Endurance test device for vehicle door hinge

Abstract

The utility model relates to the technical field of test benches, and discloses a durability test device for vehicle door hinges, which comprises a workbench, a U-shaped frame is fixedly connected to one fixed side of the top of the workbench, two sliding rods are fixedly connected between the top and the bottom of the inner side of the U-shaped frame, and the circumferential surfaces of the two sliding rods are slidably connected with the same L-shaped block. Round holes matched with the sliding rods are formed in the two ends of the top of the L-shaped block, an electric telescopic rod is fixedly connected to the bottom of the inner side of the U-shaped frame, the top of the electric telescopic rod is fixedly connected to the top of the L-shaped block, the electric telescopic rod is arranged to facilitate installation of a hinge, a notch is formed in the bottom of the side, away from the U-shaped frame, of the L-shaped block, and a lifting block is slidably connected into the notch. And two guide rods are fixedly connected between the top and the bottom of the notch. According to the utility model, the balance weight problem of the hinge in the use scene can be restored more truly, so that the experimental data is more appropriate and persuasive, and the technical effects of improving the accuracy of the experiment are achieved.

Description

Technical Field

[0001] This utility model relates to the field of test bench technology, and in particular to a durability testing device for car door hinges. Background Technology

[0002] Door hinges are crucial components connecting car doors to the vehicle body. They allow the door to rotate freely around a fixed axis during opening and closing, bear the weight of the door, and maintain its stability in different positions. Their structure typically includes a fixed base, a movable arm, and a pivot pin. Their quality and performance directly affect the smoothness and safety of door opening and closing, as well as the durability of the entire vehicle. A search revealed Chinese patent CN220170505U, which discloses a door hinge test bench, belonging to the field of test bench technology. This door hinge test bench includes a worktable with a fixed plate on its top and an arc-shaped sliding groove on the top. This invention, through the arrangement of a first threaded rod, a movable plate, a U-shaped fixed frame, a T-shaped mounting block, a second threaded rod, and a mounting rod, facilitates positioning for hinges of different specifications, thereby expanding the applicability of the device. After the half gear drives the arc-shaped rack to rotate, the spring force pulls the connecting shaft back to its original position, causing the arc-shaped rack to return to its original position. The half gear then drives the arc-shaped rack to rotate again, thus maintaining the reciprocating motion of the connecting shaft, which in turn drives the connecting plate to rotate, facilitating durability testing of the hinge.

[0003] The aforementioned door hinge test bench has the following shortcomings: the device performs durability tests on the hinge by repeatedly bending and restoring it after it is installed and positioned. However, in real life, one end of the hinge is fixed to the car and the other end is fixed to the door. Due to the weight of the door, the hinge is subjected to a large force. The test bench does not simulate the stress on the hinge in real use, resulting in inaccurate test data. Therefore, a durability test device for door hinges has been designed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a durability testing device for car door hinges.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A durability testing device for a car door hinge includes a workbench. A U-shaped frame is fixedly connected to one side of the top of the workbench. Two sliding rods are fixedly connected between the top and bottom of the inner side of the U-shaped frame. The same L-shaped block is slidably connected to the circumferential surface of the two sliding rods. Circular holes adapted to the sliding rods are opened at both ends of the top of the L-shaped block. An electric telescopic rod is fixedly connected to the bottom of the inner side of the U-shaped frame, and the top of the electric telescopic rod is fixedly connected to the top of the L-shaped block. The electric telescopic rod facilitates the installation of the hinge. A slot is opened at the bottom of the side of the L-shaped block away from the U-shaped frame. A lifting block is slidably connected in the slot. Two guide rods are fixedly connected between the top and bottom of the slot, and both guide rods slide through the lifting block. Circular holes adapted to the guide rods are opened at both ends of the lifting block. An arc-shaped plate is fixedly connected to the side of the lifting block away from the U-shaped frame. An arc-shaped T-shaped groove is opened at the top of the arc-shaped plate, and a slider is slidably connected in the arc-shaped T-shaped groove. An L-shaped plate is fixedly connected to the top of the slider.

[0007] As a further embodiment of this utility model, two insert rods are fixedly connected to the top of the L-shaped plate, and multiple counterweights are slidably sleeved on the circumferential surface of the two insert rods. The setting of the counterweights allows the self-weight of the car door to be simulated, thereby improving the accuracy of the experimental data.

[0008] As a further embodiment of this utility model, a fixing block is fixedly connected to one side of the L-shaped plate, and two first fixing holes are provided on the fixing block.

[0009] As a further embodiment of this utility model, a mounting column is fixedly connected to the top of the workbench near the fixing block, and two second fixing holes are opened on one side of the mounting column, and the second fixing holes are adapted to the first fixing holes.

[0010] As a further embodiment of this utility model, the bottom of the arc plate is provided with a second arc hole, the top of the workbench is provided with a first arc hole near the second arc hole, and the bottom of the slider is fixedly connected with a bottom rod, the bottom of the bottom rod passing through the second arc hole and the first arc hole.

[0011] As a further embodiment of this utility model, a swing rod is rotatably connected to the bottom of the workbench near the fixed block, and one end of the swing rod is rotatably connected to the bottom rod. The other end of the swing rod is provided with a strip-shaped hole. Through the cooperation of the strip-shaped hole and the L-shaped rod, the swing rod can swing back and forth, thereby driving the slider to slide back and forth along the arc-shaped T-shaped groove.

[0012] As a further embodiment of this utility model, an L-shaped bottom is fixedly connected to the bottom of the workbench near the strip hole, and a drive motor is fixedly connected to the top of the L-shaped bottom. The output end of the drive motor passes through the L-shaped bottom and is fixedly connected to a first gear. A rotating rod is also rotatably connected to the top of the L-shaped bottom, and a second gear is fixedly sleeved on the circumferential surface of the rotating rod. The second gear meshes with the first gear, and the second gear has more teeth than the first gear. An L-shaped rod is fixedly connected to the top of the rotating rod, and one end of the top of the L-shaped rod is slidably connected in the strip hole.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention employs a U-shaped frame, an electric telescopic rod, a lifting block, an arc-shaped plate, a slider, an L-shaped plate, and a counterweight. This allows the hinge to be fully supported by the counterweight after it is fixedly installed with the fixing block and mounting column, simulating the actual use of the hinge. Furthermore, the number of counterweights can be modified, effectively solving the problem of inaccurate data mentioned in the background technology. This results in a more realistic reproduction of the counterweight issue in the hinge's use scenario, making the experimental data more accurate and persuasive, and improving the accuracy of the experiment.

[0015] This invention utilizes a swing rod to drive a motor, a first gear, a second gear, and an L-shaped rod to ensure that the hinge, after being counterweighted, still needs to reciprocate, simulating the repeated opening and closing of a car door in reality, thereby further improving the accuracy of experimental data. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a durability testing device for a car door hinge proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the U-shaped frame structure of a durability testing device for a car door hinge proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the disassembled arc plate of the durability testing device for a car door hinge proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of one side of the workbench of a durability testing device for a car door hinge proposed in this utility model.

[0020] Figure 5 This utility model proposes a durability testing device for car door hinges. Figure 4 An enlarged structural diagram at point A;

[0021] Figure 6This is a schematic diagram of the structure at the bottom of the workbench of the durability testing device for a car door hinge proposed in this utility model.

[0022] In the diagram: 1. Workbench; 101. First arc-shaped hole; 2. U-shaped frame; 3. Slide rod; 4. Electric telescopic rod; 5. L-shaped block; 6. Guide rod; 7. Lifting block; 8. Arc-shaped plate; 801. Arc-shaped T-groove; 802. Second arc-shaped hole; 9. Slider; 901. Bottom rod; 10. L-shaped plate; 1001. Insert rod; 1002. Counterweight block; 11. Fixing block; 1101. First fixing hole; 12. Mounting column; 1201. Second fixing hole; 13. L-shaped bottom; 14. Drive motor; 15. First gear; 16. Rotating rod; 17. Second gear; 18. Swing rod; 19. Strip hole; 20. L-shaped rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Reference Figures 1-6 A durability testing device for car door hinges includes a workbench 1. A U-shaped frame 2 is fixedly connected to one side of the top of the workbench 1. Two sliding rods 3 are fixedly connected between the top and bottom of the inner side of the U-shaped frame 2. The same L-shaped block 5 is slidably connected to the circumferential surface of the two sliding rods 3. Both ends of the top of the L-shaped block 5 have round holes adapted to the sliding rods 3. An electric telescopic rod 4 is fixedly connected to the bottom of the inner side of the U-shaped frame 2, and the top of the electric telescopic rod 4 is fixedly connected to the top of the L-shaped block 5. The electric telescopic rod 4 ensures that the hinge is more stable during installation. For convenience, an opening is provided at the bottom of the L-shaped block 5 on the side away from the U-shaped frame 2. A lifting block 7 is slidably connected in the opening, and two guide rods 6 are fixedly connected between the top and bottom of the opening. Both guide rods 6 slide through the lifting block 7. Both ends of the lifting block 7 are provided with round holes that match the guide rods 6. An arc plate 8 is fixedly connected to the side of the lifting block 7 away from the U-shaped frame 2. An arc T-shaped sliding groove 801 is provided at the top of the arc plate 8, and a slider 9 is slidably connected in the arc T-shaped sliding groove 801. An L-shaped plate 10 is fixedly connected to the top of the slider 9.

[0026] In this embodiment, two insert rods 1001 are fixedly connected to the top of the L-shaped plate 10. Multiple counterweights 1002 are slidably sleeved on the circumferential surface of the two insert rods 1001. By setting the counterweights 1002, the self-weight of the car door can be simulated, thereby improving the accuracy of the experiment.

[0027] In this embodiment, a fixing block 11 is fixedly connected to one side of the L-shaped plate 10, and two first fixing holes 1101 are opened on the fixing block 11.

[0028] In this embodiment, a mounting post 12 is fixedly connected to the top of the workbench 1 near the fixing block 11, and two second fixing holes 1201 are opened on one side of the mounting post 12. The second fixing holes 1201 are adapted to the first fixing hole 1101. The hinge is installed on the car by installing with the fixing block 11 and the mounting post 12.

[0029] In this embodiment, a second arc-shaped hole 802 is provided at the bottom of the arc plate 8, and a first arc-shaped hole 101 is provided at the top of the workbench 1 near the second arc-shaped hole 802. A bottom rod 901 is fixedly connected to the bottom of the slider 9, and the bottom of the bottom rod 901 passes through the second arc-shaped hole 802 and the first arc-shaped hole 101. The setting of the first arc-shaped hole 101 ensures that the bottom rod 901 is not affected when it rotates.

[0030] In this embodiment, a swing rod 18 is rotatably connected to the bottom of the workbench 1 near the fixed block 11, and one end of the swing rod 18 is rotatably connected to the bottom rod 901, and the other end of the swing rod 18 is provided with a strip hole 19.

[0031] In this embodiment, an L-shaped bottom 13 is fixedly connected to the bottom of the workbench 1 near the strip hole 19, and a drive motor 14 is fixedly connected to the top of the L-shaped bottom 13. The output end of the drive motor 14 passes through the L-shaped bottom 13 and is fixedly connected to a first gear 15. A rotating rod 16 is also rotatably connected to the top of the L-shaped bottom 13. A second gear 17 is fixedly sleeved on the circumferential surface of the rotating rod 16 and meshes with the first gear 15. An L-shaped rod 20 is fixedly connected to the top of the rotating rod 16, and one end of the top of the L-shaped rod 20 is slidably connected in the strip hole 19. Through the circumferential rotation of the L-shaped rod 20 and the cooperation of the strip hole 19, the swing rod 18 swings back and forth.

[0032] Working principle: During use, the electric telescopic rod 4 extends, causing the L-shaped block 5, along with the arc-shaped plate 8, L-shaped plate 10, fixed block 11, and counterweight 1002, to rise. This allows the first fixing hole 1101 to engage with the second fixing hole 1201. At this point, the two ends of the hinge are installed through the second fixing hole 1201 and the first fixing hole 1101, respectively, onto the fixed block 11 and the mounting post 12. After installation, the electric telescopic rod 4 retracts, causing the L-shaped block 5 to descend. Simultaneously, due to the hinge's support, the slider 9, L-shaped plate 10, counterweight 1002, and lifting block 7 are all suspended in the air. The counterweight 1002 simulates the counterweight of a car door during normal use, making the experimental data more accurate. Indeed, start the drive motor 14, which drives the rotating rod 16 and L-shaped rod 20 to rotate via the drive motor 14 and the second gear 17. Since the top of the L-shaped rod 20 slides in the strip hole 19, the swing rod 18 swings back and forth. Through the rotational connection between the swing rod 18 and the bottom rod 901, the slider 9, the bottom rod 901, the L-shaped plate 10, and the counterweight 1002 rotate around the hinge to simulate the repeated opening and closing of the hinge in actual use. At the same time, according to actual needs, the number of counterweights 1002 can be changed in real time to ensure the accuracy of the experiment. With the existing vision sensor and controller, the observation of the hinge, the number of reciprocating movements of the L-shaped plate 10, and the recording of the number of counterweights 1002 can be used to obtain the implementation data.

[0033] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A durability testing apparatus for a car door hinge, comprising a workbench (1), characterized in that, A U-shaped frame (2) is fixedly connected to one side of the top of the workbench (1). Two sliding rods (3) are fixedly connected between the top and bottom of the inner side of the U-shaped frame (2). The same L-shaped block (5) is slidably connected to the circumferential surface of the two sliding rods (3). The top two ends of the L-shaped block (5) are provided with round holes that are adapted to the sliding rods (3). An electric telescopic rod (4) is fixedly connected to the bottom of the inner side of the U-shaped frame (2), and the top of the electric telescopic rod (4) is fixedly connected to the top of the L-shaped block (5). A slot is provided at the bottom of the side of the L-shaped block (5) away from the U-shaped frame (2). A lifting block (7) is slidably connected in the slot, and two guide rods (6) are fixedly connected between the top and bottom of the slot. Both guide rods (6) slide through the lifting block (7). Both ends of the lifting block (7) are provided with round holes that are compatible with the guide rods (6). An arc plate (8) is fixedly connected to the side of the lifting block (7) away from the U-shaped frame (2). An arc T-shaped groove (801) is provided at the top of the arc plate (8), and a slider (9) is slidably connected in the arc T-shaped groove (801). An L-shaped plate (10) is fixedly connected to the top of the slider (9).

2. The durability testing apparatus for a car door hinge according to claim 1, characterized in that, The top of the L-shaped plate (10) is fixedly connected to two insert rods (1001), and multiple counterweights (1002) are slidably sleeved on the circumferential surface of the two insert rods (1001).

3. The durability testing apparatus for a car door hinge according to claim 1, characterized in that, A fixing block (11) is fixedly connected to one side of the L-shaped plate (10), and two first fixing holes (1101) are opened on the fixing block (11).

4. The durability testing apparatus for a car door hinge according to claim 1, characterized in that, The workbench (1) has a mounting post (12) fixedly connected to the top near the fixing block (11), and two second fixing holes (1201) are opened on one side of the mounting post (12), and the second fixing holes (1201) are adapted to the first fixing hole (1101).

5. The durability testing apparatus for a car door hinge according to claim 1, characterized in that, The bottom of the arc plate (8) is provided with a second arc hole (802), the top of the workbench (1) is provided with a first arc hole (101) near the second arc hole (802), and the bottom of the slider (9) is fixedly connected with a bottom rod (901), and the bottom of the bottom rod (901) passes through the second arc hole (802) and the first arc hole (101).

6. The durability testing apparatus for a car door hinge according to claim 1, characterized in that, The workbench (1) has a swing rod (18) rotatably connected to the bottom near the fixed block (11), and one end of the swing rod (18) is rotatably connected to the bottom rod (901). The other end of the swing rod (18) has a strip hole (19).

7. The durability testing apparatus for a car door hinge according to claim 1, characterized in that, The workbench (1) has an L-shaped bottom (13) fixedly connected to the bottom near the strip hole (19), and a drive motor (14) is fixedly connected to the top of the L-shaped bottom (13). The output end of the drive motor (14) passes through the L-shaped bottom (13) and is fixedly connected to a first gear (15). The top of the L-shaped bottom (13) is also rotatably connected to a rotating rod (16), and a second gear (17) is fixedly sleeved on the circumferential surface of the rotating rod (16). The second gear (17) meshes with the first gear (15). The top of the rotating rod (16) is fixedly connected to an L-shaped rod (20), and one end of the top of the L-shaped rod (20) is slidably connected in the strip hole (19).

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