A hinge life testing device and apparatus

Abstract

The utility model relates to a hinge life testing device and equipment. The hinge life testing device, include: motor, swing arm, its first end with the output shaft fixed connection of motor, clamp, its set up in the second end of swing arm, is used for clamping the lid or handle of the hinge of waiting for testing, controller, through the output shaft rotation of control motor, control swing arm swing around its first end, drive clamp clamping lid or handle moves up and down, to control lid open or close, its through the statistics lid repeated opening and closing times of waiting for testing hinge before damage, obtains the life data of waiting for testing hinge. The utility model adopts swing arm and clamp to replace the rope in the prior art test method, effectively avoids the risk of rope jam in the prior art test method, improves the stability of the test process, realizes the full automation control of the test process, and saves a large amount of manpower cost.

Description

Technical Field

[0001] This utility model relates to the field of hinges, and in particular to a hinge life testing device and equipment. Background Technology

[0002] A food warmer is a device used in the catering industry to heat, keep warm, or display food. It is commonly found in buffet restaurants, hotel banquets, canteens, and other similar settings. Its main function is to maintain the temperature of food and enhance the dining experience.

[0003] Please see Figure 1 , Figure 1 This is a schematic diagram of an existing food stove. An existing food stove includes a main body 010 and a lid 020. The main body 010 is a container for holding food. The lid 020 covers the top of the main body 010, with its first end hinged to the main body 010 via a hinge 021, and its second end having a handle 022. Users can open or close the lid 020 by pulling the handle 022, thus changing the opening and closing state of the hinge 021. After repeated opening and closing, the hinge 021's lifespan decreases due to mechanical wear or component aging. Before mass-producing food stoves, manufacturers must test the lifespan of the hinge 021 to determine the maximum number of opening and closing cycles it can withstand.

[0004] An existing hinge life testing method includes the following steps: S00, tying the first end of a rope to the handle 022 of a cover 020, and winding the second end of the rope around a roller. S01, controlling the rotation of the roller via a motor, thereby controlling the length of the free section of the rope not yet wound around the roller, to control the opening or closing of the cover 020. Specifically, when the motor rotates forward, the free section of the rope shortens, the rope tightens, and the second end of the cover 020 is lifted, simulating the user pulling the handle 022 to open the cover 020; when the motor rotates in reverse, the free section of the rope lengthens, the rope loosens, and the second end of the cover 020 falls back under gravity, simulating the user releasing the handle 022 to close the cover 020. S02, repeatedly opening and closing the cover 020 until the hinge 021 is damaged, at which point the test stops. S03, record the number of times the cover 020 was repeatedly opened and closed before the hinge 021 was damaged in this round of testing, and use this number as the life data of the hinge 021.

[0005] However, the existing hinge life testing methods have the following drawbacks: the rope is prone to knotting or getting stuck on the roller, requiring frequent manual intervention; the automatic testing has poor stability and wastes manpower. Utility Model Content

[0006] Based on this, the purpose of this utility model is to overcome the defects or deficiencies of the prior art and provide a hinge life testing device and equipment.

[0007] A hinge life testing device includes: a motor; a swing arm, the first end of which is fixedly connected to the output shaft of the motor; a clamp disposed at the second end of the swing arm for clamping a cover or handle of the hinge to be tested; and a controller that controls the output shaft of the motor to rotate, thereby controlling the swing arm to swing around its first end, driving the clamp to move up and down while holding the cover or handle, thus controlling the cover to open or close; the device obtains the life data of the hinge to be tested by counting the number of times the cover was repeatedly opened and closed before the hinge to be tested was damaged.

[0008] Further, the clamp includes: a swing arm connecting piece disposed at the second end of the swing arm; a fixed clamp piece disposed on the swing arm connecting piece; and a telescopic clamp piece disposed on the swing arm connecting piece via a position control unit; the position control unit is signal-connected to the controller; the controller controls the telescopic clamp piece to extend or retract via the position control unit; when the telescopic clamp piece extends and the cover of the hinge to be tested is closed, the fixed clamp piece is located at the bottom of the cover or handle of the hinge to be tested, and the telescopic clamp piece is located at the top of the cover or handle of the hinge to be tested; when the telescopic clamp piece retracts and the cover of the hinge to be tested is closed, the projection of the telescopic clamp piece on the horizontal plane does not contact the projection of the cover or handle on the horizontal plane.

[0009] Furthermore, the position control unit is specifically a push-pull electromagnet; the push-pull electromagnet is mounted on the swing arm connecting piece; the telescopic clamp is mounted at the end of the telescopic sliding rod of the push-pull electromagnet; the controller controls the extension or retraction of the telescopic clamp by controlling the push-pull electromagnet to de-energize or energize it.

[0010] Furthermore, the swing arm connecting piece is provided with a first waist-shaped hole, and the swing arm connecting piece is fixed to the second end of the swing arm by inserting a screw or bolt into the first waist-shaped hole.

[0011] Furthermore, the swing arm connecting piece is provided with a fixing clip mounting part perpendicular to the main body, and the fixing clip is provided with a connecting part perpendicular to the main body; the fixing clip mounting part and / or the connecting part are provided with a third oblong hole, and the fixing clip is fixed on the swing arm connecting piece by inserting a bolt into the third oblong hole.

[0012] Furthermore, the clamp also includes: a telescopic clamp limiting piece, which is disposed on the top of the push-pull electromagnet and extends toward the telescopic clamp, wherein a limiting groove is provided in the middle of the piece extending in a straight line parallel to the telescopic clamp's telescopic direction; and a telescopic clamp limiting rod, which is disposed on the top of the telescopic clamp and whose end is inserted into the limiting groove of the telescopic clamp limiting piece.

[0013] Furthermore, it also includes a reset sensor connected to the controller signal; when the cover of the hinge under test is closed to the correct position, the cover triggers the reset sensor, causing the controller to receive a reset signal; the controller counts the number of times the reset signal is received, and uses this as the number of times the cover is repeatedly opened and closed; the controller records the waiting time for each reset signal, and when the waiting time exceeds a preset waiting time threshold or is less than a preset minimum falling time, it determines that the hinge is damaged, then stops the current test, and uses the number of times the cover is repeatedly opened and closed in the current test as the hinge's lifespan data.

[0014] Furthermore, it also includes a lower limit switch and an upper limit switch that are connected to the controller signal;

[0015] When the swing arm swings to the lowest point of the preset stroke, the swing arm triggers the lower limit switch, causing the controller to receive a lower limit signal; when the swing arm swings to the highest point of the preset stroke, the swing arm triggers the upper limit switch, causing the controller to receive an upper limit signal; after receiving the upper limit signal, the controller prohibits the swing arm from swinging upward.

[0016] Based on the same concept, this utility model also provides a hinge life testing device, which includes: a cabinet, any one of the aforementioned hinge life testing devices, and a human-machine interaction device; the hinge life testing device is disposed inside the cabinet and tests the life of the hinge to be tested to obtain the life data of the hinge to be tested; the human-machine interaction device is signal-connected to the hinge life testing device, and displays the life data of the hinge to be tested, as well as controls the operating parameters of the hinge life testing device.

[0017] Furthermore, the number of cabinet and hinge life testing devices is 2; the two cabinets are stacked; the two hinge life testing devices test the life of the two hinges to be tested respectively.

[0018] This invention replaces the rope in existing testing methods with a swing arm and clamps, effectively avoiding the risk of rope jamming. While improving the stability of the testing process, it also achieves fully automated control of the testing process, saving significant labor costs. Regarding the clamp structure design, this invention features a telescopic clamp. By controlling the extension and retraction of the clamp, the testing mode can be switched between a normal falling mode and a force-pressing mode, thereby testing the hinge's lifespan data under different working conditions, significantly improving the completeness of the testing dimensions and the comprehensiveness of data acquisition. Simultaneously, by controlling the extension and retraction of the clamp using an electromagnet, the failure of the damping hinge can be detected in the force-pressing mode, improving the accuracy of the hinge lifespan data.

[0019] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the existing stove structure;

[0021] Figure 2 This is a schematic diagram of the hinge life testing device of this utility model;

[0022] Figure 3 This is a schematic diagram of the hinge life testing device of this utility model;

[0023] Figure 4 This is a schematic diagram of the fixture of the hinge life testing device of this utility model.

[0024] Reference numerals: main body of the stove 010, lid 020, hinge 021, handle 022, cabinet 10, side panel 11, top panel 12, bottom panel 13, cabinet door 14, caster 15, hinge life testing device 20, motor 21, swing arm 22, clamp 23, swing arm connecting piece 231, first waist-shaped hole 231a, second waist-shaped hole 231b, fixed clamp mounting part 231c, fixed clamp 232, connecting part 232a, push-pull electromagnet 233, telescopic clamp 234, telescopic clamp limiting piece 235, limiting groove 235a, telescopic clamp limiting rod 236, controller 24, human-machine interaction device 30. Detailed Implementation

[0025] This invention addresses the shortcomings of existing hinge life testing methods where ropes easily get tangled or stuck on the rollers. Unlike existing methods that use ropes to bind the lid handle, this invention incorporates a clamp at the end of the swing arm to hold the lid or handle. A motor drives the swing arm to simulate opening and closing the lid. This effectively avoids the risk of rope jamming found in existing methods, improving testing stability and achieving fully automated control of the testing process, thus saving on manual intervention costs.

[0026] Furthermore, existing hinge life testing methods can only simulate the action of a user releasing the handle and the lid automatically closing under gravity, but cannot simulate the action of a user manually pulling the handle to close the lid, resulting in incomplete testing. Based on this, this invention features a telescopic clamp in its fixture structure design. By controlling the telescopic clamp's extension and retraction, two different testing modes can be switched: (1) in the normal falling mode, this invention simulates the situation where the user naturally releases the handle and the lid falls naturally; (2) in the force-pressing mode, this invention simulates the situation where the user manually presses the handle and the lid falls under force. These two different testing modes can test the hinge's life data under different working conditions, significantly improving the completeness of the testing dimensions and the comprehensiveness of data collection.

[0027] It should be clarified that although the hinge to be tested in the actual research and development activities is a damping hinge, and its cover will fall slowly instead of immediately when no force is applied; however, since the hinge life testing device and equipment of this utility model can also work when the hinge to be tested is not a damping hinge, this utility model does not limit the hinge to be tested to be a damping hinge, and the following text will not specifically mention that the hinge to be tested is a damping hinge.

[0028] The present invention will now be described in detail with reference to the accompanying drawings.

[0029] Please see Figure 2 , Figure 2 This is a structural schematic diagram of the hinge life testing device of this utility model. The hinge life testing device of this utility model includes: a cabinet 10, a hinge life testing device 20, and a human-machine interface device 30. The hinge life testing device 20, which is the hinge life testing device of this utility model, is disposed inside the cabinet 10 and is used to test the life of the hinge to be tested to obtain life data of the hinge. The human-machine interface device 30 is signal-connected to the hinge life testing device 20 and is used to display the life data of the hinge to be tested obtained by the hinge life testing device 20, and to control the operating parameters of the hinge life testing device 20.

[0030] Specifically, the cabinet 10 includes: side panels 11, a top panel 12, a bottom panel 13, and a cabinet door 14. There are three side panels 11. The three side panels 11, the top panel 12, and the bottom panel 13 together form a rectangular box-shaped structure with open sides. The cabinet door 14 covers the open sides of the rectangular box-shaped structure, thus forming a closed rectangular cabinet. The hinge life testing device 20 is located inside this rectangular cabinet. The cabinet 10 protects, insulates from sound, and prevents mechanical injury to the hinge life testing device 20 located within it.

[0031] Furthermore, the side panels 11, top panel 12, and cabinet doors 14 of the cabinet 10 are all made of transparent acrylic sheets, allowing users to easily observe the hinge life testing device 20 inside the cabinet 10 through the transparent acrylic sheets. The bottom plate 13 of the cabinet 10 is made of bakelite board, which has good strength and wear resistance, making it suitable as a base for installing the hinge life testing device 20.

[0032] Furthermore, there are two cabinets 10 and two hinge life testing devices 20. The two cabinets 10 are stacked, and each cabinet contains one hinge life testing device 20. The two hinge life testing devices 20 can test the lifespan of two hinges in parallel, improving testing efficiency. The stacked arrangement of the two cabinets 10 saves floor space for the hinge life testing equipment, making it suitable for scenarios with limited testing space.

[0033] Furthermore, casters 15 are provided at the bottom of the cabinet 10 located at the bottom layer to facilitate the user's movement of the hinge life testing equipment.

[0034] Furthermore, the human-computer interaction device 30 is a touch screen, which is located on the outside of the cabinet 10 to facilitate users in querying data and controlling operating parameters.

[0035] Please see Figure 2 and Figure 3 , Figure 3This is a schematic diagram of the hinge life testing device of this utility model. Specifically, the hinge life testing device 20 includes: a motor 21, a swing arm 22, a clamp 23, and a controller 24. The motor 21 is mounted on the base plate 13 of the cabinet 10. The first end of the swing arm 22 is fixedly connected to the output shaft of the motor 21. The clamp 23 is mounted on the second end of the swing arm 22. During testing, the hinge to be tested is fixed on the base plate 13, and the clamp 23 holds the cover or handle of the hinge to be tested. The controller 24 controls the swing arm 22 to swing around its first end by controlling the rotation of the output shaft of the motor 21. The swing arm 22 swings, causing the clamp 23 to move up and down while holding the cover or handle, thereby controlling the opening or closing of the cover. Specifically, when the motor 21 rotates forward, the swing arm 22 swings upward, causing the clamp 23 to move upward while holding the cover or handle, thereby simulating the action of a user pulling the handle to open the cover. When the motor 21 reverses, the swing arm 22 swings downward, causing the second end of the lid to fall back under the action of gravity or clamp 23, thereby simulating the action of the user releasing the handle to close the lid, or manually pulling the handle to close the lid.

[0036] It should be noted that, since not all covers of the hinges under test have handles, when the cover does not have a handle, the clamp 23 can open the cover by clamping the second end of the cover furthest from the hinge. That is, the clamp 23 clamps the cover or handle of the hinge under test in the following ways: when the cover of the hinge under test has a handle, the clamp 23 can clamp both the handle and the second end of the cover furthest from the hinge; when the cover of the hinge under test does not have a handle, the clamp 23 directly clamps the second end of the cover furthest from the hinge.

[0037] Furthermore, the hinge life testing device 20 also includes a lower limit switch and an upper limit switch. When the swing arm 22 swings to the lowest point of the preset stroke, the swing arm 22 triggers the lower limit switch, causing the controller 24 to receive a lower limit signal. During manual testing, after receiving the lower limit signal, the controller 24 controls the swing arm 22 to swing at a preset minimum speed, thereby preventing the swing arm 22 from impacting the base plate 13 at high speed and causing an accident. During automatic testing, the controller 24 detects whether the swing arm 22 has reached the lowest point of the preset stroke based on the lower limit signal. When the swing arm 22 swings to the highest point of the preset stroke, the swing arm 22 triggers the upper limit switch, causing the controller 24 to receive an upper limit signal. After receiving the upper limit signal, the controller 24 prohibits the swing arm 22 from continuing to swing upward, preventing the hinge from being over-opened and causing accidental damage to the hinge.

[0038] Furthermore, the hinge life testing device 20 also includes a reset sensor. The reset sensor is disposed on the base plate 13. When the cover of the hinge under test is closed to the correct position, the cover triggers the reset sensor, causing the controller 24 to receive a reset signal. The controller 24 counts the number of times the reset signal is received, using this count as the number of times the cover is repeatedly opened and closed. When the hinge under test is damaged, the cover cannot be closed to the correct position, causing the controller 24 to not receive a reset signal for an extended period. In this case, the controller 24 can determine that the hinge is damaged. Therefore, the controller 24 also records the waiting time for each reset signal. When the waiting time exceeds a preset waiting time threshold, the controller 24 determines that the hinge is damaged, stops the current test, and uses the number of times the cover is repeatedly opened and closed in this test as the hinge's life data.

[0039] Please see Figure 4 , Figure 4 This is a schematic diagram of the fixture structure of the hinge life testing device of this utility model. Specifically, the fixture 23 includes: a swing arm connecting piece 231, a fixed clamping piece 232, a push-pull electromagnet 233, and a telescopic clamping piece 234. The swing arm connecting piece 231 is installed at the second end of the swing arm 22. The fixed clamping piece 232 and the push-pull electromagnet 233 are both installed on the swing arm connecting piece 231. The telescopic clamping piece 234 is installed at the end of the telescopic sliding rod of the push-pull electromagnet 233. When the push-pull electromagnet 233 is de-energized, its telescopic sliding rod naturally extends, causing the telescopic clamping piece 234 to extend towards the hinge to be tested. When the push-pull electromagnet 233 is energized, its telescopic sliding rod shortens, causing the telescopic clamping piece 234 to retract away from the hinge to be tested.

[0040] When the push-pull electromagnet 233 is de-energized and the cover of the hinge under test is closed, the fixing clip 232 is located at the bottom of the cover or handle of the hinge under test, and the telescopic clip 234 is located at the top of the cover or handle of the hinge under test, with the cover or handle clamped between the fixing clip 232 and the telescopic clip 234. When the push-pull electromagnet 233 is energized and the cover of the hinge under test is closed, the fixing clip 232 remains at the bottom of the cover or handle of the hinge under test, but because the telescopic clip 234 retracts, the projection of the telescopic clip 234 on the horizontal plane does not contact the projection of the cover or handle on the horizontal plane, and the telescopic clip 234 will not contact the cover or handle.

[0041] The controller 24 controls whether the push-pull electromagnet 233 is energized, thereby controlling the hinge life testing device 20 to switch test modes. The hinge life testing device 20 of this invention has the following two test modes:

[0042] (1) Forceful Press-Down Mode: In forceful press-down mode, the controller 24 de-energizes the push-pull electromagnet 233, and the telescopic clamp 234 extends. The clamp 23 holds the cover or handle of the hinge under test, specifically: the fixed clamp 232 of the clamp 23 supports the bottom of the cover or handle, and the telescopic clamp 234 of the clamp 23 blocks the top of the cover or handle. The process of the controller 24 controlling the cover to open is specifically as follows: the controller 24 controls the motor 21 to rotate forward, the swing arm 22 swings upward, and drives the fixed clamp 232 to swing upward as well. At this time, the fixed clamp 232 generates an upward lifting force on the cover or handle of the hinge under test, so that the second end of the cover is lifted, thereby simulating the action of the user pulling the handle to open the cover. The process of the controller 24 controlling the cover to close is specifically as follows: the controller 24 controls the motor 21 to rotate in reverse, the swing arm 22 swings downward, and drives the telescopic clamp 234 to swing downward as well. At this time, the telescopic clip 234 exerts downward pressure on the cover or handle of the hinge to be tested, causing the second end of the cover to be pressed down, thereby simulating the action of the user manually pulling the handle to close the cover.

[0043] (2) Natural Fall Mode: In natural fall mode, the controller 24 energizes the push-pull electromagnet 233, causing the telescopic clamp 234 to retract. The clamp 23 holds the cover or handle of the hinge under test, specifically: the fixed clamp 232 of the clamp 23 supports the bottom of the cover or handle, while the telescopic clamp 234 does not obstruct the top of the cover or handle. The controller 24 controls the cover to open as follows: the controller 24 controls the motor 21 to rotate forward, the swing arm 22 swings upward, causing the fixed clamp 232 to swing upward as well. At this time, the fixed clamp 232 generates an upward lifting force on the cover or handle of the hinge under test, causing the second end of the cover to be lifted, thereby simulating the action of a user pulling the handle to open the cover. The controller 24 controls the cover to close as follows: the controller 24 controls the motor 21 to rotate in reverse, the swing arm 22 swings downward, causing the telescopic clamp 234 to swing downward as well. At this time, the telescopic clip 234 cannot contact the handle due to its retraction. Even if the telescopic clip 234 swings downward, it will not exert downward pressure on the cover or handle of the hinge under test. Therefore, the second end of the cover will slowly fall under the action of gravity, thereby simulating the user's action of releasing the handle to close the cover.

[0044] Furthermore, when the hinge under test is damaged, the lid may fall too quickly. However, the lid can still trigger the reset sensor, preventing the controller 24 from detecting the damage in time. Therefore, in one embodiment, the natural fall mode further includes: the controller 24 records the waiting time for each reset signal. When the waiting time is less than a preset minimum fall time or exceeds a preset waiting time threshold, the controller 24 determines that the hinge is damaged, stops the current test, and uses the number of times the lid is repeatedly opened and closed in this test as the hinge's lifespan data. In this embodiment, the minimum fall time is 10 seconds, and the waiting time threshold is 50 seconds.

[0045] Furthermore, in the force-pressing mode, when the hinge under test is damaged, in addition to the cover falling too fast, the cover of the hinge under test will also be forcibly pressed down by the telescopic clip 234. Therefore, it is possible that although the hinge under test is damaged, the cover can still trigger the reset sensor, causing the controller 24 to fail to detect that the hinge under test is damaged in time. Therefore, in one embodiment, the force-pressing mode further includes: the controller 24 acquiring the user-set failure detection interval number n through the human-machine interaction device 30; after every n repeated opening and closing of the lid, a damage determination action is performed: the push-pull electromagnet 233 is energized and the telescopic clip 234 is retracted to simulate the user releasing the handle to close the lid in a natural fall mode, while the controller 24 records the waiting time for the reset signal detected in this natural fall mode; then, the reset sensor determines whether the hinge under test is damaged; if the waiting time is less than the preset minimum fall time or exceeds the preset waiting time threshold, the hinge under test is damaged, and the current test is stopped; if the hinge under test is not damaged, the push-pull electromagnet 233 is de-energized and the telescopic clip 234 is extended, thereby resuming the test action in the force-pressing mode. In this embodiment, the failure detection interval number n is 200 times, the minimum fall time is 10 seconds, and the waiting time threshold is 50 seconds.

[0046] When the telescopic clamp 234 moves away from the hinge under test to a position where it can no longer contact the lid or handle, the test mode switches to the natural fall mode; when the telescopic clamp 234 moves towards the hinge under test to a position where it can contact the lid or handle, the test mode switches to the force-pressing mode. Since the push-pull electromagnet 233 in this embodiment is used to control the position of the telescopic clamp 234, in other embodiments, the push-pull electromagnet 233 can also be replaced by any position control unit capable of controlling the position of the telescopic clamp 234, such as a cylinder, hydraulic cylinder, lead screw control unit, worm gear control unit, or gear control unit.

[0047] Furthermore, the inventors discovered in actual testing that if the hinge life testing device 20 is in a natural fall mode for an extended period, the push-pull electromagnet 233 will remain energized for a long time, and the push-pull electromagnet 233 has a high probability of being damaged. Therefore, in an embodiment where the hinge life testing device 20 is in a natural fall mode, the clamp 23 of the hinge life testing device 20 also includes a limiting block. The limiting block is located at the other end of the movable slide rod of the push-pull electromagnet 233, away from the telescopic clamp 234, to restrict the movable slide rod of the push-pull electromagnet 233 from moving towards the hinge to be tested, so that the telescopic clamp 234 can remain in a retracted state even when the push-pull electromagnet 233 is not energized, thereby allowing the hinge life testing device 20 to remain in a natural fall mode for an extended period even when the push-pull electromagnet 233 is not energized. Preferably, the limiting block is a limiting clamp; when the user clamps the limiting clamp on the other end of the sliding rod of the push-pull electromagnet 233 away from the telescopic clamp 234, the hinge life testing device 20 is in the natural falling mode; when the user removes the limiting clamp, the hinge life testing device 20 is in the force-pressing mode.

[0048] Furthermore, the swing arm connecting piece 231 is also provided with a first oblong hole 231a. By inserting a screw or bolt into the first oblong hole 231a, the swing arm connecting piece 231 is fixed to the second end of the swing arm 22. By adjusting the position of the screw or bolt inserted into the first oblong hole 231a, the distance between the swing arm connecting piece 231 and the hinge to be tested can be adjusted to accommodate caps or handles of different sizes. In this embodiment, there are two first oblong holes 231a, and the two first oblong holes 231a are respectively arranged parallel to each other on the left and right sides of the swing arm connecting piece 231.

[0049] Furthermore, the swing arm connecting piece 231 is also provided with a second oblong hole 231b. By inserting a bolt into the second oblong hole 231b, the push-pull electromagnet 233 is fixed to the swing arm connecting piece 231. By adjusting the position of the bolt inserted into the second oblong hole 231b, the installation position of the push-pull electromagnet 233 fixed to the swing arm connecting piece 231 can be adjusted, thereby adjusting the initial position of the telescopic clip 234 to adapt to lids or handles of different sizes. In this embodiment, the second oblong hole 231b is located in the middle of the swing arm connecting piece 231.

[0050] Furthermore, the clamp 23 also includes a telescopic clamp limiting piece 235 and a telescopic clamp limiting rod 236. The telescopic clamp limiting piece 236 is disposed on the top of the push-pull electromagnet 233, extending towards the telescopic clamp 234, and has a limiting groove 235a in its middle, extending along a straight line parallel to the telescopic clamp 234's telescopic direction. The telescopic clamp limiting rod 236 is disposed on the top of the telescopic clamp 234, its end inserted into the limiting groove 235a of the telescopic clamp limiting piece 235. The telescopic clamp limiting piece 235 and the telescopic clamp limiting rod 236 restrict the movement direction of the telescopic clamp 234, ensuring that the telescopic clamp 234 can only telescopically move along the straight line defined by the limiting groove 235a, thereby improving the stability of the telescopic clamp 234's movement.

[0051] Furthermore, the swing arm connecting piece 231 is also provided with a fixing clip mounting portion 231c, which is perpendicular to the main body of the swing arm connecting piece 231 used to connect the swing arm 22, forming an "L" shape with the main body of the swing arm connecting piece 231. The fixing clip 232 is also provided with a connecting portion 232a, which is perpendicular to the main body of the fixing clip 232 used to clamp the cover or handle, forming an "L" shape with the main body of the fixing clip 232. The fixing clip mounting portion 231c of the swing arm connecting piece 231 and / or the connecting portion 232a of the fixing clip 232 are provided with a third oblong hole. By inserting a bolt into the third oblong hole, the fixing clip 232 is installed on the swing arm connecting piece 231. By adjusting the position of the bolt inserted into the third oblong hole, the relative position of the swing arm connecting piece 231 and the fixing clip 232 can be adjusted, thereby adjusting the vertical distance between the fixing clip 232 and the telescopic clip 234 to accommodate covers or handles of different thicknesses. In this embodiment, both the fixing clip mounting portion 231c of the swing arm connecting piece 231 and the connecting portion 232a of the fixing clip 232 are provided with two third oblong holes. The positions of the third oblong holes on the fixing clip mounting portion 231a of the swing arm connecting piece 231 and the connecting portion 232a of the fixing clip 232 correspond, so that two bolts can be inserted into the two pairs of third oblong holes respectively. The two bolts are respectively fixed with two nuts, thereby installing the fixing clip 232 on the swing arm connecting piece 231.

[0052] This invention offers the following technical advantages: It replaces the rope in existing testing methods with a swing arm and clamps, effectively avoiding the risk of rope jamming. This improves the stability of the testing process while achieving fully automated control, saving significant labor costs. Regarding the clamp structure design, this invention features a telescopic clamp. By controlling the extension and retraction of this clamp, the testing mode can be switched between a normal falling mode and a force-pressing mode, allowing for separate testing of hinge lifespan data under different operating conditions. This significantly improves the completeness of the testing dimensions and the comprehensiveness of data acquisition. Furthermore, by controlling the extension and retraction of the telescopic clamp with an electromagnet, the failure of the damping hinge can be detected in the force-pressing mode.

[0053] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments and claims of this application are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that, unless otherwise stated, “a plurality” refers to two or more; the terms “first,” “second,” “third,” etc., are used only to distinguish and not to describe a particular order or sequence, nor should they be construed as indicating or implying relative importance. The term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. When the above description relates to drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of this application, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A hinge life testing device, characterized in that, include: Electric motor; The swing arm, the first end of which is fixedly connected to the output shaft of the motor; A clamp, which is located at the second end of the swing arm, is used to hold the cover or handle of the hinge to be tested; The controller controls the rotation of the output shaft of the motor, which in turn controls the swing arm to swing around its first end, causing the clamp to hold the cover or handle and move it up and down, thereby controlling the opening or closing of the cover; it obtains the life data of the hinge under test by counting the number of times the cover was repeatedly opened and closed before the hinge under test was damaged.

2. The hinge life testing device according to claim 1, characterized in that: The clamp includes: A swing arm connecting piece is disposed at the second end of the swing arm; A fixing clip is provided on the swing arm connecting piece; A telescopic clip is mounted on the swing arm connecting piece via a position control unit; The position control unit is signal-connected to the controller; the controller controls the extension or retraction of the telescopic clip through the position control unit; When the telescopic clip is extended and the cover of the hinge to be tested is closed, the fixed clip is located at the bottom of the cover or handle of the hinge to be tested, and the telescopic clip is located at the top of the cover or handle of the hinge to be tested. When the telescopic clip retracts and the cover of the hinge to be tested is closed, the projection of the telescopic clip on the horizontal plane does not contact the projection of the cover or handle on the horizontal plane.

3. The hinge life testing device according to claim 2, characterized in that: The position control unit is specifically a push-pull electromagnet; The push-pull electromagnet is mounted on the swing arm connecting piece; The telescopic clip is disposed at the end of the telescopic movable slide rod of the push-pull electromagnet; The controller controls the extension or retraction of the telescopic clamp by controlling the power supply to the push-pull electromagnet.

4. The hinge life testing device according to claim 3, characterized in that: The swing arm connecting piece is provided with a first waist-shaped hole. By inserting a screw or bolt into the first waist-shaped hole, the swing arm connecting piece is fixed to the second end of the swing arm.

5. The hinge life testing device according to claim 4, characterized in that: The swing arm connecting piece is provided with a fixing clip mounting part perpendicular to the main body, and the fixing clip is provided with a connecting part perpendicular to the main body; the fixing clip mounting part and / or the connecting part are provided with a third oblong hole, and the fixing clip is fixed on the swing arm connecting piece by inserting a bolt into the third oblong hole.

6. The hinge life testing device according to claim 5, characterized in that: The clamp also includes: A telescopic clamp limiting piece is disposed on the top of the push-pull electromagnet and extends toward the telescopic clamp, wherein a limiting groove is provided in the middle of the piece extending in a straight line parallel to the telescopic clamp's telescopic direction. A telescopic clip limiting rod is disposed on the top of the telescopic clip, and its end is inserted into the limiting groove of the telescopic clip limiting piece.

7. The hinge life testing device according to any one of claims 1-6, characterized in that: It also includes a reset sensor connected to the controller signal; when the cover of the hinge under test is closed to the position, the cover triggers the reset sensor, causing the controller to receive a reset signal; The controller counts the number of times a reset signal is received, and uses this as the number of times the lid is repeatedly opened and closed. The controller records the waiting time for each reset signal. When the waiting time exceeds a preset waiting time threshold or is less than a preset minimum falling time, it is determined that the hinge is damaged, and then the current test is stopped. The number of times the lid is repeatedly opened and closed in this test is used as the hinge's lifespan data.

8. The hinge life testing device according to any one of claims 1-6, characterized in that: It also includes a lower limit switch and an upper limit switch that are connected to the controller signal; When the swing arm swings to the lowest point of the preset stroke, the swing arm triggers the lower limit switch, so that the controller receives the lower limit signal; When the swing arm swings to the highest point of the preset stroke, the swing arm triggers the upper limit switch, so that the controller receives the upper limit signal; after receiving the upper limit signal, the controller prohibits the swing arm from swinging upward.

9. A hinge life testing device, characterized in that, include: The cabinet, the hinge life testing device according to any one of claims 1-8, and the human-computer interaction device; The hinge life testing device is installed inside the cabinet and tests the life of the hinge to be tested in order to obtain the life data of the hinge to be tested. The human-computer interaction device is signal-connected to the hinge life testing device, which displays the life data of the hinge to be tested and controls the operating parameters of the hinge life testing device.

10. The hinge life testing device according to claim 9, characterized in that: The number of cabinet and hinge life testing devices is 2; The two cabinets are stacked together; The two hinge life testing devices respectively test the life of the two hinges to be tested.

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