Static pressure rigidity test device for inner protective plate of automobile door

Abstract

The utility model provides an automobile door inner guard plate static pressure rigidity test device which comprises a base, a platform is installed on the upper surface of the base, supporting assemblies are installed on the two sides of the top of the platform, the two supporting assemblies comprise supporting frames, the two supporting frames clamp the two ends of an automobile door inner guard plate for fixation, and the two ends of the automobile door inner guard plate are fixedly connected with the platform. A bottom supporting assembly is arranged in the center of the platform and used for supporting the bottom, fixed by the supporting assembly, of the inner protection plate of the automobile door. According to the automobile door inner protection plate static pressure rigidity test device, automobile door inner protection plates of different models and sizes are supported and fixed by adjusting the distance between the supporting frames, the bottom supporting assembly supports the bottom of the automobile door inner protection plate in an attached mode, the movable characteristic does not affect deformation of the automobile door inner protection plate, the test influence is reduced, and the test efficiency is improved. Column collision rigidity tests can be carried out on automobile door inner protection plates of different models under different conditions, and interference factors influencing the tests are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts detection, in particular to a static pressure stiffness test device for an automobile door inner trim panel. Background Technique

[0002] Pole impact is an automobile safety test, mainly simulating the scenario in daily life when a vehicle loses control and side impacts a columnar object such as a lamp post or a big tree by the roadside. Before conducting a pole impact test on an automobile, a static pressure stiffness test needs to be carried out on the door inner trim panel first to verify whether the door inner trim panel will have an adverse impact on passengers when the pole impact occurs. Existing technologies and devices often have problems such as complex operation, low efficiency, and low precision. In addition, it is difficult for existing test devices to simulate the complex load conditions that the door inner trim panel is subjected to during the collision process of an actual vehicle, resulting in limited accuracy and application range of test results and being unable to conduct a stiffness test on the pole impact stiffness of the automobile door trim panel with the least interference. Content of the Utility Model

[0003] The purpose of the utility model is to provide a static pressure stiffness test device for an automobile door inner trim panel, which can conduct a pole impact stiffness test on the automobile door inner trim panel.

[0004] The utility model provides a static pressure stiffness test device for an automobile door inner trim panel, including a base. A platform is installed on the upper surface of the base. Support components are installed on both sides of the top of the platform. The two support components include support frames, and the support frames clamp the two ends of the automobile door inner trim panel for fixation. A bottom support component is arranged at the center of the platform, and the bottom support component supports the bottom of the automobile door inner trim panel fixed by the support components. A static pressure component is arranged at the rear of the base. The static pressure component includes an electric push rod and a cylinder installed at the output end of the electric push rod through a connection component. The electric push rod pushes the cylinder to contact and squeeze the automobile door inner trim panel.

[0005] As a further optimized scheme, the support component includes a hydraulic cylinder. The hydraulic cylinder is installed on the platform, and the support frame is installed at the output end of the hydraulic cylinder.

[0006] As a further optimized scheme, there are multiple groups of the bottom support components and they are connected to each other. The bottom support components include main rods. Rotating balls and ball seats are respectively installed at both ends of the main rods. The rotating balls on the adjacent bottom support components are clamped inside the ball seats. The bottom support components fill the center of the platform, and the positions of the bottom support components at both ends of the platform are stretched and limited by a dragging component.

[0007] As a further optimized scheme, the static pressure component includes a bracket. One end of the bracket is installed on the base, and the other end of the bracket is installed with an electric push rod.

[0008] As a further optimization solution, the connection component includes a sliding frame, a connection seat and a rotary cylinder. The sliding frame is installed on the outer wall of the output end of the electric push rod. The connection seat is installed on the outer wall of the cylinder. The rotary cylinder is installed at the bottom of the output end of the electric push rod. A runner is slidably installed on the sliding frame. A rotating rod is installed on the runner. An insertion rod and a force-bearing seat are installed at the bottom of the rotating rod. The output end of the rotary cylinder is installed with a push rod. A socket tube is installed on the inner wall of the connection seat. The insertion rod is inserted into the socket tube.

[0009] As a further optimization solution, there are multiple groups of the dragging components, which are installed on the platform corresponding to the positions of the bottom supporting components. The dragging component includes a support frame. A rotating shaft is installed on the support frame. A roller is fixedly connected to the outer wall of the rotating shaft. A pulling rope is wound around the outer wall of the roller. The pulling rope is connected to a main rod located outside the platform.

[0010] As a further optimization solution, the materials of the rotating ball and the ball seat are engineering plastics.

[0011] As a further optimization solution, the bottom supporting component forms a movable surface at the center of the platform.

[0012] As a further optimization solution, the outer wall surface of the pulling rope is a rough surface.

[0013] The utility model provides a static pressure stiffness test device for an inner door panel of an automobile through improvement. Compared with the prior art, it has the following improvements and advantages: This static pressure stiffness test device for an inner door panel of an automobile can adjust the distance between the support frames to support and fix different models and sizes of inner door panels of automobiles. The bottom supporting component fits and supports the bottom of the inner door panel of the automobile. The movable feature does not affect the deformation of the inner door panel of the automobile, reducing the experimental influence. Under the thrust of the electric push rod in the static pressure component, the cylinder is driven to contact the inner door panel of the automobile for a column collision experiment. The push rod can change according to the deformation of the inner door panel of the automobile. By observing the thrust and elongation distance generated by the electric push rod, the stress intensity of the inner door panel of the automobile can be known. Moreover, with the feature that the pressing cylinder can be replaced, column collision stiffness tests can be carried out on inner door panels of different models of automobiles under different conditions, and the interference factors affecting the test are reduced. Description of the Drawings

[0014] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a structural schematic diagram of the present utility model;

[0016] Figure 2 This is a schematic structural diagram of the platform, bottom support assembly, and support assembly of the present utility model;

[0017] Figure 3 This is a schematic structural diagram of the support assembly of the present utility model;

[0018] Figure 4 This is a schematic structural diagram of a single bottom support assembly of the present utility model;

[0019] Figure 5 This is a schematic structural diagram of the dragging assembly of the present utility model;

[0020] Figure 6 This is a schematic structural diagram of the connection assembly of the present utility model;

[0021] Figure 7 This is a schematic structural diagram of the connection between the electric push rod and the cylinder of the present utility model.

[0022] Explanation of reference numerals:

[0023] 1 - Base, 2 - Hydrostatic pressure assembly, 21 - Bracket, 22 - Electric push rod, 23 - Cylinder, 3 - Connection assembly, 31 - Sliding frame, 32 - Runner, 33 - Rotating rod, 34 - Insertion rod, 35 - Force - receiving seat, 36 - Push rod, 37 - Rotary cylinder, 38 - Connection seat, 39 - Insertion tube, 4 - Platform, 5 - Support assembly, 51 - Hydraulic cylinder, 52 - Support frame, 6 - Bottom support assembly, 61 - Main rod, 62 - Rotating ball, 63 - Ball seat, 7 - Dragging assembly, 71 - Support frame, 72 - Rotating roller, 73 - Pulling rope, 74 - Rotating shaft. Detailed implementation manners

[0024] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0026] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined. In addition, the terms "mounted", "connected" and "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Please refer to Figure 1-7 , the present utility model provides a technical solution for a static pressure stiffness test device for an automotive door inner panel,

[0028] As Figure 1 shown, it includes a base 1, a platform 4 is installed on the upper surface of the base 1, support assemblies 5 are installed on both sides at the top of the platform 4. The two support assemblies 5 include support frames 52. The support frames 52 clamp the two ends of the automotive door inner panel for fixation. A bottom support assembly 6 is provided at the center of the platform 4. The bottom support assembly 6 supports the bottom of the automotive door inner panel fixed by the support assemblies 5. A static pressure assembly 2 is provided at the rear of the base 1. The static pressure assembly 2 includes an electric push rod 22 and a cylinder 23 installed at its output end through a connection assembly 3. The electric push rod 22 pushes the cylinder 23 to contact and extrude the automotive door inner panel.

[0029] The base 1 serves as the foundation of the device and plays the role of loading other components such as the platform 4, while the platform 4 provides a carrier for the support assemblies 5 and the bottom support assembly 6. As Figure 1 and Figure 2 shown in the positional relationship, the support assemblies 5 are provided at both ends of the platform 4. The two ends of the automotive door inner panel are supported by using the central cavity of the support frames 52. The position of the support frames 52 is adjustable, while the bottom support assembly 6 fills the middle cavity part of the platform 4 to lift the installed automotive door inner panel to prevent it from being suspended. As Figure 1 shown in the static pressure assembly 2, after the automotive door inner panel is installed, the electric push rod 22 in the static pressure assembly 2 extends to drive the cylinder 23 to apply static pressure to the automotive door inner panel. Due to the action of the connection assembly 3, the installation of the cylinder 23 on the electric push rod 22 is detachable.

[0030] Combined with Figures 1 to 4, when facing the inner door panels of cars with different models and sizes, the distance between the adjusting support frames 52 is adjusted for support and fixation. The bottom of the inner door panel of the car is fitted and supported by the bottom support assembly 6. Under the thrust of the electric push rod 22 in the static pressure assembly 2, the cylinder is driven to contact the inner door panel of the car for a column collision experiment. According to the deformation change of the inner door panel of the car, it can be observed that the thrust generated by the electric push rod 22 and the elongation distance can be used to know the stress intensity of the inner door panel of the car, so as to complete the work of testing the static pressure stiffness of the inner door panel of the car.

[0031] As Figure 3 shown, the support assembly 5 includes a hydraulic cylinder 51. The hydraulic cylinder 51 is installed on the platform 4, and the support frame 52 is installed at the output end of the hydraulic cylinder 51.

[0032] There is a space in the center of the support frame 52 in the support assembly 5, and the space is for the edge of the inner door panel of the car to be snapped in for support and fixation. Both sides of the support frame 52 are controlled by the hydraulic cylinder 51, and thus the distance between the support frames 52 can be adjusted.

[0033] As Figure 2 shown, the distance between the two support frames 52 is the size for supporting and fixing the inner door panel of the car, and the distance between them is controlled by the expansion and contraction of the hydraulic cylinder 51 to realize the fixation of inner door panels of different sizes of cars.

[0034] As Figures 1 to 4 shown, there are multiple bottom support assemblies 6 and they are connected to each other, that is, individual entities form an entire area, including a main rod 61. Rotating balls 62 and ball seats 63 are respectively installed at both ends of the main rod 61. The rotating balls 62 on the bottom support assemblies 6 close to each other are clamped inside the ball seats 63. The bottom support assemblies 6 fill the center of the platform 4, and the positions of the bottom support assemblies 6 at both ends of the platform 4 are stretched and limited by the dragging assembly 7.

[0035] In contrast Figure 4 , the main rod 61 serves as the main body of the bottom support assembly 6 and carries the rotating ball 62 and the ball seat 63. When two bottom support assemblies 6 are connected, the rotating ball 62 is inserted inside the ball seat 63 and can rotate, that is, the connection between every two bottom support assemblies 6 is in a movable state.

[0036] For example, when the inner door panel of the car is under static pressure, in order not to affect the stiffness test, after the inner door panel of the car deforms, it deforms along with the bottom support assembly 6. Due to the movable characteristics of the bottom support assembly, it does not affect the deformation of the inner door panel of the car, meeting the requirement of being able to lift the inner door panel of the car without affecting the test results.

[0037] As Figure 1 shown, the static pressure assembly 2 includes a bracket 21. One end of the bracket 21 is installed on the base 1, and the other end of the bracket 21 is installed with an electric push rod 22.

[0038] The electric push rod 22 adopted is a high-precision electric push rod, which can accurately control the elongation distance to meet the more precise extrusion of the inner door panel of the car.

[0039] Such as Figure 1 , Figure 6 and Figure 7 As shown, the connecting component 3 includes a sliding frame 31, a connecting seat 38 and a rotary cylinder 37. The sliding frame 31 is installed on the outer wall of the output end of the electric push rod 22, the connecting seat 38 is installed on the outer wall of the cylinder 23, the rotary cylinder 37 is installed at the bottom of the output end of the electric push rod 22. A runner 32 is slidably installed on the sliding frame 31. A rotating rod 33 is installed on the runner 32. A plug rod 34 and a force-bearing seat 35 are installed at the bottom of the rotating rod 33. The output end of the rotary cylinder 37 is installed with a push rod 36. An insertion tube 39 is installed on the inner wall of the connecting seat 38. The plug rod 34 is inserted into the insertion tube 39.

[0040] Figure 6 In, the rotating rod 33 drives the runner to slide on the sliding frame 31, drives the plug rod 34 to move and insert into the inside of the insertion tube 39. After the rotary cylinder 37 rotates, it drives the push rod 36 to rotate. The push rod 36 pushes the force-bearing seat 35 to drive the rotating rod 33 to move, which is the power to drive the plug rod 34 to move. After the rotary cylinder 37 rotates in the reverse direction, the fixing of the plug rod 34 inserted into the insertion tube 39 is stopped, and the electric push rod 22 can be separated from the connecting seat 38.

[0041] Such as Figure 7 As shown, the state where the plug rod 34 is inserted into the insertion tube 39 can realize the installation of the electric push rod 22 and the connecting seat 8, that is, the installation with the cylinder 23. When the insertion is stopped, the electric push rod 22 and the cylinder 23 can be separated, so that the installation and disassembly can be carried out between the two to replace the cylinder 23 with different diameters for the stiffness test.

[0042] Such as Figure 5 As shown, there are multiple groups of dragging components 7, and they are installed on the platform 4 corresponding to the position of the bottom supporting component 6. The dragging component 7 includes a support frame 71. A rotating shaft 74 is installed on the support frame 71. A roller 72 is fixedly connected to the outer wall of the rotating shaft 74. A pulling rope 73 is wound around the outer wall of the roller 72. The pulling rope 73 is connected to the main rod 61 located outside the platform 4.

[0043] The multiple groups of rotating shafts 74 are integrated. When the rotating shaft 74 rotates, all the rollers 72 rotate, driving the pulling rope 73 to wind up. The pulling rope 73 pulls the main rod 61 to reset, so that the deformed bottom supporting component 6 is reset to a flat state. When the bottom supporting component 6 deforms, the pulling rope 73 can be pulled out from the outer wall of the roller 72 to adapt to the deformation.

[0044] In some embodiments, the materials of the rotating ball 62 and the ball seat 63 are engineering plastics. Engineering plastics have relatively high strength and long service life.

[0045] In some embodiments, the bottom support assembly 6 makes the center of the platform 4 form a movable surface, and the movable surface will not interfere with the deformation of the inner door panel of the vehicle.

[0046] In some embodiments, the outer wall surface of the pull rope 73 is a rough surface, and the rough surface can increase the friction force and the pulling force on the bottom support assembly 6.

[0047] The working principle of the present utility model will be described below with a preferred embodiment. Adjust the distance between the support frames 52 to support and fix inner door panels of different sizes of vehicles. The bottom support assembly 6 fits and supports the bottom of the inner door panel of the vehicle. Driven by the thrust of the electric push rod 22 in the static pressure assembly 2, the cylinder contacts the inner door panel of the vehicle to conduct a column collision experiment. According to the deformation change of the inner door panel of the vehicle, it can be observed that the thrust and elongation distance generated by the electric push rod 22 can be used to know the stress intensity of the inner door panel of the vehicle. After the inner door panel of the vehicle deforms, it deforms along the bottom support assembly 6. Due to the movable characteristic of the bottom support assembly, it does not affect the deformation of the inner door panel of the vehicle, meeting the requirement of being able to lift the inner door panel of the vehicle without affecting the test results. The installation and disassembly of the electric push rod 22 and the cylinder 23 are used to replace the cylinder 23 with different diameters for the stiffness test.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An automotive door inner trim static stiffness test device, characterized in that, It includes a base (1), a platform (4) is installed on the upper surface of the base (1), support components (5) are installed on both sides of the top of the platform (4), the support components (5) include support frames (52), and the two support frames (52) clamp the two ends of the inner door panel of the car for fixation. A bottom support component (6) is provided at the center of the platform (4), and the bottom support component (6) supports the bottom of the inner door panel of the car fixed by the support components (5). A static pressure component (2) is provided at the rear of the base (1), and the static pressure component (2) includes an electric push rod (22) and a cylinder (23) installed at its output end through a connection component (3), and the electric push rod (22) pushes the cylinder (23) to contact and press against the inner door panel of the car.

2. The static pressure stiffness test device for an automotive door inner panel according to claim 1, wherein The support component (5) includes a hydraulic cylinder (51), the hydraulic cylinder (51) is installed on the platform (4), and the support frame (52) is installed at the output end of the hydraulic cylinder (51).

3. The static pressure stiffness test device for an automobile door inner trim panel according to claim 1, characterized in that, There are multiple groups of the bottom support components (6) and they are connected to each other. It includes a main rod (61), a rotating ball (62) and a ball seat (63) are respectively installed at both ends of the main rod (61). The rotating ball (62) on the bottom support component (6) close to each other is stuck inside the ball seat (63). The bottom support component (6) fills the center of the platform (4), and the positions of the bottom support component (6) at both ends of the platform (4) are stretched and limited by a dragging component (7).

4. The static pressure stiffness test device for an automotive door inner trim panel according to claim 1, characterized in that, The static pressure component (2) includes a bracket (21), one end of the bracket (21) is installed on the base (1), and the other end of the bracket (21) installs the electric push rod (22).

5. The static pressure stiffness test device for an automotive door inner panel according to claim 4, wherein, The connection component (3) includes a sliding frame (31), a connection seat (38) and a rotating cylinder (37). The sliding frame (31) is installed on the outer wall of the output end of the electric push rod (22), the connection seat (38) is installed on the outer wall of the cylinder (23), the rotating cylinder (37) is installed at the bottom of the output end of the electric push rod (22). A rotating wheel (32) is slidably installed on the sliding frame (31), a rotating rod (33) is installed on the rotating wheel (32), a plug rod (34) and a force-bearing seat (35) are installed at the bottom of the rotating rod (33), a push rod (36) is installed at the output end of the rotating cylinder (37), a plug tube (39) is installed on the inner wall of the connection seat (38), and the plug rod (34) is inserted into the plug tube (39).

6. The static pressure stiffness test device for an automotive door inner panel according to claim 3, characterized in that, There are multiple groups of the dragging components (7), and they are installed on the platform (4) corresponding to the positions of the bottom support components (6). The dragging component (7) includes a support frame (71), a rotating shaft (74) is installed on the support frame (71), a rotating roller (72) is fixedly connected to the outer wall of the rotating shaft (74), a pulling rope (73) is wound around the outer wall of the rotating roller (72), and the pulling rope (73) is connected to the main rod (61) outside the platform (4).

7. An automotive door inner panel static stiffness test device according to claim 3, characterized in that The materials of the rotating ball (62) and the ball seat (63) are engineering plastics.

8. The static pressure stiffness test device for an automotive door inner panel according to claim 1, characterized in that, The bottom support component (6) forms a movable surface at the center of the platform (4).

9. The static pressure stiffness test device for an automobile door inner panel according to claim 6, characterized in that The outer wall surface of the pulling rope (73) is a rough surface.

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