) is provided with spring rods (14) perpendicular to the simulated door (5) on both the upper and lower parts. When the simulated door (5) slides to the closed state, one side of the simulated door (5) is pressed tightly against the end of the spring rod (14).

5. A sliding door test bench simulating real vehicle operating conditions according to claim 4, characterized in that, The spring rod (14) includes a first spring (15), a screw (16), and a locking nut (17). One end of the first spring (15) is fixed on the screw (16). The screw (16) is connected to the vehicle frame (1) by threads, and the locking nut (17) is fixed on the screw (16) by threads.

6. The sliding door test bench simulating real vehicle operating conditions according to claim 1, characterized in that, The universal wheel assembly (11) has multiple damping protrusions embedded in it, and the universal wheel assembly (11) slides on the top plate (9) and the bottom plate (10) through the damping protrusions.

7. A sliding door test bench simulating real vehicle operating conditions according to claim 6, characterized in that, The simulated car door (5) has an L-shaped plate (18) on its upper part. The L-shaped plate (18) is slidably connected to the simulated car door (5) through a sliding groove (19). A sliding member (20) is provided on the L-shaped plate (18). A universal wheel assembly (11) is installed on the upper part of the sliding member (20), and the lower part of the sliding member (20) is slidably connected to the L-shaped plate (18). A second spring (21) is provided between the sliding member (20) and the L-shaped plate (18).

8. A sliding door test bench simulating real vehicle operating conditions according to claim 7, characterized in that, The slide (19) is provided with a connecting block (22), and the connecting block (22) is provided with a threaded hole. An adjusting bolt (23) is provided in the threaded hole. The middle part of the adjusting bolt (23) is connected to the threaded hole, and the upper end of the adjusting bolt (23) rests on the lower part of the L-shaped plate (18).

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