Door hinge fatigue testing device

Abstract

The utility model relates to a door hinge fatigue testing device which comprises a support and a pushing piece, a door unit is fixedly connected with the support through a fixing piece, the pushing piece comprises an air cylinder, a transmission rod and an L-shaped push rod rotationally connected to the output end of the air cylinder, the air cylinder is fixedly connected with the support, and an automatic door closer is arranged on the side, close to a door frame of the door unit, of the top of the door unit. An air cylinder drives an L-shaped push rod to automatically push a door plate of a door unit, door opening operation is simulated, after a door is opened, an automatic door closer automatically closes the door plate, the air cylinder and the automatic door closer open and close the door plate in sequence, repeated operation is conducted multiple times, the frequent opening and closing condition of the door hinge in actual use is simulated, and therefore the fatigue test of the door hinge is achieved. According to the test process, the door plate does not need to be manually and repeatedly opened and closed to simulate the actual use condition, the efficiency is effectively improved, the test result is prevented from being influenced by human factors, and the test accuracy and reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of door hinge fatigue testing technology, and specifically to a door hinge fatigue testing device. Background Technology

[0002] Door hinges, also known as hinges, are key components that connect doors to door frames or other objects, and are widely used in many fields such as construction, furniture, automobiles, and electronic equipment.

[0003] In the manufacturing process of door hinges, fatigue testing is necessary to ensure product quality. By simulating the frequent opening and closing of door hinges in actual use, the system tests whether they can maintain good performance within a specified number of cycles, such as whether loosening, wear, or breakage occurs. This allows for the selection of qualified products and prevents substandard products from entering the market.

[0004] Traditional door hinge fatigue testing often relies on manual operation, simulating real-world usage by repeatedly opening and closing the door. This method is not only inefficient, but the test results are also greatly affected by human factors, such as inconsistent operating force and speed, making it difficult to guarantee the accuracy and reliability of the test. Utility Model Content

[0005] The purpose of this invention is to design a door hinge fatigue testing device to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a door hinge fatigue testing device, comprising a bracket and a pusher, wherein a door unit is fixedly connected to the bracket via a fixing member, the pusher comprising a cylinder, a transmission rod, and an L-shaped push rod rotatably connected to the output end of the cylinder, the cylinder being fixedly connected to the bracket, one end of the transmission rod being fixedly connected to the bracket, and the other end of the transmission rod being connected to the end of the L-shaped push rod near the cylinder, wherein an automatic door closer is provided on the top of the door unit near the door frame of the door unit.

[0007] Furthermore, the L-shaped push rod is rotatably connected to a first pulley for pushing the door panel of the door unit at one end near the door unit.

[0008] Furthermore, the fixing component includes a handwheel, a U-shaped connecting rod, clamps and baffles respectively disposed on the front and back sides of the door unit, the baffles being fixedly connected to the bracket, one end of the U-shaped connecting rod being fixedly connected to the clamps, the bracket having a through hole corresponding to the U-shaped connecting rod, and the other end of the U-shaped connecting rod passing through the through hole and threadedly connected to the handwheel.

[0009] Furthermore, it also includes a counter for counting the number of times the door panel is opened and closed, the counter being fixed to the long rod of the bracket.

[0010] Furthermore, a column is slidably connected to the inner side of the bracket, and the two ends of the column are fixed to the bracket by pins.

[0011] Furthermore, a second pulley is rotatably connected to the bottom of the column, and a groove that matches the second pulley is provided on the side of the bracket near the bottom of the door unit.

[0012] Furthermore, the bracket is fixedly connected to a reinforcing column.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a cylinder to drive an L-shaped push rod to automatically push the door panel of the door unit, simulating the operation of opening a door. After the door is opened, the automatic door closer automatically closes the door panel. The cylinder and the automatic door closer open and close the door panel in sequence and repeat the operation multiple times to simulate the frequent opening and closing of the door hinge in actual use, thereby realizing the fatigue test of the door hinge. The above test process does not require manual repeated opening and closing of the door panel to simulate actual use, which effectively improves efficiency, avoids the influence of human factors on the test results, and improves the accuracy and reliability of the test. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model from another angle;

[0017] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0018] The names of the components shown in the diagram are as follows: 1. Bracket; 2. Pushing component; 21. Cylinder; 22. Transmission rod; 23. L-shaped push rod; 24. Rotating shaft; 3. Door unit; 31. Door panel; 32. Door frame; 4. Fixing component; 41. Handwheel; 42. U-shaped connecting rod; 43. Clamping block; 44. Baffle; 45. Threaded sleeve; 5. Automatic door closer; 6. First pulley; 7. Counter; 8. Long rod; 9. Column; 10. Pin; 11. Slide groove; 12. Reinforcing column. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] Example: Please refer to Figure 1-4 A door hinge fatigue testing device includes a support 1 and a pusher 2. The support 1 is fixedly connected to a reinforcing column 12 to enhance its strength. The door unit 3 is fixedly connected to the support 1 via a fixing member 4. The pusher 2 includes a cylinder 21, a transmission rod 22, and an L-shaped push rod 23 rotatably connected to the output end of the cylinder 21. The cylinder 21 is fixedly connected to the support 1. One end of the transmission rod 22 is fixedly connected to the support 1, and the other end of the transmission rod 22 is connected to the end of the L-shaped push rod 23 near the cylinder 21. An automatic door closer 5 is provided on the top of the door unit 3 near the side of the door frame 32 of the door unit 3. After cylinder 21 is activated, its telescopic shaft extends outward and pushes the end of the L-shaped push rod 23, causing the L-shaped push rod 23 to rotate around the rotating shaft 24 on the transmission rod 22. This causes the other end of the L-shaped push rod 23 to approach the door panel 31 and push the door panel 31, thereby opening the door and simulating the opening operation. After the door panel 31 is opened, the telescopic shaft of cylinder 21 retracts, and the automatic door closer 5 automatically closes the door panel 31. Then, the opening operation is simulated again, and the automatic door closer 5 closes the door panel 31 again. This process is repeated multiple times to simulate the frequent opening and closing of the door hinge in actual use, thereby achieving fatigue testing of the door hinge. The above testing process does not require manual repeated opening and closing of the door panel 31 to simulate actual use, effectively improving efficiency, avoiding the influence of human factors on the test results, and improving the accuracy and reliability of the test.

[0021] The L-shaped push rod 23 is rotatably connected to a first pulley 6 at one end near the door unit 3 for pushing the door panel 31 of the door unit 3. By setting the first pulley 6, the friction of the door panel 31 is reduced so as to prevent the door panel 31 from being worn.

[0022] The fixing component 4 includes a handwheel 41, a U-shaped connecting rod 42, clamping blocks 43 and baffles 44 respectively disposed on the front and back sides of the door unit 3. The baffle 44 is fixedly connected to the bracket 1. One end of the U-shaped connecting rod 42 is fixedly connected to the clamping block 43. The bracket 1 has a through hole corresponding to the U-shaped connecting rod 42, and the through hole is interference-fitted with the U-shaped connecting rod 42. The other end of the U-shaped connecting rod 42 passes through the through hole and is threadedly connected to the handwheel 41. One hand presses the clamping block 43 so that the clamping block 43 is tightly attached to the door frame 32. At this time, the back side of the door frame 32 is tightly attached to the baffle 44, and the door frame 32 plays a positioning role. The other hand rotates the handwheel 41 so that the handwheel 41 moves inward. Continue to rotate the handwheel 41 until the threaded sleeve 45 on the handwheel 41 is tightly attached to the bracket 1. At this time, the threaded sleeve 45 and the clamping block 43 clamp the door frame 32, thereby fixing the door unit 3, which is beneficial for subsequent door hinge fatigue testing.

[0023] The door hinge fatigue testing device also includes a counter 7 for calculating the number of times the door panel 31 is opened and closed. The counter 7 is fixed to the long rod 8 of the bracket 1. The handle on the door panel 31 is in contact with the counter 7, which facilitates the counter 7 to count.

[0024] A column 9 is slidably connected to the inner side of the bracket 1. Both ends of the column 9 are locked to the bracket 1 by pins 10. The door unit 3 is placed between the column 9 and the bracket 1. A fixing element 4 is also provided on the column 9 to ensure the stability of the door unit 3. By pushing the column 9, the width between the column 9 and the bracket 1 is adjusted to match the width of the door unit 3. Therefore, by setting the column 9, hinge fatigue tests can be performed on door units 3 of different widths in the same equipment, improving the reliability of the device. A second pulley is rotatably connected to the bottom of the column 9. A groove 11, which matches the second pulley, is provided on the side of the bracket 1 near the bottom of the door unit 3. The width of the groove 11 is less than the thickness of the door frame 32 to prevent the door frame 32 from sinking into the groove 11. The second pulley allows for easy adjustment of the column 9.

[0025] The working method of this utility model is as follows: When conducting hinge fatigue testing on door unit 3, the column 9 is first adjusted so that the width between the column 9 and the bracket 1 matches the width of door unit 3. Door unit 3 is then placed between the column 9 and the bracket 1. By rotating the handwheel 41, the threaded sleeve 45 on the handwheel 41 clamps the door frame 32 with the clamping block 43, thereby fixing door unit 3. Subsequently, the cylinder 21 is activated, which drives the L-shaped push rod 23 to automatically push the door panel 31, simulating the opening and closing operation. After the door opens, the automatic door closer 5 automatically closes the door panel 31. The cylinder 21 and the automatic door closer 5 open and close the door panel 31 sequentially and repeatedly, simulating the frequent opening and closing of the door hinge in actual use, thereby achieving the door hinge fatigue test. The above testing process does not require manual repeated opening and closing of the door panel 31 to simulate actual use, effectively improving efficiency, avoiding the influence of human factors on the test results, and improving the accuracy and reliability of the test.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A door hinge fatigue testing apparatus, characterized by: The door unit (3) is fixedly connected with the support (1) through a fixing member (4), and the pushing member (2) comprises a cylinder (21), a transmission rod (22) and an L-shaped pushing rod (23) rotatably connected to an output end of the cylinder (21), the cylinder (21) is fixedly connected with the support (1), one end of the transmission rod (22) is fixedly connected with the support (1), and the other end of the transmission rod (22) is connected with one end of the L-shaped pushing rod (23) close to the cylinder (21), and the top of the door unit (3) is provided with an automatic door closer (5) close to one side of a door frame (32) of the door unit (3).

2. The door hinge fatigue testing apparatus of claim 1, wherein: The L-shaped pushing rod (23) is rotatably connected with a first pulley (6) for pushing a door plate (31) of the door unit (3) at one end close to the door unit (3).

3. The door hinge fatigue testing apparatus of claim 1, wherein: The fixing member (4) comprises a hand wheel (41), a U-shaped connecting rod (42), clamping blocks (43) and baffles (44) arranged on the front and back surfaces of the door unit (3) respectively, the baffle (44) is fixedly connected with the support (1), one end of the U-shaped connecting rod (42) is fixedly connected with the clamping block (43), the support (1) is provided with a through hole corresponding to the U-shaped connecting rod (42), and the other end of the U-shaped connecting rod (42) penetrates through the through hole and is threadedly connected with the hand wheel (41).

4. The door hinge fatigue testing apparatus according to any one of claims 1 to 3, characterized in that: A counter (7) for counting the opening and closing times of the door plate (31) is further included, and the counter (7) is fixedly connected with a long rod (8) of the support (1).

5. The door hinge fatigue testing apparatus of claim 1, wherein: The inner side of the support (1) is slidably connected with a stand column (9), and the two ends of the stand column (9) are fixed with the support (1) through a bolt (10).

6. The door hinge fatigue testing apparatus of claim 5, wherein: The bottom of the stand column (9) is rotatably connected with a second pulley, and the side close to the bottom end of the support (1) and the door unit (3) is provided with a sliding groove (11) matched with the second pulley.

7. The door hinge fatigue testing apparatus of claim 1, wherein: The support (1) is fixedly connected with a reinforcing column (12).

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