A device for testing the flexibility and lifespan of a gear shift lever

Abstract

This invention relates to the field of shift lever flexibility and life testing technology, specifically to a shift lever flexibility and life testing device, including a testing robot, a base, a shift lever, and a testing platform. The base is placed on the testing platform, and the shift lever is hinged to the base. The testing robot is fixedly installed on the top of the shift lever. A locking device is bolted to the testing platform, comprising a lower mold mounted on the testing platform by screws, an upper mold cooperating with guide posts above the lower mold, motors mounted on both sides of the top wall of the upper mold by screws, a gear one fixedly installed at the motor output end, a housing threaded to both sides of the upper mold, a worm gear rotatably mounted on the upper part of the housing, a gear two fixedly mounted on the side of the worm gear near the upper mold, and a rotating shaft rotatably mounted on the lower part of the housing. This invention uses a worm gear mechanism to fix the upper and lower molds, preventing loosening, and utilizes the mold-closing mechanism to increase the force-bearing area on the shift lever base, enhancing the fixing effect.

Description

Technical Field

[0001] This invention relates to the field of gear shift lever flexibility and life testing technology, specifically to a gear shift lever flexibility and life testing device. Background Technology

[0002] The flexibility of the gear shift lever significantly impacts a vehicle's driving performance and safety. During driving, the gear shift lever serves several purposes: ① Changing gears, i.e., altering the transmission's reduction ratio, ensuring the vehicle receives appropriate speed and torque under various driving conditions (starting, climbing, descending, turning, etc.), allowing the engine to operate under suitable conditions; ② Achieving reverse gear when the engine output direction is fixed, enabling the vehicle to move backward; ③ Interrupting torque transmission between the transmission and engine, i.e., the transmission idles, or neutral. Gear changes have a major impact on a vehicle's efficient operation, and the gear shift lever's flexibility directly affects gear changes; therefore, the flexibility and reliability of the gear shift lever are crucial.

[0003] Statistics show that 50% to 90% of mechanical component failures are caused by fatigue. The complex and varied operating conditions of automobiles necessitate frequent gear shifts; data indicates that a car may shift gears hundreds of thousands of times over its lifespan. Therefore, fatigue life testing is essential. The test results provide reliable fatigue life data for design, reducing production costs and ensuring product quality. This is of great significance to the steady and rapid development of domestically produced automobiles.

[0004] Fixing the gear shift mechanism base is a crucial step in testing the flexibility and lifespan of the gear shift lever. Current testing methods commonly use bolts for fixing. However, due to the lengthy testing process, prolonged shaking of the gear shift lever can easily create concentrated forces at the bolt fixing points, causing the bolts to loosen and affecting the gear shift lever's flexibility and lifespan. Furthermore, this method of fixing the gear shift lever base requires significant time from the testing personnel during installation and removal.

[0005] To address this, a device for testing the flexibility and lifespan of a gear shift lever is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a device for testing the flexibility and lifespan of a gear shift lever. The device uses a worm gear mechanism to fix the upper and lower molds to prevent loosening. It also increases the force-bearing area on the gear shift lever base by using a mold-closing mechanism to enhance the fixing effect, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A device for testing the flexibility and lifespan of a gear shift lever, comprising:

[0009] Inspection robot arm, base, shift lever, inspection table;

[0010] A base is placed on the testing platform, a shift lever is hinged to the base, and a testing robot arm is fixedly installed on the top of the shift lever.

[0011] Also includes:

[0012] A locking device is bolted to the testing platform, and the locking device is used to fix the base.

[0013] Preferably, the locking device includes a lower mold mounted on the testing platform by screws, guide posts fixedly mounted at the four corners of the lower mold, an upper mold cooperating with the guide posts above the lower mold, motors mounted on both sides of the top wall of the upper mold by screws, a gear one fixedly mounted at the output end of the motor, a housing threadedly connected to both sides of the upper mold, a worm gear rotatably mounted on the upper part of the housing, the worm gear rotatably connected between the upper mold and the housing, a gear two cooperating with gear one keyed to the side of the worm gear near the upper mold, a rotating shaft rotatably mounted on the lower part of the housing, a worm wheel cooperating with the worm gear keyed to the rotating shaft, a bracket screwed to both sides of the testing platform near the motor, a rack cooperating with the worm wheel fixedly mounted on the side of the bracket, a pull-out assembly fixedly mounted on the top wall of the lower mold, the pull-out assembly being used to allow the operator to more conveniently remove the base from the lower mold, and a torque limiter provided at the output end of the motor, the torque limiter being used to control the torque applied by the motor to the lower mold.

[0014] Furthermore, gear one and gear two are bevel gears.

[0015] This invention uses a mold-fitting method to fix the base, which increases the stress area of ​​the base and strengthens the fixing structure compared to the existing bolt fixing method. This also effectively prevents the base from shifting due to vibration when testing the flexibility of the shift lever.

[0016] Unlike common molds, the upper mold has a rectangular groove that mates with the shift lever. This groove extends to the side of the upper mold, allowing the base and shift lever to be installed into the lower mold from the side. To minimize the impact on the shift lever's movement, the width of the rectangular groove is greater than the diameter of the ball joint.

[0017] Specifically, the testing platform is equipped with buttons to control the forward and reverse rotation of the motor. When the motor rotates forward, the upper mold moves downward, and when the motor rotates in reverse, the upper mold moves upward. The torque limiter restricts the upward movement distance of the upper mold and the torque applied by the motor to the lower mold.

[0018] When in use, pull out the pull-out assembly from the lower mold, place the base on the pull-out assembly, and then push the pull-out assembly into the lower mold. Since the ball joint at the connection between the shift lever and the base has a certain fixed resistance, it can support the shift lever to remain stationary at a certain position within the range of motion. Therefore, when pushing the base into the lower mold, you only need to adjust the shift lever to a vertical position in advance, and you can smoothly push the pull-out assembly and the base into the lower mold. When the motor starts rotating forward, due to the requirement for fixing the base, the motor torque needs to be converted into pressure from the upper mold to the lower mold. First, a bevel gear transmits the torque to the worm and worm wheel. Then, the worm wheel, in conjunction with a rack and pinion, ensures that the motor's torque output is used to exert pressure on the lower mold. One end of the worm is connected to the side wall of the upper mold, and the other end is connected to the upper part of the outer shell. The worm wheel, which it engages with, is connected to the lower part of the outer shell. When the motor rotates forward, the upper mold, along with the motor and the outer shell, moves downward until the upper and lower molds engage. Due to the torque limiter, the maximum torque output by the motor is fixed after mold closing, thus ensuring a fixed pressure from the upper mold to the lower mold. This ensures the base is fixed while preventing damage to the motor. Utilizing the self-locking property of the worm gear, even after mold closing and the motor stops outputting torque, the closing force between the upper and lower molds remains constant.

[0019] The purpose of using bevel gears is to make the output torque more stable.

[0020] After the shift lever flexibility test is completed, the start motor reverses, the upper mold moves upward, and the base can be removed from the side of the lower mold. Similarly, the self-locking property of the worm gear keeps the upper mold fixed in the set position.

[0021] Due to errors in the machining precision of the upper mold, some structures of the upper mold do not fully contact the base when the mold is closed. A relatively hard rubber can be placed inside the cavity of the upper mold. This type of rubber has low elasticity and can replace part of the structure of the upper mold cavity, using the elasticity of the rubber to compensate for the machining error of the upper mold.

[0022] It should be noted that, during the test of the shift lever's flexibility, the swing amplitude of the shift lever is not 180°, and the ball joint connecting the shift lever to the base protrudes from the base. In conjunction with the rectangular groove opened at the upper mold, the upper mold plate will not affect the swing of the shift lever when the mold is closed.

[0023] Similarly, since the swing range of the shift lever is not 180°, the motors fixedly installed on both sides of the top wall of the upper mold will not affect the swing of the shift lever.

[0024] Preferably, the mold cavity of the upper mold is not completely fitted to the base.

[0025] The mold mentioned in this invention does not need to be the same as a traditional mold because this solution only requires the upper and lower molds to fit together to fix the base. The shape of the upper mold does not need to completely match the shape of the base. During mold closing, only a large portion of the area between the upper mold and the base needs to be in contact to achieve a good fixing effect. Therefore, depending on the complex shape of the base, such as a curved surface, the upper mold can partially or completely reflect this shape, i.e., retain a cavity, to reduce processing costs. Admittedly, if the upper mold can completely fit the shape of the base, the base can achieve a better fixing effect during mold closing. The manufacturer can decide on the fixing effect.

[0026] Compared to large cars, when testing the gear shift lever flexibility of small cars, since small cars require less force to shift gears, the force applied to the gear shift lever is reduced in order to simulate the real operating environment. In this case, the required fixing effect of the base can be reduced, that is, the upper mold and the base are not completely fitted.

[0027] Therefore, when testing the flexibility of a small car's gear shift lever, complex structures such as curved surfaces and irregular edges can be avoided when manufacturing the upper mold. One way to avoid complex structures in the upper mold is to leave them unused, meaning the upper mold does not apply clamping force to the complex structures of the base. This allows the upper mold to make multi-area contact with the horizontal area of ​​the base when in contact, reducing the processing difficulty and cost of the upper mold.

[0028] Preferably, the pull-out assembly includes a slider slidably mounted on the lower mold, a limit block fixedly mounted on the side away from the shift lever, a handle fixedly mounted on the side of the slider near the shift lever, a guide assembly fixedly mounted on the slider, the guide assembly being used to ensure the pull-out direction of the slider and that the upper mold can fully cooperate with the base when the mold is closed, and a positioning assembly being provided on the top wall of the slider, the positioning assembly being used to fix the base.

[0029] Furthermore, the slider is magnetically connected to the limiting block.

[0030] Because of the various detection devices on the shift lever, the height of the upper mold is limited. In the small space between the upper and lower molds, the operator needs to embed the base into the positioning component. During this process, the operator needs to perform physical actions such as bending over. The presence of the shift lever means that the operator can only place the base on the lower mold from one direction.

[0031] To facilitate the installation of the base on the lower mold, the original mounting position of the base on the lower mold is changed to a pull-out type. When testing is required, the slider is pulled out from the lower mold, the base is installed on its surface, and positioned by the positioning component. After installation, the slider is directly pushed into the lower mold until it abuts against the limit block. The contact surface between the slider and the limit block has multiple magnets that attract each other. When the slider approaches the limit block, the magnets fix the slider to the side of the limit block. Combined with the positioning component, this ensures the base is fixed before the mold closes. Then, the motor is started, and after the upper and lower molds close, the testing process can begin.

[0032] After inspection, the slider is pulled out of the lower mold, and the base is removed directly. This saves the operator time in both installation and disassembly.

[0033] Furthermore, the pull-out mounting base design ensures that the operator's fingers remain a certain distance from the mold when installing or removing the base, thus increasing the ease of installation.

[0034] Furthermore, the guiding assembly includes a guide block one fixedly installed at the bottom of the slider, a groove in the lower mold that cooperates with the guide block one, a guide block two fixedly installed on the side wall of the slider near the handle, a guide groove in the lower mold that cooperates with the guide block two, a guide post fixedly installed on the side wall of the slider away from the handle, and a guide hole in the limiting block that cooperates with the guide post.

[0035] The left side of the base is arc-shaped and extends downward, so that the slider and the lower mold are not in complete contact. When the slider is pulled out, it is easy to deviate. The guide block and the slide rail cooperate to ensure that the movement direction of the slider does not change.

[0036] Because the operator needs to overcome the magnetic force between the slider and the limiting block when pulling out the slider, the operator may pull the slider excessively, causing it to detach from the lower mold. The guide groove does not penetrate the side of the lower mold, thus restricting the displacement of the guide block and limiting the distance the slider can be pulled out of the lower mold.

[0037] Preferably, the positioning component includes a positioning hole on the top wall of the slider, a fixing rod is slidably installed in the positioning hole, the fixing rod is used to fix the base, and a delay component is provided at the bottom of the fixing rod, the delay component is used to control the lifting and lowering of the fixing rod, so that the base can be removed from the slider more conveniently.

[0038] Preferably, the delay component includes a fixing hole formed in the lower mold, a top block slidably installed in the fixing hole, a spring fixedly installed at the bottom of the top block, mounting blocks fixedly installed on both sides of the side wall of the slider near the handle, a stop block slidably installed in the mounting block, and the mounting block and the stop block are connected by a spring.

[0039] Furthermore, the stop block is provided with a chamfer.

[0040] Furthermore, the top of the top block is conical.

[0041] The fixing rod is initially located within the positioning hole of the slider. When the slider is located within the lower mold and magnetically connected to the limiting block, the fixing hole and the positioning hole are interconnected, and the ejector block pushes the fixing rod out of the slider. The top of the ejector block is tapered, the purpose of which is to compress the spring whether the slider is pulled out or pushed in, so that the ejector block is pressed into the fixing hole by the slider.

[0042] Specifically, the operator places the base on the slider. Because the left side of the base is curved, it provides positioning on the slider. Combined with the stop block inside the mounting block, after the slider is pushed into the lower mold, the top block pushes the fixing rod into the original mounting hole of the base, providing both fixation and calibration. This allows the operator to place the base directly on the slider without aligning it with the fixing rod.

[0043] When the operator pulls the slider out of the lower mold, the top block is pressed into the fixing hole by the slider, and the fixing rod loses its support and falls into the positioning hole, allowing the operator to remove the base from the slider in any direction.

[0044] It should be noted that the elastic force of spring one is less than the weight of the slider. When the slider contacts the top block, spring one is directly compressed instead of the slider warping. Combined with the action of guide block two and guide groove, the slider can only slide within a fixed plane.

[0045] Preferably, the torque limiter includes an inner ring fixedly installed at the motor output end, the inner ring having multiple limiting grooves, a second spring fixedly installed in the limiting groove, a ball fixedly installed at the end of the second spring, an outer ring movably installed outside the inner ring to cooperate with the ball, and a limit plate fixedly installed on the upper part of the bracket.

[0046] Half of the ball bearing is located in the inner ring, and the other half in the outer ring. The ball bearing is connected to the inner ring by a second spring, while the outer ring is fixedly connected to a first gear. When the motor rotates forward, the upper die moves downward, using the elastic force of the second spring to hold the ball bearing between the inner and outer rings, thus enabling the first gear to rotate. When the upper and lower dies come into contact, the ball bearing is engaged in the limiting groove of the inner ring, and the motor runs freely. The user can control the output torque of the motor by adjusting the elastic force of the second spring.

[0047] After the shift lever test is completed, the motor is started to reverse, the upper mold moves upward, and the outer shell contacts the limit plate. The upper mold cannot move, and the ball is pressed into the inner ring's limiting groove again, and the motor runs idle.

[0048] Therefore, by simply setting the time for forward or reverse rotation, and in conjunction with a torque limiter, the upward or downward displacement of the upper mold can be controlled.

[0049] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0050] 1. Equipped with a locking device, the base is fixed by a mold-closing method. The mold-closing force is provided by a worm gear driven by a motor. When the motor rotates forward, the upper mold moves downward to complete the mold closing. When the motor rotates in reverse, the upper mold moves upward. The operator removes the base and relies on a torque limiter to limit the upward movement distance of the upper mold and the torque applied by the motor to the lower mold. Compared with the existing bolt fixing method, this increases the force-bearing area of ​​the base, strengthens the fixing structure, and reduces the vibration of the shift lever to the base when testing the flexibility of the shift lever. Furthermore, due to the self-locking property of the worm gear, even if it becomes loose, it can still maintain a tightness, ensuring the stability of the locking force.

[0051] 2. A torque limiter is installed at the output end of the motor. The elastic force of spring two is used to lock the ball between the inner ring and the outer ring, so as to realize the rotation of gear one. When the upper mold and the lower mold come into contact, the ball is locked into the limiting groove of the inner ring, so that the motor runs idling. The operator can adjust the pressure of the base by changing the torque limiter.

[0052] 3. To facilitate the installation of the base on the lower mold, the original position for the base on the lower mold is changed to a pull-out design. When testing is required, the slider is pulled out from the lower mold, the base is installed on its surface, and positioned by the positioning components. After installation, the slider is directly pushed into the lower mold until it abuts against the limit block. The contact surface between the slider and the limit block is equipped with multiple magnets that attract each other. When the slider approaches the limit block, the magnets fix the slider to the side of the limit block, saving time for the operator during both installation and disassembly. Attached Figure Description

[0053] Figure 1 This is a diagram of the overall structure of the base;

[0054] Figure 2 This is a structural diagram of the present invention;

[0055] Figure 3 for Figure 2 Enlarged view of the local structure at point B;

[0056] Figure 4 This is a side view of the overall structure of the present invention;

[0057] Figure 5 This is a structural diagram of the lower mold;

[0058] Figure 6 This is a top view of the lower mold;

[0059] Figure 7 for Figure 6 AA section view;

[0060] Figure 8 This is a cross-sectional view of the torque limiter.

[0061] In the diagram: 1. Inspection robot; 2. Shift lever; 3. Upper mold; 4. Motor; 5. Lower mold; 6. Inspection table; 7. Base; 8. Guide post; 9. Limit block; 401. Gear 1; 402. Bracket; 403. Rack; 404. Worm gear; 405. Rotating shaft; 406. Gear 2; 407. Housing; 408. Worm; 409. Limit plate; 410. Outer ring; 411. Inner ring; 412. Ball bearing; 413. Spring 2; 501. Slider; 502. Handle; 503. Guide block 1; 504. Guide block 2; 505. Guide groove; 506. Guide post; 507. Mounting block; 508. Stop block; 509. Positioning hole; 510. Fixing rod; 511. Top block; 512. Spring 1. Detailed Implementation

[0062] Please see Figures 1 to 8 This invention provides a device for testing the flexibility and lifespan of a gear shift lever, the technical solution of which is as follows:

[0063] A device for testing the flexibility and lifespan of a gear shift lever, comprising:

[0064] Inspection robot 1, base 7, shift lever 2, inspection table 6;

[0065] A base 7 is placed on the testing table 6, a shift lever 2 is hinged to the base 7, and a testing robot arm 1 is fixedly installed on the top of the shift lever 2.

[0066] The lower mold 5 is fixed to the inspection table 6 with screws. Four guide posts 8 are interference-fitted at the four corners of the lower mold 5. An upper mold 3 is located above the lower mold 5. Guide sleeves are installed at the four corners of the upper mold 3. The upper mold 3 and the lower mold 5 are guided by the guide posts 8 and the guide sleeves. The motor 4 is bolted to both sides of the top wall of the upper mold 3. The inner ring 411 of the torque limiter is keyed to the output end of the motor 4, and the outer ring 410 is interference-fitted to gear 1 401. The outer shell 407 is fixed to the two side walls of the upper mold 3 with screws. One end of the worm gear 408 is installed inside the upper mold 3, and the other end is installed on the upper end of the outer shell 407. Gear 2 406 is keyed to the worm gear 408 near the lower mold 5. One end of the shaft 405 meshes with gear 401. The shaft 405 is rotatably mounted on the lower part of the housing 407. The worm gear 404 is connected to the shaft 405 by a key and meshes with the worm 408. The bracket 402 is mounted on the two sides of the inspection table 6 near the lower mold 5 by screws. The rack 403 is fixedly mounted on the side of the bracket 402 near the lower mold 5. The slider 501 is installed in the lower mold 5. Through the cooperation of the guide block 503 and the slide groove, it can be pulled out and pushed in. The limit block 9 is mounted on the lower mold 5 by screws. It plays a limiting role when the slider 501 is pushed into the lower mold 5. The limit block 9 is equipped with a magnet. It plays a fixing role when the slider 501 approaches the limit block 9.

[0067] Example 1

[0068] The testing platform 6 is equipped with buttons to control the forward and reverse rotation of motor 4, and the time for the forward and reverse rotation of motor 4 can be set.

[0069] Before testing, the operator holds the handle 502 and applies force outward to overcome the magnetic force of the slider 501 and the magnet inside the limit block 9, so that the slider 501 and the guide block 503 at its bottom are pulled out along the slide groove, and the top block 511 is pressed into the fixing hole of the lower mold 5 by the slider 501.

[0070] In use, the base 7 is placed on the slider 501. The left part of the base 7 is curved, which makes the base 7 have a positioning function on the slider 501. Since the ball joint at the connection between the shift lever 2 and the base 7 has a certain fixed resistance, it can support the shift lever 2 to remain stationary at a certain position within the range of motion. Therefore, when pushing the base 7 into the lower mold 5, it is only necessary to adjust the shift lever 2 to the vertical position in advance, so that the pull-out assembly and the base 7 can be smoothly pushed into the lower mold 5. The slider 501 moves along the groove at its bottom towards the limiting block 9. During the movement, the guide post 506 on the side of the slider 501 is embedded in the guide hole in the limiting block 9, ensuring that the slider 501 can only move in one direction. When the slider 501 is pushed to the limiting block 9, the magnet in the slider 501 cooperates with the magnet in the limiting block 9 to fix the slider 501 in the lower mold 5. At this time, the fixing hole in the lower mold 5 and the positioning hole 509 in the slider 501 are connected to each other. The top block 511 pushes the fixing rod 510 out of the slider 501 and embeds the fixing rod 510 into the original hole of the base 7, restricting the movement of the base 7 and also serving a calibration function. The top of the top block 511 is conical, so that the spring 512 can be compressed whether the slider 501 is pulled out or pushed in, so that the top block 511 is pressed into the fixing hole by the slider 501.

[0071] After the base 7 is installed, the motor 4 is started to rotate forward, the upper mold 3 moves downward, half of the ball 412 is located in the inner ring 411, and the other half is located in the outer ring 410. The ball 412 is connected to the inner ring 411 by the second spring 413. The outer ring 410 is fixedly connected to the first gear 401. When the motor 4 rotates forward, the upper mold 3 moves downward, and the elastic force of the second spring 413 is used to lock the ball 412 between the inner ring 411 and the outer ring 410, so as to realize the rotation of the first gear 401. When the upper mold 3 contacts the lower mold 5, the ball 412 is locked into the limiting groove of the inner ring 411, and the motor 4 runs idle.

[0072] After the shift lever 2 has completed its inspection, the robot arm 1 and the shift lever 2 are released from their fixed positions. The motor 4 is then started to reverse, causing the upper mold 3 to move upwards, bringing the outer shell 407 into contact with the limiting plate 409. The upper mold 3 can no longer move, and the ball bearing 412 is pressed back into the limiting groove of the inner ring 411. The motor 4 then idles. The slider 501 is then pulled out of the lower mold 5, and the upper base 7 of the slider 501 and the shift lever 2 are removed.

[0073] After all the shift levers 2 have been tested, start the motor 4 to reverse and bring the upper mold 3 and the lower mold 5 together to reduce the load on the worm gear 404.

[0074] Compared to the existing bolt-fixed base 7, under the same locking force, the upper mold 3 and base 7 are in complete contact during mold closing, increasing the force-bearing area and strengthening the fixing structure. This significantly reduces the vibration of the base 7 during the flexibility test of the shift lever 2. Furthermore, due to the self-locking property of the worm gear 404 and worm 408, the base 7 is less prone to loosening during vibration. In contrast, with bolt-connected base 7, the nut is prone to rotation and bolt loosening under prolonged vibration. Once the bolt loosens, its subsequent fixing effect on the base 7 diminishes, leading to increasingly larger vibration deviations. However, with the worm gear 404 and worm 408 fixing method, even if loosening occurs, the force for each subsequent loosening of the worm gear 404 and worm 408 remains constant, ensuring the stability of the locking of the upper and lower molds 5.

[0075] Example 2

[0076] Unlike Embodiment 1, the upper mold 3 and the base 7 described above are in a state of complete fit. However, compared with the base 7 which is not completely fitted, the improvement in its fixing effect is not much. In fact, if the upper mold 3 only contacts the two sides and the tail of the base 7 when the mold is closed, it can also meet the fixing requirements of most shift levers 2 during testing.

[0077] Compared to large cars, when testing the flexibility of the gear shift lever 2 of a small car, since small cars require less force to shift gears, the force applied to the gear shift lever 2 is reduced in order to simulate the real operating environment. At this time, the fixing effect required for the base 7 can be reduced, that is, the upper mold 3 and the base 7 are not completely fitted.

[0078] Therefore, when testing the flexibility of the gear shift lever 2 of a small car, complex structures such as curved surfaces and irregular edges can be avoided when manufacturing the upper mold 3. The upper mold 3 can avoid complex structures by leaving them unused, meaning that the upper mold 3 does not apply any clamping force to the complex structures of the base 7. This allows the upper mold 3 to make multi-area contact with the horizontal area of ​​the base 7 when in contact with it, reducing the processing difficulty and cost of the upper mold 3.

Claims

1. A device for testing the flexibility and lifespan of a gear shift lever, comprising: Inspection robot (1), base (7), shift lever (2), inspection table (6); A base (7) is fixedly installed on the testing platform (6), a shift lever (2) is movably installed on the base (7), and a testing robot (1) is fixedly installed on the top of the shift lever (2); Its characteristic is that it further includes: A locking device is fixedly installed on the testing table (6). The locking device is used to fix the base (7) on the testing table (6) to prevent it from shifting due to vibration. The locking device includes a lower mold (5) fixedly installed on the testing table (6), guide posts (8) fixedly installed at the four corners of the lower mold (5), an upper mold (3) that cooperates with the guide posts (8) is provided above the lower mold (5), a motor (4) is fixedly installed on both sides of the top wall of the upper mold (3), a gear (401) is fixedly installed at the output end of the motor (4), a housing (407) is fixedly installed on both side walls of the upper mold (3), a worm gear (408) is rotatably installed on the upper part of the housing (407), the worm gear (408) is rotatably connected between the upper mold (3) and the housing (407), and a gear that cooperates with the gear (401) is fixedly installed on the side of the worm gear (408) near the upper mold (3). The gears (406) are mutually engaged. A shaft (405) is rotatably mounted on the lower part of the outer shell (407). A worm wheel (404) that cooperates with the worm (408) is fixedly mounted on the shaft (405). A bracket (402) is fixedly mounted on both sides of the testing table (6) near the motor (4). A rack (403) that cooperates with the worm wheel (404) is fixedly mounted on the side of the bracket (402). A pull-out assembly is fixedly mounted on the top wall of the lower mold (5). The pull-out assembly is used to allow the operator to easily remove the base (7) from the lower mold (5). A torque limiter is provided at the output end of the motor (4). The torque limiter is used to control the torque applied by the motor (4) to the lower mold (5). The pull-out assembly includes a slider (501) slidably mounted on the lower mold (5), a limit block (9) fixedly mounted on the side away from the shift lever (2), a handle (502) fixedly mounted on the side of the slider (501) near the shift lever (2), a guide assembly fixedly mounted on the slider (501), the guide assembly is used to ensure the pull-out direction of the slider (501) and that the upper mold (3) can fully cooperate with the base (7) when the mold is closed, and a positioning assembly is provided on the top wall of the slider (501), the positioning assembly is used to prevent the base (7) from shifting when the base (7) is pushed into the lower mold (5); The torque limiter includes an inner ring (411) fixedly installed at the output end of the motor (4). The inner ring (411) has multiple limiting grooves. A second spring (413) is fixedly installed in the limiting groove. A ball (412) is fixedly installed at the end of the second spring (413). An outer ring (410) that cooperates with the ball (412) is movably installed outside the inner ring (411). A limit plate (409) is fixedly installed on the upper part of the bracket (402).

2. The device for testing the flexibility and lifespan of a gear shift lever according to claim 1, characterized in that: The guiding assembly includes a guide block 1 (503) fixedly installed at the bottom of the slider (501), a groove in the lower mold (5) that cooperates with the guide block 1 (503), a guide block 2 (504) fixedly installed on the side wall of the slider (501) near the handle (502), a guide groove (505) in the lower mold (5) that cooperates with the guide block 2 (504), a guide post (506) fixedly installed on the side wall of the slider (501) away from the handle (502), and a guide hole in the limiting block (9) that cooperates with the guide post (506).

3. The device for testing the flexibility and lifespan of a gear shift lever according to claim 1, characterized in that: The positioning component includes a positioning hole (509) on the top wall of the slider (501), a fixing rod (510) is slidably installed in the positioning hole (509), and a delay component is provided at the bottom of the fixing rod (510). The delay component is used to control the lifting and lowering of the fixing rod (510) so that the base (7) can be taken out from the slider (501) more conveniently.

4. The device for testing the flexibility and lifespan of a gear shift lever according to claim 3, characterized in that: The delay component includes a fixing hole in the lower mold (5), a top block (511) is slidably installed in the fixing hole, the top of the top block (511) is conical, a spring (512) is fixedly installed at the bottom of the top block (511), and mounting blocks (507) are fixedly installed on the side wall of the slider (501) near the handle (502) on both sides. A stop block (508) is slidably installed in the mounting block (507), and the mounting block (507) and the stop block (508) are connected by a spring.

5. The device for testing the flexibility and lifespan of a gear shift lever according to claim 1, characterized in that: Gear 1 (401) and gear 2 (406) are bevel gears.

6. The device for testing the flexibility and lifespan of a gear shift lever according to claim 1, characterized in that: The slider (501) is magnetically connected to the limiting block (9).

7. A device for testing the flexibility and lifespan of a gear shift lever according to any one of claims 1-6, characterized in that: The cavity of the upper mold (3) and the base (7) are not completely fitted together.

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